JPS6227905Y2 - - Google Patents

Description

[Detailed explanation of the idea] This invention concerns a metronome.

With conventional metronomes, the oscillator may come off the hook during reminders, damaging the front cover or damaging the oscillating instrument. They used objects to secure the furizao, or fixed metal fasteners to the front lid. This resulted in disadvantages such as the need for extra members, resulting in high costs and time-consuming work.

This invention provides a metronome that is simple in construction, does not require any extra members, is easy to manufacture and assemble, and can be safely delivered.

An embodiment of this invention will be described with reference to the drawings. Reference numeral 1 denotes a case body in which a metronome mechanical part 2 is housed, a scale plate 4 is fixed to the front of the case plate 3 with screws 5, etc., and a swing diode 6 is placed in an upright position in front of the case plate 3. It stands out. A hook 7 for holding the upper end of the swinging rod 6 protrudes forward from the case plate 3. The hook 7 is formed with a fitting groove 7a opening downward and a swing receiving groove 7b recessed on the back surface. The front cover 8 is attached to the case main body 1 so as to cover the scale plate 4 and the swing ring 6 with a gap. Three protrusions 9, 10a and 10b are protruded from the inner surface of the front lid 8 at positions substantially opposite to the hook 7. The protrusion 9 is press-fitted into the fitting groove 7a, and functions to position the front cover 8 in the left-right direction and prevent it from slipping off. The protrusions 10a and 10b face each other with the swinging saw 6 in between, and their tips extend to a position close to the scale plate 4, thereby preventing the swinging thread 6 from slipping out of the swinging thread receiving groove 7b. It is working.

With the above configuration, when sending the metronome, after fitting the swinging ring 6 into the swinging ring receiving groove 7b from the back of the hook 7, attaching the front cover 8 to the case body 1, The projection 9 is press-fitted into the fitting groove 7a, and the front cover is stably held in the correct position in the left-right direction. At the same time, protrusions 10a and 10b
are opposed to each other with the swinging thread 6 inside, and their tips are located close to the scale plate 4, so even if the swinging thread 6 tries to dislodge from the swinging thread receiving groove 7b due to an external impact force, the protrusion will not move. Since it is blocked by 10a or 10b, it will not come off. Further, when in use, the swinging chisel 6 can freely escape from the swinging thread receiving groove 7b by simply removing the front cover 8.

As described above, this invention has a simple structure with only three protrusions integrally provided on the front lid, and the swinging zao can be held stably without any extra members required. It has excellent practical effects, such as no damage during shipping, easy manufacturing and assembly, and low cost.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a longitudinal cross-sectional view, FIG. 2 is an inner view of the front cover, and FIG. 3 is a cross-sectional view taken along the line shown in FIG. 1. 3... Case plate, 6... Swinging tether, 7... Hook, 7a... Fitting transmission groove, 7b... Swinging twill receiving groove, 8
...Front lid, 9...Protrusion, 10a, 10b...Protrusion.

Claims (1)

[Scope of Claim for Utility Model Registration] A hook having a hook for holding the upper end of the swing hook and a fitting groove for holding the upper end of the swing hook is protrudingly provided on the case plate,
The front cover, which is detachable from the case plate, has a protrusion that can be fitted into the fitting groove, and a protrusion that is positioned to sandwich the furizao and can prevent the furizao from escaping from the furizao receiving groove. A metronome characterized by a protruding part.