JPH08291964A - Gasket for electric refrigerator - Google Patents

Abstract

PURPOSE: To reinforce a strength of a magnet by a method wherein an insertion part having a flexible magnet having a recessed groove in a longitudinal direction of an extending or a shrinking part inserted thereinto is provided with a receptacle abutted against the recessed groove. CONSTITUTION: A sectional surface of a gasket 1 is the same over an entire circumference. A fixing part 2, an extending or a shrinking part 3 and a magnet insertion part 4 are formed in sequence from a freezer or refrigerator door toward a freezer or refrigerator. A flexible magnet 8 is internally set at a magnet insertion part 4. A back surface of the magnet 8 is formed with a U-shaped recessed groove 8a along a longitudinal direction of the magnet 8 so as to save material of the magnet 8. A receptacle 4a abutting against the recessed groove 8a is arranged at the magnet insertion part 4 of the gasket. With such an arrangement as above, it is possible to reinforce a strength of the magnet 8 weakened by a formation of the recessed groove 8a with the receptacle part 4a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gasket containing a magnet for an electric refrigerator.

[0002]

2. Description of the Related Art Conventionally, since a door of an electric refrigerator is required to be airtight when closed, a gasket 1 is attached to the door 13 as shown in FIG. I am able to do it. The door 13 is a door can 1
4, a frame 15, a foamed heat insulating material 16, a door inner plate 17 made of synthetic resin, and the like. The gasket 1 is made of a soft synthetic resin, for example, vinyl chloride resin, and has the same cross section along the entire circumference, and the mounting portion 2 is sequentially installed from the door side of the freezer and the refrigerator toward the freezer and the refrigerator.
The expansion / contraction portion 3 and the magnet insertion portion 4 are integrally formed, and the attachment portion 2 has a locking portion 6 having an arrow-shaped cross-section facing the door side on one side in the width direction inside the base body 5 in the longitudinal direction. The magnet insertion portion 6 is provided along the base end side and is reinforced by a reinforcing plate 7 between both side pieces of the base body 5. The magnet insertion portion 4 is formed in a rectangular cross section, and the magnet 8 is inserted in the insertion portion 4. In the expansion / contraction part 3, thin outer expansion / contraction walls 9 and inner expansion / contraction walls 10 are formed so as to project on both sides in the middle of the attachment part 2 and the magnet insertion part 4, and from the door side 13 to the refrigerator body 18 side. It is stretchable. Further, a partition wall 11 is formed between the magnet insertion portion 4 and the base body 5 in the expandable portion 3 and further outside the expandable wall 10 inward. Further, on the freezing and refrigerator sides of the outer surface of the partition wall 11, confidential tongue pieces 12 are provided so as to project toward the door side. According to the above configuration, since the magnet 8 is provided on the entire periphery of the door 13,
Since the magnet 8 is used in a large amount, the cost of parts increases. For this reason, conventionally, as described in Japanese Utility Model Laid-Open No. 62-25790, a groove 8a is formed on the side of the expansion / contraction part 3 of the magnet 8 to reduce the use of magnetism and reduce the cost of the magnet. Is provided. However, in this technique, since the groove 8a is formed, the strength of the magnet 8 becomes weak,
The magnet 8 has a problem that it is easily broken.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a gasket for an electric refrigerator in which the strength of the magnet is not weakened even if the groove is formed.

[0004]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention inserts a flexible magnet having a mounting portion, a telescopic portion and a recessed groove in the longitudinal direction of the telescopic portion. In a gasket of an electric refrigerator having a frame-like structure having a plurality of portions, a receiving portion that abuts the concave groove is provided in the insertion portion. Further, the receiving portion is semi-cylindrical in shape. Further, the flexible magnet is provided with a plurality of concave grooves, and the inner insertion portion is provided with a plurality of receiving portions.

[0005]

With the above construction, the receiving portion provided on the magnet insertion portion of the gasket reinforces the strength of the magnet weakened by the concave groove formed on the back surface.

[0006]

1 and 2 show an embodiment of the present invention.
The reference numerals in the figure are the same as those in the conventional example.

In the figure, reference numeral 1 denotes a gasket, and the gasket 1 has the same cross-section over the entire circumference. The mounting portion 2, the expansion / contraction portion 3 and the magnet insertion portion are sequentially provided from the door side of the freezing and refrigerator toward the freezing and refrigerator. The mounting portion 4 is formed. The mounting portion 2 is provided with a locking portion 6 having an arrow-shaped cross-section facing the door side and protruding along the length direction on one side in the width direction inside the base body 5. The base end side of the magnet insertion portion 6 is It is reinforced by a reinforcing plate 7 between both side pieces of the base body 5. The magnet insertion portion 4 is formed in a rectangular cross section, and the magnet 8 is inserted in the insertion portion 4. An expansion / contraction part 3 is formed between the mounting part 2 and the magnet insertion part 4. In the expansion / contraction part 3, a thin outer expansion / contraction wall 9 and an inner expansion / contraction wall 10 are attached to the mounting part 2 and the magnet insertion part 4. It is formed so as to project on both sides in the middle of the portion 4, and is formed to be expandable and contractible from the door side 13 to the refrigerator body 18 side. A partition wall 11 is formed between the magnet insertion portion 4 and the base body 5 outside the inner expandable wall 10, and the expandable part 3 is formed by the partition wall 11 and the inner expandable wall 10. A double wall is formed, and two hollow portions are formed between the double walls 10 and 11 and the outer stretchable wall 9. A confidential tongue piece 12 is provided on the outer surface of the partition wall 11 on the freezing and refrigerator sides so as to protrude toward the door. The gasket 1 thus formed is used with the attachment portion 2 attached to the door of the refrigerator body, but when the door is closed,
The magnet 8 is sucked when it comes close to the opening periphery of the freezer and the refrigerator, and the expansion / contraction part 3 extends along with the suction and follows the attraction of the magnet 8. When the door is completely closed, both expansion and contraction walls 9 and 10 contract so as to project to both sides, and the magnet 8 functions as a relaxation member so that the magnet 8 is not subjected to the force on the door side due to the distortion of the door. Further, when the door is opened, the expanding / contracting portion 3 extends in a balanced manner, and a force is applied evenly inside and outside to separate the magnet 8 from the freezer and the refrigerator.

Further, on the back surface of the magnet 8, a chamfered groove 8a is formed along the longitudinal direction of the magnet 8 in order to save the material of the magnet 8.

Further, a receiving portion 4a that abuts the groove 8a is provided on the magnet insertion portion 4 side of the gasket 1, and the groove 8a is provided.
The strength of the magnet 8 which has been weakened due to the formation of is formed by the receiving portion 4a.

FIG. 3 shows another embodiment of the electric refrigerator according to the present invention, in which a plurality of recessed grooves 8b are formed on the back surface of the magnet 8 and the depth of each recessed groove 8b is relatively large. The structure is made shallow to suppress the deterioration of the strength of the magnet 8 and increase the number of the concave grooves 8b to save the material of the magnet 8. Further, a plurality of receiving portions 4b that abut the concave groove 8b are provided on the magnet insertion portion 4 side, and the strength of the magnet 8 weakened due to the formation of the concave groove 8b reduces the strength of the receiving portion 4b.
It is reinforced by a.

[0011]

As described above, according to the electric refrigerator of the present invention, the strength of the magnet weakened by the concave groove provided on the back side in order to reduce the material cost of the magnet reduces the strength of the magnet. Since the receiving portion provided on the magnet reinforces, it is possible to form a groove on the magnet, which reduces the material cost of the magnet and can provide an electric refrigerator that can reduce the cost of parts of the door provided with the magnet. become.

[Brief description of drawings]

FIG. 1 is a perspective view in which a gasket of an electric refrigerator according to the present invention is partially cut away.

FIG. 2 is an enlarged sectional view of a gasket of an electric refrigerator according to the present invention.

FIG. 3 is an enlarged sectional view of a magnet insertion portion of another embodiment of the gasket of the electric refrigerator according to the present invention.

FIG. 4 is an enlarged sectional view of a gasket of a conventional electric refrigerator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 gasket 2 mounting part 3 expansion part 4 magnet insertion part 4a receiving part 5 base body 6 locking part 7 reinforcing plate 8 magnet 8a recessed groove 9 expansion wall 10 expansion wall 11 partition wall

Claims (3)

[Claims] 1. A gasket for an electric refrigerator, which is formed in a frame shape and has a mounting portion, an expansion / contraction portion, and an insertion portion in which a flexible magnet is inserted and which has a recessed groove in the longitudinal direction on the expansion / contraction portion side and which is sequentially formed. 3. The gasket for an electric refrigerator according to claim 1, wherein the inner insertion portion is provided with a receiving portion that abuts on the concave groove. 2. The gasket of the electric refrigerator according to claim 1, wherein the receiving portion has a semi-cylindrical shape. 3. The electric refrigerator according to claim 1, wherein the flexible magnet is provided with a plurality of concave grooves, and the inner insertion portion is provided with a plurality of receiving portions. Gasket.