KR20080088894A - Assembly for dummy seal - Google Patents

Abstract

A dummy seal assembly is provided to improve assembling characteristics by allowing a dummy bar to be inserted from anywhere in a front or rear direction of a dummy seal. A dummy seal(60) is made of a flexible material that can be elastically deformed so as to be inserted into a connector housing. A dummy bar(70) is fixed by penetrating through the dummy seal, and includes a stopper plate(74) tightly attached to a front or rear surface of the dummy seal in a state of being combined with the dummy seal. The dummy seal includes a cylindrical dummy seal body(62) formed a long through hole(64) through which the dummy bar is inserted, and a crease portion(68) formed to be protruded from an outer circumferential surface of the dummy seal body. The dummy seal body is formed to be symmetrical to the through hole. A fixing portion is formed at one side of the through hole to allow the dummy bar to be fixed after being inserted. The fixing portion is formed at a middle portion in a lengthwise direction of the through hole.

Description

Assembly for dummy seal

1 is a cross-sectional view showing a state in which a dummy seal according to the prior art is coupled to a connector.

Figure 2 is an exploded perspective view showing a preferred embodiment of the dummy seal assembly according to the present invention.

Figure 3 is a cross-sectional view showing a state in which the dummy seal assembly coupled to the connector according to the present invention.

Explanation of symbols on the main parts of the drawings

40: connector housing 42: terminal seating space

44: seal seating space 46: lance

48: locking projection 50: dummy seal assembly

60: dummy seal 62: dummy seal body

64 through hole 66 fixed part

68: wrinkle portion 70: dummy bar

72: dummy bar body 74: stopper plate

76: hanger head 78: convex portion

The present invention relates to a dummy seal, and more particularly, to a dummy seal assembly mounted on an inside of a connector housing in which a terminal and a waterproof seal are not coupled to perform a waterproof function.

1 is a cross-sectional view showing a state in which a dummy seal according to the prior art is coupled to a connector.

As shown in the drawing, a plurality of terminal seating spaces 4 and seal seating spaces 6 are respectively formed in the connector housing 2 forming the skeleton of the connector. A terminal (not shown) is generally seated in the terminal seating space 4, and a waterproof seal (not shown) is seated in the seal seating space 6 to waterproof the terminal. However, the terminal and the waterproof seal may not be seated in the seating spaces 4 and 6 as necessary. In this case, the dummy seal 20 to be described below is inserted into the seal seating space 6 and seated therein.

In addition, a lance 8 is provided inside the connector housing 2. The lance 8 is a portion where the terminal is inserted and walked. At the front end of the lance (8) is formed a protruding locking projection (10) to substantially hang the terminal.

On the other hand, the dummy housing 10 is coupled to the connector housing (2). The dummy seal 20 serves to prevent moisture from flowing into the connector when the terminal and the waterproof seal are not coupled. The dummy seal body 22 constituting the dummy seal 20 is formed of a flexible material capable of elastic deformation, for example, rubber.

At least one wrinkle portion 24 is formed at one side of the outer circumferential surface of the dummy seal body 22. The wrinkles 24 are elastically deformed when the dummy seal 20 is coupled to the connector housing 2 to serve to fix the dummy seal 20 to the seal seating space 6.

However, the prior art as described above has the following problems.

As shown in FIG. 1, when the connector is energized while the dummy seal 20 is coupled to the connector housing 2, the temperature of the seating spaces 4 and 6 is increased by the heat generated from the terminals. When the temperature of the seating spaces 4 and 6 rises, the internal pressure P also rises, pushing the dummy seal 20 in the direction of the arrow shown in FIG. 1.

Since the dummy seal 20 is made of a flexible material, when the internal pressure P is greater than or equal to a predetermined level, the dummy seal 20 may be separated from the connector housing 2. In other words, the internal pressure (P) is to push the dummy seal 20 while overcoming the elastic force of the wrinkle portion 24 to be in close contact with the seal seating space (6). As such, when the dummy seal 20 is separated from the connector housing 2, the waterproof function of the connector housing 2 is lost, so that moisture may flow into the connector housing 2.

Therefore, an object of the present invention is to solve the problems of the prior art as described above, the dummy seal assembly is a dummy seal assembly that can be more firmly coupled to prevent the dummy seal from being separated from the dummy bar by an external force. To provide.

Another object of the present invention is to provide a dummy seal assembly which can further improve the assemblability.

According to a feature of the present invention for achieving the object as described above, the present invention is a dummy seal formed of a flexible material capable of elastic deformation so as to be inserted into the connector housing; The dummy bar is fixed to penetrate through the dummy seal and includes a dummy bar provided with a stopper plate which is in close contact with the front or rear surface of the dummy seal while being coupled to the dummy seal.

The dummy seal may include a dummy seal body having a cylindrical shape in which a through hole into which the dummy bar is inserted is elongated; It is configured to include at least one wrinkle portion protruding to the outer peripheral surface of the dummy seal body.

The dummy seal body is formed in a shape symmetrical with respect to the through hole.

A fixing part is formed at one side of the through hole so as to be fixed in a state where the dummy bar is inserted, and the fixing part is formed at a middle portion in the longitudinal direction of the through hole.

The dummy bar may include a dummy bar body inserted into the through hole; A stopper plate provided at one end of the dummy bar body and in close contact with the front or rear surface of the dummy seal in a state in which the dummy bar body is coupled to the dummy seal; Is provided at the other end of the dummy bar body is configured to include a hook head portion that is walking while elastically deforming the lance formed in the connector housing.

A portion of the dummy bar body forms a relatively wide convex portion to be fixed to the fixing portion.

The stopper plate is formed in a disk shape in close contact with the entire front or rear of the dummy bar.

According to the present invention, even if the internal temperature rises when the connector is energized and the pressure is applied to the dummy seal, the dummy seal is not separated from the connector housing, thereby improving the reliability of the product. In addition, since the dummy bar can be inserted anywhere in the front or rear direction of the dummy seal, the assemblability is improved.

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

Figure 2 is an exploded perspective view showing a preferred embodiment of the dummy seal assembly according to the present invention, Figure 3 is a cross-sectional view showing a state in which the dummy seal assembly according to the invention seated on the connector.

As shown in these figures, the overall skeleton of the connector is formed by the connector housing 40, the connector housing 40 is generally formed of a synthetic resin material. The terminal seating space 42 is formed inside the connector housing 40.

In addition, a seal seating space 44 is formed in the connector housing 40. The seal seating space 44 is a portion in which the dummy seal 60 to be described below is seated, and is formed to communicate with the terminal seating space 42. In addition, the seal seating space 44 has a relatively larger diameter than the terminal seating space 42.

Although not shown in detail in the drawing, a plurality of seating spaces 42 and 44 are formed in the connector housing 40. In addition, a terminal and a waterproof seal (not shown) are generally mounted in the seating spaces 42 and 44, respectively. However, the terminal and the waterproof seal are not to be seated in each of the seating spaces 42 and 44, and the terminal and the waterproof seal may be seated only in a part of the seating spaces 42 and 44 according to the purpose of the connector. That is, the seating spaces 42 and 44 on which the terminal and the waterproof seal are seated may perform a waterproof function, but moisture may flow into the seating spaces 42 and 44 on which the terminal and the waterproof seal are not seated.

Therefore, the mounting spaces 42 and 44 where the terminal and the waterproof seal are not mounted need a separate configuration to replace them. Thus, the dummy seal assembly 50 to be described below is seated in the seating spaces 42 and 44 to perform a waterproof function.

On the other hand, the inner side of the connector housing 40, the lance 46 is provided. The lance 46 is a cantilever shape capable of elastic deformation. The lance 46 is elastically deformed with one end connected to the connector housing 40. In this figure, the solid line shows the state in which the lance 46 is elastically deformed, and the dotted line shows the state before the lance 46 is elastically deformed. In addition, the front end of the lance 46 is formed by protruding the engaging projection 48 to the hook head portion 76 of the dummy bar 70 to be described below.

The locking protrusion 48 is formed with a locking portion 48a to which the hook head portion 76 is substantially hooked. The locking portion 48a is formed to be orthogonal to the length direction of the lance 46 to maintain the locking state of the hook head portion 76. In addition, the locking projection 48 is formed with a guide portion 48b inclined in the opposite direction of the insertion direction of the dummy bar 70 in the locking portion (48a). The guide portion 48b serves to guide the hook head portion 76 when the dummy bar 70 is inserted so that the lance 46 is elastically deformed.

A dummy seal assembly 50 is coupled to the connector housing 40. The dummy seal assembly 50 is coupled to the terminal seating space 42 and the seal seating space 44. The dummy seal assembly 50 is composed of a dummy seal 60 that is largely seated in the seal seating space 44 and a dummy bar 70 that is hooked to the lance 46. Hereinafter, the configuration thereof will be described in detail.

The dummy seal 60 is coupled to the seal seating space 44 of the connector housing 40 in which the terminal is not inserted, and serves to prevent moisture from flowing into the connector housing 40. The dummy seal body 62 constituting the dummy seal 60 is formed in a substantially cylindrical shape, and is formed of a flexible material capable of elastic deformation. For example, rubber or the like is used as the material of the dummy seal body 62. In the dummy seal body 62, a through hole 64 for inserting the dummy bar 70 is formed to be long. The through hole 64 is formed to communicate with the outside.

The dummy seal body 62 is symmetrically formed with respect to the through hole 64. By having the shape as described above, when the dummy bar 70 is inserted into the dummy seal body 62, the operator can insert the dummy seal body 62 in any direction of the front or rear surface of the dummy seal body 62.

One side of the through hole 64 is formed with a fixing portion 66 to which the convex portion 78 of the dummy bar 70 to be described below is fixed. The fixing portion 66 has a relatively larger diameter than the through hole 64 so that the convex portion 78 may be fixed. The fixing portion 66 is preferably formed in the middle portion with respect to the longitudinal direction of the through hole (64). This is to make the coupling structure of the dummy seal 60 and the dummy bar 70 more firm.

On the other hand, at least one wrinkle portion 68 protrudes from one side of the outer circumferential surface of the dummy seal body 62. The crease portion 68 is a portion in direct contact with the seal seating space 44. The dummy seal 60 is elastically deformed when the dummy seal 60 is coupled to the connector housing 40 so that the dummy seal 60 is sealed. It serves to be fixed to the space (44).

A dummy bar 70 having a bar shape is coupled to the dummy seal 60. The dummy bar 70 is located in the terminal seating space 42 by being hung on the lance 46. As such, the dummy bar 70 is engaged with the dummy seal 60 to be hung on the lance 46 to prevent the dummy seal assembly 50 from being separated from the connector housing 40. Do it.

One end of the dummy bar body 72 constituting the dummy bar 70 is provided with a stopper plate 74 in close contact with the front or rear surface of the dummy seal 60. The stopper plate 74 serves to prevent the dummy seal 60 from being separated by the internal pressure of the connector housing 40 while the dummy seal assembly 50 is coupled to the connector housing 40. . The stopper plate 74 is preferably formed in a disk shape that can be in close contact with the entire front or rear surface of the dummy seal body 62.

Specifically, if the connector is energized while the dummy seal assembly 50 is coupled to the connector housing 40, the internal temperature of the connector housing 40 is increased. Then, the inside of the connector housing 40, that is, the pressure of the seating space (42, 44) is raised to push the dummy seal 60 to the outside. At this time, the front or rear of the dummy seal 60 is caught by the stopper plate 74, so that the dummy seal 60 is not separated from the dummy bar 70.

And, the other end of the dummy bar body 72, that is, the portion corresponding to the opposite side of the end formed with the stopper plate 74, the hook head portion 76 is hooked to the engaging portion 48a of the locking projection 48 Is provided. The hook head portion 76 is formed in a conical shape so that the dummy bar 70 can smoothly move along the guide portion 48b when the dummy bar 70 is inserted into the connector housing 40.

A portion of the dummy bar body 72 protrudes relatively wide to form a convex portion 78. The convex portion 78 is coupled to and fixed to the fixing portion 66 of the dummy seal body 62. The convex portion 78 is preferably formed to be located in the middle portion of the longitudinal section of the dummy seal body 62 in a state in which the dummy seal 60 and the dummy bar 70 are coupled. This is to strengthen the coupling structure of the dummy seal 60 and the dummy bar 70 as described above.

Hereinafter, the operation of the dummy seal assembly 50 according to the present invention having the configuration as described above will be described in detail.

First, the process of assembling the dummy seal assembly 50 will be described.

The dummy seal assembly 50 is formed by inserting the dummy bar 70 into the through hole 64 formed in the dummy seal 60. Since the dummy seal 60 is formed symmetrically with respect to the through hole 64 as described above, the dummy bar 70 may be inserted in either the front or rear direction of the dummy seal 60. . Hereinafter, for convenience of explanation, the surface shown in FIG. 2 is referred to as a front surface. Therefore, there is no restriction in the assembly direction in coupling the dummy bar 70 to the dummy seal 60, so assemblability is improved.

As such, when the dummy bar 70 is inserted into the through hole 64, the dummy bar body 62 formed of a flexible material capable of elastic deformation is elastically deformed, and the dummy bar 70 is coupled. That is, when the inside of the dummy seal body 62 is elastically deformed by the dummy bar 70 and the dummy bar 70 is completely coupled, as shown in FIG. The convex portion 78 is fixed to the fixing portion 66. When the coupling of the dummy bar 70 is completed, the stopper plate 74 is in close contact with the rear surface of the dummy seal 60.

Next, the process of coupling the dummy seal assembly 50 assembled as described above to the connector housing 40 will be described.

The dummy seal assembly 50 is coupled to seating spaces 42 and 44 to which terminals are not coupled. This is because, as described above, when the connector is operated while the seating spaces 42 and 44 are empty, moisture or the like may be introduced from the outside.

The hook head portion 76 of the dummy bar 70 moves along the guide portion 48b of the locking protrusion 48 while the dummy seal assembly 50 is inserted into the seating spaces 42 and 44. As the lance 46 is elastically deformed.

Thus, the lance 46 is initially moved from the state indicated by the dotted line in FIG. 3 to the state indicated by the solid line. When the dummy bar 70 is completely inserted into the terminal seating space 42, the hook head portion 76 is hooked to the locking portion 48a of the locking projection 48. In addition, the wrinkle part 68 of the dummy seal 60 is elastically deformed and seated in the seal seating space 44.

As such, when the connector is energized while the dummy seal assembly 50 and the connector housing 40 are coupled, the temperature of the seating spaces 42 and 44 is increased by the heat generated from the terminal. Since the pressure increases as the temperature of the seating spaces 42 and 44 increases, the internal pressure P acts on the front surface of the dummy seal 60 in the direction of the arrow shown in FIG. 3. In the present invention, since the stopper plate 74 is in close contact with the rear surface of the dummy seal 60, the dummy seal 60 may be slightly pushed toward the stopper plate 74, but not separated from the connector housing 40. do.

The rights of the present invention are not limited to the embodiments described above, but are 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.

In the dummy seal assembly according to the present invention as described in detail above, the following effects can be expected.

First, in the present invention, a stopper plate is provided at one end of the dummy bar coupled to the dummy seal to be in close contact with the front or rear surface of the dummy seal. Therefore, even when the internal temperature rises when the connector is energized and the pressure is applied to the dummy seal, the dummy seal is not separated from the connector housing. As a result, since the coupling relationship between the connector housing and the dummy seal assembly is maintained firmly, the reliability of the product is improved.

In the present invention, the dummy seal structure is formed to be symmetrical with respect to the through hole. Therefore, since the dummy bar can be inserted anywhere in the front or rear direction of the dummy seal, the assemblability is improved.

Claims (7)

A dummy seal formed of a flexible material capable of elastic deformation so as to be inserted into the connector housing; And a dummy bar having a stopper plate fixed through the dummy seal and being in close contact with the front or rear surface of the dummy seal while being coupled to the dummy seal. The method of claim 1, wherein the dummy seal, A dummy seal body having a cylindrical shape in which a through hole into which the dummy bar is inserted is elongated; Dummy seal assembly, characterized in that it comprises at least one wrinkle portion formed to protrude on the outer peripheral surface of the dummy seal body. The method of claim 2, The dummy seal body is characterized in that the dummy seal assembly is formed in a shape symmetrical with respect to the through hole. The method of claim 3, wherein A dummy seal assembly is formed at one side of the through hole so that the dummy bar can be fixed in a state where the dummy bar is inserted, and the fixing part is formed at an intermediate portion in the longitudinal direction of the through hole. The dummy bar according to any one of claims 1 to 4, wherein A dummy bar body inserted into the through hole; A stopper plate provided at one end of the dummy bar body and in close contact with the front or rear surface of the dummy seal in a state in which the dummy bar body is coupled to the dummy seal; And a hook head portion provided at the other end of the dummy bar body and hooked while elastically deforming a lance formed in the connector housing. The method of claim 5, wherein And a portion of the dummy bar body forms a relatively wide convex portion to be fixed to the fixing portion. The method of claim 6, The stopper plate is a dummy seal assembly, characterized in that formed in the shape of a disc in close contact with the entire front or rear of the dummy bar.

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