KR20100010333A - Waterproof seal - Google Patents

Abstract

The present invention relates to a waterproof seal. Skeleton of the waterproof seal of the present invention penetrates back and forth through the inside of the cylindrical shape is formed with a through-hole 104 wraps a portion of the outer surface of the wire (w), the seal body 102 is inserted into the seal seating space formed in the connector housing is formed do. At least one outer uneven portion 110 is formed to protrude around the outer circumferential surface of the seal body 102 to be in close contact with the inner surface of the seal seating space. One end of the seal body 102 is formed to protrude the connecting neck 120, the connecting neck 120 is formed with a locking projection (130). In the inner uneven portion 106 and the outer uneven portion 110 formed on the inner circumferential surface of the through hole 104, cylindrical first and second portions 108 and 112 are formed by a predetermined thickness. The first attachment portion 108 is connected to a portion of the inner uneven portion 106 and the first connection protrusion 113, the other portion is separated. The second attachment portion 112 is connected to a portion of the outer uneven portion 110 and the second connection protrusion 114, the other portion is separated. Thus, when the first and second attachment parts 108 and 112 are removed from the seal body 102, the thickness of the seal body 102 and the diameter of the through hole 104 are changed. According to the present invention, it is possible to use a connector housing and wires of various sizes with only one waterproof seal, there is an advantage that the utilization of the waterproof seal is improved.

Description

Waterproof Seal {WATERPROOF SEAL}

The present invention relates to a watertight seal, and more particularly, to a watertight seal usable for connector housings and wires of various sizes.

The connector consists of a terminal installed inside an insulating housing. In such a connector, wires are generally connected to the terminals, respectively, and are electrically connected to the outside.

1 is a cross-sectional view illustrating a state in which a waterproof seal according to the prior art is inserted into a connector housing.

1, a plurality of terminal seating spaces 3 and seal seating spaces 4 are formed inside the connector housing 2 forming the skeleton of the connector, respectively. The terminal 5 is generally seated in the terminal seating space 3, and the waterproof seal 6 coupled to the terminal 5 is seated in the seal seating space 4.

The waterproof seal 6 is formed by the seal body 7 in appearance and skeleton. The seal body 7 has a substantially cylindrical shape and is formed of a flexible material capable of elastic deformation. For example, rubber, silicone, or the like is used as the material of the seal body 7.

The seal body 7 is formed with a through hole 8 through which the electric wire w is inserted. An inner circumferential rib (not shown) is formed on the inner circumferential surface of the through hole 8. In the drawing, the inner circumferential rib is pressed against the outer circumferential surface of the wire w, so that the inner circumferential rib can be considered as the outer circumferential surface of the electric wire w. The inner circumferential rib is compressed to the outer circumferential surface of the electric wire w inserted into the through hole 8 to maintain airtightness.

At least one protrusion 10 surrounding the outer circumferential surface of the seal body 7 is formed to protrude. The protrusion 10 is in close contact with the inner surface of the connector housing 2 to prevent moisture from flowing into the connector housing 2.

One end of the seal body 7 is formed to protrude the connecting neck (11). The connecting neck 11 is a portion where the insulation barrel 5 'of the terminal 5 is coupled. One end of the connecting neck 11 is formed with a locking projection (12). The locking projection 12 serves to prevent the insulation barrel 5 'from being separated from the connecting neck 11.

The waterproof seal 6 having such a configuration is in close contact with the outer circumferential surface of the electric wire w in which the inner circumferential rib 9 inside the waterproof seal 6 is inserted into the through hole 8 while being installed in the connector housing 2. The water is prevented from entering the water seal 6 through the wire (w). The at least one protrusion 10 formed on the outer circumferential surface of the seal body 7 is elastically deformed when the waterproof seal 6 is coupled to the connector housing 2 so that the seal seating space 4 of the connector housing 2 is provided. It is closely adhered to the inner surface and plays a waterproof role.

In this case, the waterproof seal 6 should be the most suitable waterproof seal 6 according to the size of the connector housing 2 and the wire (w).

However, the waterproof seal according to the prior art has the following problems.

The waterproof seal 6 has a thickness of the seal body 7 and a diameter of the through hole 8. Thus, the connector housing 2 and the wire w to be used for the waterproof seal 6 are also predetermined. The watertight seal 6 is made precisely to the size of the connector housing 2 and the wire w. Thus, if a waterproof seal having a different size is mounted on the connector housing 2 or a waterproof seal provided with a through hole having a diameter different from the wire diameter is used, the deterioration of the waterproof performance is natural, and the connector housing 2 is installed. Great damage can also be caused to the device.

And, the waterproof seal 6 fixed in size is limited in use. Therefore, there is a problem in that the manufacturing cost is increased due to the waterproof seal of various dimensions depending on the diameter of each wire or the dimensions of the housing.

An object of the present invention is to solve the above problems, it is possible to be mounted in a connector housing of various sizes and to ensure that the waterproof function is performed even if the wire having a different diameter is inserted.

According to a feature of the present invention for achieving the above object, a seal body which surrounds a portion of the outer surface of the electric wire in a cylindrical shape through which the through hole is formed back and forth, and inserted into the seal seating space formed in the connector housing; At least one inner uneven portion and an outer uneven portion formed around the outer circumferential surface and the inner circumferential surface of the seal body to be in close contact with the inner surface of the seal seating space or the outer surface of the wire; At least one of the inner concave-convex portion and the outer concave-convex portion is formed in a shape corresponding to the shape of the concave-convex portion and the outer portion;

The inner back portion and the outer back portion are connected to a portion of the inner uneven portion and the outer uneven portion by a connecting protrusion, and the other portions are formed to be separated.

The connecting projection is formed in a ring shape surrounding the same position around the inner and outer appendages.

The connecting protrusions have a rod shape and are formed intermittently along the circumferences of the inner and outer back portions.

When the connecting protrusion is formed intermittently, a virtual line connecting the connecting protrusion is formed to form a circle or a spiral shape.

The connecting protrusion is formed at a position outside the best ends of the inner uneven portion and the outer uneven portion.

The connecting protrusion is formed with a cutting recess such that a portion connected to the inner uneven portion and the outer uneven portion is relatively narrow in width. The cutting recess is formed at an acute angle smaller than 90 °.

The inner pad portion and the outer pad portion are formed to have the same or different thicknesses.

One end of the seal body further comprises a connecting neck formed to protrude in a state in which the through hole extends and a locking protrusion formed at the other end of the connecting neck.

According to the present invention, in the seal body forming the appearance and skeleton of the waterproof seal, the inner uneven portion on the inner circumferential surface of the through hole or the outer uneven portion surrounding the outer circumferential surface of the seal body is connected to the first and second connecting protrusions and the other part thereof. The part is provided with separate first and second back portions, and the operator can selectively remove the first and second back portions, and the size of the waterproof seal varies depending on the size of the connector housing or the wire. Since it can be changed, the effective use of the waterproof seal is possible.

In addition, since the size of the waterproof seal can be varied, the waterproof seal can be used even if the size of the connector housing or the wire is changed, so that the waste of the waterproof seal can be eliminated.

Hereinafter, the configuration of a preferred embodiment of a waterproof seal according to the present invention will be described in detail with reference to the drawings.

2 is a cross-sectional perspective view of a configuration of a preferred embodiment of a waterproof seal according to the present invention, Figure 3 is a cross-sectional view showing various aspects of the size of the waterproof seal according to the present invention.

First, referring to Figure 2, the seal body 102 forms the appearance and skeleton of the waterproof seal 100. The seal body 102 is formed in a cylindrical shape, a flexible material capable of elastic deformation. For example, rubber, silicone, or the like is used as the material of the seal body 102.

The seal body 102 has a through hole 104 through which the electric wire w is inserted to pass through the inside back and forth. The inner uneven portion 106 is formed on the inner circumferential surface of the through hole 104. The inner concave-convex portion 106 is formed with a cylindrical first attachment portion 108 having a predetermined thickness. The first attachment portion 108 serves to change the diameter (D ', Figure 3) of the through hole 104. The first attachment portion 108 is formed to the connecting neck portion 120 and the locking projection 130 described below. The first attachment part 108 is connected to a predetermined portion of the inner circumferential surface of the inner uneven portion 106 and the first connection protrusion 113, and the remaining part is separated from the inner circumferential surface of the inner uneven portion 106. The first connection protrusion 113 is formed in a ring shape by surrounding the circumference of the first attachment portion 108 at an approximately intermediate position in the length of the entire through hole 104. The position of the first connecting protrusion 113 may be formed in the middle so that the first attaching portion 108 may be easily removed when the first attaching portion 108 is pulled from both ends of the through hole 104. To make it work. In addition, the first connection protrusion 113 may be formed at a portion deviating from the contact surface that the wire directly contacts when the first attachment portion 108 is removed. In more detail, the first connection protrusion 113 is formed at a position outside the protruding top end of the inner concave-convex portion 106. This is to increase the adhesion even when the first connecting protrusion 113 is not completely removed when the first attachment portion 108 is removed. The inner concave-convex portion 106 including the first attaching portion 108 having such a configuration is compressed to the outer circumferential surface of the electric wire w inserted into the through hole 104 to maintain airtightness.

At least one outer uneven portion 110 surrounding the outer circumferential surface of the seal body 102 is formed to protrude. The outer uneven portion 110 is formed with a second cylindrical portion 112 having a predetermined thickness. The second attachment portion 112 serves to change the thickness (D, FIG. 3) of the seal body 102. The second attachment portion 112 is connected to a predetermined portion of the outer uneven portion 110 and the second connection protrusion 114, and the remaining portion is separated from the outer circumferential surface of the outer uneven portion 110. The second connection protrusion 114 is formed in a ring shape by surrounding the circumference of the second attachment portion 112 at an approximately intermediate position in the length of the entire outer uneven portion 110. The position of the second connection protrusion 114 is formed in the middle so that the second attachment portion 112 can be easily removed when the second attachment portion 112 is pulled from both sides. In addition, the second connection protrusion 114 may be formed at a portion deviating from the contact surface in which the inner surface of the connector housing directly contacts when the second attachment portion 112 is removed. In more detail, the second connection protrusion 114 is formed at a position deviating from the protruding top end of the outer uneven portion 110. This is to increase the adhesion even when the second connecting protrusion 114 is not completely removed when the second attachment part 112 is removed. The outer concave-convex portion 110 including the second attaching portion 112 of such a configuration is in close contact with the inner surface of the connector housing and serves to prevent water from flowing into the connector housing.

One end of the seal body 102 is formed to protrude the connection neck 120. The connecting neck 120 is a portion that is coupled to the insulation barrel of the terminal (not shown). One end of the connecting neck 120 is a locking projection 130 is formed. The locking protrusion 130 is formed to protrude further from the connecting body 120 to the outside than the seal body 102. The locking protrusion 130 serves to prevent the insulation barrel from being separated from the connection neck 120.

Hereinafter, a process of using the waterproof seal according to the present invention will be described in detail with reference to the accompanying drawings. The waterproof seal 100 of the present embodiment has a thickness D of the seal body 102 or a diameter of the through hole 104 as at least one of the first and second recesses 108 and 112 is removed. (D ') is changed and used.

This will be described with reference to FIGS. 3A to 3D.

First, FIG. 3A shows the waterproof seal 100 in a state where the first and second attachment parts 108 and 112 are not removed.

When the electric wire is inserted into the through hole 102 of the waterproof seal 100 of Figure 3a, the electric wire is crimped by the first attachment portion 108 formed inside the waterproof seal 100 to the waterproof seal through the wire ( 100) The penetration of moisture into the interior is prevented. At this time, the first attachment portion 108 and the inner uneven portion 106 is in close contact with each other. In addition, when the waterproof seal 140 is coupled to the connector housing, the outer concave-convex portion 110 and the second hem portion 112 are in close contact with each other, and the second hem portion 112 is also formed on the inner surface of the seal seating space. Close contact. This prevents the inflow of moisture into the interior of the connector housing.

Next, FIG. 3B shows the waterproof seal in which the first attachment portion 108 is intact and the second attachment portion 112 is removed. The waterproof seal of FIG. 3B may be used when a connector housing larger than the size of the connector housing used in FIG. 3A is used and the wire is not changed in size. In order to mount the waterproof seal 140 on the connector housing, the thickness of the seal body 102 needs to be changed to be smaller by removing the second attachment part 112.

As can be seen in FIG. 3A, the second ridge portion 112 is formed on an outer circumferential surface of the outer uneven portion 110. The second attachment portion 112 is only partially coupled to the outer circumferential surface of the outer uneven portion 110 by a second connecting protrusion 114 in the middle, and the remaining portion is separated.

In this state, both ends of the second backing portion 112 are pulled. Then, the second attachment portion 112 is torn in both directions with respect to the second connecting protrusion 114 by external force applied to both ends of the second attachment portion 112. Since the second connection protrusion 114 is torn, the second attachment portion 112 is completely removed from the outer uneven portion 110. This state is shown in FIG. 3B. That is, FIG. 3B shows that the entire thickness of the waterproof seal 140 is smaller than the thickness D in FIG. 3A by removing the second attaching part 112.

Next, FIG. 3C shows the watertight seal in which the second attachment portion 112 remains and the first attachment portion 108 is removed. The waterproof seal of FIG. 3C may be used when the size of the connector housing used in FIG. 3A is the same and the diameter of the wire is larger. In order to insert such an electric wire into the waterproof seal, the diameter of the through hole 104 formed in the waterproof seal must be larger by removing the first attachment portion 108.

As shown in FIG. 3A, the first ridge 108 is formed on the outer circumferential surface of the inner uneven portion 106. In addition, the first attachment part 108 is also partially coupled to the inner concave-convex portion 106 by the intermediate first connection protrusion 113, and the remaining part is separated.

From this state, both ends of the first buckling portion 108 located in the through hole 104 are pulled out. Then, the first attachment part 108 is torn in both directions with respect to the first connecting protrusion 113 by external force applied to both ends of the first attachment part 108. When the first connection protrusion 113 is torn, the first attachment portion 108 is completely removed from the inner uneven portion 106. A state in which the first attachment portion 108 is completely removed from the through hole 104 is illustrated in FIG. 3C. That is, FIG. 3C shows that the diameter of the through hole 104 is larger than the diameter D 'in FIG. 3A by removing the first attachment portion 108. Therefore, even if the wire having a larger diameter than the wire used in FIG. 3A is inserted into the through hole 104, the wire is compressed by the inner concave-convex portion 106 formed in the through hole 104 so that the waterproofing is performed through the wire. Penetration of moisture into the seal 100 is prevented.

Next, FIG. 3D illustrates a case where the first and second recesses 108 and 112 are removed from the waterproof seal 100 of FIG. 3A.

The waterproof seal of FIG. 3D can be used when the size of the connector housing is larger and the wire diameter is larger. In this case, the first backing part 108 and the second backing part 112 are removed in the same manner as described above. The state where the first and second recesses 108 and 112 are removed is illustrated in FIG. 3D.

As such, since the first and second attachment parts 108 and 112 can be selectively removed, the total thickness of the waterproof seal and the diameter of the through hole can be changed according to the connector housing and the wire size. One waterproof seal can be used for various sizes of connector housings and wires.

Figure 4 shows a detailed configuration of the connecting projection used in the waterproof seal according to the present invention. As described above, the connection protrusions 113 and 114 serve to connect the first and second recesses 108 and 110 to the inner concave-convex portion 106 and the outer concave-convex portion 110. . Therefore, the first and second recesses 108 and 110 are easily removed from the inner concave and convex portions 106 and the outer concave and convex portions 110, and the inner concave and convex portions 106 and the outer side are removed. It is important that the surface of the uneven portion 110 is clean.

To this end, cutting grooves 115 are formed such that the ends of the connection protrusions 113 and 114, that is, the portions connected to the inner concave-convex portion 106 and the outer concave-convex portion 110 are relatively narrow in width. And the angle (theta) of the cutting groove 115 is formed at an acute angle smaller than 90 degrees. By doing so, when removing the additional parts 108 and 110, stress is concentrated in the cutting recess 115, so that the irregularities 106 and 110 can be easily removed. In addition, the tip width of the connecting protrusions 113 and 114 is also formed to be relatively narrower than the rear end connected with the adding parts 108 and 110, so that a part of the adding parts 108 and 110 is uneven part 106 ( It can be removed without remaining on the surface of 110).

Meanwhile, although not shown in the drawing, the first connecting protrusion 113 or the second connecting protrusion 114 may have a rod shape, and the first adding part 108 and the second adding part 112 or the inner uneven part 106 may be formed. ) May be formed intermittently along the circumference of the outer uneven portion 110. That is, the attachment parts 108 and 112 are connected to the seal body 102 using a plurality of connection protrusions 113 and 114. At this time, the imaginary line connecting the intermittently formed connecting protrusions 113 and 114 may form a circle or a spiral shape. By doing so, both ends and the middle portions of the first and second recesses 108 and 112 are connected to the inner concave-convex portion 106 and the outer concave-convex portion 110 and the connecting protrusions 113 and 114. The shape is connected. Then, even if the waterproof seal 100 is not used for a long time, the first attachment portion 108 and the second attachment portion 112 are prevented from easily falling off from the seal body 102.

The scope of the present invention is not limited to the embodiments described above, but is defined by the claims, and various changes and modifications can be made by those skilled in the art within the scope of the claims. It is self evident.

That is, in the illustrated embodiment, the second attachment part 112 is formed only on the seal body 102, but may be formed to extend to the connection neck part 120. That is, corresponding to the structure of the inner circumferential surface of the connector housing in contact with the connecting neck portion 120 it is possible to form an additional portion.

In addition, in the present invention, the thicknesses of the first and second attachment parts 108 and 112 may be designed to be different from each other. For example, the thickness of the first overhang portion 108 may be thicker than the thickness of the second overhang portion 112, and the thickness of the second overhang portion 112 opposite to the first overhang portion 108 may be increased. It may be thicker than its thick. In this case, the present invention can be applied to connector housings and electric wires having more various sizes.

In addition, the present invention is not necessarily applied to the configuration of the seal body 102, the connection neck portion 120, the locking projection 130, the waterproof seal, the present invention can also be applied to the waterproof seal consisting of only the seal body (102). have. At this time, the inner body uneven portion 106 and the outer uneven portion 110 is formed in the seal body (102).

1 is a cross-sectional view showing a main part of a state in which a waterproof seal according to the prior art is inserted into a connector housing;

Figure 2 is a cross-sectional perspective view showing the configuration of a preferred embodiment of a waterproof seal according to the present invention.

3 is a cross-sectional view of an embodiment in which the size of the waterproof seal according to the present invention is changed.

Figure 4 is a detailed configuration of the connecting projection used in the waterproof seal according to the present invention.

* Description of the symbols for the main parts of the drawings *

100: waterproof seal 102: seal body

104: through hole 106: inner uneven portion

108: first back portion 110: outer uneven portion

112: second attachment portion 113: the first connecting projection

114: second connecting protrusion 115: cutting groove

120: connection neck 130: protrusion

Claims (10)

A seal body that penetrates back and forth inside and surrounds a part of the outer surface of the electric wire in a cylindrical shape and is inserted into a seal seating space formed in the connector housing; At least one inner uneven portion and an outer uneven portion formed around the outer circumferential surface and the inner circumferential surface of the seal body to be in close contact with the inner surface of the seal seating space or the outer surface of the wire; And at least one of the inner uneven portion and the outer uneven portion of the inner uneven portion and the outer uneven portion formed in a shape corresponding to the uneven portion shape. The method of claim 1, The inner back portion and the outer back portion are connected to a portion of the inner concave portion and the outer concave portion with a connecting protrusion, and the other portion is a waterproof seal, characterized in that formed separately. The method of claim 2, The connecting projection is a waterproof seal, characterized in that formed in a ring shape surrounding the same position around the inner and outer appendages. The method of claim 2, Waterproofing seals characterized in that the connecting projections are rod-shaped and formed intermittently along the circumference of the inner and outer back portion. The method of claim 4, wherein When the connecting projection is formed intermittently, the waterproof seal characterized in that the virtual line connecting the connecting projection is formed to form a circle or spiral shape. The method according to any one of claims 2 to 5, The connecting projection is a waterproof seal, characterized in that formed in a position outside the best end of the inner uneven portion and the outer uneven portion. The method according to any one of claims 2 to 5, The connecting protrusion is a waterproof seal, characterized in that the cutting groove is formed so that the portion is connected to the inner uneven portion and the outer uneven portion is formed relatively narrow. The method of claim 7, wherein The cutting groove is waterproof seal, characterized in that formed at an acute angle of less than 90 °. The method according to any one of claims 1 to 5, The inner seal portion and the outer seal portion is waterproof seal, characterized in that the thickness is formed the same or different from each other. The method of claim 1, Waterproof seal, characterized in that it further comprises a connecting neck formed in one end of the seal body protruding in the extended state and the engaging projection formed on the other end of the connecting neck.

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