Automobile seat with hidden armrests

Abstract

The automobile seat comprises a backrest, a mounting base is arranged in the middle of the backrest, a handrail mechanism is arranged on the mounting base, the handrail mechanism comprises a transmission rod, a handrail fixedly connected to the outer end of the transmission rod and a rotary disc rotationally mounted on the transmission rod, and a mounting through hole is formed in the rotary disc. The transmission rod can be axially and slidably arranged in the mounting through hole of the turntable in a penetrating manner; a limiting assembly for enabling the transmission rod to synchronously rotate along with the turntable is arranged between the turntable and the transmission rod; the handrail mechanism further comprises a first power assembly and a second power assembly, the first power assembly is used for driving the handrail to stretch out and draw back, and the second power assembly is used for driving the handrail to rotate. A storage groove is formed in the side portion of the backrest, the first power assembly drives the armrests to stretch out and draw back inwards and outwards, and the armrests can be switched between being stored in the storage groove and stretching out of the storage groove. The folding armrest has the beneficial effects that step-by-step adjustment of extension and angle rotation of the armrest is achieved, and the storage compactness is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts, and in particular to an automobile seat with hidden armrests. Background Art

[0002] As people's living standards improve, consumers have higher and higher requirements for the quality of car interiors and riding comfort. In order to meet the diversified needs of consumers, more and more car models are equipped with seat armrests to improve riding comfort. Traditional car seat armrests are mainly in two forms, one is standing on the side of the seat back and can be manually turned forward, and the other is fixed on both sides of the seat. These two traditional forms have single functions, are not convenient to use, and take up space in the car when not in use.

[0003] In order to meet the increasingly changing in-car application environment, hidden seat armrests have appeared on the market, that is, armrests that can be stored on the side of the seat and unfolded when in use. Although hidden seat armrests reduce the space occupied on both sides of the seat when not in use, most of them currently have only two adjustable states: extended state and folded state, which is not smart enough to meet the needs of different passengers. In addition, most armrests are adjusted in a compound motion, with the armrests extending and rotating at the same time. On the one hand, the armrests cannot rotate independently and cannot meet the requirements of large-angle swings. On the other hand, the armrests swing across a large space, and the compactness of the seat after folding still needs to be improved. Summary of the invention

[0004] In view of this, the present invention provides a car seat with a hidden armrest, which can achieve step-by-step adjustment of the armrest extension and angle rotation, which is beneficial to electric control and improves storage compactness.

[0005] To achieve the above purpose, the technical solution of the present invention is as follows:

[0006] A car seat with a hidden armrest comprises a backrest, a mounting base is provided in the middle of the backrest, an armrest mechanism is provided on the mounting base, the armrest mechanism comprises a transmission rod extending in the width direction of the backrest, an armrest fixedly connected to the outer end of the transmission rod, and a turntable rotatably mounted on the transmission rod, the turntable is provided with a mounting through hole, the transmission rod can be axially slidably inserted into the mounting through hole of the turntable, a limit assembly is provided between the turntable and the transmission rod, and the limit assembly is used to enable the transmission rod to rotate synchronously with the turntable;

[0007] The armrest mechanism further includes a first power assembly and a second power assembly, wherein the first power assembly is used to drive the transmission rod to reciprocate along the axial direction of the rotating disk to drive the armrest to extend and retract, and the second power assembly is used to drive the rotating disk to rotate to drive the armrest to rotate;

[0008] The side portion of the backrest is provided with a storage slot, and the first power assembly drives the armrest to telescope inward and outward, so that the armrest can be switched between being stored in the storage slot and extending out of the storage slot.

[0009] With the above structure, the armrest can be hidden and stored in the side of the seat, and the shape of the storage groove is adapted to the shape of the armrest, so the storage is compact. The armrest's telescopic movement and rotation movement are performed independently, and the armrest's extension and angle rotation can be adjusted in steps. It has multiple adjustable states and is flexible to use, which can meet the needs of different passengers.

[0010] Preferably, the position limiting assembly includes an anti-rotation strip fixedly arranged along the axial direction on the outer side of the transmission rod, and the side wall of the mounting through hole is provided with an anti-rotation groove adapted to the anti-rotation strip, and the anti-rotation strip and the anti-rotation groove are slidably matched. The above structure is simple, and the transmission rod and the turntable rotate synchronously to drive the handrail to rotate.

[0011] As a preferred embodiment, a strip groove is formed in the axial direction of the side wall of the transmission rod, and the anti-rotation strip is fixedly installed in the strip groove. The above structure is easy to install and has a stable structure.

[0012] Preferably, the mounting base includes a backrest crossbeam and a backrest side plate, the transmission rod is reciprocatingly mounted on the backrest crossbeam, and the turntable is rotatably mounted on the backrest side plate. The above structure is compact and easy to install.

[0013] As a preference, the first power assembly comprises a first motor fixed on the backrest crossbeam, a screw driven by the first motor, and a threaded fitting that is threadedly fitted with the screw, the screw being rotatably arranged on the backrest crossbeam, the transmission rod being a hollow structure, being sleeved on the screw with a gap, and the threaded fitting being installed inside the transmission rod. The above structure is adopted to transmit power.

[0014] As a preferred embodiment, the side wall of the threaded fitting is provided with a guide structure protruding outward in its radial direction, the backrest crossbeam is provided with a limit groove along the axial direction of the screw rod, and the guide structure is slidably mounted in the limit groove. The above structure is adopted to limit the rotation of the threaded fitting.

[0015] As a preferred embodiment, the inner end side wall of the transmission rod is provided with an arc groove along its circumference, and the guide structure is also slidably sleeved in the arc groove. With the above structure, the transmission rod moves synchronously with the threaded mating part along the axial direction, and the transmission rod can also rotate independently.

[0016] Preferably, the second power assembly includes a second motor fixed to the side plate of the backrest, the output shaft of the second motor is connected to a gear, the outer side of the turntable is provided with a toothed portion meshing with the gear, and the turntable is connected to the gear power. With the above structure, the turntable is rotated through gear transmission to drive the armrest to rotate.

[0017] As a preference, the inner end of the anti-rotation strip is provided with a first limiting portion protruding outwards, and the outer side wall of the transmission rod is provided with a second limiting portion protruding outwards. With the above structure, the telescopic position of the armrest is limited.

[0018] As a preferred embodiment, an armrest mechanism is provided on each of the left and right sides of the mounting base, and the screw rods of the two armrest mechanisms are driven by a first motor, and the first motor connects the two screw rods through a synchronization rod, and the two screw rods rotate in opposite directions. The above structure is compact and space-saving, and the armrests on both sides can be synchronously extended and retracted by driving a first motor, which is convenient for adjustment and improves the riding comfort.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. A car seat with a hidden armrest provided by the present invention has a storage groove adapted to the shape of the armrest on the side of the car seat, and the armrest can be hidden and stored in the storage groove, and the overall storage layout is simple and compact.

[0021] 2. The telescopic movement and rotation movement of the seat armrest are carried out independently. The extension and angle rotation of the armrest can be adjusted in steps. It is flexible to use, meets the diverse usage needs of passengers, and improves riding comfort.

[0022] 3. The screws of the left and right armrest mechanisms rotate in opposite directions. The armrests on both sides can be extended and retracted synchronously by one motor drive, with good synchronization, easy installation and adjustment, and space saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a side view of the seat;

[0024] Figure 2 It is a schematic diagram of the internal structure of the seat back A;

[0025] Figure 3 It is a schematic diagram of the structure of the installation base 1;

[0026] Figure 4 It is a structural schematic diagram of the handrail mechanism B;

[0027] Figure 5 It is a schematic diagram of the transmission of the screw rod 62;

[0028] Figure 6 It is a schematic diagram of the structure of the armrest 4 in the folded state;

[0029] Figure 7 is a schematic diagram of the armrest 4 being unfolded to the extreme position;

[0030] Figure 8 A schematic diagram showing the limiting groove 11a;

[0031] Fig. 9 A schematic diagram showing the connection between two screw rods 62;

[0032] Fig.10 It is a schematic diagram of the armrest 4 being located in the storage groove C. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with embodiments and drawings.

[0034] like Figure 1 and Figure 2 As shown, a car seat with hidden armrests includes a backrest A, a mounting base 1 is provided in the middle of the backrest A, and an armrest mechanism B is provided on the left and right sides of the mounting base 1. Figure 3 As shown, the mounting base 1 includes a backrest crossbeam 11 and a backrest side plate 12 perpendicular to the backrest crossbeam 11, and the backrest crossbeam 11 is along the width direction of the backrest A. Figure 4 As shown, the armrest mechanism B includes a transmission rod 3 reciprocatingly mounted on the backrest crossbeam 11, an armrest 4 fixedly connected to the outer end of the transmission rod 3, and a turntable 2 rotatably mounted on the transmission rod 3, wherein a mounting through hole 2a is opened in the middle position of the turntable 2, and the transmission rod 3 can be axially slidably penetrated into the mounting through hole 2a.

[0035] like Figure 5 As shown, a limit assembly 5 is provided between the turntable 2 and the transmission rod 3 for enabling the transmission rod 3 to rotate synchronously with the turntable 2. A strip groove 3c is axially provided on the side wall of the transmission rod 3. The limit assembly 5 includes an anti-rotation strip 51 axially provided on the outer side of the transmission rod. The lower end of the anti-rotation strip 51 is fixedly installed in the strip groove 3c. An anti-rotation groove 2b adapted to the anti-rotation strip 51 is provided on the side wall of the mounting through hole 2a. The anti-rotation strip 51 is slidably fitted with the anti-rotation groove 2b.

[0036] like Figure 6 As shown, the armrest mechanism B also includes a second power assembly 7, which includes a second motor 64 fixedly mounted on the backrest side plate 12, the output shaft of the second motor 64 is connected to a gear 65, the outer side of the turntable 2 is provided with a tooth portion 2c meshing with the gear 65, the turntable 2 is connected to the gear 65 through the tooth portion 2c, the second motor 64 drives the gear 65 to rotate, and the transmission rod 3 rotates under the transmission action of the turntable 2 to drive the armrest 4 to rotate.

[0037] like Figure 5 and Figure 7As shown, the armrest mechanism B also includes a first power assembly 6, which includes a first motor 61 fixed on the backrest crossbeam 11, a screw rod 62 driven by the first motor 61, and a threaded fitting 63 threadably mated with the screw rod 62, and the screw rod 62 is rotatably arranged on the backrest crossbeam 11. The transmission rod 3 is a hollow structure, which is loosely sleeved on the screw rod 62, and the threaded fitting 63 is installed inside the transmission rod 3. The side wall of the threaded fitting 63 is provided with a guide structure 631 protruding radially outward, and the inner end side wall of the transmission rod 3 is provided with an arc groove 3a along its circumference, and the guide structure 631 is slidably sleeved in the arc groove 3a. The transmission rod 3 can rotate relative to the threaded fitting 63, and the rotation angle between the two is defined by the movable range of the guide structure 631 in the arc groove 3a. As shown Figure 8 As shown, a limiting groove 11a is provided on the backrest crossbeam 11 along the axial direction of the screw rod 62, and the guide structure 631 passes through the arc groove 3a, and the end is also slidably sleeved in the limiting groove 11a. The first motor 61 drives the screw rod 62 to rotate, and the threaded fitting 63 is restricted by the limiting groove 11a to move along the axial direction of the screw rod 62, and the transmission rod 3 slides synchronously with the threaded fitting 63 to drive the armrest 4 to extend and retract.

[0038] like Figure 5 As shown, in this embodiment, the inner end of the anti-rotation strip 51 is provided with a first limiting portion 51a protruding outward, and the outer end side wall of the transmission rod 3 is provided with a second limiting portion 3b protruding outward, and the first limiting portion 51a and the second limiting portion 3b are both rectangular. When the transmission rod 3 slides, the turntable 2 cooperates with the first limiting portion 51a and the second limiting portion 3b to limit the extreme positions of the inner and outer ends of the armrest 4, that is, to define the travel of the telescopic movement of the armrest 4.

[0039] like Figure 3 and Fig. 9 As shown, an armrest mechanism B is provided on each of the left and right sides of the mounting base 1. The screw rods 62 of the two armrest mechanisms B are driven by a first motor 61. The first motor 61 connects the two screw rods 62 via a synchronization rod 66. The threads of the two screw rods 62 are opposite to each other, and can achieve synchronous extension and retraction, which saves the installation space inside the seat back A and ensures the synchronization of the extension and retraction of the armrests 4 on both sides, thereby improving the riding comfort of passengers. Figure 1 and Fig.10 As shown, a storage groove C is provided on the side of the seat back A, and the armrest 4 can be hidden and stored in the side of the seat, and the shape of the storage groove C is adapted to the shape of the armrest 4, and the storage layout is compact.

[0040] like Figure 7As shown, the working principle of the unfolding process of the armrest 4 is as follows: the first motor 61 drives the lead screw 62 to rotate, and the threaded fitting 63 moves outward along the lead screw under the limiting effect of the limit groove 11a, and the transmission rod 3 moves synchronously with the threaded fitting 63 under the limiting effect of the width of the arc groove 3a, so as to drive the armrest 4 to extend outward. In this process, the anti-rotation strip 51 cooperates with the anti-rotation groove 2b, and the transmission rod 3 cannot rotate when the turntable 2 does not rotate. The extreme position of the extension of the armrest 4 is the position where the first limit portion 51a is against the side of the turntable 2. Within this range, the armrest 4 can stop at any position. After the armrest 4 is extended, the second motor 64 drives the gear 65 to rotate, and the gear 65 engages with the outer tooth portion 2c of the turntable 2 to drive the turntable 2 to rotate. The transmission rod 3 rotates synchronously with the turntable 2 to drive the armrest 4 to rotate. In this process, the transmission rod 3 rotates relative to the threaded fitting 63, and the guide structure 631 slides relative to the arc groove 3a. The limit position of the rotation of the armrest 4 corresponds to the length of the arc groove 3a. When the guide structure 631 is located at the end positions of the two ends of the arc groove 3a, the armrest 4 is in two limit positions. Within the range of the two limit positions, the armrest 4 can be maintained at any position.

[0041] like Figure 6 As shown, the working principle of the folding process of the armrest 4 is as follows: the second motor 64 drives the gear 65 to rotate, the turntable 2 rotates under the transmission action of the gear 65, and the transmission rod 3 rotates synchronously with the turntable 2 under the limiting action of the limit assembly 5 to drive the armrest 4 to rotate. After the guide structure 631 slides relatively to the end position of the arc groove 3a, the first motor drives the screw rod 61 to drive the screw rod 62 to rotate, and the transmission rod 3 moves inward under the guiding and limiting action of the limit groove 11a and the arc groove 3a. When the second limit portion 3b presses against the side of the turntable 2, the armrest 4 is just received in the receiving groove C.

[0042] In this embodiment, after the armrest 4 extends outward and leaves the storage slot C, the rotational movement and telescopic movement of the armrest 4 do not interfere with each other, and the extension and angle rotation of the armrest 4 can be adjusted in steps, that is, the armrest 4 can be extended outward first and then rotated forward, or rotated forward first and then extended outward, or performed simultaneously, and can be maintained at any position within a certain range, which is conducive to electric control, has a variety of adjustable states, is flexible to use, and can meet the needs of different passengers.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention, and such changes all fall within the scope of protection of the present invention.

Claims

1. A car seat with hidden armrests, comprising a backrest (A), characterized in that: A mounting base (1) is provided in the middle of the backrest (A), an armrest mechanism (B) is provided on the mounting base (1), the armrest mechanism (B) comprises a transmission rod (3) extending in the width direction of the backrest (A), an armrest (4) fixedly connected to the outer end of the transmission rod (3), and a turntable (2) rotatably mounted on the transmission rod (3), the turntable (2) being provided with a mounting through hole (2a), the transmission rod (3) being axially slidable through the mounting through hole (2a) of the turntable (2), a limit assembly (5) being provided between the turntable (2) and the transmission rod (3), the limit assembly (5) being used to enable the transmission rod (3) to rotate synchronously with the turntable (2); The armrest mechanism (B) further comprises a first power assembly (6) and a second power assembly (7), wherein the first power assembly (6) is used to drive the transmission rod (3) to move back and forth along the axial direction of the turntable (2) so as to drive the armrest (4) to telescopically move, and the second power assembly (7) is used to drive the turntable (2) to rotate so as to drive the armrest (4) to rotate; The side of the backrest (A) is provided with a storage groove (C), and the first power assembly (6) drives the armrest (4) to move inward and outward, so that the armrest (4) can be switched between being stored in the storage groove (C) and extending out of the storage groove (C).

2. The car seat with hidden armrests according to claim 1, characterized in that: The position limiting assembly (5) comprises an anti-rotation strip (51) fixedly arranged along the axial direction on the outer side of the transmission rod (3); a side wall of the mounting through hole (2a) is provided with an anti-rotation groove (2b) adapted to the anti-rotation strip (51); and the anti-rotation strip (51) is slidably matched with the anti-rotation groove (2b).

3. The car seat with hidden armrests according to claim 2, characterized in that: A strip groove (3c) is provided on the side wall of the transmission rod (3) along the axial direction, and the anti-rotation strip (51) is fixedly installed in the strip groove (3c).

4. The car seat with hidden armrests according to claim 1, characterized in that: The mounting base (1) comprises a backrest crossbeam (11) and a backrest side plate (12), the transmission rod (3) is reciprocatingly mounted on the backrest crossbeam (11), and the turntable (2) is rotatably mounted on the backrest side plate (12).

5. The car seat with hidden armrests according to claim 4, characterized in that: The first power assembly (6) comprises a first motor (61) fixed on the backrest cross beam (11), a screw rod (62) driven by the first motor (61), and a threaded fitting (63) threadedly fitted with the screw rod (62); the screw rod (62) is rotatably arranged on the backrest cross beam (11); the transmission rod (3) is a hollow structure, which is sleeved on the screw rod (62) with a gap; and the threaded fitting (63) is installed inside the transmission rod (3).

6. The car seat with hidden armrests according to claim 5, characterized in that: The side wall of the threaded fitting (63) is provided with a guide structure (631) protruding radially outward, and the backrest crossbeam (11) is provided with a limiting groove (11a) along the axial direction of the screw rod (62), and the guide structure (631) is slidably mounted in the limiting groove (11a).

7. The car seat with hidden armrests according to claim 6, characterized in that: The inner end side wall of the transmission rod (3) is provided with an arc-shaped groove (3a) along its circumference, and the guide structure (631) is also slidably mounted in the arc-shaped groove (3a).

8. The car seat with hidden armrests according to claim 4, characterized in that: The second power assembly (7) comprises a second motor (64) fixedly mounted on the backrest side plate (12); the output shaft of the second motor (64) is connected to a gear (65); a toothed portion (2c) meshing with the gear (65) is disposed on the outer side of the turntable (2); and the turntable (2) is connected to the gear (65) in a power manner.

9. The car seat with hidden armrests according to claim 2, characterized in that: The inner end of the anti-rotation strip (51) is provided with a first limiting portion (51a) protruding outwards, and the outer end side wall of the transmission rod (3) is provided with a second limiting portion (3b) protruding outwards.

10. The car seat with hidden armrests according to claim 5, characterized in that: An armrest mechanism (B) is provided on each of the left and right sides of the mounting base (1); the screw rods (62) of the two armrest mechanisms (B) are driven by a first motor (61); the first motor (61) connects the two screw rods (62) via a synchronization rod (66); and the two screw rods (62) rotate in opposite directions.

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