JP3451206B2 - Board 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 board connector.

[0002]

2. Description of the Related Art FIGS.
The connector for board | substrate disclosed by No. 269 was shown. The board connector includes a housing 100 and a terminal fitting 101 housed in the housing 100.

A terminal fitting 101 shown in FIG. 17 is provided with a connecting portion 102 into which a mating terminal fitting can be inserted on the tip side (lower left side in FIG. 17). A locking hole 102A is formed in the upper surface of the connecting portion 102. When the terminal fitting 101 is inserted into the cavity 103 of the housing 100, a lance 104 projecting into the cavity 103 is engaged, and the terminal fitting 101 is inserted into the cavity. It is designed to be retained with respect to 103. In addition, a substrate fixing portion 105, which has a strip shape and extends outward of the housing 100, is connected to the rear end of the connecting portion 102. The board fixing portion 105 has a curved shape so as to bulge downward in FIG. 17, and is provided with a bending deformation portion 105A capable of being bent and deformed in the front-rear direction of the terminal fitting 101 and soldering to be soldered to a printed board. And a section 105B.

On the other hand, inside the housing 100, FIG.
As shown in FIG. 8, a cavity 103 capable of accommodating the terminal fitting 101 is formed as a square hole, and an insertion hole 106 for inserting the mating terminal fitting is formed at the back end thereof, and the inlet end is formed. An assembling port 107 for inserting the terminal fitting 101 is formed in the. In addition, a flexible and deformable lance 104 extends from the upper wall surface of the cavity 103 slightly in front of the center.

The procedure for assembling the terminal fitting 101 into the housing 100 will be described below. From the connecting portion 102 side of the terminal fitting 101 to the housing 10
It is inserted in the assembly port 107 of 0. The connecting portion 102 is slanted along the bottom surface to start pushing, and when it approaches the center of the cavity 103, it is leveled and carried further into the back side (see FIG. 18). Then, when the lance 104 is assembled in the locking hole 102A of the connecting portion 102, the terminal fitting 101 is inserted into the regular assembly position. And
The soldering portion 105B is the through hole 110 of the substrate 108.
After being inserted into the board, the board connector and the board 108 are fixed by soldering 109 (see FIG. 19).

[0006]

After that, a mating connector (not shown) is fitted into the board connector from the left side in FIG. With both connectors mated,
The distance between the joining position of both terminal fittings and the substrate 108 is the height of the housing 100 (R in the figure.
It is called "distance R". ). The distance R is substantially equal to the length of the terminal fitting 101.

When the two connectors vibrate differently from each other after they are fitted to each other (for example, when these connectors are mounted on a vehicle, depending on the shaking condition of the vehicle, such a situation may occur). However, the force applied to the contact portions of the two terminal fittings is received by the soldering 109. The force (moment) applied to the soldering portion 109 is proportional to the distance R, but in this board connector, the terminal metal fitting 101 must be almost the entire length, and a large force must be applied to the soldering 109. Further, if vibration is applied to the contact portions of both terminal fittings, the contact state may deteriorate.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a board connector capable of avoiding applying a large force to a portion fixing a terminal fitting and a board. is there. Another object of the present invention is to provide a board connector that can prevent excessive vibration from being applied to the contact portions between the terminal fittings.

[0009]

In order to solve the above-mentioned problems, a board connector according to the invention of claim 1 is provided with a connecting portion which is electrically connectable to a mating terminal metal fitting, and one end side of which is connected to the connecting portion. A connector that accommodates a plurality of terminal fittings, each of which is connected to the other end and has a board fixing portion that can be inserted into and fixed to a through hole provided in a board, the connector including an upper housing and an upper housing. It is composed of a lower housing that is attached to the housing to prevent the terminal fittings from coming off, and between the upper housing and the lower housing, the two housings are orthogonal to the connecting direction of the terminal fittings and Directly aligned with the direction of the terminal
Rattling allowing space to permit play in the interlinkage bidirectional held Rutotomoni, the lower and the upper housing
The rattling of the surface facing the housing is allowed.
Directional pairs should be paired in both directions where rattling is allowed.
And the two housings have rattled relative to each other.
An elastic portion that urges in the return direction is interposed, and the mating terminal fitting and the board are assembled from the opposite directions to the terminal fitting, respectively, and the board fixing portion is the connecting portion. The rattling is acceptable from the side of
It is Yes in the longitudinal direction with respect to connecting portion by being arranged so as to offset in the direction of the side to have a predetermined overlapping margin, further
In addition, the board fixing portion is elastically deformed.
By allowing the position, the relative play of the two housings
Elastic bending portion that receives the rattling of the terminal fitting due to the rattling
Is provided .

The invention of claim 2 is the same as that of claim 1.
In the lower housing, the mating part of the connecting part
The terminal holding part that contacts the opening edge on the side opposite to the side terminal
And the connection is made on the edge of this terminal holder.
Position and rattle the terminal fitting by pressing the side surface
That the terminal pressing protrusions that suppress
Characterize.

According to a third aspect of the present invention, in the first or second aspect, the elastic portion is a side wall of the upper housing.
It has a resin spring part that extends obliquely and flexibly from the
In addition, on both sides of this resin spring part
While the lower part is projected, the lower housing is
When the housing is assembled, the resin spring part and the front
A spring receiving recess for accommodating the excessive bending restriction protrusion is formed.
The inner wall surface of the spring receiving recess is
The abutment part, and the protrusion abutment parts on both sides of the spring abutment part.
When both housings are assembled, the front
Although the resin spring portion contacts the spring contact portion,
The limit regulation protrusion allows the rattling with respect to the protrusion contact portion.
Spaced apart, but abutted against the abutment part
As a result, it is possible to control the excessive bending of the resin spring part.
It is characterized by the ability to play.

[0012]

[0013]

According to the invention of claim 1, since the rattling allowance space is provided, the upper housing and the lower housing rattle in the direction orthogonal to the connecting direction of the terminal fittings. You can Therefore, it is possible to reduce the force applied to the board fixing portion of the terminal fitting and the fixing portion of the board. In addition, since the board fixing portion is arranged so as to be laterally offset from the side surface of the connecting portion, the total length of the terminal fitting can be shortened. Therefore, the distance between the position where the terminal fittings come into contact with each other and the board can be shortened as compared with the conventional case, and the force that can be generated due to the positional deviation of both terminal fittings is applied to the fixing portion between the board fixing portion and the board. The power can be reduced. Furthermore, both housings have rattled relative to each other.
Sometimes, the elastic bending portion of the substrate fixing portion is elastically displaced.
By doing so, the rattling of the terminal fittings can be received,
In addition to the rattling allowance space,
The force applied to the fixed part between the fixed part and the fixed part of the board is small.
You can do it. Furthermore, the upper housing and the lower
Between the side housing and the
When relative rattling occurs in the intersecting direction, elasticity
The part absorbs this rattling motion. For this reason, both terminal gold
The rattling force may act directly on the contact area of the tool.
Is avoided and good contact between both terminal fittings can be maintained.
It

According to the invention of claim 2, the terminal pressing protrusion
Holds the side surface of the connecting part to position the terminal
Held in a state.

According to the invention of claim 3, the upper and lower housings are
There is a gap between them, and the resin spring part exceeds the specified bending width.
Even if you try to bend excessively, the excessive bending restriction protrusions
By contacting with, it is possible to regulate excessive bending.

[0016]

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described in detail with reference to FIGS. FIG. 1 shows a state before the board connector 1 is assembled. The board connector 1 includes a terminal fitting 2, a housing 3 (corresponding to the upper housing of the present invention) that can accommodate the terminal fitting 2, and a retainer 4 that can be assembled to the housing 3.
(Corresponding to the lower housing of the present invention).

The terminal fitting 2 is, as shown in FIGS.
It is formed by bending a conductive plate material, and is provided with a substantially rectangular tube-shaped connecting portion 5 and a substrate fixing portion 10 extending from substantially the center of the connecting portion 5. The connecting portion 5 is shown in FIG.
In the left and right ends of the connection ports 5A and 5B, the mating terminal fittings 7 can be inserted from either side of the connection ports. 5A, and the right one is called the lower connection port 5B.). Further, in FIG. 4, an elastic contact piece 8 that can be flexibly deformed is provided in the lower center of the inside of the connecting portion 5, so that the mating terminal metal fitting 7 can be sandwiched between it and the upper wall surface with an appropriate pressure. It has become.

A substrate fixing portion 10 extends from the center of the side surface 9 (upper surface in FIG. 2) of the connecting portion 5.
The board fixing portion 10 is deviated obliquely upward in FIG. 2, is bent into a substantially S-shape, and then extends parallel to the axis of the connecting portion 5. In this way, the connecting portion 5 and the substrate fixing portion 10 have a predetermined overlap margin (F in FIG. 2) in the length direction of the connecting portion 5.
Indicate. ). The entire length of the terminal fitting 2 is configured to be shorter than that of the conventional terminal fitting 101 by the overlap margin F. In addition, the substrate fixing portion 10
In the above, the portion bent into the above-mentioned substantially S-shape is an elastic bending portion 11 which can be bent and deformed with appropriate elasticity. The elastic bending portion 11 is an axis line of the connecting portion 5 (a virtual line connecting the connection ports 5A and 5B. G in FIG. 4).
Indicate. ) Can be elastically deformed in the direction of approaching or separating (in the direction of arrow in FIG. 2). Due to this elastic deformation, even after the terminal fitting 2 is fixed to the substrate 12,
It is designed to prevent excessive stress from being generated in other parts of the terminal fitting 2. Further, in the board fixing portion 10, the tip end of the elastic bending portion 11 is an insertion end 10A that is inserted into the through hole 13 of the board 12. Both right and left edges of the insertion end 10A are bent upward at a substantially right angle in FIG. 2 and are formed in a channel shape in cross section as a whole, so that the rigidity of the insertion end 10A is enhanced.

As shown in FIGS. 5 to 8, the housing 3 is integrally molded of synthetic resin, and the terminal fitting 2 can be housed inside. Housing 3
Is elongated as a whole, and a plurality of terminal fittings 2 can be accommodated in a horizontal row. Housing 3
A cavity 14 capable of accommodating the terminal fitting 2 is recessed inside (accurately, the cavities 14 are three large ones at the left and right ends of the housing 3 in FIG. There are two types, one of which is a small one, and the other of which is, of course, the terminal fitting 2 which is mounted in a large cavity and the one which is mounted in a small cavity. Since there is no substantial difference between the two types of cavities and the two types of terminal fittings, only one type will be described.).

Since this cavity 14 is constructed in accordance with the length of the terminal fitting 2, it can be formed shallower than the conventional one by the length of the overlap margin F, so that the height of the housing 3 (see FIG. 7). (Upper and lower length) can be reduced. Inside the cavity 14, the connecting portion 5 of the terminal fitting 2
Is divided into a main chamber 14A for accommodating the sub chamber and a sub chamber 14B provided laterally from the center of the main chamber 14A in the height direction. In the sub chamber 14B, the elastic bending portion 1 of the substrate fixing portion 10 is provided.
1 is accommodated in a state in which a sufficient space for flexural deformation is secured. Further, a connection hole 16 that opens to the upper surface 15 of the housing 3 is provided at the rear end portion (upper end portion in FIG. 7) of the cavity 14. In this connecting hole 16,
The mating terminal fitting 7 can be inserted. Connection hole 16
A guide surface 16A is formed at the opening edge of the so that the mating terminal fitting 7 can be inserted smoothly. The lower end side of the cavity 14 is largely opened as an insertion port 24 for mounting the terminal fitting 2.

Now, on the front wall of the housing 3 in FIG. 6 (hereinafter referred to as side wall 3A), three engaging pieces 18 are provided at predetermined intervals so as to project. The engagement piece 18 is
The housing 3 extends outward from the side wall 3A, and the side wall 3A
Is hung downward with a predetermined distance from. The engagement piece 18 can be expanded and deformed in the width direction of the housing 3 (left-right direction in FIG. 7), and an engagement hole 18A is provided in the center thereof. This engagement hole 18A
The engaging projection 19 on the retainer 4 side can be fitted into the housing 3, and the housing 3 and the retainer 4 are engaged by this engagement.
And are held in a locked state. The engagement pieces 18 are symmetrically provided in both width directions (left and right directions in FIG. 7) with the housing 3 interposed therebetween, and a total of six engagement pieces 18 are provided.

Further, the side wall 3A has adjacent engaging pieces 18
A resin spring portion 20 (corresponding to the elastic portion of the present invention) is provided in the middle of. The resin spring portion 20 extends obliquely upward from the lower end edge of the side wall 3A of the housing 3, and can be flexibly deformed in the width direction of the housing 3 with the lower end portion in FIG. 7 as a fulcrum. In addition, on the left and right of each resin spring portion 20, a pair of excessive deflection regulating projections 2 is provided.
1 is the housing 3 up to almost the same position as the resin spring portion 20.
It is projected outside. The resin spring portion 20 and the excessive deflection regulating projections 21 on both sides of the resin spring portion 20 (hereinafter, may be abbreviated as “resin spring portion 20 or the like”).
By assembling the housing 3 and the retainer 4, they are housed in the spring receiving recess 25 of the retainer 4 described later.

Further, a resin spring portion 22 (corresponding to the elastic portion of the present invention) is also provided at the lower ends of the left and right side walls 3B of the housing 3 in FIG. This resin spring portion 22
Extends obliquely upward from the lower edge of the side wall 3B,
Using the lower end as a fulcrum, the length direction of the housing 3 (see FIG.
It can be bent and deformed in the left-right direction). Further, on both sides of the resin spring portion 22, there are provided excessive bending restriction protrusions 23 protruding to almost the same position as the resin spring portion 22. The resin spring portion 22 and the pair of excessive bending restriction projections 23 are housed in the spring receiving recess 26 of the retainer 4 when the housing 3 and the retainer 4 are assembled.

Next, the retainer 4 will be described with reference to FIGS. The retainer 4 is formed of synthetic resin so as to be able to accommodate the lower end portion of the housing 3.
That is, in FIG. 9, the inside of the upper, lower, left and right side walls of the retainer 4 is a concave assembly recess 29, and the housing 3 is mounted in this assembly recess 29. On both side walls 27 of the upper and lower retainers 4 in FIG. 9, engagement protrusions 19 that can engage with the engagement holes 18A of the engagement pieces 18 of the housing 3 are provided in a protruding manner. A guide surface 19A is formed on the upper surface of the engagement protrusion 19 and
When is fitted into the engaging hole 18A, the lower edge portion of the engaging piece 18 is expanded to allow the engaging operation to proceed smoothly. Further, on the side wall 27 of the retainer 4, a spring receiving recess 25 is provided at a position corresponding to the resin spring portion 20 and the like in the housing 3. Spring receiving recess 25
Is expanded further outward from the mounting recess 29, and the resin spring portion 20 and the like can be accommodated therein. The spring receiving recess 25 has a central spring contact portion 25.
It is divided into A and a pair of protrusion contact portions 25B located on both sides thereof. Of these, the protrusion contact portion 25B is deeper than the spring contact portion 25A.

When the housing 3 and the retainer 4 are assembled, the resin spring portion 20 and the like are mounted in the spring receiving recess 25. At this time, when the housing 3 and the retainer 4 are in the normal position where no external force is applied, the outer edge of the resin spring portion 20 is slightly in contact with the spring contact portion 25A. On the other hand, at this time, the excessive bending restriction protrusion 21 has a predetermined rattling allowance space 28 (see FIG. 16) with respect to the protrusion contact portion 25B.
Only shown in. ) Is secured, and they are separated. When the housing 3 and the retainer 4 rattle in the bending direction of the resin spring portion 20, the resin spring portion 20 causes the spring contact portion 2 to move.
5A is contacted with and flexibly deformed, and is urged in a direction to return rattling. Further, when the resin spring portion 20 is subjected to a force that exceeds the predetermined bending width and excessively bends, the excessive bending restriction protrusion 21 abuts the protrusion abutting portion 25B. , It is designed to regulate excessive bending.

Further, at the left and right ends of the mounting recess 29 shown in FIG. 9, the resin spring portion 22 of the housing 3 and a pair of excessive deflection regulating projections 23 on both sides of the resin spring portion 22 are provided.
A spring receiving recess 26 is provided at a position corresponding to (hereinafter, may be abbreviated as “resin spring portion 22 or the like”). The spring receiving concave portion 26 is also divided into a central spring contact portion 26A and a pair of protruding portion contact portions 26B on both sides of the central spring contact portion 26A. Is also deep in the left-right direction. Resin spring part 2
2 and the like can be mounted in the spring receiving recess 26, and when the housing 3 and the retainer 4 are assembled in the regular positions, the outer edge of the resin spring portion 22 is slightly in contact with the spring contact portion 26A. Become. Further, at this time, the excessive bending restriction protrusion 23 and the protrusion contact portion 26B are separated from each other while ensuring a predetermined rattling allowance space 30 (shown only in FIG. 15). When the housing 3 and the retainer 4 rattle in the bending direction of the resin spring portion 22, the resin spring portion 2
2 comes into contact with the spring contact portion 26A to be flexibly deformed, and urges in a direction of returning rattling. Further, when a force to the extent that the resin spring portion 22 exceeds a predetermined bending width and is excessively bent is exerted, the excessive bending restriction protrusion 23 abuts the protrusion abutting portion 26B. , It is designed to regulate excessive bending.

Now, on the upper surface side (the surface side shown in FIG. 9) of the retainer 4, a structure for retaining the terminal fitting 2 is formed at a position corresponding to the cavity 14 of the housing 3. That is, where the opening edge of the lower connection port 5B of the connecting portion 5 abuts, the terminal holding portion 31 is formed by being slightly raised. A connection hole 32 into which the mating terminal fitting 7 can be inserted is opened at approximately the center of the terminal holding portion 31. In addition, among the terminal holding portions 31, FIG.
In the right side edge, a terminal pressing protrusion 33 is provided in a protruding manner. The terminal pressing protrusion 33 presses the side surface 9 of the connecting portion 5 of the terminal fitting 2 to position the terminal fitting 2 and suppress rattling. Further, in FIG. 11, on the right side of the terminal holding portion 31, a through hole 34 that vertically penetrates the retainer 4 is opened at a position deviated from the axis G of the connecting portion 5 of the terminal fitting 2. The through hole 34 has a long hole shape extending in the length direction of the retainer 4 (vertical direction in FIG. 9), and a state in which a predetermined number of the board fixing portions 10 of the terminal fittings 2 are inserted through the single through hole 34. Can be assembled with. The insertion end 10A is positioned by inserting the board fixing portion 10 through the through hole 34, and the insertion end 10A contacts the opening edge of the through hole 13 when the board connector 1 is assembled to the board 12. Instead, the insertion operation is performed smoothly. Further, since the through hole 34 has a long hole shape, the substrate fixing portion 10 is allowed to move along the through hole 34.

Further, the retainer 4 is provided at both left and right end portions in FIG. 10 so as to project slightly below the central portion to form a mounting projection 35. A mounting hole 35A is provided in the center of the lower surface of the mounting projection 35. The board connector 1 is fixed to the board 12 by fitting a fitting pin (not shown) protruding from the board 12 into the fitting hole 35A.

Next, the operation and effect of this embodiment configured as described above will be described. First, the procedure for assembling the board connector 1 will be described as follows. As shown in FIG.
And the insertion end 10A of the board fixing portion 10 of the terminal fitting 2 is directed upward in each cavity 14 and is dropped by its own weight.

Next, the retainer 4 is assembled from above the housing 3. The retainer 4 is pressed against the housing 3 while passing the board fixing portion 10 of the predetermined terminal fitting 2 through the through hole 34 of the retainer 4. Then, the guide surface 19A of the engaging projection 19 of the retainer 4 advances the assembly while bending the engaging piece 18 of the housing 3 in the expanding direction. Engagement protrusion 1
When 9 gets over the engagement piece 18 and fits into the engagement hole 18A, the engagement piece 18 is deformed by returning, and the housing 3 and the retainer 4 are held in the retaining state. At this time, the terminal fitting 2
Is retained by retaining the upper connection port 5A in contact with the rear end surface of the cavity 14 and the lower connection port 5B in contact with the terminal holding portion 31 of the retainer 4 (see FIG. 16). At this time, the resin spring portion 20 and the like are accommodated in the spring receiving recess 25, and the resin spring portion 22 and the like are accommodated in the spring receiving recess 26.

FIGS. 13 and 14 show a state in which the engagement between the housing 3 and the retainer 4 is released after the assembly of the board connector 1 is completed in this way. At this time, the board fixing portion 10 is in a state of vertically penetrating the predetermined through hole 34. However, the board fixing portion 10 is slidable along the direction in which the through hole 34 extends even after the board connector 1 is assembled.

Next, the board connector 1 is assembled to the board 12. It should be noted that the board connector 1 is assembled in the direction in which thermal expansion is expected to occur in the board 12 and the retainer 4
The through-hole 34 extends in the same direction (in the present embodiment, the same as the length direction of the board connector 1). After inserting the insertion end 10A of the predetermined board fixing portion 10 into the through hole 13 opened at a predetermined place of the board 12, the soldering 36 (main surface) of the back surface of the board 12 (lower surface in FIG. 15) is used. Corresponding to the fixing portion of the invention)), the terminal fitting 2 and the substrate 1
2 and 2 are fixed (see FIGS . 15 and 16 ).

In this way, after the board connector 1 and the board 12 are fixed, the mating terminal fitting 7 is connected to the terminal fitting 2 of the board connector 1. FIG. 16 shows a state in which the mating terminal fitting 7 is inserted from above the board connector 1 and connected to the upper connection port 5A.

In this state, the housing 3 and the retainer 4
Predetermined rattling allowance spaces 28 and 30 are secured between and, and a predetermined rattling allowance is allowed. Also,
When the terminal fitting 2 is displaced in the direction of the arrow in FIG. 16,
The elastic bending portion 11 of the substrate fixing portion 10 is adapted to elastically absorb the displacement.

When both the terminal fittings 2 and 7 are connected in this way, as shown by the arrows in FIG. 16, the two terminal fittings 2 and 7 may be connected depending on the installation location (for example, the inside of a car). It is possible to vibrate in different directions. At this time, according to the present embodiment, since the rattling allowance space 28 is provided between the housing 3 and the retainer 4, the housing 3 and the retainer 4 are arranged in the connecting direction of the two terminal fittings 2, 7. It is possible to rattle in the direction orthogonal to that. Therefore, the force applied to the soldering 36 between the board fixing portion 10 of the terminal fitting 2 and the board 12 can be reduced.

Further, when a relative rattling occurs between the housing 3 and the retainer 4 in a direction orthogonal to the connecting direction of the terminal fittings 2 and 7, the resin spring portion 2
0 and 22 absorb this rattling motion. For this reason, it is possible to prevent the force caused by the rattling from directly acting on the contact portions of the two terminal fittings 2 and 7, and it is possible to maintain the good contact state of the two terminal fittings 2 and 7.

Furthermore, since the board fixing portion 10 is arranged laterally offset from the side surface 9 of the connecting portion 5, the total length of the terminal fitting 2 can be shortened. Therefore, the distance between the position where the two terminal fittings 2 and 7 contact each other and the board 12 can be shortened as compared with the related art, and the force that can be generated due to the positional deviation of the two terminal fittings 2 and 7 causes the board fixing portion 10 And board 1
The force applied to the soldering 36 with 2 can be reduced.

Further, when the housing 3 and the retainer 4 relatively rattle, the elastic bending portion 11 of the substrate fixing portion 10 elastically displaces, so that the terminal fitting 2 receives the rattling. Therefore, the force applied to the soldering 36 between the board fixing portion 10 and the board 12 can be reduced.

In addition, when a force is applied to the resin spring portions 20 and 22 to bend them over a predetermined bending width, the excessive bending restriction projections 21 and 23 and the projection contact portions 25B and 26B are formed. Due to the excessive bending restriction portion, the resin spring portions 20, 2 are
Bending of No. 2 is regulated. In this way, the deformation and damage of the resin spring portions 20 and 22 can be avoided.

Further, since the resin spring portions 20 and 22 are formed integrally with the housing 3, the number of parts is smaller than that when an elastic portion (for example, a metal spring, sponge, etc.) which is separate from the housing 3 is used. Is less.

Further, since the terminal fitting 2 mounted on the housing 3 is of the female side, when the terminal fitting 2 is mounted with the housing 3 facing downward, the terminal fitting 2 projects from the upper surface of the housing 3. There is nothing to do. For this reason, when assembling the housing 3 and the retainer 4, the retainer 4 can be pressed while pressing the upper surface of the housing 3 against a flat surface of a desk or the like, so that the assembling operability is improved.

Further, since the through hole 34 is formed in the shape of a long hole in the direction matching the thermal expansion direction of the substrate 12, the substrate fixing portion 10 extends the through hole 34 when the substrate 12 thermally expands. Displacement along the direction is allowed, which can prevent an unreasonable force from acting on the fixed portion between the substrate 12 and the substrate fixing portion 10.

The present invention is not limited to the above-mentioned embodiment, and the following ones are also included in the technical scope of the present invention. (1) In the present embodiment, the female terminal fitting is attached to the board connector, but according to the present invention, the male terminal fitting may be used. (2) In the present embodiment, the upper housing is provided with a cavity capable of accommodating the terminal fitting, and the lower housing retainer covers the cavity. However, according to the present invention, a cavity capable of accommodating the terminal fitting is provided in the lower housing,
The upper housing may cover this. Further, according to the present invention, a part of the cavity may be formed in each of the upper housing and the lower housing, and the complete cavity may be formed by the engagement of both housings. (3) In this embodiment, the resin spring, which is the elastic portion, is formed integrally with the housing. However, according to the present invention, a metal spring, a sponge, or the like, which is separate from the housing, may be used as the elastic portion. By doing so, it is possible to select a material that can exert an appropriate elastic force.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a board connector according to an embodiment.

[Figure 2] Side view of the terminal fitting

[Figure 3] Plan view of the terminal fitting

4 is a sectional view taken along line AA in FIG.

FIG. 5 is a plan view of the housing body.

FIG. 6 is a front view of the housing body.

7 is a sectional view taken along line BB in FIG.

FIG. 8 is a sectional view taken along line CC in FIG.

FIG. 9 is a plan view of the retainer.

FIG. 10 is a front view of the retainer.

FIG. 11 is a sectional view taken along line DD in FIG.

12 is a sectional view taken along line EE in FIG.

FIG. 13 is a perspective view when the housing body and the retainer are separated from each other after the board connector is assembled.

FIG. 14 is a partially cutaway perspective view showing how the terminal fitting and the retainer are assembled in FIG. 13;

FIG. 15 is a front view when the board connector is assembled to the board.

FIG. 16 is a side sectional view when a mating terminal metal fitting is assembled to the board connector assembled to the board.

FIG. 17 is a perspective view of a terminal fitting housed in a board connector according to a conventional example.

FIG. 18 is a side sectional view of the conventional housing in which the terminal fittings are being housed.

FIG. 19 is a side sectional view of a conventional board connector.

[Explanation of symbols]

1 ... Board connector 2 ... Terminal fittings 3 ... Housing (upper housing) 4 ... Retainer (lower housing) 5 ... Connection part 7: Mating terminal fitting 10 ... Board fixing part 12 ... Substrate 13 ... Through hole 20, 22 ... Elastic part 28,30 ... rattling allowance space F ... Overlap margin

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Koichi Shiramizu 1 Toyota-cho, Toyota-shi, Aichi Toyota Motor Co., Ltd. (56) Reference JP-A-11-265755 (JP, A) JP-A-2-106882 (JP, A) JP-A-9-223552 (JP, A) Actually developed 63-25474 (JP, U) Actually developed 2-56373 (JP, U) (58) Fields investigated (Int.Cl. ⁷⁾ , DB name) H01R 12/04 H01R 12/22 H01R 13/639 H01R 24/00

Claims (3)

(57) [Claims] 1. A connecting portion which can be electrically connected to a mating terminal fitting, and a board fixing portion which is connected to the connecting portion at one end side and can be fixed by inserting the other end side into a through hole provided in a board. A connector for accommodating a plurality of terminal fittings provided therein, the connector comprising an upper housing and a lower housing for preventing the terminal fittings from coming off by being assembled to the upper housing. and between the lower housing, or the two housings are perpendicular to the direction of connection between the terminal fittings
One said the arrangement direction of the terminal fitting backlash allowing space to permit play in the bidirectional orthogonal is held Rutotomo
The upper housing and the lower housing facing each other.
Among the surfaces, in the direction where the rattling is allowed,
It is arranged in pairs in both directions where tatling is allowed.
Bias in the return direction when the housing rattles relatively
Is resilient portion which is interposed, and said the mating terminal fitting and the substrate, with assembled from opposite directions with respect to the terminal fitting, the substrate fixing portion, the backlash from the side of the connecting portion
For Yes and to have a predetermined overlapping margin in the length direction with respect to connecting portion by is disposed with offset to the side of the direction permitted, further, to the substrate fixing portion, the board fixing Department
By allowing the elastic displacement of
Receives the rattling of the terminal fitting due to the relative rattling.
A board connector characterized in that an elastic flexure portion is provided . 2. The lower housing is provided with the connecting portion.
A terminal that contacts the opening edge on the opposite side of the mating terminal fitting
A holding part is formed, and at the edge of this terminal holding part
Position the terminal fitting by pressing the side surface of the connecting part
The terminal pressing protrusion that suppresses rattling and
Board connector according to claim 1, wherein the are. 3. The elastic portion is on the side of the upper housing.
Has a resin spring part that extends obliquely and flexibly from the wall
In addition, both sides of this resin spring part are restricted from excessive bending.
While the protrusion is provided on the lower housing,
When the housing is assembled, the resin spring portion and
A spring receiving recess for accommodating the excessive deflection limiting protrusion is formed.
The inner wall surface of the spring receiving recess is
The abutment part, and the protrusion abutment parts on both sides of the spring abutment part.
When both housings are assembled, the front
Although the resin spring portion contacts the spring contact portion,
The limit regulation protrusion allows the rattling with respect to the protrusion contact portion.
Spaced apart, but abutted against the abutment part
As a result, it is possible to control the excessive bending of the resin spring part.
Board connector according to claim 1 or 2, characterized in that as the capacity.