JP4359845B2 - connector - Google Patents

Description

  The present invention relates to a connector having a batch rubber stopper.

As a connector equipped with a batch rubber plug, by inserting a terminal fitting from the back into the cavity provided in the housing, and penetrating the wire in a liquid-tight manner through each through hole of the batch rubber plug attached to the rear end of the housing, Some are designed to prevent water from entering the cavity. In this type of connector, a holder is attached as a means for restricting the lump rubber plug from separating backward with respect to the housing, and a terminal hole and a window hole for allowing an electric wire to pass through correspond to each cavity. It is penetrated by. In addition, as a connector provided with the lump rubber stopper, there is one disclosed in Patent Document 1.
Japanese Patent Laid-Open No. 5-266694

In the connector, the window hole of the holder has an opening area for allowing the terminal fitting to pass therethrough, but the outer diameter of the electric wire is smaller than that of the terminal fitting. Therefore, when a tensile force in a direction intersecting the penetration direction of the window hole is applied to the electric wire, the electric wire is largely displaced while tilting the posture in the window hole. As described above, when the electric wire is pulled while being obliquely displaced in the window hole behind the collective rubber plug, the opening edge of the through hole of the collective rubber plug is deformed by the electric wire, and the sealing performance is deteriorated. Concerned.
The present invention has been completed based on the above-described circumstances, and an object thereof is to prevent a decrease in waterproof performance of a rubber plug.

Connector invention 請 Motomeko 1 comprises a housing having a cavity, and the terminal fitting inserted from the rear with respect to the cavity, the wire connected to the rear end of the terminal fitting, the cavity definitive in the housing provided behind the support means comprising a through space to permit passage of the terminal fitting and the electric wire to the electric wire accommodating a rubber stopper to penetrate in a liquid-tight manner and at the back, are provided, said support a possible assembly in pairs to the means, the electric wire and fittable comb restricting groove in the through direction substantially at right angles plate-shaped and said through space of the electric wire with respect to the rubber plug heavy with two regulating members are provided, the formation region of the through-space in the support means, each restriction member back and forth in a direction alignment direction of the regulating groove is substantially perpendicular to each other with A pair of mounting grooves before and after being respectively inserted are formed on so that, and, between the surface and the front side of the mounting groove after said rubber plug having characterized in that are spaced apart.

<Invention of Claim 1>
Oite After inserting the terminal fitting into key Yabiti, two regulating member, in a direction alignment direction of the restricting groove is substantially perpendicular to each other, are assembled is inserted into the front and rear of the mounting grooves corresponding provided on the support means . Due to the assembly of the two restricting members, a lattice-shaped small hole is formed by both restricting grooves behind the rubber plug, and the electric wire is passed through each small hole. Thereby, the electric wire is held in a state where displacement in all directions in a two-dimensional direction perpendicular to the penetrating direction with respect to the rubber plug is restricted. Therefore, there is no possibility that the rubber plug is deformed due to the displacement of the electric wire behind the rubber plug, and the waterproof performance of the rubber plug is prevented from being lowered.

<Embodiment 1>
A first embodiment of the present invention will be described below with reference to FIGS. The connector according to this embodiment includes a housing 10, restriction members 30 </ b> F and 30 </ b> R, and a terminal fitting 40.
The housing 10 is made of a synthetic resin, and is connected to a terminal housing portion 11 having a rectangular block shape, a cylindrical fitting portion 12 having a substantially rectangular tube shape surrounding the terminal housing portion 11, and a rear end of the terminal housing portion 11. The support portion 13 (support means which is a constituent element of the present invention) is integrally formed.
A plurality of cavities 14 elongated in the front-rear direction are formed in the terminal accommodating portion 11 so as to be aligned vertically and horizontally (up, down, left and right), and the terminal fittings 40 are individually inserted into the cavities 14 from the rear. It has become. Each cavity 14 is formed with a lance 15 that cantilevered forward along the inner wall thereof. The cylindrical fitting portion 12 is connected to the outer periphery of the terminal accommodating portion 11 at the rear end portion, and a fitting space 16 opened forward is provided between the terminal accommodating portion 11 and the cylindrical fitting portion 12. A mating connector (not shown) is inserted into the fitting space 16 from the front.

  The support portion 13 has a rectangular block shape that is slightly larger than the terminal accommodating portion 11. The support portion 13 has a large opening at the rear end face and communicates with the openings at the rear ends of all the cavities 14. A substantially rectangular penetrating space 17 is formed. The through space 17 is a space for allowing the terminal fitting 40 inserted into the cavity 14 and the electric wire 43 connected to the terminal fitting 40 to pass therethrough, and a substantially first half portion of the through space 17 is opened on the lower surface of the support portion 13. The housing space 18 is a control space 19 in the substantially latter half. The accommodation space 18 and the regulation space 19 are partitioned by a partition wall 20 in which a plurality of communication holes 21 corresponding to the cavities 14 are penetrated in the front-rear direction. The opening shape and the opening area of the communication hole 21 are substantially the same as those of the cavity 14.

  A batch rubber plug 22 (a rubber plug which is a constituent feature of the present invention) is assembled in the housing space 18 from the opening 23 on the lower surface. The assembly direction of the collective rubber plug 22 is substantially perpendicular to the insertion direction of the terminal fitting 40 with respect to the cavity 14. A cap 24 is attached to the opening 23 of the accommodation space 18 on the lower surface of the support portion 13 to restrict the collective rubber plug 22 from being detached downward from the support portion 13. The collective rubber plug 22 is formed with a plurality of seal holes 25 penetrating in the front-rear direction (parallel to the insertion direction of the terminal fitting 40 with respect to the cavity 14) corresponding to each cavity 14.

  The regulation space 19 is formed with a pair of front and rear mounting grooves 26F and 26R for mounting later-described regulation members 30F and 30R. The front mounting groove 26 </ b> F is formed in a straight line on the upper surface and the left and right side surfaces of the through space 17 in a straight line substantially orthogonal to the insertion direction of the terminal fitting 40 with respect to the cavity 14. A region of the through space 17 corresponding to the front mounting groove 26F in the front-rear direction is opened as a lower surface mounting port 28F on the lower surface (outer surface) of the support portion 13, and the lower surface mounting port 28F has both left and right side surfaces. The lower end of the mounting groove 26F is in communication. A pair of retaining recesses 29F are formed at the upper end portions of the left and right mounting grooves 26F.

  On the other hand, the rear mounting groove 26 </ b> R is formed on the right side surface and the upper and lower surfaces of the through space 17 in a straight line substantially orthogonal to the insertion direction of the terminal fitting 40 with respect to the cavity 14. A region corresponding to the rear mounting groove 26R in the front-rear direction in the through space 17 is opened as a side surface mounting port 28R on the left side surface (outer surface) of the support portion 13, and the side surface mounting port 28R has an upper and lower side. The left end portions of the mounting grooves 26R on both sides communicate with each other. A pair of retaining recesses 29R is formed at the right end of the upper and lower mounting grooves 26R.

A front regulating member 30F is assembled to the front mounting groove 26F, and a rear regulating member 30R is assembled to the rear mounting groove 26R.
The front restricting member 30F is made of synthetic resin, has a substantially rectangular flat plate shape that is substantially perpendicular to the insertion direction of the terminal fitting 40 with respect to the cavity 14, and includes a plurality of restricting grooves 31F that are cut downward from the upper edge. In parallel with each other. The width dimension of the restriction groove 31 </ b> F is substantially the same as the outer diameter of the electric wire 43. In addition, a pair of retaining protrusions 32F are formed at the upper ends of the left and right side edges of the front restricting member 30F. On the other hand, the rear regulating member 30R is made of synthetic resin, has a substantially rectangular flat plate shape that is substantially perpendicular to the insertion direction of the terminal fitting 40 with respect to the cavity 14, and has a plurality of regulating grooves 31R that are cut leftward from the right edge. Are formed in a comb-like shape in parallel in the vertical direction. The width dimension of the restriction groove 31R is substantially the same as the outer diameter of the electric wire. Further, a pair of retaining protrusions 32R are formed at the right end portions of the upper and lower end edges of the rear regulating member 30R.

  The terminal fitting 40 is elongated in the front-rear direction, the substantially first half portion is a square tube portion 41, and the substantially second half portion is a wire connection portion 42. A wire 43 having a circular cross section is connected to the wire connection portion 42 by crimping. ing. The terminal fitting 40 is inserted into the cavity 14 through the through space 17 from the rear of the housing 10. The terminal fitting 40 inserted to the proper position is prevented from being pulled out by locking the square tube portion 41 to the lance 15 of the cavity 14.

Next, the operation of this embodiment will be described.
When attaching the terminal fitting 40 to the housing 10, first, the collective rubber plug 22 is fitted into the accommodation space 18 from below, the cap 24 is attached to the lower surface of the support portion 13 to close the opening 23, and the collective rubber is attached. This prevents the stopper 22 from being detached downward. In this state, the seal holes 25 are arranged so as to correspond to the cavities 14 in the rear position. The gap between the inner surface of the housing space 18 and the outer surface of the batch rubber plug 22 is a pair of front and rear rectangular frames formed so as to collectively surround all the seal holes 25 on the front and rear end faces of the batch rubber plug 22. Sealed by a lip (not shown).

  Thereafter, each terminal fitting 40 is inserted into the through space 17 from the rear, and the seal hole 25 is passed through while elastically expanding, and inserted into the cavity 14. The normally inserted terminal fitting 40 is secured by the lance 15. When the terminal fitting 40 is properly inserted, the inner periphery of the seal hole 25 is elastically contacted with the outer periphery of the electric wire 43, so that the gap between the outer periphery of the electric wire 43 and the inner periphery of the seal hole 25 is sealed. The Further, a region behind the seal hole 25 in the electric wire 43 passes through the restriction space 19 and is led out from the rear end face of the support portion 13 to the rear.

After all the terminal fittings 40 are inserted, the front regulating member 30F and the rear regulating member 30R are fitted into the front mounting groove 26F and the rear mounting groove 26R, respectively. Either of the two regulating members 30F and 30R may be assembled first.
The front restricting member 30F is fitted into the restricting space 19 from the lower surface mounting opening 28F. In the fitting process, the electric wire 43 is fitted into the restricting groove 31F, and the left and right end edges of the front restricting member 30F are crushed and deformed in a state of being fitted into the left and right mounting grooves 26F. Elastically bends inward. When the front restricting member 30F reaches the proper assembled state, the left and right edges are elastically restored to the outside, and the retaining protrusion 32F is engaged with the retaining recess 29F of the mounting groove 26F. The downward release of the restricting member 30F is restricted. In a state where the front restricting member 30F is assembled, the upper end edge of the front restricting member 30F is fitted into the upper restricting groove 31F, and a plurality of vertically restricting restricting grooves 31F arranged in the left and right are arranged in the vertical direction. Corresponds to the cavity 14. Further, the front restricting member 30F is restricted from displacement in the front-rear direction with respect to the housing 10 by fitting into the mounting groove 26F.

  On the other hand, the rear regulating member 30R is fitted into the regulating space 19 from the side surface mounting opening 28R. In the insertion process, the electric wire 43 is fitted into the restriction groove 31R, and the upper and lower edges of the rear restriction member 30R are crushed and deformed in a state of being fitted into the upper and lower attachment grooves 26R. To bend elastically. When the rear restricting member 30R reaches the proper assembled state, the upper and lower edges elastically return to the outside, and the retaining protrusion 32R engages with the retaining recess 29R of the mounting groove 26R. The separation to the side of 30R is regulated. In the state where the rear regulating member 30R is assembled, the right end edge portion of the rear regulating member 30R is fitted into the right regulating groove 31R, and a plurality of cavities arranged in the lateral direction with the horizontally long regulating grooves 31R arranged in parallel vertically 14 corresponds. Further, the rear restricting member 30R is restricted from being displaced in the front-rear direction with respect to the housing 10 by fitting into the mounting groove 26R.

  When both the front restriction member 30F and the rear restriction member 30R are assembled, the front restriction member 30F is viewed in the same direction as the insertion direction of the terminal fitting 40 with respect to the cavity 14 (that is, from the rear). Each of the vertically long restricting grooves 31F and the horizontally long restricting grooves 31R of the rear restricting member 30R is configured by vertically and horizontally forming lattice-like small holes 33 corresponding to the cavities 14 individually. Each electric wire 43 passes through the small hole 33 and is positioned so as not to be displaced vertically and horizontally by contacting the inner periphery of the small hole 33.

As described above, in the present embodiment, the regulating members 30F and 30R are assembled to the support portion 13 after the terminal fitting 40 is inserted into the cavity 14, and the assembly of the regulating members 30F and 30R causes the rear of the batch rubber plug 22 to be installed. Then, the regulation grooves 31F and 31R are fitted to the electric wire 43 in the through space 17, and the electric wire 43 is displaced in the direction intersecting the penetrating direction with respect to the collective rubber plug 22 (that is, the vertical direction and the horizontal direction). Maintained in a regulated state. Therefore, there is no possibility that the collective rubber plug 22 is deformed due to the electric wire 43 being displaced behind the collective rubber plug 22, and the waterproof performance of the collective rubber plug 22 is prevented from being lowered.
Further, since the regulating members 30F and 30R have a plate shape substantially perpendicular to the penetration direction of the electric wire 43 with respect to the collective rubber plug 22, the entire connector (housing) in the front-rear direction compared to the regulating member having a block shape. 10 overall) can be reduced in size.

<Other embodiments>
The present invention is not limited to the embodiment 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, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
( 1 ) In the above embodiment, the support means is integrally formed with the housing. However, according to the present invention, the support means may be a separate component from the housing.
( 2 ) In the above embodiment, the rubber plug is described as a batch rubber plug that allows a plurality of electric wires to pass therethrough. However, the present invention relates to a case where the rubber plug is a separate rubber plug that allows only one electric wire to pass therethrough. Is also applicable.

Sectional drawing showing the state before inserting a terminal metal fitting in Embodiment 1. Sectional view showing the terminal fitting inserted and the restriction member attached Sectional view showing the state where the restriction member is attached without inserting the terminal fitting AA sectional view of FIG. BB sectional view of FIG. CC sectional view of FIG. Rear view showing the state before the restriction member is attached Side view showing the state where the restriction member is attached Bottom view showing the state where the restriction member is attached

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Housing 13 ... Support part (support means)
14 ... Cavity 17 ... Penetration space 22 ... Batch rubber stopper (Rubber stopper)
30F, 30R ... Restriction member 31F, 31R ... Restriction groove 40 ... Terminal fitting 43 ... Electric wire

Claims (1)

A housing having a cavity;
A terminal fitting inserted from the rear into the cavity;
An electric wire connected to the rear end of the terminal fitting;
Provided behind the cavity definitive in the housing, accommodating a rubber stopper through which the electric wire in a liquid-tight manner and a support means comprising a through space to permit passage of the terminal fitting and the electric wire to the rear Are provided,
Wherein a possible support means pair to assembling, the wire to be fitted to comb regulated in penetrating direction substantially at right angles plate-shaped and said through space of the electric wire with respect to the rubber plug Provided with two regulating members having grooves ,
In the formation region of the through space in the support means, a pair of front and rear mounting grooves are formed in which the respective restricting members are inserted so as to overlap each other in a direction in which the alignment directions of the restricting grooves are substantially perpendicular to each other. ,
The connector is characterized in that a gap is provided between the rear surface of the rubber plug and the mounting groove on the front side .

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