CN210493351U

CN210493351U - Chair with height-adjustable backrest

Info

Publication number: CN210493351U
Application number: CN201921646243.7U
Authority: CN
Inventors: 王小东
Original assignee: Foshan Yizhong Furniture Co Ltd
Current assignee: Foshan Yizhong Furniture Co Ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-05-12
Anticipated expiration: 2029-09-29

Abstract

The utility model relates to a chair with a backrest capable of automatically adjusting height, which comprises a base, a chair surface arranged at the top end of the base, handrails arranged at two sides of the chair surface, wherein the chair surface is also provided with a telescopic backrest positioned at the center of the handrails at two sides, the telescopic backrest comprises a bracket connected with the chair surface, a backrest frame sleeved outside the bracket and a backrest cushion arranged at the outermost layer of the backrest frame, a height-fixing component is arranged between the bracket and the backrest frame, the height-fixing component is connected with a singlechip and a power supply through a circuit and an electric signal, the singlechip and the power supply are arranged at the bottom surface of the chair surface, the utility model has the advantages of having a convenient backrest height adjusting structure, automatically carrying out certain adjustment according to the pressure from the backrest, thereby having strong comfort, being more durable, being not easy to break down and being applicable to the high-load work in the office environment, can provide comparatively light office environment for the user.

Description

Chair with height-adjustable backrest

Technical Field

The utility model belongs to the technical field of office supplies, concretely relates to chair with height automatically adjustable backrest.

Background

At present, the back height of most office chairs is not adjustable, generally the back cushion is adjustable, but the structure is not durable enough and not comfortable enough, and in the office high load work, the back muscle of a user can not be well relaxed, in addition, some office chairs with the back height adjusting function are unreliable in the height adjusting mechanism, faults like 'sliding wire', 'walking tooth' and the like are easy to occur, and the height adjusting function is similar to the nominal height adjusting function.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the problem among the background art, but provide a chair of back automatically regulated height, satisfied the correlation technique demand, concrete technical scheme is as follows:

but chair of back automatically regulated height, include the base, locate the seat on base top, locate the handrail of seat both sides, the seat still is equipped with the telescopic back that is located the both sides handrail centre, the outside back frame of support is located to telescopic back includes the support of being connected with the seat, the cover to and, locate the outermost back pad of back frame, the support with be equipped with between the back frame and decide the high subassembly, it has singlechip and power to decide high subassembly to have through circuit and signal connection, the bottom surface of seat is located to singlechip and power.

As the utility model discloses further technical scheme, decide high subassembly including locate on the support highly carve the position, with highly carve the position matching climb the tooth way and locate in the backrest frame with highly carve the screens pole that the position matches, screens pole both ends are by screens motor drive and be fixed in the backrest frame, the outside of screens pole is equipped with and climbs the motor that climbs that the tooth way matches, screens motor is servo motor with the motor that climbs.

As the utility model discloses a further technical scheme, back frame is the sectional type structure, including being no less than 4 sections's segmentation, except that the segmentation of bottom and support fixed connection can not remove, all the other segmentations are all through the segmentation swing joint who decides high subassembly and bottom, decide high subassembly including locating the tooth track that climbs between the segmentation to and locate in the segmentation with the motor that climbs that the tooth track matches, the motor that climbs is servo motor.

As a further technical scheme of the utility model, connect through bellows structure between the back frame.

As a further technical scheme of the utility model, base bottom evenly distributed has and is no less than 5 universal wheels.

As a further technical solution of the present invention, the armrest is provided with a telescopic front end portion.

The beneficial effects of the utility model reside in that, have convenient back height control structure to can carry out certain reply nature automatically according to the pressure that comes from the back and adjust, consequently the travelling comfort is strong, and is also comparatively durable, and difficult trouble is applicable to the high load work in the office environment, can provide comparatively light office environment for the user.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged view of a portion of the height-setting assembly.

Fig. 3 is a schematic structural diagram of another embodiment of the present invention.

Wherein: the seat comprises a base 1, a seat surface 2, armrests 3, a telescopic backrest 4, a support 5, a backrest frame 6, a backrest cushion 7, a height scale 8, a climbing tooth path 9, a clamping rod 10, a clamping motor 11, a climbing motor 12, a subsection 13, a bellows type structure 14, universal wheels 15 and a front end part 16.

Detailed Description

Embodiments of the present invention will be described with reference to the accompanying drawings and related embodiments, wherein the following embodiments are only preferred embodiments for better illustrating the present invention, and the embodiments of the present invention are not limited to the following embodiments, and the related essential components of the present invention related to the technical field should be considered as known in the art and can be known and mastered by those skilled in the technical field.

In the description of the present invention, it is to be understood that the terms "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "inner," and the like are used in the orientation or positional relationship indicated in the drawings, merely for the purpose of describing the invention and simplifying the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Combine the attached drawing to show, but chair of back automatically regulated height, including base 1, locate seat 2 on base 1 top, locate the handrail 3 of seat 2 both sides, seat 2 still is equipped with the telescopic back 4 that is located the 3 positive centre of both sides handrail, telescopic back 4 includes the support 5 of being connected with seat 2, overlaps and locates the outside back frame 6 of support 5 to and, locate the outermost back pad 7 of back frame 6, support 5 with be equipped with between the back frame 6 and decide the high subassembly, it has singlechip and power to decide the high subassembly to have through circuit and signal connection, the bottom surface of seat 2 is located to singlechip and power.

The utility model discloses an embodiment lies in, telescopic backrest 4 is through deciding high subassembly, can freely adjust the relative height between support 5 and the backrest frame 6, thereby realized the altitude mixture control function, and cooperation and the singlechip and the power of deciding high subassembly to be connected, can respond to the pressure that comes from telescopic backrest 4's user back, thereby realize the altitude mixture control of adaptation formula, make the user can develop high strength work under a relatively most comfortable backrest environment, user's pressure and fatigue have been alleviated, durable and reliable, it needs to point out, singlechip and power are the necessary but known technological means who realizes this function of automation, in the prior art, there has been the similar component that carries out regulatory function according to pressure, the utility model discloses only directly quote similar technological means.

Referring to fig. 2, in a preferred embodiment, the height-fixing assembly includes a height notch 8 disposed on the bracket 5, a climbing rack 9 matching with the height notch 8, and a locking rod 10 disposed in the backrest frame 6 and matching with the height notch 8, both ends of the locking rod 10 are driven by a locking motor 11 and fixed in the backrest frame 6, a climbing motor 12 matching with the climbing rack 9 is disposed outside the locking rod 10, both the locking motor 11 and the climbing motor 12 are servo motors, in order to make the height-fixing assembly reliable, in this embodiment, the backrest frame 6 is an integral structure, and the height notch 8 and the climbing rack 9 disposed on the bracket 5 are used as references for height adjustment, when height adjustment is required, the locking motor 11 rotates to separate the locking rod 10 from the height notch 8, the climbing motor 12 drives the backrest frame 6 to climb to the corresponding height notch 8 along the climbing rack 9, the screens motor 11 rotates for the screens pole 10 blocks into corresponding height again and carves the position 8, owing to have the height to carve the position 8 and climb the dual joint effect of tooth track 9, therefore overall structure is very reliable, and the scale is accurate.

Referring to fig. 3, a preferred embodiment, the backrest frame 6 is a sectional structure, which includes at least 4 sections of segments 13, except that the bottom section 13 is immovably connected to the support 5, the rest of the segments 13 are movably connected to the bottom section 13 through height-fixing components, the height-fixing components include climbing tooth tracks 9 disposed between the segments 13 and climbing motors 12 disposed in the segments and matching with the climbing tooth tracks 9, the climbing motors 12 are servo motors, and the difference from the previous embodiment is that, in the present embodiment, the height adjustment is realized by adjusting the length of the backrest frame 6, and the relative distance between the segments 13 is changed by using the climbing tooth tracks 9 and the climbing motors 12, so as to realize the height adjustment, and the climbing tooth tracks 9 and the climbing motors 12 are engaged with each other through gears, which is pointed out that, although the present invention is directed to the clamping motors 11, The climbing motor 12 and the like are further explained, but in the prior art, a segmented blocking structure belongs to the category of the prior art, and the position or height change through the cooperation between the gear and the rack also belongs to common knowledge, so the structure is omitted but does not represent that the structure cannot be understood by the skilled in the art.

In a preferred embodiment, the backrest frames 6 are connected by a bellows structure 14 to protect the internal structure and also to prevent the user from being pinched.

In a preferred embodiment, at least 5 universal wheels 15 are uniformly distributed at the bottom of the base 1, so that the movement is convenient.

In a preferred embodiment, the arm rest 3 is provided with a telescopic front end 16, which is convenient for different users.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. But chair of back automatically regulated height, including the base, locate the seat on base top, locate the handrail of seat both sides, its characterized in that, the seat still is equipped with the telescopic back that is located the positive of both sides handrail, telescopic back includes the support of being connected with the seat, and the outside back frame of support is located to the cover to and, locate the outermost back pad of back frame, the support with be equipped with between the back frame and decide the height subassembly, decide the height subassembly and have singlechip and power through circuit and signal connection, the bottom surface of seat is located to singlechip and power.

2. The chair with the backrest capable of automatically adjusting the height according to claim 1, wherein the height-fixing component comprises a height notch arranged on the bracket, a climbing rack matched with the height notch and a clamping rod arranged in the backrest frame and matched with the height notch, two ends of the clamping rod are driven by a clamping motor and fixed in the backrest frame, the outer side of the clamping rod is provided with a climbing motor matched with the climbing rack, and the clamping motor and the climbing motor are both servo motors.

3. The chair with the backrest capable of automatically adjusting the height according to claim 1, wherein the backrest frame is of a sectional structure and comprises not less than 4 sections, the rest sections are movably connected with the lowermost section through a height-fixing component except that the lowermost section is fixedly connected with the bracket, the height-fixing component comprises climbing tooth tracks arranged between the sections and climbing motors arranged in the sections and matched with the climbing tooth tracks, and the climbing motors are servo motors.

4. A chair with automatically adjustable backrest according to claim 3, wherein the backrest frames are connected by a bellows structure.

5. The chair with the backrest capable of automatically adjusting the height as claimed in claim 1, wherein the base is uniformly distributed with at least 5 universal wheels.

6. A chair with a self-adjustable backrest as claimed in claim 1, wherein the armrests are provided with a telescopic front end portion.