CN211984653U - Adjustable expansion mechanism for seat backrest - Google Patents

Abstract

The utility model discloses an extension mechanism with adjustable backrest technical field, including the backrest body frame, the backrest body frame is square support body structure, the headrest is installed on the upper portion of backrest body frame, the one side of backrest body frame is provided with the back net, the back pole is evenly installed in the frame chamber of backrest body frame, the utility model discloses a gliding back pole can carry out the switching of soft or hard state to the backrest in the spout, can be as soft backrest promptly, has and can regard as hard backrest, two kinds of state opposite, and the expense family has brought two kinds of experiences opposite completely. Meanwhile, due to the arrangement of the abutting head and the spring, the massage experience is increased for the user. Finally, through the communicated application of the inner cavity of the rod body and the air hole, a user can put some traditional Chinese medicine sachets conveniently, and benefits brought by the traditional Chinese medicine sachets can be enjoyed.

Description

Adjustable expansion mechanism for seat backrest

Technical Field

The utility model relates to a backrest technical field specifically is an extension mechanism with adjustable backrest.

Background

The chair is a seat with a backrest and armrests.

At present, the backrest of the seat in the market has two types, one is a soft backrest (namely, the backrest main body is formed by erecting a square frame with radian, the inner cavity of the square frame is coated with a nylon net, the nylon net has elasticity and is relatively soft, or the outer side of a backrest keel frame is coated with a soft cushion), and the other is a hard backrest (namely, the backrest is not provided with an elastic lining such as a soft cushion, and the like, and a wooden backrest and a plastic backrest are common).

Hard back and soft back are two sets of article that the function is opposite, and the function is comparatively single for the seat is suitable for the crowd and can not experience the benefit that two kinds of backs brought.

Therefore, under the competition of the market, how to improve the functionality of the backrest and meet the diversified experience of the user becomes a powerful competitive factor in the industry.

Based on this, the utility model designs an extension mechanism with adjustable backrest to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an extension mechanism with adjustable seat back to the hard back and the soft back that provide in solving above-mentioned background are two sets of opposite function's article, and the function is comparatively single, makes the seat be suitable for the crowd and can not experience the benefit that two kinds of backs were brought, under the competition in market, how improves the functionality of back, satisfies the problem of user's many first experiences.

In order to achieve the above object, the utility model provides a following technical scheme: an adjustable expansion mechanism for a seat backrest comprises a backrest main frame, wherein the backrest main frame is of a square frame body structure, a headrest is mounted at the upper part of the backrest main frame, a backrest net is arranged on one surface of the backrest main frame, and backrest rods are uniformly mounted in a frame cavity of the backrest main frame;

the back pole includes the body of rod, the both ends of the body of rod all are provided with the pole head, the body of rod of the body of rod is evenly installed and is supported the head.

Preferably, the upper wall and the lower wall of the cavity of the backrest main frame are both provided with sliding chutes, and the sliding chutes are square annular grooves.

Preferably, elastic bands are sewn on two sides of the headrest, and the other ends of the elastic bands are mounted on the side edges of the backrest main frame.

Preferably, the body of rod is the cylinder type cavity body of rod, the mouth of puting in has been seted up to the left side wall of body of rod bottom inner chamber, and the notch stopper of putting in the mouth has a cap stopper, the spring is evenly installed to the left side wall of body of rod inner chamber, the ann's socket has evenly been seted up to the right side wall of body of rod inner chamber.

Preferably, the insert of putting of the spring and the body of rod is aligned, it is half cake form block to support the head, and is provided with the lug in the middle part of the side wall of the chord side that supports the head, the lug is inserted in the right-hand member inner chamber of spring, support the head and run through the insert of putting of the body of rod, it has the gas pocket to evenly set up in the block of head, and the gas pocket runs through the left and right sides wall that supports the head.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a can be in the spout gliding back pole, can carry out the switching of soft or hard state to the back, can be as soft back promptly, have and can be as hard back, two kinds of state opposite, the expense family has brought two kinds of experiences opposite. Meanwhile, due to the arrangement of the abutting head and the spring, the massage experience is increased for the user. Finally, through the communicated application of the inner cavity of the rod body and the air hole, a user can put some traditional Chinese medicine sachets conveniently, and benefits brought by the traditional Chinese medicine sachets can be enjoyed.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

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

FIG. 2 is a second schematic structural view of the present invention;

FIG. 3 is a schematic view of the structure of the sliding chute and the backrest rod;

FIG. 4 is an enlarged view of the point A of FIG. 3 according to the present invention;

FIG. 5 is a schematic view of the structure of the backrest rod of the present invention;

FIG. 6 is an enlarged view of the point B of FIG. 5 according to the present invention;

fig. 7 is a schematic view of the structure of the utility model.

In the drawings, the components represented by the respective reference numerals are listed below:

100-main backrest frame, 101-chute, 200-headrest, 201-elastic band, 300-backrest net, 400-backrest rod, 410-rod body, 411-cap plug, 412-spring, 420-rod head, 430-head support and 431-air hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: an adjustable expansion mechanism of a seat backrest mainly comprises a backrest main frame 100, a headrest 200, a backrest net 300 and a backrest rod 400. The main backrest frame 100 is a square frame body structure and is a main frame of the backrest; the headrest 200 is tied on the upper part of the backrest through an elastic band 201, and the elastic band 201 has elasticity and can turn the headrest 200 to two sides of the backrest; the backrest net 300 is a nylon net commonly used for soft backrests in the market, and has elasticity, softness and toughness; the backrest rods 400 are cylindrical and uniformly distributed in the cavity of the backrest main frame 100 to lean against the back of the user.

The upper and lower walls of the cavity of the main backrest frame 100 are provided with sliding grooves 101, the sliding grooves 101 are of square annular groove structures, and the backrest rod 400 can slide along the groove cavity of the sliding grooves 101 to adjust the position of the backrest rod 400, so that the hardness of the backrest is changed.

The backrest rod 400 comprises a rod body 410, the rod body 410 is a cylindrical hollow rod body, and a feeding port is formed in the left side wall of an inner cavity at the bottom end of the rod body 410 and used for feeding traditional Chinese medicine sachets into the inner cavity of the rod body 410 from the feeding port. The cap 411 is plugged in the opening of the feeding port to block the feeding port, so that the smell of the traditional Chinese medicine sachet in the inner cavity of the rod body 410 escapes from the air hole 431.

Spring 412 is evenly installed on the left side wall of the inner cavity of rod body 410, an inserting hole is evenly formed in the right side wall of the inner cavity of rod body 410, inserting holes of spring 412 and rod body 410 are aligned, abutting head 430 is a semicircular cake-shaped block, a convex block is arranged in the middle of the side wall of the chord side of abutting head 430, the convex block is inserted in the inner cavity of the right end of spring 412, abutting head 430 penetrates through the inserting hole of rod body 410, air holes 431 are evenly formed in the block of abutting head 430, the air holes 431 penetrate through the left side wall and the right side wall of abutting head 430, when the back of a user is abutted to abutting head 430 conveniently, abutting head 430 is stressed to shrink towards the inner cavity of rod body 410, under the elastic action of spring 412, the acting force relied by the user is slowly released, and pushing abutting head 430 to abut against the back of the user under.

The rod head 420 is a square sliding block, the rod head 420 is located in the groove cavity of the sliding groove 101, and when the rod head 420 slides along the sliding groove 101, the orientation of the abutting head 430 cannot be changed.

The utility model discloses a concrete application does:

example one

The soft backrest can make the user feel comfortable and soft when the user leans on the backrest, and the comfortable environment is easy to make the user feel sleepy.

During the working period, the backrest rod 400 slides along the groove cavity of the sliding groove 101 to the groove cavity of the sliding groove 101 close to the leaning net 300, at the moment, the rod body 410 is close to the side wall of the leaning net 300 and is abutted against the leaning net 300, and the leaning net 300 of the abutting head 430 is pressed in the inner cavity of the rod body 410. When the user's back relied on the net 300, the net 300 that leans on receives the restriction of body of rod 410, no longer caves in backward, and body of rod 410 supports with the cloth back, and at this moment, the back is "hard back" state, and the back of bang is relied on comparatively difficultly, is difficult for making the user rely on to go back and produces the stranded meaning.

In the noon break period, the backrest rod 400 slides along the groove cavity of the sliding groove 101 to the groove cavity far away from the backrest net 300, and at the moment, more space exists between the rod body 410 and the backrest net 300. When the back of the user leans on the leaning net 300, the leaning net 300 is stressed and is recessed backwards due to the soft elasticity of the leaning net 300, so that the user leans on the leaning net to be softer, meanwhile, the leaning net 300 touches the outer wall of the abutting head 430 in the process of recessing backwards, the abutting head 430 is stressed to contract towards the inner cavity of the rod body 410, under the elastic action of the spring 412, the acting force depended by the user is slowly released, the abutting head 430 is pushed to abut against the back of the user under the elastic counter-acting force of the spring 412, and the pressing massage effect is achieved. At the moment, the backrest is in a soft backrest state, and the comfortable environment improves the rest experience of the user.

Example two

In the family population and the family life, young people mostly tend to soft backrests, but the old people have inconvenience in hands and feet, and the chair with the soft backrest is easy to get tired after the old people lean on the chair, so that the old people do not have energy; when the old people get up, the soft elasticity of the backrest can consume an acting force, the supported reaction force is lower, and the old people need to assist the reaction force of the backrest when leaving the seat, so that the old people sit on the seat with the soft backrest, and the strength spent when leaving the seat is larger than that of the seat with the hard backrest.

Consequently, in the life at home, can adjust according to the family personnel needs the utility model discloses a soft or hard state makes the utility model discloses it is wider to receive many faces, has improved the utility model discloses competitiveness in market.

EXAMPLE III

The user opens the cap 411, can put in the traditional chinese medicine sachet to the body of rod 410 inner chamber from the input mouth of body of rod 410, again with cap 411 lid back input mouth, like this, the smell of the traditional chinese medicine sachet in the body of rod 410 takes place outwards from gas pocket 431 for the user enjoys the benefit that the traditional chinese medicine sachet brought.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically coupled, may be directly coupled, or may be indirectly coupled through an intermediary. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention are understood according to specific situations. In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (5)

1. The utility model provides an extension mechanism with adjustable seat back which characterized in that: the backrest comprises a backrest main frame (100), wherein the backrest main frame (100) is of a square frame body structure, a headrest (200) is installed on the upper portion of the backrest main frame (100), a backrest net (300) is arranged on one surface of the backrest main frame (100), and backrest rods (400) are uniformly installed in a frame cavity of the backrest main frame (100);

the back support rod (400) comprises a rod body (410), rod heads (420) are arranged at two ends of the rod body (410), and the rod body of the rod body (410) is uniformly provided with abutting heads (430).

2. The adjustable seat back expansion mechanism of claim 1, wherein: the upper wall and the lower wall of a frame cavity of the backrest main frame (100) are both provided with sliding grooves (101), and the sliding grooves (101) are square annular grooves.

3. The adjustable seat back expansion mechanism of claim 1, wherein: elastic bands (201) are sewn on two sides of the headrest (200), and the other ends of the elastic bands (201) are installed on the side edge of the backrest main frame (100).

4. The adjustable seat back expansion mechanism of claim 1, wherein: the utility model discloses a novel telescopic rod, including body of rod (410), body of rod (410) is the cylinder type cavity body of rod, the mouth of puting in has been seted up to the left side wall of the body of rod (410) bottom inner chamber, and the notch of putting in the mouth is filled with cap stopper (411), spring (412) are evenly installed to the left side wall of the body of rod (410) inner chamber, the ann's socket has evenly been seted up to the right side wall of the body of rod (410.

5. The adjustable seat back expansion mechanism of claim 4, wherein: spring (412) and the subsides of the body of rod (410) are aligned, it is semicircle pie block to support head (430), and supports the chord side wall middle part of head (430) and be provided with the lug, the lug is arranged in the right-hand member inner chamber of spring (412), support head (430) and run through the subsides of the body of rod (410), it has gas pocket (431) evenly to set up in the block of head (430), and gas pocket (431) run through the left and right sides wall of supporting head (430).

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