CN111114375A - System for locking or unlocking a second component under a first component - Google Patents

Abstract

The invention discloses a system for locking or unlocking a second member below a first member, which comprises a plurality of locking devices and a self-locking assembly, wherein the plurality of locking devices are used for fixing the second member below the first member, the locking devices are fixed on the first member and/or the second member, and each locking device comprises: the transmission unit is used for driving the fixing structure to rotate so as to enable the fixing structure to move to a position suitable for fixing the second component below the first component or leave the position; the self-locking assembly is used for locking and unlocking the second transmission part. According to the system for locking or unlocking the second component below the first component, the transmission unit is locked by the self-locking assembly, so that the mounting reliability of the second component on the first component is improved, and the risk of loosening and even falling of the second component is prevented.

Description

System for locking or unlocking a second component under a first component

Technical Field

The invention relates to the technical field of battery replacement of new energy automobiles, in particular to a system for locking or unlocking a second component under a first component.

Background

Power batteries on electric or hybrid vehicles are replaced by automated equipment. After the power battery is installed, the power battery needs to be locked and fixed, and the firmer the power battery is installed, the higher the safety is. However, the power battery needs to be unlocked when the battery is replaced, so that the power battery is easier and quicker to mount and dismount as well as better. The locking device thus directly determines the safety and reliability of the power battery when it is on board and the ease of replacement.

The existing quick-replacement power battery is flexibly fixed with a vehicle through a locking device, the power battery can vibrate in a certain amplitude relative to a vehicle body in the running process of the vehicle, and the phenomena of local deformation of the power battery, deformation of a suspension point of the vehicle body battery, local abrasion of the locking device and the like can occur after long-term use, so that the running safety of the vehicle is seriously endangered. The existing locking device for quickly replacing the power battery on the vehicle cannot solve the problems, so that the locking device for the power battery, which is safe, reliable and convenient to replace and can prevent the battery box from loosening in the long-term vibration using process of the vehicle body, is needed in the field.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. To this end, it is an object of the invention to propose a system for locking or unlocking a second component below a first component, which system is more power efficient and safer.

A system for locking or unlocking a second member below a first member according to an embodiment of the present invention includes a plurality of locking devices for fixing the second member below the first member, the locking devices being fixed to the first member and/or the second member, and each of the locking devices including: a fixing structure and a transmission unit for driving the fixing structure to rotate so that the fixing structure can move to or away from a position suitable for fixing the second member below the first member; the system further comprises: and the self-locking assembly is used for locking and unlocking the transmission unit.

According to the system for locking or unlocking the second component under the first component, the self-locking assembly is added, and the transmission unit is locked and unlocked by the self-locking assembly, so that the power battery can be locked and fixed by the self-locking assembly after the power battery is installed, and the risk that the power battery is loosened or even falls off due to vibration in the running process of an automobile is avoided.

According to one embodiment of the invention, a system for locking or unlocking a second member below a first member, the transmission unit comprises: 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.

Optionally, the self-locking assembly is configured to approach or depart from the second transmission part from a lateral direction of the second transmission part, thereby locking and unlocking the second transmission part.

Further, the self-locking assembly has a self-locking block rotation axis, and the self-locking assembly is configured to approach or separate from the second transmission part in a swinging manner around the self-locking block rotation 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.

The system for locking or unlocking a second member below a first member according to one embodiment of the invention further comprises an actuating means separable from the first member and the second member, the actuating means being arranged at least for driving the transmission unit so that the transmission unit can bring the fixation structure into or out of a position suitable for fixing the second member below the first member.

Further, the actuating means comprises: the sleeve is actuated.

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

Further, the system further comprises an actuating tool separable from the first member and the second member, the self-locking block having a drive ramp adapted to engage an upper end surface of the actuating tool to thereby enable the self-locking block to swing about the self-locking block rotational 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.

A system for locking or unlocking a second member below a first member according to one embodiment of the present invention further comprises: a frame, the frame comprising: first frame body and second frame body, first frame body with be provided with respectively on the second frame body first hold the chamber and the chamber is held to the second, first hold the chamber with the second holds the chamber and corresponds and constitute the drive unit and hold the chamber, still be provided with fixed retaining mechanism grip block on the first frame body, fixed knot constructs and is provided with the support clamping part, the support clamping part is followed the place ahead that the drive unit held the intracavity is stretched out, fixed retaining mechanism grip block be suitable for with support clamping part just right and support and form fixed retaining mechanism cooperation space between the clamping part.

Optionally, a support structure is provided on the frame for supporting the second transmission part.

Optionally, the first frame body is provided with a first support hole, the first support hole constitutes one part of the support structure, and the second frame body is provided with a second support hole, the second support hole constitutes another part of the support structure.

Furthermore, the second frame body is also provided with an adjusting hole.

A system for locking or unlocking a second member beneath a first member, the first member being an electric or hybrid motor vehicle chassis, the second member being a power battery, according to one embodiment of the invention.

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 assembled schematic view of a locking device according to an embodiment of the invention;

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

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

FIG. 4 is a front exploded view of a locking device 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 fixation structure of FIG. 5;

fig. 7 is a diagram of a profile of a secure retention mechanism on a battery pack housing and a schematic diagram of a locking device according to an embodiment of the invention.

Reference numerals:

the locking device 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 recess 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, an actuating tool 5, an actuating sleeve 51, a matching part 52, 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, a restoring torsion spring 62, a shell 10, two longitudinal side edges 101, transverse side edges 102, a first group of fixed retaining mechanisms 1a and a second group of fixed retaining mechanisms 1 b.

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.

In the related art, a plurality of locks are used to mount the second member below the first member, and hooks in the locks are configured to be in contact fit with pins on the second member and to apply a pulling force to the second member, and during the process of pulling the second member, the flexible blade is deformed and applies a pressing force to the worm to lock the transmission, but the locking force of the flexible blade is limited, and the transmission cannot be locked well sometimes, and the safety reliability is not high.

A system for locking or unlocking a second member below a first member, which may be used in the quick change of a power battery, according to an embodiment of the present invention is described below with reference to fig. 1-7. Alternatively, the system may include a plurality of locking devices 100 and a self-locking assembly 6, the plurality of locking devices 100 being used to secure a second member (e.g., a power battery) under a first member (e.g., a vehicle chassis), the locking devices 100 being secured to the first member and/or the second member, i.e., the locking devices 100 may be secured to the first member and also to the second member, and each locking device 100 may include: a fixed structure 2 and a transmission unit 3, the transmission unit 3 being used for driving the fixed structure 2 to rotate, thereby enabling the fixed structure 2 to move to or away from a position suitable for fixing a second component below the first component; the self-locking assembly 6 is used for locking and unlocking the transmission unit 3.

It should be noted that the first component in the embodiment of the present invention may be an electric or hybrid motor vehicle chassis, and the second component may be a power battery.

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 device 100 can be improved by utilizing the unidirectional self-locking property.

It can be understood that, when the power battery is installed, the actuating 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 clamping portion 24 on the fixing structure 2 abuts against the bottom of the power battery and clamps the fixing and holding mechanism together with the fixing and holding mechanism clamping block 1121 on the first frame body 11, so as to achieve the quick replacement of the power battery.

The self-locking assembly 6 can be used for locking and unlocking the second transmission part 32 in the transmission unit 3, specifically, when the power battery needs to be replaced, an operator can use the actuating tool 5 to drive the second transmission part 32 to rotate, the self-locking assembly 6 is separated from the second transmission part 32, the second transmission part 32 drives the first transmission part 31 and the fixing structure 2 to move until the supporting and clamping part 24 of the fixing structure 2 is attached to the power battery, at the moment, the actuating tool 5 is released, the self-locking assembly 6 returns to the initial position again and contacts with the second transmission part 32, the second transmission part 32 can be prevented from moving, the second transmission part 32 is locked, and therefore the safety and reliability of the power battery in the replacement process are guaranteed.

According to the locking device 100 of the invention, by adding the self-locking assembly 6 and utilizing the self-locking assembly 6 to lock and unlock the second transmission part 32, a double self-locking function is realized, so that after the power battery is clamped by the fixing and holding mechanism clamping block 1121 and the supporting and clamping part 24 in the process of replacing the power battery, the self-locking assembly 6 can lock the clamping state, thereby avoiding the risk that the power battery is loosened or even falls off due to vibration in the process of operating an automobile, and improving the locking reliability and the battery replacement safety of the locking device 100.

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 power battery 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, and ensure that the power battery does not get loose or fall off due to the vibration of the vehicle.

Optionally, as shown in fig. 3, a locking device 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 device 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 position 6112 and a second mounting position 12221, as shown in fig. 4, the first mounting position 6112 may be disposed on the self-locking block body 611, the second mounting position 12221 may be disposed on one of the upper bent sidewalls of the second frame body 12, and the partition plate 124 may be further provided with a torsion spring through hole 1243, the torsion spring through hole 1243 is located between the second support hole 1241 and the first mounting hole 1242, thus, after the torsion spring passes through the torsion spring through hole 1243, one end of the torsion spring is connected with the self-locking block 61, the other end is connected with the bending side wall, therefore, the self-locking function of the transmission unit 3 can be realized through the self-locking block 61 and the torsion spring, so as to further ensure the working reliability of the transmission unit 3, and ensure that the power battery cannot fall off due to the inversion of the transmission unit 3 in the clamping and assembling process of the support clamping portion 24 and the fixing and retaining mechanism clamping block 1121, thereby improving the safety and reliability of the locking device 100.

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.

According to one embodiment of the invention, the system for locking or unlocking a second member below a first member further comprises an actuating means 5 separable from the first member and the second member, the actuating means 5 being arranged at least for driving the transmission unit 3, so that the transmission unit 3 can bring the fixing structure 2 into or out of a position suitable for fixing the second member below the first member, thereby enabling the installation or removal of the power battery.

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 device 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 in a polygonal prism shape, for example, the tool engagement section 322 may be in a hexagonal prism structure, so that an operator can operate the second transmission part 32 by using the universal actuating tool 5, and the locking device 100 has a high versatility.

Further, the actuating means 5 may comprise: the actuating sleeve 51 and the matching part 52, the actuating sleeve 51 is configured in a cylindrical shape, a cavity matched with the tool matching section 322 in the shape of a polygonal prism of the second transmission part 32 is arranged in the actuating sleeve 51, so that the actuating tool 5 can drive the second transmission part 32 to rotate by means of matching of the actuating sleeve 51 and the tool matching section 322, the polygonal prism is designed to enable the tool matching section 322 to rotate synchronously with the actuating tool 5 and prevent the second transmission part 32 from rotating relative to the actuating tool 5, and the matching part 52 is suitable for matching with an external fastening tool such as a pneumatic wrench and the like.

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, a 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 upper end surface of the actuating tool 5, namely, after the driving inclined plane 6111 is subjected to 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 rotation 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.

Therefore, when the actuating tool 5 is sleeved on the tool matching section 22, the upper end face of the actuating sleeve 51 can be used for pushing the self-locking block 31 away, so that the self-locking block 31 is far away from the second transmission part 32 along the axis of the self-locking block shaft 33 (namely, the self-locking block moving axis), unlocking of the second transmission part 32 is realized, the second transmission part 32 is rotated and the power battery is fastened, after the unlocking, the actuating tool 5 is taken down, the self-locking block 31 can return to the state of being in contact with the second transmission part 32 along the self-locking block shaft 33 under the action of the elastic restoring force of the restoring spring, the second transmission part 32 is locked, and the power battery is safely locked.

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 clamp 24 is disposed below the fixed holding mechanism clamp 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 power battery. 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.

Further, according to an embodiment of the present invention, as shown in fig. 1 to 3, the 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 second holds the chamber 126, first chamber 111 and the second of holding holds chamber 126 and corresponds and constitute the transmission unit and hold the chamber, 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, can prevent from 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 power battery's installation accuracy.

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 first frame body 11 and the second frame body 12 are fixed, as shown in fig. 2 and fig. 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, 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 whole locking device 100 has a compact structure.

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 actuating tool 5, and then the first transmission portion 31 and the fixing structure 2 are driven to rotate, and finally the power battery 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 device 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 may be formed on the second connecting wall 123, the second transmission portion 32 may be fitted in the adjusting hole after extending from the second supporting hole 1241, and the lower end of the second transmission portion 32 extends from the adjusting hole, so that an operator can adjust the second transmission portion 32 by using the actuating tool 5, thereby driving the first transmission portion 31 and the fixing structure 2 to rotate, and finally clamping the power battery.

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 power battery 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 device 100:

referring to fig. 3 and 4, with the actuating tool 5 moving upward, the drive ramp 6111 is forced upward to rotate the self-locking block 61 about the self-locking block rotational axis 613, at which 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 actuating 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 device 100 of the present invention, the self-locking assembly 6 is added, and the self-locking assembly 6 is used to lock and unlock the second transmission portion 32, so that a dual self-locking function is achieved, so that after the power battery is clamped by the fixing and holding mechanism clamping block 1121 and the supporting and clamping portion 24 during the power battery 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 automobile operation process, and improving the locking reliability and the battery replacement safety of the locking device 100.

The invention also provides a method for installing and/or detaching a second component, which uses the system for locking or unlocking the second component under the first component to fix the second component under the first component, thereby having the advantages of simple installation mode, convenience, quickness and the like.

The system for locking or unlocking a second member under a first member of the present invention may further comprise: one of the fixed holding mechanism, the fixed holding mechanism and the locking device 100 is suitable for being arranged on the battery pack, and the other one of the fixed holding mechanism, the fixed holding mechanism and the locking device 100 is suitable for being arranged on the chassis of the vehicle body, so that the installation positions of the fixed holding mechanism and the locking device 100 are flexible, and the universality and the flexibility of the quick-change mechanism of the battery pack are improved.

For example, in an embodiment as shown in fig. 7, the fixing and holding mechanism (e.g., the first group of fixing and holding mechanism 1a and the second group of fixing and holding mechanism 1b) is provided on the second member (power battery), and the locking device 100 is provided on the first member (vehicle chassis), so that when the power battery is replaced, the fixing and holding mechanism on the battery pack is clamped and clamped by the locking device 100 on the vehicle body, thereby completing the loading and unloading of the power battery.

Specifically, as shown in fig. 7, the first group of fixing and holding mechanisms 1a includes two rows of fixing and holding mechanisms, the two rows of fixing and holding mechanisms are respectively distributed at intervals on two longitudinal side edges 101 of the housing 10, and the number of each row of fixing and holding mechanisms is three, a notch is provided at an intersection angle of the longitudinal side edge 101 of the housing 10 and one transverse side edge 102 of the housing 10, the second group of fixing and holding mechanisms 1b can be two, and the two fixing and holding mechanisms are respectively located at the two notches, so that the space on the battery pack housing 10 can be fully utilized, the arrangement of the fixing and holding mechanisms on the battery pack housing 10 is reasonable, the layout is compact, and the plurality of fixing and holding mechanisms can be used for ensuring that the battery pack can be clamped stably in the replacement process.

As can be seen from the relationship between the first set of fixing and holding mechanisms 1a and the locking device 100 shown in fig. 7, the fixing and holding mechanism (e.g., the first set of fixing and holding mechanisms 1a) extends into the fixing and holding mechanism fitting space 4, and the supporting clamping portion 22 extends into the limiting hole, so that the limiting hole can be used to limit the supporting clamping portion 22, so that the supporting clamping portion 22 does not move during the process of clamping the fixing and holding mechanism (e.g., the first set of fixing and holding mechanisms 1a), thereby achieving stable clamping and fast replacement of the power battery.

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 system for locking or unlocking a second member below a first member, characterized in that it comprises a plurality of locking devices (100), a plurality of said locking devices (100) being used to fix said second member below said first member, said locking devices (100) being fixed to said first member and/or said second member, and each of said locking devices (100) comprising: a fixed structure (2) and a transmission unit (3), wherein the transmission unit (3) is used for driving the fixed structure (2) to rotate so as to enable the fixed structure (2) to move to a position suitable for fixing the second component below the first component or leave the position;

the system further comprises: the self-locking assembly (6), the self-locking assembly (6) is used for locking and unlocking the transmission unit (3).

2. System for locking or unlocking a second member below a first member according to claim 1, characterized in that said transmission unit (3) comprises: 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.

3. System for locking or unlocking a second member below a first member according to claim 2, characterized in that said self-locking assembly (6) is configured to approach or move away from said second transmission portion (32) from the side of said second transmission portion (32), so as to lock and unlock said second transmission portion (32).

4. System for locking or unlocking a second member below a first member according to claim 3, characterized in that said self-locking assembly (6) has a self-locking block rotation axis (613), said self-locking assembly (6) being configured to approach or move away from said second transmission (32) in an oscillating manner about said self-locking block rotation axis (613).

5. System for locking or unlocking a second member below a first member according to claim 4, characterized in that said self-locking block rotation axis (613) is spaced parallel to said second transmission (32).

6. System for locking or unlocking a second member below a first member according to claim 4, characterized in that said 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 (61) being stopped against the second transmission part (32) by friction to lock the second transmission part (32).

7. System for locking or unlocking a second member below a first member according to claim 1, characterized in that it further comprises actuating means (5) separable from said first and second members, said actuating means (5) being arranged at least for driving said transmission unit (3) so that said transmission unit (3) can bring said fixing structure (2) into or out of a position suitable for fixing said second member below said first member.

8. System for locking or unlocking a second member below a first member according to claim 7, characterized in that said actuation means (5) comprise: the sleeve is actuated.

9. System for locking or unlocking a second member below a first member according to claim 6, characterized in that said self-locking assembly (6) further comprises: a return spring connected to the self-locking block (61).

10. System for locking or unlocking a second member below a first member according to claim 9, characterized in that it further comprises an actuating tool (5) separable from said first and second members, said self-locking block (61) having a driving bevel (6111), said driving bevel (6111) being adapted to cooperate with an upper end face of said actuating tool (5) so as to enable said self-locking block (61) to oscillate about said self-locking block rotation axis (613).

11. The system for locking or unlocking a second member below a first member according to claim 10, wherein the self-locking block (61) comprises a self-locking block body (611) and a mounting portion (612), a self-locking block shaft through hole (6121) is provided on the mounting portion (612), the driving inclined surface (6111) is provided at the boundary of the front side surface and the bottom surface of the self-locking block body (611), and the distance between the driving inclined surface (6111) and the second transmission portion (32) increases from top to bottom.

12. The system for locking or unlocking a second member below a first member as claimed in claim 11, wherein a torsion spring mounting position is further provided on said self-locking block body (611), one end of said return spring is connected to said torsion spring mounting position, and the other end of said return spring is connected to the frame (1).

13. System for locking or unlocking a second member below a first member according to claim 12, characterized in that said frame (1) comprises: the frame comprises a first frame body (11) and a second frame body (12), wherein a first accommodating cavity (111) and a second accommodating cavity (126) are respectively formed in the first frame body (11) and the second frame body (12), the first accommodating cavity (111) corresponds to the second accommodating cavity (126) and forms a transmission unit accommodating cavity, a fixing and retaining mechanism clamping block (1121) is further arranged on the first frame body (11), a supporting and clamping portion (24) is arranged on the fixing structure (2), the supporting and clamping portion (24) extends out of the front of the transmission unit accommodating cavity, and the fixing and retaining mechanism clamping block (1121) is suitable for being aligned to the supporting and clamping portion (24) and forming a fixing and retaining mechanism matching space (4) between the fixing and retaining mechanism clamping portion (24).

14. A system for locking or unlocking a second member below a first member as recited in claim 2, wherein the first transmission is a worm gear and the second transmission is a worm.

15. A system for locking or unlocking a second member below a first member according to claim 2 wherein the first transmission and the second transmission cooperate in a one-way self-locking manner.

Images