JP5818101B2 - Waterproof connector - Google Patents

Description

  The present invention relates to a waterproof connector.

  Conventionally, the thing of patent document 1 is known as an example of a waterproof connector. This connector includes a male housing and a female housing that can be fitted to each other. The female housing includes a terminal accommodating portion in which a cavity into which the female terminal fitting can be inserted is formed, and an outer cylindrical portion surrounding the terminal accommodating portion, and a rubber seal is provided on the outer peripheral surface of the terminal accommodating portion. A ring is fitted.

  When the two housings are fitted, the hood portion of the male housing enters between the seal ring and the outer cylinder portion of the female housing, and the seal ring is sandwiched between the hood portion and the terminal accommodating portion. In close contact, both housings are sealed and all cavities are waterproofed together.

JP 2001-319725 A

  By the way, since the seal ring is made of rubber, it is easily deformed. For this reason, there exists a possibility that a seal ring may be mounted | worn with a female side housing in the state deform | transformed so that the one end side and other end side of the width direction may shift | deviate back and forth, for example. Further, the seal ring may be pushed by the tip of the hood portion when the male housing and the female housing are fitted, for example, and may be displaced rearward from the normal mounting position. If the seal ring is not held in a regular mounting state (regular shape and regular position), there is a possibility that the waterproofness may be lowered, and thus a countermeasure has been desired.

  This invention is completed based on the above situations, Comprising: It aims at providing the waterproof connector which can hold | maintain a sealing member in a regular mounting state.

A waterproof connector disclosed in the present specification includes a pair of housings that can be fitted to each other, and a synthetic resin seal that is mounted on opposing surfaces of the pair of housings that face each other when fitted, and seals between the pair of housings. And a member.
According to such a configuration, since the sealing member is made of synthetic resin, it is less likely to be deformed than when it is made of rubber, and is sandwiched between the opposed surfaces of the pair of housings, so that the position in the fitting direction is Deviation is regulated. Therefore, the seal member can be held in a regular mounting state.

In addition, the tab of the terminal fitting held in one of the pair of housings protrudes toward the other housing, and contacts the terminal fitting held in the other housing to electrically connect both terminal fittings. In each of the pair of housings, a wall surface along the fitting direction of the pair of housings may be formed in an annular shape surrounding the insertion hole of the tab.
According to such a structure, since the distance of the path | route which reaches | transmits the wall surface of a housing and reaches the insertion hole of a tab extends, waterproofness can be improved more.

The seal member may be provided with an annular seal wall that abuts the wall surface over the entire circumference when the pair of housings are fitted.
According to such a configuration, the periphery of the tab insertion hole can be sealed by the seal member.

Further, a housing groove for housing the seal wall may be formed on the facing surface, and a wall surface of the housing groove may be the wall surface.
The seal wall and the receiving groove may be provided with a pressing portion that presses the seal wall against the wall surface side by abutting each other. According to such a configuration, the seal wall can be more reliably pressed against the wall surface, so that the waterproof property can be further improved.

  Further, the seal member may have a plate portion along the facing surface, and the facing surface may come into contact with the plate portion when the pair of housings are fitted. According to such a structure, since the contact surface (seal surface) of a pair of housing and a sealing member increases, waterproofness can be improved more.

Further, at least one of the pair of housings is elastically deformed by being pressed by a terminal fitting in the middle of insertion and retracted into a bending space, and is elastically restored when the terminal fitting reaches a normal position. A resin lance that engages the terminal fitting and prevents the terminal fitting from being detached may be provided, and the sealing member may be provided with a protruding piece that is inserted into the bending space.
According to such a configuration, when the projecting piece enters the bending space, the resin lance is prevented from retracting into the bending space, and the terminal metal fitting prevention state is reliably maintained. Since such a protruding piece is provided on the seal member, for example, the number of parts and the number of assembling steps can be reduced as compared with the case where the member having the protruding piece and the sealing member are provided separately.

  ADVANTAGE OF THE INVENTION According to this invention, the waterproof connector which can hold | maintain a sealing member in a regular mounting state can be provided.

Sectional drawing which is the waterproof connector in Embodiment 1, Comprising: The state after a fitting Sectional view showing waterproof connector before mating Front view of seal member Sectional drawing which is the waterproof connector in Embodiment 2, Comprising: The state after a fitting

<Embodiment 1>
Hereinafter, Embodiment 1 which actualized this invention is demonstrated in detail, referring FIGS. 1-3.
The waterproof connector C in this embodiment includes a male housing 10 and a female housing 30 (a pair of housings) that can be fitted to each other, and a seal member 50 that seals between the housings 10 and 30 when fitted. . Hereinafter, in each component, the fitting surface side in both housings 10 and 30 will be described as the front, and the upper side in FIG. 1 will be referred to as the upper side and the lower side as the lower side.

  The male housing (one housing) 10 includes a male terminal accommodating portion 11 that accommodates a male terminal fitting (hereinafter referred to as a male terminal fitting 20), and a hood portion 12 that can be externally fitted to the female housing 30. It has.

  A male side cavity 13 into which the male terminal fitting 20 can be inserted from the rear is formed inside the male side terminal accommodating portion 11. The rear portion of the male cavity 13 is waterproofed by being blocked by a rubber plug 21 attached to the male terminal fitting 20.

  A male resin lance 14 that is elastically deformable in the vertical direction is formed on the upper wall of the male cavity 13. The male side resin lance 14 has a form extending in a cantilevered direction toward the front, and a bending space S is formed on the upper side thereof. The male-side resin lance 14 is elastically deformed upward by being pressed by the male terminal fitting 20 in the middle of insertion and retracted into the bending space S, and when the male terminal fitting 20 reaches the normal position, the male-side resin lance 14 elastically returns downward. Then, it is locked to the male terminal fitting 20 to prevent it from coming off.

  Further, a male side insertion hole 15 through which the tab 22 of the male terminal fitting 20 can be inserted is formed in the front end portion of the male side terminal accommodating portion 11 (front wall of the male side cavity 13) so as to penetrate in the front-rear direction. Yes. The tab 22 of the male terminal fitting 20 accommodated in the male cavity 13 protrudes forward (inside the hood portion 12) through the male insertion hole 15. A male-side seal wall 52 of a seal member 50 to be described later is accommodated in the front end surface of the male-side terminal accommodating portion 11 (a surface facing the female-side housing 30 and referred to as the male-side facing surface 16). A male housing groove 17 is formed. The male housing groove 17 will be described in detail later together with the description of the seal member 50.

  The hood portion 12 has a rectangular tube shape that opens to the front, and a portion corresponding to the lock arm 37 provided on the female housing 30 is widened upward. A step is formed.

  Further, on the inner side surface of the hood portion 12, a lock protrusion 18 that is engaged with the lock arm 37 of the female housing 30 is provided. When the lock arm 37 and the lock projection 18 are locked, the male and female housings 10 and 30 are held in a properly fitted state.

  The male terminal fitting 20 is formed by press-molding a metal plate, and in order from the front side, extends in the front-rear direction and has a tab 22 that is in conductive contact with the mating female terminal fitting 40, and a main body portion 23 that has a substantially box shape. And a barrel portion 24 that is crimped to the end of the electric wire W. The male terminal fitting 20 inserted into the male cavity 13 to the proper position is primarily locked by the locking protrusion of the male resin lance 14 being locked in the locking hole provided in the main body 23. To prevent it from coming off. In addition, a retainer 19 attached from the side to the male terminal accommodating portion 11 is secondarily locked to a rear end corner portion of the main body portion 23 of the male terminal fitting 20 inserted to a normal position in the cavity. As a result, the male terminal fitting 20 is double-stopped together with the male resin lance 14.

  The female housing (the other housing) 30 can accommodate a female terminal fitting (hereinafter referred to as a female terminal fitting 40) and can accommodate a female terminal fitting that can be fitted in the hood portion 12 of the male housing 10. The unit 31 is provided.

  A female side cavity 32 into which the female terminal fitting 40 can be inserted from the rear is formed inside the female side terminal accommodating portion 31. The rear portion of the female cavity 32 is waterproofed by being plugged by a rubber plug 44 attached to the female terminal fitting 40, as with the male cavity 13.

  On the upper wall of the female cavity 32, like the male cavity 13, it is elastically deformed upward by being pressed by the female terminal fitting 40 in the middle of insertion and retracted into the bending space S, and the female terminal fitting 40 is properly attached. When the position is reached, a female resin lance 33 is provided which elastically recovers downward and engages with the female terminal fitting 40 to prevent it from coming off.

  In addition, a female side insertion hole 34 through which the tab 22 of the male terminal fitting 20 can be inserted is formed in the front end portion (front wall of the female side cavity 32) of the female side terminal accommodating portion 31 so as to penetrate in the front-rear direction. Yes. The front side portion of the female side insertion hole 34 is formed with a guide surface 34A that is inclined so that the opening dimension gradually increases toward the front end. When the male side housing 10 and the female side housing 30 are fitted, the male terminal The tab 22 of the metal fitting 20 comes into contact with the guide surface 34A from the front and is guided by the inclination, and is smoothly drawn into the female cavity 32. A female-side seal wall 53 of a seal member 50 to be described later is accommodated in the front end surface of the female-side terminal accommodating portion 31 (a surface facing the male-side housing 10 and referred to as a female-side facing surface 35). A female side receiving groove 36 is formed. The female housing groove 36 will be described in detail later together with the description of the seal member 50.

  A lock arm 37 having a cantilever shape is provided on the upper surface of the female terminal accommodating portion 31 so as to be elastically deformable in the vertical direction. On the upper surface of the lock arm 37, when the male and female housings 10, 30 are properly fitted, a lock projection 38 is provided so as to be opposed to the lock projection 18 of the male housing 10 in the front-rear direction. ing.

  The female terminal fitting 40 is formed by bending a metal plate material punched into a predetermined shape, and in order from the front side, a main body portion 41 having a substantially box shape into which the tab 22 of the mating male terminal fitting 20 is inserted, and an electric wire And a barrel portion 42 that is crimped to the terminal of W. An elastic contact piece 43 is provided inside the main body 41 and is folded back from the front edge of the bottom plate. The tab 22 of the male terminal fitting 20 that has entered the inside of the main body portion 41 is elastically pinched between the elastic contact piece 43 and the ceiling plate of the main body portion 41, thereby the male terminal fitting 20 and the female terminal fitting 40. Are electrically connected.

  The waterproof connector C is provided with a seal member 50 that seals between the male and female housings 10 and 30 when fitted. The seal member 50 is formed separately from the male side housing 10 and the female side housing 30, and before the male side housing 10 and the female side housing 30 are fitted, the male side of the male side housing 10. Mounted on the opposing surface 16.

  The seal member 50 is formed of a synthetic resin material (for example, polypropylene or polybutylene terephthalate). The seal member 50 includes a plate portion 51 having a substantially square plate shape along the male facing surface 16, and a pair of front and rear seals protruding forward and rearward (in the fitting direction of the male and female housings 10 and 30) from the plate portion 51. Walls 52 and 53 are provided. Of the pair of seal walls 52, 53, the seal wall protruding rearward (male housing 10 side) of the plate portion 51 is the male seal wall 52, and the seal wall protruding forward (the opposite side) is the female seal. This is called a wall 53.

  The plate portion 51 is formed in a plate shape having a size that covers substantially the entire surface of the male-side facing surface 16 (the rear end surface of the hood portion 12) of the male-side housing 10. A substantially rectangular through hole 54 is formed at the center of the plate portion 51, and the tab 22 of the male terminal fitting 20 can protrude forward of the plate portion 51 through the through hole 54. The through hole 54 has an opening size equivalent to the opening size (maximum opening size) at the front end of the female side insertion hole 34.

  The male-side seal wall 52 and the female-side seal wall 53 have an annular shape that surrounds the entire circumference of the through hole 54 (see FIG. 3). The female side seal wall 53 is made slightly smaller than the male side seal wall 52. In addition, the male side seal wall 52, the female side seal wall 53, and the through-hole 54 are formed coaxially.

  The wall thickness dimension of the male-side seal wall 52 and the projecting dimension from the plate portion 51 are constant over the entire circumference. The male side seal wall 52 is provided with a male side protruding portion 55 that protrudes outward. The male protruding portion 55 is formed continuously along the entire circumference along the tip edge of the male sealing wall 52. The protruding end surface of the male side protruding portion 55 has an arc shape.

  The wall thickness dimension of the female-side seal wall 53 and the projecting dimension from the plate portion 51 are constant over the entire circumference, like the male-side seal wall 52. The female-side seal wall 53 is provided with a female-side protruding portion 56 that protrudes outward, like the male-side seal wall 52. The female-side protruding portion 56 is formed continuously along the entire periphery along the distal end edge of the female-side seal wall 53. Note that the protruding end surface of the female-side protruding portion 56 has an arc shape.

  The wall thickness dimension of the male-side seal wall 52 and the wall thickness dimension of the female-side seal wall 53 are equal, and the protruding dimension of the male-side seal wall 52 from the plate portion 51 and the plate portion of the female-side seal wall 53 are the same. The protruding dimension from 51 is equivalent. Both the male-side seal wall 52 and the female-side seal wall 53 are connected to the plate portion 51 in a state before the seal member 50 is attached to the male-side housing 10 and the female-side housing 30 (a state in which the seal member 50 exists alone). It is almost vertical.

  On the male facing surface 16 of the male housing 10 and the female facing surface 35 of the female housing 30, the male housing groove 17 and the female housing are respectively accommodated with the female sealing wall 53 and the male sealing wall 52. A groove 36 is formed as a recess. The male housing groove 17 and the female housing groove 36 are recessed in a substantially vertical direction (a direction substantially parallel to the fitting direction of the male and female housings 10 and 30) with respect to the male facing surface 16 and the female facing surface 35, respectively. It is out.

The male side receiving groove 17 is formed in an annular shape having a substantially square shape surrounding the male side insertion hole 15 along the outer peripheral edge of the male side facing surface 16, and is located on the outer side in the width direction with respect to the male side cavity 13. .
The male housing groove 17 has a depth dimension larger than the protruding dimension of the male seal wall 52. The male housing groove 17 has a width dimension that is the same as or slightly smaller than the thickness dimension of the male seal wall 52 including the male protrusion 55. In addition, the width dimension of the male side accommodation groove | channel 17 is made constant in the depth direction and the circumferential direction.
The inner wall surface 17 </ b> B and the outer wall surface 17 </ b> A of the male side receiving groove 17 are substantially parallel to each other, and both are formed in an annular shape surrounding the male side insertion hole 15.

  On the other hand, the female-side receiving groove 36 is located at the approximate center between the outer peripheral edge of the female-side facing surface 35 and the female-side insertion hole 34 and is formed in an annular shape having a substantially rectangular shape surrounding the female-side insertion hole 34. It is located outside of the side cavity 32 in the width direction.

The female side receiving groove 36 has a depth dimension larger than the protruding dimension of the female side sealing wall 53, and the depth dimension is equal to the depth dimension of the male side receiving groove 17. The female housing groove 36 has a width dimension that is the same as or slightly smaller than the thickness dimension of the female seal wall 53 including the female projecting portion 56. In addition, the width dimension of the female side accommodation groove | channel 36 is made constant in the depth direction and the circumferential direction.
The inner wall surface 36 </ b> B and the outer wall surface 36 </ b> A of the female side receiving groove 36 are substantially parallel to each other, and both are formed in an annular shape surrounding the female side insertion hole 34.

  When the male side sealing wall 52 is received in the male side receiving groove 17, the male side protruding portion 55 comes into contact with the outer wall surface 17 </ b> A of the male side receiving groove 17. The male side sealing wall 52 is elastically deformed so as to fall obliquely inward and is pressed against the inner wall surface 17B of the male side accommodation groove 17. The outer wall surface 17A and the male protrusion 55 of the male housing groove 17 constitute a pressing portion of the present invention.

  Further, when the female side sealing wall 53 is accommodated in the female side accommodating groove 36, the female side protruding portion 56 comes into contact with the outer wall surface 36 </ b> A of the female side accommodating groove 36, whereby the distal end side of the female side sealing wall 53 is inward. The female side sealing wall 53 is elastically deformed so as to fall obliquely inward and is pressed against the inner wall surface 36B of the female side receiving groove 36. Note that the outer wall surface 36A of the female-side receiving groove 36 and the female-side protruding portion 56 constitute a pressing portion of the present invention.

Next, an example of a method for fitting the male housing 10 and the female housing 30 will be described.
First, prior to the fitting of both housings 10 and 30, the seal member 50 is attached to the male housing 10.

  The seal member 50 is pushed into the hood portion 12 with the male side seal wall 52 of the seal member 50 facing the back side of the hood portion 12. Then, the seal member 50 moves in the hood portion 12 while maintaining the shape of a single unit, and the male side protruding portion 55 of the male side sealing wall 52 eventually reaches the front end of the wall surface 17A outside the male side receiving groove 17. Abut. When the seal member 50 is further pushed inward, the male seal wall 52 is elastically deformed diagonally inward by the contact between the male protrusion 55 and the outer wall surface 17A of the male housing groove 17, and the distal end thereof is male. In a state of being in contact with the inner wall surface 17 </ b> B of the side receiving groove 17, it is inserted into the back side of the male side receiving groove 17. And when the front-end | tip of the male side sealing wall 52 reaches the back end vicinity of the male side accommodation groove | channel 17, the board surface of the board part 51 will be in the state contact | abutted to the male side opposing surface 16 over the whole. Thus, the mounting of the seal member 50 to the male housing 10 is completed. At this time, the through hole 54 of the plate portion 51 of the seal member 50 is arranged coaxially with the male side insertion hole 34, and the male side seal wall 52 extends over the entire circumference on the inner wall surface 17 </ b> B of the male side accommodation groove 17. It will be in the state which adhered to.

Next, the female housing 30 is fitted into the male housing 10.
The female housing 30 is pushed toward the back side of the hood portion 12 of the male housing 10. Then, at the tip of the seal member 50 mounted in the back of the hood portion 12 (female-side protruding portion 56 of the female-side seal wall 53), the female-side facing surface 35 of the female-side housing 30 (outside the female-side receiving groove 36). The front end of the wall surface 36A abuts. When the female housing 30 is further pushed inward, the female seal wall 53 is elastically deformed obliquely inward by the contact between the outer wall surface 36A of the female housing groove 36 and the female projection 56, and the female housing is received. The female side sealing wall 53 moves forward with the female side sealing wall 53 in contact with the inner wall surface 36 </ b> B of the groove 36, and the female side sealing wall 53 is relatively inserted into the inner side of the female side receiving groove 36. Further, the tab 22 of the male terminal fitting 20 is inserted into the main body 41 of the female terminal fitting 40 through the female insertion hole 34 of the female housing 30. Eventually, the male housing 10 and the female housing 30 reach a proper fitting state, and the male and female terminal fittings 20 and 40 are in a normal connection state, and at the same time, they are bent and deformed so as to get over the lock protrusion 18 in the middle of fitting. The lock arm 37 that has been moved over the lock projection 18 and elastically restored, and the male and female housings 10 and 30 are locked in the proper fitted state.

  When the male and female housings 10 and 30 are properly fitted, the female-side facing surface 35 of the female-side housing 30 is in contact with the plate surface of the plate portion 51 of the seal member 50 over substantially the entire seal. The plate portion 51 of the member 50 is sandwiched between the male facing surface 16 and the female facing surface 35 from the front and back, and is in close contact with the male facing surface 16 and the female facing surface 35. Further, the female-side seal wall 53 is in close contact with the inner wall surface 36B of the female-side receiving groove 36 over the entire circumference. Thus, in the normal fitting state of the male and female housings 10 and 30, the contact surface between the male seal wall 52 and the male housing groove 17, the contact surface between the plate portion 51 and both the male and female housings 10 and 30, The contact surface between the female-side seal wall 53 and the female-side receiving groove 36 is a seal surface, and the space between the male and female housings 10 and 30 is sealed.

According to the first embodiment configured as described above, the following effects can be obtained.
The waterproof connector C of the first embodiment is attached to the male and female housings 10 and 30 that can be fitted to each other, and the male facing surface 16 and the female facing surface 35 that face each other in the male and female housings 10 and 30 when fitted. And a synthetic resin sealing member 50 that seals between the male and female housings 10 and 30. Here, when the seal member is made of rubber, it is more easily deformed than the synthetic resin seal member 50, so that the correct shape and posture are maintained at the back end of the hood portion 12 of the male housing 10. It is difficult to wear. However, in this embodiment, since the sealing member 50 is made of synthetic resin, the inside of the hood portion 12 is moved to the back side while maintaining a certain shape, and the male side sealing wall 52 is smoothly moved to the male side receiving groove. 17 and can be put into a correct wearing state. Moreover, since the sealing member 50 of this embodiment is pinched | interposed into the male side opposing surface 16 and the female side opposing surface 35 at the time of fitting of the male and female housings 10 and 30, it is displaced in the front-rear direction (fitting direction). Is regulated. Therefore, according to the waterproof connector C of the present embodiment, the seal member 50 can be held in a regular mounting state.

Each of the male and female housings 10 and 30 has a wall surface (a wall surface 17B inside the male housing groove 17 and a wall surface 36B inside the female housing groove 36) along the fitting direction of the male and female housings 10, 30. The male side insertion hole 15 and the female side insertion hole 34 are formed in an annular shape.
Accordingly, the male side insertion hole 15 or the female side insertion hole 34 is transmitted from the inner peripheral surface of the hood portion 12 of the male housing 10 and the outer peripheral surface of the female housing 30 to the male facing surface 16 or the female facing surface 35. Since the distance of the route to reach is increased, the waterproof property can be further enhanced.

  The seal member 50 is provided with an annular male side seal wall 52 and female side seal wall 53 that are in contact with the wall surfaces 17B and 36B over the entire circumference when the male and female housings 10 and 30 are fitted. Thereby, the periphery of the male insertion hole 15 and the female insertion hole 34 can be sealed by the seal member 50.

  Further, the male side seal wall 52 and the male side accommodation groove 17 are in contact with each other so as to press the male side seal wall 52 against the inner wall surface 17B of the male side accommodation groove 17 and the male side accommodation groove. The outer wall surface 17A of the groove 17 is provided, and the female side sealing wall 53 and the female side receiving groove 36 are brought into contact with each other to press the female side sealing wall 53 against the inner wall surface 36B of the female side receiving groove 36. The female side protruding portion 56 and the outer wall surface 36A of the female side receiving groove 36 are provided. Thereby, since the male side sealing wall 52 and the female side sealing wall 53 can be more reliably pressed against the wall surface 17B of the male side accommodation groove 17 and the wall surface 36B of the female side accommodation groove 36, waterproofness can be improved. .

  Further, the seal member 50 has a plate portion 51 along the male facing surface 16 and the female facing surface 35. When the male and female housings 10 and 30 are fitted, the male facing surface 16 and the female facing surface 35 are The plate portion 51 is in contact with the plate portion 51. Thereby, since the surface (seal surface) where male and female housings 10 and 30 and seal member 50 contact increases, waterproofness can be improved more. For example, when the seal member is made of rubber, when the male and female housings are fitted, the male and female housings are subjected to the elastic force of the seal member, so that both the housings are still in a proper fitted state. In spite of this, there is a risk of being mistakenly fitted and being left in a semi-fitted state. However, when the seal member 50 is made of a synthetic resin as in the present embodiment, the possibility of such semi-fitting can be prevented.

  By the way, for example, when the electric wire W is an aluminum electric wire provided with a core wire made of aluminum or aluminum alloy, and the male and female terminal fittings 20, 40 are made of copper alloy or the like (that is, the core wire of the electric wire W and the terminal fittings 20, 40 In the case where the metal is formed of different metals), there is a concern that water may intervene in the connection part between the two metals, so that both metals dissolve as ions in the water and electrochemical corrosion occurs due to electrochemical reaction. Is done. In such a case, even in a place where a non-waterproof connector is conventionally used (a place where water is not usually covered), contact with a slight amount of water such as dripping of condensed water, for example. In order to prevent this, there is a demand to use a connector having a certain degree of waterproofness. In such a case, it is effective to use the waterproof connector C according to the present embodiment instead of the non-waterproof connector because high waterproofness can be secured and the occurrence of electrolytic corrosion can be prevented.

<Embodiment 2>
Next, a waterproof connector 60 according to a second embodiment embodying the present invention will be described with reference to FIG.
The waterproof connector 60 of the present embodiment is different from that of the first embodiment in that the seal member 61 is provided with a protruding piece 62 that is inserted into the bending space S. In addition, the same code | symbol is attached | subjected to the structure similar to Embodiment 1, and the overlapping description is abbreviate | omitted.

  As in the first embodiment, the waterproof connector 60 according to the present embodiment includes a male housing 10 and a female housing 30 that can be fitted to each other, and a seal member 61 that seals between the housings 10 and 30 when fitted. I have. As in the first embodiment, the male housing 10 is elastically deformed by being pressed by the male terminal fitting 20 being inserted and retracted into the bending space S, and the male terminal fitting 20 reaches the normal position. Then, a male side resin lance 14 is provided which is elastically restored and is locked to the male terminal fitting 20 to prevent the male terminal fitting 20 from coming off. Similarly to the first embodiment, the male resin lance 14 has a form extending in a cantilevered direction toward the front, and a bending space S is formed on the upper side thereof. The bending space S is opened in front of the male terminal accommodating portion 11, and an inlet 63 into which the projecting piece 62 can be inserted from the front is formed on the front wall of the male terminal accommodating portion 11. The inlet 63 has an opening dimension equivalent to the height dimension of the bending space S (the vertical distance between the male resin lance 14 in the natural state and the upper wall of the male cavity 13). The inlet 63 is located on the radially inner side of the male housing groove 17.

  As in the first embodiment, the seal member 61 is made of a synthetic resin material, and has a plate portion 51 having a substantially square plate shape along the male-side facing surface 16, and a male-side seal protruding from the plate portion 51 in the front-rear direction. A wall 52 and a female seal wall 53 are provided. Similarly to the first embodiment, the seal member 61 is attached to the male-side facing surface 16 of the male-side housing 10 before the male-side housing 10 and the female-side housing 30 are fitted together.

  The seal member 61 is provided with a projecting piece 62 that is inserted into the bending space S of the male resin lance 14. The projecting piece 62 is formed in a plate shape elongated in the front-rear direction, and has a thickness dimension that fits in the bending space S with substantially no gap in the vertical direction. The protruding piece 62 protrudes rearward from the rear side surface (the plate surface on the male side facing surface 16 side) of the plate portion 51. The projecting piece 62 is substantially perpendicular to the plate surface of the plate portion 51.

  In order to attach the seal member 61 to the male housing 10, the male seal wall 52 is pushed toward the back side of the hood portion 12 as in the first embodiment. Then, the projecting piece 62 is inserted into the inlet 63 and enters the bending space S straight from the inlet 63. Similarly to the first embodiment, the male side sealing wall 52 is elastically deformed diagonally inward by the contact between the male side projecting portion 55 and the outer wall surface 17A of the male side receiving groove 17, so that the inner side of the male side receiving groove 17 is inside. In the state where it is in contact with the wall surface 17 </ b> B, it is inserted into the back of the male-side receiving groove 17. And when the front-end | tip of the protrusion 62 reaches the back | inner side rather than the center of the front-back direction of the male side resin lance 14, the board part 51 will be in the state contact | abutted to the male side opposing surface 16 of the male side housing 10, and will be in the male side. The mounting of the seal member 61 to the housing 10 is completed. Thereafter, as in the first embodiment, the female housing 30 is fitted into the male housing 10 so that the male and female housings 10 and 30 are properly fitted, and the seal member is provided between the male and female housings 10 and 30. 61 is sealed.

  As described above, in the present embodiment, the waterproof connector 60 includes the male and female housings 10 and 30 that can be fitted to each other, and the male facing surface 16 and the female facing surface that face each other when the male and female housings 10 and 30 are fitted. And the synthetic resin seal member 61 that seals between the male and female housings 10 and 30. Thus, as in the first embodiment, the seal member 61 is held in a regular mounting state. Can do.

  In addition, since the projecting piece 62 inserted into the bending space S is provided on the seal member 61, the male side resin lance 14 retracts into the bending space S when the projecting piece 62 enters the bending space S. Therefore, the male terminal fitting 20 can be reliably kept from being detached. And since such a protrusion 62 is provided in the sealing member 61, compared with the case where the member which has a protrusion and a sealing member are provided separately, for example, a number of parts and an assembly man-hour can be reduced.

<Other embodiments>
The present invention is not limited to the embodiments 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) In the above embodiment, the seal member 50 (61) is attached to the male housing 10 prior to the fitting of the male and female housings 10 and 30, but the female housing 30 is opposite to this. It is good also as what is attached to.
(2) In the above embodiment, the seal member 50 (61) has the plate portion 51. However, the present invention is not limited to this, and the seal member does not necessarily have the plate portion. The male seal wall and the female seal wall may have a cylindrical shape that is continuous in the front-rear direction.
(3) In the said embodiment, although the sealing member 50 (61) has the male side sealing wall 52 and the female side sealing wall 53, it is not restricted to this, For example, a sealing member has only a board part. It may be a thing.
(4) In the above embodiment, the male facing surface 16 and the female facing surface 35 are in contact with the plate portion 51 when the male and female housings 10 and 30 are fitted. A gap may be provided between both or both of the side facing surface and the female side facing surface and the plate portion.

(5) In the above embodiment, the male-side seal wall 52 and the female-side seal wall 53 are accommodated in the male-side accommodation groove 17 and the female-side accommodation groove 36, respectively, and come into contact with the inner wall surfaces 17B and 36B. However, for example, such a housing groove may not be provided, and the male-side seal wall and the female-side seal wall may be in contact with a wall surface that is open to the outside.
(6) In the above embodiment, the male side sealing wall 52 and the female side sealing wall 53 are provided with the male side protruding part 55 and the female side protruding part 56, respectively. Instead of providing protrusions on the side seal wall and female seal wall side, protrusions may be provided on the male side receiving groove and female side receiving wall side, and the male side receiving groove and female side receiving groove on the back side. It is good also as what the wall surface of the back end part contact | abuts to a male side sealing wall and a female side sealing wall by forming in the shape which becomes narrow toward it.
(7) In the second embodiment, the seal member 61 is provided with the projecting piece 62 to be inserted into the bending space S of the male resin lance 14. However, the present invention is not limited thereto. Only the protruding piece inserted into the bending space of the female resin lance may be provided, or both the protruding piece inserted into the bending space of the male side and the protruding piece inserted into the bending space of the female side are provided. Also good.

C, 60 ... Waterproof connector S ... Deflection space 10 ... Male housing (one housing)
DESCRIPTION OF SYMBOLS 14 ... Male side resin lance 15 ... Male side insertion hole 16 ... Male side opposing surface 17 ... Male side accommodation groove | channel 17A ... Outer wall surface (pressing part)
17B ... Inner wall surface (wall surface along the fitting direction of a pair of housings)
20 ... Male terminal fitting 22 ... Tab 30 ... Female housing (the other housing)
34 ... Female-side insertion hole 35 ... Female-side facing surface 36 ... Female-side receiving groove 36A ... Outer wall surface (pressing portion)
36B ... inner wall surface (wall surface along the fitting direction of a pair of housings)
DESCRIPTION OF SYMBOLS 40 ... Female terminal metal fittings 50, 61 ... Seal member 51 ... Plate part 52 ... Male side sealing wall 53 ... Female side sealing wall 55 ... Male side protrusion part (pressing part)
56 ... Female side protrusion (pressing part)
62 ... Projection

Claims (6)

A pair of housings that can be fitted together;
A synthetic resin sealing member that is mounted on opposing surfaces facing each other when fitted in the pair of housings and seals between the pair of housings;
I have a,
The tab of the terminal fitting held in one of the pair of housings protrudes toward the other housing, and contacts the terminal fitting held in the other housing so that both terminal fittings are electrically connected. Is,
In each of the pair of housings, a wall surface along the fitting direction of the pair of housings is formed in an annular shape surrounding the insertion hole of the tab,
The seal member is provided with an annular seal wall that contacts the wall surface over the entire circumference when the pair of housings are fitted.
An accommodation groove for accommodating the seal wall is formed on the facing surface,
Waterproof connector wall surface of the accommodating groove that is with the wall surface. A pair of housings that can be fitted together;
A synthetic resin sealing member that is mounted on opposing surfaces facing each other when fitted in the pair of housings and seals between the pair of housings;
Have
At least one of the pair of housings is elastically deformed by being pressed by a terminal fitting in the middle of insertion and retracted into a bending space, and is elastically restored when the terminal fitting reaches a normal position. A resin lance is provided to lock the bracket and prevent it from coming off.
The waterproof connector, wherein the seal member is provided with a projecting piece inserted into the bending space. The tab of the terminal fitting held in one of the pair of housings protrudes toward the other housing, and contacts the terminal fitting held in the other housing so that both terminal fittings are electrically connected. Is,
The waterproof connector according to claim 2 , wherein a wall surface along a fitting direction of the pair of housings is formed in each of the pair of housings in an annular shape surrounding the insertion hole of the tab. The waterproof connector according to claim 3 , wherein the seal member is provided with an annular seal wall that abuts the wall surface over the entire circumference when the pair of housings are fitted. An accommodation groove for accommodating the seal wall is formed on the facing surface,
The waterproof connector according to claim 4 , wherein a wall surface of the housing groove is the wall surface. The waterproof connector according to claim 1 , wherein the sealing wall and the receiving groove are provided with a pressing portion that presses the sealing wall against the wall surface side by contacting each other.

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