JPS64122Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a headrest vertical movement device for a hairdressing chair, and more particularly to a mechanism for locking and releasing the vertical movement of the headrest.

Conventionally, in a hairdressing chair, a vertically moving rod having a head rest is provided with locking holes or locking grooves in several steps above and below, the vertically moving rod is fitted into a backrest, and a button fitting is attached to the back of the backrest. installation,
A type is known in which the vertical movement lever can be freely lowered by operating the button of this button fitting, and the headrest can be raised against a spring mechanism regardless of the button operation, but in this type, the headrest is raised. At the same time, noise was generated which was undesirable and caused discomfort to customers, and the button metal fittings were exposed on the backrest, which seriously spoiled the aesthetic appearance.

This idea was created by focusing on the points mentioned above.
In other words, the present invention does not generate unpleasant sounds when moving the headrest up and down, and also allows the headrest to be easily adjusted with one hand, while also being able to firmly maintain that position. The object of the present invention is to provide a headrest vertical movement device for a hairdressing chair, and another object is to provide a headrest vertical movement device for a hairdressing chair that is simple and can provide a pleasant feeling.

Next, an embodiment of the present invention capable of achieving the above object will be described in detail with reference to the accompanying drawings.

1 indicates backrest, 2 indicates headrest,
A recessed step 11 is formed at the upper center of the backrest 1, and a guide frame 3 is mounted inside the backrest 1 in communication with the recessed step 11. Also, the front plate 31 constituting the guide frame 3 has numerous locking holes 31a.
are perforated vertically at desired intervals.

The headrest 2 consists of a frame part 21 having a recessed part 21a on the back surface and a cushion part 22 attached to the frame part 21, and a vertically movable frame 4 is fixed to the lower part of the frame part 21. Also, a through hole 41a is bored in the front plate 41 constituting the vertically movable frame 4, and the vertically movable frame 4 is fitted to the above-mentioned guide frame 3 so as to be vertically movable.

Reference numeral 5 indicates a lever having an operation plate portion 51 at the upper part and a protrusion 52 at the lower part which passes through the above-mentioned through hole 41a and fits into and leaves the locking hole 31a,
The operating plate portion 51 is inserted into the vertically movable frame 4 in a state where it is located in the concave portion 21a constituting the head rest 2 described above, and is rotatably provided in the vertically movable frame 4 by a shaft 6 halfway. Further, a coil spring 7 is stretched between the lever 5 and the front plate 41 of the vertically movable frame 4 at the upper part of the shaft 6.

In the above configuration, the vertical movement frame 4 has a through hole 41a.
The desired vertical movement position is firmly maintained by the protrusion 52 of the lever 5 which passes through the guide frame 3 and is fitted into the locking hole 31a of the guide frame 3. (Note: Due to the elastic force of the coil spring 7.) Then, hold the operating plate portion 51 of the lever 5 and move the operating plate portion 51 to the headrest 2.
By pressing into the recessed part 21a on the back side of the
The lever 5 rotates in the direction of the arrow with the shaft 6 as a fulcrum against the coil spring 7, and this rotation causes the projection 52 to rotate.
is removed from the locking hole 31a. If the operation plate section 51 is pulled up or pushed down in this detached state, the vertical movement frame 4 to which the lever 5 is pivoted moves up and down, and the headrest 2 fixed to the vertical movement frame 4 moves up and down. , determine its height and then release the operating plate portion 51 of the lever 5, so that the protrusion 52 passes through the through hole 41a and fits into the desired locking hole 31a, and the above-mentioned vertical movement position is achieved. It is something that is retained.

Although one embodiment of the present invention has been described above, the recessed step 11 may not be formed in the backrest 1, and the locking hole 31a may be formed in the side plate of the guide frame 3. The stopper hole 31a may be a groove, and the coil spring 7 may be a leaf spring.

As described above, the present invention has a protrusion that engages with a locking hole (or groove) formed in the guide frame at the lower end of the lever rotatably pivoted to the vertically movable frame. Since the upper end of the lever is located in the recess formed on the back of the head rest, it can be manufactured at low cost with very few components and there is less risk of failure. Because of this, it has a good appearance, is easy to operate, and can be adjusted in height with one hand.

[Brief explanation of the drawing]

The drawings show an embodiment of the device according to the present invention, with FIG. 1 being a rear view and FIG. 2 being a cross-sectional view taken along the line shown above. 1...Back crest, 2...Head crest, 3
... Guide frame, 31a ... Locking hole, 4 ... Vertical movement frame, 41a ... Through hole, 5 ... Lever, 51 ...
Operation plate section, 52... protrusion, 6... shaft, 7... coil spring.

Claims (1)

[Scope of utility model registration request] A guide frame having numerous locking holes (or grooves) in the vertical direction is installed inside the backrest, and a vertical movement frame having a headrest at the top and a through hole at the bottom is fitted into this guide frame. Further, the lever has an operation plate part located in a recess formed on the back surface of the headrest at the upper part, and a protrusion at the lower part which penetrates the through hole and fits into the locking hole (or groove). The midway portion is rotatably pivoted to the vertically movable frame, and an elastic member is provided between the vertically movable frame and the upper part of the pivot point of the lever to urge the protrusion toward the locking hole (or groove) side. A headrest vertical movement device for a hairdressing chair.