JPH0334852Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" This invention relates to connectors used in electronics, communication devices, electronic computers, etc.

``Prior Art'' As shown in FIG. 3A, in a conventional connector, contacts 3 are press-fitted into contact housing holes 2 extending in the front-rear direction of a connector housing 1, and are used for electrical connection with, for example, lead wires. A plate-shaped terminal portion 3a for performing this is protruded from the contact housing hole 2 to the outside. The tip of the contact body 3b housed in the contact housing hole 2 is located at the front of the connector housing 1 or slightly inside.

A press-fitting part 3c for press-fitting the contact 3 into the contact housing hole 2 is formed between the contact body 3b and the terminal part 3a. The press-fitting portion 3c is formed to be wider than both side edges of the terminal portion 3a by a stepped portion 3d, and sawtooth-like protrusions 3e are formed protruding from both side edges. A first socket piece 3f is formed extending from the press-fitting part 3c in a direction opposite to the terminal part 3a, and a second socket piece 3g is arranged to face the first socket piece 3f. One edge of the second socket pieces facing each other and close to the press-fitting part 3c is connected to each other by a connecting part 3h. The plate-shaped portion of each of the first and second socket pieces 3f and 3g located closer to the tip of the socket piece than the connecting part 3h is near where the edge 3i of the connecting part 3h intersects with the socket piece.
The first and second socket pieces 3f and 3g are bent slightly toward each other, and the distance between the opposing first and second socket pieces 3f and 3g is narrower on the tip end side than on the connection part 3h side. A curved portion 3j is formed at the tip of the first and second socket pieces to facilitate insertion of a pin contact (not shown) of a mating connector to be connected to this connector. The first and second connected by the above-mentioned connecting part 3h
The socket pieces 3f and 3g constitute a contact body 3b.

A plurality of substantially rectangular contact storage holes 2 for press-fitting contacts 3 are arranged in the connector housing 1 in parallel with each other in the front-rear direction of the connector. As shown in FIG. 3c, the wall surface of the contact storage hole 2 that comes into pressure contact with the serrated protrusion 3e of the contact 3 is cut in a portion corresponding to the plate thickness of the press-fit portion 3c to form a pair of guide grooves 2a. The dimension W _H between these guide grooves 2a is set to be slightly smaller than the distance W _C between the tips of the serrated projections 3e, so that the press-fitted part 3c can be held under pressure.

"Problems with the Prior Art" When the press-fitting part 3c is press-fitted along the guide groove 2a, the serrated protrusions 3e formed on both end edges of the press-fitting part 3c reduce the distance W _H between the pair of opposing guide grooves 2a.
Press the left and right walls in the direction that increases the These forces pressing the left and right wall surfaces are balanced between adjacent contacts, and have little influence on the other contacts. However, the force exerted by the contacts located at both ends of the guide groove to press the wall surface of the guide groove toward the outside of the connector is not balanced with other forces and constantly presses the connector housing. For this reason, warpage is likely to occur in the connector in the direction indicated by reference numeral 4 in FIG. 3A.

The purpose of this invention is to provide a connector that is less likely to warp.

"Means for Solving the Problem" According to this invention, a jetty that protrudes from one side of the contact housing hole and extends in the front and back direction is integrally formed, and the contact has the jetty between the contact body and the terminal part. A press-fitting portion is provided in close proximity to one surface on which a jetty is formed, and the press-fitting portion of the contact is provided with a press-fitting portion that is closer to the one surface on which a jetty is formed than the connecting portion between the press-fitting portion and the contact body and the terminal portion. A pair of clamping edges are formed extending in the front-rear direction to clamp both side surfaces of the pier, and serrations are formed on the serrations, and the serrations are press-fitted to the sides of the jetty. In contact with the formed surface, guide grooves extending in the front-rear direction are formed on both surfaces adjacent to this surface, and the press-fit portion is formed with a guide surface that closely opposes each groove side surface of these guide grooves.

``Example'' Figure 1 shows an example of this invention.
Portions corresponding to those in the figures are designated by the same reference numerals, and redundant explanation will be omitted. The width of the press-fitting part 3c is made larger than that of the conventional example shown in FIG. 3, and both edges of the press-fitting part on which the serrated protrusions 3e are formed are bent so as to face each other on the side opposite to the second socket piece 3g. It will be done.

A protrusion 2b protruding from one surface 6 adjacent to the guide groove 2a of the contact storage hole 2 and extending in the front-rear direction is integrally formed. That is, it is assumed that the guide grooves 2a are formed on both inner surfaces adjacent to and in contact with the surface 6 on which the jetty 2b is formed.

The contact 3 is provided with the press-fitting part 3c close to and facing the surface on which the jetty 2b is formed, and the press-fitting part 3
so that both edges of c sandwich the sides of jetty 2b,
It is press-fitted into the contact housing hole 2, and the serrated protrusion 3e
is press-fitted to the side surface of the jetty 2b. in this case,
Both side edges of the press-fitting portion 3c constitute sandwiching edges 3k that sandwich the jetty 2b.

Therefore, the clamping edge 3k is larger than the connecting portion between the press-fitting portion 3c, the contact body 3b, and the terminal portion 3a.
It approaches the surface 6 on which the jetty 2b is formed and extends in the front-rear direction.

The width W _H1 of the jetty 2b is the width of the opposing serrated projection 3e.
The interval W _C1 is set slightly larger than the interval W C1 so that the sawtooth protrusions 3e can sufficiently press both sides of the jetty 2b. Note that the width W _H3 of the guide groove 2a and the distance W _H2 between the opposing guide grooves are the thickness of the press-fit portion 3c, respectively.
It is set slightly larger than W _C3 and width W _C2 , and even if a contact is press-fitted, no force is applied in a direction that would change these dimensions W _H2 and W _H3 of the contact housing hole 2.

When the press-fitting portion 3c is press-fitted, a planar guide surface 5 is formed in a portion of both guide grooves 2a that closely opposes each groove side surface. In this example, the guide surface 5 is the press-fit portion 3c.
The entire outer surface in the thickness direction. Guide surface 5
moves along the groove side surface of the guide groove 2a by the press-fitting operation, thereby regulating the press-fitting direction of the contact and guiding the contact so that it is press-fitted along the surface on which the jetty 2b is formed.

FIG. 1c shows a state in which the contact 3 is housed in the contact housing hole.

FIG. 2 shows the main part of another embodiment of this invention, in which the press-fitting part 3c is pushed out toward the jetty 2b so that its side edges are approximately U-shaped, and the center of the pushed-out plate surface is shown in FIG. A punching hole 3l is punched out in the thickness direction of the plate surface so that both sides of the jetty 2b can be held between the parts. A pair of opposing edges of the punched hole 3l along the front-rear direction of the connector constitute a clamping edge 3k, and a sawtooth protrusion 3e is integrally formed on the clamping edge 3k. Therefore, the clamping edge 3k is closer to the surface 6 on which the jetty is formed than to both the connecting portions between the press-fitting portion 3c and the contact body and terminal portion. The distance W _C1 between the opposing serrated protrusions 3e, the width and thickness W C2, W _C3 of the press-fit portion _3c are the same as the dimensions of each part of the corresponding contact storage hole 2 and the case described in the embodiment of FIG. Set to relationship.

[Effect of the invention] According to this invention, the serrated projections formed on the pair of clamping edges press and engage both sides of the jetty in a direction that reduces the width of the jetty, thereby locking the contact. The forces exerted by the serrated protrusions of the pair of clamping edges on both sides of the jetty are equal in magnitude and opposite in direction, so they balance each other, and these forces are applied to the corresponding contact housing hole and the adjacent connector housing. Since the degree of influence on each part is considerably smaller than in the conventional example, warping of the connector can be prevented.

When the contact is press-fitted, the guide surface of the contact moves along the side surface of the guide groove to guide the press-fitting direction, so that the contact is locked in a fixed posture. In addition, the work of locking the contact is easy because the contact only needs to be moved in the direction of press-fitting.

In the explanation so far, the contact body is the body of a so-called socket contact into which another connector pin is inserted, but in this invention, the contact body constitutes a pin, and the tip of the pin is inserted into the connector housing. It is clear that a so-called pin contact protruding from the front surface may also be used.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the main part of an embodiment of this invention, FIG. 2 is a perspective view showing the main part of another embodiment of this invention, FIG. 3A is a perspective view of a conventional connector, FIG. 3B is a perspective view of the contacts of the connector of FIG. 3A, and FIG. 3C is a perspective view of the contact housing hole of the connector of FIG. 3A.

Claims (1)

[Scope of Claim for Utility Model Registration] In a connector in which a plurality of contact housing holes extending in the front and back direction are formed in an array in a connector housing, and contacts are press-fitted and held in each of the contact housing holes, one surface of the contact housing hole is provided. A protruding bulge extending in the front-rear direction is integrally formed, and the contact is provided with a press-fitting part between the contact body and the terminal portion, which closely opposes one surface on which the bulge is formed, and the press-fitting part has a A pair of clamping edges extending in the front-rear direction are formed closer to one surface on which the jetty is formed than both connecting parts between the press-fitting part and the contact body and the terminal part, and gripping both sides of the jetty; Serrated protrusions are formed on these clamping edges, and the serrated protrusions press into engagement with the side surface of the jetty, and are in contact with and adjacent to the surface of the contact storage hole on which the jetty is formed. A connector, wherein guide grooves extending in the front-rear direction are formed on both surfaces, and guide surfaces are formed in the press-fitting portion, respectively, and are closely opposed to groove-reformed side surfaces of both the guide grooves.