KR200380092Y1 - Locking device - Google Patents

Abstract

The present invention relates to a locking device of an exercise chair, and in particular, a latch having a plurality of locking gears is formed to be movable at a predetermined angle while being formed in a streamlined shape to one side of a shaft gear into which a coupling rod is fitted, so as to face each other at one end of the latch. The first locking portion and the second locking portion are formed to protrude in an arc shape, the operation cam coupled to the axis of the locking lever is configured to rotate on the inner space of the first and second locking portion, and to one end of the operation cam By latching the first and second cam projections that engage the first and second locking portions and allow the latch to lock or unlock, depending on the rotation angle, the latch locks or unlocks even if the user rotates the locking lever a little. The angle of the backrest can be locked, and the overall structure is simple, but the volume is reduced to reduce the size of the exercise chair. Rock, and also relates to a locking device of the chair so as to exercise a further layer improves the reliability of the locking operation according to engagement in a number of the locking gear shaft gear.

Description

Locking device of exercise chair

The present invention relates to the locking device of the exercise chair, and in particular, even if the user rotates the locking lever a little, the latch can lock or unlock the operation so that the angle of the backrest can be locked, and the overall structure is simple but the volume is reduced. The present invention relates to a locking device of an exercise chair that can reduce the size of the chair and further improve the reliability of the locking operation as a plurality of locking gears are engaged with the shaft gears.

At present, there is provided an exercise chair that allows the user to exercise while lifting the back while being supported by the elastic member.

These exercise chairs are equipped with a locking device for adjusting the tilt angle of the backrest,

The conventional locking device is configured to lock by forming a plurality of holes in the plate connected to the backrest, and inserting a separate locking pin in the hole.

However, since the conventional technology has a structure in which the locking pin is inserted into the hole provided in the plate, the overall volume becomes large, so that the product is not expected to be slimmer, and it is difficult for the user to quickly insert the pin into the hole, thereby reducing the reliability of the locking operation. There was a problem.

Accordingly, the present invention for solving the above problems is to form a latch having a plurality of locking gears to be movable at a predetermined angle while being formed in a streamlined form on one side of the shaft gear is fitted with a coupling rod, the first end of the latch to face each other The locking part and the second locking part are formed to protrude in an arc shape, and the operating cam coupled to the axis of the locking lever is configured to rotate on the inner space of the first and second locking parts, and the rotation angle is formed at one end of the operating cam. The first and second cam projections are formed to be latched to the first and second latching portions so that the latch can be locked or unlocked so that the latch can be locked or unlocked even if the user rotates the locking lever a little. The angle of the lock can be locked and the overall structure is simple and the volume is reduced to reduce the size of the exercise chair. And also for the purpose of providing a locking apparatus of the exercise chair to be a layer further improve the reliability of the locking operation according to engagement in a number of the locking gear shaft gear.

The present invention for achieving the above object,

In the exercise chair is coupled to the coupling rod is fitted to the shaft gear, the elastic member for applying elasticity in the direction in which the backrest is erected on one side of the shaft gear,

A plurality of locking gears are coupled to the plate on which the shaft gear is mounted so as to be able to move at a predetermined angle about a hinge axis, the latch formed in a streamline shape to be located at one outer side of the shaft gear, and to engage with the shaft gear on one side of the latch. To form a protrusion,

On the outer end of the operating end of the latch protruding to form a streamline so as to face each other with the first catching portion,

Position the actuating cam coupled to the shaft end of the locking lever in the inner space portion of the first and second catching portions so that the latch is locked or the actuating cam pushes the first or second catching portion according to the rotational direction of the actuating cam. It is characterized in that the unlocking operation.

The actuating cam has a first cam protrusion for pushing the first catching part and a second cam protrusion for pushing the second catching part, which protrude side by side in the shape of a rabbit's ear.

Hereinafter, a preferred embodiment of the present invention with reference to the accompanying drawings, Figures 1 to 5 are as follows.

Reference numeral 1 denotes a body frame, and the seat 2 is seated on the upper surface of the body frame 1, and the backrest 3 is coupled to the back so that the body frame can be folded.

In addition, the lower side of the seat 2 is formed with a foot bar (5) that can be hanged by the user in the front and rear direction, the rear frame 7 formed in the rear portion of the body frame (1) On one side, a locking lever 4 is rotatably inserted to lock the tilt angle of the backrest 3.

As shown in FIG. 3, the shaft gear 9 is mounted on the plate 11 inside the rear frame 7, and one side of the shaft gear 9 has elasticity in a direction in which the backrest 3 stands up. An elastic member 8 to be applied is formed coaxially, and a coupling rod 10 having a predetermined length is fitted to the shaft gear 9 and coupled thereto.

As the lower side of the backrest 3 is coupled to the coupling rod 10, the user uses the elastic force provided by the elastic member 8 to exercise the user while flipping the receiver 3 as shown in FIG. 2. You can do it.

On the other hand, the locking device of the present invention is installed on the plate 11, as shown in Figure 4 is formed by forming a latch 13 to have a shape surrounding one side of the shaft gear (9).

The latch 13 is formed in a streamline shape so as to surround one side of the shaft gear 9, and a plurality of locking gears 14 for selectively engaging the shaft gear 9 are formed at one side thereof. One end of the latch 13 is axially hinged to the hinge shaft 15 so that the latch 13 can flow at a predetermined angle about the hinge shaft 15.

That is, when the locking gear 14 is engaged with the shaft gear 9, the rotation of the shaft gear 9 is suppressed, and the backrest 3 is not locked, and the locking gear 14 is locked. When the gear 14 is disengaged, the shaft gear 9 can be freely rotated so that the backrest 3 can be unfolded.

In addition, the first locking part 17 and the second locking part 18 are formed to protrude from one side of the lower end of the latch 13 so as to face each other, and the first and second locking parts 17 and 18 are described above. In the inner space portion of the operating cam 19 to operate the rotation is positioned.

The actuating cam 19 is coupled to the end of the shaft 6 of the locking lever 4, and at one end of the actuating cam 19, rabbit ears shaped first and second cam protrusions 20 and 21 are provided. Are formed to project side by side.

As shown in FIG. 4, when the user rotates the locking lever 4 clockwise in the drawing, the first cam protrusion 20 is caught by the end of the first catching part 17 and the latch 13 moves to the left in the drawing. So that the locking gear 14 is disengaged from the shaft gear 9,

As shown in FIG. 5, the second cam protrusion 21 is caught by the end of the second locking portion 18 when the user rotates the locking lever 4 counterclockwise in the drawing to move the latch 13 to the right. The locking gear 14 is to be locked while being engaged with the shaft gear (9).

As described above, by protruding the two first and second cam protrusions 20 and 21 into the actuating cam 19, even if the user rotates the locking lever 4 by only 45 degrees, the locking and unlocking is made. Therefore, it is possible to more easily control the locking of the back (3) of the exercise chair.

In addition, since the plurality of locking gears 14 mesh with the shaft gears 9 as the latch 13 moves during the locking operation, the reliability of the locking operation can be further improved.

Meanwhile, a predetermined protrusion 12 protrudes from the plate 11, and a rectangular guide groove 16 for receiving the protrusion 12 is formed at an intermediate portion of the latch 13, so that the latch 13 is formed. ) Is a locking or unlocking operation while moving to the left and right on the drawing within the allowable range of the guide groove 16 and the projection 12, the reference numeral 22, not shown, which supports the latch 13 in the locking direction Represents a return spring.

The present invention configured as described above has a latch formed with a plurality of locking gears so as to be movable at a predetermined angle while being streamlined to one side of the shaft gear into which the coupling rod is inserted, and the first locking portion and the second locking portion to face each other at one end of the latch. Protruding the portion in the shape of an arc, and configured to rotate the operating cam coupled to the axis of the locking lever on the inner space of the first and second locking portions, the first and the second according to the rotation angle at one end of the operating cam 2 The latches lock and unlock to lock the angle of the backrest even if the user rotates the locking lever a little, by protruding the first and second cam projections that engage the latching portion and allow the latch to lock or unlock. The overall structure is simple, but the volume is reduced to reduce the size of the exercise chair, and also multiple locking It can be expected an effect to provide a locking device of the chair movements by the reliability of the locking action so that the layer can be further improved in accordance with the engagement eoga shaft gear.

1 is a perspective view showing a conventional exercise chair.

Figure 2 is a side view showing the operating state of the conventional exercise chair.

Figure 3 is a view showing a locking device of the exercise chair of the present invention.

Figure 4 is a view showing an unlocked state of the locking device of the present invention.

5 is a view showing a locking state of the locking device of the present invention.

Explanation of symbols for main parts of the drawings

1: body frame, 2: seat,

3: backrest, 4: locking lever,

5: foot bar, 6: shaft,

7: rear frame, 8: elastic member,

9: shaft gear, 10: coupling rod,

11: plate, 12: projection,

13: latch, 14: locking gear,

15: hinge shaft, 16: guide groove,

17: first locking portion, 18: second locking portion,

19: working cam, 20: first cam projection,

21: 2nd cam protrusion,

Claims (2)

A coupling rod 10 into which the backrest 3 is fitted is coupled to the shaft gear 9, and one side of the shaft gear 9 is coupled to an elastic member 8 that exerts elasticity in a direction in which the backrest 3 stands. In the exercise chair, The shaft 13 is coupled to the plate 11 to which the latch 13 is formed in a streamline so as to be located at one side of the shaft gear 9 so as to be able to move at a predetermined angle about the hinge shaft 15. Protruding a plurality of locking gears (14) for engaging the shaft gear (9) on one side of the latch (13), On the outer side of the operating end of the latch 13 is formed to protrude in a streamline so as to face the first locking portion 17 and the second locking portion 18, Rotational direction of the actuating cam 19 by positioning the actuating cam 19 coupled to the end of the shaft 6 of the locking lever 4 in the inner space of the first and second catching portions 17 and 18. The locking device of the exercise chair, characterized in that the latch (13) to lock or unlock operation while the operating cam (19) pushes the first or second locking portion (17, 18). The second cam protrusion (21) of claim 1, wherein the actuating cam (19) has a first cam protrusion (20) for pushing the first locking portion (17) and a second cam protrusion (21) for pushing the second locking portion (18). The locking device of the exercise chair, characterized in that formed side by side protruding in the shape of a rabbit.