KR20120128578A

KR20120128578A - Cable clamp

Info

Publication number: KR20120128578A
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: 2012-11-27
Also published as: KR101862849B1; CN102790464A; JP2012243860A; CN102790464B; TWI543485B; TW201306410A; JP5722701B2

Abstract

The cable clamp of the present invention for holding a cable derived from an opening of a panel on the surface of the panel includes a cable packing body for mounting on the cable, a pair of slide cases for clamping the cable packing body from both sides of the panel, and each slide case. And a tapered washer disposed between the slide case and the attachment screw. The cable packing body has a through hole through which the cable is inserted and a slit passing from the side to the through hole. Each of the pair of slide cases has a convex portion or a concave portion on an inner side surface when the pair of slide cases are opposed to each other, and when the convex portion and the concave portion are disposed opposite, the convex portions of one slide case correspond to the concave portions of the other slide case. Is placed in position. The slide case also has a first screw hole into which the attachment screw is loosely fitted, and a first inclined surface inclined downward from the inner side when the pair is opposed to the outer side. The tapered washer has a second screw hole through which the attachment screw penetrates, and a second inclined surface that is complementary to the first inclined surface of the slide case, and is disposed to fit the second inclined surface on the first inclined surface. When the first screw hole of the pair of opposing slide cases and the second screw hole of each tapered washer are inserted and twisted into the panel, the convex portions and the concave portions of the opposing slide cases are engaged. 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 kept waterproof.

Description

Cable Clamp {CABLE CLAMP}

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a cable clamp for holding a cable, and more particularly, to attach to a peripheral edge of an opening provided in a wall panel of a housing housing various electrical equipment, and to supply the output from the electrical equipment to the outside. A cable clamp is provided for holding a cable drawn out of an opening.

Background Art Conventionally, as shown in Japanese Patent No. 3431355, a cable clamp composed of a plurality of blocks arranged adjacent to each other in a vertical direction on a wall panel of a housing is known. In order to hold a cable between two adjacent blocks, each block is provided with the hollow part in the surface which opposes the adjacent block, and the elasticity of the small block body which has a substantially semi-cylindrical recess which hold | maintains a cable in this hollow part. The packing is detachably mounted. The front and rear surfaces of the block defining this hollow portion are provided with roughly semi-circular cutouts corresponding to the recesses of the elastic packing, and the cable is held between the recesses of the elastic packing and two adjacent blocks by the cutouts. .

In order to attach such a conventional cable clamp to the circumferential edge of the opening of the wall panel from which the cable is drawn, first insert the cable with two adjacent opposing elastic packings, and also attach each elastic packing to the hollow part of the block to The blocks are sandwiched and then fixed to each other by a long screw that penetrates the plurality of blocks adjacent in the vertical direction. After the fixing is in place, 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 a cable clamp to a panel in the state which hold | maintained the cable, the screw of two directions needed to be fastened, and there existed a subject that a lot of work took.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a cable clamp which improves workability of attachment by simultaneously holding the cable and fixing the cable clamp to the panel only by tightening the screw in one direction.

The present invention solves the above problems, and the gist of the present invention is a cable clamp for holding a cable drawn from an opening of a panel on a panel surface.

Cable packing body to be attached to the cable

A pair of slide cases which clamp the cable packing body which attached to the cable from the upper and lower sides,

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

Having a tapered washer disposed between each slide case and the attachment screw,

The cable packing body has a through hole through which the cable is inserted and a slit for passing the cable 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 when the pair is opposed to each other, and the convex portion and the concave portion of the slide case when the pair is opposed to each other are arranged on the other side. It is arranged in the position corresponding to the recessed part of the slide case,

Each slide case also has a first screw hole into which the attachment screw is loosely fitted, and a first inclined surface inclined downward from the inner side when the pair of slide cases are disposed to the outer side,

The tapered washer has a second screw hole through which the attachment screw penetrates, and a second inclined surface that is complementary to the first inclined surface of the slide case, and is disposed to fit the second inclined surface on the first inclined surface,

The convex portion and the concave portion of the opposing slide case are inserted into the panel by inserting the attachment screw into each of the first screw holes of the pair of opposed slide cases and the second screw holes of the respective tapered washers. In addition to the engagement, 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 waterproof.

This structure makes watertight between a pair of slide cases and a cable packing body, and between a cable packing body and a cable, and can prevent the leakage from between them.

Here, it is preferable to use elastic bodies, such as rubber | gum, as a cable packing body.

Preferably, the slide packing is provided on the panel side of the slide case, the slide packing is made of a material which is elastic and has a low frictional resistance between the panel surface, and the surface of the slide side is coated. By applying lubricating oil to the surface on the panel side, the frictional resistance between the panel surface is reduced, so that the slide case slides on the panel in the direction of crushing the cable packing body.

The cable packing body preferably has an annular projection at a substantially center portion in the penetrating direction of the inner wall of the through hole, whereby the watertightness between the cable and the held cable can be made higher.

Preferably, when the slide case has a claw projecting inwards to the left and right portions of the first inclined surface, and the tapered washer is placed on the first inclined surface in alignment with the second inclined surface, the slide case is engaged with the claw to prevent the fall.

It is preferable that the slide case has an elastic tubular body extending in the direction of the back surface of the slide case integrally provided on the inner wall of the first screw hole. In this way, particularly when the cable clamp of the present invention is attached to the bottom panel or side panel of the housing, the attachment screw can be temporarily fixed to prevent it from falling off.

According to the present invention, by using a first inclined surface provided on a pair of slide cases disposed to face each other and a second inclined surface provided on a tapered washer complementary to the first inclined surface, the mounting screws penetrating them are screwed into the panel. When inserted and tightened, the slide case between the floating tapered washer and the panel is relatively close to each other, so that the slide case and the cable packing body and the cable packing body and the cable can be tightly pressed.

Moreover, since the force is applied also in the direction which pushes a slide case to a panel by tightening this attachment screw, it can press-tightly contact between a slide case and a panel.

1 is an exploded front view of one embodiment of a cable clamp of the present invention.
2 is a cross-sectional view taken along line AA of FIG. 1.
3 is a front view of the cable holding state by the cable clamp of FIG.
FIG. 4 is a top view of the cable clamp of FIG. 3, not showing the held cable. FIG.
5 is a cross-sectional view taken along line BB of FIG. 3.
6 is a cross-sectional view taken along line CC of FIG. 3.
It is explanatory drawing of the method of opening a slit of a cable packing body, and pushing a cable.
FIG. 8 shows a state where the attachment screw 5 is removed in the cross-sectional view along the line DD of FIG. 1.
9 is an exploded front view of an embodiment different from FIGS. 1 to 8.
FIG. 10 is a front view of a state where the cable is held by the cable clamp of FIG. 9. FIG.
FIG. 11 is a cross-sectional view taken along line EE of FIG. 10.

As shown in FIGS. 2 and 5 to 6, the cable clamp of the present invention is attached to the circumferential edge of the opening 2 provided in the wall panel 1 of the housing housing the electric device to which the cable is connected. In the embodiment shown in Figs. 1 to 8, the cable clamp is a cable packing body (4, 4 ', 4 ", 4'") to be attached to the cables (29, 29 ', 29 "), and the cable (29, A pair of slide cases 3, 3 'for clamping the cable packing bodies 4, 4', 4 ", 4 '" mounted on the 29', 29 ") from both the upper and lower sides, and each slide case 3, Attachment screws 5, 5 'for attaching 3') to panel 1, and tapered washers 13, 13 'disposed between each slide case 3, 3' and attachment screws 5, 5 '. ).

The pair of slide cases 3 and 3 'have the same shape in this embodiment, and as shown in Fig. 1, one side 3' is disposed to face the other 3 in an upside down direction. The slide case 3 will be described. The slide case is substantially box-shaped and has a hollow portion 30 recessed inward from the lower surface. As described later with reference to FIG. 6, the depth of the hollow portion 30 is the cable packing body 4, 4 ′ in the hollow portions 30, 30 ′ of the pair of opposing slide cases 3, 3 ′. , 4 ”, 4 '"), the depth that the cable packing bodies 4, 4', 4 ", 4 '" can be compressed from the top and the bottom when the slide cases 3 and 3' are pressed together. It is. The side walls 12 and 12 on the left and right sides of the hollow part 30 are solid parts having a predetermined thickness in the left and right directions (left and right directions of FIG. 1) and front and back directions (the left and right directions of FIG. 5), and a lower surface, that is, a pair of The inner surface when the slide cases 3 and 3 'are disposed facing each other is a crimped surface with the slide case 3' facing each other. The convex part 10 is provided in one crimping surface among the left and right both side walls 12 and 12, and the recessed part 11 which can fit this convex part is provided in the other crimping surface, respectively.

Referring to FIG. 1, three cutouts 14 ′, 14, 14 ′ are provided on the front and rear surfaces of the slide case 3 at the portion where the hollow portion 30 is installed, in an arc shape from the lower edge. have. In this embodiment, the center cutout 14 is small and the cutouts 14 'and 14' on both sides are large, but the size and number of these cutouts can be appropriately selected depending on the diameter and number of cables to be maintained. have.

As shown to FIG. 2, 5, and 6, the slide packing 6 is adhered to the back surface from the crimping surface of the side wall 12 of the slide case 3, and to the upper and lower edges of the back surface of the slide case 3. As shown in FIG. The slide packing 6 is made of an elastic body, which makes the slide case 3 easy to move up and down on the panel 1 and increases the airtightness of the opening 2 by the cable clamp.

As shown in FIG. 5, the front surface of each side wall 12 is directed from the lower edge toward the upper edge, that is, downward from the inner side to the outer side when the pair of slide cases 3 and 3 'are disposed to face each other. The inclined first inclined surface 7 is provided, and the bottom part 9 which is thinner in the front and back direction than the other part of the front surface of the slide case 3, the inclination surface 8, the inclined surface 7, and the other part. ) Is formed. In the center of the inclined surface 7, a first hole 15 having a diameter that can pass through the insertion hole is drilled while the attachment screw 5 is loosely inserted in the front and back direction of the slide case 3.

On the first inclined surface 7 of the side wall 12, a tapered washer 13 having a second inclined surface 16 complementary to the inclined surface 7 is mounted. The tapered washer 13 is bored with a hole 17 having a diameter that allows the insertion screw 5 to be in close contact with the insertion screw.

FIG. 8 shows the cross section along the line D-D in FIG. 1 with the attachment screw 5 removed. On the inner wall of the hole 15 provided in the inclined surface 7 of the side wall 12, an elastic cylindrical body 26 is integrally provided toward the case 3 back surface direction, and its tip protrudes inward in the radial direction. A claw 25 is provided. The claw 25 prevents the fall of the attachment screw 5 when the mounting screw 5 is inserted into the cylindrical body 26. Moreover, the claw 27 which protrudes inward is provided in the side wall 12 part of the left and right sides of the inclined surface 7. As shown in FIG. The lower part of the tapered washer 13 has a large diameter portion at its outer circumference, and when the tapered washer 13 is mounted on the inclined surface 7, the upper end of the large diameter portion is engaged with the claw 27 of the side wall portion. As a result, the tapered washer 13 can be prevented from falling off, particularly when the cable clamp 1 is attached to the bottom panel or side panel of the housing. 8 shows the right side wall part of the slide case 3, but the left side wall part has the structure symmetrical with this.

The plurality of cable packing bodies 4, 4 ', 4 ", 4'" sandwiched by a pair of slide cases 3, 3 'are each attached to a cable, hereinafter one cable packing body 4 The cable packing body 4 is a member of a substantially rectangular parallelepiped made of an elastic body such as rubber, and has a substantially cylindrical through hole 22 'penetrating from the front center portion to the rear surface center portion. ) Can be appropriately selected in accordance with the diameter of the cable 29 so that the cable 29 can be fitted in. As shown in Figs. 2 and 6, the through direction of the inner wall of this through hole 22 'is approximately. An annular projection 24 is provided in the center portion, and the diameter of the through hole 22 'is made small at this portion to improve the adhesiveness when the cable 29 is fitted in. The peripheral surface of the packing body 4 One, for example, in this embodiment, penetrates from the left side A slit 21 'leading through the hole 22' is penetrated from the front surface to the back surface.

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

First, as shown in FIG. 7, the cable 29 'led out from the opening 2 to the through hole 22' by elastically deforming the cable packing body 4 and opening the slit 21 '. Insert At this time, the plurality of cable packing bodies 4, 4 ', 4 of different overall sizes having through holes 22, 22', 22 "of different diameters, depending on the thickness of the cables 29, 29 ', 29". 4 '"). In this embodiment, four cable packing bodies 4-4'" are arrange | positioned horizontally.

Next, the pair of slide cases 3 and 3 'is positioned in the up and down direction so that one is shown in the direction indicated by reference numeral 3 in FIG. 1 and the other is indicated by reference numeral 3'. It arrange | positions in front of the panel 1 in the peripheral edge of the opening 2 so that mutually opposes. When it arranges in this way, the convex part 10 provided in the crimping surface of the slide case 3 opposes the recessed part 11 'provided in the crimping surface of the slide case 3', and the crimping surface of the slide case 3 is carried out. The concave portion 11 provided on the side thereof faces the convex portion provided on the pressing face of the slide case 3 '. Here, the upper part of the cable packing body 4-4 '"is elastically fitted in the hollow part 30 of the slide case 3, and the lower part is burnt in the hollow part 30' of the slide case 3 '. Put sexually.

When the pair of slide cases 3 and 3 'are disposed in this manner, the first inclined surfaces 7 and 7' are inclined downward from the inside to 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 'are mounted. The internal thread which penetrates the 1st hole 17 and the 2nd hole 15 from the side), and inserts the attachment screws 5 and 5 'which are head bolts, and installs the male screw 18 to the panel 1. Screw on (19, 19 '). Thus, the taper washers 13 and 13 'which are close to the heads of the mounting screws 5 and 5' and the panel 1 in which the female threads 19 and 19 'are installed are positioned by the mounting screws 5 and 5'. When the fixing screws 5 and 5 'are fastened in the direction of arrow A in Fig. 5 in the fixed state, the first inclined surfaces 7 and 7' and the tapered washers 13 on the slide cases 3 and 3 'side are fastened. 2nd inclined surfaces 16 and 16 'on the 13' side are in a press-contact state, and the slide cases 3 and 3 in which the mounting screws 5 and 5 'are loosely fitted into the first holes 15 and 15'. ') Moves inwardly facing each other (arrow B in Fig. 5), that is, in a direction in which a pair of slide cases 3 and 3' approach 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 ', respectively, and the slide case ( 3 and 3 ') are correctly positioned in the left and right directions.

And finally, as shown in FIG. 5, each convex part 10 and 10 'is fully fitted in the corresponding recessed part 11' and 11, and the two side walls 12 of the slide case 3 The crimping surface and the crimping surfaces of both side walls 12 'of the slide case 3' are press-bonded, and as shown in FIG. 6, the cable packing body 4-4 'sandwiched between the hollow portions 30 and 30'. The upper and lower surfaces of the " " are pressed. That is, as described above, the depths of the hollow portions 30 and 30 'are held between the slide cases 3 and 3' by sandwiching the cable packing bodies 4 to 4 '. Is a depth that can compress the cable packing bodies 4 to 4 '"from the top and the bottom in this way. Thus, the through-holes 22 of the cable packing bodies 4 to 4' " 22 ', 22'), the periphery of the cables 29, 29 ', 29 "are kept tight, and in particular, the annular projection 24 provided on the inner wall of the through hole 22' is pressed against the cable. Wealth In minutes, the degree increases.

In addition, the first inclined surfaces 7 and 7 'on the slide cases 3 and 3' and the second inclined surfaces 16 and 16 'on the tapered washers 13 and 13' are brought into a press-welded state, whereby the slide case ( Since the force also acts in the direction in which the 3 and 3 'are pressed against the panel 1, the airtight holding between the slide cases 3 and 3' and the panel 1 is also maintained by the slide packing 6 provided on the back surface. do.

In addition, 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 '"in the press-contacting state shown in FIGS. The cables 29, 29 ', and 29 "fitted into the through holes 22, 22', and 22" are passed through the cutout portions 14 and 14 'which are arranged to face each other.

9-11, the 2nd Embodiment of this invention is shown. In this embodiment, the cable case 4, 4 ', 4', 4 '"is provided in two rows of cables 19, 19', 19", and 119, 119 ', 119 ", each having a slide case as a two-lane lane. And 104, 104 ', 104 ", 104'", 104 "". The structural difference from the first embodiment described above is a fixing case 3 ″ which is disposed across the central portion of the opening 2 of the panel 1 and fixed to the panel 1 with the attachment screw 105. This fixed case 3 "is provided with the same structural part as the pressure-contacting surface of the hollow part 30, 30 'of the slide cases 3, 3', and the side walls 12, 12 ', and the slide case 3". Convex portions 10 and 10 ', concave portions 11 and 11', and convex portions 110 and 110 ', which are the same as notches 14 and 14', and concave portions 111 and 111 '. ), And notches 114, 114 ', 114 "are also provided. Slide cases 3 and 3 ', which are the same as those in the first embodiment, are disposed on the upper and lower sides of the fixed case 3', respectively, and the inclined surfaces 7 and 7 'are aligned with the inclined surfaces 16 and 16', respectively. 13, 13 '), and fix it by screwing the attachment screws 5, 5' into the panel 1. FIG. 10 and 11 show states corresponding to Figs. 3 and 5, respectively, and the cables 19, 19 ', 19 "and 119, 119', 119" of various diameters are slit 21, 21 ', 21 ". And cable packing bodies 4, 4 ', 4', 4 '"and 104, 104', 104", 104 '", 104" "sandwiched from 121', 121", 121 '". 3) and the hollow portion of the fixed case 3 'and the hollow portion of the fixed case 3' and the slide case 3 'are elastically sandwiched and compressed.

In addition, although a 2nd embodiment is a thing of two steps of upper and lower sides, even if it is three or more steps, the cable clamp of the same structure can be completed.

One… Panel 2... Opening of panel
3, 3 '... Slide case
4, 4 ', 4', 4 '"; 104, 104', 104", 104 '"... Cable packing
5, 5 '; 105... Mounting screws 6, 6 '... Slide packing
7, 7 '... First inclined plane 10; 110 '... Convex portion
11; 111 '... Recesses 12, 12 '... Side wall
13, 13 '... Tapered washers 14, 14 '; 114, 114', 114 "... The cut-
15, 15 '... First holes 16, 16 '... Second slope
17, 17 '... Second hole
21, 21 ', 21 ";121', 121 ', 121"... Slit
22, 22 ', 22 ”... Through hole 24... Annular projection
25... Claw 26... Tubular
27 ... Claw

Claims

In the cable clamp for holding the cable drawn from the opening of the panel on the panel surface, the cable clamp,
Cable packing body to attach to cable,
A pair of slide cases which clamp the cable packing body which attached to the cable from the upper and lower sides,
An attachment screw for attaching each slide case to the panel,
Having a tapered washer disposed between each slide case and the attachment screw,
The cable packing body has a through hole through which the cable is inserted and a slit for passing the cable 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 when the pair is opposed to each other, and the convex portion and the concave portion of the slide case when the pair is opposed to each other are arranged on the other side. It is arranged in the position corresponding to the recessed part of the slide case,
Each slide case also has a first screw hole into which the attachment screw is loosely fitted, and a first inclined surface inclined downward from the inner side when the pair of slide cases are disposed to the outer side,
The tapered washer has a second screw hole through which the attachment screw penetrates, and a second inclined surface that is complementary to the first inclined surface of the slide case, and is disposed to fit the second inclined surface on the first inclined surface,
The convex portion and the concave portion of the opposing slide case are inserted into the panel by inserting the attachment screw into each of the first screw holes of the pair of opposed slide cases and the second screw holes of the respective tapered washers. The cable clamp is compressed, 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 waterproof.

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

3. The slide packing according to claim 1 or 2, wherein a slide packing is provided on the panel side of the slide case, the slide packing is made of a material having an elastic body and a small frictional resistance between the panel surface. A cable clamp, characterized in that the frictional resistance between the panel surface is reduced by coating the surface or applying lubricant to the surface on the panel side.

The cable clamp according to any one of claims 1 to 3, wherein the cable packing body has an annular projection at a substantially center portion in the penetrating direction of the inner wall of the through hole.

The said slide case has the claw which protrudes inward in the left and right parts of the said 1st inclined surface, and arrange | positions the said tapered washer on the 1st inclined surface in alignment with the 2nd inclined surface. The cable clamp, characterized in that when engaged with the claw to prevent the fall.

6. The cable clamp according to claim 5, wherein the slide case has an elastic tubular body extending in the direction toward the back of the slide case, which is integrally provided on the inner wall of the first screw hole.