JPH10144412A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a connector housing from being deformed by elastic restoration force of terminal metal fittings developed when it is fitted to a multi-fuse. SOLUTION: In a fuse cover 30, a frame-shaped deflection correcting member 32 of high rigidity is integrally provided. When the fuse cover 30 is mounted in a connector housing 11, the deflection correcting member 32 is fitted so as to be in close-contact from the outside relating to an external wall 13, in this way, its deflection to the outside is corrected. When deflection of the external wall 13 is corrected, between the terminal metal fittings 20 and a multi-fuse 40, a regular contact pressure is ensured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for mounting a mating member such as a multi-fuse in which a plurality of contacts are arranged in parallel. The present invention relates to a connector for preventing such a connector.

[0002]

2. Description of the Related Art As a connector of this type, there is a connector for a multi-fuse as shown in FIGS. The multi-fuse 3 is provided in the connector housing 2 made of synthetic resin.
The fuse cavity 2A for accommodating the fuse is formed so as to open in a slit shape on the upper surface in the figure, and a plurality of terminal fittings 4 are arranged in parallel along both inner wall surfaces of the fuse cavity 2A. A plurality of terminal cavities 2B for accommodating individually are formed as described above. Each of the terminal cavities 2B is opened in the form of a vertically long slit on the inner wall surface of the fuse cavity 2A, and a locking projection is provided on the inner wall surface of the terminal cavity 2B opposite to the opening to the fuse cavity 2A. A portion 2C is formed. Furthermore, connector housing 2
A pair of mounting portions 2D having screw holes 2E are formed at both ends in the length direction.

The terminal fitting 4 includes a terminal body 4A extending in the vertical direction, a pin-shaped board mounting portion 4B connected to a lower end of the terminal body 4A, and a mountain-shaped elastic contact piece folded from the upper end of the terminal body 4A. 4C and a lance 4D formed by cutting and raising a part of the terminal main body 4A. The terminal fitting 4 is inserted into the terminal cavity 2 </ b> B from the opening on the lower surface side of the connector housing 2. The terminal fitting 4 that has been properly inserted, the locking projection 2C and the lance 4D lock the elastic contact piece 4C to the fuse cavity 2A.
It is held in a state of protruding inward.

In the multi-fuse connector 1 assembled as described above, a connector housing 2 is fixed to the circuit board P by screwing a tapping screw (not shown) penetrating the circuit board P into a screw hole 2E. In both cases, each board mounting portion 4B is inserted into the through hole H of the circuit board P and soldered (not shown) to be mounted on the circuit board P. A multi-fuse 3 having a thick plate shape is inserted into the fuse cavity 2A of the multi-fuse connector 1. A plurality of fuses (not shown) are built in the fuse housing 3A of the multi-fuse 3, and the contacts 3B of each fuse are arranged in parallel on both side surfaces of the fuse housing 3A.
When the multi-fuse 3 is inserted, the contact 3B of each fuse comes into contact with the corresponding two elastic contact pieces 4C while causing elastic bending, and two terminal fittings 4 are connected to each fuse. Further, since the fuse housing 3A of the inserted multi-fuse 3 projects above the connector housing 2, a fuse cover 5 for covering the fuse housing 3A is attached to the upper surface of the connector housing 2.

[0005]

In the state where the multi-fuse 3 is attached and brought into contact with the terminal fitting 4, the terminal body 4A of the terminal fitting 4 is moved outward (in a direction away from the multi-fuse 3) by the elastic restoring force of the elastic contact piece 4C. ), And the pressing force is applied to the connector housing 2 via the locking projection 2C.
On the outer wall 2F. Therefore, the outer wall 2F is deformed so as to expand outward in a high-temperature environment, and the terminal fitting 4 may be displaced outward accordingly. In this case, a predetermined contact pressure cannot be obtained between the multi-fuse 3 and the terminal fitting 4 even if the deformation amount is small.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to prevent the connector housing from bending due to elastic restoring force between the mating member and the terminal fitting when the mating member is fitted. And

[0007]

According to the first aspect of the present invention, there is provided a connector housing having a cavity in which a mating member can be fitted. A plurality of terminal fittings capable of elastic contact with the mating member, an outer wall corresponding to the terminal fittings of the connector housing along a parallel direction thereof, and the terminal fitting being attachable to the connector housing; In a connector provided with a cover for protecting the member, the cover is characterized in that a bending correction member capable of correcting bending to the outside of the outer wall is integrally provided.

According to a second aspect of the present invention, in the first aspect of the present invention, the deflection correcting member is provided along a peripheral edge of the cover, and the deflection limiting member is attached to the connector housing by attaching the cover to the connector housing. The feature is that it is fitted to the outside. Incidentally, claim 2
In the invention, the deflection regulating member may have a frame shape surrounding the connector housing over the entire circumference. According to a third aspect of the present invention, in the first or second aspect of the present invention, the terminal cavity is held in the terminal cavity by engaging a lance provided in the terminal cavity with the terminal cavity. It is characterized in that a stop projection is formed and an insertion member is inserted into a gap between the terminal fitting and the outer wall of the connector housing generated by the locking projection.

A fourth aspect of the present invention is characterized in that, in the third aspect of the present invention, the insertion member is inserted into a die hole for forming the locking projection. The invention of claim 5 is characterized in that, in the invention of claim 3 or claim 4, the interposing member is provided integrally with the cover.

[0010]

According to the first aspect of the present invention, when the mating member is fitted into the cavity, the terminal fitting makes elastic contact, and the elastic restoring force presses the terminal fitting against the outer wall of the connector housing. At this time, even if the outer wall bends outward, when the cover is attached to the connector housing, the deflection correcting member displaces the outer wall inward and restores the state before bending. Then, since the terminal fitting is also pushed back to the mating member side, a predetermined contact pressure is secured. Further, since the deflection correcting member is provided integrally with the cover, the mounting operation to the connector housing can be completed in one process as compared with a case where these members are separately mounted on the connector housing as separate members.

According to the second aspect of the present invention, since the attachment of the cover to the connector housing and the deflection of the outer wall by the deflection correcting member are controlled by a single action operation, the operability is excellent. In the second aspect, when the deflection restricting member has a frame shape surrounding the entire circumference of the connector housing, the strength of the deflection correcting member is high, and the effect of correcting the deflection of the outer wall is improved. According to the third aspect of the present invention, since the interposition member is inserted between the terminal fitting and the outer wall of the connector housing, the pressing force of the terminal fitting acts locally on the outer wall at the locking projection. Instead, it acts on the insertion member. Thereby, the stress on the outer wall is relaxed.

According to the fourth aspect of the present invention, it is not necessary to open a dedicated opening for inserting the insertion member, so that a reduction in the strength of the connector housing can be avoided. Also,
Since the mold removal hole will be closed by the insertion member,
Foreign matter is prevented from entering the terminal cavity. According to the fifth aspect of the present invention, since the insertion member is provided integrally with the fuse cover, the attachment of the fuse cover to the connector housing and the insertion of the insertion member are performed by a one-action operation, resulting in excellent operability. ing.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 Embodiment 1 of the present invention will be described below with reference to FIGS. The multi-fuse connector (a connector which is a constituent element of the present invention) 10 of the present embodiment is for mounting a multi-fuse (a mating member which is a constituent element of the present invention) 40 and has a connector housing 11. And a terminal fitting 20 and a fuse cover (a cover which is a component of the present invention) 30.

First, the multi-fuse 40 will be described. The multi-fuse 40 includes a plurality of fuses (10 in this embodiment) in a fuse housing 41 having a thick plate shape as a whole.
) Fuses (not shown) are built in and arranged in the length direction. The two contacts 43 of each of the fuses are connected to the insertion portion 42 having a reduced thickness at the lower portion of the fuse housing 41.
Are exposed in a vertically elongated shape on both side surfaces, and ten contact points 43 are arranged on each side surface so as to be arranged in parallel in the length direction. The multi-fuse 40 is fitted so as to be inserted into a multi-fuse cavity (a cavity which is a constituent feature of the present invention) 12 described later, and two contacts 43 on both sides of each fuse are connected to two terminal fittings 2.
0, so that ten pairs of terminal fittings 20 are connected via fuses for each pair.

The connector housing 11 is made of a synthetic resin material, has a certain height and a large length with respect to the width, and has a rectangular parallelepiped shape as a whole. Inside the connector housing 11, a fuse cavity 12 which is opened like a slit is formed on the upper surface thereof.
The multi-fuse cavity 12 has a certain depth,
The insertion portion 42 of the multi-fuse 40 is fitted here. Outer wall 1 inside connector housing 11
In the area between the multi-fuse cavity 12 and the multi-fuse cavity 12,
Zero pairs of terminal cavities 14 are formed. The terminal cavities 14 are elongated in the vertical direction, and terminal fittings 20 are inserted into the respective terminal cavities 14 through openings in the lower surface of the connector housing 11. A substantially upper half area of each terminal cavity 14 has a vertically elongated communication groove 1.
5 and communicate with the multi-fuse cavity 12. The elastic contact pieces 24 of the terminal fittings 20 enter the communication grooves 15.

On the inner wall surface of the terminal cavity 14 opposite to the communication groove 15 (= the inner surface of the outer wall 13 of the connector housing 11), a locking projection 1 for holding a terminal fitting 20 is provided.
6 are formed. The locking projection 16 is located below the center of the terminal cavity 14 in the vertical direction. The locking projection 16 has an inclined surface 16 </ b> A for preventing the lance 25 from being caught when the terminal fitting 20 is inserted.
And a locking surface 16B that locks the lance 25 to restrict the movement of the terminal fitting 20 in the pulling-out direction. Further, a die-cutting hole 19 for forming the locking projection 16 is opened on the upper surface of the connector housing 11.

A pair of mounting portions 17 having screw holes 17A are formed at both ends in the longitudinal direction of the connector housing 11. The connector housing 11 is fixed to the circuit board P by screwing a tapping screw (not shown) penetrating the circuit board P into the screw hole 17A. Further, the fuse cover 3 is provided at four corner positions on the upper surface of the connector housing 11.
A press-fitting hole 18 for fixing 0 is formed.

The terminal fitting 20 has an elongated base plate 21 provided with side walls 22 on both side edges, a pin-shaped board mounting portion 23 connected to the lower end of the base plate 21 in a plane, and folded from the upper end of the base plate 21. The elastic contact piece 24 has a gentle mountain shape and a lance 25 formed by cutting a part of the base plate 21 to the opposite side to the elastic contact piece 24.
The terminal fitting 20 is inserted into the terminal cavity 14 from an opening on the lower surface side of the connector housing 11.
The terminal fitting 20 that has been properly inserted is held in a detachment-restricted state by the lance 25 being locked on the locking surface 16 </ b> B of the locking projection 16.

With the terminal fitting 20 properly inserted,
The elastic contact piece 24 protrudes into the multi-fuse cavity 12 through the communication groove 15 and stands by so as to be able to contact the contact 43 of the multi-fuse 40. The board mounting portion 23 projects downward from the connector housing 11 and can be fitted into the through hole H of the circuit board P. The base plate 21 abuts on the locking projection 16 at a substantially central position in the length direction thereof. Locking projection 16 between outer wall 13
There is a gap corresponding to the protrusion dimension of.

The multi-fuse connector 10 having the terminal fitting 20 mounted on the connector housing 11 as described above.
The connector housing 11 is fixed at a predetermined position on the circuit board P, and each board mounting portion 23 is inserted into the through hole H and mounted on the circuit board P by soldering S. In the state of being attached to the circuit board P in this manner, the insertion portion 42 of the multi-fuse 40 is fitted into the multi-fuse cavity 12, and each contact 43 is resiliently attached to the corresponding elastic contact piece 24 of the corresponding terminal fitting 20. Contact while bending. Then, the terminal fitting 20 is pressed outward by the elastic restoring force of the elastic contact piece 24, that is, in a direction approaching the outer wall 13 of the connector housing 11. At this time, since the terminal fitting 20 has a gap between the terminal fitting 20 and the outer wall 13 except for the contact portion with the locking projection 16, the pressing force from the terminal fitting 20 is applied to the outer wall 13 by the locking projection 16.
Will act locally.

When the multi-fuse 40 is mounted as described above, the upper portion of the multi-fuse 40 protrudes from the connector housing 11, and the fuse cover 30 for protecting the protruding portion is connected to the connector housing 11.
It can be attached to. Fuse cover 3
Reference numeral 0 denotes a synthetic resin, and a concave portion 3 for accommodating a protruding portion of the multi-fuse 40 from the connector housing 11.
One. When the fuse cover 30 is attached to the connector housing 11, the bottom surface of the fuse cover 30 is aligned with the upper surface of the connector housing 11 so that both outer surfaces are substantially flush with each other. Further, a projection (not shown) corresponding to the press-fit hole 18 of the connector housing 11 is formed on the bottom surface of the fuse cover 30. Is to be fixed.

The fuse cover 30 includes a deflection correcting member 32 and an insertion pin (an insertion member which is a constituent element of the present invention) as means for preventing the outer wall 13 of the connector housing 11 from bending outward. 33 are provided integrally. The deflection correcting member 32 is made of a highly rigid metal material, has a frame shape, and extends downward along the outer surface of the fuse cover 30. This deflection correcting member 3
The fuse cover 2 and the fuse cover 30 are integrally manufactured by insert molding, and have a form in which an inward bent portion 32 </ b> A provided at the upper end edge of the deflection correcting member 32 is cut into the outer surface of the fuse cover 30. When the fuse cover 30 is attached to the connector housing 11, the deflection correcting member 32 is in close contact with the outer wall 13 of the connector housing 11 from the outside, and the contact area is a range extending over the front surface of the outer wall 13. Further, a tapered guide surface 34 for avoiding interference with the upper surface side edge of the connector housing 11 is formed on the lower inner edge of the deflection correcting member 32. In addition, in the end face part other than the part which adheres to the outer wall 13,
A notch 35 is provided for avoiding interference with the mounting portion of the connector housing 11.

On the other hand, the insertion pin 33 is made of a highly rigid metal material, has a vertically elongated shape, and projects downward from the lower surface of the fuse cover 30. The insertion pin 33 is also manufactured integrally with the fuse cover 30 by insert molding similarly to the deflection correcting member 32, and has a configuration in which the upper end of the insertion pin 33 is inserted into the fuse cover 30. Twenty insertion pins 33 are provided corresponding to the respective terminal cavities 14. When the fuse cover 30 is attached to the connector housing 11, each of the insertion pins 33 is fitted into the die hole 19, and the terminal fittings are provided. 20 is inserted between the base plate 21 and the outer wall 13.

Next, the operation of the present embodiment will be described. When the multi-fuse 40 is inserted into the multi-fuse cavity 12, the terminal fitting 20 locally presses the outer wall 13 via the locking projection 16 by the elastic restoring force of the elastic contact piece 24 as described above. At this time, the outer wall 13 may be curved and deformed outward in such a manner as to expand the portion of the locking projection 16 most. However, by attaching the fuse cover 30 to the connector housing 11, the bending of the outer wall 13 is corrected. That is, while the fuse cover 30 is being put on the multi-fuse 40, the lower end of the deflection correcting member 32 is fitted to the upper end of the outer wall 13 so as to be in close contact with the upper end of the outer wall 13. The bulging outer wall 13 is pushed back inward. Thus, the outer wall 1
3 is corrected, and the outer wall 13 is restored to the unbent state before the multi-fuse 40 is inserted, and the terminal fitting 20 that has been displaced outward is also pushed back to the normal position.

Further, when the connector housing 11 is viewed from above, the outer wall 13 may be curved and deformed in such a manner that the central portion in the length direction is the largest. At this time, when the fuse cover 30 is attached, the guide surface 34 at the lower end of the deflection correcting member 32 is fitted from the outside to the most bulged portion of the outer wall 13, and when the fuse cover 30 is pressed down from that state, the guide surface 34 is pressed. The outer wall 13 is pushed back inward by the taper. Thereby, the bending of the outer wall 13 is corrected to restore the state before the multi-fuse 40 is inserted, and the terminal fitting 20 is pushed back to the normal position.

As described above, in the present embodiment, the outer wall 13 of the connector housing 11 is pushed by the terminal fitting 20.
Is bent outward, the deflection correcting member 32 corrects the deflection and also corrects the outward displacement of the terminal fitting 20. Thereby, an appropriate contact pressure between the elastic contact piece 24 and the multi-fuse 40 is secured. When the bending of the outer wall 13 is corrected by the bending correcting member 32, the elastic restoring force of the elastic contact piece 24 acts as a pressing force from the terminal fitting 20 to the multi-fuse 40 side. Here, assuming that the terminal fittings are arranged along only one side surface of the multi-fuse and the outer wall of the connector housing directly corresponds to the opposite side surface, the pressing force from the terminal fitting side is multiplied. It is also conceivable that the multi-fuse and the outer wall would bend to the opposite side of the terminal fitting because only one side of the fuse would act. However, in the present embodiment, the bending correction member 32 has a frame shape surrounding the entire circumference of the connector housing 11 and the terminal fittings 20 are arranged on both sides of the multi-fuse 40. The pressure is canceled, and there is no possibility that the multi-fuse 40 and the outer wall are bent. Therefore, the reliability of ensuring the contact pressure is high.

Further, with the attachment of the fuse cover 30, the insertion pin 33 is inserted between the terminal fitting 20 and the outer wall 13 from the die-cutting hole 19. At this time, the insertion pin 33 comes into contact with the base plate 21 of the terminal fitting 20, so that the pressing force from the terminal fitting 20 acts on the insertion pin 33. As a result, the concentration of the pressing force on the locking projection 16 is eliminated, and the stress on the outer wall 13 is reduced. Further, when the outer wall 13 is flexed, the terminal fitting 20 is displaced toward the outer wall 13. In this case, the insertion pin 33 pushes the terminal fitting 20 away from the outer wall 13. Thus, the function of correcting the deflection of the outer wall 13 is also exhibited. Further, since the insertion pin 33 is inserted through the die release hole 19 formed for forming the locking projection 16, the insertion pin 33 is inserted into the connector housing 11.
A dedicated opening is not required, and a reduction in the strength of the connector housing 11 can be avoided. In addition, the punching holes 19
Is closed by the insertion member, so that the terminal cavity 1
4 is prevented from entering a foreign substance. Further, since the deflection correcting member 32 and the insertion pin 33 are provided integrally with the fuse cover 30, the bending correcting member 32 is attached by attaching the fuse cover 30 to the connector housing 11.
The insertion pin 33 is also attached to the connector housing 11. Therefore, as compared with the case where the deflection correcting member 32 and the insertion pin 33 are separately attached to the connector housing 11 as a separate member from the fuse cover 30, the attachment work efficiency is improved. <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. Various changes can be made without departing from the scope of the invention.

(1) In the above embodiment, the deflection correcting member and the fuse cover are integrated by insert molding, but according to the present invention, the bending correcting member and the fuse cover are manufactured as separate products, and these are connected to the connector. You may make it attach before attaching to a housing. (2) In the above embodiment, the deflection correcting member is made of metal. However, according to the present invention, not only metal but also other materials such as synthetic resin can be used. (3) In the above embodiment, the material of the fuse cover is made of synthetic resin. However, according to the present invention, the material is not limited to synthetic resin, and other materials such as metal can be used. If the fuse cover is made of metal, the insertion pin (insertion member)
Is made of an insulating material, it is possible to prevent a short circuit between the terminal fittings.

(4) In the above embodiment, one or both of the lower end portion of the insertion pin and the opening edge of the punching hole may be tapered. With this configuration, the operation of inserting the insertion member into the die-cutting hole is reliably performed. (5) In the above embodiment, the insertion pin and the fuse cover are integrated by insert molding, but according to the present invention,
The insertion pin and the fuse cover may be separate components. In this case, the insertion pin and the fuse cover may be assembled before being attached to the connector housing, or the insertion pin may be independently attached to the connector housing.

(6) In the above embodiment, the insertion pin is mounted between the outer wall of the connector housing and the terminal fitting. However, according to the present invention, the insertion pin may not be provided. (7) In the above-described embodiment, a 10-pin connector having 10 pairs of terminal fittings is provided.
Although the pole type connector has been described, the present invention can also be applied to a connector having 9 or less poles or 11 or more poles. (8) In the above embodiment, the case where one connector is fitted with one multi-fuse has been described.
The present invention can be applied to a case where a plurality of multi-fuses are attached to one connector so as to be arranged in series or in parallel.

(9) In the above embodiment, the terminal fittings are arranged so as to sandwich the multi-fuse from both sides. However, the present invention is also applicable to a case where the terminal fittings are arranged along only one side surface of the multi-fuse. Can be. In this case, if the bending correction member is configured to correct the bending of the outer wall opposite to the terminal fitting, the bending of the multi-fuse caused by the pressing force from the terminal fitting acting on only one side of the multi-fuse is prevented. Can be prevented.

(10) In the above embodiment, the case where the mating member is a multi-fuse has been described. However, the present invention relates to a case where the mating member is an edge portion of the circuit board in which a plurality of contacts are arranged in parallel. Can also be applied.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a disassembled state of a first embodiment.

FIG. 2 is a partially cutaway perspective view of a fuse cover including a deflection correcting member and an insertion member.

FIG. 3 is a sectional view showing a state where a connector housing is fixed to a circuit board and a multi-fuse is attached.

FIG. 4 is a cross-sectional view of a fuse cover including a deflection correcting member and an insertion member.

5 is a sectional view showing a state where the fuse cover shown in FIG. 4 is attached to the connector housing shown in FIG. 3;

FIG. 6 is an exploded perspective view of a conventional example.

FIG. 7 is a sectional view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Multi fuse connector (connector) 11 ... Connector housing 12 ... Fuse cavity (cavity) 13 ... Outer wall 14 ... Terminal cavity 16 ... Locking projection 19 ... Die-cut hole 20 ... Terminal fitting 24 ... Elastic contact piece 25 ... Lances 30 ... Fuse cover (cover) 32 ... Deflection correction member 33 ... Insertion pin (interposition member) 40 ... Multi fuse (mating member) 43 ... Contact

Claims (5)

[Claims] 1. A connector housing having a cavity in which a mating member can be fitted, and a connector housing arranged in parallel along the longitudinal direction of the cavity and capable of elastic contact with the mating member. A connector comprising: a plurality of terminal fittings; an outer wall corresponding to the terminal fittings of the connector housing along a parallel direction thereof; and a cover attachable to the connector housing and protecting the mating fitting member. A connector, wherein the cover is integrally provided with a bending correction member capable of correcting bending to the outside of the outer wall. 2. The deflection correcting member is provided along a peripheral edge of the cover, and the cover is attached to the connector housing so that the deflection regulating member is fitted to the outside of the outer wall. Claim 1
The connector described. 3. The terminal cavity has a locking projection formed by locking a lance provided on the terminal fitting to hold the terminal fitting in the terminal cavity.
3. The connector according to claim 1, wherein an interposing member is inserted into a gap between the terminal fitting and an outer wall of the connector housing generated by the locking projection. 4. The connector according to claim 3, wherein said insertion member is inserted into a die-cut hole for forming said locking projection. 5. The connector according to claim 3, wherein the insertion member is provided integrally with the cover.