CN212447225U - Back row seat framework - Google Patents

Abstract

The utility model provides a back row seat skeleton belongs to auto-parts technical field. This back row seat skeleton passes through drive arrangement control first sprocket or second sprocket and rotates to slide in the first spout on the first connecting plate through the first bracing piece of chain drive, and the second bracing piece slides in the second spout on the second connecting plate, and then drives the axis direction of head rest on first bracing piece and connection head on the first bracing piece and remove for the cushion skeleton. The headrest both can be close to the cushion skeleton on the axis direction of first bracing piece, also can keep away from the cushion skeleton on the axis direction of first bracing piece to satisfy the demand of taking of the passenger of different heights, increased the control range of the position of headrest, improved the practicality of back row seat skeleton.

Description

Back row seat framework

Technical Field

The disclosure relates to the technical field of auto parts, in particular to a rear-row seat framework.

Background

Along with the requirement of the passenger on the automobile seat is higher and higher, the passenger hopes to adjust the position of the headrest according to the height aiming at the headrest on the rear seat of the automobile so as to improve the riding comfort level.

The back row seat frame is an important support part for supporting passengers in the back row seat of the automobile, in the related art, the back row seat frame generally comprises a backrest frame for supporting the back of the passengers and a cushion frame for the passengers to sit, a headrest is generally installed at the top of the backrest frame through a telescopic adjusting rod, the passengers pull the headrest upwards through hands, and the position of the headrest relative to the backrest frame is adjusted to raise the height of the headrest of the back row seat.

The back row seat frame in the correlation technique has a small adjustment range for the position of the headrest and low practicability.

SUMMERY OF THE UTILITY MODEL

The embodiment of the disclosure provides a back row seat frame, which can increase the adjusting range of the position of a headrest and improve the practicability of the back row seat frame. The technical scheme is as follows:

the embodiment of the present disclosure provides a back row seat frame, and this back row seat frame includes:

a backrest framework, a cushion framework and a transmission mechanism,

the backrest framework comprises a first supporting rod, a second supporting rod, a first connecting plate, a second connecting plate and a headrest, the first supporting rod and the second supporting rod are parallel, two ends of the first connecting rod are respectively connected with the first supporting rod and the second supporting rod, the first connecting plate and the second connecting plate are connected with the cushion framework, the first connecting plate is provided with a first chute, the second connecting plate is provided with a second chute, the first supporting rod is slidably arranged in the first chute, the second supporting rod is slidably arranged in the second chute, the headrest is connected with the first connecting rod,

the transmission mechanism comprises a first chain wheel, a second chain wheel, a chain and a driving device, the first chain wheel and the second chain wheel are arranged on one of the first connecting plate and the second connecting plate at intervals along the axis direction of the first supporting rod, the rotating shaft direction of the first chain wheel and the rotating shaft direction of the second chain wheel are perpendicular to the first supporting rod, the chain is wound on the first chain wheel and the second chain wheel, at least one of the first supporting rod and the second supporting rod is fixedly connected with the chain, and the driving device is in transmission connection with any one of the first chain wheel and the second chain wheel.

Optionally, the notch of the first runner is disposed opposite the notch of the second runner.

Optionally, the back row seat frame further comprises a second connecting rod, and two ends of the second connecting rod are connected with the first connecting plate and the second connecting plate respectively.

Optionally, the rear seat frame further includes at least one first elastic member, one end of the at least one first elastic member is connected to the first connecting rod, and the other end of the at least one first elastic member is connected to the second connecting rod.

Optionally, the rear seat frame further includes at least one second elastic member, one end of the at least one second elastic member is connected to the first support rod, and the other end of the at least one second elastic member is connected to the second support rod.

Optionally, the second resilient member is a serpentine spring.

Optionally, the first support bar and the second support bar have pulleys thereon.

Optionally, the back row seat frame further comprises a plurality of support legs, the plurality of support legs are located on the other side face of the seat cushion frame relative to the backrest frame, and the plurality of support legs are connected with the seat cushion frame.

Optionally, the rear seat frame further comprises a slide rail on which the plurality of support legs are slidably mounted.

Optionally, the backrest frame and the seat cushion frame are both steel frames.

The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:

the first chain wheel or the second chain wheel is controlled to rotate through the driving device, the first supporting rod is driven to slide in the first sliding groove in the first connecting plate through the chain, the second supporting rod slides in the second sliding groove in the second connecting plate, and then the first connecting rod and a headrest connected to the first connecting rod are driven to move relative to the cushion framework in the axis direction of the first supporting rod. The headrest both can be close to the cushion skeleton on the axis direction of first bracing piece, also can keep away from the cushion skeleton on the axis direction of first bracing piece to satisfy the demand of taking of the passenger of different heights, increased the control range of the position of headrest, improved the practicality of back row seat skeleton.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a schematic structural view of a rear seat frame provided in an embodiment of the present disclosure;

fig. 2 is a partial schematic structural view of a backrest frame provided in an embodiment of the present disclosure;

fig. 3 is a schematic view illustrating an assembly structure of a second support rod and a second sliding groove according to an embodiment of the disclosure;

fig. 4 is a schematic structural view of another rear seat frame provided in the embodiments of the present disclosure.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

In the related art, the rear seat frame generally includes a backrest frame for supporting the back of a passenger and a seat cushion frame for seating the passenger, and the headrest is generally installed on the top of the backrest frame by a telescopic adjustment lever, and the passenger manually pulls the headrest upward to adjust the position of the headrest with respect to the backrest frame to raise the height of the rear seat headrest. However, in actual use, the seat manufactured by using the rear seat frame in the related art is based on the backrest requirement of most people, and the headrest is generally adapted to the passenger with a height of about 160cm when the headrest is located at the lowest position, so that the proper safety position of the headrest may not be found for the part of the passenger with the height lower than 160cm, and the comfortable seating experience may not be obtained for the part of the passenger with the height lower than 150cm because the head of the passenger does not contact the headrest. The back row seat frame in the correlation technique has a small adjustment range for the position of the headrest and low practicability.

Fig. 1 is a schematic structural diagram of a rear seat frame according to an embodiment of the present disclosure. As shown in fig. 1, the present inventors have provided, by practice, a rear seat frame including a back frame 100, a seat cushion frame 200, and a transmission mechanism 300. The backrest frame 100 includes a first support rod 110, a second support rod 120, a first connection rod 130, a first connection plate 140, a second connection plate 150 and a headrest 160, the first support rod 110 and the second support rod 120 are parallel, two ends of the first connection rod 130 are respectively connected with the first support rod 110 and the second support rod 120, the first connection plate 140 and the second connection plate 150 are connected with the cushion frame 200, the first connection plate 140 is provided with a first sliding groove 141, the second connection plate 150 is provided with a second sliding groove 151, the first support rod 110 is slidably installed in the first sliding groove 141, the second support rod 120 is slidably installed in the second sliding groove 151, and the headrest 160 is connected with the first connection rod 130.

The transmission mechanism 300 includes a first sprocket 310, a second sprocket 320, a chain 330 and a driving device 340, wherein the first sprocket 310 and the second sprocket 320 are spaced apart from each other along the axial direction of the first support bar 110 and are disposed on one of the first connecting plate 140 and the second connecting plate 150, the rotational axes of the first sprocket 310 and the second sprocket 320 are perpendicular to the first support bar 110, the chain 330 is wound around the first sprocket 310 and the second sprocket 320, and at least one of the first support bar 110 and the second support bar 120 and the chain 330 are fixedly connected with the driving device 340 in a transmission connection with any one of the first sprocket 310 and the second sprocket 320.

In the disclosed embodiment, the rear seat frame is composed of a backrest frame 100 and a seat cushion frame 200, wherein the backrest frame 100 is used for supporting the back of a passenger, and the seat cushion frame 200 is used for supporting the passenger when the passenger sits on the rear seat, avoiding the seat from collapsing. The first connecting plate 140 and the second connecting plate 150 are connected to the seat cushion frame 200, two ends of the first connecting rod 130 are respectively connected to the first supporting rod 110 and the second supporting rod 120 which are parallel to each other, the first supporting rod 110 is slidably mounted in the first sliding groove 141 of the first connecting plate 140, and the second supporting rod 120 is slidably mounted in the second sliding groove 151 of the second connecting plate 150. That is, the first connecting rod 130 and the headrest 160 connected to the first connecting rod 130 may slide along the axial direction of the first and second support rods 110 and 120 following the first and second support rods 110 and 120, thereby adjusting the position of the headrest 160 with respect to the seat cushion frame 200.

And a first sprocket 310 and a second sprocket 320 are provided at intervals in the axial direction of the first support bar 110 on one of the first connection plate 140 and the second connection plate 150, and at least one of the first support bar 110 and the second support bar 120 is fixedly connected to a chain 330 wound around the first sprocket 310 and the second sprocket 320. When the position of the headrest 160 relative to the seat cushion frame 200 needs to be adjusted, the driver can control the first sprocket 310 or the second sprocket 320 to rotate by using the driving device 340, and drive the first support rod 110 to slide in the first sliding groove 141 and the second support rod 120 to slide in the second sliding groove 151 through the chain 330, so as to drive the headrest 160 to slide relative to the seat cushion frame 200. When the height of the headrest 160 needs to be reduced to accommodate a short passenger, the headrest 160 can be controlled by the transmission mechanism 300 to approach the cushion frame 200 in the axial direction of the first support rod 110; when it is necessary to raise the height of the headrest 160 to accommodate a taller passenger, the headrest 160 can be controlled by the actuator 300 in the axial direction of the first support rod 110 away from the seat cushion frame 200.

The back row seat skeleton that this disclosed embodiment provided rotates through first sprocket or second sprocket of drive arrangement control to slide in the first spout on the first connecting plate through the first bracing piece of chain drive, and the second bracing piece slides in the second spout on the second connecting plate, and then drives the axis direction of head pillow on first bracing piece and connection at the first bracing piece and remove for the cushion skeleton. The headrest both can be close to the cushion skeleton on the axis direction of first bracing piece, also can keep away from the cushion skeleton on the axis direction of first bracing piece to satisfy the demand of taking of the passenger of different heights, increased the control range of the position of headrest, improved the practicality of back row seat skeleton.

For example, the driving device 340 may be a hydraulic motor, an output shaft of the hydraulic motor may be connected to a rotating shaft of the first sprocket 310 or the second sprocket 320, and in other possible implementations, the driving device 340 may also be an electric motor as long as the first sprocket 310 and the second sprocket 320 can be driven to rotate, which is not limited in the embodiment of the present disclosure. The disclosed embodiment is illustrated with the drive arrangement in driving connection with the first sprocket 310.

Fig. 2 is a partial structural top view of a backrest frame provided in an embodiment of the present disclosure. As shown in fig. 1 and 2, the notch of the first slide groove 141 is disposed opposite to the notch of the second slide groove 151. For example, in the embodiment of the present disclosure, the first connecting plate 140 includes a first plate 142 and two first limiting protrusions 143 disposed on the first plate 142, and the two first limiting protrusions 143 and a plate surface of the first plate 142 define a first sliding groove 141. And the second connecting plate 150 includes a second plate body 152 and two second limiting protrusions 153 arranged on the second plate body 152, and the two second limiting protrusions 153 and the plate surface of the second plate body 152 define a second sliding groove 151. By arranging the notches of the first sliding grooves 141 and the second sliding grooves 151 in opposite directions, that is, by arranging the two first limiting protrusions 143 protruding from the first plate 142 toward the second connecting plate 150 and the two second limiting protrusions 153 protruding from the second plate 152 toward the first connecting plate 140, when the first supporting rod 110 slides in the first sliding groove 141 and the second supporting rod 120 slides in the second sliding groove 151, the two first limiting protrusions 143 can limit the first supporting rod 110 in a direction parallel to the first plate 142, thereby ensuring that the first supporting rod 110 can only slide in the first sliding groove 141 along the axial direction. The two second limiting protrusions 153 can limit the second supporting rod 120 in a direction parallel to the second plate 152, so that the second supporting rod 120 can only slide in the second sliding groove 151 along the axial direction. The first support rod 110 and the second support rod 120 are prevented from shaking due to vibration in the driving process of the vehicle or falling off from the first sliding groove 141 and the second sliding groove 151, and the assembly stability of the rear seat frame is improved.

Optionally, the first support bar 110 and the second support bar 120 have pulleys 180 thereon. Since the backrest frame 100 is usually a metal structure, the outer surfaces of the first and second support bars 110 and 120 and the groove walls of the first and second sliding grooves 141 and 151 are easily worn due to large friction, and the service life of the backrest frame is shortened. Fig. 3 is a schematic view of an assembly structure of a second support rod and a second sliding groove according to an embodiment of the disclosure. As shown in fig. 3, exemplarily, in the embodiment of the present disclosure, taking the second support rod 120 and the second sliding groove 151 as an example, by providing a pulley 180 on the second support rod 120, the second support rod 120 can slide in the second sliding groove 151 through the pulley 180. Because the rolling friction force is far less than the sliding friction, the abrasion can be effectively avoided, and the service life of the back-row seat framework is further prolonged.

It should be noted that the assembly relationship between the pulley 180 and the first sliding groove 141 of the first support bar 110 is the same as that between the second support bar 120 and the second sliding groove 151, and the details of the embodiment of the disclosure are not repeated.

Optionally, the rear seat frame further includes a second connecting rod 170, and two ends of the second connecting rod 170 are respectively connected to the first connecting plate 140 and the second connecting plate 150. During the driving of the automobile, the sitting posture of the passenger sitting on the rear seat may be changed frequently due to the vibration of the automobile body, and the magnitude of the force applied to the first support bar 110 and the second support bar 120 by the back of the passenger may be changed. After the backrest frame 100 is used for a long time, due to uneven stress on the first support rod 110 and the second support rod 120, the first connection plate 140 connected to the first support rod 110 and the second connection plate 150 connected to the second support rod 120 may be deformed due to uneven stress, resulting in deformation or even breakage of the whole backrest frame 100. Exemplarily, in the embodiment of the present disclosure, by connecting one second connecting rod 170 between the first connecting plate 140 and the second connecting plate 150, the second connecting rod 170 may support the first connecting plate 140 and the second connecting plate 150, improve the connection strength and stability between the first connecting plate 140 and the second connecting plate 150, prevent the first connecting plate 140 and the second connecting plate 150 from deforming or relatively displacing due to uneven stress, and improve the service life of the rear seat frame.

Optionally, the rear seat frame further includes at least one first elastic member 400, one end of the at least one first elastic member 400 is connected to the first connecting rod 130, and the other end of the at least one first elastic member 400 is connected to the second connecting rod 170. The driving device 340 such as a hydraulic motor or an electric motor provides power for the transmission mechanism 300 to drive the first connecting rod 130 and the headrest 160 to move relative to the seat cushion frame 200, which consumes high energy. Exemplarily, in the embodiment of the present disclosure, by connecting at least one first elastic member 400, for example, a spring, between the first connecting rod 130 and the second connecting rod 170. When the headrest 160 is located at the initial position, the spring is not stretched and contracted, when the headrest 160 is adjusted to approach the cushion frame 200, the spring is contracted, and when the headrest needs to be adjusted to be away from the cushion frame 200 and return to the initial position, the spring can provide elastic force for the movement of the headrest 160; the spring is stretched when the headrest 160 is adjusted away from the seat cushion frame 200, and can also provide tension for movement of the headrest 160 when it is desired to adjust the headrest 160 closer to the seat cushion frame 200 and back to the initial position. Thereby reducing the power consumption of the driving device 340 and reducing the adjustment cost of the rear seat frame.

Fig. 4 is a schematic structural view of another rear seat frame provided in the embodiments of the present disclosure. As shown in fig. 4, the rear seat frame further includes at least one second elastic member 500, one end of the at least one second elastic member 500 is connected to the first support bar 110, and the other end of the at least one second elastic member 500 is connected to the second support bar 120. In the driving process of the automobile, due to factors such as uneven road surface and the like, the automobile body inevitably vibrates and jolts, and the riding experience of passengers is influenced. Illustratively, in the embodiment of the present disclosure, at least one second elastic member 500, such as a spring, is connected to the first support bar 110 and the second support bar 120, so that the elasticity of the spring is used to buffer and offset the stress transmitted from the back of the passenger, thereby achieving the purpose of vibration reduction and improving the riding experience of the passenger.

Optionally, the second elastic member 500 is a serpentine spring. When the vehicle body shakes and jolts violently, the pressure of the back of the passenger on the second elastic member 500 for supporting is large, and a common spring is adopted as the second elastic member 500 for damping vibration, so that the deformation is easily caused by small load, and the service life is short. Illustratively, in the embodiment of the present disclosure, compared with a common spring, the serpentine spring has a higher elastic limit and a higher fatigue limit, better damping performance, and a larger range of the variable load, and the serpentine spring is used as the second elastic member 500, which can further improve the damping performance and the service life of the backrest frame 100. Simultaneously, serpentine spring takes place the produced noise of in-process that deforms at the atress for a short time, can further improve passenger's the experience of taking.

It should be noted that, for clarity of exemplary illustration, the rear seat frame in fig. 1 includes only the first elastic member 400, and the rear seat frame in fig. 3 includes only the second elastic member 500. In other possible implementations, the rear seat frame may also include the first elastic element 400 and the second elastic element 500 at the same time, so as to improve the passenger's sitting experience while reducing the adjustment cost of the rear seat frame, which is not limited by the embodiment of the present disclosure.

Optionally, the rear seat frame further includes a plurality of support legs 210, the plurality of support legs 210 are located at the other side of the seat cushion frame 200 with respect to the back frame 100, and the plurality of support legs 210 are connected to the seat cushion frame 200. Exemplarily, in the embodiment of the present disclosure, by providing the plurality of support legs 210 on the seat cushion frame 200, the seat cushion frame 200 may be connected to the vehicle body through the plurality of support legs 210 having corresponding heights, so as to facilitate the passenger to sit on the rear seat, and further improve the sitting experience of the passenger.

It should be noted that the lengths of the plurality of support legs 210 can be adaptively changed according to the size and height of the inner cavity of the vehicle body, as long as the normal seating and the seating comfort of the passengers are ensured, which is not limited in the present disclosure.

Optionally, the rear seat frame further comprises a slide rail 600, and the plurality of support legs 210 are slidably mounted on the slide rail 600. Illustratively, in the disclosed embodiment, by slidably mounting the plurality of support legs 210 in the slide rails 600, the passenger can push the row seat framework to move on the slide rails 600 as required, and adjust the position of the rear seat in the inner cavity of the vehicle body to obtain the best seating experience. The practicability of the back-row seat framework is further improved.

It should be noted that the length and the extending direction of the slide rail 600 may be adaptively changed according to the size of the inner cavity of the vehicle body, as long as the position of the rear seat frame is adjustable, which is not limited in the embodiment of the present disclosure.

Alternatively, the back frame 100 and the seat cushion frame 200 are both steel frames. The steel has good toughness and heat resistance, uniform material quality and high mechanical strength. By adopting the backrest framework 100 and the cushion framework 200 which are made of steel, the rear seat framework can be prevented from deforming and breaking due to the vibration of the automobile body when the automobile runs, and the service life of the rear seat framework is effectively prolonged. Meanwhile, the steel has good plasticity, convenient processing and short manufacturing period, and can reduce the processing cost.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object being described changes.

The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.

Claims (10)

1. A rear seat frame, comprising: a backrest framework (100), a cushion framework (200) and a transmission mechanism (300),

the backrest frame (100) comprises a first supporting rod (110), a second supporting rod (120), a first connecting rod (130), a first connecting plate (140), a second connecting plate (150) and a headrest (160), the first supporting rod (110) and the second supporting rod (120) are parallel, two ends of the first connecting rod (130) are respectively connected with the first supporting rod (110) and the second supporting rod (120), the first connecting plate (140) and the second connecting plate (150) are connected with the cushion frame (200), the first connecting plate (140) is provided with a first sliding groove (141), the second connecting plate (150) is provided with a second sliding groove (151), the first supporting rod (110) is slidably installed in the first sliding groove (141), and the second supporting rod (120) is slidably installed in the second sliding groove (151), the headrest (160) is connected with the first connecting rod (130),

the transmission mechanism (300) comprises a first chain wheel (310), a second chain wheel (320), a chain (330) and a driving device (340), the first sprocket (310) and the second sprocket (320) are disposed on one of the first link plate (140) and the second link plate (150) at an interval in an axial direction of the first support bar (110), the direction of the rotating shaft of the first chain wheel (310) and the second chain wheel (320) is vertical to the first supporting rod (110), the chain (330) is wound on the first chain wheel (310) and the second chain wheel (320), at least one of the first support bar (110) and the second support bar (120) is fixedly connected with the chain (330), the driving device (340) is in transmission connection with any one of the first chain wheel (310) and the second chain wheel (320).

2. The rear seat frame according to claim 1, wherein the notch of the first slide groove (141) is disposed opposite to the notch of the second slide groove (151).

3. The rear seat frame according to claim 1, further comprising a second connecting rod (170), wherein both ends of the second connecting rod (170) are connected to the first connecting plate (140) and the second connecting plate (150), respectively.

4. The rear seat frame according to claim 3, further comprising at least one first elastic member (400), wherein one end of the at least one first elastic member (400) is connected to the first connecting rod (130), and the other end of the at least one first elastic member (400) is connected to the second connecting rod (170).

5. The rear seat frame according to any one of claims 1 to 4, further comprising at least one second elastic member (500), wherein one end of the at least one second elastic member (500) is connected to the first support bar (110), and the other end of the at least one second elastic member (500) is connected to the second support bar (120).

6. The rear seat frame of claim 5, wherein the second resilient member (500) is a serpentine spring.

7. The rear seat frame according to any one of claims 1 to 4, wherein the first support bar (110) and the second support bar (120) have pulleys (180) thereon.

8. The rear seat frame according to any one of claims 1 to 4, further comprising a plurality of support legs (210), the plurality of support legs (210) being located on the other side of the seat cushion frame (200) with respect to the back frame (100), the plurality of support legs (210) being connected to the seat cushion frame (200).

9. The rear seat frame of claim 8, further comprising a slide rail (600), the plurality of support legs (210) slidably mounted on the slide rail (600).

10. The rear seat frame according to any one of claims 1 to 4, wherein the back frame (100) and the seat frame (200) are both steel frames.

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