Electric folding seat cushion

Abstract

The application provides an electric folding seat cushion and belongs to the technical field of seats. The application comprises a first driving device, a second driving device, a first toothed plate, a first connecting rod, a second connecting rod, a third connecting rod, a front-moving motor mounting bracket and a second toothed plate. The third connecting rod, the right beam of the seat cushion, the second toothed plate and the front-moving motor mounting bracket constitute a four-connecting-rod mechanism. The first driving device is used for driving the first toothed plate to rotate, so that the seat cushion is folded. The second driving device is used for driving the second toothed plate to rotate, so that the four-connecting-rod mechanism is moved, and the seat cushion is moved forward. The application sets the driving devices near the left and right bases, drives the connecting rods to move, and then drives the seat cushion to move forward and fold. On the basis of realizing the forward movement and folding, the space in the seat cushion is fully utilized, so that the seat cushion can realize the forward movement and folding without occupying too much space.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of seats, in particular to an electric folding seat. BACKGROUND

[0002] With the development of the automobile industry, automobile manufacturers have more and more requirements for the functions that can be realized by automobile seat cushions. In order to adapt to different application scenarios, forward-moving folding seat cushions have been mentioned by automobile manufacturers. However, the existing folding seat cushions require a large layout space and occupy too much space, affecting the layout of other structures. SUMMARY

[0003] Therefore, in order to solve the above problems in the prior art, the present application provides a novel electric folding seat, which is provided with a driving device near the left and right bases to drive the movement of a connecting rod and thus drive the seat cushion to move forward and fold. On the basis of realizing forward movement and folding, the space in the seat cushion is fully utilized, so that the seat cushion can move forward and fold without occupying too much space.

[0004] To achieve the above object, the present application provides the following technical scheme:

[0005] An electric folding seat cushion comprises:

[0006] A first driving device is fixed to one end of a left base of a seat cushion, and an output end of the first driving device is provided with a first gear;

[0007] A forward-moving motor mounting bracket is rotatably connected to a right base of the seat cushion;

[0008] A second driving device is fixed to the forward-moving motor mounting bracket, and an output end of the second driving device is provided with a second gear;

[0009] A first toothed plate has one end with teeth engaged with the first gear;

[0010] A first connecting rod has one end rotatably connected to a left beam of the seat cushion and the other end rotatably connected to one end of the first toothed plate with teeth and the left base of the seat cushion;

[0011] A second connecting rod has one end rotatably connected to the left beam of the seat cushion and the other end rotatably connected to one end of the first toothed plate away from the end with teeth;

[0012] A third connecting rod has one end rotatably connected to a right beam of the seat cushion and the other end rotatably connected to the forward-moving motor mounting bracket and the right base of the seat cushion;

[0013] A second toothed plate has one end with teeth engaged with the second gear and the other end rotatably connected to the right beam of the seat cushion;

[0014] The first driving device is used for driving the first toothed plate to rotate, so as to fold the seat cushion.

[0015] The second driving device is used for driving the second toothed plate to rotate, so as to move forward the seat cushion.

[0016] Preferably, one end of the second toothed plate with teeth is rotationally connected with the forward-moving motor mounting bracket.

[0017] Preferably, the application further comprises:

[0018] The forward-moving limiting device and the folding limiting device;

[0019] One end of the forward-moving limiting device and the folding limiting device is respectively fixed to the forward-moving motor mounting bracket and the left base of the seat cushion, and the other end of both is provided with a pin shaft.

[0020] The first toothed plate and the second toothed plate are both provided with a waist-shaped hole matched with the pin shaft.

[0021] Preferably, the first driving device and the second driving device are both driving motors.

[0022] Compared with the prior art, the application has the following beneficial effects:

[0023] The electric folding seat provided by the application moves forward and folds the seat cushion by driving the driving device near the left and right bases to drive the connecting rod to move and then drive the seat cushion, fully utilizes the space in the seat cushion, and realizes the forward movement and folding of the seat cushion without occupying too much space.

[0024] The electric folding seat provided by the application realizes the forward movement by driving the four-connecting-rod mechanism composed of the driving motor and the connecting rod, realizes the folding of the seat cushion by driving the connecting rod to turn over, has a simple structure, needs small space, is easy to arrange, and has low cost.

[0025] The electric folding seat provided by the application can realize the independent adjustment or linkage adjustment of the forward movement and folding of the seat cushion by the driving motor. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structure schematic diagram of the forward movement posture of the seat cushion in the application;

[0027] Figure 2 It is a structure schematic diagram of the folding posture of the seat cushion in the application;

[0028] Figure 3 It is a structure schematic diagram of the seat cushion in the application;

[0029] Figure 4Fig. 1 is a schematic view of a first toothed plate structure;

[0030] Figure 5 Fig. 2 is a schematic view of a second toothed plate structure;

[0031] Figure 6 Fig. 3 is a schematic view of a split of the application assembled in a seat cushion;

[0032] Figure 7 Fig. 4 is a schematic view of a four-bar linkage mechanism in a forward posture of the application;

[0033] Figure 8 Fig. 5 is a schematic view of a four-bar linkage mechanism in a folding posture of the application;

[0034] In the figure, 1. first driving device, 2. left base of seat cushion, 3. first gear, 4. first toothed plate, 5. first connecting rod, 6. left beam of seat cushion, 7. second connecting rod, 8. second driving device, 9. forward moving motor mounting bracket, 10. second gear, 11. second toothed plate, 12. right beam of seat cushion, 13. third connecting rod, 14. seat cushion, 15. right base of seat cushion, 16. forward moving limiting device, 17. pin shaft, 18. waist-shaped hole, 19. rear horizontal pipe of seat cushion, 20. lower horizontal pipe of seat cushion, 21. anti-submarine pipe of seat cushion, 22. stepped nut, 23. stepped bolt. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0036] In the description of the application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood in a broad sense, for example, "connected" can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] As shown in Figures 1-8 The present application provides an electric folding seat, comprising:

[0039] A first driving device 1 is fixed to one end of a left base 2 of a seat cushion, and an output end of the first driving device 1 is provided with a first gear 3;

[0040] A forward-moving motor mounting bracket 9 is rotatably connected with a right base 15 of the seat cushion;

[0041] A second driving device 8 is fixed to the forward-moving motor mounting bracket 9, and an output end of the second driving device 8 is provided with a second gear 10;

[0042] A first toothed plate 4 has one end with teeth engaged with the first gear 3;

[0043] A first connecting rod 5 has one end rotatably connected with a left beam 6 of the seat cushion, and the other end rotatably connected with one end of the first toothed plate 4 with teeth and the left base 2 of the seat cushion;

[0044] A second connecting rod 7 has one end rotatably connected with the left beam 6 of the seat cushion, and the other end rotatably connected with one end of the first toothed plate 4 away from the end with teeth;

[0045] A third connecting rod 13 has one end rotatably connected with a right beam 12 of the seat cushion, and the other end rotatably connected with the forward-moving motor mounting bracket 9 and the right base 15 of the seat cushion;

[0046] A second toothed plate 11 has one end with teeth engaged with the second gear 10, and the other end rotatably connected with the right beam 12 of the seat cushion;

[0047] The first driving device 1 is used to drive the first toothed plate 4 to rotate, so as to fold the seat cushion 14;

[0048] The second driving device 8 is used to drive the second toothed plate 11 to rotate, so as to move the seat cushion 14 forward.

[0049] In the present application, one end of the second toothed plate 11 with teeth is rotatably connected with the forward-moving motor mounting bracket 9.

[0050] The electrically folding seat cushion provided by this invention comprises a four-bar linkage consisting of the third link 13, the right side beam 12 of the seat cushion, the second toothed plate 11, and the forward-moving motor mounting bracket 9. Specifically, as shown... Figure 1 , 3 As shown in Figures 7 and 8, the rotational connection points of the third link 13 with the right side beam 12 of the seat cushion and the forward motor mounting bracket 9 respectively constitute rotation points B and A in the four-bar linkage. The rotational connection points of the second toothed plate 11 with the right side beam 12 of the seat cushion and the forward motor mounting bracket 9 respectively constitute rotation points C and D in the four-bar linkage.

[0051] In this invention, the rotatable connections are preferably achieved by the cooperation of stepped bolts 23 and stepped nuts 22. Specifically, holes for the stepped bolts to pass through are provided on the left base 2 of the seat cushion, the right base 15 of the seat cushion, the left beam 6 of the seat cushion, the right beam 12 of the seat cushion, the first toothed plate 4, the first connecting rod 5, the second connecting rod 7, the third connecting rod 13, and the second toothed plate 11. After the stepped bolts pass through the holes, the stepped nuts are assembled.

[0052] This invention also includes:

[0053] Forward movement limiting device 16 and folding limiting device;

[0054] One end of the forward movement limiting device 16 and the folding limiting device are respectively fixed to the forward movement motor mounting bracket 9 and the left base of the seat cushion 2, and the other end is provided with a pin 17.

[0055] Both the first toothed plate 4 and the second toothed plate 11 are provided with matching waist-shaped holes 18, and the pin 17 passes through the waist-shaped holes 18.

[0056] The forward movement limiting device 16 enables the pin 17 to move within the range defined by the waist-shaped hole 18, ensuring operational stability and also ensuring the stability of the meshing between the second toothed plate 11 and the second gear 10.

[0057] The folding limit device enables the pin 17 to move within the range defined by the waist-shaped hole 18, ensuring the stability of the folding operation, and also ensuring the stability of the meshing between the first toothed plate 4 and the first gear 3.

[0058] In this invention, both the first driving device 1 and the second driving device 8 are drive motors.

[0059] In this invention, a hole for the second gear 10 to pass through can also be opened on the forward motor mounting bracket 9 to ensure the stability of the operation of the second drive device 8.

[0060] In this invention, the seat cushion 14 can be any conventional seat cushion, and its specific structure can be found in [reference needed].Figure 6 The conventional seat cushion is shown in the separated view, which is composed of a seat cushion left base 2, a seat cushion right base 15, a seat cushion left side beam 6, a seat cushion right side beam 12, a seat cushion rear cross pipe 19, a seat cushion lower cross pipe 20, a seat cushion anti-submarine pipe 21, and a seat cushion framework, etc. The detailed structure is not described herein, and is well known to those skilled in the art. The present application is an improvement on the structure of the conventional seat cushion.

[0061] The working principle of the forward movement and folding of the present application is as follows:

[0062] The forward and backward movement of the seat cushion 14:

[0063] When the seat cushion 14 needs to move forward, the first driving device 1 is locked, the second gear 10 is engaged with the second toothed plate 11, the second driving device 8 drives the second gear 10 to rotate and in turn drives the second toothed plate 11 to rotate, so that the second toothed plate 10 rotates forward, thereby driving the third connecting rod 13 to move forward, achieving the forward movement of the seat cushion 14.

[0064] When the seat cushion 14 needs to move backward, the second gear 10 can be rotated reversely.

[0065] The folding function of the seat cushion 14:

[0066] When the seat cushion 14 needs to be folded, the second driving device 8 is locked, the first gear 3 is engaged with the first toothed plate 4, and the first driving device 1 drives the first gear 3 to rotate and in turn drives the first toothed plate 4 to rotate backward. At this time, since the second driving device 8 is in the locked state, the relative positions of the rotation points A, B, C, and D are locked and will not move relatively. Therefore, the four connecting rod mechanisms are driven to rotate backward at the same time, thereby realizing the folding of the seat cushion 14.

[0067] That is, the first driving device 1 controls the folding of the seat cushion 14, and the second driving device 8 controls the forward and backward movement of the seat cushion 14.

[0068] The above is only a preferred embodiment of the present application; however, the protection scope of the present application is not limited thereto. Any skilled person in the art can make equivalent replacements or changes to the technical solution of the present application and the improvement concept thereof within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An electrically folding seat, characterized in that, The utility model relates to a seat folding and moving device, which comprises: a first driving device fixed to one end of a left base of a seat cushion, with a first gear set at an output end thereof; a forward-moving motor mounting bracket in rotational connection with a right base of the seat cushion; a second driving device fixed to the forward-moving motor mounting bracket, with a second gear set at an output end thereof; a first toothed plate having one end with teeth in engagement with the first gear; a first connecting rod having one end in rotational connection with a left side beam of the seat cushion and the other end in rotational connection with one end of the first toothed plate having teeth and the left base of the seat cushion; a second connecting rod having one end in rotational connection with the left side beam of the seat cushion and the other end in rotational connection with one end of the first toothed plate away from the end having teeth; a third connecting rod having one end in rotational connection with a right side beam of the seat cushion and the other end in rotational connection with the forward-moving motor mounting bracket and the right base of the seat cushion; a second toothed plate having one end with teeth in engagement with the second gear and the other end in rotational connection with the right side beam of the seat cushion; the first driving device is used to drive the first toothed plate to rotate, so as to fold the seat cushion; the second driving device is used to drive the second toothed plate to rotate, so as to move the seat cushion forward.

2. The electric folding seat according to claim 1, wherein One end of the second toothed plate having teeth is in rotational connection with the forward-moving motor mounting bracket.

3. The electric folding seat according to claim 2, wherein Further comprising: forward-moving and folding limiting devices; one end of the forward-moving and folding limiting devices is fixed to the forward-moving motor mounting bracket and the left base of the seat cushion respectively, and the other end of the forward-moving and folding limiting devices is provided with a pin shaft; a waist-shaped hole is formed in the first toothed plate and the second toothed plate, and the pin shaft is inserted into the waist-shaped hole.

4. A power folding seat as claimed in any one of claims 1 to 3, wherein, The first driving device and the second driving device are gear driving motors.

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