CN218044400U - Seat - Google Patents

Abstract

The utility model relates to a seat, which comprises a base, wherein a four-connecting-rod assembly is arranged on the base, the four-connecting-rod assembly comprises two connecting rods which are used for bearing a seat and are arranged in parallel, the upper ends of the two connecting rods are connected with a first connecting seat which is used for connecting a chair back, and the lower ends of the two connecting rods are connected with a second connecting seat which is connected on the base in a sliding way; the base is also provided with a driving component for driving the four-bar connecting rod component to act so as to synchronously adjust the heights of the seat and the chair back; the connecting rod is provided with a horizontal displacement mechanism so that the chair seat can horizontally move in the front-back direction to adjust the sitting depth; the chair back can rotate around the connecting point of the first connecting seat relatively to adjust the inclination angle of the chair back. The four-link assembly can be driven by the driving assembly to synchronously adjust the seat and the chair back, so that the adjustment convenience is improved, and meanwhile, the seat and the chair back can also be adjusted, so that the requirements of different crowds are met.

Description

Seat

Technical Field

The utility model belongs to the technical field of furniture, especially, relate to a seat.

Background

The seat provides great convenience for life and work of people, and along with the continuous development and progress of the technology, the seat and the back of the chair in the seat have adjustable functions and can be adjusted to proper positions according to the use habits of different people. The document with the patent number CN201621064924.9 discloses a chair back adjusting mechanism, wherein an adjusting slideway is arranged on a chair seat support, the adjusting slideway is obliquely arranged from a position close to the center of the chair seat to a position close to the edge of the chair seat from bottom to top, and a strip-shaped hole is further formed in the adjusting slideway; the sliding block for adjusting the position of the chair back comprises two sliding plates which are oppositely arranged, two sliding strips arranged in the strip-shaped holes are connected between the two sliding plates, when the position of the chair back needs to be adjusted, the chair back can be far away from the front side of the chair seat to enlarge the sitting surface of the chair seat when the chair back is adjusted due to the inclined arrangement of the adjusting slide way, and meanwhile, the position of the reliable part of the chair back is raised, so that the chair back is suitable for personnel with larger stature; if the down-regulation is carried out, the device is suitable for persons with smaller statures.

Although the chair can meet the requirements of some people, the chair back and the chair seat can only present a fixed adjusting range in the adjusting process, namely, the angle formed by the chair back and the chair seat is always kept unchanged during the adjustment of the chair back; and when the seat back is adjusted backward or forward, the seat back height is necessarily adjusted, so that the seat back can not be adjusted independently in the seat depth or the seat back angle, and different requirements of more people can not be met.

Disclosure of Invention

In order to solve the technical problem, the utility model aims at providing a seat, can realize the synchro-control of seat support and the back of the chair through drive assembly to four link assembly's drive, made things convenient for user's operation, simultaneously seat support and the back of the chair can adjust alone again, also more is applicable to different crowds ' demand.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a piece of seating furniture comprises a base, wherein a four-connecting-rod assembly is arranged on the base, the four-connecting-rod assembly comprises two connecting rods which are used for supporting a chair seat and are arranged in parallel, the upper ends of the two connecting rods are connected with a first connecting seat which is used for connecting a chair back, and the lower ends of the two connecting rods are connected with a second connecting seat which is connected to the base in a sliding manner; the base is also provided with a driving component for driving the four-connecting-rod component to act so as to synchronously adjust the heights of the seat and the backrest; the connecting rod is provided with a horizontal displacement mechanism so that the chair seat can horizontally move in the front-back direction to adjust the sitting depth; the chair back can rotate around the connecting point of the first connecting seat relatively to adjust the inclination angle of the chair back.

The chair seat and the chair back are respectively connected to the connecting rod and the first connecting seat in the four-connecting-rod assembly, so that the driving of the driving assembly on the four-connecting-rod assembly can enable the heights of the chair seat and the chair back to be synchronously adjusted; but due to different sitting habits of each person, such as the size of the sitting depth and the inclination degree when leaning; the sitting depth of the chair seat can be adjusted through the horizontal displacement mechanism, and meanwhile, the chair back can also be adjusted in a rotating mode, so that different requirements of more people can be met.

Preferably, the horizontal displacement mechanism comprises a supporting seat which is rotatably connected to the two connecting rods, a U-shaped extending seat extends out of the front side of the supporting seat, and a U-shaped sliding seat which is matched with the extending seat and is used for connecting the seat is slidably connected to the extending seat; the side wall of the extension seat is provided with a plurality of limiting holes along the length direction, at least two limiting rods extending out of the side wall penetrate through the side wall of the extension seat, and the side wall of the sliding seat is provided with a first sliding groove and a second sliding groove which respectively avoid the end parts of the two limiting rods along the length direction; the side wall of the sliding seat is also connected with a locking assembly for adjusting and positioning the seat.

When needs adjust the seat depth, relieve the locking of locking subassembly for the sliding seat slides along extending the seat, also drives the seat support and removes, and gliding in-process two gag lever posts also remove in first spout and second spout, can prevent breaking away from of sliding seat and extension seat on the one hand, and on the other hand can lead to the removal of sliding seat, after removing suitable position, the position of rethread locking subassembly to the sliding seat is fixed.

Preferably, the locking assembly comprises a C-shaped fixing part fixedly connected to the side wall of the sliding seat at a position corresponding to the second chute, a shifting lever penetrates through the fixing part, a limiting block is connected to the part, located in the fixing part, of the shifting lever, a first spring is further sleeved on the shifting lever, one end of the first spring abuts against the limiting block, and the other end of the first spring abuts against the inner wall of the fixing part; in a positioning state, the first spring abuts against the limiting block to enable the end part of the deflector rod to extend into the limiting hole; in the adjusting state, the deflector rod is pulled outwards so that the end part of the deflector rod is separated from the limiting hole.

When the seat is in a normal use state, the locking assembly is in a locking state for the sliding seat, and one end of the deflector rod is always arranged in the limiting hole under the elastic force action of the first spring, so that the sliding seat is prevented from sliding when a person sits on the seat; when the adjusting is needed, the shifting rod is pulled outwards to enable the end portion of the shifting rod to be separated from the limiting hole, so that the sliding seat can move back and forth along the extension seat after being unlocked to adjust the seat depth, the shifting rod is loosened after being adjusted to a proper position, the end portion of the shifting rod can extend into another limiting hole to lock the sliding seat under the action of elastic force, and the operation is simple and convenient.

Preferably, the first connecting seat is rotatably connected with a hinged seat for supporting a chair back, the left side and the right side of the hinged seat are respectively provided with an arc-shaped groove and a plurality of positioning holes which are arranged in an arc shape, the hinged seat is provided with an adjusting rod at the position corresponding to the arc-shaped groove and the positioning holes, the adjusting rod is also arranged in the first connecting seat in a penetrating manner, the adjusting rod in the first connecting seat is connected with a stop block, the adjusting rod is sleeved with a second spring, one end of the second spring abuts against the stop block, and the other end of the second spring abuts against the inner wall of the first connecting seat; in a positioning state, the second spring abuts against the stop block so that one end of the adjusting rod extends into the positioning hole; in the adjusting state, the adjusting rod is pulled outwards so that one end of the adjusting rod is separated from the positioning hole.

When the chair back is adjusted in an inclined angle, the adjusting rod is pulled to enable the end part of the adjusting rod to be separated from the positioning hole, when the chair back is adjusted to a proper inclined angle, the adjusting rod is loosened, under the action of the elastic force of the second spring, the end part of the adjusting rod can stretch into another positioning hole again to limit the rotation of the chair back, and under the normal use state, the end part of the adjusting rod can be always positioned in the positioning hole under the abutting pressure of the spring to limit the rotation of the adjusting rod, so that the rotation of the adjusting rod is prevented when the chair back is leaned.

Preferably, the driving assembly comprises a supporting frame which is rotatably connected to one end of the base, the upper end of the supporting frame is rotatably connected with a gas spring, and the end part of a piston rod of the gas spring is rotatably connected to the position of a hinge joint of the hinge seat and the first connecting seat; still wear to be equipped with on the connecting rod and be used for the butt air spring in order to avoid air spring lower extreme and connecting rod to bump the butt pole of touching.

The support frame can support the four-connecting-rod assembly, namely the whole seat, when the height of the seat needs to be increased, the air spring extends to drive the four-connecting-rod assembly to act, and the second connecting seat is connected to the base in a sliding mode and can move towards the middle of the base in the adjusting process, so that the center of gravity of the whole seat is shifted towards the middle of the base in the increasing process, and the whole structure is more stable; the arrangement of the supporting frame also enables the seat to be adjusted to the lowest position, and the connecting rod can be in a relatively horizontal state, so that the overall size is further reduced, and the space is saved.

Preferably, a through groove is formed in the left side wall and the right side wall of the base, connecting parts extend downwards from two sides of the second connecting seat, a rotating shaft is rotatably connected to the connecting parts, and the rotating shaft is arranged in the through groove and can move in the front-back direction of the seat.

The rotating shaft can move along with the movement of the second connecting seat in the through groove and can rotate at the same time so as to cater to the action of the four-connecting-rod assembly.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the four-connecting-rod assembly can synchronously adjust the seat and the chair back under the driving of the driving assembly, so that the adjustment convenience is improved, and meanwhile, the seat and the chair back can also be adjusted, so that the requirements of different people are met;

2. wherein the setting of support frame among the drive assembly can support overall structure on the one hand, and on the other hand also makes four-bar linkage assembly can rotate to the horizontality to make overall structure volume when drawing in littleer.

Drawings

FIG. 1 is a schematic view of the overall structure of the seat of the present invention;

FIG. 2 is a front view of the seat of the present invention;

FIG. 3 is a schematic view of the seat of the present invention adjusted to the highest position;

FIG. 4 is a schematic structural view of the seat of the present invention during normal use;

FIG. 5 is a schematic structural view of a horizontal displacement mechanism in the seat of the present invention;

FIG. 6 is an enlarged view of the structure at A in FIG. 5;

fig. 7 is a schematic view of the connection and cooperation between the middle chair back and the first connecting seat.

Description of the drawings: 1. a base; 101. a through groove; 2. a four-bar linkage assembly; 201. a connecting rod; 202. a first connecting seat; 203. a second connecting seat; 204. a connecting portion; 205. a rotating shaft; 3. a support frame; 4. a chair back; 5. a gas spring; 6. abutting against the connecting rod; 7. a chair seat; 8. a supporting seat; 801. an extension base; 802. a limiting hole; 803. a limiting rod; 9. a sliding seat; 901. a first chute; 902. a second chute; 10. a locking assembly; 1001. a fixed part; 1002. a deflector rod; 1003. a limiting block; 1004. a first spring; 11. a hinged seat; 1101. an arc-shaped slot; 1102. positioning holes; 1103. adjusting a rod; 1104. a stopper; 1105. a second spring.

Detailed Description

The following describes in detail an embodiment of the present invention with reference to the drawings.

In the embodiment, as shown in fig. 1 to 7, the seat specifically includes a base 1, a four-bar linkage assembly 2 is disposed on the base 1, the four-bar linkage assembly 2 includes two parallel connecting rods 201 for supporting a seat 7, upper ends of the two connecting rods 201 are connected to a first connecting seat 202 for connecting a seat back 4, and lower ends of the two connecting rods 201 are connected to a second connecting seat 203 slidably connected to the base 1; the base 1 is also provided with a driving component for driving the four-bar linkage assembly 2 to act so as to synchronously adjust the heights of the seat 7 and the backrest 4; the connecting rod 201 is provided with a horizontal displacement mechanism so that the chair seat 7 can horizontally move in the front-back direction to adjust the sitting depth; the backrest 4 is rotatable about the connection point with the first connection seat 202 to adjust the tilt angle thereof.

When using, the user moves through drive assembly drive four link assembly 2 according to self custom to make seat support 7 and back of the chair 4 can the synchro control, improved the convenience of adjusting, after adjusting suitable height, the user still can carry out the removal regulation of front and back with seat support 7 according to the position of sitting custom at ordinary times and sit deeply, also can rotate back of the chair 7 and adjust to suitable angle, so that comfortable when relying on.

The seat 7 and the backrest 4 are respectively connected to the connecting rod 201 and the first connecting seat 202 in the four-link assembly 2, so that the driving of the four-link assembly 2 by the driving assembly can synchronously adjust the heights of the seat 7 and the backrest 4, and under normal conditions, for people with higher heights, the height of the seat 7 needs to be adjusted to a corresponding height, and for people with lower heights, the seat 7 needs to be adjusted to a lower height, so that the proper positions can be adjusted according to the crowds with different heights; but due to different sitting habits of each person, such as the size of the sitting depth and the inclination degree when leaning; the sitting depth of the chair seat 7 can be adjusted through the horizontal displacement mechanism, and meanwhile, the chair back 4 can also be adjusted in a rotating mode so as to adapt to different requirements of more people.

The horizontal displacement mechanism comprises a supporting seat 8 which is rotatably connected to two connecting rods 201, a U-shaped extending seat 801 extends from the front side of the supporting seat 8, and a U-shaped sliding seat 9 which is matched with the extending seat 801 and is used for connecting a seat 7 is slidably connected onto the extending seat 801; the side wall of the extending seat 801 is provided with a plurality of limiting holes 802 along the length direction, the side wall of the extending seat 801 is at least provided with two limiting rods 803 extending out of the side wall in a penetrating manner, and the side wall of the sliding seat 9 is provided with a first sliding chute 901 and a second sliding chute 902 which respectively avoid the end parts of the two limiting rods 803 along the length direction; and a locking assembly 10 for adjusting and positioning the chair seat 7 is also connected to the side wall of the sliding seat 9.

When the sitting depth needs to be adjusted, the locking of the locking assembly 10 is released, so that the sliding seat 9 slides along the extending seat 801, that is, the seat 7 is driven to move, and the two limiting rods 803 also move in the first sliding groove 901 and the second sliding groove 902 in the sliding process, so that on one hand, the sliding seat 9 and the extending seat 801 can be prevented from being separated, on the other hand, the movement of the sliding seat 9 can be guided, and after the sliding seat 9 is moved to a proper position, the position of the sliding seat 9 is fixed through the locking assembly 10.

The locking assembly 10 includes a C-shaped fixing portion 1001 fixedly connected to a side wall of the sliding seat 9 at a position corresponding to the second sliding slot 902, a shift lever 1002 penetrates through the fixing portion 1001, a limit block 1003 is connected to a portion of the shift lever 1002 located in the fixing portion 1001, a first spring 1004 is further sleeved on the shift lever 1002, one end of the first spring 1004 abuts against the limit block 1003, and the other end of the first spring 1004 abuts against an inner wall of the fixing portion 1001; in a positioning state, the first spring 1004 presses against the limiting block 1003 so that the end of the shifting rod 1002 extends into the limiting hole 802; in the adjusted state, the pulling rod 1002 is pulled outwards so that the end of the pulling rod 1002 is separated from the limiting hole 802.

When the seat is in a normal use state, the locking assembly 10 is in a locking state for the sliding seat 9, and at the moment, one end of the shifting rod 1002 is always placed in the limiting hole 802 under the action of the elastic force of the first spring 1004, so that the sliding seat 9 is prevented from sliding when a person sits on the seat; when the adjustment is needed, the shifting rod 1002 is pulled outwards to enable the end of the shifting rod 1002 to be separated from the limiting hole 802, so that the sliding seat 9 can move back and forth along the extension seat 801 to adjust the seat depth after being unlocked, the shifting rod 1002 is loosened after being adjusted to a proper position, the end of the shifting rod 1002 can extend into the other limiting hole 802 to lock the sliding seat 9 under the action of elastic force, and the operation is simple and convenient.

The rotation adjustment of the chair back 4 is realized by the following modes: the first connecting seat 202 is rotatably connected with a hinged seat 11 for supporting the chair back 4, the left side and the right side of the hinged seat 11 are respectively provided with an arc-shaped groove 1101 and a plurality of positioning holes 1102 which are arranged in an arc shape, the hinged seat 11 is provided with an adjusting rod 1103 at the position corresponding to the arc-shaped groove 1101 and the positioning holes 1102, the adjusting rod 1103 is also arranged in the first connecting seat 202 in a penetrating manner, the adjusting rod 1103 positioned in the first connecting seat 202 is connected with a stop 1104, the adjusting rod 1103 is sleeved with a second spring 1105, one end of the second spring 1105 is abutted against the stop 1104, and the other end of the second spring 1105 is abutted against the inner wall of the first connecting seat 202; in the positioning state, the second spring 1105 presses the stopper 1104 so that one end of the adjustment lever 1103 extends into the positioning hole 1102; in the adjustment state, the adjustment lever 1103 is pulled outward so that one end of the adjustment lever 1103 is disengaged from the positioning hole 1102.

When the inclination angle of the chair back 4 is adjusted, the adjusting rod 1103 is pulled to separate the end portion from the positioning hole 1102, when the chair back 4 is adjusted to a proper inclination angle, the adjusting rod 1103 is loosened, the end portion of the adjusting rod 1103 can extend into another positioning hole 1102 again to limit the rotation of the chair back 4 under the action of the elastic force of the second spring 1105, and in a normal use state, the end portion of the adjusting rod 1103 can be always positioned in the positioning hole 1102 under the abutting pressure of the spring to limit the rotation, so that the rotation is prevented when the chair back 4 leans against.

The driving assembly for providing power for the whole device comprises a supporting frame 3 which is rotatably connected to one end of a base 1, the upper end of the supporting frame 3 is rotatably connected with an air spring 5, and the end part of a piston rod of the air spring 5 is rotatably connected to the position of a hinge joint of a hinge seat 11 and a first connecting seat 202; an abutting rod 6 for abutting against the gas spring 5 to prevent the lower end of the gas spring 5 from touching the connecting rod 201 is further arranged on the connecting rod 201 in a penetrating manner.

The support frame 3 can support the four-link assembly 2, namely the whole seat, when the height of the seat 7 needs to be increased, the air spring extends to drive the four-link assembly 2 to act, and the second connecting seat 203 is connected to the base 1 in a sliding manner and can move towards the middle of the base 1 in the adjustment process, so that the center of gravity of the whole seat is shifted towards the middle of the base 1 in the increase process, and the whole structure is more stable; the arrangement of the supporting frame 3 also enables the seat to be adjusted to the lowest position, and the connecting rod 201 can be in a relatively horizontal state, so that the whole volume is further reduced, and the space is saved.

In order to facilitate the connection of the second connection seat 203 and enable relative sliding to occur, the through groove 101 is formed in the left side wall and the right side wall of the base 1, the connection portions 204 are extended downwards from the two sides of the second connection seat 203, the connection portions 204 are rotatably connected with the rotating shaft 205, and the rotating shaft 205 is arranged in the through groove 101 and can move in the front-back direction of the seat. The rotation shaft 205 not only moves along with the movement of the second connecting seat 203 in the through slot 101, but also rotates to cater for the movement of the four-bar linkage assembly 2.

The above description in this specification is merely illustrative of the present invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims (6)

1. The seat is characterized by comprising a base (1), wherein a four-bar linkage assembly (2) is arranged on the base (1), the four-bar linkage assembly (2) comprises two parallel connecting rods (201) for supporting a seat (7), the upper ends of the two connecting rods (201) are connected with a first connecting seat (202) for connecting a chair back (4), and the lower ends of the two connecting rods (201) are connected with a second connecting seat (203) which is connected to the base (1) in a sliding manner; the base (1) is also provided with a driving assembly for driving the four-link assembly (2) to act so as to synchronously adjust the heights of the seat (7) and the backrest (4); a horizontal displacement mechanism is arranged on the connecting rod (201) so that the chair seat (7) can horizontally move in the front-back direction to adjust the sitting depth; the chair back (4) can rotate around the connection point of the first connection seat (202) relatively to adjust the inclination angle of the chair back.

2. The seat according to claim 1, characterized in that the horizontal displacement mechanism comprises a support base (8) rotatably connected to the two connecting rods (201), an extension base (801) with a U-shape extends from the front side of the support base (8), and a sliding base (9) which is matched with the extension base (801) with a U-shape and is used for connecting the seat (7) is slidably connected to the extension base (801); a plurality of limiting holes (802) are formed in the side wall of the extending seat (801) along the length direction of the side wall, at least two limiting rods (803) extending out of the side wall penetrate through the side wall of the extending seat (801), and a first sliding groove (901) and a second sliding groove (902) which respectively avoid the end parts of the two limiting rods (803) are formed in the side wall of the sliding seat (9) along the length direction of the sliding seat; the side wall of the sliding seat (9) is also connected with a locking assembly (10) for positioning the seat (7) after adjustment.

3. The seat according to claim 2, wherein the locking assembly (10) comprises a C-shaped fixing portion (1001) fixedly connected to the side wall of the sliding seat (9) at a position corresponding to the second sliding slot (902), a pulling rod (1002) penetrates through the fixing portion (1001), a limiting block (1003) is connected to a portion of the pulling rod (1002) located in the fixing portion (1001), a first spring (1004) is further sleeved on the pulling rod (1002), one end of the first spring (1004) abuts against the limiting block (1003), and the other end of the first spring (1004) abuts against the inner wall of the fixing portion (1001); in a positioning state, the first spring (1004) presses the limiting block (1003) to enable the end part of the shifting rod (1002) to extend into the limiting hole (802); in the adjusting state, the shifting rod (1002) is pulled outwards so that the end part of the shifting rod (1002) is separated from the limiting hole (802).

4. The seat according to claim 1, characterized in that the first connecting seat (202) is rotatably connected with a hinged seat (11) for supporting the seat back (4), the left and right sides of the hinged seat (11) are respectively provided with an arc-shaped groove (1101) and a plurality of positioning holes (1102) arranged in an arc shape, the hinged seat (11) is provided with an adjusting rod (1103) at the corresponding position of the arc-shaped groove (1101) and the positioning holes (1102), the adjusting rod (1103) is also arranged in the first connecting seat (202) in a penetrating manner, the adjusting rod (1103) in the first connecting seat (202) is connected with a stopper (1104), the adjusting rod (1103) is sleeved with a second spring (1105), one end of the second spring (1105) is abutted against the stopper (1104), and the other end of the second spring (1105) is abutted against the inner wall of the first connecting seat (202); in a positioning state, the second spring (1105) presses the stop block (1104) to enable one end of the adjusting rod (1103) to extend into the positioning hole (1102); in the adjusting state, the adjusting rod (1103) is pulled outwards so that one end of the adjusting rod (1103) is separated from the positioning hole (1102).

5. The seat according to claim 1, characterized in that the driving assembly comprises a supporting frame (3) rotatably connected to one end of the base (1), a gas spring (5) is rotatably connected to the upper end of the supporting frame (3), and the end of the piston rod of the gas spring (5) is rotatably connected to the hinge point of the hinge seat (11) and the first connecting seat (202); and the connecting rod (201) is also provided with an abutting rod (6) which is used for abutting against the gas spring (5) so as to avoid the contact of the lower end of the gas spring (5) and the connecting rod (201).

6. The seat of claim 1, wherein the left and right side walls of the base (1) are provided with a through slot (101), the two sides of the second connecting seat (203) extend downwards to form a connecting part (204), the connecting part (204) is rotatably connected with a rotating shaft (205), and the rotating shaft (205) is disposed in the through slot (101) and can move in the front-back direction of the seat.

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