JP6660590B2 - Cable outlet - Google Patents

Description

  The present invention relates to a cable outlet that is applied to various devices in which an operation of appropriately selecting and extracting a plurality of cables from a housing may occur, and in particular, to reliably prevent invasion of small animals and the like. About possible cable outlets.

  Generally, the cable outlet provided in the cabinet of the switchboard is closed with a plate-like lid.When connecting a portable measuring instrument to the switchboard, remove the lid and pull out the wiring for measurement. There must be. However, the wiring connected to the switchboard is not always of a certain thickness, so that a gap usually occurs between the cable outlet and the wiring. For this reason, while a portable measuring instrument or the like is connected to the switchboard, there is a risk that small animals such as snakes and rats may enter from the above-mentioned gaps and cause accidents such as disconnection.

In order to prevent the invasion of small animals, a method of closing the gap between the cable outlet and the wiring with a gum tape or a clay-like putty can be considered. However, this method is not efficient because the material must be prepared each time, and the processing and removal of the gap require cost and labor.
Conventionally, various methods have been proposed to address such problems, and several inventions and devices have already been disclosed.

For example, Patent Literature 1 discloses an invention relating to a structure of a cable outlet capable of coping with a case where the number of cables to be extracted is different depending on the type of the electronic device, under the name of “cable outlet structure”.
According to the present invention, a plurality of cable brackets are slidably arranged in a plurality of stages and moved in accordance with the size and position of the gap between the cable outlet and the cable. According to such a structure, even when the number of cables to be drawn is different depending on the type of the electronic apparatus, the gap between the cable and the cable outlet can be made as small as possible to prevent intrusion of rats, dust, and the like.

Patent Literature 2 discloses an invention relating to a housing panel in consideration of the splash and dust resistance of a cable extension portion for interfacing with the outside of the housing under the name of “sliding type open / close splash-proof housing panel”. I have.
The present invention is characterized in that a slide bracket is slidably attached to a long hole through which a cable passes.
According to such a structure, the area of the opening through which the cable passes can be changed continuously, so that even if the thickness of the cable changes, it is possible to easily perform the splash-proof treatment.

JP-A-10-17367 JP-A-8-148848

  The invention described in Patent Literature 1 has a structure in which the size of the opening changes only in the direction in which the cable bracket slides, and thus cannot be applied to a case where cables having different thicknesses are drawn. The size of the opening in the height direction can be adjusted to some extent in the height direction by making the cable outlet two stages, but the size of the opening cannot be changed continuously. It has a problem of poor sex.

  In the invention described in Patent Literature 2, the size of the opening can be continuously changed in the direction in which the slide bracket slides, but the size of the opening in the other direction is not changed. Cannot be changed. Therefore, this invention also has a problem of poor versatility similarly to the invention described in Patent Document 1.

  The present invention has been made in view of such conventional circumstances, and when appropriately selecting and pulling out a plurality of cables from a housing such as a switchboard, the gap between the cables and the outlet is reduced to reduce the size of small animals and the like. An object of the present invention is to provide a cable outlet capable of reliably preventing intrusion.

  In order to achieve the above object, a cable outlet according to a first aspect of the present invention is a cable outlet provided in a housing for passing a cable, the fixed ring having a circular opening in the center, and a thin plate. A plurality of blades, each of which has an inner edge portion having an arc shape having the same radius as the circular opening of the stationary ring from the base end to the distal end, and a fixing pin erected at the base end of the blade, A roller which is non-rotatably inserted with respect to the fixed pin, and a movable ring having an opening larger than the circular opening at the center are provided, and the fixed ring is on the same circle having the same center as the opening. Pin insertion holes of the same number as the blades are formed at equal intervals in the circumferential direction, the fixed pins are loosely fitted into the pin insertion holes and held rotatably by a fixed ring, and the roller is a movable ring and an outer peripheral surface. Are installed so that they can come into contact with each other. When rotated about an axis, the inner edge part constitutes a part of the periphery of the circular opening, and the tip is directed in the same circumferential direction, and the tip is sequentially overlapped with the other base end. Characterized in that it is attached to a fixed ring.

  In the cable outlet having such a structure, when the movable ring is rotated in a predetermined direction, the rollers roll along the outer peripheral surface of the movable ring, and as a result, the rollers are connected to the respective rollers via fixed pins. The plurality of blades rotate in the same direction in the same direction and rotate by the same angle, and an opening having a peripheral edge formed by the inner edge thereof is formed inside the circular opening of the fixed ring. The opening formed in this manner gradually changes from a state in which the inner edge forms a part of the periphery of the circular opening, as the plurality of blades are rotated in a direction to close the circular opening. It has the effect of being smaller. Further, the inner edges of the plurality of blades have an effect of uniformly holding the outer peripheral surface of the cable.

  According to a second aspect of the present invention, in the first aspect, the fixed ring has an annular groove provided on the outer peripheral surface with a predetermined width, and the plurality of pin insertion holes are paired with the annular groove interposed therebetween. The fixing pin is provided such that both ends thereof are rotatably loosely fitted into a pair of pin insertion holes in a state where the roller is disposed in the annular groove.

  In the cable outlet having such a structure, in addition to the operation of the first invention, since the movable ring and the roller are not exposed on either the front surface or the back surface of the fixed ring, the movable ring is not operated when the movable ring is operated. The roller and the movable ring have the effect that the hand of the operator does not touch, and the movable ring and the roller are less likely to bite dust and the like.

According to a third aspect of the present invention, in the second aspect, a lever provided on the movable ring is provided, and the fixed ring is provided with a long hole in which the lever is allowed to protrude at a tip end portion within a predetermined angle range. And is formed along a rotation locus drawn by a lever when the movable ring is rotated.
In the cable outlet having such a structure, in addition to the operation of the second invention, there is an operation that the movable ring is easily rotated by operating the lever.

According to a fourth aspect, in any one of the first to third aspects, a sprocket is externally inserted into the fixed pin instead of the roller, and the movable ring has a plurality of teeth provided on an outer peripheral surface thereof. It is characterized by being installed so as to be able to mesh with a sprocket.
The cable outlet having such a structure has an effect that the sprocket is unlikely to slip with respect to the movable ring in addition to the effect of any of the first to third inventions.

According to a fifth aspect, in any one of the first to fourth aspects, the fixed ring is detachably attached to the housing using a screw member.
The cable outlet having such a structure has an effect of being easily attached to and detached from the housing in addition to the effect of any of the first to fourth inventions.

  According to the first invention, even when it is necessary to appropriately select a plurality of cables having different thicknesses and to draw them out of a housing such as a switchboard, the number of turns of the blades depends on the thickness of the bundle of the plurality of cables. By adjusting the moving angle, it is possible to form an opening of an appropriate size so as to reduce the gap between the cable bundle and the cable bundle. Therefore, invasion of a small animal or the like from the gap can be reliably prevented. Further, the outer peripheral surface of the cable is uniformly held by the inner edge portions of the plurality of blades, and there is no possibility that the cable is twisted in an unexpected state.

  According to the second invention, in addition to the effects of the first invention, the movable ring and the roller may be damaged by biting dust or dust, or the worker may inadvertently touch the movable ring or the roller. Since there is no fear, there is an effect that it can be used safely for a long time.

  According to the third aspect, in addition to the effect of the second aspect, since the operation of rotating the movable ring is easy, the operation of pulling out the cable from the housing can be efficiently performed in a short time. Play.

  According to the fourth aspect, in addition to the effects of any one of the first to third aspects, the rotation angles of the plurality of blades can be matched and all the blades can be opened and closed at the same timing. The effect that operability improves is produced.

  According to the fifth aspect, in addition to the effects of any one of the first to fourth aspects, an effect is provided that the exchange can be easily performed as needed.

(A) is a perspective view schematically showing the appearance of a switchboard provided in a housing in Example 1 of the cable outlet according to the embodiment of the present invention, and (b) and (c) are the same, respectively. It is the front view and rear view of the cable outlet shown in Drawing (a), and (d) is an AA line sectional view in the figure (b). (A) and (b) are each a plan view of a blade and a movable ring constituting the cable outlet shown in FIG. 1, (c) is a side view of the cable outlet shown in FIG. 1, (d) ) Is a sectional view taken along line BB in FIG. (A) and (b) are figures which show the state which rotated six blade | wings centering on the fixing pin in FIG.1 (c). (A) and (b) are figures which show the state which rotated six blade | wings centering on the fixing pin in FIG.1 (c). (A) is a front view of Example 2 of the cable outlet according to the embodiment of the present invention, and (b) is a cross-sectional view taken along line CC in FIG. (A) is a top view of the movable ring which comprises the cable outlet shown in FIG. 5, (b) is a cross-sectional view of the cable outlet of Example 2. FIG.

  The cable insertion port of the present invention will be described with reference to FIGS. In the following description, a switchboard is used as an example.However, the present invention is not limited to this, and the present invention is applied to a general device that involves an operation of appropriately selecting a predetermined cable from a plurality of cables and pulling the cable from a housing. Applicable to:

FIG. 1A is a diagram schematically illustrating an example of the appearance of a switchboard provided with a cable outlet according to the present invention. FIG. 1B is a partially enlarged view of a portion where the cable outlet is attached in FIG. 1A, and FIG. 1C is a diagram illustrating the cable outlet of FIG. 1B. FIG. 3 is a diagram showing a state viewed from the inside of the switchboard. FIG. 1D is a sectional view taken along line AA in FIG. 1B.
2 (a) and 2 (b) are plan views of the blade and the movable ring constituting the cable outlet shown in FIG. 1, respectively. 2 (c) is a side view of the cable outlet shown in FIG. 1, and FIG. 2 (d) is a sectional view taken along line BB in FIG. 2 (c).
FIGS. 3A, 3B, 4A, and 4B are views showing a state in which six blades are rotated around a fixing pin in FIG. 1C. .

  1 (b) and 1 (c) and FIGS. 3 and 4, hatching is applied to facilitate identification of the cables, and in FIG. 1 (d), the cables are inserted in order to avoid complicating the drawing. Illustration is omitted. In FIG. 2D, hatching indicating that the lever is a sectional view is omitted. Further, in FIGS. 3 and 4, the illustration of the housing is omitted, and one of the six blades and the six fixing pins is one of the six blades and one of the six fixing pins to avoid complicating the drawing. The symbol is attached only to.

  As shown in FIGS. 1 and 2, the cable outlet 1 a is provided in a part of the housing 12 for extracting a predetermined cable 11 from the switchboard 10, and includes six blades made of a thin plate member. 2, a fixed pin 3 erected on the blade 2, a fixed ring 4 on which the blade 2 is rotatably mounted via the fixed pin 3, a movable ring 5 mounted on the fixed ring 4, The movable ring 5 includes a lever 6 provided on an outer peripheral surface of the movable ring 5 so as to protrude in a radial direction, and six rollers 7 a which are non-rotatably inserted with respect to the six fixed pins 3.

  An annular groove 4a having a predetermined width is provided on the outer peripheral surface of the fixed ring 4, and the movable ring 5 contacts the six rollers 7a and the outer peripheral surface with each other and is fitted in the annular groove 4a. It is rotatably held by a fixed ring 3. A circular opening 4b is provided at the center of the fixed ring 4, and six pairs of pin insertion holes 4c, 4c face each other on the same circle having the same center as the opening 4b with the annular groove 4a interposed therebetween. And it is pierced at equal intervals in the circumferential direction.

  Both ends of the fixed pin 3 are loosely fitted to the pin insertion holes 4c, 4c so that the roller 7a is disposed inside the annular groove 4c. That is, the blade 2 and the roller 7 a are integrally and rotatably attached to the fixed ring 4 via the fixed pin 3. As shown in FIG. 2A, the blade 2 has an inner edge formed in an arc shape having the same radius as the opening 4b of the fixed ring 4 from the base end 2a where the fixing pin 3 is erected to the tip 2b. 2c is provided.

  When the six blades 2 are rotated around the fixing pin 3, the inner edge 2c constitutes a part of the periphery of the circular opening 4b, and the tip 2b is directed in the same circumferential direction. At the same time, the tips 2b of the one blade 2 are attached to the stationary rings 4 so as to sequentially overlap the base ends 2a of the other blades 2 (see FIG. 1C).

  In the cable outlet 1a having the above structure, when the movable ring 5 is rotated in a predetermined direction by operating the lever 6, the six rollers 7a roll along the outer peripheral surface of the movable ring 5. As a result, the six blades 2 connected to the respective rollers 7a via the fixing pins 3 rotate in the same direction in the same direction by the same angle. Thus, an opening 8 whose peripheral edge is formed by the inner edges 2c of the six blades 2 is formed inside the opening 4b of the stationary ring 4 (see FIG. 1B or FIG. 1C). Further, the inner edge portion 2c of the plurality of blades 2 has an effect of uniformly holding the outer peripheral surface of the cable 11.

  The opening 8 formed gradually becomes smaller as the six blades 2 are rotated in a direction to close the opening 4b from the state where the inner edge 2c forms a part of the periphery of the opening 4b. . However, each of the six blades 2 has a sufficient width so that another opening is not formed in a portion other than the opening 8 by being rotated.

As described above, in the cable outlet 1 according to the present invention, even when it is necessary to appropriately select a plurality of cables having different thicknesses and to pull out the cable from the housing 12 of the switchboard 10, the cable outlet shown in FIGS. As described above, by adjusting the rotation angle of the blades 2 according to the thickness of the bundle of the plurality of cables 11, the opening 8 having an appropriate size is formed so that the gap between the bundle of the cables 11 is reduced. It is possible to Therefore, invasion of a small animal or the like from the gap can be reliably prevented.
Further, the outer peripheral surface of the cable 11 is uniformly held by the inner edge portions 2c of the six blades 2 and the possibility that the cable 11 is twisted in an unexpected state is low. .
These functions and effects are similarly exerted when only one cable 11 having a different thickness is pulled out.

FIG. 5A is a front view of the cable outlet of the present embodiment, and FIG. 5B is a cross-sectional view taken along line CC in FIG. 5A. FIG. 6A is a plan view of a movable ring constituting the cable outlet of the present embodiment, and FIG. 6B is a cross-sectional view of the cable outlet of the present embodiment.
5 (a) and 5 (b) correspond to FIGS. 1 (b) and 1 (d), respectively, and FIGS. 6 (a) and 6 (b) correspond to FIGS. 2 (b) and 2 (b). (D) respectively. Further, in FIG. 5A, in order to avoid complicating the drawing, reference numerals are given only to one blade and one pin insertion hole among the six blades and the six pin insertion holes. Further, the same reference numerals are given to the components shown in FIGS. 1 to 4 and the description thereof will be omitted.

  As shown in FIGS. 5 and 6, the cable outlet 1b is different from the cable outlet 1a of the first embodiment in that the lever 6 is provided on the outer peripheral surface of the movable ring 5 so as to protrude in the radial direction. Are erected on the movable ring 5. The fixed ring 4 has an elongated hole 4d into which the lever 6 projects in the state of protruding the tip 6a, and the rotation drawn by the lever 6 when the movable ring 5 is rotated within a predetermined angle range. It is formed along the trajectory. Further, at the cable outlet 1a, instead of the roller 7a, a sprocket 7b is externally inserted into the fixing pin 3, and the movable ring 5 is provided with a plurality of teeth 5a on the outer peripheral surface, and is installed so as to mesh with the sprocket 7b. Have been. The fixed ring 4 is configured to be detachably attached to the housing 12 using the screw member 9.

  In the cable outlet 1b having such a structure, the movable ring 5 can be easily rotated by holding the lever 6, so that the operation of pulling out the cable 11 from the housing 12 can be performed efficiently in a short time. It is. Further, since the sprocket 7b is unlikely to slip with respect to the movable ring 5, the rotation angles of the six blades 2 can be matched, and all the blades 2 can be reliably opened and closed at the same timing. Thereby, operability is improved. Further, compared to the cable outlet 1a, the cable outlet 1b can be easily attached to and detached from the housing 12. That is, since the replacement is easy, the time and labor required for the maintenance work can be saved.

In addition, although the number of the blades 2 is six at the cable outlets 1a and 1b, the number of the blades 2 is not limited thereto, and the number of the blades 2 can be appropriately changed. In the cable outlets 1a and 1b, the movable ring 5 is held by the fixed ring 4 in a state of being fitted into the annular groove 4a, but the cable outlet of the present invention is limited to such a structure. is not. For example, instead of providing the fixed groove 4 with the annular groove 4a, an annular projection having a circular shape in a plan view is provided so as to surround the opening 4b, and the movable ring 5 is rotatably inserted into the annular projection. Can also be adopted.
Even with such a structure, by adjusting the rotation angle of the movable ring 5, the opening 8 formed by the inner edge 2c of the six blades 2 is formed in an appropriate size, and thereby, The effect of making the gap between the opening 8 and the cable small and preventing invasion of small animals from the gap is similarly exhibited.

  However, if the movable ring 5 has the structure as shown in the first and second embodiments, the movable ring 5 and the rollers 7a and the sprockets 7b are not exposed on either the front surface or the rear surface of the fixed ring 4. Therefore, the operator does not touch the roller 7a, the sprocket 7b, and the movable ring 5 when operating the movable ring 5, and the movable ring 5 and the roller 7a, the sprocket 7b can bite dirt and dust. Poor. Therefore, it can be safely used for a long time.

  INDUSTRIAL APPLICABILITY The present invention is applicable to various types of devices in which there is a possibility that an operation of selecting and pulling out a plurality of cables from a housing as appropriate may occur.

  1a, 1b: Cable outlet 2 ... Blade 2a ... Base end 2b ... Tip 2c ... Inner edge 3 ... Fixed pin 4 ... Fixed ring 4a ... Annular groove 4b ... Opening 4c ... Pin insertion hole 4d ... Long hole 5 ... Movable ring 5a: tooth 6: lever 6a: tip 7a: roller 7b: sprocket 8: opening 9: screw member 10: switchboard 11: cable 12: housing

Claims (3)

A cable outlet provided in the housing for passing a cable,
A fixed ring provided with a circular opening in the center,
A plurality of blades made of a thin plate-like member, and provided with an inner edge portion having an arc shape having the same radius as the circular opening of the fixed ring from the base end to the tip,
A fixing pin erected on the base end of the blade,
A roller which is non-rotatably inserted with respect to the fixing pin,
A movable ring in which an opening larger than the circular opening is provided at the center,
And a lever that stands on the movable ring .
In the fixed ring, the same number of pin insertion holes as the blades are formed at equal intervals in the circumferential direction on the same circle having the same center as the opening , and an annular groove is provided on the outer peripheral surface with a predetermined width. Has been
The plurality of pin insertion holes are respectively provided so as to form a pair with the annular groove interposed therebetween,
The fixed pin is rotatably held by the fixed ring by the both ends being rotatably loosely fitted into the pair of pin insertion holes with the roller disposed in the annular groove. ,
The roller is installed so that the movable ring and the outer peripheral surface can contact each other,
When the plurality of blades are rotated around the fixing pin as an axis, the inner edge portion constitutes a part of the peripheral edge of the circular opening, and the tip is directed in the same circumferential direction. Attached to the fixed ring so that the tip sequentially overlaps the other base end ,
The fixed ring has an elongated hole in which the lever is loosely fitted so that the tip can protrude. The elongated hole is formed along a rotation locus drawn by the lever when the movable ring is rotated within a predetermined angle range. Cable outlet characterized by being done. Instead of the roller, a sprocket is extrapolated to the fixing pin,
The cable outlet according to claim 1, wherein the movable ring has a plurality of teeth provided on an outer peripheral surface thereof and is installed so as to mesh with the sprocket. Cable outlets of claim 1 or claim 2, wherein the stationary ring is mounted detachably with a screw member with respect to the housing.

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