TWI850069B - Fan wrench - Google Patents

Abstract

A fan wrench includes a rod body and an operation member. The rod body includes a first assembling portion, the first assembling portion includes an assembling arm and a blocking portion separate from each other, a receiving slot is formed between the assembling arm and the blocking portion, and the blocking portion has a length less than a length of the assembling arm. The operation member includes a second assembling portion and a working portion. The second assembling portion is connected to the assembly arm by a shaft defining a rotation axis. The operation member is rotatable about the rotation axis relative to the first assembling portion so that a portion of the operation member is movable to be located within the receiving slot.

Description

Fan wrench

The present invention relates to a fan wrench, and more particularly to an improved technical structure of a fan wrench used for disassembling a vehicle fan clutch.

In order to effectively keep the engine at normal operating temperature and prevent overheating, the cooling fan clutch becomes an important component in the automotive engine cooling system. The fan clutch connects the fan and the engine shaft and adjusts the fan speed according to temperature changes. When the engine temperature is low, the fan speed is slow, and when the engine temperature is high, the fan speed will increase to ensure effective heat dissipation efficiency. When the fan clutch fails and needs to be replaced, the lock (such as bolts or nuts) fixed to the shaft must be loosened first. However, due to the small space around the fan, it is difficult for maintenance personnel to use conventional hand tools to accurately loosen the lock. In addition, due to the small space, it is difficult for maintenance personnel to exert enough force to rotate the lock, which has shortcomings that need to be improved.

Therefore, it is necessary to provide a novel and advanced fan wrench to solve the above-mentioned problems.

The main purpose of the present invention is to provide a fan wrench that can effectively disassemble and assemble the locking piece of the fan clutch, and can quickly disassemble and assemble the wrench to correspond to different locking piece sizes.

To achieve the above-mentioned purpose, the present invention provides a fan wrench, comprising a rod and a pull member. The rod is provided with a first assembly part, the first assembly part is provided with a spaced assembly arm and a stopper, a receiving groove is formed between the assembly arm and the stopper, and the extension length of the stopper is less than the extension length of the assembly arm. The pull member is provided with a second assembly part and a working part, the second assembly part is assembled to the assembly arm along a rotation axis through a pivot, and the pull member can rotate relative to the first assembly part around the rotation axis so that part of the pull member moves into the receiving groove.

The following examples are merely used to illustrate possible implementations of the present invention, but are not intended to limit the scope of protection of the present invention, so it should be noted in advance.

Please refer to Figures 1 to 5, which show a preferred embodiment of the present invention. The fan wrench of the present invention includes a rod 1 and a pull member 2.

The rod body 1 has a first connecting portion 11 , and the first connecting portion 11 has a connecting arm 12 and a blocking portion 13 spaced apart from each other. A receiving groove 14 is formed between the connecting arm 12 and the blocking portion 13 , and the extending length of the blocking portion 13 is shorter than the extending length of the connecting arm 12 .

The pull member 2 has a second assembly portion 21 and a working portion 22. The second assembly portion 21 is assembled to the assembly arm 12 along a rotation axis X via a hinge 3. The pull member 2 can rotate around the rotation axis X relative to the first assembly portion 11 so that part of the pull member 2 moves into the accommodating groove 14.

In this embodiment, the rod 1 is provided with a plug end 15 at one end opposite to the first assembly part 11, and the plug end 15 is used to be plugged into an impact tool. When the tool is to be disassembled, the working part 22 and part of the rod 1 are only required to be inserted into the fan clutch and the working part 22 is assembled to the locking piece of the fan clutch. When the pull member 2 swings and abuts against the bottom of the accommodating groove 14 (as shown in Figures 4 and 5), the locking piece can be effectively loosened by the impact force of the impact tool (as shown in Figure 5). The blocking portion 13 can effectively interfere with the pull member 2 to prevent the pull member 2 from being separated from the assembly arm 12. When the pull member 2 of a different size is to be replaced, the pull member 2 can be replaced by simply moving the pull member 2 so that the pull member 2 does not interfere with the blocking portion 13, thereby increasing the efficiency of removing and replacing the pull member 2.

Specifically, the second assembly portion 21 is provided with a major arc segment 211 at one end away from the working portion 22, and the radius of the major arc segment 211 is smaller than the distance from the rotation axis X to the blocking portion 13. The blocking portion 13 is provided with a concave arc segment 131 at one end facing the second assembly portion 21, and the curvature centers of the concave arc segment 131 and the major arc segment 211 are located on the rotation axis X, so that the concave arc segment 131 and the major arc segment 211 do not interfere with each other when part of the pull member 2 is not moved into the receiving groove 14.

One end of the connecting arm 12 is in the shape of an arc plate, and the radial dimension of the arc plate corresponds to the radial dimension of the superior arc segment 211, so that the connecting arm 12 is evenly aligned with the second connecting portion 21, which is less likely to cause the pull member 2 to shake relative to the connecting arm 12.

Preferably, the pivot 3 is fixed to the assembly arm 12, and the second assembly portion 21 is provided with a assembly hole 23, and the assembly hole 23 is rotatably sleeved on the pivot 3. In this embodiment, the assembly arm 12 is provided with a plug hole 16, and the pivot 3 is inserted into the plug hole 16. The pivot 3 can be tightly fitted or additionally welded to fix the pivot 3. The pivot 3 is provided with an annular groove 31 at one end away from the assembly arm 12, and a fastener 32 is sleeved on the annular groove 31. The fastener 32 stops at the pull member 2 to prevent the pull member 2 from being separated from the pivot 3. The fastener 32 can be quickly disassembled for quick replacement of the pull member 2.

In addition, the pull member 2 further includes a connecting section 24, which is connected between the second assembly portion 21 and the working portion 22. The pull member 2 can rotate around the rotation axis X relative to the first assembly portion 11 to move the connecting section 24 into the accommodating groove 14 so that the blocking portion 13 interferes with the connecting section 24. In this embodiment, the accommodating groove 14 is a U-shaped groove.

It is worth mentioning that the working portion 22 is recessed with a first clamping groove 25, and the first clamping groove 25 extends along the extension direction of the connecting section 24. The bottom of the first clamping groove 25 is recessed with a second clamping groove 26, and the width of the second clamping groove 26 is smaller than that of the first clamping groove 25. The staff can use the first clamping groove 25 or the second clamping groove 26 to clamp according to the size of the locking piece, so as to improve the practicality of the working portion 22.

1: Rod body 11: First assembly part 12: Assembly arm 13: Stopper 131: Concave arc segment 14: Accommodation groove 15: Plug end 16: Socket 2: Pull piece 21: Second assembly part 211: Superior arc segment 22: Working part 23: Assembly hole 24: Connection section 25: First clamping groove 26: Second clamping groove 3: Axis 31: Ring groove 32: Fastener X: Rotation axis

Figure 1 is a three-dimensional diagram of a preferred embodiment of the present invention. Figure 2 is a decomposition diagram of a preferred embodiment of the present invention. Figure 3 is a partial schematic diagram of a preferred embodiment of the present invention. Figure 4 is another three-dimensional diagram of a preferred embodiment of the present invention. Figure 5 is a diagram of a preferred embodiment of the present invention in use.

1: Rod body

11: The first set of joints

12: Assembly arm

13: Guard

15: Plug terminal

2: Actuator

21: The second set of joints

22: Work Department

3: Pivot

Claims (10)

A fan wrench includes: a rod body, provided with a first assembly part, the first assembly part is provided with a spaced assembly arm and a stopper, a receiving groove is formed between the assembly arm and the stopper, and the extension length of the stopper is less than the extension length of the assembly arm; a pull member, provided with a second assembly part and a working part, the second assembly part is assembled to the assembly arm along a rotation axis through a pivot, and the pull member can rotate relative to the first assembly part around the rotation axis so that part of the pull member moves into the receiving groove. A fan wrench as described in claim 1, wherein the second connecting portion is provided with a superior arc segment at one end away from the working portion, and the radius of the superior arc segment is smaller than the distance from the rotation axis to the blocking portion in the radial direction. A fan wrench as described in claim 2, wherein the blocking portion is provided with a concave arc segment at one end facing the second assembly portion, and the centers of curvature of the concave arc segment and the superior arc segment are located on the rotation axis. A fan wrench as described in claim 3, wherein one end of the connecting arm is in the shape of a circular arc plate, and the radial dimension of the circular arc plate corresponds to the radial dimension of the superior arc segment. As described in claim 1, the fan wrench, wherein the pivot is fixedly connected to the connecting arm, and the second connecting portion is provided with a connecting hole, and the connecting hole is rotatably sleeved on the pivot. The fan wrench as described in claim 1, wherein the pull member further includes a connecting section, the connecting section is connected between the second assembly part and the working part, and the pull member can rotate around the rotation axis relative to the first assembly part to move the connecting section into the receiving groove. A fan wrench as described in claim 6, wherein the working portion is recessed with a first clamping groove, and the first clamping groove extends along the extension direction of the connecting section. As described in claim 7, the fan wrench, wherein the bottom of the first clamping groove is recessed with a second clamping groove, and the width of the second clamping groove is smaller than the width of the first clamping groove. A fan wrench as described in any one of claims 1 to 8, wherein the rod body is provided with a plug-in end at one end opposite to the first assembly portion, and the plug-in end is provided for plugging into an impact tool. A fan wrench as described in claim 3, wherein one end of the assembly arm is in the shape of an arc plate, and the radial dimension of the arc plate corresponds to the radial dimension of the superior arc segment; the pivot is fixedly connected to the assembly arm, and the second assembly portion is provided with a assembly hole, and the assembly hole is rotatably sleeved on the pivot; the pull member further includes a connecting section, which is connected between the second assembly portion and the working portion, and the pull member can rotate around the rotation axis relative to the first assembly portion to move the connecting section into the accommodating groove; the working portion is recessed There is a first clip groove, which extends along the extension direction of the connecting section; a second clip groove is recessed at the bottom of the first clip groove, and the width of the second clip groove is smaller than that of the first clip groove; an end of the rod body opposite to the first assembly part is provided with a plug end, and the plug end is used to be plugged into an impact tool; an end of the pivot away from the assembly arm is provided with an annular groove, and the annular groove sleeve is provided with a fastener, and the fastener is blocked by the pull member; the accommodating groove is a U-shaped groove; the assembly arm is penetrated with an insertion hole, and the pivot is inserted into the insertion hole.

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