CN213705143U

CN213705143U - Lock base, locking mechanism and electric automobile

Info

Publication number: CN213705143U
Application number: CN202022223885.5U
Authority: CN
Inventors: 张建平; 黄春华
Original assignee: Aulton New Energy Automotive Technology Co Ltd
Current assignee: Aulton New Energy Automotive Technology Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-07-16
Anticipated expiration: 2030-09-30

Abstract

The utility model provides a lock base, locking mechanism and electric automobile. The bottom of the electric automobile is provided with a locking mechanism, and the locking mechanism can lock and unlock a battery pack installed on the electric automobile. The locking mechanism includes a lock base and a connecting rod. The lock base includes a base body and a bolt, the base body having a first surface and a second surface that are opposite to each other. The first surface is inwards sunken to form a locking groove, and the locking groove is used for allowing a locking shaft on the battery pack to enter and lock. The lock tongue is rotatably arranged on the base body through a fixing piece to be switched between a locking state and an unlocking state, and when the lock tongue is in the locking state, the lock tongue is partially positioned in the lock groove to block the lock shaft from leaving the lock groove. The rotating shaft penetrates through the base body from the first surface to the second surface opposite to the first surface, the second end portion of the rotating shaft located on the side of the second surface protrudes out of the second surface, and the second end portion is used for positioning the base body on a support at the bottom of the electric automobile.

Description

Lock base, locking mechanism and electric automobile

Technical Field

The utility model relates to a lock base, locking mechanism and electric automobile.

Background

The conventional battery pack of the electric vehicle is generally arranged in a fixed type or a replaceable type, wherein the fixed type battery pack is generally fixed on the vehicle, and the vehicle is directly used as a charging object during charging. The replaceable battery pack is generally fixed to a bracket of the vehicle in a movable mounting manner, and the replaceable battery pack can be removed to be replaced or charged independently and then mounted on the vehicle after the replacement battery pack is charged.

In the prior art, a battery pack is generally locked by arranging a locking mechanism in an electric vehicle, for example, in the scheme disclosed in chinese patent application with publication number CN106427514A and application number CN201611041220.4, the locking device arranged at the bottom of the electric vehicle and the lock shafts arranged at two sides of the battery pack are matched to detachably mount the battery pack at the bottom of the electric vehicle, how the locking device is mounted at the bottom of the electric vehicle is not disclosed, and the positioning and mounting accuracy between the locking mechanism and the bracket directly affects the accuracy of the locking and unlocking process and the battery replacement efficiency. In addition, the scheme of the electric vehicle for reducing the weight generally adopts the scheme disclosed in chinese patent application with publication number CN209666801U and application number CN201920195379.4, and discloses a motor front suspension mounting structure of an electric vehicle, which includes a front side plate, a rear side plate and an inner side plate all provided with lightening holes, that is, in the prior art, the suspension structure of the vehicle body itself is generally provided with lightening holes to reduce the weight of the vehicle body, so that it can be seen that, in the prior art, the locking mechanism arranged on the chassis is not improved in the weight reduction while the supporting strength is ensured.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to improve the location installation accuracy of lock base and support in the time of simplifying lock base structure, provide a lock base, locking mechanism and electric automobile.

The utility model discloses an above-mentioned technical problem is solved through following technical scheme:

the utility model provides a lock base locates electric automobile's bottom for lock the battery package on electric automobile, the lock base includes:

a base body;

the locking groove is inwards sunken from the first surface of the base body and used for enabling a locking shaft on the battery pack to enter and be locked;

the lock tongue is rotatably arranged on the base body through a rotating shaft to switch between a locking state and an unlocking state, when the lock tongue is in the locking state, the lock tongue part is positioned in the lock groove to block the lock shaft from leaving the lock groove, the rotating shaft penetrates through the base body from the first surface to a second surface opposite to the first surface, a second end part of the rotating shaft positioned on the side of the second surface protrudes out of the second surface, and the second end part is used for positioning the base body on a support at the bottom of an electric automobile.

In this scheme, the locked groove can hold the lock axle of battery package to the cooperation spring bolt makes the lock axle can the locking in locking the base. The first end of the rotating shaft faces one side of the first surface, the second end protrudes from the second surface of the base body, and the second end can be inserted into the concave part of the support in a matched mode, so that the lock base can be conveniently located and installed on the support. The existing bolt rotating shaft in the lock base is used as a positioning and mounting component, so that the structure of the lock base can be simplified, the positioning and mounting accuracy of the lock base and the support can be improved, multiple effects can be realized by one part, and the structure of the lock base is compact.

Preferably, the second end portion has a threaded portion for threaded connection with the bracket.

In this embodiment, the recess of the bracket may be a through hole, and the second end of the rotating shaft may be inserted from one side of the through hole and screwed with the nut at the other side of the through hole, or the recess of the bracket may be a threaded portion, and the second end of the rotating shaft is directly screwed with the bracket. That is, the rotation shaft plays a role of fixing the lock base to the bracket in addition to a role of assisting the positioning of the lock base.

Preferably, when the lock tongue is in the locked state, the axis of the rotating shaft is higher than the axis of the lock shaft located in the lock groove.

In this scheme, under the locking state, even electric automobile takes place acutely to rock at the in-process of traveling and leads to the lock axle to move relative lock base, thereby lead to the lock axle to exert the effort to the spring bolt, because the axle center of rotation axis is higher than the axle center of lock axle, this effort can lead to the downward pivoted trend of spring bolt, locking direction pivoted trend promptly, and then improve the stability of lock axle locking in the lock base, prevent to make the lock axle convert into the unblock state because of the spring bolt upwards rotates, even under the state of jolting, locking mechanism is automatic unblock also not easily, improve the fixed reliability of battery package.

Preferably, the base body is further provided with a positioning shaft which penetrates through the base body and protrudes out of the second surface.

In this scheme, the location axle can insert in another concave part of support coordinately, and the base body utilizes rotation axis and location axle and support location simultaneously, and the mode location that base body and support pass through two holes in one side promptly is fixed a position, and positioning accuracy is higher, and the installation is more stable, avoids locking relative motion between base and the support.

Preferably, the positioning shaft is located below the locking groove.

In this scheme, with the space that the location axle setting can make full use of base body in the below of locked groove, avoid the location axle to occupy the space of locked groove, cause the motion that the location axle interfered the locked shaft.

Preferably, a line connecting the rotating shaft and the positioning shaft forms an included angle with a horizontal plane, and the included angle is larger than 0 degree and smaller than 90 degrees.

In this scheme, the rotation axis sets up with the location axle staggers in the horizontal direction to dodge the position of locked groove, when realizing the positioning action, avoid causing the influence to the locking and the unblock of lock base.

Preferably, the base body is provided with a lock tongue hole communicated with the lock groove, so that the lock tongue extends out of the lock groove through the lock tongue hole.

In the scheme, the lock tongue enters or leaves the lock groove through the lock tongue hole so as to realize switching between the locking state and the unlocking state. Meanwhile, the lock bolt hole can also play a role in reducing the weight of the lock base.

Preferably, the rotating shaft is partially disposed through the bolt hole.

In the scheme, the lock tongue is connected to the base body through the rotating shaft, and when the lock tongue is in an unlocking state, the lock tongue is at least partially positioned in the lock tongue hole, so that the structure is compact; when the lock is in a locking state, the lock tongue enters the lock groove from the lock tongue hole, and the lock shaft in the lock groove is locked.

Preferably, the longitudinal section of the lock tongue hole is L-shaped.

In this scheme, the spring bolt hole sets up the limit portion at the locked groove to partly surround the outside of locked groove, the spring bolt of being convenient for on the one hand rotates between spring bolt hole and locked groove with unblock or locking battery package, and on the other hand cooperatees with the structure of locked groove, so that the structure of lock base is more compact.

Preferably, the base body is provided with an opening communicated with the locking groove, and the opening is used for the locking shaft to enter and exit the locking groove.

In this scheme, the locked groove passes through the opening and communicates with the outside to make the lock axle can pass in and out the locked groove.

Preferably, a guide inclined plane is arranged between the bottom surface of the base body and the first surface, and the guide inclined plane inclines from the first surface to the second surface.

In this scheme, in the motion process of battery package towards the lock base, the effect of direction can be played in the direction inclined plane for the battery package can be installed on electric automobile smoothly.

Preferably, the opening has a guide portion which forms a flare opening which flares away from the lock groove.

In this scheme, under the guide effect of horn mouth, the locked shaft can get into the locked groove more conveniently.

Preferably, the height of the rotating shaft protruding from the second surface is 10% -40% of the thickness of the base body.

In this scheme, if the rotation axis protrusion is too much, then rotation axis occupation space is great, improves the degree of difficulty of the installation of lock base, if the rotation axis protrusion is short, then the location effect is relatively poor, influences the location accuracy of lock base.

Preferably, the second surface is provided with a notch, and the rotation shaft is located between the notch and the lock groove.

In this scheme, can alleviate the weight of base body through setting up the notch to improve the duration and the load capacity of electric motor car. And because the notch is located the back of locked groove, it is less to the support intensity influence of the first surface at locked groove place, avoids influencing locking process or unblock process, satisfies the requirement of compromise lock base support intensity and lightweight simultaneously.

Preferably, a threaded hole is formed in an edge portion of the second surface and used for being connected with the bracket screw.

In this scheme, utilize the screw hole can realize the screw connection of lock base and support for the dismouting of locking seat is comparatively convenient. And because the screw hole is located the limit portion of second surface, avoided the position of keyway, consequently less to the intensity influence of base body.

Preferably, one end of the lock slot is a locking position of the lock shaft, the other end of the lock slot is a connecting position of the rotating shaft, and the lock tongue includes a fixed end rotatably connected to the rotating shaft, a contact end extending toward the locking position of the lock shaft and used for abutting against the lock shaft, and a rotating end extending toward the outside of the lock base and used for rotating around the rotating shaft under an external action.

In this scheme, the stiff end of spring bolt rotates and connects in the one end of locked groove, and the contact jaw of spring bolt then can support the lock axle in the other end of locked groove to make the lock axle by the restriction in the locking position. An external force may be applied to the rotating end to cause the latch bolt to rotate about the rotational axis to switch the latch shaft between the latched state and the unlatched state.

Preferably, a first concave portion is arranged between the fixed end and the contact end, a second concave portion is arranged between the contact end and the rotating end, when the lock tongue is in a locked state, the first concave portion is arranged in the direction of the opening of the lock groove, which is faced by the lock tongue, and the second concave portion is arranged in the direction of the lock shaft, which is faced by the lock tongue.

In this scheme, when the spring bolt is in the unblock state, first depressed part changes to the orientation of orientation locked groove to with the inner wall shape phase-match of locked groove, shift out the in-process at the locked shaft from the locked groove and dodge the locked shaft avoids interfering the motion of locked shaft, when the spring bolt is in the locking state, second depressed part and the mutual butt of locked shaft that is located the locked groove, with the motion of restriction locked shaft, make the locked shaft by firm locking in the locked groove.

Preferably, in the process of switching the lock tongue between the locking state and the unlocking state, the contact end and the rotating end are always located on the same side of the fixed end.

In this scheme, because contact jaw and rotation end lie in same one side of stiff end all the time, after getting rid of outside unblock effort, because the focus of spring bolt is in the right side top of stiff end, under spring bolt self action of gravity, the spring bolt can rotate to the locking state clockwise and carry out locking once more, avoids rotating to the opposite side of stiff end because of rotation end or contact jaw, leads to the spring bolt can not switch to the locking state under self action of gravity, leads to the locking inefficacy.

A locking mechanism characterised by comprising a lock base as hereinbefore described.

In this scheme, locking mechanism can utilize the lock base to carry out unblock and locking to the locking of battery package, and locking mechanism can utilize the rotation axis to fix a position when according to on the support in addition for locking mechanism's installation is comparatively convenient, and the assembly precision is higher.

An electric vehicle is characterized by comprising the locking mechanism.

In this scheme, electric automobile can realize unblock and the locking to the battery package through locking mechanism, and when assembling electric automobile, locking mechanism fixes a position through the rotation axis, realizes quick accurate positioning, has improved installation effectiveness and precision. Because the assembly precision of locking mechanism is higher, consequently the change precision of battery package is also higher to trade electric efficiency and trade electric stability has been improved.

The utility model discloses an actively advance the effect and lie in:

the utility model discloses an among lock base, locking mechanism and the electric automobile, the locked groove of base body can hold the lock axle of battery package to the cooperation spring bolt makes lock axle locking in the lock base. The first end of rotation axis is towards one side of first surface, and the second end is protruding from the second surface of base body, and the second end can cooperate and insert in the concave part of support, consequently when installing lock base on the support, lock base can be comparatively conveniently fixed a position. The rotation axis has still played the effect of supplementary lock base location except being used for connecting the spring bolt, and a part can realize multiple effect, and this makes the structure of lock base comparatively compact. The locking mechanism comprising the lock base can be quickly, conveniently and accurately installed on a support of an electric automobile, and the electric automobile comprising the locking mechanism has better battery replacement accuracy and battery replacement stability.

Drawings

Fig. 1 is a schematic structural diagram of a locking mechanism according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a lock base according to an embodiment of the present invention.

Fig. 3 is another schematic structural diagram of a lock base according to an embodiment of the present invention.

Fig. 4 is a schematic view of an internal structure of a lock base according to an embodiment of the present invention, which is in a locked state.

Fig. 5 is a schematic view of an internal structure of a lock base according to an embodiment of the present invention, which is in an unlocked state.

Fig. 6a to 6c are schematic diagrams illustrating the unlocking and locking principle of the locking mechanism according to an embodiment of the present invention.

Description of the reference numerals

Base body 1

First surface 11

Second surface 12

Support frame 13

Bolt hole 14

First space 141

Second space 142

Guide ramp 15

Threaded hole 16

Lock slot 2

Notch 3

Opening 4

Guide part 41

Bolt 5

Fixed end 51

Rotating end 52

Contact end 53

First recessed portion 54

Second recess 55

Elastic member 6

Rotating shaft 7

First end 71

Second end 72

Lock shaft 8

Positioning shaft 9

Lock base 10

Connecting rod 20

Elastic restoring member 30

Locking mechanism 100

Detailed Description

The present invention will be more clearly and completely described below with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The embodiment of the utility model provides an electric automobile, this electric automobile's bottom is provided with locking mechanism 100, and locking mechanism 100 can realize locking and unblock to installing the battery package on electric automobile.

Referring specifically to fig. 1, the locking mechanism 100 includes a lock base 10 and a connecting rod 20. As shown in fig. 2, the lock base 10 includes a base body 1 and a latch bolt 5, and the base body 1 has a first surface 11 and a second surface 12 opposite to each other. The first surface 11 is recessed inwardly to form a locking groove 2, and the locking groove 2 is used for a locking shaft 8 on the battery pack to enter and lock. The latch 5 is rotatably provided on the base body 1 through a rotation shaft 7 to be switched between a latched state and an unlatched state, and when the latch 5 is in the latched state, the latch 5 is partially positioned in the latch groove 2 to block the latch shaft 8 from leaving the latch groove 2. Therefore, the locking groove 2 can accommodate the locking shaft 8 of the battery pack and cooperate with the latch 5 so that the locking shaft 8 can be locked in the lock base 10.

Specifically, the locking groove 2 has one end serving as a locking position of the locking shaft 8 and the other end serving as a connecting position of the rotation shaft 7, and the latch 5 includes a fixed end 51 rotatably connected to the rotation shaft 7, a contact end 53 extending toward the locking position of the locking shaft 8 and adapted to abut against the locking shaft 8, and a rotation end 52 extending toward the outside of the lock base 10 and adapted to rotate around the rotation shaft 7 under an external action.

The fixed end 51 of the latch bolt 5 is rotatably connected to one end of the lock slot 2, and the contact end 53 of the latch bolt 5 can press the lock shaft 8 against the other end of the lock slot 2, so that the lock shaft 8 is limited to the locking position. An external force may be applied to the rotating end 52 to rotate the latch bolt 5 about the rotation axis 7, thereby switching the latch shaft 8 between the latched state and the unlatched state. In the present embodiment, the locking mechanism 100 includes at least two lock bases 10. By providing a plurality of lock bases 10, the locking mechanism 100 has a strong ability to fix the battery pack. The rotating end 52 of each lock tongue 5 is connected to the connecting rod 20, and when the connecting rod 20 is driven to move or a certain lock tongue 5 is driven to move, the plurality of lock tongues 5 can rotate synchronously, so that the plurality of lock tongues 5 can lock and unlock the plurality of lock shafts 8 synchronously. In this embodiment, the rotating end 52 is pivotally connected to the connecting rod 20 (e.g., using a pin).

When the lock base 10 needs to be unlocked or locked, the connecting rod 20 or any lock tongue 5 is driven by external force, all the lock tongues 5 can be driven to synchronously rotate, and the plurality of lock tongues 5 can be synchronously switched to the unlocking state (figure 6c) from the locking state (figure 6a) through the intermediate state (figure 6b), and vice versa, so that the plurality of lock shafts 83 can be synchronously locked and unlocked, the control of locking and unlocking is convenient, and the quick locking and unlocking of the battery pack are facilitated.

Referring to fig. 2 and 3, the rotating shaft 7 penetrates through the base body 1 from the first surface 11 to the second surface 12 opposite to the first surface 11, a second end 72 of the rotating shaft 7 located on the second surface 12 side protrudes from the second surface 12, and the second end 72 is used for positioning the base body 1 on a support of the bottom of the electric vehicle.

The first end 71 of the rotating shaft 7 faces the side of the first surface 11, the second end 72 protrudes from the second surface 12 of the base body 1, and the second end 72 can be inserted into the concave portion of the bracket in a matching manner, so that the lock base 10 can be conveniently positioned and installed on the bracket. The existing bolt rotating shaft in the lock base is used as a positioning and mounting component, so that the structure of the lock base can be simplified, the positioning and mounting accuracy of the lock base and the support can be improved, one part can achieve multiple effects, and the structure of the lock base 10 is compact.

In a preferred embodiment, the second end 72 has a threaded portion for threaded connection with a bracket. For example, the recess of the bracket of the electric vehicle may be a through hole, and the second end portion 72 of the rotating shaft 7 may be inserted from one side of the through hole and screwed with a nut at the other side of the through hole, or the recess of the bracket may be a screw portion, and the second end portion 72 of the rotating shaft 7 may be directly screwed with the bracket. That is, the rotation shaft 7 plays a role of fixing the lock base 10 to the bracket in addition to a role of assisting the positioning of the lock base 10.

The base body 1 is further provided with a positioning shaft 9 which penetrates through the base body 1 and protrudes out of the second surface 12. The location axle 9 can insert in another concave part of support coordinately, and base body 1 utilizes rotation axis 7 and location axle 9 and support location simultaneously, and base body 1 is fixed a position through the mode in two holes of one side with the support promptly, and positioning accuracy is higher, and the installation is more stable, avoids locking relative motion between base and the support.

The positioning shaft 9 is positioned below the locking groove 2. Set up location axle 9 in the below of locked groove 2 can make full use of the space of base body 1, avoid location axle 9 to occupy the space of locked groove 2, cause location axle 9 and lock axle 8 to interfere.

The connecting line of the rotating shaft 7 and the positioning shaft 9 forms an included angle with the horizontal plane, and the included angle is larger than 0 degree and smaller than 90 degrees. Rotation axis 7 staggers the setting with location axle 9 in the horizontal direction to dodge the position of locked groove 2, when realizing the positioning action, avoid causing the influence to the locking and the unblock of lock base 10.

In the present embodiment, as shown in fig. 2 and 3, the rotating shaft 7 is located at the horizontal side of the lock slot 2, the positioning shaft 9 is located below the lock slot 2, and the arrangement of the rotating shaft 7 and the positioning shaft 9 is compact.

When the bolt 5 is in the locking state, the axis of the rotating shaft 7 is higher than the axis of the lock shaft 8 in the lock groove 2. Under the locking state, even if electric automobile takes place acutely to rock at the in-process of traveling and leads to lock axle 8 to move relative lock base 10, thereby lead to lock axle 8 to spring bolt 5 and exert the effort, because the axle center of rotation axis 7 is higher than the axle center of lock axle 8, this effort can lead to the downward pivoted trend of spring bolt 5, locking direction pivoted trend promptly, and then improve the stability of lock axle 8 locking in lock base 10, prevent to make lock axle 8 convert into the unblock state because of spring bolt 5 upwards rotates, even under the state of jolting, locking mechanism 100 is difficult automatic unblock yet, improve the fixed reliability of battery package.

As shown in fig. 4 and 5, the latch hole 14 has an L-shaped longitudinal section. The latch hole 14 is formed at an edge of the latch groove 2 in a half-pack manner, on one hand, to facilitate the rotation of the latch between the latch hole and the latch groove to unlock or lock the battery pack, and on the other hand, to cooperate with the structure of the latch groove, so that the structure of the lock base 10 is more compact. Specifically, in this embodiment, the latch hole 14 is disposed at the top of the base body 1, the latch hole 14 includes a first space 141 extending along the horizontal direction at the top of the base body 1 and a second space 142 extending vertically and downwardly from the top of the base body 1, the rotating shaft 7 penetrates through the second space 142, and the latch 5 can enter and exit the base body 1 through the first space 141.

The rotating shaft 7 is partially inserted into the latch hole 14. The bolt 5 is connected to the base body 1 through the rotating shaft 7, and when the bolt is in an unlocking state, the bolt 5 is at least partially positioned in the bolt hole 14, so that the structure is compact; when in the locking state, the bolt 5 enters the lock slot 2 from the bolt hole 14, and locks the lock shaft 8 in the lock slot 2. In the present embodiment, the latch hole 14 and the latch groove 2 have an overlapping space, i.e., the overlapping space belongs to both the latch hole 14 and the latch groove 2, and the rotation shaft 7 is inserted into the overlapping space.

The second surface 12 is provided with a recess 3 and the rotation axis 7 is located between the recess 3 and the locking groove 2. The weight of the base body 1 can be reduced by providing the recess 3, thereby improving the cruising ability and the load capacity of the electric vehicle. And because the notch is located the back of locked groove 2, it is less to the support intensity influence of the first surface 11 that locked groove 2 belongs to, avoid influencing locking process or unblock process, satisfy simultaneously and compromise the requirement of lock base support intensity and lightweight.

The base body 1 is provided with an opening 4 communicated with the locking groove 2, the opening 4 is used for the locking shaft 8 to enter and exit the locking groove 2, and the back surfaces of two sides of the opening 4 are respectively provided with a notch 3. This makes use of as much area of the second surface 12 as possible, and opens as many recesses 3 as possible, to achieve the greatest reduction in weight of the base body 1, while avoiding communication between the recesses 3 and the locking grooves 2, and preventing excessive weakening of the strength of the base body 1.

A guide slope 15 is provided between the bottom surface of the base body 1 and the first surface 11, and the guide slope 15 is inclined from the first surface 11 to the second surface 12. The guide slope 15 can play a role of guiding during the movement of the battery pack toward the lock base 10 from bottom to top, so that the battery pack can be smoothly mounted on the electric vehicle.

The opening 4 has a guide portion 41, the guide portion 41 constituting a flare opening in a direction away from the lock groove 2. Under the guiding action of the horn mouth, the lock shaft 8 can more conveniently enter the lock groove 2, so that the positioning requirement on the lock shaft 8 is reduced when the lock shaft 8 enters the lock groove 2.

A first concave part 54 is arranged between the fixed end 51 and the contact end 53, a second concave part 55 is arranged between the contact end 53 and the rotating end 52, when the bolt 5 is in a locking state, the first concave part 54 faces the opening 4, and the second concave part 55 faces the lock shaft 8. When the bolt 5 is in the unblock state, first depressed part 54 changes the direction to in the locked groove 2 to with the inner wall shape phase-match of locked groove 2, shift out the in-process at the locked shaft 8 from the locked groove 2 and dodge the locked shaft 8, avoid interfering the motion of locked shaft 8, when the bolt 5 is in the locking state, second depressed part 55 and the locked shaft 8 that is located the locked groove 2 butt each other to the motion of restriction locked shaft 8, make locked shaft 8 by firm locking in locked groove 2.

As shown in fig. 1, i.e., fig. 6a to 6c, the locking mechanism 100 further includes an elastic restoring member 30, the elastic restoring member 30 is connected to the connecting rod 20, and the elastic restoring member 30 always applies a force to the connecting rod 20 in a direction to bring the connecting rod 20 close to the lock base 10. When the connecting rod 20 is free from external force, the connecting rod 20 abuts against the lock base 10 under the action of the elastic reset piece 30, so that the bolt 5 is always in the locking position, and the lock shaft 8 can be stably limited in the lock groove 2.

During the switching process of the lock tongue 5 between the locking state and the unlocking state, the contact end 53 and the rotating end 52 are always located on the same side of the fixed end 51, namely, on the side close to the locking position in the lock groove relative to the fixed end 51. Because contact jaw 53 and rotatory end 52 lie in the same side of stiff end 51 all the time, after getting rid of outside unblock effort, because the focus of spring bolt 5 is in the right side top of stiff end 51, under the effect of spring bolt 5 self gravity or spring reset piece, spring bolt 5 can rotate clockwise to the locking state and carry out locking once more, if rotatory end 52 or contact jaw 53 rotate to the opposite side of stiff end 51, can lead to spring bolt 5 to rotate along counter-clockwise under the effect of self gravity or spring reset piece 30, and can't switch to the locking state, lead to the locking to be out of order.

The locking mechanism 100 further comprises an elastic member 6, and the elastic member 6 acts on the lock shaft 8, so that the lock shaft 8 in the locking state is pressed and fixed in the locking position in the lock groove 2 by the elastic member 6 and the lock tongue 5. In this embodiment, the elastic element 6 may be disposed in the lock slot 2, one end of the elastic element 6 is connected to the lock base 10, and the other end is abutted to the lock shaft 8. In some other preferred embodiments, the elastic member 6 may be disposed outside the accommodating chamber. The elastic member 6 is preferably a silicone pad or a rubber pad, and may be a spring or the like.

The electric automobile of this embodiment utilizes the dismouting battery package that above-mentioned locking mechanical system 100 can be convenient, moreover because locking mechanical system 100's weight is stronger, has alleviateed electric automobile's load, therefore electric automobile can have better duration and load capacity.

Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims

1. The utility model provides a lock base locates electric automobile's bottom for lock the battery package on electric automobile, its characterized in that, lock base includes:

a base body;

the lock tongue is rotatably arranged on the base body through a rotating shaft to switch between a locking state and an unlocking state, when the lock tongue is in the locking state, the lock tongue part is positioned in the lock groove to block the lock shaft from leaving the lock groove, the rotating shaft penetrates through the base body from the first surface to a second surface opposite to the first surface, a second end part of the rotating shaft positioned on the second surface side protrudes out of the second surface, and the second end part is used for positioning the base body on a support at the bottom of an electric automobile.

2. The lock base of claim 1 wherein the second end has a threaded portion for threaded connection with the bracket.

3. The lock base of claim 1, wherein the axis of rotation is higher than the axis of the lock shaft in the lock slot when the deadbolt is in the locked state.

4. The lock base of claim 1, wherein the base body further includes a positioning shaft extending through the base body and protruding from the second surface.

5. The lock base of claim 4, wherein the positioning shaft is located below the lock slot.

6. The lock base of claim 4 wherein a line connecting the axis of the rotation shaft and the axis of the positioning shaft forms an angle with the horizontal, the angle being greater than 0 ° and less than 90 °.

7. The lock base of claim 1, wherein the base body defines a bolt aperture in communication with the lock slot such that the bolt extends from the lock slot through the bolt aperture.

8. The lock base of claim 7, wherein the rotating shaft is partially disposed through the bolt hole.

9. The lock base of claim 7, wherein the longitudinal cross-section of the bolt hole is L-shaped.

10. The lock base of claim 1, wherein the base body defines an opening in communication with the lock slot, the opening providing access for a lock shaft to the lock slot.

11. The lock base of claim 10 wherein a guide ramp is disposed between the bottom surface of the base body and the first surface, the guide ramp being inclined from the first surface in a direction toward the second surface.

12. The lock base of claim 10 wherein said opening has a pilot portion, said pilot portion forming a flare opening away from said lock slot.

13. The lock base of claim 1 wherein the height of the pivot axis projecting above the second surface is between 10% and 40% of the thickness of the base body.

14. The lock base of claim 1, wherein the second surface is provided with a notch, the rotational axis being located between the notch and the lock groove.

15. The lock base of claim 1 wherein an edge portion of said second surface defines a threaded aperture for attachment to said bracket screw.

16. The lock base of any one of claims 1 to 15, wherein the locking groove has one end serving as a locking position of the locking shaft and the other end serving as a connecting position of the rotation shaft, and the latch bolt includes a fixed end rotatably connected to the rotation shaft, a contact end extending toward the locking position of the locking shaft and adapted to abut against the locking shaft, and a rotation end extending toward the outside of the lock base and adapted to rotate around the rotation shaft under an external action.

17. The lock base of claim 16, wherein a first recess is formed between the fixed end and the contact end, a second recess is formed between the contact end and the rotation end, the locking tongue has a first recess facing an opening direction of the locking groove when the locking tongue is in a locked state, and the locking tongue has a second recess facing the lock shaft.

18. The lock base of claim 16, wherein the contact end and the rotation end are always located on the same side of the fixed end during switching of the locking bolt between the locked state and the unlocked state.

19. A locking mechanism comprising a lock base as claimed in any one of claims 1 to 18.

20. An electric vehicle comprising the lock mechanism of claim 19.