JPH0935780A - Terminal for connection - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal for connection which can perform the connection between the required electric path of a printed board and a cable easily and besides without breaking a conductive layer, etc., by selecting a terminal for connection of specified constitution. SOLUTION: A current application metal fitting 2 is composed of a connection seat 3 where a screw hole 4 is made, one to plural peripheral boards 6a and 6b made continuously from this margin, an engaging projection 7 to be electrically connected to the required electric path on a printed board p, being fitted in the through hole h of the printed board p, coil mounting space S made by the connection seat 3 and the peripheral boards 6a and 6b, and a coil lock 10 to define the bottom of this space S. Furthermore, this possess a coil 25 installed in this space S and with its bottom supported on the coil lock 10, a support 14 to support the terminal screw 20 screwed in the screw hole 4, a pressure receiving part 15 positioned within the space S and pressure-contacts with the top of the coil 25 and given the elastic force of the coil 25, and a movable washer 13 supported ascendably and descendably by the current application metal fitting 2. Such constitution of terminal for connection is selected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection terminal mounted on a printed board.

[0002]

2. Description of the Related Art As a means for connecting an electric wire to a required electric circuit on a printed circuit board p, a connection terminal a shown in FIG. 12 is used. This terminal a
Has a cross-section in the shape of a gate, and an upper portion thereof serves as a connection seat portion b for connecting the electric wire L, and a screw hole c is formed in the connection seat portion b, and the through holes of the printed circuit board p are formed at the lower ends of the peripheral plate portions d. The electric wire L is formed by inserting fitting projections e, which are fitted into h and electrically connected to a required electric circuit on the printed circuit board p.
Place the crimp terminal E fixed to the end of the on the connection seat b,
By screwing the terminal screw g into the screw hole c from above,
The electric wire L is electrically connected to a required electric circuit on the printed circuit board via the terminal a.

[0003]

By the way, in such a conventional terminal a, when connecting the electric wire L, the lower end of the terminal screw g is aligned with the screw hole c,
It is necessary to screw it in, which is troublesome, and if it is loosened excessively with an electric tool or the like, the terminal screw falls off the terminal and is lost in some cases, resulting in poor workability. An object of the present invention is to provide a terminal for connection that enables easy connection of the electric wire L.

[0004]

SUMMARY OF THE INVENTION The present invention is directed to a connection seat portion having a screw hole formed therein, and one to a plurality of peripheral plate portions formed from the peripheral edge of the connection seat portion in a manner orthogonal to the connection seat portion. A fitting protrusion that fits into a through hole of the printed circuit board and electrically connects with a required electric path on the printed circuit board; a coil mounting space formed by being surrounded by the connection seat part and the peripheral plate part; A current-carrying metal fitting including a coil locking portion that defines a lower end of the coil mounting space, a coil that is mounted in the coil mounting space and has a support edge supported by the coil locking portion, and a connecting seat of the connection seat portion. A support portion that supports a terminal screw that is screwed into the screw hole, is formed below the support portion, is located in the coil mounting space, and is pressed against the upper end of the coil to apply elastic force of the coil. A wire having a pressure receiving portion and a movable washer supported by the current-carrying metal so as to be able to move up and down. It is a terminal.

In such a structure, the movable washer can be moved up and down by being urged upward by the coil mounted in the coil mounting space of the current-carrying metal fitting. Therefore, the crimp terminal E connected to the end of the electric wire L is placed on the connection washer of the current-carrying fitting with its insertion hole aligned with the screw hole, and the movable washer is lowered against the biasing force of the coil. By screwing the terminal screw into the screw hole and tightening it, the crimp terminal E is sandwiched between the support portion of the movable washer and the connection seat portion, and the electric wire L is mechanically and electrically connected to the current-carrying metal fitting. The Rukoto. Also,
In order to remove the crimp terminal E, the terminal screw is rotated in the reverse direction, and when the terminal screw is detached, the movable washer is brought to the floating position by the urging force of the coil, so that the crimp terminal E can be easily disconnected. At this time, the terminal screw is supported immediately above the screw hole, and is prepared for the next screwing operation.

By the way, as a means for holding the coil,
It is conceivable to remove the coil locking part and directly hold the lower surface of the coil with the printed circuit board, but in this case, stress is always applied to the printed circuit board,
It is easy to damage the conductive film on the printed board or damage the printed board itself. Further, in the current-carrying metal fitting, the fitting protrusion is fitted into the through hole of the printed circuit board, and soldering is performed from the lower surface side of the printed circuit board to fix and electrically connect to the printed circuit board. When the lower end of the coil is pressed against the printed circuit board, the urging force causes constant stress to act on the solder, causing damage to the solder, causing the metal fittings to separate from the printed circuit board, or causing improper fixing. Reminded. However, in the present invention, since the supporting edge of the coil is not directly held by the printed circuit board but is held by the coil locking portion, each of the above problems can be solved.

Here, the coil engaging portion of the current-carrying metal fitting is
It can be configured by a coil receiving piece that is bent from the supporting edge of one or both of the peripheral plate portions and projects toward the coil mounting gap side.

Further, window holes are formed in the left and right peripheral plate portions along the coil mounting space, and both side edges of the coil in the coil mounting space are fitted in the window holes so that the lower edges of the window holes are fitted. By supporting the lower end of the coil, the supporting edge may be used as the coil locking portion.

Further, linking protrusions are formed on both side edges of the lower plate of the movable washer, and vertically long window holes are formed in the left and right peripheral plate portions, and the linking protrusions are formed in the window holes. By inserting the movable washer to hold the movable washer,
The movable washer can be held against external stress or vibration without being separated. In such a configuration, since the metal plate surface is not used as the coil locking portion,
It requires less metal material.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A connection terminal 1 according to a first embodiment of the present invention will be described with reference to FIGS. Here, the current-carrying metal fitting 2 is formed by bending a metal plate. That is, from the both side edges of the connection seat portion 3, the peripheral side plates 6a,
6b is folded, and further, the coil receiving piece 10 is folded inward from one of the peripheral side plates 6a so as to be parallel to the connecting seat portion 3, thereby forming a substantially rectangular parallelepiped shape, and the connecting seat portion 3, the coil 3 A coil mounting space S is formed inside by the space surrounded by the receiving piece 10 and the peripheral side plates 6a and 6b.

A screw hole 4 is formed in the connection seat portion 3,
It communicates with the coil mounting space S. A notch 5 for holding a movable washer 13, which will be described later, is provided at the front edge of the connection seat portion 3.
Are formed. Fitting protrusions 7, 7 are formed on both sides of the lower ends of the peripheral side plates 6a, 6b so as to be fitted into the through holes h of the printed circuit board p and electrically connected to a required electric circuit on the printed circuit board p. Rectangular window holes 8, 8 elongated in the vertical direction are formed on the main surfaces of the peripheral side plates 6a, 6b. Further, the holding projections 1 are provided on the front and rear edges of the coil receiving piece 10.
1, 11 are bent upwards.

The movable washer 13 has a U-shape formed by bending a metal plate. That is, the upper portion of the connecting portion 16 is bent at a right angle to form the supporting portion 14, and the lower portion of the connecting portion 16 is also bent at a right angle so as to be parallel to the supporting portion 14 to form the pressure receiving portion 15. The support portion 14 and the pressure receiving portion 15 are opposed to each other.

The support portion 14 has a locking hole 17. Further, the width of the pressure receiving portion 15 and the connecting portion 16 is set within the inner space of the peripheral side plates 6a, 6b, and the pressure receiving portion 15
Locking edge 1 fitted in the window holes 8 from both side edges of the
8 and 18 are formed. Furthermore, the terminal screw 20 is supported in the locking hole 17. As shown in FIG. 2, the terminal screw 20 has a tooth portion 21 at the neck portion thereof, and a screw hole is formed on the inner peripheral surface of the locking hole 17. As a result, when the terminal screw 20 is screwed into the locking hole 17 from above and is advanced, the terminal screw 20 is emptied by the action of the missing tooth 21 with the missing tooth 21 positioned in the locking hole 17. Since the terminal screw 20 rotates, the terminal screw 20 does not separate from the locking hole 17 depending on the rotation of the terminal screw 20.

With such a structure, the movable washer 13
As shown in FIG. 3, the pressure receiving portion 15 is inserted into the coil mounting space S from the front portion between the peripheral side plates 6a and 6b in a state of being recumbent by 90 degrees, and further raised, and the locking edge 18, 18 is fitted in the window holes 8 and 8 and the connecting portion 16 is positioned in the cut 5. Then, the movable washer 13 is pulled upward to a floating position as shown in FIG. 4, and the coil 25 is inserted between the pressure receiving portion 15 and the coil receiving piece 10 in a compressed state. Thus, the current-carrying metal fitting 2, the support portion 14 and the coil 25 are assembled, and the connection terminal 1 is completed. In this state, the movable washer 13 is retained by inserting the locking edges 18, 18 into the window holes 8, 8 and pressing the upper edge of the coil 25 against the lower surface of the pressure receiving portion 15 to apply an upward biasing force. Is given
In a state where the terminal screw 20 is not screwed into the screw hole 4,
It is held in the floating position. The coil 25 is held between the holding projections 11, 11 formed in the front and rear of the coil receiving piece 10.

In this structure, the fitting protrusions 7, 7 are fitted into the through holes h of the printed circuit board p from above,
Further, solder t is joined to the lower surface of the printed board p, and the connection terminal 1 is fixed on the printed board p. The fitting protrusions 7, 7 are electrically connected to the conductive paths formed on either the front surface or the back surface of the printed circuit board p. The crimp terminal E, which is fixed to the tip of the electric wire L and has an annular shape or a fork shape, is made to have its hole aligned with the screw hole 4, and then the movable washer 1
3 is lowered against the coil 25, and the terminal screw 20 is rotated by using a screwdriver or an electric tool.
0 is screwed into the screw hole 4 to clamp the crimp terminal E between the connection seat portion 3 and the support portion 14. At this time, the terminal screw 20
Due to the action of the toothless portion 21, the movable washer 13 idles.

Thus, the electrical fitting 2 and the electric wire L can be easily connected. In addition, disconnection of the electric wire L is
It is easily performed by rotating the terminal screw 20 in the opposite direction, and the movable washer 13 returns to the floating state. At this time, the terminal screw 20 is maintained in the state of being held by the support portion 14, which facilitates the handling of the terminal screw 20.

In this structure, the coil 25 is
Unlike the case where the lower surface thereof is supported by the terminal screw 20 and therefore the printed circuit board p is directly pressed against the printed circuit board p, the printed circuit board p or the solder t is not constantly applied with pressure, the printed circuit board p itself is damaged, and the printed circuit board p itself is damaged. The conductive layer on p is not damaged, and further, the holding strength of the connection terminal 1 to the printed board p due to the damage of the solder t is not reduced or is not detached.

In addition, depending on the mounting environment, there is a case where force or vibration is applied to the connection terminal 1 from the side, but the movable washer 13 has a locking edge 18,
18 is fitted into the window holes 8 and 8 to prevent its tilting, and the supporting edge of the coil 25 is held between the holding projections 11 and 11 of the coil receiving piece 10. There is no disassembly, and the assembled state can be maintained stably.

5 to 11 show a terminal 31 for connection according to the second embodiment of the present invention.

Here, the current-carrying metal fitting 32 is formed in a U-shape by bending the peripheral side plates 36a and 36b at right angles from both side edges of the connecting seat portion 33 by bending a metal plate. The space surrounded by 33, 36a and 36b forms the coil mounting space S.

A screw hole 34 is formed in the connecting seat 33 and communicates with the coil mounting space S. This connection seat 3
A notch 35 for holding a movable washer 43 described later is formed at the front edge of the. Further, the peripheral side plates 36a, 36
Fitting protrusions 37, 37 are formed on both sides of the lower end of b so as to be fitted into the through holes h of the printed circuit board p and electrically connect to the required electric circuit on the printed circuit board p.
Rectangular window holes 38, 38 that are long in the vertical direction are formed in a and 36b. Further, the lower corner edges of the window holes 38, 38 project inward, and the support projections 39, 39 having inclined edges are formed on the upper edges thereof.
Are supported between the inner edges of the support protrusions 39, 39. Thus, at the lower edges of the windows 38, 38, a coil locking portion that defines the lower end of the coil mounting space S is formed.

In the structure of the current-carrying metal fitting 32, the window holes 38, 38 are formed by punching, and the metal plate is bent twice at a right angle. Compared to the first embodiment, the bending process only needs to be performed twice.
Moreover, there are advantages that the amount of metal material is small, the cost is low, and the weight is light.

The movable washer 43 is formed by bending a metal plate and bending the upper portion of the connecting portion 46 at a right angle to form a supporting portion 44. The lower portion of the connecting portion 46 is parallel to the supporting portion 44. The pressure receiving portion 45 is formed by bending at a right angle to form a U shape. The support portion 44 has a locking hole 47.
Further, locking edges 48, 48 that are fitted into the window holes 38, 38 project from both side edges of the pressure receiving portion 45. A terminal screw 50 is rotatably supported in the locking hole 47.

With this structure, the movable washer 43 is used.
Is in a recumbent state as shown in FIG.
Is inserted into the coil mounting space S, and by raising this, the locking edges 48, 48 are fitted and mounted in the window holes 38, 38, sandwiched between the peripheral side plates 36a, 36b, and held so that they can be moved up and down. To be done.

Then, as shown in FIG. 10, the movable washer 43 is pulled upward to a floating position, and the coil 55 is inserted into the coil mounting space S in an elastically contracted state. By this insertion, both side edges of the coil 55 are fitted in the locking edges 48, 48, and the lower edges thereof are supported by the support projections 39, 39, and thus the coil 55 is held so as to be expandable and contractible. . The upper edge of the coil 55 is pressed against the lower surface of the pressure receiving portion 45, the movable washer 43 is given an upward biasing force, and the terminal screw 50 is not screwed into the screw hole 34, as shown in FIGS. So that it is held in the floating position.

In this structure, the connection terminal 3
1 is similar to the first embodiment, the fitting protrusions 37, 37 are fitted into the through holes h of the printed circuit board p from above, and solder t is joined from the lower surface of the printed circuit board p to form the connection terminal 31. Is fixed on the printed circuit board p.

The other work of connecting and disconnecting the electric wire L is the same as that of the first embodiment, and the description thereof will be omitted. Also in this configuration, the coil 55 has its lower edge supported by the support projections 39, 3
Since it is held by 9 and does not come into direct pressure contact with the printed circuit board p, no constant pressure is applied to the printed circuit board p or the solder t, the printed circuit board p itself is damaged, the conductive layer on the printed circuit board p is damaged, and Does not reduce the holding strength of the connection terminal 1 to the printed circuit board p or the detachment thereof due to the damage of the solder t.

In the mounting environment, the movable washer 43 similarly has the locking edges 48, 48 and the window holes 38, 3.
8 and is prevented from tilting, and the coil 55
Is held from both sides by the window holes 38, 38. Therefore, the assembled state can be stably maintained without being decomposed by external pressure or the like.

FIG. 11 shows a connection terminal 31a which is a modification of the second embodiment. In this configuration, fitting protrusions 37a, 37a are formed on one side edge of the peripheral side plates 36a, 36b of the current-carrying metal fitting 32a, and the connection terminal 31a is laterally arranged on the printed circuit board p as shown in FIG. Then, by fitting the fitting protrusions 37a, 37a into the through holes h, they are fixed on the printed board p. This configuration is suitable for the case where the turning operation of the terminal screw 50 is performed from the end edge side of the printed board.

[0030]

As described above, according to the present invention, the terminal screws 2 are attached to the current-carrying metal fittings 2, 32 fixed on the printed circuit board p.
Movable washers 13 and 43 supporting 0 and 50 are mounted, and the movable washers 13 and 43 are biased upward by the coils 25 and 55 mounted in the coil mounting space S in the metal fittings 2 and 32. The crimp terminal E of the electric wire L was placed on the connection washers 3 and 33 provided on the current-carrying metal fittings 2 and 32, and the movable washers 13 and 43 were lowered against the coils 25 and 55 and supported by the movable washers 13 and 43. By screwing the terminal screws 20 and 50 into the screw holes 4 and 34 formed in the connection seat portions 3 and 33 of the current-carrying metal fittings 2 and 32, the crimp terminal E is connected to the connection seat portions 3 and 33 and the support portions 14 and 44. It is sandwiched between and the electric metal fittings 2, 32 and the electric wire L
The connection with the terminal screws 20, 5
In the screwing operation of 0, it is not necessary to screw the terminal screws 20, 50 after aligning the lower ends of the terminal screws 20, 50 with the screw holes 4, 34, and the terminal screws 20, 50 do not fall off during the operation. The electric wire L can be easily attached and detached.
Further, since the coils 25 and 55 are held by the coil receiving portion, the biasing force of the coils 25 and 55 does not act directly on the printed board p, and the hands t are damaged, the energization fittings 2 and 32 are detached, or The printed circuit board p itself and the conductive layer formed on the printed circuit board p are not damaged, and the electrical connection with the printed circuit board p can be stably ensured, which is an excellent effect.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a connection terminal 1 according to a first embodiment.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view showing an assembling process of the metal fitting 2.

FIG. 4 is a perspective view showing an assembling process of the coil 25.

FIG. 5 is a perspective view of a connection terminal 31 according to a second embodiment.

FIG. 6 is a vertical sectional side view of a connection terminal 31.

FIG. 7 is a sectional view taken along the line BB of FIG. 6;

8 is a sectional view taken along line CC of FIG.

FIG. 9 is a perspective view showing an assembling process of the current-carrying metal fitting 32.

10 is a perspective view showing an assembling process of the coil 55. FIG.

FIG. 11 is a perspective view of a connection terminal 61 according to a third embodiment.

FIG. 12 is a vertical cross-sectional side view of a connection terminal a according to a conventional configuration.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connection terminal 2 Conductive metal fitting 3 Connection seat part 4 Screw hole 6a, 6b Circular side plate 7 Fitting protrusion 8 Window hole 10 Coil receiving piece 13 Movable washer 14 Supporting part 15 Pressure receiving part 17 Locking hole 20 Terminal screw 25 Coil 31, 31a Connection terminal 32 Conductive metal fitting 33 Connection seat part 34 Screw hole 36a, 36b Peripheral side plate 37, 37a Fitting protrusion 38 Window hole 39 Supporting protrusion 43 Movable washer 44 Supporting part 45 Pressure receiving part 48 Locking edge 50 Terminal screw 55 Coil S coil mounting space

Claims (4)

[Claims] 1. A connection seat part having a screw hole, one to a plurality of peripheral plate parts connected from the peripheral edge of the connection seat part in a direction orthogonal to the connection seat part, and a through hole of a printed circuit board. Then, a fitting protrusion for electrically connecting to a required electric circuit on the printed circuit board, a coil mounting space formed by surrounding the connection seat portion and the peripheral plate portion, and a lower end of the coil mounting space are defined. A current-carrying metal fitting including a coil locking portion, a coil mounted in the coil mounting space and having a lower edge supported by the coil locking portion, and a terminal screw screwed into a screw hole of the connection seat portion. And a pressure receiving portion that is formed downward from a peripheral edge of the support portion, is located in the coil mounting space, and is pressed against the upper end of the coil to apply the elastic force of the coil. , A connection terminal comprising a movable washer supported by the current-carrying metal so as to be able to move up and down. 2. The wiring according to claim 1, wherein the coil engaging portion of the current-carrying metal fitting is constituted by a coil receiving piece that is bent from a lower edge of the peripheral plate portion and protrudes toward the coil mounting gap side. For terminal. 3. A window hole is formed in the left and right peripheral plate portions along the coil mounting space, and both side edges of the coil in the coil mounting space are fitted into the window hole so that a lower edge of the window hole is formed. The terminal for wire connection according to claim 1, wherein the supporting edge is a coil engaging portion by supporting a lower end of the coil. 4. A linking protrusion is formed from both side edges of a lower plate part of the movable washer, and vertically long window holes are formed in the left and right peripheral plate parts, and the linking protrusion part is formed in the window hole. 2. The connection terminal according to claim 1, wherein the movable washer is held by being inserted so that the movable washer can be moved up and down.