CN219270528U

CN219270528U - Backrest adjusting structure and seat

Info

Publication number: CN219270528U
Application number: CN202320415741.0U
Authority: CN
Inventors: 李骏超
Original assignee: Zhejiang Xiaoyuer Industry And Trade Co ltd
Current assignee: Zhejiang Xiaoyuer Industry And Trade Co ltd
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2023-06-30
Anticipated expiration: 2033-02-28

Abstract

The utility model discloses a backrest adjusting structure and a seat, comprising: the surface of the shell is provided with a mounting opening, the inner cavity is penetrated and inserted with a guide rod, one end of the guide rod is provided with an adjusting knob, the guide rod is provided with two sliding moving seats, and the moving seats penetrate through the mounting opening; the two adjusting arms are distributed in a V shape, one end of each adjusting arm is respectively and rotatably connected with the movable seat on the same side, and the other end of each adjusting arm is rotatably connected with the fixed seat; the movable seat synchronously moves on the guide rod to approach or depart from the guide rod, so that the included angle of the two adjusting arms is changed to push the shell to move; according to the utility model, the angle between the two adjusting arms is changed, so that the shell is driven to move forwards or pull back backwards, the position of the backrest can be adjusted timely according to the requirement, the adjusting range of the backrest is large, the back of a person can be better attached to the backrest, and the device is more friendly to people with lower height and has a good using effect.

Description

Backrest adjusting structure and seat

Technical Field

The utility model relates to the technical field of backrest adjustment, in particular to a backrest adjustment structure and a seat.

Background

Most of the seat backs in the current market can adjust the position according to the need, the backrest angle is generally adjusted in a mode of rotating an axle center, the moving range of the backrest is smaller, if people with lower heights are seated in normal postures, the backrest can only be adjusted in a rotating mode, but cannot be adjusted in a horizontal position, so that the back of the person cannot be well attached to the backrest, and the comfort is not high.

Disclosure of Invention

The utility model mainly aims to provide a backrest adjusting structure and a seat, and aims to solve the existing technical problems.

To achieve the above object, the present utility model provides a backrest adjusting structure comprising:

the surface of the shell is provided with a mounting opening, the inner cavity is penetrated and inserted with a guide rod, one end of the guide rod is provided with an adjusting knob, the guide rod is provided with two sliding moving seats, and the moving seats penetrate through the mounting opening;

the two adjusting arms are distributed in a V shape, one end of each adjusting arm is respectively and rotatably connected with the movable seat on the same side, and the other end of each adjusting arm is rotatably connected with the fixed seat;

the movable seat synchronously moves on the guide rod to approach or depart from the guide rod, so that the included angle of the two adjusting arms changes to push the shell to move.

Further, two sections of external threads which are symmetrically distributed are arranged on the surface of the guide rod, a driving block sleeved on the guide rod is arranged on the movable seat, and an internal thread matched with the external thread is arranged on the inner surface of the driving block;

and the guide rod is rotated, and the two driving blocks are contacted with threads with different directions, so that the two movable seats are synchronously close to or far away from each other.

Further, a clamping block is embedded on the surface of the guide rod at equal intervals, one end of the clamping block is connected with a spring arranged in the inner cavity of the guide rod, the other end of the clamping block is in an arc surface structure, the spring is arranged on a built-in rod arranged in the inner cavity of the guide rod in a sliding manner, and the end part of the built-in rod is connected with an adjusting knob;

the movable seat is provided with a driving block sleeved on the guide rod, and the driving block is provided with a clamping groove matched with the clamping block.

The built-in rod is pulled, the clamping block is separated from the driving block, and the movable seats synchronously move on the guide rod to approach or depart from the guide rod, so that the two movable seats synchronously approach or depart from the guide rod.

Further, the surface of the built-in rod is provided with a lug close to the adjusting knob, and in an initial state, the distance between the lug and the inner cavity of the guide rod close to the end of the adjusting knob is smaller than the distance between two adjacent clamping blocks.

Further, the connecting ends of the two adjusting arms and the fixing seat are provided with meshed parts which are meshed with each other.

The seat comprises a backrest, a bracket and a cushion, and further comprises the backrest adjusting structure, wherein the backrest adjusting structure is connected with the backrest and the bracket.

The beneficial effects of the utility model are as follows:

according to the utility model, the angle between the two adjusting arms is changed, so that the shell is driven to move forwards or pull back backwards, the position of the backrest can be adjusted timely according to the requirement, the adjusting range of the backrest is large, the back of a person can be better attached to the backrest, and the device is more friendly to people with lower height and has a good using effect.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a cover plate removed from a housing according to the present utility model;

FIG. 3 is a schematic diagram of an embodiment of the present utility model;

FIG. 4 is a schematic diagram of another embodiment of the present utility model;

FIG. 5 is a schematic view of the structure of the engaging portion of the present utility model;

fig. 6 is a schematic view of the seat structure of the present utility model.

Reference numerals illustrate:

100. a housing; 1001. a mounting port; 101. a guide rod; 1011. a clamping block; 1012. a spring; 1013. a built-in rod; 1014. a bump; 102. a movable seat; 103. a driving block; 104. an adjustment knob; 200. an adjusting arm; 2001. an engagement portion; 201. a fixing seat.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. Embodiments and features of embodiments in this application may be combined with each other without conflict. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, "a plurality of" means two or more. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary that the combination of the technical solutions should be regarded as not existing when the combination of the technical solutions contradicts or cannot be realized on the basis of the realization of those skilled in the art.

Referring to fig. 1 and 2, a backrest adjusting structure of the present utility model includes:

the shell 100 is provided with a mounting opening 1001 on the surface, a guide rod 101 is inserted in the inner cavity, one end of the guide rod 101 is provided with an adjusting knob 104, two slidable movable seats 102 are arranged on the guide rod 101, and the movable seats 102 penetrate through the mounting opening 1001;

the two adjusting arms 200 are distributed in a V shape, one end of each adjusting arm 200 is respectively and rotatably connected with the movable seat 102 on the same side, and the other end of each adjusting arm 200 is rotatably connected with the fixed seat 201;

the movable seat 102 moves closer to or away from the guide rod 101 synchronously, so that the included angle of the two adjusting arms 200 changes to push the housing 100 to move.

This application drives shell 100 to move forward or pull back backward through changing the angle between two adjusting arms 200, can adjust the position of back in good time as required, and the accommodation of back is big for the laminating back that the back of taking the people can be better, especially more friendly to the lower crowd of height, excellent in use effect.

The present application provides two embodiments of the movement of the moving seat 102 on the guide bar 101, see in particular below:

embodiment one: referring to fig. 2 and 3, the surface of the guide rod 101 is provided with two sections of external threads which are symmetrically distributed, the movable seat 102 is provided with a driving block 103 sleeved on the guide rod 101, and the inner surface of the driving block 103 is provided with internal threads matched with the external threads;

the guide rod 101 is rotated, and the two driving blocks 103 are contacted with threads with different directions, so that the two movable seats 102 are synchronously close to or far away from each other.

Under this embodiment, in the adjustment process, the user rotates the adjustment knob 104 to drive the guide rod 101 to rotate, and because the symmetrical external threads are arranged on the adjustment knob 104, the driving blocks 103 on two sides are in contact with different external threads, so that the two driving blocks 103 synchronously move or relatively move in opposite directions, when the two driving blocks 103 are close, the included angle between the two adjusting arms 200 becomes smaller, the housing 100 is pushed away, otherwise, the housing 100 is pulled back towards the near, the adjustment process is realized, and the housing 100 can be automatically locked and is in a static state after adjustment because the threads themselves have a limiting function in the direction perpendicular to the trend direction of the threads.

Embodiment two: referring to fig. 4, a clamping block 1011 is embedded on the surface of the guide rod 101 at equal intervals, one end of the clamping block 1011 is connected with a spring 1012 arranged in the inner cavity of the guide rod 101, the other end of the clamping block 1012 is in an arc surface structure, the spring 1012 is installed on an internal rod 1013 arranged in the inner cavity of the guide rod 101 in a sliding manner, and the end of the internal rod 1013 is connected with an adjusting knob 104; one end of the guide rod 101 is movably inserted into the adjusting knob 104.

The movable seat 102 is provided with a driving block 103 sleeved on the guide rod 101, and the driving block 103 is provided with a clamping groove matched with the clamping block 1011.

The built-in lever 1013 is pulled, the clamping block 1011 is separated from the driving block 103, and the moving seat 102 moves on the guide lever 101 to approach or depart synchronously, so that the two moving seats 102 approach or depart synchronously.

In this embodiment, in the adjusting process, the adjusting knob 104 is pulled outwards to drive the built-in rod 1013 to move in the guide rod 101, so as to synchronously drive the uniformly arranged clamping blocks 1011 to be separated from the driving block 103, at this time, the moving seat 102 is in an unlocking state, the housing 100 can be moved in a required direction, the included angle of the adjusting arm 200 is reduced, the housing 100 is pulled far, otherwise, the housing 100 is pulled close, and after the adjustment is completed, the adjusting knob 104 is pulled back, so that the built-in rod 1013 is reset, and the adjusted moving seat 102 is locked by the clamping blocks 1011.

Preferably, referring to fig. 4, a protrusion 1014 near the adjusting knob 104 is provided on the surface of the built-in rod 1013, and in the initial state, the distance between the protrusion 1014 and the end of the inner cavity of the guiding rod 101 near the adjusting knob 104 is smaller than the distance between two adjacent clamping blocks 1011. By means of the arrangement, the maximum moving distance can be limited in the process of pulling the built-in rod 1013 outwards, and the problem that unsuccessful unlocking of the movable seat 102 occurs due to moving transposition between the clamping blocks 1011 is avoided.

Preferably, referring to fig. 5, the connecting ends of the two adjusting arms 200 and the fixing base 201 are provided with engaging portions 2001 which are engaged with each other. Specifically, the engagement portion 2001 is a tooth provided along the periphery of the upper edge of the end portion of the adjustment arm 200; by the arrangement, the synchronism of the two adjusting arms 200 can be kept during the rotation of the two adjusting arms in the adjusting process, and the problem that the backrest connected with the two adjusting arms is deviated due to the relative sliding is avoided.

Referring to fig. 6, the seat comprises a backrest, a bracket, a cushion, and a backrest adjusting structure as described above, wherein the backrest adjusting structure is connected with the backrest and the bracket.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. A backrest adjustment mechanism, comprising:

the shell (100) is provided with a mounting opening (1001) on the surface, a guide rod (101) is inserted into the inner cavity, an adjusting knob (104) is arranged at one end of the guide rod (101), two sliding moving seats (102) are arranged on the guide rod (101), and the moving seats (102) penetrate through the mounting opening (1001);

the device comprises two adjusting arms (200) and a fixed seat (201), wherein the two adjusting arms (200) are distributed in a V shape, one end of each adjusting arm (200) is respectively and rotatably connected with the movable seat (102) on the same side, and the other end of each adjusting arm is rotatably connected with the fixed seat (201);

the movable seat (102) synchronously moves on the guide rod (101) to be close to or far away from the guide rod, so that the included angle of the two adjusting arms (200) is changed to push the shell (100) to move.

2. A backrest adjustment mechanism as defined in claim 1, wherein: two sections of external threads which are symmetrically distributed are arranged on the surface of the guide rod (101), a driving block (103) sleeved on the guide rod (101) is arranged on the movable seat (102), and an internal thread matched with the external thread is arranged on the inner surface of the driving block (103);

and the guide rod (101) is rotated, and the two driving blocks (103) are contacted with threads with different directions, so that the two movable seats (102) are synchronously close to or far away from each other.

3. A backrest adjustment mechanism as defined in claim 1, wherein: a clamping block (1011) is embedded on the surface of the guide rod (101) at equal intervals, one end of the clamping block (1011) is connected with a spring (1012) arranged in the inner cavity of the guide rod (101), the other end of the clamping block is in an arc surface structure, the spring (1012) is arranged on an embedded rod (1013) arranged in the inner cavity of the guide rod (101) in a sliding manner, and the end part of the embedded rod (1013) is connected with an adjusting knob (104);

a driving block (103) sleeved on the guide rod (101) is arranged on the movable seat (102), and a clamping groove matched with the clamping block (1011) is formed in the driving block (103);

the built-in rod (1013) is pulled, the clamping block (1011) is separated from the driving block (103), and the movable seat (102) synchronously moves on the guide rod (101) to be close to or far away from, so that the two movable seats (102) synchronously move to be close to or far away from.

4. A backrest adjustment mechanism as claimed in claim 3, wherein: the surface of the built-in rod (1013) is provided with a bump (1014) close to the adjusting knob (104), and in an initial state, the distance between the bump (1014) and the end, close to the adjusting knob (104), of the inner cavity of the guide rod (101) is smaller than the distance between two adjacent clamping blocks (1011).

5. A backrest adjustment mechanism as claimed in any one of claims 1 to 3, wherein: the connecting ends of the two adjusting arms (200) and the fixed seat (201) are provided with meshed parts (2001) which are meshed with each other.

6. The utility model provides a seat, includes back, support and cushion, its characterized in that: further comprising a back adjustment structure according to any one of claims 1-5, said back adjustment structure connecting the back and the bracket.