CN212473194U - Back row seat frame with height adjusting function - Google Patents

Abstract

The utility model provides a back row seat skeleton with altitude mixture control function belongs to auto-parts technical field. This back row seat skeleton passes through drive arrangement control first sprocket or the second sprocket rotates to slide in the first spout on first connecting plate through the first slide bar of chain drive, and the second slide bar slides in the second spout on the second connecting plate, and then drive first crossbeam and connect the headrest on first crossbeam and remove for the cushion skeleton in the axis direction of first slide bar, and carry out spacing fixed through the limiting plate to the position of headrest after the position adjustment of headrest targets in place. The headrest both can be close to the cushion skeleton on the axis direction of first slide bar, also can keep away from the cushion skeleton on the axis direction of first slide bar 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 frame with height adjusting function

Technical Field

The disclosure relates to the technical field of auto parts, in particular to a rear seat framework with a height adjusting function.

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 skeleton with height adjusting function, can increase the control range of the position of headrest, improves back row seat skeleton's practicality. The technical scheme is as follows:

the embodiment of the present disclosure provides a back row seat skeleton with altitude mixture control function, this back row seat skeleton includes:

a backrest framework, a cushion framework, at least one limit plate and a chain transmission component,

the backrest framework comprises a first slide bar, a second slide bar, a first beam, a first connecting plate, a second connecting plate and a headrest, the first slide bar and the second slide bar are parallel, two ends of the first beam are respectively connected with the first slide bar and the second slide bar, 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 slide bar is slidably arranged in the first chute, the second slide bar is slidably arranged in the second chute, the headrest is connected with the first beam,

at least one limiting plate is hinged on at least one of the first connecting plate and the second connecting plate, the hinge axis of the at least one limiting plate is parallel to the axis direction of the first sliding rod and the second sliding rod, the limiting plate is provided with a limiting bulge, the first sliding rod is provided with a first limiting hole matched with the limiting bulge, the second sliding rod is provided with a second limiting hole matched with the limiting bulge,

the chain transmission assembly 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 sliding rod, the rotating shaft directions of the first chain wheel and the second chain wheel are perpendicular to the first sliding rod, the chain is wound on the first chain wheel and the second chain wheel, at least one of the first sliding rod and the second sliding 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 first slide bar is provided with a plurality of first limiting holes, the plurality of limiting holes are uniformly arranged at intervals along the axial direction of the first slide bar, the second slide bar is provided with a plurality of second limiting holes, and the plurality of second limiting holes are uniformly arranged at intervals along the axial direction of the second slide bar.

Optionally, the back-row seat frame further comprises an elastic cushion plate, the elastic cushion plate and the limiting protrusion are located on the same side of the limiting plate, and the elastic cushion plate is fixedly connected with the limiting plate.

Optionally, the resilient pad is a rubber pad.

Optionally, the first beam has a third sliding slot, the length direction of the third sliding slot is parallel to the axial direction of the first beam, and the headrest is slidably mounted in the third sliding slot.

Optionally, the rear seat frame further includes a second cross beam, and two ends of the second cross beam are connected with the first connecting plate and the second connecting plate respectively.

Optionally, the first and second slide bars 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 utility model provides a back row seat skeleton, control first sprocket or second sprocket through drive arrangement and rotate, and slide in the first spout on first connecting plate through the first slide bar of chain drive, and the second slide bar slides in the second spout on the second connecting plate, and then drive first crossbeam and the headrest of connection on first crossbeam and remove for the cushion skeleton in the axis direction of first slide bar, after the position adjustment of headrest targets in place, through rotatory limiting plate who articulates on first slide bar or second slide bar, block spacing arch on the limiting plate in the first spacing hole of first slide bar or the second spacing hole of second slide bar, realize the spacing fixed to the headrest position. The headrest both can be close to the cushion skeleton on the axis direction of first slide bar, also can keep away from the cushion skeleton on the axis direction of first slide bar 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 diagram of a rear seat frame with a height adjusting function according to 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 of an assembly structure of a second sliding rod and a second sliding chute provided in the embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of another rear seat frame with a height adjusting function provided by the embodiment of the 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 with a height adjusting function according to an embodiment of the present disclosure. As shown in figure 1 of the drawings, in which,

through practice, the present inventors provide a rear seat frame having a height adjusting function, which includes a backrest frame 100, a seat cushion frame 200, at least one limiting plate 300, and a chain transmission assembly 400. The backrest frame 100 includes a first slide bar 110, a second slide bar 120, a first beam 130, a first connecting plate 140, a second connecting plate 150 and a headrest 160, the first slide bar 110 and the second slide bar 120 are parallel, two ends of the first beam 130 are respectively connected with the first slide bar 110 and the second slide bar 120, the first connecting plate 140 and the second connecting plate 150 are connected with the seat 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 slide bar 110 is slidably mounted in the first sliding groove 141, the second slide bar 120 is slidably mounted in the second sliding groove 151, and the headrest 160 is connected with the first beam 130.

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, at least one position-limiting plate 300 is hinged to at least one of the first connecting plate 140 and the second connecting plate 150, a hinge axis of the at least one position-limiting plate 300 is parallel to an axial direction of the first slide bar 110 and the second slide bar 120, the position-limiting plate 300 is provided with a position-limiting protrusion 310, the first slide bar 110 is provided with a first position-limiting hole 111 (see fig. 2 and 3) matched with the position-limiting protrusion 310, and the second slide bar 120 is provided with a second position-limiting hole 121 matched with the position-limiting protrusion 310.

The chain transmission assembly 400 comprises a first chain wheel 410, a second chain wheel 420, a chain 430 and a driving device 440, wherein the first chain wheel 410 and the second chain wheel 420 are arranged on one of the first connecting plate 140 and the second connecting plate 150 at intervals along the axial direction of the first slide bar 110, the rotating shaft direction of the first chain wheel 410 and the second chain wheel 420 is perpendicular to the first slide bar 110, the chain 430 is wound on the first chain wheel 410 and the second chain wheel 420, and at least one of the first slide bar 110 and the second slide bar 120 and the chain 430 are fixedly connected with the driving device 440 and any one of the first chain wheel 410 and the second chain wheel 420 in a transmission way.

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 beam 130 are respectively connected to the first slide bar 110 and the second slide bar 120 which are parallel to each other, the first slide bar 110 is slidably mounted in the first slide slot 141 of the first connecting plate 140, and the second slide bar 120 is slidably mounted in the second slide slot 151 of the second connecting plate 150. That is, the first cross member 130 and the headrest 160 connected to the first cross member 130 can slide along the axial direction of the first and second slide bars 110 and 120 following the first and second slide bars 110 and 120, thereby adjusting the position of the headrest 160 with respect to the seat cushion frame 200.

And at least one of the first and second slide bars 110 and 120 is fixedly connected to a chain 430 wound around the first and second sprockets 410 and 420 by disposing the first and second sprockets 410 and 420 on one of the first and second connection plates 140 and 150 at intervals in the axial direction of the first slide bar 110. When the position of the headrest 160 relative to the seat cushion frame 200 needs to be adjusted, the driver can control the first chain wheel 410 or the second chain wheel 420 to rotate by using the driving device 440, and drive the first slide bar 110 to slide in the first slide groove 141 and the second slide bar 120 to slide in the second slide groove 151 through the chain 430, 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 adapt to a shorter passenger, the headrest 160 can be controlled by the chain transmission assembly 400 to approach the cushion frame 200 in the axial direction of the first sliding rod 110; when the height of the headrest 160 needs to be raised to accommodate a taller passenger, the headrest 160 can be controlled by the chain transmission assembly 400 to move away from the seat cushion frame 200 in the axial direction of the first slide bar 110.

After the position of the headrest 160 is adjusted to the right position by the chain transmission assembly 400, the position limiting plate 300 hinged on the first connecting plate 140 or the second connecting plate 150 is adjusted to rotate around the axial direction of the first slide bar 110 or the second slide bar 120 until the limiting protrusion 310 on the position limiting plate 300 is clamped into the first limiting hole 111 of the first slide bar 110 or the limiting protrusion 310 on the position limiting plate 300 is clamped into the second limiting hole 121 of the second slide bar 120, so that the first slide bar 110, the second slide bar 120, the first beam 130 and the headrest 160 are limited and fixed in the axial direction of the first slide bar 110.

The utility model provides a back row seat skeleton, control first sprocket or second sprocket through drive arrangement and rotate, and slide in the first spout on first connecting plate through the first slide bar of chain drive, and the second slide bar slides in the second spout on the second connecting plate, and then drive first crossbeam and the headrest of connection on first crossbeam and remove for the cushion skeleton in the axis direction of first slide bar, after the position adjustment of headrest targets in place, through rotatory limiting plate who articulates on first slide bar or second slide bar, block spacing arch on the limiting plate in the first spacing hole of first slide bar or the second spacing hole of second slide bar, realize the spacing fixed to the headrest position. The headrest both can be close to the cushion skeleton on the axis direction of first slide bar, also can keep away from the cushion skeleton on the axis direction of first slide bar 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 limiting plate 300 may be hinged to the first connecting plate 140 or hinged to the second connecting plate 150, and in other possible implementation manners, one or more limiting plates 300 may be disposed on both the first connecting plate 140 and the second connecting plate 150, so as to further improve the stability of the limiting fixation of the headrest 160, which is not limited in the embodiment of the present disclosure. The embodiment of the present disclosure is exemplified by hinging one stopper plate 300 on the second connection plate 150.

For example, the driving device 440 may be a hydraulic motor, an output shaft of the hydraulic motor may be connected to a rotating shaft of the first sprocket 410 or the second sprocket 420, and in other possible implementations, the driving device 440 may also be an electric motor as long as the first sprocket 410 and the second sprocket 420 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 410.

Optionally, the first slide bar 110 has a plurality of first position-limiting holes 111, the plurality of position-limiting holes 111 are uniformly spaced along the axial direction of the first slide bar 110, the second slide bar 120 has a plurality of second position-limiting holes 121, and the plurality of second position-limiting holes 121 are uniformly spaced along the axial direction of the second slide bar 120. Only one first limiting hole 111 or one second limiting hole 121 is adopted to correspond to the limiting protrusion 310 on the limiting plate 300, so that the headrest 160 is limited and fixed, and the adjustment range of the position of the headrest 160 is limited greatly. Exemplarily, in the embodiment of the present disclosure, by arranging a plurality of first limiting holes 111 on the first slide bar 110 at regular intervals and a plurality of second limiting holes 121 on the second slide bar 120 at intervals, different first limiting holes 111 or second limiting holes 121 may be selected to correspond to the limiting protrusions 310 on the limiting plate 300 according to different positions of the headrest 160 relative to the seat cushion frame 200, and the limiting protrusions 310 are clamped into the different first limiting holes 111 and second limiting holes 121, so that the limiting fixation of the headrest 160 at different positions is realized, the adjustment range of the position of the headrest 160 is improved, and the practicability of the rear seat cushion frame is further improved.

Optionally, the rear seat frame further includes an elastic pad 320, the elastic pad 320 and the limiting protrusion 310 are located on the same side of the limiting plate 300, and the elastic pad 320 is fixedly connected to the limiting plate 300. In the process that the limiting protrusion 310 on the limiting plate 300 is matched with the first limiting hole 111 on the first sliding rod 110 or the second limiting hole 121 on the second sliding rod 120 for a long time, due to vehicle vibration and other reasons, the plate surface of the limiting plate 300 may rub against the outer surface of the first sliding rod 110 or the second sliding rod 120 to cause abrasion. Exemplarily, in the embodiment of the present disclosure, by arranging an elastic pad 320 on the plate surface where the limiting protrusion 310 is located, when the limiting protrusion 310 is snapped into the first limiting hole 111 or the second limiting hole 121, the elastic pad 320 is located between the first sliding bar 110 or the second sliding bar 120 and the plate surface of the limiting plate 300, so as to avoid abrasion caused by direct contact, and improve the service life of the rear seat frame.

Optionally, the resilient pad is a rubber pad. The rubber material has excellent elasticity and insulativity, and the static friction between the rubber material and the metal material is far greater than that of the metal material when the metal material is in direct contact with the rubber material, so that the relative sliding between the limiting plate 300 and the first sliding rod 110 or the second sliding rod 120 caused by vibration can be effectively avoided, and the assembly stability of the rear-row seat framework is improved.

Alternatively, the notch of the first slide groove 141 is disposed opposite to the notch of the second slide groove 151. Illustratively, in the embodiment of the present disclosure, the first connecting plate 140 includes a first plate 142 and two first side plates 143 disposed on the first plate 142, and the two first side plates 143 and the plate surfaces of the first plate 142 define a first sliding groove 141. And the second connection plate 150 includes a second plate body 152 and two second side plates 153 arranged on the second plate body 152, and the two second side plates 153 and the plate surface of the second plate body 152 define a second sliding slot 151. By arranging the notches of the first sliding groove 141 and the second sliding groove 151 in an opposite manner, that is, the two first side plates 143 are arranged by the first plate 142 to protrude toward the second connecting plate 150, the two second side plates 153 are arranged by the second plate 152 to protrude toward the first connecting plate 140, when the first slide bar 110 slides in the first sliding groove 141, and the second slide bar 120 slides in the second sliding groove 151, the two first side plates 143 can limit the position of the first slide bar 110 in a direction parallel to the first plate 142, so as to ensure that the first slide bar 110 can only slide in the first sliding groove 141 along the axial direction. The two second side plates 153 can limit the position of the second sliding rod 120 in a direction parallel to the second plate body 152, so as to ensure that the second sliding rod 120 can only slide in the second sliding groove 151 along the axial direction. The first sliding rod 110 and the second sliding 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 slide bar 110 and the second slide bar 120 have a pulley 180 thereon. Since the backrest frame 100 is usually a metal structure, the outer surfaces of the first slide bar 110 and the second slide bar 120, and the groove walls of the first slide bar 141 and the second slide bar 151 are easily worn due to large friction, and the service life of the backrest frame is reduced. Fig. 3 is a schematic view of an assembly structure of a second sliding rod and a second sliding chute provided in the embodiment of the present disclosure. As shown in fig. 3, exemplarily, in the embodiment of the present disclosure, taking the second slide bar 120 and the second sliding chute 151 as an example, by providing a pulley 180 on the second slide bar 120, the second slide bar 120 can slide in the second sliding chute 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 on the first sliding bar 110 and the first sliding groove 141 is the same as that between the second sliding 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 cross member 170, and two ends of the second cross member 170 are respectively connected to the first connecting plate 140 and the second connecting plate 150. During the running of the automobile, due to the vibration of the automobile body, the sitting posture of the passenger sitting on the back seat is changed frequently, and the force of the back of the passenger acting on the first sliding bar 110 and the second sliding bar 120 is also changed. After the backrest frame 100 is used for a long time, due to uneven stress on the first slide bar 110 and the second slide bar 120, the first connecting plate 140 connected to the first slide bar 110 and the second connecting plate 150 connected to the second slide bar 120 may be deformed due to uneven stress, so that the whole backrest frame 100 may be deformed or even broken and damaged. Exemplarily, in the embodiment of the present disclosure, by connecting one second beam 170 between the first connecting plate 140 and the second connecting plate 150, the second beam 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 500, one end of the at least one first elastic member 500 is connected to the first cross member 130, and the other end of the at least one first elastic member 500 is connected to the second cross member 170. The driving device 440 such as a hydraulic motor or an electric motor provides power for the chain transmission assembly 400 to drive the first cross member 130 and the headrest 160 to move relative to the seat cushion frame 200, which is high in energy consumption. Illustratively, in the disclosed embodiment, at least one first elastic member 500, such as a spring, is connected between the first beam 130 and the second beam 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 440 and reducing the adjustment cost of the rear seat frame.

Fig. 4 is a schematic structural diagram of another rear seat frame with a height adjusting function provided by the embodiment of the disclosure. As shown in fig. 4, the rear seat frame further includes at least one second elastic member 600, one end of the at least one second elastic member 600 is connected with the first slide bar 110, and the other end of the at least one second elastic member 600 is connected with the second slide 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 600, such as a spring, is connected to the first slide bar 110 and the second slide bar 120, so that the elasticity of the spring is utilized 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 600 is a serpentine spring. When the vehicle body is severely vibrated and bumped, the pressure generated by the back of the passenger on the second elastic member 600 for supporting is large, and a common spring is adopted as the second elastic member 600 for damping vibration and is easy to deform due to small load, so that 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 600, 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 500, and the rear seat frame in fig. 3 includes only the second elastic member 600. In other possible implementations, the rear seat frame may also include the first elastic element 500 and the second elastic element 600 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 first beam 130 has a third sliding slot 131 thereon, the length direction of the third sliding slot 131 is parallel to the axial direction of the first beam 130, and the headrest 160 is slidably mounted in the third sliding slot 131. For example, in the embodiment of the present disclosure, by providing the third sliding groove 131 on the first cross member 130, the headrest 160 can not only approach and depart from the seat frame 200 in the axial direction of the first sliding rod 110, but also adjust the headrest 160 to move left and right in the axial direction of the first cross member 130, thereby further improving the seating experience of the passenger.

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 700, and the plurality of support legs 210 are slidably mounted on the slide rail 700. Illustratively, in the disclosed embodiment, by slidably mounting the plurality of support legs 210 in the slide rails 700, the passenger can push the row seat framework to move on the slide rails 700 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 700 can 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 with a height adjusting function, comprising: a backrest framework (100), a cushion framework (200), at least one limit plate (300) and a chain transmission component (400),

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

the at least one limiting plate (300) is hinged on at least one of the first connecting plate (140) and the second connecting plate (150), the hinge axis of the at least one limiting plate (300) is parallel to the axial direction of the first sliding rod (110) and the second sliding rod (120), a limiting bulge (310) is arranged on the limiting plate (300), the first sliding rod (110) is provided with a first limiting hole (111) matched with the limiting bulge (310), the second sliding rod (120) is provided with a second limiting hole (121) matched with the limiting bulge (310),

the chain transmission assembly (400) comprises a first chain wheel (410), a second chain wheel (420), a chain (430) and a driving device (440), the first chain wheel (410) and the second chain wheel (420) are arranged on one of the first connecting plate (140) and the second connecting plate (150) at intervals along the axial direction of the first slide bar (110), the direction of the rotating shaft of the first chain wheel (410) and the second chain wheel (420) is vertical to the first slide bar (110), the chain (430) is wound on the first chain wheel (410) and the second chain wheel (420), at least one of the first slide bar (110) and the second slide bar (120) is fixedly connected with the chain (430), the driving device (440) is in transmission connection with any one of the first chain wheel (410) and the second chain wheel (420).

2. The rear seat frame of claim 1, wherein the first slide bar (110) has a plurality of first limiting holes (111), the plurality of limiting holes (111) are uniformly spaced along the axial direction of the first slide bar (110), the second slide bar (120) has a plurality of second limiting holes (121), and the plurality of second limiting holes (121) are uniformly spaced along the axial direction of the second slide bar (120).

3. The back row seat frame according to claim 1, further comprising an elastic pad (320), wherein the elastic pad (320) and the limiting protrusion (310) are located on the same side of the limiting plate (300), and the elastic pad (320) is fixedly connected with the limiting plate (300).

4. The rear seat frame of claim 3, wherein the resilient pad (320) is a rubber pad.

5. The rear seat frame according to any one of claims 1 to 4, wherein the first cross member (130) has a third slide groove (131) formed thereon, a length direction of the third slide groove (131) being parallel to an axial direction of the first cross member (130), and the headrest (160) is slidably mounted in the third slide groove (131).

6. The rear seat frame according to any one of claims 1 to 4, further comprising a second cross member (170), wherein both ends of the second cross member (170) are connected to the first connecting plate (140) and the second connecting plate (150), respectively.

7. The rear seat frame according to any of claims 1 to 4, wherein the first slide bar (110) and the second slide 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 (700), the plurality of support legs (210) being slidably mounted on the slide rail (700).

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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