CN220917011U

CN220917011U - Gravity four-linkage seat structure

Info

Publication number: CN220917011U
Application number: CN202322655506.3U
Authority: CN
Inventors: 丁文婷
Original assignee: Hangzhou Learning Time Technology Co ltd
Current assignee: Hangzhou Learning Time Technology Co ltd
Priority date: 2023-09-28
Filing date: 2023-09-28
Publication date: 2024-05-10
Anticipated expiration: 2033-09-28

Abstract

The utility model relates to the technical field of child seats, in particular to a gravity four-linkage seat structure, which comprises: the base fixing shell is provided with an arc-shaped groove, and a second driven piece is fixedly connected in the base fixing shell; the lower end of the chair back support is fixedly provided with a first driven piece which is fixedly connected with the inside of the chair back support; the bracket connecting piece is internally provided with a transmission piece, and the transmission piece is rotationally connected with the bracket connecting piece; the base body is in sliding connection with the base fixing shell, the end part of the base body is hinged with a driving piece, and the driving piece is hinged with the bracket connecting piece; the utility model presses the base body downwards through a human body, drives the end part of the driving part to move anticlockwise in the arc-shaped groove, drives the bracket connecting part to rotate anticlockwise, and then enables the first driven part to rotate clockwise, so that the chair back body can be kept vertical while leaning against the back.

Description

Gravity four-linkage seat structure

Technical Field

The utility model relates to the technical field of child seats, in particular to a gravity four-linkage seat structure.

Background

The child seat is a device which is frequently used by children on a growing road, and has great influence on the learning posture of the children during daily learning;

The children sitting when current children's seat used stand on the seat body, adjust the height and the angle of seat through manual regulation's mode, but along with children's age growth, height and weight also can change, current device hardly carries out the balanced support to the back according to children's weight at the use, lead to producing relatively poor supporting effect, especially use inadaptation for a long time and lead to study distraction in study, consequently need a gravity four-linkage seat structure, can adjust suitable comfort level according to user's height size and weight.

Disclosure of utility model

The utility model aims to provide a gravity four-linkage seat structure, so that the seat provided by the utility model can be used for carrying out back balance support on children with different heights and weights through gravity adjustment, and the defects of the prior art and the technical requirements which cannot be met are overcome.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a gravity four-linkage seat structure comprising:

the base fixing shell is provided with an arc-shaped groove, and a second driven piece is fixedly connected in the base fixing shell;

The seat back support is characterized in that a first driven piece is fixedly arranged at the lower end of the seat back support and fixedly connected to the inside of the seat back support;

The top end of the bracket connecting piece is rotationally connected with the chair back bracket, and the bottom end of the bracket connecting piece is rotationally connected with the base fixing shell;

The base body is in sliding connection with the base fixing shell, the end part of the base body is hinged with a driving piece, and the driving piece is hinged with the bracket connecting piece;

The chair back body is in sliding connection with the chair back support;

a transmission part is arranged in the bracket connecting piece and is rotationally connected with the bracket connecting piece;

One end of the driving piece, which is close to the second driven piece, is slidably connected in the arc-shaped groove, one end of the transmission piece is in meshed connection with the second driven piece, and the other end of the transmission piece is in meshed connection with the first driven piece.

Preferably, the base fixed shell is provided with a limiting groove, a movable connecting rod is obliquely arranged in the limiting groove, the movable connecting rod is rotationally connected with the limiting groove, and the movable connecting rod is in sliding connection with the limiting groove.

Preferably, the lower extreme of base body is provided with a plurality of base moving parts, the one end and the base body fixed connection of base moving part, the other end and the movable connecting rod of base moving part are articulated.

Preferably, the base fixing shell is provided with a base connecting piece;

the movable connecting rod is provided with a connecting groove;

the base connecting piece is connected with the connecting groove in a sliding manner, and the base connecting piece is connected with the connecting groove in a rotating manner.

Preferably, the chair back support is provided with a chair back lifting assembly, and the chair back body is in sliding connection with the chair back support through the chair back lifting assembly.

Preferably, the chair back lifting assembly includes:

the lifting limiting cavity is arranged on the chair back support;

the lifting moving part is arranged in the lifting limiting cavity and is in sliding connection with the lifting limiting cavity.

Preferably, the lifting moving part is provided with:

The positioning ball is clamped with the lifting limiting cavity;

and the adjusting button is movably connected with the positioning ball and used for controlling the positioning ball to stretch out and draw back on the lifting moving part.

Preferably, the first follower and the second follower are provided in the form of gears, and the transmission member is provided in the form of a bar.

Preferably, the base connecting piece is arranged on the inner side wall of the limiting groove.

Preferably, the seat and the reset rod are arranged on the base body, the base body is fixedly connected with the seat, and the reset rod is hinged with the base body.

Compared with the prior art, the utility model has the beneficial effects that:

1. The application is provided with the driving piece, the first driven piece, the transmission piece, the second driven piece and the arc-shaped groove, the driving piece is hinged with the base body, in the use process, the base body is pressed down by the gravity of a human body, the end part of the driving piece is driven to move clockwise in the arc-shaped groove, so that the bracket connecting piece is driven to rotate anticlockwise, namely move towards the direction close to the back of the human body, the transmission piece is driven by the bracket connecting piece to move along with the movement, but the bottom of the transmission piece is meshed and connected with the second driven piece, the second driven piece is not moved, so that the transmission piece also rotates anticlockwise, and the first driven piece is meshed and connected with the transmission piece, so that the chair back support rotates clockwise, and the chair back support is ensured to be vertical when the bracket connecting piece drives the whole chair back support to be close to the back, and the chair back body can still realize balanced support on the back of the human body under the guarantee of users with different weights in use.

2. The application is provided with the base movable piece and the movable connecting rod, and the driving force is provided for the driving rod by converting the gravity of a human body into displacement, and the inclined arrangement of the movable connecting rod can enable the human body to move downwards and simultaneously move towards the chair back body, so that the fit between the back of the human body and the chair back body is further realized.

3. The chair back lifting assembly is provided with the chair back lifting assembly, lifting of the chair back body can be completed through the arrangement amount of the lifting assembly, so that the chair back body is suitable for leaning on the back of users with different heights, and the arrangement of the adjusting button and the positioning ball can realize convenient adjustment and stop along with adjustment, and is convenient to operate.

Drawings

Fig. 1 is a perspective view of a gravity four-linkage seat structure of the present utility model.

Fig. 2 is a cross-sectional view of a gravity four-linkage seat structure of the present utility model.

Fig. 3 is a right side view of a gravity four-linkage seat structure of the present utility model.

Fig. 4 is a rear view of a gravity four-linkage seat structure of the present utility model.

Fig. 5 is a left side view of a gravity four-linkage seat structure of the present utility model.

Fig. 6 is an exploded view of a gravity four-linkage seat structure according to the present utility model.

Fig. 7 is a perspective view of a seatback lifter of a gravity four-linkage seat structure of the present utility model.

In the figure: 1. a base fixing case; 2. a bracket connection; 3. a chair back bracket; 4. a base body; 5. a limit groove; 6. a base movable member; 7. a movable connecting rod; 8. a driving member; 9. a transmission member; 10. a second follower; 11. a first follower; 12. a seat; 13. a chair back lifting assembly; 14. a chair back body; 15. a lifting limiting cavity; 16. lifting the movable member; 17. positioning the ball; 18. an adjustment button; 19. an arc-shaped groove.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to fig. 1 to 7 of the embodiments of the present utility model, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. 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.

In the description of the present utility model, it is to be understood that: the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying 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 one or more such feature.

Referring to FIGS. 1-7, embodiments of the present utility model

Examples:

as shown in fig. 2 and 5: a gravity four-linkage seat structure comprising:

The base fixing shell 1 is provided with an arc-shaped groove 19, and a second driven piece 10 is fixedly connected in the base fixing shell 1;

The seat back support 3, wherein a first driven piece 11 is fixedly arranged at the lower end of the seat back support 3, and the first driven piece 11 is fixedly connected to the inside of the seat back support 3;

The top end of the bracket connecting piece 2 is rotationally connected with the chair back bracket 3, and the bottom end of the bracket connecting piece 2 is rotationally connected with the base fixing shell 1;

The base body 4 is in sliding connection with the base fixing shell 1, a driving piece 8 is hinged to the end portion of the base body 4, and the driving piece 8 is hinged to the support connecting piece 2;

a seatback body 14, the seatback body 14 being slidably connected to the seatback holder 3;

a transmission piece 9 is arranged in the bracket connecting piece 2, and the transmission piece 9 is rotationally connected with the bracket connecting piece 2;

One end of the driving piece 8, which is close to the second driven piece 10, is slidably connected in the arc-shaped groove 19, one end of the transmission piece 9 is in meshed connection with the second driven piece 10, and the other end of the transmission piece 9 is in meshed connection with the first driven piece 11.

It should be noted that, the second driven member 10, the transmission member 9, and the first transmission member 9 are all disposed inside the support connecting member, the connection between the three members is an internal connection, and the rotational connection between the base fixing housing 1, the support connecting member 2, and the seatback frame 3 is an external integral connection, and there is a necessary connection in the connection relationship with the internal structure thereof, that is, the connection of the external integral connection is not absolutely realized by disposing the components involved in the internal connection;

When the chair back support device is used, the end part of the driving piece 8 is driven to move clockwise in the arc-shaped groove 19 due to the gravity of a human body, so that the bracket connecting piece 2 is driven to rotate anticlockwise, namely, move towards the direction close to the back of the human body, and the driving piece 9 moves along with the movement under the driving of the bracket connecting piece 2, but the bottom of the driving piece 9 is meshed with the second driven piece 10, the second driven piece 10 does not move, so that the driving piece 9 also rotates anticlockwise, and the first driven piece 11 is meshed with the driving piece 9, so that the chair back support 3 rotates clockwise, the chair back support 3 is ensured to be vertical when the bracket connecting piece 2 drives the whole chair back support 3 to approach the back, so that when different weight users use, the chair back body 14 still can ensure balanced support on the back of the human body in a vertical state, and the hinged arrangement is realized, in order to enable the transmission to be more flexible, and the influence on the driving piece 8 is further avoided by the displacement in the horizontal direction of the base body 4 due to the rotation capacity of the hinge, so that the influence on the rotation direction of the bracket connecting piece 2 is further avoided, and the chair back support 14 is ensured to realize smooth and tight and leaning against the back of the human body through the whole body;

The arc groove 19 is provided, because, when the base body 4 moves downwards to the right, there is a process of moving to the right, that is, a process of moving to the position close to the chair back body 14, if the arc groove 19 is not added to limit the movement of the end part of the driving piece 8 as a whole, the movement of the end part of the driving piece 8 can generate different movement directions according to the starting position of the driving piece 8, and even the possibility of clockwise movement exists, so that in order to improve the fault tolerance and the certainty, the arc groove 19 is provided to limit the end part of the driving piece, and the driving piece is ensured to move anticlockwise under the drive of the movement of the base body 4 downwards to the right.

As shown in fig. 2 and 5: the base fixed shell 1 is provided with a limit groove 5, a movable connecting rod 7 is obliquely arranged in the limit groove 5, the movable connecting rod 7 is rotationally connected with the limit groove 5, and the movable connecting rod 7 is in sliding connection with the limit groove 5.

The sliding connection between the base body 4 and the base fixing shell 1 is specifically a sliding connection in both the vertical direction and the horizontal direction, that is, the base body 4 can slide in both the horizontal direction and the vertical direction relative to the base fixing shell 1, that is, the sliding connection between the two is realized through the connection relationship between the movable connecting rod 7 and the limiting groove 5.

As shown in fig. 2 and 5: the lower extreme of base body 4 is provided with a plurality of base moving parts 6, the one end and the base body 4 fixed connection of base moving part 6, the other end and the movable connecting rod 7 of base moving part 6 are articulated.

When the chair is used, the base movable piece 6 and the movable connecting rod 7 are arranged, the gravity of a human body is converted into displacement, driving force is provided for the driving rod, and the inclined arrangement of the movable connecting rod 7 can enable the human body to move downwards and simultaneously can move towards the chair back body 14, so that the fit between the back of the human body and the chair back body 14 is further realized.

As shown in fig. 2 and 5: a base connecting piece is arranged on the base fixing shell 1;

A connecting groove is formed in the movable connecting rod 7;

When the movable connecting rod is used, the arrangement of the connecting grooves can compensate the displacement of the base body 4 in the vertical direction, the displacement of the base body 4 in the vertical direction is realized by the rotation of the movable connecting rod 7, and meanwhile, the rotation space of the movable connecting rod 7 is reduced by the rotation radius of the small movable connecting rod 7, so that the whole process is more rapid, and meanwhile, the rotation amplitude of the base body 4 is reduced.

As shown in fig. 1-5: the chair back support 3 is provided with a chair back lifting assembly 13, and the chair back body 14 is in sliding connection with the chair back support 3 through the chair back lifting assembly 13.

The chair back lifting assembly 13 is arranged to enable the chair back body 14 to tightly lean against the backs of users with different heights. The adaptability of the application is improved.

As shown in fig. 1-5: the seatback elevating assembly 13 includes:

The lifting limiting cavity 15 is formed in the chair back bracket 3;

The lifting moving part 16 is arranged in the lifting limiting cavity 15, and the lifting moving part 16 is in sliding connection with the lifting limiting cavity 15.

When the chair back body 14 is used, the lifting adjustment of the chair back body 14 is realized by the sliding connection of the lifting movable piece 16 and the lifting limiting cavity 15, and the lifting movable piece 16 is limited in the lifting limiting cavity 15, so that the sliding stability is ensured.

As shown in the figure: the lifting moving part 16 is provided with:

The positioning ball 17 is clamped with the lifting limiting cavity 15;

And the adjusting button 18 is movably connected with the positioning ball 17 and is used for controlling the expansion and contraction of the positioning ball 17 on the lifting movable piece 16.

When the chair back 14 is used, the locking after the chair back 14 is lifted is realized through the arrangement of the adjusting button and the positioning ball 17, so that the chair back 14 can be adjusted in multiple gears, the chair back 14 can be adjusted along with the adjustment and the stop, the operation is more convenient, and the stability after the adjustment is ensured.

As shown in fig. 2 and 5: the first follower 11 and the second follower 10 are provided in the form of gears and the transmission member 9 is provided in the form of a bar.

When in use, teeth matched with the gears are arranged at the two ends of the strip-shaped piece, the purpose of arranging the transmission piece 9 into the strip-shaped piece is to reduce the occupied space during transmission, and the purpose of the second driven piece 109 is to provide a fulcrum for the transmission piece 9.

As shown in fig. 2: the base connecting piece is arranged on the inner side wall of the limit groove 5.

Specifically, so set up, can guarantee that base body 4 can be in the in-process that descends can be stable descend in spacing groove 5 to guarantee the steady support to base body 4.

The seat 12 and the reset rod are arranged on the base body 4, the base body 4 is fixedly connected with the seat 12, and the reset rod is hinged with the base body 4.

Specifically, the reset lever is set to be a pneumatic telescopic lever, and the articulated setting is in order to adapt to the displacement that the base body 4 descends and also moves to being close to the chair back body 14 side, avoids its displacement in the horizontal direction to make the reset lever buckle, and the reset lever can guarantee simultaneously that the human body can reset to original state after leaving the seat 12 to guarantee the use of next user.

Working principle: firstly, the positioning ball 17 is contacted and clamped with the inner side wall of the lifting limiting cavity 15 through the adjusting button 18, then the height of the chair back body 14 is adjusted according to the height of a user, after adjustment, the adjusting button is released to enable the positioning ball 17 to be clamped with the inner side wall of the lifting limiting cavity 15 again, the adjustment of the height of the chair back body 14 is completed, when a human body sits on the chair 12, the base body 4 has a downward movement trend due to the gravity of the human body, but due to the inclined arrangement of the movable connecting rod 7 and the arrangement of the connecting groove, the downward movement trend is converted into the actual displacement formed by the rotation and the sliding connection of the movable connecting rod 7, the reset rod is compressed, and as shown in figure 2, the movable connecting rod 7 rotates clockwise, the process brings the base body 4 to move to the right lower part in figure 2, and drives the driving piece 8 to rotate anticlockwise, and simultaneously its tip removes anticlockwise along the orbit of arc groove 19 to drive support connecting piece 2 anticlockwise rotation, move to the direction that is close to the human back, and drive under support connecting piece 2 drive driving piece 9 follow and remove, but because the bottom of driving piece 9 is connected with the meshing of second follower 10, and the second follower 10 is motionless, lead to driving piece 9 also anticlockwise rotation, because first follower 11 is connected with driving piece 9 meshing, so back of the chair support 3 clockwise rotation, when realizing that support connecting piece 2 drive back of the chair support 3 is whole to be close to the back, guarantee back of the chair support 3 vertical, in order to realize when different weight user uses, back of the chair body 14 still can realize the balanced support to the human back under the assurance vertical state, after the use, the extension of reset lever resets, base body 4 resets.

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to specific embodiments, and that the embodiments described in the examples can be combined as appropriate to form other embodiments that will be understood by those skilled in the art.

Claims

1. A gravity four-linkage seat structure, comprising:

The base fixing shell (1), an arc-shaped groove (19) is formed in the base fixing shell (1), and a second driven piece (10) is fixedly connected in the base fixing shell (1);

The seat back support (3), the lower end of the seat back support (3) is fixedly provided with a first driven piece (11), and the first driven piece (11) is fixedly connected in the seat back support (3);

the seat back support comprises a support connecting piece (2), wherein the top end of the support connecting piece (2) is rotationally connected with a seat back support (3), and the bottom end of the support connecting piece (2) is rotationally connected with a base fixing shell (1);

The base comprises a base body (4), wherein the base body (4) is in sliding connection with a base fixing shell (1), a driving piece (8) is hinged to the end part of the base body (4), and the driving piece (8) is hinged to a bracket connecting piece (2);

the chair back body (14), the chair back body (14) is connected with the chair back bracket (3) in a sliding way;

A transmission part (9) is arranged in the bracket connecting piece (2), and the transmission part (9) is rotationally connected with the bracket connecting piece (2);

One end of the driving piece (8) close to the second driven piece (10) is slidably connected in the arc-shaped groove (19), one end of the transmission piece (9) is in meshed connection with the second driven piece (10), and the other end of the transmission piece (9) is in meshed connection with the first driven piece (11).

2. The gravity four-linkage seat structure according to claim 1, wherein a limiting groove (5) is formed in the base fixing shell (1), a movable connecting rod (7) is obliquely arranged in the limiting groove (5), the movable connecting rod (7) is rotationally connected with the limiting groove (5), and the movable connecting rod (7) is slidably connected with the limiting groove (5).

3. The gravity four-linkage seat structure according to claim 2, wherein a plurality of base movable pieces (6) are arranged at the lower end of the base body (4), one end of each base movable piece (6) is fixedly connected with the base body (4), and the other end of each base movable piece (6) is hinged with the movable connecting rod (7).

4. A gravity four-linkage seat structure according to claim 3, wherein the base fixing shell (1) is provided with a base connecting piece;

A connecting groove is formed in the movable connecting rod (7);

5. A gravity four-linkage seat structure according to claim 1, 2, 3 or 4, wherein the seat back support (3) is provided with a seat back lifting assembly (13), and the seat back body (14) is slidably connected with the seat back support (3) through the seat back lifting assembly (13).

6. A gravity four-linkage seat structure according to claim 5, wherein the seat back lifting assembly (13) comprises:

The lifting limiting cavity (15) is formed in the chair back support (3);

The lifting moving part (16), the lifting moving part (16) is arranged in the lifting limiting cavity (15), and the lifting moving part (16) is in sliding connection with the lifting limiting cavity (15).

7. The gravity four-linkage seat structure according to claim 6, wherein the lifting moving member (16) is provided with:

The positioning ball (17) is clamped with the lifting limiting cavity (15);

The adjusting button (18), the adjusting button (18) is movably connected with the positioning ball (17) and used for controlling the expansion and contraction of the positioning ball (17) on the lifting moving part (16).

8. A gravity four-linkage seat structure according to claim 1, 2, 3, 4, 6 or 7, characterized in that the first follower (11) and the second follower (10) are provided in the form of gears and the transmission (9) is provided in the form of a bar.

9. The gravity four-linkage seat structure according to claim 4, wherein the base connecting piece is arranged on the inner side wall of the limit groove (5).

10. The gravity four-linkage seat structure according to claim 9, wherein the seat (12) and a reset lever are arranged on the base body (4), the base body (4) is fixedly connected with the seat (12), and the reset lever is hinged with the base body (4).