JP3362698B2 - Waterproof joint connector - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof joint connector. FIG. 15 shows a prior art of this type of waterproof joint connector. In the female connector housing 100 shown here, cavities 101 for accommodating female terminal fittings are provided in a plurality of rows in a width direction (a direction from a near side to a far side in the drawing) and in a plurality of steps in a height direction. , Respectively. Then, in order to short-circuit the terminal fittings 102 in the upper and lower cavity rows in a predetermined pattern, the bus bar body 1 incorporating the bus bar 103 is used.
Numeral 04 allows the upper and lower cavity rows to be individually fitted. The waterproof structure for the above-mentioned joint connector is as follows. Female connector housing 100
A so-called collective rubber stopper 105 is fitted in the rear part. An electric wire insertion hole 106 through which each terminal fitting 102 can be inserted penetrates the collective rubber stopper 105.
The electric wire 107 connected to 02 can be sealed.
The collective rubber stopper 105 is connected to the female connector housing 1.
00 is stopped by a rubber stopper holder 108 attached to the rear end. On the other hand, both busbar bodies 104
The rubber ring 109 provided for each of the upper and lower cavities is provided by a seal between the upper and lower cavities.
4 is secured by close contact with the inner surface. However, according to the above-mentioned waterproof structure, since two rubber rings 109 are used as individual seals for both busbar bodies 104, there is room for reduction in the number of parts. Was left. Further, depending on the specification, one side of the upper and lower cavity rows may not be used entirely and may be in an empty state. Even in such a case, intrusion of water into the connector housing 100 cannot be avoided unless measures are taken to set the bus bar body. However, a part dedicated to water stoppage is prepared for the cavity 101 which is not used in this case. That is not reasonable. The present invention has been devised in view of the conventional problems described above, and an object of the present invention is to provide a waterproof joint connector that can achieve water stoppage with a simple structure. According to the first aspect of the present invention, there is provided a semiconductor device comprising: a plurality of rows of cavities for accommodating terminal fittings; A connector housing formed respectively; a bus bar body provided with a bus bar that can be fitted into the connector housing and that can be individually fitted into the cavity row of each stage and short-circuits between terminal fittings; A bag-shaped cap fitted to the connector housing so as to wrap the bus bar body and the connector housing from the fitting side of the bus bar body in a state where the body is fitted to the connector housing; and a rear part of the connector housing. And a seal hole through which each terminal fitting can be inserted and an electric wire connected to these terminal fittings can be individually sealed is formed. A seal member having an outer peripheral edge formed with a seal edge which is in close contact with an inner peripheral surface of the cap and collectively seals the space between the connector housing and the cap; and The member is the connector housing
At the rear end of the jing, sandwiched by a seal holder
The seal holder
Is formed with a locking portion capable of locking with the cap,
The rear end face of the connector housing has the seal portion.
Penetrate the material in a sealed state and determine the position with respect to the seal member.
Holding projections are formed
The projection is locked to the seal holder to
Can be fixed to the connector housing
It is characterized in that there. According to the first aspect of the present invention, the terminal fitting is short-circuited in a predetermined short-circuit pattern by fitting the bus bar body to the cavity row for each step in the connector housing. . The sealing of the electric wires connected to the respective terminal fittings is performed by the edges of the sealing holes of the sealing member being in close contact with the electric wire coating. In addition, the seal between each bus bar body and the connector housing is performed by a seal rim formed on the outer peripheral edge of the seal member being in close contact with a cap that collectively accommodates the bus bar body and the connector housing. As described above, according to the first aspect of the present invention, the seal for each electric wire and the seal between the bus bar and the housing are performed by the common seal member. Can be reduced. In addition, since the structure is covered with the cap, it is not necessary to take any special measures for stopping water even when the cavity row becomes empty. Ma
In addition, the seal member is not attached by the seal holder.
And the cap is removed by this seal holder.
Stop is made. In addition, the sealing member is
The mounting is performed with the
The seal against the pump is assured. An embodiment of the present invention will be described below with reference to FIGS. 1 to 14. The joint connector of the present embodiment includes a housing 10, a plurality of terminal fittings 20, a seal member 30, a seal holder 40, two bus bar bodies 50, and a cap 60. This is to make a short circuit with a short circuit pattern. <Housing 10> The housing 10 is made of a synthetic resin material. In the housing 10, a plurality of cavities 11 penetrating in the front-rear direction are divided into upper and lower tiers, and are arranged at a constant pitch in a horizontal row for each tier. It is formed. A substantially first half region of the upper cavity 11 and a substantially first half region of the lower cavity 11 are respectively connected to the housing 10.
Each of the open portions is formed with a lance 12 projecting forward in a cantilever manner.
The upper row of cavities 11 and the lower row of cavities 11
Between the rows, there is formed a horizontally elongated slit-shaped recess 13 for inserting the peripheral wall of the bus bar body 50. still,
The upper surface wall and the lower surface wall of the concave portion 13 are partially notched so as to communicate with the upper cavity 11 and the lower cavity 11, respectively. The housing 10 has two holding projections 14 projecting rearward from both left and right ends on the rear end face.
And two deformation regulating projections 15 (which together with the holding projections 14 constitute a positioning portion of the present invention) projecting rearward from a position between the two holding projections 14 in parallel with the holding projections 14. The first half of the holding projection 14 (the housing 10
Is formed as a base 14A having a circular cross section, and the rear half is formed as a non-circular locking piece 14B which is thinner than the base 14A. The locking piece 14B is locked to the seal holder 40. To restrict the detachment of the seal holder 40 to the rear. The deformation restricting protrusion 15 is tightly penetrated through the fitting hole 33 of the seal member 30, and thereby the housing 1
0 and seal member 30 interposed between seal holder 40
Regulates vertical deformation of The housing 10 has a cavity 11
Are symmetrical with respect to the insertion direction line of the terminal fitting 20 with respect to. That is, the shape is vertically symmetrical (symmetrical with respect to the parallel direction line of the terminal fittings 20 inserted into the cavity 11) and symmetrical (symmetrical with respect to the direction orthogonal to the parallel direction of the terminal fittings 20). <Terminal Fitting 20> The terminal fitting 20 is formed by bending a metal plate material punched into a predetermined shape, and has a square tube-shaped fitting portion 21 whose substantially front half portion is opened in both front and rear directions. Substantially the latter half is the wire connection portion 22 to which the wire 25 is crimped. An elastic contact piece 23 for elastically contacting the connection piece 57 of the bus bar body 50 is formed inside the fitting portion 21, and a locking member for locking with the lance 12 of the housing 10 is formed on a peripheral wall plate of the fitting portion 21. A hole 24 is formed. The terminal fitting 20 is inserted into the cavity 11 of the housing 10 in which the seal member 30 and the seal holder 40 are assembled so as to penetrate the seal holder 40 and the seal member 30 from behind. Immediately before the terminal fitting 20 reaches the regular insertion position, the lance 12 interferes with the outer peripheral surface of the fitting portion 21 so that the lance 12 elastically bends so as to protrude outside the housing 10, and the terminal fitting 20 reaches the regular insertion position. And the lance 12 is elastically returned to the locking hole 24.
, So that the terminal fitting 20 is stopped.
When the terminal fitting 20 is inserted into the housing 10,
The insertion posture for the upper cavity 11 and the insertion posture for the lower cavity 11 are vertically symmetric. <Seal Member 30> The seal member 30 is made of rubber and has an oval thick plate shape.
Is assembled so as to be sandwiched between the rear end face of the seal holder 40 and the front end face of the seal holder 40. The seal member 30 is formed with a plurality of seal holes 31 opened on both front and rear surfaces thereof so as to be aligned with each cavity 11 of the housing 10. The seal hole 31 has a circular shape, and three lip portions 31A having an angled cross section are formed in the circumferential direction on the inner peripheral surface. The inner diameter of the lip portion 31A is set smaller than the outer diameter of the electric wire 25. I have. The electric wire 25 penetrates through the seal hole 31, and the lip portion 31 </ b> A elastically adheres to the outer periphery of the electric wire 25, thereby sealing between the electric wire 25 and the seal hole 31. Further, fitting holes 32 and 33 for penetrating the holding protrusion 14 and the deformation restricting protrusion 15 of the housing 10 are formed in the seal member 30 so as to penetrate forward and backward. Since the inner diameters of the fitting holes 32, 33 are set slightly smaller than the outer diameters of the projections 14, 15, the fitting holes 3
The space between the projections 2 and 33 and the projections 14 and 15 is sealed. The outer periphery of the seal member 30 is a seal edge, and includes three lip portions 34 having a substantially semicircular cross section.
Are formed in the circumferential direction. The lip portion 34 elastically contacts the inner periphery of the cap 60 to seal between the outer periphery of the seal member 30 and the inner periphery of the cap 60. The sealing member 30 is provided on the housing 10.
Similarly, the shape is point-symmetric with respect to the insertion direction line of the terminal fitting 20 into the cavity 11. That is, it is vertically symmetrical (symmetrical with respect to the parallel direction line of the terminal fittings 20 inserted into the cavity 11) and symmetrical (laterally).
Are symmetrical with respect to a line orthogonal to the parallel direction of. <Seal Holder 40> Seal Holder 40
Is made of a synthetic resin material, and has an oval thick plate shape as a whole similarly to the seal member 30. In addition, the sealing member 30
The outer peripheral lip portion 34 has a dimension slightly larger than the outer periphery of the seal holder 40. A plurality of terminal insertion holes 41 penetrating between the front and rear end faces of the seal holder 40.
Are formed in alignment with the cavities 11 and the seal holes 31. The terminal fitting 20 is inserted from the terminal insertion hole 41 and housed in the cavity 11. Also,
The holding protrusion 14 of the housing 10 is provided on the seal holder 40.
A stopper hole 42 is formed which is aligned with the stopper hole 42.
The holding protrusion 14 is provided on a stepped receiving portion 42A formed on the inner wall of
Is locked, the seal holder 40 is locked.
Is restricted from being detached from the housing 10. A circular regulating hole 43 is formed at a position where the deformation regulating protrusion 15 of the housing 10 is aligned, and the tip of the deformation regulating protrusion 15 is fitted into the regulating hole 43 to reinforce the deformation regulating protrusion 15. . On the outer periphery of the seal holder 40, a total of four lock projections 44 are formed at both ends of the upper and lower flat surfaces. The lock projection 44 regulates the cap 60 from being detached from the housing 10, the seal member 30 and the seal holder 40 by engaging with the cap 60. Further, a pair of left and right symmetrical index protrusions 45 are formed in the arc-shaped regions at the left and right ends on the outer periphery of the seal holder 40 so as to be deviated upward from the center height. The index protrusion 45 serves as a guide for determining the vertical direction of the housing 10 when the terminal fitting 20 is inserted. The seal holder 40 is bilaterally symmetrical (symmetrical with respect to a line perpendicular to the parallel direction of the terminal fittings 20 into which the cavities 11 are inserted) due to the presence of the index protrusions 45, but is vertically asymmetrical (inserted into the cavities 11). (Asymmetrical with respect to the parallel direction line of the terminal fittings 20). <Busbar Body 50> The busbar body 50 is obtained by integrating a synthetic resin holding body 51 and a metal busbar 55 by insert molding. Holder 51
Is composed of a horizontally long plate-like holding portion 52 and a flat tubular portion 53 projecting rearward (in a direction toward the housing 10) from the plate-like holding portion 52. The bus bar 55 is formed by projecting a plurality of connecting pieces 57 in a cantilever form in parallel from the side edge of a band-shaped carrier 56 so that the carrier 56 is along the plate-shaped holding portion 52 and the connecting piece 57 is placed in the cylindrical portion 53. Is held in a state of facing. A punching hole 54 is opened in the plate-shaped holding portion 52 at a position corresponding to the gap between the adjacent connection pieces 57 in the carrier 56. In the manufacturing process of the bus bar body 50, each punching hole in the carrier 56 is formed after insert molding. By punching a portion facing 54 with a punch and a die in accordance with a predetermined short circuit pattern, the carrier is divided (not shown), and is thus divided into a plurality of bus bars 55. One bus bar 55 has at least three connection pieces 57, and a plurality of terminal pieces 20 are short-circuited for each bus bar 55 by connecting the terminal pieces 20 to each connection piece. The bus bar body 50 is assembled so that the upper row of cavities 11 and the lower row of cavities 11 are individually covered with the cylindrical portion 53 from the front with respect to the housing 10. Connected to fitting 20. The bus bar body 50 can identify the short-circuit pattern by changing the color of the holding body 51,
The shape of the holding body 51 is vertically asymmetric. Therefore, by confirming the color and the direction, the predetermined bus bar body 50 can be assembled to the housing 10 in the correct direction, and the terminal fittings 20 can be short-circuited in the correct short-circuit pattern. A guide groove 58 in the front-rear direction is formed on both left and right ends of the cylindrical portion 53, and one locking protrusion 17, 18 corresponding to the guide groove 58 is formed in the housing 10.
Are formed. Since the rear end of the cylindrical portion 53 and the rear end edge of the guide groove 58 are locked so as to be sandwiched between the locking projections 17 and 18, the bus bar body 50 is held at the temporary locking position. In this case, the connection piece 57 is retracted to a position where it does not come into contact with the terminal fitting 20, thereby avoiding generation of a fitting resistance when the terminal fitting 20 is inserted. Further, the front and rear end edges of the guide groove 58 are locked so as to sandwich the locking protrusions 17 and 18 from the outside, so that the bus bar body 50 is held at a regular assembly position. <Cap 60> The cap 60 is made of a synthetic resin material and has a bottomed cylindrical shape having an oblong shape in a front view. A lock projection 44 of the seal holder 40 is provided on an opening edge of the cap 60.
Is formed, and the cap 60 is locked in the assembled state by the engagement of the lock projection 44 and the lock hole 61. Further, a relief portion 62 bulging to the outer peripheral side for avoiding interference with the index projection is formed at the opening edge of the cap 60. Such a cap 60
The area near the opening edge of the inner peripheral surface of the seal member 3
The outer peripheral lip portion 34 is a sealing surface 63 to be elastically contacted. <Assembly of Each Part> The assembling procedure of each part described above is as follows. First, the sealing member 30 is temporarily assembled to the housing 10 such that the fitting holes 32 and 33 are fitted to the holding projections 14 and the deformation regulating projections 15, and the sealing member 30 is sandwiched between the housing 10. At the same time, the seal holder 40 is assembled such that the locking piece 14B of the holding projection 14 is engaged with the retaining hole 42 and the tip of the deformation regulating projection 15 is fitted into the regulating hole 43. on the other hand,
In front of the housing 10, the bus bar body 50 is assembled at a temporary locking position. Next, the terminal fitting 20 is inserted into the terminal insertion hole 41 and inserted into the cavity 11 while penetrating the seal hole 31. Thereafter, when the bus bar body 50 is pushed from the temporary locking position to the regular assembling position, the terminal fitting 2
0 is short-circuited in a predetermined pattern. In addition, the bus bar body 50
When the terminal fitting 20 is half-inserted, the lance 12 protrudes outward, so that the pushing of the bus bar body 50 is restricted, so that the half-insertion of the terminal fitting 20 can be detected. After assembling the bus bar body 50, finally, the cap 60 is assembled so as to cover the housing 10 and the bus bar body 50. In a state where the cap 60 is assembled, the intrusion of water into the cap 60 from the gap between the inner periphery of the cap 60 and the outer periphery of the seal member 30 is prevented by the lip portion 34 on the outer periphery of the seal member 30. In addition, with regard to water from the outer surface of the seal member 30, the lip portion 31A of the seal hole 31 is in close contact with the outer periphery of the electric wire 25, and the inner periphery of the fitting holes 32, 33 is formed by the holding projection 14 and the deformation regulating projection 15. It is prevented by closely adhering to the outer periphery. As described above, according to the present embodiment, the sealing for the electric wires 25 and the sealing for the bus bar body 50 and the connector housing 10 are performed by the single sealing member 30, so that the number of parts is reduced as compared with the conventional case. Has been achieved. In addition, even when the upper and lower cavities are vacant, since the water is stopped by the cap 60, it is not necessary to take a special countermeasure against water. Furthermore, since the seal member 30 is attached in a state where it is positioned by the holding projection 14 and the deformation regulating projection 15, the sealing function for the cap 60 and each electric wire 25 is ensured.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a state where a seal member and a seal holder are assembled to a housing in Embodiment 1. FIG. 2 is a partially cutaway perspective view of a bus bar body. FIG. 3 is a perspective view of a cap. FIG. 4 is a partially cutaway plan view showing an assembled state. FIG. 5 is a partially cutaway plan view showing a state where a seal member and a seal holder are assembled to a housing. FIG. 6 is a partially cutaway plan view of a housing. FIG. 8 is a rear view of a seal member. FIG. 8 is a rear view of a seal holder. FIG. 9 is a partially cutaway plan view of a bus bar body. FIG. 10 is a partially cutaway plan view of a cap. 12 is a sectional view showing a state where a seal member and a seal holder are assembled to a housing. FIG. 13 is a sectional view of a bus bar body. FIG. 14 is a sectional view of a cap. FIG. 15 is a sectional view showing a seal structure of a conventional connector. ] 10 ... Howe Ring 11 ... cavity 30 ... sealing member 40 ... seal holder 41 ... terminal insertion holes 45 ... index projection 55 ... busbar

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-7-326422 (JP, A) JP-A-4-32175 (JP, A) JP-A-7-320811 (JP, A) JP-A-11- 214102 (JP, A) JP-A-8-321366 (JP, A) JP-A-5-326066 (JP, A) JP-A-11-204154 (JP, A) JP-A-4-49480 (JP, U) Actually open 7-32888 (JP, U) Actually open 4-49478 (JP, U) Actually open 3-57876 (JP, U) Actually open 7-4217 (JP, U) Actually open 5-23462 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01R 13/52 301 H01R 4/58 H01R 31/08 H01R 13/64 H01R 13/652 H01R 23/02

Claims (1)

(57) [Claim 1] A connector housing in which a plurality of rows of cavities for accommodating terminal fittings are formed in a plurality of rows in a width direction and a plurality of steps in a height direction, respectively. A bus bar body provided with a bus bar which can be fitted and which can be individually fitted into the cavity row of each stage and short-circuits between terminal fittings, and wherein each bus bar body is fitted to the connector housing. A bag-shaped cap that is fitted to the connector housing so as to wrap the bus bar body and the connector housing from the fitting side of the bus bar body, and is disposed at a rear portion of the connector housing so that each terminal fitting can be inserted therethrough. A seal hole for individually sealing the wires connected to the metal fittings is formed, and the outer peripheral edge is closely attached to the inner peripheral surface of the cap, and the cap is closed. Collectively between Kuta housing and said cap is configured with a seal member sealing edge for sealing is formed, and the sealing member at the rear end of the connector housing
In the part sandwiched by the seal holder
The seal holder is attached to the seal holder.
A locking portion that can be locked with the socket is formed, and the connector housing has a rear end face with the seal.
Through the seal member in a sealed state
The holding projections for positioning are projected and formed.
The holding projection is locked to the seal holder to achieve the same seal.
The holder can be fixed to the connector housing.
Waterproof joint connector according to claim that you are me.