CN108813920A - Folding table and its folded frame with folded frame - Google Patents

Abstract

The invention discloses a folding table with a folding frame and the folding frame thereof, belonging to the field of furniture. It mainly includes the pressure-bearing frame A and the pressure-bearing frame B connected by hinges, the pressure-bearing frame A and the pressure-bearing frame B are respectively hinged with the leg frame A and the leg frame B through the hinge axis A and the hinge axis B, and the pressure frame B is away from the The sum of the distance H1 from the side surface of one end of the hinge to the center of the hinge axis and the distance h from the center of the hinge axis to the upper surface of the pressure frame A is equal to the distance from the center of the hinge axis B to the upper surface of the pressure frame B and the distance from the center of the hinge axis B to the leg frame The sum of the distances from the soles of the feet of B, and the distance from the center of the hinge axis B to the end surface of the side of the adjacent pressure frame B is greater than or equal to the distance to the outer surface of the leg frame B, and greater than or equal to the distance to the upper end surface of the leg frame B. According to the different lengths of the upper surfaces of the two pressure-bearing frames, the present invention realizes contour folding or height-increasing folding, is convenient to use, and realizes various folding modes. The present invention is mainly used for folding furniture.

Description

Folding table with folding frame and its folding frame

technical field

The invention belongs to the field of furniture, and in particular relates to a folding table with a folding frame and the folding frame thereof.

Background technique

At present, the foldable frame or foldable furniture disclosed in the prior art, such as the invention patent application with application number 201710888955.9, discloses a simple foldable table, including a pair of foldable table frames and a The table legs on the frame are connected by a hinge assembly between the two table frames, and a table board is installed on the table frame, and the two table boards rotate downwards in one direction to fold them, and the table legs Rotating and installed on the table frame, it can be rotated to the back of the table. After folding, the volume is relatively small, which is convenient for transportation and storage. Although the above-mentioned folding table can be unfolded and folded conveniently and is more practical, it has a single function after being unfolded, and the desktop can only have one usable area and one height mode.

Contents of the invention

The purpose of the present invention is to overcome the above-mentioned defects and provide a folding table with a folding frame and its folding frame, the pressure-bearing frames on both sides of the table can be folded down by 90°, and the folded pressure-bearing frames can be used as leg frames , and according to the different lengths of the upper surfaces of the two pressure-bearing frames, it can be folded at the same height or increased in height, which is convenient to use and realizes various folding methods.

The folding frame includes a frame body, and the frame body includes a pressure frame A and a pressure frame B connected by a hinge at one end, and the pressure frame A and the pressure frame B can be relatively rotated by 0°-180° through the hinge shaft of the hinge , the other end of the pressure frame A is hinged to the leg frame A through the hinge axis A, the other end of the pressure frame B is hinged to the leg frame B through the hinge axis B, and the pressure frame A and the pressure frame B are respectively connected to the hinged leg frame A and leg frame B can be rotated relative to 0°-90°; the length of the upper surface of pressure frame A is greater than or equal to the length of the upper surface of pressure frame B; When the leg frames B are vertical respectively, the heights of the pressure-bearing frame A and the pressure-bearing frame B when they are unfolded to the horizontal are equal; the hinge shaft is set at the bottom of the pressure-bearing frame A and the pressure-bearing frame B, and the end of the pressure-bearing frame B is away from the hinge The sum of the distance H1 from the side end surface of the hinge axis to the center of the hinge axis and the distance h from the center of the hinge axis to the upper surface of the pressure frame A is equal to the distance from the center of the hinge axis B to the upper surface of the pressure frame B and the distance from the center of the hinge axis B to the bottom surface of the leg frame B The sum of the distances, and the distance from the center of the hinge axis B to the side end surface of the adjacent pressure frame B is greater than or equal to the distance to the outer surface of the leg frame B, and greater than or equal to the distance to the upper end surface of the leg frame B. In this way, when the pressure-bearing frame B is folded at 90°, the pressure-bearing frame B can be used as a "new" leg frame, and it can ensure that the pressure-bearing frame A remains horizontal, and whether the leg frame B is in the folded or unfolded state, None of them exceed the side end surface of the pressure frame B, that is, to achieve equal-height folding.

Further, the pressure frame A and the pressure frame B are respectively provided with a shaft sleeve A and a shaft sleeve B, the hinge axis A passes through the shaft sleeve A, the hinge axis B passes through the shaft sleeve B, and the center of the hinge axis B is close to The distance from the side end surface is equal to the distance from the outer surface of the leg frame B to the upper end surface of the leg frame B.

When the pressure-bearing frame A, the pressure-bearing frame B and the connected leg frame are fully unfolded, when the pressure-bearing frame A is folded downward by 90°, the outer surface of the leg frame B is flush with the bottom surface of the leg frame A, which is Create conditions for heightening and folding.

Further, the distance from the center of the hinge axis A to the near side end surface is equal to the distance to the outer surface of the leg frame A, and equal to the distance to the upper end surface of the leg frame A. It is guaranteed that when the pressure frame A is folded at 90° and the leg frame A is perpendicular to the pressure frame A, the outer surface of the leg frame A is in full contact with the ground. When the pressure frame A is folded, the leg frame A can be used as a "base" use.

Preferably, the length of the upper surface of the pressure frame A is equal to that of the pressure frame B, and staggered legs are provided on the side of the leg frame B or the leg frame A. This method is equal-frame folding, and the length of the upper surface of the pressure-bearing frame is equal to the distance from the side end surface of the end of the pressure-bearing frame away from the hinge to the center of the hinge axis.

Preferably, the length of the upper surface of the pressure-bearing frame A is greater than the length of the upper surface of the pressure-bearing frame B, and the difference D between the upper surface lengths of the pressure-bearing frame A and the pressure-bearing frame B is smaller than the thickness d of the leg frame A; The side is provided with staggered legs and feet, and the effective staggered length is the thickness d of the leg frame A minus the length difference D of the upper surface. The effective staggered length is the distance from the sole surface of the non-staggered part of the leg frame B to the sole surface of the staggered legs. When fully unfolded, the pressure frame A is folded downward to achieve heightened folding, and the unstaggered part of the leg frame B "stands" on the leg frame A, so that the pressure frame B remains horizontal.

Preferably, the length of the upper surface of the pressure-bearing frame A is greater than the length of the upper surface of the pressure-bearing frame B, and the difference D between the upper surface lengths of the pressure-bearing frame A and the pressure-bearing frame B is greater than the thickness d of the leg frame A and smaller than the thickness of the frame body d1: A pad is provided on the side of the leg frame A opposite to the leg frame B, and the thickness of the pad is equal to the length difference D of the upper surface minus the thickness d of the leg frame A. During this heightening and folding, the leg frame B stands on the cushion block of the leg frame A, thereby keeping the pressure frame B level.

Preferably, the length of the upper surface of the pressure-bearing frame A is greater than the length of the upper surface of the pressure-bearing frame B, and the difference D between the upper surfaces of the pressure-bearing frame A and the pressure-bearing frame B is greater than the thickness d1 of the frame body; Foldable extension shelf.

Further, the hinge of the pressure frame A and the pressure frame B is provided with a positioning mechanism, the positioning mechanism includes a positioning plate and a positioning nail, the positioning plate is hinged to the outside of the pressure frame A, and the positioning nail is installed on the pressure frame On the outer side of B, a positioning notch is arranged on the positioning plate, and the positioning nail matches the positioning notch.

The folding table with a folding frame includes the above-mentioned folding frame, and the pressure-bearing frame A and the pressure-bearing frame B are respectively provided with panels.

Further, a switching mechanism is provided between the pressure-bearing frame A and the pressure-bearing frame B of the folding frame, and the switching mechanism includes hinge 1, a two-way hook is hinged at the bottom of hinge 1, and the hinge shaft of hinge 1 and the hinge Axis concentric. The switching panel can be fixed on the hinge one, and a positioning nail matched with a two-way hook is provided on its adjacent panel or its fixing part. The switching panel on the side of the pressure-bearing frame A or the pressure-bearing frame B is an extension of the other side panel, and when the pressure-bearing frame and the connected panel are completely folded, the upper surface area will not increase.

Further, the frame body is provided with more than one set of flap mechanisms, the flap mechanism, the flap mechanism includes a hinge plate one and a flap support assembly; the hinge plate one is hinged on a support rod fixedly connected to the frame body , the flap support assembly includes a folding connecting rod that can be self-locked at 180°, one end of the folding connecting rod is hinged to the frame body, and the other end of the folding connecting rod is provided with a hinge plate two; the hinge shaft of the hinge plate one close to the hinge is connected to the The centerlines of the hinge shafts are coincident, and the bottom of the hinge is provided with a positioning nail that cooperates with the two-way hook.

Further, the two ends of the frame body are provided with auxiliary leg support frames, and the auxiliary leg support frames include auxiliary leg hinge plates, and auxiliary leg support plates are fixed on the auxiliary leg hinge plates, and the auxiliary leg hinge plates are respectively connected with The two sides of pressure-bearing frame A and pressure-bearing frame B are hinged, and there is a limit hole 1 on the hinge plate of the auxiliary leg, and the limit hole 1 runs through the support plate of the auxiliary leg. Limit hole two corresponding to limit hole one.

The folding table with a folding frame includes the above-mentioned folding frame, the hinge plate 1 and the hinge plate 2 of the flap mechanism are provided with a flap panel, and the switch mechanism is provided with a switch panel corresponding to the hinge one.

Compared with prior art, the beneficial effect of the present invention is:

1. The present invention realizes the equal-height folding method and height-increasing folding method of the pressure-bearing frame by limiting the position of the hinge axis between the pressure-bearing frame A and the pressure-bearing frame B and the length relationship between the pressure-bearing frame and the leg frame;

2. By limiting the position of the hinge axis center of the pressure frame and the leg frame, the conflict between the leg frame and the upper surface of the pressure frame, and between the leg frame and the leg frame can be avoided in the contour folding mode and the height-increasing folding mode;

3. The frame body is equipped with a foldable leg frame, an auxiliary leg support frame that can be flipped and stored, and multiple sets of flap mechanisms, so that the present invention can achieve different heights and different lengths of the body through different folding methods, and has the advantages of Various unfolding forms, easy to use;

4. After the frame body of the present invention is folded in half, the volume is small, which is convenient for transportation and storage, and greatly satisfies the residents living in small-area houses.

Description of drawings

Fig. 1 is a schematic diagram of a fully expanded state of the frame body of Embodiment 2;

Fig. 2 is a schematic structural diagram of embodiment 2 with the auxiliary leg support frame deployed 270°;

Fig. 3 is a folded schematic diagram of the pressure frame B of Embodiment 2;

Fig. 4 is the expanded schematic diagram of the flap mechanism of embodiment two;

Fig. 5 is a top view of the leg frame of the third embodiment when it is stored;

Fig. 6 is a schematic diagram showing the development of the flap mechanism on both sides and the supporting frame with auxiliary legs in the third embodiment;

Fig. 7 is the structural representation of embodiment five;

Fig. 8 is the unfolded schematic diagram of the turnover mechanism of the fourth, fifth and sixth embodiments;

Fig. 9 is a schematic diagram of the expansion of the single-side flap mechanism in the second embodiment;

Fig. 10 is a schematic diagram of the folded storage of the second embodiment;

Figure 11 is a schematic structural view of Embodiment 4;

Figure 12 is a schematic structural view of Embodiment six;

Figure 13 is a schematic diagram of the split structure of the pressure frame A and the pressure frame B;

Figure 14 is a schematic diagram of the storage structure of the four-legged frame of the embodiment; it does not appear in the subsequent description, it is recommended to delete

Figure 15 is a schematic structural view of Embodiment 1;

Fig. 16 is a partially enlarged view of part M in Fig. 1;

Fig. 17 is a partially enlarged view of part N in Fig. 1;

Fig. 18 is a partially enlarged view of part V in Fig. 2;

Fig. 19 is a partially enlarged view of part P in Fig. 3;

Fig. 20 is a schematic diagram of the present invention.

In the figure, 1. Pressure-bearing frame A; 2. Hinge; 3. Pressure-bearing frame B; 12, the sole surface of the foot; 13, the outer surface; 14, the upper end surface; 21, the pull point plate; 22, the pull point axis A; 23, the pull plate; 24, the chute; 25, the pull point axis B; 26, the shaft plate; 27. Hinge shaft; 28. Gap; 31. Sliding slot; 40. Diagonal brace limit rod; 41. Diagonal brace; 42. Leg frame A; 43. Leg frame B; 44. Block; 45. Staggered legs and feet; 46. Foldable extension frame; 48. Hinge shaft A; 49. Hinge shaft B; 51. Hinge plate with auxiliary legs; 52. Support board with auxiliary legs; 53. Limit hole one; 54. Limit hole two; 55, attached leg patch; 61, hinge plate one; 62, folding connecting rod; 63, hinge plate two; 65, flap panel; 72, hinge one; 73, two-way hook; 75, switching panel; 81, Positioning plate; 82, positioning gap; 83, positioning protrusion.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

Embodiment 1: As shown in Figure 1 and Figure 15, a folding frame includes a frame body, the frame body includes a pressure-bearing frame A1 and a pressure-bearing frame B3 connected by a hinge 2 at one end, the pressure-bearing frame A1 and the pressure-bearing frame B3 The hinge shaft 27 of the hinge 2 can be relatively rotated 0°-180°, the other end of the pressure-bearing frame A1 is hinged with the leg frame A42 through the hinge shaft A48, and the other end of the pressure-bearing frame B3 is hinged with the leg frame B43 through the hinge shaft B49. The pressure frame A1 and the pressure frame B3 can rotate 0°-90° relative to the hinged leg frame A42 and leg frame B43 respectively; the length of the upper surface of the pressure frame A1 is greater than the length of the upper surface of the pressure frame B3; The pressure-bearing frame B3 is perpendicular to the connected leg frame A42 and leg frame B43 respectively, and the heights of the pressure-bearing frame A1 and the pressure-bearing frame B3 are consistent when they are unfolded to the level; the hinge shaft 27 is set on the pressure-bearing frame A1 and the pressure-bearing frame At the bottom of B3, the sum of the distance from the side end surface 11 of the end of the pressure frame B3 away from the hinge 2 to the center of the hinge axis 27 and the distance from the center of the hinge axis 27 to the upper surface of the pressure frame A1 is equal to the center of the hinge axis 49 to the pressure frame B3 The sum of the distance from the upper surface and the center of the hinge axis 49 to the sole surface 12 of the leg frame B43 is equal to the height of the frame body when fully expanded, and the distance from the center of the hinge axis 49 to the adjacent side end surface 11 is equal to the outer surface 13 of the leg frame B43 The distance is equal to the distance from it to the upper end face 14 of the leg frame B43. The distance from the hinge axis 48 to the proximal end surface 11 is greater than the distance to the outer surface 13 of the leg frame A42, and greater than the distance to the upper end surface 14 of the leg frame A42. When fully unfolded, the pressure-bearing frame B3 is folded down by 90°, and the pressure-bearing frame B3 is used as a new leg frame, and the upper surface of the pressure-bearing frame A1 can still be kept horizontal.

As shown in Figure 2, Figure 18 and Figure 10, the hinge 2 includes a pull point plate 21 and a shaft plate 26, the two sides of the pressure frame A1 are respectively provided with fixedly connected pull point plates 21, and the two sides of the pressure frame B3 are respectively provided with Fixedly connected shaft plate 26, pull point shaft A22 is provided at the bottom of pull point plate 21, pull point shaft B25 is provided at the bottom of shaft plate 26, pull plate 23 is arranged between pull point plate 21 and shaft plate 26, and one end of pull plate 23 It is hinged with the pull point shaft B25, the other end of the pull plate 23 is provided with a chute 24, the pull point shaft A22 moves in the chute 24, the shaft plate 26 is provided with a shaft hole, the shaft hole and the pull point shaft A22 are on the same horizontal line, The shaft hole is directly above the pulling point shaft B25, and a hinge shaft 27 is arranged in the shaft hole, and a shaft sleeve is arranged on the hinge shaft 27 to be fixed on the pressure-bearing frame B3; there is at least one pull plate 23 on the front and rear sides of the pressure-bearing frame A1 There is a notch 28 that matches the pull point axis A22, preferably the pull plate 23 on the front side of the pressure frame A1 is provided with a notch 28;

As shown in Figure 1, Figure 2 and Figure 3, a positioning mechanism 8 is provided at the hinge of the pressure frame A1 and the pressure frame B3, and the positioning mechanism 8 includes a positioning plate 81 and a positioning protrusion 83, and the positioning plate 81 and the pressure frame A1 The outer side is hinged, the positioning plate 81 is provided with a positioning notch 82, and the positioning protrusion 83 is installed on the outside of the pressure frame B3, and the positioning protrusion 83 cooperates with the positioning notch 82, so as to align the vertical pressure frame A1 and the pressure frame B3 perform support positioning;

As shown in Fig. 1, Fig. 16 and Fig. 19, the pressure-bearing frame A1 and the pressure-bearing frame B3 are provided with a switching mechanism 7 at the hinge, and the switching mechanism 7 includes a hinge 72 and a two-way hook 73 hinged to the bottom thereof. The center line of the hinge shaft of page one 72 coincides with the center line of hinge shaft 27; the hinges adjacent to hinge one 72 or the bottom of the hinge plate are respectively provided with positioning nails matched with two-way hook 73, and hinge one 72 is hinged on the bearing On the support plate of the press frame B3. The two-way hooks 73 on the sides of the pressure-bearing frame A1 and the pressure-bearing frame B3 are staggered up and down, and can be hooked to each other.

As shown in Figure 4, there are two groups of flap mechanisms 6 on the frame body. The flap mechanism 6 includes a hinge plate one 61 and a flap support assembly. The hinge plate one 61 is hinged on the support plate of the pressure frame B3, and the flap support assembly It includes two folding connecting rods 62 that can be self-locked at 180°, one end of the two folding connecting rods 62 is hinged, the other end of the lower folding connecting rod 62 is hinged with the frame body, and the other end of the upper folding connecting rod 62 is provided with a hinge plate 263. Wherein the hinge shaft of the hinge plate one 61 close to the hinge 2 coincides with the center line of the hinge axis 27, and the lower part of the hinge plate one 61 is provided with a positioning nail that cooperates with the two-way hook 73.

As shown in Figure 1, Figure 2 and Figure 4, the two sides of the pressure-bearing frame A1 and the pressure-bearing frame B3 are provided with an auxiliary leg support frame 5 that can be turned outward by 0°-270°, and the auxiliary leg support frame 5 includes an auxiliary leg hinge plate 51 and an auxiliary leg patch plate 55, an auxiliary leg support plate 52 can be fixed on the auxiliary leg hinge plate 51, and the auxiliary leg hinge plate 51 is connected with the pressure frame A1 and the pressure frame B3 respectively The two sides are hinged, and the auxiliary leg hinge plate 51 is provided with a limit hole 53, and the limit hole 53 runs through the auxiliary leg support plate 52, and the pressure frame A1 and the pressure frame B3 are provided with a limit hole 1 The second limit hole 54 corresponding to 53, when the auxiliary leg hinge plate 51 is attached to the outside of the pressure frame, the first limit hole 53 and the second limit hole 54 are fixed by bolts and nuts; the auxiliary leg patch 55 is respectively It is fixedly connected with the pressure frame A1 and the pressure frame B3.

As shown in Fig. 1 and Fig. 13, sliding grooves 31 are respectively provided on the inner side of the pressure-bearing frame A1 and the pressure-bearing frame B3, and one end of the slanted bracing plate 41 is hinged on the leg frame, and the other end slides in the sliding groove 31. When the frame is perpendicular to the hinged leg frame, the slant brace 41 reaches the end of the sliding groove 31, and the wings of the slant brace limit rod 40 fixed on the pressure-bearing frame A1 and pressure-bearing frame B3 fall into the slant brace 41 Corresponding notch, thereby preventing the diagonal bracing plate 41 from moving in the sliding groove 31 to complete the positioning.

This embodiment realizes the equal-height folding of the pressure-bearing frame B3, that is, the pressure-bearing frame B3 can be used as a leg frame after being folded at 90°, while the height of the pressure-bearing frame A1 remains unchanged, and the pressure-bearing frame A1 of this embodiment cannot be used as a leg frame use.

A folding table with a folding frame includes the above-mentioned folding frame, the hinge plate one 61 and the hinge plate two 63 of the flip mechanism 6 are provided with a flip panel 65, and the switching mechanism 7 is provided with a hinge corresponding to the hinge one 72. The toggle panel 75.

Embodiment two: as shown in Figure 1, the distance from the hinge axis 48 to the proximal end surface 11 is equal to the distance to the outer surface 13 of the leg frame A42, which is equal to the distance to the upper end surface 14 of the leg frame A42; others are the same as in the first embodiment same. In this embodiment, when the pressure-bearing frame A1 and the pressure-bearing frame B3 and their hinged leg frames are fully expanded, the pressure-bearing frame A1 can be folded downward by 90°, and the outer surface 13 of the leg frame B43 and the leg frame A42 The soles of the feet 12 are even, creating conditions for heightening and folding; the so-called heightening and folding means that the upper surface length of the pressure-bearing frame A1 is greater than the length of the upper surface of the pressure-bearing frame B3, and the pressure-bearing frame A1 and the pressure-bearing frame B3 and their connected legs When the frame is fully unfolded, the pressure-bearing frame A1 is folded downward by 90°, and the pressure-bearing frame B3 is kept horizontal after processing, and the height of this folding method increases.

A folding table with a folding frame includes the folding frame of the second embodiment, the hinge plate 1 61 and the hinge plate 2 63 of the flip mechanism 6 are provided with a flip panel 65, and the switching mechanism 7 is provided with a hinge 1 72 corresponds to the switching panel 75.

The present invention can carry out conversion under the folding state as follows:

In the position shown in Fig. 1, turn the brace limiter 40 so that the wings are separated from the corresponding notch of the brace 41, fold the leg frame A42 and leg frame B43 inward by 90°, and place the pressure frame A1 and the pressure frame The attached leg support frame 5 hinged by B3 rotates 270 °, so that the auxiliary leg support frame 5 is provided with the limit hole two 54 corresponding to the pressure frame A1 and the pressure frame B3 with the limit hole one 53, through the bolt and The nut fixes the first limiting hole 53 and the second limiting hole 54 to form a low frame as shown in Figure 2 .

In the state shown in Figure 1, the expansion angle of the pressure frame A1 and the pressure frame B3 is 180°, and the angles between the pressure frame A1, the pressure frame B3 and the hinged leg frame A42 and leg frame B43 are both 90°, which is fully extended state. At this time, the pull point axis A22 is located in the notch 28 of the pull plate 23 for positioning. Lift the pull plate 23 up to make the notch 28 on the chute 24 break away from the pull point axis A22, then turn the pressure-bearing frame B3 downwards so that the pressure-bearing frame B3 is perpendicular to the ground, and rotate the positioning plate 81 of the positioning mechanism 8 to make the positioning gap 82 Enter the positioning projection 83 to perform positioning; the switch panel 75 fixed by the hinge 72 on the side of the pressure frame B3 is turned 90°, and the two-way hook 73 hinged on the hinge 72 on the side of the pressure frame B3 is hooked The hinge shaft under the hinge-72 on the pressure-bearing frame A1 side, the two-way hook 73 under the hinge-72 on the pressure-bearing frame A1 side hooks the positioning nail at the bottom of the hinge plate-61 at one end of the hinge 2, thereby connecting to form a full desktop. Whether the angle between the leg frame B43 and the pressure frame B3 is 0° or 90°, the pressure frame A1 can be maintained at a stable level, as shown in FIG. 3 .

In the state shown in Figure 3, turn the two layers of flap panels 65 on one side of the pressure frame B3 upwards by 90°, so that the two connecting rods of the self-locking folding connecting rods 62 are in the self-locking position of 180°, thereby completing the flipping panels of each layer 65 support positioning; at this time, the two-way hook 73 can no longer hook the corresponding positioning nail; the auxiliary leg support frame 5 can rotate 90 °, to increase stability, as shown in Figure 4. In this state, each layer of turnover panels 65 can also be turned over independently.

In the state of Fig. 1, turn the slant brace limiter 40 to make its wing plate break away from the corresponding gap of the slant brace 41, and the slant brace 41 can move in the slide groove 31, so that the leg frame A42 and the leg frame B43 are folded by 90°; The notch 28 of the pull plate 23 on the front outer side of the pressure frame A1 is separated from the pull point axis A22, so that the pull point axis A22 can move in the chute 24, and the pressure frame A1 and the pressure frame B3 are folded 180° to form a completely folded state. As shown in Figure 10.

In the state shown in Figure 10, flip the flap panel 65 on the side of the pressure-bearing frame A1 so that the two folding connecting rods 62 are supported at 180° from the self-locking position, and the auxiliary leg support frame 5 is rotated 90° as a support; The switching panel 75 and the flap panel 65 on the side of the upper pressure frame A1 can be connected as a whole through the switching mechanism 7 on both sides to form the smallest desktop form on the upper layer, as shown in FIG. 9 . In this state, each layer of turnover panels 65 can also be turned over independently.

Embodiment 3: As shown in Figure 5 and Figure 14, the length of the upper surface of the pressure-bearing frame A1 is equal to that of the pressure-bearing frame B3. The inner side of the frame can be provided with staggered legs 45; the staggered legs 45 are used as a part of the leg frame B43 without changing the height of the original frame body; others are the same as in the second embodiment.

As shown in Figure 6, in the fully folded state of this embodiment, the supporting leg support frame 5 is rotated 90°, and the flap panels 65 on both sides are flipped 90° at the same time to form a desktop arranged in layers on both sides, wherein each flap Panels 65 are also individually deployable.

Embodiment 4: As shown in Figure 11, the length of the upper surface of the pressure-bearing frame A1 is greater than the length of the upper surface of the pressure-bearing frame B3, and the difference D between the upper surfaces of the pressure-bearing frame A1 and the pressure-bearing frame B3 is smaller than the thickness of the leg frame A42 d, the leg frame B43 is provided with staggered legs 45; the effective staggered length of the staggered legs 45 is the thickness d of the leg frame minus the above-mentioned length difference D; the others are the same as in the second embodiment. When the pressure-bearing frame A1 and the pressure-bearing frame B3 are respectively perpendicular to the hinged leg frame A42 and leg frame B43, the side end surface 11 on the pressure-bearing frame A1 is flush with the outer surface 13 of the leg frame A42, and the outer surface 13 of the leg frame B43 It is flush with the sole surface 12 of the leg frame A42.

In the fully expanded state, the angle between the pressure-bearing frame A1 and the pressure-bearing frame B3 is 180°, and the angle between the pressure-bearing frame A1 and the pressure-bearing frame B3 and the hinged leg frame A42 and leg frame B43 is 90°; as shown in Figure 11 As shown, the pressure-bearing frame A1 is rotated downward by 90°, so that the non-staggered part of the leg frame B43 "stands" on the horizontally placed leg frame A42, and the positioning plate 81 of the positioning mechanism 8 is rotated, so that the positioning gap 82 enters the positioning protrusion 83 , so as to perform positioning; turn the switching panel 75 on the side of the pressure frame A1 by 90°, and connect the switching panel 75 and the flap panel 65 on the side of the pressure frame B3 as a whole.

In the state shown in Figure 11, the flap panel 65 hinged by the pressure frame A1 can be turned over to 90° and positioned, and at the same time the auxiliary leg support frame 5 hinged by the pressure frame A1 is rotated 90° to form a desktop as shown in Figure 8 form;

Embodiment 5: The upper surface length of the pressure-bearing frame A1 is greater than the upper surface length of the pressure-bearing frame B3, and the difference D between the upper surface lengths of the pressure-bearing frame A1 and the pressure-bearing frame B3 is greater than the thickness d of the leg frame A42 and smaller than that of the frame body. Thickness d1; on the side of leg frame A42 opposite to leg frame B43, spacer 44 is provided, and the thickness of spacer 44 is equal to the thickness d of described upper surface length difference D minus leg frame A42; Other is identical with embodiment two .

In the fully expanded state in Figure 1, the angle between the pressure frame A1 and the pressure frame B3 is 180°, and the angle between the pressure frame A1 and the pressure frame B3 and the hinged leg frame A42 and leg frame B43 is 90°; as shown in the figure As shown in 7, the pressure frame A1 rotates downward by 90°, so that the leg frame B43 "stands" on the pad 44 of the leg frame A42 placed horizontally, and the positioning plate 81 of the positioning mechanism 8 is rotated, so that the positioning gap 82 enters the positioning protrusion Lift 83 for positioning; turn the switch panel 75 on the side of the pressure frame A1 by 90°, and connect the switch panel 75 and the flap panel 65 on the side of the pressure frame B3 as a whole.

In the state shown in Figure 7, the flap panel 65 hinged by the pressure frame A1 can be turned over to 90° and positioned, and at the same time the auxiliary leg support frame 5 hinged by the pressure frame A1 is rotated 90° to form a desktop as shown in Figure 8 form.

Embodiment 6: The length of the upper surface of the pressure-bearing frame A1 is greater than the length of the upper surface of the pressure-bearing frame B3, and the difference D between the upper surfaces of the pressure-bearing frame A1 and the pressure-bearing frame B3 is greater than the thickness d1 of the frame body; the leg frame A42 is provided with There is a foldable extension frame 46; others are identical with embodiment two.

As shown in Figure 12, the foldable extension frame 46 is hinged to the legs and feet of the leg frame A42, and has a U-shaped section. When the angle between it and the leg frame A42 is 0°, the U-shaped inner wall is attached to the surface of the leg frame A42. Its whole is no more than the sole surface 12 of leg frame A42, and when it was perpendicular to leg frame A42, its U-shaped inwall can be attached on the leg frame B43 lateral surface 13, and the foldable extension frame 46 and leg frame B43 are respectively provided with The corresponding positioning holes can be positioned when the bolts are inserted into the positioning holes.

In the fully expanded state, the angle between the pressure-bearing frame A1 and the pressure-bearing frame B3 is 180°, and the angle between the pressure-bearing frame A1 and the pressure-bearing frame B3 and the hinged leg frame A42 and leg frame B43 is 90°; as shown in Figure 12 As shown, the pressure frame A1 is rotated downward by 90°, the foldable extension frame 46 is unfolded and attached to the surface of the leg frame B43, and the bolts are inserted into the corresponding positioning holes, so that the leg frame B43 can stand through the foldable extension frame 46 " ” on the horizontally positioned leg frame A42.

In the state shown in Figure 12, the flap panel 65 hinged by the pressure frame A1 can be turned over to 90° and positioned, and at the same time the auxiliary leg support frame 5 hinged by the pressure frame A1 is rotated 90° to form a desktop as shown in Figure 8 form.

The center selection principle of hinge axis B49 in the present invention is:

Folding at the same height in a fully unfolded state is essentially to keep the height of the hinge shaft 27 unchanged before and after folding, and the length of the upper surface of the pressure frame B3 is equal to the center height of the hinge shaft 27, theoretically the center of the hinge shaft B49 is to the bottom surface of the leg frame B43 The distance of 12 is equal to the center height of the hinge axis 27, and the center of the hinge axis B49 is optimal at the intersection point of the end surface 11 and the lower surface of the pressure-bearing frame B3, but in practice the hinge 2 has a certain volume, and the center of the hinge axis B49 must be at the bearing Between the side end surface 11 of the pressure frame B3 and the hinge shaft 27 . The plane that passes through the center of the hinge shaft 27 and is perpendicular to the upper surface of the pressure frame B3 is called the central end face. When the leg frame B43 is stored, the leg frame B43 must exceed the central end face. Conflict between upper surface of pressure frame, leg frame and leg frame.

The analysis is as follows: As shown in Figure 20, in the fully unfolded state, the vertical distance between the center of the hinge axis B49 and the center of the hinge axis 27 is R1, and the vertical distance between the center of the hinge axis 27 and the sole surface 12 of the leg frame B43 is L1; The horizontal distance between the outer surface 13 of B43 and the center of the hinge axis B49 is R2, and the horizontal distance between the outer surface 13 of the leg frame B43 and the center of the hinge axis 27 is L2; The horizontal distance h1=L2-R2 of the center; the distance h2=L1+R1 from the center of the hinge axis B49 to the sole surface 12, during storage, the distance of the leg frame B43 beyond the central end face is: h2-h1=L1+R1-(L2- R2)=R1+R2, therefore, the smaller the value of R1+R2, the smaller the value of the leg frame B43 beyond the central end surface, that is, the bushing of the hinge shaft B49 and the side end surface 11 of the pressure frame B3 and the lower surface of the pressure frame B3 respectively When tangent, the length of the leg frame B43 beyond the central end surface is the smallest. Similarly, for example, the value of the leg frame A42 protruding from the central end surface of the pressure-bearing frame A1 is also related to the size of R1+R2.

In the present invention, at the hinge 2, the pressure frame leaves a space where the opposite leg frame exceeds the central end surface, and there is also a space between the folded leg frame and the upper surface of the pressure frame on the same side, so that the leg frame B43 does not interfere with the pressure frame There are two conditions for the upper surface of A1: ①. The requirements for not touching the upper surface of the pressure frame A1 when the leg frame B43 is folded are: the distance from the center of the hinge axis 27 to the center of the hinge axis 49 and the distance from the center of the hinge axis 27 to the pressure frame A1 The sum of the surface distances is greater than the distance from the center of the hinge axis 49 to the farthest point on the sole surface 12 of the leg frame B43; The requirements for conflicting with the upper surface of the pressure frame A1 are: the length of the leg frame B43 beyond the central end surface must be within a circular arc centered on the hinge axis 27 and the distance h from the center to the upper surface of the pressure frame A1 as the radius, as Part of the sole surface 12 can be cut off beyond the arc surface; since the scope of the condition ② is smaller than that of the requirement ①, the condition ② is taken as the condition that must be met. In the equal-height folding, if there is any conflict between the leg frame A42 and the leg frame B43, they can be arranged in dislocations, as long as each of them satisfies the condition ②.

In the height-increasing folding of the fourth embodiment, since the effective staggered length of the leg frame B43 is limited, there is no greater freedom as in the contour folding. When the leg frame A42 and the leg frame B43 are folded, the non-staggered parts may conflict. For preventing the appearance of this situation, in addition to satisfying condition 2. also will satisfy following requirement: 3. the distance from the center of hinge axis A48 to the sole surface 12 of leg frame A42 is farthest from the center of hinge axis B49 to the bottom surface 12 of leg frame B43. The sum of the distances of the far points minus the effective staggered length is less than the distance from the center of the hinge axis A48 to the center of the hinge axis B49 when the pressure-bearing frame A1 and the pressure-bearing frame B3 are at the 180° position. Suppose the difference between the distance from the hinge axis B49 center to the farthest point of the leg frame B43 sole surface 12 and the distance to the leg frame B43 sole surface 12 is Δ1, and the distance from the A48 center to the leg frame A42's sole surface 12 farthest point is the same as the distance to the leg frame A42. The difference between the distances between the feet 12 of frame A42 is Δ2, and the effective staggered length is E. Add A in front of the symbols used in the analysis on the pressure-bearing frame B3 side and use them directly at the same position on the pressure-bearing frame A1 side, then the following equation is established h1=L2 -R2, h2=L1+R1, L1=L2, Ah1=AL2-AR2, Ah2=L1+AR1, AL2=L2+D, E=d-D, the above condition ③ is expressed as: (h2+Δ2+Ah2+Δ1- E)<(h1+Ah1), the equations are substituted into and simplified as: (R1+R2+Δ1+AR1+AR2+Δ2)<d, that is, the sum of R1, R2, Δ1, AR1, AR2 and Δ2 shall not exceed the The thickness of the frame A42.

In the height-increasing folding of Embodiments 5 and 6, because the level of the pressure-bearing frame B3 must be maintained, the leg frame B43 stands on the leg frame A42 through the spacer 44 or the extension frame 46, and the dimensions of the three have matching requirements, except that the condition ② is met In addition, the following requirements must be met: ④ The sum of the distance from the center of the hinge axis A48 to the farthest point on the sole surface 12 of the leg frame A42 and the distance from the center of the hinge axis B49 to the farthest point on the sole surface 12 of the leg frame B43 is less than the pressure-bearing frame A1 The distance from the center of the hinge axis A48 to the center of the hinge axis B49 when the pressure frame B3 is at a position of 180°. Suppose the difference between the distance from the center of the hinge axis B49 to the farthest point on the sole surface 12 of the leg frame B43 and the vertical distance to the bottom surface of the leg frame B43 is Δ1, the distance from the center of the hinge axis A48 to the farthest point on the sole surface 12 of the leg frame A42 is The difference in the vertical distance to the sole surface 12 of the leg frame A42 is Δ2. Taking the pressure-bearing frame B3 side as an example, the above symbols are still used on the pressure-bearing frame A1 side, and A is added in front to distinguish, then the following equations hold: h1=L2-R2, h2=L1+R1, L1=L2, Ah1 ＝AL2-AR2, Ah2＝L1+AR1, AL2＝L2+D, D is the length difference between the upper surface of pressure frame A1 and pressure frame B3, the above condition ④ is expressed as: (h2+Δ2+Ah2+Δ1)< (h1+Ah1), the equations are substituted into and simplified as: (R1+R2+Δ1+AR1+AR2+Δ2)<D, that is, the sum of R1, R2, Δ1, AR1, AR2 and Δ2 shall not exceed the pressure frame A1 The length difference D with the upper surface of the pressure frame B3.

Based on the above analysis, it is very important to reasonably select the center positions of the hinge axis 48 and the hinge axis 49. In addition, measures such as staggered arrangement of the leg frames or removal of conflicting parts can effectively avoid the conflict between the leg frame and the frame, and between the leg frame and the leg frame.

Claims (14)

1. a kind of folded frame, including frame body, pressure-bearing frame A (1) that frame body, which includes one end, to be connected by hinge (2) and Pressure-bearing frame B (3), pressure-bearing frame A (1) and pressure-bearing frame B (3) can relatively rotate 0 ° -180 ° by the hinge axis (27) of hinge (2), hold Hingedly by hinge axis A (48) and leg support A (42), pressure-bearing frame B (3) other end passes through hinge axis B to the other end of press box A (1) (49) hingedly with leg support B (43), pressure-bearing frame A (1) and pressure-bearing frame B (3) respectively with hinged leg support A (42) and leg support B (43) 0 ° -90 ° can be relatively rotated；Pressure-bearing frame A (1) upper surface length is greater than or equal to pressure-bearing frame B (3) upper surface length；In pressure-bearing frame A (1) and pressure-bearing frame B (3) respectively with its hinged leg support A (42) and vertical leg support B (43) when, pressure-bearing frame A (1) and pressure-bearing frame B (3) height after being expanded to level is consistent；It is characterized in that：The hinge axis (27) is arranged in pressure-bearing frame A (1) and pressure-bearing frame B (3) bottom, the distance H1 at side end face (11) to hinge axis (27) center of one end on pressure-bearing frame B (3) far from hinge (2) with Hinge axis (27) center is equal on (49) center hinge axis B to pressure-bearing frame B (3) to the sum of the distance h of pressure-bearing frame A (1) upper surface Surface distance and sum of the distance of (49) center hinge axis B to leg support B (43) foot plate surface (12), (49) center hinge axis B to phase The distance of proximal end face (11) is greater than or equal to it to the distance of leg support B (43) lateral surface (13), is greater than or equal to it to leg support The distance of B (43) upper surface (14).

2. folded frame according to claim 1, it is characterised in that：(49) center hinge axis B is to phase proximal end face (11) distance is equal to its distance to leg support B (43) lateral surface (13), be equal to its to leg support B (43) upper surface (14) away from From.

3. folded frame according to claim 2, it is characterised in that：(48) center hinge axis A is to phase proximal end face (11) distance is equal to its distance to leg support A (42) lateral surface (13), be equal to its to leg support A (42) upper surface (14) away from From.

4. folded frame according to claim 3, it is characterised in that：The pressure-bearing frame A (1) and pressure-bearing frame B (3) upper surface The side of equal length, leg support B (43) or leg support A (42) are equipped with staggeredly legs and feet (45).

5. folded frame according to claim 3, it is characterised in that：Pressure-bearing frame A (1) the upper surface length is greater than pressure-bearing Frame B (3) upper surface length, and the upper surface length difference D of pressure-bearing frame A (1) and pressure-bearing frame B (3) is less than the thickness d of leg support A (42)； Leg support B (43) is equipped with staggeredly legs and feet (45), the thickness d and the upper surface length difference D that length is leg support A (42) of effectively interlocking Difference.

6. folded frame according to claim 3, it is characterised in that：Pressure-bearing frame A (1) the upper surface length is greater than pressure-bearing Frame B (3) upper surface length, and the upper surface length difference D of pressure-bearing frame A (1) and pressure-bearing frame B (3) is greater than the thickness d of leg support A (42) And it is less than the thickness d 1 of frame body；The side opposite with leg support B (43) is equipped with cushion block (44) on leg support A (42), cushion block (44) thickness is equal to the difference of the upper surface length difference D and leg support A (42) thickness d.

7. folded frame according to claim 3, it is characterised in that：Pressure-bearing frame A (1) the upper surface length is greater than pressure-bearing Frame B (3) upper surface length, and the upper surface length difference D of pressure-bearing frame A (1) and pressure-bearing frame B (3) is greater than the thickness d 1 of frame body； Leg support A (42) is equipped with folding lengthening frame (46).

8. folded frame according to any one of claim 1 to 7, it is characterised in that：The pressure-bearing frame A (1) and pressure-bearing The hinged place of frame B (3) is equipped with positioning mechanism (8), and the positioning mechanism (8) includes positioning plate (81) and positioning protrusion (83), determines Position plate (81) and the outside pressure-bearing frame A (1) are hinged, and positioning protrusion (83) is installed on the outside of pressure-bearing frame B (3), and positioning plate is set on (81) Have locating notch (82), positioning protrusion (83) is matched with locating notch (82).

9. folded frame according to any one of claim 1 to 7, it is characterised in that：The pressure-bearing frame A (1) and pressure-bearing Switching mechanism (7) are equipped between frame B (3), the switching mechanism (7) includes hinge one (72), and hinge one (72) bottom is hinged with Bidirectional hook (73), the articulated shaft of hinge one (72) and hinge axis (27) same to center.

10. folded frame according to any one of claim 1 to 7, it is characterised in that：The frame body is equipped with one Panel turnover mechanism (6) more than group, the panel turnover mechanism (6) include flap one (61) and turnover panel support component, the turnover panel branch Support component includes that can fold connecting rod (62) one end in 180 ° of self-locking folding connecting rods (62) and frame body is hinged, fold Connecting rod (62) other end is equipped with flap two (63)；Flap one (61) and frame body are hinged, the hinge close to hinge (2) The articulated shaft of plate one (61) is overlapped with hinge axis (27) center line, and its bottom is equipped with the positioning cooperated with bidirectional hook (73) Nail.

11. folded frame according to claim 10, it is characterised in that：The frame body both ends help leg to support equipped with attached Frame (5), it is attached help leg support (5) include it is attached help leg articulated slab (51), it is attached help on leg articulated slab (51) to be fixed with attached leg is helped to support Plate (52), it is attached to help leg articulated slab (51) hinged with the two sides of pressure-bearing frame A (1) and pressure-bearing frame B (3) respectively.

12. a kind of folding table with folded frame, it is characterised in that：Including folded frame described in the claims 8, institute It states and is respectively equipped with panel on pressure-bearing frame A (1) and pressure-bearing frame B (3).

13. a kind of folding table with folded frame, it is characterised in that：Including folded frame described in the claims 9, institute It states and is respectively equipped with panel on pressure-bearing frame A (1) and pressure-bearing frame B (3), switching mechanism (7) is equipped with corresponding with hinge one (72) Switch panel (75).

14. a kind of folding table with folded frame, it is characterised in that：It is described including the folded frame described in claim 11 The flap one (61) and flap two (63) of panel turnover mechanism (6) are equipped with turnover panel panel (65).