A screw tightening and loosening tool

Abstract

The utility model discloses a screw dismounting and tightening tool relates to manual tool technical field, include: bottom disc, multislotted pulley and multiple sets of same type's working part, and multiple sets of working part movably install on the bottom disc and take same point as the locus center, be provided with screwdriver bit on the working part, the working part contains single -slotted pulley, and the single -slotted pulley is equipped with transmission belt between multislotted pulley, and the screwdriver bit coaxial connection single -slotted pulley on to follow its rotation, and the multislotted pulley is fixed on the bottom disc, and its position coincides with the locus center of working part, the utility model discloses can be applicable to the synchronous dismounting and tightening operation of screw of different interval, simple and convenient.

Description

Technical Field

[0001] This utility model relates to the field of manual tools and instruments, and in particular to a screw tightening and loosening tool. Background Technology

[0002] In current production activities, screws are the most commonly used tools for fastening objects and machine parts, and the rotation of the thread can achieve the purpose of fastening and loosening quickly.

[0003] Typically, to achieve better fixation, many screws are used on the same piece of equipment, or even on a single surface of the equipment. Sometimes, to ensure flatness during installation, the screws cannot be tightened one by one, but need to be tightened gradually by switching back and forth. When disassembly and maintenance are required, numerous screws need to be removed one by one, which increases the workload considerably. Frequent repetitive work by operators is both time-consuming and labor-intensive. Therefore, there is a need to design a tool that can simultaneously tighten multiple screws. Utility Model Content

[0004] The purpose of this invention is to overcome the problem that multiple screws cannot be tightened synchronously in the existing technology, and to provide a screw tightening tool that can meet the requirements of synchronous tightening of multiple screws on different models and types of equipment.

[0005] To achieve the above objectives, this utility model provides a screw loosening tool, comprising:

[0006] The chassis may have multiple arc-shaped slots penetrating the top and bottom at its bottom, wherein the centers of the arc-shaped slots coincide.

[0007] A multi-groove pulley is fixed on the chassis, and its position coincides with the center of the trajectory of the arc-shaped groove.

[0008] Multiple screwdriver bits can be slidably disposed within the arc-shaped slot and can be connected to the multi-groove pulley via a transmission belt;

[0009] The shaft is connected to the screwdriver bit and / or the multi-groove pulley.

[0010] Optionally, the screw tightening tool includes multiple bases, each corresponding to a screwdriver bit. The bases can be disposed in arc-shaped slots to slidably connect the screwdriver bits and the chassis. A rotatable single-groove pulley is disposed within the base, and the single-groove pulley is used to connect to the multi-groove pulley via a transmission belt.

[0011] Optionally, the shaft can be connected to the base.

[0012] Optionally, the single-groove pulley and the screwdriver bit can be fixedly connected by a shaft, so that the screwdriver bit and the multi-groove pulley are rotatably connected.

[0013] Optionally, the chassis may also have arc-shaped limiting grooves that correspond one-to-one with the arc-shaped slots, and the center of the limiting grooves coincides with the center of the arc-shaped slots;

[0014] The base is also provided with a guide block, which is used to be embedded in the limiting groove to limit the rotation direction of the base.

[0015] Optionally, the chassis has a cavity, the base can be disposed in the cavity, the shaft is located outside the cavity, the top of the cavity has an arc-shaped limiting groove, the base has a guide block that can slide and adapt to the limiting groove, and the top of the cavity also has a connecting groove for the shaft to connect to the base.

[0016] Optionally, a bushing is provided at the bottom of the base, the bushing is slidably connected in an arc-shaped groove, the shaft penetrates downward through the base and is nested in the bushing, and there is a clearance fit between the shaft and the bushing.

[0017] Optionally, the chassis is provided with more than two arc-shaped slots, each of which is provided with a screwdriver bit that is connected to the multi-slot pulley for synchronous tightening and loosening of multiple screws.

[0018] Optionally, the screwdriver bit is detachably connected to the shaft.

[0019] Optionally, the screwdriver bit is a flathead and / or a Phillips head.

[0020] Through the above technical solution, this utility model provides a screw tightening and loosening tool. This tool, via a transmission belt and a multi-groove pulley, allows one set of working parts to simultaneously drive the others, thus achieving synchronized tightening and loosening of screws. This technical solution overcomes the problem of multiple screws not being able to be tightened and loosened simultaneously in existing technologies, improving the work efficiency of workers when dealing with the disassembly and installation of multiple screws. Attached Figure Description

[0021] Figure 1 This is one of the external schematic diagrams of a screw tightening tool according to one embodiment of the present utility model;

[0022] Figure 2 This is a second external schematic diagram of a screw tightening tool according to one embodiment of the present utility model;

[0023] Figure 3This is a schematic diagram of the internal structure of a screw tightening tool according to one embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the connection relationship of the base of a screw tightening tool according to one embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the connection relationship of a single-groove pulley in a screw tightening tool according to one embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures

[0027] 1. Chassis; 100. Arc-shaped groove; 101. Cavity; 2. Multi-groove pulley; 200. Limiting groove; 3. Working part; 300. Connecting groove; 301. Single-groove pulley; 302. Base; 303. Shaft handle; 304. Shaft part; 305. Guide block; 4. Screwdriver bit; 5. Drive belt; 6. Bushing. Detailed Implementation

[0028] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0029] It should be noted that, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "head," "tail," etc., indicating orientation or positional relationship are only for the convenience of describing this utility model 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 utility model. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0030] Furthermore, the terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "comprising" or "including" mean that the element preceding the word encompasses the element listed after the word, and do not exclude the possibility of encompassing other elements as well.

[0031] It should also be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; for those skilled in the art, the specific meaning of the above term in this utility model can be understood according to the specific circumstances.

[0032] All terms used in this invention have the same meaning as understood by one of ordinary skill in the art to which this invention pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0033] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0034] like Figure 3 The diagram illustrates a screw tightening tool according to one embodiment of the present invention. The tool includes a base 1, a multi-groove pulley 2, and multiple working parts 3. The bottom of the base 1 may have multiple vertically penetrating arc-shaped grooves 100. The multi-groove pulley 2 is fixed to the base 1, its position coinciding with the center of the arc-shaped grooves 100. The working parts 3 may include a base 302, a single-groove pulley 301, a screwdriver bit 4, a shaft shank 303, and a drive belt 5.

[0035] Specifically, such as Figure 5 As shown, in a single working part 3, the base 302 is in sliding contact with the chassis 1, and the single-groove pulley 301 can be embedded in the base 302. The shaft end of the single-groove pulley 301 extends to both ends. One end extends into a shaft portion 304 for mounting the screwdriver bit 4, and the shaft portion 304 moves within the arc-shaped groove 100. The other end is used to connect to the shaft handle 303. As long as the shaft handle 303 can drive the single-groove pulley 301 to rotate, this connection method can be any of the forms known to those skilled in the art.

[0036] The single-groove pulley 301 and the multi-groove pulley 2 can be connected by a transmission belt 5. When the shaft 303 of a certain working part 3 is rotated to make the corresponding screwdriver bit 4 work, the screwdriver bits 4 of the other working parts 3 will also rotate synchronously, thereby realizing the synchronous and rapid loosening and tightening of multiple screws.

[0037] In one embodiment of this utility model, such as Figure 1-3As shown, considering the convenience of operators in using the screw tightening and loosening tool provided by this utility model, a cavity 101 can also be provided inside the chassis 1. A limiting groove 200 and a connecting groove 300 are formed at the top of the cavity 101. A base 302 is disposed inside the cavity 101 and has a guide block 305 that slides and adapts to the limiting groove 200, so that the movement trajectory of the base 302 is consistent with the trajectory of the limiting groove 200. A shaft handle 303 is disposed outside the cavity 101, and the shaft handle 303 passes through the connecting groove 300 and connects to a single-groove pulley 301, so that the movement trajectory of the shaft handle 303 is consistent with the trajectory of the connecting groove 300, and when the shaft handle 303 is rotated, the single-groove pulley 301 can also rotate along with it. It should be emphasized that, as Figure 1-3 The structure shown is only one embodiment of this utility model. Under the condition that the effect of simultaneously tightening and loosening multiple screws can be guaranteed, this structure can also be various structures known to those skilled in the art.

[0038] To ensure the smooth movement of the working part 3 and the accuracy of the operator, the arc-shaped slot 100, the limiting slot 200, and the connecting slot 300 are all designed symmetrically about the axis of the trajectory center of the working part 3, and the arc-shaped slot 100 on the chassis 1 should correspond vertically to the limiting slot 200 and the connecting slot 300 on the top of the cavity 101.

[0039] Preferably, such as Figure 4 As shown, in order to prevent the movement of the base 302 from interfering with the rotation of the screwdriver bit 4, a bushing 6 is provided at the bottom of the base 302. The bushing 6 is slidably connected in the arc-shaped groove 100. The shaft 304 passes through the base 302 downward and is nested in the bushing 6, so that the shaft 304 is protected by the bushing 6 and is not affected by the base 302. In addition, there is a gap between the shaft 304 and the bushing 6 so that the rotation of the shaft 304 is not affected.

[0040] Furthermore, in order to achieve the simultaneous tightening and loosening of more than two screws, the chassis 1 can be provided with more than two arc-shaped slots 100 at the same time, and each arc-shaped slot 100 is provided with a working part 3, so as to achieve the simultaneous tightening and loosening of more than two screws.

[0041] Furthermore, the screwdriver bit 4 is detachably connected to the shaft portion 304. The screwdriver bit 4 in this invention is designed to be independently replaceable. By replacing only the screwdriver bit 4 instead of the entire working part 3, the service life of this tool can be significantly extended. This also makes maintenance and replacement work simpler and more economical. When the screwdriver bit 4 is worn or damaged, a new screwdriver bit 4 can be quickly replaced, thus reducing production interruption time and costs. At the same time, to accommodate different screw sizes, the screwdriver bit 4 can be selected from flathead or Phillips head types.

[0042] In this embodiment, by turning the shaft handle 303, the corresponding working part 3 can be moved along an arc. Since multiple working parts 3 move in an arc with the location of the multi-groove pulley 2 as the center and the transmission belt 5 as the radius, the movement of the working parts 3 is not restricted by the belt length, thereby changing the spacing between the multiple working parts 3 and realizing the tightening and loosening of screws with different spacing. At the same time, due to the transmission of the transmission belt 5, when the shaft handle 303 of one working part 3 is rotated to make its corresponding screwdriver bit 4 work, the screwdriver bit 4 of another working part 3 will also rotate synchronously, thereby realizing the synchronous and rapid tightening and loosening of screws.

[0043] Through the above technical solution, this utility model provides a screw tightening and loosening tool. This tool, via a transmission belt and a multi-groove pulley, allows one set of working parts to simultaneously drive the others, thus achieving synchronized tightening and loosening of screws. This technical solution overcomes the problem of multiple screws not being able to be tightened and loosened simultaneously in existing technologies, improving the work efficiency of workers when dealing with the disassembly and installation of multiple screws.

[0044] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and all fall within the protection scope of the present invention.

Claims

1. A screw tightening and loosening tool, characterized in that, include: The chassis (1) has a plurality of arc-shaped slots (100) that pass through the top and bottom at the bottom, wherein the centers of the arc-shaped slots (100) coincide. The multi-groove pulley (2) is fixed on the chassis (1), and its position coincides with the center of the trajectory of the arc-shaped groove (100); Multiple screwdriver bits (4) are slidably disposed in the arc-shaped groove (100) and connected to the multi-groove pulley (2) via a transmission belt (5); The shaft (303) is connected to the screwdriver bit (4) and / or the multi-groove pulley (2).

2. The screw tightening and loosening tool according to claim 1, characterized in that, The screw tightening tool includes multiple bases (302) that correspond one-to-one with the screwdriver bits (4). The bases (302) are set in arc-shaped slots (100) to slide the screwdriver bits (4) and the chassis (1). A rotatable single-groove pulley (301) is provided inside the base (302). The single-groove pulley (301) is used to connect with the multi-groove pulley (2) via a transmission belt (5).

3. The screw tightening and loosening tool according to claim 2, characterized in that, The shaft (303) is connected to the base (302).

4. The screw tightening and loosening tool according to claim 2, characterized in that, The single-groove pulley (301) and the screwdriver bit (4) are fixedly connected through a shaft (304) so ​​that the screwdriver bit (4) and the multi-groove pulley (2) are rotatably connected.

5. The screw tightening and loosening tool according to claim 2, characterized in that, The chassis (1) is also provided with arc-shaped limiting grooves (200) that correspond one-to-one with the arc-shaped slots (100), and the center of the limiting grooves (200) coincides with the center of the arc-shaped slots (100). The base (302) is also provided with a guide block (305), and the guide block (305) is used to be embedded in the limiting groove (200) to limit the rotation direction of the base.

6. The screw tightening and loosening tool according to claim 2, characterized in that, The chassis (1) is provided with a cavity (101), the base (302) is provided in the cavity (101), the shaft (303) is located outside the cavity (101), the top of the cavity (101) is provided with an arc-shaped limiting groove (200), the base (302) has a guide block (305) that can slide and adapt to the limiting groove (200), and the top of the cavity (101) is also provided with a connecting groove (300) for the shaft (303) to connect to the base (302).

7. The screw tightening and loosening tool according to claim 4, characterized in that, The base (302) is provided with a bushing (6) at the bottom. The bushing (6) is slidably connected in the arc-shaped groove (100). The shaft (304) passes through the base (302) downward and is nested in the bushing (6). The shaft (304) and the bushing (6) have a clearance fit.

8. The screw tightening and loosening tool according to claim 1, characterized in that, The chassis (1) is provided with more than two arc-shaped slots (100), and each arc-shaped slot (100) is provided with a screwdriver bit (4) that is connected to the multi-slot pulley (2) for transmission, so as to complete the synchronous loosening and tightening of multiple screws.

9. The screw tightening and loosening tool according to claim 4, characterized in that, The screwdriver bit (4) is detachably connected to the shaft (304).

10. The screw tightening and loosening tool according to claim 1, characterized in that, The screwdriver bit (4) is a flathead and / or a Phillips head.

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