Seat gap shielding device with a coil spring type winding mechanism

Abstract

The utility model relates to the technical field of automobile seat accessories, specifically relates to a seat gap shielding device with a coiled spring type winding mechanism, which comprises: a shielding curtain connected to the backrest at the top, the bottom of the shielding curtain being connected to the cushion through a winding assembly; the winding assembly comprises a constant force spring connected to the shielding curtain and the cushion, the constant force spring exerts a pulling force F on the shielding curtain through bending deformation, and the pulling force F is a constant pulling force independent of the position change of the shielding curtain. The utility model exerts a constant pulling force on the shielding curtain through the constant force spring, ensures that the shielding curtain always has a tendency to move towards the cushion, and when the passenger rotates the shielding curtain relative to the backrest regardless of how, the resistance of the shielding curtain is always the constant pulling force F, thereby making the external force exerted by the passenger constant and improving the use experience; when the backrest rotates relative to the cushion, the shielding curtain always closely adheres to the gap under the action of the pulling force F regardless of how the gap changes, thereby ensuring the shielding effect.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat accessories technology, specifically to a seat gap covering device with a spring-loaded winding mechanism. Background Technology

[0002] The gap cover between the car seat back and seat cushion (commonly known as the "shame cover") is a key functional component of the seat system. It is mainly used to solve the problem of gap exposure when the seat is adjusted or folded. It can cover the mechanical structure (such as frame, wiring harness, etc.) at the connection between the backrest and the seat cushion, avoiding visual clutter caused by the gap exposure. During the backrest adjustment, the cover needs to stretch or fold accordingly to avoid falling off, floating, or wrinkling due to a fixed length.

[0003] The existing blind curtain is connected to the backrest at the top and to the seat cushion at the bottom via an elastic band, ensuring that the blind curtain always fits snugly against the connection between the backrest and the seat cushion. However, the inventors of this application discovered during the implementation of the existing embodiments that the elasticity of the elastic band is directly proportional to its stretch length. When a passenger needs to rotate the blind curtain around the backrest at a large angle, the passenger needs to exert increasing force to counteract the elasticity of the elastic band, and this gradually increasing resistance negatively impacts the passenger's user experience. Utility Model Content

[0004] To address the issue of unsatisfactory rotation experience of existing blinds, this utility model provides a seat gap covering device with a spring-loaded retraction mechanism. The specific technical solution is as follows:

[0005] A seat gap covering device with a spring-loaded retraction mechanism is provided. The covering device is located at the connection between the backrest and the seat cushion. It includes: a covering curtain connected to the backrest at the top, and the bottom of the covering curtain connected to the seat cushion via a retraction assembly; the retraction assembly includes a constant force spring connected to the covering curtain and the seat cushion. The constant force spring applies a tension force F to the covering curtain through bending deformation. The tension force F is a constant tension force that is independent of the change in the position of the covering curtain.

[0006] Preferably, the winding assembly further includes a cable connected to the movable end of the constant force spring, the cable being connected to the seat cushion; the winding center line of the constant force spring is perpendicular to the curtain, and the cable drives the movable end of the constant force spring to stretch towards the seat cushion to generate a tension F.

[0007] Preferably, the retraction assembly further includes a plastic housing connected to the blind curtain, the plastic housing being able to wrap the constant force spring and cable for relative fixation to the blind curtain.

[0008] Preferably, the winding assembly is respectively disposed at both ends of the curtain to apply a tension F to both ends of the curtain.

[0009] Preferably, the blind curtain is made of PP board.

[0010] As can be seen from the above technical solution, this utility model has the following beneficial effects:

[0011] This invention applies a constant tension to the blind curtain using a constant force spring, ensuring that the blind curtain always tends to move towards the seat cushion. Regardless of how the passenger rotates the blind curtain relative to the backrest, the resistance of the blind curtain remains a constant tension F, thus ensuring a constant external force applied by the passenger and improving the user experience. When the backrest rotates relative to the seat cushion, no matter how the gap changes, the blind curtain remains tightly pressed against the gap under the action of tension F, ensuring its blocking effect. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0013] Figure 2 Enlarged view of the structure at point A, where the value is 1.

[0014] In the picture: 1. Curtain; 2. Roll-up assembly; 21. Constant force spring; 22. Cable; 23. Plastic housing; 3. Backrest; 4. Seat cushion. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] like Figure 1 and Figure 2 As shown, this embodiment is a seat gap covering device with a spring-loaded retraction mechanism. The covering device is set at the connection position between the backrest 3 and the seat cushion 4. It includes: a covering curtain 1 connected to the backrest 3 at the top, and the bottom of the covering curtain 1 connected to the seat cushion 4 through a retraction assembly 2. The retraction assembly 2 includes a constant force spring 21 connected to the covering curtain 1 and the seat cushion 4. The constant force spring 21 applies a tension force F to the covering curtain 1 by bending deformation. The tension force F is a constant tension force that is independent of the position change of the covering curtain 1.

[0018] Specifically, there is a gap between the backrest 3 and the seat cushion 4, and the size of the gap changes as the backrest 3 rotates relative to the seat cushion 4. Secondly, Figure 1 The top of the middle blind curtain 1 is above its top, and the bottom of the middle blind curtain 1 is below its bottom.

[0019] Secondly, the top of the curtain 1 is fixedly connected to the back of the backrest 3 by needle and thread. The length direction of the curtain 1 is its own left and right direction. Its bottom is fixedly connected to the retractable assembly 2. The retractable assembly 2 and the bottom of the seat cushion 4 form a detachable connection. The projection of the curtain 1 on the backrest 3 can cover the gap, so that the curtain 1 can cover the gap between the backrest 3 and the seat cushion 4. Secondly, as is known in the art, the constant force spring 21 is made of a long strip of thin spring steel with prestress. When it is straightened or partially pulled out from the coiled state, the restoring force (tension) it generates remains almost constant over a considerable range of strokes. Secondly, the constant force spring One end of spring 21 is fixedly connected to the curtain 1, and its other movable end moves relative to the curtain 1 and forms a detachable connection with the bottom of the seat cushion 4. When the curtain 1 rotates towards the backrest 3 and its bottom moves away from the seat cushion 4, the constant force spring 21 is pulled out, which applies a constant pulling force F to the bottom of the curtain 1. This pulling force F is the calibration value of the constant force spring 21 and is a fixed value. As a result, the angle of rotation of the curtain 1 relative to the backrest 3 is independent of the value of the pulling force F. This allows the passenger to rotate the curtain 1 at any angle with only a constant force against the pulling force F, improving the passenger's user experience without affecting the curtain 1 and extending its service life.

[0020] Furthermore, the winding assembly 2 also includes a cable 22 connected to the movable end of the constant force spring 21, and the cable 22 is connected to the seat cushion 4; the winding center line of the constant force spring 21 is perpendicular to the curtain 1, and the cable 22 drives the movable end of the constant force spring 21 to stretch towards the seat cushion 4 to generate a pulling force F.

[0021] Specifically, the movable end of the constant force spring 21 is connected to the seat cushion 4 via cable 22, and the movable end of cable 22 is detachably connected to the seat cushion 4 via a fixing hook. When the curtain 1 rotates towards the backrest 3, or the backrest 3 rotates towards the seat cushion 4, causing the gap to widen, the fixing hook and the movable end of cable 22 are fixed relative to the seat cushion 4. Cable 22 and constant force spring 21 are gradually straightened, and constant force spring 21 applies a pulling force F to curtain 1 through cable 22, so that curtain 1 always tends to fit tightly against the gap, thereby ensuring the blocking effect of curtain 1.

[0022] Secondly, in the initial state of the constant force spring 21, the cable 22 does not extend out of the plastic housing 23. When the operator fixes the cable 22 to the seat cushion 4, the connection structure of the cable 22 extends out of the plastic housing 23. At this time, the constant force spring 21 provides a pulling force F to the curtain 1 through the cable 22. The cable 22 is under tension, so that the change in the distance between the bottom of the curtain 1 and the seat cushion 4 will not affect the tightness of the cable 22. As a result, the change in the rotation angle of the backrest 3 relative to the seat cushion 4 will not affect the tightness of the cable 22. Thus, the curtain 1 always fits tightly against the gap between the backrest 3 and the seat cushion 4.

[0023] Furthermore, the rewind assembly 2 also includes a plastic housing 23 connected to the blind curtain 1, which can wrap the constant force spring 21 and the cable 22 to fix them relative to the blind curtain 1.

[0024] Specifically, in this embodiment, the constant force spring 21 and the cable 22 rotate relative to the plastic shell 23 during the winding process. The plastic shell 23 is fixedly connected to the side of the curtain 1 near the seat cushion 4 by adhesive, or by sewing leather material onto the curtain 1, so that the plastic shell 23 is fixed relative to the curtain 1 and placed between the curtain 1 and the gap, so as to avoid being exposed on the outside and affecting the appearance.

[0025] Furthermore, the retraction assembly 2 is respectively disposed at both ends of the blind curtain 1 to apply a pulling force F to both ends of the blind curtain 1.

[0026] Specifically, both the left and right ends of the blind curtain 1 are fixedly connected to the retracting assembly 2, so that both the left and right ends are subjected to tension F, thereby making the blind curtain 1 subjected to uniform force during rotation and reducing its deformation.

[0027] Furthermore, PP (Polypropylene Plate) is a thermoplastic engineering plastic sheet made from isotactic polypropylene or copolymer polypropylene resin as the base material through extrusion molding, calendering molding or lamination process. Its molecular chain structure gives it a unique balance of rigidity and toughness. It is the lightest material with the lowest density among the five major general-purpose engineering plastics. The blind curtain 1 is made of PP sheet, which reduces its weight, reduces its deformation possibility, and improves its service life.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0029] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. A seat gap covering device with a spring-loaded retraction mechanism, wherein the covering device is disposed at the connection position between the backrest (3) and the seat cushion (4), characterized in that, The shielding device includes: A curtain (1) is connected at the top to the backrest (3), and the bottom of the curtain (1) is connected to the seat cushion (4) via a roll-up assembly (2); The retraction assembly (2) includes a constant force spring (21) connected to the curtain (1) and the cushion (4). The constant force spring (21) applies a tension F to the curtain (1) by bending deformation. The tension F is a constant tension that is independent of the position change of the curtain (1).

2. The shielding device according to claim 1, characterized in that: The winding assembly (2) also includes a cable (22) connected to the movable end of the constant force spring (21), and the cable (22) is connected to the seat cushion (4); The center line of the constant force spring (21) is perpendicular to the curtain (1), and the cable (22) drives the movable end of the constant force spring (21) to stretch toward the cushion (4) to generate a pulling force F.

3. The shielding device according to claim 2, characterized in that: The winding assembly (2) also includes a plastic housing (23) connected to the curtain (1), the plastic housing (23) being able to wrap the constant force spring (21) and the cable (22) to be fixed relative to the curtain (1).

4. The shielding device according to claim 1, characterized in that: The winding assembly (2) is respectively disposed at both ends of the blind curtain (1) to apply a pulling force F to both ends of the blind curtain (1).

5. The shielding device according to claim 1, characterized in that: The blind curtain (1) is made of PP board.

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