JPH0317412Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a terminal holding structure for a connector in which a case is attached to a housing housing connection terminals.

[Prior Art] For example, in order to attach a solder terminal to the casing of a light electrical device, the solder terminal is fixed to the housing, and the housing is inserted into a hard case connected to a panel board of the casing. There is. In this case,
The solder terminal needs to be securely fixed within the housing, and this is often achieved by a locking piece provided on the housing. This locking piece is arranged along the outer surface of the housing, for example, in a cantilever shape from the front side of the housing.
There is a problem that the locking force is weak due to the cantilever shape. Also, when inserting the housing into the case, the free end of the locking piece may lift up.
It also has drawbacks, such as the fact that it may be difficult to insert the housing into the case.

[Object of the invention] An object of the invention is to provide a terminal holding structure for a connector that can eliminate the above-mentioned drawbacks, firmly hold a connecting terminal, and easily insert a housing into a case.

[Summary of the invention] The gist of the invention to achieve the above objectives is as follows:
In a connector in which a connecting terminal is inserted into a housing having electrical insulation properties and a hard case is attached to the housing, a both-end support structure facing the outer surface of the housing and having elasticity and locking the connecting terminal is provided. A locking piece is provided along the insertion direction of the front connection terminal,
The terminal holding structure of the connector is characterized in that the inner surface of the case is provided with a pressing part that bulges out in an arc shape along the insertion direction in order to press the center part of the locking piece inward.

[Embodiments of the invention] The invention will be described in detail based on illustrated embodiments.

In the drawings, reference numeral 1 denotes solder terminals, and the solder terminals 1 are housed in a plurality of rows, for example, in two upper and lower stages, in each housing section in a housing 2 made of electrically insulating synthetic resin. The tips of these solder terminals 1 protrude to the front of the housing 2,
The rear end portion (not shown) is used as a wire connection portion, to which wires are individually connected and bundled as a wire bundle 3.
The housing 2 is inserted into a case 4 made of metal or hard synthetic resin and fixed to a panel plate or the like, for example. Both ends are supported by providing slits on both sides of the upper and lower surfaces of the housing 2 along the insertion direction of the solder terminal 1.
A band-shaped locking piece 5 that can be elastically expanded outward is provided. A protrusion 7 having a sloped portion 6 is provided inside each of these locking pieces 5, and is adapted to engage with a hole 8 provided in each solder terminal 1. The inner surface of the case 4 corresponding to the outside of the locking piece 5 has a gentle arc shape along the longitudinal direction of the locking piece 5, and has a pressing part 9 whose apex contacts the locking piece 5. has been done.

Therefore, when assembling, when the solder terminal 1 to which the electric wire is connected in advance is inserted from the rear end of the housing 2, the tip of the solder terminal 1 first comes into contact with the slope 6 of the protrusion 7 of the locking piece 5; As shown by the dotted line in FIG. 2, the locking piece 5 passes while being bulged outward. When a predetermined position is reached, the solder terminal 1 is stopped by a stopper (not shown), and at the same time, the protrusion 7 is inserted into the hole 8 of the solder terminal 1, and the locking piece 5 is restored to its original shape and locked. It will be done. After all the solder terminals 1 are inserted into the housing 2, by pushing the housing 2 into the case 4, each locking piece 5 is pressed by the arc-shaped pressing part 9 of the case 4, and the locking piece 5 is pressed. Since outward deformation is impossible, the solder terminal 1 is prevented from accidentally falling off. Furthermore, when inserting the housing 2 into the case 4, since the pressing part 9 of the case 4 has an arc shape, insertion becomes easy, and since the locking piece 5 is supported at both ends, it is easy to insert the housing 2 into the case 4. The locking force becomes extremely large.

Further, in the embodiment, the solder terminal 1 is used as the connection terminal, but it goes without saying that there is no problem in using other types of connection terminals.

[Effect of the invention] As explained above, the terminal holding structure of the connector according to the invention locks the connecting terminal with the locking pieces supported at both ends, and also presses the locking pieces with the arc-shaped pressing part of the case. Because I added it,
The locking force is extremely large, the reliability is high, and furthermore, the housing can be easily inserted into the case.

[Brief explanation of drawings]

The drawings show an embodiment of the terminal holding structure of a connector according to the present invention, and FIG. 1 is a partially cutaway perspective view thereof, and FIG. 2 is a sectional view of the main part. Reference numeral 1 designates a soldering terminal, 2 a housing, 3 an electric wire, 4 a case, 5 a locking piece, 6 a sloped portion, 7 a protrusion, 8 a hole portion, and 9 a pressing portion.

Claims (1)

[Claims for Utility Model Registration] 1. A connector in which a connecting terminal is inserted into an electrically insulating housing and a hard case is attached to the housing, wherein the connecting terminal has elasticity facing the outer surface of the housing. A locking piece with a both-end support structure for locking the terminal is provided along the insertion direction of the connection terminal, and a locking piece is provided on the inner surface of the case along the insertion direction to press the center part of the locking piece inward. A terminal holding structure for a connector characterized by having a pressing part that bulges out in an arc shape. 2. The connector terminal holding structure according to claim 1, wherein the locking piece has slits on both sides to provide elasticity. 3. The connector terminal holding structure according to claim 1, wherein a protrusion that engages with the hole of the connection terminal is provided on the inside of the locking piece.