JPH0126672Y2 - - Google Patents

Description

[Detailed explanation of the idea] (b) Industrial application fields The present invention relates to a locking device for fixing a rotating part.

(B) Prior Art In a facsimile device, in order to exchange recording paper, a recording paper storage section 1 is rotatably mounted on a shaft 2 as shown in FIGS. 1 to 3, and side plates 3, 3
The recording paper storage section 1 is fixed by engaging the engagement step portions 6 of the locking fittings 5, 5 with the locking pins 4, 4 provided in the recording paper storage section 1. By the way, in a facsimile device, precision is required to perform high-density recording, and even in the recording paper storage section 1, the left and right locking fittings 5, 5 that fix the recording paper storage section 1 are in a locked state. If this misalignment occurs, the recording paper 7 will move from a predetermined position, causing problems such as meandering in the running of the recording paper. Therefore, conventionally, as shown in FIG.
At the same time, a square projection 14 is formed at the tip of the connecting shaft 10 into which a square hole 13 formed in the locking metal fitting 5 is fitted, and the locking metal fitting 5 is connected with a screw 15. It is configured to be fixed to the shaft 10.

However, this method has the problem that it is difficult to cut corners so that the square protrusions 14 at both ends of the connecting shaft 10 coincide with each other, resulting in an increase in cost if the precision is to be improved.

(c) Purpose of the invention The present invention was made to solve the above-mentioned problems, and provides a locking device that can easily improve accuracy and can be constructed at a low cost.

(d) Structure of the invention The present invention uses a square rod as the connecting shaft to which the locking metal fitting is fixed, the part of the square rod that contacts the side wall of the recording paper storage section is machined into a circular shape, and the locking metal fitting is attached to the square rod. It is configured so that the square holes of the two are fitted and fixed.

(e) Embodiments Examples of the present invention will be described below with reference to FIGS. 5 to 7. In the present invention, a square rod is used for the connecting shaft 16, and a square hole 1 is formed in the side wall 17 through which the connecting shaft 16 passes.
8 is formed, and the portion of the connecting shaft 16 that contacts the square hole 18 is cut into a circular shape as shown in FIG. 6a, and as shown in FIG. It is designed to prevent it from coming off. Reference numeral 19 denotes a locking fitting having a square hole 20 into which the square rod connecting shaft 16 is fitted, and a screw hole 21;
After fitting the square hole 20 into the connecting shaft 16, the connecting shaft 16 is fixed by tightening a screw 22 into a screw hole 23 formed in the connecting shaft 16, as shown in FIG. Although not shown, a spring acts on the locking metal fitting 19 to apply a clockwise rotational force to the locking metal fitting 19. Therefore, if the locking metal fitting 19 is rotated counterclockwise against the bias of the spring, it will be disengaged from the locking pin 4 and the recording paper storage section 1 will be rotated.

(F) Effects of the invention As mentioned above, the locking device of the present invention has the connecting shaft that fixes the locking metal fittings made of a square bar, so that both ends of the connecting shaft can be easily made into the same shape, and the locking device of the present invention can easily have the same shape. The mounting accuracy of the fastener can be easily increased. Also, by configuring only the rotating part of the connecting shaft to be circular, there is no need for a retaining ring like in the past, and the number of parts can be reduced and assembly can be facilitated, which is a great practical effect.

[Brief explanation of drawings]

Figure 1 is a front view showing a conventional example of a locking device, Figure 2 is a front view showing a conventional example of a locking device;
The figure shows the operating state of Fig. 1, Fig. 3 is a plan view of Fig. 1, and Fig. 4 is a perspective view showing the main parts of Fig. 1.
FIG. 5 is a perspective view showing the main parts of the locking device of the present invention;
FIG. 6 is a cross-sectional view of the main part of the connecting shaft, and FIG. 7 is a plan view showing the assembled state of FIG. 5. DESCRIPTION OF SYMBOLS 1... Recording paper storage part, 3... Side plate, 4... Locking pin, 16... Connection shaft, 17... Side wall, 19...
Locking metal fittings.

Claims (1)

[Scope of utility model registration request] In a locking device for fixing a rotatable recording paper storage section of a facsimile device, a connecting shaft made of a square rod penetrates a square hole formed in a side wall of the recording paper storage section; It consists of a square hole that fits into the shaft, and a locking metal fitting that is fixed to both ends of the connecting shaft, which has a square hole that fits into the shaft and a locking step that engages with the locking pin on the side plate of the device. A locking device characterized in that a contacting part is formed in a circular shape.