TWI717274B - Seat plate and chair back linkage mechanism - Google Patents

Abstract

A seat plate and chair back linkage mechanism, which includes a tube, a lateral support assembly having a first lateral support and a second lateral support, a chair seat, a chair back and a drive source, the tube is disposed on the first and second lateral supports, the chair seat is disposed between the first and second lateral supports and provided with a bottom having two first connecting portions and two second connecting portions, one of the two first connecting portions is pivoted to the first lateral support, the other first connecting portion is pivoted to the second lateral support, the chair back is disposed between the first and second lateral supports and is connected to the second connecting portions, so as to connect the chair back to the chair seat, the drive source is connected to the end of the chair back near the tube to move the chair back.

Description

Seat plate and seat back linkage mechanism

The present invention relates to a seat, in particular to a seat with adjustable seat back tilt angle.

The seat of most vehicles is designed to adjust the tilt angle of the seat back. In particular, there is a seat that can adjust the tilt angle of the seat back and the seat at the same time. When the seat back is tilted, the seat has a corresponding The conventional seat plate and seat back linkage mechanism has various designs. As shown in Figure 1, it is one of the configurations, including: a first seat back unit 61, a first fixing seat 62, and a The first moving seat 63 and a first connecting rod group 64, the first seat back unit 61 is connected to the first fixing seat 62, one end of the first connecting rod group 64 is pivoted to the seat back unit 61, and the other One end is pivoted to the first fixing base 62, and there is a pivot point 641 between the two ends of the first link group 64, and the pivot point 641 is connected to one end of the first moving base 63. Therefore, when When the user controls the first seat back unit 61 to tilt backward, the pivot point 641 of the first linkage group 64 can drive the first movable seat 63 to move backwards accordingly. In addition, the first fixed seat 62 and The other end of the connection of the first seat back unit 61 has a first seat tube 621, and the first movable seat 63 has a slot 631 on the side facing the first seat tube 621, and the first movable seat 63 moves Until the slot 631 is locked on the first seat tube 621.

The design of another structure of the conventional seat plate and seat back linkage mechanism is shown in FIG. 2, including: a second movable seat 71, a second linkage group 72 and two second seat tubes 73. One end of the rod group 72 is provided for pivoting to a second seat back unit 74, and the other end of the second link group 72 is pivoted to the second moving base 71, and the second moving base 71 is disposed on the two On the second seat tube 73, the second movable seat 71 has two locking protrusions 71A facing one side of the second seat tube 73, and two sides of the locking protrusions 71A are respectively connected with an arc surface 71B , When the user controls the second seat back unit 74 to tilt backward, the second linkage group 72 will move the second moving seat 71 in conjunction with it, so that the second moving seat 71 is close to one end of the second seat back unit 74 Along the arcs of the arcs 71B, descend to achieve the effect of linkage.

Another structural design of the conventional seat plate and seat back linkage mechanism is shown in FIG. 3, including: a third seat back unit 81, a third movable seat 82, a seat portion 83 and a plurality of bolts 84. The third movable seat 82 has a plurality of long slots 821, the third seat back unit 81 has two bolts 84, and the third movable seat 82 also has two bolts 84, and each bolt 84 is slidably disposed In each of the long grooves 821, when the third seat back unit 81 is tilted backward, the third seat back unit 81 links the third moving seat 82 to move through a third link group 85, and the third moving seat 82 To guide the long groove 821, the third moving seat 82 is moved backward and downward.

It can be seen from the foregoing that when the conventional seat pan and seat back linkage mechanism is in action, the seat will protrude forward and tilt correspondingly when the seat is tilted back. However, general public transportation vehicles such as airplanes and high-speed rail seats The spacing between the rows is quite narrow, and passengers often don’t have enough space for their feet to stretch when riding. As a result, when the seat back is tilted backward, the seat seat will move forward further, which will reduce the space in front of the passenger. Furthermore, passengers have a poor riding experience. For this reason, a seat plate and seat back linkage mechanism that can simultaneously maintain the space in front of the passengers when the seat is tilted back is needed.

The present invention provides a seat pan and seat back linkage mechanism. The main purpose is to provide a linkage mechanism in a limited space inside the seat, so that the seat back can achieve the following two effects after reclining.

First, the occupant's buttocks rotate downward with the seat plate, but the knees do not move forward or upward to maintain the original seating space without affecting the original extension space of the feet.

Second, an average force-driven mechanism is designed during the reclining process to keep the occupant's buttocks in the original position and recline backward without moving or shaking left and right, and increase the stability of the seat back structure.

In order to achieve the foregoing objective, the seat plate and seat back linkage mechanism of the present invention includes: a tube body; a side bracket group having a first side bracket and a second side bracket, the first side bracket and the second side bracket There is a distance between them, the tube body is installed on the first side bracket and the second side bracket, the first side bracket and the second side bracket respectively have a first body section and a second body section connected , The first body section and the second body section extend in different directions, the tube body is installed on the first body section of the first side bracket and the second side bracket; a seat is installed on the first side Between the bracket and the second side bracket, the seat is mounted on the tube, the seat has a bottom surface facing the tube, the seat has a first end and a second end, The bottom surface has two first joining parts and two second joining parts, one of the first joining part and the second joining part are located at the first end, and the other the first joining part and the second joining part are located at the second end, The first joint at the first end is pivotally connected to the first side bracket, and the first joint at the second end is pivotally connected to the second side bracket; a chair back is provided on the first side bracket and the second side bracket. Between the side brackets, the seat back is pivoted on the first side bracket and the second side bracket, and the seat back is connected with the second joint portion of the seat, so that the seat back and the seat can be linked; and A driving source is connected to an end of the chair back close to the tube body, defining the end of the chair back close to the tube body as a driving end, and the driving source is provided to drive the driving end to move.

"Learning Technology"

61: The first backrest unit

62: The first fixed seat

63: The first mobile seat

64: The first link group

641: Pivot

71: second mobile seat

71A: Locking convex part

71B: curved surface

72: The second connecting rod group

73: second seat tube

74: second seat back unit

81: Third seat back unit

82: third mobile seat

821: long slot

83: Seat

84: plug

"This Creation"

P: Tube body

Y: horizontal

10: Side bracket group

11: The first side bracket

12: The second side bracket

11A, 12A: first leg

11B, 12B: second leg

11S, 12S: inner side

20: Seat

20A: first end

20B: second end

21: Bottom

22: The first joint

221: The first set of holes

23: second joint

231: The second set of holes

30: chair back

31: First side

32: second side

G1: First perforation

G2: second perforation

35: drive end

40: drive source

50: connecting rod

51: first link

52: second link

511, 521: first convex post

512, 522: second boss

S1: Pivot

H1: Pivot

L: Locker

K: cylinder

Figure 1 is a schematic diagram of the conventional technology.

Figure 2 is a schematic diagram of the conventional technology.

Figure 3 is a schematic diagram of the conventional technology.

Figure 4 is an exploded view of this creation.

Figure 5 is a three-dimensional view of this creation.

Figure 6 is a three-dimensional view of this creation from another perspective.

Figure 7 is a schematic diagram of the action of the linkage mechanism of the creative seat plate and chair back.

Figure 8 is a schematic diagram of the action of the creative seat plate and chair back linkage mechanism.

The present invention provides a seat plate and chair back linkage mechanism, please refer to Figures 4 to 8, including: a tube body P extending along a transverse direction Y, in this embodiment, the tube body P is a hollow cylinder; The side bracket set 10 has a first side bracket 11 and a second side bracket 12, the first side bracket 11 and the second side bracket 12 are separated by a distance, and the pipe body P is installed on the One side bracket 11 and the second side bracket 12, the first side bracket 11 and the second side bracket 12 are roughly L-shaped, the first side bracket 11 and the second side bracket 12 have the same shape, the first The side support 11 and the second side support 12 respectively have a first trunk section 11A, 12A and a second trunk section 11B, 12B connected, the first trunk section 11A, 12A and The extension directions of the second body sections 11B, 12B are different, and the tube body P is installed on the first body sections 11A, 12A of the first side bracket 11 and the second side bracket 12; in this embodiment, the first body The side bracket 11 and the second side bracket 12 are arranged along the transverse direction Y. In one embodiment, the two ends of the tube P are assembled on the first side bracket 11 and the second side bracket 12 respectively In another embodiment, the tube P penetrates the first side bracket 11 and the second side bracket 12.

A seat 20 is installed between the first side bracket 11 and the second side bracket 12, the seat 20 is installed on the tube P, the seat 20 has a bottom surface 21, and the bottom surface 21 is the surface For the tube P, the seat 20 has a first end 20A and a second end 20B. The extension direction between the first end 20A and the second end 20B is the transverse direction Y, and the bottom surface 21 has two first ends. The coupling portion 22 and the two second coupling portions 23, one of the first coupling portion 22 and the second coupling portion 23 is located at the first end 20A, and the other the first coupling portion 22 and the second coupling portion 23 are located at the second end 20B, the first connecting portion 22 and the second connecting portion 23 are separated by a distance. The first connecting portion 22 at the first end 20A is pivotally connected to the first side bracket 11, and at the second end 20B The first joint 22 is pivotally connected to the second side bracket 12, so that the seat 20 pivots around the first joint 22; in a preferred embodiment, the first side bracket 11 and the second side bracket 12 has an inner side surface 11S and 12S, respectively. The inner side surface 11S of the first side bracket 11 and the inner side surface 12S of the second side bracket 12 face each other. The first side bracket 11 and the second side bracket 12 face each other. The inner sides 11S and 12S of the trunk sections 11A and 12A respectively have a pivot H1, the first coupling portion 22 has a first set of holes 221, and the pivot H1 is inserted into the first set of holes 221.

In a preferred embodiment, the number of the pipes P is two, the two pipes P are arranged in parallel and separated by a distance, and the pivot H1 is located between the two pipes P;

A seat back 30 is arranged between the first side bracket 11 and the second side bracket 12, the seat back 30 is pivoted on the first side bracket 11, the second side bracket 12, the seat back 30 and the seat The second connecting portion 23 of 20 is connected, so that the seat back 30 and the seat 20 can be linked. The seat back 30 has a first side surface 31 and a second side surface 32, the first side surface 31 and the second side surface 32 These are the opposite sides of the seat back 30 along the transverse direction Y.

A driving source 40 is connected to the end of the seat back 30 close to the tube P, defining the end of the seat back 30 close to the tube P as a driving end 35, and the driving source 40 is provided for driving the driving end 35 Displacement, so that the seat back 30 pivots. In this embodiment, the driving source 40 is a pressing cylinder. One end of the driving source 40 is connected to the driving end 35 of the seat back 30, and the other end of the driving source 40 It is fixed to the pipe body P by a locker L.

Preferably, the second coupling portion 23 is closer to the seat back than the first coupling portion 22 is.

In the preferred embodiment, it further includes two connecting rods 50, defining the two connecting rods 50 as a first connecting rod 51 and a second connecting rod 52. One end of the first connecting rod 51 is connected to the seat back 30 On the first side surface 31, the other end of the first connecting rod 51 is connected to the second coupling portion 23 of the first end 20A of the seat 20, and one end of the second connecting rod 52 is connected to the second connecting portion of the seat back 30 On the side surface 32, the other end of the second connecting rod 52 is connected to the second joining portion 23 of the second end 20B of the seat 20.

In a preferred embodiment, both the first side surface 31 and the second side surface 32 have a first through hole G1, the second coupling portion 23 has a second set of holes 231, and two of the connecting rods 51, 52 One end has a first protrusion 511, 521, the other ends of the two connecting rods 51, 52 have a second protrusion 512, 522, the first protrusion 511 of the first connecting rod 51 is inserted into the first side surface 31 The first hole G1 of the first connecting rod 51 is inserted into the second set hole 231 of the second coupling portion 23 at the first end 20A, and the first protrusion of the second connecting rod 52 The post 521 is inserted into the first hole G1 of the second side surface 32, and the second protruding post 522 of the second connecting rod 52 is inserted into the second assembly hole 231 of the second coupling portion 23 at the second end 20B.

In a preferred embodiment, the second body sections 11B, 12B of the first side bracket 11 and the second side bracket 12 respectively have a pivot hole S1, and the first side surface 31 and the second side surface 32 both have a Two perforations G2. The first perforation G1 is adjacent to the second perforation G2. The first perforation G1 is closer to the first body sections 11A and 12A than the second perforation G2. It also has two cylinders K and two cylinders K The seat back 30 is pivoted on the first side bracket 11 and the second side bracket 12 by passing through the pivot hole S1 and the second through hole G2 respectively.

From the foregoing, it can be seen that the present invention mainly uses the driving source 40 to drive the seat back 30 to pivot. The seat back 30 and the seat 20 are connected by a first link 51 and a second link 52. Therefore, when the seat back 30 pivots, the first connecting rod 51 and the second connecting rod 52 drive the second connecting portion 23 to move, thereby driving the seat 20 close to the end of the seat back 30 to move downward, so that the chair The end of the seat 20 away from the seat back 30 is tilted upward, thereby achieving the purpose of preventing the seat back from being displaced back and forth when the seat back is tilted.

P: Tube body

Y: horizontal

10: Side bracket group

11: The first side bracket

12: The second side bracket

11A, 12A: first leg

11B, 12B: second leg

11S, 12S: inner side

20: Seat

20A: first end

20B: second end

21: Bottom

22: The first joint

221: The first set of holes

23: second joint

231: The second set of holes

30: chair back

31: First side

32: second side

G1: First perforation

G2: second perforation

35: drive end

40: drive source

50: connecting rod

51: first link

52: second link

511, 521: first convex post

512, 522: second boss

S1: Pivot

H1: Pivot

L: Locker

K: cylinder

Claims (8)

A linkage mechanism for a seat plate and a backrest includes: a tube body; a side bracket group with a first side bracket and a second side bracket, the first side bracket and the second side bracket are separated by a distance , The tube body is installed on the first side bracket and the second side bracket, the first side bracket and the second side bracket respectively have a first body section and a second body section connected, the first body section Different from the extension direction of the second body section, the tube body is installed on the first body section of the first side bracket and the second side bracket; a seat is installed on the first side bracket and the second side bracket In between, the seat is installed on the tube, the seat has a bottom surface facing the tube, the seat has a first end and a second end, and the bottom surface has two first ends. The coupling portion and the two second coupling portions, one of the first coupling portion and the second coupling portion is located at the first end, and the other of the first coupling portion and the second coupling portion is located at the second end, and is located between the first end The first connecting portion is pivotally connected to the first side bracket, and the first connecting portion at the second end is pivotally connected to the second side bracket; a seat back is arranged between the first side bracket and the second side bracket, the The seat back is pivoted on the first side bracket and the second side bracket, the seat back is connected to the second joint portion of the seat, so that the seat back and the seat can be linked; and a driving source is connected to the seat The end of the back close to the tube body defines the end of the chair back close to the tube body as a driving end, and the driving source is provided to drive the driving end to move. As described in the first item of the scope of patent application, the seat plate and the backrest linkage mechanism, wherein the tube extends along a transverse direction, the first side bracket and the second side bracket are arranged along the transverse direction, and the first The extending direction between the end and the second end is the transverse direction. The seat plate and seat back linkage mechanism described in the first item of the scope of patent application, wherein the first side bracket and the second side bracket each have an inner side surface, and the inner side surface of the first side bracket and the second side The inner sides of the brackets face each other, the first side bracket and the second side bracket are respectively provided with a pivot on the inner side of the first body section, the first coupling portion has a first set of holes, and the pivot is Inserted in the first set of holes. For the seat plate and seat back linkage mechanism described in item 3 of the scope of patent application, wherein the number of the pipes is two, the two pipes are arranged in parallel and separated by a distance, and the pivot is located between the two pipes. For the seat plate and seat back linkage mechanism described in item 1 of the scope of patent application, wherein the driving source is a pressure cylinder, one end of the driving source is connected to the driving end of the chair back, and the other end of the driving source passes through a The locker is fixed to the tube body. For example, the seat plate and seat back linkage mechanism described in item 1 of the scope of patent application, wherein the seat back has a first side surface and a second side surface, and also includes two connecting rods. The second connecting rod is defined as a first connecting rod Rod and a second connecting rod, one end of the first connecting rod is connected to the first side surface of the seat back, and the other end of the first connecting rod is connected to the second connecting portion of the first end of the seat, the first One end of the two connecting rods is connected to the second side surface of the seat back, and the other end of the second connecting rod is connected to the second joining part of the second end of the seat. For the seat plate and seat back linkage mechanism described in item 6 of the scope of patent application, wherein the first side surface and the second side surface both have a first perforation, the second joint portion has a second set of holes, and two One end of the connecting rod has a first protrusion, and the other end of the two connecting rods has a second protrusion. The first protrusion of the first connecting rod is inserted into the first through hole of the first side surface. The second protruding post of a connecting rod is inserted into the second assembly hole of the second coupling portion at the first end, the first protruding post of the second connecting rod is inserted into the first through hole of the second side surface, the first The second protruding post of the two connecting rods is inserted into the second assembly hole of the second connecting portion at the second end. For the seat plate and seat back linkage mechanism described in item 1 of the scope of patent application, wherein the first side bracket and the second body section of the second side bracket each have a pivot hole, the first side and the second side Each side has a second perforation, the first perforation is adjacent to the second perforation, and the first perforation is closer to the first body section than the second perforation, and there are two pillars, and the two pillars penetrate through the The pivot hole and the second through hole enable the seat back to be pivoted on the first side bracket and the second side bracket.

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