TWI679088B - Pipe wrench - Google Patents

Abstract

The invention relates to a water pipe clamp, which comprises a first clamp body, a hinge and a second clamp body. The first forceps body includes a first grip portion, a first clamping portion, and a body portion, and the body portion is provided with at least one guide tooth groove. The pivot is slidably disposed on the at least one guide tooth groove, and the pivot can be slid along an axial direction between a locked position and a released position. The second forceps body includes a second grip portion, a pivot hole, and a second clamping portion. The pivot is pivotally connected to the pivot hole.

Description

Water pipe clamp

The invention relates to a water pipe clamp.

According to the general, the water pipe pliers include a first pliers body and a second pliers body which are pivoted to each other, and the first pliers body is provided with a chute, and a pivot is provided in the chute, and the second pliers body is pivoted on the The hub so that the second jaw body can slide and swing relative to the first jaw body, and in a normal state, the first tooth portion of the jaw body is engaged with the second tooth system of the hub, and by pressing the hinge By disengaging the first tooth portion from the second tooth portion, the hinge and the first jaw body can be slid relative to the first jaw body, and the first clamping portion fixed by one of the first jaw bodies can be adjusted. The relative distance from the movable second clamping portion of one of the second pliers, after the adjustment is completed, the second clamp can be pivoted so that the movable second clamping portion faces the fixed first clamping portion The pivot is close to achieve the purpose of clamping the four corners and hexagonal joints of a water pipe. The water pipe pliers disclosed in Chinese Bulletin No. CN204843895 belong to this category. At the same time, in order to improve the meshing tightness between the first and second pliers and the overall water pipe Fit, an elastic member is provided at the bottom of the hub to elastically abut the hub, so that the second tooth portion of the hub can ensure the Upper and lower teeth engaged, as CN106103000, US2557296, US4269089, US2017 / 0066112 and the like.

However, this type of conventional water pipe pliers still has the following disadvantages. Under normal conditions, the first tooth portion and the second tooth portion mesh with each other to position and lock the position, but when the pivot is pressed along the axis of the pivot When the button is pressed, although the first tooth portion and the second tooth portion can be smoothly and easily disengaged from each other, and the hub and the first forceps are slid relative to the first forceps, when the hinge is released, as shown in FIG. 14 It is shown that after the first tooth portion B1 and the second tooth portion B2 move relatively horizontally, the tooth peak of the first tooth portion and the tooth root of the second tooth portion cannot follow the pivot because of the relationship between the tooth pitch and the tooth shape. The axial direction of B3 is smoothly and easily locked with each other, so that the second tooth portion of the hub cannot smoothly and easily mesh with the first tooth portion and the hub cannot be positioned in the locked position, which will cause the hub and the first clamp The body will still slide relative to the first jaw body, and most of them need to be manually fine-tuned by the user to adjust the relative position of the hinge and the first jaw body so that the hinge and the first jaw body can be just right. Positioning and meshing, therefore, it is known that the water pipe pliers are not easy to handle during the decoration operation, and there are shortcomings that need to be improved.

Therefore, it is necessary to provide a novel and progressive water pipe clamp to solve the above problems.

The main object of the present invention is to provide a water pipe pliers. When the hinge is released, the guide tooth groove of the first forceps body and the limiting tooth portion of the hinge can be smoothly and easily aligned and locked. Therefore, the hinge can be freely and quickly aligned so that the The guide groove and the limit tooth can smoothly and easily engage and lock, so the hub can be quickly and easily switched to the locked position or the released position to effectively improve work efficiency.

To achieve the above object, the present invention provides a water pipe clamp including a first clamp body, a hinge, and a second clamp body. The first forceps body includes a first grip portion, a first grip portion, and a body portion connected between the first grip portion and the first grip portion. The body portion is provided with at least one guide. Cogging. The hub is slidably disposed on the at least one guide gear slot, the hub is slidable along a axial direction in a locked position and a released position, and the hub is provided with at least one limiting tooth portion and at least one elastic member, Each should arrive The piece corresponds to a limiting tooth portion along the axial direction. The second forceps body includes a second grip portion, a pivot hole, and a second clamping portion. The pivot is pivotally connected to the pivot hole, and the second forceps body is slid relative to the first forceps body. Or pivoting, the first clamping portion can move relative to the second clamping portion. Wherein, when the hub is in the locked position (in the state of no manual operation and when the hub is not pressed), the limit tooth and the guide tooth groove are engaged with each other, and the elastic member is exposed on the guide tooth. Outside the groove, it does not snap into the guide tooth groove; when the pivot is let in the release position (under the finger pressing the hinge), the limit tooth part is separated from the guide tooth groove, and the spring abutment member Releasably stuck between the two tooth gaps of the guide tooth groove.

This creation:

1,1A‧‧‧First clamp body

2,2A‧‧‧ Hub

3‧‧‧Drive handle

4‧‧‧Clamp

5,5A‧‧‧Second forceps

11‧‧‧ the first grip

12‧‧‧First clamping section

13,13A‧‧‧body

14,14A‧‧‧Guide Cogging

15‧‧‧ tank

16‧‧‧Chute

131‧‧‧Side plate

22‧‧‧ limit tooth

23‧‧‧ arrived

24‧‧‧The first elastic member

25‧‧‧first connector

26‧‧‧Second connection

231‧‧‧Card

232‧‧‧Second elastic member

251‧‧‧ Rod

252‧‧‧first head

253‧‧‧ convex

254‧‧‧Kao

261‧‧‧Second Head

262‧‧‧perforation

263‧‧‧concave hole

264‧‧‧Ka Con

31‧‧‧Second grip

32‧‧‧ cam

33,33A‧‧‧ Pivot

41‧‧‧Second clamping section

42‧‧‧ Slider

43‧‧‧ recess

51‧‧‧ partition

27‧‧‧Lock Firmware

28‧‧‧ Rongcon

221‧‧‧ bevel

L1‧‧‧first length

L2‧‧‧Second Length

L3‧‧‧ third length

Know:

B1‧‧‧First tooth

B2‧‧‧Second tooth

B3‧‧‧ Hub

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 present invention.

FIG. 3 is a partial perspective view of a preferred embodiment of the present invention.

FIG. 4 is another perspective view of a preferred embodiment of the present invention.

FIG. 5 is a cross-sectional view of a hinge in a locked position according to a preferred embodiment of the present invention.

FIG. 5A is a partially enlarged view of FIG. 5.

FIG. 6 is a cross-sectional view of the operation when the pivot is moved to the half-release position according to a preferred embodiment of the present invention.

FIG. 7 is an operation cross-sectional view when the hinge is moved to the fully released position according to a preferred embodiment of the present invention.

8 to 9 are operation schematic diagrams of a preferred embodiment of the present invention.

10 to 11 are cross-sectional operation views of the A-A end surface of FIG. 8.

FIG. 12 is a perspective view of another preferred embodiment of the present invention.

FIG. 13 is an exploded view of another preferred embodiment of the present invention.

Fig. 14 is a sectional view of the pivot operation of the conventional water pipe clamp.

The following only illustrates the possible implementation aspects of the present invention by way of examples, but is not intended to limit the scope of the present invention to be protected, which will be described first.

Please refer to FIGS. 1 to 11, which show a preferred embodiment of the present invention. The water pipe clamp of the present invention includes a first clamp body 1, a hinge 2 and a second clamp body 5.

The first forceps body 1 includes a first grip portion 11, a first gripping portion 12, and a body portion 13 connected between the first grip portion 11 and the first gripping portion 12. The portion 13 is provided with at least one guide tooth groove 14.

The pivot 2 can be slidably disposed on the at least one guide tooth slot 14. The pivot 2 can be slid in a locked position and a released position along an axial direction. The pivot 2 is provided with at least one limit tooth 22 and at least A resilient abutment member 23, each resilient abutment member 23 corresponding to a limiting tooth portion 22 along the axial direction.

The second pliers body 5 includes a second grip portion 31, a pivot hole 33 and a second clamping portion 41. The hinge 2 is pivotally connected to the pivot hole 33 and is opposed to the second pliers body 5. When the first forceps body 1 slides or pivots, the first clamping portion 12 can move relative to the second clamping portion 41.

Wherein, when the hinge 2 is in the locked position, the limiting tooth portion 22 is engaged with the guide tooth groove 14 and the clamping member 231 of the resilient member 23 is not locked into the guide tooth groove 14 (as shown in FIG. 5). (Shown), the hub 2 and the second caliper body 5 cannot slide relative to the guide tooth groove 14; when the hub 2 moves to the release position, the limit tooth 22 is in phase with the guide tooth groove 14 It is disengaged and the elastic abutment member 23 can be snapped against the gap between the guide teeth 14 (as shown in FIGS. 6 to 7). In detail, when the hub 2 is initially pressed for a short distance, the elastic abutment The piece 23 then enters between the teeth gaps of the guide slot 14; when the hinge 2 is pressed to the end When in the fully released position, the limiting tooth portion 22 is separated from the guide tooth groove 14, and the hinge 2 can be translated along the guide tooth groove 14 to change the size of the clamp of the water pipe clamp. 2 Repeated compression, internal contraction, and resetting can be stuck at any time between the gaps of the guide slot 14; when the hinge 2 is released, it is guided by the resilient member 23, which can easily and smoothly make the limit. The bit tooth portion 22 and the guide tooth groove 14 mesh with each other, and can be easily reset and locked again at any position. At the same time, when the hinge 2 is slid at any position of the guide tooth groove 14, the elastic member 23 will be guided by the guide. The tooth groove 14 is freely compressed and retracted near the tooth peak, and the elastic abutment member 23 will also be near the tooth root of the first tooth portion, and then freely reset and directly enter the gap between the two teeth of the guide tooth groove, alternating alternately. During the movement, the elastic abutment member 23 can jump out of the guide tooth groove 14, and the pivot 2 and the second forceps 5 can slide along the extending direction of the guide tooth groove 14 (as shown in FIGS. 10 and 11). ) To quickly adjust the relative position of the second pliers body 5 and the first pliers body 1, and because the resilient member 23 can be freely caught on the guide Between the gaps between the teeth of the slot 14, and when the finger releases the hinge 2 to return it to the locked state, the spring abutment member 23 is only at the point perpendicular to the tooth peak of the guide slot 14, except most of the other Both will automatically guide the elastic abutment member 23 to fall between the two tooth gaps of the guide tooth groove 14, and the center of the elastic abutment member 23 is equal to the center of any one of the teeth of the limit tooth portion 22. This will make the limit The positioning tooth portion 22 and the guide tooth groove 14 are smoothly and easily aligned with each other and locked. Therefore, when the pivot 2 is to be aligned to the locked position, the limiting tooth portion 22 and the guide tooth groove 14 can be made to be locked. It can be engaged quickly and smoothly in alignment, so that the limit tooth 22 and the guide tooth groove 14 can be prevented from abutting against each other along the axial direction due to the mutual tooth facing tooth surface, so that the pivot 2 cannot be aligned to the The conventional disadvantage of the locked position is that the present invention can smoothly and easily engage the guide slot 14 and the limiting tooth portion 22, so the hub 2 can be quickly switched between the locked position and the released position to effectively improve work efficiency.

Specifically, in this embodiment, the body portion 13 includes two opposite side plates 131 and a guide tooth groove 14 is respectively penetrated, and a receiving groove 15 is formed between the two side plates 131. The two sides of the two side plates 131 are opposite to each other. A chute 16 is recessed, and the two chutes 16 are parallel to the two guide tooth grooves 14 and do not overlap. The second forceps body 5 includes a driving handle 3 and a clamping member 4. The driving handle 3 and the first forceps body 1 are pivoted at the hinge 2. One end of the driving handle 3 is provided with the second grip portion 31. The other end is provided with a cam 32, the driving handle 3 is provided with the pivot hole 33, and the clamping member 4 includes the second clamping portion 41 and a slider 42 connected to the sliding portion 42. The two sliding grooves 16, the clamping member 4 is provided with a recessed portion 43, the cam 32 is inserted into the recessed portion 43, and the cam 32 is slid or pivoted relative to the first forceps 1 by the driving handle 3. The clamping member 4 can be controlled to slide relative to the first jaw body 1 so that the first clamping portion 12 and the second clamping portion 41 can smoothly and easily clamp a tube. In this embodiment, the slider 42 of the clamping member 4 is a rectangular column, and the two sliding grooves 16 are ㄇ -shaped grooves to cooperate. The recess 43 is recessed in the slider 42. In other embodiments, the slider 42 The block 42 and the two sliding grooves 16 may have other shapes (such as a cylindrical shape and an arc-shaped groove, respectively). In this embodiment, the hub 2 is further provided with a first elastic member 24, and the first elastic member 24 is elastically abutted between the driving handle 3 and the hub 2 to normally move the hub 2 toward the locked position. So that the hinge 2 can be automatically aligned to the locked position when it is not subject to external force.

Further, each of the resilient members 23 includes a clamping member 231 and a second elastic member 232, and the hub 2 is provided with at least one receiving hole 28, and each of the resilient members 23 of the resilient member 23 and a second elastic member 232 The receiving hole 28 is accommodated in the receiving hole 28. The second elastic member 232 normally abuts the clamping member 231 toward the outside of the receiving hole 28. In this embodiment, the clamping member 231 is a ball, so as to smoothly and easily escape the guide cogging 14, the diameter of the receiving hole 28 is slightly larger than the radial size of the ball, and the surface of the receiving hole 28 is riveted to prevent The balls fall off.

Preferably, the hinge 2 includes a first connecting member 25 and a second connecting member 26. The first connecting member 25 is provided with a rod member 251 connected to the second pliers body. 5 of the pivot hole 33, the second connecting member 26 is in contact with one end of the lever member 251, and the first elastic member 24 is sleeved on the lever member 251 to facilitate installation. It should be noted that, in the embodiment, the first connecting member 25 and the second connecting member 26 are respectively provided with a plurality of the limiting tooth portions 22, and in the embodiment, the at least one elastic member 23 and the at least one A hole The number of 28 is two, and the two elastic contact pieces 23 and the two accommodation holes 28 are provided on the first connecting member 25. In other embodiments, the number of the limiting teeth 22, the elastic contact pieces 23 and the accommodation holes 28 are Can be other configurations, not limited to this.

In addition, a distal end of the first connecting member 25 and the second connecting member 26 are respectively provided with a first head 252 and a second head 261 in a radial direction, and the first head 252 and the second head are respectively provided. A radial dimension of 261 is larger than a width of the guide cogging 14 to prevent the first connecting member 25 and the second connecting member 26 from separating from the two side plates 131.

Preferably, a small diameter convex portion 253 is provided at one end of the rod member 251 away from the first head portion 252. The convex portion 253 is inserted into a through hole 262 of the second connecting member 26 and a locking member 27. One side of the through hole 262 away from the first connecting member 25 is screwed with the convex portion 253. The maximum radial dimension of the locking member 27 is larger than the radial dimension of the through hole 262, so that the first connecting member 25 and The second connecting member 26 can be easily and easily fixed and is not easy to be separated from each other. A locking recess 254 is provided on each of the radial sides of the rod member 251, and the second connecting member 26 faces one side of the first connecting member 25. A recessed hole 263 is provided, and the rod member 251 is inserted in the recessed hole 263. The recessed hole 263 communicates with the perforation 262. The inner peripheral wall of the recessed hole 263 is provided with two convex projections 264, and the two convex projections 264 respectively. The two latches abut against the two latching recesses 254 to prevent the first connecting member 25 and the second connecting member 26 from rotating with each other.

It is worth mentioning that, in this embodiment, each of the limiting tooth portions 22 is provided with an inclined surface section 221 along one side of the axial direction. When the pivot 2 moves to the release position, the inclined surface of the limiting tooth portion 22 The segment 221 is oriented toward the corresponding guide slot 14. In detail, when the hub 2 is to be moved from the release position to the locked position, if the limit tooth 22 is not accurately aligned with the guide tooth groove 14 and cannot be engaged, each of the limit teeth The beveled section 221 of the portion 22 is oriented toward one of the corresponding guide tooth grooves 14 (as shown in FIGS. 5 to 7), and the beveled section 221 is first slid into the guide tooth groove 14 so that the limiting tooth portion 22 can Smoothly and easily engage with the guide tooth groove 14, the hinge 2 can be smoothly and easily aligned to the locked position, so the The inclined section 221 of the two limiting tooth portions 22 makes it easier for the hinge 2 to move from the released position to the locked position, which is more convenient in use.

Preferably, in this embodiment, a shortest distance along the axial direction between the limiting tooth portion 22 and the corresponding elastic member 23 defines a first length L1, and a thickness of the guide tooth groove 14 along the axial direction is defined. A second length L2, the second length L2 is greater than the first length L1 (as shown in FIG. 5), so when the limiting tooth portion 22 has not disengaged from the guide tooth groove 14, the resilient member 23 enters the The guide slot 14 can make the hub 2 smoother when switching between the locked position and the release position; and in this embodiment, the bottom edge of the first connecting member 25 and the guide slot on the opposite side. 14 outer edge, the width along the axial direction is defined as the third length L3, the third length L3 is greater than the second length L2 (as shown in FIG. 5 and FIG. 5A), which can ensure that the hub 2 is completely moved to the Release position (as shown in Figure 7).

Compared to the above embodiment, as shown in FIGS. 12 to 13, in another embodiment of the present invention, the body portion 13A of the first forceps body 1A is not provided with two side plates 131 and is provided with only one guide tooth groove 14A. The two clamp bodies 5A are provided with two partition plates 51, the pivot hole 33A is passed through the two partition plates 51, the first clamp body 1A is passed between the two partition plates 51, and the hinge 2A is pivotally connected to the two partition plates. The pivot hole 33A of the plate 51, so that the relative position of the second jaw body 5A and the first jaw body 1A can be quickly adjusted by the simpler structure in this embodiment, and the hinge 2A can still be quickly switched to the lock The position and the release position effectively improve the working efficiency. The rest of the structure is the same as the above embodiment, so it will not be described further.

In summary, when the pivot of the water pipe pliers of the present invention is to be aligned to the locked position, the spring can be smoothly aligned with the gap between the teeth of the guide cogging because the resilient member can be snapped against the gap between the guide teeth and The position-limiting tooth portion and the guide tooth groove can be quickly and smoothly and easily aligned with each other, thereby preventing the position-limiting tooth portion and the guide tooth groove from engaging with each other in the axial direction, so that the pivot cannot be aligned to The locked position, so The invention can smoothly and easily engage the guide tooth groove and the limiting tooth portion, and the hub can be quickly switched between the locked position and the released position to effectively improve the working efficiency.

Claims (13)

A water pipe pliers includes a first pliers body including a first grip portion, a first grip portion, and a body portion connected between the first grip portion and the first grip portion. The body is provided with at least one guide tooth groove; a pivot can be slidably disposed on the at least one guide tooth groove; the pivot can slide in a locking position and a release position along an axial direction; the pivot is provided with at least one The limiting tooth portion and at least one elastic contact member, each of the elastic contact members corresponding to the limiting tooth portion along the axial direction; a second forceps body, the second forceps body including a second grip portion, a pivot Hole and a second clamping portion, the pivot is pivotally connected to the pivot hole, and the second clamping body can be slid or pivoted relative to the first clamping body, so that the first clamping portion can be relative to the first clamping body The two clamping parts move; wherein, when the pivot is in the locked position, the limit tooth engages with the guide cogging and the resilient member does not snap into the guide cogging; when the pivot moves to the When the position is released, the position-limiting tooth part is separated from the guide tooth groove, and the elastic abutting member can be snapped between the tooth gaps of the guide tooth groove. The plumbing pliers according to claim 1, wherein the resilient member includes a clip member and a second elastic member, the hub is provided with at least one accommodation hole, and the clamp member and the second elastic member of the resilient member are accommodated in One should be concealed. According to the plumbing pliers described in claim 2, the second elastic member normally pushes the clamping member toward the outside of the accommodation hole. The clamping member is a ball. The diameter of the accommodation hole is slightly larger than the radial size of the ball. The surface of the hole is riveted to prevent the ball from falling off. The plumbing pliers according to claim 1, wherein the hub includes a first connecting member and a second connecting member, the first connecting member is provided with a connecting rod member, and the rod member passes through the second pliers. A pivot hole of the body, the second connecting member is in contact with one end of the rod member, and a first elastic member is sleeved on the rod member. The plumbing pliers according to claim 4, wherein a first head and a second head are respectively provided at a remote end of the first connection member and the second connection member, and the first head and the second head The radial dimension of the second head is larger than the width of the guide groove. The plumbing pliers according to claim 5, wherein the rod is further provided with a smaller diameter convex portion at one end away from the first head, the convex portion is inserted into a perforation of one of the second connecting members, and a locking member is provided. A screw is connected to the convex part from one side of the perforation far from the first connecting member. The maximum radial dimension of the locking member is larger than the radial dimension of the perforation. A radial recess is provided on each side of the rod. The second connecting member is provided with a recessed hole facing one side of the first connecting member. The rod member is inserted into the recessed hole, the recessed hole communicates with the perforation, and the inner peripheral wall of the recessed hole is provided with two latching protrusions. , The two card protrusions are respectively abutted against the two card recesses. The water pipe clamp according to any one of claims 1 to 6, wherein each of the limit tooth portions is provided with an inclined surface section along one side of the axial direction, and when the pivot is moved to the release position, the limit tooth portions The inclined section is oriented toward the corresponding guide cogging. The water pipe clamp according to any one of claims 1 to 6, wherein a shortest distance along the axial direction between the limiting tooth portion and the corresponding abutment member defines a first length, and the guide cogging is along the axis The thickness in the direction defines a second length, and the second length is greater than the first length. The water pipe pliers according to any one of claim 8, wherein the bottom edge of the first connecting member and the outer edge of the guide cogging on the opposite side, the width along the axial direction is defined as the third length, and the first The three lengths are greater than the second length. The plumbing pliers according to claim 1, wherein the second pliers body is provided with two partitions, the pivot hole is penetrated through the two partitions, the first pliers body is penetrated between the two partitions, and the pivot is inserted through A pivot hole is pivotally connected to the two partitions. The plumbing pliers according to claim 1, wherein the body includes two opposite side plates and a guiding tooth groove is respectively penetrated, a receiving groove is formed between the two side plates, and a slide is respectively recessed on the opposite side of the two side plates. The second chute body is parallel to the two guide tooth grooves and does not overlap. The second pliers body includes a driving handle and a clamping member. The driving handle and the first pliers body are pivoted at the hub, and the drive One end of the handle is provided with the second grip portion, and the other end is provided with a cam. The driving handle is provided with the pivot hole, the pivot is penetrated through the pivot hole, and the clamping member includes the second clamp connected to the second clamping portion. And a slider, the slider is slidably disposed in the two slide grooves, the clamping member is provided with a recess, the cam is inserted into the recess, and the driving handle is slid relative to the first forceps body or By pivoting, the cam can control the gripper to slide relative to the first forceps body. The plumbing pliers according to claim 11, wherein the hub is further provided with a first elastic member, and the first elastic member is elastically abutted between the driving handle and the hub to normally move the hub toward the locked position. The plumbing pliers according to claim 1, wherein the center of the resilient member is equal to the center of any tooth of the limiting tooth portion.