JP2000106231A - Terminal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the size of a wire insertion face part between a wire receiving face part and a locking piece part to reduce the size of a terminal device by improving the insertion property of a wire, even if the size of the wire insertion face part between the wire receiving face part and the locking piece is reduced, and by stabilizing the state of contact with the wire. SOLUTION: A wire receiving face part 22 having a wire receiving face 21 on one side, a wire insertion face part 23 having a wire slot 26, and a locking piece part 24 are sequentially formed by bending. A locking piece side slit 27 is provided from near the wire slot 26 of the wire insertion face part 23 to the end of the locking piece part 24 along the direction of inserting wire from the wire slot 26. The wire receiving face part 22 is provided with a wire receiving face side slit 29 from near the wire slot 26 of the wire insertion face part 23 along the direction of inserting wire from the wire slot 26.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a terminal device for connecting electric wires.

[0002]

2. Description of the Related Art Conventionally, a terminal device for connecting electric wires is mounted on a substrate such as an inverter lighting device for lighting equipment, and is used as a terminal block for connecting electric wires to the substrate. As shown in FIG. 7, a terminal fitting 1 and a case 2 for accommodating the terminal fitting 1 are provided, and the terminal fitting 1 is disconnected from the electric wire 3 inserted into the electric wire insertion hole 2a of the case 2 in an electrically connected state. The structure which stopped and locked is adopted.

The terminal fitting 1 has a side plate portion 1a, and an electric wire receiving surface portion 1b for receiving the electric wire 3 inserted into the electric wire insertion hole 2a from an edge portion of the side plate portion 1a, and an electric wire receiving surface portion in contact with the electric wire 3. 1b
Lock portion 1c, which is pressed against the case, a leg portion 1d protruding from the case 2 and attached to the board, and a locking claw 1e fixed to the case 2
And the like are bent, and are formed by cutting out and bending a single plate material into a developed state.

[0004]

However, when the board terminal block is used for an inverter lighting device, if the number of the terminal blocks is larger than the width of the board of the inverter lighting device, about eight of them are mounted side by side. With the narrowing of the width and the increase in the number of board terminal blocks arranged side by side, there is a demand for downsizing of the board terminal blocks.

As one method of reducing the size of the board terminal block, it is conceivable to reduce the dimension A from the wire receiving surface 1b of the terminal fitting 1 to the base end of the lock piece 1c.
If this dimension A is reduced, the lock piece 1c becomes short and sufficient spring properties cannot be obtained. When the electric wire 3 is inserted between the lock piece 1c and the wire receiving surface 1b, the lock piece The rigidity of the part 1c is so high that a large insertion force is required to elastically deform the lock piece 1c, and the lock piece 1c cannot be inserted smoothly, or the lock piece 1c is plastically deformed and the contact with the electric wire 3 is unstable. It is thought that it becomes.

The present invention has been made in view of the above point, and even if the size between the wire receiving surface and the bent portion of the lock piece is reduced, the wire can be inserted easily and the wire can be easily inserted. It is therefore an object of the present invention to provide a terminal device which can stabilize the contact state of the terminal device and can reduce the size between the wire receiving surface portion and the lock piece portion to reduce the size.

[0007]

According to a first aspect of the present invention, there is provided a terminal device having an electric wire receiving surface portion having an electric wire receiving surface on one surface, and an electric wire having an electric wire insertion hole bent from the electric wire receiving surface portion to the electric wire receiving surface side. An insertion surface portion, a locking piece bent from an edge of the electric wire insertion surface portion opposite to the electric wire receiving surface portion toward the electric wire receiving surface, and the chain from the vicinity of the electric wire insertion hole of the electric wire insertion surface portion. The lock has a lock-side slit provided along the wire insertion direction from the wire insertion hole over the tip of the lock piece.

Then, the wire receiving surface portion having the wire receiving surface on one side, the wire inserting surface portion having the wire insertion hole, and the locking piece are sequentially bent, and from the vicinity of the wire inserting hole of the wire inserting surface portion, the locking piece portion is formed. By providing a lock single-side slit along the wire insertion direction from the wire insertion hole over the tip, each part divided by the lock single-side slit of the lock piece portion with the wire inserted into the wire insertion hole is respectively Since the wire can be inserted between the wire receiving surface and the wire receiving surface while elastically deforming, even if the size of the wire inserting surface portion between the wire receiving surface portion and the locking piece portion is reduced, the rigidity of the locking piece portion is reduced. Is reduced, and the wire insertability is good,
The state of contact with the electric wire is stabilized without plastic deformation of the lock piece. Therefore, it is possible to reduce the size of the wire insertion surface portion between the wire receiving surface portion and the lock piece portion to reduce the size.

According to a second aspect of the present invention, there is provided a terminal device having an electric wire receiving surface portion having an electric wire receiving surface on one surface, an electric wire insertion surface portion bent from the electric wire receiving surface portion to the electric wire receiving surface side, and having an electric wire insertion hole. A lock piece bent toward the wire receiving surface from the edge opposite to the wire receiving surface portion of the insertion surface portion, and the wire receiving surface portion, from near the wire insertion hole of the wire insertion surface portion, And an electric wire receiving surface side slit provided along the electric wire insertion direction from the electric wire insertion hole.

Then, the wire receiving surface portion having the wire receiving surface on one side, the wire inserting surface portion having the wire inserting hole, and the locking piece are sequentially bent, and the wire receiving surface portion has the vicinity of the wire inserting hole of the wire inserting surface portion. By providing the wire receiving surface side slit along the wire insertion direction from the wire insertion hole, each part divided by the wire receiving surface side slit of the wire receiving surface portion of the wire inserted into the wire insertion hole is respectively Since the wire escapes from the lock piece while elastically deforming and allows the wire to be inserted between it and the lock piece, the size of the wire insertion surface between the wire receiving surface and the lock piece is reduced. Even so, the rigidity of the electric wire receiving surface is reduced, the insertability of the electric wire is good, and the contact state with the electric wire is stabilized without the lock piece being plastically deformed. Therefore, it is possible to reduce the size of the wire insertion surface portion between the wire receiving surface portion and the lock piece portion to reduce the size.

According to a third aspect of the present invention, there is provided a terminal device having an electric wire receiving surface portion having an electric wire receiving surface on one surface, an electric wire insertion surface portion bent from the electric wire receiving surface portion to the electric wire receiving surface side, and having an electric wire insertion hole. A lock piece bent from the edge of the insertion surface opposite to the wire receiving surface toward the wire receiving surface, and from the vicinity of the wire insertion hole of the wire insertion surface to the tip of the lock piece. A lock single-side slit provided along the wire insertion direction from the wire insertion hole, the wire receiving surface portion, from near the wire insertion hole of the wire insertion surface portion, along the wire insertion direction from the wire insertion hole. And a slit provided on the wire receiving surface side.

Then, the wire receiving surface portion having the wire receiving surface on one side, the wire inserting surface portion having the wire insertion hole, and the locking piece are sequentially bent so that the vicinity of the wire inserting hole of the wire inserting surface portion is changed to the locking piece portion. Along the tip, a lock single-sided slit is provided along the wire insertion direction from the wire insertion hole, and the wire receiving surface portion is located near the wire insertion hole of the wire insertion surface portion in the wire insertion direction from the wire insertion hole. By providing the wire receiving surface side slit along, each part divided by the lock piece side slit of the lock piece portion with the wire inserted into the wire insertion hole is inserted into the wire insertion hole while being elastically deformed respectively. Each part divided by the slit on the wire receiving surface side of the wire receiving surface part escapes to the lock piece while elastically deforming, and inserts the wire between the wire receiving surface and the lock piece. Allowed, wire receiving surface Even if the size of the wire insertion surface portion between the locking piece portion is reduced, the rigidity of the wire receiving surface portion and the locking piece portion is reduced, so that the insertability of the wire is good, and the locking piece portion is not plastically deformed. The contact state with the electric wire is stabilized. Therefore, it is possible to reduce the size of the wire insertion surface portion between the wire receiving surface portion and the lock piece portion to reduce the size.

According to a fourth aspect of the present invention, there is provided the terminal device according to any one of the first to third aspects, further comprising a leg protruding from an edge of the wire receiving surface opposite to the wire insertion surface. Things.

The legs are projected from the edge of the electric wire receiving surface opposite to the electric wire insertion surface so that the electric wires can be connected and fixed to a substrate or the like.

According to a fifth aspect of the present invention, in the terminal device of the fourth aspect, the leg portion is formed by being cut and raised from the electric wire receiving surface portion.

[0016] By forming the leg portion by cutting and raising it from the electric wire receiving surface portion, material removal when cutting out from the terminal material is improved.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 to FIG. 5 show an embodiment. In this embodiment, for example, a terminal for a board which is attached to a board such as an inverter lighting device for a lighting fixture and connects an electric wire to the board. Show a table.

The board terminal block is a pair (two poles) of terminal fittings.
11, a case 12 for storing the terminal fitting 11 and a cover 13
, And are formed in a two-pole integral shape.

The terminal fitting 11 is formed of a thin plate having conductivity and spring properties as a terminal material, and has a wire receiving surface portion 22 having a wire receiving surface 21 on one side.
An electric wire insertion surface portion 23 is bent substantially perpendicularly to an electric wire receiving surface 21 side from an edge portion on one end side of the electric wire insertion portion 22. Wire receiving surface 21
The locking piece 24 is bent in a slanted shape toward the other end, and a pair of legs 25 extend from both sides of the edge of the other end of the wire receiving surface 22 (the side opposite to the wire insertion surface 23). I have.

An electric wire insertion hole 26 is formed in the center of the electric wire insertion surface portion 23 so as to face the electric wire receiving surface 21 and into which an electric wire (not shown) is inserted.

A lock-side slit 27 is formed from the vicinity of the wire insertion hole 26 of the wire insertion surface 23 to the tip of the lock piece 24 along the wire insertion direction from the wire insertion hole 26. The lock piece 24 is divided into a pair of divided pieces 24a by the lock-side slit 27. In addition, between the wire insertion hole 26 and the end of the lock one-side slit 27, there remains a connecting part 28 that is not divided without the lock one-side slit 27 entering.

An electric wire receiving surface side slit 29 is formed in the electric wire receiving surface portion 22 from the vicinity of the electric wire insertion hole 26 of the electric wire insertion surface portion 23 along the electric wire insertion direction from the electric wire insertion hole 26. The wire receiving surface portion 22 is divided into a pair of split pieces 22a by the wire receiving surface side slit 29. The wire insertion hole
The wire receiving surface side slit 29 does not enter between 26 and one end of the wire receiving surface side slit 29, and between the other end of the wire receiving surface side slit 29 and the other end edge of the wire receiving surface portion 22. The connecting portions 30 and 31 which are not divided into are left.

The case 12 is formed in a box shape from, for example, a synthetic resin material having an insulating property, and includes a pair of terminal storage portions 41 in which a pair of terminal fittings 11 are stored.
And are formed in parallel. Terminal storage section
41, the width in the terminal juxtaposition direction in which the pair of terminal housing portions 41 are arranged is formed narrower than the width in the direction orthogonal to the terminal juxtaposition direction,
The cross-sectional shape of the case 12 is formed in a substantially square shape.

Each of the terminal storage portions 41 has a holding surface 43 positioned in contact with the wire insertion surface portion 23 of the terminal fitting 11, a holding surface 44 held in contact with the wire receiving surface portion 22 of the terminal fitting 11, and both sides of the terminal fitting 11. A holding surface 45 that contacts and holds the edge and a holding surface 46 that contacts and holds the bent portion of the terminal fitting 11 are formed. Holding surface 43
Is formed with an electric wire insertion hole 47 for inserting an electric wire (not shown) facing the holding surface 44. In the center of the holding surface 44, a concave portion 48 corresponding to the position of the wire receiving surface side slit 29 of the terminal fitting 11 is provided.
Are formed along the wire insertion direction.

An opening 49 is formed in the lower surface of the case 12 to insert each terminal fitting 11 into each terminal storage portion 41. The cover 13 is attached to both edges of the opening 49 in the direction in which the terminals are arranged. A hole 50 is formed.

The cover 13 is formed in a rectangular shape from, for example, a synthetic resin material having an insulating property and is detachably attached to the opening 49 of the case 12. The width is almost the same as the width, and the width in the short direction is
49 is smaller than the width of 49, and the leg 25 of the terminal fitting 11 projects through the opening on both sides in the short direction. At both ends in the longitudinal direction of the cover 13, locking claws 51 to be engaged with the mounting holes 50 are formed so as to protrude. Terminal storage section 41 of cover 13
A holding projection 52 for holding the wire receiving surface portion 22 of the terminal fitting 11 between the holding surface 44 and the holding surface 44 is formed in a protruding manner.

When assembling the board terminal block, a pair of each of the terminal fittings 11 is arranged such that the wire insertion surface 23 of the terminal fitting 11 is at the top and the wire receiving surface 22 is along the holding surface 44 having the concave portion 48. The terminal fitting 11 is inserted into each of the pair of terminal storage sections 41 of the case 12 through the opening 49, and the cover 13 is
Attach to 12 openings 49.

In this assembled state, the terminal fitting 11 is
And the cover 13 is positioned and held at a predetermined position in the terminal accommodating portion 41, the wire insertion hole 26 of the terminal fitting 11 communicates with the wire insertion hole 47 of the case 12, and the leg 25 passes through both side openings of the cover 13. Projected from case 12.

When the board terminal block is mounted on the board, the legs 25 projecting from the case 12 are passed through the board and soldered to the circuit, electrically connected and mechanically fixed.

When an electric wire is connected to the board terminal block, the end of the electric wire, whose sheath is cut off to expose the core wire, is inserted into the electric wire insertion hole 26 of the terminal fitting 11 through the electric wire insertion hole 47 of the case 12. . The inserted wire contacts the lock piece 24 and is inserted between the wire receiving surface 21 and the lock piece 24 while elastically deforming the lock piece 24.

At this time, the wire insertion hole 26 in the wire insertion surface 23
A lock piece side slit 27 formed from the vicinity to the tip of the lock piece part 24 allows the lock piece 24 to be divided into a pair of divided pieces 24.
a and the rigidity is reduced.
The edge side near the lock single-side slit 27 is pressed by the electric wire and greatly elastically deformed, but the elastic deformation on the opposite edge side to the lock single-side slit 27 is small, and the entire divided piece portion 24a is uniformly uniform. Each divided piece portion 24a is elastically deformed so as to be twisted by a small force as compared with the case where the elastically deformed portion is largely deformed. for that reason,
The electric wire can be easily inserted between the electric wire receiving surface 21 and the lock piece 24.

Further, the wire receiving surface portion 22 is formed by a wire receiving surface side slit 29 formed in the wire receiving surface portion 22 so that the wire receiving surface portion 22 can be divided into a pair of divided pieces.
22a to reduce the rigidity.
When the edge side of the a near the wire receiving surface side slit 29 is pressed by the wire, it is elastically deformed to the side opposite to the wire receiving surface 21 so as to escape from the lock piece 24. Therefore, the electric wire can be easily inserted between the electric wire receiving surface 21 and the lock piece 24.

Accordingly, the wire receiving surface portion 22 having the wire receiving surface side slit 29 and the lock piece portion having the lock piece side slit 27 are provided.
By the synergistic action of the two, the electric wire can be easily inserted between the electric wire receiving surface 21 and the lock piece 24.

Then, the inserted wire is pressed into contact with the lock piece 24 while biting, so that the wire and the terminal fitting 11 are electrically connected, and the wire is prevented from coming off by the lock piece 24. Locked.

As described above, the electric wire receiving surface portion 22 having the electric wire receiving surface 21, the electric wire insertion surface portion 23 having the electric wire insertion hole 26, and the lock piece portion 24 are sequentially bent to form the electric wire insertion hole 26 of the electric wire insertion surface portion 23.
From the vicinity to the tip of the lock piece 24, the wire insertion hole
A lock-side one-side slit 27 is provided along the wire insertion direction from 26, and the wire receiving surface portion 22 extends from the vicinity of the wire insertion hole 26 of the wire insertion surface portion 23 along the wire insertion direction from the wire insertion hole 26. By providing the wire receiving surface side slit 29
While each of the divided pieces 24a divided by the lock single-side slit 27 of the lock piece 24 is elastically deformed by the electric wire inserted into the electric wire insertion hole 26, and the electric wire inserted into the electric wire insertion hole 26 Each of the divided piece portions 22a divided by the wire receiving surface side slit 29 of the wire receiving surface portion 22 escapes to the lock piece portion 24 while being elastically deformed, and the wire receiving surface 21 and the lock piece portion 24 Since the insertion of the wire between the wires is permitted, the rigidity of the wire receiving surface 22 and the locking piece 24 is reduced even if the size of the wire inserting face 23 between the wire receiving face 22 and the locking piece 24 is reduced. As a result, the insertability of the wire is reduced, and the lock piece 24 can be stably contacted with the wire without plastic deformation. Therefore,
The size of the electric wire insertion surface portion 23 between the electric wire receiving surface portion 22 and the lock piece portion 24 can be reduced to reduce the size.

When the slits 27 and 29 are inserted up to the wire insertion hole 26, the gap also occurs at the wire insertion hole 26, so that the wire cannot be inserted into the wire insertion hole 26 or the inserted wire cannot be inserted into the slit. Although it is easy to come off from 27 and 29, the connecting parts 28 and 30 do not
By leaving the wire, the wire can be reliably inserted into the wire insertion hole 26, and the wire can be prevented from coming off.

The terminal fitting 11 has a simple structure which can be bent twice in the same direction, and the slits 27 and 29 can be formed simultaneously when cutting from the terminal material.
Can be manufactured easily and inexpensively.

FIG. 6 shows another embodiment.
By cutting and raising 25 from both sides of the wire receiving surface portion 22, the terminal fitting 11 has a substantially rectangular shape in a developed state of the terminal fitting 11 and there is no portion to be protruded, when cutting out from one terminal material,
There is little wasted part that is not used, and material can be easily removed. For example, an inexpensive ribbon material can be used.

[0040]

According to the terminal device of the present invention, the electric wire receiving surface portion having the electric wire receiving surface on one side, the electric wire insertion surface portion having the electric wire insertion hole, and the locking piece portion are sequentially bent to form the electric wire insertion surface portion. By providing a slit on one side of the lock from the vicinity of the wire insertion hole to the tip of the lock piece along the wire insertion direction from the wire insertion hole, the wire is inserted into the wire insertion hole to lock the lock piece. Since each part divided by the lock side slit is elastically deformed while allowing the insertion of the electric wire between the electric wire receiving surface, the dimension of the electric wire insertion surface between the electric wire receiving surface and the lock piece is reduced. Even if the size is reduced, the rigidity of the lock piece is reduced, so that the wire can be inserted easily, and the contact state with the wire can be stabilized without plastic deformation of the lock piece. Therefore, the size of the electric wire insertion surface between the electric wire receiving surface and the locking piece can be reduced and the size can be reduced.

According to the terminal device of the second aspect, the wire receiving surface portion having the wire receiving surface on one side, the wire inserting surface portion having the wire insertion hole, and the locking piece portion are sequentially bent, and the wire receiving surface portion has By providing a slit on the wire receiving surface side near the wire insertion hole of the wire insertion surface along the wire insertion direction from the wire insertion hole, the wire inserted into the wire insertion hole can be inserted into the wire receiving surface on the wire receiving surface side. Each part divided by the slit escapes to the lock piece while elastically deforming, and allows insertion of the electric wire between the lock piece and the wire. Even if the size of the wire insertion surface portion is reduced, the rigidity of the wire receiving surface portion is reduced, the wire insertion property is good, and the contact state with the wire can be stabilized without the lock piece portion being plastically deformed. Therefore, the size of the electric wire insertion surface between the electric wire receiving surface and the locking piece can be reduced and the size can be reduced.

According to the terminal device of the third aspect, the wire receiving surface portion having the wire receiving surface on one surface, the wire inserting surface portion having the wire insertion hole, and the locking piece portion are sequentially bent to form the wire on the wire inserting surface portion. From the vicinity of the insertion hole to the tip of the lock piece, a lock single-side slit is provided along the wire insertion direction from the wire insertion hole, and the wire receiving surface portion is formed from the vicinity of the wire insertion hole in the wire insertion surface portion. By providing the wire receiving surface side slit along the wire insertion direction from the wire insertion hole, each part divided by the lock one side slit of the lock piece part by the wire inserted into the wire insertion hole is elastically deformed. While the wire is inserted into the wire insertion hole, each portion divided by the wire receiving surface side slit of the wire receiving surface portion escapes to the lock piece while elastically deforming, and the wire receiving surface and the lock piece Insert the wire between Therefore, even if the size of the wire insertion surface between the wire receiving surface and the locking piece is reduced, the rigidity of the wire receiving surface and the locking piece is reduced, so that the wire can be inserted easily. The contact state with the electric wire can be stabilized without the one part being plastically deformed. Therefore, the size of the electric wire insertion surface between the electric wire receiving surface and the locking piece can be reduced and the size can be reduced.

According to the terminal device of the fourth aspect, in addition to the effects of the terminal device of any one of the first to third aspects, the legs are projected from the edge of the wire receiving surface opposite to the wire insertion surface. Therefore, it can be connected and fixed to a substrate or the like.

According to the terminal device of the fifth aspect, in addition to the effect of the terminal device of the fourth aspect, since the legs are cut and raised from the wire receiving surface portion, material removal when cutting out from the terminal material is well performed. it can.

[Brief description of the drawings]

FIG. 1 is a perspective view of a terminal fitting showing one embodiment of a terminal device of the present invention.

FIG. 2 is a sectional view showing an assembled state of the terminal block.

FIG. 3 is a sectional view of the terminal block in an exploded state.

FIG. 4 is a bottom view of the same case.

FIG. 5 is a bottom view of the cover.

FIG. 6 is a perspective view of a terminal fitting showing another embodiment of the terminal device of the present invention.

FIG. 7 is a sectional view of a conventional terminal block.

[Explanation of symbols]

 21 Wire receiving surface 22 Wire receiving surface 23 Wire insertion surface 24 Lock piece 25 Leg 26 Wire insertion hole 27 Lock one side slit 29 Wire receiving side slit

 ──────────────────────────────────────────────────続 き Continued on front page (72) Inventor Takeshi Nagata 6-78, Minamicho, Mishima-shi, Shizuoka Prefecture Inside Tec Mishima Plant (72) Inventor Norimasa Suzuki 6-78, Minami-cho, Mishima-shi, Shizuoka Prefecture Ku Mishima Office F term (reference) 5E086 CC50 DD03 DD12 DD33 JJ11 LL14 LL16 LL17

Claims (5)

[Claims] An electric wire receiving surface having an electric wire receiving surface on one surface;
An electric wire insertion surface portion bent from the electric wire receiving surface portion to the electric wire receiving surface side and having an electric wire insertion hole, and bent from an edge of the electric wire insertion surface portion opposite to the electric wire receiving surface portion toward the electric wire receiving surface. And a locking piece side slit provided from the vicinity of the wire insertion hole of the wire insertion surface to the tip of the locking piece along the wire insertion direction from the wire insertion hole. A terminal device characterized in that: 2. An electric wire receiving surface portion having an electric wire receiving surface on one surface;
An electric wire insertion surface portion bent from the electric wire receiving surface portion to the electric wire receiving surface side and having an electric wire insertion hole, and bent from an edge of the electric wire insertion surface portion opposite to the electric wire receiving surface portion toward the electric wire receiving surface. Locking piece, and the wire receiving surface portion, near the wire insertion hole of the wire insertion surface portion, provided with a wire receiving surface side slit provided along the wire insertion direction from the wire insertion hole A terminal device. 3. An electric wire receiving surface portion having an electric wire receiving surface on one surface, an electric wire insertion surface portion bent from the electric wire receiving surface portion to an electric wire receiving surface side, and having an electric wire insertion hole, and the electric wire receiving surface portion of the electric wire insertion surface portion. A lock piece bent from the opposite edge to the wire receiving surface, and from the vicinity of the wire insertion hole of the wire insertion surface to the tip of the lock piece, from the wire insertion hole. A lock single-side slit provided along the wire insertion direction; and a wire receiving surface provided along the wire insertion direction from the wire insertion hole in the wire receiving surface portion from near the wire insertion hole of the wire insertion surface portion. A terminal device comprising: a side slit. 4. The terminal device according to claim 1, further comprising a leg protruding from an edge of the wire receiving surface opposite to the wire insertion surface. 5. The terminal device according to claim 4, wherein the leg portion is formed by cutting and raising the wire receiving surface portion.