JPS6115546Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a slide switch lock mechanism that is most suitable for use in portable electrical equipment.

Generally, in this type of electric appliance such as an electric shaver, the operating knob of the switch is locked to prevent the battery from being wasted due to the slide switch being inadvertently turned on when the appliance is being carried around. In other words, the lock mechanism is constructed such that a lock body provided separately from the operating knob is operated separately from the operating knob to lock or unlock the lock. However, with this configuration, the operation becomes a two-step operation, which is cumbersome.

For this reason, various attempts have been made to provide a lock operating body on the switch operating knob itself so that locking or unlocking can be performed simultaneously with the operation of the operating knob. As an example of the structure is shown in FIG. 4, a lock operating body 43 is fitted into an operating knob 42 set on the outer wall surface of a case body 41 so as to be movable up and down, and is supported by a contact piece Q that constitutes a switch mechanism P. The coil spring 44 biases the operating body 43 upward, and the case body 4
A lock 46 that is engaged and disengaged by a locking portion 45 provided on one side is integrally formed with the operating body 43.

However, in such a conventional configuration, the lock operating body 43 and the lock piece 46 are integrally constructed, so that variations in the dimensions of the lock operating body 43 are directly affected by the lock piece 46.

Moreover, in this type of lock mechanism, when the operating knob 42 is slid in the direction of the broken line S in FIG.
1 and a forward force R2 are applied to the lock operating body 43, and a composite force R0 of the forces R1 and R2 in the forward diagonal direction is applied to the lock operating body 43, so that it naturally tends to be pushed in in an inclined position. Therefore, the operating body 43 remains hooked to the upper and lower edges of the insertion hole 47 in the same position, and the coil spring 4
4 is shifted, this tendency will be further exacerbated and the next operation will be hindered.

Also, if the lock operating body 43 is handled carelessly and screwed in, the coil spring 44 will be twisted.
This may cause deformation and reduce the restoring force.

Further, if it is desired to change the shape or material of the lock piece 46 due to a change in the structure of the switch P side, the lock piece 46 must be molded together with the lock operating body 43, resulting in a lack of versatility.

Further, the position of the lock operating body 43 when lowered is controlled by the upper surface of the operating knob 42, that is, by pushing the lock operating body 43 with the finger F and touching the upper surface of the operating knob 42 with the pad of the finger F. Therefore, at this time, the upper surface of the lock operating body 43 and the upper surface of the operating knob 42 are approximately on the same plane, and therefore, during the slide operation, the operating knob 42
The sliding operation must be performed only by the friction acting between the upper surface and the upper surface of the lock operating body 43 and the finger F, which has the disadvantage that it is difficult to apply sliding force and operation is difficult.

This idea was made in view of the above drawbacks,
The direction will be explained below with reference to the drawings.

Figure 1 is an exploded perspective view showing an example in which the locking mechanism of this invention is applied to an electric shaver. In the figure, 1 is a case body that houses a movable blade drive mechanism (not shown), a switch contact mechanism 2, etc. , an upper case 3 and a lower case 3'. A knob 4 for operating a switch is set on the outer wall surface 1a (FIG. 2) of the case body, for example, the upper case 3, and is slidable by a predetermined distance. Guide pins 5 and 6 are provided in a protruding manner, and each of the guide pins 5 and 6 are passed through elongated holes 7 and 8 formed in the outer wall surface 1a along the sliding direction. 9 is a movable body disposed within the case body 1;
After inserting the welding protrusions 5a and 6a into the through holes 10 and 11 formed in the movable body 9, they are fused to the movable body 9 and connected to the switch operation knob 4 as shown in FIG. Switch operation knob 4
The movable contact piece M of the switch contact mechanism 2 is configured to be driven by the sliding operation.
M′ is a fixed contact piece.

A recess (FIG. 2) 12 is formed in the movable body 9, and a coil spring 13 is housed in this recess 12. Reference numeral 14 denotes a lock piece that is fitted into the recess 12 and elastically supported by the spring 13 so as to be movable up and down. For the locking parts 15, 15', the operation knob 4
It is removably engaged in the OFF position. 16 is a lock operation body, and an operation knob 16a
It consists of a stopper part 16b for abutting against the outer wall surface 1a of the case body so as to limit the amount of pressure drop during a pressing operation, and an operating rod part 16c, and the operating knob part 16a is a transparent part formed on the switch operating knob 4. It passes through the hole 17 and protrudes outward, and the tip of the operating rod part 16c passes through the elongated hole 18 formed in the outer wall of the case body 1, located between the two locking parts 15 and 15'. The locking element 16 is brought into contact with the tip of the locking piece 14, so that the locking element 16 is vertically connected to the upper surface of the recessed chamber 4a formed on the sliding surface side of the switch operating knob 4 and the outer wall surface 1a of the case body 1. It is movably positioned and elastically supported. That is, the lock operation body 16 is restricted from further movement in the upward direction by the upper surface of the recessed chamber 4a, and in the downward direction by the outer wall surface 1a of the main body case 1.

In addition, the operation knob 16a (lock operation body 1
6) Amount L of protrusion from the top of switch operation knob 4
is a lock operating body 16 whose position is regulated in the vertical direction.
The movement stroke S of the lock operating body 16 is set larger than the movement stroke S of the main body case 1.
Even if the switch is pushed until it hits point a (maximum stroke), the operating knob 16a protrudes beyond the upper surface of the switch operating knob 4.
(See FIGS. 2 and 3) Therefore, when sliding the operating knob 4 to the ON position, the lock operating body 16 engages the tip of the lock piece 14 and the locking portion with a constant pressing motion (stroke S). 15, 15', and in this case, the lock operating body 16 slides on the outer wall surface 1a of the case body 1 at the same time as the operating knob 4.

The reason why the locking parts 15, 15' are triangular is that the switch operation knob 4 can be turned from the ON position to the OFF position.
This is to ensure smooth movement of the lock piece 14 when sliding it into position, and is not particularly limited to this shape.

In the above configuration, the operation knob 4 is
When the switch is slid to the OFF position, the switch contact structure 2 is set to the OFF state via the movable body 9 that is interlocked with the operating knob 4.

At this time, if the lock operation body 16 is pressed a certain amount, it will be moved together with the operation knob 4, and the
In the OFF position, its tip is connected to the locking portion 15,
15', the operation knob 4 is
Locked in OFF position. Turn the operation knob 4 above.
To slide it to the ON position, press the lock operating body 16 a certain amount and move it in the direction of the black arrow as shown in FIG.
5 and 15', the lock state is released as shown in FIG.

Here, the lock operation body 16 and the lock piece 14
Since the two are configured separately, it is possible to correct variations in the dimensions of both the lock operating body 16 and the lock piece 14, and in particular, when the lock operating body 16 is pressed and moved, There is a tendency for the device to lean forward due to the combined force of the forward pressing force and the forward pressing force, but in this case, the pressing downward amount of the lock operating body 16 is
Since it is regulated by the outer wall surface 1a of the case body 1 and slides on the same outer wall surface 1a as the operating knob 4, the operating body 16 moves smoothly in a vertical position without being in a significant forward leaning position. In addition, the amount of pressure drop is smaller than the outer wall surface 1 of the case body 1.
Since it is regulated on the a side, it is possible to reliably prevent the lock piece 14 on the inner wall surface 1b side from being abnormally deformed and deformed or broken. Furthermore, even if rotational twisting force is applied to the lock operating body 16 due to careless handling, the rotation is blocked from being transmitted to the coil spring 13 side by the lock piece 14, so that twisting of the spring 13, etc. can be avoided. It can be prevented. Furthermore, even if the shape or material of the lock piece 14 is changed by changing the switch contact mechanism 2, etc., only the lock piece 14 can be easily changed without changing the lock operation body 16, thereby providing versatility. can.

Further, as described above, the protrusion amount L of the operation knob 16a is adjusted by the movement stroke S of the lock operation body 16.
When the switch is unlocked, the operating knob portion 16a protrudes beyond the upper surface of the switch operating knob 4 and acts as a finger resting means when the operating knob 4 slides, thereby reliably transmitting the sliding force to the operating knob 4. This allows reliable ON/OFF switching operations.

As described above, this invention has a switch operating knob slidably mounted on the outer wall of the case body, and a lock piece connected to the switch operating knob on the inner wall that prevents the switch operating knob from sliding. A recessed chamber is formed on the sliding surface side of the switch operation knob, and a lock operating body for pressing and releasing the lock piece is placed in the recessed chamber vertically between the upper surface of the recessed chamber and the outer wall surface of the case body. In addition to storing the switch in a movable and regulated position, the amount of protrusion of the lock operating body from the upper surface of the switch operating knob is set to be larger than the vertical movement stroke of the lock operating body, and the lock operating body is designed to be able to perform release operations. Since the switch operation knob is made to slide on the outer wall of the case body at the same time as the operation knob, not only can the locking or unlocking of the switch operation knob be performed at the same time as the operation of the above-mentioned knob, but also the lock operation knob itself can be slid on the outer wall of the case body at the same time as the switch operation knob. A slide switch that can be used as a means of placing a finger on the lock when turning the lock, improves operability when turning ON and OFF, and is less likely to interfere with the operation of the lock operating body.It is also versatile and practically convenient. A locking mechanism can be provided.

Furthermore, the lock operating body is housed in a recessed chamber surrounded by the switch operating knob and the outer wall of the case body, and its sliding surface is the same as the sliding surface of the switch operating knob, so it is protected against dust from the outside air and other utensils. Since the lock operating body slides after the switch operating knob slides, even if the lock operating body is small in shape, it will cause a sliding failure like sticking. This also prevents the switch operation knob from being obstructed from sliding.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing an example of the locking mechanism of the slide switch according to this invention, Fig. 2 is a sectional view of the main parts, Figs. 3 A to C are explanatory diagrams of the same operation, and Fig. 4
The figure is an explanatory diagram of a conventional example. 1...Case body, 1a...Outer wall surface, 1b...
Inner wall surface, 4... Operation knob, 4a... Recessed chamber, 1
4...Lock piece, 16...Lock operating body.

Claims (1)

[Scope of utility model registration request] A switch operation knob 4 is slidably mounted on the outer wall surface 1a of the case body 1, and a lock piece 14 is provided on the inner wall surface, which is connected to the switch operation knob 4 and prevents the switch operation knob 4 from sliding. A recessed chamber 4a is formed on the sliding surface side of the switch operating knob 4, and a lock operating body 16 for pressing and releasing the lock piece 14 is placed in the recessed chamber 4a between the upper surface of the recessed chamber 4a and the outer wall surface of the case body 1. 1a, and the lock operating body 16 is set to protrude from the upper surface of the switch operating knob 4 to be larger than the vertical movement stroke S of the lock operating body 16. ,
The lock operating body 16 is a slide switch lock mechanism that slides on the outer wall surface 1a of the case body 1 at the same time as the operating knob 4 during a release operation.