Dustproof communication case

Abstract

The invention is applicable to the technical field of communication cases, and provides a dustproof communication case which comprises a case body, the case body comprises a vertical plate, a foldable side plate and a telescopic top plate, the foldable side plate comprises a plurality of side plate bodies, the side plate bodies are connected through flexible connecting sections, and the side plate bodies and the vertical plate are connected through flexible connecting sections; the sealing module comprises rotating shafts, and each rotating shaft is provided with a sealing plate; the supporting module comprises a mounting rod and an elastic clamping seat, two rotating seats are mounted on the mounting rod, a supporting rod is mounted on each rotating seat, and one end of each of the two supporting rods is mounted on the clamping rod. According to the device, through the telescopic structure, the occupied space during transportation can be effectively reduced, and therefore the transportation cost is reduced. In addition, the device is convenient to disassemble and assemble and easy to operate, heat dissipation adjustment can be carried out according to use requirements, dust accumulation in the device is reduced, and the later dust removal frequency of the device is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of communication chassis, and in particular relates to a dustproof communication chassis. Background Art

[0002] Communication chassis is a shell used to contain and protect communication equipment and its components, which is widely used in telecommunications, data transmission, broadcasting, networking and other communication systems. It not only provides physical protection, but also has good electromagnetic shielding performance to ensure the normal operation of internal electronic components and prevent external interference.

[0003] Most existing communication boxes adopt a fixed structure, that is, a box of fixed size is formed by plates to accommodate communication equipment. The fixed box structure will take up a large space during transportation, which will increase transportation costs and is not conducive to cost control. In addition, most of these communication boxes dissipate heat by opening holes in the side walls. Open holes will inevitably cause dust to enter. After long-term use, a lot of dust will accumulate inside the box, which is not conducive to the later maintenance and repair of communication equipment. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a dustproof communication chassis, aiming to solve the problems raised in the above background technology.

[0005] The embodiment of the present invention is implemented as follows: a dustproof communication chassis, comprising:

[0006] A chassis body, the chassis body comprising a vertical panel, a foldable side panel and a telescopic top panel, two vertical panels, two foldable side panels and two telescopic top panels are provided respectively, the left and right sides of the two vertical panels are connected to each other through the foldable side panels, the upper and lower ends of the two vertical panels are connected to each other through the telescopic top panel, and a box door is provided on one of the vertical panels, the foldable side panel comprises a plurality of side panel bodies, two adjacent side panel bodies are connected through a flexible connecting section, and the two side panel bodies at the two ends are respectively connected to the corresponding vertical panels through the flexible connecting sections, and each of the side panel bodies is provided with a heat dissipation port;

[0007] A sealing module, wherein the sealing module comprises a plurality of rotating shafts equidistantly mounted on the side plate body, and the side plate body is also provided with a control unit for driving the rotating shafts to rotate synchronously, each of the rotating shafts is provided with a sealing plate, and when each of the sealing plates is in a vertical state, two adjacent sealing plates abut against each other, and the assembly formed by each of the sealing plates completely covers the heat dissipation port;

[0008] A support module, wherein the support module is arranged between two vertical plates, and two groups of support modules are symmetrically arranged between the two vertical plates, the support module comprises a mounting rod installed on one vertical plate, and an elastic locking seat installed on the other vertical plate, two rotating seats are symmetrically installed on the mounting rod, and a support rod is rotatably installed on each of the two rotating seats, and one end of the two support rods away from the rotating seat is installed on the locking rod, and the support rod and the locking rod are rotationally matched, and the support rod is also connected to the control unit, and can drive the control unit to work by rotation.

[0009] A further technical solution is that the control unit includes a guide seat installed on the inner side of the side panel body, a sliding rod is slidably installed on the guide seat along the vertical direction, second racks are equidistantly distributed on the sliding rod, and a second transmission gear meshing with the second rack is installed on each rotating shaft on the same side panel body, a first rack is also arranged at one end of the sliding rod, and a first transmission gear cooperating with the first rack is also arranged on a support rod in the support module.

[0010] A further technical solution is that a drive box is provided on the vertical plate without a door, and a drive unit is provided in the drive box. When the locking rod is engaged with the elastic locking seat, the drive unit will be connected to the support rod equipped with the first transmission gear, and drive the support rod to rotate.

[0011] According to a further technical solution, two groups of driving units are provided, each group being used to drive the corresponding supporting rods in the supporting modules on both sides to rotate.

[0012] A further technical solution is that the driving unit includes a driving motor installed in a driving box, the output end of the driving motor is connected to a driving shaft, the driving shaft is connected to a connecting shaft via a sliding key, and the support rod on which the first transmission gear is installed is provided with a plug-in slot matching the connecting shaft at one end away from the rotating seat, and the driving box is also provided with an adjustment unit for driving the connecting shaft to perform linear movement along the axial direction of the driving shaft.

[0013] According to a further technical solution, the adjustment unit comprises a telescopic member installed in the chassis body, the telescopic end of the telescopic member is connected to an adjustment rod, the adjustment rod is connected to a connecting ring, and the connecting shaft is rotatably installed in the connecting ring.

[0014] According to a further technical solution, one end of the sliding rod is also connected to a connecting plate, the connecting plate is slidably mounted on the side plate body, and a return spring is also arranged between the connecting plate and the side plate body.

[0015] A dustproof communication chassis provided by an embodiment of the present invention is in a retracted state when it is to be transported. Specifically, the two telescopic top plates are in a retracted state, and the foldable side plates on both sides are folded into a plurality of V-shaped structures and retracted between the two vertical plates, and at this time, the clamping rod is not clamped on the elastic clamping seat. When the equipment is to be installed, it is only necessary to open the box door and then pull the two vertical plates so that the telescopic top plate is in a fully extended state, and the foldable side plates will be straightened into a plate shape. At this time, it is only necessary to clamp the clamping rod to the elastic clamping seat, and the foldable side plates will not be bent by the support of the support rod, thereby ensuring the stability of the entire box structure. And in this state, the first transmission gear on the support rod will mesh with the first rack. At this time, it is only necessary to control the telescopic member to extend, and the telescopic member drives the adjusting rod to move synchronously. The adjusting rod can drive the connecting shaft to move along the axial direction of the driving shaft through the connecting ring, so that the connecting shaft is inserted into the plug slot. Then start the driving motor, the driving motor can drive the driving shaft to rotate, the driving shaft can drive the connecting shaft to rotate synchronously, so as to drive the support rod to rotate through the connecting shaft, through the cooperation of the first transmission gear and the first rack, the support rod can drive the sliding rod to move along the vertical direction on the guide seat, through the cooperation of the second rack and the second transmission gear, the sliding rod can drive the rotating shafts on the same side plate body to rotate synchronously, the rotating shaft can drive the sealing plate to rotate, so as to adjust the inclination of each sealing plate, so that the inside of the chassis can be connected with the outside through the heat dissipation port, which can be used for heat dissipation, and by adjusting the inclination of the sealing plate, the speed of air circulation can be adjusted, so as to adjust the efficiency of heat exchange. It can be flexibly adjusted according to different working conditions and external environmental conditions. When the chassis is to be shrunk later, it is only necessary to control the connecting shaft to withdraw from the plug-in slot through the adjustment unit, and then remove the clamping rod from the elastic clamping seat, and then squeeze the two vertical plates towards each other. The device can effectively reduce the space occupied during transportation through the telescopic structure, thereby reducing the transportation cost. In addition, it is easy to assemble and disassemble, simple to operate, and can adjust heat dissipation according to usage requirements, thereby reducing dust accumulation inside the device and reducing the frequency of subsequent cleaning of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a dustproof communication chassis provided by an embodiment of the present invention;

[0017] Figure 2 A schematic structural diagram of a dustproof communication chassis in a collapsed state provided by an embodiment of the present invention;

[0018] Figure 3 A schematic diagram of the structure of a dustproof communication chassis provided by an embodiment of the present invention after removing the retractable top plate on the top;

[0019] Figure 4A schematic diagram of installing a sealing plate in a dustproof communication chassis provided by an embodiment of the present invention;

[0020] Figure 5 A schematic diagram of the structure of a foldable side panel in a dustproof communication chassis provided by an embodiment of the present invention in an unfolded state;

[0021] Figure 6 for Figure 5 A in the enlarged view;

[0022] Figure 7 for Figure 5 The enlarged view of point B in the figure;

[0023] Figure 8 for Figure 5 The enlarged view of point C in the figure;

[0024] Fig. 9 A schematic diagram of the internal structure of a drive box in a dustproof communication chassis provided by an embodiment of the present invention;

[0025] Fig.10 for Fig. 9 Enlarged view of point D in .

[0026] In the accompanying drawings: chassis body 1; upright plate 11; door 111; foldable side panel 12; side panel body 121; flexible connecting section 122; heat dissipation vent 123; telescopic top plate 13; drive box 14; support module 2; mounting rod 21; rotating seat 22; support rod 23; plug-in slot 231; snap-fit ​​rod 24; elastic snap-fit ​​seat 25; sealing module 3; sealing plate 31; rotating shaft 32; control unit 4; sliding rod 41; first rack 411; second rack 412; guide seat 42; first transmission gear 43; second transmission gear 44; connecting plate 45; reset spring 46; drive unit 5; drive motor 51; drive shaft 52; connecting shaft 53; adjustment unit 6; telescopic member 61; adjustment rod 62; connecting ring 63. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0029] like Figure 1-Figure 7 As shown, a dustproof communication chassis provided by an embodiment of the present invention includes:

[0030] A chassis body 1, the chassis body 1 comprises a vertical panel 11, a foldable side panel 12 and a telescopic top panel 13, two of each of the vertical panels 11, the foldable side panels 12 and the telescopic top panel 13 are provided, the left and right sides of the two vertical panels 11 are connected to each other through the foldable side panels 12, the upper and lower ends of the two vertical panels 11 are connected to each other through the telescopic top panel 13, and one of the vertical panels 11 is provided with a cabinet door 111, the foldable side panel 12 comprises a plurality of side panel bodies 121, two adjacent side panel bodies 121 are connected through a flexible connecting section 122, and the two side panel bodies 121 at the two ends are respectively connected to the corresponding vertical panels 11 through the flexible connecting section 122, and each of the side panel bodies 121 is provided with a heat dissipation port 123;

[0031] The sealing module 3 includes a plurality of rotating shafts 32 equidistantly mounted on the side plate body 121, and the side plate body 121 is also provided with a control unit 4 for driving the rotating shafts 32 to rotate synchronously, and each rotating shaft 32 is provided with a sealing plate 31, and when each sealing plate 31 is in a vertical state, two adjacent sealing plates 31 abut against each other, and the combination of each sealing plate 31 completely covers the heat dissipation port 123;

[0032] A support module 2, wherein the support module 2 is arranged between two vertical plates 11, and two groups of support modules 2 are symmetrically arranged between the two vertical plates 11, wherein the support module 2 includes a mounting rod 21 installed on one vertical plate 11, and an elastic snap-fit ​​seat 25 installed on the other vertical plate 11, wherein two rotating seats 22 are symmetrically installed on the mounting rod 21, and a support rod 23 is rotatably installed on each of the two rotating seats 22, and one end of the two support rods 23 away from the rotating seat 22 is installed on the snap-fit ​​rod 24, and the support rod 23 and the snap-fit ​​rod 24 are rotationally matched, and the support rod 23 is also connected to the control unit 4, and can drive the control unit 4 to work by rotation.

[0033] In an embodiment of the present invention, each of the rotating shafts 32 is placed in the horizontal direction and is equidistantly distributed in the vertical direction. The communication chassis is composed of front and rear side panels through two vertical panels 11, left and right side panels through two foldable side panels 12, and top and bottom panels through two telescopic top panels 13, thereby forming a complete box structure. When transporting, the device as a whole is in a retracted state. Specifically, the two telescopic top panels 13 are in a retracted state, and the flexible connecting section 122 will deform, so that the foldable side panels 12 on both sides are folded into a number of V-shaped structures that shrink between the two vertical panels 11, and at this time the locking rod 24 is not locked on the elastic locking seat 25. When the equipment is to be installed, it is only necessary to open the box door 111, and then pull the two vertical panels 11 so that the telescopic top panel 13 is in a fully extended state, and the foldable side panels 12 will straighten into a plate shape. At this time, it is only necessary to snap the engaging rod 24 onto the elastic engaging seat 25, and the foldable side panel 12 will not be bent by the support of the support rod 23, thereby ensuring the stability of the entire box structure. In this state, the support rod 23 will be connected to the control unit 4, and the control unit 4 can be driven to work by rotating the support rod 23. The control unit 4 adjusts the inclination of the sealing plate 31 by driving the rotating shaft 32 to rotate, so that the inside of the chassis can be connected to the outside world through the heat dissipation port 123, which can be used for heat dissipation, and the speed of air circulation can be adjusted by adjusting the inclination of the sealing plate 31. When the chassis is to be shrunk again in the later stage, it is only necessary to remove the engaging rod 24 from the elastic engaging seat 25, and then squeeze the two vertical plates 11 towards each other.

[0034] like Figure 3 , Figure 5 , Figure 6 and Figure 7 As shown, as a preferred embodiment of the present invention, the control unit 4 includes a guide seat 42 installed on the inner side of the side panel body 121, and a sliding rod 41 is slidably installed on the guide seat 42 along the vertical direction, and second racks 412 are equidistantly distributed on the sliding rod 41, and each rotating shaft 32 on the same side panel body 121 is installed with a second transmission gear 44 meshing with the second rack 412, a first rack 411 is also arranged at one end of the sliding rod 41, and a first transmission gear 43 cooperating with the first rack 411 is also arranged on a support rod 23 in the support module 2.

[0035] In the embodiment of the present invention, when the chassis is in the extended state, the first transmission gear 43 on the support rod 23 will mesh with the first rack 411. At this time, it is only necessary to rotate the support rod 23. Through the cooperation of the first transmission gear 43 and the first rack 411, the support rod 23 can drive the sliding rod 41 to move along the vertical direction on the guide seat 42. Through the cooperation of the second rack 412 and the second transmission gear 44, the sliding rod 41 can drive the rotating shafts 32 on the same side plate body 121 to rotate synchronously. The rotating shaft 32 can drive the sealing plate 31 to rotate, thereby adjusting the inclination of each sealing plate 31, so that the inside of the chassis can be connected to the outside through the heat dissipation port 123, which can be used for heat dissipation, and by adjusting the inclination of the sealing plate 31, the speed of air circulation can be adjusted, thereby adjusting the efficiency of heat exchange. It can be flexibly adjusted according to different working conditions and external environmental conditions.

[0036] Specifically, when there is a lot of dust in the external environment, the heat dissipation port 123 can be blocked, or each sealing plate 31 can be adjusted to a tilted downward state to prevent or minimize dust from entering the box. When there is less dust in the external environment, the sealing plate 31 can be adjusted to a horizontal state, so that the inside of the box can fully exchange heat with the outside world, thereby improving the heat dissipation effect.

[0037] like Figure 1 , Figure 2 , Fig. 9 and Fig.10 As shown, as a preferred embodiment of the present invention, a driving box 14 is provided on the vertical plate 11 without a box door 111, and a driving unit 5 is provided in the driving box 14. When the locking rod 24 is locked on the elastic locking seat 25, the driving unit 5 will be connected to the support rod 23 equipped with the first transmission gear 43, and drive the support rod 23 to rotate.

[0038] In the embodiment of the present invention, the driving unit 5 is provided with two groups, which are respectively used to drive the corresponding support rods 23 in the support modules 2 on both sides to rotate. The driving unit 5 includes a driving motor 51 installed in a driving box 14, the output end of the driving motor 51 is connected to a driving shaft 52, and the driving shaft 52 is connected to a connecting shaft 53 through a sliding key, and the end of the supporting rod 23 installed with the first transmission gear 43 away from the rotating seat 22 is provided with a plug-in slot 231 matching the connecting shaft 53, and the driving box 14 is also provided with an adjustment unit 6 for driving the connecting shaft 53 to perform linear movement along the axial direction of the driving shaft 52.

[0039] When the support rod 23 is clamped onto the elastic clamping seat 25, the axis of the support rod 23 coincides with the axis of the connecting shaft 53. At this time, the adjusting unit 6 pushes the connecting shaft 53 to move toward the side close to the support rod 23, and the connecting shaft 53 is inserted into the insertion slot 231. Then the driving motor 51 is started, and the driving motor 51 can drive the driving shaft 52 to rotate, and the driving shaft 52 can drive the connecting shaft 53 to rotate synchronously, so that the connecting shaft 53 drives the support rod 23 to rotate, and the control unit 4 can be driven to work through the support rod 23.

[0040] In addition, two groups of driving units 5 are used to drive the corresponding support rods 23 in the two groups of support modules 2 to rotate, so that the sealing modules 3 on the two foldable side panels 12 can be adjusted independently. According to the usage requirements, the sealing modules 3 on both sides can be opened, or only the sealing modules 3 on one side can be opened, etc., thereby further improving the flexibility of the device.

[0041] like Fig. 9 and Fig.10 As shown, as a preferred embodiment of the present invention, the adjustment unit 6 includes a telescopic member 61 installed in the chassis body 1, the telescopic end of the telescopic member 61 is connected to an adjustment rod 62, the adjustment rod 62 is connected to a connecting ring 63, and the connecting shaft 53 is rotatably installed in the connecting ring 63.

[0042] In the embodiment of the present invention, the telescopic member 61 is an electric telescopic rod. When in use, the telescopic member 61 only needs to be controlled to extend and retract, and the telescopic member 61 drives the adjustment rod 62 to move synchronously. The adjustment rod 62 can drive the connecting shaft 53 to move along the axial direction of the driving shaft 52 through the connecting ring 63, so that the connecting shaft 53 can be inserted into the plug slot 231 or pulled out from the plug slot 231.

[0043] like Figure 5 and Figure 8 As shown, as a preferred embodiment of the present invention, one end of the sliding rod 41 is also connected to a connecting plate 45, the connecting plate 45 is slidably installed on the side plate body 121, and a return spring 46 is also arranged between the connecting plate 45 and the side plate body 121.

[0044] In an embodiment of the present invention, when the sliding rod 41 is not driven by the support rod 23, under the action of the elastic restoring force of the reset spring 46, the connecting plate 45 will push the reset spring 46 to return to its initial position. In this state, each sealing plate 31 is in a vertical state, thereby ensuring that each sealing plate 31 will not swing at will when in the folded state.

[0045] Working principle: When transporting, the device as a whole is in a retracted state. Specifically, the two telescopic top plates 13 are in a retracted state, and the foldable side plates 12 on both sides are folded into a number of V-shaped structures and retracted between the two vertical plates 11, and at this time, the locking rod 24 is not connected to the elastic locking seat 25. When the equipment is to be installed, it is only necessary to open the box door 111, and then pull the two vertical plates 11 so that the telescopic top plate 13 is in a fully extended state, and the foldable side plates 12 will straighten into a plate shape. At this time, it is only necessary to lock the locking rod 24 to the elastic locking seat 25, and the foldable side plates 12 will not bend through the support of the support rod 23, thereby ensuring the stability of the entire box structure. And in this state, the first transmission gear 43 on the support rod 23 will mesh with the first rack 411. At this time, it is only necessary to control the telescopic member 61 to extend, and the telescopic member 61 drives the adjusting rod 62 to move synchronously. The adjusting rod 62 can drive the connecting shaft 53 to move along the axial direction of the driving shaft 52 through the connecting ring 63, so as to insert the connecting shaft 53 into the plug-in slot 231. Then, the driving motor 51 is started, and the driving motor 51 can drive the driving shaft 52 to rotate, and the driving shaft 52 can drive the connecting shaft 53 to rotate synchronously, thereby driving the support rod 23 to rotate through the connecting shaft 53, and through the cooperation of the first transmission gear 43 and the first rack 411, the support rod 23 can drive the sliding rod 41 to move along the vertical direction on the guide seat 42, and through the cooperation of the second rack 412 and the second transmission gear 44, the sliding rod 41 can drive each rotating shaft 32 on the same side plate body 121 to rotate synchronously, and the rotating shaft 32 can drive the sealing plate 31 to rotate, thereby adjusting the inclination of each sealing plate 31, so that the inside of the chassis can be connected with the outside through the heat dissipation port 123, which can be used for heat dissipation, and by adjusting the inclination of the sealing plate 31, the speed of air circulation can be adjusted, thereby adjusting the efficiency of heat exchange. It can be flexibly adjusted according to different working conditions and external environmental conditions. When the chassis needs to be retracted later, it is only necessary to control the connecting shaft 53 to withdraw from the insertion slot 231 through the adjustment unit 6, then remove the locking rod 24 from the elastic locking seat 25, and then squeeze the two vertical plates 11 toward each other.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A dustproof communication chassis, characterized in that: include: A chassis body, the chassis body comprising a vertical panel, a foldable side panel and a telescopic top panel, two vertical panels, two foldable side panels and two telescopic top panels are provided respectively, the left and right sides of the two vertical panels are connected to each other through the foldable side panels, the upper and lower ends of the two vertical panels are connected to each other through the telescopic top panel, and a box door is provided on one of the vertical panels, the foldable side panel comprises a plurality of side panel bodies, two adjacent side panel bodies are connected through a flexible connecting section, and the two side panel bodies at the two ends are respectively connected to the corresponding vertical panels through the flexible connecting sections, and each of the side panel bodies is provided with a heat dissipation port; A sealing module, wherein the sealing module comprises a plurality of rotating shafts equidistantly mounted on the side plate body, and the side plate body is also provided with a control unit for driving the rotating shafts to rotate synchronously, each of the rotating shafts is provided with a sealing plate, and when each of the sealing plates is in a vertical state, two adjacent sealing plates abut against each other, and the assembly formed by each of the sealing plates completely covers the heat dissipation port; A support module, wherein the support module is arranged between two vertical plates, and two groups of support modules are symmetrically arranged between the two vertical plates, the support module comprises a mounting rod installed on one vertical plate, and an elastic locking seat installed on the other vertical plate, two rotating seats are symmetrically installed on the mounting rod, and a support rod is rotatably installed on each of the two rotating seats, and one end of the two support rods away from the rotating seat is installed on the locking rod, and the support rod and the locking rod are rotationally matched, and the support rod is also connected to the control unit, and can drive the control unit to work by rotation.

2. The dustproof communication chassis according to claim 1, characterized in that: The control unit includes a guide seat installed on the inner side of the side panel body, a sliding rod is slidably installed on the guide seat along the vertical direction, second racks are equidistantly distributed on the sliding rod, and a second transmission gear meshing with the second rack is installed on each rotating shaft on the same side panel body, a first rack is also arranged at one end of the sliding rod, and a first transmission gear cooperating with the first rack is also arranged on a support rod in the support module.

3. The dustproof communication chassis according to claim 2, characterized in that: A driving box is provided on the vertical plate without a box door, and a driving unit is provided in the driving box. When the engaging rod is engaged with the elastic engaging seat, the driving unit is connected to the supporting rod equipped with the first transmission gear and drives the supporting rod to rotate.

4. The dustproof communication chassis according to claim 3, characterized in that: The driving units are provided in two groups, which are respectively used to drive the corresponding supporting rods in the supporting modules on both sides to rotate.

5. The dustproof communication chassis according to claim 4, characterized in that: The driving unit includes a driving motor installed in a driving box, the output end of the driving motor is connected to a driving shaft, the driving shaft is connected to a connecting shaft via a sliding key, and the end of the support rod on which the first transmission gear is installed, away from the rotating seat, is provided with a plug-in slot matching the connecting shaft, and the driving box is also provided with an adjustment unit for driving the connecting shaft to move linearly along the axial direction of the driving shaft.

6. The dustproof communication chassis according to claim 5, characterized in that: The adjustment unit comprises a telescopic member installed in the chassis body, the telescopic end of the telescopic member is connected with an adjustment rod, the adjustment rod is connected with a connecting ring, and the connecting shaft is rotatably installed in the connecting ring.

7. The dustproof communication chassis according to claim 2, characterized in that: One end of the sliding rod is also connected to a connecting plate, the connecting plate is slidably mounted on the side plate body, and a return spring is also arranged between the connecting plate and the side plate body.

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