JP5720590B2 - connector - Google Patents

Description

  The present invention relates to a connector that is fitted and fixed in a mounting hole provided in a device.

  As this type of connector, for example, a connector described in Patent Document 1 below is known. This connector includes a fitting portion that can be fitted into a mounting hole of a device and a connection portion that can be connected to a connector of a wire harness. The mounting hole of the device is a circular hole, and the fitting portion that fits into the mounting hole also has a circular outer peripheral shape. On the other hand, the connecting portion has an outer peripheral shape that forms a horizontally long rectangular shape. An inner housing holding a plurality of terminals is mounted inside the connection portion, and the electric wire drawn from each terminal is drawn to the outside through the inside of the fitting portion.

  Since the pitch in the arrangement direction of each small terminal is smaller than the pitch in the arrangement direction of each large terminal, the electric wires drawn out from each small terminal are arranged at a narrower pitch than the electric wires drawn out from each large terminal. Therefore, there is a problem that it becomes difficult to fill the adhesive when filling the space through which these electric wires pass. Therefore, in Patent Document 1, the center position of the fitting portion and the center position of the connection portion are formed to be offset by a predetermined amount so that the electric wires are arranged as evenly as possible. Thereby, the distance between the electric wires drawn out from each small terminal is increased as much as possible so that the adhesive is easily filled.

Japanese Patent No. 4583963

  However, since the connector fills a space in which a plurality of electric wires are accommodated with an adhesive, the distance between the electric wires varies depending on how the electric wires are bent. Also, even if the center position of the fitting part and the center position of the connection part are offset, the pitch of each terminal and the pitch of each electric wire are almost the same at the position close to each small terminal. The wires drawn from the terminals are still arranged at a narrow pitch. Therefore, it cannot be said to be sufficient as a method for facilitating filling of the adhesive.

  This invention is completed based on the above situations, Comprising: It aims at making it easy to fill with an adhesive agent.

  The present invention is a connector that is fitted and fixed in a mounting hole provided in a device, has a cavity that can accommodate a terminal fitting, and a lance that holds the terminal fitting in the cavity is provided so as to be deflectable. A terminal holding portion, and a cover portion that surrounds the terminal holding portion facing forward and has a filling space formed therein for filling with a non-conductive adhesive. It is provided in a form that protrudes forward from the back wall of the part, and has a feature in that each cavity is communicated with the filling space by notching the peripheral part of the lance in each terminal holding part .

  According to such a structure, since the peripheral part of the lance in each terminal holding part is notched, it becomes easy to make an adhesive flow into the peripheral part of a lance. Here, when the terminal holding part is notched, the insulation between adjacent terminal fittings becomes a problem, but the non-conductive adhesive plays a role of insulation, so that the insulation can be ensured. Therefore, it is possible to easily fill the adhesive between adjacent terminal holding portions.

The following configuration is preferable as an embodiment of the present invention.
The terminal holding portion is disposed on the opposite side of the lance with the cavity as a center and supports the terminal fitting, and the terminal holding portion is positioned between the support wall and the lance in the lance bending direction and communicates with the filling space. It is good also as a structure provided with a pair of side wall which has a flow hole.
According to such a configuration, since the adhesive can be flowed into the first flow holes, it becomes easier to fill the adhesive between the adjacent terminal holding portions.

The terminal holding portion is configured to include a front stop wall that performs a front stop of the terminal fitting inserted from the rear into the cavity, and a second communicating with the filling space is provided between the front stop wall and the lance in the terminal holding portion. It is good also as a structure in which the flow hole of this is formed.
According to such a configuration, since the adhesive can be flowed into the second flow hole, it becomes easier to fill the adhesive between the adjacent terminal holding portions.

It is good also as a structure by which the through-hole connected to the 1st flow hole is formed in the back wall of a cover part.
According to such a configuration, since the first flow hole is expanded by the through hole, it becomes easier to fill the adhesive between the adjacent terminal holding portions.

The support wall may have a configuration in which third flow holes communicating with the filling space are formed.
According to such a configuration, since the adhesive can be flowed into the third flow hole, it becomes easier to fill the adhesive between the adjacent terminal holding portions.

  According to the present invention, an adhesive can be easily filled between adjacent terminal holding portions.

Front view of the connector in the embodiment Rear view of connector Top view of connector The enlarged view which expanded and showed the A section in FIG. BB sectional view in FIG. CC sectional view in FIG. DD sectional view in FIG. The enlarged view which expanded and showed the E section in FIG. Sectional drawing which showed the state in which the terminal metal fitting was inserted in the cavity in FIG. FF sectional view in FIG. The enlarged view which expanded and showed the G section in FIG. FIG. 9 is a view showing the internal structure of a connector in a modified example, and a sectional view corresponding to FIG. HH sectional view taken on the line in FIG. The enlarged view which expanded and showed the I section in FIG. Sectional drawing which showed the state before inserting the terminal metal fitting in FIG. 12 into a cavity. The enlarged view which expanded and showed the J section in FIG.

<Embodiment>
An embodiment of the present invention will be described with reference to the drawings of FIGS. The connector 10 in the present embodiment has a housing 20 made of synthetic resin, and inside the housing 20, as shown in FIGS. 9 and 10, a plurality of terminal holding portions 21 that hold terminal fittings 30 are provided. Is formed. As shown in FIG. 3, the housing 20 includes a device connection portion 40 that fits into a mounting hole provided in a case of a device (not shown) and is connected to an internal wiring of the device, and a wire harness (not shown). And a connector connecting portion 50 to be connected to the connector. Further, an attachment portion 60 is provided between the device connection portion 40 and the connector connection portion 50 in the housing 20 so as to project outward over the entire circumference.

  As shown in FIG. 1, the mounting portion 60 has a form protruding to one side (the left side in the drawing), and a collar 61 is insert-molded at the protruding end portion. Bolt holes 62 through which bolts (not shown) are passed are formed inside the collar 61. Further, as shown in FIG. 3, a rubber ring 41 is fitted on the outer peripheral surface of the device connecting portion 40. The rubber ring 41 holds the inside of the case of the device in a sealed state by being sandwiched between the inner peripheral surface of the mounting hole on the device side and the outer peripheral surface of the device connecting portion 40. After fitting the device connecting portion 40 into the mounting hole of the device and aligning the bolt hole 62 with the screw hole on the device side, the bolt is passed through the bolt hole 62 and tightened into the screw hole on the device side. Is fixed to the equipment.

  As shown in FIG. 2, the device connecting portion 40 has a circular outer peripheral shape. On the other hand, the connector connecting portion 50 has a substantially rectangular outer peripheral shape as shown in FIG. As shown in FIG. 5, the device connection portion 40 has a hood shape that opens toward the rear, whereas the connector connection portion 50 has a hood shape that opens toward the front. A filling space S that can be filled with an adhesive made of a non-conductive resin is formed on the inner side of the connector connecting portion 50 (on the device connecting portion 40 side).

  A plurality of terminal holding portions 21 are provided in a form penetrating the partition wall 22 located between the device connection portion 40 and the connector connection portion 50 in the front-rear direction. In other words, each terminal holding portion 21 is provided in a form extending in the front-rear direction from the device connecting portion 40 to the connector connecting portion 50. Further, a portion of each terminal holding portion 21 that protrudes forward from the partition wall 22 is disposed in the filling space S, and the front end position of the terminal holding portion 21 is set to be aligned with the front end position of the filling space S. ing. On the other hand, the rear end position of the terminal holding portion 21 is set so as not to protrude outside the device connection portion 40 although it is located near the rear end of the device connection portion 40. That is, a portion of each terminal holding portion 21 that protrudes rearward from the partition wall 22 is disposed inside the device connection portion 40.

  A cavity 23 for accommodating the terminal fitting 30 is formed inside the terminal holding portion 21. The terminal fitting 30 includes a main body portion 31 having a substantially box shape and a barrel portion 32 connected to the rear of the main body portion 31, and a male tab 33 is provided on the front surface of the main body portion 31 so as to protrude forward. Yes. Moreover, the barrel part 32 consists of the wire barrel part crimped | bonded to the core wire of the electric wire W, and the insulation barrel part crimped | bonded to the insulation coating of the electric wire W. In addition to the insulation coating of the electric wire W, a rubber plug 34 that is externally fitted to the electric wire W is also pressure-bonded to the insulation barrel portion. A protrusion 35 is formed on the lower surface of the main body 31 so as to be fitted in a guide groove 28 described later and guide the insertion of the terminal fitting 30 into the cavity 23.

  As shown in FIG. 9, the cavity 23 includes a front side portion that accommodates the main body portion 31 and the barrel portion 32 of the terminal fitting 30, and a rear side portion that accommodates the rubber plug 34. The front portion of the cavity 23 is provided with a lance 24 that is cantilevered and protrudes forward. The lance 24 is formed on the upper portion of the terminal holding portion 21. On the other hand, a support wall 25 that supports the terminal fitting 30 is formed in the lower portion of the terminal holding portion 21. The support wall 25 is formed over the entire length of the front portion of the cavity 23.

  As shown in FIG. 10, a plurality of terminal holding portions 21 are provided so as to be densely arranged side by side in two upper and lower stages, so that the pitch of the adjacent terminal holding portions 21 is small. For this reason, in order to improve the fluidity of the adhesive in the filling space S, the peripheral space of the lance 24 in the terminal holding portion 21 is cut away to make a space for the adhesive flow. Such an adhesive flow space is configured to include a first flow hole S1, a second flow hole S2, and a third flow hole S3. The flow holes S1, S2, and S3 are defined as follows. Both communicate with the filling space S. In other words, the cavity 23 communicates with the filling space S through the flow holes S1, S2, S3. Therefore, the terminal fitting 30 accommodated in the cavity 23 is exposed to the filling space S through the flow holes S1, S2, S3.

  As shown in FIG. 11, the first flow hole S <b> 1 is formed between a pair of side walls 26, 26 that rise upward from both side edges of the support wall 25 and the lance 24. A pair of first flow holes S <b> 1 are provided on both the left and right sides of the terminal holding portion 21. The height of the side wall 26 is set to about one third of the height of the main body 31 of the terminal fitting 30. The narrowest space S4 among the spaces formed between the adjacent terminal holding portions 21 and 21 is a space formed between the adjacent side walls 26 and 26, but the height of the space S4 can be set as much as possible. By keeping it low, good fluidity of the adhesive is secured.

  In particular, in the present embodiment, the first flow hole S1 is expanded and the narrowest space S4 is kept low by forming the through-hole H having a substantially square shape when viewed from the front side in contact with the upper surface of the side wall 26. ing. As with the first flow hole S1, a pair of the through holes H are provided on both the left and right sides of the terminal holding portion 21, and as shown in FIG. Thus, the cavity 23 is opened, and as shown in FIG. 4, the cavity 20 is opened rearward. Therefore, the filling space S faces the rear of the housing 20 through the through hole H when the terminal fitting 30 is not inserted into the cavity 23.

  As shown in FIGS. 6 and 8, the second flow hole S <b> 2 is formed between the front stop wall 27 that rises upward from the front end of the support wall 21 and the lance 24. The second flow hole S2 communicates with the first flow holes S1 and S1 on both the left and right sides. Further, as shown in FIG. 11, the third flow hole S3 is formed to penetrate the support wall 25 in the vertical direction, and is formed over the entire length of the front portion of the cavity 23 as shown in FIG. ing. As shown in FIG. 11, the third flow hole S <b> 3 is disposed in front of the guide groove 28 formed in the support wall 28, and is formed wider than the guide groove 28. The guide groove 28 is formed over the entire length of the rear side portion of the cavity 23 and is configured to open to the rear of the cavity 23 as shown in FIG.

  The present embodiment is configured as described above, and its operation will be described subsequently. First, a method for manufacturing the connector 10 will be described. The rubber plug 34 is attached to the electric wire W, the insulation coating is peeled off at the end of the electric wire W, the wire barrel portion is crimped to the exposed core wire, and the insulation barrel is applied to the rubber plug 34 and the insulation coating. Crimp the part. When the electric wire W with the terminal fitting 30 formed in this way is inserted into the cavity 23 from the rear, the projection 35 is fitted into the guide groove 28, so that the terminal fitting 30 is inserted into the cavity 23 in a normal posture. The When the terminal fitting 30 reaches the proper insertion position, as shown in FIG. 9, the lance 24 is fitted into the recess formed on the upper surface of the main body 31 and is held in the cavity 23 in a state of being prevented from being detached. Further, the rubber plug 34 is accommodated in the rear portion of the cavity 23, and the cavity 23 is held in a sealed state.

  After all the terminal fittings 30 are inserted into the cavity 23, the adhesive is injected into the filling space S with the connector connecting portion 50 side of the housing 20 facing upward. Then, the adhesive flows vigorously from the filling space H to the first flow hole S1, the second flow hole S2, and the third flow hole S3, and the adhesive is surely applied to the narrowest space S4. It can be made to flow. Thus, after the filling space S is filled with the adhesive, the connector 10 is completed by heating and curing the adhesive. In the connector 10 thus formed, insulation between the adjacent terminal fittings 30 and 30 is ensured by the cured adhesive.

  As described above, in the present embodiment, the flow holes S1, S2, and S3 are formed by notching the peripheral portion of the lance 24 in the terminal holding portion 21 (adding a die-cutting pin to the molding die). Therefore, the fluidity of the adhesive can be improved. As a result, the narrowest space S4 can be filled with the adhesive. In addition, since the first fluid hole S1 is expanded by forming the through hole H, it is easier to fill the adhesive in the narrowest space S4.

<Modification>
Next, a modification of the present invention will be described with reference to the drawings of FIGS. In this modification, the through hole H in the connector 10 of the embodiment is not formed, and the other configurations are the same as those of the embodiment, and therefore, the description overlapping with the embodiment is omitted. Moreover, about the structure corresponding to embodiment, the code | symbol which added 100 to the code | symbol of embodiment shall be used, and the code | symbol same as embodiment shall be used about the same structure as embodiment.

  The connector 110 of this modification includes a cassette portion 129 to which a bracket (not shown) is attached. For example, the connector 110 is attached and fixed to the mating member by bolting the bracket to the body of the mating member. Yes.

  In the connector 110 according to this modification, the first flow hole S5 is smaller than the first flow hole S1 of the embodiment because the through hole H is not formed. For this reason, from the viewpoint of the fluidity of the adhesive, although it can be said that it is disadvantageous compared to the embodiment, the side wall 126 higher than the side wall 26 of the embodiment can be formed. 30 has the advantage that it can be firmly held from both the left and right sides.

<Other embodiments>
The present invention is not limited to the embodiments and modifications described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) Although the male terminal fitting 30 provided with the male tab 33 is illustrated in the said embodiment, according to this invention, it is good also as a female terminal fitting.

DESCRIPTION OF SYMBOLS 10 ... Connector 20 ... Housing 21 ... Terminal holding part 22 ... Partition (back wall)
DESCRIPTION OF SYMBOLS 23 ... Cavity 24 ... Lance 25 ... Support wall 26 ... Side wall 27 ... Front stop wall 30 ... Terminal metal fitting 50 ... Connector connection part (cover part)
H ... Through hole S1 ... First flow hole S2 ... Second flow hole S3 ... Third flow hole S4 ... Narrowest space S5 ... First flow hole

Claims (5)

A connector that is fixed by fitting into a mounting hole provided in the device,
A terminal holding portion provided with a cavity capable of accommodating a terminal fitting, and a lance for holding the terminal fitting in the cavity so as to be bent;
Surrounding this terminal holding portion facing forward, and a cover portion formed inside with a filling space filled with a non-conductive adhesive,
The terminal holding portion is provided in a plurality so as to protrude forward from the inner wall of the cover portion, and each cavity is communicated with the filling space by notching a peripheral portion of the lance in each terminal holding portion. A connector characterized by that.   The terminal holding portion is disposed on the opposite side of the lance with the cavity as a center and supports the terminal fitting, and is positioned between the support wall and the lance in the bending direction of the lance. The connector according to claim 1, further comprising a pair of side walls having a first flow hole communicating with the filling space.   The terminal holding portion is configured to include a front stop wall that performs a front stop of the terminal fitting inserted into the cavity from the rear, and between the front stop wall and the lance in the terminal holding portion, The connector according to claim 1, wherein a second flow hole communicating with the filling space is formed.   4. The connector according to claim 2, wherein a through hole communicating with the first flow hole is formed in a back wall of the cover portion. 5.   The connector according to claim 2, wherein a third flow hole communicating with the filling space is formed in the support wall.

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