JPH0111089Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a chair with a seat that can be adjusted in height and fixed angle.

Conventional chairs with a seat that can be raised or lowered freely can move up and down with respect to an inclined base plate, and can be fixed at any height. The fixed angle was constant at all heights.

However, since the center of gravity is different depending on the height of the seat relative to the base body, the center of gravity is different depending on the height of the seat. Improvements were needed.

The purpose of this invention is to improve the conventional chair in order to eliminate the above-mentioned drawbacks, and to provide a chair with a seat part that can be raised or lowered to provide a stable sitting position.

That is, this invention consists of a base body 2 in which a gap 1 is formed in the vertical direction, a rear leg 3 attached to an appropriate position on the back surface of this base body 2, and a leg 3 that penetrates the gap 1 from the front surface to the back surface and is movable up and down. A guide rod 4, a seat 5 fixed to the guide rod 4, and each of the pair is glued to the front and back surfaces of the base 2 in order to fix the seat 5 to the base 2 at an arbitrary height. In a chair in which the seat is made up of a pair of stoppers 6, 6' that can be raised or lowered, the guide rod 4 is provided with at least three holes 7 so that the stoppers 6, 6' can be inserted into arbitrary positions. This relates to a chair with a seat that can be raised or lowered.

The structure of this invention will be described in detail with reference to the drawings. Figure 1 is an exploded perspective view of the chair of this invention, the state in which the seat is attached is indicated by broken lines, and Figure 2 is a side view showing an example of the angle of the seat. .

The base body 2 consists of three plates or rectangular metal tubes that are horizontally connected by a connecting rod 8, and a metal ring 9 is provided at each adjacent portion to form two gaps 1 that extend in the vertical direction. are doing. Since the rear legs 3 that can rotate to maintain the open leg state at a constant angle are attached to the back of the base body 2, the portion of the base body 2 below this attachment position acts as the front legs.

The seat portion 5 passes through each of the gap portions 1 and is fixed to a pair of metal guide rods 4, 4 which are vertically movable. One end of the pair of guide rods 4, 4 protruding from the seat portion 5, that is, the portion passing through the gap portions 1, 1, is bent upward, and the tip thereof is connected to the base body 2.
The back side is out. A pair of stoppers 6, 6' penetrate horizontally through the tips of the pair of guide rods 4, 4 and the adjacent portions of the seat 5. The pair of stoppers 6, 6' are covered with elastic synthetic rubber and can be brought into close contact with the front and back surfaces of the base 2 in use.The guide rods 4, 4 have locking projections 10. , 10 are provided, and when the seat part 5 is inverted and placed along the base body 2, the protrusions 10, 10 are press-fitted into the gaps 1, 1 to prevent the seat part 5 from falling automatically.

To explain in detail the structure of the improved points of this invention,
As shown in FIG. 2, the guide rod 4 is provided with two or more holes 7 in the part extending to the back side of the base body 2 through which the stoppers 6' that come into contact with the back side of the base body are passed.
Alternatively, a communication hole is provided through which the stopper 6' can be inserted to prevent it from moving to another hole. Stopper 6'
can be inserted into the pair of guide rods by selecting an appropriate hole, but since the inclination angle of the base body is constant during use, the fixed angle of the seat relative to the base body is determined by the insertion position of the stopper 6' in the guide rods. is different. In addition, two or more holes should be provided in the guide rod between the seat and the base so that the stopper 6 that should be in contact with the surface side of the base can select the hole in the same way as above, or a communicating hole similar to the above. It is also possible to provide (not shown).

This invention consists of the above-mentioned structure, and the operation and effect will be explained next.

As shown in FIG. 1, when the rear legs 3 are in an open state, the base body 2 is tilted, and the stoppers 6, 6' are in contact with the front and back surfaces of this base body, as well as in the upper and lower positions, so that the seat part 5 is prevented from descending. It's long and the seat 5
When the user sits down, the stoppers 6, 6' press the base in different directions in close contact with each other, and therefore do not descend. To move the seat 5, the seat 5 is lifted in the direction of the arrow shown in FIG. 1, thereby releasing the stoppers 6, 6' and allowing the seat 5 to move up and down freely.

As mentioned above, this chair is extremely practical as it has two effects in one chair: the height of the seat can be set freely and the seat can be folded. This makes it possible to select the fixed angle of the seat relative to the base, which was not possible in the past, and this point will be discussed next.

When the seat is in a low position, the center of gravity is low, so the state of sitting on the seat is stable. Therefore, there is no problem in terms of stability whether the seat is at a fixed angle with the seat tilted backwards or horizontally, and the seat can be selected according to the user's preference. For example, if a horizontal state is desired, the position of the stopper 6' may be changed to the position shown by the chain line. In addition, when the seat is in a high position, the center of gravity is high and the sitting position tends to be unstable, especially when the seat is tilted backwards. By changing this, a relatively stable sitting position can be obtained.

In other words, this design allows for stable sitting at any height of the seat, and also allows the fixed angle of the seat to be set according to preference when the seat is in a low position. . Therefore, a chair with a seat that can be set to any height position provides a stable seat and allows you to select a fixed angle for the seat, so until now it was simply possible to adjust the height of the seat. It has more functionality than a regular chair, and allows you to sit in a stable position.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of the chair of the present invention, and FIG. 2 is a side view showing an example of changing the angle of the seat. 1... Gap portion, 2... Base body, 3... Hind leg, 4...
...Guide rod, 5... Seat, 6, 6'... Stopper,
7...hole.

Claims (1)

[Scope of utility model registration request] A base body with a gap formed in the vertical direction, a rear leg attached to an appropriate position on the back side of the base body, a guide rod that penetrates the gap from the front side to the back side and is movable up and down, and is fixed to the guide rod. and a pair of stoppers each of which can be adhered to the front and back surfaces of the base to fix the seat at an arbitrary height to the base. and a chair having a seat part which can be raised or lowered, and the guide rod has at least three or more holes so that the stopper can be inserted into any desired position.