JP5483438B2 - Y terminal with movable insulation cap - Google Patents

Description

  The present invention relates to a Y terminal with a movable insulation cap, and in particular, a movable insulation cap suitable for attaching a Y terminal to a stud terminal while covering a terminal portion, which is a metal portion of a Y terminal (Y-type bare crimp terminal), with the insulation cap. This relates to the Y terminal.

  Conventionally, as shown in FIG. 5, a Y terminal 110 used for electrical wiring is connected to the electric wire 1 at a terminal portion 111 (a connecting portion 112 covered with an insulating coating) which is a Y-shaped flat metal portion. ) Is exposed, there is a risk of electric shock if an operator accidentally touches the terminal portion 111 during charging, and the terminal portion 111 is charged if the Y terminal 110 is detached from the stud terminal 120 during charging. There was a case where a short circuit or a ground fault was caused in contact with the part.

  Therefore, in general, an insulating tape is wound around the terminal portion 111 of the Y terminal 110 or an insulating cap is attached (see, for example, paragraphs 0003 and 0004 of Patent Document 1 below).

JP 2007-31171 A

  However, in the conventional Y terminal 110, since the insulating tape is wound around the terminal portion 111 of the Y terminal 110 removed from the stud terminal 120 or an insulating cap is attached, the Y terminal 110 is attached to the stud terminal 120. There was a problem that the insulating tape and the insulating cap had to be removed from the terminal portion 111.

In the case of banana plugs, the size of the terminal insertion hole is standardized worldwide, so the terminal can be inserted with the insulation cap attached by making the outer diameter of the insulation cap larger than the diameter of the terminal insertion hole. Banana plugs with insulating caps that can be inserted into the holes have been commercialized.
However, in the Y terminal 110, the knob 121 of the stud terminal 120, the base 122, and the conductor portion 123 provided between the lower surface of the knob 121 and the upper surface of the base 122 are basically cylindrical. There are various fine shapes, and the degree of opening for loosening the knob 121 is different. Therefore, it is necessary to consider these in order to construct a Y terminal that can be attached to the stud terminal with the insulating cap attached.

  An object of the present invention is to provide a Y terminal with a movable insulating cap that can be attached to a stud terminal with an insulating cap attached.

The Y terminal with a movable insulating cap of the present invention includes a columnar knob (121), a columnar base (122), and a columnar conductor portion (123) provided between the lower surface of the knob and the upper surface of the base. Y terminal (10) with a movable insulating cap attached to a stud terminal (120) provided with a terminal part (11) which is a Y-shaped flat metal part, and a cylindrical insulating coating, And the connection part (12) for connecting the said terminal part attached to the front-end | tip of this insulation coating, and the electric wire (1) inserted from the terminal of this insulation coating, and the said Y terminal with a movable insulation cap said An insulating cap (13) for accommodating the terminal portion and the tip of the connecting portion when not attached to the stud terminal, and an outer peripheral surface of the connecting portion on the terminal side of the insulating coating; and The movable insulation key A spring spring (14) for urging the insulating cap toward the tip of the insulating cap when the Y terminal with a cap is not attached to the stud terminal; and the terminal end side of the insulating coating of the connecting portion And a cylindrical spring spring case (15) for accommodating the spring spring attached to the outer peripheral surface of the outer peripheral surface and the end portion of the insulating cap, and attaching the Y terminal with the movable insulating cap to the stud terminal. At this time, the upper end and the lower end of the front end surface of the insulating cap come into contact with the knob of the stud terminal and the outer peripheral surface of the base, respectively, and the insulating cap resists the spring spring toward the end side of the spring spring case. The terminal portion is exposed from the insulating cap by sliding.
Here, the length from the upper end to the lower end of the front end surface of the insulating cap may be greater than 5 mm.
You may further provide the projection board (21) attached to the upper surface of the front-end | tip part of this insulation cap so that a front-end | tip surface may become the same plane as the front-end | tip surface of the said insulation cap.
A hook plate (31) attached to the upper surface of the tip portion of the insulating cap so that the tip surface is flush with the tip surface of the insulating cap, and having a plurality of rod-shaped convex portions (31a) on the upper surface. May further be provided.

  Since the Y terminal with the movable insulating cap of the present invention can be attached to the stud terminal with the insulating cap attached, it is possible to eliminate the risk of accidental electric shocks by the worker during charging and the stud during charging. Even if it comes off from the terminal, it is possible to avoid the occurrence of a short circuit or a ground fault.

It is a figure which shows the structure of the Y terminal 10 with a movable insulation cap by one Example of this invention, (a) is the figure which decomposed | disassembled the Y terminal 10 with a movable insulation cap, (b) is the Y terminal with a movable insulation cap. 10 is a side cross-sectional view of the insulating cap 13 when it is cut in the middle in the up-down direction when 10 is assembled. FIG. It is a figure for demonstrating a motion of the insulation cap 13 when attaching the Y terminal 10 with a movable insulation cap shown in FIG. 1 to the stud terminal 120. FIG. It is a figure which shows the structure of the insulation cap 13 'by the modification of the insulation cap 13 shown in FIG. It is a figure which shows the structure of insulating cap 13 '' by the other modification of the insulating cap 13 shown in FIG. It is a figure for demonstrating the subject of the conventional Y terminal 111. FIG.

  For the above purpose, when the Y terminal with a movable insulating cap is attached to the stud terminal, the upper end and the lower end of the front end surface of the insulating cap hit the knob of the stud terminal and the outer peripheral surface of the base, respectively, and the insulating cap resists the spring spring. And it was implement | achieved by comprising so that it might be pushed toward the terminal end side of a spring-spring case, and a terminal part might be exposed from an insulation cap.

Embodiments of a Y terminal with a movable insulating cap according to the present invention will be described below with reference to the drawings.
As shown in FIG. 1A, a Y terminal 10 with a movable insulating cap according to an embodiment of the present invention includes a terminal portion 11, a connecting portion 12, an insulating cap 13, a spring spring 14, and a spring spring case 15. It comprises.

  In the following description, the insulating cap 13 side of the Y terminal 10 with an insulating cap is the front end side, and the spring spring case 15 side of the Y terminal 10 with the insulating cap is the end side.

  The terminal part 11 is the same as the terminal part 111 of the Y terminal 110 shown in FIG.

The connecting portion 12 includes a cylindrical insulating coating, and is used to connect the terminal portion 11 attached to the tip of the insulating coating and the electric wire 1 inserted from the end of the insulating coating.
A male screw 12a that is screwed with a female screw (not shown) formed on the inner peripheral surface on the distal end side of the spring spring case 15 is formed on the outer peripheral surface on the distal end side of the insulating coating of the connecting portion 12. As a result, if the male screw 12a is screwed with the female screw after the portion of the connecting portion 12 excluding the predetermined length portion from the tip of the insulating coating is inserted into the spring spring case 15, the connecting portion 12 is connected to the spring spring case. 15 (see FIG. 1B).

The insulating cap 13 is for accommodating the terminal portion 11 and the distal end portion of the connecting portion 12 when the Y terminal 10 with the movable insulating cap is not attached to the stud terminal 120. The cylindrical portion 13a and the cylindrical portion 13a And two cap portions 13b attached to both side surfaces on the distal end side.
The cylindrical portion 13 a has a slightly larger inner diameter than the outer diameter of the insulating coating of the connection portion 13 so that the tip end portion of the connection portion 12 can be accommodated.
The cap part 13b has the same shape as the terminal part 11 and has a hollow structure so that the terminal part 11 can be accommodated.
The distal end surface of the cylindrical portion 13a and the distal end surface of the cap portion 13b are made to be on the same plane. Moreover, the connection part with the cap part 13b of the side surface of the cylindrical part 13a is notched so that the terminal part 11 can be accommodated.

The spring spring 14 (compression spring) is attached to the outer peripheral surface on the terminal side of the insulation coating of the connecting portion 12, and when the Y terminal 10 with the movable insulating cap is not attached to the stud terminal 120, the insulating cap 13b is connected to the insulating cap 13b. It is for energizing toward a tip part.
Therefore, as shown in FIG. 1B, the spring spring 14 is formed on the outer peripheral surface of the insulating coating of the connecting portion 12, on the end surface of the cylindrical portion 13 a of the insulating cap 13 and on the outer peripheral surface of the insulating coating of the connecting portion 12. It attaches between the made male screw 12a. That is, the spring spring 14 is disposed between the inner peripheral surface of the spring spring case 15 and the outer peripheral surface of the insulating coating of the connection portion 12 in a state where the connection portion 12 is fixed to the spring spring case 15.
Thus, when the Y terminal 10 with the movable insulating cap is attached to the stud terminal 120, the upper end and the lower end of the front end surface of the insulating cap 13 abut on the knob 121 of the stud terminal 120 and the outer peripheral surface of the base 122, respectively. The terminal portion 11 can be exposed from the insulating cap 13 by sliding toward the end side of the spring spring case 15 against the spring spring 14. Further, when the Y terminal 10 with the movable insulating cap is removed from the stud terminal 120, the spring spring 14 causes the upper end and the lower end of the front end surface of the insulating cap 13 to be separated from the outer peripheral surface of the knob 121 and the base 122 of the stud terminal 120. The terminal portion 11 can be accommodated in the insulating cap 13 by pressing the end surface of the cylindrical portion 13 a of the insulating cap 13 and sliding the tip end surface of the insulating cap 13 toward the terminal portion 11.

The spring spring case 15 is for accommodating the spring spring 14 attached to the outer peripheral surface of the connecting portion 12 on the end side of the insulating coating and the end portion of the cylindrical portion 13 a of the insulating cap 13.
Therefore, the spring spring case 15 has a cylindrical shape whose inner diameter decreases in two steps from the tip to the end.
That is, the inner diameter from the tip of the spring spring case 15 to the portion where the female screw is formed is approximately the same as the outer diameter of the cylindrical portion 13a so that the end portion of the cylindrical portion 13a of the insulating cap 13 can be accommodated. Has been.
In addition, the inner diameter of the portion of the spring spring case 15 where the female screw is formed is substantially the same as the outer diameter of the insulating coating of the connecting portion 12 so that a step for fixing the end of the spring spring 14 is formed. ing.
Furthermore, the inner diameter from the portion of the spring spring case 15 where the female screw is formed to the end is larger than the inner diameter of the portion of the spring spring case 15 where the female screw is formed so as to form a step that abuts against the end surface of the connecting portion 12. Is small enough to allow the electric wire 1 to be inserted.

Next, an example of the dimensions of the connecting portion 12, the insulating cap 13, and the spring spring case 15 of the Y terminal 10 with an insulating cap configured as described above will be described with reference to FIGS.
In the following description, the length refers to the length along the longitudinal direction of the insulating coating of the connection portion 12 in a state where the Y terminal 10 with the insulating cap is assembled. The thickness means the length in the vertical direction when the Y terminal 10 with an insulating cap is placed so that the upper surface and the lower surface of the Y-shaped flat cap portion 13b are parallel to the horizontal direction. Furthermore, as shown in FIG.1 (b), the length of the part exposed from the insulation coating of the connection part 12 of the terminal part 11 shall be 17 mm, and the thickness of the terminal part 11 shall be 1 mm.

  The outer diameter of the insulating coating of the connecting portion 12 is 5.4 mm, and is smaller than 5.6 mm which is the inner diameter of the cylindrical portion 13a so that the connecting portion 12 can be inserted into the cylindrical portion 13a of the insulating cap 13. ing.

The cylindrical portion 13a of the insulating cap 13 has an outer diameter of 7 mm and a wall thickness of 0.7 mm (that is, an inner diameter = 5.4 mm) so that the terminal portion 11 and the distal end portion of the connecting portion 12 can be accommodated. The length is 40 mm.
As shown in FIG. 1C, the cap portion 13b of the insulating cap 13 has a length of 20 mm and a thickness of 3 mm.

  The spring spring case 15 has a length of 42 mm, an outer diameter of 9.4 mm, a tip thickness of 1 mm, and a terminal opening diameter of 5 mm.

Next, the movement of the insulating cap 13 when the Y terminal 10 with an insulating cap is attached to the stud terminal 120 shown in FIG. 5 will be described with reference to FIGS.
In the following description, it is assumed that the stud terminal 120 is used upright with the knob 121 on the upper side.

  The worker turns the knob 121 of the stud terminal 120 to loosen it. At this time, according to the experience of the present inventor, the knob 121 and the base 122 are the most common in various usages of various stud terminals (such as one that can loosen the knob 121 only to some extent or one that the knob 121 comes off). The opening interval is about 5 mm (see FIG. 2A).

Thereafter, the worker faces the upper surface of the cap portion 13b of the insulating cap 13 upward, the upper end portion of the cylindrical portion 13a contacts the outer peripheral surface of the knob 121, and the lower end portion of the cylindrical portion 13a has the lower end portion of the base 122. The Y terminal 10 with an insulating cap is inserted between the knob 121 of the stud terminal 120 and the base 122 so as to hit the outer peripheral surface.
When the upper end portion of the front end surface of the cylindrical portion 13a hits the outer peripheral surface of the knob 121 and the lower end portion of the front end surface of the cylindrical portion 13a hits the outer peripheral surface of the base 122, the worker further inserts the Y terminal 10 with the insulating cap. The terminal portion 11 is inserted toward the conductor portion 123, and the end portion of the cylindrical portion 13a is pushed by the knob 121 at the end portion of the cylindrical portion 13a and the lower end portion of the distal end surface of the cylindrical portion 13a. Is pushed into the base 122 and enters the spring spring case 15 (see the white arrow in FIG. 2B).

  When the worker inserts the Y terminal 10 with an insulating cap until the end of the cap portion 13b comes into contact with the distal end surface of the spring spring case 15 as shown in FIG. 2 (b), the stud terminal as shown in FIG. 2 (c). The knob 121 of 120 is turned and tightened, and the terminal portion 11 is sandwiched between the knob 121 and the base 122.

Next, an insulating cap 13 ′, which is a modification of the insulating cap 13 of the Y terminal 10 with an insulating cap, will be described with reference to FIG.
Depending on the stud terminal 120, the distance between the knob 121 and the base 122 that is most open is greater than 5 mm. Therefore, even in such a stud terminal 120, the end of the cylindrical portion 13 a enters the spring spring case 15. As shown in FIG. 3, the projection plate 21 having a right triangular plate shape is attached to the top surface of the tip portion of the cylindrical portion 13a so that the tip surface of the projection plate 21 reliably contacts the outer peripheral surface of the knob 121 of the stud terminal 120. May be.
The protruding plate 21 has a bottom surface such that the front end surface (surface with an angle of 90 ° with the bottom surface) is flush with the front end surface of the cylindrical portion 13a, and the inclined surface faces the end side of the cylindrical portion 13a. It is attached to the upper surface of the tip of the cylindrical portion 13a.

Next, an insulating cap 13 ″ which is another modification of the insulating cap 13 of the Y terminal 10 with an insulating cap will be described with reference to FIG.
In order to accommodate the end portion of the cylindrical portion 13a in the spring spring case 15 more securely than the insulating cap 13 'described above, the hook plate 31 having a plurality of rod-shaped convex portions 31a as shown in FIG. It may be provided on the upper surface of the front end portion, and an operator may pull the distal end portion of the cylindrical portion 13a into the spring spring case 15 by hooking a finger on the convex portion 31a.
Note that the hook plate 31 is a flat plate having a L-shaped side surface with the lower half of the end side cut out, and the plurality of rod-shaped convex portions 31 a are formed on the upper surface of the end portion of the hook plate 31. These are arranged in parallel so that the longitudinal direction is perpendicular to the longitudinal direction of the cylindrical portion 13a.

DESCRIPTION OF SYMBOLS 1 Electric wire 10 Y terminal with movable insulation cap 11 Terminal part 12 Connection part 12a Male screw 13, 13 ', 13 "Insulation cap 13a Cylindrical part 13b Cap part 14 Spring spring 15 Spring spring case 21 Projection board 31 Hooking board 31a Protrusion part 110 Y Terminal 111 Terminal portion 112 Connection portion 120 Stud terminal 121 Knob 122 Base 123 Conductor portion

Claims (4)

It is attached to a stud terminal (120) having a columnar knob (121), a columnar base (122), and a columnar conductor (123) provided between the lower surface of the knob and the upper surface of the base. A movable insulating cap-equipped Y terminal (10),
A terminal part (11) which is a Y-shaped flat metal part;
A connecting portion (12) for connecting the terminal portion provided with a cylindrical insulating coating and attached to the tip of the insulating coating and the electric wire (1) inserted from the end of the insulating coating;
An insulating cap (13) for accommodating the terminal portion and the tip of the connecting portion when the Y terminal with the movable insulating cap is not attached to the stud terminal;
When the Y-terminal with the movable insulating cap is attached to the stud terminal and attached to the outer peripheral surface of the connecting portion on the end side of the insulating coating, the insulating cap is directed toward the tip of the insulating cap. A spring spring (14) for biasing;
A cylindrical spring spring case (15) for accommodating the spring spring attached to the outer peripheral surface of the connecting portion on the end side of the insulating coating and the end portion of the insulating cap;
When the Y terminal with the movable insulating cap is attached to the stud terminal, the upper end and the lower end of the front end surface of the insulating cap abut on the knob of the stud terminal and the outer peripheral surface of the base, respectively, and the insulating cap is applied to the spring spring. The terminal portion is exposed from the insulating cap by sliding toward the end side of the spring spring case.
A Y terminal with a movable insulating cap.   The Y terminal with a movable insulating cap according to claim 1, wherein the length from the upper end to the lower end of the front end surface of the insulating cap is made larger than 5 mm.   The protrusion board (21) attached to the upper surface of the front-end | tip part of this insulation cap so that a front-end | tip surface might become the same plane as the front-end | tip surface of the said insulation cap, The further comprising the protrusion plate (21) characterized by the above-mentioned. Y terminal with movable insulating cap.   A hook plate (31) attached to the upper surface of the tip portion of the insulating cap so that the tip surface is flush with the tip surface of the insulating cap, and having a plurality of rod-shaped convex portions (31a) on the upper surface. The Y terminal with a movable insulating cap according to claim 1, further comprising:

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