JPS6245405B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a locking device for removably locking and fixing one member to another member, and has improved reliability of operation.

In a conventional lock device having a lock pin, an operation button, and a leaf spring that biases the lock pin in the locking direction, when the end of the operation button is pressed, that is, when an unbalanced load is applied to the operation button,
It may operate with the lock pin tilted.
There were problems with operational reliability, such as difficulty in removing the device from the locking part.

The present invention eliminates these conventional drawbacks, and embodiments thereof will be described below with reference to the accompanying drawings.

The figure shows an inverted L-shaped iron main body 3 with a base 1 on the lower part and a temperature control knob 2 on the front upper surface, with vertical grooves 4a and horizontal grooves 4b on both sides. A guide groove 4 is formed. Reference numeral 5 denotes a case-like handle that is open at the bottom and rear and has a boat shape similar to that of the iron main body 3, and a projection 6 that projects inward from the lower rear part of the handle is fitted into the guide groove 4. and is movably attached to the iron main body 3. 7 is a locking recess formed opposite to the projection 6, and 8 is an inclined surface similarly provided at the rear of the projection 6. Reference numeral 9 denotes a locking device disposed at the rear of the iron main body 3. The lock device 9 is
A push button 10 molded from synthetic resin and this push button 10
A lock pin 11 is attached to the lateral groove 4b of the guide groove 4, and a peripheral wall portion thereof protrudes and retracts from the lateral groove 4b of the guide groove 4, and these push buttons 10.
and a leaf spring 1 that urges the lock pin 11 upward.
It consists of 2. More specifically, from the push button 10, there is a hole 13 formed on the rear upper surface of the iron main body 3.
A pair of leg pieces 14 are vertically provided to pass through the hole, and a keyhole-shaped fixing groove 15 with a narrow entrance width is formed at the tip of each leg piece 14. On the other hand, the lock pin 11 has a small diameter portion 16 facing the leg piece 14. The lock pin 11 is attached by press-fitting the small diameter portion 16 into the fixing groove 15 while widening the entrance width of the fixing groove 15 by utilizing the elasticity of the leg piece 14. Of course, the lock pin 11 is installed after the leg piece 14 of the push button 10 is passed through the hole 13. In addition, one end of the leaf spring 12 is the iron main body 3
It is screwed to the lower surface of the lock pin 11, and the free end is in elastic contact with the lower part of the lock pin 11 located between the leg pieces 14. 17 is formed in the longitudinal direction on both sides of the iron main body 3, and is a groove that partially reaches the horizontal groove portion 4b of the guide groove 4, and the end of the pin 11 is fitted into this groove 17. It is something.

Now, to describe the movable operation of the handle 5, when the handle 5 is moved downward to position the protrusion 6 below the vertical groove 4a of the guide groove 4, the iron main body 3 and the temperature control knob 2 are moved by the handle 5. This makes it possible to make a small and compact iron that is convenient for carrying around (Fig. 1, Fig. 7 A). When using the iron next time, move the handle 5 upward as shown by arrow a in Fig. 7 A (Fig. 7 B).
After that, it moves backward as shown by arrow b. At this time, the protrusion 6 also rises in the vertical groove part 4a of the guide groove 4, and then slides backward in the horizontal groove part 4b. Then, as the lateral groove portion 4b of the projection 6 slides,
The inclined surface 8 once moves the lock pin 11 downward and allows the protrusion 6 to advance. When the protrusion 6 reaches a predetermined position, the locking pin 11 engages with the locking recess 7 under the urging force of the leaf spring 12, thereby locking the handle 5.
This state is the position of the handle 5 when using the iron (Fig. 2, Fig. 7 C), and by sliding the handle 5 backward, the temperature control knob 2 can be operated, and the base 1 can be operated. The tip can be seen visually, making ironing easier.

To return the handle 5 to its initial state, press the push button 10.
Move the lock pin 11 down through the (Fig. 6 B),
This can be done by disengaging the engagement recess 7.

By the way, in the locking device 9, the leaf spring 12 is slightly narrower than the push button 10 at its tip, but the other portions are set to have a width similar to or greater than the width of the push button 10.

Therefore, even if an unbalanced load is applied to the push button 10, the leaf spring 12 will not be twisted, and the lock pin 11 will also surely move in parallel accordingly.

In the above embodiment, an example has been described in which the lock device is applied to a movable handle of an iron, but it goes without saying that the present lock device can be applied to other devices than the above-mentioned iron.

In this way, according to the present invention, by setting the width of the leaf spring in relation to the spacing between the legs of the operation button,
No matter how the operating button is operated, the locking pin always operates normally, thereby ensuring that the member is unlocked.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an iron showing an embodiment of the present invention, FIG. 2 is a perspective view of the iron in use, FIG. 3 is an exploded perspective view, and FIG. 4 is an exploded perspective view of the locking device.
5 is a sectional view of the same, FIGS. 6A and 6B are illustrations for explaining the same operation, and FIGS. 7A, 7B and 7A are illustrations for explaining the movable operation of the handle. 3... One member (iron main body), 5... Other member (handle), 7... Locking portion, 10... Operation button (push button), 11... Lock pin, 12... Leaf spring.

Claims (1)

[Claims] 1. A lock pin that is movably attached to one member and detaches from a locking portion of the other member when an operation button is operated, and is connected to the lock pin via a pair of legs provided apart in the axial direction of this lock pin. and a leaf spring having one end facing the lock pin and biasing the lock pin in a locking direction, the width of the leaf spring being set to be approximately the same as the spacing between the leg pieces.