CN107865537B - Lifting structure of chair headrest - Google Patents
Lifting structure of chair headrest Download PDFInfo
- Publication number
- CN107865537B CN107865537B CN201610844760.XA CN201610844760A CN107865537B CN 107865537 B CN107865537 B CN 107865537B CN 201610844760 A CN201610844760 A CN 201610844760A CN 107865537 B CN107865537 B CN 107865537B
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- guide groove
- headrest
- groove
- straight
- lifting seat
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/38—Support for the head or the back for the head
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
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- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Seats For Vehicles (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
The invention provides a lifting structure of a chair headrest, which is erected on a chair back and comprises a lifting seat, a headrest bottom straight support and an elastic positioning rod; the upper end of the headrest bottom straight support is connected with a headrest, when the headrest bottom straight support is assembled on the lifting seat, a positioning end of the elastic positioning rod fixedly arranged on the headrest bottom straight support can be guided into the guide groove in the lifting seat downwards by virtue of material elasticity, so that the headrest bottom straight support and the positioning end can synchronously carry out positionable lifting sliding adjustment in the guide groove in the lifting seat, thus simplifying assembly operation among components and being beneficial to reducing cost and mass production.
Description
Technical Field
The present invention relates to a lifting structure of a headrest, and more particularly, to a lifting structure of a headrest of a chair mounted on a backrest of the chair.
Background
The design of the chair has gradually emphasized the ergonomics, so there are many background technologies in the market, such as the patent US6,709,059 applied to the lifting adjustment of the chair back. The above patent uses a straight swingable tooth (Cog) entering a chute opening of a chute base to move in each chute for lifting operation, and the tooth (Cog) can return to the position of the axial center after swinging by gravity. However, the above-mentioned patent components are complicated and troublesome to install, which relatively increases the cost and is not suitable for mass production, so that the conventional lifting structure does have room for further improvement.
The present invention is to design a member that can be easily installed for the lifting structure of chair headrest to solve the problems faced by the above patent.
Disclosure of Invention
The present invention is directed to a lifting structure of a headrest for a chair, which is mounted on a chair back, so as to simplify the components and the assembly operation between the components, thereby reducing the cost and mass production.
To achieve the above object, the present invention provides a lifting structure of a chair headrest, for being erected on a chair back, comprising:
a lifting seat detachably disposed on the chair back, the lifting seat comprising: the inclined inlet guide groove is positioned at the position close to the top of one side separated by the axial center of the lifting seat and extends downwards from the top of the lifting seat in an inclined way; the main straight guide groove is positioned on the same side of the inclined inlet guide groove and extends downwards from the upper part to the lower part of the lifting seat; the bent guide groove is positioned between the lower part of the inclined inlet guide groove and the upper part of the main straight guide groove, so that the inclined inlet guide groove is communicated with the main straight guide groove; and a plurality of stepped guide grooves which are sequentially arranged from the lower part to the upper part of the lifting seat on the other opposite side of the main straight guide groove, wherein each stepped guide groove is provided with a stopping groove point, the upper part of the uppermost stepped guide groove is communicated with the upper part of the main straight guide groove and defines an upper end groove point, and the lower part of the lowermost stepped guide groove is communicated with the lower part of the main straight guide groove and defines a lower end groove point;
a headrest bottom straight support, the upper end of which is connected with a headrest so that the headrest can synchronously lift and slide along with the headrest bottom straight support, and the headrest bottom straight support is provided with a straight chute which is detachably sleeved on the lifting seat; and
the upper end of the elastic locating rod is fixedly arranged on the axial center in the straight sliding groove of the headrest bottom straight support, and the lower end of the elastic locating rod forms a locating end which can be elastically kept on the axial center in the straight sliding groove by virtue of the elasticity of the material of the elastic locating rod;
when the headrest bottom is directly assembled on the lifting seat, the positioning end of the elastic positioning rod can be guided into the inclined inlet guide groove of the lifting seat by virtue of the elasticity of materials, and then slides downwards to pass through the bent guide groove of the lifting seat and be guided into the main straight guide groove;
after the positioning end of the elastic positioning rod is guided into the main straight guide groove of the lifting seat, the positioning end slides downwards along the main straight guide groove to stop at the lower end groove point of the main straight guide groove; when the headrest bottom straight support is pulled to enable the positioning end to synchronously slide upwards, the positioning end can leave the lower end groove point and slide to a stopping groove point stopped on the stepped guide groove along the lowermost stepped guide groove to form a lowest height position; when the headrest bottom straight support is continuously pulled to enable the positioning end to synchronously slide upwards, the positioning end can leave from a stopping groove point of the next step guide groove and slide upwards to a stopping groove point of the last step guide groove so as to adjust the height position of the headrest bottom straight support;
when the headrest bottom straight support is pulled to enable the positioning end to synchronously slide upwards to move to the upper end groove point of the uppermost stepped guide groove, the positioning end directly slides downwards along the stepped guide groove by virtue of elasticity of materials to enter the main straight guide groove and slide to stop at the lower end groove point, so that the next sliding adjustment operation can be carried out.
The lifting structure of chair headrest, wherein: the bottom surface of the curved guide groove further forms a descending slope towards the bottom surface of the inclined inlet guide groove, and the bottom surface of the curved guide groove further forms a steep descending slope with a drop towards the bottom surface of the main straight guide groove.
The lifting structure of chair headrest, wherein: the headrest bottom straight support is also internally provided with a stabilizing piece, the stabilizing piece is provided with a fixing hole and a fixing groove, the upper end of the elastic positioning rod can be embedded and fixed in the fixing hole, and the upper section of the elastic positioning rod can be locally embedded and fixed in the fixing groove, so that the elastic positioning rod can be kept on the axial center of the lifting seat by means of material elasticity.
The lifting structure of chair headrest, wherein: the lifting seat is also locked with a positioning piece into a whole, and the positioning piece is provided with a buckle straight rod and a buckle cross rod.
The lifting structure of chair headrest, wherein: the buckle straight rod and the buckle cross rod of the positioning piece can be clamped and fixed on the upper part of a frame of the chair back.
Compared with the prior art, the lifting structure 1 of the chair headrest has the following advantages:
(1) the lifting structure of the chair headrest comprises three main components, namely the lifting seat, the headrest bottom straight support and the elastic positioning rod, and the simple assembly of a small number of components is favorable for reducing the cost and realizing mass production.
(2) The lifting structure of the chair headrest and the chair back can be combined separately, thereby being beneficial to the convenience of loading and conveying for manufacturers.
(3) The curved guide groove of the lifting seat has a bottom surface with a height difference, and a steep falling slope with a difference is formed towards the bottom surface of the main straight guide groove, so that the positioning end is difficult to reversely slide back to the inclined inlet guide groove and fall off after being guided into the main straight guide groove from the curved guide groove.
Drawings
Fig. 1 is a combined perspective view illustrating an embodiment of a headrest lifting structure for a chair according to the present invention.
Fig. 2 is an exploded perspective view illustrating an embodiment of a headrest lifting structure for a chair according to the present invention.
Fig. 3 is an exploded perspective view of an embodiment of the headrest bottom straight support and the lifting seat of the present invention.
Fig. 4 is a perspective view of an embodiment of the elastic positioning rod and the lifting seat of the present invention.
Fig. 5 is a schematic front plan view of fig. 4.
Fig. 6 is a schematic cross-sectional view P-P of fig. 5.
Description of reference numerals: 1-a lifting structure; 10-a lifting seat; 11-an inclined inlet guide groove; 12-a main straight guide groove; 13-bending the guide groove; 131-a descending ramp; 132-steep decline; 14-a stepped guide groove; 15-stop slot point; 16-upper end slot point; 17-lower end slot point; 20-straight support of the headrest bottom; 21-straight chute; 30-elastic positioning rods; 31-a positioning end; 32-upper local; 40-a stabilizer; 41-fixing holes; 42-fixed groove; 50-a positioning member; 51-a snap straight rod; 52-snap crossbar; 2-chair back; 201-a frame; 3-headrest.
Detailed Description
Referring to fig. 1 and 2, the present invention provides a lifting structure 1 of a chair headrest, for being mounted on a chair back 2, comprising a lifting seat 10, a headrest bottom straight support 20 and an elastic positioning rod 30.
The lifting seat 10 is detachably mounted on the backrest 2, and as shown in fig. 4 and 5, a plurality of guide grooves including an inclined inlet guide groove 11, a main straight guide groove 12, a curved guide groove 13 and a plurality of stepped guide grooves 14 are designed in the lifting seat 10.
As shown in fig. 4 and 5, the inclined inlet guide 11 is located near the top of the side separated by the axial center (as shown by the Y axis in fig. 3 and 5) of the lifting base 10 and extends downward from the top of the lifting base 10; the main straight guide groove 12 is located on the same side of the inclined inlet guide groove 11 and extends downwards from the upper part to the lower part of the lifting seat 10; the curved guide groove 13 is located between the lower portion of the slant entry guide groove 11 and the upper portion of the main straight guide groove 12, so that the slant entry guide groove 11 is communicated with the main straight guide groove 12, as shown in fig. 5 and 6, wherein the bottom surface of the curved guide groove 13 further forms a descending slope 131 toward the bottom surface of the slant entry guide groove 11, and further forms a steep descending slope 132 with a drop (as shown by a height H in fig. 6) toward the bottom surface of the main straight guide groove 12; and a plurality of stepped guide grooves 14 arranged in sequence from the lower portion to the upper portion of the lifting base 10 on the opposite side of the main straight guide groove 12, wherein each stepped guide groove 14 has a stop groove point 15, the upper portion of the uppermost stepped guide groove 14 communicates with the upper portion of the main straight guide groove 12 and defines an upper end groove point 16, and the lower portion of the lowermost stepped guide groove 14 communicates with the lower portion of the main straight guide groove 12 and defines a lower end groove point 17.
The lifting seat 10 is further locked with a positioning member 50 into a whole, but not to limit the invention, the positioning member 50 has a fastening straight rod 51 and a fastening cross rod 52, so that the fastening straight rod 51 and the fastening cross rod 52 of the positioning member 50 can be further clamped on the upper portion of a frame 201 of the chair back 2, and can be applied to the chair backs 2 with various shapes and sizes.
The upper end of the headrest bottom straight support 20 is connected with a headrest 3 so that the headrest 3 can synchronously lift and slide along with the headrest bottom straight support 20, the headrest bottom straight support 20 is provided with a straight sliding groove 21 for being detachably arranged on the lifting seat 10, and when the headrest bottom straight support 20 and the lifting seat 10 are combined into a whole, the lifting structure 1 and the chair back 2 are combined into a whole.
The upper end of the elastic positioning rod 30 is fixedly disposed at an axial center (as shown by the Y axis in fig. 3 and 5) in the straight chute 21 of the headrest bottom straight support 20, and the lower end thereof forms a positioning end 31, the positioning end 31 can be elastically retained at the axial center (as shown by the Y axis in fig. 3 and 5) in the straight chute 21 by the elasticity of the material of the elastic positioning rod 30, so that the positioning end 31 can swing left and right (as shown by the X arrow in fig. 3) at the axial center (as shown by the Y axis in fig. 3 and 5) by the elastic force.
The straight sliding groove 21 of the headrest bottom straight support 20 is further provided with a stabilizing member 40, but not limiting the invention, the stabilizing member 40 has a fixing hole 41 and a fixing groove 42, so that the upper end of the elastic positioning rod 30 can be embedded and fixed in the fixing hole 41, and an upper section part 32 of the elastic positioning rod 30 can be embedded and fixed in the fixing groove 42, so that the elastic positioning rod 30 can be held on the axial center (as shown by the Y axis of fig. 3 and 5) of the lifting seat 10 by the elasticity of the material.
Referring to fig. 2 to 5, when the headrest bottom straight support 20 is assembled on the lifting seat 10, the positioning end 31 of the elastic positioning rod 30 can be guided into the inclined inlet guide groove 11 of the lifting seat 10 by the elastic bending of the material (as shown by the arrow X direction in fig. 3) away from the axial center (as shown by the axis Y in fig. 3 and 5), as shown in fig. 5 and 6, the positioning end 31 slides downward again and climbs upward toward the descending slope 131 of the curved guiding groove 13 by elastically returning to the axial center (as shown by the Y-axis in fig. 3 and 5) (as shown by the arrow X in fig. 3), and is guided into the main straight guide groove 12 over the steep falling slope 132, because the steep falling slope 132 has a height difference (as shown by the height H in fig. 6) toward the bottom surface of the main straight guide groove 12, the positioning end 31 is located on the bottom surface of the main straight guide groove 12 lower than the steep falling slope 132, and is not easy to slide back to the inclined inlet guide groove 11.
Referring to fig. 1, 4 and 5, after the positioning end 31 of the elastic positioning rod 30 is introduced into the main straight guiding groove 12 of the lifting seat 10, the positioning end 31 slides downward along the main straight guiding groove 12 to stop at the lower end groove point 17 (as shown in position a of fig. 1 and 5).
When the headrest bottom straight support 20 is pulled to make the positioning end 31 slide upwards synchronously, the positioning end 31 leaves the lower end slot point 17 (as shown in position a of fig. 1 and 5) and slides along the lowest stepped guide slot 14 to the stopping slot point 15 (as shown in position B of fig. 1 and 5) stopped on the stepped guide slot 14 to form a lowest height position.
By the same operation manner as described above, the positioning end 31 can be slid from the "B" stop groove point 15 of the next-step guide groove 14 and stopped at the "C" stop groove point 15 of the previous-step guide groove 14; or a "D" stopping groove point 15 sliding from the "C" stopping groove point 15 and stopping at the upper step guide groove 14; or slide from the "D" stop slot point 15 and stop on the "E" stop slot point 15 of the upper step guide groove 14 to complete the height position adjustment.
When the headrest bottom straight support 20 is pulled further to slide the positioning end 31 from the "E" stop slot point 15 to the uppermost upper slot point 16 (as shown in fig. 1 and fig. 5 at position F), the positioning end 31 can slide directly along the stepped guide slot 14 by the elasticity of the material to enter the main straight guide slot 12 and stop at the lower slot point 17 (as shown in fig. 1 and fig. 5 at position a), so that the next sliding adjustment operation of the height position of the headrest 3 can be performed.
Compared with the prior art, the lifting structure 1 of the chair headrest has the following advantages:
(1) the lifting structure 1 of the chair headrest of the present invention is composed of three main components, namely, the lifting seat 10, the headrest bottom straight support 20 and the elastic positioning rod 30, and the simple assembly of a small number of components is advantageous for cost reduction and mass production.
(2) The lifting structure 1 of the chair headrest of the invention and the chair back 2 can be combined separately, which is beneficial to the convenience of loading and transporting for manufacturers.
(3) The curved guiding groove 13 of the lifting seat 10 of the present invention has a bottom surface with a height difference (as shown by the height H in fig. 6), and a steep falling slope 132 with a height difference (as shown by the height H in fig. 6) is formed toward the bottom surface of the main straight guiding groove 12, so that the positioning end 31 is not easy to slide back to the inclined inlet guiding groove 11 and fall off after being guided into the main straight guiding groove 12 from the curved guiding groove 13.
The foregoing is merely a preferred embodiment of this invention, which is intended to be illustrative, not limiting; those skilled in the art will appreciate that many variations, modifications, and even equivalent variations are possible within the spirit and scope of the invention as defined in the appended claims.
Claims (4)
1. The utility model provides a lifting structure of chair headrest for erect and use on a back of the chair, its characterized in that contains:
a lifting seat detachably disposed on the chair back, the lifting seat comprising: the inclined inlet guide groove is positioned at the position close to the top of one side separated by the axial center of the lifting seat and extends downwards from the top of the lifting seat in an inclined way; the main straight guide groove is positioned on the same side of the inclined inlet guide groove and extends downwards from the upper part to the lower part of the lifting seat; the bent guide groove is positioned between the lower part of the inclined inlet guide groove and the upper part of the main straight guide groove, so that the inclined inlet guide groove is communicated with the main straight guide groove; and a plurality of stepped guide grooves which are sequentially arranged from the lower part to the upper part of the lifting seat on the other opposite side of the main straight guide groove, wherein each stepped guide groove is provided with a stopping groove point, the upper part of the uppermost stepped guide groove is communicated with the upper part of the main straight guide groove and defines an upper end groove point, and the lower part of the lowermost stepped guide groove is communicated with the lower part of the main straight guide groove and defines a lower end groove point;
a headrest bottom straight support, the upper end of which is connected with a headrest so that the headrest can synchronously lift and slide along with the headrest bottom straight support, and the headrest bottom straight support is provided with a straight chute which is detachably sleeved on the lifting seat; and
the upper end of the elastic locating rod is fixedly arranged on the axial center in the straight sliding groove of the headrest bottom straight support, and the lower end of the elastic locating rod forms a locating end which can be elastically kept on the axial center in the straight sliding groove by virtue of the elasticity of the material of the elastic locating rod;
when the headrest bottom is directly assembled on the lifting seat, the positioning end of the elastic positioning rod can be guided into the inclined inlet guide groove of the lifting seat by virtue of the elasticity of materials, and then slides downwards to pass through the bent guide groove of the lifting seat and be guided into the main straight guide groove;
after the positioning end of the elastic positioning rod is guided into the main straight guide groove of the lifting seat, the positioning end slides downwards along the main straight guide groove to stop at the lower end groove point of the main straight guide groove; when the headrest bottom straight support is pulled to enable the positioning end to synchronously slide upwards, the positioning end can leave the lower end groove point and slide to a stopping groove point stopped on the stepped guide groove along the lowermost stepped guide groove to form a lowest height position; when the headrest bottom straight support is continuously pulled to enable the positioning end to synchronously slide upwards, the positioning end can leave from a stopping groove point of the next step guide groove and slide upwards to a stopping groove point of the last step guide groove so as to adjust the height position of the headrest bottom straight support;
when the headrest bottom straight support is pulled to enable the positioning end to synchronously slide upwards to move to the upper end groove point of the uppermost stepped guide groove, the positioning end directly slides downwards along the stepped guide groove by virtue of elasticity of materials to enter the main straight guide groove and slide to stop at the lower end groove point so as to perform the next sliding adjustment operation;
the bottom surface of the curved guide groove further forms a descending slope towards the bottom surface of the inclined inlet guide groove, and the bottom surface of the curved guide groove further forms a steep descending slope with a drop towards the bottom surface of the main straight guide groove.
2. The headrest lifting structure for chairs according to claim 1, wherein: the headrest bottom straight support is also internally provided with a stabilizing piece, the stabilizing piece is provided with a fixing hole and a fixing groove, the upper end of the elastic positioning rod can be embedded and fixed in the fixing hole, and the upper section of the elastic positioning rod can be locally embedded and fixed in the fixing groove, so that the elastic positioning rod can be kept on the axial center of the lifting seat by means of material elasticity.
3. The headrest lifting structure for chairs according to claim 1, wherein: the lifting seat is also locked with a positioning piece into a whole, and the positioning piece is provided with a buckle straight rod and a buckle cross rod.
4. The headrest lifting structure for chairs according to claim 3, wherein: the buckle straight rod and the buckle cross rod of the positioning piece can be clamped and fixed on the upper part of a frame of the chair back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610844760.XA CN107865537B (en) | 2016-09-23 | 2016-09-23 | Lifting structure of chair headrest |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610844760.XA CN107865537B (en) | 2016-09-23 | 2016-09-23 | Lifting structure of chair headrest |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107865537A CN107865537A (en) | 2018-04-03 |
| CN107865537B true CN107865537B (en) | 2020-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610844760.XA Active CN107865537B (en) | 2016-09-23 | 2016-09-23 | Lifting structure of chair headrest |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107865537B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108836004A (en) * | 2018-07-27 | 2018-11-20 | 东莞市伟宏五金塑胶制品有限公司 | headrest synchronous lifting device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6132001A (en) * | 2000-02-08 | 2000-10-17 | Su; Wen-Fa | Adjustment device for an arm of a chair |
| US6709059B1 (en) * | 2000-07-27 | 2004-03-23 | Sava Cvek | Adjustable non-biased positioning mechanism |
| CN2645530Y (en) * | 2003-05-28 | 2004-10-06 | 林良安 | Clothing hanger suitable for back of chair |
-
2016
- 2016-09-23 CN CN201610844760.XA patent/CN107865537B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6132001A (en) * | 2000-02-08 | 2000-10-17 | Su; Wen-Fa | Adjustment device for an arm of a chair |
| US6709059B1 (en) * | 2000-07-27 | 2004-03-23 | Sava Cvek | Adjustable non-biased positioning mechanism |
| CN2645530Y (en) * | 2003-05-28 | 2004-10-06 | 林良安 | Clothing hanger suitable for back of chair |
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| Publication number | Publication date |
|---|---|
| CN107865537A (en) | 2018-04-03 |
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