Vehicle battery locking and unlocking device

Abstract

The invention discloses a vehicle battery locking and unlocking device, and belongs to the technical field of battery locking and unlocking. The vehicle battery locking and unlocking device comprises an upper lock body used for being fixedly connected with a vehicle body and a lower lock body used for supporting and fixing a battery of the vehicle, and the lower lock body is detachably connected with the upper lock body. The lower lock body comprises a lock cylinder arranged on the lower portion of the upper lock body in a sleeving mode, a locking ball movably arranged in the lock cylinder and a lock sleeve which is arranged outside the lock cylinder and the locking ball and can move relative to the lock cylinder, and when the lock sleeve is located at the locking position relative to the lock cylinder, one part of the locking ball is clamped into the upper lock body under the action of the lock sleeve. When the lock sleeve is located at the unlocking position relative to the lock cylinder, the effect of the lock sleeve on the locking ball is relieved, and part of the locking ball slides out of the upper lock body.

Description

Technical Field

[0001] The invention belongs to the technical field of battery locking and unlocking, and in particular relates to a vehicle battery locking and unlocking device. Background Art

[0002] At present, the energy replenishment methods of new energy vehicles are generally divided into two methods: charging with the vehicle and replacing the battery. Compared with charging with the vehicle, replacing the battery is easier to meet the user's strong demand for rapid energy replenishment. It is worth mentioning that the key to replacing the battery lies in the design of the locking mechanism. When not replacing the battery, the locking mechanism keeps the battery and the body firmly connected; when replacing the battery, the locking mechanism quickly separates and connects the battery and the body to complete the energy replenishment.

[0003] However, the current locking mechanism mainly locks the battery by threaded connection. When locking the battery, the threaded member is always subjected to a large axial force. Repeated locking and unlocking processes easily lead to wear of the threads on the threaded member. In addition, when the car is driving, due to the forced vibration of the car body, the threaded member is also prone to fatigue failure, which cannot ensure the reliability of battery fixation and the safe driving of the vehicle. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a vehicle battery locking and unlocking device that can solve the problems of easy wear of the existing locking mechanism and low reliability of battery fixation.

[0005] In order to achieve the above-mentioned technical objectives, the present application provides a vehicle battery locking and unlocking device, including an upper lock body fixedly connected to a vehicle body, and a lower lock body for supporting and fixing the battery of the vehicle, the lower lock body being detachably connected to the upper lock body, the lower lock body comprising a lock core sleeved on the lower part of the upper lock body, a locking ball movably arranged in the lock core, and a lock sleeve installed outside the lock core and the locking ball and movable relative to the lock core, when the lock sleeve is in a locked position relative to the lock core, a part of the locking ball is stuck in the upper lock body under the action of the lock sleeve; when the lock sleeve is in an unlocked position relative to the lock core, the action of the lock sleeve on the locking ball is released, and the part of the locking ball slides out of the upper lock body.

[0006] In one embodiment, the lower lock body also includes a lock shell fixedly connected to the lock core, an elastic element installed in the lock shell and abutting against the lock sleeve, and a locking and unlocking rod that passes through the lock shell and the elastic element and is connected to the lock sleeve. The locking and unlocking rod can drive the lock sleeve to move toward or away from the upper lock body, push the part of the locking ball into the upper lock body, or allow the locking ball to slide out of the upper lock body.

[0007] In one embodiment, the lower lock body further comprises a ball disposed between the lock housing and the lock sleeve, and the ball is used to limit the rotation of the lock sleeve relative to the locking and unlocking rod.

[0008] In one embodiment, the lock housing is provided with a limiting groove extending in the axial direction, the lock sleeve is provided with a receiving groove opposite to the notch of the limiting groove, and the ball is located in the limiting groove and the receiving groove.

[0009] In yet another embodiment, one of the lock housing and the lock sleeve is provided with a guide groove extending in the axial direction, and the other of the lock housing and the lock sleeve is provided with a limiting rib matched with the guide groove.

[0010] In one embodiment, the locking and unlocking rod is provided with an external thread, and the locking sleeve is provided with an internal thread. The locking and unlocking rod and the locking sleeve are connected by the cooperation of the external thread and the internal thread. By rotating the locking and unlocking rod, the locking sleeve can be driven to move closer to or away from the upper lock body.

[0011] In one embodiment, the lower lock body further includes a first fixing piece, the lock core and the lock shell are provided with a connecting hole corresponding to the first fixing piece, and the lock shell and the lock core are fixedly connected through the cooperation between the first fixing piece and the connecting hole.

[0012] In one embodiment, the lower lock body also includes a second fixing member, the lock core includes a connecting portion, a locking portion, and a supporting portion arranged between the connecting portion and the locking portion, the lock core provides support for the battery through the supporting portion, and the battery is clamped between the second fixing member and the supporting portion through the cooperation of the connecting portion and the second fixing member.

[0013] In one embodiment, the lock core is provided with a receiving hole, the diameter of the receiving hole is greater than or equal to the diameter of the locking ball and the depth of the receiving hole is less than the diameter of the locking ball.

[0014] In one embodiment, the outer surface of the upper lock body is provided with a rolling groove adapted to the locking ball, and the depth of the rolling groove is smaller than the diameter of the locking ball.

[0015] By adopting the above technical solution, the present application has the following beneficial effects: The present application not only realizes the separation and connection of the battery and the vehicle body through the detachable connection between the upper lock body fixedly connected to the vehicle body and the lower lock body for supporting and fixing the battery of the vehicle, but also, by arranging a lock sleeve movable relative to the lock core outside the lock core and the locking ball of the lower lock body, the locking ball can be brought into contact with or disengaged from the upper lock body, and rolling friction is used instead of sliding friction, which is beneficial to solve the problems of low reliability and short service life of battery fixation of the existing locking mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A front view of a vehicle battery locking and unlocking device and a battery when assembled according to an embodiment of the present invention; Figure 2 for Figure 1 The three-dimensional structure diagram of the vehicle battery locking and unlocking device and the battery when assembled; Figure 3 It is a schematic diagram of the decomposed structure of the first embodiment of the present invention; Figure 4 It is a structural schematic diagram of the lock core in the first embodiment of the present invention; Figure 5 It is a schematic structural diagram of a lock housing, a lock sleeve and a ball in Embodiment 1 of the present invention; Figure 6 for Figure 1 The schematic diagram of the state structure of the vehicle battery locking and unlocking device in the AA direction when the battery is locked; Figure 7 for Figure 1 The schematic diagram of the state structure of the vehicle battery unlocking device in the AA direction when the battery is unlocked; Figure 8 for Figure 1 The schematic diagram of the structure of the state of the lower lock body in the AA direction when the lower lock body is separated from the upper lock body in the vehicle battery locking and unlocking device; Fig. 9 It is a schematic diagram of the structure of the lock housing and the lock sleeve in the second embodiment of the present invention.

[0018] Description of reference numerals: 1. Upper lock body; 2. Lower lock body; 3. Battery; 11. Grooving; 21. Lock core; 22. Locking ball; 23. 23a. Lock sleeve; 24. 24a. Lock housing; 25. Elastic element; 26. Locking and unlocking lever; 27. Ball bearing; 28. First fixing member; 29. ​​Second fixing member; 211, connecting portion; 212, locking portion; 213, supporting portion; 214, receiving hole; 231, receiving groove; 232, limiting rib; 233, partition; 234, receiving cavity; 241. Limiting groove; 242. Guide groove. DETAILED DESCRIPTION

[0019] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the description of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0021] The directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front”, “back”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0022] The terms "first", "second", "third", etc. are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0023] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0024] With the increase in the stock of new energy vehicles and the support of policies, the parallel charging and battery replacement measures have gradually gained market recognition. Users have a stronger demand for fast charging and battery replacement. In order to meet the demand for fast battery replacement, a safe and reliable battery locking mechanism is very necessary.

[0025] According to the inventors, the current locking mechanisms can lock the battery by threaded connection or by tightening the intermediate mechanism with a threaded member to fix the battery indirectly. However, all the above solutions have a common problem, that is, when locking the battery, the threaded member is always subjected to a large axial force, and repeated locking and unlocking not only easily leads to wear of the threads on the threaded member, but also, when the car is driving, due to the forced vibration of the car body, the threaded member is also prone to fatigue failure, which cannot ensure the reliability of battery fixation and the safe driving of the vehicle.

[0026] In order to solve the problem that the existing locking mechanism is easy to wear and has low reliability in fixing the battery, it is necessary to improve or optimize the structure of the battery locking mechanism.

[0027] Embodiment 1 See also Figures 1 to 3 The first embodiment of the present invention provides a vehicle battery locking and unlocking device, which includes an upper lock body 1 and a lower lock body 2, wherein the upper lock body 1 is used to be fixedly connected to the vehicle body, and the lower lock body 2 is used to support and fix the battery 3 of the vehicle, and the lower lock body 2 is detachably connected to the upper lock body 1. It should be noted that the vehicle body mentioned here specifically refers to the sheet metal structure used to assemble the battery 3 on the vehicle, such as the chassis of the vehicle, the fixed connection includes but is not limited to welding and threaded connection, the battery 3 refers to the power battery that provides power for the vehicle, and the detachable connection includes but is not limited to plug-in and socket connection, so as to quickly replenish the vehicle with electric energy through convenient assembly and disassembly.

[0028] In the first embodiment, the upper lock body 1 is T-shaped, including a horizontal section and a vertical section, wherein the horizontal section is plate-shaped and is used to be fixedly connected to the vehicle body; the vertical section is columnar and extends downward from the bottom surface of the middle part of the horizontal section, and a rolling groove 11 is formed on the outer surface of the lower part of the vertical section, and the rolling groove 11 is used to connect the upper lock body 1 with the lower lock body 2. Specifically, the rolling groove 11 is located on the outer circumferential surface of the lower part of the vertical section of the upper lock body 1, and is an annular groove, and its notch is radially outward along the vertical section.

[0029] The lower lock body 2 includes a lock core 21, a locking ball 22 and a lock sleeve 23, wherein the lock core 21 is sleeved on the lower part of the upper lock body 1, the locking ball 22 is movably mounted in the lock core 21, and the lock sleeve 23 is mounted on the outer side of the lock core 21 and the locking ball 22 and is movable relative to the lock core 21. Preferably, the lock core 21, the lock sleeve 23 and the upper lock body 1 are coaxially arranged so that the detachable connection between the lower lock body 2 and the upper lock body 1 can be achieved by applying a small force.

[0030] like Figure 3 , Figure 4 and Figure 5As shown, the lock core 21 is columnar, and a first through hole is formed in the middle for penetrating the vertical section of the upper lock body 1. Specifically, the lock core 21 includes a connecting portion 211, a locking portion 212 and a supporting portion 213, wherein the connecting portion 211 is located at the upper portion of the lock core 21, and is used to extend into the corresponding assembly hole on the battery 3; the locking portion 212 is located at the lower portion of the lock core 21, and its wall portion is formed with a receiving hole 214 that radially penetrates the locking portion 212, so as to accommodate the locking ball 22; the supporting portion 213 is located between the connecting portion 211 and the locking portion 212, and the outer diameter of the supporting portion 213 is larger than the outer diameter of the connecting portion 211, and also larger than the outer diameter of the locking portion 212, so as to support the battery 3. Preferably, the diameter of the receiving hole 214 is greater than or equal to the diameter of the locking ball 22, and the supporting portion 213 is integrally formed with the connecting portion 211 and the locking portion 212.

[0031] In some implementations, there may be more than one locking ball 22 . In the first embodiment, there are four locking balls 22 , which are evenly installed in the receiving holes 214 of the locking portion 212 .

[0032] The lock sleeve 23 is also columnar, and a second through hole is formed in the middle for accommodating the locking portion 212 of the lock core 21 and the locking ball 22 in the lock core 21 . The inner diameter of the second through hole is greater than the inner diameter of the first through hole.

[0033] It should be noted that, in order to achieve a detachable connection between the lower lock body 2 and the upper lock body 1, the depth of the rolling groove 11 on the upper lock body 1 is smaller than the diameter of the locking ball 22, the receiving hole 214 on the lower lock body 2 is connected to the first through hole in the middle of the lock core 21, and the depth of the receiving hole 214, that is, the wall thickness of the locking portion 212 is smaller than the diameter of the locking ball 22, so that the locking ball 22 can roll inward or outward in the receiving hole 214 to insert a part of the locking ball 22 into the rolling groove 11 on the upper lock body 1 or slide out of the rolling groove 11. Preferably, the diameter of the locking ball 22 is larger than the sum of the depth of the receiving hole 214 and the depth of the rolling groove 11, and the inner surface of the rolling groove 11 is adapted to the outer surface of the locking ball 22. In this way, when the outer surface of the locking ball 22 contacts both the wall surface of the rolling groove 11 on the upper lock body 1 and the inner wall of the second through hole on the lock sleeve 23, the lock sleeve 23 is in a locked position relative to the lock core 21, such as Figure 6 When the outer surface of the locking ball 22 is separated from the wall of the rolling groove 11 on the lock body 1 or separated from the inner wall of the second through hole on the lock sleeve 23, the lock sleeve 23 is located in the unlocked position relative to the lock core 21, as shown Figure 7 shown.

[0034] In the first embodiment, in order to enable the lock sleeve 23 to move between a locked position and an unlocked position relative to the lock core 21, the lower lock body 2 also includes a lock shell 24, an elastic element 25 and a locking and unlocking rod 26, wherein the lock shell 24 is sleeved on the outside of the lock sleeve 23 and fixedly connected to the lock core 21, the elastic element 25 is installed in the lock shell 24 and abuts against the lock sleeve 23, and the locking and unlocking rod 26 passes through the lock shell 24 and the elastic element 25 and is connected to the lock sleeve 23. Specifically, the lock shell 24 is cylindrical, with one end open and the other end closed, and a matching hole for the locking and unlocking rod 26 to pass through is formed on the closed end of the lock shell 24, and the cross-section of the matching hole is convex; a partition 233 is formed in the middle of the second through hole of the lock sleeve 23, and the partition 233 divides the second through hole of the lock sleeve 23 into two accommodating chambers 234 in the vertical direction, one of the two accommodating chambers 234 is used to accommodate the locking portion 212 of the lock cylinder 21, and the other is used to accommodate the elastic element 25; the elastic element 25 refers to a mechanical element that can undergo elastic deformation under the action of external force and can restore its original shape, such as a spring, a spring sheet, etc., which is pressed between the lock shell 24 and the lock sleeve 23; the locking and unlocking rod 26 can drive the lock sleeve 23 to move in a direction close to or away from the upper lock body 1, push a part of the locking ball 22 into the upper lock body 1, or allow the locking ball 22 to slide out of the upper lock body 1. It should be noted that the connection between the locking and unlocking rod 26 and the locking sleeve 23 mentioned here can be a threaded connection or a fixed connection.

[0035] In the first embodiment, in order to accurately control the locking and unlocking position of the lock sleeve 23 relative to the lock core 21, the locking and unlocking rod 26 and the lock sleeve 23 are connected by a threaded connection. Specifically, an external thread is formed on the locking and unlocking rod 26, and an internal thread is formed on the partition 233 of the lock sleeve 23. The locking and unlocking rod 26 and the lock sleeve 23 are connected by the cooperation of the external thread and the internal thread. The locking sleeve 23 can be driven to approach or move away from the upper lock body 1 by the rotation of the locking and unlocking rod 26. Preferably, the external thread on the locking and unlocking rod 26 and the internal thread on the partition 233 are left-handed, so that in the process of rotating the locking and unlocking rod 26, the movement direction of the lock sleeve 23 relative to the lock core 21 is consistent with the operating habits of the operator, that is, locking is performed when the locking and unlocking rod 26 is rotated to the right, and unlocking is performed when the locking and unlocking rod 26 is rotated to the left.

[0036] It should be noted that in order to enable the lock sleeve 23 to move between the locked position and the unlocked position relative to the lock core 21, please refer to Figure 6 , Figure 7, the top end of the locking and unlocking rod 26 that passes through the lock shell 24 and the elastic element 25 abuts against the bottom of the vertical section of the upper lock body 1. Preferably, the bottom of the vertical section of the upper lock body 1 is formed with a groove, such as a cone groove, that matches the end of the upper part of the locking and unlocking rod 26. In this way, when it is necessary to lock the battery 3, the operator uses an auxiliary tool to push against and turn the locking and unlocking rod 26 to the right. In the vertical direction, due to the push against the bottom of the upper lock body 1, the height position of the locking and unlocking rod 26 relative to the lock shell 24 remains unchanged, and only rotates clockwise. The lock sleeve 23 will rise to the locking position under the combined action of the external force torque, the elastic potential energy of the elastic element 25 and the damping force of the locking ball 22, and at the same time push a part of the locking ball 22 to slide into the rolling groove 11. At this time, the elastic element 25 is in a light load state, and the upper lock body 1 and the lower lock body 2 are in a relatively fixed state, so that the battery 3 installed on the lower lock body 2 can be locked.

[0037] When it is necessary to unlock the battery 3, the operator uses an auxiliary tool to push against and turn the unlocking rod 26 to the left. In the vertical direction, due to the push of the bottom of the upper lock body 1, the height position of the unlocking rod 26 relative to the lock shell 24 remains unchanged, and only rotates counterclockwise. The lock sleeve 23 will drop to the unlocking position under the combined action of the external force torque, the elastic potential energy of the elastic element 25 and the damping force of the locking ball 22, and the restriction on the outward rolling of the locking ball 22 will be released. At this time, the compression deformation of the elastic element 25 reaches the maximum, and a part of the locking ball 22 will slide outward from the rolling groove 11 of the upper lock body 1 and abut against the lock sleeve 23, so that the battery 3 installed on the lower lock body 2 can be unlocked by separating the lower lock body 2 from the upper lock body 1.

[0038] It should be noted that in the initial stage of the separation of the upper lock body 1 from the lower lock body 2, due to the abutment of the locking ball 22 on the lock sleeve 23 and the lower part of the upper lock body 1 on the unlocking rod 26, the lock sleeve 23 and the unlocking rod 26 will be restricted from moving upward first. When the lower lock body 2 moves downward under the action of gravity and / or external force, the lower part of the upper lock body 1 will push the locking ball 22 to roll further outward and separate from the unlocking rod 26. After the locking ball 22 slides over the bottom end of the upper lock body 1, the lock sleeve 23 and the unlocking rod 26 are locked. Driven by the elastic potential energy of the elastic element 25, the sleeve 23 and the locking and unlocking rod 26 will rise synchronously to the position where the partition 233 of the lock sleeve 23 abuts the locking portion 212 of the lock cylinder 21. At the same time, the lock sleeve 23 pushes a part of the locking ball 22 to make the locking ball 22 roll in the receiving hole 214 toward the first through hole of the lock cylinder 21. At this time, the elastic element 25 is in a micro-load state due to the deadweight of the lock sleeve 23 and the locking and unlocking rod 26, so the removed battery 3 can be placed in the battery swap station for storage and charging. Figure 8Preferably, when the upper lock body 1 is completely separated from the lower lock body 2, the top of the locking and unlocking rod 26 is on the same horizontal plane as the central axis of the receiving hole 214, or in the vertical direction, the top of the locking and unlocking rod 26 is higher than the central axis of the receiving hole 214, so that the lower lock body 2 and the upper lock body 1 can be easily reassembled.

[0039] Furthermore, when the connection between the locking and unlocking rod 26 and the lock sleeve 23 is a threaded connection, in order to prevent the locking and unlocking rod 26 and the lock sleeve 23 from coaxially rotating during the process of the operator pushing against and rotating the locking and unlocking rod 26, causing the locking and unlocking action to fail, such as Figure 3 , Figure 5 As shown, the lower lock body 2 of the vehicle battery locking and unlocking device further includes a ball 27 disposed between the lock shell 24 and the lock sleeve 23, which is used to limit the rotation of the lock sleeve 23 relative to the locking and unlocking rod 26. Specifically, the lock shell 24 is provided with a limiting groove 241 extending in the axial direction, the lock sleeve 23 is provided with a receiving groove 231 facing the notch of the limiting groove 241, and the ball 27 is located in the limiting groove 241 and the receiving groove 231. Preferably, the diameter of the ball 27 is greater than the sum of the depth of the limiting groove 241 and the depth of the receiving groove 231, so that in the process of abutting and rotating the locking and unlocking rod 26, the rotation of the lock sleeve 23 relative to the locking and unlocking rod 26 in the horizontal direction is limited, and the movement of the lock sleeve 23 relative to the locking and unlocking rod 26 in the vertical direction is ensured.

[0040] In some embodiments, there may be a plurality of balls 27, which may be circumferentially distributed between the lock sleeve 23 and the lock housing 24, or may be arranged in a plurality of ball strings. In the first embodiment, there are three strings of balls 27, which are evenly installed between the lock sleeve 23 and the lock housing 24. It should be noted that each string of balls 27 has four balls, but is not limited thereto. Preferably, the diameter of the ball 27 is smaller than the diameter of the locking ball 22.

[0041] In some embodiments, the connection between the locking and unlocking rod 26 and the lock sleeve 23 refers to a fixed connection, including but not limited to welding. At this time, the top end of the locking and unlocking rod 26 that passes through the lock shell 24 and the elastic element 25 may no longer abut the bottom of the vertical section of the upper lock body 1. When the battery 3 needs to be unlocked, the operator can use an auxiliary tool to pull the locking and unlocking rod 26 outward to make the lock sleeve 23 drop to the unlocking position, and at the same time make the locking ball 22 slide outward from the rolling groove 11, and then move the lower lock body 2 downward to separate the lower lock body 2 from the upper lock body 1. When the battery 3 needs to be locked, since the elastic element 25 has the elastic potential energy to restore its original shape, the operator can release the locking and unlocking rod 26, so that the lock sleeve 23 and the locking and unlocking rod 26 are synchronously raised to the locking position under the drive of the elastic potential energy of the elastic element 25, and at the same time, the lock sleeve 23 pushes the locking ball 22 to roll in the rolling groove 11, and the connection between the lower lock body 2 and the upper lock body 1 can also be achieved.

[0042] In the first embodiment, the lower lock body 2 of the vehicle battery unlocking device further includes a first fixing member 28 and a second fixing member 29, wherein the first fixing member 28 is used for fixing the lock housing 24 and the lock core 21, and the second fixing member 29 is used for fixing the battery 3. Specifically, the first fixing member 28 may be a screw, and correspondingly, a connection hole corresponding to the first fixing member 28, such as a threaded hole, is formed on the lock core 21 and the lock housing 24. The operator can fix the lock housing 24 and the lock core 21 by tightening the first fixing member 28 in the connection hole.

[0043] The second fixing member 29 can be a nut or a pin, and accordingly, an external thread or a pin hole matching the second fixing member 29 is formed on the outer surface of the connecting portion 211. In this way, when the battery 3 is connected to the lower lock body 2, the lock core 21 of the lower lock body 2 provides support for the battery 3 through the supporting portion 213, and the battery 3 is clamped between the second fixing member 29 and the supporting portion 213 through the cooperation of the connecting portion 211 penetrating the assembly hole on the battery 3 and the second fixing member 29.

[0044] Compared with the prior art, when the lower lock body 2 is connected to the upper lock body 1, since the threaded components such as the locking and unlocking rod 26, the first fixing piece 28 and the second fixing piece 29 mainly play the connecting role, they are no longer subjected to a large axial load. This not only solves the problem of easy wear and fatigue failure of the threads of the prior art locking mechanism due to repeated locking and unlocking and forced vibration of the vehicle body, but is also beneficial to ensuring the reliability of battery fixation and safe driving of the vehicle.

[0045] Embodiment 2 See also Fig. 9 The second embodiment of the present invention also provides a vehicle battery locking and unlocking device, most of the features of the locking and unlocking device are the same as those of the locking and unlocking device of the aforementioned embodiment one, the difference is that the lock sleeve 23a and the lock shell 24a of the locking and unlocking device of the second embodiment are different in structure from the lock sleeve 23 and the lock shell 24 of the locking and unlocking device of the first embodiment, and the arrangement of the ball 27 is cancelled, which is described in detail below.

[0046] In the second embodiment, a limiting rib 232 extending in the axial direction is formed on the lock sleeve 23a, and a guide groove 242 extending in the axial direction and adapted to the limiting rib 232 is formed on the lock shell 24a. Specifically, the limiting rib 232 protrudes radially outward from the outer surface of the lock sleeve 23a, and the guide groove 242 is recessed radially outward from the inner surface of the lock shell 24a. In this way, when the operator pushes against and rotates the locking and unlocking rod 26, the lock sleeve 23a threadedly connected to the locking and unlocking rod 26, under the joint action of the limiting rib 232 and the guide groove 242 of the lock shell 24a, can limit the rotation of the lock sleeve 23a relative to the locking and unlocking rod 26 in the horizontal direction and ensure the movement of the lock sleeve 23a relative to the locking and unlocking rod 26 in the vertical direction, thereby preventing the locking and unlocking rod 26 and the lock sleeve 23a from coaxially rotating, causing the locking and unlocking action to fail.

[0047] In some implementations, there may be more than one limiting rib 232 and more than one guiding groove 242 . In the second embodiment, there are three limiting ribs 232 and three guiding grooves 242 .

[0048] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A vehicle battery locking and unlocking device, characterized in that: The invention comprises an upper lock body (1) for being fixedly connected to a vehicle body, and a lower lock body (2) for supporting and fixing a battery (3) of the vehicle, wherein the lower lock body (2) is detachably connected to the upper lock body (1), and the lower lock body (2) comprises a lock core (21) sleeved on the lower part of the upper lock body (1), a locking ball (22) movably arranged in the lock core (21), and a lock sleeve (23) arranged outside the lock core (21) and the locking ball (22) and movable relative to the lock core (21). , 23a), when the lock sleeve (23, 23a) is in a locking position relative to the lock core (21), a portion of the locking ball (22) is inserted into the upper lock body (1) under the action of the lock sleeve (23, 23a); when the lock sleeve (23, 23a) is in an unlocking position relative to the lock core (21), the action of the lock sleeve (23, 23a) on the locking ball (22) is released, and the portion of the locking ball (22) slides out of the upper lock body (1).

2. The vehicle battery locking and unlocking device according to claim 1, characterized in that: The lower lock body (2) further comprises a lock shell (24, 24a) fixedly connected to the lock core (21), an elastic element (25) installed in the lock shell (24, 24a) and abutting against the lock sleeve (23, 23a), and a locking and unlocking rod (26) penetrating the lock shell (24, 24a) and the elastic element (25) and connected to the lock sleeve (23, 23a), wherein the locking and unlocking rod (26) can drive the lock sleeve (23, 23a) to move in a direction approaching or away from the upper lock body (1), so as to push the part of the locking ball (22) into the upper lock body (1), or enable the locking ball (22) to slide out of the upper lock body (1).

3. The vehicle battery locking and unlocking device according to claim 2, characterized in that: The lower lock body (2) further comprises a ball (27) disposed between the lock shell (24, 24a) and the lock sleeve (23, 23a), wherein the ball (27) is used to limit the rotation of the lock sleeve (23, 23a) relative to the locking and unlocking rod (26).

4. The vehicle battery locking and unlocking device according to claim 3, characterized in that: The lock housing (24, 24a) is provided with a limiting groove (241) extending in the axial direction, the lock sleeve (23, 23a) is provided with a receiving groove (231) opposite to the notch of the limiting groove (241), and the ball (27) is located in the limiting groove (241) and the receiving groove (231).

5. The vehicle battery locking and unlocking device according to claim 2, characterized in that: One of the lock shell (24, 24a) and the lock sleeve (23, 23a) is provided with a guide groove (242) extending along the axial direction, and the other of the lock shell (24, 24a) and the lock sleeve (23, 23a) is provided with a limiting rib (232) adapted to the guide groove (242).

6. The vehicle battery locking and unlocking device according to claim 2, characterized in that: The locking and unlocking rod (26) is provided with an external thread, and the locking sleeve (23, 23a) is provided with an internal thread. The locking and unlocking rod (26) and the locking sleeve (23, 23a) are connected by the cooperation of the external thread and the internal thread. The locking and unlocking rod (26) can be driven to move the locking sleeve (23, 23a) closer to or away from the upper lock body (1) by rotating the locking and unlocking rod (26).

7. The vehicle battery locking and unlocking device as claimed in claim 2, characterized in that: The lower lock body (2) further comprises a first fixing member (28); the lock core (21) and the lock housing (24, 24a) are provided with connecting holes corresponding to the first fixing member (28); the lock housing (24, 24a) and the lock core (21) are fixedly connected by the cooperation between the first fixing member (28) and the connecting hole.

8. The vehicle battery locking and unlocking device as claimed in claim 2, characterized in that: The lower lock body (2) also includes a second fixing member (29); the lock core (21) includes a connecting portion (211), a locking portion (212), and a supporting portion (213) arranged between the connecting portion (211) and the locking portion (212); the lock core (21) provides support for the battery (3) through the supporting portion (213), and the battery (3) is clamped between the second fixing member (29) and the supporting portion (213) through the cooperation between the connecting portion (211) and the second fixing member (29).

9. The vehicle battery locking and unlocking device according to claim 1, characterized in that: The lock core (21) is provided with a receiving hole (214), the diameter of the receiving hole (214) is greater than or equal to the diameter of the locking ball (22) and the depth is less than the diameter of the locking ball (22).

10. The vehicle battery locking and unlocking device according to claim 1, characterized in that: The outer surface of the upper lock body (1) is provided with a rolling groove (11) adapted to the locking ball (22), and the depth of the rolling groove (11) is smaller than the diameter of the locking ball (22).

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