JPS6029824Y2 - terminal device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a terminal device such as a speaker terminal, and the object is to enable the end of a cord to be connected to a stereo main body, etc. with one touch, and to enable the terminal device itself to be easily assembled. The purpose is to

Conventionally, when connecting a stereo main body and left and right speakers, the tip of a cord coming out of the speaker box was wound around a terminal on the back of the stereo main body, and then a nut was screwed to secure the cord.

Therefore, it has the disadvantage that installation is time-consuming and labor-intensive.

In order to eliminate such drawbacks of the conventional cords, cords have been used which allow the tips of the cords to be electrically and mechanically connected very easily by turning the knob approximately half a turn.

An example of this will be explained with reference to FIGS. 1 to 3. Reference numeral 1 denotes a board that is attached to the back of the stereo main body. A cylindrical body 2 is fixed to this board 1. A cut groove 3.3' is provided at the bottom of the cut groove, and locking portions 4, 4 are formed at the bottom of the cut groove.

Furthermore, a projection 5 for a stopper is formed on the lower surface of the locking portion 4 of the cylindrical body 2.

Reference numeral 6 denotes a rotator having a knob 7 on the upper part, a housing chamber 8 formed on the inner surface of the lower part, and a flange 9 on the outer periphery of the lower part of the rotor 6.
A large-diameter locking flange 10 is formed in about 1/4 of this flange portion 9.

Furthermore, a cavity 11 is provided in this knob part 7, and this cavity 11
A small hole 13 is formed eccentrically from the center of the rotator 6 in a wall surface 12 existing between the rotor 6 and the housing chamber 8, so that the cavity 11 and the housing chamber 8 are communicated with each other.

Reference numeral 15 denotes a holding fitting to be accommodated in the accommodation chamber 8, and as shown in FIG. 3, it is formed into a substantially U-shape when viewed from the front.

That is, a narrow rising piece 18 is formed at the center of the upper part of the side plate 17 provided on one side of the bottom part 16, and this bent part 17 and the side plate 1
A notch 19 is provided at the bent portion of the bottom portion 16, and a narrow raised portion 20 is formed on the other side of the bottom portion 16 at approximately the same height as the raised piece 18.

Reference numeral 21 denotes a locking piece formed in a substantially U-shape from the front, and holes 22 and 23 are formed in the flat surface in the center for inserting the tips of the upright piece 18 and the upright part 20, respectively.
, 24 are provided with a U-shaped notch in the center and bent inward to form a hooking piece 25.25.

Note that a terminal piece 27 is formed continuously on the flat surface of this locking piece 21.

Then, the spring 28 is inserted into the upright portion 20 of the holding fitting 15, and the holding fitting 15 is accommodated in the storage chamber 8.

That is, the bottom portion 16 is brought into contact with the wall surface 12, and the small hole 13 and the notch 19 are aligned with each other, and the container is housed in the storage chamber 8.

Next, this rotator 6 is rotatably inserted into the base body 1 from the back side of the base plate 1 to engage the locking collar 10 and the collar portion 9 with the lower surface of the locking portion 4 of the cylindrical body 2. The upright piece 18 and the upright part 20 are inserted into the holes 22 and 23 provided in the flat surface of the stopper piece 21.
The locking piece 21 is brought into contact with the flange 9 and the locking flange 10 of the rotator 6 by inserting the tip of the locking piece 21, and the locking piece 25, which is present in the bent pieces provided on both sides of the locking piece 25. The cut 3 of the cylindrical body 2,
3 and locks it in the locking parts 4, 4, the spring 28
Then, the locking piece 21 is repelled, and the locking pieces 25 and 25 are locked to the locking portions 4, 4, and will not come off.

Next, the tip of the cord (not shown) connected to the speaker (not shown) is stripped to expose the core wire (not shown), and this core wire is inserted into the small hole 13 in the cavity 11 of the bastard part 7. do.

Since this small hole 13 and a notch 19 provided in the holding fitting match, the core wire is positioned up to within this notch 19.

After that, if this legitimate child part 7 is held and the rotator 6 is rotated in either the left or right direction within the range until the locking collar 10 of the rotator 6 engages with the protrusion 5 and stops, The locking metal fitting 15 is locked by a locking piece 21 attached to the cylinder 2 and does not rotate, and only this rotator 6 rotates, and as a result, the core wire is connected to the wall surface of the storage chamber 8 and the holding metal fitting 15. It is held between the metal parts and electrically connected to the holding metal fittings 15.

However, when assembling such a conventional terminal device, the rotator 6 is inserted into the cylindrical body 2 of the board 1 from the back side, and then the holding fitting 15 is stored in the housing chamber 8 of the rotator 6. Furthermore, a spring 28 is arranged in the center of the holding fitting 15,
Since the locking piece 21 must be attached to the cylindrical body 2 with care so that the spring 28 does not pop out, there is a problem that assembly work is extremely difficult and mass production is difficult.

In addition, a special spring 28 is installed to elastically hold the lead wire.
It is also disadvantageous in terms of the number of parts because it is necessary to incorporate

The present invention provides a terminal device that solves these conventional problems.

An embodiment of the present invention will be described below with reference to FIGS. 4 to 9.

In FIGS. 4 to 9, reference numeral 30 denotes a board integrally formed of resin, and has two arcuate pieces that guide the removal prevention pieces 31a, 31a protruding from the lower end of the rotator 31. guide grooves 30a, 30a, through holes 30b, 30b provided at one end of each guide groove 30a, 30a for passing the above-mentioned removal prevention pieces 31a, 31a, and each guide groove 30a.
, provided at the other end of 30a, the above-mentioned removal prevention piece 31at3
Rotation prevention recesses 30c, 30 that allow 1a to fall slightly
C, and a substrate 30 for attaching a holding fitting 32 to be described later.
A recess 30d provided from the front side of the board 30 and a terminal plate 3 formed from the back side of the board 30 toward the recess 30d, which will be described later.
3, a recess 30f having a step 30e for attaching 3;
A storage chamber 30g is formed to store the tip of a core wire of a lead wire (not shown) such as a cord.

On the other hand, the rotor 31 has a long hole 31b for inserting the core wire of the lead wire, and a guide surface 31 provided inside the long hole 31b.
c and a through hole 31d for inserting a lead wire, which is provided at the lower end of the guide surface 31c, that is, at an eccentric position of the rotor 31.

As shown in FIG. 8, the holding fitting 32 includes an insertion part 32a bent into a U-shape, a biasing part 32b with one surface bent at a substantially right angle, and a part of the biasing part 32b. The guide portion 32c is formed by bending the guide portion 32c diagonally and is constructed of a single conductive metal plate.

Further, as shown in FIG. 9, the terminal plate 33 includes an insertion portion 33a and a drawer portion 33b bent at approximately right angles, a cut-and-raised piece 33c provided on the insertion portion 3a, and a drawer portion 33b.
The stopper 33d is bent at a substantially right angle from the side surface of the stopper 33d.

In the above configuration, when assembling this terminal device,
First, the insertion portion 32a of the holding fitting 32 is press-fitted into the recess 30d from the front side of the substrate 30.

At this time, the two surfaces of the insertion portion 32a are urged in a direction away from each other, and each surface is pressed against the inner surface of the recess 30d, so that the holding fitting 32 does not fall off from the substrate 30.

Next, the two removal prevention pieces 31a of the rotor 31 are provided.

31a protrudes from the back side of the board 30 through the through-holes 30b, 30b, and each removal prevention piece 31a, 31a is moved into the arc-shaped guide groove 30a, 30a. It can be mounted rotatably against the

After that, when the insertion part 33a of the terminal board 33 is press-fitted into the recess 30f from the back side of the board 30, the cut and raised piece 33c is inserted into the stepped part 30.
e, this terminal plate 33 is also attached to the board 30 without falling off, and since the insertion portion 33a is pressed against one surface of the insertion portion 32a of the holding fitting 32, the holding fitting 32 and the terminal Plate 33 is electrically connected.

Also, at this time, a stopper 33d provided on the terminal plate 33
are arc-shaped guide grooves 30a, 30a provided in the substrate 30.
inserted into one side.

Therefore, the rotation angle of the rotor 31 is regulated by one of the removal prevention pieces 31a coming into contact with this stopper 33d, and as a result, the two removal prevention pieces 31a and 31a are
This prevents the rotor 31 from fitting into the two through holes 30b, 30b, and prevents the rotator 31 from coming off.

When assembled as described above, the biasing portion 32b of the holding fitting 32 always biases the rotor 31 in the direction away from the base plate 30, as shown in FIG. The prevention pieces 31a, 31a abut on the periphery of the guides R30a, 30a with such a frictional force.

When connecting a lead wire, the core wire of the lead wire is inserted into the elongated hole 31b of the rotator 31, and inserted into the through hole 31d along the guide surface 31c.

Below this through hole 31d, a biasing portion 32 of the holding fitting 32 is provided.
Since the guide portion 32c provided at b is located, the tip of the core wire is inserted into the storage chamber 30g of the board 30 while being guided by the guide portion 32c.

When the rotator 31 is rotated approximately 90 degrees in this state, the core wire of the lead wire is held elastically between the lower end of the guide surface 31c of the rotator 31 and the biasing portion 32b of the holding fitting 32, and the core wire is rotated again. When the two removal prevention pieces 31a and 31a of the child 31 fit into the recess 30C930C of the board 30, the rotor 31 is lightly locked, and in this state, the connection of the lead wires is completed.

In addition, when removing the lead wire, push the rotator 31 lightly and remove the above-mentioned removal prevention pieces 31a, 31a and the recess 30c.
30c, and move the rotator 31 through its through hole 31d.
The lead wire can be pulled out by rotating the lead wire until the biasing piece 32b of the holding fitting 32 and the biasing piece 32b of the holding fitting 32 are aligned with each other.

As described above, according to the present invention, both the holding fitting and the terminal board are fixed by simply being press-fitted into the recess of the board, and there is no chance of them falling off during assembly, which greatly facilitates the assembly work of the terminal device. can do.

Further, the connection between the holding fitting and the terminal plate can be carried out at the same time as the adjustment work, and since the two are elastically crimped and connected, the connection state can be made extremely stable.

Furthermore, since the holding fitting itself is provided with a biasing part, and the core wire of the lead wire is held elastically between this biasing part and the rotator, a coil spring can be incorporated as in the past to apply the biasing force. Excellent effects can be obtained, such as the fact that there is no need to apply

[Brief explanation of the drawing]

1 to 3 are a top view, a sectional view, and a perspective view of essential parts of a conventional example; FIGS. 4 to 6 are a top view, a sectional view, and a bottom view of an embodiment of the present invention; FIG. The exploded cross-sectional view of the same embodiment, and FIGS. 8 and 9 are perspective views of the holding fitting and terminal board used in the same embodiment. 30... Board, 30a... Guide groove, 3
0b...Common hole, 30c...Engagement recess, 30d...Recess for holding fitting insertion, 30e
...Stepped portion, 30f...Recess for inserting the terminal board, 30g... Lead wire storage chamber, 31...
...Rotator, 31a... Pull-out prevention piece, 31
b...Long hole, 31c...Guide surface, 31
d...Through hole, 32...Holding metal fitting, 32
a...Insertion part, 32b...Biasing part, 3
2c...Guiding part, 33...Terminal board, 3
3a...Insertion part, 33b...Drawer part, 33c...Cut and raised piece, 33d...
Stopper.

Claims (1)

[Scope of utility model registration request] A board with a recess for inserting a holding metal fitting on the front side and a stepped recess for inserting a terminal board from the back side toward the recess, an insertion part bent into a U-shape, and a piece thereof. A holding fitting in which a biasing part bent at a nearly right angle and a guide part provided on the side surface of the biasing part are integrally formed of a conductive metal plate, an insertion part and a pullout part bent at a nearly right angle. a terminal plate formed integrally with the cut and raised piece formed on the insertion portion using a conductive metal plate; and a rotator rotatably attached to the front side of the board and having a through hole at an eccentric position. The insertion portion of the holding fitting is press-fitted into the holding fitting insertion recess of the board, the insertion portion of the terminal board is press-fitted into the stepped recess of the board, and the cut and raised piece of the terminal board is pressed into the holding fitting insertion recess of the board. While engaging the stepped portion of the stepped recess, the insertion portion of the terminal plate and the insertion portion of the holding fitting are elastically crimped, and the through hole of the rotator is aligned with the guide portion of the holding fitting. , the core wire of the lead wire is inserted between them, and by rotating the rotating element in this state, the core wire of the lead wire is elastically clamped between the rotating element and the biasing part of the holding fitting. terminal device.