CN220001301U - Chair back device capable of being adjusted in sliding mode and chair - Google Patents
Chair back device capable of being adjusted in sliding mode and chair Download PDFInfo
- Publication number
- CN220001301U CN220001301U CN202320338771.6U CN202320338771U CN220001301U CN 220001301 U CN220001301 U CN 220001301U CN 202320338771 U CN202320338771 U CN 202320338771U CN 220001301 U CN220001301 U CN 220001301U
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- back support
- bearing seat
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- seat
- guide
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- 210000001503 joint Anatomy 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000003238 somatosensory effect Effects 0.000 description 1
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- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The utility model discloses a chair back device capable of being adjusted in a sliding manner and a chair, comprising a back support and a back support assembly arranged on the back support in a sliding manner; the back support assembly comprises a central bearing seat, wherein the central bearing seat is in front-back butt joint with the back support, and a sliding mechanism is arranged between the central bearing seat and the back support; the sliding mechanism comprises a guide seat arranged on one of the back support or the center bearing seat and a guide groove correspondingly arranged on the other of the back support or the center bearing seat; the joint surface between the back support and the central bearing seat is an arc surface, and the central bearing seat can slide up and down along the back support in an arc track; the back support assembly slides downwards along the back support, and simultaneously the lower end of the back support assembly is pushed forwards.
Description
Technical Field
The utility model relates to the field of seating, in particular to a chair back device capable of being adjusted in a sliding mode and a seat.
Background
As a living tool which is indispensable for the living and working environment, the chair has higher and higher comfort requirements for the living and working environment, and has obvious requirements for improving the comfort and operability of the chair on the premise of working efficiency.
The chair back of the current general chair is of a structure with fixed integral form, and the lower end of the chair back is connected to the seat of the chair or the chassis; for some reclining chairs, the chair back can rotate backwards around the chassis, and when the chair back rotates backwards, the chair back falls backwards; the back of the chair can be moved relative to the back of the user under the condition of unchanged seat position, so that discomfort is caused; so that the back rubbing problem of people appears.
Disclosure of Invention
The utility model overcomes the defects in the prior art, and provides the chair back device and the chair which can be adjusted in a sliding way, and the joint surface between the back support and the central bearing seat is an arc surface, so that the back support assembly can slide up and down along the back support in an arc track; the lower end of the back support assembly simultaneously pushes the front top while the back support assembly slides downwards along the back support; when making back support back of body rotate, back support assembly can slide in order to support user's back relative back support, and back support assembly lower extreme front end can further support user's waist, increases the comfort.
The technical scheme of the utility model is realized as follows:
a chair back device capable of being adjusted in a sliding way comprises a back support and a back support component which is arranged on the back support in a sliding way; the back support assembly comprises a central bearing seat, wherein the central bearing seat is in front-back butt joint with the back support, and a sliding mechanism is arranged between the central bearing seat and the back support; the sliding mechanism comprises a guide seat arranged on one of the back support or the center bearing seat and a guide groove correspondingly arranged on the other of the back support or the center bearing seat; the joint surface between the back support and the central bearing seat is an arc surface, and the central bearing seat can slide up and down along the back support in an arc track; the back support assembly slides downwards along the back support, and simultaneously the lower end of the back support assembly is pushed forwards.
Preferably, the guide seat is arranged on the back support, and the guide groove is correspondingly concavely arranged on the rear end surface of the central bearing seat.
Preferably, the front end surface of the back support is an arc-shaped first arc joint surface, and the guide seat is arranged on the first arc joint surface; the rear end surface of the central bearing seat is an arc-shaped second arc-shaped joint surface, and the guide groove is concavely arranged on the second arc-shaped joint surface; the guide seat is embedded in the guide groove so that the first arc joint surface is in front-back butt joint with the second arc joint surface. The back support is connected with the central bearing bracket in a front-back tight manner, so that connecting traces are hidden, and the structure is attractive.
Preferably, guide posts which are spaced and protrude outwards are arranged at the side ends of the guide seats; arc-shaped guide grooves are correspondingly arranged on the side walls of the guide grooves; the guide seat is embedded in the guide groove, and the guide post is limited in the guide groove in a sliding way. Thereby further enabling the center bearing bracket and the back bracket to slide stably and smoothly.
Preferably, the back support is provided with a back support seat, the back support seat is provided with a central support seat, and the back support seat is provided with a central support seat; the upper end of the elastic resetting piece is connected with the back support, and the lower end of the elastic resetting piece is connected with the central bearing seat; the back support assembly slides down the back support to stretch the elastic restoring member. The elastic reset piece can provide the elasticity that the back support component reset for the back support component is along carrying out elastic sliding to the back support, uses the somatosensory more comfortable.
Preferably, the elastic reset piece is a spring; the bottom end of the central bearing seat, which is positioned in the accommodating groove, is provided with a connecting support plate, and the lower end of the spring is connected to the connecting support plate; the upper end of the back support is concavely provided with an avoidance groove, the upper end of the avoidance groove is provided with a transverse connecting cross rod, and the upper end of the spring is connected to the connecting cross rod.
Preferably, the device also comprises a locking adjusting mechanism, the locking adjusting mechanism comprises a locking groove arranged on the front end face of the back support, a lock tongue which is correspondingly arranged on the rear end face of the central bearing seat and can stretch back and forth, and a control assembly which is arranged on the central bearing seat and is used for controlling the lock tongue to stretch.
Preferably, the control assembly comprises a rotation adjusting rod horizontally arranged on the central bearing seat in a rotation mode and a longitudinal connecting rod connected to the rotation adjusting rod, and the upper end of the connecting rod is connected and matched with the lock tongue; the rotation adjusting rod rotates to drive the connecting rod to rotate back and forth so as to control the front and back extension of the lock tongue.
Preferably, the back support assembly further comprises an upper back frame and a lumbar support mounted on the central support bracket. Therefore, when the back support assembly slides downwards, the waist support can be ejected forwards.
A seat comprises a chassis and a chair back device capable of being adjusted in a sliding mode, wherein the bottom end of a back support is rotatably connected to the chassis.
The design starting point, the idea and the beneficial effects of the utility model adopting the technical scheme are as follows:
according to the chair back device capable of being adjusted in a sliding mode, the back support assembly is matched with the back support in a sliding mode, and the joint surface between the back support and the central bearing seat is an arc surface, so that the back support assembly can slide up and down along the back support in an arc track; then when the back support leans backwards relative to the base, the user leans against the back support assembly to simultaneously act on the back support assembly to slide downwards along the back support; so that the waist support at the bottom end of the back support assembly is correspondingly pushed out forwards to support the waist of a user; the waist of a user can not lose support in the backward tilting process, the whole back support assembly can slide forwards and downwards, and the phenomenon of back rubbing can be avoided; thereby making the user feel comfortable and increasing the comfort of use.
Drawings
FIG. 1 is a schematic perspective view of a back support and a back support assembly according to an embodiment of the present utility model;
FIG. 2 is a schematic perspective view showing a back support assembly sliding downward along a back support in an embodiment of the present utility model;
FIG. 3 is a schematic perspective view of an assembly of a back support and a back support assembly according to an embodiment of the present utility model;
FIG. 4 is a schematic perspective view of the front end of the back support according to an embodiment of the present utility model;
FIG. 5 is a schematic perspective view of the rear end of the back support assembly according to an embodiment of the present utility model;
FIG. 6 is a schematic perspective view of the back support assembly at another angle in an embodiment of the present utility model;
FIG. 7 is a schematic perspective view of a control assembly coupled to a center support base according to an embodiment of the present utility model;
FIG. 8 is a side view of a back bracket coupled to a back support assembly in an embodiment of the utility model;
fig. 9 is a schematic perspective view of a reclining chair according to an embodiment of the present utility model.
The reference numerals are as follows: a back support 1; a back support assembly 2; a central bearing bracket 3; a guide 4; a guide groove 5; a first arc junction 6; a second arc junction 7; a guide post 8; a guide groove 9; an arc-shaped guide block 10; a spring 11; a receiving groove 12; a connecting support plate 13; a relief groove 14; a connecting rail 15; a locking groove 16; a tongue 17; rotating the adjustment lever 18; a link 19; and a base A.
Description of the embodiments
In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.
In the description of the present utility model, the term "at least one" refers to one or more, unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The specific embodiments of the present utility model are as follows:
as shown in fig. 1 to 9, the present utility model provides a slidably adjustable seatback apparatus including a back bracket 1 and a back support assembly 2 slidably provided on the back bracket 1; the back support assembly 2 comprises a central bearing seat 3, an upper back frame and a waist support, wherein the upper back frame and the waist support are arranged on the central bearing seat 3; the central bearing bracket 3 is in front-back butt joint with the back bracket 1, and a sliding mechanism is arranged between the central bearing bracket 3 and the back bracket 1, and comprises a guide seat 4 arranged on the back bracket 1 and a guide groove 5 correspondingly arranged on the central bearing bracket 3; the guide seat 4 is in sliding fit in the guide groove 5; the joint surface between the back support 1 and the central bearing bracket 3 is an arc surface, and the central bearing bracket 3 can slide up and down along the back support 1 in an arc track; and the lower end of the back support component 2 is simultaneously ejected forward while the back support component 2 slides downwards along the back support 1.
As shown in fig. 3-8, the front end surface of the back support forms an arc-shaped first arc joint surface 6, the guide seats 4 are arranged at the left side and the right side of the first arc joint surface 6 in a mirror image mode, and the paths of the guide seats 4 are also arc-shaped along the longitudinal direction. The rear end surface of the center bearing seat 3 forms an arc-shaped second arc joint surface 7, and the guide groove 5 is arranged at the left side and the right side of the second arc joint surface 7 in a mirror image concave manner; the center bearing bracket 3 is abutted back and forth with the back bracket 1 so that the guide seat 4 is embedded in the guide groove 5 to enable the first arc joint surface 6 and the second arc joint surface 7 to be abutted back and forth and attached together. As shown in fig. 1-2, the back support 1 and the central bearing bracket 3 are assembled in a front-back manner, so that connecting traces can be hidden, and the structure is attractive.
Further, as shown in fig. 4-5, guide posts 8 are provided at the side ends of the guide seat 4 at intervals and protruding outwards along the length direction of the guide seat 4; correspondingly, an arc-shaped guide groove 9 is correspondingly arranged on the side wall of the guide groove 5; the method specifically comprises the following steps: an arc-shaped guide block 10 which is detachably connected is arranged in the guide groove 5, and the arc-shaped guide block 10 is connected with the central bearing bracket 3 by adopting a screw; the guide groove 9 is provided on a side end face of the arc-shaped guide block 10. During assembly, the arc-shaped guide block 10 is matched with the guide seat 4, so that the guide pillar 8 is penetrated in the guide groove 9, then the arc-shaped guide block 10 and the guide seat 4 are embedded in the guide groove 5 together, the arc-shaped guide block 10 and the central bearing seat 3 are fixedly connected, and a screw penetrates from the front end of the central bearing seat 3. So that the guide seat 4 is stably in sliding fit in the guide groove 5, and the guide post 8 is also in sliding limitation in the guide groove 9; so that the central bearing bracket 3 and the back bracket 1 slide stably and smoothly. And as shown in fig. 1 and 2, the first arc connection surface 6 and the second arc connection surface 7 are configured as follows: when the back support assembly 2 slides down along the back support 1, the lower end of the back support assembly 2 moves forward at the same time.
As shown in fig. 3 and 4, an elastic restoring element is further arranged between the back support 1 and the central bearing bracket 3, the elastic supporting element is two springs 11 which are arranged side by side and longitudinally, wherein a containing groove 12 is concavely arranged in the middle position of the central bearing bracket 3, and the springs 11 are embedded in the containing groove 12; a connecting support plate 13 is arranged at the bottom end of the central bearing bracket 3 positioned in the accommodating groove 12, and the lower end of the spring 11 is hung on the connecting support plate 13; the upper end of the back support 1 is concavely provided with an avoidance groove 14, the upper end of the avoidance groove 14 is provided with a transverse connecting cross rod 15, and the upper end of the spring 11 is hung on the connecting cross rod 15; after the back support 1 and the back support component 2 are assembled, the spring 11 is hidden in the accommodating groove 12 and cannot be exposed outside, so that the structure is attractive; and the spring 11 is configured to: when the back support assembly 2 slides down along the back support 1 from top to bottom, the spring 11 will be stretched to provide the elastic force for resetting the back support assembly 2, so that the back support assembly 2 slides elastically along the back support 1, and the user feel more comfortable.
As shown in fig. 4-7, the back support further comprises a locking adjusting mechanism, wherein the locking adjusting mechanism comprises a locking groove 16 arranged on the front end surface of the back support 1, a telescopic lock tongue 17 correspondingly arranged on the rear end surface of the center support seat 3, and a control component arranged on the center support seat 3 and used for controlling the expansion and the contraction of the lock tongue 17; the control assembly comprises a rotation adjusting rod 18 horizontally arranged on the central bearing bracket 3 in a rotation mode and a longitudinal connecting rod 19 connected to the rotation adjusting rod 18, and the upper end of the connecting rod 19 is connected and matched with the lock tongue 17; the connecting rod 19 can be driven to rotate back and forth by rotating the rotating adjusting rod 18, so that the front and back extension of the lock tongue 17 is controlled. As shown in fig. 1, when the back support assembly 2 is at the uppermost position, the lock tongue 17 is overlapped with the lock groove 16 in front-back direction, and the lock tongue 17 can be inserted into the lock groove 16, so that the back support assembly 2 is slidingly locked with the back support 1; the back support component 2 can slide relative to the back support 1 by controlling the lock tongue 17 to withdraw from the lock groove 16, and the adjustment is convenient.
The back elevation angle of the chassis of the common office chair is basically set to 18-25 degrees, and the back elevation angle is smaller. The comfort level is limited when lying in afternoon break. If the angle is set to be larger, the comfort level is met, the back stability of the chair cannot be met, and the chair can be turned over when the chair is turned back easily, so that personal risks are caused.
As shown in fig. 9, the present utility model further provides a seat comprising a base a to which the lower end of the back support 1 is rotatably connected, and then when the back support 1 reclines, a user resting on the back support assembly 2 will simultaneously slide the back support assembly 2 down the back support 1; so that the lumbar support at the bottom end of the back support assembly 2 will correspondingly be pushed forward to support the user's lumbar; the waist of the user can not lose support in the backward tilting process, the whole back support assembly 2 can slide forwards and downwards, and the phenomenon of back rubbing can be avoided; thereby making the user feel comfortable and increasing the comfort of use.
In the patent, after the back support assembly slides downwards along the arc-shaped track to change the track, the waist support below the back support assembly is not only sunken by 4CM, but also the angle of the back is changed by 9-11 degrees backwards; the position of the back support assembly also moves forward to change the angle; the phase change increases the back elevation angle of the chair by 10 degrees. However, the position of the back support assembly is changed to ensure that the center of gravity of the person sitting on the chair is moved forward; the stability of the back lying can also be satisfied. Plays a role in changing the safety of the backward leaning stability.
The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.
Claims (10)
1. A slidably adjustable chair back apparatus, characterized in that: comprises a back support and a back support component which is arranged on the back support in a sliding way; the back support assembly comprises a central bearing seat, wherein the central bearing seat is in front-back butt joint with the back support, and a sliding mechanism is arranged between the central bearing seat and the back support; the sliding mechanism comprises a guide seat arranged on one of the back support or the center bearing seat and a guide groove correspondingly arranged on the other of the back support or the center bearing seat; the joint surface between the back support and the central bearing seat is an arc surface, and the back support assembly can slide up and down along the back support in an arc track; the back support assembly slides downwards along the back support, and simultaneously the lower end of the back support assembly is pushed forwards.
2. The slidably adjustable chair back apparatus of claim 1, wherein: the guide seat is arranged on the back support, and the guide groove is correspondingly concavely arranged on the rear end surface of the central bearing seat.
3. The slidably adjustable chair back apparatus of claim 2, wherein: the front end face of the back support is an arc-shaped first arc joint face, and the guide seat is arranged on the first arc joint face; the rear end surface of the central bearing seat is an arc-shaped second arc-shaped joint surface, and the guide groove is concavely arranged on the second arc-shaped joint surface; the guide seat is embedded in the guide groove so that the first arc joint surface is in front-back butt joint with the second arc joint surface.
4. A slidably adjustable chair back apparatus according to claim 1 or 3, wherein: the side end of the guide seat is provided with guide posts which are spaced and protrude outwards; arc-shaped guide grooves are correspondingly arranged on the side walls of the guide grooves; the guide seat is embedded in the guide groove, and the guide post is limited in the guide groove in a sliding way.
5. The slidably adjustable chair back apparatus of claim 1, wherein: the elastic reset piece is longitudinally arranged between the back support and the central bearing seat, a containing groove is concavely formed in the middle of the rear end of the central bearing seat, and the elastic reset piece is embedded in the containing groove; the upper end of the elastic resetting piece is connected with the back support, and the lower end of the elastic resetting piece is connected with the central bearing seat; the back support assembly slides down the back support to stretch the elastic restoring member.
6. The slidably adjustable chair back apparatus of claim 5, wherein: the elastic reset piece is a spring; the bottom end of the central bearing seat, which is positioned in the accommodating groove, is provided with a connecting support plate, and the lower end of the spring is connected to the connecting support plate; the upper end of the back support is concavely provided with an avoidance groove, the upper end of the avoidance groove is provided with a transverse connecting cross rod, and the upper end of the spring is connected to the connecting cross rod.
7. The slidably adjustable chair back apparatus of claim 1, wherein: the locking adjusting mechanism comprises a locking groove arranged on the front end face of the back support, a lock tongue which is correspondingly arranged on the rear end face of the center support seat and can stretch back and forth, and a control assembly which is arranged on the center support seat and is used for controlling the lock tongue to stretch.
8. The slidably adjustable chair back apparatus of claim 7, wherein: the control assembly comprises a rotation adjusting rod horizontally arranged on the central bearing seat in a rotation mode and a longitudinal connecting rod connected to the rotation adjusting rod, and the upper end of the connecting rod is connected with the lock tongue in a matching mode; the rotation adjusting rod rotates to drive the connecting rod to rotate back and forth so as to control the front and back extension of the lock tongue.
9. The slidably adjustable chair back apparatus of claim 1, wherein: the back support assembly further includes an upper back frame and a lumbar support mounted on the central support bracket.
10. A seat, characterized in that: a chair back assembly comprising a chassis and a slidably adjustable chair back assembly as in any of claims 1-9, wherein the bottom end of the back support is rotatably attached to the chassis.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2023201964297 | 2023-02-01 | ||
| CN202320196429 | 2023-02-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220001301U true CN220001301U (en) | 2023-11-14 |
Family
ID=88674622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320338771.6U Active CN220001301U (en) | 2023-02-01 | 2023-02-17 | Chair back device capable of being adjusted in sliding mode and chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220001301U (en) |
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2023
- 2023-02-17 CN CN202320338771.6U patent/CN220001301U/en active Active
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