JP2003059568A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector with which a damage to a hole edge part of a mounting hole section can be prevented when terminal fittings are fitted to a housing. SOLUTION: At the back wall section 3 of the housing l, mounting hole sections 4 to mount the terminal fittings 2 are arranged with their front and rear part opened. The cross section of the mounting hole section 4 is formed nearly the same or slightly smaller than the cross section of the terminal fitting 2. At each peak section of the mounting hole section 4, an approximately U-shaped recess is formed in order to avoid abutting with the edge 5 of the terminal fitting 2.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art A conventional connector is shown in FIGS. The connector is provided with a hood-shaped housing 100 and a terminal fitting 101 provided in the housing 100. A mounting hole portion 102 is opened in a wall portion on the back side of the housing 100, and the terminal fitting 101 is inserted into the mounting hole portion 102, whereby the housing 100 and the terminal fitting 101 are integrated. The cross section of the terminal fitting 101 is substantially rectangular, while the cross section of the mounting hole 102 is substantially rectangular, which is slightly smaller than the cross section of the terminal fitting 101, as shown in FIG.

[0003]

The terminal metal fitting 101 having the above-described structure is attached to the mounting hole portion 102 of the housing 100.
When it is inserted into the
One end of the terminal fitting 101 is press-fitted from the surface side shown in FIG.
By the way, the cross-sectional shapes of both the mounting hole 102 and the terminal fitting 101 have a predetermined size (that is, the peripheral edge of the terminal fitting 101 and the hole edge of the mounting hole 102) in order to regulate the holding force of the terminal fitting 101. The size is such that they are in close contact with each other). For this reason, when the terminal metal fitting 101 is pushed in, a large force is applied to the hole edge of the mounting hole portion 102, and as shown in FIG. 12, a crack X may enter particularly in the corner portion of the mounting hole portion 102. Obtained. In order to avoid such a situation, it is not unthinkable that the mounting hole 102 has an elliptical cross-sectional shape. However, in such a case, the corner portion of the cross section of the terminal fitting 101 is a hole of the mounting hole 102. It is possible that the edge is scraped off. The present invention has been made in view of the above circumstances, and an object thereof is to provide a connector capable of avoiding damage to the hole edge portion of the mounting hole portion when the terminal fitting is assembled to the housing. is there.

[0004]

Means for Solving the Problem, Action of the Invention, and Effect of the Invention In order to solve the above-mentioned problems, a first invention is a housing provided with a mounting hole portion which penetrates a wall portion in a thickness direction,
A connector provided with a terminal fitting integrated with the housing by being inserted into the mounting hole, wherein a recess is provided at a hole edge of the mounting hole. In the present invention, the “wall portion” refers to any portion of the wall portions that form the housing. The wall portion provided with the mounting hole is not necessarily limited to the rear surface side (the mating surface side with the mating connector is the front surface side and the surface side opposite to the front surface side), and the lower surface side, the upper surface side, or It may be on the side.

In the present invention, the "terminal fitting" may be male or female. However, in the case where the terminal metal fittings are elongated plate members and the male side metal terminal fittings are easier to mount in the mounting holes of the housing than the female terminal metal fittings, the preferred embodiment is preferable. Form. The number of terminal fittings attached to the housing is not limited, and may be one or two or more. In addition,
When the housing is provided with a plurality of types of terminal fittings, if at least one of them corresponds to the “terminal fitting” of the present invention, the connector belongs to the technical scope of the present invention.

In the present invention, the cross-sectional shape of the "mounting hole" is formed in accordance with the cross-sectional shape of the position where the terminal fitting is mounted in the mounting hole. The position where the "recess" is provided does not matter as long as it is the edge of the mounting hole. However, if the cross-sectional shape of the terminal fitting is polygonal (triangular, quadrangular, or having more vertices),
It is preferably provided at the apex portion. By doing so, when the terminal fitting is inserted into the mounting hole portion, it is possible to avoid the apex portion of the terminal fitting scraping off the hole edge of the mounting hole portion. In addition, since stress concentration is likely to occur at the corners of the mounting hole portion, it is easy to avoid damage to the mounting hole portion by dispersing the stress in that portion. If the conventional mounting hole has a hole edge portion that is easily damaged due to the relationship between the terminal fitting and the housing, it is possible to provide a recess only at that portion. According to the first aspect of the invention, since the concave portion is provided at the hole edge of the mounting hole portion, when a large force is applied to the hole edge of the mounting hole portion when inserting the terminal fitting into the mounting hole portion. However, since the concave portion absorbs the force, damage to the hole edge portion of the mounting hole portion can be avoided.

According to a second aspect of the present invention, in the first aspect of the present invention, the portion of the terminal fitting located in the mounting hole has a polygonal cross-section, and the recess is provided at each vertex of the polygon. It is characterized by being provided. In the present invention, the “polygon” means a figure having three or more vertices. According to the second invention, when the terminal fitting is inserted into the mounting hole, the corner portion of the terminal fitting is
It is possible to avoid the situation where the edge of the mounting hole is scraped off. in addition,
By providing the concave portion at the corner portion where stress concentration is likely to occur, it is easy to avoid damage to the hole edge of the mounting hole portion. Also,
It is preferable that the concave portion is provided substantially toward the center of the outer corner of each vertex of the polygon. Here, "substantially in the center" means near the center of the outer angle, and means that the width is slightly smaller than that in the case of "center". With this configuration, since the recess is provided substantially toward the center of the outer corner at each apex, when the terminal fitting is pushed into the mounting hole, it becomes easier to evenly distribute the force to the hole edge portion. It becomes easier to avoid damage to the edges.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described with reference to the drawings. However, the technical scope of the present invention is not limited to these embodiments, and the gist of the invention will be described. It can be implemented in various forms without modification. Moreover, the technical scope of the present invention extends to an equivalent range.

FIG. 1 shows a front view of the housing 1. The housing 1 is integrally formed of a synthetic resin in a substantially rectangular parallelepiped shape. For example, in a state where the tab portion 7 which is one end portion of the terminal fitting 2 is accommodated therein, the housing 1 is, for example, a printed board 9
Fixed to. The housing 1 is a front surface side (a surface side to which a mating connector (not shown) is fitted, and a surface side shown in FIG. 1)
It is in the shape of a hood that opens toward. Further, the back wall portion 3 (corresponding to the “wall portion” in the present invention) of the housing 1 has a thickness direction (a front-back direction in the present embodiment).
A mounting hole portion 4 is provided so as to penetrate therethrough. In this housing 1, three terminal fittings 2 are arranged in a row in a row at predetermined intervals, and mounting holes 4 are opened according to the positions of the terminal fittings 2. Mounting hole 4
The cross-sectional shape of is the same as or slightly smaller than the cross-sectional shape of the portion located in the mounting hole portion 4 when the terminal fitting 2 is fitted. In this way, when the terminal fitting 2 is inserted into the mounting hole portion 4, the edge of the hole is brought into close contact with the peripheral edge of the terminal fitting 2, so that the terminal fitting 2 is held with a predetermined holding force.

Further, at each apex of the rectangular cross section of the mounting hole 4, there is provided a recess 6 for avoiding contact with the edge 5 of the terminal fitting 2 (see also FIG. 7). . The recess 6 is formed by recessing in a substantially U shape toward the center of the outer corner at each apex of the mounting hole 4. Further, on the back surface side of the inner wall portion 3, a region including the three mounting hole portions 4 is projected toward the back surface side as compared with other portions, and the thick wall portion 12 is in a thick state. It is said that. The thick-walled portion 12 ensures a long press-fitting margin of the terminal fitting 2 (the front-rear length in which the terminal fitting 2 is held by the hole edge of the mounting hole portion 4), and the holding force of the terminal fitting 2 is improved. There is.

The terminal metal fitting 2 is formed by bending an intermediate portion of an elongated conductive metal plate material into an L shape (more specifically, the linear terminal metal fitting 2 is from the rear surface side of the housing 1). After being inserted into the mounting hole portion 4, it is formed into an L shape by being bent downward at a predetermined position in the rear of the housing 1.). Both ends of the terminal fitting 2 are slightly tapered, of which the tab portion 7 housed in the internal space of the housing 1
Is connected to a mating female terminal fitting (not shown). On the other hand, the connecting end portion 8 that is projected from the back wall portion 3 of the housing 1 and hangs downward is pushed into the press-fitting hole 10 provided in the printed circuit board 9. Further, the cross-sectional shape of the terminal fitting 2 is a rectangular shape having substantially the same shape except for both end portions 7 and 8.

Next, the operation and effect of this embodiment configured as described above will be described. The tab portion 7 of the terminal fitting 2 is inserted into the mounting hole portion 4 of the housing 1 from the rear surface side (the surface side where the thick portion 12 is provided) of the inner wall portion 3. At the time of this insertion operation, the terminal fitting 2 acts so as to spread the hole edge of the mounting hole portion 4. At this time, according to the present embodiment, since the recess 6 is provided at the hole edge of the mounting hole portion 4, when the terminal fitting 2 is inserted into the mounting hole portion 4,
Even if a large force is applied to the hole edge of the mounting hole portion 4,
By absorbing the force of the concave portion 6, damage to the hole edge portion of the mounting hole portion 4 can be avoided. Further, according to the present embodiment,
Since the concave portion 6 is provided at the apex portion in the cross section of the terminal fitting 2, when the terminal fitting 2 is inserted into the mounting hole portion 4, the corner portion of the edge portion 5 scrapes off the hole edge of the mounting hole portion 4. The situation can be avoided. In addition, by providing the concave portion 6 at the corner portion where stress concentration is likely to occur, damage to the hole edge of the mounting hole portion 4 can be more easily avoided.

Further, according to the present embodiment, since the concave portion 6 is provided substantially toward the center of the outer corner at each apex, when the terminal fitting 2 is pushed into the mounting hole portion 4, the concave portion is evenly arranged on the hole edge portion. The force will be distributed more easily to the holes, and damage to the edge of the hole can be avoided more easily. In this way, after the terminal fitting 2 is mounted in the mounting hole portion 4, the intermediate portion of the terminal fitting 2 is bent downward so that the connector 11
Assembly is completed. After the assembly of the connector 11 is completed, the connection end portion 8 of the terminal fitting 2 is inserted into the press-fitting hole 10 of the printed circuit board 9 so that the connector 11
Assembly is completed.

[Brief description of drawings]

FIG. 1 is a front view of a housing according to this embodiment.

FIG. 2 is a partially enlarged view of a circle R in FIG.

FIG. 3 is a sectional view taken along the line AA in FIG.

FIG. 4 Rear view of housing

5 is a partially enlarged view of a circle S in FIG.

FIG. 6 is a front view when the terminal fitting is attached to the housing.

7 is a partially enlarged view of a circle Q in FIG.

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

FIG. 9 is a rear view when the terminal fitting is attached to the housing.

FIG. 10 is a rear view of the housing in the conventional example.

11 is a partially enlarged view of a circle T in FIG.

FIG. 12 is a rear view of a conventional example in which a terminal fitting is attached to a housing.

[Explanation of symbols] 1 ... Housing 2 ... Terminal fittings 3 ... Back wall (wall) 4 ... Mounting hole 5 ... Edge of terminal fitting 6 ... recess 11 ... Connector

Claims (2)

[Claims] 1. A connector comprising: a housing having a mounting hole portion that penetrates a wall portion in a thickness direction; and a terminal fitting integrated with the housing by being inserted into the mounting hole portion. The connector is characterized in that a recess is provided at a hole edge of the mounting hole. 2. A sectional shape of a portion of the terminal fitting located in the mounting hole portion is polygonal, and the recesses are provided at respective apexes of the polygonal shape. The connector according to Item 1.