CN218105346U - Stable telescopic supporting device suitable for seat and seat - Google Patents

Abstract

The utility model relates to a seat manufacturing and designing field, concretely relates to design of back portion of seat. The above technical purpose of the present invention can be achieved by the following technical solutions: a stable telescopic supporting device suitable for a seat comprises a seat frame, a back tracing piece for supporting the waist and back of a user, a main elastic piece for providing horizontal front and back direction elasticity for the back tracing piece, a plate mounting seat and a sliding base, wherein an adjusting rail extending in the horizontal front and back direction is arranged on a seat body; the slide base is provided with an operation locking device for locking the relative position with the board mount. An object of the utility model is to overcome prior art's is not enough, provides a stable flexible strutting arrangement and a seat suitable for seat, under control cost's prerequisite, linear movement around the supporting piece, the action orbit is stable accurate, and is stable not have the skew to the conflict at human back portion, and can lock strutting arrangement and freely pursue the switching of back of the body state.

Description

Stable telescopic supporting device suitable for seat and seat

Technical Field

The utility model relates to a seat manufacturing and designing field, concretely relates to design of back portion of seat.

Background

A chair is a piece of furniture that is used in a wide variety of daily activities and works, and generally includes a base, a backrest, a support structure, armrests, and the like. For example, chinese patent publication No. CN201620974125.9 discloses a chair, which can be supported by the back, waist, buttocks and arm rests during use, thereby improving the comfort of human body.

In the using process of the seat, the supporting and abutting area of the seat and the waist and back of the human body is large, and the position is a main supporting and stressed position, so that the abutting structure of the seat to the waist and back of the human body determines the comfort of the seat to a great extent. In order to enhance the feeling of the waist-back collision, the waist-back of the chair is often designed by using an elastic moving structure.

The elastic moving structure is divided into a rotary type and a direct push type, the rotary type is the waist support seat disclosed in Chinese patent document with publication number CN202210377936.0, the waist support is driven by the elastic component to rotate in the horizontal direction by taking the rotating shaft as the shaft, thereby realizing dynamic conflict to the waist and the back of a human body. However, the seat is complicated in structure and high in cost. The direct-push type lumbar support seat has a simple structure and low cost, and for example, chinese patent document CN201621312965.5 discloses an automatic telescopic lumbar support structure for a seat, wherein a spring is connected between a lumbar support and a backrest, and the spring extends in a horizontal direction, so that the lumbar support is driven by the elastic force of the spring to extend forwards to be closely attached to the lumbar of a human body.

However, the design of the direct-push type lumbar-back contact has certain technical defects that the running direction of the compression and release of the spring is relatively free, and the lumbar support can move laterally and vertically in the process of advancing and retreating. On one hand, the displacement causes the elastic performance to be not uniform enough, and the elastic feedback experience of the user is not good, and on the other hand, the deviation of the displacement also reduces the service life of each component. In addition, the user needs to adjust the back-tracking effect of the waist support and the like.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's is not enough, provides a stable flexible strutting arrangement and a seat suitable for seat, under control cost's prerequisite, linear movement around the supporting piece, the action orbit is stable accurate, and is stable not have the skew to the conflict at human back portion, and can lock strutting arrangement and freely pursue the switching of back of the body state.

The above technical object of the present invention can be achieved by the following technical solutions: a stable telescopic supporting device suitable for a seat comprises a seat frame, a back-chasing piece used for supporting the waist and back of a user, a main elastic piece providing horizontal front and back direction elasticity for the back-chasing piece, a plate mounting seat and a sliding base, wherein the sliding base is connected with the seat frame, and the plate mounting seat is connected with the back-chasing piece and is in sliding connection with the sliding base;

the board mounting seat comprises a seat body, a main slide way extending in the horizontal front-back direction is concavely arranged on the seat body, the sliding base comprises a guide strip extending into the main slide way, the guide strip comprises a pin groove extending in the horizontal front-back direction, and a positioning pin used for sliding on the pin groove is connected to the board mounting seat;

the seat body is provided with an adjusting rail extending in the horizontal front-back direction;

the sliding base is provided with an operation locking device used for locking the relative position of the sliding base and the plate mounting seat, and the operation locking device comprises a locking buckle used for being clamped and fixed on different positions of the adjusting rail.

As the utility model discloses a preferred, the adjustment rail contains a plurality of block teeth of evenly arranging at the horizontal fore-and-aft direction, the locking is detained and is contained the confession the latch groove that the block tooth got into.

As the utility model discloses a preferred, operation locking means install in sliding base's lower surface, the confession has been seted up to the sliding base lower surface the groove that passes through that operation locking means passes through, sliding base contains the spacer, operation locking means contain with spacer fixed connection's link firmly.

As the optimization of the utility model, the fixed connection piece comprises an upper clamping piece and a lower clamping piece, and the positioning piece is positioned between the two clamping pieces.

As the utility model discloses a preferred, operation locking means still contains and is used for the pulling locking is detained wire drawing and the drive that moves down the resilience piece is detained to the locking.

As the utility model discloses a preferred, the wire drawing upper end is connected with the top pearl, the locking is detained and is contained the master block, wire drawing groove and top pearl groove have been seted up on the master block.

As the utility model discloses a preferred, the outer arris that touches is equipped with a little in sliding base's the inner chamber, touch the arris a little and extend at horizontal fore-and-aft direction.

As the utility model discloses a preferred, be equipped with the retaining ring in sliding base's the inner chamber, the one end of main elastic component is installed in the retaining ring, be equipped with the sharp post that extends at horizontal fore-and-aft direction in the inner chamber of pedestal, the other pot head of main elastic component is established on the straight post.

As a preferred aspect of the present invention, the outer ring of the main elastic member is provided with a buffer sleeve, and the seat body is provided with an arc-shaped laminating edge matched with the size of the buffer sleeve.

As the utility model discloses a preferred, the board mount pad contain with the connecting axle that the pedestal is connected, pursue the back of the body piece with the connecting axle is connected and is relative from this the pedestal is rotatory in vertical direction, install on the pedestal and be used for providing it keeps away from to pursue the back of the body piece the lower ejection piece of pedestal thrust, ejection piece is in down mounted position on the pedestal is less than the connecting axle.

As the utility model discloses a preferred, the piece of following after contains with the main contact piece of human back contact and with the swing connecting piece that main contact piece is connected, the swing connecting piece with the connecting axle is connected.

As the utility model discloses a preferred, the swing connecting piece contains well outer lug and is located the limit laminating portion of both sides about well outer lug, well outer lug to pedestal direction is outstanding outward, the lower pop-up piece is installed the downside on the limit laminating portion.

As the utility model discloses a preferred, the indent is offered on the pedestal and is used for holding the chamber that holds of swing connecting piece, the evagination shape of well evagination portion is triangle-shaped, hold chamber lateral wall slope fluting, with well evagination portion shape adaptation.

Preferably, the seat body is provided with a material placing hole for installing the lower ejection piece.

A seat comprises a stable telescopic supporting device suitable for the seat, a stool and chair legs, wherein the stool is connected with a chair frame, and the chair legs are connected with the stool.

To sum up, the utility model discloses following beneficial effect has:

1. the user can conveniently switch the back-tracing piece between the free state and the locking state by operating the wire drawing.

2. The scheme adopts a design of 'double limitation of a strip channel pin groove'. The cooperation of gib block and main slide, the cooperation of locating pin and cotter way play and do stable front and back direction spacing effect for the removal of pursuing the back of the body spare.

3. The invagination reinforcement body not only strengthens the structural strength of the connecting position, but also more importantly increases the contact area with the positioning pin, the original line contact is changed into surface contact, and the positioning stability of the positioning pin is stronger and is not easy to overturn.

4. Contain a plurality of cassette arris on the chair frame, the card is at sliding base's surface for this motionless piece of sliding base is more stable, further guarantees the precision of sliding guide.

5. The micro-contact edges are distributed on a plurality of surfaces, on one hand, the auxiliary function of front and back guiding is also realized, on the other hand, the contact area between the seat body and the sliding base in the sliding process is prevented from being too large, and the micro-contact edges enable the seat body to move back and forth more smoothly

6. In the process of spring extension compression, cushion collar and straight line post all provide sharp direction for the spring, and the circular arc laminating limit not only provides the direction equally, still provides laminating supporting role, further promotes the directional stability of spring force.

7. In the initial state of the whole back-chasing piece, the lower part protrudes outwards slightly, and the upper part is in an inclined state of slightly retracting inwards slightly according to the lever principle, and the inclined state is always kept uniform with the angle of the main chair back, so that the visual effect is more harmonious and attractive.

8. The design mode of 'ejecting downwards and leaning upwards' is adopted, so that the main supporting part has a catering action on the upper part of the waist back of the human body moving backwards. When the waist and the back of the human body are pressed down by the action track, the main abutting part has an abutting effect of pursuing the back, so that the comfort of the attaching process is greatly increased, the local key support on the upper part of the waist and the back of the human body is enhanced, and the human engineering is met.

9. The design mode of 'triangular outer protrusion and inner groove matching' of the accommodating cavity and the swing connecting piece reduces the total length of the whole component in the horizontal front and back directions, facilitates space utilization of the whole structure, avoids the situation that a back-tracking component and a main seat back component are too far away in seat design, and ensures comfort.

10. The triangular shape design of the accommodating cavity and the swing connecting piece provides the maximum angle limit for the vertical turning angle of the back tracing piece, and avoids transition turning.

11. The back-tracking piece can be designed integrally or in a split manner from left to right, and has good universality.

Drawings

FIG. 1 is a schematic diagram of a first embodiment;

FIG. 2 is an operation locking device of the lower surface of the first embodiment;

FIG. 3 is a schematic view of the locking buckle;

FIG. 4 is a schematic diagram of the first embodiment;

FIG. 5 is a schematic view of the slide base;

FIG. 6 is a schematic view of a board mount;

FIG. 7 is a schematic view of a plate mount and a chaser;

FIG. 8 is a schematic view of another angle of FIG. 7;

FIG. 9 is a schematic view of a chasing member;

FIG. 10 is a schematic view of a board mount;

fig. 11 is a detailed view at the swing link.

In the figure: 1. the plate installation seat comprises a plate installation seat, 11, a seat body, 111, a linear column, 112, an arc-shaped joint edge, 113, an invagination reinforcing body, 12, a connecting shaft, 13, a shaft hole, 14, a containing cavity, 15, a storage hole, 16, a lower ejection piece, 17, a main slide way, 18, an auxiliary slide way, 19, an adjusting rail, 191, a clamping tooth, 2, a back tracing piece, 21, a main abutting piece, 22, a swinging connecting piece, 221, a middle and outer protrusion part, 222, a side joint part, 3, a sliding base, 31, a guide strip, 32, an auxiliary fixing strip, 33, a fixing ring, 34, a micro-contact edge, 35, a positioning piece, 36, a through groove, 311, a pin groove, 4, a chair frame, 41, a clamping seat edge, 5, a positioning pin, 6, a main elastic piece, 7, an operation locking device, 71, a wire drawing, 72, a rebound piece, 73, a locking buckle, 731, a main block, 732, a wire drawing grooves, 733, a top groove, 74 and 734.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Embodiment 1, as shown in fig. 1, a seat comprises a seat frame 4, wherein the seat frame 4 is a main body part of the seat and is further connected with a stool, an armrest, a chair leg and the like. The components such as the stool, the armrests, the chair legs, etc. are the same as those in the prior art, and the design of these components is not changed in this embodiment, so that they are not shown in fig. 1. The seat comprises a stable telescopic supporting device, and the supporting device is also the key design of the technical scheme. In fig. 1 five main components of the present case are listed, respectively a chair frame 4, a sliding base 3, a chasing back 2, a board mount 1 and an operation locking device.

As shown in fig. 1 and 4, the chair frame 4 is seen as a stationary part, and the slide base 3 is mounted on the chair frame 4 in a fixed manner without relative movement therebetween in this embodiment.

The board mount 1 is slidably mounted on the slide base 3 as a slide member in a horizontal front-rear direction. In the present document, the front-back direction means: the direction close to the waist and the back of the human body and the direction far away from the chair frame 4 are front; the direction far away from the waist and the back of the human body and the direction close to the chair frame 4 are the back. The chaser 2 is mounted on the front section of the board mount 1. (only a portion of the structure is shown in figure 1 for the backing member 2, other structures are not shown.)

The driving force for the sliding of the board mounting base 1 comes from the elastic force of the main elastic member 6, which is installed in the inner cavity formed by the sliding base 3 and the board mounting base 1, and both ends of the main elastic member respectively abut against the base 3 and the board mounting base 1. The main elastic member 6 can be an elastic member commonly used in the prior art, such as an elastic column, a spring, etc., and in this embodiment, a spring is taken as an example. The spring provides an outward spring force to the board mount 1, so that the body-tracing member 2 is attached to the back of the human body at all times. When the waist of the human body leans back, the plate mounting seat 1 moves backwards, and the spring is compressed.

In the scheme, the sliding track of the plate mounting seat 1 in the front-back direction is strictly limited and is limited to be a straight track, so that on one hand, the action track of the back-chasing piece 2 is accurate, the collision on the waist and the back of a human body is not deviated, and the collision effect is good; on the other hand, the side direction or the up-and-down displacement of each part when moving back and forth is avoided, the damage and the folding are avoided, and the service life of the parts is optimized.

The scheme adopts a design of 'double limitation of a strip channel pin groove'. Specifically, the side walls of the two ends of the seat body 11 are provided with inwardly concave main slideways 17, and the side walls of the sliding base 3 comprise inwardly and outwardly convex guide strips 31. The guide strip 31 and the main runner 17 are fitted to each other in shape and size, and extend in the horizontal front-rear direction. The positioning pins 5 are fixedly mounted on the housing 11, and the guide bar 31 is provided with pin grooves 311 extending in the horizontal front-rear direction, so that the positioning pins 5 slide in the pin grooves 311. So far, the cooperation of the guide strip 31 and the main slideway 17 and the cooperation of the positioning pin 5 and the pin slot 311 play a role of stable front and back guiding and limiting for the movement of the back-tracking piece 2.

As shown in fig. 6, in the inner cavity of the seat body 11, at a portion of the main slide 17, an inwardly protruding recessed reinforcement 113 is provided. This is because locating pin 5 is a direction atress piece of slip process, if too thin with main slide 17, not only the atress is unstable and easily destroys, and can regard as a line contact between main slide 17 and locating pin 5 approximately, makes locating pin 5 overturn in vertical direction easily, and the precision of direction can receive certain influence. The invagination reinforcement body 113 not only strengthens the structural strength of the connection position, but also increases the contact area with the positioning pin 5, changes the original line contact into surface contact, and ensures that the positioning pin 5 has stronger positioning stability and is not easy to overturn.

As shown in fig. 4 and 5, the auxiliary slide way 18 is provided on the upper surface of the seat body 11, and the auxiliary strip 32 matched with the upper surface of the slide base 3 is provided on the upper surface of the slide base, and both extend in the horizontal front-back direction to play a role of auxiliary guiding and positioning. The chair frame 4 comprises a plurality of clamping seat edges 41 clamped on the outer surface of the sliding base 3, so that the fixed part of the sliding base 3 is more stable, and the accuracy of sliding guiding is further ensured.

A plurality of micro-contact ridges 34 are protruded on the inner surface of the slide base 3, the micro-contact ridges 34 are distributed over a plurality of surfaces, and the individual micro-contact ridges 34 have a small volume and extend in the horizontal front-rear direction. It has two design considerations: on one hand, the auxiliary function of front and back guiding is also achieved, on the other hand, the contact area between the seat body 11 and the sliding base 3 in the sliding process is prevented from being too large, and the micro-contact edges 34 enable the seat body 11 to move back and forth more smoothly

As shown in fig. 5 and 6, one end of the spring is mounted in the retaining ring 33, and the other end is sleeved on the linear column 111. A buffer sleeve (not shown) is arranged on the outer side of the spring, and an arc-shaped attaching edge 112 is arranged at the corresponding position of the seat body 11 and has the size matched with the buffer sleeve. In the process of spring extension and compression, the cushion collar and the linear column 111 provide linear guide for the spring, and the arc attaching edge 112 also provides guide and attaching support, so that the directional stability of the spring force is further improved.

During the back-tracking movement of the back-tracking member 2 back and forth, the user can switch between the free state and the locked state of the back-tracking member 2 by operating the locking device 7.

Specifically, as shown in fig. 1, 2 and 3, a through groove 36 is provided on the lower surface of the slide base 3 for the operation of the locking device 7 to pass through, and this grooved space also facilitates the operation of the individual parts of the locking device 7 for maintenance and installation. Include the spacer 35 on sliding base 3's the lower surface, and be equipped with on the operation locking means 7 and link firmly 74, in this embodiment, link firmly 74 and be two nuts, one-on-one clamp is on spacer 35, realizes that whole operation locking means 7 is for sliding base 3's effective fixed.

When the backing member 2 needs to be in a free state, the user pulls down the string 71. The resilient member 72 may be a spring having a lower end abutting the fastening member 74 and an upper end abutting the locking buckle 73. The pull-down force overcomes the elastic force of the spring and drives the locking buckle 73 to move downwards. As shown in fig. 3 and 6. The base 11 is provided with an adjustment rail 19 including a plurality of engaging teeth 191 arranged horizontally and longitudinally. The upper end of the locking buckle 73 includes a latch groove 734 engaged with the latch tooth 191. When the locking buckle 73 moves downwards, the latch groove 734 is separated from the corresponding latch tooth 191, the board mounting base 1 can move freely, and the chasing back piece 2 is in a free state.

When the backing member 2 is required to be in the locked state, the user controls the pull wire 71 to rebound, and the elastic force of the spring can provide the upward elastic force of the locking buckle 73. At this time, the detent groove 734 and the corresponding detent tooth 191 are engaged, the board mount 1 cannot move freely, and the chaser 2 is in the locked state.

A top bead is connected to the upper part of the wire 71, and a wire drawing groove 732 and a top bead groove 733 for facilitating the attachment of the wire 71 and the attachment of the top bead are formed in the main block 731 of the locking buckle 73.

As shown in fig. 7 and 8, the connection between the seat body 11 and the back-tracking member 2 is a hinge joint, and the back-tracking member 2 can rotate in the vertical direction. Specifically, the side wall of the seat body 11 is provided with a shaft hole 13, the back-tracking piece 2 is connected with a connecting shaft 12, and the connecting shaft 12 is inserted into the shaft hole 13. The connecting shaft 12 extends in the horizontal direction, and the top-back member 2 is turned in the vertical direction with the connecting shaft 12 as an axis.

As shown in fig. 9, 10 and 11, the present embodiment adopts a design of "triangular outer protrusion and inner groove matching". Specifically, the main body of the back-tracking member 2 is a main contact member 21, and a swinging connecting member 22 is provided behind the main body. The swing connector 22 includes a middle protrusion 221 protruding backward, i.e., toward the seat body 11, and edge attaching portions 222 at upper and lower sides of the middle protrusion 221. The middle and outer protrusion 221 is substantially triangular in the present embodiment, and the side attaching portion 222 is planar and completely attached to the main contact 21. The connecting shaft 12 is connected to the middle and outer protrusions 221. The seat body 11 is provided with a concave accommodating cavity 14 inwards, and the shape of the accommodating cavity is matched with that of the middle and outer protruding parts 221 for accommodating the swing connecting piece 22.

According to the design mode of matching the triangular outer protrusion and the inner groove, on one hand, the outer protrusion and the inner groove reduce the total length of the whole part in the horizontal front-back direction, the space of the whole structure is conveniently utilized, the situation that the back pursuing part is too far away from the main seat back part in the seat design is avoided, and the comfort degree is ensured. On the other hand, the matching mode of the upper inclined plane and the lower inclined plane of the triangle also provides the maximum angle limit for the vertical overturning angle of the back-tracing piece 2, and the transition overturning is avoided. In a third aspect, when a human body leans on the main contact 21, the inner groove inclined wall of the seat body 11 can provide a supporting force for the middle and outer protrusions 221, thereby enhancing the supporting effect of the back-tracking element 2 on the human body lumbar.

In the present case, an important design is "pop-up down, lean-up". Specifically, as shown in fig. 10 and 11, a lower ejection member 16 is further included, and this member is an elastic member that provides an elastic force pushing out, such as a spring, an elastic column, an elastic pad, or the like. In this embodiment, the most common spring can be directly selected. And the spring is not uniformly installed up, down, left and right, but only installed at the lower part. Specifically, an object placing hole 15 is provided at a position near the lower side of the accommodating chamber 14, one end of the spring is installed at the object placing hole 15, and the other end is connected to the edge attaching portion 222 at the lower side in fig. 11.

Such a design mode of "pop-up down and lean on up" makes the whole body 2 not be vertical to the horizontal plane by a complete 90 ° in the initial state, but a state of inclination that the lower part is slightly protruded outwards, and the upper part is slightly retracted inwards due to the lever principle, and the state of inclination is always kept uniform with the angle of the main chair back, and is more harmonious and beautiful in visual effect. On the other hand, it is also a more important aspect that the human body is tilted forward when the user sits on the chair for typing and working. At this time, the user wants to contact with the back-tracking member 2 more, and the human body leans back with the coccyx as the axis. In this movement locus, the lower part of the lumbar back is more rearward than the upper part of the lumbar back, i.e. closer to the seat body 11. The lower part of the main contact piece 21 is protruded due to the elastic force, so that the lower part of the waist and the lower part of the main contact piece 21 are firstly collided, and the lower part of the main contact piece 21 moves backwards under the backward pressing of the human body. Then, due to the influence of the lever action, the upper half part of the main interference piece 21 can rotate forwards, and a catering action is provided for the upper part of the waist back of the human body moving backwards. When the waist and the back of the human body are pressed down by the action track, the main contact piece 21 has a back-tracing and catering contact effect, so that the comfort of the fitting process is greatly improved, the local key support on the upper part of the waist and the back of the human body is enhanced, and the human engineering is met.

Claims (15)

1. The utility model provides a stabilize flexible strutting arrangement suitable for seat, contains chair frame (4), is used for supporting user's back of the body spare (2) of pursuing of back of the body and gives it provides main elastic component (6) of horizontal fore-and-aft direction elasticity to pursue back spare (2), its characterized in that: the chair comprises a chair frame (4), a plate mounting seat (1) and a sliding base (3), wherein the sliding base (3) is connected with the chair frame (4), and the plate mounting seat (1) is connected with the back chasing piece (2) and is in sliding connection with the sliding base (3); the board mounting seat (1) comprises a seat body (11), a main slide way (17) extending in the horizontal front-back direction is concavely arranged on the seat body (11), the sliding base (3) comprises a guide strip (31) extending into the main slide way (17), the guide strip (31) comprises a pin groove (311) extending in the horizontal front-back direction, and a positioning pin (5) used for sliding on the pin groove (311) is connected to the board mounting seat (1); the seat body (11) is provided with an adjusting rail (19) extending in the horizontal front-back direction; the sliding base (3) is provided with an operation locking device (7) used for locking the relative position of the plate mounting seat (1), and the operation locking device (7) comprises a locking buckle (73) used for being clamped and fixed on different positions of the adjusting rail (19).

2. A stabilized telescopic support device, suitable for seats, according to claim 1, characterized in that: the adjusting rail (19) comprises a plurality of clamping teeth (191) which are uniformly distributed in the horizontal front-back direction, and the locking buckle (73) comprises a clamping tooth groove (734) for the clamping teeth (191) to enter.

3. A stabilized telescopic support device suitable for seats according to claim 1, characterized in that: operation locking means (7) install in the lower surface of sliding seat (3), the confession has been seted up to sliding seat (3) lower surface pass through groove (36) that pass through that operation locking means (7) pass through, sliding seat (3) contain spacer (35), operation locking means (7) contain with spacer (35) fixed connection's link firmly piece (74).

4. A stabilized telescopic support device, suitable for seats, according to claim 3, characterized in that: the fixing piece (74) comprises an upper clamping piece and a lower clamping piece, and the positioning piece (35) is positioned between the two clamping pieces.

5. A stabilized telescopic support device suitable for seats according to claim 4, wherein: the operation locking device (7) further comprises a drawing wire (71) for pulling the locking buckle (73) to move downwards and a rebound piece (72) for driving the locking buckle (73) to rebound.

6. A stabilized telescopic support device suitable for seats according to claim 5, wherein: the upper end of the wire drawing (71) is connected with a top bead, the locking buckle (73) comprises a main block (731), and a wire drawing groove (732) and a top bead groove (733) are formed in the main block (731).

7. A stabilized telescopic support device suitable for seats according to claim 1, characterized in that: the inner cavity of the sliding base (3) is externally provided with micro-contact ribs (34) in a protruding mode, and the micro-contact ribs (34) extend in the horizontal front-back direction.

8. A stabilized telescopic support device, suitable for seats, according to claim 1, characterized in that: be equipped with retention ring (33) in the inner chamber of sliding base (3), the one end of main elastic component (6) is installed in retention ring (33), be equipped with straight line post (111) that extend at the horizontal fore-and-aft direction in the inner chamber of pedestal (11), the other pot head of main elastic component (6) is established on straight line post (111).

9. A stabilized telescopic support device suitable for seats according to claim 8, wherein: the outer ring cover of main elastic component (6) is equipped with the cushion collar, include on pedestal (11) be circular arc and with the circular arc laminating limit (112) that the cushion collar size matches.

10. A stabilized telescopic support device suitable for seats according to claim 1, characterized in that: the board mounting seat (1) comprises a connecting shaft (12) connected with the seat body (11), the back pursuing piece (2) is connected with the connecting shaft (12) and is rotated in the vertical direction relative to the seat body (11), a lower ejection piece (16) used for providing the thrust of the back pursuing piece (2) far away from the seat body (11) is mounted on the seat body (11), and the mounting position of the lower ejection piece (16) on the seat body (11) is lower than the connecting shaft (12).

11. A stabilized telescopic support device, suitable for seats, according to claim 10, wherein: pursuit back of body spare (2) contain with main conflict piece (21) of human back contact and with swing connecting piece (22) that main conflict piece (21) are connected, swing connecting piece (22) with connecting axle (12) are connected.

12. A stabilized telescopic support device, suitable for seats, according to claim 11, characterized in that: the swing connecting piece (22) comprises a middle and outer protruding part (221) and edge attaching parts (222) positioned on the upper side and the lower side of the middle and outer protruding part (221), the middle and outer protruding part (221) protrudes outwards towards the seat body (11), and the lower ejecting piece (16) is installed on the edge attaching parts (222) on the lower side.

13. A stabilized telescopic support device, suitable for use in a seat, according to claim 12, wherein: the base body (11) is provided with an accommodating cavity (14) which is used for accommodating the swing connecting piece (22) in an inwards concave mode, the outward protruding shape of the middle and outer protruding portion (221) is triangular, and the side wall of the accommodating cavity (14) is provided with an inclined groove and is matched with the shape of the middle and outer protruding portion (221).

14. A stabilized telescopic support device, suitable for seats, according to claim 10, wherein: and the base body (11) is provided with an object placing hole (15) for installing the lower ejection piece (16).

15. A seat, characterized in that it comprises a stable telescopic support for a seat according to any one of claims 1 to 14, and also comprises a stool connected to said frame (4) and legs connected to said stool.

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