JPH0567064U - Cord tension stop structure - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a structure in which tension can be easily interrupted by simply attaching a tension stopper to the cord in equipment requiring cord tension stop. [Constitution] A facility in which a notch or a wiring hole for passing a cord through an outer shell member having a space inside such as a casing or a cabinet is opened, the cord is connected to an end device provided in the outer shell member, and the plug side is extended to the outside. At, attach a tension stop to the cord located in the outer member,
When the tension stopper hits the inner wall of the outer shell member, the acting force pulled from the outside is transmitted to the outer shell member side by the tension stopper so that no tension is generated in the cord toward the end device.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 In the present invention, for example, in a facility in which a cord is pulled out from the back of a cabinet such as a vanity and connected to an outlet, tension is not generated in the cord up to the electric equipment when the cord is pulled from the outside. Regarding the cord tension stop structure.

[0002]

[Prior Art]

 Many vanities have a switch for lighting equipment and an outlet so that a dryer can be used. These switches and outlets are connected to power outlets on the building side by cords, but the cords are generally constructed so that they pass through the back side of the cabinet.

FIG. 11 shows an example of an outlet device incorporated in the front of the vanity. The device main body 50 is provided with a switch 51 and an outlet 52, and a cord 53 is connected to the back. The cord 53 is used by inserting it through a hole formed in the back plate on the back side of the cabinet and connecting a plug (not shown) at one end to an outlet on the building side.

In such equipment, it is necessary to interrupt the tension of the cord 53 so that a load is not applied to the connecting portion with the instrument body 50 when the cord 53 is pulled. For this purpose, as the simplest structure, a plurality of columnar ribs 50a are erected on the back side of the instrument body 50 as shown in the figure, and a cord 53 is wound around these ribs 50a to form a meandering shape. Wiring is done to.

The cord 53 receives resistance due to the rib 50 a, and by utilizing this resistance, even if the cord 53 is pulled toward the plug side, its working force is interrupted and an external force is exerted on the connecting portion with the instrument body 50. Will disappear. An example of such a tension stop that is used for the electrical cord wiring of an electric product is disclosed in JP-A-62-145898.

Further, in the case where the instrument main body 50 does not have a structure for interrupting the tension load, the tension stopper 55 is provided in the hole 54a formed in the back plate 54 of the cabinet as shown in FIG. The tension stopper 55 is inserted into and fixed to the edge of the hole 54a by a screw 55a, and the cord 53 is meandered and supported to prevent tension from acting on the connection point with the device side.

Further, as the simplest method, as shown in FIG. 13, a narrow slit 54b is cut in the back plate 54 of the cabinet, and a knot 53a is provided on the cord 53 at a position slightly apart from the inner surface of the back plate 54. There is also one. With such a knot 53a, even if the cord 53 is pulled in the direction of the arrow, the knot 53a is prevented from being caught by the back plate 54 and exerting tension on the connection point with the instrument body.

[0008]

[Problems to be solved by the device]

 However, if the device main body 50 is provided with the ribs 50a for stopping the tension as shown in FIG. 11, not only is the bulk thereof increased, but also the number of manufacturing steps is increased.

Further, as shown in FIG. 12, when the tension stopper 55 is provided on the back of the cabinet, a work for fixing the tension stopper 55 to the edge of the hole 54a is newly required, which increases the work load.

Further, the structure in which the rib 50a is provided on the instrument body 50 itself or the tension stopper 55 which is a separate body is fixed to the cabinet requires a large strength. That is, since both the instrument body 50 and the tension stopper 55 are fixed to the cabinet side, the tension is concentrated and acts, and the strength that can withstand this is required. For this reason, it is required to use a material having high strength or to have a thick wall in both the instrument body 50 and the tension stopper 55, and the degree of freedom in design is low.

Particularly in the case of the tension stopper 55 fixed to the back plate 54, the acting force when the cord 53 is pulled is indirectly transmitted from the tension stopper 55. On the other hand, since the back plate 54 is generally thin, an auxiliary plate or other reinforcing structure may be needed to suppress the deformation of the mounting portion.

Further, when the knot 53a of the cord 53 is used as shown in FIG. 13, it is considerably difficult to manually determine the position of the knot 53a, and the distance from the back plate 54 tends to vary. For this reason, if the distance between the knot 53a and the back plate 54 is too long, for example, when the cord 53 is pulled, the knot surface 53a does not reach the back plate 54 and the tension cannot be cut off.

Further, since the cord 53 is easily bent and has elasticity, even if the cord 53a is provided, if the cord 53 is strongly pulled outward, there is a high possibility that the cord 53 will come out of the slit 54b. For this reason, the reliability of the tension stop cannot be sufficiently ensured, and an accident such as a wire breakage during the installation or movement is likely to occur.

The problem to be solved in the present invention is to make it possible to easily interrupt the tension without providing or fixing a tension stopper on a member on the end device side.

[0015]

[Means for Solving the Problems]

 According to the present invention, a wiring hole or a notch is opened in an outer member that forms a space inside, one end is connected to an end device provided in the outer member, and a cord provided with a plug is wired at the other end. In a facility or device for feeding the plug out through a hole or a notch, a tension stopper is attached to the cord in a portion included in the space inside the outer shell member, and the tension stopper makes the cord relative to each other. The cord is fixed so as not to be movable, and is attached to the cord at a position where the cord up to the connection point of the terminal device is not strained when the cord itself hits the inner wall of the outer shell member.

[0016]

[Action]

 When the cord is pulled toward the plug side, the cord inside the shell member also moves so as to be extended outward. At this time, the tension stopper provided in the portion located in the inner space of the outer shell member cannot move relative to the cord, so that it moves with the cord and strikes the inner wall of the outer shell member. As a result, the cord is prevented from being pulled out further, and its tension increases.

On the other hand, the tension stopper restrains the cord immovably, and even when the cord hits the outer wall, the cord up to the terminal device side is placed in a natural state without tension. Therefore, even if the cord is pulled from the outside, its tension is transmitted to the outer member via the tension stopper, and the tension does not act on the cord to the end device side. Therefore, the natural cord is maintained in the state of being connected to the end device, and the disconnection or the like is prevented.

[0018]

【Example】

 FIG. 1 is a schematic perspective view of a main part showing a cord tension stop structure of the present invention, which will be described as an example in which a cord is passed through a back plate of a cabinet of a vanity.

In the figure, a wiring hole 1a is formed in a thin back plate 1 provided on the back surface of a cabinet, and a cord 2 is passed through the wiring hole 1a so that the plug 2a is located outside. The plug 2a at one end of the cord 2 is plugged into a power outlet (not shown) on the side of the building to be connected, and the cord 2 is a device body (not shown) such as an outlet and a switch as shown in FIG. 11 of the conventional example. ) Is connected to.

A tension stopper 3 is provided on a portion of the cord 2 located inside the cabinet and near the inner wall of the back plate 1. As shown in the perspective view in the figure, the tension stopper 3 has a mountain-like shape in which three protrusions 3a are formed, and the cord 2 is inserted into the two gaps between these protrusions 3a. The slit 3b for holding the Then, when the cord 2 is inserted into the slit 3b, the cord 2 is integrated with the tension stopper 3 in a state where the cord 2 is bent around the protrusion 3a in a flat U shape, and is provided on the upper ends of the protrusions 3a at both ends. It is restrained by the joint projection 3c.

The position of the tension stopper 3 is set slightly apart from the inner wall of the back plate 1, and the cord 2 up to the instrument body is set to a position where it gently bends as in the usual case. The size and shape of the wiring hole 1a are set so that the tension stopper 3 does not come out.

Here, when the cord 2 is pulled toward the plug 2 a side, the cord 2 moves in the direction of the arrow in the figure, and the tension stopper 3 comes into contact with the back plate 1. Since the back plate 1 is fixed to the cabinet, the tension stopper 3 is restrained by the inner wall of the back plate 1, and the force pulled toward the plug 2a is transmitted to the back plate 1 by the tension stopper 3. Therefore, the cord 2 between the plug 2a and the tension stopper 3 is tensioned by an external force, but such a tension is not generated in the cord between the tension stopper 3 and the instrument body. For this reason, even if the cord 2 is strongly pulled, the connecting portion with the instrument body does not loosen or come off, and a good connection state is maintained.

As described above, by simply attaching the tension stopper 3 to the cord 2, the propagation of the tension due to the external force can be blocked from the instrument body side. Further, it is not necessary to fix the tension stopper 3 to the back plate 1 of the cabinet, and the entire side of the protrusion 3a of the tension stopper 3 abuts on the back plate 1, so that the force acting on the back plate 1 is dispersed. , It is not necessary to have a reinforcing structure. Also, the tension stopper 3 does not come off unless it is forcibly pulled away from the cord 2, so there is no fear of slipping out from the wiring hole 1a compared to the one that used the knot of the cord 2. It is possible to reliably prevent the generation of tension on the body side.

FIG. 2 is a schematic perspective view showing another example.

In this example, a notch 1b is vertically cut from the edge of the back plate 1, and the cord 2 is passed through the notch 1b. Then, as in the case of FIG. 1, a tension stopper 4 is attached to the cord 2 in the portion located on the inner side of the cabinet. The tension stopper 4 has a shape in which two slits 4a and 4b are provided upside down, and the cord 2 is fitted into these slits 4a and 4b to be integrated.

When the cord 2 is pulled to the plug 2a side, the tension stopper 4 hits the back plate 1 as in the previous example, and the tension propagates to the cord 2 between the tension stopper 4 and the instrument body. Can be prevented.

Further, since the notch 1b is cut out from the edge of the back plate 1, the tension stopper 4 is attached to the cord 2 in advance, and the cord 2 is attached to the notch 1b before the back plate 1 is assembled. Wiring can be done simply by putting it inside.

FIG. 3 is a schematic perspective view when another tension stopper is used.

The tension stopper 5 in this example is one in which three protrusions 5b are raised at each apex angle portion of a base 5a having a triangular planar shape. Then, as shown in the drawing, the cord 2 is fitted between these protrusions 5b and bent into a U-shape to be integrated.

Even when such a tension stopper 5 is used, it is possible to prevent the tension from being propagated to the cord 2 up to the instrument body, as in the case of FIGS. 1 and 2.

4 and 5 show an example in which the tension stopper has a ring shape.

The tension stopper 6 is in the form of a ring having a slot as shown in FIG. 5A. As shown in FIG. 4, the middle portion of the cord 2 is bent and fitted into a double-threaded portion. By crimping so as to reduce the diameter as shown in FIG. 5B, the cord 2 can be folded so that it can be restrained.

In this example, when the cord 2 is pulled toward the plug 2a, not only the tension stopper 6 but also the fold 2b of the cord 2 hits the inner wall of the back plate 1 and does not come out of the wiring hole 1a. Therefore, as in the previous example, no tension is generated in the cord 2 from the fold 2b to the instrument body.

FIG. 6 shows an example in which the inner diameter of the wiring hole 1a formed in the back plate 1 is increased so that the plug 2a can be pulled out from the wiring hole 1a.

The tension stopper 7 is provided with a disc-shaped flange 7a larger than the inner diameter of the wiring hole 1a, and a protrusion 7c is raised on a triangular base 7b provided on the back side thereof to form two rows of slits. 7d is formed. The cord 2 is integrated with the tension stopper 7 in a state where it is inserted into the slit 7d and bent into a U shape.

In this example, the tension stopper 7 is attached to the cord 2 in advance, and after the wiring of the cord 2 inside the cabinet is completed, the plug 2a is passed through the wiring hole 1a and is extended to the outside as it is. You can Therefore, the wiring work of the cord 2 to the cabinet can be easily performed, and the cord 2 can be shipped as a product with the cord 2 stored in the cabinet, so that the cord 2 and the plug 2a are prevented from being damaged. When the cord 2 is pulled from the side of the plug 2a, the flange 7a of the tension stopper 7 hits the inner wall of the back plate 1 and the cord 2 from the tension stopper 7 to the instrument body does not come out from the wiring hole 1a. Prevents the propagation of tension.

FIG. 7 is a schematic perspective view of an example using another tension stopper, and FIG. 8 is a diagram showing details of the tension stopper.

As in the case of the example of FIG. 6, the tension stopper 8 is provided with a flange 8a larger than the wiring hole 1a that is large enough to allow the plug 2a to pass through, and the cord 2 is provided on the rear side of the flange 8a. A chamber block 8b for restraining the chamber is formed, and a lid 8c is attached to the chamber block 8b so as to be openable and closable.

As shown in FIG. 8B, a protrusion 8 d is formed in the chamber block 8 b to form a space into which the cord 2 can be inserted in a U-shaped bent state. On the lower surface of the lid 8c, there is provided a ridge 8e that is fitted into the space of the chamber block 8b and presses the U-shaped bent code 2. Then, by hooking the hook 8g of the lid 8c on the engaging projection 8f provided on the outer periphery of the chamber block 8b, the lid 8c can be closed and the cord 2 can be restrained and held as shown in FIG.

Even in the case of the tension stopper 8 as described above, the propagation of the tension to the cord 2 between the instrument body and the instrument body can be blocked, and the loosening and the disconnection of the connection portion can be prevented, as in the example of FIG. ..

Further, FIG. 9 is a schematic view showing an example in which the cord 2 can be integrated with the tension stopper without bending, and FIG. 10 is a view showing details of the tension stopper.

The tension stopper 9 has a circular flange 9a larger than the wiring hole 1a and has a long hole 9b formed in the flange 9a. Then, on the back surface side of the flange 9a, as shown in FIG. 10, a restraining block 9c having a substantially U-shaped cross section is formed along the opening edge of the elongated hole 9b. The restraint block 9c has slits 9d formed on the bottom surface so that the left and right sides can be elastically deformed from each other, and a large number of teeth 9e are formed on the inner wall of each. These teeth 9e are rack-shaped with sloped peaks and valleys as shown in FIG. 10 (a), and the peaks are cut from the flange 9a so as to bite into the surface of the cord 2 when moving outward. It has a shape that is tilted away. Then, the tooth 9e gradually raises the mountain as it goes to the bottom side of the restraint block 9c as shown in FIG. 9B, and when the cord 2 is pulled, the tooth 9e can be restrained with a stronger force. I am trying.

The cord 2 inserted from the long hole 9b is constrained by the teeth 9e and simultaneously provided with the slits 9d by simply pushing the cord 2 from the opening end of the constraining block 9c to the bottom side as shown in FIG. It is firmly integrated by the reaction force due to elastic deformation of.

When such a tension stopper 9 is used, the cord 2 does not need to be forcibly bent into a U shape and can be left as a straight line. Therefore, the lead wire of the cord 2 is not damaged and disconnection or the like can be prevented. Further, even when the cord 2 is pulled toward the plug 2a side, the cord 2 is restrained so that the ridges of the teeth 9e bite into it. Therefore, even after the cord 2 is pulled outward and the tension stopper 9 collides with the inner wall of the back plate 1 and stops, the cord 2 does not come out of the tension stopper 9. Therefore, even if the cord 2 is pulled outward, the tension applied to the cord 2 on the instrument body side is cut off as in the previous example.

When the cord 2 is strongly pulled outward, the cord 2 moves toward the bottom side of the restraining block 9c so as to be guided by the inclination of the teeth 9e. For this reason, the cord 2 is pushed into the high ridges of the teeth 9e, and is more firmly restrained by these ridges. Therefore, even if the cord 2 is pulled outward with a strong force, the cord 2 can be held by the tension stopper 9 without being pulled out by the restraint block 9c, and tension is exerted on the cord 2 between the instrument body side. Is completely prevented.

In the embodiment, the cabinet of the vanity is taken as an example, but it is needless to say that the present invention can be applied to various electric products including electric parts.

[0047]

[Effect of the device]

 In the present invention, it is possible to connect the cord to the end device side even if it is pulled from the outside, by simply attaching the tension stopper to the cord without fixing the tension stopper to the outer member such as the casing or cabinet. Can be maintained well. Therefore, the work of fixing the tension stopper to the outer shell member is not required, and the outer shell member of the portion where the tension stopper is fixed is not required to be reinforced, and the work of assembling the equipment can be easily performed.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an example in which the cord tension stopping structure of the present invention is applied to a back plate of a cabinet of a vanity.

FIG. 2 is a schematic perspective view showing an example in which a notch is provided in a back plate and a cord is passed through the notch.

FIG. 3 is a schematic perspective view showing an example in which a tension stopper different from that of FIG. 1 is used.

FIG. 4 is a schematic perspective view showing an example in which a ring-shaped tension stopper is used.

FIG. 5 is an example of a tension stopper for a ring lock, in which FIG. 5A shows the shape before crimping and FIG. 5B shows the shape after crimping.

FIG. 6 is a schematic perspective view showing wiring by a tension stopper provided with a flange on a back plate having a wiring hole larger than a plug.

FIG. 6 is a schematic perspective view of an example in which another tension stopper is used.

8 is a detail of the tension stopper of FIG. 7, (a) of which is a perspective view when the lid is opened, and (b) of which is a plan view thereof.

FIG. 9 is a schematic perspective view showing an example in which a tension stopper is used so that the cord can be restrained without being bent into a U shape.

10 is a detail of the tension stopper of FIG. 9, in which (a) of the figure is a cutaway perspective view, and (b) of the figure is a view as seen in the direction of the arrow in (a) of the figure.

FIG. 11 is a perspective view of a conventional example in which a tension stopper is integrally provided on a device body.

FIG. 12 is a perspective view of a conventional example using a tension stopper fixed to a wiring hole.

FIG. 13 is a perspective view of an example in which a knot is made on a cord and the knot is used for tensioning.

[Explanation of symbols]

 1 Back plate 1a Wiring hole 1b Notch 2 Cord 2a Plug 3, 4, 5, 6, 7, 8, 9 Tension stopper

Claims (1)

[Scope of utility model registration request] 1. A wiring hole or a notch is formed in an outer shell member that forms a space inside, and one end is connected to an end device provided in the outer shell member, and a cord provided with a plug is wired to the other end, and the cord is connected to the wiring. In a facility or device for feeding the plug out through a hole or a notch, a tension stopper is attached to the cord in a portion included in the space inside the outer shell member, and the tension stopper is configured to move the cord relative to each other. A cord tension stop structure, wherein the cord is attached so as to be immovably restrained and attached to the cord at a position where the cord up to the connection point of the terminal device does not tension when the cord itself hits the inner wall of the outer shell member.