JP2018035869A - Electric wire clamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric wire clamp capable of preventing disconnection due to bending of an electric wire occurring in contact between the electric wire and the electric wire clamp holding the electric wire.SOLUTION: An electric wire clamp 1 includes a fastener part 2 attached to an apparatus, and a clamp part 3 interpolating and holding an electric wire H. The clamp part 3 includes a clamp piece 33 formed into a cylindrical shape having an opening into which the electric wire H is interpolated, and holding a part of the electric wire in a central region in the electric wire H interpolation direction of the clamp part 3. An inner surface 31a of both end edge parts 31, from which the electric wire H is drawn, of the clamp part 3 is composed of a moderate curved surface. The electric wire H is prevented from being bent at a small curvature radius caused by a curved surface, thereby preventing disconnection of the electric wire H.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an electric wire clamp for holding an electric wire in a device, and more particularly to an electric wire clamp for preventing disconnection when an electric wire is repeatedly bent.

  In a gaming machine such as a slot machine, a front frame supporting the game board is connected to an outer frame as a gaming machine main body by a hinge, and one or a plurality of electric wires are extended to extend the outer frame and the front frame. Electrical connection with (game board). In such a gaming machine, part of the electric wire is moved as the front frame is opened and closed, and the electric wire may be sandwiched between the outer frame and the front frame, and the electric wire may be disconnected. In Patent Document 1, a plurality of portions of an extended electric wire are fixed to an outer frame or a front frame by an electric wire clamp such as a binding band or a binding piece, and pinching is prevented by restricting the movement of the electric wire.

  The technique of Patent Document 1 can prevent the electric wire from being caught, but when the front frame is repeatedly opened and closed, the electric wire is repeatedly bent along with this, and the curvature of the electric wire is small especially at the portion held by the electric wire clamp. It may be bent at an acute angle with a radius. When such bending is repeated, the electric wire is easily fatigued at the bent portion.

  As a technique for preventing the disconnection due to the bending of the electric wire, a wire fixing structure of Patent Document 2 has been proposed. This technique is a technique in which a bent portion is provided at a portion where the electric wire of the electric wire fixing portion is pulled out, and the electric wire is bent along the bent portion. According to this technique, even when tension is applied to the electric wire, the electric wire is not bent with a small radius of curvature at the bent portion, and disconnection due to the bending is prevented.

JP 2014-110991 A Japanese Patent Laying-Open No. 2015-046294

  The technique of Patent Document 2 is effective in preventing disconnection because the electric wire is not bent at an acute angle at the portion where the electric wire contacts the bent portion. However, since the electric wire is held by the binding band on the outside of the bent portion, that is, on the side where the electric wire is drawn out, the electric wire is sharp and has a small radius of curvature at the portion held by the binding band, particularly at the edge portion of the binding band. It cannot be prevented from being bent. Therefore, even in the technique of Patent Document 2, disconnection due to bending of the electric wire with a small curvature radius cannot be prevented as in Patent Document 1.

  The objective of this invention is providing the electric wire clamp which can prevent the disconnection by the bending of the electric wire which arises in the mutual contact | abutting of an electric wire and the electric wire clamp holding this.

  1st invention of this invention is an electric wire clamp provided with the fastener part for attaching to an apparatus, and the clamp part for inserting and hold | maintaining an electric wire, Comprising: The said clamp part is the insertion direction of the said electric wire. A clamp piece for holding a part of the electric wire is provided in the central region of the clamp member, and inner surfaces of both end regions from which the electric wire of the clamp part is drawn out are configured by gentle curved surfaces.

  2nd invention of this invention is an electric wire clamp provided with the fastener part for attaching to an apparatus, and the clamp part for inserting and hold | maintaining an electric wire, Comprising: The said clamp part is the insertion direction of the said electric wire. A clamp piece for holding a part of the electric wire is provided in the central region of the two, and both end regions of the clamp part from which the electric wire is drawn out are more easily elastically deformed than the central region.

  Here, in the first and second inventions, the clamp portion is formed in a cylindrical shape capable of opening and closing an opening in which an electric wire can be inserted, and the clamp piece is elastically contacted with the electric wire in a cylindrical radial direction. It is preferable that the holding is performed. Moreover, it is preferable that the said fastener part is equipped with a pair of fastener piece integrated when the said clamp part is closed.

According to the first invention, even if the electric wire being clamped is bent by an external force, the inner surface of the portion from which the electric wire is pulled out from the electric wire clamp is formed into a gently curved surface or an arc surface having a radius of curvature as large as possible. Therefore, the electric wire to be bent is bent along this gently curved surface, and is not bent with a small radius of curvature, and disconnection is prevented.

According to the second invention, even if the clamped electric wire is bent by an external force, the bent region of the electric wire clamp is bent together with the electric wire, so that the electric wire can be bent with a small radius of curvature with respect to the electric wire clamp. And disconnection is prevented.

FIG. 3 is an external perspective view of the electric wire clamp according to the first embodiment. (A) of the electric wire clamp of Embodiment 1 is a front view, (b) is the AA sectional view taken on the line. The front view which shows the state which clamps a harness. The perspective view of the state which clamped the harness. The perspective view which shows the state which attaches the electric wire clamp of Embodiment 1 to an apparatus. Sectional drawing similar to FIG.2 (b) for demonstrating the effect | action which prevents the bending | flexion of a harness. The perspective view of the electric wire clamp of Embodiment 2. FIG. The perspective view at the time of the clamp of the electric wire clamp of Embodiment 2, and a front view. The perspective view which shows the state which attaches the electric wire clamp of Embodiment 2 to an apparatus. The side view for demonstrating the effect | action which prevents the bending of a harness. The modification of the electric wire clamp of Embodiment 1 is shown, (a) is a front view, (b) is a perspective view. It is a table | surface of the simple test result which shows the effect of the elasticity prevention of the electric wire clamp of Embodiment 1.

  An embodiment of the present invention will be described. The electric wire clamp of the present invention is provided on an outer frame of a gaming machine such as a slot machine and a front frame that supports a gaming board connected to the outer frame by a hinge or the like, as described in Patent Document 1, for example. It is attached. The outer frame and the front frame are electrically connected to each other by an electric wire, and the electric wire extends along the outer frame and the front frame. And this electric wire is hold | maintained by the outer frame or the front frame by the electric wire clamp in the several places of the extended length direction. This holding prevents the electric wire from being sandwiched between the front frame and the outer frame even when the front frame is opened and closed with respect to the outer frame.

(Embodiment 1)
FIG. 1 is an external perspective view of a wire clamp 1 according to Embodiment 1 and an electric wire held by the electric wire clamp 1, here, a harness H in which a plurality of electric wires are bundled, and FIG. FIG. 2B is a sectional view taken along the line AA. The electric wire clamp 1 is formed by integral molding of resin, and a fastener portion 2 for fixing the electric wire clamp itself to a device such as an outer frame or a front frame of a gaming machine and the harness H for holding the device to the device. The clamp part 3 is comprised.

  The clamp portion 3 includes a pair of end edges 31 having a semicircular or downward U shape provided at both ends along one direction, and a cylindrical wall portion 32 interposed between the end edges 31. The lower half is configured as a semi-cylindrical cylinder, and the harness H can be inserted into the cylinder. In the following, the up-down direction, the horizontal direction, and the left-right direction are based on FIG.

  The pair of end edge portions 31 are formed to be somewhat thicker than the cylindrical wall portion 32, and an inner surface 31 a along the circumferential direction of each end edge portion 31 has a cross section in the one direction, that is, in the cylinder axis direction. The shape is a gently curved surface from the inner diameter side to the outer diameter side, here an arc surface having a radius of curvature as large as possible. A pair of through grooves 34 are formed in parallel in the cylindrical wall portion 32 along the cylinder axis direction, and a portion sandwiched between the through grooves 34 is configured as a clamp piece 33. The clamp piece 33 has a part of the inner surface, here the inner surface of the central portion along the cylinder axis direction protrudes inward in the cylinder radial direction, and has a gently curved surface that recedes in the outer diameter direction toward both ends. Is formed. The clamp piece 33 is elastically deformed in the cylinder radial direction by the elasticity of the resin.

  The fastener part 2 includes a pair of fastener pieces 21 respectively connected to both side edges of the cylindrical wall part 32 of the clamp part 3. These fastener pieces 21 are provided with columnar portions 22 each having a plate frame shape, and are connected to the cylindrical wall portion 32 by a thin hinge piece 23 provided at a base end portion of the columnar portions 22. Further, a flange-like fitting portion 24 protruding toward both sides is provided at the distal end portion of the column portion 22.

  The fastener piece 21 can be tilted with respect to the clamp portion 3 in the plate thickness direction, that is, in a direction orthogonal to the cylinder axis direction by the flexibility of the hinge piece 23. As will be described later, when the fitting portion 24 is inserted into a fixing hole provided in the device, the fitting portion 24 can be fitted into the fixing hole.

  One of the pair of fastener pieces 21 (the right-side fastener piece in FIG. 2) is provided with a locking piece 25 in which a part of the column portion 22 protrudes downward. The locking piece 25 has a tip end formed in an arrowhead shape or a spindle shape. Further, a tongue-shaped guide piece 27 protruding downward is provided on one side portion of the column portion, that is, one side portion along the cylinder axis direction. The other fastener piece 21 (the left fastener piece in FIG. 2) is provided with a locking groove 26 into which the locking piece 25 is inserted in a part of the column portion 22. The other fastener piece 21 is provided with a tongue-like guide piece 28 protruding downward on the other side portion of the column portion 22, that is, the other side portion along the cylinder axis direction. ing. The guide pieces 27, 28 of each fastener piece 21 have arcuate edges on opposite sides, and function as guides when the harness H is inserted into the clamp portion 3 as will be described later.

  When attaching the wire clamp 1 to the outer frame or the front frame of the gaming machine, as shown in the front view of FIG. 3A, the opening of the clamp portion 3, that is, the end edge portion 31 and the cylindrical wall portion. The harness H is inserted into the cylinder through the opening 32. After the insertion, the pair of fastener pieces 21 of the fastener portion 2 is tilted downward as indicated by an arrow using the flexibility of the hinge piece 23. By this tilting, the guide pieces 27 and 28 of each fastener piece 21 are tilted toward the inside of the cylinder, and at this time, the harness H is guided inside the cylinder. Thereby, the harness H can be inserted in the clamp part 3.

  As shown in FIG. 3B, the locking pieces 25 of one fastener piece 21 are tilted until the two fastener pieces 21 come into contact with each other, so that the locking pieces 25 of the other fastener piece 21 are locked. 26, the two fastener pieces 21 are integrated. That is, the fastener portion 2 is obtained by integrating the column portions 22 and the fitting portions 24 of the fastener pieces 21 in the plate thickness direction.

  At this time, as shown in FIG. 3B, the harness H held by the wire clamp 1 is further clamped by the clamp piece 33 and the hinge piece 23 of the fastener part 2 inside the clamp part 3 and further by the guide piece 27. , 28 and is held in a compressed state in the vertical direction, and the harness H is securely clamped. Therefore, in the first embodiment, the hinge piece 23 and the guide pieces 27 and 28 constitute a part of the clamp portion 3, and the hinge piece 23 and the guide pieces 27 and 28, the cylindrical wall portion 32, the end edge portion 31, and the like. Thus, the clamp portion 3 is formed in a cylindrical shape.

  When the harness H is held by the electric wire clamp 1, the state shown in FIG. As shown in FIG. 5A, the electric wire clamp 1 is formed by fitting the fastener portion 2 into a device D, that is, a fixing hole d provided in the outer frame or the front frame of the gaming machine, as shown in FIG. Thus, the fastener part 2, that is, the wire clamp 1 can be fixed to the device D. In this way, by fixing the wire clamp 1 to the device D, the harness H held by the clamp portion 3 can be held by the device D. In particular, the harness H is clamped in the vertical direction by elastic force in a relatively large area of the clamp piece 33 and the hinge piece 23 of the fastener part 2 at the center position of the clamp part 3 in the cylinder axis direction. Is held by. Therefore, the harness H can be held firmly.

  In this state, as shown in FIG. 6, when the situation in which the harness H is bent by an external force occurs, the harness H is bent at an angle θ at a portion pulled out from the wire clamp 1. It will be. The pulled-out portion, that is, both end edge portions 31 of the clamp portion 3 is formed such that the inner surface 31a is a gently curved surface or an arc surface having a radius of curvature as large as possible. It is bent along the inner surface 31a, and it is prevented from being bent with a small radius of curvature. This is the same when the harness H is bent in the horizontal direction along the surface of the device D.

  Therefore, according to the electric wire clamp 1 of the first embodiment, the harness H can be firmly held by the clamp piece 33 of the clamp portion 3 and the movement of the harness H can be prevented. On the other hand, since the harness H is only brought into contact with the gentle curved surface 31a inside the clamp portion 3 in the regions at both ends, even if the harness H is bent, the harness H is bent with a small radius of curvature. The internal stress accompanying bending is not concentrated on a part of the harness H, and disconnection of the harness H accompanying bending can be prevented.

(Embodiment 2)
FIG. 7 is an external perspective view of the electric wire clamp 1A of the second embodiment. The electric wire clamp 1A is composed of a clamp part and a fastener part as in the first embodiment, but in the second embodiment, the clamp part 4 is formed by a pair of half cylindrical parts 41, and these half parts The split cylindrical portions 41 are connected to each other by hinge pieces 42 so as to be openable and closable around the cylinder axis. That is, when both the half cylinder parts 41 are closed, the clamp part 4 is configured in a cylindrical shape. Since the fastener part 2 is basically the same as that of the first embodiment, the same reference numerals as those of the first embodiment are given and detailed description thereof is omitted. The pair of fastener pieces 21 of the fastener portion 2 are fixedly connected to the pair of half cylinder portions 41, respectively.

  In the clamp part 4, each of the pair of half cylinder parts 41 is divided into three regions in the cylinder axis direction, the central region is a clamp region a, and the regions on both sides thereof are bent regions b. Yes. The fastener pieces 21 are connected to the clamp areas a. Further, in the clamp region a, arc-shaped clamp pieces 43 protruding in the inner diameter direction are provided at portions corresponding to both sides of the fastener piece 21 in the cylinder axis direction. The clamp piece 43 is formed by cutting out a part of the half cylindrical portion 41 in the cylinder axis direction into a thin piece, and is configured to be elastically deformable in the cylinder radial direction.

  On the other hand, a plurality of through grooves 44 extending in the circumferential direction are formed in each bent region b of each halved cylindrical portion 41 at predetermined intervals in the cylinder axis direction. The through-grooves 44 reduce the rigidity of each half cylindrical portion 41 in the bent region b, so that each bent region b is easily elastically deformed. In other words, the cylindrical axis of each bent region b is easily elastically deformed in a direction that is displaced vertically and horizontally with respect to the cylindrical axis of the clamp region a and a direction that is inclined.

  When the wire clamp 1A is attached to a device such as an outer frame or a front frame of a gaming machine, the harness (not shown here) is set with the half cylindrical portion 41 of the clamp portion 4 opened as in the first embodiment. (Shown) is inserted inside the cylinder, and after insertion, as shown in a perspective view of FIG. 8A and a front view of FIG. Can be interpolated. At this time, although not shown in the drawing, the harness can be clamped between the pair of clamp pieces 43 by the elasticity of the clamp piece 43 of the clamp part 4 in a compressed state, and the harness is securely held in the clamp part 4. can do.

  Further, by closing the pair of half-cylindrical portions 41, both fastener pieces 21 are brought into contact with each other and are brought into a nearly integrated state. At this time, similarly to the first embodiment, one fastener piece 21 is provided with a locking piece, and this is engaged with a locking groove provided on the other fastener piece so that the two fastener pieces 21 are integrated. May be. As shown in FIG. 9, the wire clamp 1 </ b> A can be fixed to the device D by fitting the fastener portion 2 of the wire clamp 1 </ b> A into the fixing hole d provided in the device D.

  When the harness is held by the electric wire clamp 1A in this way, the harness H is compressed in the cylinder radial direction by the pair of clamp pieces 43 in the clamp area a in the center of the cylinder portion of the clamp portion 4 as shown in FIG. The harness H is clamped securely and held against the device.

  In this state, when a situation occurs in which the harness H is bent by an external force, the harness H is bent at a portion drawn outward from the bending regions b on both sides of the clamp portion 4. Accordingly, the bent regions b on both sides of the clamp portion 4 are also elastically deformed so as to follow this. That is, when the harness H is bent in the direction of the arrow in FIG. 10, the bent region b is also elastically deformed following the direction of the arrow. Therefore, even if the harness H is bent, a contact force accompanying the bending does not occur at the contact portion between the harness H and the clamp portion 4, and internal stress accompanying this does not concentrate on a part of the harness H. The disconnection of the harness H accompanying bending can be prevented. At the same time, since the bending region b is not bent with a small radius of curvature, the harness H is also prevented from being bent with a small radius of curvature.

  The configurations of the clamp portion and the fastener portion in the present invention are not limited to the configurations described in the first and second embodiments. For example, in the electric wire clamp 1 of the first embodiment, as shown in FIG. 11A, the guide pieces 27 and 28 may have a linear shape on the side facing the harness H and a curved shape on the opposite side. Alternatively, as shown in FIG. 11B, a pair of through grooves 34 </ b> A extending in the circumferential direction may be provided in the cylindrical wall portion 32 of the clamp portion 3, and the clamp pieces 33 </ b> A extending in the circumferential direction may be configured. Moreover, the cylinder shape which comprises a clamp part is not restricted to a cylinder, A square cylinder shape, Preferably a polygonal cylinder shape may be sufficient. Further, the fastener portion may be configured by bonding or screwing to the device. Or a pair of fastener piece which comprises a fastener part may be comprised by one fastener piece connected with the clamp part.

  FIG. 12 shows the result of a simple test performed on the electric wire clamp 1 of the first embodiment. In this test, a harness in which eight cables are bundled is held by the electric wire clamp 1, and then the harness is repeatedly bent to check the disconnection of the cable. Here, the bending of the harness was performed at an angle θ shown in FIG. 6 of 120 ° and 180 °, and the number of times until disconnection was confirmed in units of 2000 times or 1000 times was tested. As a comparative sample, a comparison was made with a harness held by a binding band as described in Patent Document 2. This binding band is a band in which the above-mentioned edges are formed at a substantially right angle.

  As shown in FIG. 12 (a), when the bending was repeated at an angle of 120 °, the comparative sample was disconnected less than 3000 times, whereas the wire clamp 1 of the first embodiment exceeded 7000 times. No disconnection is observed. As shown in FIG. 12 (b), when the bending was repeated at an angle of 180 °, the comparative sample was disconnected less than 1000 times, whereas the wire clamp 1 of Embodiment 1 exceeded 3000 times. No disconnection is observed.

DESCRIPTION OF SYMBOLS 1,1A Electric wire clamp 2 Fastener part 3, 4 Clamp part 21 Fastener piece 22 Column part 23 Hinge piece 24 Fitting part 25 Locking piece 26 Locking groove 27, 28 Guide piece 31 End edge part 31a Inner surface 32 Cylindrical wall part 33 Clamp piece 41 Half cylindrical part 42 Hinge piece 43 Clamp piece 44 Through groove H Harness (electric wire)
D Equipment d Fixing hole

Claims (4)

  A wire clamp comprising a fastener portion for attaching to a device and a clamp portion for interpolating and holding an electric wire, wherein the clamp portion is part of the electric wire in a central region in the insertion direction of the electric wire An electric wire clamp, characterized in that an inner surface of both end regions from which the electric wire of the clamp part is drawn out is formed with a gently curved surface.   A wire clamp comprising a fastener portion for attaching to a device and a clamp portion for interpolating and holding an electric wire, wherein the clamp portion is part of the electric wire in a central region in the insertion direction of the electric wire An electric wire clamp comprising: a clamp piece for holding the wire, wherein both end regions of the clamp portion from which the electric wire is drawn out are more easily elastically deformed than the central region.   The said clamp part is formed in the cylinder shape which can open and close the opening which can insert an electric wire, The said clamp piece elastically contacts with respect to the said electric wire in a cylinder radial direction, and hold | maintains. Electric wire clamp. The said fastener part is an electric wire clamp of Claim 3 provided with a pair of fastener piece integrated when the said clamp part is closed.

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