TW201306410A - Cable clamp - Google Patents

Abstract

This invention provides a cable clamp for holding a cable extending from an opening of a panel by a panel surface. The cable clamp has a cable sealing member to be fixed onto the cable, a pair of slide cases which clamp the sealing member from its upper and lower sides, fixing screws for fixing each slide case onto the panel, and tapered washers placed between the slide cases and the fixing screws. The cable sealing member has a through hole allowing the cable to pass there through, and a slot communicating with the through hole from one side. Each one of the pair of slide cases has a protrusion or a recess on the inner side such that when the slide cases are placed to face each other a protrusion of one slide case is in the position to correspond with the recess of another one of the slide cases. The slide case further has a first screw hole in which a fixing crew is loosely fitted, and a first inclined surface which is inclined downwards from the inner side surface to the outer side when the pair is disposed to face each other. The tapered washer has a second screw hole allowing the fixing screw to pass therethrough and a second inclined surface complementary with the first inclined surface of the slide case, and is disposed on the slide case such that the second inclined surface matches the first inclined surface. By inserting the fixing screws through first screw holes of the pair of slide cases disposed to face each other and the second screw holes of each tapered washer and screwing the screws into the panel, the protrusion and recess of the pair of slide cases disposed to face each other are engaged with each other and the cable sealing member is compressed, thereby the periphery of the cable and the periphery of the cable sealing members are held in the state of waterproof.

Description

Wire clamp

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a wire clamp for holding a wire, and more particularly to a periphery of an opening provided in a wall panel of a frame in which various motor machines are housed, in order to maintain the machine from the motor. A wire clamp that supplies the wire that is supplied to the outside and is led out from the opening is output.

In the prior art, for example, as shown in Japanese Patent No. 3431355, a wire clamp is formed of a plurality of blocks arranged adjacent to each other in the vertical direction on the wall panel of the casing. In order to maintain the wire between adjacent two pieces, each piece is provided with a hollow on a face opposite the adjacent piece, and within the hollow there will be a substantially semicircle for holding the wire The elastic pad of the small piece of the cylindrical recess is detachably mounted. The concave portion corresponding to the elastic pad is provided with a substantially semicircular cutout portion in front of and behind the block defining the hollow portion, and the wire is held adjacent by the concave portion of the elastic pad and the cutout portion. Between two pieces.

In order to mount such a conventional wire clamp to the periphery of the opening of the wall panel from which the wire is led, the wires are first held by the adjacent and opposite elastic pads, and the elastic pads are then mounted. The hollow portion of the block is sandwiched by the adjacent block members, and then a plurality of blocks adjacent in the vertical direction are fixed to each other by a long screw penetrating in the vertical direction. After the fixed state is formed, the wire clamp is attached to the wall panel by using other screws penetrating from the front surface to the rear surface of the block. That is, in order to fix the wire clamp to the panel while the wire is held, the two sides must be locked. Because of the screw, there is a problem that the work is troublesome.

The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a wire clamp capable of simultaneously fixing a wire and fixing a wire clamp to a panel as long as the screw is locked in one direction, thereby improving the mounting workability. With.

The present invention is directed to solving the aforementioned problems, and the gist thereof is a wire clamp for holding an electric wire derived from an opening of a panel on a surface of a panel, the wire clamp having: a wire pad body mounted on the wire (packing) Member); a pair of sliding boxes that are attached to the wire pad body of the wire from the upper and lower sides; mounting screws for mounting the sliding boxes to the panel; and a wedge shape disposed between each of the sliding boxes and the mounting screws a gasket; the wire gasket body has: a through hole through which the power supply wire is inserted; and a slit that passes from the side portion to the through hole and through which the electric wire passes; each of the pair of sliding boxes is opposite to each other a convex portion or a concave portion is provided on the inner side surface of the arrangement, and the convex portion and the concave portion are disposed at positions where the convex portions of one of the sliding boxes are arranged to correspond to the concave portions of the other sliding case when the pair is opposed to each other, and each of the sliding boxes a first screw hole that can be fitted by the mounting screw; and an inner side surface when the pair of sliding boxes are opposed to each other a first inclined surface that is lowered and inclined on the side; the wedge washer has a second screw hole through which the mounting screw is inserted; and a second inclined surface complementary to the first inclined surface of the slide case; and the wedge washer is aligned (2) The inclined surface is disposed on the first inclined surface, and the mounting screw is inserted into each of the first screw holes of the pair of slide boxes that are disposed to face each other, and the second screw hole of each of the wedge washers is screwed into the panel. The aforementioned convex portion of the slide case that is disposed oppositely engages with the concave portion, and the wire pad body is compressed by the slide case, so that the periphery of the wire and the periphery of the wire pad body can be waterproofly held.

With this configuration, a watertight state can be formed between the pair of slide boxes and the wire pad body, and between the wire pad body and the electric wires, and water leakage between them can be prevented.

Here, it is preferable to use an elastic body such as rubber as the wire pad body.

Preferably, a sliding pad is provided on the panel side of the sliding case, and the sliding pad is an elastic body and is made of a material having a small frictional resistance with the panel surface, and is formed on the panel side. The coating is applied or the lubricating oil is applied on the side of the panel to reduce the frictional resistance with the panel surface, thereby making it easy for the sliding box to slide on the panel in the direction in which the wire cushion body is pressed.

It is preferable that the wire pad body has an annular projection at a substantially central portion in the penetration direction of the inner wall of the through hole, whereby the watertightness with the held electric wire can be further improved.

Preferably, the slide case has a claw portion that protrudes inward on the left and right side portions of the first inclined surface, and when the wedge washer is placed on the first inclined surface with respect to the second inclined surface, the slider is engaged with the claw portion to prevent falling off. .

Preferably, the slide case has an elastic cylindrical body integrally provided on the inner wall of the first screw hole and extending in the direction of the inner surface of the slide case. Thereby, especially when the wire clamp of the present invention is attached to the bottom panel or the side panel of the frame, the mounting screws can be temporarily fixed to avoid falling off.

According to the invention of the present invention, the first inclined surface provided on the pair of oppositely disposed slide boxes and the second inclined surface provided on the wedge washer complementary to the first inclined surface are used for mounting the inclined surfaces. When the screw is screwed into and locked into the panel, the sliding box between the stationary wedge washer and the panel will be relatively close to each other, and the sliding between the sliding box and the wire pad body, and between the wire pad body and the wire can be watertightly pressed. Pick up.

Further, by locking the mounting screw, force is applied in the direction in which the slide case is pressed against the panel, so that the slide case and the panel can be pressure-tightly pressed.

The electric wire clamp of the present invention is attached to the periphery of the opening 2 provided in the wall panel 1 of the casing in which the electric motor device to which the electric wire is connected, as shown in Figs. 2 and 5 to 6. In the embodiment shown in FIGS. 1 to 8, the wire clamp has: wire mat bodies 4, 4', 4", 4"' mounted on the electric wires 29, 29', 29"; a pair of slide boxes 3, 3' that are attached to the wire pad bodies 4, 4', 4", 4"' of the wires 29, 29', 29" from the upper and lower sides; 3' mounting screws 5, 5' mounted on the panel 1, and wedge washers 13, 13' disposed between the respective sliding boxes 3, 3' and the mounting screws 5, 5'.

The pair of slide boxes 3, 3' are the same in this embodiment, and as shown in Fig. 1, the one (3') is disposed opposite to the other (3) in the up-and-down direction, and therefore The following describes a slide box 3. The slide case is substantially box-shaped and has a hollow portion 30 recessed from the bottom toward the inside. The depth of the hollow portion 30 is as described later with reference to Fig. 6, and the wire mat bodies 4, 4', 4", 4"' are clamped in the hollow of the pair of opposite sliding boxes 3, 3'. In the portions 30, 30', when the slide boxes 3, 3' are pressed against each other, the depth of the wire mat bodies 4, 4', 4", 4"' can be compressed from above and below. The side walls 12 and 12 on the left and right sides of the hollow portion 30 have a solid portion having a predetermined thickness in the left-right direction (the horizontal direction in the first drawing) and the front and back directions (the horizontal direction in the fifth drawing), and the lower side, that is, the pair The inner side surface when the slide boxes 3, 3' are opposed to each other is a pressure contact surface which is formed with the opposing slide case 3'. One of the left and right side walls 12 and 12 is provided with a convex portion 10, and the other pressure-bonding surface is provided with a concave portion 11 into which the convex portion can be fitted.

Referring to Fig. 1, three substantially arcuate cutout portions 14', 14, 14' are provided from the lower edge on the front and back surfaces of the slide case 3 in which the hollow portion 30 is provided. In this embodiment, the central cutout portion 14 is smaller, and the cutout portions 14', 14' on both sides are larger, but the size and number of the cutout portions can be appropriately determined according to the diameter and the number of wires to be held. Ground selection.

As shown in Figs. 2, 5 and 6, the sliding pad 6 is fixed from the pressure contact surface of the side wall 12 of the slide case 3 to the inner surface and the lower edge portion of the inner surface of the slide case 3. The sliding pad 6 is made of an elastic body, and the slide case 3 can be easily moved in the vertical direction on the panel 1, and the airtightness of the opening 2 by the wire clamp can be improved.

As shown in Fig. 5, the first side of each side wall 12 is provided with the first edge from the lower edge to the upper edge, that is, the inner side surface when the pair of slide boxes 3, 3' are opposed to each other, and is inclined downward toward the outer side surface. The inclined surface 7 is formed to form the top portion 8, the inclined surface 7, and the bottom portion 9 which are thinner than the other portions in the same plane as the other portions of the front surface of the slide case 3. In the center of the inclined surface 7, the first hole 15 having a diameter through which the mounting screw 5 can be inserted in a state of being inserted is provided in the front and back direction of the slide case 3.

A wedge-shaped washer 13 having a second inclined surface 16 complementary to the inclined surface 7 is placed on the first inclined surface 7 of the side wall 12. A hole 17 having a diameter through which the mounting screw 5 can be inserted in a close contact state is formed in the wedge washer 13.

Fig. 8 is a cross-sectional view taken along the line D-D of Fig. 1 in a state in which the mounting screws 5 are removed. The inner wall of the hole 15 provided in the inclined surface 7 of the side wall 12 is integrally provided with an elastic cylindrical body 26 toward the inner surface of the casing 3, and a claw portion 25 projecting radially inward is provided at the front end thereof. The claw portion 25 is for preventing the mounting screw 5 from falling when it is inserted into the tubular body 26. Further, a claw portion 27 that protrudes inward is provided on a portion of the side wall 12 on the left and right sides of the inclined surface 7. The lower portion of the wedge washer 13 is such that a large diameter portion is formed on the outer circumference. When the wedge washer 13 is placed on the inclined surface 7, the upper end of the large diameter portion is engaged with the claw portion 27 of the side wall portion, so that the wire is particularly When the clamp 1 is attached to the bottom panel or the side panel of the frame, the falling of the wedge washer 13 can be prevented. Further, although Fig. 8 shows the right side wall portion of the slide case 3, the left side wall portion is formed to be symmetrical with the right side wall portion.

The plurality of wire mat bodies 4, 4', 4", 4"' held by the pair of slide boxes 3, 3' are respectively attached to the electric wires, but the following is for one electric wire mat body. 4 to explain. The wire pad body 4 is a substantially cubic member made of an elastic body such as rubber, and has a substantially cylindrical through hole 22' penetrating from the center portion of the front surface toward the center portion of the inner surface. The diameter of the through hole 22' is appropriately selected in accordance with the diameter of the electric wire 29, and the electric wire 29 can be fitted. As shown in FIGS. 2 and 6 , an annular projection 24 is provided at a substantially central portion in the penetration direction of the inner wall of the through hole 22 ′, and the diameter of the through hole 22 ′ is reduced by the portion to improve the fitting wire 29 . The tightness of the time. In one embodiment of the circumferential surface of the coating body 4, for example, a slit 21' penetrating from the left side surface to the through 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 wire pad body 4 having such a configuration to the periphery of the opening 2 of the wall panel 1 provided in the casing by the mounting screws 5 will be described.

First, as shown in Fig. 7, the wire pad body 4 is elastically deformed to open the slit 21', whereby the wire 29' led out from the opening 2 is fitted in the through hole 22'. At this time, a plurality of wire mat bodies 4, 4', 4", 4 of different sizes of through holes 22, 22', 22" having different diameters may be used depending on the thickness of the wires 29, 29', 29". '''. The present embodiment is to use four wire pad bodies 4 to 4"' laterally.

Next, the pair of slide boxes 3, 3' are oriented in the direction indicated by the symbol 3 in Fig. 1, and the other side is formed in the up-and-down direction as indicated by the symbol 3', so that the respective hollow portions 30, 30' are opposed to each other. The approach is arranged in front of the panel 1 in the opposite direction of the periphery of the opening 2. In this arrangement, the convex portion 10 provided on the pressure contact surface of the slide case 3 faces the concave portion 11' provided on the pressure contact surface of the slide case 3', and the concave portion 11 provided on the pressure contact surface of the slide case 3 will be built at The convex portions of the pressure contact faces of the slide case 3' are opposed to each other. Here, the upper portions of the wire mat bodies 4 to 4"' are elastically fitted into the hollow portion 30 of the slide case 3, and the lower portion is elastically fitted into the hollow portion 30' of the slide case 3'.

Further, when the pair of slide boxes 3, 3' are disposed to face each other in this manner, the first inclined surfaces 7, 7' are arranged to be inclined from the inside toward the outside and inclined.

The second inclined faces 16 and 16' of the wedge-shaped washers 13 and 13' are placed on the first inclined faces 7 and 7' of the slide boxes 3 and 3', and are passed through the first sides of the wedge-shaped washers 13 and 13'. The hole 17 and the second hole 15 are inserted into the mounting screws 5 and 5' to which the head bolts are attached, and the male screws 18 are screwed to the screw portions 19 and 19' provided in the panel 1. In this manner, the wedge washers 13 and 13' close to the heads of the mounting screws 5, 5' and the panel 1 provided with the screw portions 19, 19' are positioned and fixed by the mounting screws 5, 5'. When the screws 5, 5' are locked in the direction of the arrow A in Fig. 5, the first inclined faces 7, 7' on the slide boxes 3, 3' side and the second inclined faces 16 and 16 on the side of the wedge washers 13, 13' 'The crimping state will be formed, and the slide boxes 3 and 3' in which the mounting screws 5 and 5' are fitted in the first holes 15, 15' will be directed inwardly of each other (arrow B in Fig. 5) )mobile. That is, the pair of slide boxes 3, 3' move toward each other in the direction in which they approach each other. At this time, the convex portion 10 and the concave portion 11 of the slide case 3 are respectively engaged with the concave portion 11' and the convex portion 10' of the slide case 3', so that the slide boxes 3 and 3' are correctly positioned in the left-right direction.

Next, finally, as shown in FIG. 5, each of the convex portions 10, 10' is completely fitted to the corresponding concave portions 11', 11 so that the pressing faces of the side walls 12 of the slide case 3 and the slide case 3 are The crimping faces of the 'two side walls 12' are crimped, and as shown in Fig. 6, the wire pad body 4 held in the hollow portions 30, 30' Up to the top of the 4''' will be squeezed. That is, as previously explained, the depth of the hollow portion 30, 30' is formed when the wire pad bodies 4 to 4"' are clamped inside and the sliding boxes 3, 3' are crimped to each other as described above. The depth of the wire mat body 4 to 4"' can be compressed from above and below. Thereby, the circumference of the electric wires 29, 29', 29" embedded in the through holes 22, 22', 22" of the wire pad bodies 4 to 4"' is watertightly held, particularly in the through hole 22'. The annular projection 24 of the inner wall is crimped to the portion of the electric wire, and the watertightness thereof is improved.

Further, since the first inclined faces 7, 7' on the side of the slide case 3, 3' and the second inclined faces 16, 16' on the side of the wedge-shaped washers 13, 13' are in a crimped state, the slide boxes 3, 3' are formed. The direction in which the panel 1 is crimped also has a force, so that the slide case 3, 3' and the panel 1 are also hermetically held by the sliding pad 6 provided on the back side.

Further, the sizes of the cutout portions 14, 14' provided on the front surface and the rear surface of the slide boxes 3, 3' are embedded in the wire pad body 4 in the pressure contact state shown in Figs. 5 and 6 The wires 29, 29', and 29" in the through holes 22, 22', and 22" of the 4''' are separated by the size of the slit portions 14, 14' disposed opposite to each other.

Figures 9 through 11 are second embodiment of the invention of the present invention. In this embodiment, the sliding box is formed into two passages, and the wire mat bodies 4, 4', 4", 4' are respectively mounted on the two rows of wires 19, 19', 19" and 119, 119', 119". ''and 104, 104', 104", 104''', 104''''. The first embodiment is different in configuration from the central portion of the opening 2 of the panel 1 and is fixed to the fixing case 3" of the panel 1 by means of a mounting screw 105. The fixing case 3" is provided with Hollow portions 30, 30' and sides of the sliding boxes 3, 3' The structural portions of the walls 12, 12' have the same crimping surface, and are also provided with the same convex portions as the convex portions 10, 10', the recesses 11, 11', and the cutout portions 14, 14' of the slide boxes 3, 3'. 110, 110', recessed portions 111, 111' and cutout portions 114, 114', 114". Slide boxes 3, 3' identical to the first embodiment are disposed on the upper and lower sides of the fixed box 3", so that the tilt The faces 7, 7' are placed in alignment with the inclined faces 16, 16' to mount the wedge-shaped washers 13, 13', and are fixed by screwing the mounting screws 5, 5' into the panel 1. Fig. 10 and Fig. 11 show the states corresponding to Figs. 3 and 5, respectively, and the various diameters are embedded in the slits 21, 21', 21" and 121', 121", 121"'. Wire mats 4, 4', 4", 4"' and 101, 104', 104", 104"', 104'' of wires 19, 19', 19" and 119, 119', 119" '', elastically embedded and compressed in the hollow portion of the slide case 3 and the fixed case 3" and in the hollow portion of the fixed case 3" and the slide case 3'.

Further, the second embodiment is a two-stage upper and lower stage type, but a wire clamp of the same configuration can also be realized in three or more stages.

1‧‧‧ panel

2‧‧‧ opening of the panel

3, 3'‧‧‧ sliding box

4, 4', 4", 4'", 104, 104', 104", 104'" ‧ ‧ wire mats

5, 5', 105‧‧‧ mounting screws

6, 6'‧‧‧Sliding pads

7, 7'‧‧‧1st inclined surface

10, 10’, 110’‧‧‧ convex

11, 11', 111' ‧ ‧ recess

12, 12’‧‧‧ side wall

13, 13'‧‧‧Wedge washers

14, 14', 114, 114', 114" ‧ ‧ cut section

15, 15'‧‧‧ hole 1

16, 16'‧‧‧2nd inclined surface

17, 17'‧‧‧ hole 2

21, 21', 21", 121', 121', 121" ‧ ‧ slit

22, 22', 22" ‧ ‧ through holes

24‧‧‧ annular protrusion

25, 27‧‧‧ claws

26‧‧‧Cylinder

29, 29’, 29” ‧ ‧ wires

Fig. 1 is an exploded front view showing an embodiment of the wire clamp of the present invention.

Fig. 2 is a cross-sectional view taken along line A-A of Fig. 1.

Fig. 3 is a front elevational view showing the state in which the wire is held by the wire clamp of Fig. 1.

Fig. 4 is a plan view showing the electric wire clamp of Fig. 3 in such a manner that the held electric wire is not exposed.

Fig. 5 is a cross-sectional view taken along line B-B of Fig. 3.

Fig. 6 is a cross-sectional view taken along line C-C of Fig. 3.

Fig. 7 is an explanatory view showing a method of opening the slit of the wire pad body and pushing the wire.

Fig. 8 is a view showing a state in which the mounting screws 5 are removed in a cross-sectional view taken along line D-D of Fig. 1.

Fig. 9 is an exploded front view showing another embodiment different from Figs. 1 to 8.

Fig. 10 is a front elevational view showing the state in which the wire is held by the wire clamp of Fig. 9.

Fig. 11 is a cross-sectional view taken along line E-E of Fig. 10.

3, 3'‧‧‧ sliding box

4, 4', 4", 4'''‧‧‧ wire mats

5, 5'‧‧‧ mounting screws

10, 10'‧‧‧ convex

11, 11' ‧ ‧ recess

12, 12’‧‧‧ side wall

29, 29’, 29” ‧ ‧ wires

Claims (6)

A wire clamp for a wire clamp for holding a wire drawn from an opening of a panel on a surface of a panel, the wire clamp having: a wire gasket body mounted on the wire; a pair of slide boxes for holding the wire pad body of the wire from the upper and lower sides; mounting screws for mounting the slide boxes to the panel; and wedge washers disposed between the slide boxes and the mounting screws; the wire gasket The body has: a through hole through which the power supply line is inserted; and a slit through which the through hole passes from the side portion and through which the electric wire can pass; each of the pair of slide boxes is disposed on the inner side when the pair is opposed to each other The convex portion and the concave portion are disposed at positions where the convex portions of one of the sliding boxes are disposed corresponding to the concave portions of the other sliding case when the pair is disposed opposite to each other, and each of the sliding boxes has: a first screw hole that is fitted by a mounting screw; and a first inclined surface that is lowered and inclined from an inner side surface when the pair of sliding boxes are opposed to each other; the wedge-shaped washer has a second through which the mounting screw is inserted Screw And a second inclined surface that is complementary to the first inclined surface of the slide case; and the wedge washer is placed on the first inclined surface so as to be aligned with the second inclined surface, and the mounting screw is inserted into the oppositely disposed one Spiral to each of the first screw holes of the slide case and the second screw hole of each wedge washer When the panel is inserted into the panel, the convex portion of the slide cartridge that is disposed oppositely engages with the recessed portion, and the wire gasket body is compressed by the slide case, so that the periphery of the wire and the periphery of the wire pad body can be waterproofly held. The wire clamp according to claim 1, wherein the wire gasket system is an elastomer. The electric wire clamp according to claim 1 or 2, wherein a sliding pad is provided on a surface of the panel side of the sliding case, and the sliding pad is an elastic body and is provided with a panel surface. A material having a small frictional resistance is formed by applying a coating on the surface of the panel side or applying a lubricating oil on the surface of the panel side to reduce the frictional resistance with the panel surface. The electric wire lining system according to any one of the first aspect, wherein the electric wire lining system has an annular projection at a substantially central portion in a penetration direction of the inner wall of the through hole. The electric wire clamp according to any one of the first to fourth aspects of the present invention, wherein the sliding case has a claw portion that protrudes inward on a right and left side portion of the first inclined surface, and the wedge shape is formed When the washer is placed on the first inclined surface with respect to the second inclined surface, it is engaged with the claw portion to prevent falling off. The electric wire clamp according to claim 5, wherein the slide case has an elastic cylindrical body integrally provided on an inner wall of the first screw hole and extending in a direction of an inner surface of the slide case.