JPS5939582Y2 - Ice storage detection switch - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a water storage detection switch, particularly a water storage detection switch provided in an ice maker.

Traditionally, ice makers store the produced ice,
A water storage detection switch is used to detect when the amount of water stored has reached a predetermined amount and stop the entire ice making cycle.

Figure 1 is a front sectional view showing a conventional water storage detection switch.
In the figure, 1 is a water storage detection switch, 2 is a micro switch,
3 is the actuator of the microswitch 2, 4 is the switch movable part of the microswitch 2, and 5 is the microswitch 2.
6 is a screw, T is a screw plate, 8 is a conductor, 9 is a water storage detection lever, 9' is a water storage detection lever 90
It is the axis of rotation.

A simplified diagram of the conventional water storage detection switch 1 shown in FIG. 1 is shown in FIG.

What can be seen from Fig. 2 is that the water storage detection lever 90 and the rotating shaft 9
Since the length a from ' to the engagement point between the water storage detection lever 9 and the actuator 3 is short, the rotation angle of the actuator 30 cannot be obtained sufficiently, and the amount of movement of the switch movable part 4 is therefore insufficient, making it difficult to adjust the position of the microswitch 2. This had to be done for each individual water storage detection switch.

The length 3a mentioned above cannot be made longer because it is limited by the space for accommodating the microswitch 2.

FIG. 3 shows a water storage detection switch devised by the applicant to eliminate the drawbacks of the conventional water storage detection switch shown in FIG. 1, and is a practical application filed on the same date as the present application. It is a cross-sectional view showing No. 56-74536 (Japanese Utility Model Publication No. 57-188078).

The difference between the water storage detection switch 10 shown in FIG. 3 and the water storage detection switch 1 shown in FIG. 1 is that the former is provided with an intermediate auxiliary lever 11.

By providing this intermediate auxiliary lever 11,
By rotating the water storage detection lever 9 at a desired small rotation angle using the "lever" principle, the actuator 3 can be rotated more than in the case of FIG. can.

However, from k, the water storage detection switch 10 shown in FIG.
In this case, the intermediate auxiliary lever 11 is activated by the water storage detection l/bar 9.
After the two are rotated, for example, they are assembled at right angles, and even if the water storage detection lever 9 returns, the intermediate auxiliary lever 11
does not return to the state shown in FIG. 3, and due to carelessness during assembly, as shown in FIG. This may result in excessive rotation and the desired function may not be achieved.

Furthermore, another problem is that due to inexperience or carelessness in the assembly process, it may be assembled in the position shown in FIG. fx may not be able to perform the desired function.

Therefore, the present invention has been made with the aim of eliminating such drawbacks.In the present invention, a leg portion is further provided at one end of the intermediate auxiliary lever, which consists of only a horizontal portion in the conventional art, and which hangs down approximately at right angles to the horizontal portion. When the water accumulation detection lever rotates, the leg portion comes into contact with the lower corner of the tip of the horizontal portion of the water accumulation detection lever to prevent excessive rotation of the intermediate auxiliary lever, and when the water accumulation detection lever returns to rotation, the lower corner of the tip comes into contact with the leg. This structure allows the intermediate auxiliary lever to be forcibly returned to its original position and prevents assembly errors.

Hereinafter, embodiments of the water storage detection switch according to the present invention will be described.

FIG. 5 is an enlarged cross-sectional view showing the engagement portion between the actuator 3 of the microswitch 2, the intermediate auxiliary lever 12, and the ice storage detection lever 9. The water storage detection lever 9 is integrally molded with resin or the like, and The intermediate auxiliary lever 12 has an opening DA' in the horizontal part 1, and is configured to be rotatable around the rotating shaft 9'.
2a, and a leg portion 12b that hangs down from approximately the center of its thickness at one end thereof, and is configured to be rotatable about a rotating shaft 12c.

Therefore, when the ice storage detection lever 9 is rotated by an angle θ from the standby state shown in FIG. 5A to as shown in FIG. 9a engages with the lower surface of the horizontal portion 12a of the intermediate auxiliary lever 12 and rotates the horizontal portion 12a, thereby causing the actuator 3 of the microswitch 2 to rotate and move the switch movable portion 4 up and down to detect completion of water storage. .

At this time, the leg portion 12b of the intermediate auxiliary lever 12 enters into the opening 9'' of the ice storage detection lever 9, and as the rotation angle θ becomes larger, the tip lower corner portion 9 of the horizontal portion 20 of the ice storage detection lever 9 increases.
b, which prevents the intermediate auxiliary lever from over-rotating.

Thereafter, when the water storage detection lever 9 is rotated back to its original position due to the use (removal) of the ice block, the tip lower corner i9b of the water storage detection lever 9 is connected to the leg 12b of the intermediate auxiliary lever 12.
, so it can be forcibly returned to its original position.

Therefore, in FIG. 5, FIG. 5A, and FIG. 5B, the water storage detection lever 9 is restricted to the lower end of the microswitch fixing support member 5 in the direction of arrow A, and can only rotate to a nearly vertical position, and is only able to rotate in the direction of arrow B. Since the intermediate auxiliary lever 12 always rotates in relation to the rotation in the direction, when the water storage detection lever rotates to the angle θ, the movable part 4 of the microswitch is moved up and down via the actuator 3. Water storage can be detected reliably.

Further, when the water storage detection lever 9 is rotated by an angle greater than the angle θ, the intermediate auxiliary lever 1 is rotated as shown in FIG. 5B.
2(7) The 14 part 12b approaches the lower end corner part 9b of the lever 9 and comes into contact with it to restrict further rotation, so that it rotates when the lever 9 rotates in the direction of arrow B in FIG. Prevents overdoing.

In this way, the conventional intermediate auxiliary lever 1 consists of only a horizontal part.
By providing a leg portion at one end of the lever 2 that comes into contact with a part of the water storage detection lever 9 when the detection lever 9 rotates excessively and when the rotation returns, excessive rotation is prevented and the intermediate auxiliary lever 12
Even if the water storage detection switch 10 is difficult to return, the intermediate auxiliary lever 12 can be reliably returned by forcibly hooking it with the water storage detection lever 9. Also, when assembling the water storage detection switch 10, it is possible to The work is simple and reliable.

Furthermore, since the conventional water storage detection lever can be used as is, there is an advantage of compatibility.

[Brief Description of the Drawings] Fig. 1 is a front sectional view of a conventional water storage detection switch, Fig. 2 is a simplified diagram of the water storage detection switch shown in Fig. 1, and Fig. 3 is a cross-sectional view of a conventional water storage detection switch. Jitsugan filed on the same date in 1977
No. 6-74536 (Utility Model Publication No. 57-188078)
FIG. 4 is a front sectional view showing an inconvenient state exhibited by the water storage detection switch shown in FIG. 3, and FIG. 5 is a front sectional view of the water storage detection switch according to the invention described in K. 5A and 5B are enlarged cross-sectional views showing the engaging portion of the intermediate auxiliary lever of the switch; FIGS. 5A and 5B are enlarged sectional views of the engaging portion of the water storage detection lever and the intermediate auxiliary lever in FIG. 5 according to their operating positions; , and Figure 5C is Figure 5A.
FIG. 2... Micro switch, 3... Actuator, 9... Ice accumulation detection lever 9''...
...Opening part, 9a... Top corner part, 9b...
... Lower corner of the tip, 12 ... Intermediate auxiliary lever, i2a ... Horizontal part, 12b ... Leg part,
20...Horizontal part. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] A rotatable water storage detection lever that hangs vertically,
A device having a first horizontal portion extending from the rotation axis and having an opening adjacent to the first horizontal portion; a second horizontal portion having a lower surface that engages with an upper surface of the first horizontal portion; It hangs down from one end at a substantially right angle thereto, and when the water storage detection lever is rotated, it enters the opening until it comes into contact with the lower corner of the tip of the first horizontal part, and when the water storage detection lever returns to rotation, it enters the opening. a leg portion having a length that is forcibly returned by contacting the lower corner portion of the tip, and is rotated by the upper corner portion of the tip of the first horizontal portion in the opposite direction with the other end of the second horizontal portion as a rotation axis. a rotatable intermediate auxiliary lever; and an actuator that has a lower surface that engages with the upper surface of the second horizontal portion and is rotatable in a direction opposite to the intermediate auxiliary lever by the other end of the second horizontal portion; A water storage detection switch comprising: a microswitch having a switch movable part that engages with the top surface of an actuator and is movable in a vertical direction.