CN114084031B

CN114084031B - Lock assembly

Info

Publication number: CN114084031B
Application number: CN202111302053.5A
Authority: CN
Inventors: 黄春华; 兰志波
Original assignee: Aulton New Energy Automotive Technology Co Ltd; Shanghai Dianba New Energy Technology Co Ltd
Current assignee: Aulton New Energy Automotive Technology Co Ltd; Shanghai Dianba New Energy Technology Co Ltd
Priority date: 2017-12-29
Filing date: 2017-12-29
Publication date: 2023-05-16
Anticipated expiration: 2037-12-29
Also published as: CN113954616A; CN113910968B; CN113910969B; CN113910968A; CN109986991A; CN109986991B; CN114084031A; CN113910969A

Abstract

The invention discloses a lock assembly, which comprises a locking mechanism and an unlocking mechanism, wherein the locking mechanism comprises: the lock comprises a lock base and a lock tongue, wherein the lock tongue can rotate relative to the lock base to change between an unlocking state and a locking state, the lock tongue comprises a lock tongue body and a lock tongue expansion part, and when the lock tongue is in the locking state, the lock tongue body can prevent a lock shaft from leaving a cavity of the lock base from an opening of the lock base; and the reset component is arranged on the lock base and used for enabling the lock tongue to rotate along a locking direction so as to reset from an unlocking state to a locking state. The unlocking mechanism comprises two limiting parts, wherein one limiting part acts on the lock tongue expansion part to enable the lock tongue to rotate along the unlocking direction so as to change from a locking state to an unlocking state. The locking mechanism can provide a secondary locking or locking protection function for the battery pack, is used for preventing the battery pack from falling off when the locking of the existing device fails, and improves the safety performance. One limiting part can act on the bolt expansion part to unlock, and the whole process is rapid and efficient.

Description

Lock assembly

The present application is a divisional application of patent application with the application date of 2017, 12, 29, 201711478874.8 and the invention and creation name of a locking mechanism for battery packs, a locking assembly, a quick-change bracket assembly and an electric vehicle.

Technical Field

The present invention relates to a lock assembly.

Background

The existing battery pack mounting mode of the electric vehicle is generally divided into a fixed type and 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 movably installed, and can be taken down at any time and replaced by a new battery pack.

During the replacement of a new battery pack, locking and unlocking of the battery pack are involved. Generally, lock shafts are mounted on the left and right sides of the battery pack; the locking device is fixed on the quick-change bracket to assemble a quick-change bracket component, and the quick-change bracket component is mounted on the chassis of the electric vehicle; the locking shaft is matched with the locking device to lock the battery pack. The existing locking device only comprises one-stage locking, lacks locking protection, and once the locking fails, a battery pack is likely to fall down, so that great potential safety hazards are brought.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a lock assembly for overcoming the defects in the prior art.

The invention solves the technical problems by the following technical scheme:

a lock assembly comprising a locking mechanism and an unlocking mechanism, the locking mechanism for a battery pack, the locking mechanism comprising:

a lock base having an opening for a lock shaft mounted to the battery pack to enter the cavity, and a cavity extending from the opening;

a locking bolt rotatable relative to the lock base to change between an unlocked state and a locked state, the locking bolt comprising a fixedly connected locking bolt body and a locking bolt extension, the locking bolt extension being located outside the lock base, the locking bolt body being capable of preventing the lock shaft from exiting the cavity from the opening when the locking bolt is in the locked state; and

the reset component is arranged on the lock base, acts on the lock tongue and can elastically deform, and is used for enabling the lock tongue to rotate along a locking direction so as to reset from the unlocking state to the locking state;

the unlocking mechanism comprises two limiting parts, wherein the two limiting parts are limited with an accommodating space for accommodating the locking mechanism, the unlocking mechanism acts on the lock tongue expansion part to enable the lock tongue to rotate along an unlocking direction to change from the locking state to the unlocking state, the accommodating space is used for accommodating the lock base, one of the two limiting parts acts on the lock tongue expansion part to enable the lock tongue to rotate along the unlocking direction to change from the locking state to the unlocking state.

Preferably, the lock base has a first limiting surface, the first limiting surface is an outer wall surface of the lock base, the lock tongue expansion portion has a second limiting surface, and when the lock tongue is in the locking state, the first limiting surface abuts against the second limiting surface to prevent the lock tongue from continuing to rotate along the locking direction.

By adopting the arrangement, when the lock tongue rotates to the contact of the first limiting surface and the second limiting surface, the lock tongue does not continue to rotate and stops in a locking state.

Preferably, the bolt extension part comprises a bending part, and the bending part is positioned on the side surface of the lock base when the bolt is in a locking state.

Preferably, the bending part extends from the second limiting surface to the bottom of the lock base to be protruded.

Preferably, the bending part and the side surface of the lock base have a gap.

Preferably, the limiting part in the unlocking mechanism acts on the bending part and pushes the bending part to move upwards so as to drive the lock tongue to switch to the unlocking state.

Preferably, when the lock tongue is in the locked state, the end of the bending part is lower than the top of the lock base, and/or the end of the bending part is higher than the bottom of the lock base.

Preferably, the reset component is provided with a first spring part and a second spring part, the first spring part is connected with the lock base, and the second spring part is connected with the lock tongue.

Preferably, the restoring component is a compression spring, and the first spring part and the second spring part are two end parts of the compression spring; the lock base is provided with a first protruding part and/or a first concave part, and the first spring part is sleeved on the first protruding part and/or is positioned in the first concave part; the lock tongue is provided with a second protruding portion and/or a second concave portion, and the second spring portion is sleeved on the second protruding portion and/or is located in the second concave portion.

By adopting the arrangement, the compression spring has the advantages of convenient processing and low cost; the two ends of the compression spring can be reliably connected with the lock base and the lock tongue to prevent ejection.

Preferably, the reset component is a torsion spring, the reset component is further provided with a middle spiral part, the first spring part, the middle spiral part and the second spring part are sequentially connected, and the first spring part and the second spring part can rotate around the middle spiral part to realize elastic force change; the lock base is provided with a first spring hole, and the first spring part is embedded in the first spring hole; the spring bolt is provided with a second spring hole, and the second spring part is embedded in the second spring hole.

By adopting the arrangement, the torsion spring is utilized to realize resetting, and the first spring part and the second spring part of the torsion spring can be reliably connected with the lock base and the lock tongue to prevent the spring from being ejected.

Preferably, the reset component is a bending spring, the bending spring is composed of a reed and/or a reed wire, the first reed part is abutted against at least two non-coincident inner wall surfaces of the lock base, and the second reed part is abutted against the lock tongue.

By adopting the arrangement, the return is realized by the bending spring, and the first spring part and the second spring part of the bending spring can be reliably connected with the lock base and the lock tongue to prevent the spring from being ejected.

Preferably, a groove is formed in the top of the lock base, the groove is communicated with the cavity, and the lock tongue extends through the groove.

By adopting the arrangement, the layout of the bolt expansion part is convenient.

Preferably, the locking mechanism further comprises a centering shaft, the centering shaft is arranged on the lock base and penetrates through the lock tongue body, and the lock tongue body can rotate around the centering shaft.

Preferably, the locking mechanism further comprises an elastic component, wherein the elastic component is at least partially positioned in the cavity and is used for abutting against the lock shaft;

the elastic part comprises an elastic pad, the elastic pad is positioned in the cavity and is used for abutting against the lock shaft;

the elastic part further comprises an elastic handle and an elastic head, the elastic pad, the elastic handle and the elastic head are sequentially connected, the elastic handle penetrates through the lock base, and the wall part of the lock base is clamped between the elastic pad and the elastic head.

With the above arrangement, the elastic member prevents rigid collision of the lock shaft and the lock base, and the entire elastic member can be stably mounted on the lock base.

Preferably, the opening is a flare.

By adopting the arrangement, the lock shaft is convenient to enter the cavity.

On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the invention.

The invention has the positive progress effects that: the invention discloses a lock assembly, which comprises a locking mechanism and an unlocking mechanism. The locking mechanism is provided with the reset part, so that the lock tongue is convenient to reset from the unlocking state to the locking state, the battery pack is convenient to install and lock, the lock tongue cannot be easily changed into the unlocking state under the action of the reset part, and the locking is more reliable; the lock tongue expansion part positioned outside the lock base is arranged, so that the rotation of the lock tongue body can be realized by acting on the lock tongue expansion part, and the lock is convenient to unlock; the locking mechanism can provide a secondary locking or locking protection function for the battery pack, is used for preventing the battery pack from falling off when the locking of the existing device fails, and improves the safety performance. In the process of the adaptation of the unlocking mechanism and the locking mechanism, one limiting part can act on the bolt expansion part to unlock, and the whole process is rapid and efficient.

Drawings

Fig. 1 is a schematic perspective view of a locking mechanism according to embodiment 1 of the present invention.

Fig. 2 is a schematic front view of a locking mechanism according to embodiment 1 of the present invention.

Fig. 3 is a schematic top view of a locking mechanism according to embodiment 1 of the present invention.

Fig. 4 is a schematic cross-sectional view of a locking mechanism of embodiment 1 of the present invention.

Fig. 5 is a schematic cross-sectional view of a lock base of embodiment 1 of the present invention.

Fig. 6 is a schematic perspective view of a latch bolt according to embodiment 1 of the present invention.

Fig. 7a to 7e show a lock shaft mounting process of embodiment 1 of the present invention.

Fig. 8 is a schematic perspective view of the locking mechanism according to embodiment 2 of the present invention under an angle.

Fig. 9 is a perspective view showing the reset means at the same angle as fig. 8.

Fig. 10 is a perspective view of the locking mechanism of embodiment 2 of the present invention at another angle.

Fig. 11 is a schematic rear view of the locking mechanism of embodiment 2 of the present invention.

Fig. 12 is a perspective view of a locking mechanism according to embodiment 3 of the present invention.

Fig. 13 is a schematic cross-sectional view of a locking mechanism of embodiment 3 of the present invention.

Fig. 14 is a perspective view of a locking mechanism of embodiment 4 of the present invention.

Fig. 15 is a schematic cross-sectional view of a locking mechanism of embodiment 4 of the present invention.

Fig. 16 is a perspective view of a lock assembly according to embodiment 5 of the present invention.

Fig. 17 is a partial schematic view of a quick-change bracket assembly according to embodiment 6 of the present invention.

Fig. 18 is another partial schematic view of the quick-change bracket assembly of embodiment 6 of the present invention, wherein a portion thereof overlaps fig. 17.

Reference numerals illustrate:

100: locking mechanism

110: lock base

111: an opening

112: cavity cavity

113: first limiting surface

114: first concave part

115: groove

116: centering hole

117: positioning hole

118: mounting hole

119: first spring hole

120: spring bolt

121: spring bolt body

122: spring bolt expansion part

1221: bending part

123: second limiting surface

124: second protruding part

125: second spring hole

130: reset component

131: first spring part

132: second spring part

133: middle spiral part

140: centering shaft

150: positioning pin

160: elastic component

161: elastic cushion

162: elastic handle

163: elastic head

200: lock shaft

300: unlocking mechanism

310: limiting part

320: accommodation space

40: quick-change bracket assembly

400: one-stage locking mechanism

410: primary lock base

411: first-stage opening

412: primary cavity

420: primary spring bolt

430: lock connecting rod

500: supporting device

600: quick-change bracket

Detailed Description

The invention is further illustrated by means of the following examples, which are not intended to limit the scope of the invention.

Example 1

As shown in fig. 1-4, the present embodiment discloses a locking mechanism 100 for a battery pack. The locking mechanism 100 includes: lock base 110, locking bolt 120, and reset device 130. In which, as shown in fig. 5-6 and 7a-7e, the lock base 110 is provided with an opening 111 and a cavity 112 extending from the opening 111, the opening 111 is used for the lock shaft 200 mounted on the battery pack to enter the cavity 112. The locking bolt 120 is rotatable relative to the lock base 110 to change between an unlocked state and a locked state. The lock tongue 120 includes a lock tongue body 121 and a lock tongue extension 122 fixedly connected, and the lock tongue extension 122 is located outside the lock base 110, and when the lock tongue 120 is in a locked state, the lock tongue body 121 can prevent the lock shaft 200 from leaving the cavity 112 from the opening 111. The reset component 130 is disposed on the lock base 110, and the reset component 130 acts on the lock tongue 120, where the reset component 130 can be elastically deformed, and the reset component 130 is used to rotate the lock tongue 120 along a locking direction to reset from an unlocked state to a locked state.

The reset part 130 is arranged to facilitate the reset of the lock tongue 120 from the unlocking state to the locking state, so that the battery pack is convenient to install and lock, the lock tongue 120 cannot be easily changed into the unlocking state under the action of the reset part 130, and the locking is more reliable; the lock tongue expansion part 122 positioned outside the lock base 110 is arranged, so that the rotation of the lock tongue body 121 can be realized by acting on the lock tongue expansion part 122, and the unlocking is convenient; the locking mechanism 100 can provide a secondary locking or locking protection function for the battery pack, and is used for preventing the battery pack from falling down when the locking of the existing device fails, so that the safety performance is improved.

As shown in fig. 7a, the tongue extension 122 includes a bent portion 1221, and when the tongue 120 is in the locked state, the bent portion 1221 is located at a side surface of the lock base 110. The bending part 1221 is used for being matched with the unlocking mechanism, and the bending part 1221 is arranged on the side surface of the lock base 110, so that the mutual interference between the bending part 1221 and the lock base 110 in the unlocking process can be reduced, and the unlocking reliability is improved.

Further, as shown in fig. 7a, the bent portion 1221 has a gap with the side surface of the lock base 110. Since the lock tongue 120 rotates relative to the lock base 110, that is, the bending part 1221 rotates relative to the lock base 110, a gap is provided between the bending part 1221 and the side surface of the lock base 110, so that on one hand, a sufficient rotation space is provided for the bending part 1221, and the bending part 1221 is prevented from being blocked by the lock base 110 during the rotation process and cannot be switched to the unlocking position. Another advantage is that friction between the bending part 1221 and the side surface of the lock base 110 is prevented, so that the smoothness of rotation of the bending part 1221 is ensured, and the service lives of the bending part 1221 and the lock base 110 are prolonged.

As shown in fig. 7a, in the present embodiment, when the latch bolt 120 is in the locked state, the end of the bent portion 1221 is lower than the top of the lock base 110, and the end of the bent portion 1221 is higher than the bottom of the Yu Suo base 110. The end of the bending part 1221 refers to the lower end of the bending part 1221, that is, the end near the bottom of the lock base 110. Because the locking mechanism 100 switches from the locked state to the unlocked state, the lock tongue 120 rotates towards the top of the lock base 110, and the end part of the lock tongue bending part 1221 is lower than the top of the lock base 110, so that the rotation angle of the lock tongue 120 can be increased, and the unlocking of the battery pack caused by certain rotation of the lock tongue 120 under the condition of error touch and other reasons is avoided, and the reliability of the locking of the battery pack is improved. The end of the bending part 1221 is higher than the bottom of the base 110 of Yu Suo, so that the possibility of rotation caused by the false touch of the latch 120 can be reduced, and the reliability of locking the battery pack can be further improved.

The bending part 1221 in the present embodiment simultaneously satisfies that the end of the bending part 1221 is lower than the top of the lock base 110, and the end of the bending part 1221 is higher than the bottom of the Yu Suo base 110. In other alternative embodiments, the provision of the bent portion 1221 satisfies one of the above two, and also enables improvement in the reliability of the locking of the battery pack, that is, the end of the bent portion 1221 is lower than the top of the lock base 110 or the end of the bent portion 1221 is higher than the bottom of the base 110 of Yu Suo.

As shown in fig. 7a, the end face of the bent portion 1221 has an arc face. Specifically, the lower terminal surface of kink 1221 is bellied arc surface downwards, and this structure can reduce the stress that kink 1221 received when cooperating with release mechanism, reduces the damage, improves life.

The opening 111 is a flare. Facilitating entry of lock shaft 200 into cavity 112.

In this embodiment, the lock base 110 has a first limiting surface 113 (labeled in fig. 5), and the first limiting surface 113 is an outer wall surface of the lock base 110. Specifically, an upper outer wall surface of the lock base 110. The tongue extension 122 has a second stop surface 123 (shown in fig. 6). The second limiting surface 123 is specifically a lower outer surface of the latch 120. As shown in fig. 7a, the bending part 1221 extends from the second limiting surface 123 toward the bottom of the lock base 110. As shown in fig. 7a or 7e, when the latch 120 is in the locking state, the first limiting surface 113 abuts against the second limiting surface 123 to prevent the latch 120 from rotating continuously along the locking direction. In fig. 7a-7e, the locking direction is clockwise. When the latch 120 rotates in the locking direction until the first limiting surface 113 contacts the second limiting surface 123, the latch 120 does not rotate any more and stops in the locked state. In an alternative embodiment, other parts of the lock base are contacted with other parts of the lock tongue, so that the lock tongue is prevented from rotating continuously.

As shown in fig. 5, the top of the lock base 110 is provided with a groove 115, and the groove 115 communicates with the cavity 112. Referring to fig. 4, the locking tongue 120 extends through the groove 115. Facilitating the layout of the tongue extension 122.

As shown in fig. 1-5, locking mechanism 100 further includes a centering shaft 140, centering shaft 140 is disposed on lock base 110 and centering shaft 140 is disposed through locking bolt body 121, and locking bolt body 121 is rotatable about centering shaft 140. Specifically, the centering shaft 140 is disposed through the centering hole 116 of the lock base 110. Meanwhile, the lock base 110 is provided with a positioning hole 117, the locking mechanism 100 further comprises a positioning pin 150, the positioning pin 150 is partially located outside the positioning hole 117, and the positioning pin 150 is in interference fit with the positioning hole 117. The locating pin 150 may be used for locating when the locking mechanism 100 is mounted to the quick change bracket. In this embodiment, the centering shaft 140 is also in interference fit with the centering hole 116, and the same part is located outside the lock base 110 to perform positioning function. Further, the lock base 110 is provided with a mounting hole 118, and the mounting hole 118 is a screw hole. Threaded fasteners may be passed through the mounting holes 118 to mount the locking mechanism 100 to the quick-change bracket.

The locking mechanism 100 further includes an elastic member 160. Referring to fig. 4, the resilient member 160 is at least partially disposed within the cavity 112, and the resilient member 160 is configured to abut the lock shaft 200. Specifically, the elastic member 160 includes an elastic pad 161, the elastic pad 161 is located in the cavity 112, and the elastic pad 161 is used for abutting against the lock shaft 200. The elastic member 160 prevents the lock shaft 200 from rigidly striking the lock base 110. The resilient member 160 further includes a resilient handle 162 and a resilient head 163. The elastic pad 161, the elastic handle 162 and the elastic head 163 are sequentially connected, the elastic handle 162 is inserted into the lock base 110, and the wall portion of the lock base 110 is clamped between the elastic pad 161 and the elastic head 163. So that the entire elastic member 160 can be stably mounted to the lock base 110. The elastic member 160 is preferably made of rubber.

Next, referring to fig. 1 to 6, the reset device 130 of the present embodiment will be described in detail:

the return member 130 has a first spring portion 131 and a second spring portion 132. The first spring portion 131 is connected to the lock base 110, and the second spring portion 132 is connected to the tongue 120. In this embodiment, the return member 130 is a compression spring. The first spring portion 131 and the second spring portion 132 are both ends of a compression spring. The compression spring has the advantages of convenient processing and low cost.

The lock base 110 is provided with a first concave part 114, and the first spring part 131 is positioned in the first concave part 114; the bolt 120 is provided with a second protruding portion 124, and the second spring portion 132 is sleeved on the second protruding portion 124. Both ends of the compression spring can be reliably connected to the lock base 110 and the locking tongue 120, preventing ejection. In an alternative embodiment, it may be: the lock base is provided with a first protruding part, the first spring part is sleeved on the first protruding part, the lock tongue is provided with a second protruding part, and the second spring part is sleeved on the second protruding part; or the lock base is provided with a first bulge, the first spring part is sleeved on the first bulge, the lock tongue is provided with a second concave part, and the second spring part is positioned in the second concave part; or the lock base is provided with a first concave part, and the first spring part is positioned in the first concave part; the spring bolt is provided with a second concave part, and the second spring part is positioned in the second concave part; similar effects can be achieved.

Fig. 7a to 7e show the installation process of the lock shaft 200 of embodiment 1 of the present invention. In fig. 7a, the bolt 120 is in the locked state, but the lock shaft 200 has not yet entered the cavity 112. In fig. 7c, the locking bolt 120 is in or near an unlocked state and the lock shaft 200 has partially entered the cavity 112. In fig. 7e, the locking bolt 120 is in the locked state and the lock shaft 200 has been fully positioned within the cavity 112, with the lock shaft 200 in place.

The following description describes the principle of operation of the locking mechanism 100 in conjunction with the accompanying drawings:

the locking process (i.e., the installation process of fig. 7a to 7 e), the latch bolt 120 is changed from the locked state to the unlocked state and then to the locked state): from fig. 7a to 7c, the lock shaft 200 moves upwards under the action of external force, enters the cavity 112 through the opening 111, and the lock shaft 200 acts on the lock tongue body 121 to rotate the lock tongue 120 around the counterclockwise direction; the latch 120 acts on the second spring portion 132 of the reset member 130, so that the elastic force of the reset member 130 is changed; 7 c-7 e, after the bolt 120 is rotated to a certain angle, a channel is formed in the cavity 112 for the lock shaft 200 to pass through, and the lock shaft 200 can move from left to right; until the lock shaft 200 is no longer in contact with the latch bolt body 121, the latch bolt 120 rotates clockwise under the action of the reset member 130, and is reset to the locked state.

And (3) unlocking: applying an upward force to the tongue extension 122, causing the tongue 120 to rotate in a counterclockwise direction; the latch 120 acts on the second spring portion 132 of the reset member 130, so that the elastic force of the reset member 130 is changed; after the lock tongue 120 rotates to a certain angle, a channel in the cavity 112 for the lock shaft 200 to pass through is formed; the lock shaft 200 may move from right to left and then down through the opening 111 and out of the locking mechanism 100.

Example 2

As shown in fig. 8 to 11, the locking mechanism 100 of the present embodiment is similar to that of embodiment 1, except for the structure of the reset member 130 and the installation position of the reset member 130; at the same time, the structure of the latch 120 is modified accordingly, and the reset device 130 is avoided.

In this embodiment, the reset member 130 is a torsion spring. The reset member 130 further has an intermediate screw portion 133, and the first spring portion 131, the intermediate screw portion 133, and the second spring portion 132 are connected in this order. The first spring portion 131 and the second spring portion 132 are each rotatable about the intermediate screw portion 133 to achieve a spring force variation. The lock base 110 is provided with a first spring hole 119, and the first spring portion 131 is fitted in the first spring hole 119. The bolt 120 is provided with a second spring hole 125, and the second spring portion 132 is embedded in the second spring hole 125.

The latch bolt 120 is provided with an arc portion to be matched with the middle screw portion 133.

The return is achieved by the torsion spring, and the first spring portion 131 and the second spring portion 132 of the torsion spring can be reliably connected to the lock base 110 and the latch 120, preventing the ejection.

Example 3

The locking mechanism 100 of the present embodiment is similar to that of embodiment 1, except for the structure of the reset member 130 and the installation position of the reset member 130.

As shown in fig. 12-13, the return member 130 is a bending spring that is formed of a leaf spring. In this embodiment, the first spring portion 131 abuts against at least two non-overlapping inner wall surfaces of the lock base 110, and the second spring portion 132 abuts against the lock tongue 120. In an alternative embodiment, the first spring portion may only abut against one inner wall surface of the lock base, and it is only conceivable that the effect is not as good as that of abutting against at least two non-overlapping inner wall surfaces.

As shown in fig. 13, the first spring portion 131 is an L-shaped spring portion, the second spring portion 132 is an arc-shaped spring portion, and the middle is connected to a U-shaped spring portion by a flat leaf spring portion.

The return is achieved by the bending spring, and the first spring portion 131 and the second spring portion 132 of the bending spring can be reliably connected to the lock base 110 and the latch 120, preventing ejection.

Example 4

As shown in fig. 14-15, the locking mechanism 100 of the present embodiment is similar to that of embodiment 3, and the reset member 130 is still a bending spring, except that: in this embodiment, the return member 130 is constituted by a spring wire.

In an alternative embodiment, the shape of the bending spring may be substantially similar to that of embodiment 3 or embodiment 4, but the bending spring may be partially constituted by a reed and the other portion by a spring wire, and the same effect can be obtained. In alternative embodiments, the shape of the bending spring may be different from that shown in the figures, and any bending spring capable of undergoing the desired deformation may be used.

Example 5

The embodiment discloses a lock assembly, quick change support subassembly and electric motor car.

As shown in fig. 16, the lock assembly includes: locking mechanism 100 and unlocking mechanism 300 shown in embodiment 1. The unlocking mechanism 300 acts on the tongue extension 122 to rotate the tongue 120 in an unlocking direction to change from the locked state to the unlocked state. The unlocking direction is opposite to the locking direction, and the unlocking direction is a counterclockwise direction.

Specifically, the unlocking mechanism 300 includes two limiting portions 310, the two limiting portions 310 define an accommodating space 320 for accommodating the lock base 110, and one limiting portion 310 of the two limiting portions 310 acts on the lock tongue expansion portion 122 to rotate the lock tongue 120 in the unlocking direction to change from the locked state to the unlocked state. In the process of adapting the unlocking mechanism 300 to the locking mechanism 100, one limiting part 310 can act on the lock tongue expansion part 122 to unlock, and the whole process is rapid and efficient; it is not necessary to unlock the lock by other parts or by other actions after the lock release mechanism 300 is mated with the lock mechanism 100.

As shown in fig. 16, the limiting portion 210 in the unlocking mechanism 300 acts on the bending portion 1221 and pushes the bending portion 1221 to move upwards, so as to drive the latch to switch to the unlocking state.

The quick-change bracket assembly includes a quick-change bracket (not shown) and the locking mechanism 100 described in embodiment 1. The locking mechanism 100 is fixedly arranged on the quick-change bracket. The quick-change bracket is generally a frame-shaped structure, and the locking mechanism 100 is fixed in the frame of the frame-shaped structure. The quick-change bracket may also be a plate-like structure, and the locking mechanism 100 may be fixed to a lower surface of the plate-like structure. A locking mechanism 100 is provided on each of the left and right sides of the quick-change bracket. In the quick-change bracket assembly, the locking mechanism 100 can be used as a secondary lock and a primary lock in a cooperative manner; the primary lock can refer to a locking device disclosed in Chinese patent application publication No. CN 106427514A.

The electric vehicle includes a battery pack (not shown), a quick-change bracket assembly, and a chassis (not shown). The battery pack is mounted to the quick-change bracket assembly and a lock shaft 200 mounted to the battery pack is positioned within the cavity 112. The quick-change bracket component is fixed on the chassis.

In other embodiments, the locking mechanism 100 described in embodiment 1 of the lock assembly, the quick-change bracket assembly, and the electric vehicle may be replaced with the locking mechanism 100 described in embodiment 2, 3, or 4.

Example 6

As shown in fig. 17 and 18, the present embodiment discloses a quick-change bracket assembly 40.

The quick-change bracket assembly 40 includes a quick-change bracket 600, the locking mechanism 100 described in embodiment 1 (as a secondary locking mechanism), and a primary locking mechanism 400. The locking mechanism 100 is fixedly arranged on the quick-change bracket 600. Primary locking mechanism 400 includes a lock link 430, at least one primary locking bolt 420, and at least one primary lock base 410. The primary lock base 410 is fixedly arranged on the quick-change bracket 600. In this embodiment, 3 primary lock bases 410 and 3 primary lock bolts 420 are respectively disposed on two sides in the frame of the quick-change bracket 600. Fig. 17 and 18 are partial schematic views of one side thereof.

The primary lock base 410 is provided with a primary opening 411 and a primary cavity 412 extending from the primary opening 411, the primary opening 411 being for a primary lock shaft (of the same structure as or similar to the lock shaft 200) mounted to the battery pack to enter the primary cavity 412. The lock link 430 is rotatably connected with at least one primary lock tongue 420, and is configured to drive the primary lock tongue 420 to rotate under an external force, so that the primary lock tongue 420 can rotate relative to the primary lock base 410 to change between a primary unlocked state and a primary locked state. When the primary lock tongue 420 is in the primary locking state, the primary lock tongue 420 can prevent the primary lock shaft from leaving the primary cavity 412 through the primary opening 411. The "primary lock state" refers to a locked state of the primary lock mechanism 400; the "one-stage unlock state" refers to a state of unlocking the one-stage lock mechanism 400.

The primary locking mechanism 400 and the locking mechanism 100 are provided on the same side of the quick-change bracket 600. I.e., the side provided with the primary locking mechanism 400 is also provided with the locking mechanism 100; if one-step locking mechanism 400 is provided on both sides, then locking mechanism 100 is provided on both sides. In this embodiment, both sides in the frame of the quick-change bracket 600, that is, both inner side surfaces facing the battery pack are provided with the primary locking mechanism 400, and also provided with the locking mechanism 100.

In addition, the quick-change bracket assembly 40 further includes a plurality of supporting devices 500, wherein the supporting devices 500 are disposed on a side of the quick-change bracket 600 facing the battery pack, and are used for providing a plurality of supporting points for supporting the battery pack. The support device 500 is also located on the same side as the primary lock mechanism 400 and the lock mechanism 100. The primary locking mechanism 400 of fig. 17 and 18 is shown in coincidence, and fig. 17 and 18 show the support device 500 in a different position.

In this embodiment, the supporting device 500 is similar to the lock base 110 in structure, and has no locking function, and serves as a supporting platform for the battery pack. In other embodiments, other similar support mechanisms with support platforms may be suitable. The number of support devices 500 may be adjusted according to the weight of the actual battery pack, preferably to an average weight of not more than 25KG per support device 500.

The supporting means 500 is provided with a supporting groove, the lower surface of which is located on the same plane as the lower surface of the cavity 112 and the lower surface of the primary cavity 412. The lower surface of the supporting groove, the lower surface of the cavity 112 and the lower surface of the primary cavity 412 are all surfaces close to the ground in use, and bear the supporting functions of the special locking shaft, the locking shaft 200 and the primary locking shaft for supporting the battery pack, and the three are located on the same plane, so that the battery pack can move stably.

The primary lock mechanism 400 is substantially synchronized with the unlock and lock processes of the lock mechanism 100 in a similar manner.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and 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 principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.

Claims

1. A lock assembly comprising a locking mechanism and an unlocking mechanism, wherein the locking mechanism is used for a battery pack, and the locking mechanism comprises:

2. The lock assembly of claim 1, wherein the lock base has a first limiting surface, the first limiting surface being an outer wall surface of the lock base, the tongue extension having a second limiting surface, the first limiting surface abutting the second limiting surface to prevent the tongue from continuing to rotate in the locking direction when the tongue is in the locked state.

3. The lock assembly of claim 2, wherein the tongue extension includes a bend located on a side of the lock base when the tongue is in the locked state.

4. A lock assembly according to claim 3, wherein the fold extends from the second stop surface towards the bottom of the lock base.

5. A lock assembly according to claim 3, wherein the bend has a gap with a side of the lock base.

6. The lock assembly according to claim 3, wherein the limiting part in the unlocking mechanism acts on the bending part and pushes the bending part to move upwards so as to drive the lock tongue to switch to the unlocking state.

7. A lock assembly according to claim 3, wherein the end of the bend is below the top of the lock base and/or the end of the bend is above the bottom of the lock base when the bolt is in the locked condition.

8. The lock assembly of claim 1, wherein the return member has a first spring portion coupled to the lock base and a second spring portion coupled to the locking bolt.

9. The lock assembly of claim 8, wherein the return member is a compression spring, and the first and second spring portions are opposite ends of the compression spring; the lock base is provided with a first protruding part and/or a first concave part, and the first spring part is sleeved on the first protruding part and/or is positioned in the first concave part; the lock tongue is provided with a second protruding portion and/or a second concave portion, and the second spring portion is sleeved on the second protruding portion and/or is located in the second concave portion.

10. The lock assembly of claim 8, wherein the return member is a torsion spring, the return member further having an intermediate helical portion, the first spring portion, the intermediate helical portion, and the second spring portion being connected in sequence, each of the first spring portion and the second spring portion being rotatable about the intermediate helical portion to effect a change in spring force; the lock base is provided with a first spring hole, and the first spring part is embedded in the first spring hole; the spring bolt is provided with a second spring hole, and the second spring part is embedded in the second spring hole.

11. The lock assembly of claim 8, wherein the return member is a bent spring comprising a leaf spring and/or a spring wire, the first spring portion abutting at least two non-overlapping inner wall surfaces of the lock base, the second spring portion abutting the locking bolt.

12. The lock assembly of claim 1, wherein a top of the lock base is provided with a recess, the recess being in communication with the cavity, the locking bolt extending through the recess.

13. The lock assembly of claim 1, wherein the locking mechanism further comprises a centering shaft disposed on the lock base and penetrating the deadbolt body, the deadbolt body being rotatable about the centering shaft.

14. The lock assembly of claim 1, wherein the locking mechanism further comprises a resilient member at least partially within the cavity, the resilient member adapted to abut the lock shaft;

15. The lock assembly as claimed in any one of claims 1 to 14, wherein the opening is a flare.