JPH0334860Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a packing for a connecting case, and particularly to a packing for a connecting case that can reliably prevent mutual separation of connected members.

[Prior art]

Generally, a connection case that is designed to internally connect connection terminals attached to the tips of members to be connected is constructed as shown in FIG. 5.

That is, a connected member 4 is provided with a male connection terminal 5 at its tip in an opening 11 provided in each of connection cases 1 and 2 made of synthetic resin or the like.
and a connected member 4 having a female connection terminal 6 at its tip end are respectively inserted, and a cylindrical rubber member having an annular protrusion on the outer peripheral surface is inserted into the connected members 4, 4. Connecting case packings 10 made of an elastic material such as the above are provided adjacent to both the connecting terminals 5 and 6, respectively.

The connection case packing 10 has a front opening 11.
The male connecting terminal 5 and the female connecting terminal 6 are inserted into the opening 11, and both the connecting terminals 5 and 6 are locked in the opening 11. In order to do this, locking protrusions 15 and 16 that protrude inward are provided, respectively.

Then, when the connection case 1 and the connection case 2 are fitted together via a sealing member 3 made of an elastic body such as rubber, the male connection terminal 5
and the female connection terminal 6 are connected to each other, and
They are respectively locked by the locking protrusions 15 and 16.

Further, due to the sealing performance due to the pressure applied to the sealing member 3 by the connection cases 1 and 2 and the elastic contact of the connection case packing 10 to the inner circumferential surface of the opening 11, water, etc., does not enter the inside of the connection cases 1 and 2. It is designed to prevent intrusion.

Moreover, the mutual separation of the male connection terminal 5 and the female connection terminal 6 is caused by the frictional force between the two connection terminals 5 and 6.
Elastic contact force against the inner circumferential surface of the opening 11 of the connection case packing 10 and the locking protrusions 15 and 16
However, if a strong tensile force is applied to the connected members 4, 4, the male connection terminal 5 and the female connection terminal 6 may be separated. There is.

For this purpose, a gap 12 is provided at each end of the connection cases 1 and 2, and in the gap 12, as shown in FIG. Insert a stopper 13 having a slit 14 slightly wider than the
By making contact with the end surface of the connection case gasket 10, the connection case gasket 10 closes the opening 11.
Even when a strong tensile force is applied to the connected members 4, 4, the male connecting terminal 5 and the female connecting terminal 6 are prevented from being separated from each other.

[Problem that the invention attempts to solve]

However, in the conventional device configured as described above, since the width of the slit 14 formed in the stopper 13 is narrow during assembly work, it is very troublesome to insert the connected members 4, 4. It is.

In this case, if the width of the slit 14 is made wide in order to facilitate the assembly work, the connecting case packing 10 is made of only an elastic material such as rubber, so it is easily deformed, and the connecting members 4, 4 are easily deformed. When a strong tensile force is applied, the terminal deforms and slips through the slit 14 and separates from the opening 11, resulting in the problem that the male connecting terminal 5 and the female connecting terminal 6 are separated from each other. Ta.

The purpose of this invention is to provide a packing for a connection case that is easy to assemble into a connection case, and that also prevents the connection terminals provided on the connected components from separating from each other by preventing them from slipping through the slits. Our goal is to provide the following.

[Means for solving problems]

In order to achieve the above object, this invention is provided in the openings in a pair of connection cases that are joined to each other, and the connected members with connection terminals attached to the tips are inserted through the inside, and the outer peripheral surface is A connecting case seal that seals between the opening and the inner circumferential surface of the opening and prevents the connecting case from protruding from the opening with a stopper provided on the connecting case. A seal portion having low hardness elasticity and consisting of a small diameter portion located on the terminal side and a large diameter portion provided with an annular protrusion that contacts the inner peripheral surface of the opening, and an end of the large diameter portion of this seal portion. It consists of a receiving part that is integrally connected and has high elasticity, and the end face of the small diameter part of the seal part is the end face of the connection terminal, and the end face of the receiving part is the end face of the stopper. The packing for the connection case is characterized in that it is disposed in an abutting state.

The sealing portion having elasticity with low hardness is made of hard rubber, and the receiving portion having elasticity with high hardness is made of resin.

[Effect]

By adopting the above-mentioned means, this idea
The work of assembling it into the connection case can be made easier, it can be prevented from slipping through the slit provided in the stopper and coming off from the opening, and it is possible to reliably prevent the connection terminals provided on the members to be connected from being separated from each other. .

〔Example〕

Embodiments of this invention shown in the drawings will be described below.

Figure 1 shows a longitudinal cross-sectional view of the connection case with the connection case packing according to this invention incorporated.
Further, FIG. 2 shows a side view of the one shown in FIG. 1, and the same members as those in the conventional one are given the same numbers and detailed explanations will be omitted.

Connected members 4, 4 are inserted into the interior of the connecting case packing 10 according to this invention, and connecting terminals 5, 6 are attached to the inserted ends of the connected members 4, 4.

The details of this connection case packing 10 are shown in FIGS. 3 and 4, as shown in FIG. and a receiving portion 18 formed in a cylindrical shape from a highly hard elastic body such as hard rubber or resin, and this receiving portion 18 is integrally molded or bonded to the end surface of the large diameter portion 17a of the seal portion 17. are provided and integrally formed.

Annular protrusions 17c, 17c are provided on the outer peripheral surface of the large diameter portion 17a of the seal portion 17, and annular projections 17d, 17d are provided on the inner peripheral surface, and the connected members 4, 4 inserted therein. The space between them is sealed by annular projections 17d, 17d on the inner peripheral surface, and the space between them and the inner peripheral surface of the opening 11 of the connection cases 1, 2 is sealed by annular projections 17c, 17c on the outer peripheral surface.

Next, the operation of the above will be explained.

First, the members 4, 4 to be connected are inserted through the inside of the connection case packing 10 according to this invention, and the male connection terminal 5 and the female connection terminal 6 are attached to the tips.

The connection case gasket 10, into which the connected members 4, 4 have been inserted as described above, is inserted into the connection cases 1, 2.
After assembling the stoppers 13 to the connection cases 1 and 2, and then combining the connection cases 1 and 2 into one body, the connected members 4 and 4 and the connection cases 1 and 2 The sealing property between the connecting cases 1 and 2 is ensured by the annular protrusions 17c and 17c provided on the sealing part 17 of the connection case packing 10 coming into elastic contact with the inner circumferential surface of the opening 11. Intrusion of water etc. is prevented.

Also, when both connection cases 1 and 2 are combined,
The end face of the small diameter part 17b of the seal part 17 of the connection case packing 10 is the end face of the male connection terminal 5 provided at the tip of the connected member 4, and the female connection terminal 6.
Also, the connection case packing 1
The end face of the receiving portion 18 is located inside the opening 11 while being in contact with the stopper 13.

The receiving portion 18 that comes into contact with the stopper 13 is made of an elastic material with high hardness and is not easily deformed. When force is applied, the receiving portion 18 will not deform and slip through the slit 14, so the slit 1
By increasing the width of 4, assembly work can be made easier.

Moreover, when a strong tensile force is applied to the connected members 4, 4 as described above, the male connection terminal 5, and a female connection terminal 6 are provided, and their end surfaces are in contact with the end surface of the small diameter portion 17b of the seal portion 17, so that the seal portion 1
Since the small diameter portion 17b of 7 is pressed and deformed to provide a buffering effect, the tensile force acting on the receiving portion 18 is reduced, and it is possible to reliably prevent the receiving portion 18 from slipping through the slit 14.

Therefore, the slit 14 side has a highly hard receiving part 18, and the male/female connection terminals 5, 6
Since the side seal portion 17 is a small diameter portion 17b, even if a large tensile force is applied to the connected members 4, 4, the hardness of the receiving portion 18 on the slit 13 side is high, and the connecting terminal 5, 6 side small diameter part 1
By deforming 7b, it can be reliably prevented from slipping through the slit 14, and therefore, separation of the male and female connection terminals can be prevented.

In the embodiment described above, the details of the connection case packing 10 are configured as shown in FIGS. 3 and 4, but the structure is not limited to this, and may be made of a low-hardness elastic body such as rubber or a hard rubber. Alternatively, it is sufficient to integrate it with a high hardness elastic body such as a resin, and make the side of the low hardness elastic body opposite to the high hardness elastic body a small diameter part, and the shape is not limited to the embodiment example. be.

[Effect of idea]

By configuring this idea as described above,
Not all of the tensile force that acts, but only some of the tensile force acts on the slit to slip through, making it difficult to slip through the slit. Therefore, the width of the slit can be widened to facilitate assembly work.

In addition, since the part that comes into contact with the end surface of the connection terminal is easily deformed, even if a large tensile force is applied to the connected member, this prevents it from slipping through the slit, and the connection from the connected member It is also possible to prevent the terminal from falling off.

Therefore, it is possible to reliably prevent the connection terminals provided on the connected members from being separated from each other.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing a connection case incorporating the connection case packing according to this invention, and Fig. 2
The figure is a side view of the one shown in Figure 1, Figure 3 is a front view of the connecting case packing according to this invention, Figure 4 is a longitudinal sectional view, and Figure 5 is a connecting case in which the conventional connecting case packing is incorporated. FIG. 6 is a front view of the stopper used in the one shown in FIG. 1, 2... Connection case, 3... Seal member, 4
... Connected member, 5 ... Male connection terminal, 6 ... Female connection terminal, 10 ... Connection case packing, 1
1...Opening, 12...Gap, 13...Stopper,
14...slit, 15,16...locking protrusion,
17...Seal part, 17a...Large diameter part, 17b...
...Small diameter portion, 17c, 17d...Annular projection, 18...
...Receiving part.

Claims (1)

[Claims for Utility Model Registration] (1) Connected members 4 are provided in openings 11 in a pair of connecting cases 1 and 2 that are joined to each other, and have connecting terminals 5 and 6 attached to their tips. A gasket for a connection case, which is inserted through the connection case, has an outer peripheral surface sealed between the inner peripheral surface of the opening 11, and is prevented from coming out from the opening 11 by a stopper 13 provided on the connection cases 1 and 2. 10, and the packing 10 for the connection case.
is the small diameter portion 1 located on the side of the connection terminals 5 and 6.
7b, and a large diameter portion 17a provided with an annular protrusion 17c that contacts the inner circumferential surface of the opening 11.
It consists of a receiving part 18 which is integrally connected to the end of the large diameter part 17a of the seal part 17 and has high elasticity, and the end surface of the small diameter part 17b of the seal part 17 is connected to the connection terminals 5, 6. and the end face of
Further, the end surface of the receiving portion 18 is connected to the stopper 1.
A gasket for a connection case, characterized in that it is arranged in contact with the end faces of No. 3, respectively. (2) The seal portion 17 having low hardness elasticity is
The packing for a connection case according to claim 1, which is made of hard rubber. (3) The connecting case packing according to claim 1, wherein the receiving portion 18 having high elasticity is made of resin.