JPH0650549U - Swivel chair with footrest - Google Patents

Abstract

(57) [Summary] [Purpose] In the past, the seat height could be adjusted by considering only the sitting height of the seated person, whereas the below-knee length changes in a similar manner depending on the physique of the seated person. Focusing on that, in a swivel chair whose height can be adjusted with respect to the legs, when adjusting the height of the seat according to the size of the seated person from adults to children, The point is to provide a swivel chair with a footrest that can be used by selecting a footrest suitable for the height. [Structure] A swivel chair in which a height of a seat portion 2 is adjustable with respect to a leg portion 1, and a foot rest 3 having foot rests 15 having different heights is fixed to appropriate positions of the leg portions. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a swivel chair with a footrest applicable to seated persons having different physiques from adults to children.

[0002]

[Prior art]

 Conventional chairs for school children have already been provided with a structure that allows the height of the seat to be adjusted with respect to the legs and the height of the footrest plate attached to the legs. However, this type of school chair has a non-rotating seat.

On the other hand, a typical swivel chair has a structure in which the height of the seat can be adjusted with respect to the legs by using a gas cylinder or the like so that it can be applied to various physiques of seated persons. Are generally offered. However, it is common for the legs to have no footrest.

By the way, as for a rotary chair for a special purpose such as drafter drafting which requires an extremely high seat portion, there is a chair having a footrest on the legs. For example, as shown in FIG. 7, a seat c is rotatably and height-adjustably attached to a support shaft b of a leg a, and a ring-shaped footrest d is mounted at a predetermined height position of the support shaft b. It is a swivel chair for designers with a horizontally fixed structure.

However, the purpose of the footrest shown in the above example is that the seat part needs to be extremely high according to the height of the drafter, and therefore the seated person's foot floats from the floor surface. is there. Even if the footrest with this structure is applied to a swivel chair that is normally used, it does not become a swivel chair with a footrest that can be applied to all seated people of different sizes from adults to children. That is, the height of the desk top is standardized to be approximately constant, while the physique of a person is similar, and the sitting height and the length under the knee are different, so that the height of the sitting portion is suitable for working on the desk. This is because, when is set according to the seat height, the distance between the seat and the foot rest changes only by the height adjustment of the seat, so that it is often not possible to adapt to the length below the knee.

[0006]

[Problems to be solved by the device]

 In view of the above-mentioned situation, the present invention is to solve the problem that the height of the seat can be adjusted in consideration of only the seat height of the seated person. Focusing on the fact that the length also changes in a similar manner, in a swivel chair whose height can be adjusted with respect to the legs, when the height of the seat is adjusted according to the physical constitution of the seated person, The point is to provide a swivel chair with a footrest that can be used by selecting a footrest suitable for the height of the seat.

[0007]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention is a swivel chair in which the height of the seat can be adjusted with respect to the leg, and the footrest has footrests of different heights in appropriate places of the leg. We constructed a swivel chair with a footrest.

[0008]

[Action]

 In the swivel chair with a footrest according to the present invention having the above contents, the height of the seat portion is set according to the seat height so as to be suitable for office work, and the seat portion is opposed to the legs. Rotate the footrest to select an appropriate height for the footrest, and adjust the distance between the seat and the footrest to match the knee length of the seated person.

[0009]

【Example】

 The present invention will be further described in detail with reference to the embodiments shown in the accompanying drawings. 1 and 2 show a typical embodiment of a swivel chair with a footrest according to the present invention, in which a seat 2 is rotatably and height-adjustably attached to a leg 1, and the foot 1 is placed at a proper position. The mounting table 3 is fixed.

The leg portion 1 is provided with casters 5, ... At the tips of a plurality of radially extending supporting legs 4, ..., And a supporting shaft 6 is erected at the center of the supporting legs 4 ,. The support shaft 6 has a normal structure in which a gas cylinder 7 that is expandable and contractible and rotatable is partially installed in an upwardly protruding state. In this embodiment, the upper part of the support shaft 6 and the gas cylinder 7 are covered with a bellows 8 which can expand and contract.

The seat portion 2 has a mounting body 10 for receiving the lower surface of the seat plate 9 rotatably or rotatably mounted on an upper end portion of the gas cylinder 7, and a backrest rod 11, from both rear portions of the seat plate 9, It has a normal structure in which 11 is erected and a backrest plate 12 is attached to the upper part thereof. In this embodiment, the seat plate 9 can move forward against the elastic biasing force, and the backrest rod 11 can tilt rearward against the elastic biasing force.

In this embodiment, the footrest 3 has a circular ring rod 13 arranged in an inclined state around the support shaft 6 and a plurality of support rods 14 extending radially from the support shaft 6. It is supported and fixed by. That is, the plane formed by the ring rod 13 and the axis of the support shaft 6 have a predetermined inclination angle which is not 90 degrees. Therefore, a portion having a high height from the floor and a portion having a low height from the floor surface are continuously formed along the ring rod 13, and the ring rod 13 forms the footrest portions 15 having different heights. Here, particularly, the lower part of the footrest 15 will be referred to as the lower footrest 15a, and the higher part will be referred to as the higher footrest 15b. Although the ring rod 13 has a simple circular shape in this embodiment, it has at least a low footrest portion 15a and a high footrest portion 15b, and has a multistage stage having a footrest portion at an intermediate height. It is also possible to form it.

Here, when an adult having a normal physique is used, when the height of the seat plate 9 is adjusted by operating the gas cylinder 7 as in a normal swivel chair, the person sits on the seat plate 9. With the legs resting on the floor, the knees are bent at about 90 degrees to provide a comfortable sitting posture. Achieving such a seated state is not the subject of the present invention.

Therefore, according to the swivel chair with a footrest of the present invention, when it is used by a small adult or a child in the upper grades of elementary school, as shown in FIG. Adjust the height of the board 9 to set the height H ₁ of the seat 9 so that it is easy to work on a table whose height is standardized, for example, a desk with a height of 70 cm, and When the seat portion 2 is rotated relative to the leg portion 1 and the low foot rest portion 15a of the foot rest 3 is positioned on the front side of the desk, the foot is hung on the seat plate 9 and the foot is in the air. It is placed on the low foot rest 15a without floating, and the knee is bent at about 90 degrees to provide a comfortable sitting condition. At this time, the distance between the seat plate 9 and the low foot rest 15a is h ₁ .

When a child of a lower grade of elementary school who has a smaller physique is used, the height of the seat plate 9 from the floor is adjusted as shown in FIG. The height H ₂ of the seat plate 9 is set so that the work can be performed easily, and the seat portion 2 is rotated relative to the leg portion 1 so that the high foot rest portion 15b of the foot rest 3 is raised. When it is located on the front side of the desk, the feet are not floating in the air while seated on the seat plate 9 and are placed on the high foot rests 15b, and the knees are bent at about 90 degrees to provide a comfortable sitting feeling. The distance between the seat plate 9 and the high foot rest 15b at this time is h ₂ .

[0016] Generally, if the physical constitution is different, the seat height changes accordingly, so the optimum height of the seat plate 9 is adjusted based on the seat height. Therefore, the optimal height of the seat plate 9 increases from H ₁ to H ₂ when the physique is reduced, and the distance between the seat plate 9 and the foot rest 15 corresponding to the below-knee length is also narrow from h ₁ to h _2. Become. In other words, it is necessary to make the height change amount of the footrest 15 larger than the height change amount of the seat plate 9 in order to set the seating comfort even for seated persons with different physiques. The footrest 3 of the present invention can be set exactly like this.

As another embodiment, the footrest 3 shown in FIG. 4 is constructed such that the support shaft 6 is fitted into the central hole 17 of the disk-shaped plate 16 and fixed by welding or the like. The upper surface of 16 is used as a footrest portion 15, and the plate body 16 is formed with a low footrest portion 15a and a high footrest portion 15b as described above.

Further, as another embodiment, the footrest 3 shown in FIGS. 5 and 6 has a plurality of fan-shaped plates 18, ... Welded in multiple stages around the support shaft 6 at different heights. And the like, and the upper surface of the plate 18 is used as the footrest portion 15. In this embodiment, the middle footrest portion 15a is placed between the lowest footrest portion 15a and the highest footrest portion 15b. The parts 15c and 15d are provided. The plate members 18, ... May be connected to each other by vertical plates or the like so as to have strength.

[0019]

[Effect of device]

 The swivel chair with a footrest according to the present invention as described above is a swivel chair in which the height of the seat can be adjusted with respect to the legs, and the footrests having different heights are placed at appropriate places of the legs. Since the foot rest is fixed, when used by seated persons with different physiques from adults to children, when the height of the seat is set according to the seat height to suit the work on the desk, the seat Rotate the footrest relative to the legs to select the footrest with an appropriate height for the footrest, and adjust the distance between the seat and footrest to the knee length of the seated person to ensure a comfortable sitting position. A good sitting condition can be achieved.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing a typical embodiment of a swivel chair with a footrest according to the present invention.

FIG. 2 is a side view of the swivel chair set in a state where the user sits down by using a low footrest.

FIG. 3 is a side view of the swivel chair that is also set to sit down using the high footrest.

FIG. 4 is a side view of an essential part showing a partial cross-section of another embodiment of the footrest.

FIG. 5 is a side view of an essential part showing still another embodiment of the footrest.

FIG. 6 is a cross-sectional plan view of the main part of the same.

FIG. 7 is an overall perspective view showing a conventional swivel chair.

[Explanation of symbols]

 1 leg part 2 seat part 3 foot rest 4 support leg 5 caster 6 support shaft 7 gas cylinder 8 bellows 9 seat plate 10 mounting body 11 backrest rod 12 backrest plate 13 ring rod 14 support rod 15 foot rest 15a low footrest Part 15b high foot rest part 16 plate body 17 center hole 18 plate body

Claims (1)

[Scope of utility model registration request] 1. A swivel chair having a height adjustable seat portion with respect to a leg portion, wherein a footrest having footrest portions having different heights is fixed in place on the leg portion. A characteristic swivel chair with a footrest.