CN209932070U

CN209932070U - Chair chassis with adjustable inclination

Info

Publication number: CN209932070U
Application number: CN201920270346.1U
Authority: CN
Inventors: 梁景流
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-04
Filing date: 2019-03-04
Publication date: 2020-01-14
Anticipated expiration: 2029-03-04

Abstract

A chair chassis with an adjustable inclination angle comprises a fixed seat connected with chair legs and a chassis frame connected with a seat plate, wherein a swing frame is arranged between the chassis frame and the fixed seat and is connected with a chair back; the swing frame is provided with a plurality of stages of positioning holes, and a locking pin positioned in the fixed seat is inserted into the positioning holes under the driving of the power mechanism; a buffer spring is arranged between the swing frame and the fixed seat and pushes one end of the swing frame, which is provided with the chair back, to tilt upwards all the time. The utility model has the advantages that: a buffer spring is arranged between the swing frame and the fixed seat and pushes one end of the swing frame, which is provided with the chair back, to tilt upwards all the time, so that the chair back can automatically reset when being adjusted, and a user can push the chair back backwards to reach the optimal use angle by using the back.

Description

Chair chassis with adjustable inclination

Technical Field

The utility model relates to a furniture hardware fitting specifically is a chair chassis with adjustable inclination.

Background

At present, office chairs are generally divided into two types of chair back fixing and chair back adjusting, and chairs with fixed chair backs are easy to cause back fatigue after long-term use due to the fact that the chair backs of the chairs are not adjustable, so that certain compression is caused to human spines, and the disease probability of spondylopathy is increased; the chair with the adjustable chair back mainly achieves the purpose of adjusting by locking and adjusting the angle of the chair back in sections, but the adjustment steps are complicated, so that the purpose of adjusting the chair back cannot be rapidly achieved, and further improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defects of the prior art, providing a chair chassis with adjustable inclination angle, which has simple structure, convenient and fast adjustment and operation and is beneficial to improving the riding comfort.

The utility model discloses the purpose is realized with following mode: a chair chassis with adjustable inclination angle is characterized in that: the chair comprises a fixed seat connected with chair legs and a chassis frame connected with a seat plate, wherein a swing frame is arranged between the chassis frame and the fixed seat and connected with a chair back, the swing frame is hinged with the fixed seat through a first pin shaft, the swing frame is hinged with the chassis frame through a second pin shaft, and the swing frame swings relative to the fixed seat and the chassis frame through the first pin shaft and the second pin shaft; the swing frame is provided with a plurality of stages of positioning holes, a locking pin positioned in the fixed seat is driven by the power mechanism to be inserted into the positioning holes, and the relative angle between the swing frame and the fixed seat is locked; a buffer spring is arranged between the swing frame and the fixed seat and pushes one end of the swing frame, which is provided with the chair back, to tilt upwards all the time.

The power mechanism comprises a guide sleeve arranged in the fixed seat, a first guide hole is formed in the guide sleeve, and the locking pin is arranged in the first guide hole in a sliding manner; still install the promotion cover at the uide bushing tail end including slidingtype, be provided with the second guiding hole in the promotion cover, the locking round pin is put into in this second guiding hole, the tail end of promotion cover is installed and is promoted the round pin, it is articulated with actuating arm one end to promote the round pin, the actuating arm other end is articulated with the fixing base, it has the connecting rod still to articulate on the actuating arm, the actuating lever passes through the connecting rod and is articulated with the actuating arm, it can drive the actuating arm swing through the connecting rod to rotate the actuating arm, the drive is promoted and is moved in.

The surface of the locking pin is sleeved with a spring, one end of the spring is pressed on the locking pin, the other end of the spring is pressed in the guide sleeve, and the spring generates thrust to move the locking pin towards the pushing pin direction all the time.

The driving rod can be rotatably installed on the fixing seat, one end of the driving cylinder is provided with a handle, the other end of the driving cylinder is provided with a driving plate, and the connecting rod is hinged to be installed on the driving plate.

The locking pin at least is provided with two, is the installation side by side.

The utility model has the advantages that: 1. simple structure, low production cost and improved market competitiveness. 2. The multi-gear adjustment is realized, more use angles are provided for users to select, and therefore the use requirements of people with more body types are met. 3. A buffer spring is arranged between the swing frame and the fixed seat and pushes one end of the swing frame, which is provided with the chair back, to tilt upwards all the time, so that the chair back can automatically reset when being adjusted, and a user can push the chair back backwards to reach the optimal use angle by using the back.

Drawings

Fig. 1 is a diagram of the use effect of the final assembly of the utility model.

Fig. 2 and 3 are schematic structural diagrams of the present invention.

Fig. 4 is a schematic view of the rear structure of the hidden chassis frame of the present invention.

Fig. 5 is a sectional view of the structure of the present invention.

Fig. 6 is an enlarged view of the structure of the part a in fig. 5 of the present invention.

Fig. 7 is a schematic structural view of the middle power mechanism of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. A chair chassis with adjustable inclination angle is characterized in that: the chair comprises a fixed seat 2 connected with chair legs 1 and a chassis frame 4 connected with a seat plate 3, wherein a swing frame 5 is arranged between the chassis frame 4 and the fixed seat 2, the swing frame 5 is connected with a chair back 6, the swing frame 5 is hinged with the fixed seat 2 through a first pin shaft 51, the swing frame 5 is hinged with the chassis frame 4 through a second pin shaft 52, and the swing frame 5 swings relative to the fixed seat 2 and the chassis frame 4 through the first pin shaft 51 and the second pin shaft 52; a plurality of stages of positioning holes 7 are formed in the swing frame 5, a locking pin 8 positioned in the fixed seat 2 is driven by the power mechanism to be inserted into the positioning holes 7, and the relative angle between the swing frame 5 and the fixed seat 2 is locked; a buffer spring 9 is further arranged between the rocking frame 5 and the fixed seat 2, and the buffer spring 9 pushes one end of the rocking frame 5, which is provided with the chair back 6, to tilt upwards all the time.

The power mechanism comprises a guide sleeve 10 arranged in the fixed seat 2, a first guide hole 11 is arranged in the guide sleeve 10, and the locking pin 8 is slidably arranged in the first guide hole 11; still include the promotion cover 12 of slidingtype installation at uide bushing 10 tail end, be provided with second guiding hole 13 in the promotion cover 12, this second guiding hole 13 is put into to locking pin 8, promotion 14 is installed to the tail end of promotion cover 12, promotion 14 is articulated with actuating arm 15 one end, the actuating arm 15 other end is articulated with fixing base 2, still articulated on the actuating arm 15 have a connecting rod 16, actuating lever 17 is articulated with actuating arm 15 through connecting rod 16, it can drive actuating arm 15 swing through connecting rod 16 to rotate actuating arm 15, drive promotion 14 moves in second guiding hole 13, thereby drive locking pin 8 motion.

The surface of the locking pin 8 is sleeved with a spring 19, one end of the spring 19 is pressed against the locking pin 8, the other end of the spring 19 is pressed in the guide sleeve 10, and the spring 19 generates thrust to move the locking pin 8 towards the push pin 14.

The driving rod 17 is rotatably mounted on the fixed seat 2, one end of the driving cylinder is provided with a handle 171, the other end of the driving cylinder is provided with a driving plate 172, and the connecting rod 16 is hinged on the driving plate 172.

The locking pins 8 are at least provided with two locking pins which are arranged side by side.

The working principle is as follows: in the scheme, a chair leg 1 is connected with a fixed seat 2, a seat plate 3 is connected with a chassis frame 4, a swing frame 5 is arranged between the chassis frame 4 and the fixed seat 2, the swing frame 5 is connected with a chair back 6, the swing frame 5 is hinged with the fixed seat 2 through a first pin shaft 51, the swing frame 5 is hinged with the chassis frame 4 through a second pin shaft 52, and the swing frame 5 swings relative to the fixed seat 2 and the chassis frame 4 through the first pin shaft 51 and the second pin shaft 52; therefore, when the chair is used, the swing frame can swing for a certain angle around the first pin shaft and the second pin shaft, so that the relative angle between the chair back and the seat plate can be adjusted within a certain range, the chair is suitable for people with different body types and riding habits, and the riding comfort of the chair is improved.

Further: in order to lock the relative position between the chair back and the seat plate, a plurality of stages of positioning holes 7 are formed in the swing frame 5, and the locking pin 8 positioned in the fixed seat 2 is driven by the power mechanism to be inserted into the positioning holes 7. When the user needs to adjust again, the driving rod 17 is rotated, the driving plate 172 on the driving rod 17 swings, the driving plate 172 utilizes the connecting rod 16 to pull the driving arm 15 to swing, and the driving push pin 14 moves in the second guiding hole 13 when the driving arm 15 swings, so that the locking pin 8 is driven to move. Therefore, the driving rod can be rotated to drive the locking pin to be separated from or butted with the positioning hole, after the locking pin is separated from the positioning hole, the chair back moves forwards under the action of the buffer spring 9 to be in a reset state, at the moment, a user can utilize the back to push the chair back backwards, and when the chair reaches a proper gear, the driving rod is pulled to push the locking pin to be inserted into the corresponding positioning hole. When readjustment is needed, the operation is repeated. Therefore, compared with the prior art, the chair back angle in the scheme can be freely adjusted to meet the use habits of different users, meanwhile, the operation mode is simple and quick, the adjustment convenience is improved, the use texture of the users is improved, and the chair back angle adjusting device can be widely popularized and used.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims

1. A chair chassis with adjustable inclination angle is characterized in that: the chair comprises a fixed seat (2) connected with chair legs (1) and a chassis frame (4) connected with a seat plate (3), wherein a swing frame (5) is arranged between the chassis frame (4) and the fixed seat (2), the swing frame (5) is connected with a chair back (6), the swing frame (5) is hinged with the fixed seat (2) through a first pin shaft (51), the swing frame (5) is hinged with the chassis frame (4) through a second pin shaft (52), and the swing frame (5) swings relative to the fixed seat (2) and the chassis frame (4) through the first pin shaft (51) and the second pin shaft (52); a plurality of stages of positioning holes (7) are formed in the swing frame (5), a locking pin (8) positioned in the fixed seat (2) is driven by the power mechanism to be inserted into the positioning holes (7), and the relative angle between the swing frame (5) and the fixed seat (2) is locked; a buffer spring (9) is further arranged between the rocking frame (5) and the fixed seat (2), and the buffer spring (9) pushes one end of the rocking frame (5) where the chair back (6) is installed to tilt upwards all the time.

2. The adjustable tilt chair chassis of claim 1, wherein: the power mechanism comprises a guide sleeve (10) arranged in the fixed seat (2), a first guide hole (11) is formed in the guide sleeve (10), and the locking pin (8) is arranged in the first guide hole (11) in a sliding manner; still install promotion cover (12) at uide bushing (10) tail end including slidingtype, be provided with second guiding hole (13) in promotion cover (12), stop pin (8) are put into this second guiding hole (13), promote the tail end of cover (12) and install promotion round pin (14), promotion round pin (14) are articulated with actuating arm (15) one end, the actuating arm (15) other end is articulated with fixing base (2), it has connecting rod (16) still to articulate on actuating arm (15), actuating lever (17) are articulated with actuating arm (15) through connecting rod (16), it can drive actuating arm (15) swing through connecting rod (16) to rotate actuating arm (15), drive promotion round pin (14) are at second guiding hole (13) internal motion, thereby drive stop pin (8) motion.

3. The adjustable tilt chair chassis of claim 2, wherein: the surface of the locking pin (8) is sleeved with a spring (19), one end of the spring (19) is pressed against the locking pin (8), the other end of the spring (19) is pressed against the guide sleeve (10), and the spring (19) generates thrust to move the locking pin (8) towards the pushing pin (14) all the time.

4. The adjustable tilt chair chassis of claim 2, wherein: the driving rod (17) is rotatably arranged on the fixed seat (2), one end of the driving cylinder is provided with a handle (171), the other end of the driving cylinder is provided with a driving plate (172), and the connecting rod (16) is hinged on the driving plate (172).

5. The adjustable tilt chair chassis of claim 1, wherein: the locking pins (8) are at least provided with two locking pins which are arranged side by side.