TW201930020A - Pipe wrench - Google Patents

Abstract

A pipe wrench includes a first clamp body, a driving handle and a clamping element. The first clamp body includes a body portion. The body portion includes two side panels. The two side panels respectively have a guide tooth-groove therethrough. An accommodating groove is formed between the two side panels. Two opposite side faces of the two side panels each have a sliding slot. The driving handle is slidably assembled to the two guide tooth-groove and is rotatable relative to the first clamp body. The driving handle has a cam. The clamping element is slidably assembled to the two sliding slots. The clamping element has a notch. The cam is swingably inserted into the notch. The clamping element linearly moves during clamping a workpiece.

Description

Water pipe clamp

The present invention relates to hand tools, and more particularly to a water pipe clamp.

Pressing, the general water pipe clamp includes one of the first caliper body and the second caliper body, and the first caliper body defines a sliding slot to allow the second caliper body to slide relative to the first caliper body. The relative distance between the fixed clamping portion of one of the first caliper body and the movable clamping portion of the second caliper body can be adjusted by sliding the second caliper body, and the second caliper body can be pivoted after being adjusted. The movable clamping portion is pivoted toward the fixed clamping portion to achieve the purpose of clamping the four corners and the hexagonal joint of a water pipe, and the water pipe clamp disclosed in TWM511931 is such. However, the movable clamping portion of the conventional water pipe clamp is in a pivotal manner (arc movement) and is close to the fixed clamping portion. When the four corners and the hexagonal joint of the water pipe are clamped, the fixed clamping portion and the movable clamp are caused. The connection between the four corners of the clamping water pipe and the point of application of the hexagonal joint does not penetrate the center of the clamped member, that is, the two clamping portions are non-parallel, so that when the conventional water pipe clamp firmly holds the four corners of the water pipe When the hex joint is used, the clamped member is caused to slip between the fixed clamping portion and the movable clamping portion. In severe cases, the four corners of the water pipe and the hexagonal joint are separated from the clamping portion, and the working efficiency is greatly reduced.

In addition, the water pipe clamp disclosed in the publication No. EP0421107 includes a body, the body is provided with a fixing cymbal, and a clamping member slidably disposed on the body, the concave side of the two sides of the body has a sliding slot, and the clamping member is provided with The two side plates are convexly disposed on the two side surfaces, and the two sliding blocks are slidably disposed on the two sliding slots to enable the clamping member to be slidably disposed on the body, but the two side plates of the clamping member The structure in which the bumps are convexly facing each other is formed by the forging method, but the machining is extremely difficult, and it must be made by precision casting (commercially available), and the structural strength of the precision-molded clamp is poor. Durability is not enough and the cost is too high.

Further, the quick-adjusting pliers as described in the publication No. CN204843895, the main body is provided with two side plates, respectively, the two side plates are respectively provided with a receiving groove, and the clamping member (the bullet number is called the second jaw) has a guiding protrusion, The guiding protrusion is slidably disposed on the receiving groove so that the clamping member can slide relative to the body, but the thickness of the guiding protrusion must be greater than the width of the receiving groove to fit and slide with each other, so that The method of assembling the clamping member to the body is to first open the two side plates (symbols 102, 103 of the bulletin number) so that the two side plates are away from each other, and when the width of the two side plates is widened enough, The clamping member can be placed between the two side plates and the two protrusions can be inserted into the receiving groove, and then the two side plates can be pressed together so that the two side plates are close to each other until the two convex members of the clamping member The block is limited to the receiving groove and the clamping member cannot be separated from the two side plates. Since the finished product is assembled, the body has been subjected to a heat treatment process, so that the two side plates have hardness and rigidity, and the two side plates are opened and re-assembled. Operated by the press, so The joint causes the structural strength to be damaged, and the durability and precision of the two side plates are considered, and the length of the guiding protrusion of the clamping member in the sliding direction is relatively short, so that the clamping member slides When the body is easily swayed, the guide groove of the accommodating groove is provided with a plurality of teeth. When the force is clamped, the guide protrusion is directly pressed on the upper tooth surface of the guiding groove, which will cause the tooth surface. Damaged. 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 clamp, wherein the first clamping portion and the second clamping portion slide relative to each other, and can effectively clamp the four corners of the water pipe and the hexagonal joint, and the second clamp of the water pipe clamp The holding portion can effectively reduce the shaking with the first caliper body and can have higher clamping accuracy.

In order to achieve the above object, the present invention provides a water pipe clamp comprising a first caliper body, a driving handle and a clamping member. The first caliper body includes a first handle portion, a first clamping portion and a body connected between the first handle portion and the first clamping portion, the body portion comprising two opposite side plates and The two side plates are formed with a plurality of guiding slots. The two side plates are respectively recessed with a sliding slot on one side of the two side plates. The two sliding slots are parallel to the two guiding slots and do not overlap. The driving handle and the first caliper body are pivotally disposed on a pivot portion. The pivoting portion is slidably disposed in the two guiding gullets. One end of the driving handle is provided with a second grip portion, and the other end is provided with a cam. . The clamping member includes a second clamping portion and a slider connected between the two side plates and slidingly disposed on the two sliding slots, the second clamping portion being opposite to the first clamping portion The holding portion is provided with a recess, and the cam is rotatably inserted into the recess. The cam can control the sliding of the clamping member relative to the first caliper body by sliding or pivoting the driving handle relative to the first caliper body.

The following is a description of the possible embodiments of the present invention, and is not intended to limit the scope of the invention as claimed.

Referring to Figures 1 through 6, there is shown a preferred embodiment of the present invention. The water pipe clamp of the present invention includes a first caliper body 1, a drive handle 2 and a clamp member 3.

The first caliper body 1 includes a first handle portion 11 , a first clamping portion 12 , and a body 13 connected between the first handle portion 11 and the first clamping portion 12 . The portion 13 includes two opposite side plates 131 and two guiding slots 14 are formed. A slot 17 is formed between the two side plates 131. The two side plates 131 are respectively recessed with a sliding slot 15 on one side thereof. The two sliding slots 15 are respectively recessed. It is parallel to the two guiding slots 14 and does not overlap.

The driving shank 2 and the first caliper body 1 are pivotally disposed on a pivot portion 4 . The pivoting portion 4 is slidably disposed on the two guiding gullets 14 , and one end of the driving handle 2 is provided with a second grip portion 21. The other end is provided with a cam 22.

The clamping member 3 includes a second clamping portion 31 and a slider 32. The slider 32 is disposed in the receiving slot 17 and is slidably disposed on the two sliding slots 15. The second clamping portion 31 With respect to the first clamping portion 12, the clamping member 3 is provided with a recess 34 into which the cam 22 is rotatably inserted.

With reference to FIGS. 7 to 9 , the cam 22 can control the sliding of the clamping member 3 relative to the first caliper 1 by sliding or pivoting relative to the first caliper 1 . In detail, when the driving handle 2 slides relative to the first caliper body 1 (as shown in FIGS. 7 and 8), since the driving handle 2 is in a free state, the cam 22 also interlocks to drive the clamping. The member 3 slides slightly along the direction of the two sliding slots 15 relative to the first caliper body 1 when the driving handle 2 pivots relative to the first caliper body 1 (as shown in FIG. 9), due to the cam 22 system Rotating in the recess 34, the cam 22 can abut the recess 34 of the clamping member 3, and slide along the direction of the two sliding slots 15 with a small amplitude relative to the first caliper body 1, the second clamping The portion 31 can be adjacent to or away from the first clamping portion 12 to clamp a four-corner, hexagonal joint of a water pipe (also used in other embodiments for holding other objects).

Referring to FIG. 10 and FIG. 11 , further, the pivot portion 4 includes an elastic member 41 and a hinge 42 . The driving handle 2 is provided with a pivot hole 23 , and the pivot 42 is formed by the first connecting member 421 and the second portion. The connecting member 422 is formed in the pivot hole 23 and the guiding slot 14 and is provided with at least one limiting tooth portion 43. The pivoting member 42 is disposed in the pivot hole 23 and axially slidable in a locking position. And the elastic member 41 is received between the baffle 231 and the hinge 42 so that the hinge 42 normally faces The locking position is moved; wherein, when the hinge 42 is in the locking position (as shown in FIG. 10), the at least one limiting tooth portion 43 is engaged with the two guiding slots 14 , and the driving handle 2 cannot be opposite to the The two guiding slots 14 are slipped; when the hinge 42 is pressed and moved to the releasing position (as shown in FIG. 11 ), the at least one limiting tooth portion 43 will be disengaged from the two guiding slots 14 , the driving handle 2 can slide relative to the two guiding slots 14 .

The hinge 42 is provided with two limiting tooth portions 43 respectively corresponding to a guiding tooth groove 14 , and the hinge 42 will be in a locking position in a natural state, and each of the limiting tooth portions 43 A meshing engagement with a guide slot 14 is provided. It is to be noted that each of the limiting tooth portions 43 is provided with at least one inclined surface portion 431 along the axial direction of the pivot portion 4, and when the hinge 42 is pressed and moved to the releasing position, each of the limiting tooth portions 43 at this time The beveled section 431 is separated from the one of the guide slots 14 corresponding to the original orientation. In detail, when the hinge 42 is in the release position and the opening width is changed, the hinge 42 is intended to be moved from the release position to the locked position, because the limit tooth portion of the existing commercially available product is along the axial direction of the pivot portion. The direction is vertical, so that the limiting tooth portion is in full contact with the guiding tooth groove. Even if the limiting tooth inlet end is chamfered, it is still not easy to accurately align with the guiding tooth groove at one time. Engagement, in this patent, since the beveled section 431 of each of the limiting tooth portions 43 is oriented toward the corresponding one of the guiding slots 14 (as shown in FIGS. 11 and 11A), the beveled section 431 is first brought into contact with the sliding section 431. The guiding tooth groove 14 is configured such that the limiting tooth portion 43 can smoothly mesh with the guiding tooth groove 14, and the hinge 42 can be smoothly moved to the locking position (as shown in FIGS. 10 and 10A), so the second limit The beveled section 431 of the toothed portion 43 allows the pivot 42 to be easily moved from the released position to the locked position, which is more convenient to use.

Specifically, a neck portion 33 is further disposed between the second clamping portion 31 and the slider 32. The two side plates 131 are respectively oppositely disposed with a flange 16 parallel to the direction of the two sliding slots 15, the neck 33 is located in the two side plates 131 and is slidably disposed on the two flanges 16. The second clamping portion 31 is adjacent to the end surface of the neck portion 33 to form an abutting surface 35. The abutting surface 35 is abutted against the The slide surface 132 above the two side plates 131 is slidable left and right, and the clamping member 3 can be stably slidably moved relative to the first caliper body 1, which can effectively reduce the gap between the clamping member 3 and the first caliper body 1. Shaking occurs, which causes instability in the four-corner and hexagonal joints that hold the water pipe. Therefore, the slider 32 of the water pipe clamp is slidably disposed between the sliding grooves 15 of the two side plates 131, thereby preventing the two sliding grooves 15 and the slider 32 from being collided by foreign objects, thereby causing the slider 32 or the The two chutes 15 are deformed and twisted, and the two chutes 15 are disposed on the inner side of the two side plates 131 to be less likely to accumulate dust and are not easily corroded by liquid splashing, so the water pipe clamp can be more durable and the clamping member 3 can smoothly slide relative to the first caliper 1 to increase the accuracy of clamping the four corners and hexagonal joints of the water pipe, thereby improving work efficiency.

Referring to FIG. 4, wherein the maximum width of the second clamping portion 31 defines a first width A along the axial direction, and the maximum width of the slider 32 defines a second width B, the first width A. The ratio of the second width B to the second width B is between 0.75 and 0.32. In the embodiment, the ratio of the first width A to the second width B is 0.65, and the second width B is greater than the first width A. The slider 32 can have a strong structural supporting force to support the second clamping portion 31, so that the clamping member 3 is less likely to be deformed and the second clamping portion 31 is bent. Preferably, in the embodiment, the recessed portion 34 is disposed on the slider 32. The recessed portion 34 is a concave curved surface, and the cam 22 is rotatable in the recessed portion 34 along the axial direction of the pivot portion 4. It should be noted that in other embodiments of the present invention, the distance of the second width may be smaller than the first width, and the concave portion may be disposed at one end of the second clamping portion facing the slider, and the cam of the driving handle is also rotatably Inserted into the recess so that the gripping member can likewise slide relative to the first caliper body.

In detail, in the embodiment, the hub 42 includes a first connecting member 421 and a second connecting member 422. The first connecting member 421 is provided with a rod member 4211, and the second connecting member 422 is provided with a sleeve 4221. The sleeve member 4221 is sleeved on the rod member 4211. The first connecting member 421 and the second connecting member 422 are respectively provided with a limiting tooth portion 43. Each of the limiting tooth portions 43 respectively corresponds to the guiding tooth groove 14 . . It is to be noted that in the embodiment, the rod 4211 is provided with a recess 4212 (shown in FIG. 2) facing one end of the sleeve 4221, and the bottom of the sleeve 4221 is provided with a recess 4212. The convex portion 4222 (shown in FIGS. 10 and 11 ), the concave portion 4212 and the convex portion 4222 are inclined to be engaged, so that the two limiting tooth portions 43 can be accurately aligned, and the rod member 4211 is The sleeve 4221 can be sleeved on the rod member 4211 in a tight fit manner, and the rod member 4211 can also be a non-circular rod body, which cooperates with the non-circular groove of the sleeve 4221. The limiting tooth portion 43 of the first connecting member 421 and the limiting tooth portion 43 of the second connecting member 422 can be accurately positioned on the two guiding slots 14 to avoid the problem of interference jamming.

In addition, preferably, the first connecting member 421 and the second connecting member 422 are respectively disposed at a distance from each of the ends of the first connecting member 421 and the second connecting member 422 respectively. The radial direction of the two head portions 423 is larger than the two guiding slots. The first connecting member 421 and the second connecting member 422 cannot be separated from the two side plates 131.

It should be noted that, in this embodiment, the cross section of the slider 32 of the clamping member 3 is a rectangular shape. Please refer to FIG. 12 to FIG. 15 further. In another embodiment of the present invention, the clamping is performed. The slider 32A of the piece has a circular shape (as shown in FIG. 15), and the two chutes 15A are circular grooves. The rest of the structure is the same as that of the above embodiment, and therefore will not be described again.

In summary, in the water pipe clamp of the present invention, the first clamping portion and the second clamping portion are relatively horizontally slid, and the four corners and the hexagonal joint of the water pipe can be effectively clamped, and the second clamping portion of the water pipe clamp is It can effectively reduce the shaking with the first caliper body and can have higher clamping accuracy.

In addition, the slider is slidably disposed between the sliding grooves of the two side plates, so that the two sliding grooves and the sliding block are prevented from being collided by foreign objects, and the slider or the two sliding grooves are deformed and distorted. The groove is disposed on the inner side of the two side plates to be less likely to accumulate dust and is not easily rusted by liquid splashing, so the water pipe clamp can be relatively strong and durable, and the clamping member can smoothly slide relative to the first caliper body to Increase the accuracy of the four-corner and hexagonal joints of the water pipe, thereby improving work efficiency.

1‧‧‧ first tong body

2‧‧‧ drive handle

3‧‧‧Clamping parts

4‧‧‧Band

11‧‧‧First grip

12‧‧‧First clamping section

13‧‧‧ Body

131‧‧‧ side panels

132‧‧‧Slide surface

14‧‧‧ Guided gullet

15,15A‧‧‧ chute

16‧‧‧Flange

17‧‧‧ 容容

21‧‧‧Second grip

22‧‧‧ cam

23‧‧‧ pivot hole

231‧‧ ‧ baffle

31‧‧‧Second gripping section

32,32A‧‧‧ Slider

33‧‧‧ neck

34‧‧‧ recess

35‧‧‧Abutment

41‧‧‧Flexible parts

42‧‧‧ hub

43‧‧‧Limited teeth

421‧‧‧First connector

422‧‧‧Second connector

423‧‧‧ head

4211‧‧‧ rods

4212‧‧‧ Groove

4221‧‧‧ kit

4222‧‧‧ convex

431‧‧‧Slope section

A‧‧‧first width

B‧‧‧second width

1 is a perspective view of a preferred embodiment of the present invention. 2 is an exploded view of a preferred embodiment of the present invention. Figure 3 is a partial enlarged view of a preferred embodiment of the present invention. 4 is a partial front elevational view of a preferred embodiment of the present invention. Figure 5 is another partial enlarged view of a preferred embodiment of the present invention. Figure 6 is a schematic view of the operation of a preferred embodiment of the present invention. 7 to 9 are front views of operations in accordance with a preferred embodiment of the present invention. 10 and 11 are cross-sectional views showing the operation of the A-A end face of Fig. 9. 10A and 11A are partial enlarged views of Figs. 10 and 11, respectively. Figure 12 is a side elevational view of another preferred embodiment of the present invention. 13 and FIG. 14 are cross-sectional views showing the operation of the end face B-B of FIG. 13A and 14A are partial enlarged views of Figs. 13 and 14, respectively. Figure 15 is an exploded view of another preferred embodiment of the present invention.

Claims (11)

A water pipe clamp includes: a first caliper body including a first handle portion, a first clamping portion, and a body connected between the first handle portion and the first clamping portion, The body includes two opposite side plates and is provided with two guiding slots, and a slot is formed between the two side plates, and a sliding slot is respectively recessed on one side of the two side plates, and the two sliding slots are coupled with the two guiding slots Parallel and non-overlapping; a driving handle, and the first caliper body is pivotally disposed on a pivot portion, the pivot portion is slidably disposed in the two guiding gullets, and one end of the driving handle is provided with a second grip portion The other end is provided with a cam; a clamping member includes a second clamping portion and a slider connected to the slot, the slider is located in the receiving slot and is slidably disposed on the two sliding slots, the second clamping With respect to the first clamping portion, the clamping member is provided with a recess, the cam is rotatably inserted into the recess, and the driving handle is slid or pivoted relative to the first caliper body, the cam The sliding member can be controlled to slide relative to the first caliper body; wherein the pivot portion comprises an elastic member and a hinge, and the driving handle is provided with a pivot a hole, the hinge is provided with at least one limiting tooth portion, the pivoting portion is disposed in the pivot hole and axially slidable in a locking position and a releasing position, and the elastic member is elastically biased against the baffle of the pivot hole Locking with the hub to move the hub normally toward the locked position; wherein, when the hub is in the locked position, the at least one limiting tooth is engaged with the two guiding slots, the driving handle That is, the sliding can not be slid relative to the two guiding slots; when the pivoting is moved to the releasing position, the at least one limiting tooth is disengaged from the two guiding slots, and the driving handle can slide relative to the two guiding slots shift. Wherein, the hub includes a first connecting member and a second connecting member, the first connecting member is provided with a rod, the second connecting member is provided with a sleeve, the kit is sleeved on the rod, the first connection And the second connecting member is respectively provided with the limiting tooth portion. The water pipe clamp of claim 1, wherein the hinge is provided with two limiting tooth portions, wherein the two limiting tooth portions respectively correspond to a guiding tooth groove, and when the hinge is located at the locking position, each of the limits The positioning tooth portion is engaged with a guiding tooth groove, and each of the limiting tooth portions is provided with a slope portion along one side of the axial direction of the pivot portion, and when the hinge is moved to the release position, each of the limiting tooth portions The beveled section is oriented toward the corresponding one of the guide slots. The water pipe clamp according to claim 1, wherein a neck portion is further disposed between the second clamping portion and the sliding block, and the two side plates are respectively provided with a flange parallel to the direction of the two sliding grooves, the neck The system is located in the two side plates and is slidingly embedded in the two flanges. The water pipe clamp according to claim 3, wherein the slider cross section of the clamping member is a rectangular shape. The water pipe clamp according to claim 3, wherein the slider has a circular cross section. The water pipe clamp of claim 3, wherein the second clamping portion forms an abutting surface adjacent to the end surface of the neck, the abutting surface abutting against the sliding surface above the two side plates. The water pipe clamp according to claim 3, wherein the maximum width of the second clamping portion defines a first width along the axial direction, and the maximum width of the slider defines a second width, the first width and The ratio of the second width is between 0.75 and 0.32. The water pipe clamp according to claim 2, wherein a neck portion is further disposed between the second clamping portion and the sliding block, and the two side plates are respectively provided with a flange parallel to the direction of the two sliding grooves, the neck The second side plate is located on the two side plates and is embedded in the two flanges; the second clamping portion forms an abutting surface adjacent to the end surface of the neck portion, the abutting surface is abutting against the sliding surface above the two side plates; The maximum width of the second clamping portion defines a first width, the maximum width of the slider defines a second width, and the ratio of the first width to the second width is 0.65; The recess is disposed on the slider, and the recess is a concave curved surface, and the cam system is rotatable within the recess along an axial direction of the pivot. The water pipe clamp of claim 1, wherein the recess is attached to the slider, the recess is a concave curved surface, and the cam system is rotatable within the recess along an axial direction of the pivot. The water pipe clamp according to claim 1, wherein the rod member is provided with a groove facing one end of the sleeve, and a bottom portion of the sleeve is provided with a convex portion that is engaged with the groove, and the sleeve is sleeved in a tight fit manner. Set on the rod. The water pipe clamp according to claim 1, wherein the first connecting member and the second connecting member are respectively disposed at a distance away from one end of the first connecting member, and a radial diameter of the two head portions is larger than the two guiding portions. The width of the gullet.