CN219007670U - Concealed seat leg support with C-shaped arc chute and double rollers - Google Patents

Abstract

The utility model relates to the technical field of automobile seats, and discloses a C-shaped arc chute and double-roller concealed seat leg support which comprises a seat cushion framework, a synchronous rod and the like, wherein a left sheet metal support and rivets are riveted into an assembly and then welded with the seat cushion framework, a right sheet metal support and rivets are riveted into an assembly and then welded with the seat cushion framework, and a middle sheet metal support and the seat cushion framework are welded; the large roller and the small roller are assembled on the rivet; the left limit strip and the right limit strip are assembled to the middle sheet metal bracket; the motor is assembled to the seat cushion frame using a first screw. The concealed seat leg support with the C-shaped arc chute and the double rollers adopts the C-shaped arc chute and double rollers, so that the problem of up-down, left-right shaking moment during the operation of the leg support can be solved, the process is simple, the assembly is convenient, and the cost is low; the large plastic part is decomposed into three plastic parts, and the three plastic parts are connected by adopting the screws, so that the problem that the large plastic part cannot be ejected in the process is solved.

Description

Concealed seat leg support with C-shaped arc chute and double rollers

Technical Field

The utility model relates to the technical field of automobile seats, in particular to a C-shaped arc chute and double-roller concealed seat leg support.

Background

The existing shank support in the market can only be applied to seats in front rows or middle rows due to the space of the rear rows of the automobile body, but not to seats in the rear rows. With the development of society, the demands of people on the functions and comfort of products are increasing, and users hope that leg supports can support the lower legs when riding in the back row, so that the users can sit more comfortably. In the using and adjusting process of the leg support, the motor is electrified and then rotates to drive the transmission rod, the transmission rod can drive the metal gear to rotate, the metal gear rotates to drive the metal arc-shaped rack to rotate, and the arc-shaped rack rotates to drive the leg support driven structure to slide out from the lower part of the seat cushion to prop up the lower legs of passengers.

The arc-shaped rack of the metal rack of the existing leg support structure (1) is too thick, cannot be processed by adopting the existing fine blanking mode, and greatly increases the cost by adopting machining. (2) The large plastic part cannot be demolding, and (3) the guide chute for the leg rest to run is a C-shaped stamping part chute, so that the clamping distance of the C-shaped stamping part chute is short, the leg rest has obvious shaking amount and poor rigidity. (4) After the needle roller retainer plastic part is arranged on the C-shaped stamping part slideway, the needle roller bearing is difficult to assemble into the needle roller retainer plastic part, so that the assembly process is difficult to realize. (5) Even after the needle roller bearing and the needle roller retainer are assembled with ease, the clearance between the upper needle roller and the lower needle roller is difficult to ensure.

Summary of the prior art: the leg is moved up and down and is moved left and right when the operation is carried out, and the use experience requirement of passengers can not be met.

Therefore, we propose a C-shaped arc chute and a double-roller concealed seat leg support.

Disclosure of Invention

The utility model mainly solves the technical problems in the prior art and provides a C-shaped arc chute and double-roller concealed seat leg support.

In order to achieve the aim, the utility model adopts the following technical scheme that the concealed seat leg support with the C-shaped arc chute and the double rollers comprises a seat cushion framework, a synchronous rod, a thrust cap, a metal bushing, a plastic bushing, a motor, a left sheet metal bracket, rivets, a middle sheet metal bracket, a right sheet metal bracket, gears, small rollers, large rollers, a left limit bar, a right limit bar, a first screw, a left arc plastic piece guide rail, a right arc plastic piece guide rail, a middle large plastic guide rail, a second screw, a front end plastic roller, a screw rod, a nut, a middle connection sheet metal, an arc rack, a left limit sheet metal, a right limit sheet metal, a C-shaped slide way, limit rubber, a third screw, a fourth screw and a bearing, wherein the left sheet metal bracket is riveted with the rivets to form an assembly and then welded with the seat cushion framework, the right sheet metal bracket is riveted with the rivets to form an assembly and then welded with the seat cushion framework; the large roller and the small roller are assembled on the rivet; the left limit strip and the right limit strip are assembled to the middle sheet metal bracket; the motor is assembled to the seat cushion framework by adopting a first screw; the metal bushing is assembled into round holes of the seat cushion framework, the left sheet metal bracket, the right sheet metal bracket and the middle sheet metal bracket; a plastic bushing is assembled into the metal bushing hole; the synchronous rod passes through holes of the motor, the plastic bushing and the gear; the thrust caps are clamped at two ends of the synchronous rod; the left arc-shaped plastic part guide rail is fixed on the middle large plastic guide rail by a second screw; the right arc-shaped plastic part guide rail is fixed on the middle large plastic guide rail by a second screw.

Preferably, the C-shaped stamping part slide way, the middle connecting metal plate, the arc-shaped rack, the left limiting metal plate and the right limiting metal plate are welded together.

Preferably, an assembly formed by welding the C-shaped stamping part slide way, the middle connecting metal plate, the arc-shaped rack, the left limiting metal plate and the right limiting metal plate together is assembled on the middle large plastic guide rail by a fourth screw; bearings are mounted to both sides of the front plastic drum.

Preferably, the screw passes through a front end plastic roller and a bearing; the assembly of the screw, the plastic roller and the bearing is assembled to the front end of the middle connecting sheet metal; the nuts are screwed to the two ends of the screw.

Preferably, the C-shaped stamping part slideway is meshed with the rack and the gear for the large roller and the small roller.

Preferably, the limit rubber slides into the rear end of the C-shaped stamping part slideway, and the limit rubber is fixed on the C-shaped stamping part slideway by a third screw.

Preferably, the left arc-shaped plastic part guide rail and the right arc-shaped plastic part guide rail are in symmetrical states.

Preferably, the large plastic part is decomposed into three plastic parts which are connected by screws, so that the problem that the large plastic part cannot be ejected in the process is solved.

Advantageous effects

The utility model provides a C-shaped arc chute and a double-roller concealed seat leg support. The beneficial effects are as follows:

(1) This concealed seat leg of C type circular arc spout and two gyro wheels holds in palm, this scheme has integrated the mechanical type handle of multi-gear regulation and self-reset dual function, adopts C type circular arc spout + two gyro wheels structure, can not only solve the problem of the fluctuation volume about the leg when holding in palm the operation, simple process moreover, and the assemblability is convenient, with low costs.

(2) The large plastic part is decomposed into three plastic parts, and the three plastic parts are connected by adopting screws, so that the problem that the large plastic part cannot be ejected from the mold in the process is solved.

(3) The novel structure of the leg support enables the thickness of the metal arc-shaped rack to be 6mm, and mass production is achieved by directly adopting a fine blanking process, so that the industrialization cost can be greatly reduced.

(4) The concealed seat leg support with the C-shaped arc chute and the double rollers changes the position of the C-shaped stamping part slideway structure from the middle to the two sides, and increases the length of the C-shaped stamping part slideway, so that the leg support mechanism can be always in a stable state in the whole operation process, and the rigidity and the stability of the leg support are improved.

(5) The concealed seat leg support with the C-shaped arc chute and the double rollers is in vertical contact with the C-shaped stamping part slide way by using the double roller structure, so that the leg support is in contact with the C-shaped stamping part slide way in the sliding-out process, the double rollers and the C-shaped stamping part slide way do pure rolling movement, and friction force born by the sliding-out of the leg support is reduced. The leg rest is stable in the running process, and the shaking amount cannot be felt by passengers in the using process.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments can be derived from the drawings provided without the inventive effort.

The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the utility model, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present utility model, should fall within the ambit of the technical disclosure.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a perspective view of a leg rest driven structure of the present utility model;

FIG. 3 is a schematic view of the leg rest of the present utility model in an expanded state;

fig. 4 is a schematic view of the leg rest retracted state of the present utility model.

Legend description:

1. a seat cushion framework; 2. a synchronizing lever; 3. a thrust cap; 4. a metal bushing; 5. a plastic bushing; 6. a motor; 7. a left sheet metal bracket; 8. a rivet; 9. a middle sheet metal bracket; 10. a right sheet metal bracket; 11. a gear; 12. a small roller; 13. a large roller; 14. a left limit bar; 15. a right limit bar; 16. a first screw; 17. a left arc-shaped plastic part guide rail; 18. a right arc-shaped plastic part guide rail; 19. a middle large plastic guide rail; 20. a second screw; 21. a front end plastic roller; 22. a screw; 23. a nut; 24. the middle is connected with a metal plate; 25. an arc-shaped rack; 26. left limit sheet metal; 27. right limit sheet metal; 28. c-shaped stamping part slideway; 29. limit rubber; 30. a third screw; 31. a fourth screw; 32. and (3) a bearing.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The C-shaped arc chute and double-roller concealed seat leg support is shown in fig. 1-4 and comprises a seat cushion framework 1, a synchronizing rod 2, a thrust cap 3, a metal bushing 4, a plastic bushing 5, a motor 6, a left sheet metal bracket 7, a rivet 8, a middle sheet metal bracket 9, a right sheet metal bracket 10, a gear 11, a small roller 12, a large roller 13, a left limit bar 14, a right limit bar 15, a first screw 16, a left arc plastic piece guide rail 17, a right arc plastic piece guide rail 18, a middle large plastic guide rail 19, a second screw 20, a front end plastic roller 21, a screw rod 22, a nut 23, a middle connection sheet metal 24, an arc rack 25, a left limit sheet metal 26, a right limit sheet metal 27, a C-shaped stamping part slide 28, a limit rubber 29, a third screw 30, a fourth screw 31 and a bearing 32;

the seat cushion frame 1 can be regarded as a rigid part. The left sheet metal support 7 and the rivet 8 are riveted into an assembly and then welded with the seat cushion framework 1, the right sheet metal support 10 and the rivet 8 are riveted into an assembly and then welded with the seat cushion framework 1, and the middle sheet metal support 9 is welded with the seat cushion framework 1; the large roller 13 and the small roller 12 are assembled to the rivet 8; the left limit bar 14 and the right limit bar 15 are assembled to the middle sheet metal bracket 9; the motor 6 is assembled to the seat cushion frame 1 by using a first screw 16; the metal bushing 4 is assembled into round holes of the seat cushion framework 1, the left sheet metal bracket 7, the right sheet metal bracket 10 and the middle sheet metal bracket 9; the plastic bushing 5 is assembled into the metal bushing 4 hole; the synchronizing rod 2 passes through the holes of the motor 6, the plastic bushing 5 and the gear 11; the thrust caps 3 are clamped at two ends of the synchronizing rod 2; the left arc-shaped plastic part guide rail 17 is fixed on the middle large plastic guide rail 19 by a second screw 20; the right arcuate plastic rail 18 is secured to the middle large plastic rail 19 with a second screw 20.

C type stamping workpiece slide 28, intermediate junction panel beating 24, arc rack 25, left spacing panel beating 26 and right spacing panel beating 27 weld together.

The assembly formed by welding the C-shaped stamping part slide 28, the middle connecting sheet metal 24, the arc-shaped rack 25, the left limiting sheet metal 26 and the right limiting sheet metal 27 together is assembled on the middle large plastic guide rail 19 by a fourth screw 31; bearings 32 are mounted to both sides of the front plastic drum 21.

The screw 22 passes through the front plastic roller 21 and the bearing 32; the assembly of the screw 22, the plastic roller 21 and the bearing 32 is assembled to the front end of the intermediate connection sheet metal 24; nuts 23 are screwed to both ends of the screw 22.

The C-shaped stamping part slideway 28 is meshed with the gear 11 on the large roller 13 and the small roller 12 and the arc-shaped rack 25.

The limit rubber 29 slides into the rear end of the C-shaped stamping slideway 28, and a third screw 30 fixes the limit rubber 29 on the C-shaped stamping slideway 28.

The left arc-shaped plastic part guide rail 17 and the right arc-shaped plastic part guide rail 18 are in a symmetrical state.

The arc-shaped rack 25 of the utility model is originally machined with the thickness of 20mm, and is now optimized to be 6mm in thickness by adopting a fine blanking process, thereby realizing mass production and greatly reducing the industrialization cost.

Leg rest working principle:

leg support is retracted:

the motor 6 is electrified, the synchronous rod 2 is driven to rotate positively by the motor 6, the gear 11 is driven to rotate positively by the synchronous rod 2, the arc-shaped rack 25 is driven to rotate reversely by the gear 11, the large roller 13 and the small roller 12 rotate on the rivet 8 at the moment and roll relative to the C-shaped stamping part slide way 28, so that the leg rest driven structure is retracted below the seat cushion framework 1, and when the left limit sheet metal 26 and the right limit sheet metal 27 are contacted with the left limit strip 14 and the right limit strip 15, the motor is blocked, and the leg rest cannot be retracted backwards.

The leg rest is unfolded:

the motor 6 is electrified, the motor 6 can drive the synchronizing rod 2 to rotate reversely, the synchronizing rod 2 can drive the gear 11 to rotate reversely, the gear 11 can drive the arc-shaped rack 25 to rotate positively, the large roller 13 and the small roller 12 rotate on the rivet 8 at the moment and roll relative to the C-shaped stamping part slideway 28, so that the leg support is stably unfolded to the front, the lower leg of a passenger is supported, when the limiting rubber 29 is in contact with the small roller 12, the motor is blocked, and the leg support can not be unfolded forwards and backwards.

The mechanical handle integrating the dual functions of multi-gear adjustment and automatic reset adopts a C-shaped arc chute and double roller structure, so that the problem of up-down, left-right shaking amount during the running of the leg can be solved, the process is simple, the assembly is convenient, and the cost is low; the large plastic part is decomposed into three plastic parts, and the three plastic parts are connected by adopting screws, so that the problem that the large plastic part cannot be ejected in the process is solved;

the novel leg support structure enables the thickness of the metal arc-shaped rack to be 6mm, and mass production is directly achieved by adopting a fine stamping process, so that the industrialization cost can be greatly reduced, the metal arc-shaped rack in the prior art is too thick, cannot be processed by adopting the existing fine stamping mode, the cost can be greatly increased by adopting machining, the thickness of the metal rack is reduced, and the manufacturing cost is greatly reduced by adopting the fine stamping process.

The position of the C-shaped stamping part slideway structure is changed from the middle to the two sides, and the length of the C-shaped stamping part slideway is increased, so that the leg support mechanism can be always in a stable state in the whole operation process, and the rigidity and the stability of the leg support are improved. The double-roller structure is used for being in up-down contact with the C-shaped stamping part slideway, so that the leg support is kept in contact with the C-shaped stamping part slideway in the sliding-out process, the double-roller structure and the C-shaped stamping part slideway do pure rolling motion, and friction force on the leg support sliding-out is reduced. The leg rest is stable in the running process, and the shaking amount cannot be felt by passengers in the using process.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides a concealed seat leg holds in palm of C type circular arc spout and two gyro wheels, including seatpad skeleton (1), synchronizing bar (2), thrust cap (3), metal bush (4), plastics bush (5), motor (6), left panel beating support (7), rivet (8), middle panel beating support (9), right panel beating support (10), gear (11), little gyro wheel (12), big gyro wheel (13), left spacing (14), right spacing (15), first screw (16), left arc plastic part guide rail (17), right arc plastic part guide rail (18), middle big plastic guide rail (19), second screw (20), front end plastic drum (21), screw rod (22), nut (23), intermediate connection panel beating (24), arc rack (25), left limit panel beating (26), right limit panel beating (27), C formula stamping workpiece slide (28), spacing rubber (29), third screw (30), fourth screw (31) and bearing (32), its characterized in that: the left sheet metal bracket (7) is welded with the seat cushion framework (1) after being riveted with the rivet (8), the right sheet metal bracket (10) is welded with the seat cushion framework (1) after being riveted with the rivet (8), and the middle sheet metal bracket (9) is welded with the seat cushion framework (1); the large roller (13) and the small roller (12) are assembled on the rivet (8); the left limit strip (14) and the right limit strip (15) are assembled to the middle sheet metal bracket (9); the motor (6) is assembled to the seat cushion framework (1) by adopting a first screw (16); the metal bushing (4) is assembled into round holes of the seat cushion framework (1), the left sheet metal bracket (7), the right sheet metal bracket (10) and the middle sheet metal bracket (9); the plastic bush (5) is assembled into the hole of the metal bush (4); the synchronizing rod (2) passes through holes of the motor (6), the plastic bushing (5) and the gear (11); the thrust caps (3) are clamped at two ends of the synchronous rod (2); the left arc-shaped plastic part guide rail (17) is fixed on the middle large plastic guide rail (19) by a second screw (20); the right arc-shaped plastic part guide rail (18) is fixed on the middle large plastic guide rail (19) by a second screw (20).
2. 2. The concealed seat leg rest of the C-shaped circular arc chute and double roller of claim 1, wherein: c type stamping workpiece slide (28), intermediate junction panel beating (24), arc rack (25), left spacing panel beating (26) and right spacing panel beating (27) weld together.
3. 3. The concealed seat leg rest of the C-shaped circular arc chute and double roller of claim 2, wherein: the assembly formed by welding the C-shaped stamping part slide way (28), the middle connecting metal plate (24), the arc-shaped rack (25), the left limiting metal plate (26) and the right limiting metal plate (27) together is assembled on the middle large plastic guide rail (19) by a fourth screw (31); bearings (32) are mounted to both sides of the front plastic drum (21).
4. 4. The concealed seat leg rest with C-shaped circular arc chute and double rollers according to claim 3, wherein: the screw (22) passes through the front end plastic roller (21) and the bearing (32); the assembly of the screw (22), the plastic roller (21) and the bearing (32) is assembled to the front end of the middle connecting sheet metal (24); the nuts (23) are screwed to both ends of the screw (22).
5. 5. The concealed seat leg rest with the C-shaped arc chute and the double rollers according to claim 4, wherein: the C-shaped stamping part slideway (28) is meshed with the gear (11) on the large roller (13) and the small roller (12), and the arc-shaped rack (25).
6. 6. The concealed seat leg rest with C-shaped arc chute and double rollers according to claim 5, wherein: the limiting rubber (29) slides into the rear end of the C-shaped stamping part slideway (28), and the limiting rubber (29) is fixed on the C-shaped stamping part slideway (28) by a third screw (30).
7. 7. The concealed seat leg rest of the C-shaped circular arc chute and double roller of claim 1, wherein: the left arc-shaped plastic part guide rail (17) and the right arc-shaped plastic part guide rail (18) are in symmetrical states.

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