JPS6245390Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an adjustment device that can easily adjust the on/off timing of a micro SW or the like.

Conventionally, for example, the on/off timing of a micro SW has been adjusted by moving and adjusting the mounting position of the switch body or a mounting board that supports the switch body relative to an operating object that turns the micro SW on and off. However, according to this method, precise positioning and adjustment of the micro SW is required each time, and in order to make this adjustment, the mounting screws that secure the switch body or its mounting board must be loosened, and then screwed and fixed again. It has the disadvantage that it is difficult to handle and the adjustment work is extremely complicated and troublesome.

Therefore, the purpose of this invention is to provide an adjustment device with a simple structure and low cost that can perform the adjustment work extremely easily and simply without adjusting the position of the switch body when adjusting the on/off timing of a micro switch, etc. An embodiment of this invention will be described below in detail with reference to the drawings.

Figure 1 shows an example of the proposed adjustment device.
A micro SW 2 is screwed and fixed to a predetermined position of a chassis base 1 of a product such as a VTR via a mounting board 3. An adjustment member 4 for adjusting the on/off timing of the switch is disposed at a predetermined position on the chassis base 1 on the side of the micro SW 2. This adjustment member 4 has a central shaft cylinder 4 which is pivotally mounted to a shaft 5 erected on the chassis base 1 so as to be rotatable in the direction of the micro switch 2 as shown by an arrow 100.
00, a pair of arms 401 protruding from the circumferential surface of this shaft cylinder 400 in a bifurcated shape at a predetermined angle,
402. The arm 401 has a slightly thin outer shape and is flexible, and is formed to be elastically deformable within a required range in the direction of the other arm 402 as shown by the imaginary line in the figure with the shaft 5 as the center, and one end thereof is connected to the micro SW 2. When the lever 200 is rotated in this direction, it comes into contact with the lever 200 and turns it on and off. The arm 402 is formed to have more rigidity than the arm 401, and one end of a coil spring 6 whose other end is fixed on the chassis base 1 is fixed to one side of the arm 402, so that one arm 401 is connected to the arm 402. with micro
It is constantly biased in the direction away from SW2.
A positioning pin 7 is provided upright at a predetermined position on the chassis base 1 in this biasing direction, and when one side of the arm 402 comes into contact with this pin 7, the rotation of the adjustment member 4 in the above-mentioned separating direction is controlled. It's becoming regulated.

The adjustment member 4 is integrally molded using a relatively elastic resin such as nylon.

One end of a band-shaped member 8 is fixed to the tip of the arm 401. This member 8
The other end extends in the direction of the arm 402, passes through a fixture 9 attached to the end, and extends a predetermined length in the other direction. The fixing fitting 9 is the member 8
As shown in Fig. 2, there are sawtooth-like protrusions 10..., 11 on the upper and lower walls of the inner periphery.
... are provided in a protruding manner, and the member 8 is prevented from coming off by engagement with these protrusions 10 ..., 11 ... and is firmly fixed and held.

On the other hand, on the chassis base 1 on the opposite side of the micro SW 2 with the adjustment member 4 in between, the control object A of the micro SW 2, which is an object to be controlled, is indicated by the arrow 101.
As shown, it is arranged so as to be able to reciprocate within a predetermined range in a direction substantially perpendicular to the arm 402, and when its tip comes into opposing contact with one side of the arm 402, the adjustment member 4 is moved around the shaft 5 by a micro switch.
The arm 4 is urged to rotate in two directions, and the arm 4 is urged to rotate in two directions.
The end of the micro switch 01 presses the lever 200 of the micro switch 2 to turn it on and off.

In the above configuration, when adjusting the on/off timing of the micro SW 2, the member 8 is
When the arm 401 is pulled by a predetermined length in the direction of the arrow 102 from the extended position shown in the figure, as shown in FIG.
The pressing operation position of the micro SW 2 with respect to the lever 200 by this arm 401 is the other arm 40.
Movement is adjusted in two directions. As a result, micro
The on/off timing of SW2, that is, its operating position is adjusted and set within a range corresponding to the amount of elastic deformation l of arm 401. In this case, the member 8 is firmly fixed to prevent it from coming off by engaging with the protrusions 10 and 11 of the fixing fitting 9 and is prevented from sagging, so that the arm 401 is reliably held in the curved and deformed state at the adjustment position. .

After the on/off timing has been adjusted and set in advance, when the operating object A is actuated and driven in the direction of the arrow 101 as shown by the imaginary line in FIG. 6 and biases the micro SW in the 2 direction. As a result, the adjustment member 4 is urged to rotate at a predetermined angle in the direction of the micro SW 2 as shown by the arrow 100, and the end of the arm 401 is brought into opposing contact with the lever 200 of the micro SW as shown in FIG. Push this down onto the switch body, then move the operating object A to arrow 1
When the adjustment member 4 is moved back in the direction opposite to 01, the adjustment member 4 is rotated back to the position of the pin 7 in the direction of detachment from the micro SW 2, as shown in FIG.
The pressure on the lever 200 by the micro SW 2 is released, and the micro SW 2 is thus turned on and off.

In this case, according to this embodiment, the arm 401 is flexible and is formed to be elastically deformable within a required range, and is easily deformable, so that, for example, the operation object A is moved in the direction of the arrow 101 with respect to the arm 402. Even when the amount is large, this arm 401
By further swinging the lever 200 in the negative direction, the pressing force acts on the lever 200 at a substantially constant rate.

Furthermore, according to this embodiment, the adjustment of the on/off timing of the micro SW 2 is not affected by the mounting position of the switch or the magnitude of the operation amount of the operation object A that turns it on and off, and the adjustment that is interposed between Since this can be done by simply elastically deforming one arm 401 of the member 4 within a predetermined range, there is no need to adjust the mounting position of the micro SW 2 as in the prior art, and the cumbersome work associated with this adjustment is eliminated.

In the above embodiment, it has been explained that the adjustment member 4 is integrally molded by resin molding, but after the arms 401 and 402 of this member 4 are constructed separately, they are combined into one body. You can. FIG. 5 shows an example of this, and the adjustment member 30 includes a shaft cylinder 31 whose peripheral surface is notched in a predetermined range at one end, and one arm 301 protruding from the peripheral surface of this shaft cylinder 31. Shaft cylinder 31 on one end side of the circumferential surface
A shaft tube 32 having a protrusion 321 that can be fitted into a notch 311 of the shaft tube 32, and a shaft section 322 that is fitted into the fitting hole 312 of the shaft tube 31 in one end thereof and is coaxially and integrally protruded. , consists of one arm 301 and the other arm 302 protruding from the circumferential surface of the protrusion 321 of the shaft tube 32 so as to form a bifurcated shape at a predetermined angle. An insertion hole 323 that is inserted into and supported by the shaft 5 is formed through the shaft in the axial direction. The adjustment member 30 is configured such that the cutout portion 311 and the protruding portion 321 are fitted into each other, and the fitting hole 3
12 by inserting the shaft portion 322 into the double shaft cylinder 3.
By fitting and fixing between 1 and 32, they are combined into one body. The arm 301 is connected to the shaft 5 of the adjustment member 30.
The lever 200 of the micro SW 2 is turned on and off by rotating the lever 200 of the micro SW 2, and as described above, the outer shape is slightly thin and flexible, and by pulling the member 8, the lever 200 of the micro SW 2 is turned on and off. The arm 302 is formed to be elastically deformable in the direction of the arm 302. The arm 302 has more rigidity than the arm 301, and as described above, the spring 6
While being biased in the direction away from SW2,
The micro SW2 is pressed by the tip of the operating object A.
It is designed to be biased to rotate in the direction.

In the above embodiment, the member 8 is described as being in the form of a belt or band, but instead of this, a wire or other linear material can be used.

As described above, according to the proposed adjustment device, the micro
An adjustment member having a pair of arms forming a substantially bifurcated shape at a predetermined angle between a switch, etc. and an operating object that turns it on and off is pivoted so as to be rotatable in the direction of the switch, and one side that faces and abuts the operating lever of the switch. The arm is formed to be elastically deformable, and the operating position of the switch can be adjusted according to the amount of deformation, that is, the timing of its on/off operation can be adjusted, making it easier to adjust the mounting position of the switch body than in the conventional case. etc., and the on/off timing adjustment can be performed extremely easily and easily. Moreover, since only an adjustment member having a pair of bifurcated arms is provided between the switch body and its operating object, the structure is simple and the cost is low.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of the adjusting device of the present invention, FIG. 2 is a sectional view of a fixing fitting used in the device, FIGS. 3 and 4 are side views illustrating the timing adjustment operation of the adjusting device of the present invention, respectively. FIG. 5 is an exploded perspective view showing another example of the adjusting member used in the present device. 301,401...One arm, 302,4
02...Other arm, 2...Micro SW (switch), A...Operation object, 4, 30...Adjustment member, 5...Shaft, 31, 32, 400...Shaft cylinder, 8
...(band-shaped or linear) member, 6... coil spring, 7... pin.

Claims (1)

[Scope of utility model registration request] A device for adjusting the on/off timing of a switch such as a micro SW, which is pressed in the direction of the switch by one elastically deformable arm that turns on and off the switch and an operating object that can reciprocate in the direction of the switch. 2 with the other arm
A fork-shaped adjusting member is pivotally attached between the switch and the operating object so as to be rotatable within a required range, and one end of a band-shaped or linear member fixed to the one arm is fixed to the other end of the adjusting member. The switch is inserted into and supported by a fixing fitting provided on the other arm so as to be prevented from coming off, and the operating position of the switch is changed by elastic deformation of the one arm by pulling the band-like or linear member toward the other end. An adjusting device characterized in that the movement is adjusted according to the amount.