CN218791384U

CN218791384U - Office chair with adjustable waist is leaned on

Info

Publication number: CN218791384U
Application number: CN202223281591.3U
Authority: CN
Inventors: 安红兵
Original assignee: Guangdong Muqi Chair Industry Co ltd
Current assignee: Guangdong Muqi Chair Industry Co ltd
Priority date: 2022-12-06
Filing date: 2022-12-06
Publication date: 2023-04-07
Anticipated expiration: 2032-12-06

Abstract

An office chair with an adjustable waist rest comprises chair legs and a chair seat arranged on the chair legs, wherein a chair back is arranged on the chair seat, a cushion layer is arranged at the front end of the chair back, a waist rest mechanism is arranged between the chair back and the cushion layer and comprises a waist rest plate, a height adjusting mechanism and a supporting frame, the height adjusting mechanism is arranged on the waist rest mechanism, when a user sits on the office chair, the user can stretch to the back of the office chair, a shifting sheet is shifted to enable a sliding block to move up and down in a sliding groove, and meanwhile the sliding block drives the waist rest plate to move up and down through the supporting frame to adjust the supporting height, so that the supporting height can be adjusted according to the comfort degree sensed by the user, and the supporting thickness can also be adjusted by twisting a knob; the height adjusting mechanism is provided with a sliding fit structure, and the waist support mechanism is clamped on the chair back in a sliding manner through a first sliding surface and a second sliding surface in the sliding fit structure, so that the waist support mechanism can stably move up and down on the chair back to be adjusted, and the phenomenon of falling is not easy to occur.

Description

Office chair with adjustable waist is leaned on

Technical Field

The utility model relates to an office chair field, concretely relates to office chair with adjustable waist leans on.

Background

The office chair is a chair which is convenient for work in daily work and social activities, can be used in both life and work, has wide application range and large demand, has different requirements on the office chair by different groups of people, and has the requirement on the office chair for people who occasionally stay in the office as long as the people can sit on the office chair; for people who are often in office chairs, the need for an office may be comfortable; for those who have long expectations of office use, the need for office chairs may also require massage or various adjustment functions. In order to enable the office chair to adapt to different people, certain functions need to be added to the office chair, and a structure capable of adjusting the waist support of the office chair is provided.

Among the current office chair technique, chinese patent CN202123399410.2 discloses a lumbar support adjustment mechanism of office chair, including setting up the support piece inboard at the backrest, support piece includes back of the chair, movable plate and back of the body pad, the movable plate sets up between back of the chair and back of the body pad, the edge fixed mounting of back of the body pad and back of the chair, the one side and the back of the chair sliding connection of movable plate, the regulation to support piece's height and thickness can be realized to the inboard fixed mounting of the another side of movable plate and back of the body pad to make this office chair applicable in the crowd of different statures, nevertheless go forward to use and discover this patent technology and still have the defect: firstly, the supporting structure of the office chair can be seated after the height is adjusted, and the supporting height is difficult to support under the sitting condition; secondly, the waist rest mechanism is absorbed on the chair back through the magnetic attraction device and is easy to fall off because of no fixation.

Therefore, in order to solve the technical defects of the above patent, the present inventors have improved and perfected the above technology.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides an office chair with adjustable waist is leaned on

The utility model provides a technical scheme that its technical problem adopted is:

an office chair with an adjustable waist rest comprises chair legs and a chair seat arranged on the chair legs, wherein a chair back is arranged on the chair seat, a cushion layer is arranged at the front end of the chair back, a waist rest mechanism is arranged between the chair back and the cushion layer and comprises a waist rest plate, a height adjusting mechanism and a supporting frame, the height adjusting mechanism comprises a sliding groove formed in the center of the chair back, a sliding block and a shifting piece, the sliding block is installed in the sliding groove and slides in a matched mode, the shifting piece is used for shifting the sliding block, the inner side of the shifting piece is fixed on the sliding block, one end, far away from the shifting piece, of the sliding block is connected with the supporting frame, and the waist rest plate is fixedly arranged on the supporting frame; be equipped with high locking structure between support frame and the back of the chair, high locking structure is including locating the high gear structure of multiunit on the back of the chair and locating the high locking structure of multiunit on the support frame, and the high gear structure of multiunit is from last to arranging the setting down, and the high gear structure of every group comprises two high gear archs that are located the sliding tray left and right sides respectively, and high locking groove is constituteed to two high gear archs adjacent from top to bottom, and the high locking structure of every group comprises the gear locking arch of interval setting about two, the protruding movable fit of gear locking is in high locking groove.

The utility model discloses in, be equipped with the rotation regulation mechanism who is used for adjusting waist backup plate hardness between support frame and the waist backup plate.

The utility model discloses in, rotary adjusting mechanism includes knob, threaded rod, threaded sleeve and is used for promoting the push rod of waist backup plate, the one end at the threaded rod is fixed to the knob, the threaded rod activity runs through plectrum, slider and support frame, threaded sleeve passes through the threaded connection mode suit at the other end of threaded rod, the push rod middle part is fixed on threaded sleeve, the push rod both ends articulate in waist backup plate rear end, be equipped with the spacing boss that prevents that the threaded rod from falling out in the middle of the threaded rod.

The utility model discloses in, be equipped with the rectangular hole on the waist backup plate, the rectangular hole is even vertical arranges on the waist backup plate.

The utility model discloses in, the support frame is including the support back end that is used for supporting the support anterior segment of waist strength and is used for installing the slider, it is equipped with first stiffening rib with waist back plate junction to support the anterior segment, it is equipped with the second stiffening rib with supporting back end mutually perpendicular and right angle department to support the anterior segment, it is the integrated into one piece structure with supporting the back end to support the anterior segment.

The utility model discloses in, be equipped with the through-hole that is used for installing the threaded rod on plectrum, slider and the support frame.

The utility model discloses in, the structural sliding fit structure that is used for making support frame sliding fit on the back of the chair that still is equipped with of high locking, the sliding fit structure is close to the first glide plane of slider one side, sets up the fixed slot of intercommunication second stiffening rib on first glide plane and sets up the second glide plane of keeping away from the knob one side on the plectrum including setting up supporting the back end, be equipped with the screw of intercommunication second stiffening rib in the fixed slot, the one end of slider cooperates in the fixed slot, the slider passes through the screw and fixes on supporting the back end with the screw cooperation.

The utility model discloses in, be equipped with on the back of the chair medial surface and be used for preventing first glide plane pivoted spacing, just spacing is located the both sides of high gear structure.

The utility model discloses in, be equipped with two sliding contact sand grips that control the interval and set up on the second sliding surface, the back sliding contact of sliding contact sand grip and the back of the chair back.

Compared with the prior art, the utility model, have following advantage and effect: the waist rest mechanism is provided with a height adjusting mechanism, when a user sits on the office chair, the user can stretch to the back of the office chair by hand, the shifting sheet is shifted to enable the sliding block to move up and down in the sliding groove, and meanwhile, the sliding block drives the waist rest plate to move up and down through the supporting frame to adjust the supporting height, so that the supporting height can be adjusted according to the comfort degree sensed by the user, and the supporting thickness can also be adjusted by twisting the knob; the height adjusting mechanism is provided with a sliding fit structure, and the waist support mechanism is clamped on the chair back in a sliding manner through a first sliding surface and a second sliding surface in the sliding fit structure, so that the waist support mechanism can be stably adjusted on the chair back in an up-and-down movement manner, and the falling phenomenon is not easy to occur.

Drawings

The invention will be further explained with reference to the drawings and the embodiments below:

FIG. 1 is a schematic view of an office chair according to the present embodiment;

FIG. 2 is a schematic view of the lumbar support mechanism in the present embodiment;

FIG. 3 is a side view of the lumbar support mechanism of the present embodiment;

FIG. 4 is a schematic view of the first sliding surface of the present embodiment;

FIG. 5 is a schematic view of a second sliding surface in the present embodiment;

FIG. 6 is a schematic view of the inner side of the backrest in this embodiment.

Detailed Description

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solution in the embodiments of the present invention, and the present invention is not limited to the following embodiments.

As shown in fig. 1 to 6, this embodiment discloses an office chair with adjustable waist leans on, include chair foot 10, locate seat support 20 on the chair foot 10, be equipped with back of the chair 30 on the seat support 20, be equipped with cushion layer 40 on the back of the chair 30 front end, be equipped with waist between back of the chair 30 and the cushion layer 40 and lean on mechanism 1, waist leans on mechanism 1 to include waist backup plate 2 and height adjusting mechanism 3, height adjusting mechanism 3 is including seting up in the sliding tray 31 of back of the chair 30 central authorities, installing at the gliding slider 32 of sliding tray 31 fit and being used for stirring plectrum 33 of slider 32, plectrum 33 inboard is fixed on slider 32, the one end that plectrum 33 was kept away from to slider 32 is connected with support frame 4, makes slider 32 reciprocate in sliding tray 31 through stirring plectrum 33, simultaneously slider 32 drives waist backup plate 2 through support frame 4 and reciprocates and adjusts support height. Be equipped with high locking structure 5 between support frame 4 and the back of the chair 30, high locking structure 5 is including locating the high gear of multiunit on the back of the chair 30 construct 51 and locate the high locking structure 52 of multiunit on the support frame 4, the high gear of multiunit constructs 51 from last to arranging the setting down, and the high gear of every group constructs 51 and comprises two high gear protruding 511 that are located the sliding tray 31 left and right sides respectively, and high locking groove 55 is constituteed to two high gear protruding 511 that are adjacent from top to bottom, and every high locking structure 52 of group is by two about the protruding 521 of gear locking that the interval set up, the protruding 521 movable fit of gear locking realizes the locking of 2 high positions of lumbar plate in high locking groove 55.

Preferably, a rotation adjusting mechanism 6 for adjusting the hardness of the lumbar support plate 2 is arranged between the support frame 4 and the lumbar support plate 2.

In this embodiment, the rotation adjusting mechanism 6 includes a knob 61 for rotation, a threaded rod 62 connected to the knob 61, a threaded sleeve 63 engaged with the threaded rod 62, and a push rod 64 for pushing the lumbar support plate 2, the knob 61 is fixed to one end of the threaded rod 62 by bolts, the threaded rod 62 movably penetrates through the dial 33, the slider 32 and the support frame 4, the threaded sleeve 63 is sleeved on the other end of the threaded rod 62 by a threaded connection manner, the middle of the push rod 64 is fixed to the threaded sleeve 63, two ends of the push rod 64 are hinged to the rear end of the lumbar support plate 2, a limiting boss 65 for preventing the threaded rod 62 from falling out is arranged in the middle of the threaded rod 62, the knob 61 drives the threaded rod 62 to rotate in the threaded sleeve 63, so that the threaded sleeve 63 is far away from or close to the slider 32, thereby pushing or pulling the lumbar support plate 2, and as preferred, the rotation adjusting mechanism 6 can set different functions according to preferences of different people: if the user needs hard support, the lumbar support plate 2 can be pushed outwards through the adjusting knob 61; if the user needs soft support, the screw rod 62 can be screwed out of the screw sleeve 63 through the knob 61, so that the waist back plate 2 recovers the original elasticity, and the chair back is softer and more comfortable.

Preferably, the backrest 30 is provided with an opening, and the opening is used for extending between the backrest 30 and the cushion layer 40 to manually open or close the rotary adjusting mechanism.

Preferably, the waist back plate 2 is provided with a long hole 21, the long hole 21 is uniformly and vertically arranged on the waist back plate 2, and the long hole 21 is used for making the waist back plate 2 better deform and bend, so that the cushion layer 40 is better attached to and supported on the back of the user.

Preferably, the waist back plate 2 and the support frame 4 are of an integrally formed structure, which is beneficial to improving the strength of the waist back mechanism.

In this embodiment, the supporting frame 4 includes a supporting front section 41 for supporting the strength of the lumbar region and a supporting rear section 42 for mounting the sliding block 32, preferably, a first reinforcing rib 43 is disposed at a joint of the supporting front section 41 and the lumbar plate 2, a second reinforcing rib 44 is disposed at a right angle of the supporting front section 41 and the supporting rear section 42, and the supporting front section 41 and the supporting rear section 42 are integrally formed.

Preferably, the shifting block 33, the sliding block 32 and the supporting frame 4 are provided with through holes for mounting the threaded rod 62.

In this embodiment, the height locking structure 5 is further provided with a sliding fit structure 53 for enabling the support frame 4 to be in sliding fit with the seat back 30, the sliding fit structure 53 includes a first sliding surface 531 arranged on one surface of the support back section 42 close to the slider 32, a fixing groove 532 arranged on the first sliding surface 531 and communicated with the second reinforcing rib 44, and a second sliding surface 533 arranged on the surface of the plectrum 33 far away from the knob 61, a screw hole 534 communicated with the second reinforcing rib 44 is arranged in the fixing groove 532, one end of the slider 32 is fitted in the fixing groove 532, and the slider 32 is fixed on the support back section 42 through the screw and screw hole 534 in a matching manner, so that the first sliding surface 531 and the second sliding surface 533 are slidably clamped on the seat back 30, the lumbar support mechanism 1 is stably adjusted on the seat back 30 in an up-down movement manner, and the phenomenon is not prone to fall off.

Preferably, be equipped with the location strip 532a that is used for making slider 32 forward installation in the fixed slot 532, location strip 532a divides into upper segment and hypomere to fixed slot 532, one side that slider 32 is close to support frame 4 is equipped with the constant head tank 532b that is used for cooperating location strip 532a installation, be equipped with on the back of the chair 30 inboard side and be used for preventing two spacing strips 54 of first glide plane 531 pivoted, and two spacing strips 54 are located the both sides of high gear structure 51 respectively, spacing strip 54 and the protruding 511 fixed connection of high gear, two form the sliding guide groove between the spacing strip 54, support back end 42 in the sliding guide groove, support the left and right sides of back end 42 respectively with two spacing strip 54 sliding fit.

Preferably, the sliding block 32 is provided with a positioning groove 532b for fitting the positioning bar 532a, and the positioning groove 532b is used for positioning and fitting the sliding block 32 in the fixing groove 532.

Preferably, in order to reduce friction between the second sliding surface 533 and the seat back, two sliding contact protrusions 535 are provided on the second sliding surface 533 at a distance from each other in the left-right direction, and the sliding contact protrusions 535 are in sliding contact with the back surface of the seat back.

The above description is only exemplary of the present invention, and those skilled in the art can make various modifications, additions or substitutions to the described embodiments, without departing from the scope of the present invention or exceeding the scope defined by the claims.

Claims

1. The utility model provides an office chair with adjustable waist leans on, includes chair foot (10), locates seat support (20) on chair foot (10), be equipped with back of the chair (30) on seat support (20), be equipped with cushion (40) on back of the chair (30) front end, it leans on mechanism (1), its characterized in that to be equipped with the waist between back of the chair (30) and cushion (40): the waist rest mechanism (1) comprises a waist rest plate (2), a height adjusting mechanism (3) and a support frame (4), the height adjusting mechanism (3) comprises a sliding groove (31) arranged in the center of a chair back (30), a sliding block (32) installed in the sliding groove (31) and matched with and sliding, and a shifting piece (33) used for shifting the sliding block (32), the inner side of the shifting piece (33) is fixed on the sliding block (32), one end, far away from the shifting piece (33), of the sliding block (32) is connected with the support frame (4), and the waist rest plate (2) is fixedly arranged on the support frame (4); be equipped with high locking structure (5) between support frame (4) and the back of the chair (30), high locking structure (5) construct (51) and locate the high locking structure (52) of multiunit on support frame (4) including locating the high gear of multiunit on the back of the chair (30), the high gear of multiunit constructs (51) from last to arranging the setting down, every high gear of group constructs (51) and comprises two high gear archs (511) that are located sliding tray (31) left and right sides respectively, high locking groove (55) is constituteed in two adjacent high gear archs (511) from top to bottom, every high locking structure (52) of group comprises the protruding (521) of gear locking that the interval set up about two, protruding (521) movable fit of gear locking is in high locking groove (55).

2. An office chair with adjustable lumbar support as claimed in claim 1, wherein: a rotary adjusting mechanism (6) for adjusting the hardness of the waist back plate (2) is arranged between the supporting frame (4) and the waist back plate (2).

3. An office chair with adjustable lumbar support as claimed in claim 2, wherein: rotatory adjustment mechanism (6) include knob (61), threaded rod (62), threaded sleeve (63) and push rod (64) that are used for promoting waist backup plate (2), the one end at threaded rod (62) is fixed in knob (61), plectrum (33), slider (32) and support frame (4) are run through in the activity of threaded rod (62), threaded sleeve (63) pass through the other end of threaded connection mode suit at threaded rod (62), push rod (64) middle part is fixed on threaded sleeve (63), push rod (64) both ends articulate at waist backup plate (2) rear end, be equipped with spacing boss (65) that prevent threaded rod (62) from falling out in the middle of threaded rod (62).

4. An office chair with adjustable lumbar support as claimed in claim 3, wherein: the waist back plate (2) is provided with strip holes (21), and the strip holes (21) are uniformly and vertically distributed on the waist back plate (2).

5. An office chair with adjustable lumbar support as claimed in claim 4, wherein: the support frame (4) is including support anterior segment (41) that is used for supporting waist strength and support back end (42) that is used for installing slider (32), support anterior segment (41) and lumbar plate (2) junction and be equipped with first stiffening rib (43), support anterior segment (41) and support back end (42) mutually perpendicular and right angle department are equipped with second stiffening rib (44), support anterior segment (41) and support back end (42) and be the integrated into one piece structure.

6. An office chair with adjustable lumbar support as claimed in claim 5, wherein: through holes for mounting the threaded rod (62) are formed in the shifting sheet (33), the sliding block (32) and the supporting frame (4).

7. An office chair with adjustable lumbar support as claimed in claim 6, wherein: still be equipped with on height-locking structure (5) and be used for making support frame (4) sliding fit structure (53) on back of the chair (30), sliding fit structure (53) are including setting up first glide plane (531) that is close to slider (32) one side in supporting back end (42), set up fixed slot (532) of intercommunication second stiffening rib (44) on first glide plane (531) and set up second glide plane (533) of keeping away from knob (61) one side on plectrum (33), be equipped with screw (534) of intercommunication second stiffening rib (44) in fixed slot (532), the one end of slider (32) cooperates in fixed slot (532), slider (32) are fixed on supporting back end (42) through screw and screw (534) cooperation.

8. An office chair with adjustable lumbar support as claimed in claim 7, wherein: be equipped with spacing strip (54) that are used for preventing first glide plane (531) pivoted on the back of the chair (30) medial surface, just spacing strip (54) are located the both sides of high gear structure (51).

9. An office chair with adjustable lumbar support as claimed in claim 8, wherein: two sliding contact convex strips (535) which are arranged at intervals from left to right are arranged on the second sliding surface (533), and the sliding contact convex strips (535) are in sliding contact with the back surface of the chair back (30).