Dust-proof structure for automobile seat slide rail and use method thereof

Abstract

The present invention relates to a dustproof structure for a car seat slide and a method of using the same, comprising: a shell installed at the end of a lower slide rail, the interior of the shell is hollow to form an accommodation space, and a through hole is opened at a position of the shell near the notch; a rotating shaft rotatably installed on the shell and partially located in the accommodation space; a shielding belt coiled on the rotating shaft and located in the accommodation space, the end of the shielding belt extends outward from the through hole and is fixedly connected to the upper slide rail, and moves along the lower slide rail through the upper slide rail to pull out the shielding belt, so that the shielding belt shields the notch; and a resilient body that is drive-connected to the rotating shaft and can be elastically deformed to apply a restoring torque to the rotating shaft, thereby driving the rotating shaft to rotate and reeling the shielding belt. The present invention effectively solves the problem that the notch of the lower slide rail is exposed and poses a safety hazard. By installing a dustproof structure on the lower slide rail to shield the notch of the lower slide rail, foreign objects are prevented from falling in, safety hazards are eliminated, and the adjustment performance of the seat slide rail is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical structures, in particular to a dustproof structure for a car seat slide rail and a use method thereof. Background Art

[0002] As car owners' requirements for car seat comfort continue to increase, seats with extra-long travel (over 500 mm) are installed in large quantities in the middle and rear rows of commercial vehicles and new energy vehicles. The lower rail of such seat products is generally 1 to 1.5 meters long and is usually installed under the decorative wooden floor or carpet of the vehicle.

[0003] Since the upper slide rail fixed to the bottom of the seat is relatively short (generally around 350-500 mm), after the upper slide rail is slid below the lower slide rail, part of the groove of the lower slide rail is exposed to the floor surface of the vehicle body. Dust and other debris can easily fall into the lower slide rail through the groove, and even the heels of female passengers can easily fall into the groove, posing certain safety hazards. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a dustproof structure for a car seat slide rail and a method of using the same, which solves the problem that the groove of the lower slide rail is exposed and poses a safety hazard. By installing a dustproof structure on the lower slide rail to cover the groove of the lower slide rail, foreign objects are prevented from falling in, safety hazards are eliminated, and the adjustment performance of the seat slide rail is ensured.

[0005] The technical solution to achieve the above purpose is:

[0006] The present invention provides a dustproof structure for a car seat slide rail, the car seat slide rail comprises a lower slide rail fixed to a vehicle body and an upper slide rail slidably arranged on the lower slide rail, a notch is formed on the top of the lower slide rail, and the dustproof structure comprises:

[0007] A shell installed at the end of the lower sliding rail, wherein the interior of the shell is hollow to form an accommodation space, and a through hole is opened at a position of the shell near the notch;

[0008] A rotating shaft rotatably mounted on the housing and partially located in the accommodating space;

[0009] A shielding belt wound around the rotating shaft and located in the accommodating space, the end of the shielding belt protruding outward from the through hole and fixedly connected to the upper slide rail, and the shielding belt moves along the lower slide rail through the upper slide rail to pull out the shielding belt, so that the shielding belt shields the notch; and

[0010] The elastic body is connected to the rotating shaft and can be elastically deformed to apply a restoring torque to the rotating shaft, thereby driving the rotating shaft to rotate and reeling the shielding belt.

[0011] The present invention adopts a dustproof structure for the automobile seat slide rail, and the upper slide rail slides along the lower slide rail to pull the shielding belt outward from the through hole, so that the shielding belt shields the notch; when the upper slide rail slides toward the direction close to the shell, the restoring torque generated by the elastic deformation of the rebound body provides the rotating shaft with a power for reverse rotation, so that the shielding belt can be reeled in, solving the problem of the exposed notch of the lower slide rail posing a safety hazard. By installing the dustproof structure on the lower slide rail, the notch of the lower slide rail is shielded to prevent foreign objects from falling in, eliminate safety hazards, and ensure the adjustment performance of the seat slide rail.

[0012] A further improvement of the dustproof structure of the automobile seat slide rail of the present invention is that one end of the resilient body is fixedly connected to the rotating shaft, and the other end is fixedly connected to the inner wall of the shell. When the rotating shaft rotates and releases the shielding tape, the resilient body elastically deforms and exerts a restoring torque on the rotating shaft, so that the rotating shaft can rotate in the opposite direction, thereby rewinding the shielding tape.

[0013] A further improvement of the dustproof structure for the automobile seat slide rail of the present invention is that two resilient bodies are arranged opposite to each other and are respectively located on both sides of the shielding strip.

[0014] The dustproof structure for the automobile seat slide rail of the present invention is further improved in that it also includes a driven gear fixedly sleeved on the rotating shaft, a driven shaft parallel to the rotating shaft and rotatably mounted on the housing, and a driving gear fixedly sleeved on the driven shaft and meshing with the driven gear;

[0015] One end of the resilient body is fixedly connected to the driven shaft, and the other end is fixedly connected to the inner wall of the shell. When the rotating shaft rotates and releases the shielding belt, the driven gear drives the driving gear to rotate and drives the driven shaft to rotate, so that the resilient body is elastically deformed to provide a restoring torque to the driven shaft, so that the driving gear can drive the driven gear to rotate in the opposite direction and reel in the shielding belt.

[0016] A further improvement of the dustproof structure for the automobile seat slide rail of the present invention is that the diameter of the driven gear is smaller than the diameter of the driving gear.

[0017] A further improvement of the dustproof structure for the automobile seat slide rail of the present invention is that a connection hole is provided on the top surface of the upper slide rail;

[0018] The dust-proof structure also includes a connecting plate fixedly connected to the end of the shielding strip extending outward from the through hole and a screw hole corresponding to the connecting hole and opened on the connecting plate. The connecting plate is attached to the top surface of the upper slide rail, and then bolts are passed through the connecting holes and screwed into the screw holes, so that the connecting plate is fixedly connected to the upper slide rail.

[0019] A further improvement of the dustproof structure of the automobile seat slide rail of the present invention is that the inner wall of the shell protrudes toward the direction close to the shielding strip near the through hole to form two opposite protrusions, and the two protrusions respectively press against the top and bottom surfaces of the shielding strip to prevent dust or foreign matter from entering the shell along with the shielding strip.

[0020] A further improvement of the dustproof structure for the automobile seat slide rail of the present invention is that it also includes a guide wheel rotatably mounted on the lower slide rail near the through hole, and the pulled out shielding belt is attached to the top of the guide wheel.

[0021] A further improvement of the dustproof structure for the automobile seat slide rail of the present invention is that it also includes two rubber strips relatively fixed to the top of the lower slide rail and arranged horizontally, the rubber strips extend in a direction close to each other, and there is a set gap between the two rubber strips;

[0022] The width of the shielding belt is greater than the set gap, and the pulled-out shielding belt is attached to the bottom surface of the rubber strip, so that the shielding belt and the two rubber strips shield the notch.

[0023] The present invention also provides a method for using the dustproof structure for a car seat slide rail, comprising the following steps:

[0024] Provide a dustproof structure, install the housing on the end of the lower slide rail, and fix the end of the shielding belt on the upper slide rail;

[0025] When the upper slide rail moves along the lower slide rail in a direction away from the housing, the upper slide rail pulls the shielding belt out of the housing, so that the shielding belt shields the notch;

[0026] When the upper slide rail moves along the lower slide rail toward the shell, the resilient body provides a restoring torque to the rotating shaft to drive the rotating shaft to rotate, thereby reeling the shielding belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The present invention is a three-dimensional diagram of the dustproof structure of the automobile seat slide rail in use.

[0028] Figure 2 The present invention is a side sectional view of the dustproof structure for the automobile seat slide rail in use.

[0029] Figure 3 The present invention is a three-dimensional diagram of an embodiment of the dustproof structure for a car seat slide rail.

[0030] Figure 4 The present invention is a front cross-sectional view of an embodiment of the dustproof structure for a car seat slide rail according to the present invention.

[0031] Figure 5 The figure is an exploded schematic diagram of an embodiment of the dustproof structure for a car seat slide rail of the present invention.

[0032] Figure 6 The present invention is a three-dimensional diagram of another embodiment of the dustproof structure for a car seat slide rail.

[0033] Figure 7 The figure is an exploded schematic diagram of another embodiment of the dustproof structure for a car seat slide rail according to the present invention.

[0034] Figure 8 It is a stereoscopic view of another embodiment of the dustproof structure for automobile seat slide rails of the present invention.

[0035] Fig. 9 The present invention is a front cross-sectional view of another embodiment of the dustproof structure for a car seat slide rail according to the present invention.

[0036] Fig.10 The figure is an exploded schematic diagram of another embodiment of the dustproof structure for a car seat slide rail according to the present invention. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0038] The present invention adopts a dustproof structure for a car seat slide rail, wherein the upper slide rail slides along the lower slide rail to pull the shielding belt outward from the through hole, so that the shielding belt shields the notch. When the upper slide rail slides toward the direction close to the shell, the restoring torque generated by the elastic deformation of the resilient body provides a reverse rotational force to the rotating shaft, so that the shielding belt can be rolled up, solving the problem of the exposed notch of the lower slide rail posing a safety hazard. By installing a dustproof structure on the lower slide rail to shield the notch of the lower slide rail, foreign objects are prevented from falling in, safety hazards are eliminated, and the adjustment performance of the seat slide rail is ensured. The dustproof structure for a car seat slide rail of the present invention is described below in conjunction with the accompanying drawings.

[0039] See also Figure 1 , Figure 1 This is a three-dimensional diagram of the use state of the dustproof structure of the present invention for the automobile seat slide rail. Figure 1 , the dustproof structure of the present invention for the automobile seat slide rail is described.

[0040] like Figure 1 and Figure 3 As shown, the dustproof structure of the automobile seat slide rail of the present invention comprises a lower slide rail 22 fixed to the vehicle body and an upper slide rail 21 slidably arranged on the lower slide rail 22 and fixedly connected to the bottom of the seat, and a notch 221 is formed on the top of the lower slide rail 22. The dustproof structure comprises:

[0041] The housing 11 is mounted on the end of the lower rail 22, the interior of the housing 11 is hollow to form an accommodation space, and a through hole is opened near the notch 221 of the housing;

[0042] A rotating shaft 12 rotatably mounted on the housing 11 and partially located in the accommodating space;

[0043] A shielding belt 122 wound around the rotating shaft 12 and located in the accommodating space, the end of the shielding belt 122 protrudes outward from the through hole and is fixedly connected to the upper slide rail 21, and the shielding belt 122 is pulled outward by the upper slide rail 21 moving along the lower slide rail 22, so that the shielding belt 122 shields the notch 221; and

[0044] The elastic body 14 is drivingly connected to the rotating shaft 12 and can be elastically deformed to apply a restoring torque to the rotating shaft 12 , thereby driving the rotating shaft 12 to rotate and reeling the shielding belt 122 .

[0045] Preferably, the resilient body 14 is a spiral spring.

[0046] Preferably, the shielding strip 122 is made of a webbing or metal material.

[0047] Further, combined with Figure 4 As shown, the inner wall of the shell 11 protrudes toward the direction close to the shielding strip 122 near the through hole to form two opposite protrusions 111, and the two protrusions 111 respectively press against the top and bottom surfaces of the shielding strip 122 to prevent dust or foreign matter from entering the shell 11 along with the shielding strip.

[0048] Furthermore, a connection hole is provided on the top surface of the upper slide rail 21;

[0049] The dustproof structure also includes a connecting plate 1221 fixedly connected to the end of the shielding strip 122 extending outward from the through hole and a screw hole corresponding to the connecting hole and opened on the connecting plate 1221. The connecting plate 1221 is attached to the top surface of the upper slide rail 21, and then bolts are passed through the corresponding connecting holes and screwed into the screw holes, so that the connecting plate 1221 is fixedly connected to the upper slide rail 21.

[0050] Further, combined with Figure 4 As shown, it also includes a guide wheel 16 rotatably mounted on the lower lower rail 22 near the through hole, and the pulled out shielding belt 122 is attached to the top of the guide wheel 16.

[0051] Further, combined with Figure 2 As shown, it also includes two rubber strips 15 relatively fixed to the top of the lower slide rail 22 and arranged horizontally, the rubber strips 15 extend in a direction close to each other, and there is a set gap between the two rubber strips 15, so that the upper slide rail 21 is fixedly connected to the car seat;

[0052] The width of the shielding strip 122 is greater than the set gap, and the pulled-out shielding strip 122 is attached to the bottom surfaces of the two rubber strips 15 , so that the shielding strip 122 and the two rubber strips 15 shield the notch 221 .

[0053] As a preferred embodiment of the present invention, Figure 3 , Figure 4 and Figure 5 As shown, one end of the resilient body 14 is fixedly connected to the rotating shaft 12, and the other end is fixedly connected to the inner wall of the shell 11. When the rotating shaft 12 rotates and releases the shielding belt 122, the resilient body 14 elastically deforms and applies a restoring torque to the rotating shaft 12, so that the rotating shaft 12 can rotate in the opposite direction, thereby rewinding the shielding belt 122.

[0054] Further, combined with Figure 6 and Figure 7 As shown, two resilient bodies 14 are arranged opposite to each other and are respectively located on both sides of the shielding belt 122 . This structure can ensure the stability of the extension and retraction of the shielding belt 122 .

[0055] Further, combined with Figure 8 , Fig. 9 and Fig.10 As shown, it also includes a driven gear 121 fixedly sleeved on the rotating shaft 12, a driven shaft 13 parallel to the rotating shaft 12 and rotatably mounted on the housing 11, and a driving gear 131 fixedly sleeved on the driven shaft 13 and meshing with the driven gear 121;

[0056] One end of the resilient body 14 is fixedly connected to the driven shaft 13, and the other end is fixedly connected to the inner wall of the shell 11. When the rotating shaft 12 rotates and releases the shielding belt 122, the driven gear 121 drives the driving gear 131 to rotate and drives the driven shaft 13 to rotate, so that the resilient body 14 is elastically deformed to provide a restoring torque to the driven shaft 13, so that the driving gear 131 can drive the driven gear 121 to rotate in the opposite direction and reel in the shielding belt 122.

[0057] Specifically, the diameter of the driven gear 121 is smaller than the diameter of the driving gear 131 , which can reduce the number of rotations of the spiral spring. This structure is suitable for the lower sliding rail 22 with a large stroke.

[0058] Preferably, a cavity partition plate is provided between the driven gear 121, the driving gear 131 and the spiral spring to separate the driven gear 121 from the driving gear 131 and the spiral spring, thereby preventing the spiral spring from interfering with the driven gear 121 or the driving gear 131 during the expansion and contraction process.

[0059] The specific implementation methods of the present invention are as follows:

[0060] The housing 11 is installed at the end of the lower slide rail 22, and the connecting plate 1221 of the shielding belt 122 is fixedly connected to the upper slide rail 21 by bolts, so that the two ends of the upper slide rail 21 are respectively fixed to a connecting plate 1221, that is, the two ends of the upper slide rail 21 are provided with the housing 11. Since the working principles of the shielding belts 122 at the two ends are opposite, only the working principle of the shielding belt 122 at one end is described;

[0061] If the length of the lower rail 22 is small, it can be used as Figure 5 When the upper slide rail 21 moves along the lower slide rail 22 in a direction away from the shell 11, the shielding belt 122 is pulled outward and fits to the bottom of the two rubber strips 15, so that the rubber strips 15 and the shielding belt 122 jointly shield the notch 221, and at this time the resilient body 14 elastically deforms, and when the upper slide rail 21 moves along the lower slide rail 22 in a direction close to the shell 11, the resilient body 14 provides a restoring torque to the rotating shaft 12, so that the rotating shaft 12 rotates in the opposite direction, and the shielding belt 122 is rolled up, so that the shielding belt 122 is partially retracted into the shell 11;

[0062] If you want the shielding belt 122 to be released and reeled in more smoothly, you can use the following method: Figure 6 and Figure 7 The structure is that the elastic body 14 is arranged on both sides of the shielding belt 122, so that both ends of the rotating shaft 12 have a restoring torque, so that the rotating shaft 12 rotates in the reverse direction more smoothly;

[0063] If the length of the lower rail 22 is large, it can be used as Figures 8 to 10 The structure of the driven gear 121 is meshed with the driving gear 131. When the upper slide rail 21 moves along the lower slide rail 22 in the direction away from the shell 11, the shielding belt 122 is pulled out and fits the bottom of the two rubber strips 15, so that the rubber strip 15 and the shielding belt 122 jointly block the notch 221, and at this time, the rotating shaft 12 drives the driven gear 121 to rotate, the driven gear 121 drives the driving gear 131 to rotate, and the driving gear 131 drives the driven shaft 13 to rotate, so that the resilient body 14 elastically deforms, and when the upper slide rail 21 moves along the lower slide rail 22 in the direction close to the shell 11, the resilient body 14 provides a restoring torque to the driven shaft 13, so that the driven shaft 13 rotates in the opposite direction, and drives the driving gear 131 to rotate in the opposite direction, thereby driving the driven gear 121 and the rotating shaft 12 to rotate in the opposite direction, thereby winding up the shielding belt 122, so that the shielding belt 122 is partially retracted into the shell 11.

[0064] The present invention also provides a method for using the dustproof structure for a car seat slide rail, comprising the following steps:

[0065] Provide a dustproof structure, install the housing 11 on the end of the lower slide rail 21, and fix the end of the shielding belt 122 on the upper slide rail 21;

[0066] When the upper slide rail 21 moves along the lower slide rail 22 in a direction away from the housing 11, the upper slide rail 21 pulls the shielding strip 122 out of the housing 11, so that the shielding strip 122 shields the notch 221;

[0067] When the upper slide rail 21 moves along the lower slide rail 22 toward the housing 11 , the elastic body 14 provides a restoring torque to the rotating shaft 12 to drive the rotating shaft 12 to rotate, thereby retracting the shielding belt 122 .

[0068] The specific operation mode of the actual implementation of the method provided by the present invention is as follows:

[0069] The housing 11 is installed at the end of the lower slide rail 22, and the connecting plate 1221 of the shielding belt 122 is fixedly connected to the upper slide rail 21 by bolts, so that the two ends of the upper slide rail 21 are respectively fixed to a connecting plate 1221, that is, the two ends of the upper slide rail 21 are provided with the housing 11. Since the working principles of the shielding belts 122 at the two ends are opposite, only the working principle of the shielding belt 122 at one end is described;

[0070] If the length of the lower rail 22 is small, it can be used as Figure 5 When the upper slide rail 21 moves along the lower slide rail 22 in a direction away from the shell 11, the shielding belt 122 is pulled outward and fits to the bottom of the two rubber strips 15, so that the rubber strips 15 and the shielding belt 122 jointly shield the notch 221, and at this time the resilient body 14 elastically deforms, and when the upper slide rail 21 moves along the lower slide rail 22 in a direction close to the shell 11, the resilient body 14 provides a restoring torque to the rotating shaft 12, so that the rotating shaft 12 rotates in the opposite direction, and the shielding belt 122 is rolled up, so that the shielding belt 122 is partially retracted into the shell 11;

[0071] If you want the shielding belt 122 to be released and reeled in more smoothly, you can use the following method: Figure 6 and Figure 7 The structure is that the elastic body 14 is arranged on both sides of the shielding belt 122, so that both ends of the rotating shaft 12 have a restoring torque, so that the rotating shaft 12 rotates in the reverse direction more smoothly;

[0072] If the length of the lower rail 22 is large, it can be used as Figures 8 to 10The structure of, that is, the way in which the driven gear 121 meshes with the driving gear 131, can reduce the number of rotations of the volute spring. When the upper slide rail 21 moves along the lower slide rail 22 in the direction away from the shell 11, the shielding belt 122 is pulled outward and fits against the bottom of the two rubber strips 15, so that the rubber strip 15 and the shielding belt 122 jointly block the notch 221, and at this time, the rotating shaft 12 drives the driven gear 121 to rotate, the driven gear 121 drives the driving gear 131 to rotate, and the driving gear 131 drives the driven shaft 13 to rotate, so that the resilient body 14 elastically deforms. When the upper slide rail 21 moves along the lower slide rail 22 in the direction close to the shell 11, the resilient body 14 provides a restoring torque to the driven shaft 13, so that the driven shaft 13 rotates in the opposite direction, and drives the driving gear 131 to rotate in the opposite direction, thereby driving the driven gear 121 and the rotating shaft 12 to rotate in the opposite direction, thereby winding up the shielding belt 122, so that the shielding belt 122 is partially retracted into the shell 11.

[0073] The present invention is described in detail above in conjunction with the embodiments of the accompanying drawings. A person skilled in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the present invention, and the scope of protection of the present invention shall be defined by the scope of the attached claims.

Claims

1. A dustproof structure for a car seat slide rail, the car seat slide rail comprising a lower slide rail fixed to the vehicle body and an upper slide rail slidably arranged on the lower slide rail, a notch is formed on the top of the lower slide rail, characterized in that: The dustproof structure comprises: A shell installed at the end of the lower sliding rail, wherein the interior of the shell is hollow to form an accommodation space, and a through hole is opened at a position of the shell near the notch; A rotating shaft rotatably mounted on the housing and partially located in the accommodating space; a shielding belt wound around the rotating shaft and located in the accommodating space, an end of the shielding belt extending outward from the through hole and fixedly connected to the upper slide rail, and moving along the lower slide rail through the upper slide rail to pull the shielding belt outward, so that the shielding belt shields the notch; and At least one elastic body which is drivingly connected to the rotating shaft and can be elastically deformed, so as to apply a restoring torque to the rotating shaft, thereby driving the rotating shaft to rotate and reeling up the shielding belt; One end of the resilient body is fixedly connected to the rotating shaft, and the other end is fixedly connected to the inner wall of the shell. When the rotating shaft rotates and releases the shielding tape, the resilient body elastically deforms and exerts a restoring torque on the rotating shaft, so that the rotating shaft can rotate in the opposite direction, thereby retracting the shielding tape. It also includes two shielding components relatively fixed to the top of the lower sliding rail and arranged horizontally, the shielding components extend in a direction approaching each other, and a set gap is formed between the two shielding components; The width of the shielding belt is greater than the set gap, and the pulled-out shielding belt is attached to the bottom surface of the shielding component, so that the shielding belt and the two shielding components shield the notch.

2. The dustproof structure for a car seat slide rail according to claim 1, characterized in that: The two resilient bodies are arranged opposite to each other and are respectively located on both sides of the shielding belt.

3. The dustproof structure for a car seat slide rail according to claim 1, characterized in that: It also includes a driven gear fixedly sleeved on the rotating shaft, a driven shaft parallel to the rotating shaft and rotatably mounted on the housing, and a driving gear fixedly sleeved on the driven shaft and meshing with the driven gear; One end of the resilient body is fixedly connected to the driven shaft, and the other end is fixedly connected to the inner wall of the shell. When the rotating shaft rotates and releases the shielding belt, the driven gear drives the driving gear to rotate, and drives the driven shaft to rotate, so that the resilient body is elastically deformed to provide a restoring torque to the driven shaft, so that the driving gear can drive the driven gear to rotate in the opposite direction and reel in the shielding belt.

4. The dustproof structure for a car seat slide rail according to claim 3, characterized in that: The diameter of the driven gear is smaller than the diameter of the driving gear.

5. The dustproof structure for a car seat slide rail according to claim 1, characterized in that: A connecting hole is provided on the top surface of the upper slide rail; The dust-proof structure also includes a connecting plate fixedly connected to the end of the shielding strip extending outward from the through hole and a screw hole corresponding to the connecting hole and opened on the connecting plate. The connecting plate is attached to the top surface of the upper slide rail, and then bolts are passed through the connecting holes and screwed into the screw holes, so that the connecting plate is fixedly connected to the upper slide rail.

6. The dustproof structure for a car seat slide rail according to claim 1, characterized in that: The inner wall of the shell protrudes toward the shielding strip near the through hole to form two opposite protrusions, and the two protrusions respectively abut against the top and bottom surfaces of the shielding strip to prevent dust or foreign matter from entering the shell along with the shielding strip.

7. The dustproof structure for a car seat slide rail according to claim 1, characterized in that: It also includes a guide wheel rotatably mounted on the lower sliding rail near the through hole, and the pulled out shielding belt is attached to the top of the guide wheel.

8. A method for using the dustproof structure for a car seat slide rail according to claim 1, characterized in that: The steps include: Provide the dustproof structure, install the shell on the end of the lower slide rail, and fix the end of the shielding belt on the upper slide rail; When the upper slide rail moves along the lower slide rail in a direction away from the shell, the upper slide rail pulls the shielding strip out of the shell, so that the shielding strip shields the notch; When the upper slide rail moves along the lower slide rail toward the housing, the resilient body provides a restoring torque to the rotating shaft to drive the rotating shaft to rotate, thereby reeling up the shielding belt.

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