TWI724833B - Digital adjustable wrench that can ensure the accuracy of force - Google Patents

Abstract

The present invention includes a wrench body, a torque force measuring unit, a display unit, a setting interface and a torque compensation module, wherein the wrench body has a movable part, a fixed part, a movable part adjusting element and a grip part , The movable part is slidably arranged on the wrench body and adjacent to the fixed part, the movable part adjusting element is used to adjust the distance of the movable part relative to the fixed part, and the fixed part has a plurality of top abutting sides, and the plurality of top abutting positions Different to correspond to screws of different specifications, the plurality of top abutments and the movable part moved to the corresponding positions form a clamping space for screws of different specifications, and the setting interface allows the user to adjust the force from the rotation center of the screw to the force application position. The arm length is set, and the torque compensation module is used to compensate the output torque measured by the torque measurement unit; according to this, the present invention can provide a high-precision torque value through the compensation method, which meets the requirements for use. The accuracy requirements.

Description

Digital adjustable wrench that can ensure the accuracy of force

The present invention relates to an adjustable wrench, in particular to a digital adjustable wrench that can ensure the precision of force application.

Please refer to "Figure 1" and "Figure 2". The adjustable wrench is a schematic diagram of the use of the conventional adjustable wrench. As shown in the figure, the conventional adjustable wrench has a fixed part 1, a movable part adjustment element 2 and a movable part 3. Adjusting the movable part adjustment element 2 can change the distance between the movable part 3 and the fixed part 1, and is suitable for screws 4 and 5 of various sizes, as shown in "Figure 1", to clamp a smaller size screw 4; and As shown in "Picture 2", a larger size screw 5 is clamped.

In this conventional technology, due to the different sizes of the screws 4 and 5, the clamping positions of the personal operating habits are different, which will cause the fixing part 1 and the movable part 3 to clamp the screws 4 and 5 in an unfixed position, which leads to The length of the force application arm L (complementary figure) is not fixed. If it is implemented in a digital adjustable wrench with displayed torque, because the length of the force application arm L is not fixed, the accuracy of the torque measurement will be affected. The use of precision is required.

Please refer to "Figure 3" and "Figure 4" again. In order to solve the problem that the length of the force arm L of the conventional adjustable wrench is not fixed, some people use the designed fixed part 6 and the movable part 7 to clamp The force arm L produced by screws 4 and 5 of different specifications is the same, so there is no problem of low torque accuracy caused by the change of the length of the force arm.

However, if the smaller screw 4 is clamped as shown in "Figure 3", the outer edges of the fixed portion 6 and the movable portion 7 will exceed the screw 4 too much, which may cause interference with other parts in use. The problem arises, which causes troubles in use. However, the method of clamping the larger screw 5 as shown in "Figure 4" has the problems of easy slippage and insufficient force due to insufficient clamping area.

The purpose of the present invention is to provide a digital adjustable wrench that can ensure the accuracy of force application, which can be used with screws of multiple specifications, except that small screws can be placed on the edge of the fixed part and the movable part, so as to avoid interference with other machines. At the same time, large screws can be placed on the edges of the fixed part and the movable part, increasing the force-receiving area of the screw, and providing high-precision torque values to meet high-precision use requirements.

Based on the above objective, the present invention discloses a digital adjustable wrench that can ensure the accuracy of force application, which includes a wrench body, a torque measuring unit, a display unit, a setting interface and a torque compensation module, wherein the wrench body has a The movable part, a fixed part, a movable part adjusting element, and a holding part, the fixed part and the holding part are respectively located at two ends of the wrench body, and the movable part is slidably arranged on the wrench body and adjacent to the fixed part Part, the movable part adjusting element is arranged on the wrench body, and provides adjustment of the distance between the movable part and the fixed part, and the fixed part has a plurality of abutting sides, and the positions of the plurality of abutting sides are different to correspond to different specifications Screws, the plurality of abutting sides respectively form a clamping space with the movable part moved to the corresponding position.

The torque measuring unit is arranged on the wrench body and measures the torque applied to the screw clamped by the digital adjustable wrench. The display unit and the setting interface are arranged on the wrench body, and the setting interface is for the user to follow The torque arm length from the rotation center of the clamped screw to the force application position is set, and the torque compensation module compensates the output torque measured by the torque force measurement unit according to the setting of the setting interface.

Accordingly, the present invention can be used to clamp the screws corresponding to the plurality of top-to-side specifications. Before use, adjust the movable part adjustment element first, so that the movable part moves to the corresponding position of the screw to be clamped, and cooperates with it. The corresponding top side constitutes the clamping space. Therefore, the position of the clamping screw in the clamping space is fixed, that is, the moment arm is a fixed value. Therefore, the torque compensation module can compensate the output torque measured by the torque measurement unit according to the setting of the setting interface, thereby increasing Accuracy, to meet the accuracy requirements in use.

With regard to the detailed content and technical description of the present invention, examples are now used for further description, but it should be understood that these examples are for illustrative purposes only and should not be construed as limitations to the implementation of the present invention.

Please refer to "FIG. 5", which is the first embodiment of the present invention, which includes a wrench body 10, a torque measurement unit 20, a display unit 30, a setting interface 40 and a torque compensation module 50. The wrench body 10 has a movable portion 11, a fixed portion 12, a movable portion adjusting element 13, and a grip portion 14. The fixed portion 12 and the grip portion 14 are respectively located at two ends of the wrench body 10. The movable portion 11 is slidably arranged on the wrench body 10 and adjacent to the fixed portion 12. The movable portion adjusting element 13 is arranged on the wrench body 10 and provides adjustment of the distance between the movable portion 11 and the fixed portion 12. The fixed portion 12 has a plurality of abutting edges 121, and the positions of the plurality of abutting edges 121 are different to correspond to screws of different specifications. The plurality of abutting edges 121 and the movable portion 11 moved to the corresponding positions respectively constitute a clamping space 70, In an embodiment, the plurality of abutting edges 121 of the fixed portion 12 may be a continuously bent contour line and arranged on a side adjacent to the movable portion 11.

The torque measuring unit 20 is arranged on the wrench body 10 and measures the torque applied to the screw clamped by the digital adjustable wrench. The display unit 30 is arranged on the wrench body 10, and the setting interface 40 is arranged on For the wrench body 10, the setting interface 40 is for the user to set the length of the arm of the clamped screw from the rotation center to the force application position. The setting interface 40 has a variety of implementation forms, such as buttons, knobs, etc., as shown in the figure As shown, taking the knob as an example, the explanation is as follows.

Please refer to "Figure 6" and "Figure 7" again, the wrench body 10 can be provided with a plurality of specification marks 80, when the movable portion 11 slides relative to the wrench body 10 to indicate any position of the plurality of specification marks 80, it is constituted The clamping space 70 corresponding to the specifications can be used for clamping screws 90 and 91 of the corresponding specifications. And the setting interface 40 (around the knob) is also provided with plural patterns corresponding to the plural specification marks 80, and the plural patterns correspond to the length of the force arm from the rotation center to the force application position after the plural screws of different specifications are clamped. For example, the plural specification marks 80 can be A (small size screw 90) and B (large size screw 91), the clamping space 70 corresponds to screws 90 and 91 of different specifications are also divided into A and B, and the The movable portion 11 has an indicator arrow 111, and the movable portion 11 slides relative to the wrench body 10 so that the indicator arrow 111 indicates A or B, and the setting interface 40 (knob) also has patterns of A and B around the setting interface 40 (knob). When the indicating arrow 111 indicates A, it means that the screw size of the screw 90 clamped in the clamping space 70 is A, and the setting interface 40 should also be rotated to indicate A, as shown in "Figure 6"; similarly, the indication When the arrow 111 indicates B, it means that the screw size of the screw 91 clamped in the clamping space 70 is B, and the setting interface 40 should also be rotated to indicate B, as shown in "FIG. 7". The above-mentioned operation is to allow the setting interface 40 to be set by the user according to the length of the arm of the clamped screw from the rotation center to the force application position.

The torque compensation module 50 is connected to the display unit 30 and the setting interface 40. The torque compensation module 50 compensates and compensates the torque value measured by the torque measurement unit 20 according to the setting of the setting interface 40 The subsequent torque value is displayed on the display unit 30. In order to speed up the calculation of compensation, the present invention may further include a memory module 60 that is connected to the torque compensation module 50 and stores the plural compensation modes corresponding to the plural top sides 121, and the torque compensation module 50 The corresponding compensation mode is selected from the memory module 60. The complex compensation mode can be converted through a specific formula. The formula is based on the change of the force arm caused by the screw specifications, and there are different compensations, that is The compensation can be simplified to a specific formula. Therefore, the memory module 60 can store a specific formula.

Please refer to "FIG. 8A" and "FIG. 8B", which is a second embodiment of the present invention. In this embodiment, an adjustment rod 122 is further included. The adjustment rod 122 has an abutting edge 123 and the adjustment rod 122 Move up and down relative to the fixed portion 12, and let the abutting edge 123 serve as the abutting edge 121 with different positions. In order to facilitate adjustment of the position of the adjusting rod 122, the adjusting rod 122 is further connected to a slider 124, which is exposed on the wrench body 10, and the slider 124 links the adjusting rod 122 to move relative to the fixed portion 12 . And in order to facilitate adjustment of the position of the adjusting rod 122 relative to the fixed portion 12, the fixed portion 12 can also be provided with a pattern corresponding to the plural specification marks 80, that is, the patterns of A and B are set on the fixed portion 12, and accordingly, when When adjusting the position of the top end of the adjusting rod 122 relative to the fixed portion 12 to the pattern A, as shown in "FIG. 8A", it can be applied to the operation of a small-sized screw 90 (that is, specification A). When the position of the top end of the adjusting rod 122 relative to the fixed portion 12 is adjusted to the pattern B, as shown in "FIG. 8B", it can be applied to a large-size screw 91 (that is, specification B).

As mentioned above, the advantages of the present invention include at least:

1. The present invention can be used to clamp the screws corresponding to the plurality of top-to-side specifications. Since the position of the clamping screws in the clamping space is fixed, that is, the force arm is a fixed value, the torque compensation module can be based on the setting interface The signal is used to compensate the output torque measured by the torque measuring unit, and the accuracy can be improved to meet the accuracy requirements in use.

2. The compensation mode can be pre-stored through the setting of the memory module, and the conversion can be performed through a specific formula to speed up the calculation of compensation.

3. The wrench body has a specification mark, which can assist in operation and avoid manual operation errors.

4. When used to clamp small-size screws, they can be located on the front side of the fixed part and the movable part, which is relatively convenient to use and will not cause trouble in use.

5. When used to clamp large-size screws, the outer edge of the screw can be clamped completely, the clamping area is sufficient, and there is no problem of slippage and insufficient force.

Acquaintance

L: force arm

1, 6: fixed part

2: Adjustable components of the movable part

3, 7: Activity Department

4, 5: Screw

this invention

10: Wrench body

11: Activities Department

111: Indicating arrow

12: Fixed part

121: Top to Side

122: adjustment lever

123: Leaning Side

124: Slider

13: Adjusting components of the movable part

14: Grip

20: Torque measuring unit

30: display unit

40: Setting interface

50: Torque compensation module

60: Memory module

70: Clamping space

80: Specification mark

90, 91: screws

Figure 1 is a structural diagram of a conventional adjustable wrench for clamping small-size screws. Figure 2 is a structural diagram of a large-size screw clamped by a conventional adjustable wrench. Fig. 3 is a structural diagram of another conventional adjustable wrench for clamping small-sized screws. Figure 4 is a structural diagram of another conventional adjustable wrench for clamping large-size screws. Fig. 5 is a structural diagram of an adjustable wrench according to the first embodiment of the present invention. Fig. 6 is a structural diagram of clamping small-size screws according to the first embodiment of the present invention. Fig. 7 is a structural diagram of clamping a large-size screw according to the first embodiment of the present invention. Figures 8A-8B are structural diagrams of an adjustable wrench according to a second embodiment of the present invention.

10: Wrench body

11: Activities Department

111: Indicating arrow

12: Fixed part

121: Top to Side

13: Adjusting components of the movable part

14: Grip

20: Torque measuring unit

30: display unit

40: Setting interface

50: Torque compensation module

60: Memory module

70: Clamping space

80: Specification mark

Claims (5)

A digital adjustable wrench capable of ensuring the accuracy of force application, comprising: a wrench body having a movable part, a fixed part, a movable part adjusting element, and a holding part, the fixed part and the holding part are respectively Located at both ends of the wrench body, the movable part is slidably arranged on the wrench body and adjacent to the fixed part, and the movable part adjusting element is arranged on the wrench body and provides an adjustment between the movable part and the fixed part. The fixed part has a plurality of top abutting sides, the positions of the plurality of top abutting sides are different and corresponding to a plurality of screws of different specifications, the plurality of top abutting sides respectively form a clamping space with the movable part that moves to the corresponding position, and the wrench The body is provided with a plurality of specification marks, and when the movable part slides to any position indicating the plurality of specification marks relative to the wrench body, the clamping space of the corresponding specification is formed; a torque force measuring unit is arranged on the On the wrench body, and measure and obtain the torque of the screw clamped by the digital adjustable wrench; a display unit, the display unit is arranged on the wrench body, and displays all operation information; a setting interface; the setting interface setting In the wrench body, the setting interface allows the user to set the length of the arm of the clamped screw from the rotation center to the force application position, and the setting interface sets a pattern corresponding to the plural specification marks, and the plural pattern corresponds to The length of the lever arm from the center of rotation to the force application position after a plurality of screws of different specifications are clamped; and a torque compensation module, which measures the output of the torque measurement unit according to the setting of the setting interface Torque is compensated. The digital adjustable wrench capable of ensuring the accuracy of force application as described in claim 1, which further includes an adjusting rod, the adjusting rod has an abutting side and the adjusting rod moves up and down relative to the fixing part, so that the abutting side is different in position The top to the side. The digital adjustable wrench capable of ensuring the accuracy of force application as described in claim 2, wherein the adjusting rod is further connected to a slider, the slider is exposed on the wrench body, and the slider links the adjusting rod to move relative to the fixed part . The digital adjustable wrench capable of ensuring the accuracy of force application as described in claim 1, wherein the plurality of abutting edges of the fixed portion are continuously bent contour lines and are arranged on a side adjacent to the movable portion. The digital adjustable wrench capable of ensuring the accuracy of force application as described in claim 1, which further includes a memory module connected to the torque compensation module and storing the plural compensation modes corresponding to the plural top and side, and the torque The compensation module selects the corresponding compensation mode from the memory module.

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