JPH0197379A - terminal device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a terminal device having a self-locking terminal that holds a lead wire in an electrically connected state and prevents it from coming out.

(Prior Art) Terminal devices having this type of self-locking terminal are used in electromagnetic equipment such as discharge lamp ballasts used in lighting equipment, for example.

As shown in FIGS. 6 and 7, this terminal device conventionally consists of a terminal cover 1 and a self-locking terminal 2 housed inside the terminal cover 1.

The terminal cover 1 is made of a synthetic resin that has electrical insulation properties, and has a lead wire insertion hole 3 on the front surface, and communicates with the lead wire insertion hole 3 to accommodate the terminal storage section 4 inside. It is set up in This terminal storage portion 1 is located on the inner wall 5 on the right side of No.F. An upper inner wall 6 facing the upper surface of the communication part of the lead wire insertion hole 3, a lower inner wall 7 opposite to this inner wall 6, a front inner wall 8 where the lead wire insertion hole 3 opens, and an opposite inner wall 8. It is constituted by a terminal insertion opening 9 at the rear.

The above-mentioned child 2 is made of a conductive material 1''-1 having spring properties, such as phosphor aged copper, and is connected to the connecting piece 11 and this connection J.
! The bent piece part 12 is bent downward from the front end of the first part 11 at a substantially right angle, and the bent piece part 12 is bent diagonally in a substantially V shape from the lower end of the bent piece part 12 toward the connecting rod part 11. the locking piece 13, etc., and a fixing piece 14 bent downward at a substantially right angle from the rear end of the connecting piece 11.
is provided with a portion 15 which is cut and raised in the rear central region with the central portion side as a fulcrum and bent forward, and the bent piece portion 12 has a beam-1 wire insertion hole 1G. It is set up. J3, a gap is created between the tip of the locking piece 13 and the connecting piece 11, although it is narrower than the diameter of the core wire 32 of the lead wire 31, which will be described later.

Then, in order to assemble the terminal device to the coil bobbin 21 of the electric appliance, it is necessary to attach the terminal device to the coil bobbin 21.
Press fit the fixing piece 14 of the terminal 2 into the holding groove 24 installed in the terminal block 23 of the The terminal 2 is sandwiched and connected to the connecting piece 11 by the piece 15, and as shown in FIG. Then, fix the terminal cover 1 to the bobbin 21.

In this assembled state, the front end of the connecting piece 11 of the terminal 2, the bent piece 12, the bent piece 12, the locking piece 13, the inner wall 6 of the upper part of the terminal JR bar 1, The locking part 13 comes into contact with the front inner wall 8 and the lower inner wall 7.
There is a gap between the tip of the connector and the connecting piece 11 as before assembly.

Then, insert the lead wire 3 into the lead wire insertion hole 3 of the terminal cover 1.
1 is inserted, the core wire 32 of the lead wire 31 is inserted into the screw 2.
The lead wire enters the lower surface of the connecting piece 11 through the lead wire insertion hole 1G, and is press-fitted between the locking piece 13 and the connecting piece 11 while pushing the locking piece 13 obliquely backward.

When the lead wire 31 is inserted, the core wire 32 of the lead wire 31 is pressed against the connecting piece 11 by the spring force of the locking piece 13 and electrically conductive, and the clamping force of the locking piece 13 causes the lead wire 31 to be electrically conductive. The wire 31 is held and not removed.

(Problem that the invention is not V1?) By the way, the clamping force of the locking piece 13 of the terminal 2 is large (J lead wire 3
The lead wire 3 can be pulled out (J) and the contact resistance can be reduced.
It is necessary to greatly reduce the elastic deformation of the locking part 13 when the locking part 1 is inserted.

However, unlike the conventional terminal device, since the terminal 2 is formed from a conductive material with a spring plate by bending 7+Roe, the distance between the tip of the locking piece 13 and the connecting piece 11 is Since it is difficult to make the lead wire 31 narrower than a certain limit, the clamping force by the lock piece 13 cannot be made too strong, and the lead wire 31
There was a limit to how much it could be used to stop or reduce contact resistance.

Further, the terminal 2 is likely to have bending variations in each part C, and the gap between the tip of the locking piece 13 and the connecting piece 11 is also likely to be uneven. This variation in the gap affects the clamping force of the lead wire, making it difficult to pull out the lead wire 31 and making the contact resistance unstable.

The present invention is based on the above)! This was developed in consideration of IS issues, and the locking piece of the terminal is brought into almost contact with the connecting piece to strengthen the clamping force of the locking piece when connecting the lead wire, making it easier to handle the lead wire. It is an object of the present invention to provide a terminal device that can reliably prevent contact resistance and reduce contact resistance, and can also stabilize the terminals without being affected by variations in bending of the terminals.

[74th Form of the Invention] (Means for Solving Problems) The present invention provides a terminal cover that has a terminal housing inside and has a lead wire insertion hole in a side face that communicates with the terminal housing; In a terminal device comprising a terminal housed in a terminal housing portion of a terminal cover, the terminal includes a connecting piece portion disposed along the axial direction of the lead wire insertion hole of the terminal cover, and this connecting piece portion. A bent portion C is bent from the tip facing the lead wire insertion hole, and a bent portion is bent obliquely from the tip of the bent piece portion toward the connection portion C in the opposite direction from the lead wire insertion hole. and a locking piece part that contacts the connecting piece part with the lead wire inserted through the lead wire insertion hole at the distal end part, and the bent piece part is brought into contact with the inner wall of the terminal storage part of the terminal cover. The terminal cover is housed in such a manner that the tip of the locking section C is in approximate contact with the connecting piece section.

(For Fishing) The present invention is characterized in that by storing the terminal in the terminal housing part of the terminal cover, the bent piece part of the terminal comes into contact with the inner wall of the terminal housing part of the terminal cover and is displaced. The tip of the locking piece at the tip substantially contacts the connecting piece. When the lead wire is inserted, the lock piece deforms significantly, so its spring force, that is, the force for clamping the lead wire becomes stronger.

(Example) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

Note that the same reference numerals are used for the same structural parts as those shown in FIGS. 6 and 7, and the description thereof will be omitted.

In FIGS. 1 to 3, the terminal device is provided with a lead wire insertion hole 3 in the front part and this lead wire insertion hole 3.
A terminal cover 1 that communicates with the terminal cover 1 and has a terminal storage section 4 therein, and a terminal 2 that is stored in the terminal storage section 4 of the terminal cover 1.
That's what I'm thinking.

The terminal cover 1 has two lead wire insertion holes 3 and a terminal accommodating portion 4 integrally arranged side by side, and locking step portions 41 are provided on both sides in the direction in which they are arranged side by side.

Further, the inner wall 8 in which the lead wire insertion hole 3 of the terminal accommodating portion 4 opens is provided with an inclined portion 42 whose lower side is inclined rearward at an inclination angle α.

The terminal 2 is formed by integrally bending a connecting piece 11, a bending piece 12, a locking piece 13, and a fixing piece 14, and a second
As shown in the figure, before assembly with the terminal cover 1, there is a gap between the tip of the locking piece 13 and the connecting piece 11.

In addition, the coil bobbin 2 of the electromagnetic equipment in which the terminal device is assembled
1, two terminal blocks 23 having holding grooves 24 are arranged side by side on the outside of the flange part 22, and a leader wire lead-out part 43 is provided on the flange part 22 facing each terminal block 23, and +'+f at the tip at the outer position in the direction in which the stands 23 are arranged side by side.
Claw portion 44 that engages with the locking step portion 41 of the terminal cover 1
A locking pawl 45 is provided protrudingly.

Then, attach the terminal device to the coil bobbin 21 as shown in Figure 1.
(To assemble this, use the terminal block 23 of this coil bobbin 21.
Press fit the fixing piece part 14 of the terminal 2 into the holding groove 24 of the coil bobbin 21, and pull out the lead wire 26a of the coil 2G wound around the winding body part 25 of the coil bobbin 21 to the terminal 2 side through the lead wire lead-out part 43 of the flange part 22. This lead wire 26a is sandwiched and connected between the terminal piece part 15 and the connecting piece part 11, and then the terminal cover 1 is placed over the terminal 2 from the front, and the terminal 2 is inserted into the terminal storage part 4 through the terminal insertion opening 9. The terminal cover 1 is fixed to the coil bobbin 21 by inserting the terminal cover 1 and engaging the locking step portions 41 on both sides of the terminal cover 1 with the claw portions 44 of the locking claws 45 .

During this assembly, in the process of inserting the terminal 2 into the terminal storage portion 4 of the terminal cover 1, the bent piece 12 of the terminal 2 is inserted into the inner wall 8.
When it comes into contact with the inclined part 42 of the locking piece 12, the bent piece 12 is displaced so that the bending angle with the connecting piece 11 becomes smaller, and the tip of the locking piece 13 approaches the connecting piece 11 accordingly. In the state shown in FIG. 1 in which the terminal cover 1 is assembled to the coil bobbin 21, the tip of the locking piece 13 substantially contacts the connecting piece 11. Note that the bent piece portion 12 of this terminal 2
Even if there is a bending variation between the connecting piece 11 and the connecting piece 11, there is no effect because the connecting piece 11 is forcibly displaced.

In this assembled state, the upper surface of the front end of the connecting piece 11 of the terminal 2, the bent piece 12, and the bent part between the bent piece 12 and the chain-1-lock part 13 are attached to the terminal cover 1. It is in contact with the inner wall 6, the inclined part 42 of the inner wall 8, and the inner wall 7.

Then, insert the lead wire 3 into the lead wire insertion hole 3 of the terminal cover 1.
1, the core wire 32 of the lead wire 31 enters the lower surface of the connecting piece 11 through the lead wire insertion hole 16 of the terminal 2, and the locking piece 13 is pushed diagonally backward. and the connecting piece 11.

In this inserted state of the lead wire 31, the locking piece 13 is located downward by the diameter of the core wire 32 from the cross section (the position indicated by the solid line in FIG. Since the locking piece 13 is greatly deformed to the position shown by the dotted chain line), the spring force that covers the locking piece 13 to return to its original position is strong, and the locking piece 13 connects the core 32 of the lead wire 31. The bulk, that is, the clamping force that presses against the lead wire 31 becomes very strong.
The contact resistance between the core wire 32 of the cold wire 31 and the connecting piece 11 and the locking piece 13 can be reduced.

Further, in the above embodiment, the terminal 10 is attached to the inner wall 8 of the terminal cover 1.
11′i Although a slope is provided to displace the curved piece portion 12,
As shown in FIGS. 4 and 5, the inner wall 8 of the terminal cover 1 may have a vertical surface, and the bent portion 12 of the terminal 2 may be inclined. In other words, the bending angle β of each of the 1n bent piece 12 and the connecting piece 11 of the terminal 2 is made larger than the approximately right angle J, so that the lower part of the bent piece 12 is directed forward (so that it does not protrude inclination). 1
．． ! , during assembly, in the process of inserting the terminal 2 into the terminal housing 1 of the terminal cover 1, the bent piece 1 of the terminal 2
2 comes into contact with the inner wall 8, the bending angle β with the connecting piece 11
The bent portion 11 12 is displaced so that the lock Y1 portion 13 becomes smaller, and accordingly, the tip of the lock Y1 portion 13 approaches the connecting piece portion 11, and the terminal cover 1 is attached to the coil bobbin 21. In the state shown in the figure, the tip of the locking piece 13 substantially contacts the connecting piece 11. In this case as well, the force of clamping the core wire 32 of the lead wire 31 by the locking piece 13 is as same as above. strong.

In addition, a terminal cover 1 having an inclined portion 42 on the inner wall 8 and a terminal 2 in which the bending angle β of the bending piece 12 and the connecting piece 11 is larger than a substantially right angle are combined to lock the terminal cover 1. The tip of the part 13 may be brought into substantially contact with the contact piece part 11.

In the above embodiments, the terminal device is adapted to electromagnetic equipment, but it can be applied to various applications requiring other terminal structures.

[Effect of invention]

According to the present invention, by storing the terminal in the terminal housing portion of the terminal cover, the bent piece portion of the terminal comes into contact with the inner wall of the terminal housing portion of the terminal cover and is displaced, and the bent piece portion of the terminal is displaced. Since the tip of the lock F1 section at the tip can be brought into almost contact with the connection piece, the deformation of the J3 lock piece becomes large when the lead wire is inserted l), and the lead wire is It is possible to strengthen the clamping force, securely secure the lead wires at Fj and +'J, and reduce the contact resistance between the lead wires and the connecting piece, J, and locking piece. It is possible to provide a terminal device that can stabilize the connection without being affected by song variations and has a highly reliable connection.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the terminal device of the present invention.
Figure 2 is a cross-sectional view showing its assembled state.
- Figure 3 is an exploded perspective view of the state in which it is used in Lightning 11 equipment, Figure 4 is a sectional view showing another embodiment of the present invention, Figure 5 is a sectional view of J showing the assembled state, and Figure 6 is A cross-sectional view of a conventional terminal device,
FIG. 7 is a sectional view of the assembled state. 1...Terminal cover, 2...Terminal, 3...Lead wire insertion hole, 4...Terminal storage area, 8...Inner wall, 11...Connection piece part,
12...Bending piece part, 13...Lock piece part, 31...Lead wire, 42...Slanted part.

Claims (3)

[Claims] (1) In a terminal device that includes a terminal cover that has a terminal housing inside and a lead wire insertion hole that communicates with the terminal housing on the side surface, and a terminal that is stored in the terminal housing of the terminal cover. , the terminal includes a connecting piece portion disposed along the axial direction of the lead wire insertion hole of the terminal cover, and a bent piece portion bent from the tip of the connecting piece portion facing the lead wire insertion hole. The lead wire inserted through the lead wire insertion hole is bent diagonally from the tip of the bent piece toward the connection piece in the direction opposite to the lead wire insertion hole. and a locking piece that presses against the terminal cover, and the terminal cover is arranged such that the bent piece comes into contact with the inner wall of the terminal housing part of the terminal cover so that the tip of the locking piece comes into approximate contact with the connecting piece. A terminal device characterized by being housed in a. (2) The inner wall of the terminal housing portion of the terminal cover is provided with an inclined portion that displaces the bent piece from the connecting piece so that the locking piece of the terminal substantially contacts the connecting piece. A terminal device according to claim 1. (3) The bent piece of the terminal should be bent at an approximate bending angle with the connecting piece so that it comes into contact with the inner wall of the terminal storage part of the terminal cover and the tip of the locking piece almost touches the connecting piece. 2. The terminal device according to claim 1, wherein the terminal device is larger than a right angle.