A connection structure between the output shaft and the socket of an impact wrench

Abstract

This utility model discloses a connection structure between the output shaft and the sleeve of an impact wrench, specifically relating to the field of handheld power tool technology. It includes an impact wrench body, a connector mounted at one end of the impact wrench body, an output shaft mounted at the output end of the connector, a connecting sleeve fixedly connected to one side of the connector, and a connecting shaft on one side of the connecting sleeve. The inner side of the connecting shaft is adapted to the outer side of the output shaft, and a connecting component and a positioning mechanism are mounted on the outer side of the connecting sleeve. By setting the connecting component and positioning mechanism, this utility model allows multiple toothed plates to form multi-point contact limiting inside the insertion hole, effectively reducing the possibility of the connecting shaft loosening or falling off during operation. Simultaneously, multiple guide rods arranged in a cross shape provide auxiliary limiting during the installation of the connecting shaft, and the magnetic attraction between a second strong magnet and a first strong magnet enables positioning, further enhancing the connection stability between the output shaft and the connecting shaft.

Description

Technical Field

[0001] This utility model relates to the field of handheld power tool technology, and more specifically, to a connection structure between the output shaft and the socket of an impact wrench. Background Technology

[0002] An impact wrench is a common type of power tool used for disassembly, installation, and drilling. Impact wrenches generally include a high-speed rotating output shaft. When using an impact wrench to disassemble bolts on scaffolding or automobiles, the output shaft must be used in conjunction with a socket wrench, and the socket wrench must be locked onto the output shaft.

[0003] Existing electric impact wrenches require frequent replacement of the corresponding mounting and dismounting heads when disassembling or tightening bolts. The installation and disassembly of mounting and dismounting heads with electric impact wrenches is inconvenient, thus taking up a lot of replacement time and affecting operational efficiency.

[0004] A search revealed that Chinese patent CN218965279U discloses an electric impact wrench. This wrench uses a limiting protrusion to drive a tapered sleeve, causing the inner conical surface of the sleeve to approach and compress an elastic collet. The collet contracts due to its own elasticity, and its inner wall tightly adheres to the surface of the connecting shaft, locking and securing it. This allows for the installation and replacement of new mounting heads, making head replacement convenient and quick, saving replacement time, and improving operational efficiency.

[0005] In actual use, the electric impact wrench mentioned above will generate huge impact force and torque when working, which may cause the connection between the connecting shaft and the output shaft to be not firm enough. This will cause the force to be concentrated on the connection part, making the connecting shaft prone to loosening and falling off during operation. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a connection structure between the output shaft of an impact wrench and the sleeve, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A connection structure between an output shaft and a sleeve of an impact wrench includes an impact wrench body, a connector is installed at one end of the impact wrench body, an output shaft is installed at the output end of the connector, a connecting sleeve is fixedly connected to one side of the connector, a connecting shaft is provided on one side of the connecting sleeve, the inner side of the connecting shaft is adapted to the outer side of the output shaft, and a connecting component and a positioning mechanism are installed on the outer side of the connecting sleeve.

[0009] The connecting assembly includes a fixed ring, which is fixedly connected to the outer side of the connecting shaft. Multiple insertion holes are provided on one side of the fixed ring. A turntable is mounted on the outer side of the connecting cylinder. A rotating ring is fixedly connected to the inner side of the turntable and is rotatably connected to the outer side of the connecting cylinder. A threaded ring is fixedly connected to one side of the turntable. A movable ring is threadedly connected to the outer side of the threaded ring. Multiple connecting plates are fixedly connected to one side of the movable ring. A slider is fixedly connected to one side of each connecting plate. A movable block is provided on the outer side of the slider. A sliding groove is provided on one side of the movable block, and the inner side of the sliding groove is slidably connected to the slider. A toothed plate is fixedly connected to one end of the movable block, and the toothed plate is inserted into the inner side of the insertion hole.

[0010] By adopting the above technical solution, multiple toothed plates can be driven to perform multi-point positioning inside the insertion hole simply by rotating the turntable, so as to form a stable connection at multiple points.

[0011] As a further description of the above technical solution: the positioning mechanism includes multiple guide rods, the guide rods are fixedly connected to the inner side of the connecting cylinder, one end of the output shaft is fixedly connected to a first strong magnet, the inside of the connecting shaft is fixedly connected to a second strong magnet, and multiple guide grooves are opened on the outer side of the connecting shaft, the guide grooves are slidably connected to the outer side of the first strong magnet.

[0012] By adopting the above technical solution, multiple guide rods can provide auxiliary limiting for the connection of the connecting shaft, and the first strong magnet and the second strong magnet can provide positioning for the installation of the connecting shaft, which helps to enhance the connection stability between the output shaft and the connecting shaft.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. By setting up a connecting component, compared with the existing technology, the movable ring can be moved by rotating the turntable, so that multiple moving blocks can engage with the teeth on one side of the toothed plate inside the socket. This allows multiple toothed plates to form multi-point contact limit inside the socket, making the connection between the connecting shaft and the output shaft more secure and distributing the huge impact force and torque generated when the impact wrench body is working more evenly, effectively reducing the possibility of the connecting shaft loosening or falling off during operation.

[0015] 2. By setting up a positioning mechanism, compared with the existing technology, multiple guide rods arranged in a "+" shape can provide auxiliary limit during the installation of the connecting shaft, which can ensure that the center of the connecting shaft is strictly aligned with the center of the output shaft, preventing the connecting shaft from shifting or shaking during operation. Furthermore, the magnetic attraction between the second strong magnet and the first strong magnet can be used for positioning, further enhancing the connection stability between the output shaft and the connecting shaft. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the connecting shaft structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the connecting cylinder structure of this utility model.

[0019] Figure 4 This is a schematic cross-sectional view of the connecting cylinder of this utility model.

[0020] Figure 5 This is a schematic diagram of the movable ring structure of this utility model.

[0021] Figure 6 For the present utility model Figure 4 Enlarged view of the structure of part A in the middle.

[0022] The attached figures are labeled as follows: 1. Impact wrench body; 2. Connector; 3. Output shaft; 4. Connecting cylinder; 5. Connecting shaft; 6. Sleeve; 7. Fixing ring; 8. Insertion hole; 9. Turntable; 10. Rotating ring; 11. Threaded ring; 12. Moving ring; 13. Connecting plate; 14. Slider; 15. Moving block; 16. Slide groove; 17. Toothed plate; 18. Guide rod; 19. First strong magnet; 20. Second strong magnet; 21. Guide groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] The embodiments disclosed in this application are as follows: Figure 1-6 The connection structure between the output shaft and the sleeve of an impact wrench shown includes an impact wrench body 1, a connector 2 installed at one end of the impact wrench body 1, an output shaft 3 installed at the output end of the connector 2, a connecting sleeve 4 fixedly connected to one side of the connector 2, a connecting shaft 5 provided on one side of the connecting sleeve 4, the inner side of the connecting shaft 5 being adapted to the outer side of the output shaft 3, and a connecting component and a positioning mechanism installed on the outer side of the connecting sleeve 4.

[0025] The connecting assembly includes a fixed ring 7, which is fixedly connected to the outer side of the connecting shaft 5. Multiple insertion holes 8 are provided on one side of the fixed ring 7. A turntable 9 is mounted on the outer side of the connecting cylinder 4. A rotating ring 10 is fixedly connected to the inner side of the turntable 9 and is rotatably connected to the outer side of the connecting cylinder 4. A threaded ring 11 is fixedly connected to one side of the turntable 9. A movable ring 12 is threadedly connected to the outer side of the threaded ring 11. Multiple connecting plates 13 are fixedly connected to one side of the movable ring 12. A slider 14 is fixedly connected to one side of the connecting plate 13. A movable block 15 is provided on the outer side of the slider 14. A groove 16 is provided on one side of the movable block 15, and the inner side of the groove 16 is slidably connected to the slider 14. A toothed plate 17 is fixedly connected to one end of the movable block 15, and the toothed plate 17 is inserted into the inner side of the insertion holes 8. During installation, the connecting shaft 5 can drive the multiple insertion holes 8 on one side of the fixed ring 7 to insert. On the outside of the connecting plate 13, by rotating the turntable 9, the turntable 9 can drive the threaded ring 11 to rotate. The threaded ring 11 can drive the movable ring 12 to move multiple connecting plates 13 through the thread. By using the contact surface of one side of the connecting plate 13 to fit with the contact surface of the movable block 15, the connecting plate 13 can push the movable block 15 to move through the pressure of the contact surface. The slider 14 slides on the inside of the groove 16 as a guide, so that the movable block 15 can drive the toothed plate 17 to insert one side of the toothed plate into the insertion hole 8. Thus, multiple toothed plates 17 can form multi-point contact limit inside the insertion hole 8, which can stably limit the connecting shaft 5 and more evenly distribute the huge impact force and torque generated by the impact wrench body 1 during operation, effectively reducing the loosening and falling off of the connecting shaft 5 during operation.

[0026] Reference Figure 2 and 3 As shown, the positioning mechanism includes multiple guide rods 18, which are fixedly connected to the inner side of the connecting cylinder 4. One end of the output shaft 3 is fixedly connected to a first strong magnet 19, and the inside of the connecting shaft 5 is fixedly connected to a second strong magnet 20. Multiple guide grooves 21 are opened on the outer side of the connecting shaft 5, and the guide grooves 21 are slidably connected to the outer side of the first strong magnet 19. The multiple guide rods 18 arranged in a cross shape can be used to position the connecting shaft 5 in the horizontal and vertical directions, which can reduce the offset or shaking of the connecting shaft 5 during operation. The magnetic attraction between the first strong magnet 19 and the second strong magnet 20 can also be used to position the connecting shaft 5, which helps to enhance the connection stability between the output shaft 3 and the connecting shaft 5.

[0027] Working principle of this utility model: This utility model designs a connection structure between the output shaft of an impact wrench and a sleeve. The specific structure is shown in the attached instruction manual. Figure 1-6As shown, in this technical solution, through the cooperation between various structures, when the connecting shaft 5 needs to be installed during the use of the impact wrench body 1, the multiple guide grooves 21 are first aligned with the outer side of the first strong magnet 19, so that the connecting shaft 5 can be quickly inserted into the outer side of the output shaft 3. The second strong magnet 20 and the first strong magnet 19 are magnetically attracted to each other, which can provide positioning for the installation of the connecting shaft 5, so that the connecting shaft 5 can drive the fixing ring 7 to be inserted into the outer side of the multiple connecting plates 13. Then, the turntable 9 is rotated, and the rotating ring 10 is rotatably connected to the inner side of the connecting cylinder 4, so that the turntable 9 can rotate stably, so that the turntable 9 can drive the threaded ring 11 to rotate. The threaded ring 11 can drive the movable ring 12 to rotate through the thread. The fixed ring 7 moves to one side, allowing the movable ring 12 to drive multiple connecting plates 13 to move. The connecting plates 13 can drive the slider 14 to slide inside the slide groove 16. By adapting one side of the connecting plate 13 to the side of the moving block 15, the connecting plate 13 can squeeze the moving block 15 when it moves, so as to push the moving block 15 to drive the toothed plate 17 to move. This allows multiple moving blocks 15 to drive the toothed plate 17 to be inserted into the insertion hole 8. By adapting one side of the toothed plate 17 to the inside of the insertion hole 8, multiple toothed plates 17 can limit the fixed ring 7, so as to fix the installation of the connecting shaft 5. Then, the impact wrench body 1 is started, and the sleeve 6 can be rotated by driving the output shaft 3.

[0028] In the accompanying drawings of the embodiments disclosed in this utility model, only the structures involved in the embodiments of this utility model are shown. Other structures can be referred to with ordinary design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0029] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are existing technologies and are therefore not shown in the figures and will not be described here.

[0030] In conclusion, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A connection structure between the output shaft and the sleeve of an impact wrench, comprising the impact wrench body (1), characterized in that: The impact wrench body (1) is equipped with a connector (2) at one end, and an output shaft (3) is installed at the output end of the connector (2). A connecting cylinder (4) is fixedly connected to one side of the connector (2), and a connecting shaft (5) is provided on one side of the connecting cylinder (4). The inner side of the connecting shaft (5) is adapted to the outer side of the output shaft (3), and a connecting component and a positioning mechanism are installed on the outer side of the connecting cylinder (4). The connecting assembly includes a fixing ring (7), which is fixedly connected to the outside of the connecting shaft (5). The fixing ring (7) has multiple insertion holes (8) on one side. A turntable (9) is installed on the outside of the connecting cylinder (4). A rotating ring (10) is fixedly connected to the inside of the turntable (9). The rotating ring (10) is rotatably connected to the outside of the connecting cylinder (4).

2. The connection structure between the output shaft and the sleeve of the impact wrench according to claim 1, characterized in that: A threaded ring (11) is fixedly connected to one side of the turntable (9), and a movable ring (12) is threadedly connected to the outside of the threaded ring (11). Multiple connecting plates (13) are fixedly connected to one side of the movable ring (12).

3. The connection structure between the output shaft and the sleeve of the impact wrench according to claim 2, characterized in that: A slider (14) is fixedly connected to one side of the connecting plate (13). A moving block (15) is provided on the outside of the slider (14). A groove (16) is provided on one side of the moving block (15). The inner side of the groove (16) is slidably connected to the slider (14).

4. The connection structure between the output shaft and the sleeve of the impact wrench according to claim 3, characterized in that: One end of the movable block (15) is fixedly connected to a toothed plate (17), and the toothed plate (17) is inserted into the inner side of the insertion hole (8).

5. The connection structure between the output shaft and the sleeve of the impact wrench according to claim 1, characterized in that: The positioning mechanism includes multiple guide rods (18), which are fixedly connected to the inner side of the connecting cylinder (4).

6. The connection structure between the output shaft and the sleeve of the impact wrench according to claim 1, characterized in that: One end of the output shaft (3) is fixedly connected to a first strong magnet (19), and the inside of the connecting shaft (5) is fixedly connected to a second strong magnet (20).

7. The connection structure between the output shaft and the sleeve of the impact wrench according to claim 1, characterized in that: Multiple guide grooves (21) are provided on the outer side of the connecting shaft (5), and the guide grooves (21) are slidably connected to the outer side of the first strong magnet (19).

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