JP2003314934A - Driving device of automatic ice maker and method of manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a driving device of an automatic ice maker, and its manufacturing method, wherein a switch is surely fixed without soldering the same to a printed board. <P>SOLUTION: This driving device is configurated by a switch 32 having two electrode leads 32c for feeding, and detecting a position of an ice tray 11, a holding member 33 for positioning the switch 32, and a case 16 for accommodating these members. The holding member 33 is provided with a notch 36 for allowing the electrode leads 32c of the switch 32 to penetrate therethrough, and a boom 34 for restricting the switch 32 by snap fitting. As the switch is mounted on the holding member 33 by snap fitting, only by mounting the switch 32 while deflecting the boom 34, the switch is fixed without soldering the switch to the printed board, which dispenses with the solder, and prevents the use of lead as environmental load. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive device for an automatic ice maker installed in a refrigerator or the like.

[0002]

2. Description of the Related Art Conventionally, in a drive device for an automatic ice maker installed in a refrigerator, rotation of a motor is transmitted to an ice tray by a reduction gear as disclosed in Japanese Patent Laid-Open No. 2001-304733. There is a widespread use in which the ice tray is twisted to remove the ice at the rotation position, which will be described below with reference to the drawings.

FIG. 7 is a cross-sectional view showing a drive device of a conventional automatic ice making machine, 1 is a drive device, and a motor 4 is arranged inside an upper case 2 and a lower case 3 forming an outer shell. The rotation of the motor 4 is rotated by the reduction gear 5 to the output shaft 6
Be transmitted to.

The output shaft 6 is connected to an ice tray (not shown), and the ice tray is rotated to twist the ice tray at a predetermined position to remove ice.

The output shaft 6 is formed on a cam gear 7 which is the final stage of the reduction gear 5, and the position of the ice tray is recognized by detecting the rotational position of the cam gear 7 with a switch 8.

The switch 8 is held by the lower case 3 while being fixed to the printed board 9 by soldering.

[0007]

However, in recent years, from the viewpoint of protecting the global environment, efforts to reduce the environmental load substances such as lead contained in the solder to zero as much as possible have been activated, and the printed circuit board soldering the switch is also targeted. Therefore, it is necessary to establish a new switch fixing method.

The present invention solves the above-mentioned problems of the prior art, and provides a drive device for an automatic ice maker and a method of manufacturing the same, which can surely fix a switch without depending on soldering to a printed circuit board. Is.

[0009]

According to a first aspect of the present invention, in an automatic ice making machine drive device for twisting an ice making tray in which ice is produced to separate the ice, two electrodes for feeding power are used. A switch having a lead for detecting the position of the ice tray,
A holding member for positioning the switch and a case for accommodating these parts are provided, and the holding member is provided with a cantilever for restraining the switch with a snap fit and a notch for penetrating an electrode lead of the switch. If the switch is attached while bending the cantilever, it is attached to the holding member with a snap fit, so there is no need to solder to the printed circuit board, and the use of lead, which is an environmentally hazardous substance, can be suppressed. You can

Next, a second aspect of the present invention is a drive device of an automatic ice maker that twists an ice making tray that has produced ice to separate ice, and has two electrode leads for power supply. A cantilever which is composed of a switch for detecting the position of the dish, a holding member for positioning the switch, and a case for accommodating these parts, and which holds the switch by snap-fitting the holding member to the outer periphery of the switch. And a cutout for penetrating the electrode lead of the switch in one direction that does not project the cantilever in the outer periphery of the switch, and the cantilever does not project. Since the switch is attached to the holding member only by inserting the switch from one direction in the plane direction, the switch can be easily assembled. Further, it is not necessary to solder to the printed board, and it is possible to suppress the use of lead, which is an environmentally hazardous substance.

Next, the invention according to claim 3 is the invention according to claim 1 or 2, wherein the cantilever is projected in the plate thickness direction of the holding member, and the cantilever is projected. The two electrode leads of the switch are led out in a rear surface direction opposite to the front surface direction of the holding member, and a cord connected to the electrode lead is guided in a direction opposite to the take-out direction of the electrode lead of the switch. Since the electrode lead is passed through the notch, the cord can be compactly arranged in the direction in which the switch is not pulled by using the notch.

Next, the invention according to claim 4 is the invention according to claim 3, wherein a partition wall separating the two electrode leads of the switch, which is guided toward the back surface of the holding member, is projected from the holding member. The electrode leads of the switch held by the holding member are electrically insulated from each other by the partition wall, and even if water suits, water drops do not bridge between the electrode leads, preventing short circuit due to dew condensation water. Therefore, reliability is improved.

Next, the invention according to claim 5 is the invention according to claim 4, wherein the partition wall is positioned in the plate thickness direction when the holding member is housed in the case. Prevents bending in the thickness direction to stabilize the position of the switch, and because the electrode leads are stored in the space surrounded by the partition wall and case, it is possible to prevent the electrode leads from moving and contacting each other. Improves reliability.

A sixth aspect of the invention is the invention according to the first or second aspect, wherein the case is provided with a shaft projecting on the bottom surface, and the holding member is fitted to the outer periphery of the shaft. A fitting hole for fitting is provided, and the fitting hole is fitted to the shaft to position the holding member. By this, movement of the holding member in the direction orthogonal to the shaft is regulated and the position shift of the switch is prevented. The position of the switch is stable because it is prevented.

Next, the invention according to claim 7 is the invention according to claim 1 or 2, wherein the holding member has a clamp for collecting and holding the cords connected to the electrode leads. Therefore, the switch and the cord can be integrated on the holding member, and the size can be reduced.

Next, an invention according to claim 8 is the invention according to claim 1 or claim 2, wherein the switch has a button protruding from one wall surface and the electrode is mounted from a wall surface opposite to the button. With the lead protruding
The cantilever of the holding member is provided with a hook for pressing the wall surface on the button side of the switch to prevent the switch from coming off to the button side. Since the positional deviation is prevented, a reliable operation can be realized.

Next, the invention according to claim 9 is the invention according to claim 1 or 2, wherein the holding member is provided with a detachable gate through which the switch can be detached from the restraint of the cantilever. The detachable gate is closed by the wall of the case when the member is housed in the case,
By installing the detachable gate, it is easy to attach the switch to the holding member, improving workability, and after storing the holding member in the case, the switch restricts the movement toward the detachable gate by the wall of the case, so the switch position is stable. To do.

Next, the invention of a method of manufacturing a drive device for an automatic ice maker according to claim 10 is a drive device for an automatic ice maker, which twists an ice tray in which ice is produced to remove ice. A cord is coupled to the electrode lead of the switch for position detection, and the cord is assembled on the holding member after restraining the switch with a cantilever projecting from the holding member by snap-fitting. The switch is fixed in a predetermined position by the case by fitting a fitting hole provided in the holding member in advance with a shaft provided in a case to be stored. A holding member in which the switch and the cord are integrated. The workability is improved because the switch fits in place by simply fitting the switch to the shaft.

Next, an invention of a method for manufacturing a drive unit for an automatic ice maker according to an eleventh aspect of the present invention is a drive unit for an automatic ice maker, which twists an ice tray that has produced ice to separate ice. A cord is coupled to the electrode lead of the switch for position detection, and the switch is inserted into the cantilever protruding from the holding member except one direction in the plane direction, and then the cord is assembled on the holding member. Then, by fitting a fitting hole provided in advance in the holding member into a shaft provided in advance in a case that accommodates each component of the drive device, the one direction without the cantilever is closed by the case, It regulates the positional displacement of the switch and fixes it in a predetermined position.Since the switch can be attached to the holding member by simply inserting the switch in the planar direction from one direction in which the cantilever does not project, it is easy to incorporate the switch. , And the switch is restricted in position by simply fitting the holding member is integrated with the switch and the code to the axis, because it is fixed, the assembling workability is improved.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) FIG. 1 is a front view showing the periphery of Embodiment 1 of a drive device for an automatic ice making machine according to the present invention, and FIG. 2 is a perspective view showing the inside of the same embodiment. , Fig. 3
4 is a perspective view of an essential part showing the internal parts of the embodiment, FIG. 4 is a perspective view showing the parts on the holding member of the embodiment, and FIG. 5 is a case accommodating the parts on the holding member of the embodiment. FIG. 6 is a perspective view showing the holding member before the switch is incorporated in the embodiment.

In FIG. 1, 10 is an automatic ice making machine,
An ice tray 11 that is supplied with water to generate ice, a drive device 12 that rotates the ice tray 11 to twist it to remove ice, and an ice storage box 13 that is below the ice tray 11 and that stores the ice that has been released.
And an ice detection lever 14 that is driven by the drive device 12 to detect the amount of ice in the ice storage box 13.

In FIG. 2, reference numeral 15 denotes a main body forming an outer shell of the drive unit 12, which comprises a case 16 and a cover 17.
(Note that, in FIG. 2, only the outer shape of the cover 17 is shown by a chain double-dashed line, and the inside is seen through.) Case 1
6 and the cover 17 are united by the beam 17a provided on the cover 17 being hooked on the claw 16a provided on the case 16, and further tightened by tapping screws along the screw holes 18.

A motor 19 has a shaft 19a, and a rectangular connecting plate 20 is press-fitted and fixed to the shaft 19a. (See FIG. 4) Reference numeral 21 denotes a worm gear to which the rotation of the motor 19 is transmitted by the connecting plate 20, and one end of the rotating shaft is supported by a bearing provided in the case 16. (See FIG. 3) Reference numeral 22 is a worm wheel gear whose rotation is transmitted from the worm gear 21, and its rotation axis is perpendicular to the rotation axis of the worm gear 21. (See FIG. 3) Reference numeral 23 is a first pinion gear that is integrally formed coaxially with the worm wheel gear 22, and rotates at the same speed as the worm wheel gear 22. (See FIG. 3) Reference numeral 24 is a first gear that transmits the rotation of the first pinion gear 23, and 25 is a second pinion gear that is integrally formed coaxially with the first gear 24. Rotates at the same speed as.

Reference numeral 26 is an output gear to which the rotation of the second pinion gear 25 is transmitted, and the output shaft 27 is projected from the inside of the main body 15 to the outside of the cover 17 along the rotation shaft.

The output gear 26 includes a shaft 16b (see FIG. 5) protruding vertically from the inner bottom surface of the case 16 and an output shaft 27.
Is rotatably supported by a bearing hole 17b formed in a cover 17 through which

Although an ice detecting shaft operating cam 28 and a switch operating cam 29 are provided on the end surface of the output gear 26,
Not shown.

Reference numeral 30 denotes an ice detecting shaft which rotates in accordance with the ice detecting shaft operating cam 28. One end of the ice detecting shaft 30 has an ice detecting shaft operating cam 2.
A joint 30 which forms a cam follower 30a according to 8 and the other end of which is exposed to the outside of the main body 15 and to which the ice detecting lever 14 is connected.
form b.

Reference numeral 31 denotes a switch lever (see FIG. 3) which is displaced according to the switch operation cam 29. The cam projection 31a follows the switch operation cam 29, the operation projection 31b for operating a switch described later, and ice detection when the amount of ice is insufficient. The cam follower 30a of the shaft 30 is in contact with the blocking protrusion 31c for blocking the movement, and the shaft 16d supported by the case 16.

Reference numeral 32 denotes a switch operated by the switch lever 31, which comprises a switch body 32a, a button 32b for opening and closing a contact by abutting the operation protrusion 31b of the switch lever 31, and two electrode leads 32c. . The button 32b projects vertically from one surface of the switch body 32a, and the two electrode leads project from the surface opposite to the button 32b.

Reference numeral 33 is a holding member for positioning the switch 32. The holding member 33 formed in a plate shape has a cantilever 34 that projects in the plate thickness direction and restrains the switch 32. The tip of the cantilever 34 is provided. Is provided with a hanging claw 34a protruding in the vertical direction.

Three cantilever beams 34 extend to face three of the four side faces of the switch main body 32a and extend to the button 32b.
The switch is restrained by the holding member 33 by reaching the side surface and applying the hook 34a.

The side not facing the cantilever 34 forms an attach / detach gate 35 for attaching / detaching the switch 32 to / from the restraint of the cantilever 34. (See FIGS. 4 and 6) A notch 36 (FIG. 6) for penetrating the two electrode leads 32c is formed in the flat surface of the holding member 33 that supports the switch body 32a.
(See) and the notch 36 is open at one end toward the removable gate 35.

In addition to the cantilever 34, the holding member 33 is provided with a clamp 37 that collects and binds the cords coupled to the electrode leads 32c, and is located near the cord outlet of the case 16. The switch 32 and the cord can now be integrated on the holding member.

In FIGS. 4 and 6, the holding member 33 has a motor holding portion 38 for holding the motor 19, and the motor holding portion 38 has a frame 38a for accommodating the motor 19 main body and the motor 1
It is composed of a claw 38b for grasping the end surface of the main body 9 by snap fit.

Further, the holding member 33 is provided with a fitting hole 39 for fitting with the shaft 16b provided in the case 16, and the fitting hole 39 is inserted along the shaft 16b of the case 16. As a result, the holding member 33 is positioned and stored in the case 16.

Further, the holding member 33 has partition walls 40 facing each other on the surface on the side opposite to the cantilever 34 and protruding in the vertical direction. The partition walls 40 function as electrical insulation of the electrode leads 32c of the switch 32, and Holding member 33 to case 16
It also functions as a positioning for the bottom surface when it is stored inside.

Further, the partition wall 40 also functions as a reinforcing rib of the holding member 33, prevents the bending in the plate thickness direction, and stabilizes the switch position.

Reference numeral 41 is a cord coupled to the electrode lead 32c, and a core wire 41a of the electrode lead 32c and the cord 41.
The connection is completed mechanically and electrically by surrounding the overlapped portion with a brass connecting material 42.

In the present embodiment, the switch body 32a of the switch 32 is held by the holding member 33 with the cord 41 previously coupled to the electrode lead 32c of the switch 32.
When the cantilever 34 is inserted through the detachable gate 35, the electrode lead 32c can enter from the open end of the notch 36, and does not hinder the mounting of the switch 32 on the cantilever 34.

When the switch 32 is held by the cantilever 34 and the electrode lead 32c is folded so as to be sandwiched in the partition wall 40 of the holding member 33, the cord 41 is guided to the clamp 37 side of the holding member 33.

Since the motor cord 43 is also connected to the motor 19, in the present embodiment, the holding member 33 is provided with the second clamp 44 for the motor cord 43.
The motor cord 43 is bundled at one end by the second clamp 44, then bundled together with the cord 41 by the clamp 37, and guided to the cord outlet of the case 16.

The operation of the first embodiment configured as described above will be described.

When the water supplied to the ice tray 11 freezes and ice is generated, the motor 19 is supplied with electric power from the control unit (not shown) and rotates in the forward direction (clockwise when viewed from the motor shaft 19a side). The rotation of the motor 19 is performed by the worm gear 21,
It is transmitted to the output shaft 27 via the worm wheel gear 22, the first pinion gear 23, the first gear 24, the second pinion gear 25, and the output gear 26.

The rotation of the output shaft 27 is transmitted to the ice tray 11, the ice tray 11 starts to rotate from the horizontal position (origin position), and when it rotates 130 °, it comes into contact with a corner of the ice tray 11 (not shown). ), The output shaft 27 rotates up to 160 °, but the corners of the ice tray 11 are prevented from rotating, so the ice tray 11 is twisted 30 ° to release ice. The output shaft 27 (this is called ice removal) rotates from 0 ° to 160 °,
Switch operation cam 29 provided on the end surface of the output gear 26
The cam projection 31a of the switch lever 31 is driven by the switch lever 31, and the operation projection 31b is rotated around the shaft 31d.
Since the second button 32a is operated, a signal is generated at a predetermined position.

In the present embodiment, when the amount of ice in the ice storage box 13 is insufficient, the output shaft outputs a Hi signal from 0 ° to 80 ° and then outputs a Lo signal at 160 °. H again
i signal is output.

When the ice storage box 13 has a sufficient amount of ice, the Hi signal is output from 0 ° to 45 on the output shaft, the Lo signal is output thereafter, and the Hi signal is output again at 160.

The switch 32 is L when the button 32a is pushed by the operation protrusion 31b of the switch lever 31.
An o signal is output, and a Hi signal is output when the operation protrusion 31b is separated from the button 32a.

When there is not enough ice in the ice storage box 13,
Since the ice detecting lever 14 enters deep inside the ice storage box 13, the rotation angle of the ice detecting shaft 30 increases, and the cam follower 3
A part of 0a presses the blocking protrusion 31c of the switch lever 31 and the operating protrusion 31b does not press the button 32b, so that the output range of the Hi signal becomes longer than when the ice amount is sufficient. .

Operation protrusion 31b of the switch lever 31
Repeats contact and release of the switch 32 with respect to the button 32b, but the switch 32 is held by the cantilever 34.
Since the switch body 32 is not displaced, the holding member 33 has a partition wall 40 provided on the opposite side of the cantilever 34 to insulate the two electrode leads 32b from each other. The holding member 33 has a function of positioning with respect to the bottom surface of the case 16, and the holding member 33 is not displaced.

Further, the holding member 3 is attached to the shaft 16b of the case 16.
Since the fitting hole 39 of No. 3 is fitted, the holding member 33 is not displaced in the plane direction, and the position of the switch 32 is always stable.

As described above, the drive device for the automatic ice maker according to the present embodiment has two electrode leads 32c for power supply.
A switch 32 for detecting the position of the ice tray 11, a holding member 33 for positioning the switch 32, a case 16 for accommodating these parts, and a cover 17, and the holding member 33 has an electrode for the switch 32. Since the notch 36 that penetrates the lead 32c and the cantilever 34 that restrains the switch 32 by snap fitting are provided, if the switch 32 is mounted while bending the cantilever 34, it is mounted on the holding member 33 by snap fitting. Since the switch can be fixed regardless of soldering to the printed circuit board, the solder can be eliminated and the use of lead, which is an environmentally hazardous substance, can be avoided.

Further, since no printed circuit board or solder is used, problems such as solder peeling due to a difference in thermal expansion coefficient between metal and resin and pattern breakage of the printed circuit board can be completely solved. Improves reliability.

Further, the cantilever 34 is projected in the plate thickness direction of the holding member 33, and the switch 32 is moved in the rear surface direction opposite to the front surface direction of the holding member 33 from which the cantilever 34 is projected.
The two electrode leads 32c of
The electrode lead 32 is provided in the notch 36 so as to guide the cord 41 connected to the electrode lead 32c in the direction opposite to the take-out direction.
By penetrating c, the cord 41 can be compactly arranged in the direction in which the switch 32 is not pulled by utilizing the notch 36.

Then, the cantilever 34 is projected in the plate thickness direction of the holding member 33, and the two electrode leads 32c of the switch 32 are arranged in the direction opposite to the direction in which the cantilever 34 is projected.
Since the partition wall 40 for isolating the partition wall is projected, the electrode lead 32c of the switch 32, which is constrained by the holding member 33, is separated from the partition wall 40.
Thus, the electrode leads 32c are electrically insulated from each other and do not bridge between the electrode leads 32c even if water is adhered, the possibility of short circuit due to dew condensation water is low, and the electrical insulation property and anti-condensation reliability are improved.

The partition wall 40 is for positioning in the plate thickness direction when the holding member 33 is housed in the case 16, and the electrode lead 32c is housed in the space surrounded by the partition wall 40 and the case 16. Therefore, the electrode lead 32
It is possible to prevent c from moving and coming into contact with each other, and reliability is further improved.

Further, since the partition wall 40 functions as a reinforcing rib of the holding member 33 and prevents the bending in the plate thickness direction, the switch position is stabilized.

The case 16 is provided with a shaft 16b projecting vertically from the bottom surface, and the holding member 33 is provided with a shaft 16b.
A fitting hole for fitting the outer circumference of b is provided, and the fitting hole 3 is fitted to the shaft 16b.
Since the holding member 33 is positioned by fitting 9 together, the movement of the holding member 33 in the direction orthogonal to the shaft 16b can be restricted,
The positional displacement of the switch 32 is prevented and the switch position is stabilized.

The holding member 33 is the electrode lead 32c.
Since the switch 37 and the cord 41 can be integrated on the holding member 33, the size reduction can be achieved.

The switch 32 has a structure in which the button 32a is projected vertically from one wall surface and the electrode lead 32c is projected from the wall surface opposite to the button 32a. Since the switch 32 is provided with a hook 34a for pressing the wall surface of the switch 32 on the button 32a side to prevent the switch 32 from coming off to the button 32a side, the switch 32 is securely restrained by the hook 34a, and the position shift in the direction of the button 32a is prevented. To achieve reliable operation.

The holding member 33 is provided with a detachable gate 35 which allows the switch 32 to be detached from the cantilever 34 by restraint. That is, the cantilever 34 is not provided in one direction with respect to the outer circumference of the switch 32, but is opened in the plane direction, and this part is used as the detachable gate 35, so that the cantilever 34 can be held by being inserted in the plane direction from the opened one direction. The switch 32 is easily attached to the member 33, and workability is improved. Also, the holding member 3
Since the detachable gate 35 is closed by the wall of the case 16 when 3 is housed in the case 16, movement of the switch 32 in the direction of the detachable gate 35 is restricted, and the switch position is stabilized.

Then, the electrode lead 32c of the switch 32
The cord 40 is connected to the switch 32 to hold the switch 32
After being restrained by the cantilever 34 by snap-fitting, the cords 41 are assembled on the holding member 33, and the shaft 16b previously provided in the case 16 is fitted into the fitting hole 39 previously provided in the holding member 33.
Since the switch 32 can be fixed at a predetermined position by fitting the switch 32 to the predetermined position, the switch 32 can be fixed to the predetermined position by a simple assembly in which the holding member 33 in which the switch 32 and the cord 41 are integrated is simply fitted to the shaft 16b. It fits in the position and improves workability.

[0062]

As described above, according to the first aspect of the present invention.
The invention described in (1), in a drive device of an automatic ice making machine for twisting an ice tray that has produced ice to separate the ice, a switch that has two electrode leads for power supply and detects the position of the ice tray, A holding member for positioning the switch and a case for accommodating these parts are provided, and the holding member is provided with a cantilever for restraining the switch with a snap fit and a notch for penetrating an electrode lead of the switch. It is a thing. As a result, when the switch is mounted while bending the cantilever, the switch is mounted on the holding member by snap fit, so that the printed circuit board is unnecessary and soldering can be eliminated. Furthermore, problems such as solder peeling and printed circuit board pattern breakage are solved.

According to a second aspect of the present invention, in the drive device of the automatic ice-making machine for twisting an ice tray that has produced ice to separate the ice, the ice tray has two electrode leads for power supply. A switch for detecting the position of the switch, a holding member for positioning the switch, and a case for accommodating these parts, and a cantilever for restraining the switch by a snap fit to the outer circumference of the switch. A protrusion is provided except in one direction, and a notch that penetrates the electrode lead of the switch is provided in one direction of the outer periphery of the switch that does not project the cantilever. As a result, the switch is attached to the holding member only by inserting the switch in the plane direction from one direction in which the cantilever does not project, so that the switch can be easily assembled and the assembling workability can be improved. Further, it is not necessary to solder to the printed board, and it is possible to suppress the use of lead, which is an environmentally hazardous substance.

The invention described in claim 3 is the same as claim 1
Alternatively, in the invention according to claim 2, the cantilever is projected in the plate thickness direction of the holding member, and the switch of the switch is moved in the back surface direction opposite to the front surface direction of the holding member from which the cantilever protrudes. Since the two electrode leads are led out and the electrode lead is passed through the notch so as to guide the cord connected to the electrode lead in a direction opposite to the direction of taking out the electrode lead of the switch, the notch is used. The cords can be compactly arranged in the direction in which the switch is not pulled, improving workability and improving assembly quality.

The invention described in claim 4 is the same as claim 3
In the invention described in (3), since the partition wall that separates the two electrode leads of the switch guided in the rear surface direction of the holding member is projected from the holding member, the electrode lead of the switch constrained by the holding member is separated by the partition wall. It electrically insulates each other, and even if water suits, it does not bridge between the electrode leads and prevents a short circuit due to dew condensation water.
Condensation resistance is improved.

The invention described in claim 5 is the same as in claim 4
In the invention described in (1), the partition wall serves as positioning in the plate thickness direction when the holding member is housed in the case, prevents deflection in the plate thickness direction, and stabilizes the position of the switch. Since the electrode leads are accommodated in the space surrounded by the case, it is possible to prevent the electrode leads from moving and contacting each other, and the reliability is improved. Further, since the holding member is reinforced by the partition wall and the bending in the plate thickness direction is suppressed, the switch position is stabilized.

Next, the invention according to claim 6 is the invention according to claim 1 or claim 2, wherein a shaft protruding from the bottom surface is provided in the case, and the holding member is fitted to the outer periphery of the shaft. Since the fitting hole is provided and the holding hole is positioned by fitting the fitting hole into the shaft, the movement of the holding member in the direction orthogonal to the shaft can be regulated, and the position shift of the switch can be prevented. The position can be stabilized.

Next, the invention according to claim 7 is the invention according to claim 1 or 2, wherein the holding member has a clamp for collecting and holding the cords connected to the electrode leads. Since the switch and the cord can be integrated on the holding member, the size can be reduced.

Next, the invention described in claim 8 is the invention according to claim 1 or 2, wherein the switch has a button protruding from one wall surface and the electrode is mounted from a wall surface opposite to the button. With the lead protruding
Since the cantilever of the holding member is provided with a hook for pressing the wall surface on the button side of the switch to prevent the switch from coming off to the button side, the switch is securely restrained by the hook and the position shift in the button direction. As a result, the reliable operation can be realized.

Next, the invention according to claim 9 is the invention according to claim 1 or claim 2, wherein the holding member is provided with a detachable gate through which the switch can be detached from the cantilever restraint. Since the detachable gate is closed by the wall of the case when the member is housed in the case, by providing the detachable gate, the switch can be easily attached to the holding member, the workability can be improved, and the switch can be stably fixed. it can.

Next, the invention of a method for manufacturing a drive unit for an automatic ice maker according to a tenth aspect of the present invention is the drive unit for an automatic ice maker, which twists an ice tray in which ice is produced to remove ice. A cord is coupled to the electrode lead of the switch for position detection, and the cord is assembled on the holding member after restraining the switch with a cantilever projecting from the holding member by snap-fitting. The switch is fixed in a predetermined position by the case by fitting a fitting hole provided in the holding member in advance to a shaft provided in a case to be stored. As a result, the switch can be set in a predetermined position only by fitting the holding member in which the switch and the cord are integrated to the shaft, so that the assembling workability can be improved.

Next, an invention of a method of manufacturing a drive device for an automatic ice maker according to claim 11 is the drive device for an automatic ice maker, which twists an ice tray in which ice is produced to separate the ice. A cord is coupled to the electrode lead of the switch for position detection, and the switch is inserted into the cantilever protruding from the holding member except one direction in the plane direction, and then the cord is assembled on the holding member. Then, by fitting a fitting hole provided in advance in the holding member into a shaft provided in advance in a case that accommodates each component of the drive device, the one direction without the cantilever is closed by the case, The position of the switch is regulated and fixed at a predetermined position. As a result, the switch can be mounted on the holding member only by inserting the switch in the plane direction from one direction in which the cantilever does not project, so that the switch can be easily assembled and the holding member having the switch and the cord integrated can be used as the shaft. The switch is restricted to a predetermined position only by fitting, and the assembling workability and the assembling quality can be improved.

[Brief description of drawings]

FIG. 1 is a front view showing the periphery of a drive device for an automatic ice maker according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing the inside of the embodiment.

FIG. 3 is a perspective view of essential parts showing internal parts of the same embodiment.

FIG. 4 is a perspective view showing components on the holding member of the same embodiment.

FIG. 5 is a perspective view showing a case accommodating components on the holding member of the embodiment.

FIG. 6 is a perspective view showing a holding member before the switch is incorporated in the embodiment.

FIG. 7 is a cross-sectional view showing a drive device of a conventional automatic ice making machine.

[Explanation of symbols] 10 automatic ice machine 11 ice tray 12 Drive 16 cases 16b axis 32 switch 32b button 32c electrode lead 33 Holding member 34 cantilever 34a Hanging claw 35 removable gate 36 Notches 37 Clamp 39 Fitting hole 40 partitions 41 code

Continued front page    (72) Inventor Masahisa Masatoshi             2-3-3 Nojihigashi, Kusatsu City, Shiga Prefecture             Within Matsushita Cold Machinery Co., Ltd. (72) Inventor Yoshikatsu Inoue             2-3-3 Nojihigashi, Kusatsu City, Shiga Prefecture             Within Matsushita Cold Machinery Co., Ltd.

Claims (11)

[Claims] 1. A drive device for an automatic ice maker that applies a twist to an ice tray that has produced ice to remove ice, and a switch that has two electrode leads for power supply and that detects the position of the ice tray. A holding member for positioning the switch and a case for accommodating these parts are provided, and the holding member is provided with a cantilever for restraining the switch with a snap fit and a notch for penetrating the electrode lead of the switch. A drive device for an automatic ice maker, which is characterized in that 2. A drive device for an automatic ice maker that applies a twist to an ice tray that has produced ice to separate the ice tray, and a switch that has two electrode leads for power supply and that detects the position of the ice tray. A holding member for positioning the switch and a case for accommodating these parts, and a cantilever for restraining the switch by a snap fit on the outer periphery of the switch is projected on the holding member except in one direction, A drive device for an automatic ice maker, wherein a cutout that penetrates an electrode lead of the switch is provided in one direction of the outer periphery of the switch that does not project the cantilever. 3. The cantilever beam is projected in the plate thickness direction of the holding member, and two electrode leads of the switch are provided in a back surface direction opposite to a front surface direction of the holding member from which the cantilever beam is projected. 2. The electrode lead is led out, and the electrode lead is passed through the notch so as to guide a cord connected to the electrode lead in a direction opposite to a direction in which the electrode lead of the switch is taken out. The drive device of the automatic ice maker according to 2. 4. The drive of the automatic ice maker according to claim 3, wherein a partition wall separating the two electrode leads of the switch, which is guided toward the back surface of the holding member, is projected from the holding member. apparatus. 5. The drive device for the automatic ice maker according to claim 4, wherein the partition wall is positioned in the plate thickness direction when the holding member is housed in the case. 6. The case is provided with a shaft projecting from a bottom surface, the holding member is provided with a fitting hole to be fitted to an outer periphery of the shaft, and the holding hole is fitted to the holding member to hold the holding member. The driving device for the automatic ice maker according to claim 1 or 2, wherein the members are positioned. 7. The driving device for the automatic ice maker according to claim 1, wherein the holding member has a clamp that collects and holds the cords connected to the electrode leads. 8. The switch has a structure in which a button is projected from one wall surface and the electrode lead is projected from a wall surface opposite to the button, and a cantilever of the holding member has a button side of the switch. The drive device for the automatic ice maker according to claim 1 or 2, wherein a hook for pressing the wall surface is provided to prevent the switch from coming off to the button side. 9. The holding member is provided with an attachable / detachable gate that allows the switch to be attached / detached from the restraint of the cantilever, and when the retainer is housed in the case, the attachable / detachable gate is closed by a wall of the case. Claim 1 characterized by the above.
Alternatively, the drive device for the automatic ice maker according to claim 2. 10. In a drive device of an automatic ice maker that twists an ice tray to generate ice and separates the ice tray, a cord is coupled to an electrode lead of a switch for detecting the position of the ice tray, and the switch holding member is held. After the cords are constrained by a snap fit to the more protruding cantilever, the cords are assembled on the holding member, and a shaft previously provided in a case for accommodating each component of the drive device is fitted to the holding member in advance. A method of manufacturing a drive device for an automatic ice maker, wherein the switch is fixed at a predetermined position by the case by fitting a hole. 11. In a drive device of an automatic ice maker that twists an ice tray that has produced ice to separate ice, a cord is coupled to an electrode lead of a switch that detects the position of the ice tray, and a member that holds the switch. The cords are assembled on the holding member after being inserted from the one direction into a cantilever projecting except for one direction in a more planar direction, and a shaft provided in advance in a case accommodating each component of the drive device, By fitting a fitting hole provided in the holding member in advance, the one direction without the cantilever is closed by the case, the positional displacement of the switch is regulated, and the switch is fixed at a predetermined position. Manufacturing method of driving device of ice maker.