Locking device and electric automobile

Abstract

The utility model discloses a locking device and an electric automobile comprising the locking device. The locking device includes: a housing; the driving assembly is arranged in the shell; the lock rod extends out of the shell from the front end wall of the shell under the driving of the driving assembly; the first terminal is provided with a first front end, a first rear end and a first main body which extends between the first front end and the first rear end and is fixed on the side wall of the shell; the first pairing terminal is provided with a first pairing end and a first connecting end; the second terminal is separated from the first terminal and is provided with a second front end, a second rear end and a second main body which extends between the second front end and the second rear end and is fixed on the side wall of the shell; the second pairing terminal is separated from the first pairing terminal and is provided with a second pairing end and a second connecting end; and the switch piece is driven by the driving assembly to move to a conduction position which is in contact with the first connecting end and the second connecting end at the same time when the locking function is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical electron field, more have related to a locking device and electric automobile. BACKGROUND

[0002] The locking device is usually used to lock the charging gun of the electric automobile. When the locking device locks the charging gun, the feedback signal is sent to the controller through the conduction of the feedback loop in the locking device to inform the controller that the charging gun has been locked. In the feedback loop, the micro switch is usually used to realize the conduction and disconnection of the feedback loop. However, the micro switch has a large volume, occupies a large internal space in the locking device, increases the design difficulty of the locking device, and has a limited service life, which leads to frequent replacement of the micro switch and increases the maintenance cost. In order to solve this problem, the industry proposes to use a printed circuit board (PCB) to replace the micro switch. However, the cost of the printed circuit board is high, and it is difficult to assemble in the locking device, which makes it difficult for the printed circuit board to meet the practical needs.

[0003] Therefore, it is necessary to provide a locking device comprising a switch structure that is easy to assemble, has low cost, simple structure and durable. SUMMARY

[0004] The embodiments of the utility model aim to solve at least one aspect of the above problems.

[0005] According to one aspect of the utility model, a locking device is provided, comprising: a housing having a front end wall, a rear end wall, and a side wall extending between the front end wall and the rear end wall; a drive assembly arranged in the housing; a locking rod configured to extend out of the housing from the front end wall under the drive of the drive assembly to realize a locking function; a first terminal having a first front end fixed near the front end wall, a first rear end fixed on the rear end wall, and a first main body extending between the first front end and the first rear end and fixed on the side wall; a first counterpart terminal having a first counterpart end connected to the first front end and a first connecting end extending towards the front end wall; a second terminal spaced apart from the first terminal, having a second front end fixed near the front end wall, a second rear end fixed on the rear end wall, and a second main body extending between the second front end and the second rear end and fixed on the side wall; a second counterpart terminal spaced apart from the first counterpart terminal, having a second counterpart end connected to the second front end and a second connecting end extending towards the front end wall; and a switch piece configured to move to a conduction position of simultaneously contacting the first connecting end and the second connecting end when realizing the locking function under the drive of the drive assembly.

[0006] According to one aspect of the present application, the first front end is provided with a first arm extending away from the side wall in a lateral direction from the first main body to abut onto the first mating end; and the second front end is provided with a second arm extending away from the side wall in a lateral direction from the second main body to abut onto the second mating end, the second arm being closer to the front end wall in the longitudinal direction than the first arm.

[0007] According to one aspect of the present application, the locking device further comprises: an insert removably mounted into the housing, the first mating end and the second mating end are respectively arranged in the insert and configured in a stepped shape, so that the first mating end and the second mating end are exposed on the top side of the insert, and the first connecting end and the second connecting end are exposed on the bottom side of the insert.

[0008] According to one aspect of the present application, the first mating end is configured to extend away from the side wall in a lateral direction, and the first connecting end is configured to extend towards the front end wall in a longitudinal direction; and the second mating end is configured to extend towards the side wall in a lateral direction, and the second connecting end is configured to extend towards the front end wall in a longitudinal direction.

[0009] According to one aspect of the present application, the first mating end and the second mating end are coplanar, the first connecting end and the second connecting end are coplanar, the length of the first connecting end in the longitudinal direction is greater than that of the second connecting end, the first connecting end is aligned with the second connecting end in the lateral direction, and the first connecting end is closer to the side wall in the lateral direction than the second connecting end.

[0010] According to one aspect of the present application, the insert is provided on its top side with: a first top groove for accommodating and exposing the first mating end; a second top groove spaced apart from the first top groove for accommodating and exposing the second mating end; and a third top groove spaced apart from the first top groove and the second top groove for removably mounting the insert into the housing; and the insert is further provided with two flanges respectively located on both sides of the insert in the longitudinal direction for removably mounting the insert into the housing.

[0011] According to one aspect of the present application, the housing further has a top wall, and the locking device is provided with: a first mounting portion, the top side of the first mounting portion is arranged on the top wall, the rear side of the first mounting portion is arranged on the front end wall, the lateral side of the first mounting portion is arranged on the side wall, and the first mounting portion is provided with a first mounting groove extending in a lateral direction and cooperating with one of the two flanges; a second mounting portion, the top side of the second mounting portion is arranged on the top wall, and the second mounting portion is provided with a second mounting groove extending in a lateral direction and cooperating with the other of the two flanges; and a mounting rib extending in a lateral direction from the side wall on the top wall and cooperating with the third top groove.

[0012] According to one aspect of the present application, the switch piece comprises: a switch body configured in a plate shape and having a front side facing the front end wall and a back side facing the back end wall; and first and second elastic arms respectively extending obliquely upward from the front side to the bottom side of the insert piece, such that the first and second elastic arms move against the bottom side when the switch piece moves; the switch piece is configured to contact the first elastic arm to the first connection end and the second elastic arm to the second connection end when moved to the on position.

[0013] According to one aspect of the present application, the drive assembly comprises: a motor provided with a rotatable threaded rod; a gear set engaged with and driven to rotate by the threaded rod; and a carrier comprising: a first carrier portion extending in a longitudinal direction and provided with engagement teeth engaged with the gear set to be driven to move; and a second carrier portion extending upward in a vertical direction from the first carrier portion, wherein the lock rod is fixed on a front surface of the second carrier portion facing the front end wall in the longitudinal direction, and the switch piece is fixed on a top end of the second carrier portion facing the bottom side of the insert piece, such that the front surface of the second carrier portion abuts against the front end wall when the switch piece moves to the on position.

[0014] According to one aspect of the present application, the top end of the second carrier portion is provided with: an end surface; first, second and third limiting walls surrounding the end surface in a "U" shape in a circumferential direction, the first and second limiting walls opposite to each other, and the third limiting wall connected between the first and second limiting walls; a first clamping portion protruding from the first limiting wall and spaced apart from the end surface; a second clamping portion opposite to the first clamping portion, protruding from the second limiting wall and spaced apart from the end surface; a recess provided on the end surface and located between the first and second clamping portions; and a protrusion located on the end surface, protruding from the third limiting wall and aligned with the recess.

[0015] According to one aspect of the present application, the switch body is provided with: a stopper extending obliquely downward from the switch body to abut into the recess; and an opening located on the back side of the switch body to be buckled connected with the protrusion; wherein the two side edges of the switch body are respectively clamped between the first clamping portion and the end surface and between the second clamping portion and the end surface.

[0016] According to one aspect of the present application, the first back end comprises: a first transverse bend bent in a transverse direction on the back end wall from the first body, a first vertical bend bent downward in a vertical direction on the back end wall from the first transverse bend, and a first longitudinal bend bent in a longitudinal direction outward from the first vertical bend toward the shell; and the second back end comprises: a second transverse bend bent in a transverse direction on the back end wall from the second body, and a second longitudinal bend bent in a longitudinal direction outward from the second transverse bend to be coplanar with the first longitudinal bend.

[0017] According to one aspect of the present application, the side wall is provided with: a first side groove configured to cooperate with the first main body shape to fix the first main body on the side wall; and a second side groove configured to cooperate with the second main body shape to fix the second main body on the side wall.

[0018] According to one aspect of the present application, the first side groove is provided with a plurality of first tenons distributed along the extension direction of the first side groove, and the first main body is provided with a plurality of first through holes distributed along the extension direction of the first main body and cooperating with the plurality of first tenons in shape to fix the first main body in the first side groove; and the second side groove is provided with a plurality of second tenons distributed along the extension direction of the second side groove, and the second main body is provided with a plurality of second through holes distributed along the extension direction of the second main body and cooperating with the plurality of second tenons in shape to fix the second main body in the second side groove.

[0019] According to one aspect of the present application, the second main body comprises: a front end section, the second front end being arranged on one end of the front end section; a rear end section, the second rear end being arranged on one end of the rear end section; and a resistor, connected between the other end of the front end section and the other end of the rear end section.

[0020] According to one aspect of the present application, the front end section is provided with two clamping fingers at the other end thereof to clamp the lead wire extending from one side of the resistor; and the rear end section is provided with another two clamping fingers at the other end thereof to clamp the lead wire extending from the other side of the resistor.

[0021] According to another aspect of the present application, there is also provided an electric vehicle comprising the locking device according to any one of the above aspects. BRIEF DESCRIPTION OF DRAWINGS

[0022] The features of the present application will become more apparent in the following detailed description in conjunction with the accompanying drawings, in which like reference numerals identify corresponding elements throughout. The drawings provided throughout the disclosure should not be interpreted as being drawn to scale.

[0023] Figure 1 is a perspective view of a locking device according to an embodiment of the present application;

[0024] Figure 2 is a perspective view of the locking device in Figure 1 after removing the cover;

[0025] Figure 3 is a perspective view of the locking device in Figure 2is a perspective view of the locking device in the housing, showing the switch member in the on position;

[0026] Figure 4 is the housing with the carrier and drive assembly removed Figure 2 is a perspective view of the locking device in the housing, showing the switch member moved away from the on position;

[0027] Figure 5 is the carrier with the switch member provided in the locking device in the housing shown separately; Figure 1

[0028] Figure 6 is the housing with the switch member removed Figure 5 is a perspective view of the carrier in the housing, showing the top end of the second carrier portion;

[0029] Figure 7 is the switch member in the housing shown separately; Figure 5

[0030] Figure 8 is a perspective view of the first and second mating terminals shown separately mounted in the insert;

[0031] Figure 9 is a perspective view of the insert shown separately with the first and second mating terminals mounted;

[0032] Figure 10 is a bottom view of the insert in the housing; Figure 9

[0033] Figure 11 is a top view showing the combination of the insert, the first terminal and the second terminal;

[0034] Figure 12 is a perspective view showing the combination of the switch member, the first mating terminal, the second mating terminal, the first terminal, the second terminal, with the switch member in the on position;

[0035] Figure 13 is a perspective view showing the combination of the first terminal and the second terminal according to another embodiment of the present utility model;

[0036] Figure 14 is a perspective view of the locking device in the housing with the carrier, the insert, the drive assembly removed, showing the rear end wall; and Figure 2

[0037] is another angle perspective view of the housing, showing the first mounting portion, the second mounting portion, and the mounting rib. Figure 15 Figure 14

[0038] ​​​​​The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate the present application and, together with the description, further serve to explain the principles of the application and to enable a person skilled in the pertinent art to make and use the embodiments described herein. DETAILED DESCRIPTION

[0039] To make the objects, technical solutions and advantages of the present application clearer, the following further describes the present application in detail with reference to the embodiments and the accompanying drawings.

[0040] However, it should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present application. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to one of ordinary skill in the art that one or more embodiments can be practiced without these specific details. In other instances, well-known methods have not been described in detail in order to avoid unnecessarily obscuring the concepts of the present application.

[0041] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the present application. As used herein, the term "includes" indicates the presence of the features, steps, operations, but does not exclude the presence or addition of one or more other features.

[0042] In the case of using expressions similar to "at least one of A, B, and C, etc.", it should generally be interpreted to include at least one of each item, unless otherwise specified.

[0043] All terms used herein (including technical and scientific terms) have meanings that are commonly understood by one of ordinary skill in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having meanings that are consistent with the context of the specification, and should not be interpreted in an idealized or overly formal manner.

[0044] Referring to Figures 1 to 15 The present application discloses a locking device 1000 and an electric vehicle (not shown in the figure) comprising the locking device.

[0045] The locking device 1000 comprises a housing 100, a driving assembly 210, 220, 230, 240, 250, a locking rod 300, a first terminal 410, a first counterpart terminal 430, a second terminal 420, a second counterpart terminal 440, and a switch piece 500.

[0046] The housing 100 has a front end wall 110, a rear end wall 120, and side walls 130 extending between the front end wall 110 and the rear end wall 120. A cover 160 covers the housing 100 (see Figure 1 The drive assembly 210, 220, 230, 240, 250 is disposed within the housing 100. The lock rod 300 is configured to extend out of the housing 100 from the front end wall 110 under the drive of the drive assembly 210, 220, 230, 240, 250 to implement a locking function, so as to lock a charging gun (not shown in the figure) into a charging port (not shown in the figure).

[0047] The first terminal 410 has a first front end 411 fixed near the front end wall 110, a first rear end 412 fixed on the rear end wall 120, and a first main body 413 extending between the first front end 411 and the first rear end 412 and fixed on the side wall 130. The first counterpart terminal 430 has a first counterpart end 431 connected to the first front end 411 and a first connecting end 432 extending towards the front end wall 110. The second terminal 420 is spaced apart from the first terminal 410 and has a second front end 421 fixed near the front end wall 110, a second rear end 422 fixed on the rear end wall 120, and a second main body 423 extending between the second front end 421 and the second rear end 422 and fixed on the side wall 130. The second counterpart terminal 440 is spaced apart from the first counterpart terminal 430 and has a second counterpart end 441 connected to the second front end 421 and a second connecting end 442 extending towards the front end wall 110. The switch piece 500 is configured to move to an on position (see Figure 3 ) in which the first connecting end 432 and the second connecting end 442 are simultaneously contacted when implementing the locking function, and to an off position (see Figure 4 ) in which the first connecting end 432 and the second connecting end 442 are not simultaneously contacted when implementing the unlocking function, under the drive of the drive assembly 210, 220, 230, 240, 250. In the on position, the switch piece 500 electrically connects the first front end 411 and the second front end 421 by simultaneously contacting the first connecting end 432 and the second connecting end 442, so that a feedback loop (not shown in the figure) is turned on and sends a feedback signal to a controller (not shown in the figure) to inform the controller that the charging gun has been locked. In the off position, the switch piece 500 does not electrically connect the first front end 411 and the second front end 421, so that the feedback loop is turned off and cannot send a feedback signal to the controller.

[0048] Further, see Figure 8, the first mating end 431 is configured to extend away from the side wall 130 along the transverse direction D3, and the first connecting end 432 is configured to extend toward the front end wall 110 along the longitudinal direction D1. The second mating end 441 is configured to extend toward the side wall 130 along the transverse direction D3, and the second connecting end 442 is configured to extend toward the front end wall 110 along the longitudinal direction D1. The first mating end 431 is coplanar with the second mating end 441, the first connecting end 432 is coplanar with the second connecting end 442, the length of the first connecting end 432 along the longitudinal direction D1 is greater than the second connecting end 442, the first connecting end 432 is aligned with the second connecting end 442 along the transverse direction D3, and the first connecting end 432 is closer to the side wall 130 than the second connecting end 442 in the transverse direction D3.

[0049] Referring to Figures 11 to 15 , the first rear end 412 comprises: a first transverse bend 4121 curved from the first main body 413 on the rear end wall 120 along the transverse direction D3, a first vertical bend 4122 curved from the first transverse bend 4121 on the rear end wall 120 along the vertical direction D2 downward, and a first longitudinal bend 4123 curved from the first vertical bend 4122 along the longitudinal direction D1 outward of the shell 100. The second rear end 422 comprises: a second transverse bend 4221 curved from the second main body 423 on the rear end wall 120 along the transverse direction D3, and a second longitudinal bend 4222 curved from the second transverse bend 4221 along the longitudinal direction D1 outward of the shell 100 to be coplanar with the first longitudinal bend 4123.

[0050] Referring to Figure 3 , 4 , 14, 15, the side wall 130 is provided with: a first side slot (not shown in the figure) configured to be shape-fitted with the first main body 413 to fix the first main body 413 on the side wall 130; and a second side slot (not shown in the figure) configured to be shape-fitted with the second main body 423 to fix the second main body 423 on the side wall 130. The first side slot is provided therein with a plurality of first tenons 1311 distributed along the extension direction of the first side slot, and the first main body 413 is provided therein with a plurality of first through holes 4131 distributed along the extension direction of the first main body 413 and shape-fitted with the plurality of first tenons 1311 to fix the first main body 413 in the first side slot. The second side slot is provided therein with a plurality of second tenons 1321 distributed along the extension direction of the second side slot, and the second main body 423 is provided therein with a plurality of second through holes 4231 distributed along the extension direction of the second main body 423 and shape-fitted with the plurality of second tenons 1321 to fix the second main body 423 in the second side slot.

[0051] The first main body 413 of the first terminal 410 and the second main body 423 of the second terminal 420 are respectively mounted by arranging the first side groove and the second side groove on the side wall 130, the micro switch with a large volume is avoided to be arranged in the locking device 1000, the problems that the micro switch occupies a large internal space in the locking device 1000 and the micro switch is frequently replaced are solved, the space in the shell 100 is saved, and therefore the design difficulty of the locking device 1000 is reduced.

[0052] Referring to Figure 13 In another embodiment according to the present application, the second main body 423 comprises a front end section 4232, a rear end section 4233 and a resistor 4234. The second front end 421 is arranged on one end of the front end section 4232. The second rear end 422 is arranged on one end of the rear end section 4233. The resistor 4234 is connected between the other end of the front end section 4232 and the other end of the rear end section 4233. The front end section 4232 is provided with two clamping fingers 42321 at the other end thereof to clamp a lead wire 42341 extending from one side of the resistor 4234. The rear end section 4233 is provided with another two clamping fingers 42331 at the other end thereof to clamp a lead wire 42342 extending from the other side of the resistor 4234. The value of the resistor 4234 can be set according to requirements. However, it should be understood by those skilled in the art that the present application is not limited thereto, and the resistor 4234 can be replaced by any suitable electronic component according to actual requirements to achieve the desired electrical performance.

[0053] The switch piece 500, the first mating terminal 430, the second mating terminal 440, the first terminal 410 and the second terminal 420 made of metal are installed in the shell 100 (as described in further detail below) and the electrical connection between the first terminal 410 and the second terminal 420 is controlled by moving the switch piece 500 to simultaneously contact or disengage the first mating terminal 430 and the second mating terminal 440, the structure of the locking device 1000 is simplified, and since the switch piece 500, the first mating terminal 430, the second mating terminal 440, the first terminal 410 and the second terminal 420 are all components made of metal, the structure is simple and durable, which can effectively replace the PCB, thereby reducing the cost of the locking device 1000, facilitating the assembly of the locking device 1000, and making the locking device 1000 more durable.

[0054] Referring to Figure 8 , 11, 12 and 15, the first front end 411 is provided with a first arm 414 extending from the first body 413 in the transverse direction D3 away from the side wall 130 to abut onto the first mating end 431. The second front end 421 is provided with a second arm 424 extending from the second body 423 in the transverse direction D3 away from the side wall 130 to abut onto the second mating end 441, the second arm 424 is closer to the front end wall 110 in the longitudinal direction D1 than the first arm 414.

[0055] Referring to Figures 9 to 11 , the locking device 1000 further comprises: an insert 140 removably mounted into the housing 100, the first mating end 430 and the second mating end 440 are respectively provided in the insert 140 and are configured to be stepped-shaped, such that the first mating end 431 and the second mating end 441 are exposed at a top side of the insert 140 to be able to respectively contact the first arm 414 and the second arm 424 (i.e. the first mating end 431 contacts the first arm 414, the second mating end 441 contacts the second arm 424), and the first connecting end 432 and the second connecting end 442 are exposed at a bottom side of the insert 140 to be able to respectively contact the switch member 500.

[0056] Further, referring to Figure 3 , 4 , 7 and 12, the switch member 500 comprises: a switch body 510, a first elastic arm 520 and a second elastic arm 530. The switch body 510 is configured to be plate-shaped and has a front side 511 facing the front end wall 110 and a back side 512 facing the back end wall 120. The first elastic arm 520 and the second elastic arm 530 respectively extend obliquely upward from the front side 511 to the back side 512 towards the bottom side of the insert 140, such that the first elastic arm 520 and the second elastic arm 530 move against the bottom side when the switch member 500 is moved. The switch member 500 is configured such that when moved to the on position, the first elastic arm 520 contacts the first connecting end 432 and the second elastic arm 530 contacts the second connecting end 442. The movement of the first elastic arm 520 and the second elastic arm 530 against the bottom side makes the switch member 500 more wear-resistant, prolonging the service life of the switch member 500.

[0057] Further, referring to Figure 9The insert 140 is provided with, at its top side, a first top groove 141, a second top groove 142, and a third top groove 143. The first top groove 141 is used to accommodate and expose the first mating end 431. The second top groove 142 is spaced apart from the first top groove 141 and is used to accommodate and expose the second mating end 441. The third top groove 143 is spaced apart from the first top groove 141 and the second top groove 142 and is used to removably mount the insert 140 into the housing 100, as will be further detailed below. The insert 140 is further provided with two flanges 144, which are respectively located at two sides of the insert 140 along the longitudinal direction D1 and are used to removably mount the insert 140 into the housing 100.

[0058] Referring to Figure 9 and 15 The housing 100 further has a top wall 150, and the locking device 1000 is provided with a first mounting portion 151, a second mounting portion 152, and a mounting rib 153. The top side of the first mounting portion 151 is provided on the top wall 150, the rear side of the first mounting portion 151 is provided on the front end wall 110, the lateral side of the first mounting portion 151 is provided on the side wall 130, and the first mounting portion 151 is provided with a first mounting groove 1511 extending along the transverse direction D3 and shaped to cooperate with one of the two flanges 144. The top side of the second mounting portion 152 is provided on the top wall 150, and the second mounting portion 152 is provided with a second mounting groove 1521 extending along the transverse direction D3 and shaped to cooperate with the other of the two flanges 144. The mounting rib 153 protrudes from the side wall 130 on the top wall 150 along the transverse direction D3 and is shaped to cooperate with the third top groove 143. This arrangement of the top wall 150 of the housing 100 enables the insert 140 to be removably mounted into the housing 100.

[0059] Further, referring to Figure 2 , 5The driving assembly 210, 220, 230, 240, 250 comprises a motor 210, a gear set 220, 230, 240, and a carrier 250. The motor 210 is provided with a rotatable threaded rod 211. The gear set 220, 230, 240 is engaged with and driven to rotate by the threaded rod 211. The carrier 250 comprises a first carrier portion 251 and a second carrier portion 252. The first carrier portion 251 extends along the longitudinal direction D1 and is provided with engagement teeth 2511 engaged with the gear set 220, 230, 240 to be driven to move. The second carrier portion 252 extends upwardly from the first carrier portion 251 along the vertical direction D2. The lock rod 300 is fixed on the front surface of the second carrier portion 252 facing the front end wall 110 along the longitudinal direction D1, and the switch member 500 is fixed on the top end of the second carrier portion 252 facing the bottom side of the embedding member 140, such that when the switch member 500 is moved to the on position, the front surface of the second carrier portion 252 abuts against the front end wall 110 to prevent the carrier 250 and the switch member 500 located thereon from moving further forward. It is to be noted that the second carrier portion 252 is provided with a plurality of engagement teeth 2521 engaged with the gear set 220, 230, 240 to be driven to move. Figure 2 The gear set 220, 230, 240 comprises a first gear 220 engaged with the threaded rod 211, a second gear 230 engaged with the first gear 220, and a third gear 240 engaged with the second gear 230 and the first carrier portion 251.

[0060] Further, referring to Figure 6 The top end of the second carrier portion 252 is provided with an end surface 2521, a first limiting wall 2522, a second limiting wall 2523, and a third limiting wall 2524 surrounding the end surface 2521 in a "U" shape, the first limiting wall 2522 and the second limiting wall 2523 are opposite to each other, and the third limiting wall 2524 is connected between the first limiting wall 2522 and the second limiting wall 2523, a first clamping portion 2525 extending from the first limiting wall 2522 and spaced apart from the end surface 2521, a second clamping portion 2526 opposite to the first clamping portion 2525, extending from the second limiting wall 2523 and spaced apart from the end surface 2521, a recess 2527 provided on the end surface 2521 and located between the first clamping portion 2525 and the second clamping portion 2526, and a protrusion 2528 located on the end surface 2521, extending from the third limiting wall 2524 and aligned with the recess 2527.

[0061] Referring back to Figure 7The switch body 510 is provided with a stopper 513 and an opening 514. The stopper 513 extends obliquely downward from the switch body 510 to abut into the recess 2527. The opening 514 is located at the rear side 512 of the switch body 510 to be buckled with the protrusion 2528. Two side edges 515, 516 of the switch body 510 are respectively clamped between the first clamping portion 2525 and the end face 2521 and between the second clamping portion 2526 and the end face 2521. The switch body 510 is fixed on the top end of the second bearing portion 252 by arranging the stopper 513, the opening 514, the side edges 515, 516.

[0062] The various components of the locking device 1000 in the utility model can be assembled together without welding, wiring and other processes, greatly simplifying the structure and use of the locking device 1000, and also being conducive to reducing the manufacturing cost of the locking device 1000.

[0063] The utility model embodiment has been described in detail in combination with the drawings. It should be noted that the implementation modes not shown or described in the drawings or the specification are known to those skilled in the art, and are not described in detail. In addition, the definition of each component described above is not limited to the various specific structures, shapes or modes mentioned in the embodiment, and those skilled in the art can make simple changes or replacements.

[0064] Those skilled in the art can understand that the features described in the various embodiments and / or claims of the utility model can be combined or / and combined, even if such combination or combination is not explicitly described in the utility model. In particular, the features described in the various embodiments and / or claims of the utility model can be combined and / or combined without departing from the spirit and teachings of the utility model. All these combinations and / or combinations fall within the scope of the utility model.

[0065] The above specific embodiments further illustrate the purpose, technical solutions and advantages of the utility model. It should be understood that the above description is only for specific embodiments of the utility model and is not intended to limit the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A locking device, characterized in that comprises: a housing having a front end wall, a rear end wall, and a side wall extending between the front end wall and the rear end wall; a driving assembly disposed in the housing; a lock lever configured to protrude out of the housing from the front end wall under driving of the driving assembly to implement a locking function; a first terminal having a first front end fixed near the front end wall, a first rear end fixed on the rear end wall, and a first body extending between the first front end and the first rear end and fixed on the side wall; a first counterpart terminal having a first counterpart end connected to the first front end and a first connecting end extending toward the front end wall; a second terminal spaced apart from the first terminal, having a second front end fixed near the front end wall, a second rear end fixed on the rear end wall, and a second body extending between the second front end and the second rear end and fixed on the side wall; a second counterpart terminal spaced apart from the first counterpart terminal, having a second counterpart end connected to the second front end and a second connecting end extending toward the front end wall; and a switch piece configured to move to an on position of simultaneously contacting the first connecting end and the second connecting end when the locking function is implemented under driving of the driving assembly.

2. The locking device according to claim 1, wherein the first front end is provided with a first arm protruding from the first body in a transverse direction away from the side wall to abut onto the first counterpart end; and the second front end is provided with a second arm protruding from the second body in the transverse direction away from the side wall to abut onto the second counterpart end, the second arm being closer to the front end wall in a longitudinal direction than the first arm. Further comprising: an insert removably installed into the housing, the first counterpart terminal and the second counterpart terminal are respectively disposed in the insert and configured to be stepped such that the first counterpart end and the second counterpart end are exposed on a top side of the insert and the first connecting end and the second connecting end are exposed on a bottom side of the insert.

3. The locking device of claim 2, wherein, 4. The locking device according to claim 3, wherein the first counterpart end is configured to extend in the transverse direction away from the side wall, and the first connecting end is configured to extend in the longitudinal direction toward the front end wall; the second counterpart end is configured to extend in the transverse direction toward the side wall, and the second connecting end is configured to extend in the longitudinal direction toward the front end wall.

5. The locking device according to claim 4, wherein the first counterpart end is coplanar with the second counterpart end, the first connecting end is coplanar with the second connecting end, a length of the first connecting end in the longitudinal direction is greater than that of the second connecting end, the first connecting end is aligned with the second connecting end in the transverse direction, and the first connecting end is closer to the side wall in the transverse direction than the second connecting end.

6. The locking device according to any one of claims 3 to 5, wherein the insert is provided on the top side thereof with: a first top slot for accommodating and exposing the first counterpart end; a second top slot spaced apart from the first top slot for accommodating and exposing the second counterpart end; and a third top slot spaced apart from the first top slot and the second top slot for removably installing the insert into the housing; and the insert is further provided with two flanges respectively on two sides of the insert in the longitudinal direction for removably installing the insert into the housing. the housing further has a top wall, and the locking device is provided with: ​ ​ ​ ​ 7. The locking device of claim 6, wherein, ​ The first mounting portion is provided with a first mounting groove extending along the transverse direction and matched with one of the two flanges in shape; The second mounting portion is provided with a second mounting groove extending along the transverse direction and matched with the other of the two flanges in shape; and The mounting rib is protruded from the side wall along the transverse direction on the top wall and matched with the third top groove in shape.

8. The locking device of claim 7, wherein, The switch piece comprises: a switch body configured in a plate shape and having a front side facing the front end wall and a back side facing the back end wall; and first and second elastic arms respectively extending obliquely upward from the front side to the back side toward the bottom side of the insert, so that the first and second elastic arms are moved against the bottom side when the switch piece is moved; The switch piece is configured such that, when moved to the on position, the first elastic arm contacts the first connecting end and the second elastic arm contacts the second connecting end.

9. The locking device of claim 8, wherein, The driving assembly comprises: a motor provided with a rotatable threaded rod; a gear set engaged with and driven to rotate by the threaded rod; and a carrier comprising: a first carrier portion extending along the longitudinal direction and provided with engagement teeth engaged with the gear set to be driven to move; and a second carrier portion extending upward along the vertical direction from the first carrier portion, wherein the lock rod is fixed on a front face of the second carrier portion facing the front end wall along the longitudinal direction, and the switch piece is fixed on a top end of the second carrier portion facing the bottom side of the insert, so that, when the switch piece is moved to the on position, the front face of the second carrier portion is abutted against the front end wall.

10. The locking device of claim 9, wherein, The top end of the second carrier portion is provided with: an end face; first, second and third limiting walls surrounding the end face in a "U" shape along the circumferential direction of the end face, the first and second limiting walls being opposite to each other, and the third limiting wall being connected between the first and second limiting walls; a first clamping portion protruding from the first limiting wall and spaced apart from the end face; a second clamping portion opposite to the first clamping portion, protruding from the second limiting wall and spaced apart from the end face; a recess provided on the end face and located between the first and second clamping portions; a protrusion located on the end face, protruding from the third limiting wall and aligned with the recess.

11. The locking device of claim 10, wherein, The switch body is provided with: a stopper obliquely downward extending from the switch body to abut into the recess; and an opening located on the back side of the switch body to be buckled with the protrusion; wherein the two side edges of the switch body are respectively clamped between the first clamping portion and the end face and between the second clamping portion and the end face.

12. The locking device according to any one of claims 1 to 5 and 7 to 11, wherein the first back end comprises: a first transverse bend curved from the first body on the back end wall along the transverse direction, a first vertical bend curved from the first transverse bend on the back end wall along the vertical direction downward, and a first longitudinal bend curved from the first vertical bend along the longitudinal direction outward of the housing; and the second back end comprises: a second transverse bend curved from the second body on the back end wall along the transverse direction, a second vertical bend curved from the second transverse bend on the back end wall along the vertical direction downward, and a second longitudinal bend curved from the second vertical bend along the longitudinal direction outward of the housing. The second rear end includes a second lateral bend curved from the second main body on the rear end wall in a lateral direction and a second longitudinal bend curved from the second lateral bend in a longitudinal direction outward of the housing to be coplanar with the first longitudinal bend.

13. The locking device of claim 12, wherein, The side wall is provided with: a first side groove configured to be shaped to fit the first main body to secure the first main body on the side wall; and a second side groove configured to be shaped to fit the second main body to secure the second main body on the side wall.

14. The locking device according to claim 13, wherein the first side groove is provided therein with a plurality of first protrusions distributed in an extension direction of the first side groove, the first main body is provided therein with a plurality of first through holes distributed in an extension direction of the first main body to be shaped to fit the plurality of first protrusions to secure the first main body in the first side groove; and the second side groove is provided therein with a plurality of second protrusions distributed in an extension direction of the second side groove, the second main body is provided therein with a plurality of second through holes distributed in an extension direction of the second main body to be shaped to fit the plurality of second protrusions to secure the second main body in the second side groove. The second main body includes:

15. The locking device of any one of claims 1-5, 7-11, and 13-14, wherein, a front end section, the second front end being provided on one end of the front end section; a rear end section, the second rear end being provided on one end of the rear end section; and a resistance connected between the other end of the front end section and the other end of the rear end section.

16. The locking device according to claim 15, wherein the front end section is provided at the other end thereof with two clamping fingers to clamp lead wires extending from one side of the resistance; and the rear end section is provided at the other end thereof with other two clamping fingers to clamp lead wires extending from the other side of the resistance. The locking device according to any one of claims 1 to 16.

17. An electric vehicle, characterized by ​

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