Spanner extension mechanism and spanner

Abstract

The utility model discloses a wrench extension mechanism and wrench, wrench extension mechanism includes base body, connecting assembly and transmission assembly, and connecting assembly includes first connecting piece and second connecting piece, and first connecting piece and second connecting piece are rotatablely installed in the both ends of base body. Transmission assembly rotatablely installs in base body, and transmission assembly both ends respectively drive connection first connecting piece and second connecting piece, and the rotation axis of transmission assembly is perpendicular to the rotation axis of first connecting piece and second connecting piece respectively. First of all, the base body is extended into the transverse clearance, and the first connecting piece is connected with the bolt, and the second connecting piece is connected with the wrench, and the transmission assembly is driven to rotate through the rotation of the second connecting piece driven by the wrench, and then the first connecting piece is driven to rotate, thereby the bolt can be screwed with the help of the first connecting piece. Utilize above-mentioned wrench extension mechanism, can change the screwing direction of bolt, thereby can utilize wrench extension mechanism and extend into the transverse clearance and screw the bolt.

Description

Technical Field

[0001] This utility model relates to the field of wrench technology, specifically to a wrench extension mechanism and a wrench. Background Technology

[0002] A wrench is a commonly used tool for installation and disassembly. It is a hand tool that uses leverage to tighten or loosen bolts, screws, nuts, and other threaded fasteners that hold bolts or nuts in open or recessed holes.

[0003] For existing wrenches, see patent CN202211720790.1. To tighten wrenches located in deep holes or gaps, an extension mechanism can be added to the wrench along the axial direction. However, this extension mechanism can only tighten bolts in longitudinal gaps (where the bolt axis is parallel to the depth direction of the gap) and cannot tighten bolts in transverse gaps (where the bolt axis is perpendicular to the depth direction of the gap).

[0004] Therefore, how to tighten bolts within the lateral gap is a technical problem that urgently needs to be solved. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a wrench extension mechanism and a wrench to solve the technical problem of difficulty in turning bolts within the lateral gap in the prior art.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: In a first aspect, this utility model provides a wrench extension mechanism, which includes: Matrix; A connecting assembly, comprising a first connector and a second connector, wherein the first connector and the second connector are rotatably mounted at both ends of the base; and A transmission assembly is rotatably mounted on the base. The two ends of the transmission assembly are respectively connected to the first connector and the second connector, and the rotation axis of the transmission assembly is perpendicular to the rotation axes of the first connector and the second connector.

[0007] In some embodiments, the base includes a first support, a transition seat, and a second support, wherein the first support, the transition seat, and the second support are sequentially and detachably connected end to end, the first connector is rotatably mounted on the first support, and the second connector is rotatably mounted on the second support.

[0008] In some embodiments, the transmission assembly includes a first transmission member, a second transmission member, and a transition transmission member. The first transmission member is rotatably mounted on the first support and is drively connected to the first connector. The second transmission member is rotatably mounted on the second support and is drively connected to the second connector. The transition transmission member is rotatably mounted on the transition seat. The first transmission member, the transition transmission member, and the second transmission member are sequentially and detachably connected.

[0009] In some embodiments, the first connecting member includes a first worm gear and a first rotating part, the second connecting member includes a second worm gear and a second rotating part, the first transmission member includes a first worm, the second transmission member includes a second worm, the transition transmission member includes a coupling, the first rotating part is rotatably mounted on the first support, the first worm gear is sleeved on the first rotating part, the second rotating part is rotatably mounted on the second support, the second worm gear is sleeved on the second rotating part, the first worm is rotatably mounted on the first support and meshes with the first worm gear, the second worm is rotatably mounted on the second support and meshes with the second worm gear, and the coupling is rotatably mounted on the transition seat, with the first worm and the second worm detachably connected at both ends of the coupling.

[0010] In some embodiments, the first rotating part has a first hole along its axis, and the second rotating part has a second hole along its axis.

[0011] In some embodiments, the first rotating part has a first protrusion protruding outward along its axis, and the second rotating part has a second protrusion protruding outward along its axis.

[0012] In some embodiments, the first support has a first storage groove, the transition seat has a transition storage groove, the second support has a second storage groove, the first worm gear is rotatably embedded in the first storage groove, the coupling is rotatably mounted in the transition storage groove, and the second worm gear is rotatably embedded in the second storage groove.

[0013] In some embodiments, both the first worm and the second worm are cemented carbide worms, and both the first worm wheel and the second worm wheel are cemented carbide worm wheels.

[0014] In some embodiments, the substrate is a metal substrate.

[0015] Secondly, this utility model also provides a wrench equipped with the aforementioned wrench extension mechanism.

[0016] Compared with the prior art, the wrench extension mechanism provided by this utility model has the following advantages: First, the base is extended into the transverse gap, and the first connector is connected to the bolt, while the second connector is connected to the wrench. The wrench rotates the second connector, which in turn rotates the transmission assembly, thereby rotating the first connector. This allows the bolt to be tightened using the first connector. By utilizing the aforementioned wrench extension mechanism, the tightening direction of the bolt can be changed, allowing the wrench extension mechanism to be extended into the transverse gap for tightening. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the wrench extension mechanism provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of the internal structure of the wrench extension mechanism provided in this embodiment of the utility model; Explanation of reference numerals in the attached drawings: Base 100, First support 110, First receiving groove 111, Transition seat 120, Transition receiving groove 121, Second support 130, Second receiving groove 131, Connecting assembly 200, First connector 210, First worm gear 211, First rotating part 212, First sleeve hole 2121, Second connector 220, Second worm gear 221, Second rotating part 222, Second sleeve hole 2221, Transmission assembly 300, First transmission component 310, First worm 311, Second transmission component 320, Second worm 321, Transition transmission component 330, Coupling 331. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] To address the technical problem of difficulty in tightening bolts within lateral gaps, this invention provides a wrench extension mechanism that can change the tightening direction of the bolt, allowing the wrench extension mechanism to extend into the lateral gaps to tighten the bolt.

[0020] It should be noted that the wrench extension mechanism of this utility model is used to extend into the lateral gap. For ease of explanation, this utility model will be described using the application of the wrench extension mechanism to extend into the lateral gap as an example.

[0021] Please see Figure 1 , Figure 1This is a schematic diagram of the structure of a wrench extension mechanism in one embodiment of the present invention. The wrench extension mechanism includes a base 100, a connecting assembly 200, and a transmission assembly 300. The connecting assembly 200 includes a first connecting member 210 and a second connecting member 220, which are rotatably mounted on both ends of the base 100. The transmission assembly 300 is rotatably mounted on the base 100, and its two ends are respectively connected to the first connecting member 210 and the second connecting member 220. The rotation axis of the transmission assembly 300 is perpendicular to the rotation axes of the first connecting member 210 and the second connecting member 220.

[0022] In this embodiment, the base 100 is first extended into the transverse gap, and the first connecting member 210 is connected to the bolt, while the second connecting member 220 is connected to the wrench. The wrench rotates the second connecting member 220, which in turn rotates the transmission assembly 300, thereby rotating the first connecting member 210. Thus, the bolt can be tightened using the first connecting member 210. By utilizing the aforementioned wrench extension mechanism, the tightening direction of the bolt can be changed, allowing the wrench extension mechanism to be extended into the transverse gap for tightening.

[0023] In some embodiments, the base 100 includes a first support 110, a transition seat 120, and a second support 130. The first support 110, the transition seat 120, and the second support 130 are sequentially and detachably connected end-to-end. A first connector 210 is rotatably mounted on the first support 110, and a second connector 220 is rotatably mounted on the second support 130. Because the first support 110, the transition seat 120, and the second support 130 are sequentially and detachably connected end-to-end, it is convenient to replace the first support 110, the transition seat 120, and the second support 130 with different specifications.

[0024] Based on the above embodiments, in some embodiments, the transmission assembly 300 includes a first transmission member 310, a second transmission member 320, and a transition transmission member 330. The first transmission member 310 is rotatably mounted on the first support 110 and is drively connected to the first connecting member 210. The second transmission member 320 is rotatably mounted on the second support 130 and is drively connected to the second connecting member 220. The transition transmission member 330 is rotatably mounted on the transition seat 120. The first transmission member 310, the transition transmission member 330, and the second transmission member 320 are sequentially and detachably connected. This allows the first transmission member 310, the transition transmission member 330, and the second transmission member 320 to be detachably connected to the first support 110, the transition seat 120, and the second support 130.

[0025] In some embodiments, the first connecting member 210 includes a first worm gear 211 and a first rotating part 212; the second connecting member 220 includes a second worm gear 221 and a second rotating part 222; the first transmission member 310 includes a first worm 311; the second transmission member 320 includes a second worm 321; the transition transmission member 330 includes a coupling 331; the first rotating part 212 is rotatably mounted on the first support 110; the first worm gear 211 is sleeved on the first rotating part 212; the second rotating part 222 is rotatably mounted on the second support; the second worm gear 221 is sleeved on the second rotating part 222; the first worm 311 is rotatably mounted on the first support 110 and meshes with the first worm gear 211; the second worm 321 is rotatably mounted on the second support 130 and meshes with the second worm gear 221. The coupling 331 is rotatably mounted on the transition seat 120, and the first worm 311 and the second worm 321 are detachably connected to both ends of the coupling 331.

[0026] In some embodiments, the first rotating part 212 has a first sleeve hole 2121 along its axis, and the second rotating part 222 has a second sleeve hole 2221 along its axis. The first sleeve hole 2121 can be directly fitted onto the outer circumference of the bolt, or it can establish a transmission relationship with a screwdriver bit or socket used for tightening the bolt. The second sleeve hole 2221 can be fitted onto the output shaft of a wrench or electric screwdriver.

[0027] In some embodiments, the first rotating part 212 has a first protrusion (not shown) protruding outward along its axis, and the second rotating part 222 has a second protrusion (not shown) protruding outward along its axis. The first protrusion (not shown) can directly tighten the concave bolt, or establish a transmission relationship with a screwdriver bit or socket for tightening the bolt, while the second protrusion (not shown) can establish a transmission relationship with the output shaft of a wrench or electric screwdriver.

[0028] In some embodiments, the first support 110 has a first receiving groove 111, the transition seat 120 has a transition receiving groove 121, the second support 130 has a second receiving groove 131, the first worm gear 311 is rotatably embedded in the first receiving groove 111, the coupling 331 is rotatably mounted in the transition receiving groove 121, and the second worm gear 321 is rotatably embedded in the second receiving groove 131. Thus, the first support 110, the transition seat 120, and the second support 130 can respectively protect the first worm gear 311, the coupling 331, and the second worm gear 321.

[0029] In some embodiments, the first worm 311 and the second worm 321 are both cemented carbide worms, and the first worm wheel 211 and the second worm wheel 221 are both cemented carbide worm wheels. This ensures that the first worm 311, the second worm 321, the first worm wheel 211, and the second worm wheel 221 have sufficient hardness.

[0030] In some embodiments, the substrate 100 is a metal substrate 100.

[0031] In addition, this utility model also provides a wrench equipped with the aforementioned wrench extension mechanism.

[0032] To better understand this utility model, the following is combined with... Figure 1 and Figure 2 The technical solution of this utility model is described in detail below: First, the base 100 is extended into the transverse gap, and the first rotating part 212 is connected to the bolt. The second rotating part 222 is connected to the wrench. The wrench drives the second rotating part 222 to rotate, which in turn drives the second worm gear 221 to rotate. Subsequently, the second worm 321, coupling 331, first worm 311, first worm gear 211, and first rotating part 212 are rotated in sequence, thereby driving the bolt to rotate. Using the above-mentioned wrench extension mechanism, the tightening direction of the bolt can be changed, thus allowing the bolt to be tightened by extending the wrench extension mechanism into the transverse gap.

[0033] In the description of this application, it should be noted that the terms "upper" and "lower," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0034] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A wrench extension mechanism, characterized in that, include: Matrix; A connecting assembly includes a first connector and a second connector, which are rotatably mounted on both ends of the base, respectively. as well as A transmission assembly is rotatably mounted on the base. The two ends of the transmission assembly are respectively connected to the first connector and the second connector, and the rotation axis of the transmission assembly is perpendicular to the rotation axes of the first connector and the second connector.

2. The wrench extension mechanism according to claim 1, characterized in that, The base includes a first support, a transition seat, and a second support. The first support, the transition seat, and the second support are sequentially and detachably connected end to end. The first connector is rotatably mounted on the first support, and the second connector is rotatably mounted on the second support.

3. The wrench extension mechanism according to claim 2, characterized in that, The transmission assembly includes a first transmission member, a second transmission member, and a transition transmission member. The first transmission member is rotatably mounted on the first support and is connected to the first connecting member. The second transmission member is rotatably mounted on the second support and is connected to the second connecting member. The transition transmission member is rotatably mounted on the transition seat. The first transmission member, the transition transmission member, and the second transmission member are sequentially and detachably connected.

4. The wrench extension mechanism according to claim 3, characterized in that, The first connecting member includes a first worm gear and a first rotating part; the second connecting member includes a second worm gear and a second rotating part; the first transmission member includes a first worm; the second transmission member includes a second worm; the transition transmission member includes a coupling; the first rotating part is rotatably mounted on the first support; the first worm gear is sleeved on the first rotating part; the second rotating part is rotatably mounted on the second support; the second worm gear is sleeved on the second rotating part; the first worm is rotatably mounted on the first support and meshes with the first worm gear; the second worm is rotatably mounted on the second support and meshes with the second worm gear; the coupling is rotatably mounted on the transition seat, and the first worm and the second worm are detachably connected at both ends of the coupling.

5. The wrench extension mechanism according to claim 4, characterized in that, The first rotating part has a first hole along its axis, and the second rotating part has a second hole along its axis.

6. The wrench extension mechanism according to claim 4, characterized in that, The first rotating part has a first protrusion protruding outward along its axis, and the second rotating part has a second protrusion protruding outward along its axis.

7. The wrench extension mechanism according to claim 4, characterized in that, The first support has a first storage groove, the transition seat has a transition storage groove, the second support has a second storage groove, the first worm gear is rotatably embedded in the first storage groove, the coupling is rotatably installed in the transition storage groove, and the second worm gear is rotatably embedded in the second storage groove.

8. The wrench extension mechanism according to claim 4, characterized in that, Both the first worm and the second worm are cemented carbide worms, and both the first worm wheel and the second worm wheel are cemented carbide worm wheels.

9. The wrench extension mechanism according to claim 1, characterized in that, The substrate is a metal substrate.

10. A wrench, characterized in that, It is equipped with a wrench extension mechanism as described in any one of claims 1 to 9.

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