JP3367463B2 - Joint connector - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint connector.

[0002]

2. Description of the Related Art Conventionally, as a joint connector, there is one disclosed in JP-A-9-213436.
This is composed of a housing into which a plurality of terminal fittings are inserted from the rear, and a busbar body in which a holding body holds a busbar with a plurality of tab pieces protruding from the side edge of the connecting band. By inserting the bus bar body into and connecting the tab pieces to the terminal fittings, the terminal fittings are short-circuited. This busbar body is
Since the tab pieces are protruded from the holder, that is, the tab pieces are exposed to the outside, they are exposed when the busbar body is packed in a bag or box for transportation or assembled to the housing. There is a possibility that the tab piece being engaged may be caught by another bus bar body or the like, resulting in deformation or breakage.

As a countermeasure, it is conceivable to use a bus bar body in which the holder has a tubular shape and the tab pieces are housed in the tubular portion. As a result, the tab piece is protected by the tubular portion, so there is an advantage that deformation of the tab piece and the like can be prevented. It is also possible to detect the half-insertion of the terminal fitting by the bus bar body. In other words, if the structure is such that the cylindrical portion covers the housing and the lance for retaining the inserted terminal fittings is exposed flush with the outer surface of the housing, all terminal fittings are normally inserted. While the cylindrical part can be externally fitted to the housing without interfering with the lance, when there is a half-inserted terminal fitting, the lance protrudes from the outer surface of the housing and the opening edge of the cylindrical part is inserted there. The contact state of the terminal fitting can be detected by the presence or absence of the interference of the cylindrical portion with the lance.

[0004]

Generally, in a connector in which the front retainer detects the half-insertion of the terminal fitting, the lance is provided at a position not exposed to the outer surface of the housing, and the inner wall is formed in the housing so as to correspond to the lance. With the structure in which the lance is provided, when the retainer abuts against the bent lance in the half-inserted state, the lance is brought into contact with the inner wall to prevent the lance from excessively bending beyond the elastic limit. It has become.

However, in the case where the lance is exposed to the outer surface of the housing and the lance is elastically flexed outward when half-inserted as described above, a means for preventing excessive flexure cannot be provided. Therefore, if the opening edge of the tubular part comes into contact with the lance protruding,
It is feared that the lance will be excessively bent. The present invention was devised in view of the above circumstances, and an object thereof is to restrict excessive bending of a lance when a bus bar body is assembled in a state where a terminal fitting in a semi-inserted state exists.

[0006]

According to a first aspect of the present invention, there is provided a housing having a plurality of cavities into which terminal fittings are inserted, and the terminal fittings are inserted into the cavities to lock the terminal fittings. It can be retained,
A lance that is exposed to the outer surface of the housing and that is elastically displaceable to the outside, and a plurality of tab pieces are housed in a tubular portion, and the lance is assembled to the housing so that the tubular portion is externally fitted. A bus bar body that short-circuits the terminal fittings by bringing a tab piece into contact with the terminal fittings, and when the terminal fitting is properly inserted, the lance does not interfere with the tubular portion. When the bus bar body is assembled to the housing at a position where it is allowed to be assembled and the terminal fitting in a half-inserted state is present, the lance elastically displaces to the outside of the housing due to interference with the terminal fitting. A joint connector in which assembly of the busbar body is restricted by abutting the tubular portion on a tip portion of a lance,
An inner corner edge at the tip of the tubular portion is a regulation corner edge.
In addition, the outer edge is used as a balancing edge.
Ri, the tip of the lance, the lance is elastically displaced by being deflection excessive contactable with the restricting angle edge while regulating the slope in the elastic limit is formed, the excessive deformation preventing slope, the The lance inclines in a direction in which it is pressed in the elastic return direction by the abutting force from the cylindrical portion associated with the assembly of the busbar body, and the tip of the lance has the regulating member.
In the state where the corner edge is in contact with the excessive deflection regulation slope.
Forming a slope for balancing that allows the contact of the balancing corner edge
This balance slope is used for the abutting force from the cylinder.
As a result, the lance is pressed in the direction to increase its elastic displacement.
Is inclined toward the outside and elastically bends to the outside of the housing.
The process in which the tubular portion abuts against the lance being viewed
Then, the balancing corner edge contacts the balancing slope and
Due to the inclination of the balancing slope, the lance is removed from the terminal fitting.
After being displaced outward so as to be separated,
The corner edge is in contact with the excessive deflection limiting slope .

The invention of claim 2 is the same as the invention of claim 1.
And in a state where the tubular portion is in contact with both the excessive deflection regulating slope and the balancing slope, an acute angle side of the abutting direction of the tubular portion with the assembly of the bus bar body and the excessive deflection regulating slope. The angle is set smaller than that of the balanced slope.

[0008]

[Advantageous Effects of the Invention] [Invention of Claim 1] As a means for restricting excessive bending of the lance beyond the elastic limit, the cylindrical portion is made to abut against the excessive bending restriction slope of the lance. Even if the structure is exposed to the outer surface of the housing and elastically displaced outward, it is possible to prevent the lance from excessively bending. Further, when the tubular portion of the busbar body comes into contact with both the excessive deflection regulation slope and the balancing slope, the lance is in a balanced state and displacement is regulated, and further assembly of the busbar body is regulated. Therefore,
Even if the bus bar body is strongly pressed against the lance, the lance is displaced in the elastic return direction and excessively pressed against the terminal fittings.
That is avoided.

[Invention of Claim 2] Since the acute angle between the abutting direction of the tubular portion and the excessive deflection regulating slope is set smaller than that of the balanced slope, the pressing force in the elastic return direction against the lance is elastic. Greater than the pressing force in the displacement direction. Therefore, the excessive bending of the lance can be reliably regulated.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] A first embodiment of the present invention will be described below with reference to FIGS. The joint connector of this embodiment is a housing 1
0, a plurality of terminal fittings 20, a seal member 30, a seal holder 40, two bus bar bodies 50, and a cap 60, and the plurality of terminal fittings 20 are short-circuited by a plurality of bus bars 55 in a predetermined short-circuit pattern.

<Housing 10> The housing 10 is made of a synthetic resin material, and the cavities 11 of a plurality of chambers penetrating in the front-rear direction are divided into upper and lower stages in the housing 10, and each stage is aligned in a horizontal row at a constant pitch. Is formed. The substantially first half region of the upper cavity 11 and the substantially first half region of the lower cavity 11 are respectively formed in the housing 10.
Is opened to the upper and lower surfaces of each of the lances, and a lance 12 is formed in each of the open portions so as to project forward in a cantilever manner.
In addition, the upper row of cavities 11 and the lower row of cavities 11
Between the row and the row, a laterally long slit-shaped recess 13 for allowing the peripheral wall of the bus bar body 50 to enter is formed. still,
The upper surface wall and the lower surface wall of the recess 13 are partially cut out so as to communicate with the upper cavity 11 and the lower cavity 11, respectively.

Now, the lance 12 will be described in detail. The lance 12 holds the terminal fitting 20 inserted in the cavity 11 in a retaining state, and also has a function of detecting the insertion status of the terminal fitting 20 by cooperating with the tubular portion 53 of the bus bar body 50 as described later. Demonstrate. That is, the lance 12 is arranged so as to be exposed at the outer surface 10A of the housing 10, and the lance 12 is in a free state in a state where the terminal fitting 20 is not inserted into the cavity 11 and a state where it is properly inserted. The outer surface 12A of the lance 12 (the upper surface in FIGS. 8 to 10) is the outer surface 10 of the housing 10.
It is flush with A. In this state, the retainer protrusion 12B formed at the tip (front end) of the lance 12 is attached to the terminal fitting 20.
The terminal fitting 20 is locked in the locking hole 24 of FIG. Further, when the terminal fitting 20 is in the half insertion position that does not reach the regular insertion position, the retaining projection 12B interferes with the outer surface of the fitting portion 21 of the terminal fitting 20 and thus the lance 12 is elastically displaced outward. A portion of the lance 12 on the outer surface 12A side projects more than the outer surface 10A of the housing 10.
In this state, in the process of assembling the busbar body 50 into the housing 10, the tubular portion 53 of the busbar body 50 hits against the front end portion of the lance 12, and the further assembling operation of the busbar body 50 is restricted.

On the front end face of the lance 12, the excessive deflection limiting slope 1 for preventing the lance 12 from excessively deflecting beyond its elastic limit when the tubular portion 53 is abutted.
2C is formed. Similarly, the tip of the lance 12 is also formed with a balancing slope 12D that is inclined in a direction different from that of the excessive bending restriction slope 12C. That is, Lance 12
The front end surface of the is formed in a concave shape in a V shape when viewed from the side, the inner region (on the side of the terminal fitting 20) is the excessive deflection limiting slope 12C, and the outer region is the balancing slope 12D.

The excessive deflection limiting slope 12C is designed so that the cylindrical portion 53 can be abutted against the lance 12 while the lance 12 is elastically displaced within the elastic limit. The excessive deflection limiting slope 12C has a cylindrical portion 53 associated with the assembly of the bus bar body 50.
The lance 12 is inclined in such a direction that it is pressed in its elastic return direction (downward in FIGS. 8 to 10) when it receives an abutting force from. The balancing slope 12D is configured such that the cylinder portion 53 can be abutted in a state in which the lance 12 is elastically displaced within the elastic limit similarly to the excessive deflection regulation slope 12C, but the manner of inclination is excessive. Contrary to the bending regulation slope 12C, the lance 12 increases its elastic displacement when receiving the abutting force from the tubular portion 53 associated with the assembly of the bus bar body 50 (upward in FIGS. 8 to 10). It is inclined so that it can be pressed. When the tubular portion 53 is in contact with the excessive deflection regulation slope 12C, the tubular portion 53 is always in contact with the balancing slope 12D.

Further, comparing the inclination angles of the excessive deflection restricting slope 12C and the balancing slope 12D, when the tubular portion 53 is in contact with both the excessive flexing restricting slope 12C and the balancing slope 12D, the assembly of the bus bar body 50 is shown. The angle α on the acute angle side between the abutting direction of the tubular portion 53 and the excessive deflection regulating slope 12C accompanying attachment is set to be smaller than the angle β of the balancing slope 12D. <Terminal metal fitting 20> The terminal metal fitting 20 is formed by bending a metal plate material punched into a predetermined shape, and the substantially first half portion thereof is a rectangular tube-shaped fitting portion 21 opening in both front and rear directions, and the substantially second half portion thereof. Is an electric wire connecting portion 22 to which the electric wire 25 is crimped.
It is said that. Inside the fitting portion 21, the bus bar body 50
An elastic contact piece 23 for elastically contacting the tab piece 57 is formed, and a locking hole 24 for locking the lance 12 of the housing 10 is formed in the peripheral wall plate of the fitting portion 21. 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 the rear side. Immediately before the terminal fitting 20 reaches the regular insertion position, the lance 12 interferes with the outer surface of the peripheral wall of the fitting portion 21, so that the lance 12 is elastically displaced so as to project to the outside of the housing 10, and the terminal fitting 20 reaches the regular insertion position. And the lance 12 elastically returns to engage with the engaging hole 24,
As a result, the terminal fitting 20 is held in the disengaged state. When the terminal fitting 20 is inserted into the housing 10, the insertion posture with respect to the upper cavity 11 and the insertion posture with respect to the lower cavity 11 are vertically symmetrical.

<Seal Member 30> The seal member 30 is made of rubber and is in the shape of an oval thick plate.
It is assembled so as to be sandwiched between the rear end surface and the front end surface of the seal holder 40. The seal member 30 is formed with a plurality of seal holes 31 opening on both front and rear surfaces thereof so as to be aligned with the respective cavities 11 of the housing 10. The seal hole 31 has a circular shape, and three lip portions 31A having a mountain-shaped cross section are formed in the inner peripheral surface in the circumferential direction, and the inner diameter of the lip portion 31A is set smaller than the outer diameter of the electric wire 25. There is. 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 to seal between the electric wire 25 and the seal hole 31. Further, on the outer periphery of the seal member 30, three lip portions 34 having a substantially semicircular cross section are formed in the circumferential direction. The lip portion 34 makes elastic contact with the inner circumference of the cap 60 to seal between the outer circumference of the seal member 30 and the inner circumference of the cap 60.

<Seal holder 40> Seal holder 40
Is made of a synthetic resin material, has an oval thick plate shape as a whole like the seal member 30, and exerts a function of holding the seal member 30 between the rear surface of the housing 10 and the seal member 30. Incidentally, the lip portion 34 on the outer periphery of the seal member 30.
Is one size larger than the outer circumference of the seal holder 40. The seal holder 40 is formed with a plurality of terminal insertion holes 41 penetrating between the front and rear end surfaces thereof so as to be aligned with the cavities 11 and the seal holes 31. The terminal fitting 20 is inserted through the terminal insertion hole 41 and accommodated in the cavity 11.

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 thereof. The lock protrusion 44 restricts 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. In addition, a pair of left and right symmetrical index protrusions 45 are formed in the arcuate regions at both the left and right ends on the outer circumference of the seal holder 40, the index protrusions 45 being symmetrical with respect to 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.

<Bus Bar Body 50> The bus bar body 50 is formed by integrating a synthetic resin holder 51 and a metal bus bar 55 by insert molding. Holder 51
Is composed of a horizontally long plate-shaped holding portion 52 and a flat tubular portion 53 protruding rearward (direction toward the housing 10) from the plate-shaped holding portion 52. The bus bar 55 is formed by projecting a plurality of tab pieces 57 in parallel in a cantilever manner from the side edge of the strip-shaped carrier 56 so that the carrier 56 is along the plate-shaped holding portion 52 and the tab pieces 57 are inside the tubular portion 53. It is held in the state of facing. A punching hole 54 is opened in the plate-shaped holding portion 52 at a position corresponding to a gap between adjacent tab 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 the portion facing 54 with a punch and a die according to 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 tab pieces 57, and the terminal fittings 20 are connected to each connecting piece, whereby the plurality of terminal fittings 20 are short-circuited for each bus bar 55.

The bus bar body 50 is assembled from the front of the housing 10 so that the upper row 11 and the lower row 11 of the cavities are individually covered with the tubular portions 53. In the assembled state, each tab piece 57 is connected to a terminal. It is connected to the metal fitting 20. The bus bar body 50 can identify the short circuit pattern by changing the color of the holding body 51.
Further, the shape of the holder 51 is vertically asymmetric. Therefore, by confirming the color and the direction, the predetermined bus bar body 50 can be assembled in the housing 10 in the correct direction, and the group of terminal fittings 20 can be short-circuited in the correct short-circuit pattern.

Guide grooves 58 in the front-rear direction are formed at both left and right ends of the tubular portion 53, and one front and rear locking projections 17 and 18 corresponding to the guide grooves 58 are formed in the housing 10. The rear end of the tubular portion 53 and the rear end edge of the guide groove 58 are locked so as to be sandwiched between the locking protrusions 17 and 18, whereby the bus bar body 50 is held at the temporary locking position.
Further, both front and rear edges of the guide groove 58 are formed on both the locking projections 17, 1.
The bus bar body 50 is held at the regular assembly position by being locked so as to be sandwiched from the outside.

The bus bar body 50 has not only a function of short-circuiting the terminal fittings 20 but also a function of detecting an inserted state of the terminal fitting 20. That is, the tubular portion 53 is assembled while sliding along the outer surface 10A of the housing 10, and the tip end surface of the tubular portion 53 is on the inner peripheral side (the housing 1).
It is an abutting slope 53A that is inclined in such a direction that the outer peripheral side of the (0 side) projects forward. An inside corner edge of the abutting slope 53A is a regulation corner edge 53B that can come into contact with the excessive deflection regulation slope 12C of the lance 12, and an outside corner edge comes into contact with the balancing slope 12D. It is set to 53C. When the bus bar body 50 is properly assembled, the tip portion of the tubular portion 53 is in a wrapped state so as to cover the tip portion of the outer surface of the lance 12.

<Cap 60> The cap 60 is made of a synthetic resin material and has a bottomed cylindrical shape having an oval shape in a front view. At the opening edge of the cap 60, the lock protrusion 44 of the seal holder 40
A lock hole 61 is formed so that the cap 60 is locked in the assembled state by the engagement between the lock protrusion 44 and the lock hole 61. Further, at the opening edge of the cap 60, a relief portion 62 that bulges toward the outer peripheral side is formed in order to avoid interference with the index protrusion. Such a cap 60
The area of the inner peripheral surface of the seal member close to the opening edge is the seal member 3
The outer peripheral lip portion 34 is a sealing surface 63 that elastically contacts.

<Assembly of Parts> The procedure for assembling the above parts is as follows. First, the seal member 30 is held in the housing 10 so as to be sandwiched between the seal holder 40 and the seal holder 40. At this time, a protrusion (not shown) formed on the housing 10 is penetrated through the seal member 30 and the tip of the protrusion is locked by the seal holder 40, whereby the seal member 30 is locked in the holding state, and The detachment of the seal holder 40 is restricted. Next, the terminal fitting 20 is inserted into the terminal insertion hole 41, and is inserted into the cavity 11 while penetrating the seal hole 31. After that, the bus bar body 50 is assembled in the temporary locking position of the housing 10, and in that state, it is set in an unillustrated mounting device, and the bus bar body 50 is pushed from the temporary locking position to the regular mounting position. As a result, the terminal fitting 20 is short-circuited in a predetermined pattern. After the bus bar body 50 is assembled, finally, the cap 60 is assembled so as to cover the housing 10 and the bus bar body 50. When the cap 60 is assembled, water is prevented from entering the inside of the cap 60 through the gap between the inner circumference of the cap 60 and the outer circumference of the seal member 30 by the lip portion 34 on the outer circumference of the seal member 30. Further, water leakage from the outer surface of the seal member 30 is prevented by the lip portion 31A of the seal hole 31 being in close contact with the outer circumference of the electric wire 25.

<Operation and Effect of the Present Embodiment> Terminal fitting 2
When assembling the bus bar body 50 into the housing 10 after inserting 0, when all the terminal fittings 20 are inserted to the regular positions, all the lances 12 are in the free state and the outer surface 12A of the lance 12 is the housing 10. It is located so as to be flush with the outer surface 10A. Therefore, when the bus bar body 50 is assembled, the tubular portion 53 is attached to the housing 1
While sliding along the outer surface 10A of 0, the cylindrical portion 53 does not interfere with the lance 12, and the assembly of the bus bar body 50 is performed without any trouble. When the bus bar body 50 is in the normal assembled state, the inner surface of the tubular portion 53 is the outer surface 12A of the lance 12.
Since the lances 12 face each other so as to be pressed from the outside, the elastic displacement of the lance 12 in the direction in which the lance 12 is disengaged from the terminal fitting 20 is restricted (see FIG. 8).

On the other hand, when the terminal fitting 20 in the half-inserted state is present, the retaining projection 12B interferes with the outer surface of the fitting portion 21, so that the lance 12 is elastically displaced to the outside and the housing 10 is held. It is in a state of protruding from the outer surface 10A. When the bus bar body 50 is assembled in this state, the abutting slope 53A at the tip of the tubular portion 53 contacts the outer corner edge of the lance 12 during assembly, and the resistance of the assembly operation suddenly increases. The operator can detect the presence of the semi-inserted terminal fitting by feeling the sudden increase in the operation resistance (FIG. 9).
See).

Normally, the bus bar body 50 in the state shown in FIG.
After the assembling operation is interrupted and the terminal fitting 20 is reinserted, the busbar body 50 is assembled again.
It is conceivable that the worker continues the assembly operation without noticing the sudden increase in the operation resistance. At this time, for example, if the position of the lance 12 is displaced upward from the position shown in FIG. 9, the balancing corner edge 53C of the tubular portion 53 will cause the balancing slope 12D.
, And the lance 12 is displaced upward in FIG. 9 by the pressing force in the assembling direction according to the inclination of the balancing slope 12D. If the lance 12 continues to bend upward and exceeds its elastic limit, the free state shown in FIG. 8 cannot be restored. However, in the present embodiment, when the lance 12 is bent to a predetermined position within a range that does not exceed its elastic limit, the regulating corner edge 53B of the tubular portion 53 contacts the excessive deflection regulating slope 12C (see FIG. 10). ). The excessive deflection limiting slope 12C is inclined in such a direction that the lance 12 is pressed in its elastic return direction by the abutting force from the tubular portion 53 associated with the assembly of the bus bar body 50. The above elastic displacement is restricted.

As described above, in this embodiment, as a means for preventing excessive bending of the lance 12 beyond the elastic limit, the cylindrical portion 53 is used as the excessive bending restriction slope 12 of the lance 12.
Since the housing 10 is made to abut against C, the housing 10 does not need a wall for restricting the excessive bending of the lance 12, and the height of the housing 10 can be reduced accordingly. In addition, the cylindrical portion 53 of the bus bar body 50
When the abutment contacts both the excessive deflection regulation slope 12C and the balancing slope 12D, the lance 12 enters a balanced state and its displacement is regulated, and further assembling operation of the bus bar body 50 is regulated. There is. That is, even if the lance 12 is strongly strengthened by the bus bar body 50, the lance 12 is prevented from being forcibly displaced in the elastic return direction.
Particularly, in this embodiment, since the lance 12 is separated from the terminal fitting 20 when the cylindrical portion 53 comes into contact with the balancing slope 12D, even if the lance 12 is slightly displaced in the elastic return direction, the lance 12 will not move. There is no fear of being excessively pressed against the terminal fitting 20.

The angle α on the acute angle side between the abutting direction of the cylindrical portion 53 and the excessive deflection regulating slope 12C is equal to the balance slope 12
Since it is set to be smaller than the angle β on the D side, the pressing force in the elastic return direction against the lance 12 is larger than the pressing force in the elastic displacement direction when a force in the assembly direction is applied from the bus bar body 50. Thereby, the excessive bending of the lance 12 can be reliably regulated. Further, since the tip end surface of the tubular portion 53 forms the abutting slope 53A that is inclined with respect to the assembly direction of the bus bar body 50, the terminal fitting 20
Even if the lance 12 slightly protrudes from the outer surface 10A of the housing 10 in the state where the lance 12 is properly inserted, the inner corner edge (restriction corner edge 53B) of the tubular portion 53 is fixed to the lance 12 during the assembly process of the bus bar body 50. Never get caught in.

[Other Embodiments] The present invention is not limited to the embodiments described above and illustrated in the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition to the above, various modifications can be made without departing from the scope of the invention. (1) In the above-described embodiment, the angular edge of the opening of the tubular portion of the bus bar body is brought into line contact with the angular deflection regulating slope and the balancing slope, but according to the present invention, the opening of the tubular portion is formed. The end face may be formed in a V shape so that the end face abuts against the excessive deflection regulation slope and the balancing slope.

(2) In the above-mentioned embodiment, the acute angle between the abutting direction of the tubular portion against the lance and the excessive deflection limiting slope is set smaller than that of the balancing slope, but according to the present invention, both slopes are set. The angle may be set to the opposite size in the embodiment, and the angles of both slopes may be set to the same angle. (3) In the above embodiment, the balancing slope is provided in addition to the excessive deflection restricting slope, but according to the present invention, the balancing slope may not be provided and only the excessive flexing restricting slope may be provided.

(4) In the above embodiment, the opening end face of the tubular portion is inclined with respect to the abutting direction with respect to the lance. However, according to the present invention, the opening end face may be orthogonal to the abutting direction, Moreover, you may incline in the opposite direction to embodiment. (5) In the above embodiment, the tubular portion first contacts the outer corner edge of the lance in the half-inserted state. However, according to the present invention, the tubular portion initially contacts the inclined surface of the lance. Good. In this case, the lance may be slightly deflected after being brought into contact with the balancing slope, and may be also brought into contact with the excessive-deflection regulating slope, or may be set to be in contact with both slopes at the same time.

(6) Although the waterproof type joint connector is described in the above embodiment, the present invention can be applied to a non-waterproof type joint connector.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a seal member and a seal holder are assembled in 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 sectional view of the assembled state.

FIG. 5 is a sectional view showing a state where a seal member and a seal holder are assembled in a housing.

FIG. 6 is a sectional view of a bus bar body.

FIG. 7 is a sectional view of the cap.

FIG. 8 is a partially enlarged cross-sectional view showing a state where the terminal fitting is properly inserted.

FIG. 9 is a partially enlarged cross-sectional view showing a state where the terminal fitting is half-inserted.

FIG. 10 is a cross-sectional view showing a state in which the lance is restricted from floating by the butting of the bus bar body.

[Explanation of symbols]

10 ... Housing 10A ... Outer surface of housing 11 ... Cavity 12 ... Lance 12C ... Excessive deflection regulation slope 12D ... Slope for balancing 20 ... Terminal fittings 50 ... Bus bar body 53 ... Cylinder 57 ... Tab piece α: Inclination angle of excessive deflection regulation slope β: inclination angle of balancing slope

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-10-270116 (JP, A) JP-A-8-250185 (JP, A) JP-A-8-1659 (JP, A) JP-A-9- 115644 (JP, A) Actual flat 6-70171 (JP, U) Actual flat 2-61082 (JP, U) Actual 52-120394 (JP, U) Actual 63-131074 (JP, U) US Pat. No. 5655928 (US, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01R 13/652 H01R 13/42 H01R 13/52 H01R 31/08 H01R 13/64

Claims (2)

(57) [Claims] 1. A housing having a plurality of cavities into which terminal fittings are inserted, and the terminal fittings can be prevented from coming off by being locked to the terminal fittings that are normally inserted in the cavities. A lance that is exposed and that is elastically displaceable to the outside and a plurality of tab pieces are housed in a tubular portion, and the tab portion is attached to the housing so that the tubular portion is externally fitted. A bus bar body that short-circuits the terminal fittings by bringing them into contact with a fitting, and in a state in which the terminal fitting is normally inserted, the lance does not interfere with the tubular portion and does not interfere with the housing. When the busbar body is in a position where it can be assembled and the terminal fitting is in the half-inserted state, the lance will not move due to interference with the terminal fitting. Serial elastically displaced outward of the housing, a joint connector assembly of the bus bar body by the cylindrical portion abuts has to be restricted to the distal end of the lance, the inner side of the distal end of the cylindrical portion The corners are considered to be the control corners
In addition, the outer edge is used as a balancing edge.
Ri, the tip of the lance, the lance is elastically displaced by being deflection excessive contactable with the restricting angle edge while regulating the slope in the elastic limit is formed, the excessive deformation preventing slope, the the lance is inclined in a direction that is pressed to the elastic return direction by the abutment force from the cylindrical portion with the assembly of the bus bar body, the tip of the lance, the regulating angle edge the excessive Deflection
Balance edge in a state of being in contact with the slope
A balance slope that allows the contact of the
The slope causes the lance to move due to the abutting force from the tubular portion.
Inclining in the direction of being pressed in the direction of increasing the elastic displacement
The lance that is elastically flexed to the outside of the housing.
On the other hand, in the process of contacting the tubular portion, the balancing corner edge is
By contacting the balancing slope and tilting the balancing slope,
Change the lance outward so that it separates from the terminal fitting.
After being positioned, the regulating corner edge is subjected to the excessive deflection regulation.
A joint connector characterized in that it comes into contact with a slope . 2. The cylindrical portion and the excessive deflection regulating slope are
While in contact with both of the balancing slopes, the bus bar
-Abutting direction of the cylinder part due to assembly of the body and the excessive
The angle on the acute side with the deflection regulation slope is greater than that of the balanced slope.
The joint connector according to claim 1, wherein the joint connector is set small .