A fast battery-changing lock body for electric vehicles

Abstract

The present invention relates to a fast battery replacement lock body for electric vehicles, including a fixed seat and a plug-in module plugged with the fixed seat, the lock pin body of the plug-in module is divided into a lock pin head and a lock pin tail, a positioning steel ball, an ejection block and a lock pin screw are arranged in the hollow interior of the lock pin body, the threaded section of the lock pin screw is threadedly connected to the lock pin body, the top pressure section and the top pressure ejection block push the positioning steel ball to form a locking match with the fixed seat, the bottom bolt head is linked to the driving section, the upper end of the bottom bolt head is provided with a positioning convex ring on the outer periphery, the positioning convex ring is formed outside the outer bevel gear ring, the bottom bolt head outer sleeve is connected with a fixing nut, the fixing nut is threadedly connected with the outer peripheral wall of the lock pin tail, the lower end of the fixing nut is provided with a positioning ring cover to match the positioning convex ring, and the lower end inner periphery of the fixing nut is provided with an inner bevel gear ring to match the outer bevel gear ring. Through the above-mentioned specific design, the present invention has the advantages of compact structure, stable connection of power battery packs, high installation accuracy, convenient assembly and disassembly, and high reliability.

Description

Technical Field

[0001] The invention relates to a quick-battery-changing lock body for an electric vehicle. Background Art

[0002] Electric vehicles use power batteries as energy storage mechanisms, and the rear axle is driven by an electric motor. Currently, due to the influence of battery materials, the efficiency of power battery charging is still low, and it is impossible to complete fast charging in a short time to ensure the vehicle's endurance. Therefore, fast battery replacement is an effective way to ensure vehicle endurance. The power battery pack is the energy storage device of electric vehicles and the power core of electric vehicles. The reliable fixation of the power battery pack on the electric vehicle is the primary condition to ensure driving safety and normal operation of the vehicle. At present, the power battery packs of most electric vehicles are generally installed under the chassis of the vehicle. The traditional battery replacement lock has a complex structure and is inconvenient to use, and cannot achieve the rapid replacement of the power battery pack. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an electric vehicle quick battery change lock body, which has a compact structure, a stable connection, is easy to operate and use, and has high reliability.

[0004] The technical solution adopted by the present invention to solve the technical problem is: it includes a fixed seat and a plug-in module plugged with the fixed seat, a plug-in positioning ring is provided in the fixed seat, the plug-in module includes a lock pin body, the lock pin body is hollow inside, and is divided into a lock pin head and a lock pin tail by an isolation convex ring on the outside, a positioning hole is provided on the peripheral wall of the lock pin head, a positioning steel ball, an ejection block and a lock pin screw are provided in the hollow inside of the lock pin body, the lock pin screw is divided into a driving section, a threaded section and a top pressure section, the threaded section is threadedly connected to the inner cavity wall of the lock pin body, and the top pressure section top presses the ejection block The ejection block pushes the positioning steel ball to protrude out of the positioning hole and form a locking fit with the plug-in positioning ring. The driving section extends outside the locking pin body and forms a positioning plug-in fit with the bottom bolt head. The bottom bolt head links the driving section. A positioning convex ring is arranged on the outer periphery of the upper end of the bottom bolt head. An outer bevel gear ring is formed outside the positioning convex ring. A fixing nut is connected to the outer peripheral wall of the tail of the locking pin through threads. A positioning ring cover is arranged at the lower end of the fixing nut to match the positioning convex ring. An inner bevel gear ring is arranged on the inner periphery of the lower end of the fixing nut to match the outer bevel gear ring.

[0005] The ejector block is in the shape of a square column, and conical grooves are arranged on the four cylindrical surfaces to push and fit with the positioning steel balls. An arc convex surface is arranged at the bottom of the ejector block, the diameter of the pressing section is smaller than the threaded section and an arc concave surface is arranged at the top, and the arc convex surface and the arc concave surface form a positioning pressing fit.

[0006] A positioning ring groove and a positioning groove are respectively provided in the middle and lower parts of the locking pin body. An elastic retaining ring is provided at the positioning ring groove. The pressing section of the locking pin screw passes through the elastic retaining ring, and the upper end face of the threaded section presses the elastic retaining ring. An anti-retraction retaining ring is provided at the positioning groove. The diameter of the driving section is smaller than that of the threaded section and an anti-retraction spring is arranged on the outer sleeve. The anti-retraction spring is limited and pressed between the anti-retraction retaining ring and the lower end face of the threaded section.

[0007] A spring groove is arranged at the upper end of the lock pin body, a top spring is installed in the spring groove, and the top spring presses on the ejection block.

[0008] Through the above-mentioned specific design, the present invention has the advantages of compact structure, stable connection of the power battery pack, high installation accuracy, convenient assembly and disassembly, and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0010] Figure 1 It is a schematic diagram of the assembly structure of the present invention.

[0011] Figure 2 It is a structural schematic diagram of the plug-in module in the present invention.

[0012] Figure 3 It is a structural schematic diagram of the fixing seat in the present invention.

[0013] Figure 4 It is a structural schematic diagram of the lock pin body in the present invention.

[0014] Figure 5 It is a schematic structural diagram of the ejection block in the present invention.

[0015] Figure 6 It is a structural schematic diagram of the locking pin screw in the present invention.

[0016] Figure 7 It is a structural schematic diagram of the bottom bolt head in the present invention.

[0017] Figure 8 It is a structural schematic diagram of the fixing nut in the present invention.

[0018] In the figure: fixing seat 1, plug-in module 2, plug-in positioning ring 3, locking pin body 4, isolating convex ring 5, locking pin head 6, positioning hole 7, steel ball 8, ejector block 9, locking pin screw 10, driving section 11, threaded section 12, top pressure section 13, bottom bolt head 14, positioning convex ring 15, outer bevel gear ring 16, fixing nut 17, positioning ring cover 18, inner bevel gear ring 19, conical groove 20, arc convex surface 21, arc concave surface 22, positioning ring groove 23, positioning groove 24, elastic retaining ring 25, anti-retraction retaining ring 26, anti-retraction spring 27, spring groove 28, locking pin tail 29, top spring 30, cover plate 31, positioning arc convex 32. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0020] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0021] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0022] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] As shown in the figure, the present invention includes a fixing seat 1 and a plug-in module 2 plugged with the fixing seat 1, a plug-in positioning ring 3 is provided in the fixing seat 1, and a back fixing cover plate 31 is provided on the fixing seat 1. The plug-in module 2 includes a locking pin body 4, the locking pin body 4 is hollow inside, and is divided into a locking pin head 6 and a locking pin tail 29 by an isolating convex ring 5 on the outside, a positioning hole 7 is provided on the peripheral wall of the locking pin head 6, and a positioning steel ball 8, an ejection block 9 and a locking pin screw 10 are provided in the hollow inside of the locking pin body 4, and the locking pin screw 10 is divided into a driving section 11, a threaded section 12 and a pressing section 13, the threaded section 12 is threadedly connected to the inner cavity wall of the locking pin body 4, the pressing section 13 presses the ejection block 9, and the ejection block 9 pushes the positioning steel ball 8 to protrude out of the positioning hole 7 to form a locking engagement with the plug-in positioning ring 3. The driving section 11 extends outside the locking pin body 4 and forms a positioning plug-in fit with the bottom bolt head 14. The bottom bolt head 14 links the driving section 11. A positioning convex ring 15 is provided on the outer periphery of the upper end of the bottom bolt head 14. An outer bevel gear ring 16 is formed outside the positioning convex ring 15. The outer sleeve of the bottom bolt head 14 is connected with a fixing nut 17. The fixing nut 17 is threadedly connected with the outer peripheral wall of the locking pin tail 29. A positioning ring cover 18 is provided at the lower end of the fixing nut 17 to match the positioning convex ring 15. An inner bevel gear ring 19 is provided at the inner periphery of the lower end of the fixing nut 17 to match the outer bevel gear ring 16. The ejection block 9 is a square column. Conical grooves 20 are provided on the four cylindrical surfaces to push and fit with the positioning steel ball 8. The bottom of the ejection block 9 is provided with an arc convex surface 21. The diameter of the top pressing section 13 is smaller than that of the threaded section 12 and a circular arc concave surface 22 is provided on the top. The arc convex surface 21 and the arc concave surface 22 form a positioning top pressing fit. The fit of the arc surface makes the top pressing more flexible and reliable. A positioning ring groove 23 and a positioning groove 24 are respectively provided in the middle and lower part of the lock pin body 4. An elastic retaining ring 25 is provided at the positioning ring groove 23. The top pressing section 13 of the lock pin screw 10 passes through the elastic retaining ring 25. The upper end surface of the threaded section 12 presses against the elastic retaining ring 25. An anti-retraction retaining ring 26 is provided at the positioning groove 24. The diameter of the driving section 11 is smaller than that of the threaded section 12 and the outer sleeve anti-retraction spring 27 is limited and pressed between the anti-retraction retaining ring 26 and the lower end surface of the threaded section 12. The setting of the elastic retaining ring 25 and the anti-retraction spring 27 has the function of stabilizing the lock pin screw 10 to prevent loosening. A spring groove 28 is provided at the upper end of the lock pin body 4. A top spring 30 is installed in the spring groove 28. The top spring 30 presses against the ejection block 9.When performing the locking operation, the lock pin head 6 is inserted into the plug-in positioning ring 3 of the fixed seat 1, and the bottom bolt head 14 is rotated. The bottom bolt head 14 causes the threaded section 12 of the lock pin screw 10 to rotate and rise in the lock pin body 4 through the driving section 11. The arc concave surface 22 of the top pressing section 13 of the lock pin screw 10 cooperates with the arc convex surface 21 at the bottom of the ejection block 9 to push the ejection block 9 to rise, and the top spring 30 is compressed. The conical groove 20 of the ejection block 9 pushes the positioning steel ball 8, so that a part of the positioning steel ball 8 protrudes from the positioning hole 7 and enters the plug-in positioning ring 3, and is fixed by the positioning arc convex 32 set at the ring mouth of the plug-in positioning ring 3, so that the fixed seat 1 and the plug-in module 2 complete the locking connection, and continue to tighten the fixing nut 17. The lower end of the fixing nut 17 is provided with a positioning ring cover 18 to cooperate with the positioning convex ring 15. The inner bevel gear ring 19 of the fixing nut 17 is meshed with the outer bevel gear ring 16 of the bottom bolt head 14 to prevent the bottom bolt head 14 from loosening. When performing the unlocking operation, first loosen the fixing nut 17, and the inner bevel gear ring 19 of the fixing nut 17 is disengaged from the outer bevel gear ring 16 of the bottom bolt head 14. Then, the bottom bolt head 14 is rotated in the opposite direction, and the bottom bolt head 14 causes the locking pin screw 10 to rotate and descend as a whole in the locking pin body 4 through the driving section 11. The ejection block 9 slides down under the action of the top spring 30, and the conical groove 20 of the ejection block 9 gradually disengages from the positioning steel ball 8, and the positioning steel ball 8 loses the positioning pressure. When the locking pin head 6 is pulled out from the plug-in positioning ring 3, the positioning steel ball 8 retreats into the positioning hole 7, and the fixing seat 1 and the plug-in module 2 are separated, and the unlocking is completed.

[0024] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. A quick battery-changing lock body for electric vehicles, characterized in that The invention comprises a fixing seat (1) and a plug-in module (2) pluggable with the fixing seat (1), wherein a plug-in positioning ring (3) is provided in the fixing seat (1), and the plug-in module (2) comprises a locking pin body (4), wherein the locking pin body (4) is hollow inside and is divided into a locking pin head (6) and a locking pin tail (29) by an isolating convex ring (5) on the outside, and a positioning hole (7) is provided on the peripheral wall of the locking pin head (6), and a positioning steel ball (8), an ejection block (9) and a locking pin screw (10) are provided in the hollow inside of the locking pin body (4), and the locking pin screw (10) is divided into a driving section (11), a threaded section (12) and a pressing section (13), and the threaded section (12) is provided with a locking pin head (6) and a locking pin tail (29). (12) is threadedly connected with the inner cavity wall of the lock pin body (4), the pressing section (13) presses the ejection block (9), the ejection block (9) pushes the positioning steel ball (8) to protrude outside the positioning hole (7) and form a locking fit with the plug-in positioning ring (3), the driving section (11) extends outside the lock pin body (4) and forms a positioning plug-in fit with the bottom bolt head (14), the bottom bolt head (14) is linked to the driving section (11), the upper end of the bottom bolt head (14) is provided with a positioning convex ring (15) on the outer periphery, the positioning convex ring (15) is formed with an outer bevel gear ring (16), the outer cover of the bottom bolt head (14) is connected with a fixing nut (17), the fixing nut (17) is threadedly connected to the outer peripheral wall of the lock pin tail (29), the lower end of the fixing nut (17) is provided with a positioning ring cover (18) that matches the positioning convex ring (15), the inner circumference of the lower end of the fixing nut (17) is provided with an inner bevel gear ring (19) that matches the outer bevel gear ring (16), the ejection block (9) is a square column, and conical grooves (20) are provided on the four cylindrical surfaces to push and match with the positioning steel ball (8), the bottom of the ejection block (9) is provided with an arc convex surface (21), the diameter of the top pressure section (13) is smaller than the thread section (12) and the top is provided with an arc concave surface (22), the arc convex surface (21) and the arc concave surface (22) are provided. 2) forming a positioning press fit, a positioning ring groove (23) and a positioning groove (24) are respectively provided in the middle and lower parts of the lock pin body (4), an elastic retaining ring (25) is provided at the positioning ring groove (23), the pressing section (13) of the lock pin screw (10) passes through the elastic retaining ring (25), the upper end surface of the threaded section (12) presses against the elastic retaining ring (25), an anti-retraction retaining ring (26) is provided at the positioning groove (24), the diameter of the driving section (11) is smaller than that of the threaded section (12) and the outer sleeve anti-retraction spring (27), and the anti-retraction spring (27) is limitedly pressed between the anti-retraction retaining ring (26) and the lower end surface of the threaded section (12).

2. The electric vehicle quick battery change lock body according to claim 1 is characterized in that A spring groove (28) is provided at the upper end of the lock pin body (4), a top spring (30) is installed in the spring groove (28), and the top spring (30) presses against the ejection block (9).

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