JP3116016B2 - Terminal connection structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a vehicle, a consumer,
The present invention relates to a terminal connection structure used for industrial use.

[0002]

2. Description of the Related Art Conventionally, when connecting a tuning fork type terminal and a tongue type terminal, a pair of upper and lower beams 51, 51 are provided at the tip side of a tuning fork type terminal 50 as shown in FIG. Sharp contact portions 52, 52 are formed facing each other. The tongue-shaped terminal 60 is provided with a tongue 61 extending in a direction orthogonal to each beam 51. And each beam 5
The two terminals 50, 60 are fitted by fitting the tongue pieces 61 orthogonally between the two and pressing the contact portions 52 against the tongue pieces 61.
Electrical connection.

As another connection structure for connector terminals, as shown in FIG. 7, there is a structure using a box-shaped female terminal 70 having an elastic piece 71 therein and a flat male terminal 80. In connecting these terminals 70 and 80, male terminals 8
By inserting 0 into the box portion of the female terminal 70, the elastic piece 71 is pushed down, and a contact pressure is applied by the elastic reaction force, thereby performing electrical connection.

[0004]

By the way, recently,
With the miniaturization of various devices progressing, it is necessary to reduce the size of connectors. In addition, since various devices have been sophisticated, a multi-pole connector is required, and a narrow pitch between terminals is required.

A conventional connection structure is difficult to meet such a demand. FIG. 5 schematically shows a fitting state of the tuning fork type terminal 50 and the tongue type terminal 60. In order to narrow the pitch between the tuning fork type terminal 50 and the tongue type terminal 60, it is necessary to reduce the width WB of the tongue type terminal 60. However,
Since the terminal having this structure does not have a function of securely holding the fitted state, when the width WB is reduced, the margin Wn = (WB−WA) / 2 at the time of fitting with the tuning fork type terminal 50 decreases.
As shown in FIG. 6, if the tuning fork-type terminal 50 and the tongue-shaped terminal 60 move in opposite directions in the pitch direction due to vibration, impact, or the like, the connection may be shifted and released. WA is the thickness of the tuning fork type terminal 50.

Here, in order to increase the allowance Wn, the width WB must be increased as is apparent from the above equation, which is an obstacle to downsizing the connector or narrowing the pitch by increasing the number of poles. .

In the terminal provided with the elastic piece 71 shown in FIG. 7, the flat portion of the male terminal 80 is securely held by the box of the female terminal 70, so that the above-mentioned problem does not occur. However, in this structure, it is necessary to form a box on the female terminal 70,
Basically, it is difficult to reduce the size.

SUMMARY OF THE INVENTION An object of the present invention is to provide a terminal connection structure which can cope with an increase in the number of poles of a connector and a narrow pitch between connector terminals and which is optimal when the connector is downsized.

[0009]

In order to achieve the above object, a connecting structure according to the present invention is characterized in that a tongue of a tongue type terminal is provided in parallel with each beam of a tuning fork type terminal, and a tongue is attached to each beam. And a supporting portion for increasing the distance between the beams by fitting to secure the contact pressure to the tongue piece. When the tongue-shaped terminal is connected to the tuning fork-type terminal, the tongue is fitted to a support provided on each beam while the tongue is in a parallel posture with respect to each beam. Then, the distance between the beams is widened by the fitting of the tongue to the support portion, and a contact pressure is applied to the tongue by the elastic repulsion of these beams, so that the tongue and each beam are electrically connected. You. At this time, the tongue type terminal and the tuning fork type terminal are securely connected via the support portion. Moreover, since the tongue of the tongue-shaped terminal and the beam of the tuning fork-type terminal are provided in parallel with each other and the occupied space is reduced,
It is possible to cope with multi-poles and narrow pitches, and as a result, it is also possible to cope with miniaturization of connectors.

[0010] In the structure of the present invention, it is preferable that the plate width of the tongue piece to be fitted to the support portion is reduced on the distal end side. With this configuration, the tongue piece can be easily fitted to the support portion, and the electrical connection of each terminal can be reliably performed.

[0011] It is also preferable that a locking portion is formed on the tip end of the tongue to lock the support portion when fitted. According to this configuration, the tongue piece fitted to the support portion is prevented from coming off by the locking portion, and each terminal can be reliably connected electrically.

[0012]

An embodiment of the present invention will be described below with reference to the drawings.

In the connection structure shown in FIG. 1, a pair of vertically opposed beams 11 and 11 are formed upright on the tuning fork type terminal 1, while the tongue type terminal 2 is parallel to each beam 11. An upstanding tongue piece 21 is provided.

A tongue piece 21 is provided at the tip end of each beam 11.
Supporting portions 12 and 1 for securing the contact pressure to the tongue piece 21 by extending the distance between the beams 11 by fitting.
2 are provided. The support portion 12 is formed by a folded piece that is folded from the outer side of the beam 11 and faces the beam 11 at a predetermined interval, so that the side of the tongue piece 21 can be fitted between the beam 11 and the folded piece. ing.

The tip of the tongue piece 21 is formed with a tapered portion 22 whose upper and lower corners are obliquely cut away.

When the terminals 1 and 2 are connected, the tongue piece 21 is placed in a parallel posture with respect to the beam 11 and the tongue piece 21 is moved from the tapered portion 22 to the support portion 1 of each beam 11.
2 and 12 are fitted. In this way, as shown in FIG. 2, the distance between the beams 11 is increased in the vertical direction by the fitting of the tongue piece 21 to the support portion 12, and the elastic repulsive force of these beams 11 causes the tongue piece 21 to move. The contact pressure is applied to both the upper and lower surfaces, and the tongue piece 21 and each beam 11 are reliably electrically connected.

Particularly, since the side of the tongue piece 21 is fitted between the beam 11 and the folded piece, the tuning-fork type terminal 1 and the tongue type terminal 2 are fitted to each other. Despite the structure, both terminals do not shift in the pitch direction even if there is vibration or impact.

As described above, the terminals 1 and 2 are securely connected via the support portion 12, and the tongue piece 21 and each beam 1 are connected.
1 is provided in parallel with each other in the same direction and has a small occupied space when incorporated into a connector, so that it is possible to cope with multi-poles and narrow pitches and to cope with downsizing of the connector.

In the embodiment shown in FIG. 3, when the tongue piece 21 is press-fitted into the support portion 12 and fitted to the tip end of the tongue piece 21, the tongue piece 21 engages with the support portion 12. Is formed. By doing so, the locking portion 23 prevents the tongue piece 21 from unexpectedly coming out of the support portion 12 and allows the terminals 1 and 2 to be held in a connected state.

[0020]

As described above, according to the connection structure of the present invention, the tongue of the tongue type terminal is provided in parallel with each beam of the tuning fork type terminal, and the tongue is fitted to and supported by each beam. In addition, since the support portion that secures the contact pressure to the tongue piece by extending the distance between the beams by fitting is provided, it is possible to cope with a narrow pitch between connector terminals when the connector is multi-polarized, It is most suitable for miniaturizing.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a terminal connection structure according to the present invention.

FIG. 2 is a side view showing a connection state of both terminals.

FIG. 3 is a side view showing another embodiment.

FIG. 4 is a perspective view showing a conventional connection structure.

FIG. 5 is an explanatory diagram for explaining a conventional problem.

FIG. 6 is an explanatory diagram of the related art.

FIG. 7 is a perspective view showing a conventional connector example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tuning fork terminal 11 Beam 12 Support part 2 Tongue type terminal 21 Tongue piece 23 Locking part

Continuation of the front page (56) References JP-A-59-112481 (JP, U) JP-A-4-94274 (JP, U) JP-A-54-23293 (JP, U) JP-A-48-8052 (JP) , Y1) (58) Fields surveyed (Int. Cl. ⁷ , DB name) H01R 13/11

Claims (3)

(57) [Claims] A tuning fork terminal having opposing beams;
A terminal connection structure for connecting a tongue-shaped terminal having a tongue-shaped terminal, wherein the tongue-shaped terminal of the tongue-shaped terminal is provided in parallel with each beam of the tuning fork-type terminal, and the tongue is fitted to and supported by each beam. And a support portion for increasing the distance between the beams by fitting to secure a contact pressure on the tongue piece. 2. The terminal connection structure according to claim 1, wherein a plate width of the tongue piece fitted to said support portion is reduced at a tip end side. 3. The terminal connection structure according to claim 1, wherein a locking portion is formed at a tip end of said tongue to lock to a support portion when fitted.