JPS6023621A - Holding device - Google Patents

Abstract

PURPOSE:To both obtain smooth rotation of a roller and improve its workability, by providing a housing, which forms a groove fitting the end part of a bar shaped member, and a resilient retaining member, which can be forced to be intruded along the groove, in a size larger than the width of the groove. CONSTITUTION:A retaining member 10 consisting of a leaf spring in a size larger than a groove 4 of a housing 3 is press fitted, resiliently holding a bearing 2. The member 10 provides in its both ends recessed parts 10a, 10b into which internal walls of the groove 4 of the housing are fitted. The retaining member 10, if it is forced to be intruded into the groove 4 by fixed force, is resiliently deformed due to its size larger than a width of the groove 4, and repulsive force is generated in a downward direction of the bearing 2 and a lateral direction of the groove 4, thus fixing the bearing 2 while preventing the retaining member 10 from falling off. It is preferable for the housing 3 to use a material such as resin, aluminum, etc. softer than that of the retaining member 10.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a holding device for holding an end portion of a rod-shaped member, such as a shaft of a rotating body or a bearing thereof.

(Prior Art) Conventionally, mechanisms as shown in FIGS. 11, 12, and 13 have been known as mechanisms for fixing and holding the ends of rod-shaped members (hereinafter described as bearings).

First, in Fig. 11, 1 is a shaft, and a bearing 2 is placed on the outside of the shaft.
are mated. The bearing 2 is fitted into the groove 4 of the housing 3, and the bearing 2 is sandwiched by fixing the fixing member 5 to the upper surface of the housing 3 with screws 6 so as to close the opening of the groove 4. FIG. 12 further shows a bearing pressing protrusion 5a on the lower surface of this fixing member 5.
It has been established. Further, in the mechanism shown in FIG. 13, a groove 5al for bearing fitting is formed in the fixing member 5, and the fixing member 5 itself can be fitted from the upper end of the housing 3 and fixed from the side with screws.

In the conventional example shown in FIGS. 11 and 12, a gap is created between the fixing member 5 and the bearing 2 due to variations in component accuracy such as the height of the fixing member 5 and the depth of the groove 4 of the housing 3. This may cause backlash in the vertical direction, or conversely, the fixing member 5 may push the bearing 2 too much, resulting in deformation of the bearing and an increase in rotational load.

In addition to these drawbacks, the case shown in FIG. 13 also has the drawbacks of poor workability and difficulty in automation because the fastening direction is horizontal.

(Purpose) The present invention has been made in view of the drawbacks of the conventional examples described above, and it is possible to improve low
It is an object of the present invention to provide a mechanism in which a bearing can be fixed so that a rotating body such as a rotor can rotate smoothly, and which can be operated from one direction without using a connecting member.

(composition) The configuration of the present invention will be explained below based on the illustrated embodiments.

Note that the same parts as in the conventional example are given the same reference numerals.

FIG. 1(a) is a simplified front view of the main part showing the paper conveying section of the photographing machine, and FIG. 1(a) is a side view thereof.

In the figure, 7 is a guide plate, 8 is a roller, and drive is transmitted by a gear 9. The shaft 1 of the roller 8 is fitted into a bearing 2, and this bearing 2 is held in a housing 3.

Reference numeral 10 denotes a pressing member which will be described later. The paper is conveyed by rollers 8 along guide plate 7.

FIG. 2 is an exploded side view of this bearing holder, in which a holding member lO made of a plate spring having a width larger than the groove 4 of the housing 3 moves in and out of this groove 4, and the bearing 2? ! : It is designed to be held elastically. FIG. 3 is an external view of this holding member 10, in which recesses 10a and 10b are formed at both ends into which the inner walls of the groove 4 of the housing 3 fit.

FIG. 4 shows this presser member 10'f: press-fitted from the upper end opening of the groove 4, and thick arrows indicate the state of force distribution.

Since the width of the presser member 10 is larger than the width of the groove 4, if the presser member 10 is pushed into @4 with a constant force, it will be elastically deformed, and a repulsive force will be generated in the downward direction of the bearing 2 and in the horizontal direction of the groove 4. The bearing 2 is fixed and the pressing member 10 is prevented from falling off. In this case, the housing 3 may be made of a material that is softer than the pressing member (elastic member), such as resin or aluminum.

Fig. 5 shows a holding member 10 made of resin into the shape shown, but in this case, it is necessary to form a retaining part in the groove 4 to prevent it from falling.

The bearing 2 is not limited to a circular cross section; it may have opposing parallel surfaces as shown in FIG. 6, or it may have a rectangular shape as shown in FIG. 7. In such a case, the groove 4 may have a shape that matches the shape of the bearing.

Although FIGS. 2 to 4 show the shape of the presser member 10 and the state of engagement with the groove 4 according to the first embodiment, FIGS. 8 and 9 show other embodiments. show.

The holding member IO shown in FIG. 8 has the same bending shape as the first embodiment, but instead of the recesses 10a and 10b, protrusions 10c and 10d are formed at the center of both sides [as shown in the same figure]], and the groove 4 is It is press-fitted into the slotted part [Figure (a)]
]. The holding member i0 shown in FIG. 9 has a flat rectangular parallelepiped shape as shown in FIG. 9(b), or has recesses 10a, 101) formed therein as shown in FIG. 9(C).

As mentioned above, the member to be held need not be the bearing 2, but may be a rod-like member 11 having a rod-like longitudinal direction as shown in FIG.

If the rotational speed is low, it is not necessarily necessary to provide a bearing.

(Effects) The present invention is as described above, and according to the present invention, it is possible to hold the end portion of the rod-shaped portion under optimal conditions without increasing the precision of the parts of the housing more than necessary. In addition, since it can be fixed and held with only one part (a holding part such as a leaf spring) without using any connecting parts (for example, screws), the assembly process is simplified and automation becomes easier.

[Brief explanation of drawings]

Figure 1 shows the conveyance section of the temporary copying machine; (a) is a front view; (a) is a front view;
b) is a side view, FIG. 2 is an exploded front view of the device according to the first embodiment of the present invention, FIG. 3 is an external view of the main parts, FIG. 4 is a view showing the same holding state, and FIG. Figures 6 and 7 are front views of devices according to other embodiments, Figures 8 and 9 are views of still further embodiments, and Figure 8(a) is a front view of the device. Figure 9(b) is an external view of the sleeve part, Figure 9(a) is a front view,
(bJ, (e) is an external view of the wall part, Fig. 10 is an external view showing how a general rod-shaped member is held, and Figs. 11, 12, and 13 are front views showing different conventional examples. Yes. 3...Housing, 4...Groove, 10.
... Pressing member, 11 ... Rod-shaped member. 1'5 Figure 65E1 27 Figure 7q Figure 711 Figure 12 Figure 18

Claims (1)

[Claims] A device for holding one end of a rod-shaped member having a longitudinal direction, the housing forming a groove into which the end of the rod-shaped member is fitted, and capable of being pushed along the groove from the open end of the groove. . A holding device comprising a holding member that is larger than the width of the groove and has elasticity.