JPH0785907A - Protection case for connection of cable terminal - Google Patents

Abstract

PURPOSE:To simplify the work and lighten the burden on a junction point, and enable the downsizing, and enable the accommodation of cables different in size by arranging the constitution such that the terminals are hooked on a stopper piece by providing the stopper piece to be inserted between cables, on the bottom wall of a protection case body. CONSTITUTION:The terminals of the conductors 103 of a plurality of cables 101 are bundled in a body into the shape of a block rectangular in cross section. The protection case body 112 is provided longitudinally with a terminal storage part 130 for accommodating the terminal of the cable 101, and a rectangular plate-shaped stopper piece 140 is projected at the bottom wall near to its opened one side. When the terminal of the cable 101 is accommodated in a case 110, the stopper piece 140 is inserted between a plurality of cables 101, and the cable is retained not to come off.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protective case for a wire terminal connecting portion.

[0002]

2. Description of the Related Art When wires are electrically connected to each other by bundling and joining conductor ends of a plurality of wires, the terminal connecting parts are generally housed in a protective case made of an insulating material. To protect.

Conventionally, as this protective case, an L-shaped fixed type and a strain relief type as disclosed, for example, in Japanese Utility Model Laid-Open No. 4-24266 are known.

An example of the former is shown in FIGS. In the figure, 1 is an electric wire, 3 is a conductor part, and 5 is a terminal connection part.
The ends of the conductor portions 3 of the plurality of electric wires 1 are bundled and joined to each other by means such as welding or thermocompression bonding,
They are electrically connected to each other.

The protective case 10 has an L-shaped bent terminal accommodating portion 20 therein, and has a box-shaped case body 12 whose upper surface and one side surface are open, and is rotatable on one side edge of the case body 12. And a lid 14 that is hinge-jointed to close the upper surface of the case body 12. The side edge of the lid 14 is provided with a lock portion 18 that locks with the engaging portion 16 of the case body 12 when the lid 14 is in the closed state.

When the terminal connecting portion 5 is accommodated in the protective case 10, the rigid terminal connecting portion 5 is used as the terminal accommodating portion 20.
Bend along and store. Then, the bent terminal connecting portion 5 becomes a resistance, and the protective case 10 is held at the terminal of the electric wire 31 against the tensile force.

The latter example is shown in FIGS. 19 and 20.
In this method, the electric wires 31 are flatly arranged in a horizontal row,
The ends of the conductor portion 33 are bundled and joined. The protective case 40 includes a case body 42 and a lid 44, and a lock portion 46 that locks the upper surface of the case body 42 in a closed state is provided at a side edge portion of the lid 44. Case body 4
The inside of 2 is a terminal accommodating portion 50, and a recessed portion 52 which is lowered one step is provided on the inner bottom surface thereof, and the inner surface of the lid 44 corresponding to the recessed portion 52 is provided with the recessed portion 5 when the lid 44 is closed.
A convex portion 54 that penetrates into the inside 2 is provided.

When the terminal connecting portion 35 is accommodated in the protective case 40 and the lid 44 is closed, the convex portion 54 is inserted into the concave portion 52 so that the electric wire 31 is forcibly bent or bent. The curved or bent portion serves as resistance, and the protective case 40 is held at the end of the electric wire 31 against the tensile force.

[0009]

By the way, since the former protective case 10 accommodates the rigid terminal connecting portion 5 by forcibly bending it, it is difficult to perform the work, and the burden on the joint is large. There is a problem that the joint surface is easily peeled off.

The latter protective case 40 is made up of the electric wire 31.
Since it is necessary to store them side by side, there is a problem that the width becomes large. Furthermore, when accommodating electric wires of different sizes, the recess 5 is
There is a problem in that the gap e between the 2 and the convex portion 54 must be changed, and a protective case must be prepared for each wire size.

In view of the above circumstances, the present invention provides a protective case for an electric wire terminal connecting portion which is easy to work, has a small load on a joint, can be downsized, and can accommodate electric wires of different sizes. The purpose is to

[0012]

The invention according to claim 1 is
A box-shaped case body having a terminal housing portion for housing a terminal connection portion formed by joining the conductor portions of a plurality of electric wires in a bundle, and a lid for closing the upper surface of the case body. In the protective case of the electric wire terminal connecting portion, the stopper piece inserted between the plurality of electric wires at the time of accommodating the electric wires is provided on the bottom wall in the vicinity of the opened one side surface of the case main body.

According to a second aspect of the present invention, there is provided a protective case for an electric wire terminal connecting portion according to the first aspect, wherein the inner surface of the lid is
An electric wire pressing piece for pressing the electric wire when the lid is closed halfway is provided.

According to a third aspect of the present invention, there is provided a protective case for an electric wire terminal connecting portion according to the first aspect, wherein the inner surface of the lid is:
It is characterized in that projections are provided to push the electric wire on the stopper piece to both sides of the stopper piece.

According to a fourth aspect of the present invention, the terminal connecting portion accommodating portion is formed in which the conductor connecting ends of a plurality of electric wires are bundled and joined together, and both sides and upper surfaces of the electric wires along the axial direction are opened. And a lid having a wall portion that closes one side of the terminal connecting portion accommodating portion along the axial direction of the electric wire in a state where the upper portion of the case main body is closed, and the case main body includes a plurality of lids when accommodating the electric wires. It is characterized in that a stopper piece inserted between the electric wires of the book is provided.

[0016]

When the terminal of the electric wire is to be housed in the protective case of the first aspect of the invention, the terminal connecting portion is located at the back, the electric wire is pulled out from the open side surface, and the stopper piece is inserted between the electric wires. By doing this, when a tensile force is applied to the wire, the end connection part of the wire is caught by the stopper piece,
The omission is blocked.

In the protective case of the second aspect of the present invention, the electric wire pressing piece presses the electric wire while the lid is being closed, so that the electric wire once housed is prevented from jumping out. Also,
Since the electric wire end being accommodated is pressed down, rattling is also prevented.

In the protective case according to the third aspect of the present invention, when the lid is closed, the wire pushed by the projection on the stopper piece is pushed to the side of the stopper piece, so that the wire is reliably caught by the stopper piece.

When the end of the electric wire is accommodated in the protective case of the invention of claim 4, the electric wire is accommodated in the case main body with the terminal connecting portion protruding from one side face which is open, and the stopper piece is inserted between the electric wires. . By doing so, it becomes easy to widen the space between the electric wires, and the stopper piece can be easily inserted between the electric wires. Next, the terminal connecting portion is moved onto the case body by pulling the electric wire. Then, the top of the case body is closed by the lid. In this case, even if a tensile force acts on the electric wire, the terminal connecting portion of the electric wire is caught by the stopper piece, and the terminal connecting portion is prevented from falling out of the protective case.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a protective case for an electric wire terminal connecting portion according to the present invention will be described below with reference to the drawings.

First Embodiment FIG. 1 shows a first embodiment of the present invention. (A) shows the state before accommodating the end of the electric wire, and (b) shows the state before accommodating the end of the electric wire and covering.

In the figure, 101 is an electric wire, 103 is a conductor portion, and 105 is a terminal connecting portion. Multiple wires 101
Are bundled at the ends of the conductor portions 103 and integrally joined in a block shape having a rectangular cross section.

The protective case 110 is a rectangular box-shaped case body 1 whose bottom and three sides are closed and whose top and one side are open.
12 and a hinge 1 on one long side edge of the case body 112.
And a lid 116 that is openably and closably connected via 14. The lid 116 includes a case body 112 by the lid 116.
A lock portion 120 that engages with the lock portion 118 on the case body 112 side is provided in a state where the upper surface of the case is closed.
The case body 112 has the electric wires 10 along its longitudinal direction.
A terminal accommodating portion 130 for accommodating one terminal portion is provided, and a plate-shaped stopper piece 140 having a rectangular shape as viewed from the side surface is provided on a bottom wall close to one open side surface thereof. There is. The height of the stopper piece 140 matches the height of the side wall.

When the end of the electric wire 101 is accommodated in the protective case 110, the stopper piece 14 is provided between the plurality of electric wires 101.
0 is inserted, and the electric wire is divided into left and right as shown in FIG. Therefore, when the electric wire 101 is pulled in this state, the terminal connecting portion 105 is caught by the stopper piece 140, and the electric wire 101 is held so as not to come off.

In the protective case 110 of this embodiment, since it is not necessary to store the electric wires in a line, the width dimension can be reduced by 2f as compared with the conventional protective case 40, as shown in FIG. , Can be miniaturized.

A tensile strength test was carried out by accommodating the ends of the electric wires in the protective case 110, and it was found that the strength was sufficiently exceeded over the generally required strength. FIG. 4 is an explanatory diagram of the strength test.

In the strength test, as shown in (a), the protective case 110 and the electric wire 101 were pulled in opposite directions to measure the strength at breakage. As a sample, as shown in (b), the plurality of electric wires 101 are evenly divided and the stopper piece 1
The one shown in (a) in which 40 was inserted and the one shown in (b) in which only one electric wire was hooked on one side were used. As a result, as shown in (c), the measured tensile load exceeded the required strength in all the samples. As a result, it can be confirmed that the protective case 110 of the present embodiment can guarantee tensile strength equal to or higher than that of the conventional product.

Second Embodiment FIG. 5 shows a second embodiment of the present invention. (A) shows the state before accommodating the end of the electric wire, and (b) shows the state before accommodating the end of the electric wire and covering.

The protective case 210 of the second embodiment has an electric wire pressing piece 150 protruding from the inner surface of the lid 116 of the protective case of the first embodiment. The wire pressing piece 150 is located at a position where it comes into contact with the terminal connecting portion 105, and projects vertically from the inner surface of the lid 116. The length is slightly smaller than the inner width dimension of the case main body 112, and its base end has flexibility.

When the electric wire 101 is housed in the case main body 112 and the lid 116 is closed, the electric wire pressing piece 150 blocks the upper portion of the terminal connecting portion 105 of the electric wire 101 as shown in FIGS. Hold so that it does not exist. Therefore, the lid 116 can be closed while stably holding the electric wire 101 once accommodated, which simplifies the work. Also,
When the lid 116 is closed to the end, the wire pressing piece 150 elastically presses the terminal connecting portion 105 from above as shown in FIG. 8, so that the terminal connecting portion 105 can be prevented from rattling. .

Third Embodiment FIGS. 9, 10 and 11 show a third embodiment of the present invention. FIG. 9 shows a state before housing the end of the electric wire, and FIGS. 10 and 11 show a state before housing the end of the electric wire and covering the same.

The protective case 310 of the third embodiment is provided with a stopper piece 340 in the shape of a right triangle in place of the stopper piece of the protective case of the first embodiment, and the stopper piece 340 is hooked on the inner surface of the lid 116. The protrusions 360 for pushing the electric wire 101 into both sides of the stopper piece 340 are provided.

In the stopper piece 340, the end surface facing outward is formed as a slope, the end surface facing inward is formed as a surface perpendicular to the bottom wall, and the apex is sharply pointed. Also, the protrusion 360
Is a triangular pyramid, and one of the three sides is
As shown in FIG. 3, the stopper piece 34 is formed as a surface perpendicular to the inner surface of the lid 116, and when the other two side surfaces close the lid 116.
It is a surface that faces both sides of 0 diagonally. And
The apex is located exactly on the center line of the stopper piece 340. Note that the inner end surface of the stopper piece 340 and the vertical surface of the protrusion 360 are in a positional relationship such that they substantially coincide with each other.

When the end of the electric wire 101 is accommodated in the protective case 310 having such a structure and the lid 116 is closed, as shown in FIG. 12, the protrusion 360 pushes the electric wire 101 on the stopper piece 340 away and separates it. , Stopper piece 3
Push on both sides of 40. Therefore, by simply closing the lid 116, the electric wires 101 can be appropriately distributed without requiring extra force, and the housing operation becomes simple. Also, because the stopper piece 340 has a triangular shape,
The distribution effect of electric wires is promoted.

Fourth Embodiment Next, a fourth embodiment will be described with reference to FIGS. 14 to 16.

As shown in FIG. 14, the protective case 410 of this embodiment comprises a case body 412 whose both sides and an upper surface along the axial direction of the electric wire are open, and a lid 414 which closes the upper part of the case body 412. . The case body 412 includes a bottom wall 416 having a substantially triangular shape on one side, and side walls 418 a and 418 b provided on both sides of the bottom wall 416. And
On one side of the bottom wall 416, a substantially triangular terminal connection portion accommodating portion 420 that gradually narrows toward the tip is formed, and on the other side, an electric wire accommodating portion 422 that accommodates an electric wire is formed. Both sides and the upper surface of the terminal connecting portion accommodating portion 420 along the axial direction of the electric wire are open. Further, the side walls 418a and 418b are formed on both sides of the wire housing portion 422. The side wall 418a, 418b is located in the middle of these side walls 418a, 418b, and the side wall 418a,
From the same height as 418b, a triangular stopper piece 424 is provided so as to be inclined downward toward the opening side.

Further, locking projections 426 and 426 are provided on the one side wall 418a so as to project from the outer periphery. These locking protrusions 426, 426 are inserted and locked in locking holes 436, 436 provided in a lid 414 described later. Further, the lid 41 is attached to the upper end of the other side wall 418b via a hinge 428.
4 are integrally formed.

The lid 414 is the bottom wall 41 of the case body 412.
6, a bottom wall 430 having substantially the same shape as that of No. 6, and a side wall 432 formed at the outer peripheral end except the side end to which the hinge 428 is connected. The side wall 432 has three wall portions 432 corresponding to the outer diameter shape of the terminal connection portion accommodating portion 420 of the case body 412.
a, 432b, 432c and a side wall 434. Then, in the state where the upper part of the case body 412 is closed, the wall portions 432a and 432c close both sides in the width direction of the terminal connection portion accommodating portion 420, and the wall portion 432b extends along the axial direction of the electric wire. The open portion of 420 is closed. Further, the side wall 434 is formed with rectangular locking holes 436 and 436 into which the above-described locking protrusions 426 and 426 are inserted and locked.

To accommodate the terminal connecting portion 438 in the protective case 410, first, as shown in FIG. 16A, the terminal connecting portion 438 is inserted into the bottom wall 4 of the case body 412.
The stopper piece 424 is inserted between the plurality of electric wires 101 in a state of protruding from 16. In this case, the terminal connection unit 4
When trying to insert the stopper piece 424 between the electric wires 101 immediately before 38, it is difficult to insert the stopper piece 424 immediately before the electric wires are spread out. However, at the position away from the terminal connecting portion 438, the electric wire 101 is easily opened, and the stopper piece 4
It is easy to insert 24 between the electric wires 101.

A stopper piece 424 is provided between the electric wires 101.
16B, the terminal connecting portion 438 causes the terminal connecting portion accommodating portion 420 of the case body 412 to be inserted.
The electric wire 10 is positioned so as to be positioned above (in the direction of arrow a), that is, in the direction in which the terminal connecting portion 438 approaches the stopper piece 424.
Pull 1 to move. At this time, the stopper piece 42
Since 4 is formed in a triangular shape, it can be easily moved between the electric wires 101.

The terminal connecting section 438 is the terminal connecting section accommodating section 42.
After moving to 0, the lid 414 is rotated to close the upper part of the case body 412 as shown in FIG. In this case, the side wall 418 is attached to the locking holes 436, 436 of the side wall 434.
The locking projections 426, 426 of the side wall 41 are inserted and locked.
8, 434 are overlapped with each other, and the terminal connection portion accommodating portion 42
The open portion of 0, that is, one side along the axial direction of the electric wire and both sides in the width direction are wall portions 432a, 432b, 432.
closed by c. As a result, the terminal connection portion 438 can be housed and protected in the protective case 410.

According to this embodiment, since the stopper piece 424 is inserted between the electric wires 101 at a position apart from the terminal connecting portion 438, the electric wires 101 can be easily opened and the stopper piece 424 can be easily inserted. You can This simplifies the work of accommodating the terminal connection unit 438. Also,
As in the first embodiment, it is not necessary to forcibly bend and accommodate the terminal connecting portion, so that the load on the joint is small.

Further, since both sides of the case body 412 along the axial direction are opened and the terminal connecting portion 438 is moved in the axial direction to be housed in the case body 412, the case body 412 can be shortened as a whole. It is possible to reduce the size. Also, electric wires of different sizes can be accommodated.

It should be noted that the terminal connecting portion 438 is the protective case 41.
In the state of being housed in 0, the force applied to the case body 412 is the tensile force to the stopper piece 424 and the case body 4
The force for expanding the mouth to the opening formed by 12 and the lid 414 is mainly, and no force is applied to the walls 432a and 432c. Therefore, the wall portions 432a and 432c may be provided on the case body 412.

[0045]

As described above, according to the first aspect of the invention, the bottom wall of the case body is provided with the stopper piece inserted between the electric wires, and the end connecting portion of the electric wire is hooked on the stopper piece. With this configuration, it is not necessary to forcibly bend the terminal connection portion to accommodate the terminal connection portion, and the accommodation work can be facilitated.
Further, since the terminal connecting portion is not unduly deformed, the risk of peeling of the joint portion is reduced. Further, since it is not necessary to store the electric wires side by side only by accommodating the electric wires so that the stopper pieces are inserted between the electric wires, the width dimension of the protective case can be reduced. Further, since the structure is not such that the electric wire is sandwiched between the concave portion and the convex portion, it is possible to accommodate electric wires of different sizes.

Further, according to the second aspect of the invention, since the electric wire pressing piece is provided on the lid, the electric wire once housed does not jump out, and the housing work can be simplified. In addition, since the wire end that is being accommodated can be pressed by the wire pressing piece, rattling of the wire in the case can also be prevented.

According to the third aspect of the present invention, the lid is provided with the projection for pushing the electric wire on the stopper piece to the side of the stopper piece. Both simplification and increase in tensile strength can be achieved.

Further, according to the invention of claim 4, the wire is housed in the case body with the terminal connecting portion protruding from the open side surface, and after the stopper piece is inserted between the wires,
Since the terminal connecting portion is accommodated in the case body by pulling the electric wire, the space between the electric wires can be easily widened, and the stopper piece can be easily inserted between the electric wires to improve workability. Further, since the terminal connecting portion is accommodated in the terminal connecting portion accommodating portion by pulling the electric wire, the case main body can be shortened as a whole and the size can be reduced.

[Brief description of drawings]

1A and 1B are explanatory views of a first embodiment of the present invention, in which FIG. 1A is a perspective view showing a state in which a terminal connecting portion is about to be accommodated in a protective case of the embodiment, and FIG. 1B is a protective case of the embodiment. FIG. 7 is a perspective view showing a state in which the terminal connecting portion is housed in the housing and the lid is about to be closed.

FIG. 2 is a plan view showing a state in which the terminal connecting portion is housed in the protective case of the first embodiment of the present invention.

FIG. 3 is an explanatory diagram showing a difference between the first embodiment of the present invention and a conventional example.

FIG. 4 (a) is an explanatory view of a method of a tensile strength test of the first embodiment of the present invention, (b) is an explanatory view of a sample, (c).
Is a graph of test results.

5A and 5B are explanatory views of a second embodiment of the present invention, in which FIG. 5A is a perspective view showing a state in which a terminal connecting portion is about to be accommodated in the protective case of the embodiment, and FIG. 5B is a protective case of the embodiment. FIG. 7 is a perspective view showing a state in which the terminal connecting portion is housed in the housing and the lid is about to be closed.

FIG. 6 is a perspective view showing a state in which the terminal connecting portion is accommodated in the protective case of the second embodiment of the present invention and the lid is closed halfway.

7 is a cross-sectional view taken along arrow VII of FIG.

FIG. 8 is a sectional view similar to FIG. 7, showing a state in which the terminal connecting portion is housed in the protective case of the second embodiment of the present invention and the lid is completely closed.

FIG. 9 is an explanatory view of the third embodiment of the present invention, and is a perspective view showing a state in which the terminal connecting portion is about to be accommodated in the protective case of the embodiment.

FIG. 10 is a perspective view showing a state in which the terminal connecting portion is accommodated in the protective case of the third embodiment of the present invention and the lid is being closed.

FIG. 11 is a side view of the state of FIG. 10 viewed from the direction in which the electric wire extends.

FIG. 12 is a side view showing a state in which the terminal connecting portion is accommodated in the protective case of the third embodiment of the present invention and the lid is about to be closed.

FIG. 13 is a side sectional view showing the relationship between the protrusion and the stopper piece when the lid is closed on the protective case of the third embodiment of the present invention.

FIG. 14 is a perspective view showing a protective case of a fourth embodiment of the present invention.

FIG. 15 is a perspective view showing a protection case according to a fifth embodiment of the present invention and showing a state in which a terminal connecting portion is accommodated.

FIG. 16 shows a protective case of the fifth embodiment of the present invention,
(A) is a plan view showing a state before accommodating a terminal connecting portion,
(B) is a plan view showing a state in which a terminal connecting portion is accommodated.

FIG. 17 is a perspective view showing a state in which a terminal connecting portion is about to be housed in a conventional protective case.

FIG. 18 is a plan view showing a state in which a terminal connecting portion is housed in a conventional protective case.

FIG. 19 is a perspective view showing a state in which the terminal connecting portion is about to be accommodated in another conventional protective case.

FIG. 20 is a side sectional view showing a state in which a terminal connecting portion is housed in another conventional protective case.

[Explanation of symbols]

 101 wire 103 conductor part 105,438 terminal connection part 112,412 case body 110,210,310,410 protective case 116,414 lid 140,340,424 stopper piece 150 wire holding piece 360 protrusion 420 terminal connection part accommodation part

Claims (4)

[Claims] 1. A box-shaped case body having a terminal housing portion for housing a terminal connection portion formed by joining conductor portions of a plurality of electric wires in a bundle, and an upper surface and one side surface thereof, and an upper surface of the case body. In a protective case of an electric wire terminal connecting portion composed of a lid for closing the electric wire, a stopper piece inserted between the plural electric wires at the time of accommodating the electric wire is projectingly provided on a bottom wall near the opened one side surface of the case main body. A protective case for the electric wire terminal connection part. 2. The protective case for the electric wire terminal connecting portion according to claim 1, wherein an electric wire pressing piece for pressing the electric wire when the lid is closed halfway is provided on the inner surface of the lid. A protective case for the electric wire terminal connection part. 3. The protective case for the electric wire terminal connecting portion according to claim 1, wherein a protrusion is provided on the inner surface of the lid for pushing the electric wire on the stopper piece to both sides of the stopper piece. A protective case for the characteristic wire terminal connection. 4. A case main body having a terminal connection portion accommodating a plurality of conductors of a plurality of electric wires bundled and joined together, and having terminal connection portion accommodating portions open on both sides and an upper surface in the axial direction of the electric wire, A lid having a wall portion that closes one side of the terminal connection portion accommodating portion along the axial direction of the electric wire in a state where the upper portion of the case main body is closed; A protective case for an electric wire terminal connecting portion, which is provided with a stopper piece to be inserted in the.