JPH0437189Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a case body in which a sliding body to which a permanent magnet is attached is elastically biased to be slidable in the axial direction by a spring, and the sliding body is fitted into the case body. This invention relates to a magnetic catcher in which a sliding body is moved in and out by pushing the end portion against the bias of a spring.

BACKGROUND ART Conventionally, as shown in FIGS. 4 to 6, a magnetic catcher of this type has a bulge 32 formed on the outer surface of a side wall of a case body 31, with both ends bent at right angles. One end of the locking pin 33 formed in the shape of a letter is swingably supported, and a through hole is provided in the other side wall of the case body 31 through which a sliding body 34 that slides along the inner wall of the case body can slide in and out in the axial direction. 35 is provided, and a V-shaped guide groove 36 into which the free end of the locking pin 33 can be inserted and transferred is provided in a thick wall portion protruding from the center of the sliding body 34. Locking recesses 37 are formed in the upper and lower parts of the guide groove 36 to temporarily lock the movement of the locking pin 33 when the free end of the locking pin 33 is inserted.
There is a difference in the left and right inclination angles of the V-shape, and when the sliding body 34 moves in and out of the case body, the free end of the locking pin 33 moves only in one direction along the guide groove 36. It's summery.

The spring 38 is fitted between the inner surface of the side wall of the case body 31 and the end face of the sliding body 34, and biases the sliding body 34 so as to be able to freely slide in the axial direction.

An annular locking pin 39 fitted into the bulging portion 32 of the case body prevents the supporting end of the locking pin 33 from being pulled out, and also applies elastic force to the free end of the locking pin through the locking pin 33. and insert the locking pin 33 into the guide groove 36.
The pressure welding transition is made along the A permanent magnet M is attached to the end of the sliding body 34.

In the conventional magnetic catcher configured as described above, when the tip of the slider 34 is pushed against the bias of the spring 38, the free end of the locking pin 33 moves along the guide groove 36, and the guide groove 36 moves. When the end of the locking pin 33 is fitted into the locking recess 37 provided in the upper part of the V-shape of the groove as shown in FIG. 6, the movement of the sliding member 34 is temporarily stopped.

Next, when pushing the recessed tip of the sliding body 34 again, the free end of the locking pin 33 escapes from the locking recess 37 at the top of the V-shaped guide groove, the locking of the sliding body 34 is released, and the sliding body 34 is released. The moving body 34 protrudes from the case body 31 by the spring 38, and the free end of the locking pin 33
When the sliding body 34 is fitted into the locking recess 37 at the bottom of the letter shape as shown in FIG. 5, the sliding body 34 stops protruding from the case body 31.

Problems to be Solved by the Invention In the conventional configuration, the locking pin 39 can prevent the locking pin 33 from being pulled out from the supported shaft hole, but the transmission to the free end of the locking pin 33 can be prevented. The applied pressing force was weak, and the locking pin 33 sometimes came off from the guide groove 36, making it impossible for the sliding body 34 to move.

In addition, since a protruding portion 32 is formed on the case body 31, the locking pin 33 may be damaged by the impact of other objects.
There was a problem in that the support part of the machine was damaged.

Means for Solving the Problems In this invention, as shown in FIGS. 1 to 3 of the embodiment drawings, a locking pin 3 having a U-shape with both ends bent at right angles is inserted into the case body 1. A locking pin 3 is supported swingably by a bearing 2 protruding from the
The supporting end of the spring 8 is made to protrude from the bearing hole of the bearing 2, and the end surface of the spring 8 at the beginning of winding is brought into pressure contact with this projecting end, and the end surface of the spring 8 at the end of the winding is brought into pressure contact with the sliding body 4, so that the sliding body 4 is moved in the axial direction. By making the elastic force slide freely, the strong elastic force of the spring 8 is applied to the end of the locking pin 3 protruding from the bearing hole, and this elastic force is applied to the locking pin. The transmission is transmitted to the free end of the locking pin moving along the guide groove to ensure that the locking pin moves without deviating from the V-shaped groove of the guide groove.

Further, a bearing 2 that swingably supports the locking pin 3 is provided on the inner surface of the case body 1 so that no protrusion exists on the outer surface of the case body 1.

Examples Figures 1 to 3 below show examples of this invention.
The diagram will be explained.

A bearing 2 with a bearing hole passing through the inner surface of the side wall of the case body 1 is provided protrudingly, and one end of a locking pin 3 formed into a U-shape by bending both ends at right angles is loosely fitted into the bearing 2 so as to be able to swing. and make the end protrude from the bearing hole.

The other side wall of the case body is provided with a through hole 5 through which a sliding body 4 that slides along the inner wall of the case body can slide in and out in the axial direction.

A V-shaped guide groove 6 is provided in the thick part protruding from the center of the sliding body, and the free end of the locking pin 3 is fitted and guided so that it can move along the guiding groove 6 of the sliding body 4. Locking recesses 7 are formed in the upper and lower parts of the V-shape of the groove 6, and when the free end of the locking pin 3 moves and fits into the locking recess 7, the sliding body 4 is moved at the end point of the insertion and removal. As shown in FIGS. 2 and 3, the transition can be temporarily stopped.

The end surface of the spring 8 at the beginning of winding is brought into pressure contact with the end of the locking pin 3 protruding from the shaft, and the end surface of the spring 8 at the end of winding is brought into pressure contact with the end surface of the sliding body 4, so that the sliding body 4 is slid in the axial direction. It is energized to fire freely.

A permanent magnet M is attached to the sliding body.

Functions and Effects Since the configuration of this device is as described above, the strong elastic force of the spring 8 is transmitted to the free end of the U-shaped locking pin 3 bent at right angles on the guide groove 6 side. Therefore, the locking pin 3 moves reliably without deviating from the guide groove 6 during sliding, and since the bearing 2 is provided inside the case body 1, it is not subjected to impact from other objects.
Moreover, it does not require the locking pin parts found in conventional products, and therefore has the effect of omitting parts and assembly time.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of this invention, in which Figure 1 is a cutaway side view showing the main part of the sliding body in a state where it is pushed and retracted, and Figure 2 is a side view of the sliding body in a state where the sliding body is pushed and retracted. FIG. 3 is a front view showing a state in which the sliding body is retracted, with the springs cut away. FIGS. 4 to 6 show examples of conventional products, and FIG. 4 is a cutaway side view showing the main parts in a state where the sliding body is pushed and retracted;
Figure 5 is a front view showing the state in which the sliding body is protruding;
FIG. 6 is a front view showing a state in which the sliding body is retracted, with the springs cut away. 3, 33... Locking pin, 4, 34... Sliding body,
6, 36... Guide groove, 7, 37... Locking recess.

Claims (1)

[Scope of utility model registration request] A sliding body to which a permanent magnet is attached is fitted into the case body using a spring so that it can slide freely in the axial direction, and the sliding body is pushed by pushing the tip of the sliding body against the biasing force of the spring. In a magnetic catcher that can be moved in and out, a bearing 2 with a shaft hole extending through the inner side wall of the case body is provided protrudingly, and one end of a locking pin 3 is formed into a U-shape by bending both ends at right angles. is loosely fitted into the bearing 2 so as to be swingable so that its end protrudes from the bearing 2, and the free end of the locking pin 3 is fitted so as to be able to move along the V-shaped guide groove 6 provided in the sliding body 4. The end surface of the spring 8 at the beginning of winding is brought into pressure contact with the end of the locking pin 3 protruding from the bearing 2, and the end surface of the spring 8 at the end of winding is brought into pressure contact with the sliding body 4, so that the sliding body 4 is slid in the axial direction. A magnetic catcher characterized by being movably biased.