JPH036983Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field of the Present Invention> The present invention relates to a cord bushing used for fixing a power cord or antenna cable, for example, when attaching it to a home appliance or the like.

<Prior Art> (FIG. 5) Generally, the power cord of a home appliance is fixed to the back plate of the appliance using a cord bushing and is led out of the appliance.

FIG. 5 is a diagram showing an example of such a conventional cord bushing.

In the figure, reference numeral 1 denotes a hollow, almost box-shaped first holder with an open top, side walls 2,
Cord receiving recesses 2a and 3a each having the same semicircular shape are provided on the upper end surface of the cord receiving member 3. Further, at the lower ends of the side walls 2 and 3, a mounting flange 2b extending downward from the bottom surface 4 thereof,
3b is provided.

One side surface portion 5 includes side end surfaces 2c of side walls 2 and 3,
It is formed with a step slightly inward from 3c, and a square hole 5a is provided approximately in the center of the side surface 5.

Further, a second holder 8 is connected to the upper edge of the other side surface portion 6 via a thin hinge portion 7 so as to have flexibility.

The second holding body 8 has a first
It has a shape that is almost symmetrical to the first holder 1, and therefore, the side walls 9, 10 have the first holder 1.
Cord receiving recesses 9a and 10a formed in the same semicircular shape as the cord receiving recesses 2a and 3a are provided at symmetrical positions with respect to the hinge part 7.
When the second holder 8 is stacked on the holder 1 via the hinge part 7, the cord receiving recess 2a,
3a, 9a, and 10a are formed into a cylindrical shape.

Further, like the first holder 1, the side walls 9, 10 of the second holder 8 are also provided with mounting flanges extending downward from the bottom surface 11 thereof.

A locking portion 14 is provided on one side surface 12 of the second holder 8 and extends upward in parallel with the side surface 12.
is provided, and at the tip of the locking part 14,
A claw 14a is formed so as to be hooked into a square hole 5a provided in the side surface 5 of the first holder 1 when the second holder 8 is stacked on the first holder 1.

Further, in the hollow portion of the second holder 8, a rib 15 is provided upright so as to cross a portion of the semi-cylindrical space formed by the cord receiving recesses 9a, 10a.

In the case of a conventional cord bushing having such a structure, the cord 18 to be fixed is put into the cord receiving recesses 2a, 3a of the first holder 1, and the second holder 8 is rotated via the hinge part 7. move. At this time, the cord 18 is pushed downward by the ribs 15 provided on the second holder 8, and the claws 14a of the second holder 8 touch the corners of the first holder 1. Both holders 1 and 8 are hooked into the holes 5a.
When the cord 18 is overlapped with the rib 15 and the first
is clamped to the bottom of the holder 1 with strong pressure,
It will be fixed to the cord bushing so that it cannot be removed.

Next, the vertically bent portion 1 is provided on the back plate 19 of the home appliance or the like to which the cord 18 is to be fixed.
The cord bushing with the cord 18 fixed thereto is inserted into the mounting hole 20 having the holes 9a and 19b, and the bottom portions 4 and 11 of both the holders 1 and 8 are bent at the bent portion 19.
a, 19b so as to make sliding contact with them. At this time, the mounting flanges extending from the side walls 2, 9, 3, and 10 of both holders 1 and 8 serve as stoppers, so that the cord bushing is fixed to the back plate 19 in the direction in which the cord 18 is pulled out. It turns out.

<Problems to be Solved by the Present Invention> However, in the conventional cord bushing as described above, the two holders 1 and 8 are connected by the hinge part 7, and the hinge part 7 cannot be bent strongly to a right angle. It will be done. In order to bend the hinge part 7 at a right angle like this, it is necessary to make the hinge part 7 as thin as possible. However, if it is made thinner, it is bent to a right angle, and the cord 18 is held under strong pressure, resulting in a strong opening force being applied to the hinge portion 7, making it very easy to break.

Therefore, if the hinge portion 7 is broken, both the holders 1 and 8 of the cord bushing will open, and the cord 18 will no longer be fixed.

For this reason, the cord 18 may be pulled from the outside, causing a malfunction of the home appliance, or one of the holders may fall off, causing the cord 18 to bite into the end of the back plate 19, causing damage to the cord 18, resulting in a short circuit. This was the cause of accidents and other accidents.

<Purpose of the present invention> The present invention was made in view of the above circumstances.
It is an object of the present invention to provide a cord bushing which solves the above problems by maintaining the fixed state of the cord even if the hinge part is cut.

<One Embodiment of the Present Invention> (FIGS. 1 to 4) An embodiment of the present invention will be described below based on the drawings.

FIG. 1 is a perspective view showing the cord bushing of the present invention, and FIGS. 2a and 2b are sectional views showing the main parts thereof.

In the figure, reference numerals 25 and 37 denote first and second holders formed in a hollow, substantially rectangular shape with an open upper surface. , a protrusion piece 25b that protrudes upward is provided.

The upper end surfaces of the side walls 26 and 27 of the first holder 25 are formed with cord receiving recesses 26a and 27a which are recessed in the same semicircular shape for receiving the cord.

Further, the side wall 26 has a mounting flange 26b extending largely downward, and behind the mounting flange 26b, as shown in FIG. A plate-shaped mounting flange 29 is provided that protrudes downward from 28.

Further, a groove 30a is provided in the vertical direction at the front end of the opposite wall 30 of the first holding body 25.
A locking portion having an outwardly tapered surface 31 is adjacent to the protruding portion 30b protruding in the width direction of the first holding body 25 and one side end of the side wall 27. 32 is provided.

Furthermore, a locking protrusion 33a is provided at a predetermined position on the upper end of the opposing wall 33 of the first holder 25, and protrudes outward by a predetermined length.

A connecting plate 35 is bendably connected to the lower edge of the opposing wall 33 via a thin, flexible hinge portion 34 .

Approximately at the center of the connecting plate 35, at a position approximately equidistant from the hinge portion 34 to the locking protrusion 33a,
A square locking hole 35a is provided.

A second holder 37 is bendably connected to the other end of the connecting plate 35 at the lower edge of one opposing wall 38 via a hinge portion 36 similar to that at the one end. .

The second holding body 37 sandwiches the connecting plate 35,
It is formed in a shape substantially symmetrical to the first holder 25, and has ribs 37b erected across the hollow portion 37a on its upper surface.

The upper surfaces of the side walls 39, 40 of the second holder 37 are provided with cord receiving recesses 39a, 40a which are recessed in the same semicircular shape as those of the first holder 25. 25 and the second holding body 37, the cord receiving recesses 26a, 27a of the first holding body 25 and the cord receiving recesses 39a, 40a of the second holding body receive the cord 18 to be fixed. form a cylindrical space for

Further, the side wall 39 has a mounting flange 39b that extends downwardly and has a large mounting flange 39b.
A plate-shaped mounting flange 42 (see FIG. 4) that protrudes downward from the bottom surface portion 41 is provided.

At a predetermined position on the upper end of the opposing wall 38 of the second holding body 37, there is a locking member for tightly fitting into the locking hole 35a of the connecting plate 35 together with the locking protrusion 33a of the first holding body 25. A stop protrusion 38a is provided.

Further, a groove 43a is provided in the front end of the opposite wall 43 of the second holding body 37 in the vertical direction, and furthermore, a groove 43a is provided in the center of the opposite wall 43, protruding upward, and a first groove 43a is provided at the tip thereof. A locking portion 44 having a claw 44a for locking to the locking portion 32 of the opposite wall 30 of the holding body 25 is provided in a protruding manner.

Note that the first holding body 25, the second holding body 37, and the connecting plate 35 that connects both the holding bodies 25, 37 are as follows:
It is integrally molded from plastic material.

<Operation of Example> Next, the operation of attaching a power cord to the back plate of a home appliance using the cord bushing having the above structure will be described.

First, as shown in FIG. 3a, with the power cord 18 to be fixed inserted into the cord receiving recesses 26a and 27a of the first holder 25, the second holder 37 is inserted into the connecting plate 35. Hinge parts 34 and 36 at both ends
is bent at a right angle and rotated, and the upper surfaces of the first and second holders 25 and 37 are butted against each other.

At this time, the cord 18 is pushed downward by the rib 37b provided on the second holding body 37, and the claw 44a of the locking portion 44 of the second holding body 37 Both the holding bodies 25,
37 are overlapped, the cord 18 is strongly pressed and clamped to the rib 37b and the bottom of the first holding body 25, and is fixed to the cord bush so that it cannot be removed.

On the other hand, when the second holding body 37 rotates, the locking protrusions 33a and 38a provided on both the holding bodies 25 and 37 are inserted into the locking hole 35a of the connecting plate 35, and strongly contact both ends of the

Moreover, since the cord 18 is held between the first and second holding bodies 25, 37 under strong pressure as described above, both holding bodies 25, 37 are supported by the claw 44a as a fulcrum, as shown in FIG. 3b. A force is generated in the direction of vertical release on the left end side. For this reason, 2
Since force is applied to the two locking protrusions 38a and 33a in the upward and downward directions (in FIG. 3b) away from each other, they adhere even more tightly to both inner walls of the locking hole 35a of the connecting plate 35, so that they cannot be removed from the locking hole 35a. It will be in a state where it is fitted.

Therefore, in this state, even if the hinge parts 34 and 36 at both ends of the connecting plate 35 are broken due to the strong opening force of the cord 18, the locking protrusions 33a and 3
8a is in close contact with both inner walls of the locking hole 35a with a strong pressing force, and the connection between both the holders 25 and 37 is maintained.

Next, as shown in FIG. 4, the cord bushing to which the cord 18 is fixed is inserted into the first holder in the mounting hole 20 provided on the back plate 19 of the home appliance and having bent portions 19a and 19b on both sides. The bent portion 19a of the back plate 19 is inserted between the mounting flanges 26b and 29 of the second holder 37, and the bent portion 19b of the back plate 19 is inserted between the mounting flanges 39b and 42 of the second holder 37. The cord bushing is thereby fixed to the back plate 19 of the household appliance.

<Effects of the Embodiment> The cord bushing of the present invention is connected by two hinge parts 34 and 36 at both ends of the connecting plate 35 instead of one hinge part as in the conventional case, so the hinge parts are less likely to break. In addition to this, even if the hinge parts 34, 36 of the connecting plate 35 connecting the first and second holders 25, 37 are cut, the engagement provided on both the holders 25, 37 can be maintained. Since the locking protrusions 33a and 38a are strongly pressed against the inner walls at both ends of the locking hole 35a of the connecting plate 35, both holders 2
5 and 37 do not open, and the cord remains fixed.

Therefore, unlike in the past, the cord does not come out of the cord bush and is pulled from the outside, and the cord is also prevented from being damaged, which greatly helps prevent breakdowns and accidents in home appliances, etc. It turns out.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the cord bushing of the present invention, FIG. be. FIGS. 3a and 3b are cross-sectional views showing the operation of one embodiment, and FIG. 4 is a perspective view similarly showing the operation of one embodiment. FIG. 5 is a perspective view showing an example of a conventional cord bushing. 25... First holding body, 26a... Cord receiving recess, 27a... Cord receiving recess, 29... Mounting flange, 32... Locking part, 33a... Locking projection, 34... Hinge part, 35...Connecting plate, 35a
... Locking hole, 36 ... Hinge part, 37 ... Second holding body, 37b ... Rib, 38a ... Locking protrusion,
39a... Cord receiving recess, 40a... Cord receiving recess, 42... Mounting flange, 44... Locking part, 44a... Claw.

Claims (1)

[Claims for Utility Model Registration] A connecting plate 35 of a predetermined length having a locking hole 35a approximately in the center, and opposing walls 3 at both ends of the connecting plate 35, respectively.
3, 38, the hinge portions 34, 3
6, and the height between each of the hinge parts 34 and 36 and the upper end of each of the opposing walls 33 and 38 is set to be approximately half the length of the connection plate 35. , 36, when the opposing walls 33, 38 are bent so as to come into close contact with the connecting plate 35, the upper surfaces of the first and second holders 25, 37 are brought into contact with each other; , 37 respectively protrudes from the upper ends of the opposing walls 33, 38 at the hinge parts 34, 36.
When bent so as to come into close contact with the connecting plate 35,
The locking protrusions 33a and 38a that are tightly fitted into the locking holes 35a of the connecting plate 35 and the upper surfaces of the first and second holders 25 and 37 are butted against each other, and the cord is placed on the butted surfaces. Cord receiving recesses formed on the upper surfaces of the first and second holders to hold them substantially parallel and in a pressed state; and opposite walls of the first and second holders 25 and 37. 30, 43, and the hinge portions 34, 36
locking means 32 and 44 for locking the opposite walls 30 and 43 to each other in a state where the upper surfaces of the opposite walls are bent and abutted against each other; A cord bushing equipped with a mounting flange for mounting in a notch of the mounting plate in a direction parallel to the mounting plate.