JPH11144566A - Lead wire protecting structure of microswitch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obstruct the movement of an insulating tube for protecting the outer circumference of a lead wire of a microswitch against the lead wire. SOLUTION: The outer circumference of a lead wire 11a extending from a switch box 12 of a microswitch 11 housed in the switch box 12 and covered with a cover 13 detachably assembled to the switch box 12 is protected with an insulating tube 14. A projecting piece 12a extending in the extending direction of the lead wire 11a, projecting from the switch box 12, and engaging with the outer circumference of the insulating tube 14 is formed in the switch box 12, and the projecting piece 12a and the insulating tube 14 are banded together with a bundler 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lead protection structure for a microswitch.

[0002]

2. Description of the Related Art As one use form of a micro switch,
As disclosed in Japanese Utility Model Publication No. 5-8434, there is a use form in which the switch is housed in a switch box and is covered by a cover detachably attached to the switch box and used as an ice storage detection switch of an ice maker. In such a usage form, the configuration is such that the lead wires of the microswitch extend outside the switch box. Therefore, as shown in FIGS. 1 and 2, the lead wire 4 of the microswitch 3 extending outside the switch box 2 covered by the cover 1 may be protected by the insulating tube 5.

[0003]

In the lead wire protection structure shown in FIGS. 1 and 2, an insulating tube 5 fitted to the outer periphery of the lead wire 4 at a required gap is connected to a lead wire by a binding device 6 called a convex. The wire 4 is fastened and fixed to the outer periphery. However, the insulation tube 5
Is relatively thick and hard, so it may not be properly fixed to the outer periphery of the lead wire 4 as shown in FIG. Therefore, the outer periphery of the lead wire 4 may not be properly protected.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and is provided with a microswitch which is housed in a switch box and is covered by a cover which is detachably attached to the switch box. The lead wire extending out of the switch box is protected at its outer periphery by an insulating tube. In the lead wire protection structure of the micro switch, the switch box extends in the direction in which the lead wire extends and extends outside the box. Protrusions are provided that protrude and engage with the outer periphery of the insulating tube,
The present invention is characterized in that the protruding piece and the insulating tube are integrally bound by a binding tool. In this case, it is desirable to provide a locking claw that can be engaged with the binding device at the tip of the protruding piece.

[0005]

According to the present invention, since the protruding piece provided on the switch box and engaging with the outer periphery of the insulating tube and the insulating tube are integrally bound by the tying tool, the insulating tube is provided via the protruding piece. Can be firmly fixed to the switch box, the movement of the insulating tube relative to the lead wire can be prevented, and the outer circumference of the lead wire can always be properly protected by the insulating tube.

Further, when the present invention is implemented, if a locking claw that can be engaged with the binding device is provided at the tip of the protruding piece, the binding device can be retained and retained by the locking claw. ,
The reliability of the fixing strength of the insulating tube to the switch box by the binding device can be improved.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIGS. 4 to 7 show an ice storage detection switch of an ice making machine embodying the present invention. In this ice storage detection switch, a micro switch 11 is housed in a switch box 12 and is removably assembled to the switch box 12. The cover 13 is covered by the cover 13. The micro switch 11 is the same as that shown in FIG.
Is turned on by tilting the ice storage detection lever A shown in FIG.

In this ice storage detection switch,
The outer periphery of the portion where the lead wire 11 a of the microswitch 11 extends outside the switch box 12 is protected by an insulating tube 14. Note that, as shown in FIGS. 5 and 6, the cover 13 is integrally provided with a protrusion 13a for pressing the insulating tube 14 in the radial direction.

In this embodiment, as shown in FIGS. 5 and 6, the protruding piece extending in the extending direction of the lead wire 11a, protruding out of the box, and engaging with the outer periphery of the insulating tube 14 is provided in the switch box 12. 12a are provided integrally, and the protruding piece 12a and the insulating tube 14 are integrally bound by a binding device 15 as shown in FIGS. In addition, a locking claw 12b that can be engaged with the binding device 15 is integrally provided at the tip of the protruding piece 12a.

In this embodiment configured as described above, as shown in FIGS.
2, the protruding piece 12a engaging with the outer periphery of the insulating tube 14 and the insulating tube 14 are integrally bound by the tying tool 15, so that the insulating tube 1 is connected via the protruding piece 12a.
4 can be firmly fixed to the switch box 12, the movement of the insulating tube 14 with respect to the lead wire 11a can be prevented, and the outer circumference of the lead wire 11a can always be accurately protected by the insulating tube 14.

In the present embodiment, the projecting piece 12a
Is provided with a locking claw 12b that can be engaged with the binding tool 15 at the tip of the binding tool 15 so that the locking tool 15 can be retained and retained by the locking claw 12b. The reliability of the fixing strength to the switch box 12 can be improved.

In the above embodiment, the width of the projecting piece 12a is made slightly smaller than the diameter of the insulating tube 14 so that the projecting piece 1
When the insulating tube 2a and the insulating tube 14 are integrally bound by the binding device 15, as shown in FIG.
Is wound around one side of the projecting piece 12a.
The fixing was performed so that the fixing strength of the insulating tube 2a and the insulating tube 14 was increased. However, as shown in FIG. 8, the width of the projecting piece 12a was further reduced so that the insulating tube 14 was wound around both sides of the projecting piece 12a. In addition, it is possible to implement such that the fixing strength between the protruding piece 12a and the insulating tube 14 is further increased, and it is also possible to perform the process by setting the width of the protruding piece 12a to be equal to or larger than the diameter of the insulating tube 14. It is possible.

In the above embodiment, the projecting piece 12
Although the locking claw 12b engageable with the binding tool 15 is provided at the tip of a, the locking claw 12b capable of engaging with the binding tool 15 is provided at an intermediate portion of the protruding piece 12a instead of the locking claw 12b. (Not shown) may be provided.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a conventional lead protection structure for a microswitch.

FIG. 2 is a perspective view showing a main part of a conventional lead protection structure for a microswitch.

FIG. 3 is a partial cutaway view showing a relationship between the insulating tube and the binding device shown in FIG. 2 and a lead wire protected by the insulating tube.

FIG. 4 is a perspective view of an ice storage detection switch embodying a lead protection structure for a microswitch according to the present invention.

FIG. 5 is a perspective view of a main part showing a relationship among a switch box, a cover, an insulating tube, and a binding device shown in FIG. 4;

FIG. 6 is an exploded perspective view of main components before the ice storage detection switch shown in FIG. 4 is assembled.

FIG. 7 is a cross-sectional view showing a relationship among a lead wire, an insulating tube, a protruding piece, and a binding device shown in FIG.

8 is a diagram corresponding to FIG. 7 when the width of the protruding piece shown in FIG. 7 is reduced.

[Explanation of symbols]

11 micro switch, 11a lead wire, 12 switch box, 12a projecting piece, 12b locking pawl, 13
... cover, 14 ... insulating tube, 15 ... tying tool.

Claims (2)

[Claims] 1. A lead wire extending outside the switch box of a microswitch housed in the switch box and covered by a cover detachably attached to the switch box, its outer periphery is protected by an insulating tube. In the lead wire protecting structure of the micro switch, the switch box is provided with a protruding piece that extends in a direction in which the lead wire extends, protrudes out of the box, and engages with the outer periphery of the insulating tube. A lead switch protection structure for a micro switch, wherein the insulation tube and the insulation tube are integrally bound by a binding tool. 2. The lead protection structure for a microswitch according to claim 1, wherein a locking claw that can be engaged with the binding device is provided at a tip of the protruding piece.