KR20080068431A - A connector housing with a sealing structure - Google Patents

Abstract

A connector housing with a sealing structure is provided to configure a pair of connectors integrated with a fixing board, transform a terminal position fixing unit in the cover shape of the connectors to seal the inside of the connectors, and form semicircular grooves and through grooves in the terminal position fixing unit, thereby preventing the leakage of a foaming agent to improve productivity. A connector housing(100) with a sealing structure includes a fixing board(110), a pair of connector bodies(120), and a terminal position fixing unit(200). The fixing board is attached to the surface of a wall partitioning the inside and outside of a partition and has a connector insertion hole of a through hole in the center portion of a fixing board body. The pair of connector bodies are integrated with the fixing board so that terminal lines(40) can be connected through the connector insertion hole in both sides of the fixing board, and has plural holding protrusions(140) corresponding to both facing sides of the connector bodies. The terminal position fixing unit fixes the terminal lines inserted into the connector bodies not to be separated from the connector bodies, is formed to cover the open surface of the connector bodies when being joined to the connector bodies, and has plural through holes for the terminal lines to be inserted.

Description

Connector housing with a sealing structure

1 is a view showing the configuration of a connector housing connector according to the prior art.

Figure 2 is a view showing a state coupled to the wall by applying the connector housing and the connector shown in FIG.

3 is a view showing a connector housing in a sealed structure according to an embodiment of the present invention.

4 is an enlarged view illustrating the terminal position fixing unit illustrated in FIG. 3.

<Description of the symbols for the main parts of the drawings>

100: connector housing 110: fixed plate

120: connector body 130: adhesive tape

140: locking projection 150: core portion

200: terminal position fixing body 210: terminal position fixing body

220: semicircle groove 230: support plate

240: locking plate 250: locking groove

The present invention relates to a connector housing having a sealed structure, and more particularly, a polyurethane foam, which is a heat insulating material, is attached to a wall on which foam is foamed to supply power to an electric component configured outside the heat insulating material, but the foamed heat insulating material does not leak to the outside. It relates to a connector housing having a closed structure characterized in that the sealing to prevent.

In general, a housing is a framework for wrapping and protecting a machine's parts or appliances, and waterproofing harness connections formed in a product such as a washing machine or dishwasher using water, or insulated like a product such as a refrigerator. By sealing the connection by foaming the insulation inside the product for the purpose, it prevents the foamed insulation from leaking into the gap of the connection, or the connection is electrically Used to prevent failure.

In particular, the connector housing for foam interior applied to a refrigerator is located inside a partition wall in which polyurethane foam, which is a heat insulating material, is foamed, and is attached to an inner wall that separates the inside and the outside of the heat insulating material, thereby forming an electric component formed outside the heat insulating material. Easily supplies power to the back.

In the connector housing for foam interior, the polyurethane foam used as a heat insulating material is a polymer compound made of a urethane bond, which is 10 times larger in volume than the original volume through a foaming process. Due to this, considerable pressure is applied to the connector housing embedded in the polyurethane foam, which causes leakage of foamed insulation through the attachment portion between the connector housing and the wall or the internal gap of the connector housing itself, resulting in poor contact between the terminal or the power supply. It causes the assembly failure of the housing.

On the other hand, the terminal line is inserted into the connector housing is configured to be attached to each of the male and female terminals fastened corresponding to each other at the end of the wire, in the general case to maintain a sufficient coupling force that the terminal line is not easily separated by only fastening of the male and female terminal lines.

However, in the case of a connector housing embedded in a foamed polyurethane foam, such as used in a refrigerator, terminal detachment may occur due to the pressure applied during foaming, and the terminal is refastened due to the detachment of the terminal because the insulation is foamed. Have difficulty. Therefore, the terminal position fixing (TPA) is used as a secondary means to more reliably prevent the terminal line from being detached from the connector, thereby securing the binding force between the terminal line and the connector in a mechanical structure. That is, the terminal position fixing portion pushes the protruding portion of the terminal line in the direction opposite to the deviation direction inside the connector body so that the terminal line does not come off from the connector. Therefore, the terminal position fixing portion allows the inserted terminal line to secure the correct position according to the shape of the core which is the internal structure of the connector.

In addition, in order to prevent the leakage of the foam liquid, an adhesive tape having a release paper attached to the adhesive surface is attached to the fixing plate of the connector housing attached to the wall to strengthen the contact force with the wall, and In order to prevent the gap, that is, the gap due to the mold structure of the connector housing itself and the assembly tolerance of the product connection part, the leakage of the foamed liquid is prevented by connecting the sponge and tape to the outside of the connector inserted into the connector housing.

However, the sponge used to prevent the leakage of the foaming liquid in the connector housing embedded in the polyurethane foam according to the prior art has a property of causing a chemical reaction with the foaming liquid to melt, so that There is a problem of increasing the defective rate.

In addition, in order to insert the connector into the connector housing, a through hole must be formed in the fixing plate of the connector housing, and even after the connector is coupled to the through hole, the sealing property of the through hole itself is inferior. However, even if the liquid-proof means is applied, even in this case, the sponge is chemically reacted with the foam liquid to melt, so that the foam liquid has a problem of leaking through the gap of the through hole.

The present invention is to solve the above problems as the connector housing attached to the inner wall of the polyurethane foam to be foamed for the purpose of thermal insulation to have a self-sealing structure so that the foam liquid leaks to the outside without the use of a separate liquid-proof means The purpose is to prevent it.

That is, a fixing plate attached to the inner and outer boundary surfaces for power supply between the inside and the outside of the heat insulator, the connector body integrally formed with the fixing plate attached, and the plurality of terminal lines are fitted, and the inserted terminal lines are separated from the connector body. It is an object of the present invention to provide a connector housing having a sealed structure composed of terminal position fixing parts which are fixed so as not to be separated and cover and seal the connector body.

In order to achieve the above object, the connector housing having a sealed structure according to the present invention is embedded in a polyurethane foam insulation that is foamed between partitions of a product inside and supplies power to an electrical component configured outside the insulation. It is attached to the wall separating the outside, the fixing plate is formed in the center of the body through the connector insertion hole is formed, and the fixed plate is formed integrally with the fixing plate so that the terminal line can be connected through the connector insertion hole on both sides of the fixing plate and facing the body A pair of connector body formed with a plurality of engaging projections corresponding to both sides of the viewing and fixed to prevent the terminal line inserted into the connector body from being separated, so as to cover the open surface of the connector body when combined with the connector body Is formed, a plurality of through holes so that the terminal line can be inserted Characterized in that it comprises a terminal position fixing is formed.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing the configuration of a connector housing and a connector according to the prior art.

Referring to FIG. 1, a connector housing 10 according to the related art and a pair of male and female connectors 20 and 30 inserted into the connector housing 10 will be described. First, the connector housing 10 may have an adhesive tape 13 on a wall thereof. It consists of a fixing plate (11) attached through the) and the prevention frame (12) which is integrally formed with the fixing plate (11) and partitions a space into which the connector (20) is inserted.

Tape 13 is attached to one side of the fixing plate 11, the adhesive side of the adhesive tape 13 is protected through a release paper before the attachment process. In addition, the fixing plate 11 is formed with a penetrating connector insertion hole 14 to connect the terminal lines 40a and 40b respectively provided inside and outside of the insulating plate to the boundary of the fixing plate 11.

In the connector housing 10, a pair of male and female connectors 20 and 30 in which a plurality of terminal lines 40a and 40b are inserted are inserted into both sides of the fixing plate 11 and connected to each other.

The female connector 20 located in the inner region where the heat insulating material is foamed, that is, the region provided with the prevention frame 12 integrally formed on the fixing plate 11, has a body 21 fitted into the connector insertion hole 14, and a connector insertion hole. The locking portion 22 attached to a position corresponding to the outer upper and lower surfaces of the connector body 21 so that the connector body 21 is not easily removed from the connector body 21, and the inserted connector body 21 of the connector body 21 so as not to fall into the outer region of the heat insulating material. A locking projection 24 is formed to fix the stopper 23 protruding around the outer surface and the terminal position fixing portion 26 inserted into the open surface of the female connector 20.

As such, the female connector 20 having the above configuration is positioned in the inner region in which the insulation is foamed, and the male connector 30 coupled to the female connector 20 in pairs is configured in the outer region of the insulation. do.

Since the male connector 30 is inserted into the female connector 20, the male connector 30 is not provided with the locking portion 22 and the stopper 23 configured in the female connector 20, and the size of the connector body 31 is also small. However, since the terminal line 40b is also inserted into the male connector 30, a locking projection 34 is formed, and the terminal position fixing portion 36 is fitted into and fixed to the locking projection 34.

On the other hand, the pair of male and female connectors 20, 30 is the body size is determined so that the body can be fitted to each other and the shape and structure of the core portion (25, 35) is determined.

2 is a view showing a state coupled to the wall by applying the connector housing and the connector shown in FIG.

Referring to FIG. 2, the fixing plate 11 of the connector housing 10 mentioned in FIG. 1 is attached to the wall 90 through the adhesive tape 13, and the pair of male and female connectors 20 and 30 are connected to the connector housing. By being inserted into and connected to (10), the inside and the outside of the heat insulating material are connected by the terminal lines 40a and 40b.

In the left region of the wall surface 90, that is, the region where the prevention frame 12 is attached to the fixing plate 11, the sponge 50, which is a liquid-proof means, does not leak through the connector housing 10 so that the thermal insulation material foamed on the female connector 20 does not leak through the connector housing 10. ) And tape 60 are used. The sponge 50 surrounds the female connector body 21 and a part of the terminal line 40a inserted into the connector 20 so that the terminal position fixing part 26 fixed to the female connector 20 is not visible.

In addition, after inserting the female connector 20 wrapped in the sponge 50 to the connector housing 10, the outside of the sponge 50 and the prevention frame 12 of the connector housing 10 is fixed, the gap that leaks Wrap the tape 60 so that it does not occur.

On the other hand, the female connector 20 is inserted into the connector housing 10, the sponge 50 wrapped in the inner protection frame 12 is also pushed in between the female connector 20 and the connector insertion hole 14 (see FIG. 1). Prevents leakage of foaming liquid by preventing gaps.

3 is a view showing a connector housing having a sealed structure according to an embodiment of the present invention.

Referring to FIG. 3, the connector housing 100 having the sealed structure according to the present invention includes a connector housing 10 and a pair of male and female connectors 20 and 30 illustrated in FIGS. 1 and 2. Characterized in that, the terminal position fixing portion 26 for fixing the position of the terminal line so that the terminal line does not fall out is deformed in the shape of a cover to have a role of sealing the open surface of the connector body 120 as well as position fixing. It features.

That is, the connector housing 100 having a sealed structure according to the present invention is embedded in the partition wall in which the heat insulating material is foamed, and the fixing plate 110 attached to the inner wall that separates the inside and the outside of the partition wall, and the fixing plate 110 of the A pair of connector body 120 and the connector body 120 is formed integrally with the fixing plate 110 so that the terminal line 40 can be connected to both sides, and a plurality of engaging projections 140 are formed on the outer surface of the body. The terminal wire 40 is inserted into the fixing to prevent the terminal wire 40 is inserted, and the semicircular groove 220 is formed around the body to form a through hole through which the terminal line 40 is fitted when the connector body 120 is coupled to the connector body 120. It consists of a terminal position fixing part 200 that can cover the open surface of the 120.

A through-hole is formed in the center portion of the fixing plate 110 to connect the inner region of the insulating material and the outer region of the insulating material through a pair of connector bodies 120 coupled to both sides of the fixing plate 110. Through).

One side of the fixing plate 110 is attached to the adhesive tape 130 having a size larger than the area of the fixing plate 110, so that the connector housing 100 is in close contact so that a gap does not occur on the wall so that the heat insulating material does not leak. .

In the present invention, the fixing plate 110 is made of a flat shape, but the shape of the fixing plate 110 may be freely deformed, depending on the shape of the wall surface to be attached.

The core part 150 partitioning the connector body 120 and the size of the pair of hollow connector body 120 has an external size and a partition wall shape of the core part 150 according to the type and number of the terminal lines 40. And the structure is determined.

In the present invention, the partition structure of the core part 150, which is the internal structure of the connector body 120, is divided into six zones so that one terminal line 40 is inserted into each zone.

Meanwhile, the terminal line 40 inserted into the partition structure of the core part 150 has the same terminal structure as the male and female terminal lines 40a and 40b shown in FIG. 1, and is easily bound in the core part 150.

The terminal position fixing part 200 has a terminal plate fixing body 210 having a plurality of semicircular grooves 220 formed on a side thereof, and a support plate for fixing the terminal line 40 inserted into the connector body 120. 230 and a locking plate 240 having a locking groove 250 fitted to the locking protrusion 140 formed on the connector body 120, the terminal position fixing part 200 will be described in detail with reference to FIG. 4. Shall be.

4 is an enlarged view illustrating the terminal position fixing unit illustrated in FIG. 3.

Referring to FIG. 4, the terminal position fixing part 200 according to the present invention serves to fix the position of the terminal line 40 and to insert the terminal line 40 into the connector body 120 in a thin plate shape. May cover, but serves to seal the open surface of the connector body 120.

Terminal position fixing part 200 according to the present invention is made of a plastic material through injection molding.

Terminal position fixing part 200 is divided into two largely, A when a plurality of semi-circular grooves 220 are formed only on one side of the terminal position fixing body 210 by being located outside when coupled to the connector body 120 Located between the type and the A type, there is a B type that a plurality of semicircular grooves 220 are formed on both sides of the body facing each other. In the present invention, the number of the terminal wires 40 inserted into the connector housing 100 is six in total, so that two semi-circular A and two A-types having three semi-circular grooves 220 formed on one side to make six through holes. Although one terminal location fixing part 200 having a B type having a groove 220 is used, the number of B types can be freely increased or decreased according to the number of terminal lines 40 to be inserted, and a semicircular groove formed in each body. The number of 220 can also be changed.

In addition, the diameter of the semi-circular groove 220 may also be enlarged or reduced depending on the diameter according to the type of the terminal line (40).

On the other hand, the surface roughness (surface roughness) of the semi-circular groove 220 is not smooth injection molding, so that a burr generated during injection molding is provided. Therefore, the terminal line 40 inserted into the connector body 120 is in close contact with the through hole formed by the semicircular groove 220 so as to reduce the gap formed in the through hole so that the heat insulating material does not leak.

That is, the semicircular grooves 220 formed in the divided terminal position fixing body 210 of the A type and the B type or the two B types are overlapped to form through holes, which are smoothly removed on the surface of the semicircular groove 220. When the diameter of the through hole is partially smaller than the diameter of the terminal line 40 by the burr which is not, the connector body 140 forms a sealed structure when the terminal line 40 is inserted.

In addition, the frictional force with the terminal wire 40 covered with the cover is increased through the bur so that the terminal wire 40 does not easily come out of the connector housing 100.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, changes, and modifications are possible in the technical field of the present invention without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

As described above, the connector housing having a sealed structure according to the present invention is inserted into both sides of the fixing plate and the fixing plate attached to the inner wall surface in which the polyurethane foam, which is a heat insulating material, is foamed in order to supply power to an electrical component configured outside the insulating material. And a pair of connectors to be connected to the fixing plate to be integrally formed, and the terminal position fixing portion that fixes the terminal line so that the plurality of terminal lines inserted into the connector does not deviate into the shape of the connector cover It is to be sealed from the heat insulating material, but the terminal position fixing part can be divided into a plurality, and the semi-circular grooves are formed in the divided terminal position fixing parts, respectively, so that the through-hole is formed so that the terminal line is in close contact with the connector body. Reprocessing of defective products caused by foam leakage By not doing this, there is an effect of improving productivity.

In addition, there is an effect of reducing the production cost by not using a sponge and a tape, which is a liquid-proof means conventionally used.

Claims (6)

In the connector housing that is embedded in the polyurethane foam insulation foamed between the partition walls inside the product to supply power to the electrical components configured outside the insulation, A fixing plate attached to a wall separating the inside and the outside of the partition wall, the connector plate having a through hole formed in the center of the body; A pair of connector bodies formed integrally with the fixing plate so that terminal lines are connected to both sides of the fixing plate through the connector inserting holes, and a plurality of locking protrusions are formed corresponding to opposite sides of the body; The terminal line inserted into the connector body is fixed so as not to be separated, and when coupled with the connector body is formed so as to cover the open surface of the connector body, a plurality of through-holes are formed so that the terminal line can be inserted Location fixing; Connector housing having a sealed structure, characterized in that comprises a. The method of claim 1, The fixing plate is a connector housing having a sealed structure characterized in that the curved surface is formed in accordance with the bending of the wall surface is attached. The method of claim 1, The connector housing having a sealed structure, characterized in that the core portion for partitioning the inside of the connector body through the partition wall in accordance with the type and number of the terminal line is inserted into the pair of connector body. The method of claim 1, The terminal position fixing part, A terminal position fixing body having a plurality of semicircular grooves formed in a plate shape to cover the open surface of the connector body with a plurality of butt facing each other and formed on one side or opposite sides of the body; A locking plate vertically connected to both ends of the terminal position fixing body and having a locking groove into which the locking projection provided in the connector body is fitted; A support plate for fixing the terminal line inside the connector body such that the terminal line inserted into the through hole formed as the semicircular groove is not separated; Connector housing having a sealed structure, characterized in that comprises a. The method of claim 4, wherein The terminal position fixing portion is composed of injection molding using a plastic material, and the surface of the semi-circular groove formed in the terminal position fixing portion is formed with a burr through the injection molding, and the terminal line inserted into the through hole. The connector housing having a sealed structure characterized in that to close the through-hole more in close contact with. The method of claim 4, wherein The connector housing having a sealed structure, characterized in that the number and diameter of the semi-circular groove formed in the terminal position fixing body is changed depending on the number and diameter of the terminal line.

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