JPS5914836Y2 - knob device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a knob device.

In conventional knob devices, the method of attaching the knob body to the knob shaft with a screw has been widely used.

In recent years, knob devices have been proposed in which the knob body can be attached to the knob shaft with a single touch in order to reduce costs and save labor.

By the way, in this one-touch method, once the knob body is attached, it is necessary to fix it with screws in order to maintain (lock) the knob body in that state.

The present invention has been made in view of the above-mentioned current situation, and aims to provide a knob device in which the knob body can be attached to the knob shaft with a single touch and can be locked extremely easily.

Next, the present invention will be explained with reference to the drawings, which are one embodiment.

In the figure, reference numeral 1 designates a knob shaft having a concave groove 2 as an engaging portion at its tip, 3 a case having an opening 4, and 5 a knob body made of synthetic resin.

The knob main body 5 has a cylindrical portion 6 in the center, and two elastic locking claws 7 having claw portions 8 are protruded from each other so as to be inclined inward in a free state. It is.

Furthermore, an engaging piece 9 is provided protruding from the cylindrical portion 6 to fit into and engage with the groove 2 of the knob shaft 1.

11 is a pointer, and 15 is a scale plate.

Reference numeral 12 denotes a bush that fits into the cylindrical portion 6 of the knob body 5, and has a cut groove 13 at the tip for positioning the retaining piece 9. By fitting into the cylindrical portion 6, the locking claw 7 The opening 4 of the case 3 is pressed against the opening 4 of the case 3 after being expanded outward.

Next, a method of mounting the knob main body 5 having the above structure will be explained.

First, insert the engaging piece 9 of the knob body 5 into the groove 2 of the knob shaft 1.
The locking claw 7 is elastically deformed while being engaged with the case 3.
The case 3 is pressed against the opening 4 through the cylindrical portion 6 until the side wall 10 comes into contact with the case 3.

At this time, the claw portion 8 is located at the inner peripheral edge of the opening 4 of the case 3, and the knob body 5 is attached to the case 3 while being prevented from being removed.

In this state, the knob body 5 is rotatable, so the knob shaft 1 is adjusted by rotating the knob body 5.

When the knob shaft 1 is rotated and adjusted as described above, when the bush 12 is inserted into the cylindrical portion 6 of the knob body 5,
The projecting piece 14 pushes the locking pawl 7 outward, positions the pawl 8 on the inner surface of the case 3, and presses the locking pawl 7 against the edge of the opening 4, so that the knob body 5 is pushed against the case 3. The setting state of the knob shaft 1 is maintained and locked.

Note that the number of locking claws 7 may be three, and it goes without saying that the opening 4 and the outside of the locking claws 7 may be provided with irregularities.

As is clear from the above explanation, according to the present invention, the knob body can be attached with one touch, and the state can be locked extremely easily by inserting the bushing into the cylindrical part after setting the knob shaft. be able to.

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[Brief explanation of drawings]

Fig. 1 is a plan view of the knob body of the knob device of the present invention, Fig. 2 is a sectional view taken along the line II-II of Fig. 1, Fig. 3 is a front view of the bushing, and Fig. 4 is a plan view of Fig. 3. , FIG. 5 is a sectional view of the knob body inserted into the case, and FIG. 6 is a sectional view of the knob body in the locked state. 1... Knob shaft, 2... Engaging portion, 3...
...Case, 4...Opening, 5...
・Knob body, 6...Cylinder part, 7...Latching claw, 8...Claw part, 9...Engagement piece, 1
2...Butshu.

Claims (1)

[Scope of utility model registration request] In a knob device in which the knob body is inserted through an opening provided in the case and engaged with the knob shaft, the knob body is attached to the case opening. A knob body is provided with an elastic locking pawl that engages with the inner wall and a retaining piece that engages with the engaging portion of the knob shaft, and a knob body that is inserted into the cylindrical portion by expanding the G3 upward locking pawl. A knob device consisting of a bushing that crimps and fixes the case to the case.