Rear lifting mechanism for cushion framework

Abstract

The utility model belongs to the technical field of automobiles, and relates to a cushion framework rear lifting mechanism which comprises cushion framework side plate supports symmetrically arranged on the two sides and a backrest side plate lower side support. A first linkage support, a second linkage support and a third linkage support are sequentially connected between the seat cushion framework side plate support on each side and the backrest side plate lower side support in a hinged mode, and the end, close to the backrest side plate lower side support, of the second linkage support is hinged to a backrest lower connecting plate support. Lifting transverse pipes are connected to the portions, on the two sides of the hinged side of the first linkage support and the second linkage support, of the first linkage support, and rotation of the support on the lower side of the backrest side plate drives the lifting transverse pipes to ascend and descend through linkage of the first linkage support, the second linkage support and the third linkage support. The waist of a passenger can be supported, the spine pressure is relieved, the waist comfort is improved, blood circulation is promoted, and the health of the passenger is protected.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles, and particularly relates to a rear lifting mechanism for a cushion frame with adjustable backrest comfort. Background Art

[0002] In order to improve the riding comfort of car seats, multiple connections between various parts of the seat frame are designed to be adjustable connections to facilitate the adjustment of the seat posture, thereby providing sufficient and appropriate support for various parts of the body. On this basis, the concept of lifting the seat frame at the rear is proposed, which is mostly suitable for the front and middle rows. However, there is no lifting mechanism at the rear of the seat frame, which provides poor support for people's waists, and the riding comfort is not good. Long-term riding will also have adverse effects on health. Summary of the invention

[0003] The utility model aims to provide a seat cushion frame rear lifting mechanism which is comfortable to sit on and beneficial to waist support.

[0004] The purpose of the utility model is to solve the problem as follows:

[0005] A rear lifting mechanism for a seat cushion frame comprises a seat cushion frame side panel bracket and a lower side support of a backrest side panel symmetrically arranged on both sides, a first linkage bracket, a second linkage bracket and a third linkage bracket are hingedly connected in sequence between the seat cushion frame side panel bracket and the lower side support of the backrest side panel on each side, the second linkage bracket is hingedly connected to the lower connecting plate bracket of the backrest at one end adjacent to the lower side support of the backrest side panel, a lifting cross tube is connected to the first linkage bracket on both sides of the hinged side of the first linkage bracket and the second linkage bracket, and the rotation of the lower side support of the backrest side panel drives the lifting and lowering of the lifting cross tube through the linkage of the first linkage bracket, the second linkage bracket and the third linkage bracket.

[0006] As a further optimization of the technical solution of the utility model, the seat cushion frame side plate bracket is welded to the seat cushion side plate.

[0007] As a further optimization of the technical solution of the utility model, the lower connecting plate bracket of the backrest is welded to the lower connecting plate of the backrest.

[0008] As a further optimization of the technical solution of the utility model, the lifting cross pipe is welded to the first linkage bracket.

[0009] As a further optimization of the technical solution of the utility model, a cushion foaming layer is arranged on the upper part of the rear lifting mechanism of the cushion frame.

[0010] As a further optimization of the technical solution of the utility model, the seat cushion frame side panel bracket, the first linkage bracket, the second linkage bracket, the third linkage bracket, the lower side support of the backrest side panel, and the second linkage bracket and the lower connecting plate bracket of the backrest are all hingedly connected by bolts or hinge shafts, and the bolts or hinge shafts are all provided with lubricating bushings.

[0011] As a further optimization of the technical solution of the utility model, the bolts or the hinged shafts are both provided with lubricating bushings.

[0012] As a further optimization of the technical solution of the utility model, the lubricating bushing is a self-lubricating bushing made of one of the materials of bearing alloy, copper-based and aluminum-based alloy, powder metallurgy, polytetrafluoroethylene, and modified polyoxymethylene.

[0013] As a further optimization of the technical solution of the utility model, a long travel hole is opened on the first linkage bracket, and the first linkage bracket is hingedly connected to the second linkage bracket by passing a bolt or an articulated shaft fixed on the second linkage bracket through the long travel hole of the first linkage bracket.

[0014] As a further optimization of the technical solution of the utility model, an arc-shaped hole is opened on the lower side support of the backrest side panel, and the lower side support of the backrest side panel is hingedly connected to the third linkage bracket by passing a bolt or a hinge shaft fixed on the third linkage bracket through the arc-shaped hole on the lower side support of the backrest side panel.

[0015] Compared with the prior art, the utility model has the following outstanding advantages: the rear lifting mechanism of the seat frame can provide appropriate support for the waist of the passenger when the backrest is adjusted backward, providing a more comfortable riding experience for the passenger. The rear lifting mechanism can reduce the spinal pressure of the passenger, increase the comfort of the waist, promote blood circulation, enhance the riding comfort of the car, and better protect the health of the occupants, and is suitable for car seats. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural stereoscopic schematic diagram of the utility model. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the accompanying drawings. Figure 1 :

[0018] A rear lifting mechanism for a seat cushion frame comprises a seat cushion frame side panel bracket 70 and a lower side support 10 of a backrest side panel symmetrically arranged on both sides, wherein a first linkage bracket 60, a second linkage bracket 40 and a third linkage bracket 30 are hingedly connected in sequence between the seat cushion frame side panel bracket 70 and the lower side support 10 of the backrest side panel on each side, wherein one end of the second linkage bracket 40 adjacent to the lower side support 10 of the backrest side panel is hingedly connected to a lower connecting plate bracket 20 of the backrest, and a hinged portion between the second linkage bracket 40 and the lower side support 10 of the backrest side panel is located on one side of a middle portion of the second linkage bracket 40, and a lifting cross tube 50 is connected to the first linkage bracket 60 on both sides of the hinged side of the first linkage bracket 60 and the second linkage bracket 40, and the rotation of the lower side support 10 of the backrest side panel drives the lifting and lowering of the lifting cross tube 50 through the linkage of the first linkage bracket 60, the second linkage bracket 40 and the third linkage bracket 30.

[0019] Due to the adoption of the above technical solution, the lifting and lowering of the lifting cross tube 50 can drive the lifting and lowering of the cushion foam layer above the lifting cross tube 50 to adapt to the comfort of people sitting on the seat cushion, provide reasonable support for the waist, and be beneficial to waist health.

[0020] As a further optimization of the technical solution of the utility model, the seat cushion frame side plate bracket 70 is welded to the seat cushion side plate.

[0021] Due to the adoption of the above technical solution, the seat cushion frame side plate bracket 70 supports the seat cushion frame rear lifting mechanism, so that the seat cushion frame rear lifting mechanism moves relative to the seat cushion frame side plate bracket 70 .

[0022] As a further optimization of the technical solution of the utility model, the lower connecting plate bracket 20 of the backrest is welded to the lower connecting plate of the backrest.

[0023] Due to the adoption of the above technical solution, the lower connecting plate bracket 20 of the backrest supports the rear lifting mechanism of the seat cushion frame, so that the rear lifting mechanism of the seat cushion frame moves relative to the lower connecting plate bracket 20 of the backrest.

[0024] As a further optimization of the technical solution of the utility model, the lifting cross tube 50 is welded to the first linkage bracket 60 , and the lifting cross tube 50 rises and falls with the lifting and lowering of the first linkage bracket 60 .

[0025] As a further optimization of the technical solution of the utility model, a cushion foam layer is arranged on the upper part of the rear lifting mechanism of the cushion frame to form support for the cushion foam layer.

[0026] As a further optimization of the technical solution of the utility model, the seat cushion frame side panel bracket 70, the first linkage bracket 60, the second linkage bracket 40, the third linkage bracket 30, the lower side support 10 of the backrest side panel, and the second linkage bracket 40 and the lower connecting plate bracket 20 of the backrest are all hingedly connected by bolts 80 or hinge shafts, and the bolts 80 or the hinge shafts are all provided with lubricating bushings.

[0027] As a further optimization of the technical solution of the utility model, the bolt 80 or the hinge shaft is provided with a lubricating bushing.

[0028] As a further optimization of the technical solution of the utility model, the lubricating bushing is a self-lubricating bushing made of one of the materials of bearing alloy, copper-based and aluminum-based alloy, powder metallurgy, polytetrafluoroethylene, and modified polyoxymethylene.

[0029] Due to the adoption of the above technical solution, the self-lubricating sleeve can achieve self-lubrication for all articulated parts, reduce friction, ensure flexible movement, reduce or avoid jamming, and enhance the experience.

[0030] As a further optimization of the technical solution of the utility model, a long stroke hole 62 is opened on the first linkage bracket 60, and the first linkage bracket 60 is hingedly connected to the second linkage bracket 40 by passing a bolt 80 fixed on the second linkage bracket 40 or a hinge shaft through the long stroke hole 62 on the first linkage bracket 60.

[0031] As a further optimization of the technical solution of the utility model, an arc-shaped hole 11 is opened on the lower side support 10 of the backrest side plate, and the lower side support 10 of the backrest side plate is hingedly connected to the third linkage bracket 30 by passing a bolt 80 fixed to the third linkage bracket 30 or a hinge shaft through the arc-shaped hole 11 on the lower side support 10 of the backrest side plate.

[0032] When the backrest is adjusted backward, after the lower side support 10 of the backrest side panel rotates to the lower dead point of the arc hole 11 and contacts the bolt 80 or the hinge shaft fixed on the third linkage bracket 30, the second linkage bracket 40 is driven to move in the vertical direction through the third linkage bracket 30, and then the lifting cross tube 5 is driven upward through the second linkage bracket 40 to drive the seat cushion foam layer to adjust its height, so that the seat cushion foam layer can effectively support the passenger's waist.

[0033] When the backrest is adjusted forward from the final position to the designed position, the lifting mechanism returns to the initial position by gravity.

[0034] When the backrest is adjusted forward from the design position to the frontmost position, the bolt 80 or the hinge shaft fixedly connected to the third linkage bracket 30 moves relatively in the arc hole 11 on the lower side support 10 of the backrest side plate, so that the lower side support 10 of the backrest side plate does not generate an effective force value on the third linkage bracket 30, and other parts of the lifting mechanism are relatively stationary.

[0035] By adopting the above structure, the rear side of the seat cushion is raised through the linkage adjustment of the lifting mechanism and the backrest, so that the seat has a more perfect comfort.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions or technical features described in the aforementioned embodiments can still be simply replaced or modified with similar technologies, and these simple replacements or modifications do not deviate the essence of the corresponding technical solutions from the spirit and substance of the technical solutions of the embodiments of the present invention, and are still within the protection scope of the present invention.

Claims

1. A rear lifting mechanism for a seat cushion frame, comprising a seat cushion frame side plate bracket and a lower side support of a backrest side plate symmetrically arranged on both sides, characterized in that: The first linkage bracket, the second linkage bracket and the third linkage bracket are hingedly connected in sequence between the seat cushion frame side panel bracket and the lower side support of the backrest side panel on each side, the second linkage bracket is hingedly connected to the lower connecting plate bracket of the backrest at one end adjacent to the lower side support of the backrest side panel, and the first linkage brackets on both sides of the hinged side of the first linkage bracket and the second linkage bracket are connected with a lifting cross tube, and the rotation of the lower side support of the backrest side panel drives the lifting and lowering of the lifting cross tube through the linkage of the first linkage bracket, the second linkage bracket and the third linkage bracket.

2. The seat cushion frame rear lifting mechanism according to claim 1, characterized in that: The seat cushion frame side plate bracket is connected to the seat cushion side plate by welding.

3. The seat cushion frame rear lifting mechanism according to claim 1, characterized in that: The lower connecting plate bracket of the backrest is connected to the lower connecting plate of the backrest by welding.

4. The seat cushion frame rear lifting mechanism according to claim 1, characterized in that: The lifting cross pipe is welded to the first linkage bracket.

5. The seat cushion frame rear lifting mechanism according to claim 1, characterized in that: A cushion foaming layer is arranged on the upper part of the rear lifting mechanism of the cushion frame.

6. A seat cushion frame rear lifting mechanism according to any one of claims 1 to 5, characterized in that: The cushion frame side plate bracket, the first linkage bracket, the second linkage bracket, the third linkage bracket, the lower side support of the backrest side plate, and the second linkage bracket and the lower connecting plate bracket of the backrest are all hingedly connected by bolts or hinge shafts.

7. The seat cushion frame rear lifting mechanism according to claim 6, characterized in that: The bolts or the hinged shafts are both covered with lubricating bushings.

8. The seat cushion frame rear lifting mechanism according to claim 7, characterized in that: The lubricating bushing is a self-lubricating bushing made of one of the materials selected from the group consisting of bearing alloy, copper-based and aluminum-based alloys, powder metallurgy, polytetrafluoroethylene and modified polyoxymethylene.

9. The seat cushion frame rear lifting mechanism according to claim 6, characterized in that: The first linkage bracket is provided with a long travel hole, and the first linkage bracket is hingedly connected with the second linkage bracket by passing a bolt or an articulated shaft fixed on the second linkage bracket through the long travel hole on the first linkage bracket.

10. The seat cushion frame rear lifting mechanism according to claim 6, characterized in that: The lower support of the backrest side plate is provided with an arc hole, and the lower support of the backrest side plate is hingedly connected to the third linkage bracket by passing a bolt or a hinge shaft fixed on the third linkage bracket through the arc hole on the lower support of the backrest side plate.

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