Bottom support self-locking pressing device

Abstract

The invention relates to the technical field of vehicle locking equipment, in particular to a bottom support self-locking pressing device which comprises a pressing component and a locking component, the pressing component comprises a rotating part and a pressing part, the pressing component has a recovery state and a pressing state, and in the pressing state, the pressing part extends out through an extending opening, and the lower side of the pressing part can abut against a fixed part; the pushing mechanism comprises a driver and a pushing piece, the pushing piece comprises a pushing part, the driver can drive the pushing part to move in the extending direction of the extending opening, the pushing part can push the rotating part to rotate, the pushing piece further comprises a wedge-shaped part, the pressing part comprises a body block and a pressing block, and a binding face is arranged on the upper side of the pressing block; the wedge-shaped part can abut against the attaching face, and a first spacing distance is arranged between the center of the pressing block and the hinge point of the rotating part in the width direction of the rotating part. Therefore, the problems that an existing battery locking mechanism is prone to bounce off under the counter-acting force during locking, and locking is unstable are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle locking equipment, and in particular to a bottom support self-locking and pressing device. Background Art

[0002] While electric vehicles are rapidly developing, battery recharging remains a significant challenge. Battery replacement offers a convenient, quick, and easy way to quickly recharge a vehicle. For removable batteries, securing and locking the battery pack to the vehicle is crucial for safe operation.

[0003] Existing battery pack fixing locks usually use a locking mechanism to press the fixed part of the battery pack on the frame to complete the pressing and fixing operation. However, due to the large mass of the battery pack, a large force is usually required to ensure stable fixation. Therefore, the driving force of the locking structure is also usually large. However, the large driving force also causes the locking structure to easily bounce off due to the impact at the moment of contact when it contacts the locked part, resulting in unstable locking and easy damage to the locking structure. Summary of the Invention

[0004] In order to solve the problem that the existing battery locking mechanism is easily bounced off by the reaction force when locked and the locking is unstable, the present invention provides a bottom bracket self-locking pressing device, comprising: a pushing mechanism, a pressing member and a shell, the shell has a accommodating space inside, the shell is provided with a projection connected to the accommodating space, the pressing member is L-shaped, and comprises a rotating part and a pressing part, the first end of the rotating part is hinged to the inside of the shell, the pressing part is provided at the second end of the rotating part and extends in a direction away from the rotating part, and the pressing part can extend out of the shell through the projection; the pressing member comprises a retracted state and a pressing state, in which the pressing member is located inside the shell in the retracted state and in the pressing state state, the clamping part extends out through the extension port and the lower side of the clamping part can abut against the fixed part; the pushing mechanism includes a driver and a pushing member, the pushing member includes a pushing part, the driver can drive the pushing part to move along the extension direction of the extension port, and the pushing part can push the rotating part to rotate, so that the clamping member can switch between the recovery state and the clamping state; the pushing member also includes a wedge-shaped part, the clamping part includes a main body block and a clamping block arranged on the side away from the rotating part, the upper side of the clamping block is provided with a fitting surface, the wedge-shaped part can abut against the fitting surface, and a first spacing distance is provided between the center of the clamping block and the hinge point of the rotating part along the width direction of the rotating part.

[0005] In some embodiments, the upper top surface of the compression block is raised above the upper top surface of the body block.

[0006] In some embodiments, the main body block is provided with a first groove, the pressing block is hinged in the first groove, the top of the pressing block protrudes from the opening of the first groove, the top of the pressing block includes an extension structure extending along the width direction, and a gap is provided between the extension structure and the first groove, and the top width of the pressing block is greater than the width of the first groove.

[0007] In some embodiments, the pressing member also includes an abutment block, which is used to abut on the fixed part. The abutment block is arranged on the side of the main body block facing the fixed part, and the abutment block protrudes from the main body block; in the pressing state, the spacing distance between the lower side surface of the abutment block and the fitting surface along the vertical direction is L1, and the spacing distance between the fitting surface and the fixed part along the vertical direction is L2, L1>L2.

[0008] In some embodiments, the main body block is also provided with a second groove, the abutment block is hinged in the second groove, the lower side of the abutment block protrudes from the opening of the second groove, the lower side of the abutment block extends along its width direction, and a gap is provided between the second groove, and the width of the lower side of the abutment block is greater than the width of the second groove.

[0009] In some embodiments, a support plate extending in a horizontal direction is fixedly provided in the housing, the upper side of the wedge-shaped portion is in contact with the lower side of the support plate, and the wedge-shaped portion can move along the extension direction of the support plate.

[0010] In some embodiments, the lower side of the wedge-shaped portion is configured to gradually move away from the support plate in a direction away from the extension port, and the maximum distance between the lower side of the support plate and the support plate is greater than the spacing distance between the upper side of the pressing block and the support plate.

[0011] In some embodiments, the distance between the hinge point of the rotating part and the housing and the rotation center of the pressing block is L3, and the distance between the hinge point of the rotating part and the housing and the rotation center of the abutting block is L4, 0.7 <L3 / L4<0.9。

[0012] In some embodiments, the driver includes a driving cylinder connected to the pushing member, and a driving end of the driving cylinder is capable of moving in a horizontal direction.

[0013] In some embodiments, the driver further comprises an elastic member, a first end of the elastic member is connected to the pressing member, a second end of the elastic member is connected to the housing, and the elastic member is in a stretched state.

[0014] To solve the problem that the existing battery locking mechanism is easily bounced by the reaction force during locking and the locking is unstable, the present invention has the following advantages:

[0015] In the above technical solution, the pushing member of the pushing mechanism is used to push the clamping member to rotate, so that the clamping member can be extended through the opening on the shell, converted from the retracted state to the clamping state, and abut against the fixed member. With the help of the pushing force of the pushing mechanism, the clamping member can be continuously applied with a force toward the fixed member in the clamping state, thereby achieving the purpose of fixing the fixed member. At the same time, since the clamping member can rotate along the hinge point, when the clamping member is converted to the clamping state, due to the inertia of the action, when the force is converted from the driving force to the static force, the conversion of the force will cause it to contact with the fixed member. If the fixed part collides, the reaction force of the collision will cause the clamping member to rebound, which will make the locking unstable. In the above technical solution, the fitting state between the wedge-shaped part of the pushing mechanism and the clamping block, and the first spacing distance between the center of the clamping block and the hinge point of the rotating part along the width direction of the rotating part are utilized, so that the action force between the wedge block and the clamping block forms a force torque opposite to the rebound force, and the action direction of the torque is not the driving direction of the driver. At this time, the action force of the torque comes from the structural strength of the wedge-shaped part. Therefore, it can play a better role in preventing rebound and make the locking more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a bottom support self-locking and pressing device according to an embodiment is shown;

[0017] Figure 2 A schematic diagram showing the structure of a bottom support self-locking and pressing device installed on a vehicle body according to an embodiment;

[0018] Figure 3 A schematic cross-sectional structure diagram of a bottom support self-locking and pressing device according to an embodiment is shown;

[0019] Figure 4 A schematic cross-sectional view of a bottom support self-locking and pressing device in a retracted state is shown;

[0020] Figure 5 A schematic structural diagram of a first intermediate state of a bottom support self-locking and pressing device according to an embodiment of the present invention is shown;

[0021] Figure 6 A schematic structural diagram of a second intermediate state of a bottom support self-locking and pressing device according to an embodiment of the present invention is shown;

[0022] Figure 7 A schematic structural diagram of a third intermediate state of a bottom support self-locking and pressing device according to an embodiment of the present invention is shown;

[0023] Figure 8 A structural schematic diagram of a bottom support self-locking clamping device in a clamping state according to an embodiment is shown.

[0024] Figure markings: 10-pushing mechanism; 11-pushing member; 111-pushing portion; 112-wedge-shaped portion; 12-driver; 121-driving cylinder; 122-elastic member; 20-pressing member; 21-rotating portion; 22-pressing portion; 221-main body block; 2211-first groove; 2212-second groove; 222-pressing block; 223-abutting block; 30-housing; 31-accommodating space; 32-extending port; 33-support plate; 100-fixed member; 200-frame; 300-bottom support self-locking pressing device. DETAILED DESCRIPTION

[0025] 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 implement the present disclosure, rather than to imply any limitation on the scope of the present disclosure.

[0026] As used herein, the term "including" 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 "based, at least in part, 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." Terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "vertical," "horizontal," "transverse," and "longitudinal" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily intended to better describe the present application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationships. For example, the term "on" may, in certain circumstances, be used to indicate a dependency or connection relationship. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances. Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" are to 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 directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, 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 and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0027] This embodiment discloses a bottom support self-locking pressing device 300, such as Figure 1-8As shown, it may include: a pushing mechanism 10, a pressing member 20 and a shell 30, the shell 30 has an accommodating space 31 inside, the shell 30 is provided with an extension port 32 connected to the accommodating space 31, the pressing member 20 is L-shaped, and includes a rotating portion 21 and a pressing portion 22, a first end of the rotating portion 21 is hinged to the inside of the shell 30, the pressing portion 22 is provided at the second end of the rotating portion 21, and extends in a direction away from the rotating portion 21, and the pressing portion 22 can extend out of the shell 30 through the extension port 32; the pressing member 20 includes a recovery state and a compression state, in the recovery state, the pressing member 20 is located inside the shell 30, in the compression state, the pressing portion 22 extends through the extension port 32 and the lower side of the pressing portion 22 can abut against the fixed On the fixed member 100; the pushing mechanism 10 includes a driver 12 and a pushing member 11, the pushing member 11 includes a pushing portion 111, the driver 12 can drive the pushing portion 111 to move along the extension direction of the protruding port 32, and the pushing portion 111 can push the rotating portion 21 to rotate, so that the clamping member 20 can switch between the recovery state and the clamping state; the pushing member 11 also includes a wedge-shaped portion 112, the clamping portion 22 includes a main body block 221 and a clamping block 222 arranged on the side away from the rotating portion 21, the upper side of the clamping block 222 is provided with a fitting surface, the wedge-shaped portion 112 can abut against the fitting surface, and a first spacing distance is provided between the center of the clamping block 222 and the hinge point of the rotating portion 21 along the width direction of the rotating portion 21.

[0028] It should be noted that the above technical solution of the present invention can be mainly used for fixing the battery pack on the automobile. The battery can be fixed more stably by setting a plurality of the above-mentioned bottom bracket self-locking clamping devices 300, wherein the shell 30 can be fixed on the frame 200, and the force is applied to the battery pack skeleton through the clamping member 20, so as to achieve the purpose of fixing the battery pack on the frame 200. Similarly, the above-mentioned device of the present application can also be used in similar situations where disassembly and fixation are required.

[0029] In the above technical solution, the pushing member 11 of the pushing mechanism 10 is used to push the pressing member 20 to rotate, so that the pressing member 20 can be extended through the opening on the housing 30 and converted from the retracted state to the compressed state. Figure 4-Figure 8 The process of gradual changes in the internal structure of the bottom support self-locking pressing device 300 during the transition from the recovery state to the pressing state is shown (where Figure 8The figure shows that the clamping member is in an over-pressure state, which cannot be achieved in actual use. It is used to exemplify that sufficient force can be applied to the fixed member by over-pressure). During this process, the clamping member 20 gradually moves and finally abuts against the fixed member 100. With the help of the pushing force of the pushing mechanism 10, in the clamping state, the clamping member 20 can be continuously applied with a force toward the fixed member 100, thereby achieving the purpose of fixing the fixed member 100. At the same time, since the clamping member 20 can rotate along the hinge point, when the clamping member 20 is converted to the clamping state, due to the inertia of the movement, when the force is converted from the driving force to the static force, the conversion of the force will cause it to When colliding with the fixed part 100, the reaction force of the collision will cause the clamping member 20 to rebound, which will make the locking unstable. In the above technical solution, the fitting state between the wedge-shaped portion 112 of the pushing mechanism 10 and the clamping block 222, and the first spacing distance between the center of the clamping block 222 and the hinge point of the rotating part 21 along the width direction of the rotating part 21 are utilized, so that the action force between the wedge block and the clamping block 222 forms a force torque opposite to the rebound force, and the action direction of the torque is not the driving direction of the driver 12. At this time, the action force of the torque comes from the structural strength of the wedge-shaped portion 112. Therefore, it can play a better role in preventing rebound and make the locking more stable.

[0030] The rotating portion 21 and the pressing portion 22 can be provided as an integrated whole, or as separate parts fixedly connected in an appropriate manner. The driver 12 can be a driving device or component capable of generating a driving force in a linear direction, such as a driving cylinder 121, a driving oil cylinder, or a transmission structure driven by an electric motor, wherein the driving cylinder 121 can have a faster response speed, while the driving oil cylinder can generate a larger driving force. The rotating portion 21 can be rotatably connected to the outer shell 30 by means of hinges, rotating pins, and other articulated parts. Specifically, it can be hinged to the inner wall of the outer shell 30. Since the rotating portion 21 is in an inclined state in the opposite direction of the rotation in the recovered state, in order to ensure a stable pushing force, a structure extending in the horizontal direction can be included, so that the rotating portion 21 can be directly pushed toward the side of the pushing member 11. The lower side surface of the wedge-shaped portion 112 can be a plane or an inclined surface.

[0031] Furthermore, in order to ensure that the wedge block can be accurately pressed against the fitting surface, Figure 3-8 As shown, the upper top surface of the pressing block 222 protrudes from the upper top surface of the main body block 221.

[0032] Furthermore, in order to make the pressing block 222 fit more closely to the wedge-shaped portion 112 and ensure that the wedge-shaped portion 112 can exert sufficient force on the pressing block 222, as shown in FIG. Figure 3-8As shown, the main body block 221 is provided with a first groove 2211, and the pressing block 222 is hinged in the first groove 2211. The top of the pressing block 222 protrudes from the opening of the first groove 2211. The top of the pressing block 222 includes an extension structure extending in the width direction. A gap is provided between the extension structure and the first groove 2211. The top width of the pressing block 222 is greater than the width of the first groove 2211. By enabling the pressing block 222 to rotate relative to the main body block 221, when the driver 12 pushes the wedge-shaped portion 112 to gradually approach and release the pressing block 222, the pressing block 222 can be pushed to rotate relative to the main body block 221. At the same time, the contact surface of the wedge-shaped portion 112 can be rotated toward the lower side of the wedge-shaped portion 112. Subsequently, as the wedge-shaped portion 112 continues to move and press the pressing block 222, the pressing block 222 can always maintain contact with the wedge-shaped portion 112 due to the action of friction. Among them, the spacing between the extension structure and the first groove 2211 can ensure that the clamping block 222 has a certain rotation space, and at the same time can prevent the clamping block 222 from excessively rotating to a position where the wedge-shaped portion 112 cannot contact due to the lack of the pushing action of the wedge-shaped portion 112 when the wedge-shaped portion 112 is retracted (in the retracted state), that is, as shown in the figure, preventing it from excessively rotating forward or backward.

[0033] Since only a portion of the lower side of the pressing portion 22 of the pressing mechanism actually abuts against the fixed member 100, in order to ensure that the pressing member 20 can abut against the fixed member 100 and can generate a large pressing force, such as Figure 3-8 As shown, the clamping member 20 also includes abutment block 223, which is used to abut on the fixed part 100. The abutment block 223 is arranged on the side of the main body block 221 facing the fixed part 100, and the abutment block 223 protrudes from the main body block 221; in the clamping state, the vertical spacing distance between the lower side surface of the abutment block 223 and the fitting surface is L1, and the vertical spacing distance between the fitting surface and the fixed part 100 is L2, L1>L2.

[0034] The raised structure of the abutment block 223 is utilized so that the abutment block 223 contacts the fixed part 100 preferentially, and the vertical spacing distance between the lower side surface of the abutment block 223 and the fitting surface is slightly larger than the vertical spacing distance between the fitting surface and the fixed part 100, that is, L1>L2. This enables the clamping portion 22 of the clamping member 20 to produce a certain elastic deformation under the action of the pushing member 11 and the fixed part 100, so that the clamping force comes not only from the force of the driver 12, but also from the elastic deformation force of the clamping portion 22, thereby ensuring the clamping effect.

[0035] Since the motion trajectory of the pressing member 20 is an arc motion around the hinge point of the rotating portion 21, the side of the pressing member 20 used to press the fixed member 100 also moves along the arc. If the fixed plane relative to the pressing member 20 is in contact with the fixed member 100, during the contact process with the fixed member 100, Figure 4-5 As shown, the plane close to the inner side will first contact the fixed part 100, and in the process of gradually pressing the fixed part 100, the part of the plane close to the inner side will be subjected to a greater extrusion force, while the force in the distal direction is smaller. Not only is the force not balanced, but long-term use will cause uneven wear of the plane and even failure.

[0036] As a further embodiment, Figure 3-8 As shown, the main body block 221 is also provided with a second groove 2212, the abutment block 223 is hinged in the second groove 2212, the lower side of the abutment block 223 protrudes from the opening of the second groove 2212, the lower side of the abutment block 223 extends along its width direction, and a gap is provided between it and the second groove 2212, and the width of the lower side of the abutment block 223 is greater than the width of the second groove 2212.

[0037] The hinged arrangement of the second groove 2212 and the abutment block 223 allows the abutment block 223 to rotate relative to the main body block 221. When the abutment block 223 contacts the fixed part 100, it can rotate so that the lower side of the abutment block 223 directly fits the fixed part 100. Before reaching the clamping state, the abutment block 223 will remain different, while the main body block 221 can rotate relative to the abutment block 223, so that the clamping force gradually increases, thereby ensuring the clamping effect. In order to ensure that the abutment block 223 exerts a balanced force on the fixed part 100, the contact surface between the abutment block 223 and the fixed part 100 can have as large an area as possible, thereby ensuring balanced and stable force application.

[0038] Since the wedge-shaped portion 112 is a movable component, its supporting force mainly comes from the movable part of the driver 12, and its structural strength is relatively low. Moreover, after long-term use, it may be deformed due to long-term stress, and even become unable to move. In order to avoid the above situation, as shown in FIG. Figure 3-8 As shown, a support plate 33 extending in the horizontal direction is fixedly provided in the housing 30 , the upper side of the wedge-shaped portion 112 is in contact with the lower side of the support plate 33 , and the wedge-shaped portion 112 can move along the extension direction of the support plate 33 .

[0039] The support plate 33 serves as a fixed structure within the housing 30. When its structural strength is sufficient, it can provide a large supporting force. At the same time, it can also guide the movement of the wedge-shaped portion 112. When the wedge-shaped portion 112 moves into place and applies force to the clamping block 222, the support plate 33 can provide supporting force for the wedge-shaped portion 112, so that the force is transmitted to the support plate 33. When the structural strength is large, the supporting function of the support plate 33 can provide sufficiently large supporting force for the wedge-shaped portion 112.

[0040] In order to avoid the wedge-shaped portion 112 from getting stuck during the force application process with the pressing mechanism and to be able to apply a larger force, such as Figure 3-8 As shown, the lower side of the wedge-shaped portion 112 is arranged to gradually move away from the support plate 33 in the direction away from the extension opening 32, and the maximum distance between the lower side of the support plate 33 and the support plate 33 is greater than the spacing distance between the upper side of the clamping block 222 and the support plate 33.

[0041] Due to the arrangement of the support plate 33, the wedge-shaped portion 112 is actually gradually inserted into the gap between the support plate 33 and the pressing block 222 during the movement. In order to make the process smoother, the lower side of the wedge-shaped portion 112 is as shown in FIG. Figure 3-8 As shown, its thickness gradually increases during the process of being gradually inserted between the support plate 33 and the pressing block 222. Compared with the shape with constant thickness, the process of applying its force gradually increases. On the side close to the protruding port 32, it can be set to be slightly smaller than the distance between the support plate 33 and the pressing block 222, while the other end is set to be larger than the distance between the support plate 33 and the pressing block 222, thereby achieving the effect of gradually increasing the pressing force and preventing blockage during movement.

[0042] Since the pressing member 20 needs to rotate, in order to reduce the space occupied above the pressed part in the retracted state, the distance between the hinge point of the rotating part 21 and the shell 30 and the rotation center of the pressing block 222 is L3, and the distance between the hinge point of the rotating part 21 and the shell 30 and the rotation center of the abutment block 223 is L4, 0.7 <L3 / L4<0.9。

[0043] The clamping member 20 actually takes its hinge point as the center, and forms two arc-shaped motion trajectories with its rotation center with the clamping block 222 and the rotation center with the abutting block 223 respectively. The accommodating space 31 in the shell 30 needs to be able to accommodate the above two motion trajectories. When the radius of the two motion trajectories differs greatly, a large space change demand will be generated in the longitudinal direction. For example, when the length of the rotating part 21 is shortened, L3 will decrease, while the length of L4 will still be long. In the clamping state, the longitudinal space occupied by the clamping member 20 is small, while in the retracted state, the longitudinal space occupied by the clamping member 20 is large. In response to this change, the accommodating space 31 in the shell 30 needs to occupy more in the longitudinal direction. For the vehicle, this will result in more occupation of the chassis space in the vehicle, causing the center of gravity of the vehicle to increase. When the lengths of L3 and L4 are similar, the hinge position can be lowered to reduce the demand for the upper space. More specifically, it can be set to 0.7 <L3 / L4<0.9。

[0044] As a specific implementation method, Figure 3 As shown, the driver 12 includes a driving cylinder 121 connected to the pusher 11, and the driving end of the driving cylinder 121 can move horizontally. When the driver 12 only includes the driving cylinder 121, the wedge-shaped portion 112 can be linked with the pressing block 222 (for example, by using a slide provided on the upper side of the pressing block 222 to enable the wedge-shaped portion 112 to slide relative to the pressing block 222, and when it moves to the edge of the slide, it can still drive the pressing block 222 to move), so that the driving cylinder 121 can drive the pressing block 222 to reciprocate.

[0045] Furthermore, if Figure 3 As shown, the driver 12 further includes an elastic member 122. A first end of the elastic member 122 is connected to the compression member 20, and a second end of the elastic member 122 is connected to the housing 30. The elastic member 122 is in a stretched state. In this embodiment, the driver 12 alone can be used to drive the compression member 20 from the retracted state to the compressed state, while the elastic tension of the elastic member 122 can be used to drive the compression member 20 from the compressed state to the retracted state.

[0046] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present disclosure, and that in actual applications, various changes may be made thereto in form and detail without departing from the scope of the present disclosure.

Claims

1. A bottom support self-locking pressing device, characterized in that: The bottom support self-locking pressing device includes: A pushing mechanism, a pressing member, and a housing, wherein the housing has an interior containing a storage space and the housing is provided with an extension opening communicating with the storage space; the pressing member is L-shaped and includes a rotating portion and a pressing portion; a first end of the rotating portion is hinged to the interior of the housing; the pressing portion is provided at a second end of the rotating portion and extends away from the rotating portion; the pressing portion can extend out of the housing through the extension opening; The pressing member includes a retracted state and a pressing state, wherein in the retracted state, the pressing member is located inside the housing, and in the pressing state, the pressing portion extends through the extension port and the lower side of the pressing portion can abut against the fixed member; The pushing mechanism includes a driver and a pushing member, the pushing member includes a pushing portion, the driver can drive the pushing portion to move along the extension direction of the extension port, and the pushing portion can push the rotating portion to rotate, so that the pressing member can switch between the retracting state and the pressing state; The pushing member also includes a wedge-shaped portion, the clamping portion includes a main body block and a clamping block arranged on a side away from the rotating portion, the upper side of the clamping block is provided with a fitting surface, the wedge-shaped portion can abut against the fitting surface, and a first spacing distance is provided between the center of the clamping block and the hinge point of the rotating portion along the width direction of the rotating portion.

2. A bottom support self-locking pressing device according to claim 1, characterized in that: The upper top surface of the pressing block protrudes from the upper top surface of the main body block.

3. A bottom support self-locking pressing device according to claim 2, characterized in that: The main body block is provided with a first groove, the clamping block is hinged in the first groove, the top of the clamping block protrudes from the opening of the first groove, the top of the clamping block includes an extension structure extending along the width direction, and a gap is provided between the extension structure and the first groove, and the top width of the clamping block is greater than the width of the first groove.

4. The bottom support self-locking pressing device according to claim 1, characterized in that: The pressing member further includes an abutment block, the abutment block being used to abut against the fixed member, the abutment block being arranged on a side of the main body block facing the fixed member, and the abutment block protruding from the main body block; In the compressed state, the vertical distance between the lower side of the abutting block and the fitting surface is L1, and the vertical distance between the fitting surface and the fixed member is L2, where L1>L2.

5. The bottom support self-locking pressing device according to claim 4, characterized in that: The main body block is also provided with a second groove, the abutment block is hinged in the second groove, the lower side of the abutment block protrudes from the opening of the second groove, the lower side of the abutment block extends along its width direction, and a gap is provided between the lower side of the abutment block and the second groove, and the width of the lower side of the abutment block is greater than the width of the second groove.

6. The bottom support self-locking pressing device according to claim 1, characterized in that: A support plate extending in a horizontal direction is fixedly provided in the shell, the upper side surface of the wedge-shaped portion is in contact with the lower side surface of the support plate, and the wedge-shaped portion can move along the extending direction of the support plate.

7. A bottom support self-locking pressing device according to claim 6, characterized in that: The lower side of the wedge-shaped portion is arranged to gradually move away from the support plate in a direction away from the extension opening, and the maximum distance between the lower side of the support plate and the support plate is greater than the spacing distance between the upper side of the pressing block and the support plate.

8. The bottom support self-locking pressing device according to claim 1, characterized in that: The distance between the hinge point of the rotating part and the shell and the rotation center of the pressing block is L3, and the distance between the hinge point of the rotating part and the shell and the rotation center of the abutment block is L4, 0.7 <L3 / L4<0.9。 9. The bottom support self-locking pressing device according to claim 1, characterized in that: The driver comprises a driving cylinder connected to the pushing member, and a driving end of the driving cylinder can move in a horizontal direction.

10. The bottom support self-locking pressing device according to claim 9, characterized in that: The driver further includes an elastic member, a first end of the elastic member is connected to the pressing member, a second end of the elastic member is connected to the housing, and the elastic member is in a stretched state.

Images