KR100402610B1 - A door switch for Refrigerator - Google Patents

Abstract

The present invention relates to a door switch of a refrigerator. According to the present invention, the door switch 30 includes: a case 31 having a current-carrying terminal for conducting current; A cover 60 coupled to the case 31 to block the conductive terminal from the outside and ribs 50a and 50b formed at a predetermined distance from the conductive terminal and extending an insulation distance between the conductive terminal and the outside. It is configured to include. According to the present invention as described above, the insulating distance between the door switch movable terminal 35 and the refrigerator case 40 is sufficiently secured, which satisfies safety standards and prevents leakage of current.

Description

A door switch for Refrigerator

The present invention relates to a door switch of a refrigerator, and more particularly, to a door switching device having a complete insulation structure so that the current flowing inside the door switch does not leak into the refrigerator case.

The door switch is installed at one side of the case of the refrigerator, and is operated by opening and closing the door to turn on / off operation of the refrigerator's interior lamp and the refrigeration cycle. 1 shows a configuration of a door switch according to the prior art, and FIG. 2 shows a cross-sectional view along the direction A of FIG. 1.

As shown in the drawing, the conventional door switch 10 is provided with a button 12 protruding through the upper plate 11a of the case 11 from the inside of the case 11. The button 12 is a portion that substantially contacts the door, and is installed to allow entry and exit of the case 11. The top plate 11a is provided with a button through hole 11b for installing the button 12, and a guide for guiding the access path of the button 12 on the outer periphery of the button through hole 11b. 11c is formed in predetermined length.

Looking inside the case 11, the case inner end of the button 12 is supported by a spring 13. The spring 13 is contracted by the button 12 when the door is closed, and exerts an elastic force so that the button 12 can protrude when the door is opened.

In addition, the case inner portion 12a of the button 12 is formed to have a diameter larger than that of the button through hole 11b. Accordingly, since the case inner part 12a of the button 12 does not pass through the button passing hole 11b, the button 12 protrudes only a predetermined length to the outside of the case 11.

A contact portion 12b is formed at one side of the outer periphery of the case inner portion 12a of the button 12. One side of the contact portion 12b is provided with a terminal driving mechanism 14 which is in close contact with the contact portion 12b, and a movable terminal 15 and a fixed terminal 16 on one side of the terminal driving mechanism 14. Terminal switch part consisting of) is installed.

One end of the terminal driving mechanism 14 is fixed to the hinge H, and is installed to rotate left and right in association with the vertical movement of the contact portion 12b. The movable terminal 15 is pushed or elastically restored by the terminal driving mechanism 14 and is configured to be switched with the fixed terminal 16. The movable terminal 15 and the fixed terminal 16 are electrically connected to the external terminal 17, respectively.

Operation of the door switch of the refrigerator according to the prior art having such a configuration is as follows.

When the button 12 is pushed into the case 11 by one side of the door, the contact portion 12b moves downward to push the terminal drive 14 to the right. When the terminal driving mechanism 14 is pushed to the right, the movable terminal 15 is also pushed to the right, so that the movable terminal 15 is spaced apart from the fixed terminal 16. Therefore, the interior lamp is turned off, and the refrigeration cycle can be operated.

On the other hand, when the door is opened, the spring 13 contracted to the lower end of the case inner portion 12a expands, and the expansion of the spring 13 raises the contact portion 12b. When the contact portion 12b rises, the terminal drive 14 pushed to the right by the contact portion 12b returns to the left side. When the terminal driver 14 moves to the left side, the movable terminal 15 pushed by the terminal driver 14 to the right also returns to the left side, and the movable terminal 15 and the fixed terminal 16 Is contacted. When the movable terminal 15 and the fixed terminal 16 contact, the lamp inside the lamp is turned on, the refrigeration cycle is stopped.

In FIG. 2, the insulation distance I between the movable terminal 15, the external terminal 17, and the refrigerator case 20 through which the current is energized to operate the interior lamp and the refrigeration cycle is illustrated. Insulation distance refers to the distance between the current-carrying terminal of the switch and the steel part in the steel part in which the switch is installed inside the case of the insulating material, and the switch is installed, the current distance and the space distance It is divided by surface distance. The spatial distance refers to a straight line distance between the energizing terminal and the steel part, and the surface distance is a distance formed along the surface of the non-conductor when a non-conductor is interposed between the energizing terminal and the steel part. When the switch provided with the conducting terminal is installed in the steel part, the insulation distance between the conducting terminal and the steel part must satisfy at least one of the space distance or the surface distance so that current does not leak. In addition, the insulation distance measurement measures the shortest distance between the current carrying terminal and the steel case in a state in which a switch having a current carrying terminal is installed in the steel case. However, as shown in FIG. 2, when a part of the steel case is overlapped by a non-conductor of plastic, the insulation distance is measured based on the most recent ground point of the conductive terminal and the steel case.

The movable terminal 15 of the door switch, through which current flows, becomes an energization terminal, and the refrigerator case 20 becomes a steel part. The plastic case 11 of the door switch is a non-conductor interposed between the energizing terminal and the steel part. Therefore, the insulation distance between the movable terminal 15 and the refrigerator case 20 is the left end of the movable terminal 15 and the left end of the upper plate 11a of the case 11 extending above the refrigerator case 20. Become.

However, the conventional refrigerator door switch having the configuration as described above has the following problems.

As shown in FIG. 2, the insulation distance between the movable terminal 15 and the refrigerator case 20 is only 8 mm. This does not satisfy the 10 mm insulation distance between the current-carrying terminal and the steel part required by the electrical safety standard. Therefore, a case in which a current applied to the movable terminal 15 leaks to the refrigerator case 20 may occur, and the leakage current may cause damage to electric parts of the refrigerator and a problem of electric shock.

An object of the present invention is to solve the problems of the prior art as described above, to satisfy the insulation distance of the safety standard to prevent the risk of leakage of electricity.

1 is a cross-sectional view showing the configuration of a door switch according to the prior art.

FIG. 2 is a cross-sectional view along direction A of FIG. 1A; FIG.

Figure 3a is a perspective view of the cover detachment state of the door switch according to the present invention.

Fig. 3B is a sectional view showing the construction of the first embodiment of the door switch according to the present invention.

3C is a cross-sectional view taken along the direction B in FIG. 3A;

4 is a cross-sectional view showing the configuration of a second embodiment of a door switch according to the present invention;

Fig. 5 is a sectional view showing the construction of a third embodiment of a door switch according to the present invention.

Explanation of symbols on the main parts of the drawings

30: door switch 31: main body

32: Button 32a: Inside Case

32b: contact part 34: terminal drive hole

35: movable terminal 36: fixed terminal

37: external terminal 40: refrigerator case

50a: Body rib 50b: Cover rib

52: rib groove 60: cover

Refrigerator door switch according to the present invention for solving the above object, the case body can be coupled to the cover; A movable terminal installed inside the case body; A fixed terminal installed inside the case body; Switching means for turning on / off the movable terminal with respect to the fixed terminal by opening and closing the refrigerator door; And main body ribs protrudingly formed between the movable terminal and the outer surface of the case body to form rib grooves between the outer surface of the case body; Characterized in that the insulating length is extended by the body ribs and rib grooves.

And the door switch according to another embodiment, the case body; A movable terminal installed inside the case body; A fixed terminal installed inside the case body; Switching means for turning on / off the movable terminal with respect to the fixed terminal by opening and closing the refrigerator door; A cover coupled to the case body; And a cover rib protruded from the cover and inserted between the outer surface of the case body and the movable terminal; It is characterized in that the cover rib is configured to extend the insulating length.

Door switch according to another embodiment, the case body; A movable terminal installed inside the case body; A fixed terminal installed inside the case body; Switching means for turning on / off the movable terminal with respect to the fixed terminal by opening and closing the refrigerator door; A main body rib protrudingly formed between the movable terminal and the outer surface of the case body to form a rib groove between the outer surface of the case body; And a cover coupled to the case body and having a cover rib inserted into the rib groove.

According to the present invention, it is possible to expect the effect that the insulation distance can be substantially extended by the main body ribs and the rib grooves or cover ribs thereby.

Hereinafter, a preferred embodiment of a door switch of a refrigerator according to the present invention as described above will be described in detail with reference to the accompanying drawings.

Figure 3a is a perspective view of the cover 60 is removed from the door switch according to the present invention, Figure 3b is a cross-sectional view showing the configuration of a first embodiment of the door switch according to the present invention, Figure 3c is B of Figure 3a Directional cross section. 4 is a cross-sectional view showing the configuration of a second embodiment of a door switch according to the present invention, Figure 5 is a cross-sectional view showing the configuration of a third embodiment of a door switch according to the present invention.

As shown in FIG. 3A, the door switch 30 of the present invention includes a button 32 that protrudes through the upper plate 31a of the main body 31, and the button 32 is the case. It is installed so that inside and outside of (31) can be made. Inside the main body 31, the inner end of the button 32 is supported by a spring 33.

The lower end portion of the inner part of the case of the button 32 is formed with a contact portion 32a, and one side of the contact portion 32a is provided with a terminal drive hole 34 in close contact with the contact portion 32a. The movable terminal 35 and the fixed terminal 36 are provided on the side surface of the terminal driving hole 34.

The terminal driving hole 34, the movable terminal 35, the fixed terminal 36, and the like are provided on the main body 31 surface of the case 30, and these parts may include a cover 60. 31 is in a state of being spaced apart from the outside.

One side of the terminal driving hole 34 is fixed to the hinge (H), and rotates to the left and right in conjunction with the vertical movement of the contact portion (32a). The movable terminal 35 is configured to be switched with the fixed terminal 36 by the terminal driving hole 34. The movable terminal 35 and the fixed terminal 36 are connected to the external terminal 37, respectively, and the external terminal 37 supplies current to the movable terminal 35 and the fixed terminal 36. Therefore, the movable terminal 35, the fixed terminal 36, and the external terminal 37 through which current is supplied become an energizing terminal.

A main body rib 50a protrudes horizontally between the movable terminal 35 and the upper plate 31a of the case 31, and the main body rib 50a is integrally formed in the case 31. The main rib 50a is spaced apart between the upper portion of the movable terminal 35 and the upper plate 31a of the case 31 and between the upper plate 31a of the case 31. To form 52. A cover 60 is coupled to the case 31, and the cover 60 forms a front side (in the figure) of the case 31 in which the movable terminal 35 and the fixed terminal 36 are embedded. do. According to the present invention, the main body rib 50a is formed along the upper plate of the movable terminal 35, and is formed to have a predetermined distance from the upper plate 31a of the case main body 31, and thus the upper plate 31a. Rib groove 52 is formed between the and.

The insulation distance I between the movable terminal 35 of the door switch 30 and the refrigerator case 40 according to the first embodiment of the present invention is shown in Figure 3b, the main rib 50a and the rib groove ( It is formed along the surface of 52, to ensure a substantially sufficient insulation length.

4 shows a second embodiment of the present invention in a state corresponding to FIG. 3C. As shown, according to the present embodiment, the cover 60 is coupled to the front surface of the case body 31. A cover rib 50b protrudes to the right side of the cover 60, and the cover rib 50b is inserted between the upper portion of the movable terminal 35 and the upper plate 31a of the main body 31. Therefore, the insulation distance I between the movable terminal 35 and the refrigerator case 40 is formed along the surface of the cover rib 50b.

This embodiment can be said to substantially implement the main body rib 50a in the cover 60 in the first embodiment. Therefore, the cover rib 50b in the present embodiment is assembled to be inserted between the movable terminal 35 and the case upper surface 31a, so that the cover rib 50b can have substantially the same effect as the first embodiment.

According to the third embodiment of the present invention shown in Fig. 5, a main body rib 50a is formed between the movable terminal 35 and the upper plate 31a of the case 31, and the main body rib 50a is formed. A rib groove 52 is formed between the top plate 31a of the case 31.

In addition, the cover rib 50b protrudes from the cover 60. When the cover 60 is coupled to the case 31, the cover rib 50b is inserted into the rib groove 52 between the main body rib 50a and the upper plate 31a of the case 31. Therefore, the insulation distance I between the movable terminal 35 of the door switch 30 and the refrigerator case 40 is zigzag along the surfaces of the main rib 50a and the cover rib 50b.

This embodiment will be seen that the combination of the first embodiment and the second embodiment described above.

Hereinafter, the operation of the door switch of the refrigerator according to the present invention having the configuration as described above is as follows.

Door switch 30 according to the present invention is installed in the interior of the refrigerator or the main body of the refrigerator, it is installed to be in contact with the refrigerator door or one side of the door. When the refrigerator door is closed, when the button 32 is pressed by one side of the door to be inserted into the main body 31, the contact portion 32a formed at the bottom of the case inner portion 32a of the button 32 is connected to the terminal drive unit. Drive 34 to the right. The driving of the terminal driving part 34 pushes the movable terminal 35 to the right, and the movable terminal 35 is short-circuited at the fixed terminal 36. The short circuit of the terminals 35 and 36 turns off the lamp.

When the door is opened, the button 32 protrudes, and when the contact portion 32a at the lower end of the case inner portion 32a of the button 32 rises, the terminal drive 34 returns to the left side. Then, the movable terminal 35 pushed to the right by the terminal driving hole 34 returns to come into contact with the fixed terminal 36, and the lamp inside the lamp is turned on. At this time, a current flows through the movable terminal 35 and the fixed terminal 36, and a current flowing through the movable terminal 35 is formed between the movable terminal 35 and the upper plate 31a of the case 31. The leakage to the refrigerator case 40 by the 50a, 50b is prevented.

As described above, in the present invention, the ribs 50a and 50b are formed in the case 31 or the cover 50 coupled to the case 31, and the case 31 is formed by the ribs 50a and 50b. It is a technical idea that the insulation distance between the movable terminal 35 and the refrigerator case 40 therein is extended.

Within the scope of the technical idea of the present invention, many other modifications are possible to those skilled in the art.

According to the door switch of the refrigerator according to the present invention as described above, the safety standard can be satisfied. According to the configuration of the present invention, since the insulation distance between the terminal portion and the refrigerator case is sufficient, there is an advantage that the insulation distance according to the safety standard is satisfied. In addition, the sufficient insulation distance between the terminal portion and the refrigerator case prevents leakage of current in the terminal portion. Accordingly, there is also an advantage that the leakage current does not flow to the refrigerator case, thereby preventing the electric parts from being damaged or electric shock.

Claims (3)

A case body 31 to which the cover 60 may be coupled; A movable terminal installed inside the case body; A fixed terminal installed inside the case body; Switching means for turning on / off the movable terminal with respect to the fixed terminal by opening and closing the refrigerator door; And A main body rib protrudingly formed between the movable terminal and the outer surface of the case body to form a rib groove between the outer surface of the case body; The door switch for a refrigerator, characterized in that the insulation length is extended by the main rib and the rib groove. A case body 31; A movable terminal installed inside the case body; A fixed terminal installed inside the case body; Switching means for turning on / off the movable terminal with respect to the fixed terminal by opening and closing the refrigerator door; A cover coupled to the case body; And A cover rib protruded from the cover and inserted between the outer surface of the case body and the movable terminal; The door switch for a refrigerator, characterized in that the insulation length is extended by the cover rib. A case body 31; A movable terminal installed inside the case body; A fixed terminal installed inside the case body; Switching means for turning on / off the movable terminal with respect to the fixed terminal by opening and closing the refrigerator door; A main body rib protrudingly formed between the movable terminal and the outer surface of the case body to form a rib groove between the outer surface of the case body; And And a cover having a cover rib coupled to the case body and inserted into the rib groove.