KR101862849B1

KR101862849B1 - Cable clamp

Info

Publication number: KR101862849B1
Application number: KR1020120052283A
Authority: KR
Inventors: 토모노리 미네무라
Original assignee: 다키겐 세이조 가부시키가이샤
Priority date: 2011-05-17
Filing date: 2012-05-17
Publication date: 2018-07-05
Also published as: TWI543485B; TW201306410A; CN102790464A; CN102790464B; JP2012243860A; KR20120128578A; JP5722701B2

Abstract

The cable clamp of the present invention for holding the cable derived from the opening of the panel on the surface of the panel includes a cable packing body to be attached to the cable, a pair of slide cases to straddle the cable packing body from both upper and lower sides, And a taper washer disposed between the slide case and the attachment screw. The cable packing body has a through hole through which a cable is inserted and a slit through which the cable passes from the side to the through hole. Each of the pair of slide cases has a convex portion or a concave portion on the inner side surface when the slide cases are arranged to face each other. When the convex portion and the concave portion are arranged to face each other, the convex portion of one slide case corresponds to the concave portion of the other slide case Position. The slide case also has a first screw hole into which the mounting screw is smoothly fitted, and a first inclined surface inclined downward from the inner surface to the outer surface when the pair is arranged to face each other. The taper washer has a second screw hole through which the mounting screw passes, and a second inclined surface that is complementary to the first inclined surface of the slide case, and is arranged on the first inclined surface in alignment with the second inclined surface. When the attachment screws are inserted into the first screw holes of the pair of slide casings arranged opposite to each other and the second screw holes of each taper washer and twisted into the panel, the projections of the slide cases opposed to each other engage with the recesses In addition to the load, the cable packing body is compressed by the slide case, so that the periphery of the cable and the periphery of the cable packing body are water-resistant.

Description

Cable clamp {CABLE CLAMP}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cable clamp for holding a cable, more particularly, to a cable clamp attached to a peripheral edge of an opening provided on a wall panel of a housing for housing various electric devices, And more particularly to a cable clamp for holding a cable leading from an opening.

BACKGROUND ART Conventionally, as disclosed in Japanese Patent No. 3431355, for example, a cable clamp comprising a plurality of blocks disposed adjacent to each other in a vertical direction on a wall panel of a housing is known. Each of the blocks is provided with a hollow portion on the surface facing the adjacent block so as to be able to hold the cable between two adjacent blocks, and the elasticity of the small block body having the substantially semicylindrical concave portion for holding the cable in the hollow portion The packing is freely attached and detached. In the front and rear surfaces of the block defining the hollow portion, a substantially semicircular notch is provided corresponding to the concave portion of the elastic packing, and the cable is held between the concave portion of the elastic packing and the adjacent two blocks by the notch portion .

In order to attach such a conventional cable clamp to the peripheral edge of the opening of the wall panel from which the cable is led out, first, the cable is sandwiched between two elastic packing pieces which are opposed to each other and the elastic packing is attached to the hollow portion of the block, Blocks, and then the plurality of blocks adjacent to each other in the up-and-down direction are fixed to each other by long screws passing through in the vertical direction. After this state is fixed, the cable clamp is attached to the wall panel by another screw penetrating from the front to the back of the block. That is, in order to fix the cable clamp to the panel in the state where the cable is held, it is necessary to fasten the screws in the two directions, and there has been a problem that the operation becomes much laborious.

It is an object of the present invention to provide a cable clamp capable of simultaneously holding a cable and fixing a cable clamp to a panel by fastening a screw in one direction and improving workability of attachment.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a cable clamp for holding a cable derived from an opening of a panel on a surface of a panel,

The cable packing body

A pair of slide cases for narrowing the cable packing body mounted on the cable from both upper and lower sides,

An attachment screw for attaching each slide case to the panel,

And a taper washer disposed between each slide case and the attachment screw,

Wherein the cable packing body has a through hole through which a cable is inserted and a slit through which a cable that passes from the side to the through hole passes,

Wherein each of the pair of slide cases has a convex portion or a concave portion on the inner side surface when a pair of the slide cases are arranged to face each other and when the pair of the convex portions and the concave portions are arranged so as to face each other, The slide case is disposed at a position corresponding to the concave portion of the slide case,

Each of the slide cases further has a first screw hole through which the mounting screw is smoothly fitted and a first inclined surface inclined downward from the inner surface when the pair of slide cases are arranged to face the outer surface,

Wherein the taper washer has a second screw hole through which the mounting screw passes, and a second inclined surface that is complementary to the first inclined surface of the slide case, and is disposed on the first inclined surface in alignment with the second inclined surface,

When the first screw hole of the pair of slide cases arranged opposite to each other and the attachment screw are inserted into the second screw hole of each taper washer and screwed into the panel, the convex portion and the concave portion of the slide case, And the cable packing body is compressed by the slide case, so that the periphery of the cable and the periphery of the cable packing body are kept watertight.

With this structure, water leakage between the pair of slide cases and the cable packing body and between the cable packing body and the cable can be made watertight, and leakage of water between them can be prevented.

Here, as the cable packing body, it is preferable to use an elastic body such as rubber.

Preferably, a slide packing is provided on the panel-side surface of the slide case. The slide packing is made of a material having a small frictional resistance with respect to the panel surface and coated on the panel-side surface, By applying lubricating oil to the panel-side surface, frictional resistance between the panel surface and the panel surface is reduced, thereby making it easier for the slide case to slip on the panel in the direction in which the cable packing member is crushed.

The cable packing body preferably has an annular protrusion at a substantially central portion in the through-hole direction of the inner wall of the through-hole, so that watertightness between the cable and the held cable can be further enhanced.

Preferably, the slide case has claws protruding inwardly from left and right portions of the first inclined surface, and when the taper washer is disposed on the first inclined surface in alignment with the second inclined surface, the slide case engages with the claw to prevent dropout.

It is preferable that the slide case has an elastic cylindrical body extending in the direction of the back surface of the slide case integrally provided on the inner wall of the first screw hole. Thus, in particular, when the cable clamp of the present invention is attached to the bottom panel or the side panel of the housing, the mounting screw can be temporarily fixed so as not to fall off.

According to the present invention, by using a first inclined surface provided on a pair of opposed slide cases and a second inclined surface provided on a taper washer complementary to the first inclined surface, The sliding tapered washer and the slide case between the panel relatively approach each other so that the sliding case and the cable packing body and the cable packing body and the cable can be watertightly pressed.

Further, since the force is applied even in the direction in which the slide case is pressed against the panel by tightening the attachment screw, the slide case and the panel can be pressure-welded.

1 is an exploded front view of an embodiment of a cable clamp of the present invention.
2 is a cross-sectional view taken along line AA of Fig.
3 is a front view of the cable holding the cable by the cable clamp of Fig.
Fig. 4 is a top view showing the cable clamp of Fig. 3 without showing the retained cable. Fig.
5 is a sectional view taken along the line BB in Fig.
6 is a cross-sectional view taken along line CC in Fig.
7 is an explanatory view of a method of opening a slit of a cable packing body to push the cable.
Fig. 8 shows a state in which the mounting screw 5 is removed in a sectional view taken along the line DD in Fig.
Fig. 9 is an exploded front view of an embodiment different from Figs. 1 to 8. Fig.
10 is a front view of the cable holding the cable by the cable clamp of Fig.
11 is a cross-sectional view taken along the line EE of Fig.

As shown in Figs. 2 and 5 to 6, the cable clamp of the present invention is attached to the peripheral edge of the opening 2 provided in the wall panel 1 of the housing housing the electric appliance to which the cable is connected. In the embodiment shown in Figs. 1 to 8, the cable clamp is provided with the cable packing bodies 4, 4 ', 4', 4 '' 'mounted on the cables 29, 29' A pair of slide cases 3 and 3 'for narrowing the cable packing bodies 4, 4', 4 '' and 4 '' 'mounted on the slide casings 29 and 29' 3 'and the tapered washers 13, 13' disposed between the slide cases 3, 3 'and the attachment screws 5, 5' .

The pair of slide cases 3 and 3 'have the same shape in this embodiment, and one of the slide cases 3' is arranged to face the other 3 in the upside down, as shown in FIG. 1, The slide case 3 will be described. The slide case is substantially box-shaped, and has a hollow portion 30 recessed from the lower surface toward the inside. The depth of the hollow portion 30 is set such that the cable packing bodies 4 and 4 'are accommodated in the hollow portions 30 and 30' of the pair of slide cases 3 and 3 'facing each other, 4 ', 4 ", 4'") in the case where the slide cases 3, 3 'are pressed against each other by sandwiching the cable packing elements 4, 4 " . The side walls 12 and 12 on the right and left sides of the hollow portion 30 are solid portions having a predetermined thickness in the left and right directions (left and right directions in FIG. 1) and front and back directions When the slide cases 3 and 3 'are disposed opposite to each other, the inner side surfaces of the slide cases 3 and 3' are pressed against the slide case 3 'facing each other. A convex portion 10 is provided on one of the left and right side walls 12 and 12 and a concave portion 11 is formed on the other pressing face so as to fit the convex portion.

1, three notches 14 ', 14 and 14' are provided on the front and back surfaces of the slide case 3 at the portion where the hollow portion 30 is provided, from the lower edge thereof in a substantially circular arc shape have. In this embodiment, the notches 14 at the center are small and the notches 14 'and 14' at both sides are large. However, the size and the number of the cutouts can be appropriately selected according to the diameter and the number of cables to be held have.

Slide packings 6 are fixed to the upper and lower edges of the rear surface of the slide case 3 from the pressing surface of the side wall 12 of the slide case 3 through the back surface as shown in Figs. This slide packing 6 is made of an elastic body and facilitates moving the slide case 3 in the vertical direction on the panel 1 and enhancing the airtightness of the opening 2 by the cable clamp.

As shown in Fig. 5, the front surface of each side wall 12 is provided with a pair of slide cases 3, 3 'extending from the lower edge toward the upper edge, that is, A sloped surface 7 which is one surface with the other part of the front surface of the slide case 3 and a bottom part 9 which is thinner in the front and back direction than the other part Is formed. At the center of the inclined surface 7, a first hole 15 having a diameter permitting insertion is provided in a state in which the mounting screw 5 is loosely fitted in the front and back direction of the slide case 3.

A taper washer 13 having a second inclined surface 16 complementary to the inclined surface 7 is mounted on the first inclined surface 7 of the side wall 12. [ The tapered washer (13) is provided with a hole (17) having a diameter enabling insertion and removal of the attachment screw (5) in a close contact state.

Fig. 8 shows a section along the line D-D in Fig. 1 in a state in which the mounting screws 5 are removed. An elastic tubular body 26 is integrally provided on the inner wall of the hole 15 provided in the inclined surface 7 of the side wall 12 toward the back surface of the case 3, A claw 25 is provided. The claw 25 prevents the attachment screw 5 from dropping when it is inserted into the tubular member 26. Further, claws 27 protruding inward are provided on the left and right side walls 12 of the inclined surface 7. When the taper washer 13 is mounted on the inclined surface 7, the upper end of the tapered washer 13 is engaged with the claw 27 of the side wall portion It is possible to prevent the taper washer 13 from falling off, particularly when the cable clamp 1 is attached to the bottom panel or the side panel of the housing. 8 shows the right side wall portion of the slide case 3, and the left side wall portion has a symmetrical structure with the left side wall portion.

A plurality of cable packing elements 4, 4 ', 4', 4 '' 'sandwiched by a pair of slide cases 3 and 3' The cable packing body 4 is a substantially rectangular parallelepiped member made of an elastic body such as rubber and has a substantially cylindrical through hole 22 'penetrating from the central portion of the front surface to the central portion of the back surface of the cable packing body 4. The through hole 22' The diameters of the through holes 22 'can be appropriately selected in accordance with the diameter of the cable 29 so that the cable 29 can be fitted in the cable 29. As shown in Figs. 2 and 6, An annular protrusion 24 is provided at the center and the diameter of the through hole 22 'is made smaller at this portion so as to improve the adhesion when fitting the cable 29. The peripheral surface of the packing body 4 For example, from the left side in this embodiment, And a slit 21 'communicating with the hole 22' is provided so as to penetrate from the front surface to the back surface.

Next, a method of attaching the slide case 3 and the cable packing body 4 having such a configuration to the peripheral edge of the opening 2 provided on the wall panel 1 of the housing by the attachment screw 5 will be described .

7, by opening the slit 21 'by elastically deforming the cable packing body 4, the cable 29' led out from the opening 2 into the through hole 22 ' . At this time, depending on the thickness of the cables 29, 29 ', 29 ", a plurality of cable packing bodies 4, 4', 4" having different sizes of through holes 22, 22 ', 22 " Quot ;, 4 "") can be used. In this embodiment, four cable packing elements 4 to 4 '" are arranged horizontally.

Next, the pair of slide cases 3 and 3 'are formed in the hollows 30 and 30', one side in the direction shown by reference numeral 3 in FIG. 1 and the other side in the upward and downward directions, Are arranged in front of the panel (1) at the peripheral edge of the opening (2) so as to face each other. The convex portion 10 provided on the pressing face of the slide case 3 faces the concave portion 11 'provided on the pressing face of the slide case 3' The concave portion 11 provided on the slide case 3 'faces the convex portion provided on the pressing face of the slide case 3'. The upper part of the cable packing body 4 to 4 '' 'is resiliently fitted in the hollow part 30 of the slide case 3 and the lower part thereof is buried in the hollow part 30' of the slide case 3 ' Sexually.

Also, when the pair of slide cases 3 and 3 'are disposed opposite to each other, the first inclined surfaces 7 and 7' are inclined downward from the inside toward the outside.

The second inclined surfaces 16 and 16 'of the tapered washers 13 and 13' are mounted on the first inclined surfaces 7 and 7 'of the slide cases 3 and 3' and the tapered washers 13 and 13 ' And the male screw 18 is inserted into the panel 1 through the first hole 17 and the second hole 15 from the side of the first hole 17 and the second hole 15, (19, 19 '). The panel 1 provided with the tapered washers 13 and 13 'and the female screws 19 and 19' close to the head of the attachment screws 5 and 5 'is positioned by the attachment screws 5 and 5' The first inclined surfaces 7 and 7 'on the side of the slide cases 3 and 3' and the first inclined surfaces 7 and 7 'of the tapered washer 13 (see FIG. 5) And the second inclined surfaces 16 and 16 'of the slide cases 3 and 3' on the side of the first holes 15 and 15 ' 'Are moved in the inner direction (arrow B in FIG. 5) of the mutually disposed opposites, that is, the pair of slide cases 3 and 3' move toward each other. At this time, the convex portion 10 and the concave portion 11 of the slide case 3 are engaged with the concave portion 11 'and the convex portion 10' of the slide case 3 ' 3 and 3 ') are correctly positioned in the left and right direction.

Finally, as shown in Fig. 5, the convex portions 10 and 10 'are completely fitted to the corresponding concave portions 11' and 11, The pressing surfaces of the side surfaces 12 'of the slide case 3' are brought into pressure contact with each other and the cable packing bodies 4 to 4 'sandwiched in the hollow portions 30 and 30' The depths of the hollow portions 30 and 30 'are set such that the cable packing bodies 4 to 4' 'are sandwiched inside the slide casings 3 and 3' Of the cable packing bodies 4 to 4 '", respectively, when the cable packing bodies 4 to 4' " are pressed in this manner. The circumference of the cables 29, 29 ', 29 "sandwiched between the through holes 22' and 22 '' is watertightly held. In particular, the annular protrusions 24 provided on the inner wall of the through holes 22 ' Part Minute.

The first inclined surfaces 7 and 7 'on the side of the slide cases 3 and 3' and the second inclined surfaces 16 and 16 'on the side of the tapered washers 13 and 13' 3 'and the panel 1 are also hermetically held by the slide packings 6 provided on the back surface because the force acts also in the direction in which the slide cases 3, 3' do.

The sizes of the cutouts 14 and 14 'provided on the front and rear surfaces of the slide cases 3 and 3' are the same as those of the cable packing bodies 4 to 4 ' The cable 29, 29 ', 29 "sandwiched in the through holes 22, 22', 22" can pass through the notches 14, 14 'arranged opposite to each other.

9 to 11 show a second embodiment of the present invention. In this embodiment, the cable case 4, 4 ', 4' ', 4' '' is provided in two rows of cables 19, 19 'and 19' 'and 119, 119' And 104, 104 ', 104 ", 104 ", 104 " " The structural difference from the above-described first embodiment is a fixed case 3 " which is arranged across the center of the opening 2 of the panel 1 and fixed to the panel 1 with an attaching screw 105. The fixed case 3 "has the same structure portion as the pressure contact surfaces of the hollow portions 30, 30 'and the side walls 12, 12' of the slide cases 3, 3 ' The convex portions 110 and 110 'and the concave portions 111 and 111' which are the same as the convex portions 10 and 10 ', the concave portions 11 and 11' and the cutouts 14 and 14 ' And cutouts 114, 114 ', and 114 " are also provided. The slide casings 3 and 3 'similar to those of the first embodiment are disposed on both upper and lower sides of the fixed case 3 "and the tapered washer (not shown) is formed by aligning the inclined surfaces 7, 7' 13, 13 ') are mounted and fixed by screwing the mounting screws 5, 5' into the panel 1. Figs. 10 and 11 show states corresponding to Figs. 3 and 5, respectively, in which the cables 19, 19 ', 19 "and 119, 119' , 104 ', 104 ", 104' '', 104" '') sandwiched between the cable cases (121, 121 ' 3 and the hollow portion of the fixed case 3 "and the hollow portion of the slide case 3 '.

Although the second embodiment is of two stages in the upper and lower directions, it is possible to finish the cable clamp of the same configuration even if it is three or more stages.

One… Panel 2 ... The opening of the panel
3, 3 '... Slide case
4, 4 ', 4'',4''; 104, 104', 104 ', 104''... Cable packing body
5, 5 ', 105 ... Attachment screws 6, 6 '... Slide packing
7, 7 '... The first inclined surface 10; 110 '... Convex portion
11; 111 '... The concave portions 12, 12 '... Side wall
13, 13 '... Taper washer 14, 14 '; 114, 114', 114 " The cut-
15, 15 '... The first holes 16, 16 '... The second inclined surface
17, 17 '... The second hole
21, 21 ', 21'',121', 121 ', 121'' Slit
22, 22 ', 22 "... Through hole 24 ... Annular projection
25 ... Claw 26 ... Cylindrical body
27 ... Claw

Claims

CLAIMS 1. A cable clamp for holding a cable derived from an opening of a panel on a surface of a panel,
A cable packing body mounted on the cable,
A pair of slide cases for narrowing the cable packing body mounted on the cable from both upper and lower sides,
An attachment screw for attaching each slide case to the panel,
And a taper washer disposed between each slide case and the attachment screw,
Wherein the cable packing body has a through hole through which a cable is inserted and a slit through which a cable that passes from the side to the through hole passes,
Wherein each of the pair of slide cases has a convex portion or a concave portion on the inner side surface when a pair of the slide cases are arranged to face each other and when the pair of the convex portions and the concave portions are arranged so as to face each other, The slide case is disposed at a position corresponding to the concave portion of the slide case,
Each of the slide cases further has a first screw hole through which the mounting screw is smoothly fitted and a first inclined surface inclined downward from the inner surface when the pair of slide cases are arranged to face the outer surface,
Wherein the taper washer has a second screw hole through which the mounting screw passes, and a second inclined surface that is complementary to the first inclined surface of the slide case, and is disposed on the first inclined surface in alignment with the second inclined surface,
When the first screw hole of the pair of slide cases arranged opposite to each other and the attachment screw are inserted into the second screw hole of each taper washer and screwed into the panel, the convex portion and the concave portion of the slide case, And the cable packing body is compressed by the slide case, so that the periphery of the cable and the periphery of the cable packing body are kept watertight.

The cable clamp according to claim 1, wherein the cable packing body is an elastic body.

The slide case according to claim 1 or 2, wherein a slide packing is provided on a surface of the slide case on the panel side, the slide packing is made of a material having a small frictional resistance with respect to the panel surface, Wherein the friction resistance between the surface of the panel and the surface of the panel is reduced by coating the surface of the panel or by applying lubricating oil to the surface of the panel.

2. The cable clamp according to claim 1, wherein the cable packing body has an annular protrusion at a central portion of the through-hole inner wall in a penetrating direction.

The slide fastener according to claim 1, wherein the slide case has a claw protruding inward from right and left portions of the first inclined surface, and when the taper washer is disposed on the first inclined surface in alignment with the second inclined surface, The cable clamp being characterized in that the cable clamp is prevented.

The cable clamp according to claim 5, wherein the slide case has an elastic tubular body integrally formed on the inner wall of the first screw hole and extending in the direction of the back surface of the slide case.