CN215126353U

CN215126353U - Turnover chair back

Info

Publication number: CN215126353U
Application number: CN202120706495.5U
Authority: CN
Inventors: 闫敏洪
Original assignee: Foshan Leadcom Seating Co ltd
Current assignee: Foshan Leadcom Seating Co ltd
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-12-14
Anticipated expiration: 2031-04-07

Abstract

The utility model discloses a turnover chair back, belonging to the technical field of chairs, which comprises an upper chair back, a lower chair back and a turnover mechanism arranged between the upper chair back and the lower chair back; the turnover mechanism comprises a first hinge part and a second hinge part which are hinged with each other; the first hinge piece and the second hinge piece are respectively arranged at the bottom of the upper chair back and the top of the lower chair back. The turnover mechanism is arranged between the upper chair back and the lower chair back, so that the upper chair back is turned over; meanwhile, the turnover mechanism is a simple hinged structure, the structure of the chair back can be simplified while the turnover function of the upper chair back is the same as that of the existing turnover chair back, so that the chair back has the advantages of few parts, easier assembly and capability of reducing the production cost of enterprises.

Description

Turnover chair back

Technical Field

The utility model relates to the technical field of seats, in particular to convertible back of the chair.

Background

With the development of the automobile industry, consumers tend to diversify functions of automobile demands, and thus, some multifunctional seats are increasingly applied to automobiles. The folding front-turning seat can be quickly folded when the seat is not needed to be used, so that more space is made up, and the purpose of placing more luggage is achieved. The existing folding front-turning chair back has the disadvantages of complex turning structure, more parts, higher manufacturing process requirement, difficult assembly and high cost.

It is seen that improvements and enhancements to the prior art are needed.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned prior art's weak point, the utility model aims at providing a convertible back of the chair aims at solving current convertible back of the chair structure complicacy, the high problem of the assembly degree of difficulty.

In order to achieve the purpose, the utility model adopts the following technical proposal:

a turnover chair back comprises an upper chair back, a lower chair back and a turnover mechanism arranged between the upper chair back and the lower chair back; the turnover mechanism comprises a first hinge part and a second hinge part which are hinged with each other; the first hinge piece and the second hinge piece are respectively arranged at the bottom of the upper chair back and the top of the lower chair back.

In the turnover chair back, two first extension rods are arranged at the bottom of the upper chair back, and two second extension rods are arranged at the top of the lower chair back; the turnover mechanism also comprises a first structure reinforcing rod, a second structure reinforcing rod and a connecting piece which is sleeved on the first structure reinforcing rod and the second structure reinforcing rod; the two first extension rods are respectively and rotatably connected with two ends of the first structure reinforcing rod; the second structure reinforcing rod is fixedly arranged between the second extension rods.

In the turnover chair back, the first extension rod is provided with a positioning rod which is rotationally connected with the first structure reinforcing rod.

In the convertible back of the chair, the bottom of the back of the chair is equipped with the installed part that is used for installing the back of the chair to the seat support down.

In the turnover chair back, the second hinge part is connected with a limiting block positioned below the first hinge part; the limiting block is used for limiting the upper chair back which turns upwards.

In the turnover chair back, the limiting block is provided with an inclined plane matched with the first hinge piece.

Furthermore, the turnover chair back also comprises an elastic chair back which is connected with the upper chair back and the lower chair back at the same time, and the turnover mechanism is arranged in the elastic chair back.

Has the advantages that:

the utility model provides a turnover chair back, which realizes the turnover of an upper chair back by arranging a turnover mechanism between the upper chair back and a lower chair back; meanwhile, the turnover mechanism is a simple hinged structure, the structure of the chair back can be simplified while the turnover function of the upper chair back is the same as that of the existing turnover chair back, so that the chair back has the advantages of few parts, easier assembly and capability of reducing the production cost of enterprises.

Drawings

Fig. 1 is a schematic structural view of the convertible chair back provided by the present invention.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a schematic structural diagram of the turnover mechanism.

Fig. 4 is a schematic structural view of a convertible chair back in another embodiment.

Description of the main element symbols:

1-mounting the chair back; 2-lower chair back;

3-turning over the mechanism; 301-a first articulation; 302-a second articulation; 303-first structural reinforcement bar; 304-a second structural reinforcement bar; 305-a connector;

4-a mounting member; 5-a first extension bar; 6-a second extension bar; 7-positioning the rod; 8-a limiting block; 9-elastic chair back.

Detailed Description

The utility model provides a convertible back of the chair, for making the utility model discloses a purpose, technical scheme and effect are clearer, clear and definite, and it is right that the embodiment is lifted to follow with reference to the attached drawing the utility model discloses do further detailed description. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1 and 2, the present invention provides a convertible chair back, which comprises an upper chair back 1, a lower chair back 2, and a convertible mechanism 3 disposed between the upper chair back 1 and the lower chair back 2; the turnover mechanism 3 comprises a first hinge 301 and a second hinge 302 which are hinged with each other; the first hinge 301 and the second hinge 302 are respectively provided at the bottom of the upper seat back 1 and the top of the lower seat back 2.

The utility model discloses a tilting mechanism 3 of convertible back of the chair is simple hinge structure, through hinge structure, when the back of the chair 1 and the same upset function of the current dress formula back of the chair of turning over in the realization, still can simplify the structure of the back of the chair, makes the back of the chair have the part few, and the assembly is easier to can reduce enterprise manufacturing cost's advantage.

In order to enable the upper chair back 1 and the lower chair back 2 to be assembled and enable a person to lean normally when the chair is used, further, a first supporting piece for supporting the upper chair back 1 is arranged in the upper chair back 1, and a second supporting piece for supporting the lower chair back 2 is arranged in the lower chair back 2; the lower end of the second support is provided with a mounting 4 for mounting the lower chair back 2 to the chair seat.

Referring to fig. 1 and 3, in the convertible chair back, two first extension rods 5 arranged in parallel are arranged at the bottom of the upper chair back 1, and two second extension rods 6 are arranged at the top of the lower chair back 2; the turnover mechanism 3 further comprises a first structural reinforcing rod 303, a second structural reinforcing rod 304 and a connecting piece 305 which is sleeved on the first structural reinforcing rod 303 and the second structural reinforcing rod 304; the two first extension rods 5 are respectively and rotatably connected with two ends of the first structure reinforcing rod 303; the second structural reinforcing bar 304 is fixedly arranged between the second projecting bars 6.

During actual use, in the process that the upper chair back 1 is turned forwards or gradually returns to the normal use state from the forward turning state, the first extension rod 5 fixedly arranged at the bottom of the upper chair back 1 can rotate by taking the first structure reinforcing rod 303 as an axis, and the first structure reinforcing rod 303 and the second structure reinforcing rod 304 are fixedly arranged above the lower chair back 2 through the connecting piece 305, so that the structural stability of the turnover mechanism 3 during working is improved.

Further, the first extension bar 5 is provided with a positioning bar 7 rotatably connected with the first structure reinforcing bar 303. Meanwhile, positioning holes suitable for inserting the positioning rods 7 are formed in two ends of the first structure reinforcing rod 303.

Further, the bottom of the lower back 2 is provided with a mounting 4 for mounting the lower back 2 to a seat.

Referring to fig. 1 to 3, in another embodiment, the second hinge member 302 is connected to a stop block 8 located below the first hinge member 301; the limiting block 8 is used for limiting the upper chair back 1 which is turned upwards, and meanwhile, in the process that the upper chair back 1 is turned upwards, the first hinge piece 301 rotates clockwise relative to the second hinge piece 302. In this embodiment, with the help of stopper 8, when making last back of the chair 1 upwards overturn to normal use state, first articulated elements 301 can't continue clockwise rotation to play the protection to turnover mechanism 3.

Further, the limiting block 8 is provided with an inclined surface matched with the first hinge member 301. When the limiting block 8 limits the first hinge member 301, the lower end surface of the first hinge member 301 is parallel to and contacts the inclined surface.

Referring to fig. 4, in another embodiment, the convertible chair back further includes an elastic chair back 9 connected to the upper chair back 1 and the lower chair back 2, and the convertible mechanism 3 is disposed in the elastic chair back 9. Through setting up the elasticity back of the chair 9 in this embodiment, can make the back of the chair 1 can normally overturn, and the elasticity back of the chair 9 can separate tilting mechanism 3 with sit upright personnel, promotes the use comfort level of seat when pleasing to the eye.

In summary, the utility model provides a turnover chair back, which realizes the turnover of the upper chair back by arranging a turnover mechanism between the upper chair back and the lower chair back; meanwhile, the turnover mechanism is a simple hinged structure, the structure of the chair back can be simplified while the turnover function of the upper chair back is the same as that of the existing turnover chair back, so that the chair back has the advantages of few parts, easier assembly and capability of reducing the production cost of enterprises.

It should be understood that equivalent alterations and modifications can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept thereof, and all such alterations and modifications should fall within the scope of the appended claims.

Claims

1. A turnover chair back is characterized by comprising an upper chair back, a lower chair back and a turnover mechanism arranged between the upper chair back and the lower chair back; the turnover mechanism comprises a first hinge part and a second hinge part which are hinged with each other; the first hinge piece and the second hinge piece are respectively arranged at the bottom of the upper chair back and the top of the lower chair back.

2. The convertible chair back of claim 1, wherein the bottom of the upper chair back is provided with two first extension bars and the top of the lower chair back is provided with two second extension bars; the turnover mechanism also comprises a first structure reinforcing rod, a second structure reinforcing rod and a connecting piece which is sleeved on the first structure reinforcing rod and the second structure reinforcing rod; the two first extension rods are respectively and rotatably connected with two ends of the first structure reinforcing rod; the second structure reinforcing rod is fixedly arranged between the second extension rods.

3. The convertible chair back of claim 2, wherein the first extension bar is provided with a positioning bar pivotally connected to the first structural reinforcement bar.

4. The convertible chair back of claim 1, wherein a bottom of the lower chair back is provided with a mounting for mounting the lower chair back to the seat.

5. The convertible chair back of claim 1, wherein the second hinge member is connected to a stop block positioned below the first hinge member; the limiting block is used for limiting the upper chair back which turns upwards.

6. The convertible chair back of claim 5, wherein the stop is provided with an inclined surface that engages the first hinge member.

7. The convertible chair back of claim 1, further comprising a flexible chair back that connects the upper and lower chair backs simultaneously, the convertible mechanism being disposed within the flexible chair back.