JPH0418613Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a ball hammer for a pachinko machine.

Conventionally, as shown in FIG. 1, a short rod 2 is provided protruding in a direction perpendicular to the tip of a ball striking mallet body 1, and the base of a cylindrical coil spring 3 is press-fitted and fixed to the outer periphery of the short rod 2.
A ball hitting mallet for a pachinko machine in which a shaft portion 4a of a ball hitting element 4 made of an elastic material such as rubber or synthetic resin is press-fitted and fixed to a coil spring 3 is known.

As shown in FIG. 2, there is also a ball mallet for a pachinko machine in which a threaded rod 6 is provided protruding from the tip of the ball mallet body 5 in a direction perpendicular to the tip, and a cap 7 made of an elastic material is screwed into the mallet tip 6 to firmly fix it. is publicly known. Coil springs and caps wear out in a short period of time, so they need to be replaced with new ones from time to time.However, since both are press-fitted onto the tip of a mallet, they require force and are troublesome to replace. Ta.

Furthermore, as shown in Japanese Utility Model Publication No. 40-34022, a mounting part formed integrally with the hammer is provided at the tip of the ball batting mallet,
There is a known structure in which a hole is provided in the mounting part, and the elongated part of the rod to which the spring is fixed is fitted and fixed into the hole in the mounting part, thereby making it possible to replace the insect rod at the tip of the mallet. The drilling process causes misalignment and is difficult to adjust, and requires high accuracy in the processing technology, making it unsuitable for mass production.

In addition, as shown in Japanese Utility Model Application Publication No. 53-23374, in a pachinko machine in which a mounting hole is provided in the batting mallet body, a short rod to which a spring is fixed is fitted, and is integrally fixed to the batting mallet body with a bolt. Although the spring mounting structure of a batting mallet is well known, drilling a hole in such an irregularly shaped batting mallet body tends to cause misalignment.
In addition, in order to align the center of the hammer tip and the ball, it is necessary to provide a fitting allowance so that the hammer tip can be moved back and forth and left and right, and the fixation of the mallet tip relies only on thin bolts, which prevent loosening during repeated operations. However, there was a problem in that it was not suitable for practical use.

The purpose of this invention is to solve the above-mentioned problems.The present invention is made by integrally forming a threaded rod by die-casting or the like in a direction perpendicular to the center of the batted ball at the tip of the batting mallet body, and attaching a nut to the outer periphery of the nut screwed onto the threaded rod. The base of the coil spring is fitted and fixed to the base of the coil spring.

FIGS. 3 and 4 show an embodiment of the present invention. 1
Reference numeral 0 denotes a ball hammer main body, with a threaded rod 11 protruding from its tip in a direction perpendicular to it, and a nut 1 screwed onto the threaded rod 11.
A base portion of a coil spring 13 having a tip whose diameter gradually becomes smaller is fitted and fixed on the outer periphery of the coil spring 2.

According to the present invention, the threaded rod part can be mass-produced with high precision by pressing or die-casting in the direction perpendicular to the position of the tip of the ball striking mallet body that matches the center of the batted ball, and the drilling work can be easily performed. Instead, a thread is formed on the threaded rod portion and a nut is screwed into the base of the coil spring, thereby making it easier to catch the center of the ball.

Note that the shape of the coil spring can be changed in various ways.

[Brief explanation of the drawing]

FIG. 1 is a cutaway front view of main parts of a conventional first comparative example;
FIG. 2 is a front view of a second conventional comparative example, FIG. 3 is a cutaway front view of essential parts of an embodiment of the present invention, and FIG. 4 is an exploded front view of FIG. 3. 10... Ball hammer body, 11... Threaded rod, 12...
...Natsuto, 13...Coil spring.

Claims (1)

[Scope of utility model registration request] A batting ball for a pachinko machine in which a threaded rod is integrally formed by die-casting or the like in a direction perpendicular to a position that matches the center of the ball at the tip of the batting mallet body, and the base of a coil spring is fitted and fixed to the outer periphery of a nut screwed onto the threaded rod. Hammer.