CN214072595U

CN214072595U - Backrest structure for a seat

Info

Publication number: CN214072595U
Application number: CN202021369624.8U
Authority: CN
Inventors: 黄子源
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-14
Filing date: 2020-07-13
Publication date: 2021-08-31
Anticipated expiration: 2030-07-13
Also published as: CN112716192A; CN112716193A; CN214072584U; CN112716190A; CN213940235U; CN214230619U; CN213940229U; CN212591176U; CN214230617U; CN214382301U

Abstract

The utility model provides a back structure for seat, includes back frame, angle modulation spare and linking arm, back rest base portion is articulated with seat body one-level for straight upset, angle modulation spare sets up at back rest top and upwards extends and form the pillow frame, and angle modulation spare passes through the linking arm and is articulated with seat body second grade, is used for crooked upset the utility model discloses can be rotatory with the linkage of linking arm, back frame through angle modulation spare to and dismantle linking arm and locking angle modulation spare, realize two kinds of different motion states and make the user obtain different visual angles when lying down, can realize nimble installation, conversion in the manufacturing.

Description

Backrest structure for a seat

Technical Field

The utility model relates to a seat back, concretely relates to back structure for seat.

Background

For a seat capable of being turned and rotated, when a backrest is completely opened, the seat is generally in two states, one state is completely laid, a user mainly leans to the upper part in the view angle of the seat, the other state is completely opened, the head can be directly bent and turned in the backrest opening process, the seat is slowly laid in the laying process, and the view angle of the user always leans to the front. For example, in a headrest-linked seat cushion linkage seat of patent No. 201811130170.6, although linkage between a headrest and a backrest can be realized in the overturning process, the linkage cannot be realized by the gentle lying of the angle, the structure is complex, the production cost is high, and flexible conversion of two sets of products in production and manufacturing cannot be realized; a reclining folding chair, patent No. 201822153006.9, has a back rest that is hinged at a single level, allowing only full reclining, with the back rest fully open with the upward viewing angle.

Therefore, there is a high necessity for a backrest structure for a seat that can be flexibly installed and converted in manufacturing to realize two movement states and different viewing angles.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to above-mentioned problem, provide one kind can be in the nimble conversion of manufacturing, realize two kinds of motion states, user state's a back structure for seat.

The utility model provides a technical scheme that its technical problem adopted as follows: a back structure for seat, including back frame, angle adjusting part and linking arm, back frame bottom is articulated with seat body one-level for straight upset, angle adjusting part sets up at back frame top and upwards extends and form the pillow frame, and angle adjusting part passes through the linking arm and is articulated with seat body second grade, is used for crooked upset.

In order to facilitate the nimble manufacturing of the seat of realizing two kinds of motion states, angle modulation spare is equipped with two and sets up respectively in the back frame both sides outside, and angle modulation spare has end to end's first regulating arm and second regulating arm, and the contained angle of the direction that makes progress of first regulating arm and second regulating arm is the major angle, has contained angle and contained angle department between first regulating arm and the second regulating arm and is equipped with first hinge hole, first regulating arm forms headrest frame along the one end of keeping away from the second regulating arm, forms the regulation angle between second regulating arm and the linking arm, the second regulating arm is kept away from first hinge hole direction along the second regulating arm and is equipped with fixed orifices and second hinge hole in proper order.

In order to facilitate flexible installation and hinging, a first connecting block is fixed on one side of the top of the backrest frame, which is close to the angle adjusting piece, and the top of the first connecting block is hinged to the angle adjusting piece through a first hinge hole.

For the convenience of being connected of back frame and seat body, back frame bottom is equipped with second connecting block and installation piece, second connecting block one end and back frame fixed connection and its other end are articulated with the one end of installation piece and its articulated department is first pin joint, and the one end and the seat body fixed connection of second connecting block are kept away from to the installation piece.

In order to facilitate the realization of overturning when gently opening, the bottom of the connecting arm is hinged with the bottom of the mounting block, the hinged position of the connecting arm is a second hinged point, and the height of the first hinged point is always higher than that of the second hinged point.

In order to facilitate the overturning when the backrest frame is opened gently, the top of the mounting block is provided with a connecting sheet which extends upwards and is close to the backrest frame in an inclined mode, and the top of the connecting sheet is hinged to one end, close to the connecting sheet, of the second connecting block.

In order to facilitate installation with the installation piece and the seat body, the lateral part that the back frame was kept away from to the installation piece has the joint groove, the joint groove is used for the fixed seat body of joint.

In order to adapt to the mounting structure of the backrest frames with different sizes and specifications, the fixing holes or the second hinge holes are provided with a plurality of holes.

In order to facilitate the installation of the connecting arm, the connecting arm is arranged between the backrest frame and the angle adjusting piece, and the top of the connecting arm is hinged with the angle adjusting piece through a second hinge hole.

In order to adapt to the mounting structure of the backrest frames with different sizes and specifications, the bottom of the mounting block is provided with a plurality of second hinge holes for being hinged with the bottom of the connecting arm.

The utility model has the advantages that: the utility model discloses can be rotatory with the linkage of linking arm, back frame through angle adjusting part to and dismantle linking arm and locking angle adjusting part, realize two kinds of different motion states and make the user obtain different visual angles when lying, can realize nimble installation, conversion in the manufacturing.

Drawings

The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the angle adjusting member of the present invention;

fig. 3 is a schematic structural view of the mounting block of the present invention;

fig. 4 is a side view of the installation structure of the present invention with the seat body and the head frame;

fig. 5 is a side view of the first motion state of the present invention in connection with the installation of the seat body and the head frame;

fig. 6 is a side view of the present invention in a second state of motion when mounted with respect to the seat body and the head frame;

wherein: 1. a backrest frame; 11. a first connection block; 12. a second connecting block; 13. mounting blocks; 131. a first hinge point; 132. a second hinge point; 133. connecting sheets; 134. a clamping groove; 2. an angle adjusting member; 21. A pillow frame; 22. a first adjustment arm; 23. a second adjustment arm; 24. a first hinge hole; 26. a fixing hole; 27. A second hinge hole; 28. a head frame; 3. a connecting arm; 4. a seat body.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be clearly and clearly defined.

The first embodiment is as follows:

as shown in fig. 1 to 4, a backrest structure for a seat comprises a backrest frame 1, an angle adjusting member 2 and a connecting arm 3, wherein the bottom of the backrest frame 1 is hinged with a seat body 4 at one stage, for straight turning, the common reversal seat can reverse by only one-stage connection, directly reverses around a connection point, the reverse rotation angle is larger, the visual angle of the user is inclined upwards after the reverse rotation, the angle adjusting piece 2 is arranged at the top of the backrest frame 1 and extends upwards to form a pillow frame 21, in order to facilitate better head rest, the top of the pillow frame 21 extends upwards and is connected with a head frame 28, and the angle adjusting piece 2 is hinged with the seat body 4 in a secondary mode through a connecting arm 3 and is used for bending and overturning, in detail, under the linkage of the connecting arm 3, the backrest frame 1 is turned gently, and after the backrest frame 21 is turned, the headrest frame 21 is deviated to the vertical shape through the angle adjusting key, so that the visual angle of a user is deviated to the front.

Referring to fig. 2, angle modulation 2 is equipped with two and sets up respectively in the back frame 1 both sides outside, and angle modulation 2 has end to end's first regulating arm 22 and second regulating arm 23, has contained angle and contained angle department between first regulating arm 22 and the second regulating arm 23 and is equipped with first hinge hole 24, first regulating arm 22 forms headrest frame 21 along the one end of keeping away from second regulating arm 23, forms the angle of regulation between second regulating arm 23 and the linking arm 3, second regulating arm 23 keeps away from first hinge hole 24 direction along second regulating arm 23 and is equipped with fixed orifices 26 and second hinge hole 27 in proper order, for the convenience of installation, linking arm 3 sets up between back frame 1 and angle modulation 2, linking arm 3 top is articulated with angle modulation 2 through second hinge hole 27.

A first connecting block 11 is fixed on one side of the top of the backrest frame 1 close to the angle adjusting part 2, the top of the first connecting block 11 is hinged with the angle adjusting part 2 through a first hinge hole 24, an upward included angle between a first adjusting arm 22 and a second adjusting arm 23 is a reflex angle, namely, the angle range of the adjusting angle can be ensured to be within 0-180 degrees, when the backrest frame 1 is not opened, the adjusting angle is an obtuse angle, when the backrest frame 1 is completely opened, the adjusting angle is an acute angle, of course, only the adjusting foot can be reduced, the obtuse angle and the acute angle can be both, the headrest frame 21 can be turned upwards slightly upwards, a second connecting block 12 and a mounting block 13 are arranged at the bottom of the backrest frame 1, one end of the second connecting block 12 is fixedly connected with the backrest frame 1, the other end of the second connecting block is hinged with one end of the mounting block 13, the hinged position of the mounting block is a first hinge point 131, one end of the mounting block 13 far away from the second connecting block 12 is fixedly connected with the seat body 4, the top of the mounting block 13 is provided with a connecting piece 133 which is inclined and extends upwards and close to the backrest frame 1, the top of the connecting piece 133 is hinged to one end of the second connecting block 12 close to the connecting piece 133, the side part of the mounting block 13 far away from the backrest frame 1 is provided with a clamping groove 134, the clamping groove 134 is used for clamping and fixing the seat body 4, the bottom of the connecting arm 3 is hinged to the bottom of the mounting block 13, the hinged part of the connecting arm is a second hinge point 132, and the height of the first hinge point 131 is always higher than that of the second hinge point 132.

Referring to fig. 5, when the first motion mode is realized, in the manufacturing process, the connecting arm 3 is not used, only the fixing hole 26 of the angle adjusting member 2 is locked by the locking screw, the angle of the adjusting angle is not changed, the push rod pulls the bottom of the backrest frame 1, the backrest frame 1 is directly overturned and opened around the first hinge point 131, so that the user can lie down, and the visual field of the user is deviated to the upper side.

Referring to fig. 6, when the second movement mode is implemented, the angle adjusting member 2 is hinged to the top of the connecting arm 3 through the second hinge hole 27, the fixing hole 26 is vacant, no locking screw is installed, the installation block 13 is fixed on the seat body 4 through the snap groove 134, the backrest frame 1 is hinged through the connecting piece 133 of the second connecting block 12, the hinged position is the first hinge point 131, the bottom of the connecting arm 3 of the installation block 13 is hinged to the seat body 4 through the installation block 13, the hinged position is the second hinge point 132, when the backrest frame 1 moves, the electric push rod at the bottom of the backrest frame 1 pulls the bottom of the backrest frame 1 to turn over and open the backrest frame 1 backwards, at this time, the angle adjusting member 2, the connecting arm 3 and the backrest frame 1 are linked through the position of the first hinge hole 24, the position of the second hinge hole 27, the position of the first hinge point 131 and the position of the second hinge point 132, and the angle of the backrest frame 1 is gradually, therefore, when the seat is completely opened, the visual angle of the user is still deviated to the front, and the user can read books, computers and rest conveniently.

Example two:

different from the first embodiment, in order to adjust the rotation angle of the back rest chair or the connecting arm 3, the fixing holes 26 or the second hinge holes 27 are provided with a plurality of second hinge holes 27, in order to adjust the degree of the angle and facilitate the installation and adjustment of the chairs with different specifications, and the bottom of the installation block 13 is provided with a plurality of second hinge holes 27 for being hinged with the bottom of the connecting arm 3.

It should be noted that, in the utility model, each hinge hole that indicates, the pin joint is the articulated mode commonly used in this technical field, all connects through pivot, rotating tube, sleeve pipe etc. and the no explanation is done here.

Compared with the prior art, the utility model discloses can be rotatory with the linkage of linking arm 3, back frame 1 through angle adjusting part 2 to and dismantle linking arm 3 and locking angle adjusting part 2, realize two kinds of different motion states and make the user obtain different visual angles when lying, can realize nimble installation, conversion in the manufacturing.

In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "disposed," "provided," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.

Claims

1. Backrest structure for a seat, characterized in that: including back frame, angle adjusting part and linking arm, back frame bottom is articulated with seat body one-level for straight upset, angle adjusting part sets up at back frame top and upwards extends and form the pillow frame, and angle adjusting part is articulated through linking arm and seat body second grade for crooked upset.

2. The backrest structure for a seat according to claim 1, characterized in that: the angle adjusting part is equipped with two and sets up respectively in the back frame both sides outside, and the angle adjusting part has end to end's first regulating arm and second regulating arm, and the contained angle of the direction that makes progress of first regulating arm and second regulating arm is the reflex angle, has contained angle and contained angle department between first regulating arm and the second regulating arm and is equipped with first hinge hole, first regulating arm forms the headrest frame along the one end of keeping away from the second regulating arm, forms the regulation angle between second regulating arm and the linking arm, the second regulating arm is kept away from first hinge hole direction along the second regulating arm and is equipped with fixed orifices and second hinge hole in proper order.

3. The backrest structure for a seat according to claim 1, characterized in that: one side that the back frame top is close to angle adjusting part is fixed with first connecting block, first connecting block top is articulated through first hinge hole and angle adjusting part.

4. The backrest structure for a seat according to claim 2, characterized in that: the backrest frame bottom is equipped with second connecting block and installation piece, second connecting block one end and backrest frame fixed connection and its other end are articulated and its articulated department is first pin joint with the one end of installation piece, and the one end and the seat body fixed connection of second connecting block are kept away from to the installation piece.

5. The backrest structure for a seat according to claim 4, characterized in that: the bottom of the connecting arm is hinged to the bottom of the mounting block, the hinged position of the connecting arm is a second hinged point, and the height of the first hinged point is always higher than that of the second hinged point.

6. The backrest structure for a seat according to claim 5, characterized in that: the top of the mounting block is provided with a connecting sheet which extends upwards and obliquely close to the backrest frame, and the top of the connecting sheet is hinged with one end of the second connecting sheet close to the connecting sheet.

7. The backrest structure for a seat according to claim 6, characterized in that: the lateral part that the back frame was kept away from to the installation piece has the joint groove, the joint groove is used for the fixed seat body of joint.

8. The backrest structure for a seat as claimed in claim 7, wherein: the fixed hole or the second hinge hole is provided with a plurality of holes.

9. The backrest structure for a seat according to claim 2, characterized in that: the connecting arm sets up between back frame and angle adjusting part, the connecting arm top is articulated through second hinge hole and angle adjusting part.

10. The backrest structure for a seat as claimed in claim 7, wherein: the bottom of the mounting block is provided with a plurality of second hinge holes for being hinged with the bottom of the connecting arm.