CN205030841U - Headrest mechanism of dress on office chair back frame - Google Patents
Headrest mechanism of dress on office chair back frame Download PDFInfo
- Publication number
- CN205030841U CN205030841U CN201520776612.XU CN201520776612U CN205030841U CN 205030841 U CN205030841 U CN 205030841U CN 201520776612 U CN201520776612 U CN 201520776612U CN 205030841 U CN205030841 U CN 205030841U
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- sleeve
- connecting portion
- expansion link
- ball
- back rest
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Abstract
The utility model discloses a headrest mechanism of dress on office chair back frame, including the support of resting the head on, headrest support lower extreme both sides are equipped with two connecting portion, and every connecting portion swing joint is in back frame upper end one side, and every connecting portion puts up middle part one side with the back and still is connected through a spacing subassembly, spacing subassembly includes sleeve, telescopic link, ball and gag lever post, and a telescopic link pot head is in the sleeve, and the telescopic link other end hinges on the connecting portion, be equipped with the spacing hole of a rectangular shape on the telescopic link other end, the one end that the telescopic link was kept away from to the sleeve articulates in back frame middle part one side, and the ball is in between telescopic link surface and the sleeve internal surface, and the telescopic link embolias sleeve one end surface and is equipped with a spacing recess and cooperatees with the ball, and telescopic internal surface is equipped with one and steps down the groove and cooperate with the ball, and the one end of gag lever post links firmly in back frame middle part one side, and the other end of gag lever post is equipped with a clasp joint portion and catches hold of with a hook and be in on the spacing hole of rectangular shape, the utility model discloses the headrest angle of elevation is adjustable, and convenient to use.
Description
Technical field
The utility model relates to office chair manufacturing technology field, especially a kind of head pillow mechanism be contained on office chair backrest frame.
Background technology
Be provided with in the office chair of headrest common, usual headrest and backrest are fixed together, the elevation angle of namely resting the head on cannot adjust separately, be difficult to make them satisfied for office clan, the multi-function ofice chair that particularly some backrest tiltable are whole, if cannot adjust separately at the elevation angle of sitting and facing upward headrest under both states of lying, headrest is just difficult to meet the demand of sitting and facing upward two kinds of using states of lying simultaneously.
Therefore, people start to design some makes the headrest elevation angle can carry out relative to office chair backrest the structure that adjusts, as disclosed on May 28th, 2008, a patent No. is ZL200720121218.8, name is called the utility model patent of " office chair headrest and chair back connecting structure ", connection bracket is provided with between its chair back and headrest, connection bracket comprises upper support frame and lower support frame, upper support frame is fixedly connected with headrest, and lower support frame is fixedly connected with the chair back; The top of lower support frame is provided with a hemispherical depression; Upper support frame is provided with support, and protrude the protrusion forming hemisphere face shape in the middle of supporting plate backward, the protrusion of hemisphere face shape is embedded in the hemispherical depression of lower support frame; A hemispherical briquetting is equipped with in concave position before hemisphere face shape protrusion; The hemisphere face shape protrusion of lower support frame top, supporting plate, hemispherical briquetting three are respectively equipped with through hole, and three utilizes the screw bolt and nut knob through through hole to be locked together, and wherein the through hole of supporting plate hemisphere face shape protrusion is vertical elongated hole.This headrest, relative to office chair backrest adjustable, allows user can reach the using state be comparatively satisfied with, but needs to unclamp nut and locking nut during adjustment, and regulating the speed of its headrest elevation angle is comparatively slow, uses comparatively inconvenience.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of head pillow mechanism be contained on office chair backrest frame, headrest tiltable, and operation rapidly, easy to use.
For achieving the above object, the technical solution of the utility model is: a kind of head pillow mechanism be contained on office chair backrest frame, comprise headrest support, both sides, headrest support lower end are provided with two connecting portions, each connecting portion is movably connected in side, back rest upper end, each connecting portion is also connected by a limit assembly with side in the middle part of back rest, described limit assembly comprises a sleeve, one expansion link, one ball and a gag lever post, expansion link one end is enclosed within sleeve, the expansion link other end is hinged on described connecting portion, the expansion link other end is also provided with a strip spacing hole, described sleeve is hinged on side in the middle part of back rest away from one end of expansion link, ball is between expansion link outer surface and sleeve interior surface, expansion link is inserted in sleeve one end outer surface and is provided with a limited impression and matches with ball, the inner surface of sleeve is provided with a slot to make way and matches with ball, one end of gag lever post is connected in side in the middle part of back rest, the other end of gag lever post is provided with a clasp joint portion and is hooked on described strip spacing hole.
Further improvement, in the middle part of described back rest, side is connected a L shape connector, and described sleeve is provided with a U-shaped articulated section away from one end of expansion link, and described U-shaped articulated section is hinged on one end of L shape connector.Be hinged with side in the middle part of facilitating described sleeve and back rest.
Preferred described slot to make way is semi-spherical grooves.
Preferred described limited impression near described connecting portion side to away from its degree of depth of described connecting portion side by deeply progressively shoaling.
Further, two described connecting portions are equipped with an arc shrinkage pool, both sides, back rest upper end are respectively provided with an arc-shaped connecting rod, and each arc-shaped connecting rod is engaged on a described arc shrinkage pool.Each like this connecting portion and side, back rest upper end are formed and are rotatably connected.
The utility model is provided with two connecting portions due to both sides, headrest support lower end, each connecting portion is movably connected in side, back rest upper end, each connecting portion is also connected by a limit assembly with side in the middle part of back rest, during pusher head pillow rack, each connecting portion is by the spacing of limit assembly and reset, headrest support can be realized locate under two kinds of different elevations angle, namely headrest support switches between two kinds of different elevations angle states, so that adapt to both postures of sitting and lie, and operation rapidly, easy to use.
Accompanying drawing explanation
Fig. 1 is the utility model stereogram;
Fig. 2 is the utility model limit assembly front view;
Fig. 3 is the A-A sectional view of Fig. 2.
Detailed description of the invention
Below in conjunction with accompanying drawing and concrete embodiment, the utility model is described in further detail.
Shown in Fig. 1 to Fig. 3, a kind of head pillow mechanism be contained on office chair backrest frame, comprise headrest support 10, both sides, headrest support 10 lower end are provided with two connecting portions 1, each connecting portion 1 is movably connected in side, back rest 20 upper end, and each connecting portion 1 is also connected by a limit assembly 30 with side in the middle part of back rest 20.
Described limit assembly 30 comprises sleeve 31, expansion link 32, ball 33 and a gag lever post 34, expansion link 32 one end is enclosed within sleeve 31, expansion link 32 other end is hinged on described connecting portion 1, expansion link 32 other end is also provided with a strip spacing hole 321, described sleeve 31 is hinged on side in the middle part of back rest 20 away from one end of expansion link 32, in the middle part of back rest 20, side is connected a L shape connector 21, and described sleeve 31 is provided with a U-shaped articulated section 311 away from one end of expansion link 32 and is hinged on one end of L shape connector 21; Ball 33 is between expansion link 32 outer surface and sleeve 31 inner surface, expansion link 32 is inserted in sleeve 31 one end outer surface and is provided with a limited impression 322 and matches with ball 33, the inner surface of sleeve 31 is provided with a slot to make way 312 and matches with ball 33, one end of gag lever post 34 is connected in side in the middle part of back rest 20, and the other end of gag lever post 34 is provided with a clasp joint portion 341 and is hooked on described strip spacing hole 321.
Preferred described slot to make way 312 is semi-spherical grooves.
Described limited impression 322 near described connecting portion 1 side to away from its degree of depth of described connecting portion 1 side by deeply progressively shoaling.
Two described connecting portions 1 are equipped with an arc shrinkage pool 11, and both sides, back rest 20 upper end are respectively provided with an arc-shaped connecting rod 22, and each arc-shaped connecting rod 22 is engaged on described arc shrinkage pool 11.
When needing adjustment headrest support 10 elevation angle, urged clockwise headrest support 10, two connecting portions 1 just promote two expansion links 32 and move down, and then oppositely promote headrest support 10, now two connecting portions 1 pull again two expansion links 32 to move up, now, ball 33 is just in limited impression 322 away between described connecting portion 1 side and described slot to make way 312, ball 33 blocks expansion link 32 pairs of expansion links 32 and carries out spacing, expansion link 32 is just undertaken spacing by connecting portion 1 pair of headrest support 10, makes headrest support 10 be in a kind of elevation angle state.
When switch head pillow rack 10 is in another kind of elevation angle state to needs again, urged clockwise headrest support 10 again, two connecting portions 1 promote again two expansion links 32 and move down, ball 33 just falls into limited impression 322 near between described connecting portion 1 side and described slot to make way 312, now ball 33 does not carry out spacing to expansion link 32, when oppositely promoting headrest support 10 again, two expansion links 32 move up, matched with described strip spacing hole 321 by the clasp joint portion 341 of gag lever post 34 again, make headrest support 10 be positioned another kind of elevation angle state.Therefore headrest support 10 can switch fast between two kinds of elevation angle states, and simple to operate, speed is fast.
Below be only the utility model preferred embodiment, those skilled in the art makes by claim the protection domain that equivalent change all falls into this case.
Claims (5)
1. one kind is contained in the head pillow mechanism on office chair backrest frame, comprise headrest support, it is characterized in that: both sides, headrest support lower end are provided with two connecting portions, each connecting portion is movably connected in side, back rest upper end, each connecting portion is also connected by a limit assembly with side in the middle part of back rest, described limit assembly comprises a sleeve, one expansion link, one ball and a gag lever post, expansion link one end is enclosed within sleeve, the expansion link other end is hinged on described connecting portion, the expansion link other end is also provided with a strip spacing hole, described sleeve is hinged on side in the middle part of back rest away from one end of expansion link, ball is between expansion link outer surface and sleeve interior surface, expansion link is inserted in sleeve one end outer surface and is provided with a limited impression and matches with ball, the inner surface of sleeve is provided with a slot to make way and matches with ball, one end of gag lever post is connected in side in the middle part of back rest, the other end of gag lever post is provided with a clasp joint portion and is hooked on described strip spacing hole.
2. a kind of head pillow mechanism be contained on office chair backrest frame according to claim 1, it is characterized in that: in the middle part of described back rest, side is connected a L shape connector, described sleeve is provided with a U-shaped articulated section away from one end of expansion link, and described U-shaped articulated section is hinged on one end of L shape connector.
3. a kind of head pillow mechanism be contained on office chair backrest frame according to claim 1, is characterized in that: described slot to make way is semi-spherical grooves.
4. a kind of head pillow mechanism be contained on office chair backrest frame according to claim 1, is characterized in that: described limited impression near described connecting portion side to away from its degree of depth of described connecting portion side by deeply progressively shoaling.
5. a kind of head pillow mechanism be contained on office chair backrest frame according to any one of Claims 1-4, it is characterized in that: two described connecting portions are equipped with an arc shrinkage pool, both sides, back rest upper end are respectively provided with an arc-shaped connecting rod, and each arc-shaped connecting rod is engaged on a described arc shrinkage pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520776612.XU CN205030841U (en) | 2015-10-09 | 2015-10-09 | Headrest mechanism of dress on office chair back frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520776612.XU CN205030841U (en) | 2015-10-09 | 2015-10-09 | Headrest mechanism of dress on office chair back frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205030841U true CN205030841U (en) | 2016-02-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520776612.XU Active CN205030841U (en) | 2015-10-09 | 2015-10-09 | Headrest mechanism of dress on office chair back frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205030841U (en) |
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2015
- 2015-10-09 CN CN201520776612.XU patent/CN205030841U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |