CN210524937U - Sleeve assembly and locking and unlocking device with same - Google Patents

Abstract

The utility model belongs to the locking and unlocking field specifically provides a sleeve subassembly and have this sleeve subassembly add unlocking device. The utility model discloses a when aiming at solving the power battery of installation electric automobile, current sleeve subassembly can not realize the problem of the automatic clearance regulatory function in the small scale, the utility model discloses a sleeve subassembly includes sleeve unit, the coupling unit and twists reverse the unit, and the sleeve unit top has fastening structure, and the bottom has first connection structure, can be connected with the second connection structure at coupling unit top, and the third connection structure of coupling unit bottom can be connected with the fourth connection structure at twisting reverse the unit top, and the fifth connection structure of twisting reverse the unit bottom can be connected with actuating mechanism, and the coupling unit can be followed sleeve subassembly radially for sleeve unit and twist reverse the unit swing. Because the connecting unit can swing, the sleeve unit and the torsion unit can be staggered, and the automatic gap adjusting function in a small range is further realized.

Description

Sleeve assembly and locking and unlocking device with same

Technical Field

The utility model belongs to the technical field of the locking and unlocking, specifically provide a sleeve subassembly and have this sleeve subassembly add unlocking device.

Background

In the daily processing production or maintenance process, the screws/bolts are inevitably used for fastening objects, and generally, if a large amount of screws/bolts are required to be screwed or loosened every day, the screws/bolts are generally fastened or loosened by means of an automatic locking and unlocking device, especially when a power battery on an electric automobile is locked or unlocked, multiple groups of screws/bolts are locked or unlocked at one time, and the dependence on automatic locking and unlocking is high. Generally, different types of sleeve assemblies can be sleeved on the output shaft of the automatic locking and unlocking device so as to simultaneously loosen or tighten fasteners such as screws/bolts and the like of different types, thereby improving the efficiency.

However, when the automatic locking and unlocking device works, due to the influence of manufacturing precision and positioning precision, the sleeve assembly cannot be aligned with the screw/bolt to be fastened accurately, the sleeve assembly cannot be matched with the screw easily, even if the gap is small, the sleeve assembly and the output shaft are rigidly connected and cannot be adjusted in a floating mode in a small range, the sleeve assembly is abraded slowly, or the output shaft is broken. The output shaft is usually part of a power element, most of which are standard parts, and the modification of which is extremely difficult to realize, such as a motor and the like.

Accordingly, there is a need in the art for a new sleeve assembly to solve the problem that the existing sleeve assembly cannot achieve an automatic gap adjustment function in a small range when a power battery of an electric vehicle is installed.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned problem among the prior art, promptly for solving when installing electric automobile's power battery, the problem of the problem that current sleeve subassembly can not realize the automatic clearance regulatory function in the small scale, the utility model provides a sleeve subassembly, sleeve subassembly includes:

the top of the sleeve unit is provided with a fastening structure, and the bottom of the sleeve unit is provided with a first connecting structure, and the fastening structure can be matched and connected with a fastening piece;

the top of the connecting unit is provided with a second connecting structure, the bottom of the connecting unit is provided with a third connecting structure, and the second connecting structure can be connected with the first connecting structure;

the top of the torsion unit is provided with a fourth connecting structure, the bottom of the torsion unit is provided with a fifth connecting structure, the fourth connecting structure can be connected with the third connecting structure, and the fifth connecting structure can be connected with a driving mechanism;

wherein the connection unit is provided to be swingable relative to the sleeve unit and the torsion unit in a radial direction of the sleeve assembly, and the sleeve assembly is provided to be capable of receiving the power of the drive mechanism through the torsion unit and transmitting the power to the sleeve unit through the connection unit.

In a preferred embodiment of the sleeve assembly, the first connecting structure is a first square hole, the second connecting structure is a first square column, and a side length of a cross section of the first square hole is greater than a side length of a cross section of the first square column.

In a preferred embodiment of the above sleeve assembly, the top of the first square column further has a spherical protrusion, and correspondingly, the bottom end of the first square hole has a spherical groove corresponding to the spherical protrusion.

In a preferred embodiment of the sleeve assembly, the first square column is further provided with a limiting hole, correspondingly, the sleeve unit is provided with a first through hole corresponding to the first square hole, the first through hole allows a first limiting member to pass through and be inserted into the limiting hole, and a cross-sectional area of a portion of the first limiting member inserted into the limiting hole is smaller than a cross-sectional area of the limiting hole.

In a preferred embodiment of the sleeve assembly, the third connecting structure is a second square column, the fourth connecting structure is a second square hole, and a side length of a cross section of the second square hole is greater than a side length of a cross section of the second square column.

In a preferred technical solution of the above sleeve assembly, a limiting groove is further disposed on the second square column along an axial direction of the sleeve assembly, and correspondingly, a second through hole is disposed on the torsion unit corresponding to the limiting groove, and the second through hole allows a second limiting member to pass through and be inserted into the limiting groove.

In a preferred embodiment of the above sleeve assembly, the sleeve assembly further includes a first elastic member, and correspondingly, the outer side surface of the bottom of the sleeve unit further has a first limit stop, and the outer side surface of the top of the torsion unit further has a second limit stop, and two ends of the first elastic member are respectively connected to the first limit stop and the second limit stop.

In a preferred embodiment of the above sleeve assembly, the sleeve assembly further comprises a second elastic member, the fastening structure is a stepped hole, a first step of the stepped hole is a notch matching with the fastening member, a second step of the stepped hole is a cylindrical hole, one end of the second elastic member is connected with the bottom of the cylindrical hole, and the other end faces the notch, and/or,

the fifth connecting structure is a round hole with a key groove.

The utility model also provides a sleeve subassembly that is used for power battery to add unblock, sleeve subassembly is any one of above-mentioned technical scheme sleeve subassembly.

The utility model also provides a locking and unlocking device, locking and unlocking device include any one of above-mentioned technical scheme sleeve subassembly.

The technical scheme of the utility model can understand, in the utility model discloses an in the technical scheme, the sleeve subassembly includes the sleeve unit, linkage unit and torsion unit, the sleeve unit top has fastening structure, fastening structure can be connected with the fastener cooperation, the bottom has first connection structure, it can be connected with the second connection structure at linkage unit top, the third connection structure of linkage unit bottom can be connected with the fourth connection structure at torsion unit top, the fifth connection structure of torsion unit bottom can be connected with actuating mechanism, linkage unit can be along the radial relative sleeve unit of sleeve subassembly and torsion unit swing, the sleeve subassembly can receive actuating mechanism's power through torsion unit, and transmit power to the sleeve unit through the linkage unit, final action is on the fastener.

In this way, the utility model discloses a sleeve unit and torsion unit homoenergetic are along sleeve subassembly's radial for the linkage unit swing, thereby make sleeve subassembly can realize the dislocation adjustment of small range, when adding the unblock through sleeve subassembly, if sleeve subassembly and screw are not adjusted well, sleeve subassembly will pass through linkage unit for sleeve unit and torsion unit's swing, make sleeve unit can smooth and the screw combination, and can not cause sleeve subassembly's wearing and tearing or the fracture of output shaft because of little dislocation, thereby when having solved the power battery of installation electric automobile, current sleeve subassembly can not realize the problem of the automatic clearance regulatory function of small range.

Drawings

The sleeve assembly and the locking and unlocking device having the same according to the present invention will be described with reference to the accompanying drawings. In the drawings:

FIG. 1 is a cross-sectional view of a first embodiment of a sleeve assembly of the present invention;

FIG. 2 is an exploded view of a first embodiment of the sleeve assembly of the present invention;

fig. 3 is a schematic structural view of a second elastic member in a first embodiment of the sleeve assembly of the present invention;

fig. 4 is an exploded view of the locking and unlocking device of the present invention;

FIG. 5 is a schematic structural view of a second embodiment of the sleeve assembly of the present invention;

FIG. 6 is a cross-sectional view of a second embodiment of the sleeve assembly of the present invention;

fig. 7 is an exploded view of a second embodiment of the sleeve assembly of the present invention;

fig. 8 is a schematic structural view of a third embodiment of the sleeve assembly of the present invention;

fig. 9 is a cross-sectional view of a third embodiment of the sleeve assembly of the present invention;

fig. 10 is an exploded view of a third embodiment of the sleeve assembly of the present invention.

List of reference numerals:

1. a sleeve assembly; 11. a sleeve unit; 111. a fastening structure; 1111. a notch; 1112. a cylindrical bore; 112. a first connecting structure; 1121. a spherical groove; 1122. a first via hole; 113. a first limit table; 12. a connection unit; 121. a second connecting structure; 1211. a spherical bulge; 1212. a limiting hole; 122. a third connecting structure; 1221. a limiting groove; 123. a universal connection member; 124. a slide bar; 125. a sixth connecting structure; 13. a torsion unit; 131. a fourth connecting structure; 1311. a second via hole; 132. a fifth connecting structure; 133. a second limit table; 134. a seventh connecting structure; 14. a first limit piece; 15. a second limiting member; 16. a first elastic member; 17. a second elastic member; 2. a drive mechanism.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications. For example, although the first connection structure is described as the first square hole and the second connection structure is described as the first square column, the first connection structure and the second connection structure of the present invention may be other structures, such as the connection between the pentagonal hole and the pentagonal column, or the square column is disposed opposite to the square hole, that is, the first connection structure is the first square column and the second connection structure is the first square hole, as long as the sleeve unit and the connection unit can be connected, and the connection unit can drive the sleeve unit to rotate and swing relative to the sleeve unit along the radial direction of the sleeve assembly.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate directions or positional relationships based on those shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

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

Example one

Referring first to fig. 1, 2 and 4, a first embodiment of the sleeve assembly of the present invention will be described. Wherein, fig. 1 is the cross-sectional view of the first embodiment of the sleeve component of the present invention, fig. 2 is the exploded view of the first embodiment of the sleeve component of the present invention, and fig. 4 is the exploded view of the locking and unlocking device of the present invention.

As shown in fig. 1, 2 and 4, in order to solve the problem that the conventional sleeve assembly cannot achieve the automatic gap adjustment function in a small range, the sleeve assembly 1 of the present invention includes a sleeve unit 11, a connecting unit 12 and a torsion unit 13. The bottom of the sleeve assembly 1 and the top of the connection unit 12 are connected by the first connection structure 112 and the second connection structure 121, and the bottom of the connection unit 12 and the top of the torsion unit 13 are connected by the third connection structure 122 and the fourth connection structure 131. The feature that the connecting unit 12 can pivot in the radial direction of the sleeve assembly 1 relative to the sleeve unit 11 and the torsion unit 13, i.e. the connecting unit 12 is movably connected to both the sleeve unit 11 and the torsion unit 13, allows the sleeve assembly 1 to float in a misaligned manner. The sleeve unit 11 has a fastening structure 111 at the top for engaging with a fastener, and the torsion unit 13 has a fifth connecting structure 132 at the bottom for connecting with the driving mechanism 2. After connection, the driving structure transmits torsional acting force to the torsion unit 13, and the torsion unit 13 transmits the acting force to the sleeve unit 11 through the connecting unit 12, so that the fastening piece is locked and unlocked.

In many situations, for example, screws on a power battery at the bottom of an electric automobile are screwed or unscrewed, since the power battery is horizontal, and the locking and unlocking platform is also horizontal, the screws for fixing the power battery are vertically assembled, and an output shaft of a driving mechanism 2 for driving a sleeve to rotate on the locking and unlocking platform is also vertical, both the sizes are relatively large, and the inclination is not easy to occur.

At this time, if the vertical screw and the vertical output shaft are dislocated, the sleeve unit 11 is connected with the screw, the torsion unit 13 is connected with the output shaft, and both the screw and the output shaft are in a vertical state and cannot be changed, so that the central lines of the sleeve unit 11 and the torsion unit 13 are also required to be vertical, two movable connecting points are needed at this time, one of the movable connecting points deflects towards the dislocated direction, and the other of the movable connecting points deflects the angle, for example, the central lines of the sleeve unit 11 and the torsion unit 13 in fig. 1 are kept parallel, so that the dislocation is solved, and the central lines of the sleeve unit 11 and the torsion unit. If there is only one movable connection unit 12, as long as the connection unit 12 swings, the center lines of the two will inevitably change from a superposition state to a certain included angle, and at this time, an acting force along the radial direction of the two will act on the screw and the output shaft at the same time, and the larger the dislocation is, the larger the deviation angle is, the larger the acting force is, and further, one or more of the screw, the output shaft or the sleeve component 1 will break. Thus, the provision of two movable connection points not only allows the same situation to be solved as with a single movable connection point, but also effectively applies to the case where the sleeve unit 11 and the torsion unit 13 must be axially parallel.

The sleeve assembly 1 of the present invention is described in detail below with further reference to fig. 1 and 2.

As shown in fig. 1 and 2, in one possible embodiment, the first connecting structure 112 is a first square hole, the second connecting structure 121 is a first square column, the third connecting structure 122 is a second square column, the fourth connecting structure 131 is a second square hole, and the fifth connecting structure 132 of the torsion unit 13 is a round hole with a key slot (not shown). The side length of first square hole cross section is greater than the side length of first square column cross section, and the side length of second square hole cross section is greater than the side length of second square column cross section for in first square column inserted first square hole, and the second square column inserted in the second square hole, under the prerequisite that can accomplish power transmission, relative swing is accomplished in certain space in addition, makes sleeve component 1 can realize the automatic clearance adjustment of minim.

Still be provided with spacing hole 1212 on first square column, sleeve unit 11 is provided with first via hole 1122 in the position that spacing hole 1212 corresponds, first locating part 14 passes through the via hole and inserts in spacing hole 1212, and the cross-sectional area of the part that first locating part 14 inserted spacing hole 1212 is less than the cross-sectional area of spacing hole 1212, first locating part 14 also is provided with a section distance with the hole bottom of spacing hole 1212, thereby guaranteed that first locating part 14 inserts the back in spacing hole 1212, first square column can also realize rocking of each direction of minim, still make sleeve unit 11 and coupling unit 12 be difficult to break away from. The first through hole 1122 is preferably a threaded hole, the first limiting member 14 is preferably a screw, although the first through hole 1122 may also be a pin hole, and correspondingly, the first limiting member 14 is a pin, so long as a similar limiting function can be achieved. A spherical protrusion 1211 is further disposed on the top of the first square pillar, and correspondingly a spherical groove 1121 is disposed on the bottom of the first square hole, and the spherical protrusion 1211 abuts against the spherical groove 1121, so that the sleeve unit 11 and the connection unit 12 can be swung smoothly. A limiting groove 1221 is further formed in the second square column along the axial direction of the sleeve assembly 1, a second through hole 1311 is correspondingly formed in the torsion unit 13, the second limiting piece 15 penetrates through the second through hole 1311 and is inserted into the limiting groove 1221, and a certain space is reserved between the second limiting piece 15 and the groove bottom of the limiting groove 1221, so that the connecting unit 12 can shake in a small range in each direction relative to the torsion unit 13, can slide relative to the torsion unit 13 along the direction of the limiting groove 1221, and further enables the connecting unit 12 and the torsion unit 13 not to be easily separated. Similarly, the second through hole 1311 is preferably a threaded hole, and the second limiting member 15 is preferably a screw, but the second through hole 1311 may also be a pin control, and the like, and accordingly the second limiting member 15 is a pin, and the like, as long as a similar limiting function can be achieved.

The sleeve assembly 1 of the present invention is described in detail below with further reference to fig. 1-4. Fig. 3 is a schematic structural view of the second elastic member in the first embodiment of the sleeve assembly according to the present invention.

As shown in fig. 1 to 4, in a possible embodiment, the bottom outer side surface of the sleeve unit 11 further has a first limit stop 113, the top outer side surface of the torsion unit 13 further has a second limit stop 133, the sleeve assembly 1 further includes a first elastic member 16, two ends of the first elastic member 16 respectively abut against the first limit stop 113 and the second limit stop 133, the first elastic member 16 is preferably a spring, and may be a plate spring or the like, an elastic sleeve or the like, as long as a mutual reverse acting force can be achieved between the sleeve unit 11 and the torsion unit 13, so that the sleeve assembly 1 is kept vertical in an unstressed state. As shown in fig. 3, the fastening structure 111 is a stepped hole, a first step of the stepped hole is a notch 1111 matched with the fastener, a second step of the stepped hole is a cylindrical hole 1112, and the sleeve assembly 1 further includes a second elastic member 17, one end of the second elastic member 17 is connected with the bottom of the cylindrical hole 1112, and the other end faces the notch 1111.

The setting mode has the advantages that: the addition of the first elastic member 16 enables the sleeve unit 11 and the torsion unit 13 to be used normally as a conventional sleeve in a state where no gap adjustment is required. In addition, spacing groove 1221 and first elastic component 16's integrated design still makes sleeve subassembly 1 can have better length flexible, if do not have this design, sleeve subassembly 1 can accomplish the skew on radial clearance, but correspondingly its axial length can not realize good elasticity, the utility model discloses when making sleeve subassembly 1 can adapt to radial clearance simultaneously, can also have very strong axial clearance's adaptability. The addition of the second elastic member 17 allows the sleeve unit 11 to be easily separated from the fastener after the locking and unlocking operations are completed. The fifth connecting structure 132 is a round hole with a key slot, and can be matched with most motors, as shown in fig. 4, so that the applicability is wider.

Example two

A second embodiment of the present invention is described below with reference to fig. 5 to 7, wherein fig. 5 is a schematic structural view of a second embodiment of the sleeve assembly of the present invention, fig. 6 is a cross-sectional view of the second embodiment of the sleeve assembly of the present invention, and fig. 7 is an exploded view of the second embodiment of the sleeve assembly of the present invention.

As shown in fig. 5 to 7, on the premise that another arrangement mode of the embodiment is not changed, the connection unit 12 includes a universal connection member 123 and a sliding rod 124, the universal connection member 123 is a bidirectional ball cage universal joint, wherein the bidirectional ball cage universal joint is a structure in which angular edges are arranged on a ball cage, as shown in fig. 7, so that the bidirectional ball cage universal joint can transmit torque. At this time, the first connecting structure 112 is a first ball cage groove, the second connecting structure 121 is a first ball cage located above, the third connecting structure 122 and the fourth connecting structure 131 are not changed, and the difference lies in that the second square column of the third connecting structure 122 and the second square hole of the fourth connecting structure 131 can be just matched, because the sixth connecting structure 125 is a second ball cage located below, the seventh connecting structure 134 is a second ball cage groove, the universal connecting piece 123 of the connecting unit 12 can drive the sliding rod 124 to swing at this time, and then indirectly drive the torsion unit 13 to swing relative to the connecting unit 12, so that the gap between the second square column and the second square hole is not needed any more.

The connection manner of the first ball cage groove and the first ball cage is the same as the principle in the first embodiment, that is, the first limiting member 14 is inserted into the limiting hole 1212 after passing through the first through hole 1122, and the diameter of the limiting hole 1212 is larger than that of the first limiting member 14, except that the same structure is added to the positions of the sixth connecting member structure 125 and the seventh connecting structure 134 in the second embodiment.

Set to universal joint spare 123 and the mode of slide bar 124 through the linkage unit 12, at first it has can realize that the minizone floats, when accomplishing automatic clearance adjustment, its deflectable angle is bigger, thereby it is bigger to resist eccentric scope, and universal joint spare 123 is the standard part usually, its purchase is easy, the assembly is simple, whole product manufacturing cost has been reduced, the structure is also compacter, loose easy rocking can not appear, and then the condition of various noises appears, more be applicable to the widget of this kind of sleeve class.

EXAMPLE III

A third embodiment of the present invention is described below with reference to fig. 8 to 10, wherein fig. 8 is a schematic structural view of the third embodiment of the sleeve assembly of the present invention, fig. 9 is a cross-sectional view of the third embodiment of the sleeve assembly of the present invention, and fig. 10 is an exploded view of the third embodiment of the sleeve assembly of the present invention.

As shown in fig. 8 to 10, the embodiment is the same as the second embodiment in principle, and the difference is only that the universal joint 123 is replaced by a two-way cross universal joint, referring to fig. 10, the two-way cross universal joint further includes an H-shaped bracket, a first cross connecting shaft and a second cross connecting shaft, the H-shaped bracket has a mounting hole, and two opposite shafts (two shafts collinear with respect to the axis of the fingers) of the first cross connecting shaft and two opposite shafts of the second cross connecting shaft are respectively pivotally connected with the H-shaped bracket. Accordingly, the first connecting structure 112 and the seventh connecting structure 134 are adapted, for example, the first connecting structure 112 and the seventh connecting structure 134 are replaced by a U-shaped groove with a mounting hole from a hemispherical groove, and the U-shaped groove is a first U-shaped groove and a second U-shaped groove, respectively, the first U-shaped groove is pivotally connected with the other two opposite shafts of the first cross connecting shaft, and the second U-shaped groove is pivotally connected with the other two opposite shafts of the second cross connecting shaft. After the connection, the operation principle is similar to that of the second embodiment, and the description is omitted here.

In summary, by the design of the movable connection of the connection structure, the connection unit 12 can swing relative to the sleeve unit 11 and the torsion unit 13 along the radial direction of the sleeve assembly 1, so that the sleeve assembly 1 can realize a small-range automatic gap adjustment function. Through the design of first elastic component 16, second square column, second square hole, second via 1311, second locating part 15 and spacing groove 1221, make sleeve subassembly 1 can have along its axial great flexible function to make sleeve subassembly 1 can not only adjust along its radial little clearance, can also adjust along its axial clearance, more be applicable to practical application. The second resilient member 17 is designed to facilitate the separation of the sleeve unit 11 and the fastener.

It should be noted that the above-mentioned embodiments are only used for illustrating the principle of the present invention, and are not intended to limit the protection scope of the present invention, and those skilled in the art can adjust the above-mentioned structure without deviating from the principle of the present invention, so that the present invention can be applied to more specific application scenarios.

For example, in an alternative embodiment, the first connection structure 112, the second connection structure 121, the third connection structure 122 and the fourth connection structure 131 are not constant, and the structures of the square hole and the square column are interchangeable, for example, the first connection structure 112 may be a first square column, the second connection structure 121 is a first square hole, and the third connection structure 122 is a second square hole, and the fourth connection structure 131 is a second square column. The connection structure does not have to have a square cross section, and may have a triangular, other polygonal, or quincunx shape, as long as power can be transmitted. The connection structure is not limited to the connection of the column and the hole, and can also be a universal connection, such as a universal coupling connection. The connection mode is various, and here can not be exhausted, has only listed the connection of a square column and square hole in the description, and the skilled person in the art is very easy to be out of shape to it, nevertheless as long as has satisfied "connecting element 12 can follow sleeve subassembly 1 radially for sleeve unit 11 and twist reverse the connection condition of unit 13 swing" neither deviate the utility model discloses a principle, consequently all will fall into the utility model discloses an within the protection scope.

For example, in another alternative embodiment, the limiting hole 1212 and the limiting groove 1221 are not invariable, the limiting hole 1212 may be replaced by the limiting groove 1221, and correspondingly the limiting groove 1221 may be replaced by the limiting hole 1212, or a limiting concave structure of other shapes, as long as the connection can swing and not easily fall off, which do not deviate from the principle of the present invention, and thus all fall within the protection scope of the present invention.

For example, in another alternative embodiment, the spring may also be welded with the first and second limiting platforms 113 and 133, or the spring may be welded directly on the outer side of the sleeve unit 11 and the connecting unit 12, and the connecting mode is not only the abutting mode mentioned in the specification, and the spring may also replace the function of the limiting hole 1212 and the limiting groove 1221 by welding, and also the sleeve unit 11 and the torsion unit 13 may not be easily separated, which do not depart from the principle of the present invention, and thus all fall into the protection scope of the present invention.

For example, in another alternative embodiment, the fastening structure 111 is not necessarily a stepped hole, the fastening structure 111 may also have only one notch 1111, and the second elastic member 17 is directly connected to the bottom of the notch 1111 at one end and towards the notch 1111 at the other end, without departing from the principles of the present invention, and thus all fall within the protection scope of the present invention. Likewise, the second elastic member 17 may be a spring, a plate spring, an elastic sleeve, etc., and may also be a combined structure composed of a spring and a support plate, etc., as shown in fig. 3, as long as it is possible to separate the screw and sleeve assembly 1 after the locked and unlocked states are completed.

For example, in another alternative embodiment, the fifth connecting structure 132 is not fixed, but may be a circular hole of a spline, or a flange structure, etc., as long as it can be connected with the driving mechanism 2 through the fifth connecting structure 132 and can transmit the power of the driving mechanism 2, without departing from the principle of the present invention, and therefore all will fall within the protection scope of the present invention.

For example, in another alternative embodiment, the universal joint 123 may be formed by only retaining any one end of the universal joint, and accordingly, the second square hole and the second square pillar may be retained with a gap, and the combination and replacement of the similar structures do not depart from the principles of the present invention, and thus all will fall within the protection scope of the present invention.

For example, in another alternative embodiment, the universal joint 123 is not limited to a ball cage universal joint and a two-way cross universal joint, but may be other types of one-way or two-way universal joints without departing from the principles of the present invention, and thus all fall within the scope of the present invention.

For example, in another alternative embodiment, the universal joint 123 may be directly connected to the torsion unit 13 instead of being indirectly connected to the torsion unit 13 through the sliding rod 124, and also may be directly connected to the torsion unit 13, which may also achieve the adjustment of the small gap, without departing from the principle of the present invention, and therefore all of them will fall within the protection scope of the present invention.

Furthermore, the utility model also provides a sleeve subassembly that is arranged in power battery locking and unlocking, this sleeve subassembly be in above-mentioned arbitrary embodiment sleeve subassembly.

In addition, as shown in fig. 4, the present invention further provides a locking and unlocking device, which has a driving mechanism 2 and the sleeve assembly 1 described in any of the above embodiments.

So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims (9)

1. A sleeve assembly, comprising:

the top of the sleeve unit is provided with a fastening structure, and the bottom of the sleeve unit is provided with a first connecting structure, and the fastening structure can be matched and connected with a fastening piece;

the top of the connecting unit is provided with a second connecting structure, the bottom of the connecting unit is provided with a third connecting structure, and the second connecting structure can be connected with the first connecting structure;

the top of the torsion unit is provided with a fourth connecting structure, the bottom of the torsion unit is provided with a fifth connecting structure, the fourth connecting structure can be connected with the third connecting structure, and the fifth connecting structure can be connected with a driving mechanism;

wherein the connection unit is provided to be swingable relative to the sleeve unit and the torsion unit in a radial direction of the sleeve assembly, and the sleeve assembly is provided to be capable of receiving the power of the drive mechanism through the torsion unit and transmitting the power to the sleeve unit through the connection unit.

2. The sleeve assembly of claim 1 wherein said first connection structure is a first square hole and said second connection structure is a first square post, said first square hole having a cross-sectional side length greater than a cross-sectional side length of said first square post.

3. The socket assembly of claim 2, wherein the top of the first square post further has a ball-shaped protrusion, and the bottom end of the first square hole has a ball-shaped groove corresponding to the ball-shaped protrusion.

4. The socket assembly as claimed in claim 2, wherein the first square pillar is further provided with a limiting hole, a first through hole is correspondingly provided on the socket unit corresponding to the first square hole, the first through hole allows a first limiting member to pass through and be inserted into the limiting hole, and the cross-sectional area of the portion of the socket unit where the first limiting member is inserted into the limiting hole is smaller than that of the limiting hole.

5. The sleeve assembly of claim 1 wherein said third connection structure is a second square post and said fourth connection structure is a second square hole having a cross-sectional side length greater than a cross-sectional side length of said second square post.

6. The sleeve assembly according to claim 5, wherein a limiting groove is further disposed on the second square column along the axial direction of the sleeve assembly, and correspondingly, a second through hole is disposed on the torsion unit corresponding to the limiting groove, and the second through hole allows a second limiting member to pass through and be inserted into the limiting groove.

7. The sleeve assembly of claim 1 further comprising a first elastic member, wherein the bottom outer side of the sleeve unit further comprises a first position-limiting platform, and the top outer side of the torsion unit further comprises a second position-limiting platform, and wherein two ends of the first elastic member are connected to the first position-limiting platform and the second position-limiting platform respectively.

8. The socket assembly of claim 1, further comprising a second resilient member, wherein the fastening structure is a stepped bore, wherein a first step of the stepped bore is a notch that mates with the fastener, wherein a second step of the stepped bore is a cylindrical bore, wherein one end of the second resilient member is connected to a bottom of the cylindrical bore and the other end faces the notch, and/or,

the fifth connecting structure is a round hole with a key groove.

9. A locking and unlocking device, characterized in that it comprises a drive mechanism and a sleeve assembly as claimed in any one of the preceding claims 1 to 8.

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