CN111391640A - Locking mechanism, locking subassembly, quick change bracket component and electric automobile - Google Patents
Locking mechanism, locking subassembly, quick change bracket component and electric automobile Download PDFInfo
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- CN111391640A CN111391640A CN201811647258.5A CN201811647258A CN111391640A CN 111391640 A CN111391640 A CN 111391640A CN 201811647258 A CN201811647258 A CN 201811647258A CN 111391640 A CN111391640 A CN 111391640A
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- 230000002349 favourable effect Effects 0.000 abstract description 11
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- 238000012986 modification Methods 0.000 description 2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/66—Arrangements of batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
- B60K2001/0455—Removal or replacement of the energy storages
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lock And Its Accessories (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a locking mechanism, a locking assembly, a quick-change bracket assembly and an electric automobile. The locking mechanism includes: the lock base is provided with an opening and a cavity extending from the opening, and the opening is used for allowing a lock shaft arranged on the battery pack to enter the cavity; the spring bolt can rotate for the lock base in order to change between unblock state and locking state, and the spring bolt is used for having first locking portion and second locking portion in proper order along the locking direction towards one side of lock axle, and first locking portion is used for restricting to lock axle auto-lock base and drops, and when the spring bolt was in the locking state, second locking portion was used for restricting the lock axle and moves towards first locking portion to prevent the lock axle from leaving the cavity from the opening. First locking portion carries out thick spacing to the lock axle, and second locking portion carries out essence spacing to the lock axle, can carry out the locking to the lock axle comparatively reliably through the cooperation of first locking portion and second locking portion, has comparatively showing the stability that has improved the locking, and then is favorable to improving electric automobile's the reliability of changing the electricity.
Description
Technical Field
The invention relates to the field of electric automobiles, in particular to a locking mechanism, a locking assembly, a quick-change bracket assembly and an electric automobile.
Background
The conventional battery pack of the electric vehicle is generally installed 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 movably mounted, and the battery pack can be taken down at any time and replaced by a new battery pack.
Locking and unlocking of the battery pack is involved in the process of replacing a new battery pack. Generally, lock shafts are installed on the left and right sides of the battery pack; the locking mechanism is fixed on the quick-change bracket to assemble a quick-change bracket assembly, and the quick-change bracket assembly is installed on a chassis of the electric automobile; the locking shaft is matched with the locking mechanism to realize the locking of the battery pack. However, the conventional lock mechanism generally includes only one lock portion in the lock direction, and therefore, the lock reliability is unstable, and it is necessary to detect the lock reliability by means of another detection device or the like.
Disclosure of Invention
The invention aims to overcome the defect that a locking mechanism in the prior art is unstable in locking reliability, and provides a locking mechanism, a locking assembly, a quick-change bracket assembly and an electric vehicle for a battery pack.
The invention solves the technical problems through the following technical scheme:
a locking mechanism for a battery pack, comprising:
the lock base is provided with an opening and a cavity extending from the opening, and the opening is used for allowing a lock shaft mounted on the battery pack to enter the cavity;
the spring bolt, the spring bolt can for lock base rotates in order to change between unblock state and locking state, the spring bolt is used for towards one side of lock axle has first locking portion and second locking portion in proper order along the locking direction, first locking portion is used for restricting the lock axle certainly drop on the lock base, works as the spring bolt is in when the locking state, second locking portion is used for restricting the lock axle orientation first locking portion moves, in order to prevent the lock axle follow the opening leaves the cavity.
In this scheme, first locking portion on the spring bolt carries out thick spacing to the lock axle, and second locking portion carries out essence spacing to the lock axle, can carry out the locking to the lock axle comparatively reliably through the cooperation of first locking portion and second locking portion, has comparatively showing the stability that has improved the locking.
Preferably, the first locking portion and the second locking portion are both arc structures matched with the shape of the lock shaft, so that: when the lock shaft is located when the first locking part, the lock shaft is attached to the locking part, and when the lock tongue is in the locking state, the lock shaft is attached to the two locking parts.
In this scheme, the simple structure of first locking portion and second locking portion, processing cost is lower, and the space that just occupies is less. In addition, the first locking part, the second locking part and the lock shaft are matched in shape, and the locking reliability is improved.
Preferably, the lock tongue is a rotation center with respect to a rotation center of the lock base, a horizontal distance between an arc center of the first locking portion and the rotation center is a first distance, and a horizontal distance between an arc center of the second locking portion and the rotation center is a second distance, and the second distance is greater than the first distance.
In this scheme, second locking portion and first locking portion interval setting in the locking direction, that is to say, first locking portion and second locking portion are in different positions on the locking route respectively, and the second locking portion is established and is gone on first locking portion has played thick spacing (half locking) to the lock axle on the basis, is favorable to realizing the accurate spacing (full locking) to the lock axle, and then is favorable to improving the reliability of locking.
Preferably, when the lock tongue is in the locked state, the arc center of the second locking portion is located below the rotation center.
In the scheme, the rotation center is higher than the arc center of the second locking part, so that the locking shaft is easy to lock more firmly along the separation direction (corresponding to the unlocking direction), and the locking reliability is improved.
Preferably, the first locking portion and the second locking portion are adjacent.
In the scheme, the first locking part and the second locking part are adjacent, so that on one hand, the occupied space of the lock tongue is reduced conveniently; on the other hand, the locking reliability is improved.
Preferably, the bolt comprises a bolt body and a bolt expanding part, the first locking part and the second locking part are arranged on the bolt body, and the bolt expanding part is positioned outside the lock base;
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.
In this scheme, the first spacing face and the spacing face looks butt of second can prevent that the spring bolt from continuing to rotate along the locking direction, and both be favorable to protecting the lock axle, be favorable to realizing the reliability locking to the lock axle again, can balance because of the moment of spring bolt for the rotatory centre of rotation skew production of lock base.
Preferably, the locking mechanism further comprises:
the elastic component is arranged in the cavity, and when the lock tongue is in the locking state, the lock shaft abuts against the position between the second locking part and the elastic component.
In the scheme, on one hand, the elastic component is in elastic contact with the lock shaft, so that the lock shaft is protected; on the other hand, in the locking process, after the lock shaft passes over the first locking part and is attached to the second locking part, the lock shaft can continuously move towards the elastic component (along the positive direction of the X axis), and then under the action of the elastic component and the external force, the lock shaft moves in the reverse direction (along the negative direction of the X axis) until the lock shaft is attached to the second locking part again, so that complete locking is achieved.
Preferably, the locking mechanism further comprises:
the reset component is arranged on the lock base and acts on the lock tongue, the reset component can elastically deform, and the reset component is used for enabling the lock tongue to rotate in the locking direction to reset from the unlocking state to the locking state.
Preferably, the reset member has a first spring portion and a second spring portion, the first spring portion is connected to the lock base, and the second spring portion is connected to the latch bolt.
Preferably, the first spring part is hinged to the lock base, and the second spring part is hinged to the latch bolt.
Preferably, the reset component is a tension spring, a torsion spring or a compression spring.
Preferably, the positions of the first locking portion and the second locking portion, which are used for removing the first locking portion and the second locking portion, on one side of the lock tongue facing the lock shaft, and the avoidance groove are formed in one side of the lock tongue facing away from the lock shaft.
In this scheme, dodge the groove and can dodge the spring bolt and be in the interference of motion process with lock axle, lock base, be favorable to improving the reliability of locking.
The invention also provides a locking assembly, which is characterized by comprising:
the above-described locking mechanism;
an unlocking mechanism acting on the bolt to cause the bolt to rotate in an unlocking direction to change from the locked state to the unlocked state, the unlocking direction being opposite to the locking direction.
Preferably, the unlocking mechanism includes a force application handle connected to the bolt.
Preferably, the lock tongue is provided with a connecting hole, the force application handle penetrates through the connecting hole, and the force application handle is rotatably connected to the lock tongue through the connecting hole.
The invention also provides a quick-change bracket assembly which is characterized by comprising a quick-change bracket and the locking mechanism, wherein the locking mechanism is fixedly arranged on the quick-change bracket.
The invention also provides an electric automobile which is characterized by comprising a battery pack and the quick-change bracket assembly, wherein the battery pack is arranged on the quick-change bracket assembly, and a lock shaft arranged on the battery pack is positioned in the cavity.
In the scheme, on the basis of being favorable for improving the locking reliability and stability of the locking mechanism to the lock shaft, the battery replacement reliability of the electric automobile is also favorable for being improved.
On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.
The positive progress effects of the invention are as follows:
first locking portion on the spring bolt carries out thick spacing to the lock axle, and second locking portion carries out essence spacing to the lock axle, can carry out the locking to the lock axle comparatively reliably through the cooperation of first locking portion and second locking portion, has comparatively showing the stability that has improved the locking, and then also is favorable to improving electric automobile's the reliability of trading.
Drawings
Fig. 1 is a schematic structural diagram of a lock tongue in a locking mechanism according to a preferred embodiment of the invention.
FIGS. 2-5 illustrate the locking mechanism of a preferred embodiment of the present invention to lock the lock shaft, wherein FIG. 2 illustrates the lock shaft moving along the opening of the lock base in the Z-axis direction; FIG. 3 shows the lock shaft moving in a forward direction along the X-axis after entering the cavity from the opening; fig. 4 shows the latch spindle mated with the first detent of the deadbolt; fig. 5 shows the bolt in the locked state and the lock shaft fitted with the second locking portion of the bolt.
Fig. 6 is a schematic cross-sectional view of a locking mechanism according to a preferred embodiment of the invention.
Fig. 7-10 illustrate the process of unlocking the lock shaft by the locking mechanism according to a preferred embodiment of the present invention, wherein fig. 7 illustrates the lock shaft moving in the forward direction along the X-axis under the action of external force, and the lock shaft is disengaged from the second locking portion of the latch bolt; fig. 8 shows that the unlocking mechanism rotates the lock tongue counterclockwise under the action of external force, the lock shaft is disengaged from the first locking part of the lock tongue, and the lock shaft moves along the negative direction of the X axis; FIG. 9 shows the latch spindle moved to an extreme X-axis negative position in the cavity (i.e., the side walls of the cavity); fig. 10 shows that the external force on the unlocking mechanism is removed, the latch bolt rotates clockwise, the lock shaft moves in the negative direction along the Z-axis, and the latch bolt is reset.
Description of reference numerals:
10 lock base
101 opening
102 cavity
103 second limit surface
20 bolt
201 first locking part
202 second locking part
203 pinhole
204 lock tongue body
205 bolt extension part
206 first limit surface
207 tension spring hole
208 escape slot
209 connecting hole
30 lock shaft
40 resilient member
50 reset device
60 force application handle
K gap
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
The present embodiment discloses a locking mechanism for a battery pack to lock and unlock a lock shaft mounted on a side wall of the battery pack. As shown in fig. 1 to 10, the locking mechanism includes a lock base 10 and a locking tongue 20, wherein the lock base 10 has an opening 101 and a cavity 102 extending from the opening 101, and the opening 101 is used for allowing a lock shaft 30 mounted on a battery pack to enter the cavity 102. The latch bolt 20 is capable of rotating relative to the lock base 10 to change between an unlocked state and a locked state, the latch bolt 20 is configured to sequentially have a first locking portion 201 and a second locking portion 202 in a locking direction toward one side of the lock shaft 30, the first locking portion 201 is configured to limit the lock shaft 30 from falling off from the lock base 10, and when the latch bolt 20 is in the locked state, the second locking portion 202 is configured to limit the lock shaft 30 from moving toward the first locking portion 201 to prevent the lock shaft 30 from leaving the cavity 102 from the opening 101.
In this embodiment, the first locking part 201 on the tongue 20 roughly limits the lock shaft 30, the second locking part 202 precisely limits the lock shaft 30, and the lock shaft 30 can be reliably locked by the cooperation of the first locking part 201 and the second locking part 202, so that the stability of locking is remarkably improved.
Further, as will be understood with reference to fig. 1 to 5 and fig. 7 to 10, the first and second lock portions 201 and 202 are each a circular arc structure that is adapted to the shape of the lock shaft 30, so that: when the lock shaft 30 is located in the first locking portion 201, the lock shaft 30 is attached to the locking portion, and when the lock tongue 20 is in the locked state, the lock shaft 30 is attached to the two locking portions.
The first locking portion 201 and the second locking portion 202 are simple in structure, low in processing cost and small in occupied space. In addition, the shapes of the first locking portion 201, the second locking portion 202 and the lock shaft 30 are matched, which is beneficial to improving the locking reliability.
Further, the center of rotation of the latch tongue 20 with respect to the lock base 10 is a rotation center, a horizontal distance between the arc center of the first locking portion 201 and the rotation center is a first distance, and a horizontal distance between the arc center of the second locking portion 202 and the rotation center is a second distance, and the second distance is greater than the first distance. A pin hole 203 is formed in the latch bolt 20 at a position corresponding to the rotation center, so that a connection member for connecting the latch bolt 20 and the lock base 10 and rotating the latch bolt 20 with respect to the lock base 10 passes through the pin hole.
Wherein, second locking portion 202 and first locking portion 201 interval setting in the locking direction, that is to say, first locking portion 201 and second locking portion 202 are in different positions on the locking route respectively, and the locking of second locking portion 202 to lock axle 30 is established and is gone on first locking portion 201 has played the basis of thick spacing (half locking) to lock axle 30, is favorable to realizing the accurate spacing (full locking) to lock axle 30, and then is favorable to improving the reliability of locking.
As will be understood with reference to fig. 5, when the lock tongue 20 is in the locked state, the arc center of the second lock portion 202 is located below the rotation center, and a gap K is formed between the rotation center and the arc center of the second lock portion 202. The rotation center is higher than the arc center of the second locking portion 202, so that the lock shaft 30 is more firmly locked along the disengaging direction (corresponding to the unlocking direction), which is beneficial to improving the reliability of locking.
Further, the first lock portion 201 and the second lock portion 202 are adjacent. The first locking part 201 is adjacent to the second locking part 202, so that on one hand, the occupied space of the lock tongue 20 is reduced; on the other hand, the locking reliability is improved.
Furthermore, the locking bolt 20 includes a locking bolt body 204 and a locking bolt expansion portion 205, the first locking portion 201 and the second locking portion 202 are disposed on the locking bolt body 204, and the expansion portion of the locking bolt 20 is located outside the lock base 10. The first limiting surface 206 is disposed on a side of the expanded portion of the locking bolt 20 facing the lock base 10, the second limiting surface 103 is disposed on a side of the lock base 10 facing the expanded portion of the locking bolt 20, and when the locking bolt 20 is in a locked state, the first limiting surface 206 abuts against the second limiting surface 103 to prevent the locking bolt 20 from continuing to rotate in the locking direction.
The first limiting surface 206 and the second limiting surface 103 are abutted to prevent the bolt 20 from continuing to rotate along the locking direction, so that the lock shaft 30 is protected, the reliable locking of the lock shaft 30 is realized, and the moment generated by the deviation of the rotation center of the bolt 20 relative to the rotation of the lock base 10 can be balanced.
As will be understood with reference to fig. 2-5 and 7-10, the locking mechanism further includes an elastic member 40, the elastic member 40 is disposed in the cavity 102, and when the locking bolt 20 is in the locked state, the lock shaft 30 abuts between the second locking portion 202 and the elastic member 40. On one hand, the elastic component 40 is in elastic contact with the lock shaft 30, which is beneficial to protecting the lock shaft 30; on the other hand, during the locking process, after the lock shaft 30 passes over the first locking portion 201 and is attached to the second locking portion 202, the lock shaft 30 moves continuously toward the elastic member 40 (in the positive X-axis direction), and then the lock shaft 30 moves in the reverse direction (in the negative X-axis direction) again by the elastic member 40 and the external force until the lock shaft 30 is attached to the second locking portion 202 again, thereby completing the locking.
As will be understood with reference to fig. 2 to 10, the locking mechanism further includes a reset member 50, the reset member 50 is provided on the lock base 10, the reset member 50 acts on the locking tongue 20, the reset member 50 is elastically deformable, and the reset member 50 is used to rotate the locking tongue 20 in the locking direction to reset from the unlocked state to the locked state. Reset member 50 has a first spring portion connected to lock base 10 and a second spring portion connected to locking bolt 20. Wherein the first spring part is hinged to the lock base 10 and the second spring part is hinged to the latch bolt 20.
Specifically, in the present embodiment, the reset component 50 is a tension spring, and accordingly, the latch bolt 20 is provided with a tension spring hole 207. It should be noted that in other alternative embodiments, the return element 50 may also be a torsion spring or a compression spring.
As will be understood with continued reference to fig. 1-5 and 7-10, the positions of the side of the locking bolt 20 for facing the lock shaft 30 excluding the first and second latching portions 201 and 202, and the side of the locking bolt 20 for facing away from the lock shaft 30 are provided with an escape groove 208. The avoiding groove 208 can avoid interference of the lock tongue 20 with the lock shaft 30 and the lock base 10 in the moving process, and is beneficial to improving the reliability of locking.
The embodiment also provides a locking assembly, which comprises an unlocking mechanism and the locking mechanism. The unlocking mechanism acts on the lock tongue 20 to rotate the lock tongue 20 in the unlocking direction to change from the locked state to the unlocked state, the unlocking direction being opposite to the locking direction. In this embodiment, as will be understood with reference to fig. 2 and 5-10, the unlocking mechanism includes a apply handle 60, the apply handle 60 being connected to the locking bolt 20. Specifically, a connection hole 209 is formed in the latch bolt 20, the force application handle 60 is inserted into the connection hole 209, and the force application handle 60 is rotatably connected to the latch bolt 20 through the connection hole 209.
The following locking process and unlocking process are briefly described below.
FIGS. 2-5 illustrate the locking mechanism of a preferred embodiment of the present invention to lock the lock shaft, wherein FIG. 2 illustrates the lock shaft moving along the opening of the lock base in the Z-axis direction; FIG. 3 shows the lock shaft moving in a forward direction along the X-axis after entering the cavity from the opening; fig. 4 shows the latch spindle mated with the first detent of the deadbolt; fig. 5 shows the bolt in the locked state and the lock shaft fitted with the second locking portion of the bolt. The embodiment further provides a quick-change bracket assembly, which comprises a quick-change bracket (not shown in the figure) and the locking mechanism, wherein the locking mechanism is fixedly arranged on the quick-change bracket. Specifically, the lock base is stationary relative to the ground, as shown in fig. 2 (an arrow in fig. 2 indicates a moving direction of the lock shaft), the lock shaft moves along the opening of the lock base in the Z-axis direction, the latch bolt rotates counterclockwise around the rotation center under the action of the lock shaft until the lock shaft abuts against the upper side wall of the cavity, at this time, the latch bolt rotates to the highest point (as shown in fig. 3), at this time, the lock shaft moves in the X-axis forward direction (an arrow in fig. 3 indicates a moving direction of the lock shaft), when the latch bolt moves to the first locking portion of the latch bolt, the latch bolt rotates clockwise around the rotation center under the action of the tension spring (3) and the self-weight to realize coarse limit (as shown in fig. 4) of the lock shaft, then, the lock shaft (4) continues to move in the X-axis forward direction, and when the latch bolt reaches the second locking portion, the elastic component is compressed, and the latch bolt continues. The lock shaft moves along the negative direction of the X shaft to be attached to the second locking part under the action of the elastic part and external force, the locking limiting is completed, and the precise limiting is realized, as shown in fig. 5.
Fig. 7-10 illustrate the process of unlocking the lock shaft by the locking mechanism according to a preferred embodiment of the present invention, wherein fig. 7 illustrates the lock shaft moving in the forward direction along the X-axis under the action of external force, and the lock shaft is disengaged from the second locking portion of the latch bolt; fig. 8 shows that the unlocking mechanism rotates the lock tongue counterclockwise under the action of external force, the lock shaft is disengaged from the first locking part of the lock tongue, and the lock shaft moves along the negative direction of the X axis; FIG. 9 shows the latch spindle moved to an extreme X-axis negative position in the cavity (i.e., the side walls of the cavity); fig. 10 shows that the external force on the unlocking mechanism is removed, the latch bolt rotates clockwise, the lock shaft moves in the negative direction along the Z-axis, and the latch bolt is reset. Specifically, as shown in fig. 7, the lock shaft moves in the X-axis forward direction (the arrow in fig. 7 indicates the moving direction of the lock shaft) by the external force until the second lock portion disengages from the lock shaft; then, as shown in fig. 8, when the force application handle is applied with an external force (the direction of the arrow on the force application handle in fig. 8 indicates the direction of the external force), the latch bolt rotates counterclockwise around the rotation center, and when the external force is applied, the latch bolt continues to rotate counterclockwise around the rotation center until the first locking portion is also disengaged from the lock shaft, and when the external force is applied, the lock shaft moves in the negative direction of the X axis (the arrow on the lock shaft in fig. 8 indicates the moving direction of the lock shaft). When the lock shaft moves to the side wall of the cavity, the lock shaft starts to move towards the negative direction of the Z shaft under the action of external force, at the moment, the external force on the force application handle is removed, and the lock tongue can rotate under the action of the tension spring (as shown in fig. 9). The lock shaft moves downwards continuously, the lock tongue resets under the action of the tension spring (as shown in fig. 10), and the position after resetting is consistent with the state before locking.
In addition, the embodiment also provides an electric vehicle, which includes a battery pack and the above quick-change bracket assembly, the battery pack is mounted on the quick-change bracket assembly, and the lock shaft 30 mounted on the battery pack is located in the cavity 102. On the basis of being beneficial to improving the locking reliability and stability of the locking mechanism to the lock shaft 30, the battery replacement reliability of the electric automobile is also beneficial to being improved.
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 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 scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (17)
1. A locking mechanism for a battery pack, the locking mechanism comprising:
the lock base is provided with an opening and a cavity extending from the opening, and the opening is used for allowing a lock shaft mounted on the battery pack to enter the cavity;
the spring bolt, the spring bolt can for lock base rotates in order to change between unblock state and locking state, the spring bolt is used for towards one side of lock axle has first locking portion and second locking portion in proper order along the locking direction, first locking portion is used for restricting the lock axle certainly drop on the lock base, works as the spring bolt is in when the locking state, second locking portion is used for restricting the lock axle orientation first locking portion moves, in order to prevent the lock axle follow the opening leaves the cavity.
2. The lock mechanism of claim 1, wherein the first lock portion and the second lock portion are each a circular arc structure that conforms to the shape of the lock shaft such that: when the lock shaft is located when the first locking part, the lock shaft is attached to the locking part, and when the lock tongue is in the locking state, the lock shaft is attached to the two locking parts.
3. The latch mechanism of claim 2, wherein the center of rotation of the latch bolt relative to the latch base is a center of rotation, the horizontal distance between the arc center of the first latch portion and the center of rotation is a first distance, and the horizontal distance between the arc center of the second latch portion and the center of rotation is a second distance, the second distance being greater than the first distance.
4. The latch mechanism of claim 3, wherein the arc center of the second latch portion is located below the center of rotation when the latch bolt is in the latched state.
5. The latch mechanism of claim 1 wherein said first latch portion abuts said second latch portion.
6. The latch mechanism of claim 1, wherein the latch bolt includes a latch bolt body and a latch bolt extension, the first latching portion and the second latching portion are disposed on the latch bolt body, and the latch bolt extension is disposed outside the lock base;
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.
7. The locking mechanism of claim 1, further comprising:
the elastic component is arranged in the cavity, and when the lock tongue is in the locking state, the lock shaft abuts against the position between the second locking part and the elastic component.
8. The locking mechanism of claim 1, further comprising:
the reset component is arranged on the lock base and acts on the lock tongue, the reset component can elastically deform, and the reset component is used for enabling the lock tongue to rotate in the locking direction to reset from the unlocking state to the locking state.
9. The lock mechanism of claim 8, wherein the reset member has a first spring portion and a second spring portion, the first spring portion being coupled to the lock base and the second spring portion being coupled to the deadbolt.
10. The latch mechanism of claim 9, wherein said first spring portion is hingedly connected to said lock base and said second spring portion is hingedly connected to said deadbolt.
11. The locking mechanism of claim 9, wherein the return member is a tension spring, a torsion spring, or a compression spring.
12. The latch mechanism of any of claims 1-11, wherein an avoidance slot is provided in the bolt on a side facing the latch shaft except for the location of the first detent portion and the second detent portion, and on a side facing away from the latch shaft.
13. A locking assembly, comprising:
the locking mechanism of any one of claims 1-12;
an unlocking mechanism acting on the bolt to cause the bolt to rotate in an unlocking direction to change from the locked state to the unlocked state, the unlocking direction being opposite to the locking direction.
14. The latch assembly of claim 13, wherein the unlatching mechanism includes a force applying handle, the force applying handle being connected to the latch bolt.
15. The latch assembly of claim 14, wherein the latch plate has a coupling aperture therethrough, and the apply handle is disposed through the coupling aperture and is rotatably coupled to the latch plate via the coupling aperture.
16. A quick-change holder assembly, characterized in that it comprises a quick-change holder and a locking mechanism according to any one of claims 1-12, which locking mechanism is fixedly arranged to the quick-change holder.
17. An electric vehicle comprising a battery pack and the quick-change bracket assembly of claim 16, wherein the battery pack is mounted to the quick-change bracket assembly and a latch shaft mounted to the battery pack is located in the cavity.
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| CN201811647258.5A CN111391640B (en) | 2018-12-29 | 2018-12-29 | Locking mechanism, locking assembly, quick-change bracket assembly and electric automobile |
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| CN201811647258.5A CN111391640B (en) | 2018-12-29 | 2018-12-29 | Locking mechanism, locking assembly, quick-change bracket assembly and electric automobile |
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| CN111391640B CN111391640B (en) | 2024-06-18 |
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| WO2023051791A1 (en) * | 2021-09-30 | 2023-04-06 | 奥动新能源汽车科技有限公司 | Unlocking method |
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