CN217218528U - Adjustable seat - Google Patents

Abstract

An object of the utility model is to provide a can be in the use with the back of the chair along the position of fore-and-aft direction conveniently carry out continuous adjustment and after the location stabilize the adjustable seat of locking, this adjustable seat includes the back of the chair, seat support and is used for the installation the support mounting bracket of the back of the chair and seat support, be connected through an adjustable swing joint structure between support mounting bracket and the back of the chair, make the back of the chair can for the optional position of seat mounting bracket in the seat fore-and-aft direction within range of regulation carries out the locking and fixes to satisfy the demand that the user supported the back and used to the different positions of the back of the chair on the seat fore-and-aft direction.

Description

Adjustable seat

Technical Field

The utility model relates to a seat equipment field specifically is an adjustable seat.

Background

Along with the informatization and data electronization of the society, more and more people need to work in a sitting posture for a long time, so that muscles of all parts of a body are sour and swollen, further, the body parts, particularly the waist and the back, are sore and tired, and diseases such as lumbar disc herniation can be caused sometimes. Therefore, the existing chair with a backrest is widely applied to family rooms or office places as a product which can provide good support for the waist and the back of a human body and relieve the muscle tension and fatigue state.

An adjustable seat as disclosed in the chinese utility model patent document with the grant application number of CN201620497699.1, including chair leg, seat, the back of the chair and chair frame, the chair frame includes L shape support, first stay tube, second stay tube and third stay tube, the rotatable installation on the chair leg of lower extreme of L shape support, first stay tube cover is established in the upper end of L shape support, the second stay tube is transversely installed on first stay tube through first elevating system, the seat is installed on first stay tube through back-and-forth movement mechanism, the third stay tube is installed in the upper end at first stay tube, the back of the chair passes through the second elevating system and installs on the third stay tube. According to the scheme, the adjustable seat can realize the lifting and the front-back adjustment of the seat surface through the first lifting mechanism and the front-back movement, and the lifting and the adjustment of the seat back can be realized through the second lifting mechanism.

Although the adjustable seat can fix the seat back at different front and rear positions, the adjustable seat realizes the effect by adopting a mode that the adjusting knob fixed on the seat back is locked after penetrating through different adjusting holes pre-arranged on the supporting tube. Firstly, when the chair is adjusted in this way, the position of the chair back cannot be continuously adjusted in the front-rear direction according to the actual body and shape of the user and the use requirement, but is changed in a stepped manner, which may affect the actual use experience of the user. Different people need carry out the dismantlement that relapse and fix when using this seat simultaneously, and the use method is very loaded down with trivial details, is unfavorable for promoting and popularizing.

To the above problem, the utility model provides a can conveniently carry out continuous adjustment and the adjustable seat that stabilizes the locking after fixing a position with the back of the chair along the position of fore-and-aft direction in the use.

SUMMERY OF THE UTILITY MODEL

The utility model provides a can conveniently carry out continuous adjustment and the adjustable seat that stabilizes the locking that carries on after the location with the back of the chair along the position of fore-and-aft direction in the use.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides an adjustable seat, includes the back of the chair, seat support and is used for the installation the support mounting bracket of the back of the chair and seat support, be connected through an adjustable swing joint structure between support mounting bracket and the back of the chair, make the back of the chair can for the seat mounting bracket carries out the locking in the optional position of the upward control range in seat front and back side and fixes to satisfy the user and support the demand that the back used to the back of the chair in the different positions of the direction of seat front and back.

Preferably, the adjustable movable connecting structure comprises a positioning connecting seat fixedly connected with the supporting mounting frame, a movable telescopic device which can be telescopic to change the length of the movable telescopic device and can be fixedly locked at a required position, and a driven connecting piece provided with a chair back; the positioning connecting seat, the telescopic driving piece and the driven connecting piece are connected in a pairwise mutual hinging mode to form a movable triangular mechanism, and the movable triangular mechanism comprises a first driving hinging connecting part formed by hinging the positioning connecting seat and one end of a movable telescopic device, a second driving hinging connecting part formed by hinging the positioning connecting seat and one end of the driven connecting piece and a third driving hinging connecting part formed by mutually hinging two end parts, far away from the positioning connecting seat, on the movable telescopic device and the driven connecting piece respectively; when the movable telescopic device extends or shortens, the distance between the first driving hinged connecting part and the third driving hinged connecting part can be changed, so that the driven connecting part provided with the chair back is driven to rotate around the hinged center of the second driving hinged connecting part, and the position of the chair back in the front-back direction of the chair is changed.

As right the utility model discloses a preferably, include in the activity telescoping device connect in the air spring part between first articulated connecting portion and the third articulated connecting portion and to the regulation and control subassembly that the work of air spring part was controlled.

As right the utility model discloses a preferred, the rear side fixed mounting of the back of the chair has a transition piece, the back of the chair through this transition piece install in on the driven connecting piece, thereby transition piece also adopt articulated mode movable mounting in thereby form on the driven connecting piece keeps away from the tip of location connecting seat and can make transition piece and the back of the chair together carry out the first supplementary articulated connecting portion of pivoted for the tip of driven connecting piece for the back of the chair can also change the inclination of self and user's back suits the laminating when changing front and back direction upper position.

As a preference of the present invention, a transition connection member is fixedly installed at the rear side of the seat back, the seat back is installed on the driven connection member through the transition connection frame, and the transition connection member is also movably installed on the end portion of the driven connection member far away from the positioning connection seat in a hinged manner so as to form a first auxiliary hinged connection portion which enables the transition connection member and the seat back to rotate together relative to the end portion of the driven connection member; the rear side of activity telescoping device still installs and is used for making the seat adjust the activity in-process right the supplementary piece that pulls that the tilt state carries out control in step, supplementary both ends of pulling the piece respectively with the location connecting seat with transition piece connects through articulated mode and forms and is located by the supplementary articulated connecting portion of second of back of the chair one side and leans on the supplementary articulated connecting portion of third of location connecting seat one side, makes first supplementary articulated connecting portion, the supplementary articulated connecting portion of second, the supplementary articulated connecting portion of third and the articulated connecting portion of second drive interconnect in proper order and form a confined quadrilateral mechanism.

Preferably, the main body of the quadrilateral mechanism is a parallelogram, so that the chair back moves in a translational manner all the time without deflection and swing in the adjusting process.

As right the utility model discloses a preferred, the cross-sectional shape of driven connecting piece and supplementary piece of pulling all is one side open-ended U font, when connecting the installation driven connecting piece sets up with the relative mode gomphosis of each other of opening side with supplementary piece of pulling, forms and is used for placing movable telescoping device's the cavity of accomodating.

As right the utility model discloses a preferred, the back of the chair through a lift locking mechanism movable mounting in make the seat can go up and down to remove the regulation and the locking on the not co-altitude position is fixed on the support mounting bracket.

As to the utility model discloses a preferred, the seat support through a translation locking mechanism movable mounting in make the seat can carry out the back-and-forth movement regulation and the locking on different front and back positions is fixed on the supporting installation frame.

Preferably, the bottom of the supporting and mounting frame is fixedly provided with a base which plays a bearing role and prevents the seat from toppling over.

To sum up, the utility model discloses following a plurality of beneficial effect can be realized:

1. adjustable seat can conveniently carry out continuous adjustment and stabilize the locking in the position after the location with the back of the chair along the position of fore-and-aft direction in the use, satisfied the user and supported the demand that the back used to the back of the chair in the ascending different positions of seat fore-and-aft direction.

2. When the air spring valve is opened, the chair back can automatically move forwards to the limit position, and the user can adjust the position of the chair back only through the leaning action of the user.

3. When adjustable seat need lock the position of the back of the chair fixed, only need close the valve in the air spring through the regulation and control subassembly, can form a firm triangle-shaped mechanism, very reliable and stable.

4. Adjustable seat pass through first supplementary articulated connecting portion, the supplementary articulated connecting portion of second, the supplementary articulated connecting portion of third and the articulated connecting portion of second drive interconnect in proper order and form a confined quadrangle mechanism to preferably parallelogram mechanism, as long as adjust the back of the chair to the inclination state of needs in advance, so at the whole in-process of regulation and locking, thereby the back of the chair can not take place the slice and keep this inclination state, optimize its use that supports to provide in user's back and experience.

5. Adjustable seat accept the cavity through setting up one kind, can accept and protect comparatively accurate complicated cylinder device, avoid outer collision to strike the damage that probably leads to or the destruction condition takes place, can effectively improve equipment's security and the life of extension seat.

Drawings

FIG. 1 is a schematic view of the external structure of an adjustable seat;

FIG. 2 is a side view of the adjustable seat;

FIG. 3 is a schematic view of an adjustable articulating structure in an adjustable seat;

FIG. 4 is a schematic view of a triangular mechanism formed in the adjustable seat;

FIG. 5 is an enlarged partial schematic view of the adjustable seat in a locked position with the seat back moved rearward;

FIG. 6 is an enlarged partial schematic view of the adjustable seat in a forward moving and locked configuration of the seat back;

FIG. 7 is a schematic view of the internal structure of the receiving cavity surrounded by the driven connecting member and the auxiliary traction member in the adjustable seat;

fig. 8 is a schematic diagram of a modified structure of the adjustable articulated structure of the adjustable seat in which the movable extension device and the driven link extend from top to bottom.

In the figure:

1-chair back, 1 a-transition connecting piece;

2-seat;

3-supporting the mounting frame;

4-adjustable movable connecting structure, 4 a-positioning connecting seat, 4 b-movable telescopic device, 4 c-driven connecting piece;

5-triangular mechanism, 5 a-first drive hinge connection, 5 b-second drive hinge connection, 5 c-third drive hinge connection;

6-regulatory components;

7-quadrilateral mechanism, 7 a-first auxiliary hinge connection, 7 b-second auxiliary hinge connection, 7 c-third auxiliary hinge connection, 71-auxiliary traction element;

8-containing cavity;

9-lifting locking mechanism;

10-translational locking mechanism;

11-base, 11 a-roller.

Detailed Description

The following specific embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent laws and protection within the scope of the present invention.

The scheme is realized by the following technical means:

example 1: the adjustable chair of the present embodiment is similar to a conventional chair in structure, and comprises a chair back 1 against which the back of the user abuts, a chair seat 2 for supporting the weight of the user's body, and a support mounting frame 3 for connecting the chair back 1 and the chair seat 2 and supporting them on the bottom surface. The difference is characterized in that when the chair back 1 is mounted on the supporting mounting frame 3, an adjustable movable connecting structure 4 which can lock and fix the chair back 1 at any position in the adjusting range of the chair mounting frame in the front-back direction of the chair is arranged between the chair back 1 and the supporting mounting frame, so that the requirements of a user for supporting the back at different positions of the chair back 1 in the front-back direction of the chair are met.

The adjustable movable connection structure 4 includes a positioning connection seat 4a, wherein a hollow annular hole-shaped connection portion is formed at one side of the positioning connection seat 4a and is sleeved and fixedly mounted on the supporting mounting frame 3 to form a vertical cylindrical partial section, so that the other side of the positioning connection seat 4a protrudes forward in the horizontal direction relative to the supporting mounting frame 3. A concave hollow mounting groove opening part is arranged on the part of the positioning connecting seat 4a protruding forwards. One end of a rod-shaped movable expansion device 4b which can expand and contract under the control of an external regulation and control component 6 is arranged in the mounting groove opening part, a bolt simultaneously penetrates through the end part of the movable expansion piece and a part protruding in the positioning and connecting mounting groove opening part to form a first driving hinged connecting part 5a between the end part of the movable expansion piece and the protruding part, and the movable expansion piece can rotate relative to the positioning and connecting seat 4a around a hinged center of the movable expansion piece. Similarly, a rod-shaped driven connecting piece 4c is also installed inside and outside the opening of the installation groove, and a bolt is also used for simultaneously penetrating through the positioning connecting seat 4a and the lower end part of the driven connecting piece 4c to form a second driving hinge connecting part 5b between the two parts, so that the driven connecting piece 4c can rotate relative to the positioning connecting seat 4a around the hinge center at the position. The driven link 4c and the upper end of the movable telescopic device 4b are connected by the same hinge means to form a third driving hinge connection 5 c. At this time, the positioning and connecting bases 4a, the driven connecting member 4c and the movable expansion and contraction device 4b are connected to each other as sides to form a triangular mechanism 5. The upper end part of the outer side of the driven connecting piece 4c is directly and fixedly connected with the chair back 1, so that the two parts can move together.

The telescopic connection device is a self-locking gas spring which can realize that the cylinder and the support rod are stopped and locked at any relative position, the outer side end of the support rod in the gas spring is hinged with the driven connecting piece 4c, and the outer side end of the cylinder in the gas spring is hinged with the positioning connecting seat 4 a. The working state of the gas spring is controlled by the regulating and controlling component 6 connected to the outside, and when the regulating and controlling component 6 opens the internal valve of the gas spring, the gas spring is in a movable state and has a tendency of extension, namely, the telescopic connecting device can be gradually extended under the action of the internal gas. Considering from the triangular mechanism 5, when the length of the telescopic connecting device as one side is increased, under the condition that the lengths of the other two sides are unchanged and the positioning connecting seat 4a as one side is completely fixed, the driven connecting piece 4c as the other side is driven to rotate forwards until the telescopic connecting device is completely extended or is abutted against the telescopic connecting device and can not extend any more, and at the moment, the driven connecting piece 4c rotates to the maximum angle position, namely, the chair back 1 installed at the upper end part of the driven connecting piece 4c is positioned at the most front limit position in the horizontal direction under the state. In this state, the user sits on the adjustable seat, leans backward and applies pressure to the gas spring as a telescopic link through the seat back 1 to contract it, and at the same time, the seat back 1 moves backward. According to the actual requirement of a user, when the chair back 1 is moved to a proper position, the user can operate the regulating and controlling assembly 6 to close the valve inside the air spring, and at the moment, the relative position of the air cylinder and the supporting rod in the air spring is not changed any more, so that the telescopic connecting device becomes a connecting rod similar to rigidity. At this time, since the three sides of the triangular mechanism 5 are all locked completely, a very firm and stable state is formed, namely, the chair back 1 is locked and fixed without moving, and reliable supporting force can be provided for the back of the user at the position. When the position of the chair back 1 needs to be readjusted, the process is repeated, and the chair is very simple and convenient; the structure is always stable as long as the regulating and controlling assembly 6 is not triggered to change the length of the gas spring.

Example 2: in the above embodiment 1, since the seat back 1 fixedly connected to the driven link 4c rotates along with it, the end surface of the seat back 1 on the front side also tilts and changes, and the front end surface cannot be maintained in an ideal angular state, which affects the seating and reclining feeling of the user. In view of the above problems, the present embodiment is further optimized and improved on the basis of embodiment 1, and provides a more benign use experience for the user.

In this embodiment, a transition piece 1a and an auxiliary traction piece 71 are additionally provided. Transition connecting piece 1a wherein install in the rear side of back of the chair 1 and be connected through articulated mode and the upper end of driven connecting piece 4c and form first supplementary articulated connecting portion 7a, and the supplementary pull 71 that increases is located the rear side of driven connecting piece 4c, its upper and lower both ends respectively with location connecting seat 4a with transition connecting piece 1a connects through articulated mode and forms to be located by the supplementary articulated connecting portion 7b of second of back of the chair 1 one side and by the supplementary articulated connecting portion 7c of third of location connecting seat 4a one side, makes first supplementary articulated connecting portion 7a, the supplementary articulated connecting portion 7b of second, the supplementary articulated connecting portion 7c of third and second drive articulated connecting portion 5b interconnect in proper order and form a confined quadrangle mechanism 7. The chair back 1 is fixedly connected to the transition connecting piece 1a as one side of the quadrilateral mechanism 7, and the movement process of the chair back is associated with the positioning connecting seat 4a of which the opposite side is fixed, rather than completely following the rotation of the driven connecting piece 4c around the second driving hinge connecting part 5 b. It is further preferable that the quadrilateral mechanism 7 is designed to have a parallel structure with the same length of the upper and lower opposite sides, so that the quadrilateral mechanism 7 is specialized as the parallelogram mechanism 7. In this state, as long as the chair back 1 is adjusted to the required inclination angle state in advance, the chair back 1 can not be flaky in the whole process of adjustment and locking so as to maintain the inclination angle state, and the use experience provided by the support and the back of the user is optimized.

Furthermore, the driven connecting piece 4c and the auxiliary traction piece 71 are both in a U-shape with an opening on one side, and when the driven connecting piece 4c and the auxiliary traction piece 71 are connected and installed, the driven connecting piece 4c and the auxiliary traction piece 71 are mutually embedded in a mode that the opening sides are opposite to each other, so that an accommodating cavity 8 for accommodating the movable telescopic device 4b is formed. Through setting up this accommodating cavity 8, can accommodate and protect comparatively accurate complicated cylinder device, avoid outer collision to strike the damage or the destruction condition that probably leads to and take place, can effectively promote the security of equipment and prolong the life of seat.

Preferably, the chair back 1 is movably mounted on the supporting and mounting frame 3 through a lifting and locking mechanism 9, so that the chair can be adjusted in a lifting and moving manner and locked and fixed at different height positions; the seat 2 is movably mounted on the supporting and mounting frame 3 through a translational locking mechanism 10, so that the seat can be adjusted in a back-and-forth movement manner and locked and fixed at different front and rear positions, and the use flexibility of the adjustable seat is further improved.

In order to improve the stability of the adjustable seat in use, a base 11 which has a bearing function and prevents the seat from falling down can be fixedly arranged at the bottom of the supporting installation frame 3. In order to facilitate the movement, a plurality of pairs of rollers 11a may be installed at a lower portion of the base 11 to reduce a frictional force between the base 11 and the bottom surface when the base is pushed.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (9)

1. The utility model provides an adjustable seat, contains back of the chair (1), seat support (2) and is used for the installation support mounting bracket (3) of back of the chair (1) and seat support (2), its characterized in that: the supporting mounting frame (3) is connected with the chair back (1) through an adjustable movable connecting structure (4), so that the chair back (1) can be locked and fixed at any position in an adjusting range in the front-rear direction of the chair relative to the supporting mounting frame (3), and the requirements of a user for supporting the back at different positions of the chair back (1) in the front-rear direction of the chair are met; the adjustable movable connecting structure (4) comprises a positioning connecting seat (4 a) fixedly connected with the supporting mounting frame (3), a movable telescopic device (4 b) capable of telescoping to change the length of the movable telescopic device and fixedly locking the position of the movable telescopic device, and a driven connecting piece (4 c) provided with the chair back (1); the positioning connecting seat (4 a), the telescopic driving piece and the driven connecting piece (4 c) are connected in a pairwise mutual hinged mode to form a movable triangular mechanism (5), the movable triangular mechanism (5) comprises a first driving hinged connecting part (5 a) formed by hinging the positioning connecting seat (4 a) and one end of a movable telescopic device (4 b), a second driving hinged connecting part (5 b) formed by hinging the positioning connecting seat (4 a) and one end of the driven connecting piece (4 c) and a third driving hinged connecting part (5 c) formed by mutually hinging two end parts, far away from the positioning connecting seat (4 a), of the movable telescopic device (4 b) and the driven connecting piece (4 c); when the movable telescopic device (4 b) is extended or shortened, the distance between the first driving hinged connecting part (5 a) and the third driving hinged connecting part (5 c) is changed, so that the driven connecting piece (4 c) provided with the chair back (1) is driven to rotate around the hinged center of the second driving hinged connecting part (5 b), and the position of the chair back (1) in the front-rear direction of the chair is changed.

2. The adjustable seat according to claim 1, wherein: the movable telescopic device (4 b) comprises a gas spring component connected between the first hinge connecting part and the third hinge connecting part and a regulating and controlling assembly (6) for controlling the work of the gas spring component.

3. The adjustable seat of claim 1, wherein: the rear side fixed mounting of back of the chair (1) has a transition piece (1 a), back of the chair (1) through this transition piece (1 a) install in on driven connecting piece (4 c), thereby transition piece (1 a) also adopt articulated mode movable mounting in thereby form on the tip that location connecting seat (4 a) were kept away from in driven connecting piece (4 c) and to make transition piece (1 a) and back of the chair (1) together carry out pivoted first supplementary articulated connecting portion (7 a) for back of the chair (1) can also change the inclination of self and user's back and suit laminating when changing front and back direction upper position.

4. The adjustable seat according to claim 1, wherein: a transition connecting piece (1 a) is fixedly installed on the rear side of the chair back (1), the chair back (1) is installed on the driven connecting piece (4 c) through the transition connecting frame, and the transition connecting piece (1 a) is movably installed on the end portion, far away from the positioning connecting seat (4 a), of the driven connecting piece (4 c) in a hinged mode, so that a first auxiliary hinged connecting portion (7 a) capable of enabling the transition connecting piece (1 a) and the chair back (1) to rotate together relative to the end portion of the driven connecting piece (4 c) is formed; the rear side of activity telescoping device (4 b) still install and be used for making the seat adjust the activity in-process right transition connecting piece (1 a) tilt state carries out the supplementary piece (71) that pulls that controls in step, supplementary pull the both ends of piece (71) respectively with location connecting seat (4 a) with transition connecting piece (1 a) are connected through articulated mode and are formed and be located by the supplementary articulated connecting portion of second (7 b) of back of the chair (1) one side and lean on the supplementary articulated connecting portion of third (7 c) of location connecting seat (4 a) one side, make first supplementary articulated connecting portion of assisting (7 a), the supplementary articulated connecting portion of second (7 b), the supplementary articulated connecting portion of third (7 c) and the articulated connecting portion of second drive (5 b) interconnect in proper order and form a confined quadrangle mechanism (7).

5. The adjustable seat according to claim 4, wherein: the main body of the quadrilateral mechanism (7) is in a parallelogram shape, so that the chair back (1) always moves in a translation mode without deflection and swing in the adjusting process of the chair.

6. The adjustable seat according to claim 4, wherein: the driven connecting piece (4 c) and the auxiliary traction piece (71) are both in a U shape with an opening at one side, and the driven connecting piece (4 c) and the auxiliary traction piece (71) are mutually embedded and arranged in a mode that the opening sides are opposite to each other when the driven connecting piece and the auxiliary traction piece are connected and installed, so that an accommodating cavity (8) for placing the movable telescopic device (4 b) is formed.

7. The adjustable seat according to claim 1, wherein: the chair back (1) is movably arranged on the supporting installation frame (3) through a lifting locking mechanism (9) so that the chair can be adjusted in a lifting movement mode and locked and fixed at different height positions.

8. The adjustable seat according to claim 1, wherein: the seat (2) is movably arranged on the supporting installation frame (3) through a translation locking mechanism (10) so that the seat can be adjusted in a forward and backward movement mode and can be locked and fixed at different forward and backward positions.

9. The adjustable seat according to claim 1, wherein: the bottom of the supporting installation frame (3) is fixedly provided with a base (11) which has a bearing effect and prevents the seat from toppling.

Images