CN218105353U

CN218105353U - Chair headrest structure

Info

Publication number: CN218105353U
Application number: CN202222131731.2U
Authority: CN
Inventors: 周子杨; 魏雅文
Original assignee: Zhongshan Tianci Precision Mould Manufacturing Co ltd
Current assignee: Zhongshan Tianci Precision Mould Manufacturing Co ltd
Priority date: 2022-08-13
Filing date: 2022-08-13
Publication date: 2022-12-23
Anticipated expiration: 2032-08-13

Abstract

The utility model discloses a chair headrest structure, including the pillow shell, be provided with the slide rail on the pillow shell, be equipped with a plurality of recesses on the slide rail, install on the slide rail and can be on the slide rail gliding sliding seat, be provided with the arc flexible piece on the sliding seat, be provided with on the arc flexible piece and connect the ear with the recess complex, when the sliding seat slides, connect the ear and can push up in proper order and paste the recess. The movable seat is provided with the arc-shaped flexible piece, the arc-shaped flexible piece is provided with the connecting lug, the connecting lug can be matched with the groove on the slide rail in a telescopic manner, a user only needs to pull the pillow shell upwards or downwards to realize the function of adjusting the pillow shell up and down, and the structure is simple and feasible; simultaneously, this practicality adopts the form of circular arc transition can avoid the arc flexible member atress to too concentrate a bit, makes the atress disperse more, has guaranteed the intensity of arc flexible member when reducing the material.

Description

Chair headrest structure

Technical Field

The utility model relates to a headrest structure, in particular to a chair headrest structure.

Background

The up-and-down adjusting structure of the existing chair headrest mostly adopts a complex structure to complete up-and-down adjusting action, and the problems that structural parts are easy to damage, the maintenance is difficult after the parts are damaged, the maintenance cost is high and the like often occur. Or a button structure which is not suitable for controlling the height of the headrest is adopted to achieve the purpose of adjusting the headrest, the button needs to be pressed down to adjust the height of the headrest of the chair for multiple times, or two persons are matched to achieve the ideal height of the headrest.

An adjusting device of a chair headrest disclosed in patent document No. CN216438861U includes a sliding body for fixing the chair headrest and a fixing body for connecting a back frame; a matching structure is arranged between the sliding body and the fixed body; the matching structure comprises a guide part arranged in the sliding body and an insertion part formed by extending upwards from the fixed body; the insertion part is movably matched and connected with the guide part; the surface of the insertion part opposite to the guide part is a guide-in surface which is provided with a limit groove; the bottom surface of the limiting groove opposite to the guide part is provided with a plurality of convex parts and concave parts at intervals, and the convex parts and the concave parts are in smooth transition connection; the surface of the guide part opposite to the inserting part is a guide surface, at least one part of the guide surface is also provided with an elastic element, the elastic element comprises an installation shell, a return spring and a pressing part, and when the sliding body stands still relative to the fixed body, the telescopic end of the elastic element is pressed on the concave part. The technology indeed reduces the production cost to a certain extent and reduces the risk of part damage. However, the following disadvantages still exist: it makes the chair headrest accomplish the action of gliding from top to bottom through elastic element's deformation and reset, and elastic element includes reset spring and suppress the piece again, and this kind of adjust the structure from top to bottom is comparatively complicated, and the condition that elasticity descends or even elasticity became invalid appears easily after reset spring pressed the bullet many times, influences holistic upper and lower regulation effect.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims to provide a: the headrest structure can be adjusted up and down, is simple in adjustment structure, and can ensure elastic strength.

The utility model discloses a technical scheme that the solution problem adopted is: the utility model provides a chair headrest structure, includes the pillow shell, be provided with the slide rail on the pillow shell, be equipped with a plurality of recesses on the slide rail, install on the slide rail and can be on the slide rail gliding sliding seat, be provided with the arc flexible piece on the sliding seat, be provided with on the arc flexible piece with the recess complex connects the ear, when the sliding seat slides, connect the ear can push up in proper order and paste the recess.

The arc-shaped flexible part is S-shaped and is divided into an upper arc which is bent inwards and a lower arc which is bent outwards, and the connecting lug is arranged on an arc-shaped surface of the upper arc, which is close to the sliding rail.

The movable seat middle part is provided with the rectangle frame, the setting of arc flexible piece is in the rectangle frame, connect the ear to stretch out the rectangle frame.

The sliding rail is characterized in that protruding ribs are arranged on the movable seat and located on two sides of the rectangular frame, concave strips matched with the protruding ribs are arranged on two sides of the sliding rail, the protruding ribs are inserted into the concave strips, and the end face of the rectangular frame is attached to the surface of the sliding rail.

Still include arc fixed plate, arc fixed plate's upper end is provided with the first installation department of mutual symmetry, the both sides of sliding seat be provided with first installation department complex second installation department, first installation department is connected through the pivot with the second installation department.

The first installation part is provided with a first rotating hole, the second installation part is provided with a second rotating hole corresponding to the first rotating hole, and the rotating shaft sequentially penetrates through the first rotating hole and the second rotating hole.

Still be provided with first locating hole on the first installation department, the second installation department be provided with the second locating hole that first locating hole corresponds, install the bulb plunger on the first locating hole, bulb plunger part stretches out first locating hole, the laminating of bulb plunger's extension is in on the second locating hole.

And a cover plate is arranged on the sliding rail and covers the position right above the movable seat.

The sliding rail is provided with a first screw hole, the cover plate is provided with a second screw hole matched with the first screw hole, and the first screw hole is connected with the second screw hole through a screw.

The beneficial effects of the utility model are that: the movable seat is provided with the arc-shaped flexible piece, the arc-shaped flexible piece is provided with the connecting lug, the connecting lug can be matched with the groove on the slide rail in a telescopic manner, a user only needs to pull the pillow shell upwards or downwards to realize the function of adjusting the pillow shell up and down, and the structure is simple and feasible; simultaneously, this practicality adopts the form of circular arc transition can avoid the arc flexible member atress to too concentrate a bit, makes the atress disperse more, has guaranteed the elastic strength of arc flexible member when reducing the material.

Drawings

The invention will be further explained with reference to the drawings and the detailed description.

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a front view of the arcuate flex member;

FIG. 4 is a rear view of the arcuate flex member;

FIG. 5 is a top view of the arcuate flex member;

FIG. 6 is an enlarged view of the structure at A in FIG. 2;

FIG. 7 is a second schematic structural view of the preferred embodiment of the present invention;

fig. 8 is a third schematic structural view of the preferred embodiment of the present invention;

in the figure: the structure comprises a pillow shell 1, a pillow shell 2, a sliding rail 3, a groove 3, a movable seat 4, an arc-shaped flexible part 5, a connecting lug 6, a rectangular frame 7, a convex bone 8, a concave strip 9, an arc-shaped fixing plate 10, a first mounting part 11, a second mounting part 12, a first rotating hole 13, a second rotating hole 14, a first positioning hole 15, a second positioning hole 16, a ball plunger 17, a cover plate 18, a first screw hole 19 and a second screw hole 20.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the terms such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the terms in the present invention by combining the specific contents of the technical solution.

Referring to fig. 1 to 8, a headrest structure for a chair includes a headrest case 1 and an arc-shaped fixing plate 10 rotatably connected to the headrest case 1. The pillow case 1 is butterfly-shaped, two sides are bent outwards, and the middle is concave inwards.

The pillow case 1 is provided with a slide rail 2, the slide rail 2 is provided with a plurality of grooves 3, and the grooves 3 are distributed at intervals in a strip shape from top to bottom. The sliding rail 2 is provided with a movable seat 4 capable of sliding up and down on the surface of the sliding rail 2, and the movable seat 4 is provided with an arc-shaped flexible part 5.

The movable seat 4 wholly adopts ABS material or PP material, 4 middle parts of movable seat are provided with rectangle frame 7, arc flexible member 5 sets up in the rectangle frame 7. Still be provided with protruding bone 8 on the sliding seat 4, protruding bone 8 is located the both sides of rectangle frame 7, protruding bone 8 highly be less than the height of

rectangle frame

7, 2 both sides of slide rail are provided with the spacing that is higher than slide rail 2 surfaces, form between the spacing with protruding bone 8 complex concave 9, protruding bone 8 inserts behind the concave 9, the terminal surface of rectangle frame 7 can with slide rail 2 surface laminating.

The arc-shaped flexible part 5 is S-shaped and is divided into an upper arc which is bent inwards and a lower arc which is bent outwards, the stress can be dispersed in the form of arc transition, the stress is prevented from being concentrated on one point to damage the arc-shaped flexible part 5, and the strength of the flexible part is guaranteed while the materials are reduced. Because arc-shaped flexible piece 5 adopts ABS material or PP material, ABS material and PP material all have the advantage that high elasticity and toughness are stronger, can both give 5 better toughness, resilience and life of arc-shaped flexible piece, and movable seat 4 is at the slip in-process, and arc-shaped flexible piece 5 can receive the extrusion on slide rail 2 surface and deform, be provided with on the arc-shaped flexible piece 5 with recess 3 complex connects ear 6, connects ear 6 to set up go up the arc and be close to on the arcwall face of slide rail 2 and protrusion (stretch out) the terminal surface of rectangle frame 7, movable seat 4 are at the slip in-process, connect ear 6 can follow the deformation of arc-shaped flexible piece 5 and reset and push up in proper order and paste in recess 3, with the flexible cooperation of recess 3, paste when connecting ear 6 top during recess 3, movable seat 4 can fix and do not drop on pillow shell 1.

Arc fixed plate 10 is the Y form, and the upper end is provided with two forks, is provided with the first installation department 11 of mutual symmetry on the fork, the both sides of sliding seat 4 be provided with 11 complex second installation departments 12 of first installation department, first installation department 11 is connected through the pivot with second installation department 12. Be provided with first commentaries on classics hole 13 (have the screw thread) on the first installation department 11, second installation department 12 be provided with first commentaries on classics hole 13 corresponds second commentaries on classics hole 14 (unthreaded), the utility model discloses a screw is adopted in the pivot, and screw tip part is unthreaded, the screw with behind the 13 spiro unions in first commentaries on classics hole, most advanced unthreaded part stretches into hole 14 is changeed to the second, connects do not influence rotation between them when arc-shaped fixing plate 10 and sliding seat 4.

Still be provided with first locating hole 15 on the first installation department 11, second installation department 12 be provided with the second locating hole 16 that first locating hole 15 corresponds, install bulb plunger 17 on the first locating hole 15, bulb plunger 17 part protrusion in first locating hole 15, bulb plunger 17's bulge laminating is in on the second locating hole 16, second locating hole 16 distributes around bulb plunger 17 direction of rotation in proper order, and pillow shell 1 rotates the in-process on ARC fixed plate 10, and bulb plunger 17 passes through in proper order second locating hole 16 realizes the regulation of 1 pivoted polygamy of pillow shell.

And a cover plate 18 is arranged on the slide rail 2, and the cover plate 18 covers the position right above the movable seat 4. The back of sliding seat 4 is provided with two limiting plates of mutual symmetry, the limiting plate sets up in the both sides of rectangle frame 7 and is higher than the terminal surface in the outside of rectangle frame 7, distance between two limiting plates equals the width of apron 18, the thickness of apron 18 equals the height of the terminal surface of the relative rectangle frame 7 of limiting plate, when apron 18 lid closes at sliding seat 4, apron 18 can close between two limiting plates, on rectangle frame 7, the upper surface and the limiting plate terminal surface parallel and level of apron 18 make sliding seat 4 and arc fixed plate 10 smooth connection when protecting the arc flexible member 5 in the rectangle frame 7. The upper end and the lower end of the sliding rail 2 are both provided with a first screw hole 19, a second screw hole 20 matched with the first screw hole 19 is arranged on the cover plate 18, and the first screw hole 19 is connected with the second screw hole 20 through a screw.

The above is only the preferred embodiment of the present invention, not limiting the patent scope of the present invention, all of which are under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct or indirect application is included in other related technical fields in the patent protection scope of the present invention.

Claims

1. The utility model provides a chair headrest structure, includes pillow shell (1), be provided with slide rail (2) on pillow shell (1), install on slide rail (2) and can be on slide rail (2) gliding sliding seat (4), its characterized in that:

be equipped with a plurality of recesses (3) on slide rail (2), be provided with arc flexible member (5) on movable seat (4), be provided with on arc flexible member (5) with recess (3) complex connects ear (6), when movable seat (4) slided, connect ear (6) and can push up in proper order and paste recess (3).

2. The chair headrest structure as claimed in claim 1, wherein:

the arc-shaped flexible part (5) is S-shaped and is divided into an upper arc which is bent inwards and a lower arc which is bent outwards, and the connecting lug (6) is arranged on an arc-shaped surface of the upper arc, which is close to the sliding rail.

3. The chair headrest structure of claim 1, wherein:

the middle of the movable seat (4) is provided with a rectangular frame (7), the arc-shaped flexible piece (5) is arranged in the rectangular frame (7), and the connecting lug (6) extends out of the rectangular frame (7).

4. The chair headrest structure according to claim 3, wherein:

be provided with protruding bone (8) on sliding seat (4), protruding bone (8) are located the both sides of rectangle frame (7), slide rail (2) both sides be provided with protruding bone (8) complex concave strip (9), protruding bone (8) insert concave strip (9), the terminal surface of rectangle frame (7) with slide rail (2) surface laminating.

5. The chair headrest structure of claim 1, wherein:

still include arc fixed plate (10), the upper end of arc fixed plate (10) is provided with first installation department (11) of mutual symmetry, the both sides of sliding seat (4) be provided with first installation department (11) complex second installation department (12), first installation department (11) are connected through the pivot with second installation department (12).

6. The chair headrest structure according to claim 5, wherein:

be provided with first commentaries on classics hole (13) on first installation department (11), second installation department (12) be provided with second commentaries on classics hole (14) that first commentaries on classics hole (13) correspond, first commentaries on classics hole (13) and second commentaries on classics hole (14) are passed in proper order in the pivot.

7. The headrest structure for chairs according to claim 6, wherein:

still be provided with first locating hole (15) on first installation department (11), second installation department (12) be provided with second locating hole (16) that first locating hole (15) correspond, install bulb plunger (17) on first locating hole (15), bulb plunger (17) part stretches out first locating hole (15), the extension laminating of bulb plunger (17) is in on second locating hole (16).

8. The chair headrest structure of claim 1, wherein:

a cover plate (18) is installed on the sliding rail (2), and the cover plate (18) covers the movable seat (4).

9. The chair headrest structure as claimed in claim 8, wherein:

the sliding rail (2) is provided with a first screw hole (19), the cover plate (18) is provided with a second screw hole (20) matched with the first screw hole (19), and the first screw hole (19) is connected with the second screw hole (20) through a screw.