JP7537344B2 - Control panels and machine tools - Google Patents

Description

The present invention relates to a control panel and a machine tool.

The control device for a machine tool described in Patent Document 1 includes a housing. The lower wall of the housing has an insertion hole that penetrates the lower wall in the vertical direction and allows an electric wire to be inserted therethrough. A fixed member and a clamping member are arranged on the lower wall above the insertion hole. The fixed member is arranged on the front side of the insertion hole and is fixed to the upper surface of the lower wall. The clamping member is arranged on the rear side of the insertion hole and is arranged so as to be detachable from the upper surface of the lower wall. An elastic member is arranged on the rear side of the fixed member and on the front side of the clamping member. The fixed member and the clamping member clamp the electric wire that passes through the insertion hole via the elastic member.

JP 2020-116676 A

In the above-mentioned machine tool control device, when the fixing member and the clamping member clamp multiple electric wires, gaps may occur between the fixing member, the clamping member, and the electric wires. At such times, dust generated during processing by the machine tool may enter the inside of the housing through the gaps.

The object of the present invention is to provide a control panel and machine tool that can prevent dust from entering the inside of a storage box.

The control panel according to the first aspect of the present invention includes an electrical component for controlling a machine tool, a storage box for storing the electrical component in a space surrounded by a plurality of walls, a predetermined wall that is a part of the wall is opened, and an insertion hole through which an electric wire electrically connected to the electrical component can be inserted, and a clamping member for clamping the electric wire inserted through the insertion hole, the clamping member having a first clamping portion and a second clamping portion capable of clamping the electric wire inserted through the insertion hole, and the first clamping portion has a front The second clamping portion includes a first extending plate extending in a direction away from the specified wall, and a first elastic portion and a second elastic portion arranged at a distance from each other in the direction in which the first extending plate extends, and the second clamping portion includes a second extending plate extending in a direction away from the specified wall, and an opposing elastic portion that is an elastic member having elasticity and protrudes from the second extending plate toward the first clamping portion and has elasticity, and the electric wire is clamped between the first elastic portion, the second elastic portion, and the opposing elastic portion.

The control panel of the first embodiment clamps the electric wire passing through the insertion hole at two locations: the first elastic portion and the opposing elastic portion, and the second elastic portion and the opposing elastic portion. The first elastic portion and the second elastic portion are arranged at a distance from each other in the direction in which the first extension plate extends, so that the gap between the electric wire and the first elastic portion and the opposing elastic portion (hereinafter referred to as the first gap) and the gap between the electric wire and the second elastic portion and the opposing elastic portion (hereinafter referred to as the second gap) are separated by a space. Therefore, the control panel can prevent dust from entering the inside of the storage box.

In the control panel of the first embodiment, the first extension plate has a base portion extending in a first extension direction intersecting with the specified wall, and an extension portion bending and extending from the base portion in a second extension direction different from the first extension direction, and the first elastic portion may be disposed on the base portion, and the second elastic portion may be disposed on the extension portion. Since the first extension plate is bent, it is possible to further prevent dust from entering the inside of the storage box.

The control panel of the first embodiment may be an elastic member that connects an end of the first elastic portion and an end of the second elastic portion, and may have elastic portions at both ends that protrude from the first extension plate toward the second clamping portion. The control panel can prevent dust from entering the inside of the first clamping portion and the second clamping portion from both ends in the orthogonal direction of the first clamping portion and the second clamping portion.

In the control panel of the first embodiment, the first elastic portion may be disposed at an end of the first extension plate on a specific wall side, and the second elastic portion may be disposed at the other end opposite the end. Since the control panel has the first elastic portion and the second elastic portion disposed at both ends of the first extension plate, the distance separating the first gap and the second gap is longer compared to when both elastic portions are disposed at the middle of the first extension plate, and therefore the intrusion of dust into the inside of the storage box can be further suppressed.

In the control panel of the first embodiment, the first clamping portion may include a first fixed plate fixed to the specified wall and a first fixed elastic portion having elasticity between the first fixed plate and the specified wall, and the second clamping portion may include a second fixed plate fixed to the specified wall and a second fixed elastic portion having elasticity between the second fixed plate and the specified wall. Since the first fixed elastic portion fills the gap between the first fixed plate and the specified wall and the second fixed elastic portion fills the gap between the second fixed plate and the specified wall, the control panel can further prevent dust from entering the inside of the storage box.

The machine tool according to the second aspect of the present invention is characterized by having a control panel according to any one of claims 1 to 5. The machine tool according to the second aspect can achieve the same effects as the first aspect.

FIG. FIG. 4 is a perspective view of a clamping member 40 in which a first clamping portion 50 and a second clamping portion 70 are in contact with each other. FIG. 13 is a perspective view of a clamping member 40 in which a first clamping portion 50 and a second clamping portion 70 are separated from each other. FIG. FIG. 4 is a rear view of the second clamping portion 70. FIG. FIG. 4 is a vertical cross-sectional view of a clamping member 40 fixed to a lower wall 212. FIG. 4 is a vertical cross-sectional view of a clamping member 40 fixed to a left wall 215. FIG. 11 is a perspective view of a clamping member 140 according to a modified example. FIG. 11 is a perspective view of a clamping member 140 according to a modified example. FIG. FIG.

The following describes an embodiment of the present invention. In the following description, the left/right, front/back, and up/down directions are used as indicated by arrows in the figures. The left/right, front/back, and up/down directions of the machine tool 1 correspond to the X-axis, Y-axis, and Z-axis directions of the machine tool 1, respectively. The orientation of the control panel 20 also follows this pattern.

The structure of the machine tool 1 will be described with reference to FIG. 1. The machine tool 1 is a vertical machine tool with a spindle (not shown) extending in the Z-axis direction. The machine tool 1 comprises a base 2, a machine body, a cover 10, and a control panel 20. The base 2 is an iron base. The machine body is located at the upper rear of the base 2. The machine body rotatably holds the spindle. A tool (not shown) is attached to the spindle, and the spindle performs cutting processing, etc., on a workpiece (not shown) fixed to the upper surface of the workbench (not shown). The workbench is located at the upper front of the base 2. The cover 10 is fixed to the upper part of the base 2 and surrounds the machine body and the workbench. The cover 10 has an opening 11 at the front and a door 12 that opens and closes the opening 11. The control panel 20 is fixed to the rear outer side of the cover 10.

The structure of the control panel 20 will be described with reference to Figure 2. The control panel 20 has a storage box 21 that is approximately rectangular. The storage box 21 stores electrical components 30 that control the machine tool 1. The electrical components 30 are, for example, an input/output board, a control board, a DC switching power supply, a breaker, an inverter, a wiring duct, a servo amplifier, etc. The electrical components 30 are driven by receiving power from a power source external to the machine tool 1.

The storage box 21 has a front wall 211, a bottom wall 212, a top wall 213, a right wall 214, and a left wall 215, and has an opening 22 at the rear end. The storage box 21 has a door 23 that opens and closes the opening 22. For example, when inspecting the control panel 20, an operator opens the door 23 and inspects, replaces, repairs, etc., various electrical components stored in the control panel 20. The door 23 has a grip 24 at the lower left that switches between locking and unlocking the door 23 and that the operator grips when opening the door 23.

The lower wall 212 has an insertion hole 25 that penetrates in the vertical direction at the front right part. The left wall 215 has an insertion hole 26 that penetrates in the horizontal direction at the top. Electric wires (not shown) extending from a power source outside the machine tool 1 pass through the insertion holes 25, 26 and connect to the electrical components 30 inside the storage box 21. The upper surface of the lower wall 212 and the left surface of the left wall 215 are provided with clamping members 40 that clamp the electric wires that have passed through the insertion holes 25, 26.

The structure of the clamping member 40 of one embodiment of the present invention will be described with reference to Figures 3 to 8. For ease of explanation, the clamping member 40 in Figures 3 to 7 will be described as being located on the upper surface of the bottom wall 212. The clamping member 40 has a first clamping portion 50 and a second clamping portion 70. The first clamping portion 50 is fixed to the bottom wall 212 on the rear side of the insertion hole 25 by a bolt 27 and a nut 271 (see Figure 7). The second clamping portion 70 is fixed to the bottom wall 212 on the front side of the insertion hole 25 by a bolt 28 and a nut 281 (see Figure 7). The first clamping portion 50 abuts the electric wire from the rear side, and the second clamping portion 70 abuts the electric wire from the front side, so that the clamping member 40 clamps the electric wire.

The structure of the first clamping unit 50 will be described with reference to Figures 3 to 5. The first clamping unit 50 includes a fixed plate 51, a first extending plate 52, a right plate 55, a left plate 56, and elastic members 58 and 60. The fixed plate 51 is flat and extends in the front-rear and left-right directions. The elastic member 58 is fixed to the underside of the fixed plate 51 with adhesive. The elastic member 58 is in the form of a sheet having the same shape as the fixed plate 51 in a plan view, and has elasticity. The fixed plate 51 and the elastic member 58 each have a hole 59 that penetrates both the left and right ends in the up-down direction. The bolt 27 (see Figure 7) is inserted through the hole 59 and a hole (not shown) that penetrates the bottom wall 212, and is fastened to a nut 271 (see Figure 7) on the underside of the bottom wall 212.

The first extension plate 52 has a base 53 and an extension 54. The base 53 is a flat plate extending upward and in the left-right direction from the front of the fixed plate 51. The left-right length of the base 53 is shorter than the left-right length of the fixed plate 51. The holes 59 of the fixed plate 51 are located on the right and left sides of the base 53. The extension 54 is a flat plate extending upward and forward and in the left-right direction from the upper end of the base 53. The right plate 55 is a flat plate extending forward and in the vertical direction from the right end of the first extension plate 52. The left plate 56 is a flat plate extending forward and in the vertical direction from the left end of the first extension plate 52.

The elastic member 60 has elasticity and is fixed to the front side of the first extension plate 52 with an adhesive. As shown in FIG. 5, the elastic member 60 has a first elastic portion 61, a second elastic portion 62, a right elastic portion 63, and a left elastic portion 64. The first elastic portion 61 is located on the front side of the lower end of the base portion 53. The first elastic portion 61 protrudes forward toward the second clamping portion 70 and is a roughly rectangular parallelepiped extending in the up-down and left-right directions. The second elastic portion 62 is located on the front side of the upper end of the extension portion 54. The second elastic portion 62 protrudes downward and forward toward the second clamping portion 70 and is a roughly rectangular parallelepiped extending in the up-down and left-right directions.

The right elastic portion 63 is located on the front side of the right end of the first extending plate 52. The right elastic portion 63 protrudes toward the second clamping portion 70 and is a substantially rectangular parallelepiped extending in the direction in which the first extending plate 52 extends and in the left-right direction. The lower end of the right elastic portion 63 is connected to the right end of the first elastic portion 61, and the upper end of the right elastic portion 63 is connected to the right end of the second elastic portion 62. The left elastic portion 64 is located on the front side of the left end of the first extending plate 52. The left elastic portion 64 protrudes toward the second clamping portion 70 and is a substantially rectangular parallelepiped extending in the direction in which the first extending plate 52 extends and in the left-right direction. The lower end of the left elastic portion 64 is connected to the left end of the first elastic portion 61, and the upper end of the left elastic portion 64 is connected to the left end of the second elastic portion 62.

The structure of the second clamping unit 70 will be described with reference to Figures 3, 4, and 6. The second clamping unit 70 includes a fixed plate 71, a second extending plate 72, and elastic members 78 and 80. The fixed plate 71 is flat and extends in the front-rear and left-right directions. The elastic member 78 is fixed to the underside of the fixed plate 71 with adhesive. The elastic member 78 is sheet-shaped in the same shape as the fixed plate 71 in a plan view, and has elasticity. The fixed plate 71 and the elastic member 78 have grooves 79 recessed from the front end to the rear at both left and right ends and in the center in the left-right direction. The bolt 28 (see Figure 7) fits into the groove 79 and passes through a hole (not shown) that penetrates the lower wall 212, and is fastened to a nut 281 (see Figure 7) on the underside of the lower wall 212.

The second extension plate 72 has a base 73 and an extension 74. The base 73 is a flat plate extending upward and in the left-right direction from the rear end of the fixed plate 71. When clamping an electric wire inserted through the insertion hole 25, the base 73 is disposed between the right plate 55 and the left plate 56 of the first clamping part 50. The extension 74 is a flat plate extending upward and forward and in the left-right direction from the upper end of the base 73 in parallel with the extension 54 of the first clamping part 50.

The elastic member 80 has elasticity and is fixed to the rear side of the second extension plate 72 with an adhesive. As shown in FIG. 6, the elastic member 80 has a first elastic portion 81, a second elastic portion 82, a right elastic portion 83, and a left elastic portion 84. The first elastic portion 81 is located on the rear side of the lower end of the base portion 73. The first elastic portion 81 protrudes rearward toward the first clamping portion 50 and is a roughly rectangular parallelepiped extending in the up-down and left-right directions. The second elastic portion 82 is located on the rear side of the upper end of the extension portion 74. The second elastic portion 82 protrudes upward and rearward toward the first clamping portion 50 and is a roughly rectangular parallelepiped extending in the up-down and left-right directions.

The right elastic portion 83 is located on the rear side of the right end of the second extending plate 72. The right elastic portion 83 protrudes toward the first clamping portion 50 and is a generally rectangular parallelepiped extending in the direction in which the second extending plate 72 extends and in the left-right direction. The lower end of the right elastic portion 83 is connected to the right end of the first elastic portion 81, and the upper end of the right elastic portion 83 is connected to the right end of the second elastic portion 82. The left elastic portion 84 is located on the rear side of the left end of the second extending plate 72. The left elastic portion 84 protrudes toward the first clamping portion 50 and is a generally rectangular parallelepiped extending in the direction in which the second extending plate 72 extends and in the left-right direction. The lower end of the left elastic portion 84 is connected to the left end of the first elastic portion 81, and the upper end of the left elastic portion 84 is connected to the left end of the second elastic portion 82.

As shown in FIG. 7, when the first clamping portion 50 and the second clamping portion 70 are in contact with each other, the clamping member 40 has a space 90 surrounded by the first extending plate 52 of the first clamping portion 50, the elastic member 60, the second extending plate 72 of the second clamping portion 70, and the elastic member 80. The clamping member 40 clamps the electric wire passing through the insertion hole 25 at two locations, between the first elastic portion 61 and the first elastic portion 81, and between the second elastic portion 62 and the second elastic portion 82.

The clamping member 40 may be disposed on the left side of the left wall 215. As shown in FIG. 8, the first clamping portion 50 is fixed to the left wall 215 above the insertion hole 26 by a bolt 27 and a nut 271. The second clamping portion 70 is fixed to the left wall 215 below the insertion hole 26 by a bolt 28 and a nut 281. At this time, the electric wire passing through the insertion hole 26 is wired inside the storage box 21 from the external power source through the clamping member 40 and the insertion hole 26 in that order.

As described above, the control panel 20 is fixed to the rear outside of the cover 10 that surrounds the machine body in the machine tool 1. The control panel 20 includes a roughly rectangular parallelepiped storage box 21 that includes a bottom wall 212 and a left wall 215, and stores electrical components 30 that control the machine tool 1 inside. The bottom wall 212 has an insertion hole 25 that penetrates in the vertical direction at the front right part. The upper surface of the bottom wall 212 is provided with a clamping member 40 that clamps the electric wire inserted through the insertion hole 25. The clamping member 40 includes a first clamping portion 50 and a second clamping portion 70. The first clamping portion 50 includes a first extension plate 52 and an elastic member 60. The first extension plate 52 extends in a direction away from the bottom wall 212. The elastic member 60 is elastic and is fixed to the front side of the first extension plate 52 with an adhesive so as to protrude from the first extension plate 52 toward the second clamping portion 70. The elastic member 60 includes a first elastic portion 61 and a second elastic portion 62. The first elastic portion 61 and the second elastic portion 62 are located apart from each other in the extending direction of the first extending plate 52. The second clamping portion 70 includes a second extending plate 72 and an elastic member 80. The second extending plate 72 extends in a direction away from the lower wall 212 and faces the first extending plate 52. The elastic member 80 has elasticity and is fixed to the rear side of the second extending plate 72 with an adhesive so as to protrude from the second extending plate 72 toward the first clamping portion 50. The clamping member 40 clamps the electric wire at two points, between the first elastic portion 61 and the elastic member 80 and between the second elastic portion 62 and the elastic member 80. At that time, a first gap may be generated between the electric wire and the first elastic portion 61 and the elastic member 80. Also, a second gap may be generated between the electric wire and the second elastic portion 62 and the elastic member 80. The first gap and the second gap are separated by a space 90. Therefore, the control panel 20 can prevent dust from entering the inside of the storage box 21.

The first extension plate 52 has a base 53 and an extension 54. The base 53 extends in the up-down and left-right directions. The extension 54 extends upward and forward and left-right from the upper end of the base 53. The first elastic portion 61 protrudes from the base 53 toward the elastic member 80. The second elastic portion 62 protrudes from the extension 54 toward the elastic member 80. At that time, the direction in which the first gap extends and the direction in which the second gap extends intersect. Therefore, the control panel 20 can suppress the intrusion of dust into the inside of the storage box 21.

The elastic member 60 includes a right elastic portion 63 and a left elastic portion 64. The right elastic portion 63 is located on the front side of the right end of the first extension plate 52. The right elastic portion 63 protrudes toward the second clamping portion 70 and is a substantially rectangular parallelepiped extending in the direction in which the first extension plate 52 extends and in the left-right direction. The lower end of the right elastic portion 63 is connected to the right end of the first elastic portion 61, and the upper end of the right elastic portion 63 is connected to the right end of the second elastic portion 62. The left elastic portion 64 is located on the front side of the left end of the first extension plate 52. The left elastic portion 64 protrudes toward the second clamping portion 70 and is a substantially rectangular parallelepiped extending in the direction in which the first extension plate 52 extends and in the left-right direction. The lower end of the left elastic portion 64 is connected to the left end of the first elastic portion 61, and the upper end of the left elastic portion 64 is connected to the left end of the second elastic portion 62. The clamping member 40 suppresses the movement of dust between both ends in the left-right direction and the inside of the clamping member 40. Therefore, the control panel 20 can prevent dust from entering the inside of the storage box 21.

The first elastic portion 61 is disposed on the front side of the lower end of the base portion 53, which is the end portion on the lower wall 212 side in the extension direction of the first extension plate 52. The second elastic portion 62 is disposed on the upper end of the extension portion 54, which is the end portion opposite the lower wall 212 side in the extension direction of the first extension plate 52. At this time, the distance separating the first gap and the second gap becomes longer. Therefore, the control panel 20 can prevent dust from entering the inside of the storage box 21.

The first clamping unit 50 includes a fixed plate 51 fixed to the bottom wall 212, and a sheet-like elastic member 58 arranged on the underside of the fixed plate 51 and having elasticity. The second clamping unit 70 includes a fixed plate 71 fixed to the bottom wall 212, and a sheet-like elastic member 78 arranged on the underside of the fixed plate 71 and having elasticity. At this time, the elastic member 58 fills the gap between the fixed plate 51 and the bottom wall 212, and the elastic member 78 fills the gap between the fixed plate 71 and the bottom wall 212. Therefore, the control panel 20 can prevent dust from entering the inside of the storage box 21.

In the above embodiment, the bottom wall 212 and the left wall 215 are examples of the specified walls of the present invention. The elastic member 80 is an example of an opposing elastic portion of the present invention. The up-down direction is an example of a first extension direction of the present invention. The upper-front direction is an example of a second extension direction of the present invention. The left-right direction is an example of an orthogonal direction of the present invention. The right elastic portion 63 and the left elastic portion 64 are examples of both end elastic portions of the present invention. The left wall 202 is an example of a specified wall. The fixed plate 51 is an example of a first fixed plate of the present invention. The elastic member 58 is an example of a first fixed elastic portion of the present invention. The fixed plate 71 is an example of a second fixed plate of the present invention. The elastic member 78 is an example of a second fixed elastic portion of the present invention.

The present invention can be modified in various ways from the above embodiment. The various modified examples described below can be combined with each other as long as no contradictions arise. For example, the machine tool 1 in the above embodiment is a vertical machine tool with a spindle extending in the Z-axis direction, but the present invention can also be applied to a horizontal machine tool with a spindle extending horizontally.

The clamping member 40 may be disposed on the left side of the left wall 215. As shown in FIG. 8, the first clamping portion 50 is fixed to the left wall 215 above the insertion hole 26 by a bolt 27 and a nut 271. The second clamping portion 70 is fixed to the left wall 215 below the insertion hole 26 by a bolt 28 and a nut 281. At this time, the electric wire passing through the insertion hole 26 is wired inside the storage box 21 from the external power source through the clamping member 40 and the insertion hole 26 in that order.

The structures of the first clamping portion 50 and the second clamping portion 70 in the clamping member 40 are not limited to the above embodiment. The structure of the clamping member 140, which is a modified example of the clamping member 40, will be described with reference to Figures 9 to 12. For ease of explanation, the clamping member 140 will be described as being disposed on the upper surface of the lower wall 212. The clamping member 140 comprises a first clamping portion 150 and a second clamping portion 170. The first clamping portion 150 abuts the electric wire from the rear side, and the second clamping portion 170 abuts the electric wire from the front side, thereby causing the clamping member 140 to clamp the electric wire.

The first clamping portion 150 includes a fixed plate 151, a first extending plate 152, a right plate 154, a left plate 155, and elastic members 158 and 160. The fixed plate 151 is a flat plate extending in the front-rear and left-right directions. The elastic member 158 is disposed on the underside of the fixed plate 151. The elastic member 158 is a sheet-like member having the same shape as the fixed plate 151 in a plan view, and has elasticity. The fixed plate 151 and the elastic member 158 each have a hole 159 penetrating both the left and right ends in the up-down direction. The fixed plate 151 is fixed to the lower wall 212 with the elastic member 158 between them. The first extending plate 152 is a flat plate extending upward and left-right. The holes 159 of the fixed plate 151 are located on the right and left sides of the first extending plate 152, respectively. The right plate 154 is a flat plate extending forward and up-down from the right end of the first extending plate 152. The left plate 155 is a flat plate that extends forward and vertically from the right end of the first extension plate 152.

The elastic member 160 has elasticity. The elastic member 160 includes a first elastic portion 161, a second elastic portion 162, a right elastic portion 163, and a left elastic portion 164. The first elastic portion 161, the second elastic portion 162, the right elastic portion 163, and the left elastic portion 164 protrude forward from the front side of the first extension plate 152 toward the second clamping portion 170. The first elastic portion 161 is disposed on the front side of the lower end of the first extension plate 152 and has a substantially rectangular parallelepiped shape extending in the vertical and horizontal directions. The second elastic portion 162 is disposed on the front side of the upper end of the first extension plate 152 and has a substantially rectangular parallelepiped shape extending in the vertical and horizontal directions. The right elastic portion 163 is disposed on the front side of the right end of the first extension plate 152 and has a substantially rectangular parallelepiped shape extending in the vertical and horizontal directions. The lower end of the right elastic portion 163 is connected to the right end of the first elastic portion 161, and the upper end of the right elastic portion 163 is connected to the right end of the second elastic portion 162. The left elastic portion 164 is disposed on the front side of the left end of the first extension plate 152, and is a generally rectangular parallelepiped extending in the vertical and horizontal directions. The lower end of the left elastic portion 164 is connected to the left end of the first elastic portion 161, and the upper end of the left elastic portion 164 is connected to the left end of the second elastic portion 162.

The second clamping section 170 includes a fixed plate 171, a second extending plate 172, and elastic members 178 and 180. The fixed plate 171 is flat and extends in the front-rear and left-right directions. The elastic member 178 is disposed on the underside of the fixed plate 171. The elastic member 178 is in the same sheet shape as the fixed plate 171 in a plan view and has elasticity. The fixed plate 171 and the elastic member 178 have grooves 179 recessed from the front end to the rear at both left and right ends and in the center in the left-right direction. The fixed plate 171 is fixed to the lower wall 212 with the elastic member 178 between them. The second extending plate 172 is flat and extends upward and left-right from the rear end of the fixed plate 171. When clamping the electric wire inserted through the insertion hole 25, the second extending plate 172 is disposed between the right plate 154 and the left plate 155 of the first clamping section 150.

The elastic member 180 has elasticity. The elastic member 180 includes a first elastic portion 181, a second elastic portion 182, a right elastic portion 183, and a left elastic portion 184. The first elastic portion 181, the second elastic portion 182, the right elastic portion 183, and the left elastic portion 184 face the first elastic portion 161, the second elastic portion 162, the right elastic portion 163, and the left elastic portion 164, respectively, and protrude rearward from the rear side of the second extension plate 172 toward the first clamping portion 150. The first elastic portion 181 is disposed on the rear side of the lower end of the second extension plate 172 and is a substantially rectangular parallelepiped extending in the vertical and horizontal directions. The second elastic portion 182 is disposed on the front side of the upper end of the second extension plate 172 and is a substantially rectangular parallelepiped extending in the vertical and horizontal directions. The right elastic portion 183 is disposed on the rear side of the right end of the second extension plate 172 and is a substantially rectangular parallelepiped extending in the vertical and horizontal directions. The lower end of the right elastic portion 183 is connected to the right end of the first elastic portion 181, and the upper end of the right elastic portion 183 is connected to the right end of the second elastic portion 182. The left elastic portion 184 is disposed on the rear side of the left end of the second extension plate 172, and is a generally rectangular parallelepiped extending in the vertical and horizontal directions. The lower end of the left elastic portion 184 is connected to the left end of the first elastic portion 181, and the upper end of the left elastic portion 184 is connected to the left end of the second elastic portion 182.

As another modification, the structure of the elastic members 60, 80 is not limited to the above embodiment. For example, the elastic member 80 may be a generally rectangular parallelepiped that protrudes rearward from the entire rear surface of the second extension plate 72 and extends in the vertical and horizontal directions. Even in this case, the clamping member 40 has a space surrounded by the first extension plate 52 of the first clamping portion 50, the elastic member 60, and the elastic member 80. Therefore, the control panel 20 can prevent dust from entering the inside of the storage box 21.

The elastic member 60 may have a third elastic portion disposed between the first elastic portion 61 and the second elastic portion 62 in the direction in which the first extension plate 52 extends. The first elastic portion 61 and the second elastic portion 62 may be disposed apart from each other in the direction in which the first extension plate 52 extends, and are not limited to being disposed at the lower end of the base portion 53 and the upper end of the extension portion 54.

The structures of the first extending plate 52 of the first clamping portion 50 and the second extending plate 72 of the second clamping portion 70 are not limited to the above embodiment. For example, the first extending plate 52 may be a plate-like shape that protrudes rearward and upward from the fixed plate 51 and extends in the left-right direction, and the second extending plate 72 may be a plate-like shape that protrudes frontward and upward from the fixed plate 71 and extends in the left-right direction. The first extending plate 52 may have a second extending portion that bends and extends from the upper end of the extending portion 54.

In addition to the electric wires extending from a power source external to the machine tool 1, the clamping member 40 may also clamp, for example, a signal wire that transmits and receives an electric signal to control the electrical component 30.

The elastic members 58, 158, 60, 160, 78, 178, 80, and 180 may be made of any material having elasticity, such as rubber, sponge, or urethane.

1 Machine tool 20 Control panel 21 Storage box 30 Electrical component 40, 140 Clamping member 50, 150 First clamping portion 51, 151 Fixing plate 52, 152 First extension plate 53 Base portion 54 Extension portion 58, 158 Elastic member 60, 160 Elastic member 61, 161 First elastic portion 62, 162 Second elastic portion 63, 163 Right elastic portion 64, 164 Left elastic portion 70, 170 Second clamping portion 71, 171 Fixing plate 72, 172 Second extension plate 78, 178 Elastic member 80, 180 Elastic member

Claims (4)

A control panel including electrical components for controlling a machine tool, a storage box for storing the electrical components in a space surrounded by a plurality of wall sections, a through hole formed in a predetermined wall that is a part of the wall sections and through which an electric wire electrically connected to the electrical components can be inserted, and a clamping member for clamping the electric wire inserted through the through hole,
The clamping member is
a first clamping portion and a second clamping portion capable of clamping the electric wire inserted into the insertion hole,
The first clamping portion is
A first extending plate extending in a direction away from the predetermined wall;
A first elastic portion and a second elastic portion are provided, which protrude from the first extension plate toward the second clamping portion and are arranged apart from each other in the extension direction of the first extension plate,
The second clamping portion is
A second extending plate extending in a direction away from the predetermined wall;
an elastic member having elasticity, the elastic member protruding from the second extension plate toward the first clamping portion and an opposing elastic portion having elasticity, the first elastic portion, the second elastic portion, and the opposing elastic portion clamping the electric wire,
The first extension plate is
A base portion extending in a first extension direction intersecting the predetermined wall;
an extension portion that extends from the base portion while being bent in a second extension direction different from the first extension direction,
The first elastic portion is disposed on the base portion, and the second elastic portion is disposed on the extension portion,
A control panel characterized in that it is an elastic member having elasticity, connecting one end of the first elastic portion to one end of the second elastic portion and the other end of the first elastic portion to the other end of the second elastic portion, and has elastic portions at both ends protruding from the first extension plate toward the second clamping portion . A control panel as described in claim 1 , characterized in that the first elastic portion is arranged at the end portion of the first extension plate on the specified wall side, and the second elastic portion is arranged at the other end portion opposite the end portion. The first clamping portion is
A first fixing plate fixed to the predetermined wall;
a first fixed elastic portion having elasticity between the first fixed plate and the predetermined wall,
The second clamping portion is
A second fixing plate fixed to the predetermined wall;
The control panel according to claim 1 or 2, further comprising a second fixed elastic portion having elasticity between the second fixed plate and the predetermined wall. A machine tool comprising a control panel according to any one of claims 1 to 3 .

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