JP5437653B2 - Resin filled connector - Google Patents

Description

  The present invention relates to a resin-filled connector configured to fill a connector housing with a resin material so as to be waterproof or oil-proof.

FIG. 5 shows a conventional example of a resin-filled connector, which is also disclosed in Patent Document 1.
The resin-filled connector 41 includes a synthetic resin female connector housing 42 and a synthetic resin terminal in which a flat tab portion (electrical connection portion) 44 of a male terminal 43 is press-fitted and fixed inside the connector housing 42. A synthetic resin alignment correction member having a holder (inner plate) 45 and an insertion hole 46 for alignment correction with respect to the tab portion 44, is slidable in the longitudinal direction of the tab portion 44, and is locked and fixed to the terminal holder 45. 47.

A terminal holder assembly 49 is accommodated in the chamber portion 48 of the connector housing 42, and the electric wire 50 crimped to the terminal 43 is connected to the hole portion of the rubber plug (packing) 52 in the insertion space 51 from the terminal holder 45 (see FIG. (Not shown).
A thermoplastic epoxy resin material 54 is filled between the terminal holder 45 and the bottom wall 53 and in the insertion space 51, and the periphery of the electric wire 50 in the resin-filled connector 41 is liquid-tight.

  When the epoxy resin material 54 is filled in the connector housing 42, the terminal holder assembly 49 is accommodated in the connector housing 42 as shown in FIG. The epoxy resin material 54 is injected into the connector housing 42 in a state in which the lower end of the connector housing 42 is closed with the 52 attached.

  The epoxy resin material 54 is filled in the space below the base wall 56 from the gap 55 between the inner wall in the connector housing 42 and the alignment correction member 47 and the gap (not shown) between the terminal holder 45.

JP 2001-126802 A

  However, the epoxy resin material 54 fills the space below the base wall 56 from the gap 55 between the inner wall in the connector housing 42 and the alignment correction member 47 and the gap (not shown) between the terminal holder 45. Therefore, the filling speed from the portion with the large gap was fast, and the filling speed at the portion with the small gap was slow.

  In addition, the filling position is not determined which part of the connector housing 42, and when the epoxy resin 54 is poured manually, the filling position is not constant by the operator. Then, the spread of the epoxy resin material 54 into the connector housing 42 may not be made uniform. For this reason, there are problems such as unevenness in the filling amount, filling in order from the bottom, and formation of cavities and bubbles around the electric wires 50, and the filling work is troublesome.

  An object of the present invention is to solve the above-mentioned problems, and a resin material such as an epoxy resin material filled in a connector housing can be uniformly filled in the connector housing, and the efficiency of the filling operation can be improved. An object of the present invention is to provide a resin-filled connector.

The above object of the present invention is achieved by the following configurations.
(1) a terminal holder assembly including a terminal holder and an external connection terminal mounted in a terminal accommodating chamber of the terminal holder;
A connector housing that houses the terminal holder assembly;
With
In a state where the terminal holder assembly is accommodated in the connector housing, a resin-filled connector that fills and solidifies the resin material in the connector housing,
An injection port for injecting the resin material into the connector housing into the terminal holder,
An injection promoting part for promoting injection of the resin material injected from the injection port;
Is provided,
The injection port is provided to open to the end surface of the terminal holder on the terminal protruding side,
Furthermore, a part of the outer surface of the terminal holder is exposed, and includes a plurality of terminal locking members that lock the external connection terminals attached to the terminal storage chambers so that they cannot be pulled out.
Between the terminal locking members adjacent to each other at substantially the center, the injection port and the injection promoting portion are formed,
The resin-filled connector, wherein the resin material injected from the injection port flows toward the bottom of the connector housing by the injection promoting portion and is filled in the connector housing.

(2) The above (1), wherein the injection port and the injection promoting part are provided on the same straight line along the injection direction of the resin material at a substantially central part of one side surface of the terminal holder. ) Resin-filled connector as described in.

According to the configuration of (1) above, the resin material injected from the injection port flows toward the bottom of the connector housing by the injection promoting portion, and thus is injected into the connector housing without stagnation. Therefore, the efficiency of the injection work can be improved. In addition, cavities and bubbles are not generated in the filled resin, liquid-tightness can be ensured, and appropriate strength can be obtained.
Further, according to the configuration of (1), since the injection port and the injection promoting portion are formed between the terminal locking members adjacent to each other at the substantially center, the resin material is uniformly diffused from the substantially center. , Can prevent uneven diffusion.

  According to the configuration of (2) above, the resin material injected from the injection port has the injection port and the injection accelerating portion provided on the same straight line along the injection direction of the resin material at the substantially central portion of the terminal holder assembly. Therefore, it can diffuse uniformly in the connector housing, and uneven diffusion can be prevented.

  According to the resin material-filled connector of the present invention, since the inlet and the injection promoting portion are provided in the terminal holder, the resin material injected from the inlet is uniformly diffused in the connector housing without staying. Due to the uniform diffusion and injection promotion of the resin material, the resin material can flow well toward the bottom, reducing uneven diffusion and increasing the efficiency of the injection operation.

  In addition, the resin-filled connector in which the resin material does not generate cavities or bubbles and the resin material is solidified not only improves the waterproof and oilproof effects, but also improves the strength.

It is a top view which shows the structure of the resin filling connector which is embodiment of this invention. It is a perspective view which shows the structure of a terminal holder. It is a perspective view which shows the structure of a connector housing. It is sectional drawing of the resin filling connector which shows the form of resin filling. It is sectional drawing which shows the structure of the conventional resin filling connector.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a resin-filled connector according to the present invention will be described in detail with reference to the drawings.

  1 is a plan view showing a configuration of a resin-filled connector according to an embodiment of the present invention, FIG. 2 is a perspective view showing a configuration of a terminal holder, FIG. 3 is a perspective view showing a configuration of a connector housing, and FIG. It is sectional drawing which shows the state which accommodated the terminal holder.

  The resin-filled connector 1 according to this embodiment includes a terminal holder assembly 5 that accommodates an external connection terminal (not shown) in a terminal accommodation chamber 3 of a terminal holder 10, and a connector housing 7 that accommodates the terminal holder assembly 5. In the state in which the terminal holder assembly 5 is accommodated in the connector housing 7, the resin material 9 such as an epoxy resin material is filled and solidified to integrate the terminal holder assembly 5 and the connector housing 7. It has a configuration.

  As shown in FIG. 2, the terminal holder assembly 5 is configured by assembling an external connection terminal having a wire connected in advance into a terminal holder 10 in which a synthetic resin is molded into one block.

  That is, the terminal holder 10 is provided with a terminal accommodating chamber 3 as shown in FIG. 4, and an external connection terminal (none of which is shown) is accommodated in the terminal accommodating chamber 3. In the resin-filled connector 1 shown in the present embodiment, the mating connector A is fitted as shown in FIG. 4, but by fitting the external connection terminals in the terminal accommodating chamber 3 as described above, the mating connector A is fitted. The terminal portion B connected to the mating connector A protrudes as shown by an imaginary line at the mating position.

  On the other hand, as shown in FIG. 2, longitudinal protective ribs 11a to 11f for protecting a terminal locking member (lance) 4 described later are formed on the outer surface of the terminal holder 10, and the protective ribs 11a to 11c are formed. One end is connected to the connecting member 13 a and each other end is connected to the surface 15 of the terminal holder 10.

  An injection port 17 having a gap G is provided between the connecting members 13a and 13b, and an injection promoting portion 19 is provided so as to be collinear with the injection port 17. Here, the injection promoting part 19 is formed on an inclined surface. The resin material 9 is injected into the connector housing 7 from the injection port 17 and flows toward the bottom of the connector housing 7 by the injection promoting portion 19.

  The configuration of the injection port 17 and the injection promoting portion 19 and the injection operation of the resin material 9 will be described in detail later with reference to FIG. A substantially U-shaped lock arm 21 is provided in the vicinity of the injection promoting portion 19. The terminal holder 10 is fixed to the connector housing 7 by the lock arm 21 being locked by a locking claw (not shown) provided in the connector housing 7.

  Eight terminal insertion holes 23 communicating with the terminal accommodating chamber 3 are formed in the portion of the terminal holder 10 opposite to the lock arm 21. Resin circulation holes 27 are formed on both sides of the terminal insertion hole 23. A substantially U-shaped guide plate 25 for connector fitting is formed along each terminal insertion hole 23, and nine terminal insertion holes 23 are formed on the back side thereof as shown in FIG. Has been.

  The guide plate 25 performs a guide action for preventing erroneous insertion when the mating connector A is fitted to the resin-filled connector 1.

Next, the connector housing 7 will be described with reference to FIG.
The connector housing 7 is integrally formed of synthetic resin, and is basically formed in a box body having one end opened. The terminal holder assembly 5 is accommodated in the hollow portion 31 formed by the housing body 29.

  A reinforcing rib 33, a flange-shaped fixing portion 35 for attaching the resin-filled connector 1 to another device, a support shaft 36, and the like are integrally formed on the outer surface of the housing body 29. Also, ribs 37 are integrally formed in the hollow portion 31, but these ribs 37 form a gap between the terminal holder assembly 5 and the inner wall surface of the housing main body 29 so as to dispose the resin material 9. It has a function of smoothly circulating and a function of reinforcing the housing body 29.

  One end of the connector housing 7, that is, the side on which the hollow portion 31 is formed is formed in a substantially rectangular opening, but the other end is formed in a cylindrical body 39, and the end is formed in a circular opening 39a.

  And in the state which accommodated the connection terminal not shown in each terminal storage chamber 3 of the terminal holder 10, ie, the state comprised in the terminal holder assembly 5, it accommodates in the connector housing 7, and shows by an imaginary line in FIG. Thus, the opening 39a is closed by the rubber plug 39b. Although not shown in the figure, the rubber plug 39b is formed with an insertion hole through which the electric wire connected to each connection terminal is inserted, and when the opening 39a is closed by the rubber plug 39b, the electric wire It is led out of the connector housing 7 through the insertion hole.

  Next, the filling operation of the resin material 9 in this embodiment will be described. Since the resin material 9 at the time of injection is liquid, the injection direction of the resin material 9 is shown by an arrow 9a.

  When injecting the resin material 9, an injection nozzle (not shown) is inserted into the injection port 17 from the gap G shown in FIG. 2, and the resin material 9 is injected into the injection port 17 as indicated by an arrow 9a in FIG. As shown in FIG. 4, an injection promoting portion 19 having a downward gradient (tapered) toward the outside of the terminal holder assembly 5 is formed at the lower end of the inlet 17. The substantially U-shaped lock arm 21 is composed of a pair of arm portions 21a and a connecting portion 21b, and a space is formed between the pair of arm portions 21a.

  Accordingly, the injected resin material 9 is changed in the flow direction obliquely downward in the tapered injection promoting portion 19, passes between the pair of arm portions 21 a, and accumulates at the bottom portion in the connector housing 7.

  If the injection promoting portion 19 is not an inclined surface but a surface orthogonal to the resin injection direction, the resin material 9 stays in the lower portion of the injection port 17. However, by forming an inclined surface as the injection promoting part 19 as in the present embodiment, the resin material 9 naturally flows downward due to pressure and gravity, and the injection is promoted.

  The amount of the resin material 9 accumulated in the connector housing 7 is gradually increased by continuing the injection of the resin material 9, and the liquid level of the resin material 9 is gradually increased. Further, by continuing the injection of the resin material 9, as shown by the arrow 9a in FIG. 4, the resin material 9 is formed in the terminal accommodating chamber 3, between the gap g formed between the connector housing 7 and the terminal holder 3, or the like. It will be full.

  The connection terminal accommodated in the terminal accommodating chamber 3 is locked by the terminal locking member 4 provided so as to protrude into the terminal accommodating chamber 3, and the locking is loosened even if the resin material 9 is filled. There is no such thing. Then, the injection of the resin material 9 is stopped when the surface of the resin material 9 rises to near the end surface 5a of the terminal holder assembly 5, for example.

  What should be noted in the injection operation of the resin material 9 is that the injection port 17 is formed at a substantially central portion of one side surface of the terminal holder assembly 5 as shown in FIGS. For this reason, the resin material 9 injected from the injection port 17 is uniformly diffused to the left and right of the injection port 17.

  Incidentally, if the resin material is injected using the gap X between the terminal holder assembly 5 and the connector housing 7 shown in FIG. 1, unevenness of the diffusion of the resin material 9 may occur. However, in the configuration of this embodiment, the diffusion of the resin material 9 can be made uniform.

  Further, in the present embodiment, the resin material 9 accumulated in the connector housing 7 is gradually accumulated from the lower part to the upper part of the connector housing 7 as the resin material 9 is continuously injected. For this reason, a cavity and a bubble do not generate | occur | produce in the resin material 9 at the time of injection | pouring.

Next, by solidifying the injected resin material 9, the terminal holder assembly 5 and the connector housing 7 are integrated, and the resin-filled connector 1 is obtained. In the resin-filled connector 1, not only the gap in the connector housing 7 is blocked by the resin material 9, but also no voids or bubbles are mixed in the solidified resin material 9, so that the waterproof and oilproof effects are improved. , The strength can also be improved.
Furthermore, since the injection of the resin material 9 is performed without stagnation, the workability of the injection work is improved.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimension, numerical value, form, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

For example, in the embodiment, a thermoplastic epoxy resin is applied as the resin material 9, but any material can be used as long as it is cured from a softened state in a fluid state.
The connector housing 7 may be a cylinder.

DESCRIPTION OF SYMBOLS 1 Resin filling connector 3 Terminal storage chamber 5 Terminal holder assembly 7 Connector housing 9 Resin material 10 Terminal holder 11a-11f, 33, 37 Protection rib 13a, 13b Connecting member 15 Surface 17 Inlet 19 Injection promotion part 21 Lock arm 23 Terminal Insertion hole 25 Guide plate 29 Housing body 31 Hollow part 35 Fixing part 39 Cylindrical body 39a Opening part 39b Rubber plug G, g Gap A Mating connector B Terminal part

Claims (2)

A terminal holder assembly including a terminal holder and an external connection terminal mounted in a terminal accommodating chamber of the terminal holder;
A connector housing that houses the terminal holder assembly;
With
In a state where the terminal holder assembly is accommodated in the connector housing, a resin-filled connector that fills and solidifies the resin material in the connector housing,
An injection port for injecting the resin material into the connector housing into the terminal holder,
An injection promoting part for promoting injection of the resin material injected from the injection port;
Is provided,
The injection port is provided to open to the end surface of the terminal holder on the terminal protruding side,
Furthermore, a part of the outer surface of the terminal holder is exposed, and includes a plurality of terminal locking members that lock the external connection terminals attached to the terminal storage chambers so that they cannot be pulled out.
Between the terminal locking members adjacent to each other at substantially the center, the injection port and the injection promoting portion are formed,
The resin-filled connector, wherein the resin material injected from the injection port flows toward the bottom of the connector housing by the injection promoting portion and is filled in the connector housing. The said injection port and the said injection | pouring acceleration | stimulation part are provided in the substantially straight part in the substantially center part of the one side of the said terminal holder along the injection | pouring direction of the said resin material, The Claim 1 characterized by the above-mentioned. Resin filled connector.

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