Seat with adjustable seat board

Abstract

The present invention discloses a seat with an adjustable seat board, which includes a seat board, a base, an eccentric block and a seat top block. One end of the seat board is pivotally connected to the base through a first pivot shaft. One end of the eccentric block is pivotally connected to the base through a second pivot shaft. The seat top block is fixedly arranged on the lower side of the seat board. At least two engaging positions and a chute communicating with each of the engaging positions are provided on the side surface of the seat top block. The other end of the eccentric block is slidably arranged on the chute through a pin and can be selectively engaged in any one of the engaging positions. The seat with an adjustable seat board of the present invention has the advantages of adjustable seat board, simple structure and convenient use.

Description

Technical Field

[0001] The present invention relates to a seat, and particularly to a seat with an adjustable seat board. Background Art

[0002] For existing seats, such as office chairs, in order to adapt to the adjustment of sitting postures and improve comfort, a general adjustment mechanism is provided to adjust the backrest so that the backrest can be tilted. However, in the existing adjustment mechanism structure, only the backrest is adjustable, and most of the seat boards are not adjustable, resulting in inapplicability when the seat board needs to be adjusted to a tilted state in some occasions and the comfort cannot be further improved. In addition, although some seat boards are designed to be adjustable, their structures are complex and troublesome to adjust, and they are not convenient to use. Summary of the Invention

[0003] The purpose of the present invention is to provide a seat with an adjustable seat board, a simple structure and convenient use.

[0004] To achieve the above purpose, the seat with an adjustable seat board provided by the present invention includes a seat board, a base, an eccentric block and a seat top block. One end of the seat board is pivotally connected to the base through a first pivot shaft, one end of the eccentric block is pivotally connected to the base through a second pivot shaft, the seat top block is fixedly arranged on the lower side of the seat board, at least two engaging positions and a sliding groove communicating with each of the engaging positions are arranged on the side surface of the seat top block, and the other end of the eccentric block is slidably arranged on the sliding groove through a pin and can be selectively engaged in any one of the engaging positions.

[0005] Compared with the prior art, since the seat board of the present invention is pivotally connected to the base, one end of the eccentric block is pivotally connected to the base, and at least two engaging positions are arranged on the seat top block, so that the other end of the eccentric block is engaged in any one of the engaging positions, a stable triangular structure is formed among the base, the seat board and the eccentric block; in addition, by slidably arranging the other end of the eccentric block, the pin on the eccentric block can be selectively engaged in different engaging positions, so that the triangular structure formed by the base, the seat board and the eccentric block can be changed, and further the position of the seat board can be adjusted. Moreover, the connection relationship of the adjustment mechanism composed of the base, the seat board and the eccentric block is simple, so the structure is very simple, and only by rotating the eccentric block can the adjustment be carried out, and the use is very convenient.

[0006] Preferably, a first engaging position and a second engaging position in front of the first engaging position are arranged on the seat top block, and the horizontal height of the first engaging position is higher than that of the second engaging position. In this way, when the pin is engaged in the engaging position at the frontmost side of the seat board, the seat board can be in a forward-tilted state, achieving the purpose of forward-tilt adjustment.

[0007] Specifically, the highest point of the slide groove has a higher level than the first engaging position, so as to prevent the pin from accidentally sliding from the slide groove to the second engaging position from the first engaging position.

[0008] Preferably, the inner bottom surface of the seat top block is provided with a receiving groove, and an elastic sheet is provided in the receiving groove, and the elastic sheet elastically abuts against the pin. By using the elastic sheet, the pin can be clamped in the clamping position to prevent the pin from accidentally sliding out and causing the seat plate to accidentally slide.

[0009] Specifically, the accommodating groove is located in the middle of the inner bottom surface of the seat top block, and the outer peripheral contour of the elastic sheet corresponds to the engaging position and the sliding groove.

[0010] Specifically, the upper side of the elastic sheet is connected with a mounting member, and the mounting member is fixedly mounted on the upper side of the seat top block. The mounting member can be used to more firmly and stably arrange the elastic sheet in the receiving groove to avoid accidental ejection.

[0011] Specifically, the mounting member includes two connecting arms and two fixing seats, one fixing seat is fixed to the same end of the two connecting arms, and the other end of the two connecting arms is fixed to the other fixing seat, the two fixing seats are respectively sleeved on the sleeves on the upper side of the seat top block, and the fixing seats and the sleeves are fixedly connected by screws. By being sleeved and fixed on the fixing seat and the sleeve, the mounting member and the seat top block can be quickly positioned, and the connection between the mounting member and the seat top block can be more firmly and stably made.

[0012] Preferably, a mounting seat is fixed on the base, the mounting seat is provided with a limiting groove, the lower end of the eccentric block is located in the limiting groove. The side wall of the limiting groove can support the eccentric block, so that the force of the whole mechanism is more balanced and the structure is more stable.

[0013] Preferably, a handle is further included, and the handle is connected to the eccentric block to drive the eccentric block to swing around the second pivot axis. Providing the handle can make the eccentric block swing more easily, thereby improving the convenience of operation.

[0014] Preferably, it also includes a backrest, a back rotating member and an elastic member, one end of the back rotating member is pivotally connected to the base through the first pivot axis; the other end of the back rotating member is fixedly connected to the lower end of the backrest; the elastic member is arranged between the back rotating member and the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of a chair with an adjustable seat plate according to the present invention.

[0016] Figure 2It is an exploded view of the seat with an adjustable seat board according to the present invention.

[0017] Figure 3 It is a sectional view of the seat with an adjustable seat board according to the present invention in the normal state.

[0018] Figure 4 It is a structural diagram of the seat top block and the elastic sheet in the seat with an adjustable seat board according to the present invention.

[0019] Figure 5 It is a sectional view of the seat with an adjustable seat board according to the present invention in the forward-tilt state. Detailed implementation mode

[0020] To describe in detail the technical content, structural features, and achieved effects of the present invention, the following is a detailed description in conjunction with the implementation modes and with reference to the accompanying drawings.

[0021] As Figures 1 to 3 shown, the seat 100 with an adjustable seat board according to the present invention includes a seat board 1, a base 2, an eccentric block 3, and a seat top block 4. One end of the seat board 1 is pivotally connected to the middle of the base 2 through a first pivot shaft 5. One end of the eccentric block 3 is pivotally connected to the front end of the base 2 through a second pivot shaft 6. The seat top block 4 is fixedly arranged on the lower side of the seat board 1 by screws. At least two engaging positions and a chute 43 communicating with each engaging position are provided on the side surface of the seat top block 4. In this embodiment, the number of the engaging positions is two, and the number of the chutes 43 is one. The engaging positions are located at the ends of both ends of the chute 43. The other end of the eccentric block 3 is slidably arranged on the chute 43 through a pin 7 and can be selectively engaged in any one of the engaging positions. The seat 100 with an adjustable seat board further includes a handle 8, a backrest 9, a backrest adapter 10, and an elastic member 110. The handle 8 is connected to the eccentric block 3 to drive the eccentric block 3 to swing around the second pivot shaft 6. The setting of the handle 8 can make the eccentric block 3 swing more easily and improve the convenience of operation. One end of the backrest adapter 10 is pivotally connected to the base 2 through the first pivot shaft 5; the other end of the backrest adapter 10 is fixedly connected to the lower end of the backrest 9, and the backrest 9 is located at the rear side of the base 2; the elastic member 110 is arranged between the backrest adapter 10 and the base 2 to buffer the backrest 9.

[0022] Please refer to Figure 3 and Figure 4, a first engaging position 41 and a second engaging position 42 in front of the first engaging position 41 are provided on the seat top block 4, and the horizontal height of the first engaging position 41 is higher than that of the second engaging position 42. In this way, when the pin 7 is engaged with the engaging position at the frontmost side of the seat plate 1, the seat plate 1 can be in a forward-tilted state, achieving the purpose of forward-tilt adjustment. The sliding groove 43 is located between the first engaging position 41 and the second engaging position 42, and the sliding groove 43 has a downward-bent structure and is arranged to extend upward and then downward from the rear end to the front end. The horizontal height of the highest point of the sliding groove 43 is higher than that of the first engaging position 41. This can prevent the pin 7 from accidentally sliding from the first engaging position 41 to the second engaging position 42 along the sliding groove 43.

[0023] Please refer to again Figure 3 and Figure 4 , a receiving groove 44 is provided on the inner bottom surface of the seat top block 4, an elastic piece 120 is provided in the receiving groove 44, and the elastic piece 120 elastically abuts against the pin 7. By using the elastic piece 120, the pin 7 can be clamped in the engaging position to prevent the pin 7 from accidentally sliding out and causing the seat plate 1 to slide accidentally. The receiving groove 44 is located at the middle position of the inner bottom surface of the seat top block 4, and the outer peripheral contour of the elastic piece 120 corresponds to the engaging position and the sliding groove 43. An installation member 121 is connected to the upper side of the elastic piece 120, and the installation member 121 is fixedly installed on the upper side of the seat top block 4. By using the installation member 121, the elastic piece 120 can be set more firmly and stably in the receiving groove 44 to avoid accidental ejection. The installation member 121 includes two connecting arms 121a and two fixing seats 121b. One end of the two connecting arms 121a fixes one fixing seat 121b, and the other end of the two connecting arms 121a fixes the other fixing seat 121b. The two fixing seats 121b are respectively sleeved on the sleeve posts 45 on the upper side surface of the seat top block 4, and the fixing seat 121b and the sleeve post 45 are fixedly connected by screws. By setting the fixing seat 121b to be sleeved and fixed with the sleeve post 45, the installation member 121 and the seat top block 4 can be quickly positioned, and the installation member 121 and the seat top block 4 can be connected more firmly and stably.

[0024] Please refer to again Figure 3 , a mounting seat 130 is fixed on the base 2, a limiting groove 131 is opened in the mounting seat 130, and the lower end of the eccentric block 3 is located in the limiting groove 131. The side wall of the limiting groove 131 can support the eccentric block 3, so that the whole mechanism is more balanced in force and more stable in structure.

[0025] Combined with the above and Figure 3 and Figure 5, the adjustment process of the seat 100 with an adjustable seat board will be described in detail as follows:

[0026] In the normal state, the pin 7 is located on the first engaging position 41, and the seat board 1 is in a horizontal state. When it is necessary to adjust the seat board 1 to a forward-tilt state, manually operate the handle 8 to make the eccentric block 3 swing towards the front side of the seat board 1 around the second pivot axis 6. At this time, the pin 7 disengages from the first engaging position 41 and slides along the chute 43, and finally slides to and engages with the second engaging position 42. During the swinging process of the eccentric block 3, the seat board 1 rotates around the first pivot axis 5 and is adjusted from the horizontal state to the forward-tilt state. When it is necessary to return the seat board 1 to the normal state, only need to operate the handle 8 again to make the pin 7 on the eccentric block 3 slide back from the second engaging position 42 to the first engaging position 41.

[0027] Compared with the prior art, since the present invention pivotally connects the seat board 1 to the base 2, pivotally connects one end of the eccentric block 3 to the base 2, and provides at least two engaging positions on the seat top block 4, so that the other end of the eccentric block 3 engages within any one of the engaging positions, thereby forming a stable triangular structure among the base 2, the seat board 1 and the eccentric block 3; in addition, by slidably arranging the other end of the eccentric block 3, the pin 7 on the eccentric block 3 can be selectively engaged within different engaging positions, so that the triangular structure formed by the base 2, the seat board 1 and the eccentric block 3 can be changed, and further the position of the seat board 1 can be adjusted. Moreover, the connection relationship of the adjustment mechanism composed of the base 2, the seat board 1 and the eccentric block 3 is simple, so the structure is very simple, and only by rotating the eccentric block 3 can it be adjusted, which is very convenient to use.

[0028] The above-disclosed are only the preferred examples of the present invention. Of course, the scope of the rights of the present invention cannot be limited thereby. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A seat with an adjustable seat board, characterized in that: It includes a seat board, a base, an eccentric block and a seat top block. One end of the seat board is pivotally connected to the base through a first pivot shaft. One end of the eccentric block is pivotally connected to the base through a second pivot shaft. The seat top block is fixedly arranged on the lower side of the seat board. At least two engaging positions and a chute communicating with each engaging position are arranged on the side surface of the seat top block. The other end of the eccentric block is slidably arranged on the chute through a pin and can be selectively engaged in any one of the engaging positions. A first engaging position and a second engaging position in front of the first engaging position are arranged on the seat top block. The horizontal height of the first engaging position is higher than that of the second engaging position. A receiving groove is arranged on the inner bottom surface of the seat top block. An elastic sheet is arranged in the receiving groove. The elastic sheet elastically abuts against the pin.

2. The seat with an adjustable seat board according to claim 1, characterized in that: The horizontal height of the highest point of the chute is higher than that of the first engaging position.

3. The seat with an adjustable seat board according to claim 1, characterized in that: The receiving groove is located at the middle position of the inner bottom surface of the seat top block. The outer peripheral contour of the elastic sheet corresponds to the engaging position and the chute.

4. The seat with an adjustable seat board according to claim 1, characterized in that: An installation part is connected to the upper side of the elastic sheet. The installation part is fixedly installed on the upper side of the seat top block.

5. The seat with an adjustable seat board according to claim 4, wherein: The installation part includes two connecting arms and two fixing seats. One end of the two connecting arms fixes one fixing seat. The other end of the two connecting arms fixes the other fixing seat. The two fixing seats are respectively sleeved on the sleeve columns on the upper side surface of the seat top block. And the fixing seat and the sleeve column are fixedly connected by screws.

6. The seat with an adjustable seat board according to claim 1, wherein: An installation seat is fixed on the base. A limiting groove is arranged in the installation seat. The lower end of the eccentric block is located in the limiting groove.

7. The seat with an adjustable seat board according to claim 1, characterized in that: It further includes a handle. The handle is connected to the eccentric block to drive the eccentric block to swing around the second pivot shaft.

8. The seat with an adjustable seat board according to claim 1, characterized in that: It further includes a backrest, a back connecting part and an elastic part. One end of the back connecting part is pivotally connected to the base through the first pivot shaft. The other end of the back connecting part is fixedly connected to the lower end of the backrest. The elastic part is arranged between the back connecting part and the base.

Images