CN216907361U - Lifting chair - Google Patents

Abstract

The utility model discloses a lifting seat which comprises a seat board, seat legs, a slide rail, a linkage mechanism and a fixed block, wherein the seat board is rectangular, and four corners of the seat board are fixedly connected with sliding parts; the number of the chair legs is four, and the chair legs correspond to the sliding parts one by one; two ends of the slide rail are respectively connected with the chair legs and the sliding part in a sliding way; the linkage mechanism comprises two gears and an annular chain, the two gears are pivotally arranged at two ends of the sliding rail and are symmetrically arranged, and the chain is wound on the two gears and is meshed with the gears; the fixed block is fixedly arranged on the chain, and the fixed block is provided with two blocks, wherein one block is fixedly connected with the sliding piece, and the other block is fixedly connected with the chair leg; wherein, two fixed blocks are located the both sides of the line of the rotation center of two gears. Through the transmission cooperation of gear and chain, including the sliding fit between slide rail and slider and the chair foot can realize going up and down, replace the lifting structure that uses driving pieces such as cylinder in the past, improve the security of using.

Description

Lifting chair

Technical Field

The utility model relates to the field of furniture, in particular to a lifting seat.

Background

The lifting seat is a chair for people to sit, and is characterized in that the height of a seat plate on the seat can be adjusted, and mechanisms for adjusting the height in the prior art are various in types and various in forms; wherein, the most common structure of application just sets up the cylinder between bedplate and base, and then people can change the bedplate height according to people's weight automatically after sitting on the bedplate, and the potential safety hazard of this type of lift seat is great, and easy because the cylinder is ageing and induce bedplate and base to break away from suddenly or even burst, and then causes bodily injury to the personnel of taking.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a lifting seat which can improve the use safety.

The lifting seat comprises a seat plate, seat legs, a sliding rail, a linkage mechanism and a fixed block, wherein the seat plate is rectangular, and four corners of the seat plate are fixedly connected with sliding parts; the four chair legs are arranged, and the chair legs correspond to the sliding parts one by one; two ends of the slide rail are respectively connected with the chair legs and the sliding part in a sliding manner; the linkage mechanism comprises two gears and an annular chain, the two gears are pivotally arranged at two ends of the sliding rail and are symmetrically arranged, and the chain is wound on the two gears and is meshed with the gears; the fixed block is fixedly arranged on the chain, and two fixed blocks are arranged, wherein one fixed block is fixedly connected with the sliding piece, and the other fixed block is fixedly connected with the chair leg; the two fixing blocks are positioned on two sides of a connecting line of the rotation centers of the two gears.

The lifting seat provided by the embodiment of the utility model at least has the following beneficial effects: in use, the seat board is only needed to be held by hand and lifted upwards, the sliding piece can slide relative to the sliding rail, the sliding rail can slide relative to the chair legs, the lifting can be realized through the transmission fit of the gear and the chain and the sliding fit among the sliding rail, the sliding piece and the chair legs, the lifting structure of driving pieces such as an air cylinder and the like in the past is replaced, and the use safety is improved.

According to some embodiments of the utility model, the slide is a ball slide.

According to some embodiments of the utility model, the seat plate is provided with a backrest, and a protrusion is provided below the backrest, and an upper surface of the protrusion is arc-shaped in a cross section of the backrest.

According to some embodiments of the utility model, a groove is formed in the surface of the sliding part, a telescopic block is inserted into the groove, a through hole is formed in one end of the telescopic block, the chain penetrates through the through hole, and a locking block is rotatably connected to one end, far away from the chain, of the telescopic block; and the locking block is pulled upwards so that the telescopic block extends out of the sliding piece.

According to some embodiments of the utility model, the lock block has an abutment surface, the lock block being pulled up to bring the abutment surface into abutting engagement with a surface of the slider.

According to some embodiments of the utility model, the end of the chair leg is sleeved with a plastic sleeve.

According to some embodiments of the utility model the front portion of the seat plate is convex and the rear portion of the seat plate is concave, the upper surface of the seat plate being undulated in a cross-section of the seat plate.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the following figures and examples, in which:

FIG. 1 is a schematic view of a lift seat according to an embodiment of the present invention;

FIG. 2 is a schematic view of the connection of the rails and slides of the lift seat of an embodiment of the present invention;

fig. 3 is a schematic connection diagram of the sliding member, the telescopic block and the locking block of the lifting seat according to the embodiment of the utility model.

100. A seat plate; 110. a slider; 111. a groove; 120. a backrest; 121. a protrusion; 130. a telescopic block; 131. a through hole; 140. a locking block; 141. an abutting surface; 200. a chair leg; 210. a plastic sleeve; 300. a slide rail; 400. a linkage mechanism; 410. a gear; 420. a chain; 500. a fixed block;

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 and 2, the lifting seat according to the embodiment of the present invention includes a seat plate 100, a seat leg 200, a slide rail 300, a linkage mechanism 400, and a fixing block 500, wherein the seat plate 100 is rectangular, and four corners of the seat plate 100 are fixedly connected with sliders 110; the number of the chair legs 200 is four, and the chair legs 200 correspond to the sliding parts 110 one by one; two ends of the slide rail 300 are respectively connected with the chair leg 200 and the sliding part 110 in a sliding way; the linkage mechanism 400 comprises two gears 410 and an annular chain 420, the two gears 410 are pivotally mounted at two ends of the slide rail 300 and symmetrically arranged, and the chain 420 is wound on the two gears 410 and meshed with the gears 410; the fixing block 500 is fixedly installed on the chain 420, and two fixing blocks 500 are provided, one of which is fixedly connected with the sliding member 110 and the other of which is fixedly connected with the chair leg 200; wherein, the two fixing blocks 500 are located at both sides of a line connecting the rotation centers of the two gears 410.

In the lifting seat of this embodiment, referring to fig. 2, a chain 420 surrounds the outside of a gear 410, a ring-shaped chain 420 is in the shape of an oval, two ends of the oval are respectively provided with a gear 410, both gears 410 are engaged with the chain 420, when one gear 410 rotates, the chain 420 can be driven to slide, and the other gear 410 is driven to rotate by the chain 420, wherein the gear 410 is mounted on a sliding rail 300, therefore, the length direction of the oval chain 420 is collinear with the sliding direction of the chair leg 200 and the slider 110, in practical use, by pulling the slider 110, a fixed block 500 fixed on the slider 110 moves along with the slider 110, and during the movement, the chain 420 can be driven to roll, wherein the path of the chain 420 is limited by the gears 410 arranged at two ends of the oval chain 420, so that the movement track is always kept on the oval, accordingly, the fixing blocks 500 fixed to the chair leg 200 move together, and it can be understood that the relative movement between the chair leg 200 and the sliding rail 300 also occurs, wherein, because the two fixing blocks 500 are located at two sides of the line connecting the rotation centers of the two gears 410, the moving directions of the sliding member 110 and the chair leg 200 are always kept opposite, that is, the sliding member 110 and the chair leg 200 have the following two moving modes:

1. close to each other and reduce the height of the lifting seat;

2. away from each other and raise the height of the lift seat.

As can be seen from the above, in a specific using process, the user only needs to hold the seat board 100 by hand and lift the seat board 100 upwards, so that the sliding element 110 can slide relative to the sliding rail 300, and the sliding rail 300 can slide relative to the chair leg 200, and the lifting can be realized through the transmission cooperation of the gear 410 and the chain 420, and the sliding cooperation between the sliding rail 300 and the sliding element 110 as well as between the chair leg 200, so as to replace the conventional lifting structure using driving elements such as an air cylinder, and improve the safety of use.

In the embodiment of the utility model, the height of the lifting seat can be raised or lowered by directly lifting or lowering the seat plate 100, after the height of the lifting seat is changed, in order to fix the stability of the whole lifting seat, the surface of the sliding part 110 is provided with the groove 111, the groove 111 is inserted with the telescopic block 130, one end of the telescopic block 130 is provided with the through hole 131, the chain 420 is arranged through the through hole 131, and one end of the telescopic block 130, which is far away from the chain 420, is rotatably connected with the locking block 140; wherein, the locking block 140 is pulled up to make the telescopic block 130 extend out of the sliding member 110.

Specifically, referring to fig. 3, when the locking block 140 is pulled upward along the direction a, the telescopic block 130 extends out of the sliding member 110, that is, the telescopic block 130 pulls the chain 420, so that the chain 420 in the original balanced state is in a tightened state, the friction between the chain 420 and the gear 410 is increased, and an external force cannot pull the seat plate 100, so that the fixed block 500 fixedly connected with the seat plate 100 drives the chain 420 to move, thereby fixing the height of the whole lifting seat; it should be noted that it is not possible to continue pulling the locking block 140 by the user during use to tighten the chain 420, and therefore, the locking block 140 has an abutment surface 141 and the locking block 140 is pulled up to bring the abutment surface 141 into abutting engagement with the surface of the slider 110. When the abutment surface 141 is in abutting engagement with the surface of the slider 110, the position of the lock block 140 is fixed and the telescopic block 130 is kept pulled out of the surface of the slider 110.

In contrast, releasing the locking block 140, specifically, pressing the locking block 140 downward, will cause the telescopic block 130 to return under the elastic force of the chain 420, and cause the telescopic block 130 to approach the slide rail 300 again, so that the chain 420 can move normally.

In order to improve the sliding fluency, in the embodiment of the present invention, the slide rail 300 is a ball slide rail 300. The ball slide rail 300 can reduce the friction between the slide rail 300 and the chair leg 200 and the slider 110 through rolling friction, thereby improving the sliding fluency and the user experience.

It should be noted that, referring to fig. 1, a backrest 120 is further installed on the seat plate 100, a protrusion 121 is disposed below the backrest 120, and an upper surface of the protrusion 121 is arc-shaped in a cross section of the backrest 120. The protruding part 121 with the arc-shaped section can better match with the physiological curvature of the back of a human body, and provides better support for the human body.

Similarly, in some embodiments, referring to FIG. 1, the front portion of the seat pan 100 is convex and the rear portion of the seat pan 100 is concave, and the upper surface of the seat pan 100 is wavy in cross-section of the seat pan 100. The comfortable sitting postures of the buttocks and the legs of the user in the sitting posture are effectively matched, and the comfort level is improved.

In order to prevent the lifting chair from slipping on the ground during use, the ends of the chair legs 200 are sleeved with plastic sleeves 210. The plastic sleeve 210 increases friction with the ground and avoids slipping of the lift seat.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (7)

1. A lift seat, comprising:

the seat plate (100) is rectangular, and sliding pieces (110) are fixedly connected to four corners of the seat plate (100);

the four chair legs (200) are arranged, and the four chair legs (200) correspond to the sliding parts (110) one by one;

the two ends of the slide rail (300) are respectively connected with the chair legs (200) and the sliding part (110) in a sliding manner;

the linkage mechanism (400) comprises two gears (410) and an annular chain (420), the two gears (410) are pivotally mounted at two ends of the sliding rail (300) and are symmetrically arranged, and the chain (420) is wound on the two gears (410) and is meshed with the gears (410);

the fixing block (500) is fixedly arranged on the chain (420), two fixing blocks (500) are arranged, one fixing block is fixedly connected with the sliding piece (110), and the other fixing block is fixedly connected with the chair leg (200);

the two fixing blocks (500) are positioned on two sides of a connecting line of the rotation centers of the two gears (410).

2. The lift seat of claim 1, wherein the slide (300) is a ball slide (300).

3. The elevating seat as claimed in claim 1, wherein a backrest (120) is installed on the seat plate (100), a protrusion (121) is provided under the backrest (120), and an upper surface of the protrusion (121) is arc-shaped in a cross-section of the backrest (120).

4. The lifting seat as claimed in claim 1, wherein a groove (111) is formed on the surface of the sliding member (110), a telescopic block (130) is inserted into the groove (111), a through hole (131) is formed at one end of the telescopic block (130), the chain (420) is inserted into the through hole (131), and a locking block (140) is rotatably connected to one end of the telescopic block (130) far away from the chain (420); wherein, the locking block (140) is pulled up, so that the telescopic block (130) extends out of the sliding piece (110).

5. The lift seat of claim 4, wherein the locking block (140) has an abutment surface (141), the locking block (140) being pulled up to bring the abutment surface (141) into abutting engagement with a surface of the slider (110).

6. The elevating seat as claimed in claim 1, wherein the end of the leg (200) is sleeved with a plastic sleeve (210).

7. The lift seat as claimed in claim 1, wherein the front portion of the seat pan (100) is convex and the rear portion of the seat pan (100) is concave, and wherein the upper surface of the seat pan (100) is undulated in the cross-section of the seat pan (100).

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