CN107095503A - A kind of Seatback device with regulatory function - Google Patents

Abstract

The invention discloses a kind of Seatback device with regulatory function, including seat body, the seat body includes supporting part, back and seat, the seat bottom is connected with supporting part, the back is arranged on seat one end, includes the adjustment portion of slide plate, connecting plate, spring, backrest and adjusting slider and connecting plate angle；The back is provided with slide rail, the slide plate is slidably connected by slide rail with back, the connecting plate lower end is hinged with slide plate, and the connecting plate is connected by spring with backrest, and the regulator site is connected between slide plate and connecting plate and respectively with adjusting slider and connecting plate.The present patent application has three degree of freedom, can adjust and adapt to the people of different building shape, improves comfort level.

Description

Seat back device with adjustment function

technical field

The invention relates to a chair specially suitable for a special purpose, in particular to a seat back device with an adjustment function.

Background technique

Sitting on the ground in ancient times, there were no chairs, but in the Song Dynasty, seats were produced. A seat is a seat with a backrest and some armrests. A backrest is something that a person leans against when sitting.

Nowadays, with the rapid development of science and technology, people's pressure is increasing day by day, and the pace of life is accelerating, which leads to more and more time for people to sit on chairs and work. However, the backrest part of existing chairs is generally a plane, and when a person sits on a chair for a long time, only the buttocks are in contact with the seat, and the waist and back cannot lean against the back of the chair. Product fatigue can even affect diseases such as the lumbar spine and affect human health.

There are also some seats with backrests now, but the backrests are not adjustable, and everyone's body shape is different, that is to say, different people are different in height, shortness, fatness and thinness. The contact points are also different, and when sitting on a seat back that does not conform to your body shape, not only cannot improve comfort, but even increase discomfort, so it is urgent to invent an adjustable seat back device.

Contents of the invention

The object of the present invention is to provide a seat back device with an adjustment function. The device has three degrees of freedom and can be adjusted to suit people of different body types, thereby improving comfort.

In order to achieve the above object, the basic scheme of the present invention is as follows: a seat back device with an adjustment function, comprising a seat body, the seat body comprising a support portion, a backrest portion and a seat surface, and the lower part of the seat surface is connected to the seat surface. The support part is connected, and the backrest part is arranged on one side of the chair surface, and also includes a slide plate, a connecting plate, a spring, a backrest and an adjusting part for adjusting the angle of the slide plate and the connecting plate; the backrest part is provided with a slide rail, and the slide plate The slide rail is slidably connected with the backrest part, the lower end of the connecting plate is hinged with the sliding plate, the connecting plate is connected with the backrest through a spring, and the adjusting part is located between the sliding plate and the connecting plate and is respectively connected with the adjusting sliding plate and the connecting plate.

The working principle and beneficial effects of the present invention are as follows: the support part provides support for the entire seat. When a person sits on a seat, the person's buttocks are in contact with the seat surface, but in the present invention there is a backrest between the backrest part and the person's lower back, so that the person's lower back can lean on the backrest to reduce fatigue. Enhanced comfort. In addition, the backrest is installed on the connecting plate, and the connecting plate is arranged on the sliding plate, and the sliding plate is slidably connected with the backrest part through the slide rail, so that the position of the backrest can be adjusted according to the body shape of the person, and the backrest can be adjusted up and down along the backrest part. Make it at different heights and adapt to different people. Moreover, there is a spring between the connecting plate and the backrest. When a person leans on the backrest, there will be a pressure on the backrest. The force of the spring can also produce elastic deformation. Compared with people leaning directly on it, there is a buffer. The spring is arranged to adjust the horizontal distance between the backrest and the backrest, so as to adapt to different people. In addition, the lower part of the connecting plate is hinged with the skateboard, that is, through the adjustment part, the connecting plate is rotated at an angle along the skateboard, that is, the angle between the backrest and the backrest is adjusted, so that people of different body types can sit on it and adjust their waist or back according to their different sitting postures The force, reduce fatigue, improve comfort.

Preferred solution 1: As a preferred solution of the basic solution, it also includes an adjustment part, the adjustment part includes a knob, a rotating shaft and a cam, the cam is provided with a groove, one end of the connecting rod is located in the groove, and the rotating shaft and the cam It is coaxially arranged and one end of the rotating shaft is fixedly connected with the cam, the rotating shaft passes through the slide plate, and the other end of the rotating shaft is fixedly connected with the knob. In this way, one end of the connecting rod is driven at different heights on the slide plate by rotating the cam to drive the connecting plate to rotate along the slide plate, so as to facilitate the adjustment of the angle between the backrest and the back rest portion.

Preferred solution 2: As a preferred solution of preferred solution 1, the support part includes a telescopic rod and a support base, the support base is connected to one end of the telescopic rod, and the other end of the telescopic rod is connected to the seat surface. The support base provides support for the entire seat, and the telescopic rod is convenient for adjusting the height of the seat surface from the ground according to different heights of people.

Preferred option 3: As preferred option 1 or preferred option 2, the end of the backrest away from the skateboard is a curved surface, which can better fit the waist and back of the human body, making it more comfortable for people to sit on.

The preferred solution four: as the preferred solution of the preferred option three, it also includes two rod groups, the rod group is a rotating pair formed by two connecting rods, and the two ends of each rod group are respectively hinged with the backrest and the connecting plate, the backrest or the connection plate The plate is perpendicular to the two sides where the rod set is connected. The rod set can ensure that the backrest and the connecting plate are always in a parallel state.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of a seat back device with an adjustment function according to the present invention;

Fig. 2 is the structural representation of backrest;

Fig. 3 is a structural schematic diagram of the cam.

detailed description

The present invention will be described in further detail below by means of specific embodiments:

The reference signs in the accompanying drawings of the description include: support base 1, universal wheel 11, telescopic rod 2, seat surface 3, handle 31, backrest part 4, slide rail 41, slide plate 5, backrest 6, connecting plate 7, spring 8. Knob 9, rotating shaft 91, cam 92, groove 93, connecting rod 94, rod group 10.

The embodiment is basically shown in FIG. 1 : a seat back device with an adjustment function, including a seat body, and the seat body includes a support portion, a backrest portion 4 and a seat surface 3 . The support part includes a telescopic rod 2 and a support base 1, and five universal wheels 11 are connected to the bottom of the support base 1. The supporting base 1 is connected with one end of the telescopic rod 2 , and the other end of the telescopic rod 2 is connected with the seat surface 3 . The support base 1 provides support for the entire seat, and the telescopic rod 2 is convenient for adjusting the height of the seat surface 3 from the ground according to different heights of people. Both sides of the chair surface 3 are fixed with handles 31 respectively, and the back rest portion 4 is arranged at one end of the chair face 3. The device also includes a slide plate 5, a connecting plate 7, a spring 8 and a backrest 6; the back rest portion 4 is provided with a slide rail 41, The slide plate 5 is slidably connected with the back rest portion 4 through the slide rail 41 , the lower end of the connecting plate 7 is hinged with the slide plate 5 , and the connecting plate 7 is connected with the backrest 6 through the spring 8 . This device also comprises two rod groups 10, and rod group 10 is the rotating pair that two connecting rods form, and the two ends of each rod group 10 are hinged with backrest 6 and connecting plate 7 respectively, and backrest 6 or connecting plate 7 and rod The two sides connected by group 10 are perpendicular. The rod group 10 can ensure that the backrest 6 and the connecting plate 7 are always in a parallel state. The end of the backrest 6 away from the skateboard 5 is a curved surface, which can better fit the waist and back of the human body, making it more comfortable for people to sit on.

The supporting portion provides support for the entire seat. When a person sits on a seat, the person's buttocks are in contact with the seat surface 3, but in the present invention, there is a backrest 6 between the backrest part 4 and the person's lower back, so that the person's lower back can lean on the backrest 6 , reduce fatigue and improve comfort. In addition, the backrest 6 is installed on the connecting plate 7, and the connecting plate 7 is arranged on the slide plate 5, and the slide plate 5 is slidably connected with the backrest part 4 through the slide rail 41, so that the position of the backrest 6 can be specifically adjusted according to the body shape of the person, and the position of the backrest 6 can be adjusted along the The backrest part 4 adjusts the backrest 6 up and down so that it is at different heights to suit different people. Moreover, there is a spring 8 between the connecting plate 7 and the backrest 6. When a person leans on the backrest 6, there will be a pressure on the backrest 6. The spring 8 can also produce elastic deformation under the force. Compared with people directly leaning on the past, there is a buffer . The spring 8 is provided to adjust the horizontal distance between the backrest 6 and the backrest part 4, thereby adapting to different people. In addition, the lower part of the connecting plate 7 is hinged with the slide plate 5, that is, the connecting plate 7 is rotated an angle along the sliding plate 5 through the connecting rod 94, that is, the angle between the backrest 6 and the back rest portion 4 is adjusted, so that people of different body shapes can sit on it according to their Adjust the stress on the waist or back according to different sitting postures, reduce fatigue and improve comfort.

In this embodiment, an adjustment part is also included. The adjustment part includes a knob 9, a rotating shaft 91 and a cam 92. The cam 2 is provided with a groove 93, and one end of the connecting rod 94 is located in the groove 93. The rotating shaft 91 is coaxially arranged with the cam 92 and one end of the rotating shaft It is fixedly connected with the cam 92 , the rotating shaft 91 passes through the slide plate 5 , and the other end of the rotating shaft 91 is fixedly connected with the knob 9 . Drive connecting rod 94 one end at slide plate 5 different heights by turning cam 92 like this and drive connecting plate 7 to rotate along slide plate 5, conveniently adjust the angle between backrest 6 and the backrest portion.

Backrest 6 comprises support plate, back plate, cushion layer and leading screw, and support plate is connected with spring 8. The cushion layer wraps the backing board, and soft and fluffy substances such as sponge are filled between the cushioning layer and the backing board. One end of the leading screw is fixedly connected to the supporting plate, and the leading screw passes through the backing plate. There is an annular groove in the middle part of the leading screw, and there is an annular ring at the center of the backing plate, which is located in the annular groove and connected in rotation with the annular groove. A nut is connected to the inner center of the cushion layer, and the nut is threaded with the part where the leading screw passes through the backing plate. When people need to rest and want to lie on the seat, they can rotate the backing board and the backing board will rotate. At this time, the backing board will rotate along the supporting board. Axial movement, while the cushion layer and the lead screw are threaded through the nut, so when rotating, the lead screw and the nut produce axial relative displacement, that is, the middle part of the cushion layer will be depressed at this time, and the upper part of the person can be located in the depression , lie down and rest, have a certain blocking effect on the human body, and avoid falling from the backrest when turning over.

What is described above is only an embodiment of the present invention, and common knowledge such as specific structures and characteristics known in the scheme are not described here too much. It should be pointed out that for those skilled in the art, under the premise of not departing from the structure of the present invention, several modifications and improvements can also be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation of the present invention. Effects and utility of patents. The scope of protection required by this application shall be based on the content of the claims, and the specific implementation methods and other records in the specification may be used to interpret the content of the claims.

Claims (5)

1. a kind of Seatback device with regulatory function, including seat body, the seat body include supporting part, leaned against Portion and seat, the seat bottom are connected with supporting part, and the back is arranged on seat side, it is characterised in that also include The adjustment portion of slide plate, connecting plate, spring, backrest and adjusting slider and connecting plate angle；The back is provided with slide rail, described Slide plate is slidably connected by slide rail with back, and the connecting plate lower end is hinged with slide plate, and the connecting plate is by spring with leaning on Back of the body connection, the regulator site is connected between slide plate and connecting plate and respectively with adjusting slider and connecting plate.

2. a kind of Seatback device with regulatory function according to claim 1, it is characterised in that the adjustment portion Including knob, rotating shaft and cam, the cam is provided with groove, and described connecting rod one end is located in groove, and the rotating shaft and cam are same Axle is set and rotating shaft one end is fixedly connected with cam, and the rotating shaft passes through slide plate, and the rotating shaft other end is fixedly connected with knob.

3. a kind of Seatback device with regulatory function according to claim 2, it is characterised in that the supporting part Including expansion link and support base, the support base is connected with expansion link one end, and the expansion link other end is connected with seat.

4. a kind of Seatback device with regulatory function according to Claims 2 or 3, it is characterised in that described to lean on The back of the body is curved surface away from slide plate end.

5. a kind of Seatback device with regulatory function according to claim 4, it is characterised in that also including two Bar group, bar group is the revolute pair of two connecting rods formation, and the two ends of each bar group are hinged with backrest and connecting plate respectively, backrest or Two sides that connecting plate is connected with bar group are vertical.