JP2003346933A - Electric wire connecting terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric wire connecting terminal capable of allowing a worker to know the completion of connection, simplifying the shape of necessary components, and reducing the number of components. <P>SOLUTION: This electric wire connecting terminal comprises a housing 1 having an electric wire insertion hole 21. A terminal body 13 comprising a locking spring 5 for locking the electric wire inserted from the electric wire insertion hole 21 in a state of being electrically connected, is accommodated in the housing 1. A flip spring 6 is fixed to the housing 1 at a position where a tip of the electric wire inserted from the electric wire insertion hole 21 is abutted, and returnes when the electric wire is properly connected. As the reaction force to the electric wire is suddenly reduced when the flip spring 6 returns, the worker inserting the electric wire can know the completion of connection by click feeling. <P>COPYRIGHT: (C)2004,JPO

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire connection terminal which completes a connection simply by inserting an electric wire.

[0002]

2. Description of the Related Art Conventionally, in a wire connection terminal which is completed by simply inserting a wire, a connection completion display is provided so that an operator can know that the wire connection has been completed. Things are provided.

As this kind of electric wire connection terminal, for example, FIG.
9 is shown. The electric wire connection terminal includes the housing 1 provided with an electric wire insertion hole 21 into which the electric wire C is inserted. The housing 1 has a terminal plate 4 having a contact piece 41 extending in a direction in which the electric wire is inserted in the vicinity of a portion through which the electric wire passes, and a terminal plate 4 partially opposed to the contact piece 41 and inserted from the electric wire insertion hole 21. A lock spring 5 that locks the held electric wire between the contact piece 41 and the electric wire is housed. In addition, a display hole 27 is opened in the housing 1 on the opposite side of the lock spring 5 with the contact piece 41 interposed therebetween, and is slidable in a direction in which the contact piece 41 and the lock spring 5 are inserted through the display hole 27 and are arranged. A display button 9 is provided. The display button 9 is provided with a biasing piece 94 protruding inside the housing 1 in a direction intersecting the sliding direction of the display button 9. Also, housing 1
Is provided with a spring receiving piece 28 facing the urging piece 94 in the sliding direction of the display button 9 at a position closer to the lock spring 5 than the urging piece 94. A button urging spring 10 is placed between the urging piece 94 and the spring receiving piece 28, and the display button 9 is urged by the button urging spring 10 in a direction away from the lock spring 5.

Further, the display button 9 has a locking piece 9 which extends in a direction closer to the lock spring 5 on a side farther from the wire insertion hole 21 than the contact piece 41 and can bend in the insertion direction of the wire C.
The locking piece 91 is provided with a locking claw 92 that engages with the end of the contact piece 41 on the side away from the wire insertion hole 21 so as to protrude in a direction approaching the wire insertion hole 21. Further, from the portion of the display button 9 facing the lock spring 5 and not facing the contact piece 41, a pressing piece 93 is protruded in a direction approaching the lock spring 5. When the locking claw 92 is engaged with the terminal plate 4, the pressing piece 93 is
The portion not opposed to 1 is pressed in a direction away from the contact piece 41 to be bent.

As shown in FIG. 20, in the above-mentioned electric wire connection terminal, the electric wire C is inserted into the electric wire insertion hole 21 and the electric wire C is inserted into the electric wire insertion hole 2 as shown by an arrow E in the locking piece 91 of the display button 9.
When the push button is pressed away from the button 1, the locking piece 91 bends to release the engagement between the locking claw 92 and the terminal plate 4, and the display button 9 is turned by the spring force of the button urging spring 10 as shown by an arrow D. It moves in a direction away from the lock spring 5. At the same time, the lock spring 5 that has been bent by the display button 9 returns to lock the electric wire C, and the connection is completed. At this time, the operator can know that the connection has been completed by seeing that the display button 9 projects outside the housing 1.

In order to pull out the electric wire C, the display button 9 is pushed in the direction approaching the lock spring 5 as shown by an arrow B in FIG. At this time, the locking piece 91 returns, the locking claw 92 engages with the terminal plate 4, and the wire connection terminal returns to the state before the wire insertion.

[0007]

However, in the above-mentioned conventional configuration, a button urging spring 10 for urging the display button 9 is required separately from the display button 9, so that the number of parts is increased. Also,
An urging piece 94 that contacts the button urging spring 10, a locking piece 91 that can bend in the direction in which the electric wire is inserted, a locking claw 92 that engages with the terminal plate 4, and does not contact the contact piece 41. Since the pressing piece 93 for pressing the lock spring 5 is provided on the display button 9, the shape of the display button 9 is complicated.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electric wire connection terminal which allows a worker to know the completion of connection, has a simple required component shape, and has a small number of components. To provide.

[0009]

According to a first aspect of the present invention, there is provided a housing provided with an electric wire insertion hole into which an electric wire is inserted, and the electric wire inserted into the electric wire insertion hole is chained in an electrically connected state. A terminal body provided with a lock spring made of a leaf spring for locking, and an inversion spring made of a leaf spring and pressed by the tip of the electric wire when the electric wire is properly connected to the terminal body to be inverted to give a click feeling. It is characterized by the following.

According to a second aspect of the present invention, in the first aspect of the present invention, there is provided a display portion having one end connected to a displacement portion displaced in accordance with the deformation of the reversing spring and extending along the direction of displacement of the displacement portion. The housing is provided with a guide hole extending along the direction of displacement of the displacement portion, one end of which is open to the outer surface and through which the display portion is inserted, and a tip portion of the display portion along with the displacement of the displacement portion. Is characterized by entering and exiting on an outer surface of the housing.

According to a third aspect of the present invention, in the first aspect of the present invention, the reversing spring comprises a leaf spring having a slit at at least one position, and is held by the housing at one end in a direction along the slit. One of the portions sandwiching the slit is bent so as to shorten the distance between both ends of the slit, and the other of the portions sandwiching the slit is bent to one side of the front and back.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the housing includes a body provided with the wire insertion hole and a cover coupled to the body, and the reversing spring extends along the slit. At one end in the direction, between the body and the cover, the terminal body is disposed across the body and the cover,
A positioning notch is provided on a periphery of the reversing spring, and an engagement notch is provided on the terminal body to engage with the positioning notch of the reversing spring.

According to a fifth aspect of the present invention, in the third aspect of the present invention, the housing comprises a body provided with the wire insertion hole and a cover coupled to the body, and the reversing spring extends along the slit. A positioning notch is provided at a peripheral edge of a portion sandwiched between the body and the cover in the reversing spring at one end in the direction, and a positioning notch is provided in the inversion spring. It is characterized in that one of the cover and the cover is provided with a positioning projection that engages with the positioning notch.

According to a sixth aspect of the present invention, in the third aspect of the present invention, the housing includes a body provided with the wire insertion hole and a cover coupled to the body, and the reversing spring extends along the slit. A positioning piece that is sandwiched between the body and the cover at one end in the direction and that is sandwiched between the body and the cover in the reversing spring is provided with a positioning piece that protrudes to one surface side. A positioning groove into which the positioning piece is inserted is provided in one of the body and the cover.

According to a seventh aspect of the present invention, in the third aspect of the present invention, the housing includes a body provided with the wire insertion hole and a cover coupled to the body, and the reversing spring extends along the slit. A positioning hole is provided at one end in the direction between the body and the cover, and at a position sandwiched between the body and the cover in the reversing spring, a positioning hole is provided between the body and the cover. On one side, a positioning projection for engaging with the positioning hole of the reversing spring is provided.

The invention according to claim 8 is the invention according to claims 3 to 7.
In the invention according to any one of the above, a connecting spring comprising a plurality of the reversing springs and a connecting portion that integrally connects one end of each of the reversing springs in a direction along the slit so that the slits are arranged side by side. It is characterized by having.

According to a ninth aspect of the present invention, in the third aspect of the present invention, the reversing spring has a direction along the slit at a position where the electric wire comes into contact with a side of the portion sandwiching the slit where the curved portion is not provided. A display portion fixed to the housing at one end of the reversing spring and integrally connected to the other end of the reversing spring in a direction along the slit, and extending in a direction approaching the wire insertion hole along a direction in which the wire is inserted. The housing is provided with a guide hole extending along the direction in which the electric wire is inserted and having one end opened to the outer surface and through which the display unit is inserted, and in a state where the reversing spring is not pressed by the electric wire, The tip of the display unit does not protrude from the outer surface of the housing, and the display unit is formed to have a length such that the tip of the display unit protrudes above the outer surface of the housing when the reversing spring is inverted. And wherein the are.

[0018]

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

(Embodiment 1) As shown in FIG. 1, the electric wire connection terminal of the present embodiment comprises a body 2 having an electric wire insertion hole 21 into which an electric wire is inserted, and a cover 3 coupled to the body 2. A housing 1 is provided.

The body 2 has a terminal plate 4 provided with a contact piece 41 extending in the direction in which the electric wire is inserted in the vicinity of the position where the electric wire passes. A terminal body 13 including a lock spring 5 for locking is housed. The terminal plate 4 is further provided with a terminal base 42 extending along the direction in which the electric wire is inserted on the opposite side of the contact piece 41 with the lock spring 5 interposed therebetween, and is separated from the electric wire insertion hole 21 at the terminal base 42. A lock spring stopper 43 is provided at an end on the opposite side in such a manner as to project in a direction approaching the contact piece 41. Further, the lock spring retaining piece 4 is sandwiched between the body 2 and the lock spring 5.
On the opposite side of the lock spring 3, a lock spring stopper convex portion 22 is provided close to the lock spring 5.
Is protruding. The lock spring 5 is prohibited from moving in the wire insertion direction by being sandwiched between the lock spring stopper 43 of the terminal plate 4 and the lock spring stopper 22 of the body 2.

The lock spring 5 is made of a band-shaped metal piece, and is a plate-shaped lock spring base 51 which is placed on the terminal base 42 and extends along the direction in which the electric wire is inserted, and an electric wire insertion hole 21 of the lock spring base 51. The lock piece 52 bent from the end closer to the contact piece 41 to the direction approaching the contact piece 41 and extended to the position where the electric wire passes, and the contact piece 41 from the end of the lock spring base 51 away from the wire insertion hole 21. A pressing piece 53 is provided which extends in the approaching direction, is bent in an S-shape, and extends to a position where the electric wire passes. Here, the locking piece 52 and the tip of the holding piece 53 are inclined in a direction away from the wire insertion hole 21 toward the direction approaching the contact piece 41 so that the electric wire is guided along the contact piece 41. . The holding piece 53 is bent near the tip so that the tip is separated from the contact piece 41, so that the tip of the holding piece 53 does not catch on the electric wire when the electric wire is inserted or removed. In a state where the electric wire is properly inserted from the electric wire insertion hole 21 without causing an abnormality such as bending in the middle (that is, a state where the connection is completed), the lock spring 5
The tip of the locking piece 52 cuts into the wire to prevent the wire from coming off, and the holding piece 53 presses the wire against the terminal plate 4.

The lock piece 5 is inserted through the body 2 and has one end.
2 is provided with a release button 7 whose other end is exposed from an opening 23 provided near the wire insertion hole 21. When the release button 7 is pressed, the lock piece 52 is pressed in a direction away from the wire insertion hole 21, and the tip of the lock piece 52 is
Move away from.

The wire connection terminal is further provided on the opposite side of the wire insertion hole 21 with the terminal body 13 interposed therebetween, and the lock spring stopper 43
A reversing spring 6 partially sandwiched between the body 2 and the cover 3 at a position away from the main body. As shown in FIG. 4, the reversing spring 6 is formed by mutually connecting an interlocking spring piece 11 and a starting spring piece 12 each formed of a metal rectangular leaf spring.

As shown in FIG. 3, the starting spring piece 12 has
Two coupling pieces 12a projecting from one end in the longitudinal direction to both sides in the lateral direction are extended, and each coupling piece 12a is bent so as to sandwich the interlocking spring piece 11, so that The starting spring piece 12 is connected. In addition, the starting spring piece 12 is
a, it is bent at a position closer to the intermediate portion in the longitudinal direction of the starting spring piece 12, and the more the starting spring piece 12 moves away from the coupling piece 12a toward the end farther from the coupling piece 12a in the longitudinal direction, It is separated from the spring piece 11. Further, the end of the starting spring piece 12 on the side away from the coupling piece 12 a in the longitudinal direction is bent in a direction approaching the interlocking spring piece 11. Further, a through hole 12b is provided at the center of the starting spring piece 12, and the connecting piece 12 of the through hole 12b is provided.
A meshing projection 12c protrudes from the edge closer to a.

As shown in FIG. 2, the interlocking spring piece 11
One end of two slits juxtaposed along the longitudinal direction is provided with a continuous U-shaped slit 11a through a slit extending along the lateral direction.
A tongue piece 11b surrounded by a and a frame-shaped piece 11d connected to one end of the tongue piece 11b are formed. An engagement notch 11c is provided at the tip of the tongue piece 11b. Tongue piece 11b
Is bent in a direction approaching the starting spring piece 12, and the engagement notch 11c and the engagement projection 12c are engaged. Here, the inclination in the direction approaching the starting spring piece 12 toward the tip of the tongue piece 11b is slightly larger at the base than at the tip, and the tongue piece 11b is in the longitudinal direction when the starting spring piece 12 is not pressed by the electric wire. The intermediate portion is warped so as to expand in a direction approaching the starting spring piece 12.

When the connection of the electric wire C is completed, the reversing spring 6 moves in the longitudinal direction of the starting spring piece 12 in the interlocking spring piece 11.
The part where the interlocking spring piece 11 and the starting spring piece 12 overlap is the
And body 2.

On the opposite side of the cover 3 with respect to the wire insertion hole 21 with the reversing spring 6 therebetween, an operation recess 31 for accommodating a part of the tongue piece 11c when the reversing spring 6 is operated is described later. It is recessed so as to be depressed in a direction away from the insertion hole 1a. Further, a warp preventing convex portion 33 is provided at a bottom of the operation recess 31 at a portion facing an end of the interlocking spring piece 11 on a side remote from the coupling piece 12 a in a direction approaching the interlocking spring piece 11. .

The operation of the electric wire connection terminal according to this embodiment will be described. As shown in FIG. 5A, the electric wire C inserted from the electric wire insertion hole 21 is
When the tip of b is pressed away from the wire insertion hole 21, the bending of the tongue 11b increases, and the reaction force received by the wire C by the spring force of the tongue 11b increases. At this time, the frame-shaped portion 11d of the interlocking spring piece 11 also receives a force such that the end of the interlocking spring piece 11 on the side away from the coupling piece 12a in the longitudinal direction is separated from the wire insertion hole 21, but the frame-shaped portion 11d is warped. The frame-shaped portion 11 d
Is prevented and the gap is secured between the tongue piece 11b and the bottom of the operation recess 31, so that the cover 3 does not hinder the operation of the tongue piece 11b. Furthermore, electric wire C
Presses the starting spring piece 12 and the bending of the tongue piece 11b increases, the intermediate portion of the tongue piece 11b
b comes into contact with the edge on the side remote from the engagement projection 12c. When the starting spring piece 12 is further pressed, the tongue piece 11
When the middle part of b receives a force in the direction away from the wire insertion hole 21 and exceeds the dead point (the point where the distortion of the tongue piece 11b becomes maximum),
As shown in FIG. 5B, the bending direction of the tongue piece 11b is reversed, and the intermediate portion of the tongue piece 11b projects inside the operation recess 31. That is, the reversing spring 6 is reversed. At this time, the reaction force received by the electric wire C sharply decreases, so that the operator can know the completion of the connection by a click feeling. Also, as shown in FIG. 5C, a sound is made when the end of the starting spring piece 12 on the side remote from the coupling piece 12a comes into contact with the interlocking spring piece 11, so that the worker can know the connection completion also by the sound. Can be.

When the release button 7 is pressed to remove the electric wire C, the release button 7 presses the lock piece 52 in the wire insertion direction, whereby the lock piece 52 is bent and separated from the electric wire C, and the electric wire C is pulled out. be able to. When the electric wire C separates from the starting spring piece 12, the tongue piece 11b is reversed by the spring force of the starting spring piece 12 in the opposite direction to that at the time of insertion of the electric wire and returns to the shape before the insertion of the electric wire. At this time, the operator can also know that the connection has been completed, and does not need to work before inserting the electric wire.

According to the above configuration, there is no need to provide a component for notifying the completion of insertion in addition to the reversing spring 6 which can be handled as an integral component, so that the number of components is reduced as compared with the case where the display button 9 is used. can do. Further, since the reversing spring 6 is made of a leaf spring, its shape is simple.

Instead of providing the warp preventing convex portion 33, the operation recess 31 may be formed so deep that the frame-shaped piece 11d does not contact the bottom of the operation recess 31 until the tongue piece 11b is inverted.

(Embodiment 2) In addition to the same structure as that of Embodiment 1, the electric wire connection terminal of this embodiment
As shown in FIG. 1A, the starting spring piece 12 includes a display unit 8 having one end integrally connected to an end of the starting spring piece 12 on the side away from the interlocking spring piece 11. The body 2 is provided with a guide hole 24 penetrating the body 2 along the direction in which the electric wire is inserted. One end of the guide hole 24 opens near the end of the starting spring piece 12 that is remote from the interlocking spring piece 11, and the other end opens to the outer surface of the housing 1. The display unit 8 is inserted into the guide hole 24, and the tip of the display unit 8 projects from the outer surface of the housing 1 in a state where the starting spring piece 12 is not pressed by the electric wire C. A portion of the display section 8 protruding from the outer surface of the housing is coated with an insulating coating.

When the electric wire C is inserted from the electric wire insertion hole 21 and the starting spring piece 12 is pressed and displaced by the electric wire C as shown in FIG. The inside of the hole 24 is slid, and the tip of the display unit 8 is stored in the guide hole 24. That is, the tip of the starting spring piece 12 on the side away from the interlocking spring piece 11 functions as a displacement part. Other configurations are the same as those of the first embodiment.

According to the present embodiment, in addition to the same effects as those of the first embodiment, the operator can visually recognize the connection of not only the touch and the sound but also seeing that the tip of the display unit 8 is stored. You can know the completion. Further, since the display section 8 is coated with the insulating coating, the charging section is not exposed, so that the display section 8 is safe. Furthermore, if the insulating coating is colored prominently, the completion of the insertion can be more easily recognized.

(Embodiment 3) The electric wire connection terminal of the present embodiment is different from Embodiment 1 in the respective shapes of the body 2, the cover 3, and the reversing spring 6. The reversing spring 6 in the present embodiment is formed of a single metal rectangular leaf spring as shown in FIGS. 7A and 8. The reversing spring 6 is provided with two slits 61 extending in the longitudinal direction, respectively. Hereinafter, a portion closer to the end of the reversing spring 6 than the extension of the line connecting the ends on the same side of the slit 61 in the longitudinal direction of the reversing spring 6 at both ends in the direction along the slit 61 of the reversing spring 6. Is called a reverse spring fixed end 62 and the other is a reverse spring free end 63. Two side pieces 64 sandwiching the two slits 61 sandwiched between the inverted spring fixed end 62 and the inverted spring free end 63
Is bent to one side of the front and back at an intermediate portion in the longitudinal direction as shown in FIG. 7 (b). As a result, the distance between both ends of the slit 61 is shortened, and a portion sandwiched between the two slits 61 is a flexure piece whose longitudinal middle portion is bent so as to project to one of the front and back sides as shown in FIG. 65
It has become. The position and orientation of the reversing spring 6 are set so that when the electric wire is properly connected, the distal end of the electric wire comes into contact with the surface of the bending piece 65 on the side where the intermediate portion protrudes, and as shown in FIG. The body 2 at the spring fixed end 62
And the cover 3.

The body 2 in the present embodiment has
A jig insertion hole 25 extending along the direction in which the electric wire is inserted and penetrating through the body 2 is provided. One end of the jig insertion hole 25 opens toward the surface of the reversing spring free end 63 closer to the wire insertion hole 21, and the other end opens on the outer surface of the housing 1. Further, instead of providing the cover 3 with the warpage preventing convex portion 33, the cover 3 is separated from the wire insertion hole 21 of the bending piece 65 at a position farther from the middle in the longitudinal direction of the reversing spring 6 than the position where the wire C contacts. A projection 32 that abuts on the side of the wire is protruded from the bottom of the operation recess 31 in a direction approaching the electric wire insertion hole 21. Other configurations are described in Embodiment 1.
Is the same as

When the distal end of the electric wire C inserted from the electric wire insertion hole 21 comes into contact with the bending piece 65 and the bending piece 65 is pressed by the electric wire C and exceeds the dead point (the point at which the distortion of the bending piece 65 becomes maximum). The bending direction of the bending piece 65 is reversed. That is, the reversing spring 6 is reversed. At this time, since the reaction force to the electric wire C is sharply reduced, the operator can know the completion of insertion by a click feeling.

When the rod-shaped jig T is inserted into the jig introduction hole 25 and the free end 63 of the reversing spring is pressed after the wire C is pulled out, the reversing spring 6 is deformed, and the wire insertion of the bending piece 65 is performed. The surface remote from the hole 21 is pressed against the projection 32 of the cover 3. At this time, the bending piece 65 receives the force and crosses over the dead center again, and bends so that the intermediate portion protrudes in a direction approaching the wire insertion hole 21. That is, the reversing spring 6 returns to the state before the electric wire C was inserted. Thereafter, the jig T is moved to the arrow G in FIG.
The jig is removed from the jig introduction hole 25 as shown by.

According to the above configuration, since the reversing spring 6 is formed by a single leaf spring, the number of components is reduced as compared with the case where the reversing spring 6 is composed of a plurality of parts, and material and processing costs are reduced. Can be reduced.

(Embodiment 4) In this embodiment, the point that the housing 1 is composed of the body 2 and the cover 3 and the reversing spring 6 is sandwiched between the body 2 and the cover 3 is the same as that of the third embodiment. The locking spring stopper 43 of the plate 4 is
The third embodiment is different from the third embodiment in that it is arranged at a position close to.
Also, the shape of the terminal plate 4 is different from that of the third embodiment. In the terminal plate 4, the terminal base 42 is extended until the end remote from the wire insertion hole 21 projects toward the cover 3. At 42, an engagement notch (not shown) is provided at a position further away from the wire insertion hole 21 than the lock spring stopper 43. The point that the reversing spring 6 is a leaf spring and is provided with two slits 61 is the same as that of the third embodiment, but a positioning notch 67 is provided on the side edge of the reversing spring fixed end 62 as shown in FIG. The present embodiment differs from the third embodiment. Further, two slits 61 in the reversing spring 6 are provided.
The shape of the side piece 64 sandwiching the side piece is different from that of the third embodiment.
A curved portion 66 is formed in the middle portion of 4 so as to protrude to one side of the front and back sides, and portions of the side piece 64 sandwiching the curved portion 66 are substantially flush with each other.

When assembling the reversing spring 6 to the housing 1, positioning is performed by engaging a positioning notch 67 provided on the reversing spring 6 with an engaging notch provided on the terminal base 42, and FIG. The body 2 and the cover 3 are connected as shown in FIG. Other configurations are the same as those of the third embodiment.

According to the above configuration, in addition to the same effect as in the third embodiment, the movement of the reversing spring 6 with respect to the body 2 is restricted by engaging the positioning notch 67 with the engaging notch. The positioning of the spring 6 becomes easy.

Instead of extending the terminal base portion 42 and providing an engagement notch, a terminal plate 4 having the same shape as the terminal plate 4 used in the first embodiment is used, and a projection engaging with the positioning notch 67 is used. The part may be provided on the body 2 or the cover 3.

(Embodiment 5) The electric wire connection terminal in this embodiment is assumed to have two electric wire insertion holes 21 arranged in a direction perpendicular to the drawing of FIG. Each reversing spring 6 is shown in FIG.
As shown in FIG. 7, the reversing spring fixed ends 62 are connected to each other via a connecting portion 6b to form a connecting spring 6a.

By employing the above configuration, the same operation as the two independent reversing springs 6 can be obtained by the connection spring 6a, which is a single component, and the components can be compared with the case where two independent reversing springs 6 are used. The score can be reduced. Other configurations are the same as those of the third embodiment.

(Embodiment 6) The electric wire connection terminal according to the present embodiment has the same structure as that of the fifth embodiment, and also includes a connecting spring 6
13A, the positioning piece 6 whose end on the side where the connecting portion 6b is provided is bent substantially at right angles to the front and back surfaces as shown in FIG.
The body 2 is provided with a positioning groove (not shown) into which the positioning piece 68 is inserted. Other configurations are the same as in the fifth embodiment.

According to the above configuration, in addition to the same effect as in the third embodiment, the movement of the connecting spring 6a with respect to the body 2 is restricted by inserting the positioning piece 68 into the positioning groove. Positioning becomes easy. Note that the positioning piece 68 may be provided on the reversing spring 6 not connected by the connecting portion 6b.

(Embodiment 7) The electric wire connection terminal of the present embodiment includes a terminal body 13 and a housing 1 similar to those of Embodiment 3, but differs in the following points. The reversing spring 6
As shown in FIG. 14, in addition to the slit 61, the inverted spring fixed end 62, the inverted spring free end 63, the columnar portion 64, the curved portion 66, and the bending piece 65 similar to the inverted spring 6 in the fourth embodiment, are provided. , The positioning hole 6 in the reverse spring fixed end 62.
9, and positioning holes 69 are formed in the body 2.
Positioning projections 2 as shown in FIG.
6 are protrudingly provided. The cover 3 is provided with a recess 34 for accommodating a portion of the positioning projection 26 that penetrates the positioning hole 69.

When fixing the reversing spring 6 to the housing 1, the positioning projection 26 is inserted into the positioning hole 69 as shown by the arrow A in FIG. 15 to perform positioning, and then the cover 3 is connected to the body 2. At this time, the positioning protrusion 26
The part penetrating the positioning hole 69 in the escape recess 34
Is stored in. Other configurations are the same as those of the third embodiment.

According to the above configuration, the engagement of the positioning hole 69 with the positioning projection 26 restricts the movement of the reversing spring 6 with respect to the body 2, so that the positioning of the reversing spring 6 is facilitated and the positioning piece is formed. Less material is required for the reversing spring 6 than when positioning is performed by a combination of the positioning groove 68 and the positioning groove.

If the body 2 is formed of a thermoplastic material and the portion of the positioning projection 26 that penetrates the positioning hole 69 is melted by heat and crushed during positioning, the reversing spring 6 is fixed to the body 2. It is possible to more reliably prevent the position of the reversing spring 6 from shifting until the connection of the cover 3 is completed. As shown in FIG. 16, a connecting spring 6a having two reversing springs 6 connected by a connecting portion 6b similar to the fifth embodiment may be used. Here, the positioning groove in the sixth embodiment and the positioning protrusion 26 in the present embodiment are provided on the body 2.
The positioning protrusion 26 and the positioning groove may be provided on the cover 3.

(Embodiment 8) The electric wire connection terminal according to the present embodiment has the same structure as that of the third embodiment, and also has the same structure as that of FIG.
As shown in (a), the display unit 8 is integrally connected to the reversing spring free end 63. One end of the body 2 is opened near the wire insertion hole 21 instead of the jig hole 25 and the other end is opened. Guide hole 2 opened closer to wire insertion hole 21 than reversing spring 6
4 are provided. The display portion 8 is inserted into the guide hole 24, and is formed to have a length such that the front portion fits in the guide hole 24 when the bending piece 65 is not inverted.

As shown in FIG. 17A, when the electric wire C is inserted through the electric wire insertion hole 21 and the distal end of the electric wire C presses the bending piece 65, the bending direction of the bending piece 65 is reversed.
As shown in (b), the reversing spring free end 63 is displaced in a direction approaching the wire insertion hole 21. Accordingly, the display unit 8 slides inside the guide hole 24, and the tip of the display unit 8 projects from the outer surface of the housing 1. That is, the reversing spring free end portion 63 functions as a displacement portion. Here, a portion of the display unit 8 protruding from the outer surface of the housing 1 is coated with an insulating coating.

Further, after the connection of the electric wire C is released and before the electric wire C is connected again, the tip of the display unit 8 is brought into contact with the wall W as shown in FIG. The tip of the display unit 8 is pushed into the guide hole 24 by pushing in the direction of the arrow F or the like. Then the reversing spring free end 6
3 is pressed by the display unit 8 to deform the reversing spring 6,
The surface of the wire 5 on the side away from the wire insertion hole 21 is pressed by the protrusion 32. When the bending piece 65 is displaced beyond the dead center, FIG.
As shown in FIG. 8B, the bending piece 65 bends again so that the intermediate portion protrudes in a direction approaching the wire insertion hole 21, that is, the reversing spring 6 returns to the state before the wire insertion. Other configurations are the same as those of the third embodiment.

According to the present embodiment, the worker can visually recognize the completion of the connection not only by touch but also by seeing the tip of the display unit 8 protruding. Further, since the display section 8 is coated with the insulating coating, the charging section is not exposed, so that the display section 8 is safe.

Incidentally, a configuration for positioning may be provided similarly to the fourth, sixth, and seventh embodiments. Further, similarly to the fifth embodiment, the plurality of reversing springs 6 are connected to the connecting portions 6b.
May be used. Furthermore, if the insulating coating is colored prominently, the completion of the insertion can be more easily recognized.

[0057]

According to the first aspect of the present invention, when the wire presses the reversing spring and the reversing spring reverses, the reaction force received by the wire changes, so that the operator can know the completion of the connection by touch. . Further, since the above effect can be obtained only by fixing the reversing spring, which can be treated as an integral part, inside the housing, the number of parts is smaller than in a case where the completion of insertion is notified by a plurality of parts. Further, since the reversing spring is made of a leaf spring, the shape is simple.

According to the second aspect of the present invention, the display device has a display portion whose tip enters and exits the housing when the reversing spring is reversed.
The operator can know the completion of the connection not only by touch but also visually.

According to the third aspect of the present invention, since the reversing spring is composed of a single leaf spring, the number of parts is reduced as compared with the case where the reversing spring is composed of a plurality of parts, and material and processing costs are reduced. Can be.

According to a fourth aspect of the present invention, since the positioning notch is provided in the reversing spring and the engaging notch for engaging with the positioning notch is provided in the terminal body, the positioning notch and the engaging notch are engaged. The movement of the reversing spring relative to the housing is regulated by the combination, and the positioning is facilitated.

According to the fifth aspect of the present invention, the positioning notch is provided on the reversing spring, and the positioning protrusion engaging with the positioning notch is provided on one of the body and the cover. The engagement of the projection with the projection restricts the movement of the reversing spring with respect to the housing, and facilitates positioning.

According to a sixth aspect of the present invention, since the positioning piece is provided on the reversing spring and the positioning groove into which the positioning piece is inserted is provided on one of the body and the cover, the positioning piece is inserted into the positioning groove. By doing so, the movement of the reversing spring with respect to the housing is regulated, and positioning becomes easy.

According to a seventh aspect of the present invention, since the positioning hole is provided in the reversing spring and the positioning projection for engaging with the positioning hole is provided on one of the body and the cover, the positioning hole and the positioning projection are engaged. By doing so, the movement of the reversing spring with respect to the housing is regulated, and positioning becomes easy. Further, as compared with the case where a convex portion is provided on the reversing spring and a concave portion is provided on one of the body and the cover, there is no need to provide the convex portion.

The invention according to claim 8 is provided with a connecting spring comprising a plurality of reversing springs and a connecting portion for connecting one end of each reversing spring in a direction along the slit, so that the connecting spring which is one component is provided. The completion of connection of a plurality of electric wires can be individually notified to an operator. Therefore, the number of components can be reduced as compared with the case where a plurality of reversing springs are used.

According to the ninth aspect of the present invention, since the distal end is housed in the housing in a state where the electric wire is not inserted and the reversing spring is reversed, the display portion protrudes from the outer surface of the housing, so that the operator can feel the touch. Not only can you know the connection is complete, but also visually.

[Brief description of the drawings]

FIG. 1 is a sectional view showing Embodiment 1 of the present invention.

FIG. 2 is a front view showing an interlocking spring piece used in the first embodiment of the present invention.

FIG. 3 is a front view showing a starting spring piece used in the first embodiment of the present invention.

FIG. 4 is a perspective view showing a reversing spring used in the first embodiment of the present invention.

FIG. 5 is an operation explanatory diagram of the first embodiment of the present invention.

FIG. 6 is an operation explanatory diagram of Embodiment 2 of the present invention.

FIGS. 7A and 7B are diagrams showing a reversing spring used in a third embodiment of the present invention, wherein FIG.
(B) is a sectional view.

FIG. 8 is a perspective view showing a reversing spring used in the embodiment.

FIG. 9 is a sectional view showing Embodiment 3 of the present invention.

FIG. 10 is a front view showing a reversing spring used in Embodiment 4 of the present invention.

FIG. 11 is a sectional view of the same.

FIG. 12 is a front view showing a connection spring used in a fifth embodiment of the present invention.

13A and 13B are diagrams showing a connection spring used in a sixth embodiment of the present invention, wherein FIG. 13A is a front view and FIG. 13B is a cross-sectional view.

FIG. 14 is a front view showing a reversing spring used in Embodiment 7 of the present invention.

FIG. 15 is a sectional view showing Embodiment 7 of the present invention.

FIG. 16 is a front view showing a connection spring used in another mode of Embodiment 7 of the present invention.

FIG. 17 is an operation explanatory view showing Embodiment 8 of the present invention.

FIG. 18 is an operation explanatory view showing an operation of returning the reversing spring in the above.

FIG. 19 is a sectional view showing a conventional example.

FIG. 20 is a cross-sectional view showing a state where an electric wire is inserted in a conventional example.

[Explanation of symbols]

1 Housing 2 body 21 Wire insertion hole 24 Guide hole 26 Positioning protrusion 3 Cover 4 Terminal board 5 Lock spring 6 Reverse spring 61 slit 63 free spring end 67 Positioning notch 68 Positioning piece 69 Positioning hole 6a Connecting spring 6b Connecting part 8 Display 12 Starting spring piece 13 Terminal body C electric wire

Claims (9)

[Claims] 1. A housing having an electric wire insertion hole into which an electric wire is inserted, and a lock spring comprising a leaf spring for locking the electric wire inserted into the electric wire insertion hole in a state of being electrically connected. An electric wire connection terminal comprising: a terminal body; and a reversing spring made of a leaf spring, which is pressed by a tip of the electric wire when the electric wire is properly connected to the terminal body and inverts to give a click feeling. 2. A displacing portion which is displaced in accordance with the deformation of the reversing spring, has one end connected to the displacing portion, and a display portion extending along the direction of displacement of the displacing portion. A guide hole extending along one end and having one end opened to the outer surface and through which the display unit is inserted is provided, and the tip of the display unit enters and exits the outer surface of the housing with the displacement of the displacement unit. The electric wire connection terminal according to claim 1, wherein: 3. The reversing spring comprises a leaf spring having a slit at at least one position, and is held by a housing at one end in a direction along the slit, and one of the portions sandwiching the slit is formed by the slit. 2. The wire connection terminal according to claim 1, wherein the wire is bent so as to reduce the distance between both ends thereof, and the other of the portions sandwiching the slit is bent to one side of the front and back. 4. The housing comprises a body provided with the wire insertion hole and a cover coupled to the body, and the reversing spring is provided between the body and the cover at one end in a direction along the slit. The terminal body is disposed between the body and the cover, and a positioning notch is provided on a periphery of the reversing spring. The positioning notch of the reversing spring is provided in the terminal body. The electric wire connection terminal according to claim 3, further comprising an engagement notch for engaging with the electric wire. 5. The housing comprises a body provided with the wire insertion hole and a cover coupled to the body, and the reversing spring is provided between the body and the cover at one end in a direction along the slit. A positioning notch is provided at a periphery of a portion sandwiched between the body and the cover in the reversing spring, and the positioning notch is engaged with one of the body and the cover. The electric wire connection terminal according to claim 3, wherein a matching projection is provided. 6. The housing includes a body provided with the wire insertion hole and a cover coupled to the body, and the reversing spring is provided between the body and the cover at one end in a direction along the slit. Positioned between the body and the cover in the reversing spring, a positioning piece protruding to one side of the front and back surfaces is protrudingly provided, and one of the body and the cover is provided with the positioning piece. 4. The electric wire connection terminal according to claim 3, wherein a positioning groove into which the positioning piece is inserted is provided. 7. The housing comprises a body provided with the wire insertion hole and a cover coupled to the body, and the reversing spring is provided between the body and the cover at one end in a direction along the slit. Positioned between the body and the cover in the reversing spring, a positioning hole is provided between the body and the cover, and one of the body and the cover is engaged with the positioning hole of the reversing spring. 4. The electric wire connection terminal according to claim 3, wherein a matching projection is provided. 8. A connection spring comprising a plurality of said reversing springs and a connecting portion for integrally connecting one end of each reversing spring in a direction along said slit so that said slits are arranged side by side. The electric wire connection terminal according to any one of claims 3 to 7, wherein 9. The reversing spring is fixed to the housing at one end in a direction along the slit at a position where an electric wire abuts on a side of the portion sandwiching the slit where the curved portion is not provided. A display portion integrally connected to the other end in the direction along the slit and extending in a direction approaching the wire insertion hole along a direction in which the wire is inserted, and a housing in a direction in which the wire is inserted. A guide hole extending along one end and opening at one end to the outer surface is provided through which the display unit is inserted, and in a state where the reversing spring is not pressed by the electric wire, the tip of the display unit is separated from the outer surface of the housing. 4. The electric wire according to claim 3, wherein the display portion is formed to have a length such that a tip of the display portion protrudes on an outer surface of the housing when the reversing spring is reversed without protruding. Connecting terminal.