WO2019080375A1 - Angle adjustment device and splicing screen - Google Patents

Abstract

An angle adjusting device (100) and a splicing screen (10), the angle adjusting device (100) comprises: a first housing (110), a second housing (120), an angle adjusting block (130), and a screw (140) And a cover plate (160); the first housing (110) includes a first curved surface portion (111), the first curved surface portion (111) is provided with a first sliding portion (113); and the second housing (120) includes a second portion The curved surface portion (121), the second curved surface portion (121) is provided with a second sliding portion (123); the angle adjusting block (130) is provided with a screwing portion (131), and the screwing portion (131) is provided with a screw hole (132) The one side of the angle adjusting block (130) facing the first curved surface portion (111) and the one surface facing the second curved surface portion (121) are respectively provided with adjusting slide rails (133), and the adjusting sliding rails (133) are respectively associated with the first sliding The portion (113) and the second sliding portion (123) are slidably abutted, and the adjusting sliding rail (133) is inclined to the axial direction of the screw hole (132); the cover plate (160) is provided with a through hole (161), and the screw (140) Pass through the through hole (161). When the screw (140) rotates, the angle adjusting block (130) moves under the driving of the screw (140), and the angle adjusting block (130) generates a relative displacement, and the first housing is driven by the adjusting rails (133) on the two faces. The relative rotation of the first housing (110) and the second housing (120) achieves an angle adjustment between the first housing (110) and the second housing (120) for ease of operation.

Description

Angle adjustment device and splicing screen

Cross-reference to related applications

The present application claims priority to Chinese Patent Application, filed on Jan. 23,,,,,,,,,,,,,,,,,,,,,,,,

Technical field

The invention relates to the field of angle adjustment technology, in particular to an angle adjustment device and a splicing screen.

Background technique

With the continuous development of LED (Light Emitting Diode) technology, LEDs are widely used in the field of display and illumination.

The LED screen has the characteristics of high brightness and low energy consumption. In the application of the LED screen, a plurality of LED screens are usually spliced together in a manner of merging, and the angle between the LED screens can be adjusted to suit different display requirements.

Conventional LED arc screens mostly use curved guide rails to achieve arc stitching. The matching clearance of the arc guide rails will cause errors. The error of this error in the tangential direction of the arc of the arc guide rail will be magnified several tens of times, resulting in LED The stitching accuracy of the screen is not high. In addition, the direction of the force of the curved guide rail is the same as the direction of adjustment, so the curved guide rail must be locked by the lock to fix the adjusted angle. This structure is complicated and inconvenient to operate. In order to improve the splicing precision, the traditional LED splicing screen adopts the angle pad for splicing. Although the angle pad can provide relatively high-precision splicing, the angle block has only one angle. To adjust different radians, different angles must be replaced. The spacers result in the need to provide more angular spacers, which increases the cost and makes the use inconvenient.

Summary of the invention

Based on this, it is necessary to provide an angle adjusting device and a splicing screen for the problem that the angle adjustment precision of the conventional LED arc screen is low, the error is large, and the structure is complicated.

An angle adjusting device includes: a first housing, a second housing, an angle adjusting block, a screw and at least one cover;

One end of the first housing is rotatably connected to the cover plate, the first housing includes a first curved surface portion and a first connecting portion connected to each other, and the first curved surface portion is provided with a first sliding portion;

The second housing includes a second curved surface portion and a second connecting portion connected to each other, and the second curved surface portion is provided with a second sliding portion; the first connecting portion and the second connecting portion are respectively used for connecting the first sliding portion a box body and a second box body;

The angle adjusting block has a curved structure, the angle adjusting block is provided with a screwing portion, the screwing portion is provided with a screw hole, and the axial direction of the screw hole is parallel to the first curved surface portion and the second portion a curved surface portion, the angle adjusting block is disposed between the first curved surface portion and the second curved surface portion, the angle adjusting block faces one side of the first curved surface portion and faces the second curved surface portion One side of the adjusting slide rail is disposed on each side, and the adjusting slide rails on the two surfaces are respectively slidably abutted with the first sliding portion and the second sliding portion, and the adjusting rail on at least one side is inclined to The axial direction of the screw hole, and the adjusting slide rail is linear or curved;

When the adjustment rail is linear, and the first box and the second box are disposed at 180 degrees, the adjustment rails on the two sides are not parallel and are not perpendicular to the first box And a second case;

When the adjusting slide rail is curved, the adjusting slide rails on the two faces are along the surface of the angle adjusting block, from one end close to the first connecting portion to an end close to the second connecting portion Gradually bend

The cover plate is provided with a through hole, and the through hole is aligned with the screw hole;

The screw is rotatably disposed in the through hole, and the screw is fixedly connected to the cover.

A splicing screen comprising at least two boxes, further comprising an angle adjusting device according to any of the above embodiments, wherein the first connecting portion of the first housing is connected to a box, the second The second connection portion of the housing is coupled to the other of the housings.

The angle adjusting device and the splicing screen, when the screw rotates in the screw hole, the angle adjusting block moves along the axial direction of the screw under the driving of the screw, and the angle adjusting block respectively generates relative displacement with the first housing and the second housing, And the relative rotation of the first housing and the second housing is driven by the adjusting rails on the two sides, thereby achieving an angle adjustment between the first housing and the second housing, thereby connecting to the first housing The two housings on the body and the second housing are angularly adjusted, and since the angle between the first housing and the second housing is changed according to the rotation angle of the screw, the first housing and the second housing are caused The angle between the bodies is finely adjusted, so that the adjustment precision is higher, and the angle adjusting device has a simple structure and is easy to operate. In addition, since the angle adjusting block converts the angle adjustment from the linear motion to the relative rotation between the first housing and the second housing by adjusting the slide rail, the adjusting rail and the first housing and the second housing are adjusted. The gap between them does not affect the rotation, and is not amplified in the splicing of the LED screen, which greatly improves the splicing precision of the display screen.

DRAWINGS

1 is a perspective view showing a perspective structure of an angle adjusting device according to an embodiment;

2 is a perspective exploded structural view of an angle adjusting device according to an embodiment;

3 is a schematic cross-sectional structural view of an angle adjusting device according to an embodiment;

4 is a schematic perspective view of a perspective adjustment device of another embodiment;

FIG. 5 is a perspective exploded structural view of an angle adjusting device according to another embodiment; FIG.

6 is a schematic cross-sectional structural view of an angle adjusting device according to another embodiment;

Figure 7 is a perspective view showing a perspective structure of an angle adjusting device according to still another embodiment;

Figure 8 is a cross-sectional structural view of an angle adjusting device according to still another embodiment;

9 is a schematic perspective structural view of a splicing screen according to an embodiment;

Figure 10 is a perspective view showing the unlocked state of the locking mechanism of an embodiment;

Figure 11 is a perspective view showing the locking structure of the locking mechanism of an embodiment;

Figure 12 is a schematic view showing the structure of a locking mechanism of an embodiment;

Figure 13 is a schematic view showing the structure of another embodiment of the locking mechanism;

Figure 14 is a partial cross-sectional structural view showing still another direction of the locking mechanism of an embodiment.

Detailed ways

In order to facilitate the understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the text may be embodied in many different forms and is not limited to the embodiments described herein. Rather, the objective of providing these embodiments is to make the understanding of the disclosure of the invention more comprehensive.

As shown in FIG. 1 and FIG. 2, it is an angle adjusting device 100 of an embodiment, comprising: a first housing 110, a second housing 120, an angle adjusting block 130, a screw 140 and at least one cover plate 160; One end of the first housing 110 is rotatably connected to the cover plate 160. The first housing 110 includes a first curved surface portion 111 and a first connecting portion 112 connected to each other, and the first curved surface portion 111 is provided with a first portion. a sliding portion 113; the second housing 120 includes a second curved surface portion 121 and a second connecting portion 122 that are connected to each other, and the second curved surface portion 121 is provided with a second sliding portion 123; the angle adjusting block 130 has a curved surface The angle adjusting block 130 is provided with a screwing portion 131, and the screwing portion 131 is provided with a screw hole 132. The axial direction of the screw hole 132 is parallel to the first curved surface portion 111 and the second curved surface. The angle adjusting block 130 is disposed between the first curved surface portion 111 and the second curved surface portion 121, and the angle adjusting block 130 faces one side of the first curved surface portion 111 and faces the side One side of the second curved surface portion 121 is respectively provided with an adjustment slide rail 133, and the adjustment slide on both sides 133 slidably abuts with the first sliding portion 113 and the second sliding portion 123, that is, the adjusting rail of the angle adjusting block facing one side of the first curved surface portion slides with the first sliding portion Abutting, the adjusting rail of the angle adjusting block facing one side of the second curved surface portion is slidably abutted with the second sliding portion; the adjusting sliding rail 133 of the at least one surface is inclined to the screw hole 132 The axial direction, and the adjusting slide rail 133 is linear or curved. When the adjusting slide rail is linear, and the first box body and the second box body are arranged at 180 degrees, the two sides are The adjustment rails 133 are not parallel and are not perpendicular to the first box and the second box; when the adjustment rails 133 are curved, the adjustment rails 133 on the two sides are along the angle The surface of the adjusting block 130 is gradually bent from an end close to the first connecting portion 112 toward an end close to the second connecting portion 122. The cover plate 160 defines a through hole 161, and the through hole 161 is The screw holes 132 are aligned; the screw 140 is rotatably disposed in the through hole 161, and the screw 140 and the cover plate are 160 fixed connection.

Specifically, one end of the first housing 110 is rotatably coupled to the cover plate 160 such that the first housing 110 and the cover plate 160 are relatively rotatable, and the first housing 110 and the cover plate 160 are in the axial direction of the through hole 161. The upper is relatively fixed.

For example, the screw 140 is rotatably disposed in the through hole 161. In the embodiment, the screw 140 is fixed in the axial direction. For example, the circumferential surface of the screw 140 is provided with a retaining groove in the circumferential direction. The two surfaces abut against the two side walls of the fastening groove, and the bottom of the fastening groove abuts the side wall of the through hole 161, so that the movement of the screw 140 in the axial direction is restricted by the cover plate 160. The screw 140 is prevented from moving in the axial direction, and the screw 140 is rotatable in the through hole 161 such that the screw 140 is rotatably disposed on the cover plate 160.

Specifically, the adjusting slide rail 133 may be linear or curved, that is, when the adjusting slide rail is linear, the adjusting slide rail 133 is extended along a straight line, and the adjustment on each side is performed. The slide rails 133 are inclined or perpendicular to the first connecting portion 112. For example, the adjusting rails 133 on each side are inclined or perpendicular to the second connecting portion 122, it should be understood that the tilting or vertical first in this embodiment The connecting portion 112, that is to say the adjusting rail 133 is not parallel to the first connecting portion 112, in particular, it is worth that the adjusting rail 133 is not parallel to the connecting surface of the first connecting portion 112, and the first connecting portion 112 is provided for The connecting surface of the connecting box is abutted against the box, and each of the surface regulating rails 133 on the angle adjusting block 130 is inclined or perpendicular to the connecting surface of the first connecting portion 112. It should be noted that the first connecting portion 112 is flat, and the adjusting rail 133 on each surface is inclined or perpendicular to the plane of the first connecting portion 112.

When the adjustment rail 133 is curved, the adjustment rail 133 is curved along the surface of the angle adjustment block 130. In the following description, the adjustment of the slide rail 133 will be further described.

In this embodiment, the first curved surface portion 111 and the first connecting portion 112 are integrally formed, that is, the first housing 110 includes an integrally formed first curved surface portion 111 and a first connecting portion 112, and the second curved surface portion 121 and The two connecting portions 122 are integrally formed, that is, the second housing 120 includes an integrally formed second curved surface portion 121 and a second connecting portion 122.

For example, the first connecting portion 112 and the second connecting portion 122 are oppositely disposed, for example, the first connecting portion 112 and the second connecting portion 122 are spaced apart, for example, the first curved surface portion 111, the angle adjusting block 130, and the second curved surface portion 121 The stacking arrangement is sequentially performed, and the curvatures of the first curved surface portion 111, the angle adjusting block 130, and the second curved surface portion 121 are matched with each other, for example, the first curved surface portion 111, the angle adjusting block 130, and the second curved surface portion 121 along the screw 140 It is understood that the first curved surface portion 111 and the second curved surface portion 121 have the same bending width, and the first curved surface portion 111 and the second curved surface portion 121 have a cross section. As a part of the cylinder, the axial direction of the screw hole 132 is parallel to the axial direction of the cylinder, and therefore, the first curved surface portion 111 and the second curved surface portion 121 are parallel to the axial direction of the screw hole 132.

It should be understood that the adjustment rail 133 on at least one surface of the angle adjustment block 130 is inclined to the axial direction of the screw hole, and the adjustment rail 133 on one surface may be inclined to the axial direction of the screw hole 132, and the other surface may be The adjusting rail 133 is parallel to the axial direction of the screw hole 132. Alternatively, the adjusting rails 133 on the two surfaces are inclined to the axial direction of the screw hole 132, respectively, and the adjusting rails 133 on the two surfaces are inclined to The axial angles of the screw holes 132 are different. For example, the adjustment rail 133 is disposed from one end of the angle adjustment block 130 to the other end in a direction inclined to the axial direction of the screw hole 132, and the adjustment rail 133 is bent from one end of the angle adjustment block 130 to the other end, that is, the adjustment slide The rail 133 is curved along the curved surface of the angle adjustment block 130. For example, the adjustment rail 133 has the same curvature as the angle adjustment block 130, so that the angle adjustment block can be rotated relative to the first curved surface portion and the second curved surface portion. .

It is worth mentioning that the adjusting slide rail 133 is inclined to the axial direction of the screw hole 132, so that the adjusting slide rail 133 moves along the axial direction of the screw hole 132 as the adjusting rail 133 rotates, and adjusts the sliding. The rail 133 is generated to the second housing 120 such that the second housing 120 slides along the adjustment rail 133, thereby generating rotation relative to the first housing 110.

The angles of the adjusting slides on the two faces inclined to the axial direction of the screw holes may be one axial direction of the adjusting slide rails and the axial direction of the other parallel screw holes, for example, one face. The upper adjusting rail 133 is inclined to the axial direction of the screw hole 132, and the adjusting rail 133 of the other surface is parallel to the axial direction of the screw hole 132, so that the axial direction is parallel to the screw hole 132. The slide rail 133 rotates around the screw hole 132, and the other adjustment rail 133 inclined in the axial direction of the screw hole 132 moves along the axial direction of the screw hole 132 to generate a rotational thrust to the second housing 120, so that The second housing 120 produces a rotation relative to the first housing 110.

In order to cause a larger rotation between the first housing 110 and the second housing 120, for example, the first sliding portion 113 is inclined to the axial direction of the screw hole 132, the second sliding portion 123 is inclined to the screw. The axial direction of the hole 132, and the angle at which the first sliding portion 113 is inclined to the axial direction of the screw hole 132 is different from the angle at which the second sliding portion 123 is inclined to the axial direction of the screw hole 132, the first sliding portion 113 The same bending width as the first curved surface portion 111 is provided, and the second sliding portion 123 has the same bending width as the second curved surface portion 121.

In one embodiment, the angles of the adjustment rails 133 on the two faces inclined to the axial direction of the screw holes 132 are different, and the adjustment rails 133 on the two faces are respectively inclined toward the screw holes. The axial sides of 132. Specifically, with the axial direction of the screw hole 132 as a central axis, the adjusting slide rails 133 on the two surfaces are respectively inclined toward the axial sides of the screw hole 132, so that the angle adjusting block 130 is along the axis of the screw hole 132. When moving, the angle adjustment block 130 applies a thrust in the first direction by the inclined first sliding portion 113 such that the first housing 110 rotates toward the first direction, and the adjustment on the other side of the angle adjustment block 130 The slide rail 133 is inclined toward the second direction, and therefore, the adjustment rail 133 on the other surface applies a thrust to the second housing 120 in the second direction, and the second housing 120 rotates toward the second direction due to the first direction and The second direction is the two sides facing the axial direction of the screw hole 132, respectively, so that the first housing 110 and the second housing 120 are respectively rotated toward the axial direction of the screw hole 132, so that the first housing 110 Rotating in the opposite direction with the second housing 120 respectively enables a greater rotation between the first housing 110 and the second housing 120, making the angle adjustment more flexible.

Since the adjustment rail 133 on one side of the angle adjustment block 130 abuts against the first sliding portion 113, the adjustment rail 133 on the other surface abuts against the second sliding portion 123, and therefore, when the angle adjustment block 130 is displaced, The adjusting slide rails 133 on the two faces will respectively urge the first sliding portion 113 and the second sliding portion 123. When the screw 140 rotates on the cover plate 160, the driving angle adjusting block 130 is linear along the axial direction of the screw 140. Movement, the angle adjustment block 130 urges the first sliding portion 113 by the adjustment rail 133 toward the first curved surface portion 111, that is, the angle adjustment block 130 applies a force to the first housing 110 along which the first housing 110 is oriented. The adjusting slide rail 133 of the first curved surface portion 111 slides, the angle adjusting block 130 applies a force to the second housing 120, and the second housing 120 slides along the other surface of the angle adjusting block 130 to adjust the sliding rail 133, so that the second The housing 120 produces a rotation relative to the first housing 110.

Specifically, the first connecting portion 112 of the first housing 110 is for connecting with a box 200, and the second connecting portion 122 of the second housing 120 is for connecting with another box 200, such that the first housing When the first housing 120 and the second housing 120 are rotated relative to each other, the two housings 200 are relatively rotated, thereby achieving the angle adjustment of the housing 200.

In order to make the rotation of the angle adjusting device 100 more stable, in one embodiment, as shown in FIG. 2, the number of the cover plates 160 is two, and the two cover plates 160 are respectively connected to the first shell. The two ends of the body 110 are fixedly connected to the two cover plates 160. It should be understood that the screw 140 is axially fixed to the two cover plates 160, and the screw 140 is rotatably disposed on The two cover plates 160, or the screw 140, are rotatably disposed in the through holes 161 of the two cover plates 160. For example, the cover plate 160 is rotatably coupled to the first housing 110 by a screw 140. For example, the two cover plates 160 are rotatably coupled to both ends of the first housing 110 by screws 162, respectively. That is, each end of the first casing is connected to one of the cover plates, that is, one end of the first casing 110 is connected to one of the cover plates 160, the other end is connected to the other cover plate 160, and the first casing is The body 110 can be rotated relative to the two cover plates 160. The two ends of the second housing 120 respectively abut the two cover plates 160, that is, each end of the second housing abuts against one of the cover plates That is, one end of the second casing abuts against one cover plate, and the other end of the second casing abuts against the other cover plate.

Thus, the movement of both ends of the second housing 120 in the axial direction of the screw 140 is restricted by the two cover plates 160, respectively, and when the screw 140 is rotated, the angle adjustment block 130 on the screw 140 is displaced, and the angle adjustment block 130 is rotated. When the second housing 120 is moved, the second housing 120 is subjected to the tilting force of the adjusting rail 133, and the force of the adjusting rail to the second housing 120 is divided into forces along the axial direction of the screw 140, and along The radial force of the screw 140, and since both ends of the second housing 120 are restricted by the two cover plates 160, the second housing 120 is rotated only in the radial direction of the screw 140, such that the second housing 120 The rotation relative to the first housing 110 will be generated, and the second housing 120 does not generate displacement relative to the first housing 110 in the axial direction of the screw 140, so that the rotation of the angle adjustment device 100 is more stable, and the splicing is performed. The rotation adjustment of the screen is better.

In order to enable the angle adjustment block 130 to move between the two cover plates 160, for example, the length of the angle adjustment block 130 is smaller than the distance between the two cover plates 160, that is, the angle adjustment block 130 is along the axis of the screw hole. The length of the direction of the orientation is less than the distance between the two cover plates 160, such that the angle adjustment block 130 can be moved between the two cover plates 160, thereby making the angle adjustment more flexible.

In order to make the angle adjustment device 100 rotate more smoothly when performing the angle adjustment, in one embodiment, as shown in FIGS. 2 and 3, the number of the adjustment rails 133 on each face of the angle adjustment block 130 is two. The two adjustment rails 133 disposed on the same surface are oppositely disposed and parallel to each other. For example, the two adjustment rails 133 disposed on the same surface are inclined at the same angle in the axial direction of the screw hole 132. For example, the two sliding rails 113 are disposed on the same surface. Between 133, for example, the second sliding portion 123 is disposed between the two adjusting slide rails 133 on the same surface, so that the force and the force applied by the angle adjusting block 130 can be dispersed by the two adjusting slide rails 133. Further, the force for driving the second housing 120 to rotate is more uniform, thereby making the angle adjusting device 100 rotate more smoothly when performing the angle adjustment.

In order to reduce the friction between the angle adjusting block 130 and the first housing 110, the angle adjusting device 100 is rotated more smoothly and smoothly. In one embodiment, as shown in FIGS. 5 and 6, the adjusting rail A ball 170 is disposed between the first sliding portion 113 and the first sliding portion 113. For example, the adjusting sliding rail 133 is slidably abutted against the first sliding portion 113 by the ball 170, for example, the adjusting sliding rail 133 and the first sliding portion. A plurality of balls 170 are disposed between the 113, and the ball 170 is disposed between the adjusting rail 133 and the first sliding portion 113. For example, as shown in FIGS. 4, 5, and 6, the sliding rail 133 and the first sliding are adjusted. The one side of the portion 113 facing each other is provided with a circular arc groove, that is, the one side of the adjusting sliding rail 133 facing the first sliding portion 113 is respectively provided with a circular arc groove 135, and the first sliding portion 113 is respectively provided with a circle facing one side of the adjusting sliding rail 133. The arc groove 114 is disposed between the circular arc groove 135 of the adjustment slide rail 133 and the circular arc groove 114 of the first sliding portion 113, and the ball 170 can be defined by two semicircular circular arc grooves. Between the adjustment rail 133 and the first sliding portion 113, the ball 170 makes the angle The friction between the adjusting block 130 and the first housing 110 is smaller, which facilitates the sliding of the angle adjusting block 130 along the first sliding portion 113, so that the sliding of the angle adjusting block 130 is smoother, thereby causing the angle adjusting device 100 to rotate. More smooth and smooth.

In order to reduce the friction between the angle adjusting block 130 and the second housing 120, the angle adjusting device 100 rotates more smoothly and smoothly. In one embodiment, as shown in FIGS. 5 and 6, the adjusting rail A ball 170 is disposed between the 133 and the second sliding portion 123. For example, the adjusting rail 133 is slidably abutted against the second sliding portion 123 by the ball 170, for example, the adjusting rail 133 and the second sliding portion. A plurality of balls 170 are disposed between the 123s. For example, one side of the adjusting slide rail 133 and the second sliding portion 123 facing each other is provided with a circular arc groove, that is, an arc of the adjusting sliding rail 133 facing the second sliding portion 123 is respectively provided with an arc The groove 136, the second sliding portion 123 is disposed on one side of the adjusting slide rail 133 with a circular arc groove 124, and the ball 170 is disposed on the circular arc groove 136 of the adjusting sliding rail 133 and the circular arc groove of the second sliding portion 123. Between 124, the ball 170 can be defined between the adjustment rail 133 and the first sliding portion 113 by two semicircular arc grooves, and the ball 170 adjusts the friction between the slide rail 133 and the second sliding portion 123. The force is smaller, which is beneficial to the second housing 120 along the adjustment rail 1 The sliding of the second housing 120 makes the sliding of the second housing 120 smoother and smoother, thereby making the angle adjusting device 100 rotate more smoothly and smoothly.

In order to realize the connection between the adjusting rail 133 and the angle adjusting block 130, for example, as shown in FIG. 2, the angle adjusting block 130 and the adjusting rail 133 are respectively provided with screw holes, the angle adjusting block 130 and the adjusting rail 133. The connection is fixed by the screw 138, and the angle adjustment block 130 and the adjustment rail 133 can be firmly connected by the screw 138, and the adjustment of the adjustment rail 133 is facilitated.

In order to make the connection structure of the angle adjusting block 130 and the adjusting rail 133 simpler, the connecting member is reduced, for example, the angle adjusting block 130 and the adjusting rail 133 are welded, so that the angle adjusting block 130 and the adjusting rail 133 are directly welded and fixed. No screws are needed, making the connection between the two more convenient and the structure simpler.

In order to make the angle adjustment device 100 more stable and to make the angle adjustment device 100 simpler in structure, facilitating assembly of the angle adjustment device 100, in one embodiment, the adjustment slide 133 on at least one face is The angle adjustment block 130 is integrally connected. For example, as shown in FIGS. 2 and 3, the adjustment rail 133 on the side of the angle adjustment block 130 facing the first curved surface portion 111 is integrally connected with the angle adjustment block 130, for example, the angle adjustment block faces the second curved surface. An adjustment rail 133 on one side of the portion is integrally connected to the angle adjustment block.

For example, as shown in FIGS. 7 and 8, the adjustment rail 133 on one side of the angle adjustment block 130 facing the first curved surface portion 111 and the adjustment rail 133 on the side facing the second curved surface portion 121 are both at the angle The adjusting block 130 is integrally connected, so that since the adjusting sliding rail 133 is integrally formed with the angle adjusting block 130, the connection strength between the adjusting sliding rail 133 and the angle adjusting block 130 is higher, and the connection is more stable, so that the angle adjusting device 100 It is more stable during use and effectively reduces the number of components of the angle adjustment device 100, facilitating assembly of the angle adjustment device 100.

In order to make the adjustment precision of the angle adjustment higher, in one embodiment, as shown in FIG. 1 , one side of the angle adjustment block 130 is slidably abutted against the first housing 110 , for example, the angle adjustment block 130 is abutted. A first metric bit 137 is disposed at a position of the first housing 110, and a second metric bit 115 is disposed at a position of the first housing 110 abutting the angle adjustment block 130. Thus, when the angle adjustment block is When the displacement is 130, the first metric bit 137 and the second metric bit 115 generate a relative displacement, so that the user can know the displacement distance of the angle adjustment block 130, thereby acquiring the first housing 110 and the second housing 120. The angle of rotation between, for example, the first metric bit and the second metric bit are respectively provided with scales, so that the angle of rotation between the first housing 110 and the second housing 120 can be more accurately reflected by the scale It is beneficial to improve the accuracy of the angle adjustment. In this embodiment, the scales of the first metric bit and the second metric bit are vernier scales, and the angle adjustment is displayed by the vernier scale, so that the read angle is more convenient.

Specifically, the angle adjusting device 100 in each embodiment uses a curved sliding rail to convert the angle adjusting block from a linear motion to a relative rotational motion between the first housing and the second housing, thereby achieving angular stitching. Since the adjusting slide rail is a curved guide rail, the adjusting slide rail and the arc adjusting direction are changed to a 90 degree setting, so that the gap between the adjusting sliding rail and the first sliding portion and the second sliding portion is not enlarged to the screen (LED screen). The splicing accuracy greatly improves the splicing accuracy of the display.

In order to realize the connection between the first housing 110 and the angle adjustment block 130 and the connection of the second housing 120 and the angle adjustment block 130, the connection between the angle adjustment block 130 and the first housing 110 and the second housing 120 is further improved. For stability, it is worth mentioning that the first sliding portion 113 and the second sliding portion 123 may be guide rails disposed on the first housing 110 and the second housing 120, and in one embodiment, at least one surface The adjusting slide rail 133 is provided with a sliding slot, and the first sliding portion 113 and/or the second sliding portion 123 are slidably disposed in the corresponding sliding slot, that is, two faces on the angle adjusting block 130. The adjusting slide rail 133 of at least one of the plurality is provided with a sliding groove. For example, as shown in FIG. 8, the adjusting block 130 of the angle adjusting block 130 facing the surface of the first curved surface portion 111 is provided with a sliding groove 134. The first sliding portion 113 is slidably disposed in the corresponding sliding groove 134. For example, the adjusting block 130 of the angle adjusting block 130 faces the adjusting rail 133 on the surface of the second curved surface portion 121, and the second sliding portion 123 is slidably disposed in the corresponding sliding slot, that is, In the embodiment, the first sliding portion 113 and/or the second sliding portion 123 are provided as guide rails, or are provided in the shape of guide rails, such that the first sliding portion 113 and the second sliding portion 123 will be restricted to the adjustment rails 133. The movement in the sliding slot further makes the connection between the first housing 110 and the angle adjusting block 130, and the angle adjusting block 130 and the second housing 120 more stable, so that the angle adjusting block 130 is in the first housing 110. When sliding up, the second housing 120 slides more smoothly on the first housing 110.

In order to achieve the connection of the first housing 110 and the angle adjustment block 130 and the connection of the second housing 120 to the angle adjustment block 130, in one embodiment, the first sliding portion 113 and/or the second sliding portion 123 may also be The first sliding portion 113 and/or the second sliding portion 123 are provided with a card slot, and the first housing 110 and/or the second housing 120 are disposed on the adjusting rail 133. The first sliding portion 113 is provided with a card slot, and the first housing 110 is slidably sleeved in the corresponding slot by the card slot. On the adjusting slide rail 133, for example, as shown in FIG. 8, the second sliding portion 123 is provided with a card slot 125, and the second housing 120 is slidably sleeved on the corresponding adjusting rail through the card slot 125. 133, for example, the card slot 125 is disposed obliquely to the axial direction of the screw hole 132. For example, the card slot 125 disposed on the first sliding portion 113 has the same curvature as the first curved surface portion 111. For example, the card slot 125 disposed on the second sliding portion 123 has the same curvature as the second curved portion 121, for example The adjusting rail 133 is a T-shaped rail. For example, the adjusting rail 133 has a T-shaped cross section. For example, the card slot 125 has a T-shaped cross section. Thus, the second housing 120 is inserted through the card slot 125. Close to the adjustment rail 133. In other embodiments, the first housing 110 and/or the second housing 120 are clamped on the adjustment rail 133 by the card slot, such that the first housing 110 and the second housing 120 and the adjustment rail 133 are disposed. The connection is more stable.

In order to facilitate the rotation of the screw 140, for example, as shown in FIG. 2, the screw 140 protrudes from one end of the cover plate 160 and is provided with a knob member 180. For example, the screw 140 is connected to the knob member 180 through a pin 142. For example, one end of the screw 140 is provided with a fixing groove, and the knob member 180 is provided with a through groove. The pin 142 is disposed in the through groove and the fixing groove, so that the knob member 180 is fixed at one end of the screw 140, and the user turns the knob member 180 by twisting. The screw 140 can be rotated to make the operation of the screw 140 more convenient and quick.

In order to make the angle adjustment accuracy higher, for example, the twisting member 180 is provided with a bead bolt 141, and the screw 140 is connected to the rotating member 180 through the bead bolt 141, for example, the screw 140 passes The bead bolt 141 is inserted into the knob member 180. Thus, by providing the bead bolts 141, it is easier to drive the screw 140 to rotate when the knob member 180 rotates, thereby making the operation of the screw 140 more convenient.

In the above embodiment, the rotation of the screw is rotated by the rotary knob member 180 to adjust the angle, and the angle adjustment block is linearly moved. The angle adjustment block drives the second housing through the curved guide rail to generate rotation relative to the first housing, thereby achieving angle adjustment. . The knob member 180 is arranged to position the bead bolt 141, and the positioning angle is 36 degrees, that is, the rotation is divided into 10 equal parts, which makes the adjustment precision 10 times, the rotation knob is 1 degree, and the bead positioning point is adjusted. The amount is 0.1 degrees, which makes the angle adjustment accuracy higher.

In the above embodiment, the curved guide rail is used to convert the linear motion of the angle adjustment block into the rotational motion of the right housing, thereby achieving angle splicing. The structural guide rail is a curved guide rail, and the curved guide rail and the arc adjustment direction are changed to 90 degrees. At this time, the gap of the guide rail is not enlarged to the stitching precision of the screen, so the stitching precision of the display screen is greatly improved, and the curved rail is additionally The balls are mounted inside to reduce the gap of the curved rails, and the sliding friction is rolling friction.

In addition, by rotating the knob and the screw adjustment system, the angular adjustment block is linearly moved, and the angle adjustment block is driven to rotate by the right casing through the curved guide rail, and the knob has a bead screw positioning, and the positioning angle is 36 degrees, that is, the rotation is divided into 10 Equally, this makes the adjustment accuracy up to 10 times, the turn knob is 1 degree, and the bead positioning point adjustment is 0.1 degree. Moreover, by adjusting the display angle by the vernier angle, the rotary knob can drive the angle adjustment block to move, and the vernier type read angle.

In one embodiment, as shown in FIG. 9, a splicing screen 10 is provided, including at least two cabinets 200, and further includes the angle adjusting device 100 described in any of the above embodiments, the first housing 110. The first connecting portion 112 is connected to a casing 200, and the second connecting portion 122 of the second casing 120 is connected to the other casing 200, that is, the two casings are the first casing. The other is a second casing. The first connecting portion 112 of the first casing 110 is connected to the first casing, and the second connecting portion 122 of the second casing 120 is connected to the second casing. Specifically, the box 200 is used to install an LED screen, and the angle adjusting device 100 is connected to one side of the box 200 facing away from the LED screen, that is, the first connecting portion 112 is connected to a side of the box 200 facing away from the LED screen. The second connecting portion 122 is connected to one side of the other housing 200 facing away from the LED screen.

In this embodiment, the splicing screen includes four cabinets 200 for mounting LED screens, and the LED screens are mounted on one side of the cabinet 200 facing away from the angle adjusting device 100, wherein two cabinets on the same side The two housings 200 are connected to each other, and the two housings 200 on the other side are connected to each other, and the angle adjusting device 100 is respectively connected to the four housings 200 on both sides by screws, so that when the angle adjusting device 100 rotates, the side will be driven. The two cases 200 produce rotation relative to the two cases 200 on the other side, thereby achieving angular adjustment of the splicing screen.

In order to lock the angle adjusting device 100 on the case 200, in one embodiment, the angle adjusting device 100 is further provided with a locking mechanism for locking the first housing and the second housing. On the LED box. In the following embodiments, the housing may be the first housing 110 or the second housing 120. The curved surface portion may be the first curved surface portion 111 or the second curved surface portion 121. The connecting portion may be the first portion. The connecting portion 112 may also be the second connecting portion 122, that is, in the following embodiment, the locking mechanism may be applied to the first housing 110 and/or the second housing 120 on the angle adjusting device 100, the following embodiments The first housing 110 and the second housing 120 are represented by a housing, and the curved surface portion and the connecting portion are similar.

As shown in FIG. 10, it is an embodiment of the locking mechanism 30 for fixing the housing 150 to the housing 200, including a pressing block 310, a rotating member 320 and a nut 330. The housing 150 includes an integral body. The curved surface portion 151 and the connecting portion 152 are connected. The connecting portion 152 is provided with a rotating hole (blocked in the figure) and a fixing hole 154. The rotating member 320 is disposed in the rotating hole, and the nut 330 is disposed in the fixing hole 154. The cap 330 includes a nut portion 331 and a brim portion 332. The nut portion 331 is disposed in the fixing hole 154. The width of the brim portion 332 is greater than the width of the fixing hole 154, and the brim portion 332 is movably abutted. On the surface of the connecting portion 152; one end of the pressing block 310 is connected to the rotating member 320, and the pressing block 310 is rotatably disposed on the connecting portion 152 about a central axis of the rotating member 320, and the The movable portion of the pressing block 310 is interposed between the brim portion 332 and the connecting portion 152, and both surfaces of the pressing block 310 abut against the brim portion 332 and the connecting portion 152, respectively.

In this embodiment, the nut 330 is used for connecting with a screw or a screw on the box 200. The connecting portion 152 has a first surface facing the box 200 and a second surface facing away from the box 200, and the nut 330 is close to One end of the first surface is connected to the screw on the box 200, and the brim portion 332 of the nut 330 is movably abutted against the second surface of the connecting portion 152. For example, the brim portion 332 abuts against the end of the fixing hole 154 away from the box 200. The outer rim portion of the case 200 is connected to the nut 200 after the screw on the case 200 is connected to the nut portion 331. Since the distance between the cap portion 332 of the nut 330 and the other end of the screw is larger than the connection portion 152 is the thickness of the box 200, that is to say. There is a gap between the brim portion 332 and the connecting portion 152, and the brim portion 332 of the nut 330 is movably abutted against the second surface of the connecting portion 152, but at this time, the housing 150 is not locked on the housing 200, and the housing 150 is relatively Loose.

In this embodiment, as shown in FIG. 10 and FIG. 12, in the initial state, the pressing block 310 is on one side of the nut 330, the pressing block 310 is rotatably disposed on the second surface of the connecting portion 152, and the pressing block 310 is rotated by the rotating member 320. The central axis is rotated by the rotational axis such that, as shown in FIG. 11, when the pressure block 310 is rotated from a position away from the nut 330 to near the nut 330, and inserted between the brim portion 332 and the second surface of the connecting portion 152 The cap portion 332 can be closely abutted against the connecting portion 152 through the pressing block 310, so that the gap between the pressing block 310 and the brim portion 332 and the connecting portion 152 is eliminated, so that the originally loose housing 150 is locked in the box body. 200 on. Since the pressure block 310 can be easily rotated, when the pressure block 310 is rotated between the brim portion 332 and the connecting portion 152, the locking of the housing 150 is achieved, so that the connection between the housing 150 and the housing 200 is more stable. Moreover, the locking between the housing 150 and the case 200 is quicker and more convenient.

In order to allow the compact 310 to be inserted more conveniently and to provide a more secure connection between the housing 150 and the housing 200, in one embodiment, as shown in Figures 10 and 11, the thickness of the compact 310 From the side close to the nut 330 to the other side, for example, the pressure block 310 has a wedge-shaped structure. For example, the pressure block 310 has a wedge-shaped cross section, and the pressing block 310 rotates toward the nut 330. One side is the side close to the nut 330, so that the thickness of the side of the pressing block 310 near the nut 330 is small, which facilitates the rapid insertion of the pressing block 310 between the brim portion 332 and the connecting portion 152, and As the width of the insertion of the pressing block 310 increases, the thickness of the pressing block 310 gradually increases, so that the gap between the pressing block 310 and the brim portion 332 and the connecting portion 152 is gradually reduced, so that the pressing block 310 and the brim portion 332 and the connecting portion 152 are gradually reduced. The interaction between the two is greater, so that the connection between the housing 150 and the case 200 is more stable, so that the housing 150 can be more tightly locked to the case 200.

In order to enable the compact 310 to be flexibly rotated and to secure the locking between the housing 150 and the housing 200, in one embodiment, as shown in Figure 13, the thickness of the connecting portion 152 is along the pressure The direction in which the block 310 is inserted between the brim portion 332 and the connecting portion 152 is gradually increased. For example, the thickness of the connecting portion 152 is gradually increased from the edge of the connecting portion 152 toward the position close to the fixing hole 154. That is, the thickness of the connecting portion 152 gradually increases as the pressing block 310 moves from the position of the connecting portion 152 away from the fixing hole 154 to the position close to the fixing hole 154, so that the connecting portion 152 is far away. The thickness of the fixing hole 154 is small, so that the gap between the connecting portion 152 and the pressing block 310 is large, which facilitates the flexible rotation of the pressing block 310, and facilitates the convenient insertion of the pressing block 310 into the brim portion 332 and the connecting portion 152. Between, as the pressure block 310 moves toward a position close to the fixing hole 154, the thickness of the connecting portion 152 gradually increases, so that the gap between the pressing block 310 and the connecting portion 152 is reduced, when the pressing block 310 is inserted into the brim portion 332 and connected Between the portions 152, the thickness of the connecting portion 152 Larger, the gap between the pressing block 310 and the brim portion 332 and the connecting portion 152 is smaller, so that the interaction force between the pressing block 310 and the brim portion 332 and the connecting portion 152 is greater, so that the housing 150 can be more Fastened to the housing 200.

In order to enable the pressure block 310 to be securely clamped between the nut 330 and the connecting portion 152, in one embodiment, as shown in FIGS. 10 and 12, the pressure block 310 is provided with a groove 311, the pressure The block 310 is movably sleeved on the outer side of the nut portion 331 by the groove 311. For example, the nut portion 331 is movably disposed in the groove 311, specifically, when the pressure block 310 is rotated to the cap portion 332 and When the connecting portion 152 is between the connecting portions 152, the pressing block 310 is sleeved on the outer side of the nut portion 331 through the groove 311, so that the pressing block 310 is sufficiently pressed between the brim portion 332 and the connecting portion 152, so that the pressing block 310 is pressed into the brim. The width between the portion 332 and the connecting portion 152 is larger, and the contact area with the brim portion 332 and the connecting portion 152 is increased. Further, the pressing block 310 can be laterally offset from the nut portion 331 by the side wall of the recess 311. The restriction is made such that the nut 330 can be sufficiently fixed within the fixing hole 154 and the housing 150 is more tightly locked to the case 200.

In order to make the housing 150 more securely locked, in one embodiment, please refer again to FIG. 10 and FIG. 12, the groove 311 has an arc shape, for example, the groove 311 is an arc groove. For example, the groove 311 has a semi-circular cross section. For example, the groove 311 is a semi-circular groove, and the shape of the groove 311 is more closely matched with the shape of the nut 330, which is favorable for the pressure block 310 to be fully pressed. Between the cap portion 332 and the connecting portion 152, the width of the pressing block 310 between the cap portion 332 and the connecting portion 152 is made larger, so that the contact area between the pressing block 310 and the brim portion 332 and the connecting portion 152 is larger. The sleeve 150 is more stably locked. In addition, the displacement of the nut 330 is effectively prevented by the limitation of the groove 311, so that the locking effect of the pressure block 310 is better.

In order to make the rotation of the pressing block 310 more stable, in an embodiment, as shown in FIG. 10 to FIG. 12, the connecting portion 152 is provided with a curved guiding groove 155 at a center of the geometric center of the rotating hole. The pressing block 310 is disposed with a sliding member 340 , and the sliding member 340 is slidably disposed in the guiding groove 155 . For example, the guiding groove 155 has an arc-shaped cross section. For example, the rotating hole has a circular cross section, and the center of the curved guiding groove 155 is the center of a circular cross section of the rotating hole. For example, the rotating member 320 has a cylindrical structure. The circular shape of the circular cross section of the rotating member 320 coincides with the center of the circular cross section of the rotating hole, so that when the pressing block 310 is rotated about the central axis of the rotating member 320, the pressing block 310 drives the sliding member 340 in the guiding groove. The sliding member 340 is restrained by the side wall of the guiding groove 155, and acts on the pressing block 310 to rotate the pressing block 310 in the direction of the guiding groove 155, thereby making the rotation of the pressing block 310 more stable.

In order to allow the slider 340 to slide more smoothly in the guide groove 155, for example, the slider 340 has a cylindrical structure, for example, the slider 340 has a circular cross section, for example, the slider 340 slides on the The portion in the guide groove 155 is cylindrical, so that since the outer surface of the portion in which the slider 340 slides in the guide groove 155 has a circular arc structure, the friction between the slider 340 and the side wall of the guide groove 155 is small. This facilitates sliding of the slider 340 more smoothly within the guide groove 155.

In order to further make the pressing block 310 rotate more smoothly, for example, as shown in FIG. 12, the slider 340 is disposed at one end of the pressing block 310 away from the rotating member 320. Thus, one end of the pressing block 310 rotates around the rotating member 320, and the other end is guided by the sliding member 340, so that both ends of the pressing block 310 can be guided, thereby making the rotation of the pressing block 310 more stable.

In order to fix the sliding member 340, the sliding member 340 is prevented from slipping out of the guiding groove 155. In one embodiment, one end of the sliding member 340 is connected to the pressing block 310, and the other end of the sliding member 340 is provided with a blocking portion. The stopping portion abuts against a side of the connecting portion 152 facing away from the pressing block 310. That is, the blocking portion abuts against the outer edge portion of the guiding groove 155, and the blocking portion abuts against the first surface of the connecting portion 152. Thus, since the blocking portion abuts against the side of the connecting portion 152 facing away from the pressing block 310, The other end of the sliding member 340 abuts against the side of the connecting portion 152 toward the pressing block 310 through the pressing block 310, so that the two ends of the sliding member 340 respectively block the two surfaces of the connecting portion 152, thereby enabling the sliding member 340 to be stabilized. The ground slides in the guide groove 155 to effectively prevent slippage from the guide groove 155.

In order to enable the pressing block to rotate about the central axis of the rotating member, in one embodiment, the pressing block is integrally connected with the rotating member, and the rotating member is rotatably disposed in the rotating hole, so that the rotation of the rotating member in the rotating hole drives the pressing block to rotate. In one embodiment, the pressure block is provided with a sleeve hole, and the rotating member is sleeved in the sleeve hole, and the two ends of the rotating member respectively abut against the side of the connecting portion facing away from the pressing block and the back of the pressing block One side of the connecting portion 5 is described such that the pressing block rotates around the rotating member.

In order to enable the pressure block 310 to flexibly rotate and to prevent the pressure block 310 from being detached from the connecting portion 152, in one embodiment, as shown in FIG. 14, the rotating member 320 includes a screw member 321 and a sleeve 322. The sleeve 322 is rotatably disposed in the rotating hole 153, and the pressing block 310 is provided with a sleeve hole 313. The inner side surface of the sleeve 322 and the side wall of the sleeve hole 313 are respectively provided with internal threads. The sleeve 322 is fixedly connected to the pressing block 310 by the screwing member 321 . The end of the sleeve 322 away from the pressing block 310 is provided with an abutting portion 323 , and the abutting portion 323 abuts the The connecting portion 152 faces away from one side of the compact 310. For example, the screw member 321 is a screw, and the screw member 321 is a screw. The screw member 321 is disposed in the sleeve 322 and the sleeve hole, so that the screw member 321 is respectively The sleeve 322 and the pressing block 310 are screwed together, so that the sleeve 322 is fixedly connected to the pressing block 310, and the sleeve 322 is rotatably disposed in the rotating hole 153, so that the pressing block 310 can be flexibly rotated, and since the sleeve 322 is provided The abutting portion 323 can effectively prevent the pressing block 310 from being detached from the connecting portion 152. In order to prevent the sleeve 322 from protruding from the side of the connecting portion 152 facing away from the pressing block 310, for example, the rotating hole 153 is provided with a step surface. The abutting portion 323 abuts against the step surface, so that the sleeve 322 is restrained in the rotating hole 153, and the detachment of the pressing block 310 from the connecting portion 152 is effectively prevented.

In order to prevent the pressure block 310 from being unlocked from between the brim portion 332 and the connecting portion 152, in one embodiment, the connecting portion 152 is provided with a stopper, and the pressing block 310 is away from the screw One side of the cap 330 is movably abutted against the stopper. For example, the pressure block 310 is provided with a screw hole, and the stopper is a bead bolt, and the bead bolt is screwed into the screw hole. The screw hole is disposed on a side of the pressing block 310 away from the nut 330, such that when the pressing block 310 is rotated out from between the brim portion 332 and the connecting portion 152, the pressing block 310 is at the connecting portion 152. When the surface rotates, it will abut against the bead bolt, thereby causing the pressing block 310 to be blocked, so that the position of the pressing block 310 after unlocking is restricted.

In order to make the user operate the pressure block 310 more conveniently, in one embodiment, as shown in FIG. 9 to FIG. 14, the pressure block 310 is provided with a push button 312 for providing a user with a point of application, for example The pressing block 310 is provided with a push button 312 protruding from a side of the connecting portion 152. For example, the pressing block 310 is integrally connected with the push button 312, so that the user can apply force to the pressing block 310 through the push button 312. The operation of the pressing block 310 is made more convenient. For example, the push button 312 has a spherical structure, so that the user can make the push button 312 more comfortable.

In order to make the operation of the pressure block 310 more difficult, for example, the push button 312 is disposed at one end of the pressing block 310 away from the rotating member 320. According to the principle of the lever, the push button 312 is disposed on one end of the pressure rotating member 320 of the pressing block 310. The pressure block 310 is rotated about the central axis of the rotating member 320. Therefore, the moment of the user's force acting on the push button 312 is maximized, and the force that the user pushes the pressure block 310 through the push button 312 is minimized, thereby causing the user to push. The rotation of the pressure block 310 is more labor-saving.

The technical features of the above-described embodiments may be arbitrarily combined. For the sake of brevity of description, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be considered as the scope of this manual.

The above-described embodiments are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, the scope of the invention should be determined by the appended claims.

Claims (20)

An angle adjusting device, comprising: a first housing, a second housing, an angle adjusting block, a screw and at least one cover; One end of the first housing is rotatably connected to the cover plate, the first housing includes a first curved surface portion and a first connecting portion connected to each other, and the first curved surface portion is provided with a first sliding portion; The second housing includes a second curved surface portion and a second connecting portion connected to each other, and the second curved surface portion is provided with a second sliding portion; the first connecting portion and the second connecting portion are respectively used for connecting the first sliding portion a box body and a second box body; The angle adjusting block has a curved structure, the angle adjusting block is provided with a screwing portion, the screwing portion is provided with a screw hole, and the axial direction of the screw hole is parallel to the first curved surface portion and the second portion a curved surface portion, the angle adjusting block is disposed between the first curved surface portion and the second curved surface portion, the angle adjusting block faces one side of the first curved surface portion and faces the second curved surface portion One side of the adjusting slide rail is disposed on each side, and the adjusting slide rails on the two surfaces are respectively slidably abutted with the first sliding portion and the second sliding portion, and the adjusting rail on at least one side is inclined to The axial direction of the screw hole, and the adjusting slide rail is linear or curved; When the adjustment rail is linear, and the first box and the second box are disposed at 180 degrees, the adjustment rails on the two sides are not parallel and are not perpendicular to the first box And a second case; When the adjusting slide rail is curved, the adjusting slide rails on the two faces are along the surface of the angle adjusting block, from one end close to the first connecting portion to an end close to the second connecting portion Gradually bend The cover plate is provided with a through hole, and the through hole is aligned with the screw hole; The screw is rotatably disposed in the through hole, and the screw is fixedly connected to the cover. The angle adjusting device according to claim 1, wherein the number of the cover plates is two, and the two cover plates are respectively connected to two ends of the first casing, and the second casing The two ends of the body respectively abut the two cover plates, and the screw is fixedly connected to the two cover plates respectively. The angle adjusting device according to claim 1, wherein a ball is disposed between the adjustment rail and the first sliding portion and/or between the adjustment rail and the second sliding portion. The angle adjusting device according to claim 1, wherein the adjusting slide rails on the two faces are inclined at an angle different from an axial direction of the screw hole, and the adjusting slide rails on the two faces The ones are respectively inclined toward the axial sides of the screw holes. The angle adjusting device according to claim 4, wherein the screw protrudes from one end of the cover plate to be provided with a knob member, the twisting member is provided with a bead bolt, and the screw passes through the bead bolt Connected to the torsion member. The angle adjusting device according to claim 1, wherein said adjustment rail on at least one side is integrally connected to said angle adjustment block. The angle adjusting device according to claim 2, wherein the adjustment rail on at least one side is integrally connected to the angle adjustment block. The angle adjusting device according to claim 3, wherein the adjustment rail on at least one side is integrally connected to the angle adjustment block. The angle adjusting device according to claim 4, wherein said adjustment rail on at least one side is integrally connected to said angle adjustment block. The angle adjusting device according to claim 5, wherein the adjustment rail on at least one side is integrally connected to the angle adjustment block. The angle adjusting device according to claim 1, wherein the adjusting slide rail on at least one surface is provided with a sliding groove, and the first sliding portion and/or the second sliding portion are slidably disposed correspondingly Inside the sliding groove. The angle adjusting device according to claim 2, wherein the adjusting slide rail on at least one surface is provided with a sliding groove, and the first sliding portion and/or the second sliding portion are slidably disposed correspondingly Inside the sliding groove. The angle adjusting device according to claim 3, wherein the adjusting slide rail on at least one surface is provided with a sliding groove, and the first sliding portion and/or the second sliding portion are slidably disposed correspondingly Inside the sliding groove. The angle adjusting device according to claim 4, wherein the adjusting slide rail on at least one surface is provided with a sliding groove, and the first sliding portion and/or the second sliding portion are slidably disposed correspondingly Inside the sliding groove. The angle adjusting device according to claim 1, wherein the first sliding portion and/or the second sliding portion are provided with a card slot, the first housing and/or the second housing The card slot is slidably sleeved on the corresponding adjustment rail. The angle adjusting device according to claim 2, wherein the first sliding portion and/or the second sliding portion are provided with a card slot, the first housing and/or the second housing The card slot is slidably sleeved on the corresponding adjustment rail. The angle adjusting device according to claim 3, wherein the first sliding portion and/or the second sliding portion are provided with a card slot, the first housing and/or the second housing The card slot is slidably sleeved on the corresponding adjustment rail. The angle adjusting device according to claim 4, wherein the first sliding portion and/or the second sliding portion are provided with a card slot, the first housing and/or the second housing The card slot is slidably sleeved on the corresponding adjustment rail. The angle adjusting device according to claim 1, wherein the number of the adjusting slide rails on each side is two, and the two adjusting rails disposed on the same surface are oppositely disposed, and mutually parallel. A splicing screen comprising at least two boxes, characterized by further comprising the angle adjusting device according to any one of claims 1 to 19, the first connecting portion of the first casing and a box The body is connected, and the second connecting portion of the second casing is connected to the other of the casings.

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