Operation panel device

Abstract

To provide an operation panel device that is able to easily change the direction of an operation panel within a fixed range regardless of a pivoting angle of a pivot arm to a stationary portion.SOLUTION: An operation panel device includes: a pivot arm 3 that rotates around a first axis O1 with respect to a stationary portion; an operation panel that rotates around a second axis O2 parallel to the first axis O1 with respect to the pivot arm 3; a first sprocket 5 fixed to the stationary portion and that rotates around the first axis O1 with respect to the pivot arm 3; a second sprocket 6 that rotates around the second axis O2 with respect to the pivot arm 3; an endless chain 7 wound around both the sprockets 5, 6; a stopper 8 that rotates together with the second sprocket 6; and an abutting member 9 that rotates together with the operation panel to abut on the stopper 8 and determine a rotation range of the operation panel. The ratio of the relative rotational speed of the first sprocket 5 to the pivot arm 3 and the relative rotational speed of the second sprocket to the pivot arm 3 is 1:1.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a control panel device provided in, for example, a machine tool. [Background technology]

[0002] One example of the above-mentioned control panel device is known (see Patent Document 1), which includes a first pivot provided on a fixed part of a machine tool, a swivel arm supported so as to be rotatable around the first pivot, a second pivot provided at the tip of the swivel arm, a control panel that is rotatably supported on the second pivot and is provided so that the orientation of the operating surface relative to the swivel arm can be manually changed, and a linkage mechanism that links the swivel movement of the swivel arm relative to the fixed part and the rotational movement of the control panel relative to the swivel arm, and in which the linkage relationship between the swivel movement of the swivel arm and the rotational movement of the control panel by the linkage mechanism is released by a switch means provided on the control panel.

[0003] In the operation panel device described in Patent Document 1, when the pivoting movement of the pivot arm by the interlocking mechanism and the rotational movement of the operation panel are in an interlocking relationship, the rotation angle of the operation panel is determined according to the pivot angle of the pivot arm while the pivot arm pivots around the first pivot from the first angle to the second angle. Also, when the interlocking relationship between the pivoting movement of the pivot arm by the interlocking mechanism and the rotational movement of the operation panel is released, the orientation of the operation panel can be manually changed at any pivot position while the pivot arm pivots around the first pivot from the first angle to the second angle. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2003-103423 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the operation panel device described in Patent Document 1, when the rotational movement of the swivel arm and the rotational movement of the operation panel are linked by an interlocking mechanism, the rotation angle of the operation panel is determined according to the rotation angle of the swivel arm, and the orientation of the operation panel is determined accordingly, so that the orientation of the operation panel cannot be easily changed according to the position of the worker or the type of work at any rotation position of the swivel arm. Also, in order to change the orientation of the operation panel at any rotation position of the swivel arm, it is necessary to operate the switch means to release the interlocking relationship between the rotational movement of the swivel arm and the rotational movement of the operation panel by the interlocking mechanism, which is a cumbersome task.

[0006] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to solve the above problems and provide a control panel device that allows the orientation of the control panel to be easily changed within a certain range regardless of the rotation angle of the rotating arm relative to the fixed part. [Means for solving the problem]

[0007] In order to achieve the above object, the present invention comprises the following aspects.

[0008] 1) A control panel device including a rotating arm provided on a fixed portion so as to rotate about a first axis, and a control panel provided on the rotating arm so as to rotate about a second axis parallel to the first axis, a first winding wheel provided on the swivel arm concentrically with the first axis and fixed to the fixed portion and rotating relatively around the first axis with respect to the swivel arm; a second winding wheel provided on the swivel arm concentrically with the second axis and rotating relatively around the second axis with respect to the swivel arm; an endless winding transmission member stretched across both winding wheels; a stopper provided on the swivel arm and rotating together with the second winding wheel around the second axis with respect to the swivel arm; and a contact member provided on the operation panel and rotating together with the operation panel around the second axis and abutting against the stopper to determine a rotation range of the operation panel around the second axis with respect to the swivel arm, wherein the ratio of the relative rotation speed of the first winding wheel with respect to the swivel arm and the relative rotation speed of the second winding wheel with respect to the swivel arm is 1:1.

[0009] 2) A control panel device as described in 1) above, wherein a cross section of the abutment member cut on a plane perpendicular to the second axis is arc-shaped, and the control panel rotates around the second axis relative to the pivot arm between the position where one circumferential end of the abutment member abuts against the stopper and the position where the other circumferential end of the abutment member abuts against the stopper.

[0010] 3) The control panel device according to 1) or 2) above, wherein the first and second winding wheels are sprockets having the same number of teeth, and the winding transmission member is a chain. Effect of the Invention

[0011] According to the operation panel devices 1) to 3) above, when the swivel arm swivels around the first axis, the stopper maintains a constant phase regardless of the swivel angle of the swivel arm, so it becomes possible to rotate the operation panel around the second axis relative to the swivel arm within the range in which the abutment member abuts against the stopper. Therefore, regardless of the swivel angle of the swivel arm relative to the fixed part, the orientation of the operation panel can be easily changed within a certain range. [Brief description of the drawings]

[0012] [Figure 1] 1 is a perspective view showing a control panel device according to the present invention; [Diagram 2] 2 is an enlarged perspective view showing a part of a swivel arm of the operation panel device of FIG. 1 cut away and viewed from below. FIG. [Diagram 3] 3 is a cross-sectional view taken along line AA in FIG. 2. [Figure 4] FIG. 4 is a cross-sectional view taken along line BB in FIG. [Diagram 5] FIG. 5 is a partially enlarged view of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0014] FIG. 1 shows a pendant device according to the present invention provided in a machine tool, and FIGS. 2 to 5 show the configuration of the pendant device according to the present invention.

[0015] In Figures 1 to 4, the operation panel device includes a swivel arm 3 mounted on a support member 2 (fixed part) fixed to the front surface of the machine tool 1 so as to rotate around a first axis O1, and an operation panel 4 mounted on the swivel arm 3 so as to rotate around a second axis O2 parallel to the first axis O1.

[0016] The control panel device also includes a first sprocket 5 as a first winding wheel that is provided on the rotating arm 3 concentrically with the first axis O1, fixed to the support member 2, and rotates relatively about the first axis O1 with respect to the rotating arm 3, a second sprocket 6 as a second winding wheel that is provided on the rotating arm 3 concentrically with the second axis O2 and rotates relatively about the second axis O2 with respect to the rotating arm 3, an endless chain 7 as an endless winding transmission member that is stretched around both sprockets 5, 6, a stopper 8 that is provided on the rotating arm 3 and rotates about the second axis O2 together with the second sprocket 6, and an abutment member 9 that is provided to rotate about the second axis O2 together with the control panel 4 and abuts against the stopper 8 to determine the rotation range of the control panel 4 about the second axis O2 with respect to the rotating arm 3. The ratio of the relative rotational speed of the first sprocket 5 to the pivot arm 3 and the relative rotational speed of the second sprocket 6 to the pivot arm 3 is 1:1.

[0017] The rotating arm 3 is a hollow, approximately rectangular parallelepiped having a top wall 31, a bottom wall 32, and a peripheral wall 33, and is attached to a vertical fixed shaft 11 fixed to the support member 2 in an upwardly protruding manner so as to rotate around the fixed shaft 11. The fixed shaft 11 is a vertical cylinder with both upper and lower ends open, and the central axis of the fixed shaft 11 coincides with a first axis O1. A first rotating device 12 is disposed around the fixed shaft 11, and includes a lower member 121 attached to the upper surface of the support member 2 and an upper member 122 attached to the lower surface of the bottom wall 32 of the rotating arm 3 and rotatable about the first axis O1 relative to the lower member 121 via a bearing (not shown). The rotating arm 3 rotates about the first axis O1 relative to the support member 2 via the first rotating device 12.

[0018] The upper end of the fixed shaft 11 that attaches the swivel arm 3 to the support member 2 penetrates the bottom wall 32 and protrudes into the swivel arm 3, and a ring 13 is screwed around the periphery of the protruding portion 111, and the first sprocket 5 is fixed onto the ring 13. As a result, the first sprocket 5 is fixed to the support member 2 and is adapted to rotate relatively to the swivel arm 3 about the first axis O1.

[0019] A vertical rotating shaft 14 that rotates around the second axis O2 relative to the rotating arm 3 is provided in the rotating arm 3 concentrically with the second axis O2. The rotating shaft 14 is cylindrical with both ends open, and its central axis coincides with the second axis O2. The rotating shaft 14 is rotatably attached to a support 15 that protrudes upward from the bottom wall 32 of the rotating arm 3. As shown in FIG. 5, a cylindrical bearing mounting member 16 is fixed to the support 15 by bolts 17 and nuts 18, and the rotating shaft 14 is attached around the bearing mounting member 16 via a rolling bearing 19. An outward flange 141 is integrally provided at the lower end of the rotating shaft 14, and the second sprocket 6 is fixed in a state of being placed on the outward flange 141. As a result, the second sprocket 6 rotates together with the rotating shaft 14 around the second axis O2 relative to the rotating arm 3.

[0020] The operation panel 4 is attached to the top wall 31 of the rotating arm 3 via the second rotating device 21 so as to rotate about the second axis O2. The second rotating device 21 has a lower member 211 attached to the upper surface of the top wall 31 of the rotating arm 3, and an upper member 212 attached to the lower surface of the operation panel 4 and rotatable about the second axis O2 relative to the lower member 211 via a bearing (not shown). The lower surface of the lower member 211 faces the inside of the rotating arm 3 via a through hole 311 formed in the top wall 31 of the rotating arm 3.

[0021] The stopper 8 is fixed to the upper end surface of the rotating shaft 14 in an upwardly protruding manner so as to rotate around the second axis O2 together with the second sprocket 6. In a horizontal cross section, the stopper 8 has two side surfaces 81, 82 which are located on a circumference centered on the second axis O2 and on two straight lines extending radially from the second axis O2. The two side surfaces 81, 82 form a certain angle with the second axis O2 as the center in the horizontal cross section of the stopper 8. The upper end of the stopper 8 extends to the vicinity of the top wall 31 of the rotating arm 3.

[0022] The abutment member 9 has a horizontal cross-sectional shape of an arc centered on the second axis O2, and is fixedly provided on a portion of the lower surface of the lower member 211 of the second rotating device 21 facing the inside of the rotating arm 3. In this embodiment, the abutment member 9 rotates about the second axis O2 relative to the rotating arm 3 between a first position (see solid line in FIG. 3) where one end abuts against one side surface 81 of the stopper 8, and a second position (see chain line in FIG. 3) where the other end abuts against the other side surface 82 of the stopper 8. Therefore, the operation panel 4 rotates about the second axis O2 together with the abutment member 9 relative to the rotating arm 3 between the first position shown by the solid line in FIG. 1 and the second position shown by the chain line in the same figure.

[0023] In the above-mentioned operation panel device, when the swivel arm 3 is rotated around the first axis O1 in the counterclockwise direction in Fig. 3 (the direction indicated by the arrow X in Fig. 3), the first sprocket 5 rotates in the clockwise direction in Fig. 3 relative to the swivel arm 3, the endless chain 7 moves in the direction of the arrow Y in Fig. 3, the second sprocket 6 rotates around the second axis O2 in the clockwise direction in Fig. 3 by the amount of this movement, and the stopper 8 rotates in the same direction as the rotation of the second sprocket 6. Here, since the ratio of the relative rotation speed of the first sprocket 5 with respect to the swivel arm 3 to the relative rotation speed of the second sprocket 6 with respect to the swivel arm 3 is 1:1, the stopper 8 rotates by the same angle as the rotation angle of the swivel arm 3 with respect to the support member 2 about the first axis O1, and maintains a constant phase regardless of the change in the rotation angle of the swivel arm 3 with respect to the support member 2 about the first axis O1. As a result, regardless of changes in the rotation angle of the rotating arm 3 about the first axis O1, the orientation of the operation panel 4 can always be kept constant relative to the support member 2, i.e., the machine tool, within the range in which both circumferential ends of the abutting member 9 abut against both side surfaces 81, 82 of the stopper 8. Moreover, the orientation of the operation panel 4 can be easily changed within the range in which both circumferential ends of the abutting member 9 abut against both side surfaces 81, 82 of the stopper 8.

[0024] In the above-described embodiment, sprockets are used as the first and second winding wheels, and an endless chain 7 is used as the endless winding transmission member, but this is not limited to this. For example, pulleys, preferably toothed pulleys, may be used as the first and second winding wheels, and an endless belt, preferably an endless toothed belt, may be used as the endless winding transmission member. [Industrial Applicability]

[0025] The control panel device according to the present invention is preferably used in a machine tool. [Explanation of symbols]

[0026] 1: machine tool, 2: support member (fixed part), 3: swivel arm, 4: operation panel, 5: first sprocket (first winding wheel), 6: second sprocket (second winding wheel), 7: endless chain (winding transmission member), 8: stopper, 9: contact member

Claims

1. A control panel device including a rotating arm provided on a fixed portion so as to rotate about a first axis, and a control panel provided on the rotating arm so as to rotate about a second axis parallel to the first axis, a first winding wheel provided on the swivel arm concentrically with the first axis and fixed to the fixed portion and rotating relatively around the first axis with respect to the swivel arm; a second winding wheel provided on the swivel arm concentrically with the second axis and rotating relatively around the second axis with respect to the swivel arm; an endless winding transmission member stretched across both winding wheels; a stopper provided on the swivel arm and rotating together with the second winding wheel around the second axis with respect to the swivel arm; and a contact member provided on the operation panel and rotating together with the operation panel around the second axis and abutting against the stopper to determine a rotation range of the operation panel around the second axis with respect to the swivel arm, wherein the ratio of the relative rotation speed of the first winding wheel with respect to the swivel arm and the relative rotation speed of the second winding wheel with respect to the swivel arm is 1:

1.

2. The control panel device of claim 1, wherein a cross section of the abutment member cut on a plane perpendicular to the second axis is arc-shaped, and the control panel is adapted to rotate around the second axis relative to the pivot arm between a position where one circumferential end of the abutment member abuts against the stopper and a position where the other circumferential end of the abutment member abuts against the stopper.

3. 3. The control panel device according to claim 1, wherein the first and second winding wheels are sprockets having the same number of teeth, and the winding transmission member is a chain.

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