TWI731718B - Supporting structure of seat back recliner - Google Patents

Abstract

The invention relates to a supporting structure of a seat back recliner. Primarily, a main body and an upper end of two supports are provided with mutually pivoted joints. Furthermore, a lower end of the main body is connected with each of the two supports by a swing arm. Thereby when a user leans back against the main body backwardly, the main body uses an upper pivot point of the support as a rotation point, so that the main body forms a tilt angle. By the traction limit between the lower end of the main body and the swing arm of the support, the main body can maintain a proper reclining angle, so that the user can lie on the main body safely. An elastic section provided on each of two rods at two sides of the main body can make the main body fit and support the user’s waist and back when the user lies on the main body to facilitate sitting comfort.

Description

Chair back tilt support structure

The present invention relates to a chair back tilt support structure, in particular to a chair that can conveniently adjust the chair back to a required tilt angle and can be attached to the waist and back of the user to facilitate riding comfort. Back structure.

By the way, chairs are essential items for people’s daily life. When people ride on the chairs, they tend to lean their backs on the back of the chair. However, the basic angle of the existing chair back remains the same, so it cannot provide the user with a reclining back. support.

However, for users who have to sit on chairs for long periods of time to do work, etc., in addition to basic sitting and reclining functions, the need for reclining functions is also increasing to facilitate the use of chairs when tired. Adjust the back of the chair to the required tilt angle, and use it to lie on the back of the chair for rest, etc. Therefore, the angle adjustment of the back of the chair is a necessary function. Moreover, the existing chair backs are mostly hard backs and lack flexibility. Therefore, when the user leans on the back of the chair, the user’s back is not only easy to feel pain and discomfort, but also difficult to stick to the back of the chair, resulting in long-term It is prone to backaches when riding down.

The reason is that, in view of the fact that the existing chair back structure of the chair still has the above-mentioned shortcomings when it is used and implemented, it is assisted by its years of manufacturing and design experience and knowledge in related fields, and after many ingenuity, research Created the present invention.

The present invention relates to a seat back tilt support structure, and its main purpose is to provide a seat back that can be easily adjusted to the required tilt angle, and can be attached to the waist and back of the user to facilitate riding Comfortable chair back structure.

In order to achieve the above-mentioned implementation objectives, the inventor of the present invention has developed the following chair back tilt support structure, which includes: at least one chair back support, and a first screw joint is provided at the upper end of the chair back support, and the chair back support A first pivot is provided below the first pivoted portion, and the first pivot is pivotally connected to one end of a swing arm; a seat back body includes two first pivots that are arranged longitudinally on the left and right opposite to each other. The rod portion, and the upper and lower sides are opposite to each other horizontally to establish a second rod portion and a third rod portion, and the two ends of the second rod portion and the third rod portion are respectively connected with the two first rod portions, and A hollow space is formed between the two first rod parts, the second rod part and the third rod part, and a fourth rod part is transversely arranged in the hollow space, and the two ends of the fourth rod part are connected with each other. The two first rod parts are connected, and the fourth rod part is provided with at least one second screw connection part to be pivotally connected with the first screw connection part on the at least one seat back bracket through a rotating shaft, At least one second pivot part is provided on the third rod part to be pivotally connected with the other end of the swing arm on the at least one seat back bracket through a pivot, and the rotation shaft is connected to the first rotating part and The second pivoting portion penetrates the pivoting direction, which is the same as the pivoting direction of the first pivot and one end of the swing arm, and the pivoting direction is the same as the pivoting direction of the second pivot and the other end of the swing arm. In addition, an elastic section is formed on each of the two first rod parts, and the elastic section of the two first rod parts is located between the third rod part and the fourth rod part.

The seat back tilting support structure as described above, wherein the two first rod portions of the seat back body are each formed with a section that gradually inclines downward from its upper edge, and one inclines upward from its lower edge The upward inclined section is connected with the elastic section between the downward inclined section and the upward inclined section.

The seat back tilting support structure as described above, wherein the elastic section of the first rod portion of the seat back body is formed with a plurality of slits along the length of the elastic section.

The seat back tilting support structure as described above, wherein the seat back tilting support structure includes two seat back brackets, so that the upper ends of the two seat back brackets are each provided with the first screw connection portion, and the two The seat back bracket is respectively provided with a first pivot portion below its first screw connection portion to be pivotally connected to one end of a swing arm, and two second pivot portions are provided on the fourth rod portion of the seat back body. The screwed parts are pivotally connected to the first screwed parts of the two seatback brackets respectively by a shaft penetrating through them, and two second pivots are provided on the third rod part to respectively connect with the two The other ends of the two swing arms pivoted on the seat back bracket are pivotally connected through the pivot shaft.

Thereby, when the user lies on the seat back body of the present invention and leans backward, the seat back main system will use the pivot point of the upper end of the seat back bracket as the rotation point, so that the seat back body forms a tilt angle. And use the traction limit of the swing arm between the lower end of the seat back body and the seat back bracket, so that the seat back body can maintain a proper tilt angle, so that the user can safely lie on the seat back body, and use the seat back body The elastic section on the two side rods can make the seat back fit and support the user's waist and back when the user lies on the seat back body, so as to facilitate the riding comfort.

1: Chair back bracket

11: The first screw connection part

12: The first pivot

13: swing arm

14: shaft

15: pivot

2: Chair back body

21: The first pole

211: Downdip

212: Updip

213: Elastic segment

214: Ditch

22: second pole

23: third pole

231: Second Pivot

24: hollow interval

25: fourth pole

251: Second screw connection part

3: Chairs

Figure 1: The three-dimensional exploded view of the present invention

Figure 2: A perspective view of the present invention

Figure 3: The use state diagram of the present invention (1)

The fourth figure: the use state diagram of the present invention (two)

Figure 5: The use state diagram of the present invention (3)

In order to enable the technical means of the present invention and the effects it can achieve to have a more complete and clear disclosure, the detailed description is as follows, please refer to the disclosure diagrams and figure numbers: first, please refer to the first figure. Shown is the seat back tilt support structure of the present invention, which mainly includes: at least one seat back support (1). The present invention is provided with two left and right seat back supports (1). (1) A first screw connection part (11) is provided at the upper end, and a first pivot part (12) is provided in the seat back bracket (1) in a suitable position below the first screw connection part (11), and The first pivot (12) is pivotally connected to one end of a swing arm (13); a seat back body (2) includes two first rods (21) set up longitudinally on the left and right opposite to each other, and upper, A second rod part (22) and a third rod part (23) are set up opposite to each other horizontally, and the two ends of the second rod part (22) and the third rod part (23) are respectively connected to the two first rod parts (22) and the third rod part (23). The rods (21) are connected, and the two first rods (21), the second rods (22) and the third rods (23) are jointly surrounded to form a hollow space (24). The hollow section (24) is provided with a fourth rod portion (25) transversely, and the two ends of the fourth rod portion (25) are respectively connected with the two first rod portions (21), and the fourth rod portion ( 25) is provided with at least one second screw connection part (251), the present invention is that the fourth rod part (25) is provided with two left and right second screw connection parts (251), respectively The first screwed parts (11) of the two seat back brackets (1) are pivotally connected through a shaft (14), and at least one second pivot part (231) is provided on the third rod part (23) In the present invention, the third rod portion (23) is provided with two second pivot portions (231) opposite to each other on the left and right, so as to respectively pivotally connect the two swing arms (13) with the two seat back supports (1) The other end is pivotally connected by a pivot (15), and the two first rod portions (21) are each formed with a section (211) that gradually inclines downward from the upper edge thereof, and a downward incline section (211) from the upper edge of the two first rod portions (21). The edge is gradually inclined to the upwardly inclined section (212), and an elastic section (213) is connected between the downwardly inclined section (211) and the upwardly inclined section (212), and the elastic section (213) is curved The elastic section (213) of the two first rod parts (21) is located between the third rod part (23) and the fourth rod part (25), and is on the elastic section (213). A number of slits (214) are formed along its length, so as to generate elasticity through the slits (214).

Accordingly, when assembling is carried out, please refer to the second figure as well, so that the seat back body (2) is positioned in front of the seat back bracket (1), and the seat back body (2) has its fourth rod The two second screw joints (251) provided on the part (25) are pivotally connected to the first screw joints (11) at the upper ends of the two seatback brackets (1) through the shaft (14), and make the There are two second pivots (231) on the third rod (23) of the seat back main body (2) and a swing arm between the two seat back brackets (1) and the first pivot (12) respectively (13) The pivot (15) is used to pass through the pivot connection.

Therefore, please also refer to the third figure. When the user rides on the chair (3) assembled with the back structure of the present invention, lays his back on the back main body (2) and leans back , Please also refer to the fourth figure, the seat back body (2) uses its fourth rod (25) and the upper end of the seat back bracket (1) to pivot at the point of rotation, so that the seat back body (2) ) With the backrest force applied by the user, the required tilt angle appears, please refer to the fifth figure together, and the third rod (23) under the backrest body (2) and the backrest bracket (1) The pivotal connection design of the swing arm (13) is designed to produce a traction limit function for the seat back body (2), so that the seat back body (2) maintains a proper tilt angle to ensure the safety of the user Lie on the back main body (2).

In addition, the design of the elastic section (213) of the two first rods (21) of the seat back body (2) can make the seat back body (2) produce moderate elasticity with the backrest force of the user. In this way, regardless of the user's tilt angle, his waist and back can be completely attached to the seat back body (2) to obtain a comfortable support effect, and avoid the user from sitting on the chair (3) for a long time. It is prone to backaches on the back.

The foregoing embodiments or drawings do not limit the implementation of the seat back reclining support structure of the present invention. Any appropriate changes or modifications made by those with ordinary knowledge in the technical field should be regarded as not departing from the patent scope of the present invention.

It can be seen from the above structure and implementation that the present invention has the following advantages:

1. The seat back tilting support structure of the present invention is pivotally connected between the seat back body and the seat back bracket by a rotating part, thereby enabling the seat back body to present the required tilt angle with the backrest force of the user In addition, the seat back body and the lower end of the seat back bracket are pivotally connected by a swing arm, and the seat back body has a traction limit function, so that the user can safely lie on the seat back body.

2. The seat back tilting support structure of the present invention is attached to the seat back body. The two side rods of the seat back body are each formed with an elastic section, so that the seat back body can produce elastic deformation function. Here, no matter the user is at any tilt angle, The main body of the seat back can be attached to the waist and back of the user to facilitate riding comfort.

In summary, the embodiments of the present invention can indeed achieve the expected effects, and the specific structure disclosed by it has not been seen in similar products, nor has it been disclosed before the application. It is in full compliance with the provisions of the Patent Law and Requirement, Yan filed an application for a patent for invention in accordance with the law, and pleaded for favor of review and granting a patent, which would be more virtuous.

1: Chair back bracket

11: The first screw connection part

12: The first pivot

13: swing arm

14: shaft

15: pivot

2: Chair back body

21: The first pole

211: Downdip

212: Updip

213: Elastic segment

214: Ditch

22: second pole

23: third pole

231: Second Pivot

24: hollow interval

25: fourth pole

251: Second screw connection part

Claims (4)

A chair back tilting support structure includes: at least one chair back bracket, a first screw joint portion is provided at the upper end of the chair back bracket, and a first screw joint portion is provided on the chair back bracket below the first screw joint portion A pivot, and the first pivot is pivotally connected to one end of a swing arm; a chair back body includes two first rods that are set up in a longitudinal direction relative to the left and right, and are set up in a horizontal direction relative to the upper and lower sides. A second rod part and a third rod part, and the two ends of the second rod part and the third rod part are respectively connected with the two first rod parts, and the two first rod parts and the second rod part A hollow space is formed between the third rod and the third rod part, and a fourth rod part is transversely arranged in the hollow space, and the two ends of the fourth rod part are connected with the two first rod parts respectively. At least one second screw connection portion is provided on the fourth rod portion to be pivotally connected with the first screw connection portion on the at least one seat back support through a rotating shaft, and at least one second screw connection portion is provided on the third rod portion. The second pivot part is pivotally connected with the other end of the swing arm on the at least one seat back bracket through a pivot, and the rotation shaft penetrates the first and second rotation parts in a pivot connection direction. It is set up in the same direction as the pivoting direction of the first pivot and one end of the swing arm, and the pivot is set in the same direction as the pivoting direction of the second pivot and the other end of the swing arm, and the other is on the two first rods Each is formed with an elastic section, and the elastic section of the two first rod parts is located between the third rod part and the fourth rod part. The seat back tilting support structure according to claim 1, wherein the two first rod portions of the seat back main body are each formed with a section which is gradually inclined downwardly from its upper edge, and a section which is gradually inclined downwardly from its lower edge. The up-dip section is inclined upward, and the elastic section is connected between the down-dip section and the up-dip section. The seat back tilting support structure according to claim 2, wherein the elastic section of the first rod of the seat back body is formed with a plurality of slits along the length thereof. The seat back tilting support structure according to claim 1, wherein the seat back tilting support structure includes two seat back brackets, so that the upper ends of the two seat back brackets are each provided with the first screw joint, and The two seat back brackets are each provided with a first pivot part under the first screw joint part to be pivotally connected to one end of a swing arm, and two seat back frames are provided on the fourth rod part of the seat back body. The second pivoting portion is pivotally connected to the first pivoting portion of the two seat back brackets by a shaft penetrating each, and two second pivoting portions are provided on the third rod portion to respectively The other ends of the two swing arms pivotally connected with the two seat back brackets are pivotally connected through a pivot shaft.

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