clamp

Abstract

This invention relates to a pair of pliers, comprising a first component, a second component, and a control assembly. The first component includes a first grip, a first body, and a first jaw. The first body includes a working surface, a guide groove, and at least one set of teeth. The guide groove is recessed in the working surface, and the at least one set of teeth is disposed on the working surface and arranged along the extending direction of the guide groove. The second component includes a second grip, a second body, and a second jaw. The second body has a pivot hole. The control assembly includes a positioning pivot and an operating component. The positioning pivot movably passes through the pivot hole and extends into the guide groove. The positioning pivot has at least one locking tooth. The operating component is pivotally connected to the second body, and the positioning pivot and the operating component are linked.

Description

TECHNICAL FIELD

[0001] The present invention relates to pliers. BACKGROUND

[0002] Generally, conventional pliers are composed of two plier bodies which are pivotally connected to each other. Some pliers, such as water pipe pliers, have a sliding slot formed in one of the plier bodies so that the two plier bodies can slide relative to each other to adjust the size of the clamping jaw. In order to effectively maintain the size of the clamping jaw, various positioning methods have been developed, such as having a plurality of recesses in the radial direction of the sliding slot to allow the pivot shaft to be inserted into the recesses for positioning, using a spring to radially pull the pivot shaft, adding a stop positioning spring between the pivot shaft and the gear rack, axially pressing the pivot shaft to be misaligned with the gear rack, and the like.

[0003] However, the above-mentioned positioning structures have various disadvantages, such as too many components, difficult assembly, not intuitive and not convenient for positioning release, short service life, and the like. Therefore, it is necessary to provide a novel and improved plier to solve the above-mentioned problems. SUMMARY

[0004] The main purpose of the present invention is to provide a plier which can quickly move the positioning pivot by moving the control member, thereby achieving the purpose of quickly connecting or releasing the second member by the first member.

[0005] To achieve the above object, the present application provides a pliers, comprising a first member, a second member and a control assembly. The first member comprises a first handle, a first body and a first jaw connected in sequence, the first body comprises a working surface, a guide slot and at least one tooth row, the guide slot is recessed in the working surface, the at least one tooth row is arranged on the working surface and arranged along the extension direction of the guide slot; the second member comprises a second handle, a second body and a second jaw connected in sequence, the second body penetrates a pivot hole; the control assembly comprises a positioning pivot and an operating member, the positioning pivot movably penetrates the pivot hole and extends into the guide slot, so that the positioning pivot connects the first member and the second member, at least one clamping tooth part is arranged on the positioning pivot, the at least one clamping tooth part faces the working surface and can be engaged with the at least one tooth row to position, the operating member is pivoted to the second body, the operating member comprises a first end and a second end, the positioning pivot and the first end are in linkage relationship, the second end is operated by the outside to drive the first end and the positioning pivot to move; wherein the positioning pivot further comprises a head part, a neck part, a third body and a penetrating part, the neck part and the penetrating part are respectively protruded on the opposite sides of the third body, the penetrating part penetrates the second body and extends into the guide slot, the head part is arranged on the neck part and protrudes transversely from the neck part, the at least one clamping tooth part is arranged on the third body, the first end is hooked on the head part, so that the operating member and the positioning pivot are in linkage relationship; wherein the operating member comprises a sleeve hole and a protruding rib arranged on the first end, the protruding rib protrudes transversely from the sleeve hole, the head part and the neck part are inserted into the sleeve hole, the protruding rib is clamped between the head part and the neck part, so that on the swing path of the first end, the protruding rib and the head part are in interference state, the sleeve hole is a straight slot, the protruding rib exposed in the sleeve hole is semicircular in shape, in the long axis direction of the sleeve hole, the protruding rib does not exceed half of the sleeve hole, the protruding rib surrounds a semicircular hole, the semicircular hole is located in the sleeve hole, the sleeve hole comprises two circular arc segments and two straight line segments, the two circular arc segments are respectively connected to the opposite ends of the two straight line segments, the semicircular hole is concentric with the circular arc segment.

[0006] As a preferred solution of the above technical scheme, preferably, the second body comprises a first part and a second part, the second part is connected to the first part and defines a penetrating space with the first part together, and the first body movably penetrates the penetrating space.

[0007] As a preferred solution of the above technical scheme, preferably, the first part penetrates a containing groove, the containing groove communicates the penetrating space and the pivot hole, and the operating member is pivotally contained in the containing groove.

[0008] As a preferred solution of the above technical scheme, preferably, the guide slot is a straight slot, the guide slot comprises a first end and a second end opposite to each other, the distance between the first end and the second end is defined as a first length, the first end of the operation member is closer to the second jaw, the second end of the operation member is closer to the second handle, in the extension direction of the guide slot, the length of the operation member is defined as a second length, and the second length is greater than half of the first length.

[0009] As a preferred solution of the above technical scheme, preferably, the first component is bent to form the through space, the second jaw is provided with a first fitting part, the second handle is provided with a second fitting part, and the two ends of the second component are embedded in the first fitting part and the second fitting part to cover the first component.

[0010] As a preferred solution of the above technical scheme, preferably, the first component comprises a first face, a second face and a third face, the first face faces the working surface, the second face is connected transversely between the first face and the first fitting part, and the third face is connected transversely between the first face and the second fitting part; wherein the second face is an abutting face, and when the second member pivots relative to the first member to make the first jaw and the second jaw pivot away from or close to each other, the two ends of the second face can abut laterally on the first body, respectively.

[0011] As a preferred solution of the above technical scheme, preferably, the teeth of the at least one tooth row are unidirectional teeth, and the teeth of the at least one clamping tooth part are matched with the teeth of the at least one tooth row.

[0012] As a preferred solution of the above technical scheme, preferably, the control assembly further comprises a resilient member, the resilient member is resiliently arranged between the second end and the second body, the resilient member provides elastic force to the second end to drive the first end to press against the positioning pivot member, so that the at least one clamping tooth part is kept engaged with the at least one tooth row.

[0013] As the preferred technical scheme of the above-mentioned technical scheme, preferably, the second component is in a plate shape, the second component comprises a first flat portion, a bending portion and a second flat portion, the bending portion is connected between the first flat portion and the second flat portion, and the bending portion is used to laterally stop and limit the first body portion; the head portion, the neck portion, the third body portion, the penetrating portion and the at least one clamping tooth portion are integrally formed; the control assembly further comprises a resilient member, the resilient member is elastically abutted between the second end and the second body portion, the resilient member provides elastic force to the second end, drives the first end to be normally pressed against the positioning pivot member, and makes the at least one clamping tooth portion keep engaged with the at least one tooth row; the number of the at least one tooth row is two, the two tooth rows are respectively arranged on opposite sides of the guide groove, the number of the at least one clamping tooth portion is two, and the two clamping tooth portions respectively correspond to the two tooth rows; the outer contour of the first end is in a circular shape, and the outer contour of the second end is in an oblong shape; the first component is bent to form the penetrating space, the second jaw portion is provided with a first embedding portion, the second handle portion is provided with a second embedding portion, and the two ends of the second component are embedded in the first embedding portion and the second embedding portion to cover the first component; the first component comprises a first face portion, a second face portion and a third face portion, the first face portion faces the working surface, the second face portion is transversely connected between the first face portion and the first embedding portion, and the third face portion is transversely connected between the first face portion and the second embedding portion; wherein, the second face portion is an abutting face, when the second member is pivoted relative to the first member to make the first jaw portion and the second jaw portion pivot away from or close to each other, the two opposite ends of the second face portion can be respectively laterally abutted on the first body portion; the first component further comprises a supporting portion, the supporting portion is located in the accommodating groove and close to the pivot hole, and the supporting portion is used to limit the maximum swing amplitude of the second end close to the at least one tooth row; the supporting portion is in a plate shape. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0015] Figure 1 It is a perspective view of an embodiment of the present application.

[0016] Figure 2 It is an exploded view of Figure 1 .

[0017] Figure 3 It is another view of Figure 2 .

[0018] Figure 4A front view of the control of an embodiment of the present application.

[0019] Figure 5 And Figure 6 An action diagram of the control and the positioning pivot of an embodiment of the present application.

[0020] Figure 7 A partial sectional enlarged view of an embodiment of the present application.

[0021] Figure 8 And Figure 9 An action diagram of the first jaw and the second jaw relative opening and closing of an embodiment of the present application.

[0022] Figure 10 A comparison diagram of the first member and the operating member of an embodiment of the present application.

[0023] Wherein, 1: the first member; 11: the first grip; 12: the first body; 13: the working surface; 14: the guide groove; 141: the first terminal end; 142: the second terminal end; 15: the tooth row; 16: the first jaw; 2: the second member; 21: the second grip; 22: the second body; 23: the pivot hole; 24: the first part; 241: the first surface; 242: the second surface; 243: the third surface; 25: the containing groove; 26: the supporting part; 27: the second part; 271: the first flat part; 272: the bent part; 273: the second flat part; 28: the penetrating space; 29: the second jaw; 3: the control assembly; 31: the positioning pivot; 311: the head; 312: the neck; 313: the third body; 314: the penetrating part; 32: the clamping tooth part; 33: the operating member; 331: the first end; 332: the second end; 333: the sleeve hole; 334: the circular arc segment; 335: the straight line segment; 336: the convex rib; 337: the semicircular hole; 34: the elastic member; 41: the first fitting part; 42: the second fitting part; 51: the first length; 52: the second length. DETAILED DESCRIPTION

[0024] To make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

[0025] Please refer to Figures 1 to 10 which shows an embodiment of the present application, and the pliers of the present application include a first member 1, a second member 2 and a control assembly 3.

[0026] The first member 1 comprises a first grip portion 11, a first body portion 12 and a first jaw portion 16 connected in sequence, the first body portion 12 comprises a working surface 13, a guide slot 14 and at least one tooth row 15, the guide slot 14 is recessed in the working surface 13, the at least one tooth row 15 is arranged on the working surface 13 and along the extension direction of the guide slot 14. The second member 2 comprises a second grip portion 21, a second body portion 22 and a second jaw portion 29 connected in sequence, the second body portion 22 penetrates a pivot hole 23.

[0027] The control assembly 3 comprises a positioning pivot member 31 and an operating member 33, the positioning pivot member 31 is movably penetrated through the pivot hole 23 and extends into the guide slot 14, so that the positioning pivot member 31 connects the first member 1 and the second member 2, at least one clamping tooth portion 32 is arranged on the positioning pivot member 31, the at least one clamping tooth portion 32 faces the working surface 13 and can be engaged with the at least one tooth row 15 for positioning, in the embodiment, the number of the at least one tooth row 15 is two, the two tooth rows 15 are arranged on opposite sides of the guide slot 14 to uniformly provide engagement positioning capability, the tooth portion of each tooth row 15 is a one-way tooth, the number of the at least one clamping tooth portion 32 is two, the two clamping tooth portions 32 correspond to the two tooth rows 15 respectively, the tooth portion of the two clamping tooth portions 32 matches the tooth portion of the two tooth rows 15.

[0028] The operating member 33 is pivotally connected to the second body portion 22 and can swing relative to the second body portion 22 like a seesaw, the operating member 33 comprises a first end 331 and a second end 332, the positioning pivot member 31 and the first end 331 are in linkage relationship, in the embodiment, part of the positioning pivot member 31 interferingly locates on the swing path of the first end 331, the second end 332 is used for external operation to drive the first end 331 and the positioning pivot member 31 to move. When the positioning pivot member 31 is driven by the operating member 33 to swing away, the two clamping tooth portions 32 are disengaged from the two tooth rows 15, the first member 1 can slide relative to the second member 2 to adjust the size of the clamping opening of the first jaw portion 16 and the second jaw portion 29; wherein the outer contour of the first end 331 is circular, the outer contour of the second end 332 is long oval.

[0029] The guide groove 14 is a straight narrow groove, which includes a first end 141 and a second end 142. The distance between the first end 141 and the second end 142 is defined as a first length 51. The first end 331 of the operating member 33 is closer to the second jaw 29, and the second end 332 of the operating member 33 is closer to the second grip 21. In the extension direction of the guide groove 14, the length of the operating member 33 is defined as a second length 52, which is greater than half of the first length 51. In this way, the operating member 33 has a sufficient length to allow the second end 332 to extend closer to the second grip 21, so that the user can quickly press and control it with the fingers of the same hand when gripping it.

[0030] The second body 22 includes a first component 24 and a second component 27. The second component 27 is assembled to the first component 24 and together with the first component 24 defines a passage space 28. The combined structure of the first component 24 and the second component 27 is beneficial for the first body 12 to be movably passed through the passage space 28.

[0031] More specifically, the first component 24 is bent to form the passage space 28, the second jaw 29 is provided with a first fitting portion 41, the second grip portion 21 is provided with a second fitting portion 42, and the two ends of the second component 27 are embedded in the first fitting portion 41 and the second fitting portion 42 to cover the first component 24; wherein, the second component 27 is plate-shaped, and the second component 27 includes a first flat portion 271, a bent portion 272 and a second flat portion 273, the bent portion 272 is connected between the first flat portion 271 and the second flat portion 273, and the bent portion 272 is used to laterally stop and limit the first body portion 12.

[0032] More specifically, the first component 24 includes a first face 241, a second face 242, and a third face 243. The first face 241 faces the working surface 13. The second face 242 is laterally connected between the first face 241 and the first fitting portion 41. The third face 243 is laterally connected between the first face 241 and the second fitting portion 42. The second face 242 serves as a contact surface to control the angle of the opening. When the second component 2 pivots relative to the first component 1, causing the first jaw portion 16 and the second jaw portion 29 to pivot away from or towards each other, the opposite ends of the second face 242 can respectively laterally abut against the first body portion 12. In other words, the contour of the second face 242 can be used to determine the pivot amplitude of the second component 2, thereby affecting the control of the opening angle of the first jaw portion 16 and the second jaw portion 29. In this embodiment, the second face 242 is a curved surface; in other embodiments, it can be a flat surface.

[0033] Preferably, the first component 24 is provided with a receiving groove 25, which connects the through space 28 and the pivot hole 23. The operating member 33 is pivotally received in the receiving groove 25, thereby the first component 24 can protect the operating member 33 from direct collision with external objects.

[0034] Alternatively, the control component 3 further includes an elastic element 34 that springs against the second end 332 and the second body 22. The elastic element 34 provides elastic force to the second end 332, causing the first end 331 to normally press against the positioning pivot 31, thus keeping the two locking teeth 32 engaged with the two tooth rows 15. This improves the relative stability of the engagement between the first component 1 and the second component 2, ensuring that they do not arbitrarily slip relative to each other. Furthermore, by keeping the second end 332 in a normally raised state, when adjusting the jaw opening size, the user only needs to press to quickly move the two locking teeth 32 on the positioning pivot 31 away from the two tooth rows 15, which is quite convenient. In addition, since the second end 332 is adjacent to the second grip 21, in actual use, the operator can release the grip by pressing the second end 332 with their thumb while holding the second grip 21.

[0035] In another preferred embodiment, the first component 24 further includes a support portion 26 located in the receiving groove 25 and near the pivot hole 23. The support portion 26 limits the maximum swing amplitude of the second end 332 as it approaches the two tooth rows 15, thereby further ensuring that the two locking teeth 32 do not strike the two tooth rows 15, ensuring the structural integrity of both. In this embodiment, the support portion 26 is plate-shaped to provide a larger contact area for more even force distribution.

[0036] The positioning pivot 31 further includes a head 311, a neck 312, a third body 313, and an insertion part 314. The neck 312 and the insertion part 314 protrude from opposite sides of the third body 313, respectively. The insertion part 314 passes through the second body 22 and extends into the guide groove 14. The head 311 is located on the neck 312 and protrudes laterally from the neck 312. Two locking teeth 32 are located on opposite sides of the third body 313. The first end 331 hooks onto the head 311, thereby making the operating member 33 and the positioning pivot 31 move in a linked relationship. More specifically, the operating member 33 includes a socket 333 and a rib 336 located at the first end 331. The rib 336 protrudes laterally from the socket 333. The head 311 and the neck 312 are inserted into the socket 333. The rib 336 is engaged between the head 311 and the neck 312. Thus, in the swing path of the first end 331, the rib 336 interferes with the head 311. The rib 336 can provide a pulling force to the head 311.

[0037] Preferably, the head 311, the neck 312, the third body 313, the insertion part 314 and the at least one locking tooth part 32 are integrally formed, so that the positioning pivot 31 has a continuous structure and better structural strength, and can reduce the number of components and simplify the assembly steps.

[0038] In this embodiment, the socket 333 is a straight slot, and the protruding rib 336 exposed in the socket 333 is semi-annular in shape. Along the long axis of the socket 333, the protruding rib 336 does not extend beyond half of the socket 333, facilitating smooth insertion of the head 311 into the socket 333 during assembly. Furthermore, the protruding rib 336 forms a semi-circular hole 337 located within the socket 333. The socket 333 includes two arc segments 334 and two straight segments 335. The two arc segments 334 are respectively connected to opposite ends of the two straight segments 335. Preferably, the semi-circular hole 337 is concentric with the arc segments 334, facilitating the determination of the swing amplitude and the relative positional alignment of the parts.

[0039] It should be further explained that the linkage relationship between the first end 331 and the positioning pivot 31 is not limited to the above-described manner. In other embodiments, a magnetic linkage method can be used to achieve the purpose of connection and movement. For example, but not limited to, the positioning pivot is made of a magnetically attractive material, with a magnet provided at the first end, or the magnets are arranged in opposite directions, or both are equipped with magnets and attract each other.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. Pliers, characterized in that The utility model relates to a first component, a second component and a control assembly. The first component comprises a first grip, a first body and a first jaw connected in sequence, the first body comprises a working surface, a guide groove and at least one tooth row, the guide groove is recessed in the working surface, and the at least one tooth row is arranged on the working surface and arranged along the extension direction of the guide groove. The second component comprises a second grip, a second body and a second jaw connected in sequence, and the second body is provided with a pivot hole. The control assembly comprises a positioning pivot and an operating member, the positioning pivot is movably provided through the pivot hole and extends into the guide groove, thereby connecting the first component and the second component, at least one clamping tooth part is arranged on the positioning pivot, the at least one clamping tooth part faces the working surface and can be engaged with the at least one tooth row, the operating member is pivotally connected to the second body, the operating member comprises a first end and a second end, the positioning pivot and the first end are in linkage, and the second end is used for external operation to drive the first end and the positioning pivot to move. The positioning pivot further comprises a head, a neck, a third body and a penetrating part, the neck and the penetrating part are respectively protruded on the opposite sides of the third body, the penetrating part extends into the guide groove through the second body, the head is arranged on the neck and protrudes transversely from the neck, the at least one clamping tooth part is arranged on the third body, and the first end is hooked on the head, thereby making the operating member and the positioning pivot in linkage. The operating member comprises a sleeve hole and a protruding rib arranged on the first end, the protruding rib protrudes transversely from the sleeve hole, the head and the neck are inserted into the sleeve hole, the protruding rib is clamped between the head and the neck, thereby being in interference with the head on the swing path of the first end, the sleeve hole is a straight slot, the protruding rib exposed in the sleeve hole is semicircular, the protruding rib does not exceed half of the sleeve hole in the long axis direction of the sleeve hole, the protruding rib surrounds a semicircular hole, the semicircular hole is located in the sleeve hole, the sleeve hole comprises two circular arc segments and two straight line segments, the two circular arc segments are respectively connected to the opposite ends of the two straight line segments, and the semicircular hole is concentric with the circular arc segment.

2. The forceps according to claim 1, wherein The second body comprises a first part and a second part, the second part is connected to the first part and jointly defines a penetrating space with the first part, and the first body is movably penetrated through the penetrating space.

3. The forceps according to claim 2, wherein, The first part is provided with a containing groove, the containing groove is communicated with the penetrating space and the pivot hole, and the operating member is pivotally arranged in the containing groove.

4. The forceps according to claim 1, wherein The guide groove is a straight slot, the guide groove comprises a first terminal end and a second terminal end opposite to each other, the distance from the first terminal end to the second terminal end defines a first length, the first end of the operating member is closer to the second jaw, the second end of the operating member is closer to the second grip, the length of the operating member in the extension direction of the guide groove defines a second length, and the second length is greater than half of the first length.

5. The forceps according to claim 2, wherein, The first component is bent to form the penetrating space, the second jaw is provided with a first engaging portion, the second handle is provided with a second engaging portion, and the two ends of the second component are embedded in the first engaging portion and the second engaging portion to cover the first component.

6. The forceps according to claim 5, wherein, The first component comprises a first face, a second face and a third face, the first face faces the working surface, the second face is transversely connected between the first face and the first engaging portion, and the third face is transversely connected between the first face and the second engaging portion; wherein the second face is an abutting face, and when the second component pivots relative to the first component to make the first jaw and the second jaw pivot away from or close to each other, the opposite two ends of the second face can respectively abut laterally against the first body.

7. The forceps according to claim 1, wherein The teeth of the at least one tooth row are unidirectional teeth, and the teeth of the at least one clamping tooth row are matched with the teeth of the at least one tooth row.

8. The forceps according to any one of claims 1 to 7, wherein, The control assembly further comprises a resilient member which is resiliently arranged between the second end and the second body, and provides elastic force to the second end to drive the first end to normally press against the positioning pivot, so that the at least one clamping tooth row is kept engaged with the at least one tooth row.

9. The forceps according to claim 3, wherein, The second component is plate-shaped, and comprises a first flat portion, a bent portion and a second flat portion, the bent portion is connected between the first flat portion and the second flat portion, and is used to laterally stop the first body; the head, the neck, the third body, the penetrating portion and the at least one clamping tooth row are integrally formed; the control assembly further comprises a resilient member which is resiliently arranged between the second end and the second body, and provides elastic force to the second end to drive the first end to normally press against the positioning pivot, so that the at least one clamping tooth row is kept engaged with the at least one tooth row; the number of the at least one tooth row is two, and the two tooth rows are arranged on opposite sides of the guide groove; the number of the at least one clamping tooth row is two, and the two clamping tooth rows correspond to the two tooth rows respectively; the outer contour of the first end is circular, and the outer contour of the second end is long-elliptical; the first component is bent to form the penetrating space, the second jaw is provided with a first engaging portion, the second handle is provided with a second engaging portion, and the two ends of the second component are embedded in the first engaging portion and the second engaging portion to cover the first component; the first component comprises a first face, a second face and a third face, the first face faces the working surface, the second face is transversely connected between the first face and the first engaging portion, and the third face is transversely connected between the first face and the second engaging portion; wherein the second face is an abutting face, and when the second component pivots relative to the first component to make the first jaw and the second jaw pivot away from or close to each other, the opposite two ends of the second face can respectively abut laterally against the first body; the first component further comprises a support portion which is located in the accommodating groove and close to the pivot hole, and is used to limit the maximum swing amplitude of the second end towards the at least one tooth row; the support portion is plate-shaped.

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