JPS6234012Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a support structure for a shaft of a counter or the like.

Conventionally, methods for supporting this type of shaft include caulking a claw protruding from the periphery of the shaft hole, pressing and fixing the end portion of the shaft with a spring member, or fixing it with a washer. Various methods are known, but they require further work to stop the shaft after the shaft has been inserted into the shaft hole, so they cannot be called easy. For example, in the conventional technique disclosed in Japanese Utility Model Application Publication No. 52-15640, the pawl is first engaged with the circumferential groove of the support shaft,
Then, the troublesome work of locking the hook in the bearing locking portion was required.

The present invention was developed in view of the above points, and provides a shaft support structure that is easy to install and ensures reliable support of the shaft by using a support member that can be fitted into the shaft hole. The purpose is to

An embodiment of the present invention will be described below based on the accompanying drawings.

In the figure, 1 is a U-shaped frame body, and a pair of side plates 2, 2 are disposed opposite to each other. 3, 3 is a shaft hole formed in the upper center of the side plates 2, 2, and the holes 3, 3 are connected to the opening 4,
4 and open upwards.

5 is a well-known counter with a plurality of number wheels 7 on an axis 6.
is rotatably mounted, and the rotation of the main drive gear 8 is transmitted from the lowest numbered wheel to the higher numbered wheels in order.

Reference numeral 9 denotes a support member according to the present invention, which has a disk-shaped substrate 10. A circular recess 11 serving as a bearing portion is bored in the center of one side of the substrate 10. Reference numeral 12 denotes an annular wall provided from the peripheral edge of the recess 11 via a step 13. Reference numeral 14 denotes elastic fitting portions projecting from the upper surface of the annular wall 12 at appropriate intervals, and a tapered portion 15 is formed on the outer surface of the distal end of the elastic fitting portion 14 . Reference numeral 16 denotes a fitting groove, which connects the base end surface of the tapered portion 15 and the substrate 10.
is formed on the outer surface of the elastic fitting part 14 by one side surface of the elastic fitting part 14.

A guide block 17 stands up from the upper surface of the substrate 10 and the annular groove 12, and can be inserted into the opening 4.

With the above configuration, in order to fit the support member 9 into the shaft hole 3, the elastic fitting part 14 is pushed into the shaft hole 3, and the tapered part 15 comes into contact with the shaft hole 3 surface as shown in FIG. Upon contact, the elastic fitting part 14 is pressed inward and displaced, but the height of the tapered part 15 is formed so as not to collide with the outer circumferential surface of the shaft 6 even at the maximum displacement, so that the elastic fitting part 14 passes through the shaft hole 3 as it is, and the tapered portion 15 reaches the inner surface of the side plate 2. Then, the tapered portion 15 returns outward due to its elasticity and returns to its original shape, but in this state, as shown in FIG.
It fits into the edge 2a facing the shaft hole 3 of. At the same time, if the shaft 6 is positioned as shown in FIG.
is fitted into the bearing recess 11, resulting in the state shown in FIG.

The guide block 17 serves as a guide when the support member 9 is inserted into the shaft hole 3, and also serves to prevent rotation and falling off after fitting.

When actually installing the shaft 6, the support member 9 may be fitted to one side plate 2 in the same manner, or the end of the shaft 6 may be fitted with a diameter as shown in FIG. A small shaft portion 6a may be formed and supported in the shaft hole 3a with a small diameter.While one end of the shaft 6 is supported in this manner, the other end may be supported in the shaft hole 3a with a small diameter. As shown in FIGS. 3 and 4, the shaft 6 can be supported by simply inserting it. Since the shaft 6 is simply fitted into and supported by the bearing recess 11, there is no need to process the shaft 6 by creating a groove or the like.

In the above embodiment, since the shaft hole 3 has the opening 4, the guide block 17 is formed in the support member 9, but if the shaft hole 3 is a simple round hole shape without the opening 4, the guide block 17 is formed in the support member 9. It goes without saying that block 17 is unnecessary.

In addition, although an example is shown in which three elastic fitting parts 14 are provided, there is no limit to the number of elastic fitting parts 14, and even one piece can be used as long as the fitting action can be performed, but two or more pieces can be used. preferable. Furthermore, the elastic fitting part 1
Of course, it is also possible to make 4 wider or narrower.

The annular wall 12 is for obtaining a stable fitting state when the support member 9 is fitted into the shaft hole 3.
Even if the annular wall 12 is not formed and the elastic fitting portion 14 is provided directly protruding from the substrate 10, the effects of the present invention can be achieved.

In the embodiment described above, the stepped portion 13 is provided in order to prevent the distal end of the elastic fitting portion 14 from colliding with the shaft 6 even if the elastic fitting portion 14 is displaced when the support member 9 is fitted into the shaft hole 3. Although shown, other configurations may be used to perform the functions described above. For example, as shown in FIG. 7, the elastic fitting portion 14 is provided directly protruding from the peripheral edge of the bearing recess 11 without providing a stepped portion, while a wide annular groove 18 is provided at the end of the shaft 6. This makes it possible to prevent the tip end of the elastic fitting part 14 from colliding with the shaft 6 even when the elastic fitting part 14 is maximally displaced inward. Furthermore, in the case of the embodiment shown in FIG. 7, it is also possible to directly protrude the elastic fitting part 14 from the peripheral edge of the flat bearing part without forming the bearing part into the recess 11. In addition, when compared with the conventional technique described in the above-mentioned Japanese Utility Model Publication No. 52-15640, the mechanism of the present invention is simpler than the conventional technique. The support member 9 of the present invention can be operated with a single touch, but in the case of conventional technology, the cumbersome operation of locking the circumferential groove with the claw portion and locking the hook piece with the bearing locking portion is required. is necessary. In the present invention, it is not essential to provide a special shape to the shaft 6 and the shaft hole 3 of the side plate 2, but in the conventional technology, the support shaft (shaft 6 of the present invention) is provided with a circumferential groove and the frame (the shaft hole 3 of the present invention) is provided with a circumferential groove. It is essential to provide the bearing locking portion 15 in the through hole of the side plate 2) of the invention (the shaft hole 3 of the invention), which has the disadvantage of requiring more time and effort to manufacture.

As described above, the present invention is a support structure for a shaft of a counter, etc., in which a support member having a substrate with an elastic fitting portion projecting therein is fitted into a shaft hole to support the shaft. Simply fit the component into the shaft hole,
It has the practical effect of being extremely easy to install with one touch, and also ensuring reliable support of the shaft.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the frame, FIG. 2 is a perspective view of the counter, FIG. 3 is a perspective view of the support member of the present invention, and FIG.
The figure is an explanatory diagram of the operation while the support member is fitted into the shaft hole, FIG. 5 is an explanatory diagram after the support member is fitted into the shaft hole, and FIG.
The figure is an explanatory diagram showing an example of shaft support, and FIG. 7 is an explanatory diagram of another embodiment. 1: Frame, 3: Shaft hole, 5: Counter, 6: Shaft,
9: Supporting member, 11: Bearing recessed portion, 14: Elastic fitting portion, 15: Tapered portion.

Claims (1)

[Scope of utility model registration request] In a shaft support structure for supporting a shaft of a counter, etc., which is attached to a pair of opposing side plates of a U-shaped frame through shaft holes, the substrate is located on the outer surface of the side plates; a bearing recess provided on one side surface for receiving the tip portion of the shaft; an elastic fitting portion protruding near or on the peripheral edge of the bearing recess; and an elastic fitting portion formed on the outer surface of the tip of the elastic fitting portion. forming a support member having a tapered portion and a fitting groove formed on an outer surface of the elastic fitting portion by a base end surface of the tapered portion and one side of the substrate; When the fitting part is fitted, the tapered part reaches the inner surface of the side plate without collision between the outer peripheral surface of the shaft and the elastic fitting part, and the fitting groove reaches the edge facing the shaft hole of the side plate. A shaft support structure in which the shaft is fitted into the bearing part and is supported by the bearing part.