CN111204251A - Locking mechanism - Google Patents

Abstract

The invention discloses a locking mechanism, which comprises: the self-locking mechanism comprises a frame, a fixing structure, a transmission unit and a self-locking assembly, wherein the frame is provided with a fixing and retaining mechanism clamping block; the transmission unit includes: the self-locking mechanism comprises a first transmission part and a second transmission part, wherein the first transmission part and the second transmission part are matched and can realize self-locking; the self-locking assembly is used for locking and unlocking the second transmission part. According to the locking mechanism disclosed by the invention, the power battery is locked by the self-locking assembly, the battery replacement efficiency and safety are improved, and the risk that the power battery is loosened and even falls off due to vibration in the automobile running process is avoided.

Description

Locking mechanism

Technical Field

The invention relates to the technical field of new energy automobile battery replacement, in particular to a locking mechanism.

Background

In recent years, with the rapid development of new energy automobiles, the sales of electric automobiles in the global range is continuously increased, and due to the limitations of the cruising ability and the charging time of power batteries, electric automobile charging stations are developed around the world, so that the electric automobiles are actively promoted to be further popularized.

The battery replacement mode achieves the purpose of supplementing electric energy to the electric automobile by directly replacing the battery pack of the electric automobile, can realize quick supply of the electric energy, and is convenient for battery maintenance and service life prolonging.

Compared with the traditional electric vehicle charging mode, the power battery needs to be frequently assembled and disassembled in the battery replacement mode, and higher requirements are provided for the safety, convenience and the like of the power battery locking mechanism.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a locking mechanism, which has higher power exchange efficiency and higher safety and reliability.

The invention also provides a vehicle with the locking mechanism.

According to an embodiment of the invention, a locking mechanism comprises: a frame having a fixed retention mechanism clamp block; fixed knot constructs and transmission unit, transmission unit includes: the first transmission part self-locking outer teeth 311 are matched with the second transmission part, a supporting clamping part is arranged on the fixed structure, the supporting clamping part and the fixing and holding mechanism clamping block form a fixing and holding mechanism matching space, the transmission unit is arranged in the transmission unit accommodating cavity, and the supporting clamping part extends out of the transmission unit accommodating cavity; and the self-locking assembly is used for locking and unlocking the second transmission part.

According to the locking mechanism, the self-locking assembly is additionally arranged, and the self-locking assembly is used for locking and unlocking the second transmission part, so that the self-locking assembly can lock the clamping state after the battery pack is clamped by the fixing and holding mechanism clamping block and the supporting and clamping part in the battery pack replacing process, and the risk that the power battery is loosened and even falls off due to vibration in the automobile running process is avoided.

According to the locking mechanism of one embodiment of the invention, the self-locking assembly is configured to approach or depart from the second transmission part from the side direction of the second transmission part, so as to lock and unlock the second transmission part.

Further, the self-locking assembly is provided with a self-locking block rotating axis, and the self-locking assembly is configured to be close to or far away from the second transmission part in a swinging mode around the self-locking block rotating axis.

Optionally, the self-locking block rotation axis is spaced apart from and parallel to the second transmission portion.

Further, the self-locking assembly comprises: the self-locking block is provided with a rotation axis of the self-locking block, and the self-locking block abuts against the second transmission part through friction to lock the second transmission part.

Optionally, the self-locking assembly further comprises: and the return spring is connected with the self-locking block.

Optionally, the return spring is a return torsion spring.

Further, the self-locking block has a driving bevel adapted to cooperate with an upper end face of a tool, so that the self-locking block can swing about the self-locking block rotation axis.

Further, from the locking piece including locking piece body and installation department, be provided with on the installation department from the locking piece axle and perforate, the leading flank of locking piece body and the juncture of bottom surface are provided with the drive inclined plane, the drive inclined plane with the interval of second transmission portion presents the trend of increasing from last to down.

Further, still be provided with torsional spring installation position on the auto-lock piece body, the one end of answer spring with torsional spring installation position links to each other, the other end of answer spring with the frame links to each other.

According to the lock mechanism of one embodiment of the present invention, the first transmission portion is circular in a closed form and is configured to have a swing range of not less than 90 ° but not more than 150 °.

Further, the first transmission part has self-locking external teeth formed on a part of an outer peripheral surface of the circular first transmission part.

Optionally, the circle center angle corresponding to the part of the outer peripheral surface of the first transmission part provided with the self-locking external teeth is 90-120 °.

According to the locking mechanism provided by one embodiment of the invention, the first transmission part is a worm wheel, the second transmission part is a worm, and the worm wheel and the worm are matched in a one-way self-locking manner.

According to a vehicle of a first embodiment of the invention, a lock mechanism as described in any one of the first aspect is provided. The vehicle and the locking mechanism have the same advantages compared with the prior art, and the detailed description is omitted.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is an assembly schematic of a locking mechanism according to an embodiment of the invention;

FIG. 2 is a front view of a locking mechanism according to an embodiment of the invention;

FIG. 3 is an exploded view of a locking mechanism according to an embodiment of the present invention;

FIG. 4 is a front exploded view of a locking mechanism according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of the fixing structure of FIG. 3;

fig. 6 is a front view of the fixing structure of fig. 5.

Reference numerals:

the locking mechanism 100, the frame 1, the first frame body 11, the first receiving cavity 111, the first connecting wall 112, the fixing and retaining mechanism clamping block 1121, the first frame side wall 1122, the first supporting half hole 11221, the first fixing flange 113, the first reinforcing rib plate 114, the first supporting hole 115, the second frame body 12, the first bracket 121, the second bracket 122, the second fixing flange 1221, the upper bent side wall 1222, the second mounting position 12221, the second supporting half hole 12221, the lower bent side wall 1223, the bent portion 1224, the second connecting wall 123, the partition plate 124, the second supporting hole 1241, the first mounting hole 1242, the perforated torsion spring 1243, the second reinforcing rib plate 125, the second receiving cavity 126, the fixing structure 2, the arm 21, the long limb arm 211, the short limb arm 212, the boss portion 22, the transmission unit connecting pin hole, the first rib 2211, the mounting gap 222, the first connecting plate 23, the supporting portion 24, the groove 221, the locking device comprises a long groove part 251, a short groove part 252, a transmission unit 3, a first transmission part 31, self-locking external teeth 311, a second transmission part 32, a rack section 321, a tool matching section 322, an outer peripheral flange 323, a transmission unit connecting pin shaft 33, a fixed retaining mechanism matching space 4, a tool 5, a self-locking assembly 6, a self-locking block 61, a self-locking block body 611, a driving inclined plane 6111, a first mounting position 6112, a mounting part 612, a self-locking block shaft through hole 6121, a self-locking block rotating axis 613 and a restoring torsion spring 62.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

A locking mechanism 100 according to an embodiment of the present invention is described below with reference to fig. 1-6. As shown in fig. 1 to 6, a locking mechanism 100 according to an embodiment of the present invention includes: the frame 1, the fixing structure 2, the transmission unit 3 and the self-locking assembly 6, and the locking mechanism 100 can be used for quick replacement of the battery pack.

As shown in fig. 1 to 3, according to a locking mechanism 100 of an embodiment of the present invention, a frame 1 may include: first frame body 11 and second frame body 12, be provided with respectively on first frame body 11 and the second frame body 12 first hold the chamber 111 and the chamber 126 is held to the second, first chamber 111 that holds corresponds and constitutes the drive unit and holds the chamber with the second 126, drive unit 3 sets up and holds the intracavity and hold the chamber by the drive unit and carry out semi-enclosed protection to it at the drive unit, can prevent from that impurity such as external dust from getting into the drive unit and holding the chamber and producing the influence to the precision of drive unit 3, and then improve the installation accuracy of battery package.

Further, a fixing and holding mechanism clamping block 1121 is further disposed on the first frame body 11, the fixing and holding mechanism clamping block 1121 is adapted to face the supporting clamping portion 24 and form a fixing and holding mechanism fitting space 4 with the supporting clamping portion 24, the supporting clamping portion 24 extends out from the transmission unit accommodating cavity 111, for example, as shown in fig. 1, the supporting clamping portion 24 can extend out from the front of the transmission unit accommodating cavity 111.

The transmission unit 3 sets up and holds the intracavity and hold the chamber by the transmission unit and carry out semi-enclosed protection to it at the transmission unit, can prevent from this that impurity such as external dust from getting into the transmission unit and holding the chamber and producing the influence to the precision of transmission unit 3, and then improve the installation accuracy of battery package. Further, the transmission unit 3 may include: the first transmission part 31 and the second transmission part 32 are matched with each other, and self-locking can be achieved, optionally, the first transmission part 31 and the second transmission part 32 can be matched in a one-way self-locking manner, so that the second transmission part 32 can drive the first transmission part 31 to move, and the first transmission part 31 can move to a position suitable for forming the fixing and holding mechanism matching space 4 with the fixing and holding mechanism clamping block 1121, or can leave the position forming the fixing and holding mechanism matching space 4 with the fixing and holding mechanism clamping block 1121 under the driving of the first transmission part 31, and when the second transmission part 32 is static, the second transmission part 32 locks the first transmission part 31 by utilizing the one-way self-locking, so that the first transmission part 31 keeps a static state. It should be noted that the term "stationary" herein does not mean that the first transmission unit 31 and the second transmission unit 32 are absolutely not stationary, but means that the first transmission unit 31 cannot move relative to the second transmission unit 32, and the heights of the first transmission unit 31 and the second transmission unit 32 relative to the ground can be changed under different driving conditions of the vehicle.

It can be understood that, in the transmission unit 3, the first transmission part 31 can be driven to move only by the second transmission part 32, but the second transmission part 32 cannot be driven to move by the first transmission part 31, so that the safety and reliability of the locking mechanism 100 can be improved by utilizing the unidirectional self-locking property.

It can be understood that, when installing the battery pack, the tool 5 is engaged with the second transmission portion 32 and drives the second transmission portion 32 to rotate, and the second transmission portion 32 drives the first transmission portion 31 to rotate, so as to drive the fixing structure 2 to swing until the supporting and clamping portion 24 on the fixing structure 2 stops against the bottom of the battery pack, and clamps the fixing and holding mechanism together with the fixing and holding mechanism clamping block 1121 on the first frame body 11, thereby achieving the quick replacement of the battery pack.

The auto-lock subassembly 6 can be used to lock and unblock second transmission portion 32, specifically, when needing to change the battery package, operating personnel can use instrument 5 drive second transmission portion 32 to rotate, and make auto-lock subassembly 6 and second transmission portion 32 separation, second transmission portion 32 drives first transmission portion 31 and fixed knot structure 2 motion, until the support clamping part 24 of fixed knot structure 2 and the laminating of battery package, at this moment, loosen instrument 5, auto-lock subassembly 6 gets back to initial position once more, and contact with second transmission portion 32, and can prevent the motion of second transmission portion 32, thereby lock second transmission portion 32, just so guaranteed the fail safe nature of battery package in the change process.

According to the locking mechanism 100 provided by the invention, the self-locking assembly 6 is additionally arranged, and the self-locking assembly 6 is utilized to lock and unlock the second transmission part 32, so that a double self-locking function is realized, after the battery pack is clamped by the fixing and maintaining mechanism clamping block 1121 and the supporting and clamping part 24 in the battery pack replacement process, the self-locking assembly 6 can lock the clamping state, the risk that a power battery is loosened or even falls off due to vibration in the automobile operation process is avoided, and the locking reliability and the battery replacement safety of the locking mechanism 100 are improved.

Wherein the self-locking assembly 6 is configured to approach or move away from the second transmission part 32 from the side of the second transmission part 32, thereby locking and unlocking the second transmission part 32. Optionally, the self-locking assembly 6 has a self-locking block rotation axis 613, the self-locking block rotation axis 613 being spaced apart from the second transmission part 32 in parallel, the self-locking assembly 6 being configured to approach or move away from the second transmission part 32 in an oscillating manner about the self-locking block rotation axis 613.

Further, as shown in fig. 3 and 4, the self-locking assembly 6 may include: a self-locking block 61 and a return spring, wherein the self-locking block 61 has a self-locking block rotation axis 613, and the self-locking block is adapted to be stopped against the second transmission portion 32 by friction to lock the second transmission portion 32, optionally, the self-locking block 61 can be disposed between the second connecting wall 123 and the partition plate 124, and the self-locking block 61 comprises a mounting portion 612, a self-locking block shaft through hole 6121 is disposed on the mounting portion 612, a center line of the self-locking block shaft through hole 6121 is the self-locking block rotation axis 613, the self-locking block rotation axis 613 is parallel to and spaced from an axis of the second transmission portion 32, the self-locking block 61 is close to or far away from the second transmission portion 32 in a swinging manner around the self-locking block rotation axis 613, the return spring is connected to the self-locking block 61, optionally, the self-locking block 61 can be designed as a self-locking friction member, that is, the self-locking block 61 mainly uses friction force exerted on the second transmission portion 32 to lock the, The locking is reliable, the processing mode of the self-locking block 61 is simple, and the forming is easy.

Further, a close contact is provided between the self-locking friction member (self-locking block 61) and the second transmission part 32, and normally, the close contact can completely prevent the rotation of the self-locking friction member under the action of the return spring, so that the rotation of the second transmission part 32 can be completely prevented.

Optionally, the restoring spring in the embodiment of the present invention may be a restoring torsion spring 62, so that after the battery pack is clamped, the self-locking block 61 may swing to a state of contacting with the second transmission portion 32 again under a large enough restoring force of the restoring torsion spring 62, so as to lock the second transmission portion 32, thereby preventing the battery pack from loosening or falling off due to the vibration of the vehicle.

Alternatively, as shown in fig. 3 and 4, the self-locking block 61 may have a driving inclined surface 6111, the driving inclined surface 6111 is disposed on a side of the self-locking block 61 facing the second transmission part 32, and specifically, the self-locking block 61 may include: the self-locking block body 611, the driving inclined plane 6111 is arranged at the junction of the front side surface and the bottom surface of the self-locking block body 611, the distance between the driving inclined plane 6111 and the second transmission part 32 increases from top to bottom, and the driving inclined plane 6111 is suitable for being matched with the end surface of the tool 5, namely, after the driving inclined plane 6111 receives an external force which is consistent with the axial direction of the second transmission part 32, the self-locking block 61 can swing around the self-locking block rotating axis 613, so that unlocking and locking of the second transmission part 32 are realized, and meanwhile, the labor of an operator can be saved in the operation process.

Alternatively, in an embodiment of the present invention, as shown in fig. 3, the first transmission part 31 may adopt a conventional worm wheel structure, that is, the entire outer circumferential surface of the worm wheel is formed with self-locking external teeth 311, so that, in the case of a serious wear of the worm wheel, the worm wheel can be replaced conveniently, thereby improving the versatility of the worm wheel.

Of course, in other embodiments, as shown in fig. 4, the first transmission part 31 is circular in a closed form and is configured to have a swing range of not less than 90 ° but not more than 150 °, i.e., the swing angle of the first transmission part 31 may be 90 ° -150 °. Further, the first transmission part 31 is provided with the self-locking external teeth 311, the self-locking external teeth 311 are formed on a part of the outer peripheral surface of the circular first transmission part 31, and the central angle corresponding to the part of the outer peripheral surface provided with the self-locking external teeth 311 can be 90-120 degrees, that is, the first transmission part 31 can rotate at least 90 degrees, so that the supporting clamping part 24 can swing to the horizontal position from the vertical position, the clamping and clamping effect on the fixing and holding mechanism is achieved, meanwhile, waste caused by excessive teeth machined on the first transmission part 31 can be prevented, the machining time of the first transmission part 31 is saved, and the production efficiency is improved.

It can be understood that when the first transmission part 31 is moved to a position where the support clamp 24 and the fixed holding mechanism clamping block 1121 form the fixed holding mechanism fitting space 4, the support clamp 24 is disposed below the fixed holding mechanism clamping block 1121 in a horizontal posture, that is, when the first transmission part 31 is rotated by 90 °, the support clamp 24 can be swung from a vertical position to a horizontal position, thereby performing a clamping function on the fixed holding mechanism. When the first transmission part 31 rotates by an angle greater than 90 °, the support clamping part 24 is disposed below the fixed holding mechanism clamping block 1121 so as to cross the horizontal posture and make a small angle with the horizontal posture, so that an upward clamping force can be applied to the fixed holding mechanism, facilitating clamping of the battery pack. Therefore, the design of the first transmission part 31 with different rotation angles can meet the requirements of different battery quick-change devices and different rotation angle unlocking.

The first transmission portion 31 may be a worm wheel, the second transmission portion 32 may be a worm, and the worm wheel and the worm are matched in a unidirectional self-locking manner. Optionally, self-locking external teeth 311 may be disposed on both the worm wheel and the worm, so that reverse self-locking may be achieved, that is, only the second transmission portion 32 (e.g. the worm) may drive the first transmission portion 31 (e.g. the worm wheel) to rotate, but not the first transmission portion 31 may drive the second transmission portion 32 to move, so that the reverse self-locking performance may be utilized to perform a safety protection function on the transmission unit 3. The fixing structure 2 is provided with a supporting clamping portion 24, and the supporting clamping portion 24 extends from the front of the transmission unit accommodating cavity and forms a fixing and holding mechanism clamping space together with the fixing and holding mechanism clamping block 1121, so as to play a role of clamping and supporting the fixing and holding mechanism.

According to an embodiment of the present invention, as shown in fig. 3 and 4, the second transmission part 32 (e.g., worm) may include: a body portion and a peripheral flange 323, further, the upper section of the body portion is configured as a rack section 321, the lower section of the body portion is a tool engaging section 322, the rack section 321 and the tool engaging section 322 are separated by the peripheral flange 323, and the peripheral flange 323 is adapted to be friction-fitted with the self-locking block 61 and in close contact with each other, thereby defining a relative movement therebetween, locking the second transmission portion 32, preventing the second transmission portion 32 from being inverted.

Optionally, the outer circumferential flange 323 of the embodiment of the present invention may be a circular flange or a polygonal flange, and meanwhile, the outer circumferential surface of the outer circumferential flange 323 may be provided with a strong friction member, so as to improve the locking reliability of the self-locking assembly 6.

Optionally, the rack segment 321 has a self-locking external tooth 311, so that the transmission unit 3 can be locked by using a reverse self-locking function of a worm gear to initially realize self-locking of the locking mechanism 100, and the second transmission part 32 is further locked by using the self-locking assembly 6 to play a role of double insurance, thereby obtaining a more safe and reliable battery replacement mode.

The tool engagement section 322 may be configured as a polygon prism, for example, the tool engagement section 322 may be a hexagonal prism structure, so that an operator can operate the second transmission part 32 by using a universal tool 5, and the locking mechanism 100 has high versatility.

Optionally, as shown in fig. 3, a locking mechanism 100 according to an embodiment of the present invention may be provided with a self-locking block mounting location, where the self-locking block mounting location includes: a first mounting hole 1242 and a second mounting hole (not shown), wherein the first mounting hole 1242 is disposed on the partition plate 124, the second mounting hole can be disposed on the second connecting wall 123, and the self-locking block shaft can pass through the self-locking block 61 and then be mounted on the first mounting hole 1242 and the second mounting hole, thereby implementing the mounting of the self-locking block 61, and the self-locking block 61 can rotate around the self-locking block rotation axis 613. The self-locking block 61 can be located between the partition plate 124 and the second connecting wall 123, so that the space in the second frame body 12 is fully utilized, the structure in the second frame body 12 is compact, the layout is reasonable, and the size of the second frame body 12 is reduced.

Optionally, the locking mechanism 100 according to the embodiment of the present invention may further include a torsion spring mounting position, and further, the torsion spring mounting position may include: a first mounting location 6112 and a second mounting location 12221, as shown in fig. 4, the first mounting location 6112 may be disposed on the self-locking block body 611, the second mounting location 12221 may be disposed on one of the upper bending side walls of the second frame body 12, and the separation plate 124 may further be disposed with a torsion spring through hole 1243, the torsion spring through hole 1243 is located between the second supporting hole 1241 and the first mounting hole 1242, such that one end of the torsion spring after passing through the torsion spring through hole 1243 is connected to the self-locking block 61, and the other end is connected to the bending side wall, thereby the self-locking function of the transmission unit 3 may be achieved through the self-locking block 61 and the torsion spring, so as to further ensure the operational reliability of the transmission unit 3, and ensure that the battery pack does not fall off due to the inversion of the transmission unit 3 during the clamping assembly process of the supporting and clamping block 24 and the fixing and holding mechanism 1121, thereby improving the safety and reliability of the locking.

In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.

In the description of the invention, "above", "over" and "above" a first feature in a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

In addition, according to an embodiment of the present invention, the first frame body 11 and the second frame body 12 are fixed, as shown in fig. 2 and 4, the first frame body 11 may be provided with a first supporting half hole 11221, the second frame body 12 may be provided with a second supporting half hole 12221, and the first supporting half hole 11221 and the second supporting half hole 12221 form a pin supporting hole correspondingly, so that the transmission unit connecting pin 33 may pass through the pin supporting hole to mount and connect the transmission unit 3 on the frame 1, and the connection is convenient, and the entire locking mechanism 100 is compact.

Further, as shown in fig. 3, the second frame body 12 has an adjusting hole, the second transmission portion 3232 can be fitted in the adjusting hole, and the lower end of the second transmission portion 32 extends out of the adjusting hole, so that the operator can adjust the second transmission portion 32 by using the tool 5, and then the first transmission portion 31 and the fixing structure 2 are driven to rotate, and finally the battery pack is clamped.

According to an embodiment of the present invention, as shown in fig. 1 and 3, the first frame body 11 may include: the first connecting wall 112, the first frame side walls 1122 and the first fixing flanges 113, the two first frame side walls 1122 extend downward from two side edges of the first connecting wall 112, the first fixing flanges 113 extend from the lower ends of the corresponding first frame side walls 1122 toward the direction away from the first connecting wall 112, and the portions of the first connecting wall 112, which exceed the first frame side walls 1122 in the front-rear direction, form the fixing and retaining mechanism clamping blocks 1121, so that the fixing and retaining mechanism clamping blocks 1121 are reserved on the first frame body 11 directly without separately processing the fixing and retaining mechanism clamping blocks 1121, so that the processing and forming process of the fixing and retaining mechanism clamping blocks 1121 and the first frame body 11 is simple, the assembly process can be omitted, and the processing time can be saved.

Optionally, as shown in fig. 1 to 4, a first reinforcing rib plate 114 may be disposed between the first frame side wall 1122 and the first fixing flange 113, the first reinforcing rib plate 114 is spaced apart from the first frame body 11 in the front-rear direction, a second reinforcing rib plate 125 may be disposed between the upper bending side wall 1222 and the second fixing flange 1221, and the second reinforcing rib plate 125 is spaced apart from the second frame body 12 in the front-rear direction, so that the strength of the first frame body 11 and the strength of the second frame body 12 can be effectively increased by the plurality of first reinforcing rib plates 114 and the plurality of second reinforcing rib plates 125 spaced apart from each other, which is beneficial to improving the strength of the entire frame 1 and prolonging the service life of the frame 1.

According to an embodiment of the present invention, as shown in fig. 3, the second frame body 12 may include: a first bracket 121, a second bracket 122, and a second connection wall 123, the second connection wall 123 is connected between the first bracket 121 and the second bracket 122, and the second connection wall 123 is configured as a bent plate bent in a wave, whereby the strength of the second connection wall 123 is high. Further, each of the first and second brackets 121 and 122 may include: the fixed turn-ups 1221 of second and the lateral wall of buckling, two lateral walls of buckling and second connecting wall 123 between form the second and hold chamber 126, and furthermore, the lateral wall of buckling can include: the frame comprises an upper bent side wall 1222 and a lower bent side wall 1223, wherein the upper bent side wall 1222 extends downwards from the inner side edge of the second fixing flange 1221, the lower bent side wall 1223 is offset inwards relative to the upper bent side wall 1222, and a bent portion 1224 is arranged between the upper bent side wall 1222 and the lower bent side wall 1223, so that the strength of the bent side wall formed by connecting the upper bent side wall 1222, the bent portion 1224 and the lower bent side wall 1223 is high, and the service life of the frame 1 is prolonged.

Further, as shown in fig. 3, a partition plate 124 may be disposed between the first bracket 121 and the second bracket 122, the partition plate 124 is located above the second connecting wall 123, and the partition plate 124 is supported between the two bent portions 1224, so that the partition plate 124 provides a worm mounting position and a self-locking mechanism mounting position for the locking mechanism 100 while the partition plate 124 reinforces the second frame body 12.

As shown in fig. 4, the first connecting wall 112 of the first frame body 11 may be provided with a first support hole 115, and the partition plate 124 may be provided with a second support hole 1241, so that the support of the second transmission part 32 and the installation of the second transmission part 32 on the frame 1 may be achieved through the first support hole 115 and the second support hole 1241.

Further, an adjusting hole can be formed in the second connecting wall 123, the second transmission portion 32 can be matched with the adjusting hole after extending out of the second supporting hole 1241, and the lower end of the second transmission portion 32 extends out of the adjusting hole, so that the operator can adjust the second transmission portion 32 by using the tool 5, the first transmission portion 31 and the fixing structure 2 are driven to rotate, and the battery pack is finally clamped.

According to an embodiment of the present invention, as shown in fig. 5 and 6, the fixing structure 2 may include: two support arms 21, be connected with between the one end of two support arms 21 and support clamping part 24, the other end of every support arm 21 is connected with a boss portion 22, the inner peripheral surface of boss portion 22 is formed with transmission unit connecting pin shaft hole 221, transmission unit connecting pin shaft 33 can pass transmission unit connecting pin shaft hole 221 in order to assemble first transmission portion 31 to frame 1, it is spaced apart in order to form installation clearance 222 between two boss portions 22, first transmission portion 31 can imbed in installation clearance 222 and pass through transmission unit connecting pin shaft 33 with fixed knot structure 2 and link to each other, thereby make first transmission portion 31 drive fixed knot structure 2 luffing motion after rotating, finally press from both sides the battery package tightly, and the connection of transmission unit 3 is compact, is favorable to reducing the size of transmission unit 3.

Further, as shown in fig. 5 and 6, each support arm 21 may include a long limb 211 and a short limb 212, the long limb 211 extends from the boss portion 22 to the support clamping portion 24, the short limb 212 is bent upward from an end of the long limb 211 away from the boss portion 22, the support clamping portion 24 is connected between the short limbs 212 of the two support arms 21, and an upper end surface of the support clamping portion 24 is configured as a plane on which an elastic adhesive layer is disposed, optionally, the elastic adhesive layer may be integrally formed on the support clamping portion 24, or may be connected to the support clamping portion 24 by adhesive, so that, by adding the elastic adhesive layer, the support clamping portion 24 and the fixing and holding mechanism can be completely contacted, and the force-bearing area of the support clamping portion 24 is increased.

Alternatively, the two arms 21 are spaced apart, and a first connecting plate 23 and a second connecting plate may be connected between the two arms 21, an upper surface of the first connecting plate 23 extends upward and is connected to the support clamp 24, a lower surface of the first connecting plate 23 is spaced apart from a lower surface of each arm 21, an upper end of the second connecting plate is connected to an end surface of the first connecting plate 23 facing the boss portion 22, and a lower end of the second connecting plate extends downward to be flush with the lower surfaces of the two arms 21 (not shown in the figure), so that the first connecting plate 23 and the second connecting plate can support the two arms 21, strength of the arms 21 can be increased, and the whole fixing structure 2 has light weight.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

As shown in fig. 5, the inner surface of the arm 21 may be a plane, and the outer surface of the arm 21 may be provided with a groove 25, and further, the groove 25 may include: the long groove part 251 and the short groove part 252, the long groove part 251 is arranged on the long limb 211 and has the same extension trend with the long limb 211, the short groove part 252 is arranged on the short limb 212 and has the same extension trend with the short limb 212, and the long groove part 251 is communicated with the short groove part 252, so that the strength of the support arm 21 can be effectively increased by arranging the groove 25 on the outer surface of the support arm 21, the quality of the fixing structure 2 is favorably lightened, and the forming and the processing of the fixing structure 2 can be easily realized only by processing the groove 25 on the outer surface.

Further, the end face of the first connecting plate 23 facing the boss portion 22 is spaced apart from the boss portion 22, so that a mounting gap 222 with three open sides is formed between the two boss portions 22 to facilitate the fitting of the first transmission portion 31 with the fixed structure 2.

Further, the wall surface of the transmission unit connecting pin hole 221 may be provided with a plurality of first protruding ridges 2211 distributed at intervals in the circumferential direction, meanwhile, the wall surface of the central hole of the first transmission part 31 may also be provided with a plurality of second protruding ridges distributed at intervals in the circumferential direction, the outer circumferential surface of the transmission unit connecting pin 33 may be provided with a plurality of grooves 25 distributed at intervals in the circumferential direction, after the transmission unit connecting pin 33 penetrates through the fixing structure 2 and the first transmission part 31, the plurality of first protruding ridges 2211 may be respectively fitted in the plurality of groove 25 structures, and the plurality of second protruding ridges may also be respectively fitted in the plurality of groove 25 structures, so that the fixing structure 2 and the first transmission part 31 may rotate synchronously, and the fixing structure 2 is prevented from rotating relative to the first transmission part 31 and not swinging to a corresponding position.

In the description of the present invention, "a plurality" means two or more.

The following describes a specific process of locking the power battery of the new energy automobile in the power conversion mode by using the locking mechanism 100:

referring to fig. 3 and 4, when the tool 5 is moved upward, the driving inclined surface 6111 is forced upward to rotate the self-locking block 61 about the self-locking block rotation axis 613, and at this time, the second transmission part 32 closely contacted with the self-locking block 61 can be separated from the self-locking block, the second transmission part 32 moves upwards under the action of the upward force, the restoring torsion spring 62 is gradually deformed in the process, and accumulates elastic recovery energy, further, the freely movable second transmission part 32 continues to move upwards until the supporting and clamping part 24 on the fixed structure contacts with the fixed holding mechanism, at this time, the supporting and clamping part 24 and the fixed holding mechanism clamping block 1121 clamp the fixed holding mechanism, at this time, the tool 5 is retracted, the self-locking piece 61 is released, and the self-locking piece 61 can be restored to a state of being in close contact with the second transmission part 32 by the elastic restoring force of the restoring torsion spring 62, and the second transmission part 32 is locked.

In summary, according to the locking mechanism 100 of the present invention, by adding the self-locking assembly 6 and using the self-locking assembly 6 to lock and unlock the second transmission portion 32, a dual self-locking function is achieved, so that after the battery pack is clamped by the fixing and holding mechanism clamping block 1121 and the supporting and clamping portion 24 during the battery pack replacement process, the self-locking assembly 6 can lock the clamped state, thereby avoiding the risk that the power battery is loosened or even falls off due to vibration during the operation of the vehicle, and improving the locking reliability and the battery replacement safety of the locking mechanism 100. .

The invention further provides a vehicle which comprises the locking mechanism 100, so that the requirements of easiness in operation, stability and reliability in locking and the like can be met on the premise of controlling the cost.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (15)

1. A locking mechanism (100) comprising:

a frame (1), the frame (1) having a fixed retention mechanism clamping block (1121);

-a fixed structure (2) and-a transmission unit (3), the transmission unit (3) comprising: the self-locking mechanism comprises a first transmission part (31) and a second transmission part (32), wherein the first transmission part (31) and the second transmission part (32) are matched and can realize self-locking, a supporting clamping part (24) is arranged on the fixing structure (2), the supporting clamping part (24) and a fixing and holding mechanism clamping block (1121) form a fixing and holding mechanism matching space (4), the transmission unit (3) is arranged in the frame, and the supporting clamping part (24) extends out of the frame;

the self-locking assembly (6), the self-locking assembly (6) is used for locking and unlocking the second transmission part (32).

2. The locking mechanism (100) according to claim 1, wherein the self-locking assembly (6) is configured to be close to or far from the second transmission portion (32) from a side of the second transmission portion (32) so as to lock and unlock the second transmission portion (32).

3. The locking mechanism (100) according to claim 2, wherein the self-locking assembly (6) has a self-locking block rotation axis (613), the self-locking assembly (6) being configured to approach or move away from the second transmission part (32) in an oscillating manner about the self-locking block rotation axis (613).

4. The locking mechanism (100) of claim 3 wherein said self-locking block rotational axis (613) is spaced parallel to said second transmission (32).

5. The locking mechanism (100) according to claim 1, wherein the self-locking assembly (6) comprises: a self-locking block (61), the self-locking block (61) having the self-locking block rotation axis (613), the self-locking block being stopped against the second transmission part (32) by friction to lock the second transmission part (32).

6. The locking mechanism (100) according to claim 5, wherein the self-locking assembly (6) further comprises: a return spring connected to the self-locking block (61).

7. The latching mechanism (100) of claim 6 wherein the return spring is a return torsion spring (62).

8. The locking mechanism (100) according to claim 6, wherein the self-locking block (61) has a driving bevel (6111), the driving bevel (6111) being adapted to cooperate with an upper end face of a tool (5) so that the self-locking block (61) can swing around the self-locking block rotation axis (613).

9. The locking mechanism (100) according to claim 8, wherein the self-locking piece (61) comprises a self-locking piece body (611) and a mounting portion (612), a self-locking piece shaft through hole (6121) is formed in the mounting portion (612), the driving inclined surface (6111) is arranged at the junction of the front side surface and the bottom surface of the self-locking piece body (611), and the distance between the driving inclined surface (6111) and the second transmission portion (32) increases from top to bottom.

10. The locking mechanism (100) according to claim 9, wherein the self-locking block body (611) is further provided with a torsion spring mounting position, one end of the return spring is connected with the torsion spring mounting position, and the other end of the return spring is connected with the frame (1).

11. The locking mechanism (100) according to claim 1, wherein the first transmission portion (31) is circular in a closed form and is configured to have a swing range of not less than 90 ° but not more than 150 °.

12. Locking mechanism (100) according to claim 11, characterized in that the first transmission part (31) has a self-locking external toothing (311), the self-locking external toothing (311) being formed on a portion of the outer circumferential surface of the circular first transmission part (31).

13. Locking mechanism (100) according to claim 12, characterised in that the portion of the outer circumference of the first transmission part (31) provided with self-locking outer teeth (311) corresponds to a centre angle of 90 ° -120 °.

14. The locking mechanism (100) according to claim 1, wherein the first transmission part (31) is a worm wheel and the second transmission part (32) is a worm, the worm wheel and the worm cooperating in a one-way self-locking manner.

15. A vehicle, characterized in that it comprises a locking mechanism (100) according to any one of claims 1-14.

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