JP2001144464A - Cord fixing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cord fixing structure which can inexpensively fix distributing cords passed through the enclosure of an electronic apparatus by using parts, such as the bush, etc., regardless of the kinds and the number of the used cords. SOLUTION: A cord fixing structure is constituted in such a way that a through hole is made through the enclosure of the electronic apparatus for passing distributing cords. The distributing cords are fixed by means of a cord fixture provided with a recessed section for fixing the distributing cords, and a locking section larger than the through hole of the enclosure by using a bonding band while the locking section is fixed by the enclosure and an auxiliary enclosure contained in the enclosure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for fixing an electric wiring cord used in a small-sized electric or electronic apparatus, and more particularly to a device penetrating through a housing and being limited in the number and diameter of the cord. The present invention relates to a cord fixing structure that enables efficient and efficient work.

[0002]

2. Description of the Related Art When a main unit of a conventional small electric or electronic device, for example, a water heater or an air conditioner is connected to a housing of an operation unit by a wiring cord, the cord is connected by a connector as a first means. As a second method, there is a method of connecting the main body and the operation unit by directly connecting the cord. When the cord is directly exposed, a method of fixing the cord with a bush has been proposed. The bush includes a bush main body and a bush upper lid. The structure of the bush main body includes a locking portion for locking with the housing, a tapered portion for facilitating entry into the through hole of the housing, and a U-groove for embedding the wiring cord. The structure of the bush lid is shaped to be buried in the U-groove of the bush main body, and presses a locking portion for locking with the housing, a tapered portion for facilitating entry into the through hole of the housing, and a wiring cord. It is composed of a pressing part. Next, attachment to the outer wall of the housing will be described. The outer wall of the housing has a through hole for attaching a bush. The wiring cord is inserted into the through hole, the wiring cord is buried in the U-shaped groove of the bush body, and the pressing portion of the bush upper lid is sandwiched between the wiring cords from above,
Fix by pressing. The bush body sandwiching the wiring cord, and the pressed bushing upper lid are inserted into the through holes of the outer wall of the housing from the outside of the housing with the tapered portion of the bush body at the head, and stopped at the locking portion of the bush, on the outer wall of the housing. Fixed.

FIG. 6 is an installation diagram of an embodiment showing a conventional cord fixing tool. A configuration in a case where the wiring cord 2 is to be fixed to the outer wall 4 of the housing by the bush body 31 will be described. First, FIG. 7 which is an exploded view of an embodiment showing the cord fixing tool of FIG. 6 will be described.

In FIG. 7, a bush is a bush body.
31 and a bush upper cover 37. Bush body 31
Is composed of a locking portion 36 serving as an engagement portion between the U-shaped groove 34 and the housing outer wall 4, and a taper portion 38 inserted into the insertion portion of the housing. The bush upper cover 37 has a shape that fits into the U-shaped groove 34 of the bush body 31,
An engaging portion 36 serving as a fitting portion with the housing outer wall 4, a tapered portion 38 inserted into the insertion portion of the housing, and a pressing portion 32 for holding down the cord.
It is composed of

Next, a method for fixing the bush body 31 and the wiring cord 2 will be described. The wiring cord 2 is embedded in the U-shaped groove 34 of the bush body 31. The lid is closed while being pressed by the bush upper lid 37 from above the embedded wiring cord 2.

Next, a bush upper cover 37 is attached to the bush body 31.
A method for assembling the cable and the wiring cord 2 into the housing outer wall 4 will be described. In FIG.
Has a through hole 6 slightly larger than the locking portion 36 of the bush body 31
Is provided. The tapered portion 38 of the bush body 31 in which the wiring cord 2 is incorporated into the through hole 6 from the outside of the housing is inserted from the outer wall 4 of the housing. At this time, wiring cord 2 is
It shall be inserted through the through hole 6 of 4. The insertion of the bush body 31 inserted from the tapered portion 38 is stopped at the locking portion 36 and fixed. The material of the bush body 31 and the bush upper lid 37 is made of resin or rubber, and is fixed to the through hole 6 of the housing outer wall 4 by press-fitting. The bush main body 31 and the bush upper lid 37 do not pass through the through hole 6 of the housing outer wall 4,
The size of the hole diameter of the through hole 6 is set, and the locking portion 36
The bush main body 31 and the bush upper cover 37 are locked by the grooves.

As described above, the bush body 31 and the bush upper cover 37 are fixed to the through holes 6 of the housing outer wall 4 so that the wiring cord 2 can be pulled inside or outside the housing outer wall 4. 2 does not come off and is integrally fixed to the housing outer wall 4.

[0008]

In the above-described mounting operation, the bush body 31 can be fixed to the outer wall 4 of the housing by sandwiching the wiring cord 2, but usually, the bush body 31 is a different product. Each bushing must be manufactured, which increases the number of types of parts and reduces the efficiency in managing the bush body 31. I have.

In this case, the outer diameter of the bush body 31 and the thickness of the cord are limited, and the bush body 31 having a desired size cannot always be found.

Specifically, if the number of wiring cords 2 is large,
When the bush body 31 is inserted into the through hole 6, the bush body 31 is swelled from the hole of the through hole 6 so that the bush body 31 is hard to enter, or the wiring cord 2 is pressed by the bush upper cover 37, so that the cord coating is damaged. Occurs.

On the other hand, when the number of the wiring cords 2 is small, the bush main body 31 is easily fitted, but the gap between the wiring cord 2 and the bush main body 31 weakens the pressing of the bush upper cover 37, and the wiring cord 2 Is pulled out, the bush body 31 comes out of the insertion hole of the outer wall 4 of the housing. Therefore, when selecting the bush main body 31 based on the number of the wiring cords 2, it is necessary to perform a thorough study and confirmation by experiment.

When a commercially available product cannot be used, the bush body 31 and the bush upper cover 37 are manufactured. However, the time and effort required for manufacturing a mold for the molded product and the cost of the mold are increased, or the molded product is not used. A problem arises in that the dimensional accuracy of the hole diameter of the outer wall 4 of the housing for locking a certain bush body 31 becomes complicated.

An object of the present invention has been made in view of the above-mentioned problems, and provides an inexpensive cord fixing tool with good work efficiency.

[0014]

SUMMARY OF THE INVENTION In a structure for connecting a housing to a housing of an electronic apparatus by using a cord, a through hole for inserting the cord into the housing is provided, and an uneven portion for fixing the cord and the housing are provided. A cord fixing tool provided with a locking portion larger than the through hole of the body, the locking portion is fixed by a casing and an auxiliary casing in the casing, and the cord fixing tool fixes the cord by a binding band; It is characterized by having a unit for preventing the binding band from coming off.

[0015]

In FIG. 1, the wiring cord 2 is inserted into the through hole 6 of the housing outer wall 4, and the cord fixing tool 1 is inserted into the through hole 6 from the inside of the housing until the wire fixing tool 1 is locked from the narrow end. The cord fixing tool 1 and the wiring cord 2 are bound at a predetermined position, and the wiring cord 2 is fixed from the outer periphery with the binding band 3. A small gap is attached to the inside of the housing so that the cord fixing tool 1 inside the housing is not inserted inside by the auxiliary housing 5.

By the above operation, the wiring cord 2 is integrated with the housing outer wall 4 through the cord fixing tool 1,
2 can be prevented.

[0017]

Embodiments of the present invention will be described below. FIG. 1 is a mounting view of a cord fixing tool according to a first embodiment of the present invention, and FIG. 2 is a perspective view of the cord fixing tool of FIG.

The structure of the cord fixing device 1 according to the first embodiment of the present invention will be described with reference to FIG. In FIG. 2, the cord fixing tool 1 is formed by pressing a resin or metal flat plate. The shape of the cord fixing tool 1 is
An engaging portion 21, which is made up of concave and convex portions symmetrical with the top and bottom, and which comes into contact with the outer wall 4 of the housing from one end, a through portion 22 between the outer wall 4 of the housing,
A concave portion 23 for fixing the wiring cord 2 from the outer periphery with the binding band 3,
It is formed from the pull-out preventing portion 24 of the binding band 3 at the other end. The length of the locking portion 21 is such that it does not pass through the through hole 6 of the housing outer wall 4, and the plate thickness may be about 0.5 to 2 mm.

The mounting configuration of the first embodiment will be described. In FIG. 1, which is an installation diagram of a cord fixing tool according to a first embodiment of the present invention, an outer casing wall 4 and an auxiliary casing 5 are shown.
Are provided with through holes 6 to be inserted in the same direction. The wiring cord 2 is inserted through the through hole 6. Outer wall of housing 4
The cord fixing tool 1 is inserted between the auxiliary case 5 and the auxiliary case 5.

Next, a method of mounting the cord fixing tool 1 will be described. In FIG. 1, the wiring cord 2 is inserted into the through hole 6 of the housing outer wall 4 and the auxiliary housing 5, and the cord fixing tool 1 is prevented from coming off from the inside of the housing to the through hole 6 outside the housing. Insert with part 24 at the top. The cord fixing tool 1 hits the locking portion 21 and locks when the insertion portion 22 enters the through hole 6. Next, the wiring cord 2 and the cord fixing tool 1 are fixed with a binding band 3 from the outer periphery of the wiring cord 2. In fixing, the length of the wiring cord 2 is fixed at a desired position, and the wiring cord 2 is brought into close contact with the plane side of the cord fixing tool 1. In a state where the wiring cord 2 is in close contact, the binding band 3 is inserted into the groove of the concave portion 23 of the cord fixing tool 1.
And fix the wiring cord 2 from the outside. Lastly, in order to fix the locking portion 21 of the cord fixing tool 1, the auxiliary housing 5 is fixed to one end of the locking portion 21 of the cord fixing tool 1 to prevent the cord fixing tool 1 from coming off. .

As a modified example of the above-mentioned auxiliary housing 5, although not shown, the auxiliary housing 5 may use resin inside the housing,
It can also be mounted outside the housing using a separate mounting tool. In addition, a printed circuit board mounted inside the housing can be used as the auxiliary housing 5. The auxiliary housing 5 may be fixed to the end face of the locking portion 21 of the cord fixing tool 1, or the same effect can be obtained by attaching the auxiliary housing 5 and the cord fixing tool 1 with a slight gap. Can be

In the above example, the wiring cord 2 is equally distributed to the cord fixing tool 1 as shown in the front view of FIG. 1, and the wiring cord 2 is fixed to the cord fixing tool. When the tool 1 is brought into close contact in the surface direction and fixed with the binding band 3, the wiring cord 2 is securely fixed to the cord fixing tool 1, but the wiring cord 2 is wired to either the left or right surface of the cord fixing tool 1. However, the same effect can be obtained by fixing with the binding band 3.

Next, a modified example of the cord fixing tool 1 will be described. FIG. 3 shows a cord fixing tool 1 having a T-shape.
3. The detachment prevention part 24 is integrated with the insertion part 22.

FIG. 4 shows that the cord fixing tool 1 is composed of an engaging portion 21, an insertion portion 22, and a pull-out preventing portion 24.
Is removed, and the insertion portion 22 is fixed together with the wiring cord 2 by the binding band 3 shown in FIG.

FIG. 5 shows a case in which the locking portion 21 of the cord fixing tool 1 is formed as a semicircular projection in order to make the length as short as possible. The mounting method is the same as that of FIG.

The modifications have been described above with reference to FIGS. 3 to 5.
Other than the above-described embodiment, any cord fixing tool 1 can be used as long as the cord fixing tool 1 is created based on the idea that it stops at the through hole in the outer wall of the housing, bundles and fixes the wiring cords, and does not come off even when pulled from the outside of the housing. At this time, the shape of the cord fixing tool 1 is the shape of the water heater, the body of the air conditioner and the housing of the operation unit,
It may be determined in consideration of the mounting strength, the workability of the mounting, the price, and the like. Further, in the above embodiment, among the electronic apparatus, the water heater, the main body and the operation unit of the air conditioner have been described as examples, but the present invention is applicable if the wiring cord 2 is fixed using a bush. It can be developed and used according to the contents described above.

[0027]

According to the above configuration, the wiring cords 2 having different thicknesses and the number of the wiring cords 2 can be inserted into the through holes 6 of the housing outer wall 4 even if the number of the wiring cords 2 is changed during the design. If so, you can securely fix the wiring code 2,
It has enough tensile strength to withstand actual use. Further, the tolerance of the hole diameter of the through hole 6 is sufficient with a general tolerance, and the cord fixing tool 1 can be manufactured by a punching die, so that it can be provided at a low cost in terms of price.

[Brief description of the drawings]

FIG. 1 is a view showing an installation of a cord fixing tool according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the cord fixing device of FIG. 1;

FIG. 3 is a perspective view of a cord fixing tool according to a second embodiment of the present invention.

FIG. 4 is a perspective view of a cord fixing device according to a third embodiment of the present invention.

FIG. 5 is a perspective view of a cord fixing tool according to a fourth embodiment of the present invention.

FIG. 6 is an installation view of an embodiment showing a conventional cord fixing device.

FIG. 7 is an exploded view of the embodiment showing the cord fixing device of FIG. 6;

[Explanation of symbols]

 In the drawings, the same reference numerals indicate the same or corresponding parts. DESCRIPTION OF SYMBOLS 1 Cord fixing tool 2 Wiring cord 3 Binding band 4 Housing outer wall 5 Auxiliary housing 6 Through hole 21, 36 Locking part 22 Insertion part 23 Depression 24 Detachment prevention part 31 Bush main body 32 Pressing part 33 Insertion part 34 Groove 37 Bush upper lid 38 Taper

Claims (3)

[Claims] 1. A cord comprising: a housing provided with a through hole; an auxiliary housing provided with a through hole; and a cord fixing tool having a locking portion sandwiched between the housing and the auxiliary housing. The fixing tool fixes the wiring cord with a binding band, and the wiring cord is inserted into a through hole of the housing and the auxiliary housing. 2. The cord fixing device according to claim 1, wherein a concave portion for fixing a wiring cord is provided in the cord fixing device. 3. The cord fixing device according to claim 1, wherein the cord fixing device is provided with a slip-off preventing portion for fitting a binding band.