TWI680815B - Tube bending tool and method of use - Google Patents

Abstract

A tube bending tool is provided, including: a main body, having a center portion and a guiding face, the center portion defining a center axial line, the guiding face extending around the center axial line; a ratchet device, swayably assembled to the center portion of the main body, the ratchet device including a grip portion; a pressing mechanism, connected with the ratchet device and being movable around the center axial line, the pressing mechanism having a pressing portion facing to the guiding face; a handle portion, connected with the main body, the grip portion being swayable relatively to the handle portion. A method of using the tube bending tool above is further provided.

Description

Pipe bending device and method of use

The invention relates to a bendable pipe bending device and a method for using the same.

In construction, it is often necessary to use a pipe bending device to bend the pipe fittings, such as bending the cold air piping device and the piping device of the refrigerator. The pipe bending device of the prior art includes a pipe placement base and a pipe pressing mechanism pivotally connected to the pipe placement base, the pipe placement base is provided with a circumferentially extending pipe bending groove and a handle, and the pipe pressing mechanism is provided with a pressure pipe Part, a grip integrally formed on the pressure tube part and a connecting segment, one end of the connection segment is pivotally connected to the pressure tube part and the tube placement seat, the pressure tube part and the grip are located in a first direction and facing The first direction extends, the tube placement seat can place a tube, and the grip swings relative to the handle along the tube bending groove to move the pressure tube portion along the tube bending groove to bend the tube.

However, the grip of the conventional technology needs to swing relative to the handle along the elbow groove, that is, when the pipe is placed horizontally on the elbow groove before being bent, the grip must swing to the pipe The tip of the handle causes the angle between the handle and the grip to be too large, resulting in an operation range that is too large to operate in a narrow space; in addition, swinging the pipe will directly drive the pressure tube part and cause the pressure tube part to bend the pipe It cannot be pressed against the pipe stably.

Therefore, it is necessary to provide a novel and progressive pipe bending device and its use method to solve the above-mentioned problems.

The main purpose of the present invention is to provide a pipe bending device and a method for using it, which is conducive to operation in a narrow space.

To achieve the above object, the present invention provides a pipe bending device, including: a body provided with a center portion and a guide surface, the center portion defines a center axis, the guide surface extends around the center axis; a ratchet device , Which is swingably arranged at the central portion of the body, including a grip portion; a pressing mechanism connected to the ratchet device and movable around the central axis, the pressing mechanism is provided with a face facing the guide surface A pressing portion; a handle portion connected to the body, the grip portion can swing relative to the handle portion; wherein, the ratchet device and the pressing mechanism are respectively provided on opposite sides of the body.

In order to achieve the above object, the present invention also provides a method for using a pipe bending device, which includes the following steps: providing a pipe piece, the pipe piece being placed on the guiding surface; clamping the pipe piece on the pressing mechanism and the guide Between the surfaces; the ratchet device swings relative to the shank in a first direction with the center axis as the swing center to synchronously drive the pressing mechanism to move around the center axis and press against the pipe; the ratchet device is centered The axis is the swing center swinging in a second direction relative to the handle to a predetermined position, and the ratchet device swings relative to the pressing mechanism in a different motion.

1‧‧‧Bend device

322‧‧‧Pressure Department

10‧‧‧Body

321‧‧‧Face

11‧‧‧ Center

33‧‧‧Rolled parts

12‧‧‧Guiding surface

34‧‧‧Non-round hole

13‧‧‧Through hole

36‧‧‧ Wall Department

20‧‧‧ratchet device

37‧‧‧Connector

21‧‧‧ Grip

40‧‧‧handle

22‧‧‧Drive Department

50‧‧‧tangential piece

221‧‧‧Shaft

70‧‧‧buckle

222‧‧‧Arc groove

71‧‧‧Groove

223‧‧‧Non-circular joint

72‧‧‧Curved section

23‧‧‧ Ratchet

73‧‧‧ Inclined section

24‧‧‧ring tooth

80‧‧‧bolt

25‧‧‧Head

90‧‧‧gasket

251‧‧‧Neck

2‧‧‧First direction

26‧‧‧Card ejection mechanism

3‧‧‧Second direction

27‧‧‧groove

4‧‧‧ pivot axis

28‧‧‧Perforation

5‧‧‧ boundary

29‧‧‧Catch block

6‧‧‧ First Radial

30‧‧‧Pressure mechanism

7‧‧‧Pipe fittings

31‧‧‧ Connection section

L1‧‧‧Central axis

32‧‧‧Pressure section

Steps S1 to S4‧‧‧

FIG. 1 is a perspective view of a preferred embodiment of the present invention.

FIG. 2 is an exploded view of a preferred embodiment of the invention.

3 to 6 are usage diagrams of a preferred embodiment of the present invention.

5A is a partial cross-sectional view of FIG. 5.

7 is a partial cross-sectional view of a preferred embodiment of the present invention.

FIG. 8 is a schematic diagram of operation in a narrow space according to a preferred embodiment of the present invention.

FIG. 9 is a flow chart of use steps of a preferred embodiment of the present invention.

The following merely illustrates the possible implementation forms of the present invention with examples, but it is not intended to limit the scope of the invention to be protected, and will be described first.

Please refer to FIGS. 1 to 8, which show a preferred embodiment of the present invention. The pipe bending device 1 of the present invention includes a body 10, a ratchet device 20, a pressing mechanism 30 and a handle 40.

The body 10 is provided with a central portion 11 and a guide surface 12, the central portion 11 defines a central axis L1, the guide surface 12 extends around the central axis L1; the ratchet device 20 is swingably disposed on the body 10 The central portion 11, the ratchet device 20 includes a grip portion 21; the pressing mechanism 30 is connected to the ratchet device 20 and is movable around the central axis L1, the pressing mechanism 30 is provided with a surface facing the guide surface 12 The pressing portion 322; the handle portion 40 is connected to the body 10, the grip portion 21 can swing relative to the handle portion 40, so that the overall size can be reduced, and the ratchet device 20 can swing back and forth to resist the pressure The mechanism 30 moves simultaneously or differently to bend a pipe member 7 so as to reduce the operation range and facilitate the operation of the bent pipe in a narrow space. In this embodiment, the ratchet device 20 is a ratchet wrench; the ratchet device 20 and the pressing mechanism 30 are respectively disposed on two opposite sides of the body 10.

It is worth mentioning that the pressing mechanism 30 includes a connecting section 31, a pressing section 32, at least one rolling member 33 rotatably disposed on the pressing section 32, the connecting section 31 is connected to the ratchet device 20 And the pressing section 32, the pressing section 32 can swing relative to the connecting section 31 with a pivot axis 4 as a center, in detail, the pressing section 32 and the connecting section 31 extend axially along the pivot axis 4 The shafts are pivotally connected, and the pivot axis 4 passes through the In the center of the shaft, the pivot axis 4 passes through the pressing section 32 and the connecting section 31, viewed in the extending direction of the central axis L1 (see FIG. 3), the pressing section 32 defines a passage through the pressing section 32 A boundary line 5 adjacent to an end surface 321 of the connecting section 31 passes through the body 10, the center axis L1 and the center of the at least one rolling member 33 are on a first radial direction 6, the pivot The axis 4 is located on a side of the first radial direction 6 that is opposite to the boundary line 5, so that the pressing mechanism 30 can stably press against the pipe member 7 without easily deflecting away from the pipe member 7. In addition, the number of the at least one rolling element 33 is a plural number, and the plural rolling elements 33 collectively constitute the pressing portion 322. In addition, the pressing section 32 further includes two opposite wall portions 36, the at least one rolling member 33 is disposed between the two wall portions 36, and a connecting member 37 is penetrated to connect the two wall portions 36, Improve the strength of the structure.

In detail, the ratchet device 20 includes a driving portion 22 that is coaxially and rotatably provided at the central portion 11 of the body 10, and the pressing mechanism 30 is connected to the driving portion 22; in this embodiment The ratchet device 20 further includes a ratchet tooth 23 and a ring tooth part 24, the ratchet tooth 23 releasably engages the ring tooth part 24, one of the ratchet tooth 23 and the ring tooth part 24 can link the driving part 22, when the ratchet device 20 swings in a first direction 2 about the central axis L1, the ratchet teeth 23 mesh with the ring tooth portion 24 and move simultaneously; the ratchet device 20 swings in a second direction 3 about the central axis L1 At this time, the ratchet teeth 23 jump teeth relative to the ring tooth portion 24, the first direction 2 is opposite to the second direction 3, and the whole has a small size to reduce the operating range, which can be reversed in other embodiments; in this embodiment The first direction 2 is a clockwise direction, and the second direction 3 is a counterclockwise direction. In addition, the central portion 11 of the body 10 is provided with a through hole 13, and the driving portion 22 is detachably passed through the through hole 13 for easy storage.

The ratchet device 20 is provided with a perforation 28 and the ring tooth portion 24 surrounding the perforation 28. The driving portion 22 further includes a shaft section 221 penetrating the perforation 28. The shaft section 221 is provided with an arc groove 222. The ratchet device 20 further includes an directional member 50 and a latching block 29 that springs against the arc groove 222 and the ratchet teeth 23, the tangential member 50 connects the latching block 29 and drives the latching block 29 Swing around the central axis L1, can be clockwise and counterclockwise The tangential member 50 is controlled by needle cutting to change the direction in which the latching block 29 bites the ring tooth portion 24 to adjust the direction of unidirectional rotation for biting and fixing, and reverse idle gear jumping.

The ratchet device 20 further includes a head 25 and a snap mechanism 26, the grip 21 is provided with a groove 27, the head 25 is provided with a neck section 251 which is swingably positioned and inserted into the groove 27, the The driving part 22 is disposed on the head 25, and the elastic clamping mechanism 26 springs against the neck section 251 and the groove 27. In this embodiment, the neck section 251 has arc convex tooth rows, and the elastic clamping mechanism 26 It can be snapped on the positioning of the arc convex tooth row and adjust the angle of the jumping tooth to facilitate swinging along the central axis L1.

One of the driving part 22 and the pressing mechanism 30 is provided with a non-circular joint, and the other is provided with a non-circular hole that can be interlocked with the non-circular joint. The non-circular joint can be directly detachably inserted In the present embodiment, the driving portion 22 is provided with the non-circular joint 223, the pressing mechanism 30 is provided with the non-circular hole 34, and the driving portion 22 can be directly engaged and synchronously drive the resisting The pressing mechanism 30 achieves quick snapping and disassembly in this way; the non-circular joint 223 does not protrude from the non-circular hole 34, wherein the non-circular hole 34 may be a blind hole or a through hole, in this embodiment the non-circular hole 34 It is a through hole, so that the driving portion 22 can be inserted toward different sides of the pressing mechanism 30; preferably, the non-circular joint 223 is polygonal; the non-circular hole 34 is polygonal. In this embodiment, the non-circular hole 34 is polygonal The shape of the circular joint 223 may correspond to the shape of the non-circular hole 34, both of which are quadrangular; in other embodiments, the shape of the non-circular hole may not correspond to the shape of the non-circular joint, for example, the non-circular hole is In a hexagon, the non-circular joint is triangular, so that the non-circular joint can be inserted into the non-circular hole at different angles. In addition, a plug can be inserted and connected to the driving part and the pressing mechanism to securely connect the two.

The handle 40 is detachably provided on the body 10. Preferably, the handle 40 and the ratchet device 20 are disposed on opposite sides of the body 10 in the direction in which the central axis L1 extends, so as to reduce the overall size.

The pipe bending device 1 further includes a buckle member 70, the buckle member 70 is swingably locked to the body 10 with a bolt 80, and a washer 90 is provided between the bolt 80 and the body 10 to make the The bolt 80 can be locked to the buckle bar member 70 and can be smoothly swung by the buckle bar member 70; in detail, the buckle bar member 70 further includes a buckle groove 71, and the buckle groove 71 includes an arc bend section 72 And an inclined section 73 transverse to the arc-bending section 72. The inclined section 73 is transverse to the central axis L1 for the buckle groove 71 to fasten the pipe member 7 inward.

Please refer to FIG. 9, which is the aforementioned method of using the pipe bending device 1, which includes the following steps: Step S1, providing the pipe member 7, the pipe member 7 is placed on the guide surface 12; Step S2, clamping the pipe member 7 between the pressing mechanism 30 and the guide surface 12; Step S3, the ratchet device 20 swings relative to the handle 40 toward the first direction 2 with the center axis L1 as the swing center to synchronously drive the resist The pressing mechanism 30 movably presses against the pipe member 7 about the central axis L1; step S4, the ratchet device 20 swings to a predetermined position relative to the handle 40 toward the second direction 3 with the central axis L1 as the swing center, the The ratchet device 20 swings relative to the pressing mechanism 30 differently, that is, the ratchet device 20 rotates to the predetermined position without driving the pressing mechanism 30 so that the ratchet device 20 can reciprocate relative to the handle 40 During operation, the ratchet device 20 is used to drive the pressing mechanism 30 to swing or not to swing the pressing mechanism 30 to bend the tube 7, so that the operation range can be narrowed, which facilitates operation and use in a narrow space. To further explain, step S3 and step S4 can be repeatedly operated between the first direction 2 and the second direction 3 to bend the tube 7, and the two do not limit the order. It is worth mentioning that in a step before step S1, the driving part 22 is detachably directly connected to the pressing mechanism 30.

1‧‧‧Bend device

10‧‧‧Body

20‧‧‧ratchet device

30‧‧‧Pressure mechanism

40‧‧‧handle

70‧‧‧buckle

Claims (10)

A pipe bending device includes: a body provided with a central portion and a guiding surface, the central portion defines a central axis, the guiding surface extends around the central axis; a ratchet device is swingably provided on the body The central portion includes a grip portion; a pressing mechanism connected to the ratchet device and movable around the central axis; the pressing mechanism is provided with a pressing portion facing the guide surface; a handle portion is connected to The body, the grip portion can swing relative to the handle portion; wherein, the ratchet device and the pressing mechanism are respectively provided on opposite sides of the body. The pipe bending device according to claim 1, wherein the ratchet device includes a driving portion, the driving portion is coaxially and rotatably provided at the central portion of the body, and the pressing mechanism is connected to the driving portion. The pipe bending device according to claim 2, wherein the ratchet device further includes a ratchet tooth and a ring tooth portion, the ratchet tooth releasably engages the ring tooth portion, and one of the ratchet tooth and the ring tooth portion may In conjunction with the driving part, when the ratchet device swings around the central axis in a first direction, the ratchet teeth mesh with the ring tooth part and move simultaneously; when the ratchet device swings around the central axis in a second direction, the ratchet teeth The first direction is opposite to the second direction with respect to the ring teeth jumping tooth. The pipe bending device according to claim 2, wherein one of the driving part and the pressing mechanism is provided with a non-circular joint, and the other is provided with a non-circular hole that can be engaged with the non-circular joint, The non-circular joint can be directly detachably inserted into the non-circular hole. The pipe bending device according to claim 4, wherein the driving portion is provided with the non-circular joint, the pressing mechanism is provided with the non-circular hole, and the non-circular joint does not protrude from the non-circular hole. The pipe bending device according to claim 1, wherein the handle is detachably provided on the body. The pipe bending device according to claim 1, wherein the handle and the ratchet device are disposed on opposite sides of the body toward the direction in which the central axis extends. The pipe bending device according to any one of claims 1 to 7, wherein the pressing mechanism includes a connecting section, a pressing section, and at least one rolling member rotatably provided on the pressing section, the connection The segment connects the ratchet device and the pressing section. The pressing section can swing relative to the connecting section about a pivot axis. The pivot axis passes through the pressing section and the connecting section, as viewed in the direction of extension of the central axis , The pressing section defines a boundary line passing through the pressing section adjacent to an end surface of the connecting section, the boundary line passing through the body, the center axis and the center of the at least one rolling element are in a first radial direction, the The pivot axis is on a side opposite to the boundary line in a first direction. The pipe bending device according to claim 3, wherein the central portion of the body is provided with a through hole, and the driving portion is detachably passed through the through hole; one of the driving portion and the pressing mechanism is provided with a non-circular Shaped connector, the other is provided with a non-circular hole that can be engaged with the non-circular connector; the driving part is provided with the non-circular connector, the pressing mechanism is provided with the non-circular hole, the non-circular connector is not convex The non-circular hole; the non-circular joint is polygonal; the non-circular hole is polygonal; the handle is detachably provided on the body; the handle and the ratchet device are provided in the direction of the central axis Opposite sides of the body; the pressing mechanism includes a connecting section, a pressing section, at least one rolling member rotatably disposed on the pressing section, the connecting section connects the ratchet device and the pressing section, the The pressing section can swing relative to the connecting section with a pivot axis as a center, the pivot axis passing through the pressing section and the connecting section, viewed in the extending direction of the central axis, the pressing section defines a neighboring section through the pressing section A boundary line at an end surface of the connecting section, the boundary line passing through the body, the center axis and the center of the at least one rolling element are in a first radial direction, the pivot axis is located in the first radial direction opposite to the boundary One side of the wire; the ratchet device further includes a head and a snap mechanism, the grip portion is provided with a groove, the head is provided with a neck portion which can be swingably positioned and inserted in the groove, the The driving part is arranged at the head, and the elastic clamping mechanism springs against the neck section and the groove; the pipe bending device further includes a buckle member, and the buckle member is swingably locked to the bolt with a bolt The body is provided with a gasket between the bolt and the body; the buckle member further includes a buckle groove, the buckle groove includes an arc bending section and an inclined section transverse to the arc bending section, the inclined section is transverse to the The central axis; the ratchet device is provided with a perforation and the ring tooth portion surrounding the perforation, the driving part further includes a shaft section penetrating the perforation, the shaft section is provided with an arc groove, and the ratchet device further includes everything A directional member and a latch block that springs against the arc groove and the ratchet teeth, the tangential member connects the latch block and drives the latch block to deflect around the central axis. A method for using a pipe bending device according to any one of claims 1 to 7 includes the following steps: providing a pipe piece, the pipe piece being placed on the guide surface; clamping the pipe piece against the pressure mechanism and Between the guide surfaces; the ratchet device swings relative to the shank in a first direction with the center axis as the swing center, to synchronously drive the pressing mechanism to move against the tube around the center axis; and press the ratchet device With the center axis as the swing center, the ratchet device swings relative to the handle to a predetermined position in a second direction to a predetermined position, and the ratchet device swings relative to the pressing mechanism differently.

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