JP3002624B2 - Cord locking structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cord locking structure, and more particularly to a structure for locking a cord connected to a case for accommodating an electric component or the like.

[0002]

2. Description of the Related Art Conventionally, as a structure for locking a cord to be connected to a case containing components constituting an electric circuit, a rubber bushing is fitted to the cord, and the rubber bushing is fitted to the case. The method of making it common was. This structure using a rubber bushing has the advantage of enhancing the electrical insulation of the cord when the case is made of metal, but when the rubber bushing is not firmly fitted to the case and an external force is applied to the cord. There was a problem that it was easy to come off. Further, when the cord is composed of a single-core covering and its outer cover, the single-core may be broken even though there is no abnormality in the appearance of the cord. Also, in the case of equipment used outdoors, the rubber bushing has aged, and the cord may be disconnected due to repeated fatigue due to wind or the like.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to securely lock a cord, does not require a separate component such as a bushing rubber, and has a simple cord locking operation. It is to provide a structure. Particularly, in the case of a single-core covering and its outer cover, the entire cord including the outer cover is securely supported, and the external connection is not directly applied to the single-core portion and the electrical connection is hardly broken. Is to provide.

[0004]

The invention according to claim 1 is
And two places in the cord insertion hole provided on the substrate surface, Ri Na and a code support groove located between the two insertion openings, code supported
The groove has a substantially semicircular cross section at the bottom, and the cord support groove
Both the depth and the groove width are greater than the outer diameter of the cord to be connected.
Is small and the circuit board is
And a cord locking structure for locking a cord connected to an electric component .

[0005] The invention according to claim 2 is provided on the substrate surface.
The two cord insertion holes and the
Code support groove depth and groove width
Is smaller than the outer diameter of the cord to be connected
And the substrate is a case for housing electrical components.
Of the cord that locks the cord connected to the electrical component
The structure to be connected and the cord to be connected
After being locked in the groove, extended and then bent
This is a cord locking structure provided with a cord locking portion.

It is preferable that the cord supporting groove has a substantially semicircular cross section at the bottom and both the depth and the width of the cord supporting groove are formed smaller than the outer diameter of the cord to be connected.

[0007]

In the invention according to the first aspect , preferably, the cord to be connected is locked by the cord supporting groove, and then the cord locking portion is provided at a position where the cord is extended and then bent in a substantially right angle direction. .

[0009]

[0010]

[Function] Since two cord insertion holes are provided on the substrate surface, the cord is inserted from one surface side of the substrate to the other surface side in one insertion hole, and then from the other surface to the other surface side in the other insertion hole. The cord is inserted, and the inserted cord is supported and locked in the cord support groove located between both insertion ports,
In addition, it is possible to prevent the inserted cord from projecting to the other side.

If the depth of the cord supporting groove is formed smaller than the outer diameter of the cord, the cord inserted into the cord insertion opening is bent by the both ends of the cord supporting groove in the cord insertion opening and securely supported. Is done. If the width of the cord supporting groove is smaller than the outer diameter of the cord, the cord supporting groove clamps the outer surface of the cord, so that the cord is securely locked.

When the bottom of the cord supporting groove has a substantially semicircular cross-section, the inserted cord is supported in the supporting groove so as to fit in the supporting groove, and both the depth and the width of the cord supporting groove are equal to each other. If the outer diameter of the cord to be connected is smaller than that of the cord, the cord can be supported and locked more reliably.

After the cord to be connected is locked in the cord supporting groove, by providing a cord locking portion at a position where the cord is extended and then bent, a force for pulling out the cord is applied to temporarily prevent the cord from being connected. Even if it is pulled and moved,
Since the bent portion absorbs this movement, the cord is retained at the cord retaining portion as it is, and there is no disconnection.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings, with an example in which a solar cell element is sealed in a resin case and an output cord connected thereto is locked to the case.

FIG. 1 is a plan view of the case, FIG. 2 is a bottom view of the case, FIG. 3 is a sectional view taken along line AA of FIG. 1, FIG. 4 is a sectional view taken along line 1B-B of FIG. FIG. 6, FIG. 6 is a partially cutaway plan view of the case in which the cord is locked, FIG. 7 is a bottom view of the case in which the cord is locked, and FIG. 8 is a line AA-A of FIG. It is sectional drawing.

The transparent case 3 includes a cord locking portion 34,
It comprises a cord housing section 35 and a solar cell element housing section 36. The cord locking portion 34 is provided with two cord insertion ports 31 and 31a at predetermined intervals, and a cord support groove 32 is formed between the two insertion ports. Although the cord insertion ports 31 and 31a communicate with each other on the same plane of the case, the presence of the cord support groove 32 forms two insertion ports through which the cords are to be inserted, as is apparent in FIG. Things.

The bottom portion 33 of the cord supporting groove 32 has a substantially semicircular cross section as shown in FIG. 4, and the depth and width of the cord supporting groove 32 are slightly smaller than the outer diameter of the cord to be connected. Have been. The cord is fitted and held in the cord supporting groove 32, and the cord insertion ports 31, 31a are provided.
, Are bent and supported by both ends of the cord supporting groove 32 and locked (see FIG. 8). Cord insertion port 3
The size of the cords 31a is appropriately set in relation to the outer diameter and properties of the cord, the depth of the cord supporting groove 32, and the dimension of the groove width.

The state in which the solar cell element is sealed in the case 3 and the cord is connected and locked is shown in FIGS. The solar cell element 1 is sealed in the solar cell element accommodating portion 36 with a silicone resin, and the lead wire 11 having one end connected to the solar cell element 1 is guided to the cord accommodating portion 35 and the locking groove 3 is provided.
Locked at 9.

As can be seen in FIG. 8, the cord 2 is inserted into one insertion port 31 from the back side to the front side at the cord locking portion 34, and is continuously inserted into the other insertion port 31a from the front side. After inserting the cord, secure the necessary length for connecting the cord, and take out the cord from the cord insertion port 3
By pulling back the cord inserted in 1 to the back side,
It is supported by being fitted and held in the cord support groove 32,
Locked. Further, the cord 2 is provided with the notch 38 of the case 3.
Is also locked.

After the cord 2 is locked, the single core 2
1 is guided and locked in the cord accommodating portion 35 (see FIG. 7). Here, after the cord 2 is locked by the cord locking portion 34, the cord 2 is extended as it is, is bent in a substantially right-angle direction with a margin, and is simply inserted into the locking portion 37 of the cord housing portion 35 located in that direction. The core 21 is locked. For this reason, even if the cord 2 is pulled and moved by the force for pulling the cord 2 out of the case, the bent portion absorbs this movement, and the locking of the single core portion 21 of the cord is released. And disconnection is prevented.

The lead wire of the solar cell element 11 guided to the cord accommodating portion 35 and the cord single core portion 21 are connected by soldering or the like. After this connection, the cord accommodating portion 35 is insulated and protected by filling with a hot melt adhesive.

[0022]

As described above, according to the cord locking structure according to the present invention, the cord can be securely locked, and no separate parts such as bushing rubber are required, so that the economy is excellent. Also, the work of locking the cord is simple. In particular, in the case of a single-core covering and its outer cover, the entire cord including the outer cover is securely supported, and no external force is directly applied to the single-core portion, so that the electrical connection is hardly broken.

[Brief description of the drawings]

FIG. 1 is a plan view of a case 3. FIG.

FIG. 2 is a bottom view of the case 3. FIG.

FIG. 3 is a sectional view taken along the line AA of FIG. 1;

FIG. 4 is a sectional view taken along line BB of FIG. 1;

FIG. 5 is a sectional view taken along the line CC in FIG. 1;

FIG. 6 is a partially cutaway plan view of the case 3 in a state where a cord is locked.

FIG. 7 is a bottom view of the case 3 in a state where the cord is locked.

FIG. 8 is a sectional view taken along the line 1A-A of FIG. 1 in a state where the cord is locked.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Solar cell element 2 Cord 21 Single core part of cord 3 Case 31 Cord insertion opening 32 Cord supporting groove 33 Bottom of cord supporting groove 34 Cord locking part 35 Cord accommodating part 36 Solar cell element accommodating part

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H05K 7/00

Claims (3)

(57) [Claims] 1. A code insertion opening of two places provided on the substrate surface, Ri Na <br/> and a code support groove located between the two insertion openings, code support groove bottom portion thereof a substantially Make a semicircle,
Both the depth and width of the cord support groove
Board is formed smaller than the outer diameter of the
Is a case that accommodates
A cord locking structure for locking. 2. Insertion of two cords provided on the substrate surface
Mouth and a cord support groove located between both insertion holes
Either the depth or width of the cord support groove is
Is formed smaller than the outer diameter of the cord to be
Is the case that houses the electrical components and is connected to the electrical components
Cord locking structure that locks the
After the cord to be continued is locked in the cord support groove,
A cord lock is provided at the position where the cord is extended and bent
Cord locking structure. 3. After the code to be connected is locked in code support groove, extended formed by providing an engagement portion of the code in the bent position from claim 1, wherein the code locking structure .