CN219249641U

CN219249641U - Backrest seat with adjustable chair

Info

Publication number: CN219249641U
Application number: CN202320246831.1U
Authority: CN
Inventors: 李群杰
Original assignee: Dongguan Shen Jie Hardware Products Co ltd
Current assignee: Dongguan Shen Jie Hardware Products Co ltd
Priority date: 2023-02-18
Filing date: 2023-02-18
Publication date: 2023-06-27
Anticipated expiration: 2033-02-18

Abstract

The utility model discloses an adjustable backrest seat of a chair, which relates to the technical field of furniture and comprises supporting legs, wherein the top ends of the supporting legs are connected with a cushion, one side of the cushion is connected with two telescopic connecting frames, a backrest is connected between the two telescopic connecting frames, an adjusting unit is connected between the cushion and the backrest, the backrest seat can enable the backrest and the movable connecting rods to slide along a limiting groove and prevent the movable connecting rods from falling back when the backrest and the movable connecting rods slide upwards along a sliding groove through the matching of a top connecting plate and the movable connecting rods with the connector and the limiting convex blocks, so that the position of the backrest is fixed, and the movable blocks and the connecting springs are matched with a mounting groove and the movable groove, so that the limiting convex blocks are separated from the limiting groove, the backrest can slide downwards conveniently, the backrest can be adjusted in height according to the stature of a user, the use comfort of the chair is improved, the backrest seat is easy to fix, and the backrest seat is low in cost.

Description

Backrest seat with adjustable chair

Technical Field

The utility model relates to the technical field of furniture, in particular to an adjustable backrest seat of a chair.

Background

The chair is a common furniture, in the production and manufacturing process of the chair, comfort is usually used as a main purpose, most of the seat cushion and the seat back of the chair in the prior art are fixedly designed, and people with different sizes and constitutions can not always use the chair comfortably, so that a chair with the seat back capable of being adjusted according to the sizes of users is required, for example, chinese patent discloses a chair back rest plate (publication No. CN 213247904U) convenient to adjust, and the back rest plate of the chair can adjust the fixing height according to the heights of users, but the back rest plate is easy to slide down in the use process under the condition of loose screwing due to the need of continuously screwing adjusting bolts, so that inconvenient use experience is brought to the users.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the backrest seat with the adjustable chair, which solves the problem of inconvenient adjustment of the backrest plate of the chair.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the backrest seat comprises supporting legs, wherein the top ends of the supporting legs are connected with a cushion, one side of the cushion is connected with two telescopic connecting frames, a backrest is connected between the two telescopic connecting frames, and an adjusting unit is connected between the cushion and the backrest;

the adjusting unit comprises a top connecting plate, the bottom of the top connecting plate is connected with a movable connecting rod, the bottom of the movable connecting rod is connected with a damping rod, and the outer surface of the damping rod is connected with a reset spring.

As a further technical scheme of the utility model, one side of the seat cushion is connected with a bottom connecting plate, one side surface of the bottom connecting plate is connected with a fixed seat, the upper surface of the fixed seat is correspondingly provided with a sliding groove corresponding to the sliding path of the movable connecting rod, both sides of the fixed seat are provided with mounting grooves, the inner side wall of each mounting groove is connected with a movable block, and the inner side wall of each mounting groove is correspondingly provided with a movable groove corresponding to the sliding path of the movable block.

As a further technical scheme of the utility model, the surface of the backrest is connected with a cushion, one side surface of the cushion is provided with a magic tape, the surface of the cushion is made of leather, the cushion is connected with the surface of the backrest through the magic tape, and one side surface of the top connecting plate is connected with the backrest.

As a further technical scheme of the utility model, the two sides of the movable block are connected with the connecting springs, one ends of the connecting springs are connected to the inner side walls of the movable grooves, the top ends of the movable blocks are connected with the connecting shafts, the outer surfaces of the connecting shafts are connected with the connectors, the upper surfaces of the connectors are connected with the limit protruding blocks, and the two sides of the bottom ends of the movable connecting rods are provided with a plurality of limit grooves corresponding to the two limit protruding blocks.

As a further technical scheme of the utility model, the inner diameter of the sliding groove is matched with the sliding path of the movable connecting rod, the inner diameter of the mounting groove and the inner diameter of the movable groove are matched with the sliding path of the movable block, and the movable block is connected with the fixed seat through the connecting spring and the movable groove.

As a further technical scheme of the utility model, the top ends of the damping rod and the return spring are connected with the lower surface of the fixed seat, the inner diameter sizes of the limiting grooves are matched with the outer diameter sizes of one end of the limiting convex block, and the backrest is connected with the cushion through the telescopic connecting frame, the top connecting plate and the movable connecting rod.

Advantageous effects

The utility model provides an adjustable backrest seat of a chair. Compared with the prior art, the method has the following beneficial effects:

1. the utility model provides a back seat that chair can be adjusted, top connecting plate and movable connecting rod and connector and spacing lug's cooperation through back one side connection, can make back and movable connecting rod upwards slide along the spout when, spacing lug slides along the spacing groove, and prevent that movable connecting rod from falling back, thereby the position of fixed back, and movable block and connecting spring and mounting groove and movable groove's cooperation can make spacing lug and spacing groove separation, thereby make things convenient for back and movable connecting rod to slide downwards, the convenient back carries out the adjustment of height according to user's stature, improve the comfort level of use of chair, easy operation, the back is easy fixed, the cost is lower.

2. The utility model provides a back seat that chair can be adjusted, through cushion and magic subsides and the cooperation of back, can be convenient for the change of cushion wash, the dismouting of cushion of being convenient for, and connect damping pole and reset spring in movable connecting rod bottom can prevent the speed of back when sliding downwards, improves the buffer performance that the back was adjusted, improves the life of chair.

Drawings

FIG. 1 is a schematic view of a chair seat with adjustable backrest;

FIG. 2 is an exploded view of a back rest for a chair with adjustable back rest;

FIG. 3 is an exploded view of an adjusting unit of a back rest seat of a chair that can be adjusted;

fig. 4 is an enlarged view of a in fig. 4 of a back rest of a chair that can be adjusted.

In the figure: 1. support legs; 2. a cushion; 21. a bottom connecting plate; 22. a fixing seat; 23. a chute; 24. a movable groove; 25. a mounting groove; 3. a telescopic connecting frame; 4. a backrest; 41. a back cushion; 42. a magic tape; 5. an adjusting unit; 51. a top connection plate; 52. a movable connecting rod; 53. a damping rod; 54. a return spring; 55. a movable block; 56. a connecting spring; 57. a connecting shaft; 58. a connector; 59. a limit bump; 501. and a limit groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described 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.

Referring to fig. 1-4, the present utility model provides a backrest seat technical solution with adjustable chair: the utility model provides a back seat that chair can be adjusted, includes supporting leg 1, and the top of supporting leg 1 is connected with cushion 2, and one side of cushion 2 is connected with two telescopic connection frame 3, is connected with back 4 between two telescopic connection frame 3, is connected with adjusting unit 5 between cushion 2 and the back 4, and adjusting unit 5 includes top connecting plate 51, and the bottom of top connecting plate 51 is connected with movable connecting rod 52, and movable connecting rod 52's bottom is connected with damping rod 53, and damping rod 53's surface is connected with reset spring 54.

As shown in fig. 2-3, one side of the seat cushion 2 is connected with a bottom connecting plate 21, one side surface of the bottom connecting plate 21 is connected with a fixing seat 22, the upper surface of the fixing seat 22 is correspondingly provided with a sliding groove 23 with a sliding path of a movable connecting rod 52, both sides of the fixing seat 22 are respectively provided with a mounting groove 25, the inner side wall of the mounting groove 25 is connected with a movable block 55, the inner side wall of the mounting groove 25 is correspondingly provided with a movable groove 24 with a sliding path of the movable block 55, the inner diameter size of the sliding groove 23 is matched with the sliding path of the movable connecting rod 52, the inner diameter size of the mounting groove 25 and the movable groove 24 are matched with the sliding path of the movable block 55, and the movable block 55 is connected with the fixing seat 22 through a connecting spring 56 and the movable groove 24, and the movable block 55 can slide back and forth in the mounting groove 25 and the movable groove 24 through the connecting spring 56, so that the movable connecting rod 52 is limited.

As shown in fig. 2, the surface of the backrest 4 is connected with a cushion 41, a side surface of the cushion 41 is provided with a velcro 42, the surface of the cushion 41 is made of leather, the cushion 41 is connected with the surface of the backrest 4 through the velcro 42, and a side surface of the top connecting plate 51 is connected with the backrest 4, and it is noted that the cushion 41 can be freely detached from the surface of the backrest 4 through the velcro 42, so that the cushion is convenient to change and wash.

As shown in fig. 3-4, the two sides of the movable block 55 are connected with the connecting spring 56, one end of the connecting spring 56 is connected to the inner side wall of the movable groove 24, the top end of the movable block 55 is connected with the connecting shaft 57, the outer surface of the connecting shaft 57 is connected with the connecting head 58, the upper surface of the connecting head 58 is connected with the limit bump 59, the two sides of the bottom end of the movable connecting rod 52 are respectively provided with a plurality of limit grooves 501 corresponding to the two limit bumps 59, the top ends of the damping rod 53 and the reset spring 54 are respectively connected with the lower surface of the fixed seat 22, the inner diameter sizes of the plurality of limit grooves 501 are respectively matched with the outer diameter sizes of one end of the limit bump 59, the backrest 4 is connected with the cushion 2 through the telescopic connecting frame 3, the top connecting plate 51 and the movable connecting rod 52, and the requirement is that the damping rod 53 and the reset spring 54 can be separated from the limit grooves 501 when the limit bumps 59 are separated from the limit grooves 501, the connecting head 58 and the limit bumps 59 can be used for limiting the movable connecting rod 52 in an upward sliding mode, so as to prevent downward resetting.

The working principle of the utility model is as follows: when the backrest 4 is used, the backrest 4 is lifted upwards, the telescopic connecting frame 3 connected to the bottom end of the backrest is stretched upwards, the movable connecting rod 52 slides upwards along the chute 23, the connector 58 and the limiting lug 59 on one side of the movable block 55 swing along the connecting shaft 57 in the sliding process, so that the limiting lug 59 slides along the limiting groove 501, after the backrest 4 is loosened after the backrest is adjusted to a proper height, the movable connecting rod 52 falls back along the chute 23, and after the limiting grooves 501 on two sides of the movable connecting rod 52 are clamped with the limiting lug 59, the backrest 4 is prevented from continuously falling back, and the upward adjustment of the backrest 4 can be completed;

the two movable blocks 55 slide to two sides along the mounting groove 25 and the movable groove 24, so that the movable blocks 55 compress the connecting springs 56 along the movable groove 24, the limiting convex blocks 59 on the upper surface of the connecting heads 58 are separated from the corresponding limiting grooves 501, the damping rods 53 and the reset springs 54 at the bottom ends of the movable connecting rods 52 drive the movable connecting rods 52 and the backrest 4 to slowly descend downwards along the sliding grooves 23, after the movable blocks 55 are loosened after the movable blocks descend to a proper position, the connecting springs 56 drive the movable blocks 55 to reset along the movable groove 24, and the limiting convex blocks 59 are clamped with the corresponding limiting grooves 501, so that the backrest 4 can be adjusted downwards.

Claims

1. The backrest seat with the adjustable chair comprises supporting legs (1) and is characterized in that the top ends of the supporting legs (1) are connected with a seat cushion (2), one side of the seat cushion (2) is connected with two telescopic connecting frames (3), a backrest (4) is connected between the two telescopic connecting frames (3), and an adjusting unit (5) is connected between the seat cushion (2) and the backrest (4);

the adjusting unit (5) comprises a top connecting plate (51), a movable connecting rod (52) is connected to the bottom end of the top connecting plate (51), a damping rod (53) is connected to the bottom end of the movable connecting rod (52), and a reset spring (54) is connected to the outer surface of the damping rod (53).

2. The backrest seat with adjustable chair according to claim 1, characterized in that one side of the seat cushion (2) is connected with a bottom connecting plate (21), one side of the bottom connecting plate (21) is connected with a fixed seat (22), sliding grooves (23) are correspondingly formed in the upper surface of the fixed seat (22) and the sliding path of the movable connecting rod (52), mounting grooves (25) are formed in two sides of the fixed seat (22), movable blocks (55) are connected to the inner side walls of the mounting grooves (25), and movable grooves (24) are correspondingly formed in the inner side walls of the mounting grooves (25) and the sliding path of the movable blocks (55).

3. The backrest seat with adjustable chair according to claim 1, characterized in that the surface of the backrest (4) is connected with a cushion (41), a side surface of the cushion (41) is provided with a velcro (42), the surface of the cushion (41) is made of leather, the cushion (41) is connected with the surface of the backrest (4) through the velcro (42), and a side surface of the top connecting plate (51) is connected with the backrest (4).

4. The backrest seat with adjustable chair according to claim 2, characterized in that the two sides of the movable block (55) are respectively connected with a connecting spring (56), one end of the connecting spring (56) is connected to the inner side wall of the movable groove (24), the top end of the movable block (55) is connected with a connecting shaft (57), the outer surface of the connecting shaft (57) is connected with a connector (58), the upper surface of the connector (58) is connected with a limiting lug (59), and a plurality of limiting grooves (501) are correspondingly formed in the two sides of the bottom end of the movable connecting rod (52) and the two limiting lugs (59).

5. The adjustable backrest seat according to claim 4, wherein the inner diameter of the sliding groove (23) is adapted to the sliding path of the movable connecting rod (52), the inner diameter of the mounting groove (25) and the movable groove (24) is adapted to the sliding path of the movable block (55), and the movable block (55) is connected with the fixed seat (22) through the connecting spring (56) and the movable groove (24).

6. The adjustable backrest seat of claim 4, wherein the top ends of the damping rod (53) and the return spring (54) are connected with the lower surface of the fixed seat (22), the inner diameter sizes of the limiting grooves (501) are matched with the outer diameter sizes of one ends of the limiting protruding blocks (59), and the backrest (4) is connected with the seat cushion (2) through the telescopic connecting frame (3), the top connecting plate (51) and the movable connecting rod (52).