CN218605817U - Chair waist rest capable of being fixed in front and back - Google Patents
Chair waist rest capable of being fixed in front and back Download PDFInfo
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- CN218605817U CN218605817U CN202223112493.7U CN202223112493U CN218605817U CN 218605817 U CN218605817 U CN 218605817U CN 202223112493 U CN202223112493 U CN 202223112493U CN 218605817 U CN218605817 U CN 218605817U
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- ratchet
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- connecting seat
- chair
- lumbar support
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- 238000009434 installation Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
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- 238000004880 explosion Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Abstract
A chair waist support capable of being positioned in front and back comprises a base arranged on a chair backrest, wherein the base is provided with a fixing groove facing the back of a user, a positioning sleeve is fixedly connected in the fixing groove, and a plurality of ratchets facing the direction consistent with the opening direction of the positioning sleeve are arranged on the inner wall below the positioning sleeve; a waist rest connecting seat is movably connected in the positioning sleeve, a ratchet rod matched with the ratchet is arranged in the waist rest connecting seat, and the ratchet rod are mutually occluded for positioning. The utility model discloses overall structure is succinct, and the installation is simple, and the cost is lower to connected mode is reliable, has the waist of easily operating and leans on front and back gear fixing structure, can be by the wide application in the middle of adjusting the seat that has needs, especially office chair product to the waist.
Description
Technical Field
The utility model relates to the technical field of accessories of office seats, in particular to a chair waist rest which is used for office chair backrest part and can be fixed in front and back.
Background
The chair waist rest is a supporting component which is independent relative to the chair backrest, and the design and the manufacture aims at ensuring that the back of a person is not well relaxed if the person leans against the vertical chair backrest when the person is relaxed, particularly, the waist part is often easily suspended and cannot be supported, so that the lumbar of the user is influenced to a certain extent over time, and the lumbar disease is more easily induced to the user.
The office chair mainly aims at people who sit for a long time, the waist of the office chair is often required to be supported enough to reduce fatigue caused by long-time work of a user, the waist rest adjusting structure of the office chair is designed for the purpose, for example, in a waist rest adjusting mechanism disclosed in publication No. CN109907567A in 2019, 6, 21, a waist rest structure connected with a chair backrest in a swing rod mode is disclosed, the front and back position adjustment of the waist rest structure is realized by changing the angle between the swing rod and the backrest and assisting the up and down lifting structure of the swing rod, and different user requirements are met.
However, the above structure is relatively complex, the operation of changing the position is relatively complicated, and the manufacturing cost of the office chair is affected to some extent, so that there is still room for further optimization.
SUMMERY OF THE UTILITY MODEL
To the technical defect who exists in the background art, the utility model provides a chair waist that can decide shelves around can leans on has solved above-mentioned technical problem and has satisfied the actual demand, and concrete technical scheme is as follows:
a chair waist support capable of being positioned in front and back comprises a base arranged on a chair backrest, wherein the base is provided with a fixing groove facing the back of a user, a positioning sleeve is fixedly connected in the fixing groove, and a plurality of ratchets facing the direction consistent with the opening direction of the positioning sleeve are arranged on the inner wall below the positioning sleeve;
a waist rest connecting seat is movably connected in the positioning sleeve, a ratchet rod matched with the ratchet is arranged in the waist rest connecting seat, and a section of reset plane is arranged on the positioning sleeve close to an opening of the positioning sleeve;
the ratchet rod is hinged in a strip-shaped shaft hole which is formed in the waist-leaning connecting seat and is matched with the direction of the ratchets, the movable end of the ratchet rod is provided with a meshing portion matched with the ratchets, a reset portion is arranged adjacent to the meshing portion, a reset spring which is abutted against the waist-leaning connecting seat is arranged adjacent to the reset portion and is positioned at different sides of the meshing portion, and the movable end of the ratchet rod is hinged in an L-shaped shaft hole which is formed in the waist-leaning connecting seat.
As a further technical scheme of the utility model, the axle center that the ratchet pole is close to self is equipped with a reset section, the reset section is one section plane.
As a further technical scheme of the utility model, the ratchet pole with reset spring cup joints each other through locating the location axle on the ratchet pole expansion end and links to each other, be equipped with in the waist by the connecting seat with the inconsistent constant head tank of reset spring.
As a further technical scheme of the utility model, the innermost side of position sleeve's opening direction is equipped with the conflict portion adjacent with the ratchet, the height that highly is higher than of conflict portion the height of portion that resets when swing extreme position.
As a further technical scheme of the utility model, the position sleeve include with the inconsistent main barrel of fixed slot inner wall, and be equipped with ratchet, conflict portion, the plane that resets, with the curb plate that the lateral wall of main barrel closed the lid and connects.
As a further technical scheme of the utility model, the central authorities that the curb plate is close to main barrel body one side are provided with a guide block unanimous with main barrel body length direction, the waist leans on the one end that the connecting seat deviates from the fixed slot to be equipped with guide block complex recess.
As a further technical scheme of the utility model, the one end that the waist leans on the connecting seat to deviate from the fixed slot is equipped with the back connecting plate.
The utility model discloses the beneficial effect who has lies in: the waist rest front and rear gear fixing structure is simple in overall structure, simple to install, low in cost and reliable in connection mode, has a waist rest front and rear gear fixing structure which is easy to operate, and can be widely applied to seats, particularly office chair products, which need waist rest adjustment.
Drawings
Fig. 1 is a schematic sectional view of the whole structure of the chair lumbar support of the present invention.
Fig. 2 is a schematic view of a partial structure section of a waist rest of the chair of the present invention.
Fig. 3 is an explosion diagram of the local structure of the chair lumbar support of the present invention.
Wherein: the seat comprises a base 1, a fixing groove 10, a positioning sleeve 2, a ratchet 20, a reset plane 21, an abutting part 22, a main cylinder body 23, a side plate 24, a guide block 25, a lumbar support connecting seat 3, a strip-shaped shaft hole 30, an L-shaped shaft hole 31, a positioning groove 32, a groove 33, a backrest connecting plate 34, a ratchet rod 4, a meshing part 40, a reset part 41, a reset spring 42, a reset section 43 and a positioning shaft 44.
Detailed Description
The embodiments of the present invention will be described with reference to the accompanying drawings and related examples, but the embodiments of the present invention are not limited to the following examples, and the relevant essential components of the present invention related to the technical field should be regarded as known in the art, and can be known and grasped by those skilled in the art.
Referring to fig. 1 to 3, a chair lumbar support capable of being positioned in front and back directions comprises a base 1 arranged on a chair backrest, wherein the base 1 is provided with a fixing groove 10 facing the back of a user, a positioning sleeve 2 is fixedly connected in the fixing groove 10, and a plurality of ratchets 20 facing the same direction as the opening direction of the positioning sleeve 2 are arranged on the inner wall below the positioning sleeve 2;
a waist support connecting seat 3 is movably connected in the positioning sleeve 2, a ratchet rod 4 matched with the ratchet 20 is arranged in the waist support connecting seat 3, and a section of reset plane 21 is arranged at an opening of the positioning sleeve 2 close to the positioning sleeve;
the ratchet rod 4 is hinged in a strip-shaped shaft hole 30 formed in the lumbar support connecting seat 3 and adapted to the orientation of the ratchet 20, a meshing portion 40 matched with the ratchet 20 is arranged at the movable end of the ratchet rod 4, a reset portion 41 is arranged adjacent to the meshing portion 40, a reset spring 42 which is abutted against the lumbar support connecting seat 3 is arranged adjacent to the reset portion 41 and is positioned at different sides of the meshing portion 40, and the movable end of the ratchet rod 4 is hinged in an L-shaped shaft hole 31 formed in the lumbar support connecting seat 3.
The chair waist leans on structure is realized through following mode in the ascending gear fixing operation in front and back: the base 1 is fixed on a chair backrest, after the waist support connecting seat 3 connected with the ratchet rod 4 is movably connected with the positioning sleeve 2 provided with the ratchets 20 in a ratchet and ratchet mutually-meshed mode, the positioning sleeve 2 is fixedly connected with the fixing groove 10 of the base 1 to complete integral basic installation, and then the chair waist support is fixedly connected with the waist support connecting seat 3 to complete integral installation.
It is additionally pointed out that the ratchet rod 4 of the present invention, its shape is as shown in fig. 1 to fig. 3, and this name is only for explaining the function that this spare part played in the present invention, and not to the limit of this spare part name, the ratchet rod 4 is in the effect of the similar ratchet that the present invention played, only because the appearance is different with traditional ratchet, so named differently.
After the integral installation is completed, as long as the engaging portion 40 of the ratchet rod 4 is engaged with any one of the ratchets 20, the movable end of the ratchet rod 4 is limited in the L-shaped shaft hole 31 under the interference action of the return spring 42, specifically, the longitudinal end of the L-shaped shaft hole 31 needs to be consistent with the elastic direction of the return spring 42, so that the mutual engagement between the ratchet rod 4 and the ratchets 20 cannot be dislocated; when the gear needs to be adjusted, as long as the lumbar support connecting seat 3 is drawn along the opening direction of the positioning sleeve 2, the ratchet rod 4 can also slide upwards along the inclined surface of the ratchet 20 until the ratchet rod falls into the tooth groove of the next ratchet 20, and is pressed and positioned again by the return spring 42; when the lumbar support is required to return to the original position, the lumbar support connecting seat 3 is pulled outwards to the limit, so that the ratchet rod 4 slides to the return plane 21, at the moment, the meshing part 40 is not meshed with the ratchet 20, meanwhile, because the lumbar support connecting seat 3 is pulled to the limit, the axial center end and the movable end of the ratchet rod 4 slide further in the front-back adjusting direction of the lumbar support, the strip-shaped shaft hole 30 allows the axial center of the ratchet rod 4 to slide, the L-shaped shaft hole 31 is matched with the return spring 42, the movable end of the ratchet rod 4 is limited in the transverse hole position of the L-shaped shaft hole 31, the meshing part 40 is kept in a state of being separated from the ratchet 20 when the lumbar support connecting seat 3 slides back, until the return part 41 is abutted against the innermost end of the positioning sleeve 2, the ratchet rod 4 is pushed to be separated from the transverse hole position of the L-shaped shaft hole 31 and falls into the longitudinal hole position again, the ratchet rod 4 is meshed with the ratchet 20 again, and the lumbar support connecting seat 3 can perform front-back shift operation again.
Referring to fig. 2, in one preferred embodiment of the present invention, the ratchet rod 4 is provided with a reset section 43 near its axis, the reset section 43 is a section of plane, and the ratchet rod 4 can better cooperate with each other along the reset plane 21 by using the reset section 43, so that the engaging portion 40 of the movable end and the ratchet 20 are separated from each other, thereby facilitating the reset of the lumbar support connecting seat 3.
Referring to fig. 2, one of the preferred embodiments of the present invention, the ratchet rod 4 and the return spring 42 are connected to each other by the positioning shaft 44 on the movable end of the ratchet rod 4, the positioning groove 32 which is inconsistent with the return spring 42 is provided in the lumbar support connecting seat 3, and by the above structure, the return spring 42 can be well limited and not separated in a simple manner, so as to ensure that the positioning and the return operation of the ratchet rod 4 are reliable enough.
Referring to fig. 2 and 3, in one of the preferred embodiments of the present invention, the innermost side of the opening direction of the positioning sleeve 2 is provided with an abutting portion 22 adjacent to the ratchet 20, the height of the abutting portion 22 is higher than the height of the reset portion 41 at the swing limit position, and by using the abutting portion 22, the positioning sleeve 2 can better reset and cooperate with the waist by the connecting seat 3 and the ratchet rod 4, thereby ensuring that the ratchet rod 4 can be jacked to complete the final reset.
Referring to fig. 1 to 3, in one of the preferred embodiments of the present invention, the positioning sleeve 2 includes a main cylinder 23 abutting against the inner wall of the fixing groove 10, and a side plate 24 provided with the ratchet 20, the reset plane 21 and the abutting portion 22 and connected to the side wall of the main cylinder 23 in a covering manner, so that the above structure can facilitate the assembly of the whole body, and the ratchet rod 4 can be assembled more easily.
Referring to fig. 1 to 3, in one of the preferred embodiments of the present invention, the central portion of the side plate 24 near one side of the main cylinder 23 is provided with a guide block 25 consistent with the length direction of the main cylinder 23, one end of the waist support connecting seat 3 deviating from the fixing groove 10 is provided with a groove 33 matched with the guide block 25, so that the waist support connecting seat 3 can be more stably and smoothly switched between the fixed gear and the reset state, thereby ensuring the reliability of the fixed gear structure.
Referring to fig. 2 and 3, in one preferred embodiment of the present invention, a back connection plate 34 is provided at an end of the lumbar support connection seat 3 away from the fixing groove 10, for being fixedly connected with a lumbar support of a chair.
The utility model discloses the beneficial effect who has lies in: the waist rest adjusting device has the advantages of simple overall structure, simplicity in installation, lower cost and reliable connection mode, has a waist rest front and rear gear fixing structure which is easy to operate, and can be widely applied to seats, particularly office chair products, which have requirements on waist rest adjustment.
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 (7)
1. A chair waist support capable of being positioned in front and back comprises a base arranged on a chair backrest, wherein the base is provided with a fixing groove facing the back of a user;
a waist rest connecting seat is movably connected in the positioning sleeve, a ratchet rod matched with the ratchet is arranged in the waist rest connecting seat, and a section of reset plane is arranged on the positioning sleeve close to an opening of the positioning sleeve;
the ratchet rod articulates locate the waist lean on in the connecting seat with in the strip shaft hole that the ratchet suited towards, the expansion end of ratchet rod be equipped with ratchet complex meshing portion, be equipped with the portion of reseing adjacent to meshing portion, be equipped with adjacent to the portion of reseing and lean on the reset spring that the connecting seat is inconsistent with the waist with meshing portion in different sides, the expansion end of ratchet rod articulates in locating the L type shaft hole in the connecting seat is leaned on to the waist.
2. The chair lumbar support capable of being shifted forward and backward according to claim 1, wherein the ratchet rod is provided with a reset section near the axis thereof, and the reset section is a plane.
3. The chair lumbar support capable of being shifted forwards and backwards according to claim 1, wherein the ratchet rod and the return spring are connected with each other in a sleeved manner through a positioning shaft arranged at the movable end of the ratchet rod, and a positioning groove which is abutted against the return spring is arranged in the lumbar support connecting seat.
4. The chair lumbar support capable of being shifted forward and backward according to claim 1, wherein an interference portion adjacent to the ratchet is provided at an innermost side in an opening direction of the positioning sleeve, and a height of the interference portion is higher than a height of the reset portion at a swing limit position.
5. The chair lumbar support capable of being positioned in front and back directions according to claim 4, wherein the positioning sleeve comprises a main cylinder body abutting against the inner wall of the fixing groove, and a side plate provided with the ratchet teeth, the abutting portion, the reset plane and the side wall close cover connected with the main cylinder body.
6. A chair lumbar support capable of being positioned in front and back directions as claimed in claim 5, wherein a guide block is provided at the center of one side of said side plate near said main cylinder body, said guide block being aligned with the length direction of said main cylinder body, and a groove for engaging with said guide block is provided at the end of said lumbar support connecting seat facing away from said fixing groove.
7. A chair lumbar support capable of being shifted forward and backward as claimed in claim 1, wherein a backrest connecting plate is provided at an end of the lumbar support connecting seat facing away from the fixing groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223112493.7U CN218605817U (en) | 2022-11-23 | 2022-11-23 | Chair waist rest capable of being fixed in front and back |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223112493.7U CN218605817U (en) | 2022-11-23 | 2022-11-23 | Chair waist rest capable of being fixed in front and back |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218605817U true CN218605817U (en) | 2023-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223112493.7U Active CN218605817U (en) | 2022-11-23 | 2022-11-23 | Chair waist rest capable of being fixed in front and back |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218605817U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116784617A (en) * | 2023-06-08 | 2023-09-22 | 永艺家具股份有限公司 | a kind of seat |
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2022
- 2022-11-23 CN CN202223112493.7U patent/CN218605817U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116784617A (en) * | 2023-06-08 | 2023-09-22 | 永艺家具股份有限公司 | a kind of seat |
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