Locking mechanism, power battery box assembly and vehicle
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI ENNEAGON ENERGY TECH CO LTD
- Filing Date
- 2025-09-19
- Publication Date
- 2026-08-07
AI Technical Summary
[0004]为解决锁止机构容易出现锁止和解锁卡滞的问题，本申请提供了一种锁止机构、动力电池箱总成及车辆
[0015]为解决锁止机构容易锁止和解锁卡滞的问题，本申请有以下优点：
Smart Images
Figure CN224602680U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of locking structure technology, and more specifically, to a locking mechanism, a power battery pack assembly, and a vehicle. Background Technology
[0002] As the "heart" of new energy vehicles, the installation design of the power battery directly affects the vehicle's safety, range, and space utilization. The power battery is typically installed in a battery box frame, with a base bracket fixed to the vehicle. A locking mechanism presses the battery box frame firmly onto the base bracket, thus securing the power battery.
[0003] However, when the vehicle is traveling on bumpy roads, the locking tongue of the existing power battery locking mechanism is prone to deformation, which can lead to jamming during locking and unlocking. Utility Model Content
[0004] To address the problem of locking and unlocking mechanisms easily getting stuck, this application provides a locking mechanism, a power battery pack assembly, and a vehicle.
[0005] Firstly, the locking mechanism provided in this application includes: A fixing part is provided with a sliding guide part; the extension trajectory of the sliding guide part is arc-shaped. First rotating part; The first rotating shaft is rotatably connected to the fixed part via the first rotating shaft; the projection of the first rotating shaft along its own axial direction is located on the arc-shaped trajectory of the sliding guide part. The second rotating part has a first contact surface; the first contact surface is slidably contacted with the fixing part; a first clearance groove is provided on the first contact surface; the projection area of the fixing part on the first contact surface covers part of the first clearance groove. The second rotating part is rotatably connected to the fixed part via the second rotating shaft; the second rotating shaft is movably connected to the fixed part; the second rotating shaft moves along the arc-shaped trajectory of the sliding guide part; A clamping part, wherein the clamping part is connected to the first rotating part or the second rotating part; The third rotating shaft connects the first rotating part and the second rotating part; the first rotating shaft and the third rotating shaft are parallel and spaced apart; the second rotating shaft and the third rotating shaft are parallel and spaced apart; the concave side of the sliding guide is positioned towards the third rotating shaft; the radius of curvature of the arc trajectory of the sliding guide is smaller than the distance between the first rotating shaft and the third rotating shaft; the pressing part is positioned close to the third rotating shaft.
[0006] In some embodiments, the second rotating part has a second contact surface; the first contact surface and the second contact surface are disposed opposite to each other; the second contact surface is slidably contacted with the first rotating part.
[0007] In some embodiments, a second clearance groove is provided on the second mating surface; the projection of the first rotating part on the second mating surface covers part of the second clearance groove.
[0008] In some embodiments, multiple first clearance slots are provided; multiple second clearance slots are provided; the area ratio of all the first clearance slots to the area of the first mating surface is a first ratio; the area ratio of all the second clearance slots to the area of the second mating surface is a second ratio; the first ratio is greater than the second ratio.
[0009] In some embodiments, at least some of the first clearance slots are parallel to each other; at least some of the second clearance slots are parallel to each other; the distance between two adjacent parallel first clearance slots is less than the distance between two adjacent parallel second clearance slots; and the width of the first clearance slot is greater than the width of the second clearance slot.
[0010] In some embodiments, the locking mechanism further includes a driving unit; the driving unit includes a sliding drive member and a fourth rotating shaft; the piston rod of the sliding drive member is rotatably connected to the second rotating unit via the fourth rotating shaft; the third rotating shaft is parallel to the fourth rotating shaft and has a distance between them; the distance between the fourth rotating shaft and the third rotating shaft is greater than the distance between the first rotating shaft and the third rotating shaft.
[0011] In some embodiments, when the second rotating shaft moves away from the first rotating shaft along the arcuate trajectory of the sliding guide, the direction of rotation of the first rotating part around the first rotating shaft is a first rotation direction; The locking mechanism further includes a limiting part; the limiting part is fixedly connected to the second rotating part; when the axis of the first rotating shaft coincides with the axis of the second rotating shaft, in the path of the second rotating part rotating around the first rotating shaft, the limiting part can abut against the fixing part to limit the angle of the second rotating part rotating around the first rotating shaft in a second direction; the second direction is opposite to the first direction.
[0012] In some embodiments, the clamping part, the first rotating part, and the second rotating part are rotatably connected via the third rotating shaft; The pressing part includes a rotating block and a pressing plate; the rotating block and the pressing plate are integrally formed; the rotating block is rotatably connected to the second rotating part and the first rotating part respectively through the third rotating shaft; in the path of the rotating block rotating around the axis of the third rotating shaft, the second rotating part or the first rotating part can abut against the pressing plate to limit the angle of rotation of the pressing plate around the third rotating shaft in the first rotation direction.
[0013] Secondly, this application provides a power battery pack assembly, comprising: The locking mechanism described in any of the embodiments of the first aspect above; The base bracket, wherein the fixing part of the locking mechanism is fixedly connected to the base bracket; The battery box frame, wherein the pressing part of the locking mechanism presses the battery box frame onto the base bracket; A power battery, which is installed in the battery box frame.
[0014] Thirdly, this application provides a vehicle that includes the power battery pack assembly described in the second aspect above.
[0015] To address the problem of locking and unlocking mechanisms easily getting stuck, this application has the following advantages: When the axes of the first and second rotating shafts coincide, the first and second rotating parts can be controlled to swing rapidly around the first rotating shaft synchronously, thereby driving the pressing part to swing rapidly and achieving rapid initial pressing. When the pressing part swings rapidly until it contacts the object being pressed, the movement of the second rotating part is continuously controlled so that the axis of the second rotating shaft gradually shifts away from the axis of the first rotating shaft, achieving continuous pressing of the object by the pressing part. During continuous pressing, by controlling the distance from the point of force application on the second rotating part to the third rotating shaft to be greater than the distance between the first and third rotating shafts, the pressing force can be amplified according to the principle of energy conservation, thus ensuring reliable pressing. When the pressing part is subjected to the impact force from vibration, the first, second, and fixed parts can share the vibration force, minimizing deformation of the locking mechanism and thus solving the problem of easy jamming during locking and unlocking of the locking mechanism. In addition, because the arc trajectory of the sliding guide is relatively long, the contact area between the first contact surface and the fixed part is large. The first clearance groove can reduce the contact area between the first contact surface and the fixed part, thereby reducing frictional resistance. At the same time, it can facilitate the entry of air between the first contact surface and the fixed part, avoiding the generation of a vacuum, thereby minimizing the possibility of jamming of the locking mechanism during unlocking and locking. Attached Figure Description
[0016] Figure 1 A schematic diagram of the locking mechanism in Embodiment 1 is shown; Figure 2 It shows Figure 1 A partial structural diagram of the locking mechanism in the middle; Figure 3 It shows Figure 2 A partial structural diagram of the locking mechanism in the middle; Figure 4 A simplified schematic diagram of the locking mechanism of Embodiment 1 in the final clamped state is shown; Figure 5 A front view of the locking mechanism of Embodiment 1 in the fully unlocked state is shown; Figure 6 A front view of the locking mechanism of Embodiment 1 in the initial clamping state is shown; Figure 7 A front view of the locking mechanism of Embodiment 1 in its final compressed state is shown; Figure 8 It shows Figure 1 Another structural diagram of the locking mechanism in the middle; Figure 9 A schematic diagram of the locking mechanism according to another embodiment is shown; Figure 10 It shows Figure 9 A front view of the locking mechanism in the middle; Figure 11 A schematic diagram showing the assembly relationship between the guide cover and the locking mechanism in Embodiment 2 is provided. Figure 12 A schematic diagram showing the assembly relationship between the base bracket and the locking mechanism in Embodiment 2 is provided.
[0017] Figure label: 10. Locking mechanism; 11. Fixing part; 111. Sliding guide part; 112. First fixing plate; 113. Second fixing plate; 114. Third fixing plate; 12. First rotating part; 13. First rotating shaft; 14. Second rotating part; 141. Shaft hole; 142. First contact surface; 143. First clearance groove; 144. Second contact surface; 145. Second clearance groove; 15. Second rotating shaft; 151. Lubricating component; 16. Pressing part; 161. Rotating block; 162. Pressing plate; 17. Third rotating shaft; 18. Driving part; 181. Sliding driving component; 182. Fourth rotating shaft; 19. Limiting part; 20. Base bracket; 30. Guide cover; 31. Opening; 32. Guide slope. Detailed Implementation
[0018] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, and are not intended to imply any limitation on the scope of the disclosure.
[0019] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "at least partially based on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or being constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientations or positional relationships; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the terms "installed", "set up", "equipped with", "connected", and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are mainly used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.
[0020] The power battery is usually installed in the battery box frame. The vehicle is equipped with a base bracket, and the battery box frame is pressed into the base bracket by a locking mechanism, which can fix the power battery.
[0021] When a vehicle is traveling on a bumpy road or experiencing severe vibrations such as rapid acceleration or deceleration, the locking tongue of the existing locking mechanism is easily affected by continuous vibration and impact, which can cause deformation and lead to unlocking jamming.
[0022] To address the issue of locking mechanisms easily becoming stuck during unlocking, this application provides a locking mechanism, a power battery pack assembly, and a vehicle.
[0023] Example 1:
[0024] Reference Figure 1 and Figure 2This application provides a locking mechanism 10. The locking mechanism 10 includes a fixing part 11, a first rotating part 12, a first rotating shaft 13, a second rotating part 14, a second rotating shaft 15, a pressing part 16, and a third rotating shaft 17.
[0025] Reference Figure 3 The fixed part 11 is provided with a sliding guide part 111, and the extension trajectory of the sliding guide part 111 is arc-shaped. In this embodiment, the sliding guide part 111 is a groove; in another embodiment, the sliding guide part 111 can also be a slide rail.
[0026] Reference Figure 3 and Figure 4 The first rotating part 12 is rotatably connected to the fixed part 11 via a first rotating shaft 13. The projection of the first rotating shaft 13 along its own axial direction lies on the arcuate trajectory of the sliding guide part 111. The second rotating part 14 has a first contact surface 142, which is slidably contacted with the fixed part 11. A first clearance groove 143 is provided on the first contact surface 142, and the projection area of the fixed part 11 on the first contact surface 142 covers part of the first clearance groove 143. The second rotating part 14 is rotatably connected to the fixed part 11 via a second rotating shaft 15, which is movably connected to the fixed part 11. The second rotating shaft 15 moves along the arcuate trajectory of the sliding guide part 111, and the axis of the second rotating shaft 15 is perpendicular to the first contact surface 142.
[0027] Since the projection of the first rotating shaft 13 along its own axial direction lies on the arcuate trajectory of the sliding guide 111, the axis of the first rotating shaft 13 and the axis of the second rotating shaft 15 can be either coincident or separated. Because the arcuate trajectory of the sliding guide 111 is relatively long, the contact area between the first contact surface 142 and the fixed part 11 is large. The first clearance groove 143 can reduce the contact area between the first contact surface 142 and the fixed part 11, thereby reducing frictional resistance. Furthermore, when the first contact surface 142 and the fixed part 11 are tightly fitted, a vacuum suction phenomenon can easily occur, causing the first contact surface 142 and the fixed part 11 to be sucked together, thus hindering the relative rotation between the second rotating part 14 and the fixed part 11. By providing the first clearance groove 143, air can enter between the first contact surface 142 and the fixed part 11, preventing the formation of a vacuum and thus avoiding jamming when the second rotating part 14 and the fixed part 11 rotate relative to each other.
[0028] Reference Figure 1 and Figure 2The pressing part 16 is connected to either the first rotating part 12 or the second rotating part 14. In some embodiments, the pressing part 16 is fixedly or rotatably connected to the first rotating part 12. In other embodiments, the pressing part 16 is fixedly or rotatably connected to the second rotating part 14. When the pressing part 16 can rotate freely, when pressing an object with the pressing part 16, the pressing part 16 can adaptively rotate to increase the contact area between the pressing part 16 and the object being pressed.
[0029] Reference Figure 1 and Figure 4 The first rotating part 12 and the second rotating part 14 are rotatably connected by a third rotating shaft 17. The first rotating shaft 13 and the third rotating shaft 17 are parallel and spaced apart, as are the second rotating shaft 15 and the third rotating shaft 17. Since the first rotating shaft 13 and the second rotating shaft 15 overlap, the distances between the first rotating shaft 13 and the second rotating shaft 15 and the third rotating shaft 17 are equal. The concave side of the sliding guide part 111 faces the third rotating shaft 17, and the radius of curvature of the arc-shaped trajectory of the sliding guide part 111 is smaller than the distance between the first rotating shaft 13 and the third rotating shaft 17. The pressing part 16 is positioned close to the third rotating shaft 17.
[0030] Reference Figure 4 , Figure 5 , Figure 6 and Figure 7 The working principle of the locking mechanism 10 is as follows: when the axis of the first rotating shaft 13 and the axis of the second rotating shaft 15 coincide, the first rotating part 12 and the second rotating part 14 can be controlled to swing rapidly around the first rotating shaft 13 synchronously, thereby driving the pressing part 16 to swing rapidly around the first rotating shaft 13, achieving rapid initial pressing. This process is the rapid swing stage, that is... Figures 5 to 6 The process of movement. Figure 5 The locking mechanism 10 is in the fully unlocked state. Figure 6 This is the initial clamping state of the locking mechanism. When the clamping part 16 swings rapidly until it contacts the object being clamped, the movement of the second rotating part 14 is continuously controlled so that the axis of the second rotating shaft 15 gradually misaligns with the axis of the first rotating shaft 13. The clamping part 16 continues to rotate around the first rotating shaft 13, thus achieving continuous clamping of the object by the clamping part 16. This stage is the continuous pressure stage, i.e. Figures 6 to 7 The process of movement, Figure 7This represents the final compressed state. During the rapid oscillation phase and the continuous pressurization phase, the pressing part 16 rotates in the same direction around the first rotating shaft 13. During the continuous pressurization phase, when controlling the movement of the second rotating part 14 for continuous pressing, by controlling the distance from the point of force application on the second rotating part 14 to the third rotating shaft 17 to be greater than the distance between the first rotating shaft 13 and the third rotating shaft 17, according to the principle of energy conservation, the work done on the point of force application on the second rotating part 14 is the same as the work done by the pressing part 16 on the object being pressed. Furthermore, the movement distance of the point of force application is a combination of the rotation around the third rotating shaft 17 and the rotation around the first shaft. The movement distance of the pressing part 16 is relatively small, which can amplify the pressing force, thereby ensuring reliable pressing. When the pressing part 16 is subjected to the impact force from vehicle vibration, the first rotating part 12, the second rotating part 14, and the fixed part 11 can share the vibration force, minimizing deformation of the locking mechanism 10, thus solving the problem of jamming that easily occurs during the locking and unlocking process of the locking mechanism 10.
[0031] Reference Figure 4 Preferably, when the axis of the first rotating shaft 13 is misaligned with the axis of the second rotating shaft 15, the line connecting the first rotating shaft 13 and the second rotating shaft 15 serves as a reference line. When the pressing part 16 finally presses against the object being pressed, the angle α between the tangent of the second rotating shaft 15 at the position of the arc-shaped trajectory of the sliding guide part 111 and the reference line is less than the self-locking angle, thus achieving the self-locking effect of the locking mechanism. The self-locking angle is related to the coefficient of friction of the contact surfaces of the second rotating shaft 15 and the sliding guide part 111.
[0032] Reference Figure 2 , Figure 3 and Figure 8 In this embodiment, the first rotating part 12 is a first rotating plate, the second rotating part 14 is a second rotating plate, and the first contact surface 142 is located on the second rotating plate. Two first rotating plates and two second rotating plates are arranged in parallel. The two second rotating plates are located between the two first rotating plates, thereby shortening the length of the second rotating shaft 15, making it less prone to uneven load distribution on the second rotating shaft 15, and ensuring the stable operation of the locking mechanism 10. The fixing part 11 includes a first fixing plate 112, a second fixing plate 113, and a third fixing plate 114. The first fixing plate 112 and the second fixing plate 113 are parallel, with two first fixing plates 112 arranged in parallel, and the second fixing plate 113 located between the two first fixing plates 112. The third fixing plate 114 is fixedly connected to both first fixing plates 112 and the second fixing plate 113. Preferably, the first fixing plate 112, the second fixing plate 113, and the third fixing plate 114 are integrally formed. The first fixing plate 112 and the first rotating plate are rotatably connected via the first rotating shaft 13. The second fixed plate 113 and the second rotating plate are rotatably connected via the second rotating shaft 15. The sliding guide part 111 is provided on the second fixed plate 113. The first contact surfaces 142 of the two second rotating plates are slidably attached to the second fixed plate 113.
[0033] Reference Figure 2 and Figure 3 Preferably, since the second rotating shaft 15 is guided only by the sliding guide portion 111, the frictional force experienced by the second rotating shaft 15 in the sliding guide portion 111 is unilateral. Therefore, in this embodiment, the second rotating shaft 15 is rolled within the sliding guide portion 111, transforming the sliding friction of the second rotating shaft 15 into rolling friction, reducing the frictional force and facilitating the locking and unlocking of the locking mechanism 10. Furthermore, to reduce frictional resistance, a lubricating element 151 is embedded on the second rotating shaft 15. In this embodiment, the lubricating element 151 is a graphite column. The lubricating element 151 abuts against the shaft hole 141 of the second rotating portion 14.
[0034] Reference Figure 1 The second rotating part 14 has a second contact surface 144. The first contact surface 142 and the second contact surface 144 are arranged opposite to each other. The second contact surface 144 slides in contact with the first rotating part 12, which can improve the structural compactness of the locking mechanism 10.
[0035] Reference Figure 2 , Figure 3 and Figure 4 During the continuous pressurization phase, that is, as the axis of the second rotating shaft 15 gradually separates from the axis of the first rotating shaft 13, the first rotating part 12 and the second rotating part 14 rotate relative to each other at a small angle. Specifically, the second rotating part 14 rotates relative to the first rotating part 12 around the third rotating shaft 17. To reduce the frictional resistance between the second contact surface 144 and the first rotating part 12, this embodiment provides a second clearance groove 145 on the second contact surface 144. The projection of the first rotating part 12 on the second contact surface 144 covers the second clearance groove 145. The second clearance groove 145 reduces the contact area between the second contact surface 144 and the first rotating part 12, while allowing air to enter between the first rotating part 12 and the second rotating part 14, preventing vacuum suction between the first rotating part 12 and the second rotating part 14 from causing jamming during locking and unlocking, thus improving the smoothness of the locking mechanism 10's operation.
[0036] Reference Figure 1Multiple first clearance grooves 143 and multiple second clearance grooves 145 are provided. The area ratio of all first clearance grooves 143 to the area of the first contact surface 142 is a first ratio; the area ratio of all second clearance grooves 145 to the area of the second contact surface 144 is a second ratio; preferably, the first ratio is greater than the second ratio. Because the arcuate trajectory of the sliding guide portion 111 is relatively long, the contact area between the first contact surface 142 and the fixed portion 11 is relatively large. Furthermore, because the second rotating shaft 15 can slide or roll along the arcuate trajectory of the sliding guide portion 111, the swing amplitude of the second rotating portion 14 relative to the fixed portion 11 is also greater than the swing amplitude of the first rotating portion 12 relative to the fixed portion 11. Therefore, the relative motion friction between the second rotating portion 14 and the fixed portion 11 is the key to the locking and unlocking jamming of the locking mechanism 10. This application sets the first ratio to be greater than the second ratio, which can reduce the contact area between the second rotating portion 14 and the fixed portion 11 to a greater extent, thereby reducing friction. At the same time, the opening area of the second clearance groove 145 on the second mating surface 144 is reduced, thereby reducing the processing complexity.
[0037] Reference Figure 1 At least some of the first clearance grooves 143 are parallel to each other, and at least some of the second clearance grooves 145 are parallel to each other. Preferably, the distance between two adjacent parallel first clearance grooves 143 is less than the distance between two adjacent parallel second clearance grooves 145, and the groove width of the first clearance groove 143 is greater than the groove width of the second clearance groove 145, so that the first ratio is greater than the second ratio.
[0038] Preferably, the first clearance groove 143 is arranged in a mesh pattern, and the second clearance groove 145 is arranged in a mesh pattern. This improves the airflow between the first contact surface 142 and the second contact surface 144, and minimizes the risk of vacuum suction between the second rotating part 14 and the fixed part 11 and the first rotating part 12, which could lead to locking and unlocking jamming.
[0039] Reference Figure 9 and Figure 10In some embodiments, the locking mechanism 10 further includes a drive unit 18, which includes a sliding drive member 181 and a fourth rotating shaft 182. The piston rod of the sliding drive member 181 is rotatably connected to the second rotating part 14 via the fourth rotating shaft 182. The third rotating shaft 17 is parallel to the fourth rotating shaft 182 and has a gap between them. The gap between the fourth rotating shaft 182 and the third rotating shaft 17 is greater than the gap between the first rotating shaft 13 and the third rotating shaft 17. Thus, during the continuous pressurization phase, when the piston rod of the sliding drive member 181 pushes the second rotating part 14 to move, the stroke of the piston rod is greater than the stroke of the pressing part 16. Therefore, according to the principle of energy conservation, the work done by the piston rod on the second rotating part 14 is equal to the work done by the pressing part 16 on the object being pressed. As a result, the pressure of the pressing part 16 on the object being pressed is much greater than the thrust of the piston rod, thereby amplifying the thrust and improving the stability of the pressing. Preferably, the angle between the extension / retraction direction of the piston rod of the sliding drive member 181 and the tangent direction at any position on the sliding guide 111 is less than a threshold value. That is, when the pressing part 16 presses down, the piston rod of the sliding drive member 181 tilts upward to push the fourth rotating shaft 182. The direction of the vibration force received by the pressing part 16 is nearly parallel to the extension / retraction direction of the piston rod of the sliding drive member 181. As a result, the torque received by the piston rod of the sliding drive member 181 is small, which can reduce the probability of the piston rod of the sliding drive member 181 bending, thereby improving the service life and reducing the risk of locking and unlocking jamming of the locking mechanism 10.
[0040] Reference Figure 4 , Figure 5 , Figure 6 and Figure 7 When the second rotating shaft 15 moves away from the first rotating shaft 13 along the arc-shaped trajectory of the sliding guide 111, the direction of rotation of the first rotating part 12 around the first rotating shaft 13 is the first rotation direction; the first rotation direction refers to clockwise or counterclockwise rotation. Figure 7 In the shown perspective, the first option is counterclockwise. The locking mechanism 10 also includes a limiting part 19; the limiting part 19 is fixedly connected to the second rotating part 14, preferably, the limiting part 19 and the second rotating part 14 are integrally formed. When the axis of the first rotating shaft 13 coincides with the axis of the second rotating shaft 15, the limiting part 19 abuts against the fixing part 11 to limit the angle of rotation of the second rotating part 14 around the first rotating shaft 13 in a second rotational direction, the second rotational direction being opposite to the first rotational direction, that is, in... Figure 5 In the perspective shown, the second rotation direction is clockwise. The state where both the first rotating shaft 13 and the fourth rotating shaft 182 are located on the extension line of the piston rod of the sliding drive member 181 is a critical jamming state. If the second rotating part 14 rotates around the first rotating shaft 13 in the second rotation direction to or beyond the critical jamming state, the sliding drive member 181 will be unable to drive the second rotating part 14 to rotate in the first rotation direction by pushing the fourth rotating shaft 182. That is, in... Figure 5The device cannot rotate counterclockwise from the viewpoint shown. This application limits the rotation angle of the second rotating part 14 by limiting the limiting part 19, which can prevent the locking mechanism 10 from reaching or exceeding the jamming threshold, thereby ensuring the reliable operation of the locking mechanism 10.
[0041] Preferably, the pressing part 16, the first rotating part 12, and the second rotating part 14 are rotatably connected via a third rotating shaft 17. The pressing part 16 includes a rotating block 161 and a pressing plate 162; the rotating block 161 and the pressing plate 162 are integrally formed; the rotating block 161 is rotatably connected to the second rotating part 14 and the first rotating part 12 respectively via the third rotating shaft 17; the second rotating part 14 or the first rotating part 12 can abut against the pressing plate 162 to limit the angle of rotation of the pressing plate 162 around the third rotating shaft 17 in the first rotation direction. Thus, according to the actual pressing conditions, the surface of the first rotating part 12 or the second rotating part 14 used to abut against the pressing plate 162 is set to be parallel to the surface of the object being pressed, so that a relatively close surface contact between the pressing part 16 and the object being pressed can be achieved.
[0042] Example 2:
[0043] Reference Figure 11 and Figure 12 This application provides a power battery box assembly, including a locking mechanism 10, a base bracket 20, a battery box frame, and a power battery, as described in Embodiment 1. The fixing part 11 of the locking mechanism 10 is fixedly connected to the base bracket 20, for example, using bolts. The clamping part 16 of the locking mechanism 10 presses the battery box frame onto the base bracket 20. The power battery is installed in the battery box frame.
[0044] Reference Figure 10 and Figure 11 The drive unit 18 is connected to the base bracket 20. Specifically, the sliding drive member 181 is rotatably connected to the base bracket 20. Thus, during the movement of the fourth rotating shaft 182 driven by the sliding drive member 181, the piston rod of the sliding drive member 181 swings within a preset angle range. The preset angle can be set according to actual needs.
[0045] Example 3:
[0046] Reference Figure 10 , Figure 11 and Figure 12 This application provides a vehicle that includes the power battery pack assembly of Embodiment 2. When the power battery pack assembly is installed on the vehicle, the piston rod of the sliding drive 181 is tilted upward to make full use of the internal space of the base bracket 20.
[0047] Those skilled in the art will understand that the above embodiments are specific examples of implementing this disclosure, and in practical applications, various changes can be made in form and detail without departing from the scope of this disclosure.
Claims
1. A locking mechanism, characterized in that, The locking mechanism includes: A fixing part is provided with a sliding guide part; the extension trajectory of the sliding guide part is arc-shaped. First rotating part; The first rotating shaft is rotatably connected to the fixed part via the first rotating shaft; the projection of the first rotating shaft along its own axial direction is located on the arc-shaped trajectory of the sliding guide part. The second rotating part has a first contact surface; the first contact surface is slidably contacted with the fixing part; a first clearance groove is provided on the first contact surface; the projection area of the fixing part on the first contact surface covers part of the first clearance groove. The second rotating part is rotatably connected to the fixed part via the second rotating shaft; the second rotating shaft is movably connected to the fixed part; the second rotating shaft moves along the arc-shaped trajectory of the sliding guide part; A clamping part, wherein the clamping part is connected to the first rotating part or the second rotating part; The third rotating shaft connects the first rotating part and the second rotating part; the first rotating shaft and the third rotating shaft are parallel and spaced apart; the second rotating shaft and the third rotating shaft are parallel and spaced apart; the concave side of the sliding guide is positioned towards the third rotating shaft; the radius of curvature of the arc trajectory of the sliding guide is smaller than the distance between the first rotating shaft and the third rotating shaft; the pressing part is positioned close to the third rotating shaft.
2. The locking mechanism according to claim 1, characterized in that, The second rotating part has a second contact surface; the first contact surface and the second contact surface are disposed opposite to each other; the second contact surface is slidably contacted with the first rotating part.
3. A locking mechanism according to claim 2, characterized in that, A second clearance groove is provided on the second mating surface; the projection of the first rotating part on the second mating surface covers part of the second clearance groove.
4. A locking mechanism according to claim 3, characterized in that, Multiple first clearance slots are provided; multiple second clearance slots are provided; the area ratio of all first clearance slots to the area of the first mating surface is a first ratio; the area ratio of all second clearance slots to the area of the second mating surface is a second ratio; the first ratio is greater than the second ratio.
5. A locking mechanism according to claim 4, characterized in that, At least some of the first clearance slots are parallel to each other; at least some of the second clearance slots are parallel to each other; the distance between two adjacent parallel first clearance slots is less than the distance between two adjacent parallel second clearance slots; the width of the first clearance slot is greater than the width of the second clearance slot.
6. A locking mechanism according to claim 1, characterized in that, The locking mechanism further includes a driving unit; the driving unit includes a sliding driving member and a fourth rotating shaft; the piston rod of the sliding driving member is rotatably connected to the second rotating part through the fourth rotating shaft; the third rotating shaft is parallel to the fourth rotating shaft and has a distance between them; the distance between the fourth rotating shaft and the third rotating shaft is greater than the distance between the first rotating shaft and the third rotating shaft.
7. A locking mechanism according to claim 6, characterized in that, When the second rotating shaft moves away from the first rotating shaft along the arc-shaped trajectory of the sliding guide, the direction of rotation of the first rotating part around the first rotating shaft is the first rotation direction; The locking mechanism further includes a limiting part; the limiting part is fixedly connected to the second rotating part; when the axis of the first rotating shaft coincides with the axis of the second rotating shaft, in the path of the second rotating part rotating around the first rotating shaft, the limiting part can abut against the fixed part to limit the angle of the second rotating part rotating around the first rotating shaft in a second direction; the second direction is opposite to the first direction.
8. A locking mechanism according to claim 7, characterized in that, The clamping part, the first rotating part, and the second rotating part are rotatably connected by the third rotating shaft; The pressing part includes a rotating block and a pressing plate; the rotating block and the pressing plate are integrally formed; the rotating block is rotatably connected to the second rotating part and the first rotating part respectively through the third rotating shaft; in the path of the rotating block rotating around the axis of the third rotating shaft, the second rotating part or the first rotating part can abut against the pressing plate to limit the angle of rotation of the pressing plate around the third rotating shaft in the first rotation direction.
9. A power battery pack assembly, characterized in that, The power battery pack assembly includes: The locking mechanism according to any one of claims 1-8; The base bracket, wherein the fixing part of the locking mechanism is fixedly connected to the base bracket; The battery box frame, wherein the pressing part of the locking mechanism presses the battery box frame onto the base bracket; A power battery, which is installed in the battery box frame.
10. A vehicle, characterized in that, The vehicle includes the power battery pack assembly as described in claim 9.