A sleeve with a double-layer guiding function for automatically tightening and loosening bolts

Abstract

The present invention relates to a sleeve for automatically tightening and loosening bolts with a double-layer guiding function, which includes a sleeve body, a driving shaft, and an outer guiding assembly. One end of the sleeve body corresponding to the driving shaft is provided with a driving part, and the other end is provided with a clamping part. The driving shaft is coaxially arranged with the sleeve body and drives the sleeve body to rotate through the driving part. An inner layer spring is arranged between the sleeve body and the driving shaft. The outer guiding assembly includes an outer guiding member and an outer fixing member. The outer guiding member is sleeved outside the sleeve body. One end of the outer guiding member corresponding to the driving shaft is provided with an outer guiding groove. The outer fixing member is arranged between the outer guiding member and the driving shaft. The outer fixing member is sleeved outside the outer guiding member. One end of the outer fixing member corresponding to the outer guiding member is provided with an outer mating part adapted to the outer guiding groove. One end of the outer mating part is connected to the outer fixing member, and the other end is inserted into the outer guiding groove. By adopting the above technical solution, a flexible connection is adopted, and the requirement for precision is reduced.

Description

Technical Field

[0001] The present invention relates to the field of electric vehicles, and particularly to a sleeve for automatically tightening and loosening bolts with a double-layer guiding function. Background Art

[0002] The cruising range of an electric vehicle depends on the battery capacity. At present, the cruising range of ordinary electric vehicles does not exceed 300 kilometers, which to a certain extent restricts the development of electric vehicles. After the battery capacity is exhausted, electric energy needs to be replenished in time. The traditional method is for the electric vehicle to go to a nearby charging station for charging, which takes at least one or two hours and at most five or six hours. This period of time greatly affects the driving experience of the vehicle owner. At the same time, the charging cost and the long-term parking fee paid during charging are also a significant expense.

[0003] Adopting a quick-change battery pack for rapid replacement of the battery pack, replacing the traditional form of charging the battery at a charging station, can shorten the original charging time to 3 - 5 minutes. The speed of replenishing electric energy for the electric vehicle can be comparable to the time for refueling a traditional fuel vehicle, providing great convenience for the vehicle owner to use the vehicle. However, how to truly achieve fast, convenient, and simple replacement of the in-vehicle battery of an electric vehicle poses higher requirements for the automatic disassembly and assembly of the battery pack. Summary of the Invention

[0004] In summary, to overcome the deficiencies of the prior art, the present invention provides a sleeve for automatically tightening and loosening bolts with a double-layer guiding function, which is simple to operate and has high efficiency.

[0005] To achieve the above object, the present invention provides the following technical solution: A sleeve for automatically tightening and loosening bolts with a double-layer guiding function, comprising a sleeve body, a drive shaft, and an outer guiding assembly. One end of the sleeve body corresponding to the drive shaft is provided with a driving portion, and the other end is provided with a clamping portion. The drive shaft is coaxially arranged with the sleeve body and drives the sleeve body to rotate through the driving portion. An inner spring is arranged between the sleeve body and the drive shaft. The outer guiding assembly includes an outer guiding member and an outer fixing member. The outer guiding member is sleeved outside the sleeve body. One end of the outer guiding member corresponding to the drive shaft is provided with an outer guiding groove. The outer fixing member is arranged between the outer guiding member and the drive shaft. The outer fixing member is sleeved outside the outer guiding member. One end of the outer fixing member corresponding to the outer guiding member is provided with an outer mating member adapted to the outer guiding groove. One end of the outer mating member is connected to the outer fixing member, and the other end is inserted into the outer guiding groove.

[0006] By adopting the above technical solution, a spring is provided between the sleeve body and the drive shaft. Compared with the prior art which uses a rigid connection, in the process of the sleeve automatically tightening and loosening the bolt in the present invention, a flexible connection is adopted, so that the clamping part can be automatically aligned when cooperating with the nut of the bolt, reducing the requirement for precision. At the same time, when the outer guiding member expands and contracts up and down, the outer guiding member moves along the outer guiding groove thereof relative to the outer mating member fixed on the outer fixing member, playing a guiding role in the process of automatically tightening and loosening the bolt, with higher stability. The outer guiding grooves on the outer guiding member and the outer mating members on the outer fixing member appear in pairs, and there are not less than one pair during use. In the present invention, there are four pairs of such mechanisms for the outer guiding, which are symmetrically distributed in the radial direction.

[0007] The present invention is further provided with: an outer spring is provided between one end of the outer guiding member corresponding to the outer fixing member and the inner wall of the outer fixing member.

[0008] By adopting the above technical solution, when the outer guiding member expands and contracts up and down, the outer guiding member is reset by the outer spring, with simple operation and higher stability.

[0009] The present invention is further provided with: a convex portion is provided at one end of the outer guiding member corresponding to the outer fixing member, and an annular groove adapted to the outer spring is formed between the convex portion and the inner wall of the outer fixing member, and one end of the outer spring is clamped in the annular groove.

[0010] By adopting the above technical solution, a limiting effect is exerted on the outer spring, making the process of compression and reset of the outer spring more stable.

[0011] The present invention is further provided with: an inner guiding member is provided between the drive shaft and the sleeve body, a guiding channel is provided at one end of the driving portion corresponding to the inner guiding member, the inner guiding member includes a guiding portion and a connecting portion, the connecting portion is connected to the drive shaft, the guiding portion is arranged in the guiding channel, and the inner spring is arranged between the inner guiding member and the sleeve body.

[0012] By adopting the above technical solution, the drive shaft drives the guiding member to drive the sleeve to slide along the guiding channel to play a basic guiding role, with better stability.

[0013] The present invention is further provided with: the guiding portion is provided with an inner guiding groove, an inner mating member is provided at one end of the driving portion corresponding to the inner guiding member, and the inner mating member drives the sleeve body to slide up and down in the inner guiding groove.

[0014] By adopting the above technical solution, when the inner guide member moves up and down telescopically, the inner pin shaft on the sleeve moves relative to the inner guide groove on the inner guide member, and is reset by the inner spring, so that the sleeve further strengthens the guiding effect during the process of automatically tightening and loosening the bolt, making the fit between the sleeve and the bolt closer, not easily detaching, and having higher stability.

[0015] The present invention is further provided that: the guiding portion is square-shaped, and the guiding channel is adapted to the guiding portion.

[0016] By adopting the above technical solution, the cooperation between the two is made more stable.

[0017] The present invention is further provided that: the connecting portion is provided with a connecting groove, the driving shaft includes a connecting end disposed in the connecting groove and a driving end for cooperating with a driving mechanism, the connecting end is square-shaped, the connecting groove is adapted to the connecting end, the connecting portion and the connecting end are connected by a fixing member, the connecting portion is provided with a fixing channel adapted to the fixing member, and the connecting end is provided with a fixing groove adapted to the fixing member at a position corresponding to the fixing channel.

[0018] By adopting the above technical solution, the driving shaft is driven by a motor, the driving shaft transmits force to the inner guide member, the inner guide member drives the sleeve to tighten and loosen the screw, and the driving shaft and the guide member are fixed by a fixing member, making the rotation of the two more coordinated, not easily slipping, and operating more stably.

[0019] The present invention is further provided that: the clamping portion is provided with a chamfer adapted to the top chamfer of the bolt.

[0020] By adopting the above technical solution, the sleeve can automatically adapt to the bolts on the vehicle, that is, the sleeve is inserted onto the nut of the bolt, and a corresponding chamfer structure is made on the sleeve and the top of the bolt. Under the pre-tightening force of the inner guiding spring, the chamfer on the sleeve cooperates with the top chamfer of the bolt. When the sleeve starts to rotate to tighten and loosen the bolt, when the inner teeth on the sleeve correspond to the outer teeth on the bolt, the sleeve is inserted onto the nut of the bolt under the pre-tightening force.

[0021] The following describes the specific embodiments of the present invention in conjunction with the drawings and embodiments. Description of the Drawings

[0022] Figure 1 It is a perspective view of an embodiment of the present invention;

[0023] Figure 2 It is a sectional view of an embodiment of the present invention;

[0024] Figure 3 It is a sectional view of the natural state of the outer guiding assembly of an embodiment of the present invention;

[0025] Figure 4 Cross-sectional view of the outer layer guiding component in the compressed state of the embodiment of the present invention;

[0026] Figure 5 External view and cross-sectional view of the local structure of the embodiment of the present invention in the natural state;

[0027] Figure 6 External view and cross-sectional view of the local structure of the embodiment of the present invention in the compressed state;

[0028] Figure 7 Cross-sectional view of the drive shaft and the inner layer guiding member of the embodiment of the present invention.

[0029] Reference numerals: 1. Sleeve body, 11. Driving part, 111. Guiding channel, 12. Clamping part, 2. Drive shaft, 21. Connection end, 211. Fixed groove, 22. Driving end, 3. Inner layer spring, 4. Outer layer guiding component, 41. Outer layer guiding member, 411. Outer layer guiding groove, 412. Convex part, 413. Ring groove, 42. Outer layer fixing member, 43. Outer layer fitting member, 5. Outer layer spring, 6. Inner layer guiding member, 61. Guiding part, 611. Inner layer guiding groove, 62. Connection part, 621. Connection groove, 622. Fixed channel, 7. Inner layer fitting member, 8. Fixing member. Detailed implementation manners

[0030] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

[0031] See the attached Figures 1-7, a sleeve for automatically tightening and loosening bolts with a double-layer guiding function disclosed in this embodiment, includes a sleeve body 1, a driving shaft 2, and an outer guiding assembly 4. One end of the sleeve body 1 corresponding to the driving shaft 2 is provided with a driving part 11, and the other end is provided with a clamping part 12. The driving shaft 2 is coaxially arranged with the sleeve body 1 and drives the sleeve body 1 to rotate through the driving part 11. An inner spring 3 is arranged between the sleeve body 1 and the driving shaft 2. The outer guiding assembly 4 includes an outer guiding member 41 and an outer fixing member 842. The outer guiding member 41 is sleeved outside the sleeve body 1. One end of the outer guiding member 41 corresponding to the driving shaft 2 is provided with an outer guiding groove 411. The outer fixing member 842 is arranged between the outer guiding member 41 and the driving shaft 2. The outer fixing member 842 is sleeved outside the outer guiding member 41. One end of the outer fixing member 842 corresponding to the outer guiding member 41 is provided with an outer mating part 43 adapted to the outer guiding groove 411. One end of the outer mating part 43 is connected to the outer fixing member 842, and the other end is inserted into the outer guiding groove 411.

[0032] This embodiment is further provided that: an outer spring 5 is arranged between one end of the outer guiding member 41 corresponding to the outer fixing member 842 and the inner wall of the outer fixing member 842.

[0033] This embodiment is further provided that: one end of the outer guiding member 41 corresponding to the outer fixing member 842 is provided with a convex part 412. A ring groove 413 adapted to the outer spring 5 is formed between the convex part 412 and the inner wall of the outer fixing member 842. One end of the outer spring 5 is clamped in the ring groove 413.

[0034] This embodiment is further provided that: an inner guiding member 6 is arranged between the driving shaft 2 and the sleeve body 1. One end of the driving part 11 corresponding to the inner guiding member 6 is provided with a guiding channel 111. The inner guiding member 6 includes a guiding part 61 and a connecting part 62. The connecting part 62 is connected to the driving shaft 2. The guiding part 61 is arranged in the guiding channel 111. The inner spring 3 is arranged between the inner guiding member 6 and the sleeve body 1.

[0035] This embodiment is further provided that: the guiding part 61 is provided with an inner guiding groove 611. One end of the driving part 11 corresponding to the inner guiding member 6 is provided with an inner mating part 7. The inner mating part 7 drives the sleeve body 1 to slide up and down in the inner guiding groove 611.

[0036] This embodiment is further provided that: the guiding part 61 is square-shaped and the guiding channel 111 is adapted to the guiding part 61.

[0037] This embodiment is further configured such that: the connecting portion 62 is provided with a connecting groove 621, the driving shaft 2 includes a connecting end 21 disposed in the connecting groove 621 and a driving end 22 for cooperating with a driving mechanism, the connecting end 21 is square-shaped, the connecting groove 621 is adapted to the connecting end 21, the connecting portion 62 and the connecting end 21 are connected by a fixing member 8, the connecting portion 62 is provided with a fixing channel 622 adapted to the fixing member 8, and a fixing groove 211 adapted to the fixing member 8 is disposed at a position of the connecting end 21 corresponding to the fixing channel 622.

[0038] This embodiment is further configured such that: the clamping portion 12 is provided with a chamfer adapted to the chamfer at the top of the bolt.

[0039] The above-mentioned "between" not only refers to the between of directions and positions, but also includes the meaning of the interaction between different parts.

[0040] Although terms such as sleeve body 1, driving portion 11, guiding channel 111, clamping portion 12, driving shaft 2, connecting end 21, fixing groove 211, driving end 22, inner layer spring 3, outer layer guiding assembly 4, outer layer guiding member 41, outer layer guiding groove 411, convex portion 412, annular groove 413, outer layer fixing member 842, outer layer cooperating member 43, outer layer spring 5, inner layer guiding member 6, guiding portion 61, inner layer guiding groove 611, connecting portion 62, connecting groove 621, fixing channel 622, inner layer cooperating member 7, fixing member 8 are used more frequently in this article, the possibility of using other terms is not excluded. Using these terms is only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A sleeve for automatically tightening and loosening bolts with double-layer guiding function, Characterized in that: It includes a sleeve body, a driving shaft and an outer guiding component. One end of the sleeve body corresponding to the driving shaft is provided with a driving part, and the other end is provided with a clamping part. The driving shaft is coaxially arranged with the sleeve body and drives the sleeve body to rotate through the driving part. An inner spring is arranged between the sleeve body and the driving shaft. The outer guiding component includes an outer guiding piece and an outer fixing piece. The outer guiding piece is sleeved outside the sleeve body. One end of the outer guiding piece corresponding to the driving shaft is provided with an outer guiding groove. The outer fixing piece is arranged between the outer guiding piece and the driving shaft. The outer fixing piece is sleeved outside the outer guiding piece. One end of the outer fixing piece corresponding to the outer guiding piece is provided with an outer matching piece adapted to the outer guiding groove. One end of the outer matching piece is connected to the outer fixing piece, and the other end is inserted into the outer guiding groove. An outer spring is arranged between one end of the outer guiding piece corresponding to the outer fixing piece and the inner wall of the outer fixing piece. The clamping part is provided with a chamfer adapted to the top chamfer of the bolt; One end of the outer guiding piece corresponding to the outer fixing piece is provided with a convex part, and a ring groove adapted to the outer spring is formed between the convex part and the inner wall of the outer fixing piece. One end of the outer spring is clamped in the ring groove.

2. The sleeve for automatically tightening and loosening bolts with double-layer guiding function according to claim 1, Characterized in that: An inner guiding piece is arranged between the driving shaft and the sleeve body. One end of the driving part corresponding to the inner guiding piece is provided with a guiding channel. The inner guiding piece includes a guiding part and a connecting part. The connecting part is connected to the driving shaft. The guiding part is arranged in the guiding channel. The inner spring is arranged between the inner guiding piece and the sleeve body.

3. The sleeve for automatically tightening and loosening bolts with double-layer guiding function according to claim 2, Characterized in that: The guiding part is provided with an inner guiding groove. One end of the driving part corresponding to the inner guiding piece is provided with an inner matching piece, and the inner matching piece drives the sleeve body to slide up and down in the inner guiding groove.

4. The sleeve for automatically tightening and loosening bolts with double-layer guiding function according to claim 2, Characterized in that: The guiding part is square, and the guiding channel is adapted to the guiding part.

5. The sleeve for automatically tightening and loosening bolts with double-layer guiding function according to claim 2, Characterized in that: The connecting part is provided with a connecting groove. The driving shaft includes a connecting end arranged in the connecting groove and a driving end for cooperating with a driving mechanism. The connecting end is square. The connecting groove is adapted to the connecting end. The connecting part and the connecting end are connected by a fixing piece. The connecting part is provided with a fixing channel adapted to the fixing piece. The connecting end is provided with a fixing groove adapted to the fixing piece at a position corresponding to the fixing channel.

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