JPH08196375A - Chair - Google Patents

Abstract

PURPOSE: To easily maintain a posture suitable for the operation of installed equipment such as a PACHINKO machine without any need of tolerating a sitting pain. CONSTITUTION: This chair has a leg body 46, a bed member 55 fixed to the upper end thereof, a saddle member 52 mounted on the bed member 55 in such a state as freely slidable in a back and forth direction, a return spring for resetting forward a saddle body 52 laid on the saddle member 52, and a seat body 16 fastened to the upper surface of the saddle member 52.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixed type chair whose legs are fixed to the floor, which is mainly installed and used in stores such as pachinko parlors and snacks.

[0002]

2. Description of the Related Art Conventionally known chairs of this type have their legs standing immovably on the floor due to the space in the store and the positional relationship with equipment such as a pachinko machine. It is fixed so that it does not move at the top. For this reason, there is a problem that particularly tall and young people have to put up with sitting pains and devise their own posture suitable for operation of equipment such as a pachinko machine.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a new chair that solves the above problems.

[0004]

In order to achieve the above object, a chair according to the present invention comprises a leg 46, a bed member 55 fixed to the upper end of the leg 46, and a front and rear sliding direction on the bed member 55. It is provided with a saddle member 52 movably attached, return springs 67 and 68 mounted on the saddle member 52 and returning the member 52 to the front, and a seat body 16 fixed on the saddle member 52.

[0005]

Since the present invention has the above-described structure, when the seated person moves his / her body backward while seated, the seat body 16 and the saddle member 52 are returned by the return spring by the moving force of the body. The return springs 67, 68 are moved when the user leaves the seat by moving backwards or the like against the acting force of the 67, 68.
The seat body 16 and the saddle member 52 are automatically returned to the front end by the action force.

[0006]

According to the chair of the present invention, as described in the above operation, when the seated person moves his / her body forward and backward while seated, the seat body 16 also freely follows back and forth together. Therefore, a tall person or a young person can easily secure a position suitable for operation of an installed device such as a pachinko machine without enduring sitting.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment shown in the drawings, a pedestal pipe 3 which is erected on a floor surface 1 with screws 2 is constructed, and a thrust bearing 5 is provided in an upper end portion of the pedestal pipe 3 with a C-shaped stop ring 4.
Also, the seats 6 of the gas cylinder device 9 to be described later are respectively fixed in the lower ends of the pedestal pipes 3, and when the self-resetting push pins 7 are opened in the pedestal pipes 3, the upper ends 8 thereof are opened. Is inserted upward by a built-in spring (not shown) and pushed down to the upper end 8 of the same, and is lowered by the external force when the external force is applied to the gas cylinder device 9 and the upper end 8 of the cylinder device 9 is inserted into the thrust. The lower end 11 of the cylinder device 9 is fixed to the seat 6 so as not to be vertically movable and rotatably in a state of protruding upward through the inner diameter hole 10 of the bearing 5, and the vertical operation pipe is provided outside the cylinder device 9. The shaft 12 is slidably attached in the vertical direction along the outer circumference of the cylinder device 9, and the upper end portion 13 of the vertical operation pipe shaft 12 is attached to the upper end portion 8 of the cylinder device 9 by the spring pin 1. Fixed integrally with a, so that further mounting the seat body 16 to be described later to the male tapered extension 15 to the upper end extends above the upper end plane 13 of the vertical operating pipe shaft 12.

A fixed bush 19 having a diameter of the inner diameter hole 18 larger than that of the vertical working pipe shaft 12 is fitted around the vertical working pipe shaft 12 in the pedestal pipe 3, and the fixed bush 19 is fitted. In the pedestal pipe 3, a movable-side bush 21 is fixed to the seat 6 via a short tubular auxiliary member 20 so as not to be rotatable and vertically movable, and a movable bush 21 is provided above the fixed-side bush 19 around the vertical operation pipe shaft 12 at a position above the fixed-side bush 19. Are rotatably and vertically movable, and the spline teeth 2 are attached to the inner peripheral surface of the movable bush 21.
2 are also provided with spline grooves 23 on the outer peripheral surface of the upper and lower operation pipe shafts 12, and these spline teeth 22 and spline grooves 23 are fitted to each other.
9, the low and high places 24 and 25 and the inclined surface 26,
Upward cam 28 consisting of 27 and low and high places 29, 30
And an outer upward cam 33 composed of inclined surfaces 31 and 32, the lower portion 24 of the inner upward cam 28 is set to the lower portion 29 of the outer upward cam 33, and the upper portion 25 of the inner upward cam 28 is set to the upper portion of the outer upward cam 33. At the same height as the location 30, and the inclined surfaces 26, 27 of the inner upward cam 28 are opposite to the inclined surfaces 31, 32 of the outer upward cam 33, and the low / high places 34 are formed on the lower end edge surface of the movable bush 21. 35 is provided with an inner downward cam 38 composed of 35 and inclined surfaces 36 and 37, and an outer downward cam 43 composed of low / high places 39 and 40 and inclined surfaces 41 and 42.
4 and the lower part 39 of the outer downward cam 43 and the higher part 35 of the inner downward cam 38 are at the same height as the higher part 40 of the outer downward cam 43, and the inclined surface 3 of the inner downward cam 38 is
6 and 37 are opposite to the inclined surfaces 41 and 42 of the outer downward cam 43, and a coil spring 45 for pressing the movable bush 21 is interposed between the upper surface of the movable bush 21 and the thrust bearing 5. The leg 46 is configured.

The inside upward cam 28, the downward cam 38, the outside upward cam 33, and the outside downward cam 43.
The lower part 34 of the inner downward cam 38 is the inner upward cam 2
The height 35 of the inner downward cam 38 is in the low portion 24 of the inner upward cam 28, and the height 39 of the outer downward cam 43 is in the height 30 of the outer upward cam 32 when in contact with the height 25 of 8.
Further, when the high point 40 of the outer downward cam 43 is in contact with the low point 29 of the outer upward cam 33, and the high point 35 of the inner downward cam 38 is in contact with the inclined surfaces 26, 27 of the inner upward cam 28, the downward downward movement is performed. The height 40 of the cam 43 is fixed to the inclined surfaces 31 and 32 of the outer upward cam 33 by the inner upward cam 2.
The height 25 of 8 is the inclined surface 36, 37 of the inner downward cam 38.
Further, the height 30 of the outer upward cam 33 is in contact with the inclined surfaces 41 and 42 of the outer downward cam 43, respectively.

A seat body 49 is fixed to the upper surface of a horizontal portion 48 of a frame 47 which is L-shaped when viewed from the side independently of the leg body 46, and a backrest board 51 is fixed to the front surface of a vertical portion 50.
6, a saddle member 52 is fixed to the lower surface of the horizontal portion 48 of the frame 47, and a pair of left and right U-shaped guide groove portions 53, 54 are formed on the lower surface of the saddle member 52 and open inward in the longitudinal direction. The bed member 55 is disposed on the lower surface of the saddle member 52, and the outward protruding edges 56 and 57 are provided on both left and right edges of the bed member 55. Synthetic resin sliding members 58, 5 configured to be slidably fitted in the V-shaped guide groove portions 53, 54.
9 is non-detachably attached, and the attached portions of the sliding members 58, 59 are fitted in the U-shaped guide groove portions 53, 54 to fix the saddle member 52 and the seat body 16 on the bed member 55. The bed member 5 is supported so as to be movable back and forth.
A boss 60 is fixed to the lower surface of the boss 6 at a substantially central position.
The male taper-shaped extension portion 15 is locked in the female taper hole 61 of No. 0 by the engagement concave / convex portions 62, 63 so as to be unrotatable and cannot be removed by tightening a screw (not shown) or the like. Two pairs of front and rear spring hooking holes 65 and 66 are provided at the rear end of 52 and the front end of the bed member 55, and two return springs 67 and 68 that return the saddle member 52 to the front and rear spring hooking holes 65 and 66. The front and rear ends of the saddle member 52 are hooked, and a dogleg shaped leaf spring 70 is arranged on the inner surface of the rear end wall 69 of the saddle member 52, and an intermediate portion thereof is fixed to the wall 69 by a rivet 71. Both ends 72 and 73 are brought into contact with the left and right sides of the rear end of the bed member 55 to muffle the collision sound.

Further, a horizontal shaft 74 is provided horizontally and rotatably in a portion of the bed member 55 near the front end,
The intermediate point of the lever-shaped operation lever 75 is placed on the horizontal shaft 74 in a state where the inner end 76 of the operation lever 75 is placed on the upper end of the push pin 7 via the slide pin 78 and the outer end 77 of the lever 75 is seated. It is fixed as being positioned below the front left portion of the board 49.

When the user sits on the seat body 16 in the above-mentioned embodiment in the front direction and the user turns to the side while turning while keeping seated, the seat body 16 moves up and down. The pipe shaft 12, the cylinder device 9 and the movable side bush 21 rotate to the same angle (about 90 degrees) as the turning angle of the body, and the inner downward cam 38 and the outer downward cam 43 of the movable side bush 21 and the inner side of the fixed side bush 19 are rotated. The upward cam 28 and the outward upward cam 33 are displaced by the above angle, and the movable side bush 21 is moved upward by this displacement to contract the coil spring 45. When the user stands up after leaving the sideways position and leaves the seat, the movable bush 21 moves downward due to the extension force of the coil spring 45 contracted in the above, and the inner downward cam 38 and the outer downward cam 43 of the movable bush 21 are separated. The displacement of the fixed side bush 19 from the inner upward cam 28 and the outer upward cam 33 is eliminated, and when the movable side bush 21 is rotated when the displacement is eliminated, the cylinder device 9, the vertical operation pipe shaft 12, and the seat body 16 are moved laterally. It will rotate in the opposite direction and will return to the original orientation (frontward).

In the above embodiment, the lower portion 34 of the inner downward cam 38 and the upper portion of the inner upward cam 28, the upper portion 35 of the inner downward cam 38, the lower portion 24 of the inner upward cam 28, and the outer downward cam 43 are arranged. The seat body 16 faces the front at a position where the low point 39 contacts the high point 30 of the outer upward cam 32 and the high point 40 of the outer downward cam 43 contacts the low point 29 of the outer upward cam 33.

Further, when the seated user moves the upper body rearward while still sitting, the seat body 16 and the saddle member 52 are subjected to the acting force of the return springs 67 and 68 by the moving force of the upper body. When the seat body 16 is moved backwards and leaves the seat, the action of the return springs 67 and 68 causes the seat body 16 to move.
And the saddle member 52 is returned to the front end. Incidentally, the strength of the acting force of the return springs 67 and 68 is set to such a magnitude that the seat body 16 and the saddle member 52 are returned when there is no seated person.

When the outer end 77 of the operating lever 75 is pulled up with a finger, the inner end of the operating lever 75 pushes the push pin 7 through the slide pin 78 to open the push lever. When the push pin 7 is open, the seat body 1
When the weight of the seated person and the external force in the pushing-down direction are not applied to 6, the upper end 8 of the cylinder device 9 rises due to the force of the built-in spring of the cylinder device 9 and the seat body 16 rises and is applied. At the same time, the upper end 8 is lowered and lowered. When the raising operation of the operating lever 75 with the fingers is interrupted while the seat body 16 is being raised or lowered, the push pin 7 returns to the closed state and the upper end 8 of the cylinder device 9 is stopped from rising and lowering. The seat body 16 stops at an intermediate height.

That is, the chair according to the above-described embodiment is capable of automatically returning to the front when the occupant disappears, returning to the fixed position in the front, and adjusting the height by operating the lever.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a vertical sectional view showing a state in which a seat body is rotated.

FIG. 4 is a vertical cross-sectional view showing the seat body in a retracted state.

FIG. 5 is an exploded perspective view showing the relationship between the vertical operation pipe axis and the boss.

FIG. 6 is an exploded perspective view showing a relationship between a fixed side bush, a movable side bush, and an auxiliary member.

FIG. 7 is a cross-sectional view of a fixed side bush.

FIG. 8 is a sectional view of a movable bush.

FIG. 9 is an enlarged cross-sectional view showing a mounting portion of the seat body to the leg body.

FIG. 10 is a perspective view showing an assembly of a base member and a saddle member.

FIG. 11 is an exploded perspective view showing the assembly.

[Explanation of symbols]

 1 floor surface 2 screw 3 pedestal pipe 4 C type stop ring 5 thrust bearing 6 seat 7 push pin 8 upper end 9 cylinder device 10 inner diameter hole 11 lower end 12 vertical operation pipe shaft 13 upper end part 14 spring pin 15 extension part 16 seat Body 18 Inner diameter hole 19 Fixed side bush 20 Auxiliary member 21 Movable side bush 22 Spline tooth 23 Spline groove 24, 25 Low / high places 26, 27 Inclined surface 28 Inner upward cam 29, 30 Low / high place 31, 32 Inclined surface 33 Outer upward cam 34, 35 Low / high place 36, 37 Inclined surface 38 Inner downward cam 39, 40 Low / high place 41, 42 Inclined surface 43 Outer downward cam 45 Coil spring 46 Leg 47 Frame 48 Horizontal part 49 Seat base 50 Vertical Part 51 Back board 52 Saddle member 53, 54 Guide groove part 55 Bed member 56, 57 Outward protruding edge 58, 59 Sliding member 60 Boss 61 Female taper hole 62, 63 Engaging concave / convex portion 65, 66 Spring hooking hole 67, 68 Return spring 69 Rear end wall 70 Leaf spring 71 Rivet 72, 73 End portion 74 Horizontal axis 75 Control lever 76 Inner end 77 Outer end 78 Slide pin

Claims (1)

[Claims] 1. A leg 46, a bed member 55 fixed to the upper end of the leg 46, a saddle member 52 mounted on the bed member 55 slidably in the front-rear direction, and a saddle member 52.
A return spring 67 for returning the same member 52 mounted on the
A chair comprising: 68 and a seat body 16 fixed on the saddle member 52.