KR101765158B1 - The anti-rotation device for chair - Google Patents

Abstract

The present invention relates to a rotation prevention means for a chair. The rotation prevention means for a chair stops and releases a rod of a chair cylinder, and comprises: a first assembly having a space therein and including a hinge unit formed on one end thereof and a coupling unit on the other end thereof; a second assembly having a space corresponding to the space of the first assembly and including a hinge unit and a coupling unit corresponding to the hinge unit and the coupling unit of the first assembly; a tight pressing member tightly coupled to the space of each assembly; and a pressing means installed on the coupling unit of each assembly. Accordingly, the present invention tightly installs the rotation prevention means on an outer circumferential surface of the rod and the cylinder to allow a sitting person to easily hold a handle and stop and release rotation of a seat. If an infant or a child sits on a seat unit of the chair, rotation of the seat can be stopped to prevent an accident where the infant and the child fall.

Description

The anti-rotation device for chair < RTI ID = 0.0 >

More particularly, the present invention relates to a chair rotation preventing means, which is provided on the outer circumferential surface of a chair chamber and a rod, which allows a seated person to easily press the knob to stop and release the chair cylinder rod, The present invention relates to a chair rotation prevention device capable of preventing a fall safety accident by unintentional rotation of a seat plate when an infant or a child is sitting on the chair seat.

Generally speaking, a chair is a chair that has the function of turning the chair in the desired direction by rotating only the chair seat in a sitting position.

The rotating chair can be moved to the center of the body while sitting on a chair. This allows the user to enjoy the food while enjoying a light conversation with the other person when drinking or drinking in a place such as a bar. .

The structure of the rotating chair will be briefly described.

And a leg for supporting the seating portion. The cylinder is connected between the seating portion and the leg portion, and is rotatably provided, so that the body can be rotated while the person is sitting.

However, such a rotating chair easily rotates even if a small force is applied, so that a risk of a safety accident may occur.

In particular, when an infant or a child who lacks cognitive ability to an object touches the rotating chair when the child is far away from the caregiver's gaze, the backrest and the seat rotate and can strike the similar body. When sitting on the seat, There is a risk that the vehicle may fall while being rotated arbitrarily

Registered utility model 20-0243563 "Rotating chair"

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the related art by providing a rotation preventing means for stopping and releasing a cylinder rod portion of a rotating rotary chair even if a small force acts, Which is caused by the rotation of the chair upper seat plate by stopping and releasing the seat backrest.

In order to achieve the above object,

A chair rotation preventing means for stopping and releasing a load of a chair cylinder,

A first coupling member having a hollow portion formed inside and having a hinge portion formed at one end and a coupling portion at the other end; and a hollow portion corresponding to the space portion of the first coupling member, wherein a hinge portion of the first coupling member, And a pressing means provided on a coupling portion of each of the coupling bodies. The hinge portion and the coupling portion are formed to correspond to each other, .

In addition, the space portion of the first combination body may further include a first space portion and a second space portion, and the space portion of the second combination body may further include a third space portion and a fourth space portion.

In addition, the first space part and the third space part are formed to be smaller than the second space part and the fourth space part.

In addition, the contact and pressing member includes a pair of bodies respectively coupled to the space portions of the coupling bodies, and a plurality of concave and convex portions formed by the inner surfaces of the pair of bodies.

In addition, a pair of bodies corresponding to the first space part, the third space part, the second space part and the fourth space part are mutually formed and tightly coupled.

Further, in the case where the tightly pressing member is provided in the space portion of each coupling body, a plurality of coupling projections are formed on the outer surface of the tightly pressing member, and the fixing portions are formed on one surface of each space portion corresponding to the coupling projections, And are fixed to each other.

The pressing means includes a handle having a pressing portion formed at one end thereof, a support shaft rotatably mounted on the handle pressing portion, a pressing ring provided on the outer peripheral surface of the supporting shaft, and a closing member coupled to the supporting shaft end portion .

As described above, according to the present invention, the rotation preventing means is closely attached to the outer circumferential surface of the cylinder and the rod, so that the seated person can hold the handle and can easily stop and release the rotation of the seat. At the same time, In this case, it is possible to prevent a safety accident that the infant and child are injured by stopping the rotation of the seat.

1 is a side view showing a general structure of a general chair;
2 is an exploded perspective view showing the chair rotation preventing means according to the present invention;
3 is a perspective view showing a process of installing the pressing means of the chair rotation preventing means according to the present invention.
4 is a sectional view showing the internal structure of the chair rotation preventing means according to the present invention.
5 is an action diagram showing the action of the chair rotation preventing means according to the present invention;
6 is an action diagram showing that the chair rotation preventing means according to the present invention is closely attached to a cylinder and a rod.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

A chair rotation preventing means for stopping and releasing a rod (3) provided on a seat portion with respect to a cylinder (2) provided on a leg portion of a chair,

A first coupling member 10 having a hollow portion 11 formed inside and having a hinge portion 12 formed at one end and a coupling portion 13 at the other end; The hinge portion 22 and the engaging portion 23 formed to correspond to the hinge portion 12 and the engaging portion 13 of the first coupling body 10 A tight fitting member 30 tightly fitted to the space portions 11 and 21 of the first and second assemblies 20 and 20 of the first and second assemblies 10 and 20, And pressurizing means (40) provided at the engaging portions (13) (23) of the main body. Reference numeral 4, which is not shown in the drawing, is a backrest, and reference numeral 5 is a leg.

Hereinafter, the constituent elements and operations of the present invention will be described in more detail as follows.

The rotation preventing means of the present invention largely comprises a first coupling member 10, a second coupling member 20, a contact pressing member 30, and a pressing means 40.

As shown in Figs. 2 to 4,

The hinge portion 12 is formed at one end of the first coupling body 10 so as to be rotatable with the hinge portion 22 of the second coupling body 20, And the other end of the cylinder 2 is formed with the engaging portion 13 having the engaging hole and is pressed and released by the engaging portion 23 of the second engaging body 20 by the pressing means 40, The first space portion 11 and the second space portion 11 are formed in a multistage shape so as to closely cover the outer circumferential surface of the cylinder 2 and the outer circumferential surface of the rod 3, A plurality of groove-like or through-hole-like fixing portions 11-1 are formed on the outer surfaces of the respective space portions 11a and 11b, A coupling protrusion 34 formed on a body 31 of the body 30 is inserted and fixed so that the body 31 and the first coupling body 10 are mutually fixed.

The second coupling member 20 is bent in a semicircular shape so as to correspond to the first coupling member 10 so as to form a shape close to a circle inwardly and the hinge portion 12 and the second coupling member 14 of the first coupling member 10, The hinge part 22 and the coupling part 23 are formed symmetrically with the coupling part 13 and the space part 21 is formed on the inner side and the first space part 21 A third space 21a and a fourth space 21b are formed at positions corresponding to the first space 11a and the second space 11b and the outer surfaces of the spaces 21a, And the engaging projection 34 formed on the body 32 of the urging and pressing member 30 is inserted and fixed so that the body 32 and the second coupling body 20 are mutually fixed.

The contact and pressing member 30 is made of a rubber material and has a pair of bodies 31 and 32 which are in close contact with the space portions 11 and 21 of the first and second assemblies 20 and 20 A plurality of concave and convex portions 33 are formed in a circular arrangement on the inner surface of each of the bodies 31 and 32, and a plurality of concave and convex portions 33 are formed in the upper portion, The fourth space 21b and the third space 21a and the second space 11b and the fourth space 21b with a size corresponding to each other, A plurality of coupling protrusions 34 inserted into the fixing portions 11-1 and 21-1 formed in the coupling portions 20 and 20 are formed so that the respective bodies 31 and 32 are fitted to the coupling portions 10 The contact and pressing member 30 has a plurality of recessed and projected portions 33 on the inner circumferential surface and a plurality of engagement protrusions 34 formed on the outer circumferential surface thereof It may have one body.

The pressing means 40 tightly engages the engaging portions 13 and 23 of each of the assemblies 10 and 20 in such a manner as to narrow or widen the space therebetween so as to be in close contact with the outer circumferential surface of the cylinder 2 and the rod 3. [ And functions to stop and release the rotation of the rod 3 by pressing and pressing the concave and convex portions 33 of the pressing member 30. The structure of the rod 3 includes a handle 41 having a pressing portion 41a formed at one end thereof A supporting shaft 42 mounted on the pressing portion 41a of the handle 41 in a hinge manner and a pressing ring 43 provided on the outer circumferential surface of the supporting shaft 42; And a closing member 44 provided at an end of the supporting shaft 42 to prevent the supporting shaft 42 from separating after penetrating the coupling hole of the engaging portions 13 and 23. The other pressing means 40, bolt and nut tightening may be used.

Hereinafter, the operation of the present invention will be described.

As shown in Figs. 4 to 6,

First, when the seat occupant presses the knob 41 to prevent rotation of the seat after the seat is appropriately formed using the elevation controller and then seated,

The pressing portion 41a of the handle 41 presses the support shaft 42 and narrows the space between the engaging portions 13 and 23 of each of the engaging bodies 10 and 20. As a result, The concave and convex portions 33 of the pair of bodies 31 and 32 of the tightly pressing member 30 simultaneously and strongly press against the outer circumferential surface of the cylinder 2 and the rod 3, The rotation of the motor is stopped.

On the contrary, when it is desired to rotate the seat occupant's seat,

When the handle 41 that has been pressurized is restored,

A pair of bodies 31 and 32 which are in close contact with the outer circumferential surface of the cylinder 2 and the rod 3 as well as the space between the engaging portions 13 and 23 of the respective assemblies 10 and 20, 33 are released and the seat can be rotated again.

That is, the present invention has a first coupling body 10 and a second coupling body 20 having hinged portions 12 and 22 at one end and coupling portions 13 and 23 at the other end, respectively, The present invention provides a structure in which a pressing means 40 is provided on engaging portions 13 and 23 of the hinge portions 12 and 22 so as to rotate and rotate with respect to the hinge axis of the hinge portions 12 and 22, A tightly pressing member 30 having a pair of bodies 31 and 32 on the inner surface of which the concave and convex portions 33 are formed is provided inside each of the combined bodies 10 and 20 so that each of the combined bodies 10 The body 31 and the body 32 of the body 31 and 32 are tightly fixed to the space 11 and 21 and then the concave and convex portions 33 of the bodies 31 and 32 are pressed by using the pressing means 40, The seated person can easily hold the handle 41 to stop and release the rotation of the seat by stopping the rotation of the rod 3 by pressing the cylinder 2 and the rod 3 in close contact with each other, When sitting on the chair seat plate, the rotation of the seat plate is stopped It provides a great advantage to prevent infant and child falls Accidents.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined by the appended claims and their equivalents. It will be understood by those of ordinary skill in the art that various changes and modifications may be made without departing from the scope of the present invention.

1: Seat
2: Cylinder
3: Load
4: Backrest
5: Leg
10, 20: a first coupling member, a second coupling member
11, 21:
11a, 11b, 21a, 21b: a first space portion, a second space portion, a third space portion,
11-1, 21-1:
12.22: Hinge section
13,
30:
31, 32: a pair of bodies
33: concave and convex portion
34:
40: pressing means
41: Handle
42: Support shaft
43: Pressurizing ring
44: Closing member

Claims (7)

A first coupling part (11) formed inside and having a hinge part (12) formed at one end and a coupling part (13) at the other end for stopping and releasing the rod (3) of the chair cylinder (2) A space portion 21 is formed so as to correspond to the space portion 11 of the first coupling body 10 and the hinge portion 12 and the coupling portion 13 of the first coupling body 10 A second coupling body 20 further including a hinge portion 22 and a coupling portion 23 which are formed so as to correspond to each other and a second coupling body 20 which is in tight contact with the space portions 11 and 21 of the coupling bodies 10 and 20, In the chair rotation preventing means provided with the pressing member (30)
The space portion 11 of the first coupling body 10 includes a first space portion 11a and a second space portion 11b and the space portion 21 of the second coupling body 20 includes a third space Wherein the first space part 11a and the third space part 21a are smaller than the second space part 11b and the fourth space part 21b, And a pair of bodies 31 and 32 are formed so as to correspond to the first space part 11a and the third space part 21a, the second space part 11b and the fourth space part 21b, Are formed in multiple stages and are tightly coupled,
The urging and pressing member 30 includes a pair of bodies 31 and 32 coupled to the space portions 11 and 21 of the respective coupling bodies 10 and 20, And a plurality of projections and depressions 33 formed on the inner surface of the base member 32. The contact and pressing member 30 has a plurality of coupling projections 34 formed on the outer surface thereof to correspond to the coupling projections 34 The fixing portions 11-1 and 21-1 formed on one side of the space portions 11 and 21 formed in the respective coupling bodies 10 and 20 and the coupling projections 34 are fixed to each other. Means for preventing chair rotation.


















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