TWI636836B - Improved structure of pipe bender - Google Patents

Abstract

The improved structure of the pipe bender has an actuating handle, and the actuating handle is provided with an actuating member which can be controlled to extend axially along the actuating handle; the actuating handle is provided with a laterally extending supporting arm, and is located at The two ends of the actuating handle are respectively provided with a supporting device which can slide along the supporting arm, wherein each supporting device is provided with a base, and the base is provided with a grip portion which is surrounded by a gripping space, and the base is borrowed by the grip portion thereof. The gripping space is sleeved on the support arm, and the support device is positioned on the support arm after being slid to a selected position by a positioning mechanism.

Description

Improved structure of pipe bender

The invention relates to a pipe bender structure, and more particularly to a pipe bender in which a support block can slide on a support arm.

According to the conventional bender structure, as shown in Fig. 13, it has a longitudinally extending actuating handle 51, and a laterally extending support arm 52 spans over the actuating handle 51 to form a T-shaped cross. . In use, the tube 6 is always applied to the support block 53 at both ends of the support arm 52, and then the actuating handle 51 is operated, so that an actuating member 54 abuts against the straight tube 6 and continues to advance toward the longitudinal direction, so that the straight tube 6 is driven. Bending due to thrust.

However, in the conventional structure, the two supporting blocks 53 are fixed at the fixed position of the supporting arm 52, and cannot be adjusted according to the working conditions of the length of the pipe member 6 to be bent or the pipe diameter, and are difficult to apply to various pipe fittings. on. On the other hand, such a design makes the support arm 52 necessarily have a certain length, and in the state in which the support arm 52 and the actuating handle 51 are integrally fixed, the lateral expansion of the support arm 52 with respect to the actuating handle 51 actually occupies Excessive space is very inconvenient to store. In addition, if the support arm 52 and the actuating handle 51 are designed to be combined, that is, the support arm 52 can be removed during storage to reduce the occupied space, although the above-mentioned storage troubles can be solved, but both in use and in storage It takes time to assemble and disassemble, which causes another inconvenience.

In view of this, how to improve the above problem is the first solution to be solved by the present invention. Want a topic.

The main object of the present invention is to provide an improved structure of a bender, wherein the support arm has a retractable structure, thereby adjusting the length of the support arm protruding outward, and retracting the support arm during storage, thereby improving the convenience of storage.

In order to achieve the foregoing object, the present invention provides an improved structure of a pipe bender, comprising: an actuating handle, the actuating handle is movably provided with an actuating member that can be controlled to extend axially along the actuating handle; An arm is laterally disposed on the actuating handle, and a supporting device is disposed on the supporting arm at the two ends of the actuating handle, and the support device is configured to be coupled with the actuating member. Abutting the pipe to implement the elbow; wherein each supporting device is provided with a base, the base is provided with a pivotable supporting block; the base is provided with a grip portion, and a gripping space is formed in the grip portion, and The base is sleeved on the support arm by the gripping portion thereof; the support device is provided with a positioning mechanism for positioning the support device on the support arm after sliding to a selected position.

Wherein, a column body is erected on the base, and a hole is formed in the support block for the support block to pass through the outside of the column with its perforation.

The positioning mechanism includes a positioning member and an elastic member, and is sequentially received in the fixing hole, and a fixing member penetrates the through hole to fix the fixing hole. In the fixing hole, the elastic member is biased against the fixing member, and the elastic member of the elastic member acts on the positioning member to urge the positioning member against the supporting arm, and the supporting device is positioned on the supporting member. On the arm. The support arm is provided There are a plurality of positioning portions for the positioning member to select one of the positioning portions to be correspondingly positioned.

Further, the fixing hole of the cylinder is a screw hole, and the fixing member extends with a screw, and the screw hole corresponds to the screw hole.

In another embodiment, the positioning mechanism includes a clutch portion respectively disposed on the support arm and the base. When the clutch portions of the two are combined, the base can only unidirectionally slide along the support arm; When the clutch portions of the two are separated, the base can slide in both directions along the support arm. Preferably, the clutch portion of the support arm is an inverted tooth structure arranged along the support arm; and the clutch portion of the base is a pivoting hook member that can be controlled to be coupled with the inverted tooth structure of the support arm.

In another embodiment, the base extends a length along the extending direction of the support arm; and the relative slip of the base on the support arm allows a portion of the base to extend beyond the support arm to extend the bend The working length of the pipe. The positioning portion of the base is recessed with a receiving hole, and the positioning mechanism includes an elastic member and a positioning member, and is sequentially received in the receiving hole, and the elastic force of the elastic member is used. The positioning member is pushed against the support arm to position the support device on the support arm; and the support arm is provided with a plurality of positioning portions for the positioning member to select one of the positioning portions for corresponding positioning.

The above objects and advantages of the present invention will be readily understood from the following detailed description of the embodiments of the invention.

1‧‧‧ actuation handle

11‧‧‧Operator

12A, 12B, 12C‧‧‧ scale

2‧‧‧Support arm

21‧‧‧ Positioning Department

22‧‧‧ inverted tooth structure

23‧‧‧ Positioning Department

3‧‧‧Support device

31, 31A‧‧‧ base

311‧‧‧Bumps

312‧‧‧through slot

32‧‧‧Support block

321‧‧‧ trench

322‧‧‧Perforation

323‧‧‧ recesses

33, 33A‧‧‧ Grip

331‧‧‧ accommodating holes

34‧‧‧Scratch space

35‧‧‧Cylinder

351‧‧‧ screw hole

352‧‧‧stops

361‧‧‧ positioning parts

362‧‧ ‧ spring

37‧‧‧Fixed parts

371‧‧‧ screw

38‧‧‧ pivoting hook

381‧‧‧Hook

382‧‧ ‧ spring

41‧‧‧ Spring

42‧‧‧ steel balls

51‧‧‧ actuation handle

52‧‧‧Support arm

53‧‧‧Support block

54‧‧‧actuation

6‧‧‧ Straight tube

1 is a perspective view of a first embodiment of the present invention; FIG. 2 is a perspective exploded view of a first embodiment of the present invention; and FIG. 3 is a schematic cross-sectional view showing a support device and a support arm according to a first embodiment of the present invention; Combined state 4 is a perspective view of a second embodiment of the present invention; FIG. 5 is a perspective exploded view of a second embodiment of the present invention; and FIGS. 6 and 7 are schematic views showing a state of use of the second embodiment of the present invention; FIG. 9 is a perspective exploded view of a third embodiment of the present invention; FIG. 10 is a partial perspective sectional view and an exploded view of the third embodiment of the present invention; 3 is a schematic cross-sectional view showing a state in which a support device and a support arm are combined; FIG. 12 is a schematic view showing a storage state of a third embodiment of the present invention; and FIG. 13 is a plan view showing a conventional structure.

Referring to Figures 1 and 2, there is shown a first embodiment of the improved structure of the bender provided by the present invention, comprising an actuating handle 1, the actuating handle 1 being movably provided with a controllable The actuating member 11 of the axially extending handle 1 is operated; and the principle and structure of the action of the actuating member 11 are conventional techniques and will not be described in detail herein. The actuating handle 1 is provided with a support arm 2 laterally across the support arm 2 to form a T-shape, and a support device 3 is disposed on the support arm 2 at each end of the actuating handle 1 and is slidable along the support arm 2; The supporting device 3 is used to abut the pipe member 11 (not shown) together with the actuating member 11 to perform the action of the bent pipe.

The support device 3 is provided with a base 31. The base 31 is provided with a pivotable support block 32. In the embodiment, the support block 32 is a block body, and a support member is provided around the base member for receiving the pipe member. The groove 321 is supported and can be dismantled from the base 31 into support pieces of different specifications according to the requirements of use. The base 31 has a grip portion 33 extending downward, and a grip is formed in the grip portion 33. The base portion 31 is disposed on the support arm 2, and the grip portion 33 is sleeved on the support arm 2 by the grip portion 33. In other words, the grip portion 33 is formed in a structure that is hung on the support arm 2. In the specific structure of the embodiment, it is a loop hole provided at the bottom of the base 31, and the loop hole is This grip space 34 is formed. The support device 3 is sleeved on the support arm 2 with a ring sleeve of the base 31, and is slidable on the support arm 2, and the support device 3 is provided with a positioning mechanism for sliding the support device 3 Positioned on the support arm 2 after moving to the selected position.

As shown in FIG. 1 to FIG. 3, the supporting device 3 has a column 35 standing on its base 31, and a through hole 322 is defined in the supporting block 32 for the supporting block 32 to be sleeved with its through hole 322. The column 35 is outside, and the support block 32 can pivot about the column 35, and a stopper 352 is disposed at the top end of the column 35 to prevent the support block 32 from falling off. The base 31 and the support block 32 are respectively provided with opposite concave and convex positioning structures. For example, the base 31 is provided with a protrusion 311, and the support block 32 is provided with a corresponding recess 323, and the support block 32 and the base 31 are provided. The role of positioning. In addition, in the embodiment, the column 35 is provided with a fixing hole penetrating into the gripping space 34, and the positioning mechanism includes a positioning member 361 and an elastic member (here, a spring 362), and The fixing member is disposed in the fixing hole, and a fixing member 37 is inserted into the fixing hole 322 to be fixed in the fixing hole, so that the spring 362 abuts the fixing member 37. In the embodiment, the fixing hole is a screw hole 351. On the other hand, the fixing member 37 is extended with a screw 371, and can be correspondingly locked in the screw hole 351. Thereby, one end of the spring 362 forms a relatively fixed end against the screw 371, and the other end abuts against the positioning member 361 by its elastic force, so that the positioning member 361 abuts against the support arm 2 to position the supporting device 3. Further, a plurality of positioning portions 21 are provided along the support arm 2 The positioning portion 21 is embodied as a recess for the support device 3 to slide on the support arm 2 to one of the recesses and correspondingly positioned therein.

The screw 371 of the fixing member 37 is locked into the depth of the screw hole 351, and the spring force of the spring 362 is pushed against the positioning member 361 to adjust the strength of the supporting device 3 on the support arm 2.

With the above structure, the support device 3 of the present invention can be slid along the support arm 2 to an appropriate position and positioned corresponding to the diameter and length of the pipe to be bent, so that the actuating member 11 can be operated to perform the bending operation. . A scale 12A indicating the angle of the elbow is provided on the actuating member 11 for easy observation to know the working progress of the elbow. On the other hand, the support arm 2 and the base 31 are respectively provided with scales 12B and 12C indicating the position of the support device 3 and the rotation angle of the support block 32, which have the same function as the scale of the actuator handle 1, and are advantageous for operation. Convenience in interpretation.

The fourth embodiment to the seventh embodiment are the second embodiment of the present invention, and the difference between the present embodiment and the first embodiment described above is the change of the positioning mechanism. In this embodiment, the positioning mechanism includes a clutch portion respectively disposed on the support arm 2 and the base 31. When the clutch portions of the two are combined, the base 31 can only unidirectionally slide along the support arm 2 When the clutch portions of the two are separated, the base 31 can slide in both directions along the support arm 2. In detail, a row of inverted tooth structures 22 is disposed along the support arm 2, and the base 31 is provided with a slot 312. The slot 312 is centrally provided with a pivoting hook 38, wherein the pivoting hook 38 has a hook The portion 381 is permanently hooked to the inverted tooth structure 22 of the support arm 2 by the elastic force of a spring 382. Therefore, as shown in FIG. 6, when the two are hooked to each other, the supporting device 3 can only unidirectionally slide the base 31 along the guiding direction of the inverted tooth structure 22, but cannot slide in the opposite direction. And get the positioning effect.

When it is necessary to freely adjust the position of the supporting device, it can be controlled as shown in Fig. 7. The pivoting hook 38 is pivoted to disengage the hook portion 381 from the inverted tooth structure 22 of the support arm 2. In this way, the support device 3 is disengaged and can freely slide in both directions on the support arm 2.

Furthermore, the figures shown in FIGS. 8 and 9 are the third embodiment of the present invention. The present embodiment achieves the purpose of extending the working length of the bender by sliding the support device 3 on the support arm 2. . In detail, the base 31A extends a length along the extending direction of the support arm 2, thereby forming a long structure. The relative slip of the base 31A on the support arm 2 allows a portion of the base 31A to extend out of the support arm 2, thereby extending the working length of the bender.

In the structure of the embodiment, as shown in FIGS. 10 and 11, the grip portion 33A of the base 31A is recessed with a receiving hole 331, and the positioning mechanism includes a spring 41 and a steel ball 42. It is disposed in the receiving hole 331. The spring 41 pushes against the steel ball 42 with its elastic force to abut against the support arm 2. Further, the support arm 2 is provided with a plurality of positioning portions 23, which are formed as a structure of the recesses. After the support device 3 is slid to the proper position on the support arm 2, the steel ball 42 is subjected to the spring 41. Pushing and protruding into one of the positioning portions of the support arm 2 can be used to obtain a positioning effect.

The advantage of this embodiment is that the variability of the working length is utilized, except that it can be extended to the required length, and on the other hand, when the pipe bender is used and is to be stored, it can be edged as shown in Fig. 12. The support arm 2 retracts the support device 3 to shorten the working length, that is, shortens the maximum distance from the actuating handle 1 to the two sides, thereby reducing the occupied space and improving the convenience of storage.

The disclosure of the above embodiments is intended to be illustrative of the invention and is not intended to limit the invention.

In summary, it will be apparent to those skilled in the art that the present invention can achieve the foregoing objectives. It has already complied with the provisions of the Patent Law and has applied for it according to law.

Claims (8)

An improved structure of a pipe bender includes: an actuating handle, the actuating handle is movably provided with an actuating member extending axially along the actuating handle; and a supporting arm laterally spanning The supporting handle is disposed on the supporting arm at each of the two ends of the actuating handle, and is respectively provided with a supporting device that can slide along the supporting arm, and the supporting device is used to abut the pipe member together with the actuating member to implement the bent pipe; Each supporting device is provided with a base, and a supporting block is arranged on the base, and a column body is erected on the base, and a through hole is formed in the supporting block, and the supporting block is pierced and sleeved on the outside of the column by the through hole. The support block can be pivoted by the cylinder; the base is provided with a grip portion, and a gripping space is formed in the grip portion, and the base is sleeved by the grip portion by the gripping space The support arm is provided with a positioning mechanism for positioning the support device on the support arm after sliding to a selected position. The improved structure of the pipe bender according to claim 1, wherein the column body is provided with a fixing hole penetrating into the gripping space, and the positioning mechanism comprises a positioning member and an elastic member, and is sequentially accommodated in A fixing member is inserted into the through hole and fixed in the fixing hole, so that the elastic member abuts the fixing member, and the elastic member of the elastic member acts on the positioning member to make the positioning member Pushing the support arm to position the support device on the support arm; the support arm is provided with a plurality of positioning portions for selecting the positioning member One of the positioning portions corresponds to the positioning. The improved structure of the bender of claim 2, wherein the fixing hole of the cylinder is a screw hole, and the fixing member extends with a screw, and the screw hole corresponds to the screw hole. The improved structure of the bender of claim 1, wherein the positioning mechanism comprises a clutch portion respectively disposed on the support arm and the base, and when the clutch portions of the two are combined, the base can only follow the The support arm slides in one direction; and when the clutch portions of the two are separated, the base can slide in both directions along the support arm. The modified structure of the bender of claim 4, wherein the clutch portion of the support arm is an inverted tooth structure arranged along the support arm; the clutch portion of the base is controllable and inverted with the support arm The pivoting hook of the tooth structure clutch. The improved structure of the bender of claim 1, wherein the base extends a length along the extending direction of the support arm; the relative slip of the base on the support arm allows a portion of the base to extend Outside the support arm, to extend the working length of the bender. The improved structure of the pipe bender according to claim 6, wherein the grip portion of the base is recessed with a receiving hole, and the positioning mechanism comprises an elastic member and a positioning member, and is sequentially accommodated in the capacity In the hole, the elastic member of the elastic member urges the positioning member against the support arm to position the supporting device on the support arm; and the support arm is provided with a plurality of positioning portions for the positioning Select one of the positioning parts to correspond to the positioning. The improved structure of the bender of claim 1, wherein the base and the support block are respectively provided with opposite concave and convex positioning structures.