Hardware tool and working assembly thereof

Abstract

The utility model provides a hardware tool and a working assembly thereof. The hardware tool comprises a handle assembly and the working assembly. The handle assembly comprises a first handle and a second handle which are connected through a first hinge structure. The working assembly comprises a first working part and a second working part which are connected through a second hinge structure, the first working part comprises a first working part, a first arm part and a first hinge part between the first working part and the first arm part, and the second working part comprises a second working part, a second arm part and a second hinge part between the second working part and the second arm part; the first hinge part and the second hinge part are hinged to form a second hinge structure; wherein the working assembly is detachably connected to the ends, provided with the first hinge structure, of the first handle and the second handle, and the first arm part and the second arm part can be driven by the first handle and the second handle so that the first working part and the second working part can rotate around the center line limited by the second hinge structure to be closed.

Description

Technical Field

[0001] The present disclosure belongs to the technical field of hardware tools, and in particular relates to a hardware tool and a working component thereof. Background Art

[0002] Hardware tools like pliers and scissors have a working part: the jaws and the shears. The jaws can grip, shear, or bend workpieces, while the shears can cut. The working part is subject to significant stress and can therefore wear out or become damaged over time. Because the working part and handle of pliers and scissors are integrated, damage to the working part requires the entire pair of pliers or scissors to be scrapped. Utility Model Content

[0003] The present disclosure aims to provide a hardware tool with a detachable and replaceable working part.

[0004] In a first aspect, a hardware tool is provided, comprising a handle assembly and a working assembly. The handle assembly comprises a first handle and a second handle connected by a first hinge structure; the working assembly comprises a first working member and a second working member connected by a second hinge structure, the first working member comprising a first working portion, a first arm, and a first hinge portion therebetween; the second working member comprising a second working portion, a second arm, and a second hinge portion therebetween, the first hinge portion and the second hinge portion being hingedly connected to form a second hinge structure; wherein the working assembly is detachably connected to one end of the first handle and the second handle where the first hinge structure is provided, and the first arm and the second arm can be driven by the first handle and the second handle to rotate the first working member and the second working member about a centerline defined by the second hinge structure to close.

[0005] In one possible implementation, the working assembly is detachably clamped between the first handle and the second handle by the first arm and the second arm, and the first arm and the second arm can be driven by the first handle and the second handle to rotate the first working part and the second working part around the center line defined by the second hinge structure and close.

[0006] In combination with the above possible implementations, in another possible implementation, the center line of the first hinge structure is collinear with the center line of the second hinge structure, and / or the end of the first handle and the end of the second handle are connected to form a first hinge structure connection.

[0007] In combination with the above possible implementations, in another possible implementation, the first hinge structure includes an upper hinge structure and a lower hinge structure spaced apart in the length direction of the center line defined by the first hinge structure, and the working assembly is located between the upper hinge structure and the lower hinge structure.

[0008] In combination with the above possible implementation methods, in another possible implementation method, the ends of the first handle and the second handle each include an upper baffle and a lower baffle that are spaced apart, the upper baffle of the first handle and the upper baffle of the second handle are hinged to form an upper hinged structure, and the lower baffle of the first handle and the lower baffle of the second handle are hinged to form a lower hinged structure.

[0009] In combination with the above possible implementation manner, in another possible implementation manner, the first arm portion is located between the upper baffle and the lower baffle of the first handle, and the second arm portion is located between the upper baffle and the lower baffle of the first handle.

[0010] In combination with the above possible implementation methods, in another possible implementation method, the first handle and the second handle are provided with a first driving part and a second driving part at a predetermined distance from the first hinge structure, and the first driving part and the second driving part respectively form an interlocking fit with the first arm part and the second arm part in the opening and closing direction.

[0011] In combination with the above possible implementation manner, in another possible implementation manner, the first driving portion and the second driving portion are protrusions, and the first arm portion and the second arm portion are provided with recesses that cooperate with the protrusions.

[0012] In combination with the foregoing possible implementation manner, in another possible implementation manner, a center line of the first hinge structure and a center line of the second hinge structure have a predetermined distance.

[0013] In combination with the above possible implementation manner, in another possible implementation manner, the first hinge structure is connected via a hinge shaft, and the hinge shaft passes between the first arm portion and the second arm portion of the working assembly.

[0014] In combination with the above possible implementation methods, in another possible implementation method, an annular groove and a return spring are provided between the first working piece and the interior of the second working piece. The annular groove is coaxial with the second hinge structure. The return spring is provided in the annular groove. The return spring is used to keep the working component in an open state.

[0015] In a second aspect, a working assembly is provided, which includes a first working piece and a second working piece connected by a second hinge structure, the first working piece includes a first working part, a first arm and a first hinge part therebetween, the second working piece includes a second working part, a second arm and a second hinge part therebetween, the first hinge part and the second hinge part are hingedly connected to form a second hinge structure; wherein the working assembly is used to be detachably connected to one end of a first hinge structure provided with a pair of hinged handles, and the first arm and the second arm can be driven by a pair of hinged handles to make the first working part and the second working part rotate around the center line defined by the second hinge structure and close.

[0016] The hardware tool provided according to the present disclosure includes a handle assembly and a working assembly detachably connected to the handle assembly. The working assembly can be removed from the handle assembly after being worn or damaged, so that the handle assembly can be replaced with a new working assembly, so that the original handle assembly can continue to be used, reducing waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 A schematic diagram of a hardware tool provided according to one embodiment of the present disclosure.

[0019] Figure 2 for Figure 1 Schematic diagram of the hardware tool's working component and handle component separated.

[0020] Figure 3 It is a cross-sectional view of the working component and the handle component separated.

[0021] Figure 4 Exploded view of the working assembly.

[0022] Figure 5 This is an exploded view of the handle assembly.

[0023] Figure 6 Schematic diagram of the structure of replaceable head pliers according to another embodiment.

[0024] Figure 7 for Figure 6 Exploded view of the interchangeable tip pliers.

[0025] Figure 8 for Figure 6 Cross-sectional view of the interchangeable head pliers.

[0026] Figure 9 This is a schematic structural diagram of the first working piece in the working assembly.

[0027] Figure 10 Schematic diagram of the structure of the second working piece. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present disclosure without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0029] The features and exemplary embodiments of various aspects of the present disclosure will be described in detail below. In the detailed description below, many specific details are proposed in order to provide a comprehensive understanding of the present disclosure. However, it will be apparent to those skilled in the art that the present disclosure can be implemented without the need for some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present disclosure by illustrating examples of the present disclosure. The present disclosure is in no way limited to any specific structure and configuration proposed below, but rather covers any modification, replacement and improvement of parts, components and connection modes without departing from the spirit of the present disclosure. In the accompanying drawings and the following description, well-known structures and technologies are not shown in order to avoid unnecessary ambiguity in the present disclosure.

[0030] Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.In the following description, numerous specific details are provided to give a thorough understanding of the embodiments of the present disclosure.

[0031] refer to Figures 1 to 5 , Figure 1 This is a schematic diagram of a hardware tool provided according to one embodiment of the present disclosure, specifically a pair of pliers. Figure 2 for Figure 1 Schematic diagram of the hardware tool's working component and handle component separated. Figure 3 It is a cross-sectional view of the working component and the handle component separated. Figure 4 Exploded view of the working assembly. Figure 5 This is an exploded view of the handle assembly.

[0032] The present invention discloses a pair of pliers, which includes a handle assembly 100, a working assembly 200 and a support member 300. The handle assembly 100 and the working assembly 200 are detachably assembled into one body, and the handle assembly 100 is used to drive the working assembly 200 to close. In this embodiment, the working assembly 200 is a pliers jaw assembly, including two hinged pliers jaws, so that it can clamp, shear or bend a workpiece. The support member 300 can keep the pliers jaws open. The handle assembly 100 includes two hinged handles. When the handles are close to each other, they can overcome the resistance of the support member 300 and close the pliers jaws. The working assembly 200 can be removed from the handle assembly 100 as a whole, so that the working assembly 200 can be replaced with a new one after being worn, so that the handle assembly 100 can be continuously used.

[0033] The handle assembly 100 includes a first handle 110 and a second handle 120 connected by a first hinge structure 130. The first hinge structure 130 includes an upper hinge portion 131 and a lower hinge portion 132, with an accommodating space formed therebetween.

[0034] The main body of the first handle 110 comprises a first end 111 and a second end 112, with the first end 111 being hingedly connected to the second handle 120. The main body of the second handle 120 comprises a first end 121 and a second end 122, with the first end 121 being hingedly connected to the first end 111 of the first handle 110. The first end 111 comprises an upper baffle 113 and a lower baffle 114, both of which have the same length as the length of the first handle 110 and are parallel to each other and spaced apart radially in the first handle 110. In a specific implementation, the two baffles can be welded to the ends of the handle or slotted into the ends of the handle to form two spaced-apart baffles. The first end 121 of the second handle 120 also comprises an upper baffle 123 and a lower baffle 124. The first end 111 and the first end 121 are hingedly connected: the upper baffle 113 and the upper baffle 123 are hingedly connected to form an upper hinge portion 131, and the lower baffle 114 and the lower baffle 124 are hingedly connected to form a lower hinge portion 132. The upper baffle 113 includes a circular baffle at the distal end and a rectangular baffle located between the circular baffle and the main body of the first handle 110. The lower baffle 114 is substantially identical in shape to the upper baffle 113. The upper baffle 123 of the second handle 120 has the same construction as the upper baffle 113. Both upper baffles 113 and 123 have central holes and are connected by anchors 117 to form an upper hinge 131. The lower baffle 124 and lower baffle 114 also have central holes and are connected by anchors 116 to form an upper hinge 132.

[0035] A lower hinge portion 132 is also formed between the lower baffles 114 and 124 through a similar structure as described above.

[0036] There is a certain space between the upper hinge portion 131 and the lower hinge portion 132 for accommodating the working assembly 200 .

[0037] The working assembly 200 includes a first working piece 210 and a second working piece 220. The first working piece 210 includes a first working portion 211, a first arm portion 212, and a first hinge portion 213. The first working portion 211 and the first arm portion 212 are distributed on both sides of the first hinge portion 213. The second working piece 220 includes a second working portion 221, a second arm portion 222, and a second hinge portion 223. The second working portion 221 and the second arm portion 222 are distributed on both sides of the second hinge portion 223. The first hinge portion 213 and the second hinge portion 223 form a second hinge structure 230. Specifically, the first hinge portion 213 is a hole, and the second hinge portion 223 has a pin shaft with a cap, and the two form a shaft-hole fit, and a copper pad 240 is sleeved between the two. The first working piece 210 and the second working piece 220 are hinged into one assembly through the second hinge structure 230. The first working portion 211 and the second working portion 221 form a pair of jaws that can be opened and closed via a second hinge structure 230. The reaction force of the workpiece clamped by the first and second working portions 211 and 221 on the jaws creates a resistance torque. The first arm 212 and the second arm 222 serve as driving force arms that receive force from the handle assembly 100, generating a driving torque that overcomes the resistance torque of the jaws. The length of the first arm 212 and the second arm 222 is much shorter than the length of the first handle 110 and the first working member 210. Therefore, the overall size of the working assembly 200 is relatively small, requiring less material. The support member 300 is a spring that supports the first arm 212 and the second arm 222 to maintain their open position.

[0038] When the working assembly 200 is mounted at the first hinge structure 130 of the handle assembly 100, the first arm 212 and the second arm 222 are clamped between the first handle 110 and the second handle 120 and can be driven to close as the first and second handles 110, 120 close, thereby simultaneously closing the jaws of the pliers. A connecting structure is provided between the first handle 110 and the first arm 212, as well as between the second handle 120 and the second arm 222, to limit relative sliding between the first handle 110 and the first arm 212, and between the second handle 120 and the second arm 222. A connecting structure is provided between the first handle 110 and the first arm 212, as well as between the second handle 120 and the second arm 222, to limit relative sliding between the first handle 110 and the first arm 212, and between the second handle 120 and the second arm 222. Furthermore, this connecting structure facilitates detachment of the working assembly 200 from the handle assembly 100, facilitating replacement of the working assembly 200.

[0039] In this embodiment, the first handle 110 is provided with a first driving portion 115, which is configured to engage with the second arm portion 222. The second handle 120 is provided with a second driving portion 125, which is configured to engage with the first arm portion 212. The first and second driving portions 115, 125 restrict movement of the first and second arms 212, 222 at least along the length of the first and second handles 110, 120, preventing the working assembly 200 from dislodging from the handle assembly 100 along the length of the first and second handles 110, 120 when the jaws are gripping a workpiece. Specifically, the first driving portion 215 is a pin, the axis of which is coaxial with the hinge portion 130. The first driving portion 215 is disposed between the upper and lower stop plates 113, 114. The second driving portion 225 is also a pin, the axis of which is coaxial with the hinge portion 130. The second driving portion 225 is disposed between the upper and lower stop plates 123, 124. When the working assembly 200 is installed in the handle assembly 100, the first arm 212 is clamped between the upper stop 113 and the lower stop 114 and located inside the first driving portion 115; the second arm 222 is clamped between the upper stop 123 and the lower stop 124 and located inside the second driving portion 125. When the first handle 110 and the second handle 120 are moved closer together around the first hinge structure 130, the first driving portion 115 and the second driving portion 125 clamp the first arm 212 and the second arm 222 to drive them closer together, causing the first working portion 211 and the second working portion 221 to engage.

[0040] In this embodiment, a recessed portion 214 is further provided on the outer side of the first arm 212, and a recessed portion 224 is provided on the outer side of the second arm 222. When the first driving portion 115 and the second driving portion 125 clamp the first arm 212 and the second arm 222, they will be embedded in the recessed portion 214 and the recessed portion 224 respectively, forming two interlocking structures, which can prevent the working component from escaping from the handle assembly. In addition, due to the action of the support member 300, the first arm 212 and the second arm 222 will remain in an open state when not clamped by the handle assembly so that the interlocking structure remains in an interlocking state. When it is necessary to remove the working component 200, the first handle 110 and the second handle 120 can be opened, and / or the first working portion 211 and the second working portion 221 can be closed to make the interlocking structures escaping from each other, so that the working component 200 can be removed from the handle assembly 100.

[0041] In this embodiment, the interlocking direction of the interlocking structure is in the width direction of the pliers. In some optional embodiments, the interlocking direction may also be in the thickness direction of the pliers. For example, holes may be provided in the first arm portion 212 and the second arm portion 222, with the axes of the holes being parallel to the center of the second hinge structure 230. Correspondingly, the first and second driving portions in the handle assembly 100 may be configured as pluggable pins or screws that can be screwed in and out, with the axes of the pins or screws being parallel to the center of the first hinge structure 130. In the above embodiment, the first and second driving portions are both structures for driving the first and second arms 212, 222 and connecting structures that prevent the working assembly 200 from being detached from the handle assembly 100. In some optional embodiments, the first drive unit and the second drive unit can also be used only to drive the first arm 212 and the second arm 222, and other structures are additionally provided to keep the working component 200 on the handle assembly 100, such as a magnetic structure, a pin or a screw structure and other retaining structures, which can be used only to prevent the working component 200 from detaching from the handle assembly 100 in the length direction, and do not participate in driving the first arm and the second arm closer to each other.

[0042] In some optional embodiments, the first working portion 211 and the second working portion 221 of the working assembly 200 may also be scissor blades.

[0043] In this embodiment, when the working assembly 200 is mounted on the handle assembly 100, the first hinge structure 130 and the second hinge structure 230 are coaxial. In some alternative embodiments, the first hinge structure 130 and the second hinge structure 230 may not be coaxial.

[0044] refer to Figures 6 to 10 , Figure 6 This is a schematic structural diagram of another embodiment of a replaceable head pliers. Figure 7 for Figure 6 Exploded view of the interchangeable head pliers. Figure 8 for Figure 6 Cross-sectional view of the interchangeable head pliers. Figure 9 is a structural diagram of the first working piece in the working assembly, Figure 10 The figure is a schematic structural diagram of the second working member. In one embodiment, the working assembly 200a is detachably mounted on the handle assembly 100a, and the second hinge structure 230a of the working assembly 200a is not coaxial with the first hinge structure 130a of the handle assembly 100a. The first hinge structure 130a is offset toward the handle relative to the second hinge structure 230a. Furthermore, the upper hinge portion 131a and the lower hinge portion 132a of the first hinge structure 130a can be connected by a hinge shaft 133a (which passes between the first arm portion 212a and the second arm portion 222a of the working assembly 200a), thereby improving the strength and stability of the hinge structure and reducing structural complexity.

[0045] Furthermore, the first handle 110a is provided with a first actuating portion 115a, which is configured to engage with the second arm portion 222a. The second handle 120a is provided with a second actuating portion 125a, which is configured to engage with the first arm portion 212a. The distance between the first hinge structure 130a and the first or second actuating portion 115a, 125a is smaller (relative to the pliers of the previous embodiment), which translates to a smaller resistance arm, thus reducing effort.

[0046] In addition, the size of the second hinge structure 230a is no longer limited in the axial direction by the upper hinge portion 131a and the lower hinge portion 132a of the first hinge structure 130, and the size can be larger (thicker). The return spring can be set between the first working piece 210a and the second working piece 220a, without being exposed and not easy to fall out. Figure 8 As shown, torsion spring 300a is coaxial with second hinge structure 230a and disposed in annular groove 250a. Torsion spring 300a is used to maintain the working assembly 200a in an open position. Once the user completes the shearing action and releases the handle, torsion spring 300a props the first working member 210a and the second working member 220a apart, and the two handles open. This non-coaxial hinge structure simplifies the product structure and reduces manufacturing complexity.

[0047] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present disclosure, and such modifications or substitutions should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A hardware tool, characterized in that: include: a handle assembly comprising a first handle and a second handle connected by a first hinge structure; and A working assembly comprising a first working piece and a second working piece connected by a second hinge structure, wherein the first working piece comprises a first working portion, a first arm portion, and a first hinge portion therebetween, and the second working piece comprises a second working portion, a second arm portion, and a second hinge portion therebetween, wherein the first hinge portion and the second hinge portion are hingedly connected to form the second hinge structure; In which, the working component is detachably connected to one end of the first handle and the second handle where the first hinge structure is set, and the first arm and the second arm can be driven by the first handle and the second handle to make the first working part and the second working part rotate around the center line defined by the second hinge structure and close.

2. The hardware tool according to claim 1, characterized in that: The working assembly is detachably clamped between the first handle and the second handle by the first arm and the second arm. The first arm and the second arm can be driven by the first handle and the second handle to rotate the first working part and the second working part around the center line defined by the second hinge structure and close.

3. The hardware tool according to claim 1, characterized in that: The centerline of the first hinge structure is collinear with the centerline of the second hinge structure, and / or the end of the first handle and the end of the second handle are connected to form the first hinge structure connection.

4. The hardware tool according to claim 1, characterized in that: The first hinge structure includes an upper hinge structure and a lower hinge structure that are spaced apart in a length direction of a center line defined by the first hinge structure, and the working assembly is located between the upper hinge structure and the lower hinge structure.

5. The hardware tool according to claim 4, characterized in that: The ends of the first handle and the second handle each include an upper baffle and a lower baffle spaced apart. The upper baffle of the first handle and the upper baffle of the second handle are hinged to form the upper hinged structure, and the lower baffle of the first handle and the lower baffle of the second handle are hinged to form the lower hinged structure.

6. The hardware tool according to claim 5, characterized in that: The first arm portion is located between the upper baffle and the lower baffle of the first handle, and the second arm portion is located between the upper baffle and the lower baffle of the first handle.

7. The hardware tool according to claim 6, characterized in that: The first handle and the second handle are provided with a first driving part and a second driving part at a predetermined distance from the first hinge structure, and the first driving part and the second driving part respectively form an interlocking fit with the first arm part and the second arm part in the opening and closing direction.

8. The hardware tool according to claim 7, characterized in that: The first driving portion and the second driving portion are protrusions, and the first arm portion and the second arm portion are provided with recesses matched with the protrusions.

9. The hardware tool according to claim 1, characterized in that: A center line of the first hinge structure and a center line of the second hinge structure have a predetermined distance.

10. The hardware tool according to claim 9, characterized in that: The first hinge structure is connected via a hinge shaft, and the hinge shaft passes between the first arm portion and the second arm portion of the working assembly.

11. The hardware tool according to claim 9, characterized in that: An annular groove and a return spring are provided between the first working member and the second working member. The annular groove is coaxial with the second hinge structure. The return spring is provided in the annular groove. The return spring is used to keep the working assembly in an open state.

12. A working component, characterized in that: The cam is connected to the workbench by a second hinge structure, wherein the first working piece includes a first working part, a first arm and a first hinge part therebetween, and the second working piece includes a second working part, a second arm and a second hinge part therebetween, and the first hinge part and the second hinge part are hingedly connected to form the second hinge structure; wherein the working assembly is used to be detachably connected to one end of the first hinge structure provided with a pair of hinged handles, and the first arm and the second arm can be driven by the pair of hinged handles to make the first working part and the second working part rotate around the center line defined by the second hinge structure and close.

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