TWM603404U - Improved structure of impact wrench tool for auto repair - Google Patents

Abstract

The improved structure of the special impact wrench tool for auto repair in this creation mainly includes an impact rod, one end of which is equipped with an impact head for receiving impact force, and the other end is provided with an open connecting yoke and a crosswise with a predetermined diameter. Pivot, the pivot is radially connected with a spanning part relatively parallel; a plurality of driving pullers with long axis, both ends of the long axis are respectively provided with a spanner opening corresponding to the nut span and for connecting the yoke to move across A connecting limit span plate, the limit span plate is designed to recess a pair of pivot holes corresponding to the maximum diameter of the pivot through the center of gravity, and the axis pivot aperture extends in an opposite direction at an angle deviated from the long axis and less than ninety degrees The limit gap of the pivot spanning part, the width of the limit gap is smaller than the maximum diameter of the pivot hole.

Description

Improved structure of special impact wrench tool for auto repair

This creation is related to hand tools, especially an improved structure of a special impact wrench tool for auto repair, which can conveniently provide screw and nut loosening operations in a narrow space.

According to the prior knowledge, car repair work usually takes place in a narrow space in the engine room, where in particular, the clutch assembly is usually engaged between the fan and the drive shaft associated with the fan. The fan is usually located at the front end of the vehicle engine, next to the radiator, that is, between the radiator and the engine block. Because the space between the fan and the engine or radiator is very limited. Therefore, when attempting to replace the clutch assembly or otherwise repair the fan, it is extremely difficult to engage the nut holding the fan clutch assembly and loosen the nut to allow the clutch to be replaced. From the past to the present, although the auto repair industry has used various open-end wrenches made of flat materials to remove the fixed nut. However, this type of wrench usually needs to be connected with a long lever arm in order to obtain appropriate mechanical advantages to realize the removal of the fixed nut. However, usually in the engine room, the space of this kind of wrench is limited, and because the connecting rod is connected during the rotation of the nut, due to the change in the angle of the connection between the two, the joint end loosens and falls in the narrow space of the engine room, resulting in car repair Great trouble at work. In addition, the size and specifications of the nut for each vehicle brand are different. Although the end face of the wrench is often engraved with numbers, it is not easy to distinguish in an oily environment, especially the difference between the metric system and the imperial system is confused and mistaken. Therefore, how to easily and effectively distinguish and select wrenches with appropriate specifications and sizes is also in urgent need of improvement.

In view of this, the creator of this case, based on years of experience in producing and selling similar products, continued research and experimentation, and finally a practical creation was produced.

That is, the main purpose of this creation is to provide an improved structure of an impact wrench tool for auto repair, which is convenient and easy to operate in a narrow environment and the assembly tool is stable and does not fall off.

Another purpose of this creation is to provide an improved structure of a special impact wrench tool for auto repair, which can easily identify those who choose suitable specifications and sizes.

The reason is that an improved structure of a special impact wrench tool for auto repair based on this creation includes: an impact rod with a predetermined shaft length, one end of which is set as an impact head for receiving impact force, and the other end is set as a For the open connecting yoke, the rear end side of the opening is set as a resisting end, and the front end side of the opening opposite to the inner end surface is transversely provided with a pivot shaft with a predetermined diameter specification. The outer diameter of the pivot shaft is flat and recessed on both sides A symmetrical and parallel spanning part; a plurality of driving wrenches, which have a long axis, and two ends of the long axis are respectively provided with a spanner opening corresponding to various metric and inch specifications nut bridges and a supply and The connecting yoke movable span is connected with a restricting span plate. The restricting span plate is recessed with a shaft pivot hole corresponding to the largest diameter of the pivot shaft through the center of gravity. The outer diameter of the shaft pivot hole and the long axis are aligned with each other The guide angle of less than ninety degrees extends downward to recess a restriction notch relative to the pivot spanning part, and the width of the restriction notch is smaller than the maximum diameter of the pivot hole.

In the improved structure of the special impact wrench tool for auto repair, the shaft pivot hole of the driving wrench is preferably set on the side deviating from the long axis.

In the improved structure of the special impact wrench tool for auto repair, the lead angle formed by the limiting notch of the driving wrench and the long axis is preferably 75 degrees.

The improved structure of the special impact wrench tool for auto repair, wherein the long axis of the driving wrench The position of the line approach restriction span board is recessed with an identification hole in two different hole shapes to distinguish the metric system.

The improved structure of the special impact wrench tool for auto repair, wherein the restriction notch entrance end side of the restriction span plate is enlarged and recessed to form a guiding part, so as to provide the bridge part of the impact rod to be introduced forward.

The improved structure of the special impact wrench tool for auto repair, wherein the limiting span plate of the driving wrench is recessed at the position of the limiting notch and a resisting recess is provided to provide the resisting end of the connecting yoke of the impact rod relatively resisting Positioning.

10: Impact rod

11: Impact head

12: Connect the yoke

121: open

122: Boycott

123: inner end face

13: pivot

131: Jumper

20: Drive wrench

21: Long axis

22: Wrench opening

23: limit span

231: pivot hole

24: Limit the gap

25: Guiding Department

26: Identification hole

27: Identification hole

28: Resist the recess

30: Nut

A: Lead angle

D: Maximum circle diameter

S: Wide

[Figure 1] is an exploded perspective view of a preferred embodiment of this creation.

[Figure 2] is a combined perspective view of a preferred embodiment of this creation.

[Figure 3] is a partial enlarged cross-sectional view of Figure 2 of this creation.

[Figure 4] is a schematic diagram (1) showing the combined operation of this creative embodiment.

[Figure 5] is a schematic diagram showing the combined operation of this creative embodiment (2).

[Figure 6] is a schematic diagram (1) showing the action of the elastic nut of this creative embodiment.

[Figure 7] is a schematic diagram showing the action of the elastic nut of this creative embodiment (2).

[Figure 8] is a schematic diagram showing the action of the elastic nut of this creative embodiment (3).

Please refer to Figures 1 to 8. The improved structure of an impact wrench tool specially created for auto repair in this creation includes: an impact rod 10 with a predetermined shaft length and a plurality of drive wrenches 20; among them:

The impact rod 10 has a predetermined axial length, one end of which is set to receive impact force. The other end of the hitting head 11 is set as a connecting yoke 12 with an opening 121. The rear end side of the opening 121 is set as a resisting end 122, and the front end side of the opening 121 is transversely provided with a predetermined A pivot shaft 13 with a circular diameter specification, the pivot shaft 13 has a symmetrical and parallel bridge 131 on both sides of its outer diameter and flattened and recessed;

The drive puller 20 has a long axis 21, and two ends of the long axis 21 are respectively provided with a wrench opening 22 corresponding to various metric and inch nuts 30 spanning, and a connecting yoke 12 for movement The connecting limiting span plate 23 is provided with a pivot hole 231 corresponding to the maximum circular diameter of the pivot shaft 13 through the center of gravity. The pivot hole 231 is offset from one side of the long axis 21 As shown in Fig. 3, the outer diameter circumference of the pivot hole 231 and the long axis 21 form a lead angle A of less than ninety degrees, and extend downward to recess a restriction notch relative to the pivot bridge 131 24. The guide bevel angle between the restriction notch 24 and the long axis 21 is preferably 75 degrees. The width S of the restriction notch 24 is smaller than the maximum diameter D of the pivot hole 231, and the inlet end side of the restriction notch 24 A guide portion 25 is formed by expanding the recess to provide the bridge portion 131 of the impact rod 10 to be introduced in the forward direction; in addition, the long axis 21 is close to the position of the restricting bridge 23 and distinguishes the metric and imperial systems with two different hole shapes An identification hole 26, 27 is recessed, for example: the round identification hole 26 represents 32mm, 36mm, 40mm, 47mm, and other metric wrench openings 22; and the oval identification hole 27 represents 22.4mm (7 /8”), 47.625mm(1 7/8”), 50.8mm(2”) and other inch-size wrench openings 22. The restricting span plate 23 is opposite to the restricting notch 24 and a resisting recess is recessed. 28. In this way, the resisting end 122 of the connecting yoke 12 of the impact rod 10 is provided for relatively resisting positioning;

With the above combination, we have created an improved structure of a special impact wrench tool for auto repair. Please continue to refer to Figure 1 for operation and use. First, select a drive wrench 20 that fits the nut specifications according to your needs. The circular identification hole 26 and the elliptical identification hole 27 show the appearance of the hole shape, which can quickly distinguish the metric system, and then the numbers printed on the sides of the identification holes 26 and 27 (Figure Not shown) to be selected; after picking up the drive puller 20 of the required specification, the connecting yoke 12 with the opening 121 of the impact rod 10 abuts against the restricting notch 24 of the drive puller 20, but the restriction is The width S of the notch 24 is equal to the distance between the two parallel sides of the bridging portion 131, as shown in Figure 3, and the maximum outer diameter of the pivot 13 is greater than the width S of the restriction notch 24, and is connected to the pivot The maximum diameter D of the holes 231 are equal, so it cannot be crossed in any direction. As shown in Figures 4 and 5, the external diameter of the pivot 13 of the impact rod 10 must be flattened. The two sides of the portion 131 slide in parallel through the restriction gap 24 to reach the inner side of the shaft pivot hole 231 of the drive trigger 20, and the maximum diameter D of the pivot shaft 13 pivots relative to the inner diameter of the leaning shaft pivot hole 231, and then For use in narrow spaces such as automobile engine room for loosening operation of nuts.

Please continue to refer to Figs. 6 to 8. When the creative impact rod 10 is pivotally connected to the drive puller 20, a nut can be relatively fitted into the wrench opening 22 of the drive puller 20 by connecting it. 30. Based on the maximum diameter D of the pivot shaft 13 and the inner diameter pivot of the pivot hole 231, the impact rod 10 is pivoted by an angular displacement clockwise, as shown in Figures 6 to 7, and The resisting end 122 of the connecting yoke 12 is relatively restrained to the resisting recess 28 of the drive plate 20, wherein the cross-over portion 131 of the pivot shaft 13 with a flattened outer diameter deviates from the position of the limiting notch 24 by synchronous angular displacement, so that the connecting yoke 12 is firmly combined with the shaft pivot hole 231 of the driving wrench 20, and the relatively restrained resisting recess 28 forms a torque between the long axis 21 of the driving wrench 20 and the center of the nut 30, as shown in Figure 8, Therefore, the impact head 11 at the end of the impact rod 10 axially cooperates with an impact tool to provide instant impact power, and the impulse force of the limiting span plate 23 applied to the drive puller 20 clamps the wrench opening 22 in a counterclockwise direction The nut 30 is loosened.

In view of the above, since the drive plate 20 is designed with a long axis 21 in this creation, the restricting span plate 23 is recessed with a pivot hole 231 through the center of gravity and is arranged to deviate from the long axis 21. The outer diameter circumference of the pivot hole 231 and the long axis 21 form a lead angle A (especially 75 degrees) that is less than ninety degrees, and a restriction notch 24 is recessed and extends downward to make the restriction notch. The width S of 24 is smaller than the maximum diameter D of the pivot hole 231, and it is designed to match the crossover portion 131 with the outer diameter of the pivot 13 flattened on both sides, and the width S of the restriction gap 24 is equal to the parallel sides of the crossover portion 131 The maximum outer diameter of the pivot 13 is greater than the width S of the restriction gap 24, and the design is equivalent to the maximum diameter D of the pivot hole 231, so when the impact rod 10 and the driving trigger 20 are pivoted When connected, it rotates and operates the driving trigger 20 under any circumstances, during which the relative position of the shaft pivot is constant, so that the spanning portion 131 of the pivot 13 deviates from the position of the restriction gap 24 at a synchronous angle, and the deviation angle is stably restrained from the restriction. The shaft pivot hole 231 at the inner end of the gap 24, so any action during the operation process will not accidentally detach the impact rod 10 from the drive trigger 20, unless it follows the normal trajectory and rotates in a counterclockwise direction to move the outer diameter of the pivot 13 The bridging portion 131 flattened on both sides is parallel to the width S of the restriction notch 24, and moves out of the restriction of the maximum diameter D of the pivot hole 231 in the opposite direction.

To sum up, this creation of an improved structure of a special impact wrench tool for auto repair. The technical idea and innovative space form of the composition are convenient and easy to operate in a narrow environment, and the assembly tool is stable and does not fall off. It is convenient and easy. It is affirmed that the proper size for ground identification is more practical than conventional ones.

In addition, the above-mentioned embodiments are merely illustrative of the technology and effects of the creation, and are not used to limit the creation. Anyone familiar with this technology can modify and change the above-mentioned embodiments without violating the technical principle and spirit of this creation. Therefore, the protection scope of this creation right should be listed in the scope of patent application described later.

10: Impact rod

12: Connect the yoke

121: open

122: Boycott

13: pivot

131: Jumper

20: Drive wrench

21: Long axis

23: limit span

231: pivot hole

24: Limit the gap

25: Guiding Department

26: Identification hole

28: Resist the recess

A: Lead angle

D: Maximum circle diameter

S: Wide

Claims (6)

An improved structure of a special impact wrench tool for auto repair includes: an impact rod with a predetermined shaft length, one end of which is set as an impact head for receiving impact force, and the other end is set as an open connecting yoke. The rear end side of the opening is set as a resisting end, and the front end side of the opening is opposite to the inner end surface and a pivot shaft with a predetermined diameter specification is transversely provided. The two sides of the outer diameter of the pivot shaft are flattened and recessed to form a symmetrical parallel span. Connecting part; a plurality of driving wrenches, which have a long axis, and the two ends of the long axis are respectively provided with a spanner opening corresponding to various metric and inch specifications nut spanning and a spanning for the connecting yoke The connecting restricting span plate is designed to recess a pair of pivot holes corresponding to the maximum diameter of the pivot through the center of gravity. The outer diameter of the pivot hole and the long axis form a guide less than ninety degrees. The oblique angle extends downward to recess a restriction notch relative to the pivot spanning part, and the width of the restriction notch is smaller than the maximum diameter of the pivot hole. According to the improved structure of the special impact wrench tool for auto repair according to claim 1, wherein the shaft pivot hole of the driving wrench is preferably set on the side deviated from the long axis. According to the improved structure of the special impact wrench tool for auto repair as described in claim 1, the guide angle formed by the restriction notch of the driving wrench and the long axis is preferably 75 degrees. According to the improved structure of the special impact wrench tool for auto repair according to claim 1, the position of the long axis of the driving wrench close to the limiting span plate is recessed with an identification hole in two different hole shapes to distinguish between metric and inch systems. According to the improved structure of the special impact wrench tool for auto repair according to claim 1, wherein the restriction notch entrance end side of the restriction span plate is enlarged and recessed to form a guide portion, thereby providing the bridge portion of the impact rod to be introduced forward. According to the improved structure of the special impact wrench tool for auto repair as described in claim 1, in which the limiting span of the driving wrench is recessed in the position of the limiting notch corresponding to the limiting notch, so as to provide resistance to the connecting yoke of the impact rod The end is relatively abutted and positioned.

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