A fixing structure for a face cover and a driving crawler

Abstract

The present invention discloses a fixing structure for a seat cover and a driving crawler belt, which includes a seat cushion skeleton. A plurality of rivets are arranged on the side surface of the seat cushion skeleton. A large roller and a small roller are rotatably connected to the side surface of the rivets. A limiting strip is assembled on the lower surface of the seat cushion skeleton. A motor is fixedly connected to the surface of the seat cushion skeleton by screws; a round hole is arranged inside the seat cushion skeleton, a metal bushing is arranged inside the round hole, a plastic bushing is fixedly connected to the inner surface of the metal bushing, and a synchronous rod is arranged inside the plastic bushing. Through the above structure, the driving crawler belt is designed as a series of hooks connected end to end by iron pins, so that the driving crawler belt can slide more easily in the arc chute of the leg rest driven structure, and the strength of the driven crawler belt structure is increased. The driving crawler belt structure is novel, convenient for length adjustment, low in manufacturing cost, and when a single hook is broken, the hook can be directly replaced without scrapping the whole driving crawler belt.

Description

Technical Field

[0001] The present invention relates to the technical field of drive tracks, and particularly to a fixing structure between a face cover and a drive track. Background Art

[0002] With the development of society, people's requirements for the functions and comfort of products are increasing day by day. When sitting in the back row, users also hope to have a leg rest to support their calves to make their ride more comfortable. During the adjustment of the leg rest, after the motor is powered on and rotates to drive the transmission rod, the transmission rod will drive the metal gear to rotate. The rotation of the metal gear will drive the metal arc rack to rotate. The rotation of the arc rack drives the leg rest driven structure to slide forward or backward from under the seat cushion. The drive track will slide in the arc chute in the leg rest driven structure, thereby driving the strip to unfold or retract. Since the strip is sewn on the face cover and the foam is installed in the face cover, it drives the unfolding and retracting of the face cover and the foam, thereby propping up the passenger's calf. Existing calf rests on the market can generally only be applied to the seats in the front row or the middle row due to the space in the back row of the vehicle and cannot be applied to the back row seats.

[0003] The existing solutions have the following defects:

[0004] 1. The drive track of the existing technical solution uses two-color injection molding. Since the drive track needs to be unfolded and retracted, the strength of two-color injection molding is insufficient. After the leg rest is unfolded and retracted many times, the drive track will crack, resulting in the scrapping of the entire drive track.

[0005] 2. For the drive track of two-color injection molding, the processing requirements are high, the mold manufacturing cost is high, and the requirements for equipment are also high. Summary of the Invention

[0006] An object of the present invention is to at least solve one of the technical problems existing in the prior art, and provide a fixing structure between a face cover and a drive track, which solves the problem that the drive track will crack after the leg rest is unfolded and retracted many times, resulting in the scrapping of the entire drive track.

[0007] The present invention also provides a fixing structure for a face cover and a driving track belt as described above, including: a seat cushion skeleton, on the side surface of which a plurality of rivets are provided, and on the side surface of each rivet, a large roller and a small roller are rotatably connected; a limiting strip is assembled on the lower surface of the seat cushion skeleton; a motor is fixedly connected to the surface of the seat cushion skeleton by screws; a circular hole is provided inside the seat cushion skeleton, a metal bushing is provided inside the circular hole, a plastic bushing is fixedly connected to the inner surface of the metal bushing, a synchronizing rod is provided inside the plastic bushing, the synchronizing rod is powered by the motor, and a gear is fixedly connected to the side surface of the synchronizing rod; a plastic guide rail, at both ends of which a left guide rail and a right guide rail are respectively fixedly connected by screws, a connecting assembly is assembled on the upper surface of the plastic guide rail, and a linkage assembly is connected between the connecting assemblies; a plastic part fixed at the tail of the track belt, which is connected to a track belt hook plastic part and a plastic part fixed at the front of the track belt by a cotter pin, and the connection modes of the plastic part fixed at the tail of the track belt, the track belt hook plastic part and the plastic part fixed at the front of the track belt are end-to-end connection, and the plastic part fixed at the tail of the track belt is connected to a stamping part fixing bracket by a self-tapping screw.

[0008] According to a fixing structure for a face cover and a driving track belt provided by the present invention, thrust caps are provided at both ends of the synchronizing rod.

[0009] According to a fixing structure for a face cover and a driving track belt provided by the present invention, the connecting assembly includes a C-shaped stamping part slideway, an intermediate connecting sheet metal, an arc-shaped rack, a left limiting sheet metal, a right limiting sheet metal and a nut, and they are formed into a connecting assembly by welding, and the linkage assembly is assembled at the front end of the intermediate connecting sheet metal.

[0010] According to a fixing structure for a face cover and a driving track belt provided by the present invention, the linkage assembly includes a screw rod, a plastic roller and a bearing, the bearings are located at both ends of the plastic roller, the screw rod passes through the plastic roller and the bearings, and both ends of the screw rod are tightened by nuts.

[0011] According to a fixing structure for a face cover and a driving track belt provided by the present invention, the rack meshes with the gear, and the C-shaped stamping part slideway is in transmission connection with the large roller and the small roller.

[0012] According to a fixing structure for a face cover and a driving track belt provided by the present invention, the plastic part fixed at the tail of the track belt, the track belt hook plastic part, the plastic part fixed at the front of the track belt, the cotter pin and the fixing bracket form a driving track belt assembly, and there are two driving track belt assemblies in total, and the structures are symmetrical.

[0013] According to a fixing structure for a face cover and a driving track belt provided by the present invention, a rear limiting bracket is fixedly connected to the intermediate connecting sheet metal by screws.

[0014] Beneficial effects:

[0015] 1. In the present invention, the driving track is designed such that the hooks at both ends are connected by iron pins. This enables the driving track to slide more easily in the arc-shaped chute of the leg rest driven structure and increases the strength of the driven track structure. The driving track structure is novel, convenient for length adjustment, low in manufacturing cost, and if a single hook is broken, the hook can be directly replaced without scrapping the entire driving track.

[0016] 2. In the present invention, the profile strip is reliably clamped to the driving track, and the assembly is very convenient, providing good power for the expansion and winding of the foam. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the drawings and embodiments;

[0018] Figure 1 It is a side view structure diagram of a fixing structure of a face cover and a driving track according to the present invention;

[0019] Figure 2 It is an internal structure diagram of a fixing structure of a face cover and a driving track according to the present invention;

[0020] Figure 3 It is a track assembly structure diagram of a fixing structure of a face cover and a driving track according to the present invention;

[0021] Figure 4 It is an overall structure diagram of a fixing structure of a face cover and a driving track according to the present invention;

[0022] Figure 5 It is an exploded view of a track assembly of a fixing structure of a face cover and a driving track according to the present invention.

[0023] LEGEND DESCRIPTION:

[0024] 1. Seat cushion skeleton; 2. Synchronous rod; 3. Thrust cap; 4. Metal bushing; 5. Plastic bushing; 6. Motor; 7. Large roller; 8. Small roller; 9. Limit strip; 10. Gear; 12. Left guide rail; 13. Right guide rail; 14. Plastic guide rail; 16. Plastic drum; 17. Screw; 18. Bearing; 20. Connecting sheet metal; 21. Arc-shaped rack; 22. Left limit sheet metal; 23. Right limit sheet metal; 24. C-shaped stamping part chute; 25. Nut; 26. Rear limit bracket; 29. Fixed bracket; 31. Track tail fixing plastic part; 32. Hook plastic part; 33. Iron pin; 34. Track front fixing plastic part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The role of the accompanying drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation on the protection scope of the present invention.

[0026] Referring to Figures 1-5 , in an embodiment of the present invention, a fixing structure of a seat cover and a driving track includes a seat cushion frame 1. The seat cushion frame 1 is a rigid part. The large roller 7 and the small roller 8 are assembled onto the rivets of the seat cushion frame 1. The limiting strip 9 is assembled onto the seat cushion frame 1. The motor 6 is assembled onto the seat cushion frame 1 with screws. The metal bushing 4 is assembled into the round hole of the seat cushion frame 1. The plastic bushing 5 is assembled into the hole of the metal bushing 4. The synchronous rod 2 passes through the holes of the motor 6, the plastic bushing 5, and the gear 10. The thrust caps 3 are clamped at both ends of the synchronous rod 2;

[0027] The left arc plastic part guide rail 12 is fixed to the middle large plastic guide rail 14 with screws. The right arc plastic part guide rail 13 is fixed to the middle large plastic guide rail 14 with screws. The C-shaped stamping part slideway 24, the middle connecting sheet metal 20, the arc rack 21, the left limiting sheet metal 22, the right limiting sheet metal 23, and the nut 25 are welded together. The assembly formed by welding the C-shaped stamping part slideway 24, the middle connecting sheet metal 20, the arc rack 21, the left limiting sheet metal 22, the right limiting sheet metal 23, and the nut 25 is assembled onto the middle large plastic guide rail 14 with screws. The bearings 18 are installed on both sides of the front plastic drum 16. The screw rod 17 passes through the front plastic drum 16 and the bearings 18. The assembly of the screw rod 17, the plastic drum 16, and the bearings 18 is assembled to the front end of the middle connecting sheet metal 20. The nuts are tightened at both ends of the screw rod 17 to form a leg support driven structure.

[0028] The plastic part for fixing the tail of the track 31, the plastic part for the track hook 32, and the plastic part for fixing the front of the track 34 are threaded through with an iron pin 33 from end to end. Then, the stamping part fixing bracket 29 is fixed to the plastic part for fixing the tail of the track 31 with self-tapping screws to obtain a leg support driving track assembly. Another leg support driving track assembly is obtained by the same steps, and the two driving track assemblies are symmetrical.

[0029] The leg support driving track assembly is pushed between the large plastic guide rail 14 and the left guide rail 12,

[0030] The C-shaped stamping part slideway 24 is aligned with the large roller 7 and the small roller 8 on the seat cushion frame 1, and it is ensured that the rack 21 and the gear 10 enter the meshing state.

[0031] The stamping part fixing bracket 29 is fixed to the seat cushion frame 1 with self-tapping screws;

[0032] The leg support rear limiting bracket 26 is fixed to the middle connecting sheet metal 20 with screws.

[0033] Sew single arrow-shaped strips on both sides of the face cover, put the face cover on the foam, and then insert the sewn single arrow-shaped strips into the track hook 32 from the side. The small tongue can be deformed during the insertion process to facilitate assembly.

[0034] Working principle:

[0035] Leg rest retraction:

[0036] Power on the motor 6. The forward rotation of the motor 6 will drive the synchronous rod 2 to rotate forward. The forward rotation of the synchronous rod 2 will drive the gear 10 to rotate forward. The forward rotation of the gear 10 will drive the rack 21 to rotate reversely. At this time, the large roller 7 and the small roller 8 rotate on the rivets of the seat cushion frame 1 and roll relative to the C-shaped stamping part slideway 24, so that the leg rest driven structure is retracted under the seat cushion frame 1, the driving track assembly slides in the chute of the leg rest driven structure, the single arrow-shaped strip sewn on the face cover is retracted, and then the foam is retracted and hidden under the leg rest driven structure together under the seat cushion frame 1. When the left limit sheet metal 22 and the right limit sheet metal 23 contact the limit strip 9, the motor is blocked and the leg rest cannot be retracted backward anymore.

[0037] Leg rest extension:

[0038] Power on the motor 6. The reverse rotation of the motor 6 will drive the synchronous rod 2 to rotate reversely. The reverse rotation of the synchronous rod 2 will drive the gear 10 to rotate reversely. The reverse rotation of the gear 10 will drive the rack 21 to rotate forward. At this time, the large roller 7 and the small roller 8 rotate on the rivets of the seat cushion frame 1 and roll relative to the C-shaped stamping part slideway 24, so that the leg rest driven structure is stably extended forward, the driving track assembly slides in the chute of the leg rest driven structure, the single arrow-shaped strip sewn on the face cover is extended, and then the foam is extended to lift the passenger's calf. When the rear limit bracket 26 contacts the limit strip 9, the motor is blocked and the leg rest cannot be extended forward anymore.

[0039] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of the present invention.

Claims

1. A fixing structure of a face cover and a transmission track, characterized in that: include: A seat cushion frame (1), wherein a plurality of rivets are provided on the side surface of the seat cushion frame (1), a large roller (7) and a small roller (8) are rotatably connected to the side surface of the rivets, a limiting strip (9) is assembled on the lower surface of the seat cushion frame (1), and a motor (6) is fixedly connected to the surface of the seat cushion frame (1) via screws; A circular hole is provided inside the seat cushion frame (1), a metal bushing (4) is provided inside the circular hole, a plastic bushing (5) is fixedly connected to the inner surface of the metal bushing (4), a synchronization rod (2) is provided inside the plastic bushing (5), the synchronization rod (2) is powered by a motor (6), and a gear (10) is fixedly connected to the side surface of the synchronization rod (2); A plastic guide rail (14), wherein both ends of the plastic guide rail (14) are fixedly connected to a left guide rail (12) and a right guide rail (13) by screws, and a connection assembly is assembled on the upper surface of the plastic guide rail (14), and a linkage assembly is connected between the connection assemblies; A track tail fixing plastic part (31), wherein the track tail fixing plastic part (31) is connected to a track hook plastic part (32) and a track front fixing plastic part (34) via an iron pin (33); the track tail fixing plastic part (31), the track hook plastic part (32) and the track front fixing plastic part (34) are connected end to end; and the track tail fixing plastic part (31) is connected to a stamping part fixing bracket (29) via a self-tapping screw; The matching relationship between the track hook plastic part (32) and the face cover is that single arrow-shaped strips are sewn on both sides of the face cover, the face cover is put on the foaming equipment, and then the sewn single arrow-shaped strips are inserted into the track hook (32) from the side.

2. The fixing structure of the face cover and the transmission track according to claim 1, characterized in that: Thrust caps (3) are provided at both ends of the synchronization rod (2).

3. The fixing structure of the face cover and the transmission track according to claim 1, characterized in that: The connection assembly comprises a C-shaped stamping slideway (24), an intermediate connection sheet metal (20), an arc-shaped rack (21), a left limit sheet metal (22), a right limit sheet metal (23), and a nut (25), and the connection assembly is formed by welding. The linkage assembly is assembled at the front end of the intermediate connection sheet metal (20).

4. The fixing structure of the face cover and the transmission track according to claim 1, characterized in that: The linkage assembly comprises a screw (17), a plastic roller (16), and a bearing (18). The bearing (18) is located at both ends of the plastic roller (16). The screw (17) passes through the plastic roller (16) and the bearing (18). Both ends of the screw (17) are tightened by nuts.

5. The fixing structure of the face cover and the transmission track according to claim 3, characterized in that: The arc-shaped rack (21) is meshed with the gear (10), and the C-shaped stamping slideway (24) is transmission-connected with the large roller (7) and the small roller (8).

6. The fixing structure of the face cover and the transmission track according to claim 1, characterized in that: The crawler tail fixing plastic part (31), the crawler hook plastic part (32), the crawler front fixing plastic part (34), the iron pin (33) and the fixing bracket (29) form a transmission crawler assembly. There are two transmission crawler assemblies in total and the structures are symmetrical.

7. The fixing structure of the face cover and the transmission track according to claim 3, characterized in that: The middle connecting sheet metal (20) is fixedly connected to a rear limiting bracket (26) via screws.

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