CN217435494U

CN217435494U - Lock body subassembly, battery package, locking mechanism and vehicle

Info

Publication number: CN217435494U
Application number: CN202221593235.2U
Authority: CN
Inventors: 蒋舒; 张宁; 杨潮
Original assignee: Weilai Automobile Technology Anhui Co Ltd
Current assignee: Weilai Automobile Technology Anhui Co Ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2022-09-16
Anticipated expiration: 2032-06-20

Abstract

The utility model relates to an electric automobile technical field, concretely relates to lock body subassembly, battery package, locking mechanism and vehicle. The problem that the durability and the reliability of current locking mechanism are poor, the change is maintained the degree of difficulty and is big is aimed at solving to this application. The lock body subassembly of this application includes: the mounting seat is of a cylindrical structure, the bottom of the mounting seat is open, and the top of the mounting seat is provided with a mounting hole; the anti-loosening mechanism comprises a limiting part and a sleeve part, the limiting part is detachably connected to the mounting seat and is provided with a first through hole and a first joint structure, the sleeve part is provided with a second through hole and a second joint structure, and a third joint structure is arranged in the second through hole; the connecting piece is provided with an adjusting part and a fastening part, the adjusting part can be arranged in a movable mode, a fourth joint structure is arranged on the adjusting part, the sleeve joint piece is sleeved on the adjusting part, and the upper part of the fastening part can penetrate through the mounting hole and is screwed to a target fastening piece; and the anti-loosening piece is arranged between the adjusting part and the inner wall of the top of the mounting seat. This application can improve lock body subassembly durability and connection reliability, reduces and maintains the degree of difficulty.

Description

Lock body subassembly, battery package, locking mechanism and vehicle

Technical Field

The utility model relates to an electric automobile technical field, concretely relates to lock body subassembly, battery package, locking mechanism and vehicle.

Background

The battery replacement is one of the important energy supplementing ways of the current electric automobile, and the battery replacement time can be controlled within 3 minutes generally and is close to the refueling time of the traditional fuel vehicle, so that the battery replacement is more and more favored by users. In the battery replacement scheme, a locking mechanism for connecting a vehicle body and a battery pack is an important ring for realizing vehicle-electricity separation, the durability and the connection reliability of the locking mechanism directly determine the battery replacement experience of a user, and whether the scheme can be widely applied or not.

In current locking mechanisms for connecting a vehicle body to a battery pack, a lock body assembly is typically fixedly attached to the battery pack and threadably engaged with a corresponding threaded fastener in a lock assembly via a threaded connector. However, in practical application, as the number of times of use increases, the degree of wear between the flange surface of the threaded connecting piece and the pressure-bearing surface of the connected piece gradually deepens, which affects the service lives of the threaded connecting piece and the connected piece, and the connection reliability of the threaded connecting piece. And the lock body assembly is difficult to replace and maintain due to the arrangement mode of the fixed connection of the lock body assembly.

Accordingly, there is a need in the art for a new solution to the above problems.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one above-mentioned problem among the prior art, for solve the durability and the reliability of current locking mechanism poor, change the problem that the maintenance degree of difficulty is big, this application provides a lock body subassembly, the lock body subassembly includes:

the mounting seat is of a cylindrical structure, the bottom of the mounting seat is open, and the top of the mounting seat is provided with a mounting hole;

the locking mechanism comprises a limiting part and a sleeve joint part, the limiting part is detachably connected to the bottom of the installation seat and surrounds the installation seat to form an accommodating cavity, a first through hole is formed in the middle of the limiting part and is set to allow a locking and unlocking head to pass through, a first joint structure is further arranged on the limiting part, the sleeve joint part can be arranged in the accommodating cavity in a moving mode along the axial direction of the sleeve joint part, the bottom of the sleeve joint part can be in butt joint with the locking and unlocking head, a second joint structure is arranged outside the sleeve joint part and can be in joint with the first joint structure, so that the sleeve joint part is limited to rotate relative to the limiting part in the circumferential direction, a second through hole is formed in the middle of the sleeve joint part, and a third joint structure is arranged inside the second through hole;

a connecting member having an adjusting portion and a fastening portion connected to each other, the adjusting portion being movably disposed in the accommodating cavity along an axial direction thereof and being capable of being lifted by the socket member, the adjusting portion being provided with a fourth engaging structure, the adjusting portion allowing the socket member to be sleeved thereon, and when the socket member is sleeved on the adjusting portion, the third engaging structure being engaged with the fourth engaging structure so as to restrict circumferential relative rotation of the connecting member with respect to the socket member, an upper portion of the fastening portion being capable of passing through the mounting hole and being rotatably fastened to a target fastener;

an anti-loosening member disposed between the adjustment portion and the top inner wall of the mount, the anti-loosening member being disposed to be squeezed between the adjustment portion and the top inner wall of the mount when the fastening portion is rotationally fastened with the target fastener, and to have no relative rotation with the top inner wall of the mount.

In a preferred technical solution of the above lock body assembly, the anti-loose member is a washer fixedly connected to an inner wall of a top portion of the mount base.

In the preferable technical scheme of the lock body assembly, the gasket is provided with a countersunk hole, the inner wall of the top of the mounting seat is provided with a threaded hole, and a countersunk screw penetrates through the countersunk hole and then is in threaded connection with the threaded hole to realize that the gasket is fixedly connected with the inner wall of the top of the mounting seat.

In a preferred technical solution of the above lock body assembly, an upper portion of the fastening portion is a threaded section, and the threaded section can pass through the mounting hole and be screwed to the target fastener.

In a preferred embodiment of the above lock body assembly, the anti-loose member is a washer, the washer is sleeved on a lower portion of the fastening portion, and a roughness of an upper surface of the washer is greater than a roughness of a lower surface of the washer.

In the preferable technical scheme of the lock body assembly, the friction coefficient between the upper surface of the washer and the inner wall of the top of the mounting seat is 2.0-2.5 times of the friction coefficient between the lower surface of the washer and the adjusting part.

In the preferable technical scheme of the lock body assembly, the lower part of the fastening part is an optical axis section, the upper end of the optical axis section is connected with the thread section, the lower end of the optical axis section is connected with the adjusting part, and the gasket is sleeved on the optical axis section.

In a preferred embodiment of the above lock body assembly, an outer diameter of the optical axis section is smaller than an outer diameter of the thread section, and an inner diameter of the washer is smaller than the outer diameter of the thread section.

In a preferred technical solution of the above lock body assembly, the locking member includes:

the first gasket is annular and is sleeved at the lower part of the fastening part, a first radial convex line is formed on the upper surface of the first gasket, and a first wedge-shaped surface is formed on the lower surface of the first gasket along the circumferential direction;

the second gasket is used in pair with the first gasket, the second gasket is annular and is sleeved below the first gasket, a second radial convex pattern is formed on the lower surface of the second gasket, a second wedge-shaped surface matched with the first wedge-shaped surface is formed on the upper surface of the second gasket along the circumferential direction,

when the fastening part is rotationally fastened with the target fastener, the first radial convex ridge and the top inner wall of the mounting seat are pressed against each other, the second radial convex ridge and the adjusting part are pressed against each other, and the first wedge surface and the second wedge surface are pressed against each other.

In a preferred embodiment of the lock body assembly, a friction coefficient between the first radial rib and the top inner wall of the mounting seat is 2.0 to 2.5 times a friction coefficient between the first wedge-shaped surface and the second wedge-shaped surface; and/or

The coefficient of friction between the second radial ribs and the regulating portion is 2.0 to 2.5 times the coefficient of friction between the first wedge-shaped surfaces and the second wedge-shaped surfaces.

In a preferred embodiment of the above lock body assembly, the upper portion of the fastening portion is a threaded section, and the threaded section can pass through the mounting hole and be screwed to the target fastener.

In a preferred embodiment of the lock body assembly, the first wedge-shaped surface and the second wedge-shaped surface have slopes greater than a lead angle of the thread section.

In the preferable technical scheme of the lock body assembly, the lower part of the fastening part is an optical axis section, the upper end of the optical axis section is connected with the thread section, the lower end of the optical axis section is connected with the adjusting part, and the optical axis section is sleeved with the first gasket and the second gasket.

In a preferred technical solution of the above lock body assembly, an outer diameter of the optical axis section is smaller than a thread outer diameter of the thread section, and annular inner diameters of the first spacer and the second spacer are both smaller than the thread outer diameter of the thread section.

In a preferred technical solution of the above lock body assembly, the threaded section is a coarse thread.

In a preferred embodiment of the lock body assembly, the surface hardness of the anti-loose member is greater than the surface hardness of the connecting member.

In the preferable technical scheme of the lock body assembly, the surface hardness of the anti-loosening piece is 460-510 HV.

In the preferable technical scheme of the lock body assembly, the first engaging structure is arranged on the top surface of the limiting part, the outer edge of the top of the sleeve member extends outwards to form a flange, and the second engaging structure is arranged on the lower surface of the flange.

In a preferred technical solution of the above lock body assembly, the first engagement structure is an inner bevel gear, and the second engagement structure is an outer bevel gear.

In a preferred technical solution of the above lock body assembly, an outer diameter of the flange is substantially equal to an inner diameter of the mounting seat.

In a preferred embodiment of the above lock body assembly, the adjusting portion includes a flange section and a docking section, an upper surface of the flange section is connected to the fastening portion, a lower surface of the flange section is connected to the docking section, and the fourth engaging structure is disposed on the docking section.

In a preferred technical solution of the above lock body assembly, the third engagement structure is a spline groove, and the fourth engagement structure is a spline.

In a preferred technical solution of the above lock body assembly, the anti-loosening mechanism further includes an elastic member, two ends of the elastic member respectively abut against the top surface of the socket member and the inner wall of the top of the mounting seat, and the elastic member is set to have elastic potential energy capable of enabling the socket member to move toward the limiting member all the time.

In a preferred embodiment of the above lock body assembly, in a state where the fastening portion is not fastened to the target fastener, the adjusting portion is configured to abut against the socket under the action of gravity, and an upper portion of the connecting member protrudes through the mounting hole.

The application also provides a battery pack, the battery pack includes the shell, be provided with any one of above-mentioned preferred technical scheme the lock body subassembly on the shell.

The application also provides a locking mechanism, the locking mechanism comprises a locking assembly and the lock body assembly in any one of the above-mentioned preferred technical schemes, and the lock body assembly is matched and connected with the locking assembly.

In a preferred embodiment of the locking mechanism, the locking assembly includes a fixed plate that is fixedly connectable to the vehicle, a floating plate that is floatably provided on the fixed plate, and a locking member that is fixedly provided on the floating plate.

The application also provides a vehicle, the vehicle includes automobile body, battery package and above-mentioned preferred technical scheme any locking mechanical system, the battery package pass through locking mechanical system with the automobile body is connected.

The utility model provides a preferred technical scheme is through setting up the anti-loosening piece between the top inner wall at regulating part and mount pad, can improve the durability and the connection reliability of lock body subassembly, increase of service life reduces and maintains the degree of difficulty. Specifically, current locking mechanism is at the locking in-process, and the top inner wall of mount pad directly produces the friction with the connecting piece as the bearing surface, can lead to the top inner wall degree of wear of connecting piece and mount pad to increase in the past to because the mount pad of lock body subassembly direct fixed connection is usually on the battery package the mode that sets up, still make the inconvenient change of mount pad after the wearing and tearing. And this application can shift the wearing surface between anti-loosening piece and the connecting piece by between connecting piece and the mount pad top inner wall through setting up anti-loosening piece between the top inner wall at regulating part and mount pad to the degree of wear of the mount pad top inner wall that significantly reduces plays the effect of protection mount pad. Moreover, compared with a mounting seat, the connecting piece and the anti-loosening piece are more convenient to replace, and the maintenance difficulty and the maintenance cost of the lock body assembly can be reduced.

And the arrangement of the anti-loosening piece also enables the attenuation of the pretightening force of the connecting piece after multiple times of locking and unlocking to be kept within a certain range, and the pretightening force of the connecting piece changes less along with the increase of the use times under the set locking torque, so that the connection is more reliable. In addition, the anti-loosening element can form double anti-loosening functions together with the anti-loosening mechanism, and the connection reliability of the lock body assembly is ensured.

Furthermore, the gasket is fixedly connected to the inner wall of the top of the mounting seat, so that friction between the gasket and the inner wall of the top of the mounting seat can be avoided, the mounting seat is protected from abrasion, and the service life of the mounting seat is prolonged. In addition, the arrangement mode can also avoid the interference between the gasket and the anti-loosening mechanism, and ensure the action stability of the anti-loosening mechanism.

Furthermore, the gasket is sleeved on the optical axis section, the outer diameter of the optical axis section is smaller than the outer diameter of the thread section, and the inner diameter of the gasket is smaller than the outer diameter of the thread section, so that the gasket can be always kept on the optical axis section, the risk of missing installation, wrong installation or falling of the anti-loosening piece is eliminated, and the connecting piece and the gasket can be used as an assembly and a quick-wear piece for preparing a bin.

Furthermore, when the anti-loosening element is a gasket, the roughness of the upper surface of the gasket is larger than that of the lower surface of the gasket, so that relative rotation does not exist between the upper surface of the gasket and the inner wall of the top of the mounting seat in the locking and unlocking process, relative rotation can be generated between the connecting piece and the lower surface of the gasket, the wear surface is transferred between the gasket and the connecting piece, the wear of the mounting seat is reduced, when the wear of the lower surface of the gasket exceeds an acceptable range, the gasket can be replaced by a detachable countersunk head screw, and the maintenance convenience is improved.

Furthermore, the locking piece selects the setting mode of first gasket and second gasket for use for when the connecting piece produces not hard up trend, relative rotation and production lifting tension between the wedge-shaped surface of first gasket and second gasket prevent not hard up of connecting piece, thereby improve locking effect.

Furthermore, the gradient of the first wedge-shaped surface and the gradient of the second wedge-shaped surface are larger than the thread lead angle of the thread section, so that when the thread section tends to loosen, the lifting amount in the axial direction between the two gaskets is larger than the climbing amount of the thread section in the axial direction, a stroke difference is formed between the two gaskets, the stroke difference is fed back to the inside of the connecting piece, namely, the axial pretightening force of the connecting piece is increased, and through the wedge effect, the loosening tendency of the connecting piece is reduced, so that the loosening phenomenon cannot occur.

Further, the inner diameter of the ring of the first gasket and the second gasket is smaller than the outer diameter of the thread section, and the outer diameter of the optical axis section is smaller than the outer diameter of the thread section, so that the first gasket and the second gasket can be always kept on the optical axis section, the assembly and disassembly are convenient, the risk of missing, wrong or falling of the locking piece can be eliminated, and the connecting piece and the locking piece can be used as an assembly and a spare bin for easily damaged pieces.

Furthermore, the thread section is made of coarse threads, so that the connection durability is higher compared with that of fine threads, and the service life of the connecting piece can be prolonged.

Further, the surface hardness of the anti-loosening element is set to be larger than that of the connecting element, so that the contact surface state of the connecting element and the gasket is more stable, and the abrasion is normal.

Furthermore, the first joint structure is arranged on the top surface of the limiting part, and the second joint structure is arranged on the lower surface of the flange, so that when the socket joint part falls on the limiting part, the first joint structure and the second joint structure can be automatically jointed, and the anti-loosening effect is ensured.

Furthermore, the inner bevel gear is adopted by the first joint structure, the outer bevel gear is adopted by the second joint structure, the limiting part can be smoothly jointed with the sleeve joint part, and the situations of joint failure and the like are avoided.

Further, the outer diameter of the flange is approximately equal to the inner diameter of the mounting seat, so that the moving stability of the socket joint piece can be guaranteed, and the anti-loosening mechanism caused by the axial deflection of the socket joint piece is prevented from being out of work.

Furthermore, by arranging the elastic piece, the socket piece can be always kept jointed with the limiting piece when not subjected to external force, and the anti-loosening effect of the anti-loosening mechanism is ensured.

Further, the upper portion through setting up the connecting piece stretches out through the mounting hole all the time, can utilize the mounting hole to lead the connecting piece under the prerequisite that does not influence the battery package circulation, improves the connection precision to do benefit to the interlock as early as possible that realizes connecting piece and target fastener.

The battery pack of this application has the lock body subassembly of anti-loosening piece through setting up on the shell, can guarantee the connection reliability of battery pack, improves the maintenance convenience of battery pack.

The locking mechanism of this application through set up the anti-loosening piece in the lock body subassembly, can improve locking mechanism's locking reliability and use durability, prolongs locking mechanism's life, reduces locking mechanism's the maintenance degree of difficulty.

Furthermore, the locking assembly is arranged in a manner that the floating plate floats relative to the fixed plate, so that the locking difficulty of the locking mechanism can be reduced, the locking assembly is more convenient to replace, and the maintenance cost is lower.

The vehicle of this application, battery package through the vehicle adopts above-mentioned locking mechanism and the automobile body coupling that has anti-loosening piece, can improve the reliability of being connected between battery package and the vehicle, reduces the safe risk of vehicle for the maintenance of vehicle is more convenient.

Scheme 1. a lock body subassembly, its characterized in that, the lock body subassembly includes:

the connecting piece is provided with an adjusting part and a fastening part which are connected with each other, the adjusting part is movably arranged in the accommodating cavity along the axial direction of the adjusting part and can be driven by the socket piece to ascend, a fourth joint structure is arranged on the adjusting part, the adjusting part allows the socket piece to be sleeved on the adjusting part, when the socket piece is sleeved on the adjusting part, the third joint structure is jointed with the fourth joint structure, so that the circumferential relative rotation of the connecting piece relative to the socket piece is limited, and the upper part of the fastening part can pass through the mounting hole and is rotatably fastened to a target fastener;

The lock body assembly of claim 1, wherein the anti-release member is a washer fixedly attached to the top inner wall of the mounting seat.

Scheme 3. according to scheme 2 the lock body subassembly, characterized in that, be provided with the counter sink on the gasket, the top inner wall of mount pad is seted up threaded hole, and the spiro union is in after counter sink passes the counter sink in the threaded hole, realizes the gasket fixed connection in the top inner wall of mount pad.

The lock body assembly of the claim 2, characterized in that the upper part of the fastening part is a threaded section which can pass through the mounting hole and is screwed to the target fastener.

The lock body assembly according to claim 1, wherein the anti-loosening member is a washer, the washer is sleeved on a lower portion of the fastening portion, and the roughness of an upper surface of the washer is greater than that of a lower surface of the washer.

The lock body assembly of claim 5, wherein a coefficient of friction between the upper surface of the washer and the top inner wall of the mount pad is 2.0-2.5 times a coefficient of friction between the lower surface of the washer and the adjustment portion.

The lock body assembly of claim 7, wherein the fastening portion has a threaded portion at an upper portion thereof, the threaded portion being capable of passing through the mounting hole and being threadedly engaged with the target fastener.

Scheme 8. the lock body subassembly of scheme 7, characterized in that, the lower part of fastening portion is the optical axis section, the upper end of optical axis section with the screw thread section is connected, the lower extreme with the regulation part is connected, the packing ring cover is located the optical axis section.

The lock body assembly of claim 8, wherein the outer diameter of the optical axis segment is smaller than the outer diameter of the thread of the threaded segment, and the inner diameter of the washer is smaller than the outer diameter of the thread of the threaded segment.

The lock body assembly of claim 1, wherein the anti-release member comprises:

A lock body assembly according to claim 10, wherein a coefficient of friction between the first radial ridges and the top interior wall of the receptacle is 2.0 to 2.5 times a coefficient of friction between the first wedge face and the second wedge face; and/or

The lock body assembly of claim 10, wherein the upper portion of the fastening portion is a threaded segment that is capable of passing through the mounting hole and being threaded to the target fastener.

A lock body assembly according to claim 12, wherein the first and second wedge surfaces each have a slope greater than a lead angle of the threaded section.

Scheme 14. the lock body assembly according to scheme 12, characterized in that the lower part of the fastening portion is an optical axis section, the upper end of the optical axis section is connected with the threaded section, the lower end is connected with the adjusting portion, and the optical axis section is sleeved with the first gasket and the second gasket.

The lock body assembly of claim 14, wherein the outer diameter of the optical axis segment is smaller than the outer diameter of the thread of the threaded segment, and the annular inner diameters of the first and second washers are smaller than the outer diameter of the thread of the threaded segment.

Scheme 16. a lock body assembly according to scheme 4, 7 or 12, wherein the threaded section is a coarse thread.

A lock body assembly according to claim 1, wherein the anti-release member has a surface hardness greater than a surface hardness of the coupling member.

The lock body assembly of the claim 17, wherein the surface hardness of the anti-loosening element is 460-510 HV.

Scheme 19. the lock body assembly according to scheme 1, wherein the first engaging structure is disposed on a top surface of the limiting member, a flange is formed by extending an outer edge of a top portion of the sleeve member, and the second engaging structure is disposed on a lower surface of the flange.

The lock body assembly of claim 19, wherein the first engagement structure is an internal bevel and the second engagement structure is an external bevel.

Scheme 21. the lock body subassembly of scheme 19, characterized in that, the external diameter of turn-ups is roughly equal with the internal diameter of mount pad.

The lock body assembly of claim 1, wherein the adjustment portion includes a flange section and a mating section, an upper surface of the flange section is coupled to the fastening portion, a lower surface of the flange section is coupled to the mating section, and the fourth engagement structure is disposed on the mating section.

A lock body assembly according to claim 22, wherein the third engagement formation is a splined slot and the fourth engagement formation is a spline.

Scheme 24. the lock body assembly according to scheme 1, wherein the anti-loosening mechanism further comprises an elastic member, two ends of the elastic member respectively abut against the top surface of the socket member and the inner wall of the top of the mounting seat, and the elastic member is configured to have elastic potential energy capable of enabling the socket member to move towards the limiting member all the time.

The lock body assembly of claim 1, wherein the adjustment portion is configured to abut against the socket by gravity in a state where the fastening portion is unfastened from the target fastener, and an upper portion of the connecting member protrudes through the mounting hole.

Scheme 26. a battery package, characterized in that, the battery package includes the shell, be provided with the lock body subassembly of any of schemes 1-25 on the shell.

The lock mechanism of claim 27, wherein the lock mechanism comprises a locking assembly and the lock body assembly of any one of claims 1-25, and the lock body assembly is cooperatively connected with the locking assembly.

The latch mechanism of claim 27, wherein said latch assembly comprises a stationary plate fixedly attachable to the vehicle, a floating plate floatably disposed on said stationary plate, and a latch member fixedly disposed on said floating plate.

A vehicle according to claim 29, characterized in that the vehicle comprises a vehicle body, a battery pack, and the lock mechanism according to claim 27 or 28, wherein the battery pack is connected to the vehicle body through the lock mechanism.

Drawings

The lock body assembly, the battery pack, the lock mechanism and the vehicle of the present application are described below with reference to the accompanying drawings. In the drawings:

FIG. 1 is an exploded view of the locking mechanism of the present application;

figure 2 is an assembly view of the connecting member and anti-release member of the lock body assembly of the present application;

figure 3 is a cross-sectional view of the mounting base and anti-release member of the lock body assembly of the present application;

FIG. 4 is a cross-sectional view of the locking mechanism of the present application in a locked state;

FIG. 5 is a cross-sectional view of the locking mechanism of the present application in a locked state;

FIG. 6 is a graph illustrating variation in pre-tightening force of the connector according to the present application;

FIG. 7 is an assembly view of an alternate embodiment of the present application of a connector and a check member;

FIG. 8 is a partial cross-sectional view of another alternative embodiment of the present application showing the connector in a locked condition;

fig. 9 is an exploded view of another alternative embodiment of the check member of the present application.

List of reference numerals

10. A lock body assembly; 11. a mounting seat; 111. mounting holes; 12. a locking mechanism; 121. a limiting member; 1211. a first via hole; 1212. a first bonding structure; 1213. a butt joint groove; 122. a socket; 1221. a second via hole; 1222. a second bonding structure; 1223. a third engagement structure; 123. an elastic member; 13. a connecting member; 131. an adjustment section; 1311. a flange section; 1312. a butt joint section; 1313. a fourth bonding structure; 132. a fastening section; 1321. a threaded segment; 1322. a light axis segment; 14. an anti-loosening element; 141. a first gasket; 1411. a first radial rib; 1412. a first wedge-shaped face; 142. a second gasket; 1421. a second radial rib; 1422. a second wedge-shaped face; 15. countersunk head screws;

20. a locking assembly; 21. a fixing plate; 22. a floating plate; 23. a locking member;

30. a cross beam;

40. and (4) adding and removing a lock head.

Detailed Description

Preferred embodiments of the present application are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principles of the present application, and are not intended to limit the scope of protection of the present application. For example, although the following embodiments of the present application are described in connection with an electric vehicle, this is not intended to limit the scope of the present application, and the lock body assembly, battery pack, and locking mechanism of the present application may be applied to other vehicles without departing from the principles of the present application.

It should be noted that in the description of the present application, the terms "in", "up", "down", "vertical", "inside", "outside", and the like indicate directions or positional relationships based on those shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those skilled in the art as the case may be.

Referring first to figures 1 and 2, the lock body assembly of the present application will be described.

As shown in fig. 1 and fig. 2, in order to solve the problems of poor durability and reliability and great difficulty in replacement and maintenance of the conventional locking mechanism, the lock body assembly 10 of the present application includes a mounting seat 11, a locking mechanism 12, a connecting member 13 and a locking member 14. The mounting seat 11 is a cylindrical structure, and has a mounting hole 111 at the top and an opening at the bottom. The anti-loosening mechanism 12 includes a limiting member 121 and a sleeve member 122, the limiting member 121 is detachably connected to the bottom of the mounting base 11 and encloses with the mounting base 11 to form an accommodating cavity, a first through hole 1211 is disposed in the middle of the limiting member 121, the first through hole 1211 allows the unlocking head 40 to pass through, and a first engaging structure 1212 is further disposed on the limiting member 121. The socket 122 is movably disposed in the accommodating cavity along an axial direction (a vertical direction in fig. 1) of the socket 122 and a bottom of the socket 122 can be abutted with the unlocking head 40, and a second engagement structure 1222 is disposed outside the socket 122, and the second engagement structure 1222 can be engaged with the first engagement structure 1212, so as to limit circumferential relative rotation of the socket 122 with respect to the stopper 121. A second through hole 1221 is disposed in the middle of the socket 122, and a third bonding structure 1223 is disposed inside the second through hole 1221 (see fig. 5). The connecting member 13 has an adjusting portion 131 and a fastening portion 132 connected to each other, the adjusting portion 131 is movably disposed in the accommodating cavity along an axial direction (also vertical direction in fig. 1) of the adjusting portion 131 and can be lifted by the socket 122, a fourth engaging structure 1313 is disposed on the adjusting portion 131, the adjusting portion 131 allows the socket 122 to be sleeved thereon, and when the socket 122 is sleeved on the adjusting portion 131, the third engaging structure 1223 is engaged with the fourth engaging structure 1313, so as to limit circumferential relative rotation of the connecting member 13 with respect to the socket 122. The upper portion of the fastening portion 132 can pass through the mounting hole 111 and be rotatably fastened to the target fastener. The anti-loose member 14 is disposed between the adjusting portion 131 and the top inner wall of the mounting seat 11, and the anti-loose member 14 is disposed to be pressed between the adjusting portion 131 and the top inner wall of the mounting seat 11 and to have no relative rotation with the top inner wall of the mounting seat 11 when the fastening portion 132 is rotationally fastened with the target fastener.

For example, when the lock body assembly 10 is applied to a vehicle, the lock body assembly 10 is fixed on a battery pack, the target fastener may be a vehicle chassis, and a locking hole is formed on the chassis, or the target fastener may be a locking piece or a locking assembly disposed on the vehicle chassis. When the battery pack is installed, the battery pack is lifted to the installation position of the vehicle chassis, then the locking and unlocking device is driven to operate, the locking and unlocking head 40 of the locking and unlocking device ascends and is in butt joint with the bottom of the sleeve-joint piece 122 of the anti-loosening mechanism 12, and therefore the sleeve-joint piece 122 is driven to ascend after being separated from the limiting piece 121. In the ascending process, the unlocking head 40 passes through the first through hole 1211 of the limiting part 121 to enter the accommodating cavity, the connecting part 13 is driven by the sleeve part 122 to ascend along the accommodating cavity until the upper part of the fastening part 132 is butted with the target fastener, the unlocking head 40 applies locking torque to the sleeve part 122 and continues to ascend, and the sleeve part 122 can drive the connecting part 13 to be fastened on the target fastener in a rotating manner under the joint of the third joint structure 1223 and the fourth joint structure 1313. After the assembly is completed, the locking and unlocking head 40 is withdrawn from the first through hole 1211, the socket 122 is lowered onto the limiting member 121 along the axial direction thereof, the first engaging structure 1212 and the second engaging structure 1222 are re-engaged, and the locking member 14 is squeezed between the adjusting portion 131 and the top inner wall of the mounting seat 11. When the connecting member 13 is subjected to a shock or the like and a loosening tendency occurs, the engagement between the socket 122 and the limiting member 121 in the loosening prevention mechanism 12 can prevent the loosening tendency, and the loosening prevention member 14 can also prevent the loosening tendency, so that the connecting member 13 is always stably connected.

When the battery pack needs to be disassembled, the locking and unlocking head 40 of the locking and unlocking device is firstly butted with the sleeve joint part 122 of the anti-loosening mechanism 12, the sleeve joint part 122 is lifted up to separate the sleeve joint part 122 from the limiting part 121, then the locking and unlocking head 40 applies torque opposite to the locking and stably descends, and the connecting part 13 rotates to withdraw from the target fastener under the driving of the sleeve joint part 122. In the withdrawing process, because the top inner wall of the mounting seat 11 and the anti-loosening piece 14 do not rotate relatively, no abrasion is generated between the top inner wall and the anti-loosening piece.

When the abrasion between the connecting member 13 and the loosening prevention member 14 reaches a certain degree, the connecting member 13 and the loosening prevention member 14 can be smoothly taken out and replaced by detaching the limiting member 121 of the loosening prevention mechanism 12.

It can be seen that, by providing the anti-loose member 14 between the adjusting portion 131 and the top inner wall of the mounting seat 11, the durability and the connection reliability of the lock body assembly 10 can be improved, the service life can be prolonged, and the maintenance difficulty can be reduced. Specifically, in the locking process of the existing locking mechanism, the top inner wall of the mounting seat 11 directly rubs with the connecting member 13 as a pressure-bearing surface, which may result in the increase of the wear degree of the top inner walls of the connecting member 13 and the mounting seat 11 over time, and also makes the worn mounting seat 11 inconvenient to replace due to the arrangement mode that the mounting seat 11 of the lock body assembly 10 is usually directly and fixedly connected to the battery pack. And this application can shift the wearing surface between anti-loose piece 14 and connecting piece 13 by between connecting piece 13 and the top inner wall of mount pad 11 through setting up anti-loose piece 14 between the top inner wall at regulating part 131 and mount pad 11 to the degree of wear of the top inner wall of mount pad 11 that significantly reduces plays the effect of protection mount pad 11. Moreover, the connecting member 13 and the anti-loose member 14 are more easily replaced than the mounting seat 11, and the maintenance difficulty and the maintenance cost of the lock body assembly 10 can be reduced.

In addition, the arrangement of the anti-loosening piece 14 also enables the attenuation of the pretightening force of the connecting piece 13 after multiple locking and unlocking to be kept within a certain range, and the pretightening force of the connecting piece 13 changes less along with the increase of the use times under the set locking torque, so that the connection is more reliable. In addition, the anti-loosening element 14 can form a double anti-loosening function together with the anti-loosening mechanism 12, and the connection reliability of the lock body assembly 10 is ensured.

Referring now to figures 1 through 6, a preferred embodiment of the lock body assembly of the present application will be described.

Referring to fig. 1 and 4, in a preferred embodiment, the lock body assembly 10 includes a mount 11, a lockdown mechanism 12, a connecting member 13, and a lockdown member 14. The mounting seat 11 is of a cylindrical structure, the bottom of the mounting seat is open, and internal threads are formed inside the open. The top of the mounting base 11 has a certain thickness, and a mounting hole 111 is formed in the middle of the top.

Referring to fig. 1, the anti-loosening mechanism 12 includes a limiting member 121, a sleeve member 122, and an elastic member 123. The limiting member 121 is an annular gear, a first through hole 1211 is formed in the middle of the limiting member, a plurality of butt joint grooves 1213 are formed in the bottom surface of the limiting member along the circumferential direction, the through hole allows the unlocking head 40 to pass through, and the butt joint grooves 1213 can be matched with a special assembling and disassembling tool. And external threads are arranged on the peripheral side of the inner gear ring and are matched with the internal threads arranged at the bottom of the mounting seat 11. The top surface of the annulus gear is provided with a ring of first engagement structures 1212 in the circumferential direction, the first engagement structures 1212 in this application being inner conical teeth that are arranged obliquely towards the inside of the annulus gear. During installation, the inner gear ring is in butt joint with the butt joint groove 1213 through a special dismounting tool and is applied with a rotating torque, so that the inner gear ring is in threaded connection with the bottom of the installation seat 11, a preset tightening torque is continuously applied after the inner gear ring is in threaded connection in place, and the installation stability of the inner gear ring is ensured. When it is desired to remove the annulus gear, the removal tool abuts the abutment slot 1213 and applies a reverse torque, and the annulus gear is thus withdrawn from the bottom of the mount 11.

Referring to fig. 1 and 5, the socket 122 is an external gear ring, a second through hole 1221 is formed in the middle of the socket, a flange is formed by extending the top outer edge outwards, the outer diameter of the flange is substantially equal to the inner diameter of the mounting seat 11, and the second engaging structure 1222 is disposed on the lower surface of the flange. In the present application, the second engagement structure 1222 is an outer bevel, which is obliquely arranged towards the outside of the outer ring gear. The inside of second via hole 1221 is provided with third joint structure 1223, and third joint structure 1223 is the spline groove in this application, and this spline groove is logical groove. The bottom of outer ring gear still is formed with can with add the butt joint structure of locking the butt joint of locking head 40, in this application, this butt joint structure is for forming in the outer dodecagonal plum blossom structure in outer ring gear bottom outside, and this outer dodecagonal plum blossom structure can with plum blossom sleeve looks adaptation. The outer diameter of the flange and the inner diameter of the mounting seat 11 may be substantially equal to each other, that is, the outer diameter of the flange and the inner diameter of the mounting seat 11 are equal in size during design, but the deviation in the setting of the outer diameter of the flange is a negative value, and/or the deviation in the setting of the inner diameter of the mounting seat 11 is a positive value. Or they may be substantially equal, or the outside diameter of the flange may be slightly smaller (e.g., 1-3mm difference) than the inside diameter of the mounting seat 11, so that there is a slight gap between them.

The elastic member 123 is a compression spring in the present application, two ends of the elastic member 123 respectively abut against the top flange of the socket 122 and the top inner wall of the mounting seat 11, and the elastic member 123 is configured to have elastic potential energy capable of moving the socket 122 toward the limiting member 121 all the time. In other words, the compression spring is in a compressed state in any state.

Under the state of no external force, the compression spring is pressed against the upper surface of the flanging of the outer gear ring, the bottom of the outer gear ring extends out of the first through hole 1211, and the outer conical teeth on the outer gear ring are meshed with the inner conical teeth on the top of the inner gear ring, so that the outer gear ring and the inner gear ring do not rotate relatively. When the quincuncial sleeve on the locking and unlocking head 40 is butted with the outer dodecagonal quincuncial structure at the bottom of the outer gear ring and overcomes the elasticity of the compression spring to lift the outer gear ring, the outer conical teeth are separated from the inner conical teeth, and at the moment, the rotation torque is applied to the locking and unlocking head 40, so that the outer gear ring can rotate.

Referring to fig. 2, the connecting member 13 is a high-strength bolt integrally molded and formed with an adjusting portion 131 and a fastening portion 132 connected to each other. Specifically, the fastening portion 132 is integrally a threaded section 1321, the adjusting portion 131 includes a flange section 1311 and a butt section 1312, a top end of the threaded section 1321 is provided with a chamfer, a bottom end of the threaded section is connected with an upper surface of the flange section 1311, and a lower surface of the flange section 1311 is connected with the butt section 1312. The threaded section 1321 is a coarse thread, and the upper portion of the threaded section 1321 can pass through the mounting hole 111 and be screwed to the target fastener. The outer diameter of the flange section 1311 is smaller than the inner diameter of the mounting seat 11, more specifically, smaller than the inner diameter of the compression spring. An outer diameter of the butt section 1312 is smaller than an outer diameter of the flange section 1311, and an outer circumferential side of the butt section 1312 is provided with a fourth butt structure. In this application, the fourth engagement structure 1313 is a spline that fits a spline groove provided on the socket 122.

Referring to fig. 4, in a state that the connecting member 13 is not rotationally fastened with the target fastener, the socket member 122 is sleeved on the abutting section 1312, the spline is engaged with the spline groove, the connecting member 13 is in a freely slidable state under the dual guidance of the mounting hole 111 and the spline groove, wherein the flange section 1311 abuts against the upper surface of the outer gear ring under the action of gravity, the threaded section 1321 extends through the mounting hole 111 at this time, and the upper end of the threaded section 1321 is higher than the mounting hole 111. Referring to fig. 5, when the external gear ring is disengaged from the internal gear ring, the external gear ring lifts up the connecting member 13 and may rotate the connecting member 13, and thus the connecting member 13 may be rotatably fastened to the target fastener. No matter what state the connecting member 13 is, the butt section 1312 is always inserted into the second through hole 1221 of the socket member 122, i.e. the spline and the spline groove are always engaged with each other.

Referring to fig. 1 and 3, the anti-release member 14 is a washer fixedly attached to the top inner wall of the mounting seat 11. Specifically, a plurality of countersunk holes (not shown in the figure) are formed in the gasket, a plurality of threaded holes (not shown in the figure) are correspondingly formed in the inner wall of the top of the mounting seat 11, and the countersunk screws 15 are screwed in the threaded holes after penetrating through the countersunk holes, so that the gasket is fixedly connected to the inner wall of the top of the mounting seat 11. After the screw connection, the outer surface of the countersunk head screw 15 is located inside the countersunk hole and is not exposed. When the structure is arranged, the gasket is fixedly connected with the inner wall of the top of the mounting seat 11 through the countersunk head screws 15, so that relative rotation does not exist between the gasket and the inner wall, and friction only occurs between the upper surface of the flange section 1311 and the lower surface of the gasket. Preferably, the surface hardness of the anti-release member 14 is greater than that of the coupling member 13.

In a specific embodiment, the surface hardness of the anti-loosening element 14 is 460 to 510HV, which is greater than the surface hardness of a common performance-grade high-strength bolt. The surface hardness of the 8.8-grade high-strength bolt is 250-320 HV, the surface hardness of the 10.9-grade high-strength bolt is 320-380 HV, and the surface hardness of the 12.9-grade high-strength bolt is 380-430 HV.

In the preferred embodiment, the inner gear ring is connected with the mounting seat 11 by threads, and the bottom surface of the inner gear ring is provided with the butt groove 1213, so that the inner gear ring can be conveniently mounted and dismounted, and the maintenance convenience of the lock body assembly 10 is further improved.

The first engaging structure 1212 is disposed on the top surface of the limiting member 121, and the second engaging structure 1222 is disposed on the lower surface of the flange, so that when the socket 122 falls on the limiting member 121, the first engaging structure 1212 and the second engaging mechanism can automatically engage with each other, thereby ensuring the anti-loosening effect. The inner bevel gear is adopted by the first engaging structure 1212, and the outer bevel gear is adopted by the second engaging structure 1222, so that the smooth engagement between the limiting member 121 and the socket member 122 can be ensured, and the situations of engagement failure and the like can be avoided. The outer diameter of the flange is approximately equal to the inner diameter of the mounting seat 11, so that the moving stability of the socket joint 122 can be ensured, and the anti-loosening mechanism 12 caused by the axial deflection of the socket joint 122 is prevented from being out of work. By providing the elastic member 123, the sleeve 122 can be always engaged with the limiting member 121 when no external force is applied, so as to ensure the anti-loosening effect of the anti-loosening mechanism 12.

The threaded section 1321 is formed by a coarse thread, which has a higher connection durability than a fine thread, and can improve the service life of the connection member 13. By setting the outer diameter of flange section 1311 to be larger than the outer diameter of abutting section 1312 so that there is a larger contact area between connecting member 13 and anti-loosening element 14, the anti-loosening effect can be improved. The upper portion of the connecting piece 13 is always extended out through the mounting hole 111, the connecting piece 13 can be guided by the mounting hole 111, connection precision is improved, and early engagement of the connecting piece 13 and a target fastener is facilitated.

Through with packing ring fixed connection on the top inner wall of mount pad 11, can avoid producing the friction between the top inner wall of packing ring and mount pad 11, protect mount pad 11 to avoid wearing and tearing, improve the life of mount pad 11. In addition, this arrangement can avoid interference between the washer and the lock mechanism 12, and ensure the operational stability of the lock mechanism 12. In addition, the gasket can form an annular groove for positioning one end of the compression spring after being fixed, and the installation stability of the compression spring is improved. By setting the surface hardness of the anti-loosening element 14 to be greater than that of the connecting element 13, the contact surface state of the connecting element 13 and the gasket is more stable, and the abrasion is normal.

Referring to fig. 6, through repeated tests, observations, analyses and comparisons of the inventor, on the premise of the above arrangement mode, compared with the technical scheme without the anti-loosening element 14, the contact surface between the anti-loosening element 14 and the connecting element 13 is stable in state and normal in abrasion, and the attenuation of the pretightening force after repeated locking and unlocking for many times can be controlled within 25% within the design service life cycle (more than 3000 times of repeated locking and unlocking) of the lock body assembly 10, so that the design and use requirements are completely met, and the reliable connection between the battery pack and the vehicle body is ensured.

It should be noted that the above preferred embodiments are only used for illustrating the principle of the present application, and are not intended to limit the protection scope of the present application. Without departing from the principles of the present application, those skilled in the art may adjust the setting manner described above, so that the present application may be applicable to more specific application scenarios.

For example, in an alternative embodiment, although the above-mentioned embodiment is described in which the anti-loose element 14 is fixedly connected to the top inner wall of the mounting seat 11 by a washer, this is merely a preferred embodiment, and the person skilled in the art can adjust the anti-loose element 14 as long as the adjusted anti-loose element 14 can satisfy the condition that the anti-loose element is arranged between the adjusting portion 131 and the top inner wall of the mounting seat 11 and does not rotate relative to the top inner wall of the mounting seat 11 when being pressed.

For example, referring to fig. 7, in an alternative embodiment, the fastening portion 132 of the connecting member 13 is provided with a threaded section 1321 at the upper part and an optical axis section 1322 at the lower part, and the outer diameter of the optical axis section 1322 is smaller than the threaded outer diameter of the threaded section 1321. The anti-loose piece 14 is still a gasket, the gasket is sleeved on the optical axis segment 1322, the inner diameter of the gasket is smaller than the outer diameter of the thread segment 1321, and the roughness of the upper surface of the gasket is larger than that of the lower surface of the gasket. When the bolt is manufactured, the gasket can be sleeved on the optical axis bolt, then the thread rolling process is performed on the upper portion of the optical axis bolt, so that the outer diameter of the thread formed after thread rolling (namely the outer diameter of the thread section 1321) is larger than the annular inner diameter of the gasket, the gasket cannot fall off from the bolt, and the gasket and the bolt form an assembly. Preferably, the coefficient of friction between the upper surface of the gasket and the top inner wall of the mounting seat 11 is 2.0-2.5 times the coefficient of friction between the lower surface of the gasket and the flange section 1311. After the gasket is extruded, because the roughness of the upper surface of the gasket is larger than that of the lower surface of the gasket, the top inner wall of the mounting seat 11 and the upper surface of the gasket do not rotate relatively, the upper surface of the flange section 1311 of the connecting piece 13 and the lower surface of the gasket can rotate relatively, the relative rotation enables the wear surface to be transferred between the upper surface of the flange section 1311 and the lower surface of the gasket, the wear of the top inner wall of the mounting seat 11 is reduced, and when the wear of the contact surface exceeds the limit, the assembly of the connecting piece 13 and the gasket can be replaced, so that the maintenance convenience is improved.

Referring to fig. 8 and 9, in another alternative embodiment, the fastening portion 132 of the connecting member 13 has a threaded section 1321 at the upper portion and an optical axis section 1322 at the lower portion, and the optical axis section 1322 has an outer diameter smaller than the threaded outer diameter of the threaded section 1321. The anti-release member 14 includes a first pad 141 and a second pad 142 which are engaged with each other in pairs for use. The first spacer 141 is annular and is sleeved on the optic axis segment 1322, the first radial convex ridge 1411 is formed on the upper surface of the first spacer 141, and the first wedge surface 1412 is formed on the lower surface of the first spacer along the circumferential direction. The second spacer 142 is annular and also sleeved on the optical axis 1322 and located below the first spacer 141, a second radial ridge 1421 is formed on a lower surface of the second spacer 142, and a second wedge surface 1422 matched with the first wedge surface 1412 is formed on an upper surface of the second spacer 142 along the circumferential direction. Preferably, the coefficient of friction between the first radial ridge 1411 and the top inner wall of the mounting seat 11 is greater than the coefficient of friction between the first wedge surface 1412 and the second wedge surface 1422, the coefficient of friction between the second radial ridge 1421 and the flange segment 1311 is greater than the coefficient of friction between the first wedge surface 1412 and the second wedge surface 1422, the slopes of the first wedge surface 1412 and the second wedge surface 1422 (α in fig. 8) are both greater than the lead angle of the thread segment 1321 (β in fig. 8), and the annular inner diameters of the first washer 141 and the second washer 142 are both less than the thread outer diameter of the thread segment 1321. The coefficient of friction between the first radial ridges 1411 and the top inner wall of the mounting seat 11 is 2.0 to 2.5 times the coefficient of friction between the first and

second wedge surfaces

1412 and 1422, and the coefficient of friction between the second radial ridges 1421 and the flange section 1311 is 2.0 to 2.5 times the coefficient of friction between the first and

second wedge surfaces

1412 and 1422. More specifically, the coefficient of friction between the first wedge-shaped surface 1412 and the second wedge-shaped surface 1422 is selected to be any value between 0.10 and 0.17, the coefficient of friction between the first radial ridge 1411 and the top inner wall of the mounting seat 11, and the coefficient of friction between the second radial ridge 1421 and the flange section 1311 are selected to be any value between 0.20 and 0.35, and those skilled in the art can selectively select the material and surface coating of the two spacers to satisfy the specific relationship between the above coefficients of friction.

After the connector 13 is rotatably fastened to the target fastener, the first radial ridges 1411 and the top inner wall of the mounting seat 11 are pressed against each other, the second radial ridges 1421 and the flange section 1311 of the connector 13 are pressed against each other, and the first and

second wedge surfaces

1412 and 1422 are pressed into engagement with each other. Since the coefficient of friction between first radial ridge 1411 and the top interior wall of mounting block 11 and the coefficient of friction between second radial ridge 1421 and flange segment 1311 are both greater than the coefficient of friction between first wedge surface 1412 and second wedge surface 1422, there is no relative sliding between the upper surface of first shim 141 and the top interior wall of mounting block 11, and there is no relative sliding between the lower surface of second shim 142 and the upper surface of flange segment 1311, with relative sliding occurring only between first wedge surface 1412 and second wedge surface 1422.

When the connecting member 13 tends to loosen, because the slopes of the first wedge-shaped surface 1412 and the second wedge-shaped surface 1422 are both greater than the thread lift angle of the thread segment 1321 (i.e., α > β), the lift amount between the two washers in the axial direction is greater than the lift amount of the thread segment 1321 in the axial direction, a stroke difference is formed between the two washers, the axial pre-tightening force of the connecting member 13 is increased when the two washers are fed back into the connecting member 13, and the loosening tendency of the connecting member 13 is reduced by the wedge effect, so that the loosening does not occur.

The anti-loose piece 14 is provided with the first gasket 141 and the second gasket 142, so that when the connecting piece 13 tends to loose, the wedge-shaped surfaces of the first gasket 141 and the second gasket 142 rotate relatively to generate lifting tension to prevent the connecting piece 13 from loosening, thereby improving the anti-loose effect. Specifically, the friction coefficient between the first radial ridge 1411 and the top inner wall of the mounting seat 11 and the friction coefficient between the second radial ridge 1421 and the flange 1311 are both greater than the friction coefficient between the first wedge-shaped surface 1412 and the second wedge-shaped surface 1422, so that wear only occurs between the first wedge-shaped surface 1412 and the second wedge-shaped surface 1422, the loss of the top inner wall of the mounting seat 11 is greatly reduced, the mounting seat 11 can be protected, and the replacement of the anti-loosening member 14 is more convenient. The slope of the first wedge-shaped surface 1412 and the slope of the second wedge-shaped surface 1422 are greater than the thread lead angle of the thread section 1321, so that when the thread section 1321 tends to loosen, the axial lift between the two washers is greater than the axial lift of the thread section 1321, a stroke difference is formed between the two washers, the axial pretightening force of the connecting piece 13 is increased when the axial lift is fed back into the connecting piece 13, and the loosening tendency of the connecting piece 13 is reduced through the wedge effect, so that the loosening cannot occur. The annular inner diameter of the first gasket 141 and the second gasket 142 is smaller than the outer diameter of the thread section 1321, and the outer diameter of the optical axis section 1322 is smaller than the outer diameter of the thread section 1321, so that the first gasket 141 and the second gasket 142 can be always kept on the optical axis section 1322, the dismounting and the mounting are convenient, the risk that the anti-loosening element 14 is neglected to be mounted, wrongly mounted or falls off can be eliminated, and the connecting element 13 and the anti-loosening element 14 can be used as an assembly and a spare bin for wearing parts.

For another example, in another alternative embodiment, although the locking mechanism 12 is described as a combination of the inner ring gear, the outer ring gear, and the elastic member 123 in the above embodiment, the arrangement is not exclusive, and the locking mechanism 12 may be replaced as long as the locking function is realized.

For example, in an alternative embodiment, a person skilled in the art can adjust the connection form of the ring gear and the mounting seat 11 to be a rotary snap, a snap connection, etc., and can also adjust the structure of the abutting groove 1213 at the bottom of the ring gear, for example, the structure can be omitted or adjusted to be another structure capable of abutting with an assembling and disassembling tool. For another example, a person skilled in the art can also adjust the abutting structure between the limiting member 121 and the sleeving member 122, for example, the inner conical teeth are adjusted to be grooves circumferentially arranged along the top surface of the inner gear ring at intervals, the outer conical teeth are correspondingly adjusted to be protrusions circumferentially arranged along the lower surface of the flange at intervals, and the protrusions and the grooves are connected in a matching manner, so that no relative rotation between the inner gear ring and the outer gear ring is realized. For another example, a person skilled in the art can also adjust the arrangement positions of the first engaging structure 1212 and the second engaging structure, for example, the first engaging structure 1212 is an axial through slot or spline slot provided on the hole wall of the first through hole 1211, and correspondingly, the second engaging structure 1222 is a protrusion or spline provided on the upper portion of the outer sidewall of the outer ring gear, and the protrusion/spline is movably engaged with the through slot/spline slot, when the protrusion/spline is located in the through slot/spline slot, the limiting member 121 and the sleeve member 122 do not rotate relative to each other, and when the protrusion/spline slides out of the through slot/spline slot, the sleeve member 122 can rotate relative to the limiting member 121. For another example, the elastic element 123 may be replaced by an elastic piece, an elastic rubber block, or other elastic components besides the compression spring. For another example, a person skilled in the art can also adjust the specific composition form of the anti-loose mechanism 12, such as omitting the elastic member 123, and only providing an inner gear ring and an outer gear ring, and engaging the two by gravity.

As another example, in another alternative embodiment, the specific arrangement form of the connecting member 13 is not exclusive, and those skilled in the art can adjust it as long as the adjusted connecting member 13 has the adjusting portion 131 and the fastening portion 132 and can achieve the condition of being fastened to the target fastener by rotation. For example, a person skilled in the art may adjust the specific arrangement of the adjustment portion 131 and the fastening portion 132, such as partially arranging the adjustment portion 131 as the threaded section 1321, or using a fine thread for the threaded section 1321, or omitting the flange section 1311 of the fastening portion 132, adjusting the diameter of the flange section 1311, and so on; alternatively, docking section 1312 may be non-circular in cross-section or may take the form of another key that is coupled to socket 122 (and correspondingly, socket 122 may need to be adapted). The fastening section can be set as a rotary buckle besides being set as a threaded section 1321, at the moment, the threaded section 1321 of the connecting piece 13 is replaced by a transversely-arranged hanging plate, the hanging plate is always positioned outside the mounting hole 111 of the mounting seat 11, correspondingly, the target fastening piece is provided with a long groove, two sides of the long groove are respectively provided with an arc-shaped bulge with a certain slope, the hanging plate rotates after penetrating through the long groove, and the hanging plate climbs along the arc-shaped bulge to realize the rotary fastening of the hanging plate and the arc-shaped bulge.

For another example, in another alternative embodiment, the installation seat 11 can be adjusted by those skilled in the art based on the cylindrical structure, and the adjustment includes, but is not limited to, the thickness, size, etc. of the installation hole 111.

For another example, in another embodiment, on the premise that the anti-loosing piece 14 adopts a combination of the first gasket 141 and the second gasket 142, a person skilled in the art can adjust the setting parameters of the two gaskets. For example, the slope of the first and

second wedge surfaces

1412, 1422, the number and shape of the radial ridges, the annular inner diameter of the first and

second spacers

141, 142, the surface hardness of the anti-loosening element 14, and the like may be adjusted by those skilled in the art.

Of course, the above alternative embodiments, and the alternative embodiments and the preferred embodiments can also be used in a cross-matching manner, so that a new embodiment is combined to be suitable for a more specific application scenario.

The present application further provides a battery pack, which includes a housing, and the housing is provided with the lock body assembly 10 of any of the above embodiments, wherein the mounting seat 11 of the lock body assembly 10 is fixedly connected to the housing.

The battery pack of this application through set up the lock body subassembly 10 that has anti-loosening 14 on the shell, can guarantee the connection reliability of battery pack, improves the maintenance convenience of battery pack.

Referring back to fig. 1 and 4, the present application further provides a locking mechanism, which includes a locking assembly 20 and the lock body assembly 10 according to any of the above embodiments, wherein the lock body assembly 10 is cooperatively connected with the locking assembly 20.

In one embodiment, the locking assembly 20 includes a stationary plate 21, a floating plate 22 and a locking member 23, the stationary plate 21 is fixedly attached to the vehicle, the floating plate 22 is floatably disposed on the stationary plate 21, and the locking member 23 is fixedly disposed on the floating plate 22. Specifically, the fixing plate 21 is disposed on the chassis beam 30 of the vehicle by screwing, welding or clamping, etc., through holes are opened on the chassis beam 30 and the fixing plate 21 for allowing the upper portion of the connecting piece 13 to pass through, two opposite sides of the fixing plate 21 are bent upwards to form a floating space with the bottom side, and the floating plate 22 is limited in the floating space and can float freely in the floating space. The floating plate 22 is integrally formed at the middle thereof with a nut as a locking member 23, and both side edges of the fixed plate 21 are surrounded with an opening for allowing the nut to protrude therethrough and to be floated within the range limited by the opening. The bottom of the floating plate 22 is provided with a chamfer corresponding to the nut, when the connecting piece 13 is driven by the brief introduction of the locking and unlocking device to rotate and rise, the cap recognition of the threaded section 1321 and the nut is realized under the guidance of the chamfer at the upper end of the threaded section 1321 and the chamfer at the bottom of the floating plate 22, and the connecting piece 13 is connected with the nut through threads after continuing to rotate and rise.

The locking mechanism of this application through set up locking part 14 in lock body subassembly 10, can improve locking mechanism's locking reliability and durability in utilization, prolongs locking mechanism's life, reduces locking mechanism's the maintenance degree of difficulty. By arranging the locking assembly 20 such that the floating plate 22 floats relative to the fixed plate 21, the locking difficulty of the locking mechanism can be reduced, and the locking assembly 20 can be replaced more conveniently and maintained at lower cost.

Of course, the specific arrangement of the locking assembly 20 is not limited thereto, and the arrangement can be adjusted by those skilled in the art to meet the requirement of being able to be coupled with the lock body assembly 10. For example, in an alternative embodiment, the locking assembly 20 may include only the fixing plate 21 and the locking member 23, the locking member 23 is fixedly disposed on the fixing plate 21, and the fixing plate 21 is fixedly disposed on the vehicle.

The application also provides an electric automobile, which comprises an automobile body, a battery pack and the locking mechanism in any embodiment, wherein the battery pack is connected with the chassis of the automobile body through the locking mechanism. Specifically, the mounting seat 11 of the lock body assembly 10 is fixedly connected to the battery pack, the locking assembly 20 is arranged on a chassis beam 30 of the vehicle, and the battery pack is fixed on the vehicle chassis through locking of the lock body assembly 10 and the locking assembly 20.

The vehicle of this application, battery package through the vehicle adopts above-mentioned locking mechanical system who has anti-loosening 14 and car connection, can improve the reliability of being connected between battery package and the vehicle, reduces the safe risk of vehicle for the maintenance of vehicle is more convenient.

The locking process and the unlocking process of the locking mechanism of the present application will be briefly described below with reference to fig. 4 and 5.

In the locking process of the locking mechanism, the locking and unlocking device operates to drive the locking and unlocking head 40 to ascend, the locking and unlocking head 40 is in butt joint with the outer dodecagonal quincuncial structure of the outer gear ring, after butt joint is completed, the locking and unlocking head 40 overcomes the elastic force of the compression spring to lift the outer gear ring and enable the outer gear ring and the outer gear ring to jointly pass through the first through hole 1211, at the moment, the inner conical tooth and the outer conical tooth are separated, and the outer gear ring pushes the flange section 1311 to realize ascending of the connecting piece 13. In the ascending process of the connecting piece 13, the guiding is realized through the flanging of the outer gear ring and the inner wall of the mounting seat 11, the spline groove of the outer gear ring and the spline of the connecting piece 13, the thread section 1321 and the mounting hole 111, and the lifting posture of the connecting piece 13 is kept stable. After the top chamfer of the threaded segment 1321 contacts the chamfer in the middle of the floating plate 22, the floating plate 22 floats to align the nut with the threaded segment 1321, thereby achieving the initial engagement of the threaded segment 1321 with the nut. Then, the locking and unlocking head 40 applies locking torque to the socket piece 122 while rising, the socket piece 122 drives the connecting piece 13 to rotate, threaded fastening of the threaded section 1321 and the nut is achieved, and after the threaded fastening is in place, the upper surface of the flange section 1311 is extruded with the gasket. After the locking head 40 is fastened in place, the sleeve member 122 descends to the limiting member 121 under the action of gravity, the outer conical teeth and the inner conical teeth are meshed with each other, and at the moment, the spline of the connecting member 13 is meshed with the spline groove of the sleeve member 122, so that the locking function of the connecting member 13 is realized.

In the unlocking process of the locking mechanism, the locking and unlocking device operates to drive the locking and unlocking head 40 to ascend, the locking and unlocking head 40 is in butt joint with the outer dodecagonal quincuncial structure of the sleeve-joint piece 122, and the locked and unlocking head 40 jacks the outer gear ring after butt joint so that the locked and unlocking head and the outer gear ring jointly pass through the first through hole 1211 until the sleeve-joint piece 122 is abutted against the flange section 1311 of the connecting piece 13. Then, the unlocking head 40 applies a reverse unlocking torque to the socket 122 and stably descends, the socket 122 and the connecting piece 13 reversely rotate and exit the nut under the release of gravity and the elasticity of the compression spring, and after the threaded section 1321 is completely separated from the nut, the connecting piece 13 continuously descends along with the socket 122 and the unlocking head 40. When the unlocking head 40 is completely withdrawn from the first through hole 1211, the flange section 1311 of the connecting member 13 abuts against the upper surface of the outer gear ring under the action of gravity, the outer gear ring is engaged with the inner gear ring through the outer conical teeth, and the top end of the threaded section 1321 of the connecting member 13 is kept extending out of the mounting hole 111.

Those skilled in the art will appreciate that although some embodiments described herein include some features included in other embodiments instead of others, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments. For example, in the claims of the present application, any of the claimed embodiments may be used in any combination.

So far, the technical solutions of the present application have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present application is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the present application, and the technical scheme after the changes or substitutions will fall into the protection scope of the present application.

Claims

1. A lock body assembly, characterized in that the lock body assembly comprises:

2. A lock body assembly as claimed in claim 1, wherein the anti-release member is a washer fixedly attached to the top inner wall of the mounting seat.

3. The lock body assembly of claim 2, wherein a countersunk hole is formed in the washer, a threaded hole is formed in the inner wall of the top of the mounting base, and a countersunk screw penetrates through the countersunk hole and then is screwed into the threaded hole, so that the washer is fixedly connected to the inner wall of the top of the mounting base.

4. The lock body assembly of claim 2, wherein the upper portion of the fastening portion is a threaded segment that is capable of passing through the mounting hole and being threaded to the target fastener.

5. The lock body assembly of claim 1, wherein the anti-release member is a washer, the washer is sleeved on a lower portion of the fastening portion, and a roughness of an upper surface of the washer is greater than a roughness of a lower surface thereof.

6. A lock body assembly according to claim 5, wherein the coefficient of friction between the upper surface of the washer and the top inner wall of the mounting seat is 2.0-2.5 times the coefficient of friction between the lower surface of the washer and the adjustment portion.

7. The lock body assembly of claim 5, wherein the upper portion of the securing portion is a threaded segment that is capable of passing through the mounting hole and being threaded to the target fastener.

8. The lock body assembly of claim 7, wherein the lower portion of the fastening portion is an optical axis section, the upper end of the optical axis section is connected to the threaded section, the lower end of the optical axis section is connected to the adjusting portion, and the washer is sleeved on the optical axis section.

9. The lock body assembly of claim 8, wherein an outer diameter of the optical axis segment is less than a thread outer diameter of the threaded segment and an inner diameter of the washer is less than the thread outer diameter of the threaded segment.

10. The lock body assembly of claim 1, wherein said anti-release member comprises:

11. The lock body assembly of claim 10, wherein a coefficient of friction between the first radial ridge and a top interior wall of the mounting socket is 2.0-2.5 times a coefficient of friction between the first wedge surface and the second wedge surface; and/or

12. The lock body assembly of claim 10, wherein the upper portion of the securing portion is a threaded section that is capable of passing through the mounting hole and threading to the target fastener.

13. The lock body assembly of claim 12, wherein the first and second wedge surfaces each have a slope that is greater than a lead angle of the threaded section.

14. The lock body assembly of claim 12, wherein the lower portion of the fastening portion is an optical axis section, an upper end of the optical axis section is connected to the threaded section, a lower end of the optical axis section is connected to the adjusting portion, and the first spacer and the second spacer are sleeved on the optical axis section.

15. The lock body assembly of claim 14, wherein an outer diameter of the optical axis segment is less than a threaded outer diameter of the threaded segment, and wherein an inner annular diameter of each of the first and second shims is less than the threaded outer diameter of the threaded segment.

16. A lock body assembly according to claim 4, 7 or 12, wherein the threaded section is a coarse thread.

17. The lock body assembly of claim 1, wherein a surface hardness of the anti-release member is greater than a surface hardness of the connector member.

18. The lock body assembly of claim 17, wherein the anti-release member has a surface hardness of 460 to 510 HV.

19. The lock body assembly of claim 1, wherein the first engagement structure is disposed on the top surface of the stop member, the top outer edge of the sleeve member extends outward to form a flange, and the second engagement structure is disposed on a lower surface of the flange.

20. The lock body assembly of claim 19, wherein the first engagement structure is an internal bevel and the second engagement structure is an external bevel.

21. The lock body assembly of claim 19, wherein an outer diameter of said flange is substantially equal to an inner diameter of said mounting.

22. The lock body assembly of claim 1, wherein the adjustment portion includes a flange section and a docking section, an upper surface of the flange section being coupled to the fastening portion and a lower surface being coupled to the docking section, the fourth engagement structure being disposed on the docking section.

23. The lock body assembly of claim 22, wherein the third engagement structure is a spline groove and the fourth engagement structure is a spline.

24. The lock body assembly of claim 1, wherein the anti-loosening mechanism further comprises an elastic member, two ends of the elastic member abut against the top surface of the socket and the inner wall of the top of the mounting seat respectively, and the elastic member is configured to have elastic potential energy capable of moving the socket toward the limiting member at all times.

25. The lock body assembly of claim 1, wherein in a state where the fastening portion is unfastened from the target fastener, the adjustment portion is disposed to abut against the socket by gravity, and the upper portion of the connector protrudes through the mounting hole.

26. A battery pack comprising a housing having the lock body assembly of any one of claims 1-25 disposed thereon.

27. A lock mechanism comprising a lock assembly and a lock body assembly as claimed in any one of claims 1 to 25, the lock body assembly being cooperatively connected with the lock assembly.

28. The latch mechanism of claim 27, wherein said latch assembly includes a stationary plate fixedly attachable to the vehicle, a floating plate floatably disposed on said stationary plate, and a latch member fixedly disposed on said floating plate.

29. A vehicle comprising a vehicle body, a battery pack, and the locking mechanism of claim 27 or 28, wherein the battery pack is connected to the vehicle body through the locking mechanism.