JPH0546494U - Scale operation head device for drafting machine - Google Patents

Abstract

(57) [Summary] [Structure] A scale operation head device in a drafting machine in which the rotation angle of the scale is digitally displayed on the top surface of the handle. A scale operation head device in a drafting machine, in which a scale rotation shaft is provided at a position offset from the center of the top surface of the handle in the scale direction, and a digital display unit for the scale rotation angle is also provided at a position offset in the scale direction. A scale operating head device in a drafting machine, wherein the digital display unit is provided so as to be located in a curved portion of a thumb and an index finger when the handle is gripped. A scale operating head device in a drafting machine, wherein the display changeover switch of the digital display unit is housed in a groove provided on the top surface of the handle.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a scale operation head device for a drafting machine.

[0002]

[Prior Art]

 The conventional technique is that the scale rotating shaft is borne by the immobile bearing portion of the scale operating head, the scale mounting plate is provided at the lower end of the scale rotating shaft, and the handle is provided at the upper end of the scale rotating shaft. In the scale operation head device of the drafting machine, which performs the rotation operation of the scale and digitally displays the rotation angle of the scale, the digital display of the scale rotation angle displays the scale mounting plate or the immovable boundary. It was provided on the upper surface of the bearing.

[0003]

[Problems to be solved by the device]

 Therefore, the scale operation head device for the conventional drafting machine requires a large space for the digital display section in the scale mounting plate and the bearing portion between the handle and the scale. It was a composition that was not suitable for.

[0004]

[Means for solving problems]

 Therefore, according to the present invention, the scale rotating head is rotatably supported by the immovable bearing portion of the scale operating head, the scale mounting plate is provided at the lower end of the scale rotating shaft, and the handle is provided at the upper end thereof. In the scale operation head device of the drafting machine, which is capable of rotating the attached scale and displaying the rotation angle of the scale digitally, the scale rotation angle digital display is provided on the top surface of the handle. The present invention provides a scale operation head device in a drafting machine.

Further, according to the present invention, the scale rotating shaft is supported by the immovable bearing portion of the scale operating head, the scale attaching plate is provided at the lower end of the scale rotating shaft, and the handle is provided at the upper end thereof. In the scale operation head device of the drafting machine that performs the rotation operation of the scale attached to the attachment plate and digitally displays the rotation angle of the scale, a position offset in the scale direction from the center of the top surface of the handle. In addition to the scale rotation shaft, the scale rotation angle is digitally displayed at a position offset from the center of the top surface of the handle in the scale direction. To provide a door device.

Further, the present invention provides the above scale operating head device, wherein the central portion of the top surface of the handle is positioned such that the digital display portion of the scale rotation angle is located within the curved portion of the thumb and forefinger when the handle is gripped. In addition to providing a scale operation head device in a drafting machine, which is provided at a position offset from the scale direction in the scale direction, further, in each of the above devices, a display changeover switch of a digital display unit of the scale rotation angle is provided. A scale operating head device for a drafting machine, characterized in that the scale operating head device is housed in a groove provided on the top surface of the handle.

[0007]

[Action]

 According to the present invention, in the scale operating head device of the drafting machine, since the digital display of the scale rotation angle is provided on the top surface of the handle, the scale operating head device is provided between the handle and the scale mounting plate. It is possible to eliminate the need for a large space for the digital display provided on the bearing part of the device, and the scale operating head can be made compact accordingly, which is suitable for the scale operating head device of a small drafting machine with a small drawing board. Suitable and effective in using the drawing board effectively.

Further, according to the present invention, in the scale operation head device in the drafting machine, the scale rotation shaft is provided at a position offset from the central portion of the top surface of the handle in the scale direction, and the scale rotation angle is similarly set. Since the digital display is located at a position offset from the center of the top surface of the handle in the scale direction, when the scale is rotated with the handle, the handle should swing around the axis of rotation near the scale. Since it rotates, it has a wide operating radius and is easy to handle, and at the same time the digital display is offset from the center of the top surface of the handle in the scale direction, it has a small range around the scale rotation axis. Since it turns around, the digital display is easy to see.

Further, according to the present invention, in the above scale operating head device, the digital display portion of the scale rotation angle of the handle is positioned so as to be located inside the curved portions of the thumb and forefinger when the handle is grasped. Since it is installed at a position offset from the center of the top surface in the scale direction, the digital display is located inside the curved parts of the thumb and forefinger when the scale is rotated with the handle, making it easy to see. Further, according to the present invention, in each of the above-mentioned devices, since the display changeover switch of the digital display section of the scale rotation angle is housed in the groove provided on the top surface of the handle, the switch operation is performed in the groove. It can be searched and performed only with the fingertips, and since it does not protrude from the handle surface, it has the function of preventing accidental pushing.

[0010]

【Example】

 The present invention will be described in detail with reference to the embodiments shown below. In FIG. 3, reference numeral 1 is a drawing board which is drawn smaller than it actually is. Reference numeral 2 is a horizontal rail provided along the upper edge of the drawing board 1. A vertical rail 3 is supported by a horizontal cursor (not shown) which is movable along the horizontal rail 2 via a connecting portion 4 at its upper end portion, and is kept perpendicular to the horizontal rail 2 on the drawing board 1. It is configured to move laterally. Reference numeral 10 is a scale operation head equipped with a scale 5, which is connected to a vertical cursor (not shown) movable along the vertical rail 3 through a parallel vertical movement mechanism 6, and the scale 5 on the drawing board 1. Is configured to rotate and move in parallel. A lower roller (not shown) is provided at the lower end of the vertical rail 3. A tray 7 having a U-shaped cross section on which a writing implement is placed is integrally provided at the lower edge of the drafting board 1, and the lower roller runs along the lower edge of the drafting board 1 on the tray 7. The guide rail portion 8 is integrally provided. The tray 7 is provided with two ribs 9 for partitioning and reinforcing inside the tray 7.

Further, as shown in FIGS. 1 and 2, the scale operating head 10 according to the present invention includes a stationary bearing portion 11 connected to the vertical cursor through a parallel vertical movement mechanism 6 to form a drawing board. 1, a scale rotation shaft (not shown) is vertically supported, a scale mounting plate 12 is provided at the lower end of the scale rotation shaft, and a handle 15 is provided at the upper end, and the scale mounting plate 12 is attached by the handle 15. The scale 5 is configured to be rotated on the drawing board 1. Reference numeral 13 is a cover body that rotates integrally with the scale mounting plate 12. Further, between the stationary bearing portion 11 and the rotating scale mounting plate 12, there is provided means for reading the scale rotation angle, which comprises a conventionally known encoder or the like.

Here, in the present invention, in the scale operating head device in the drafting machine for digitally displaying the rotation angle of the scale, the scale rotation angle digital display unit 16 is provided on the top surface of the handle 15. It is characterized by By providing the digital display portion 16 on the top surface of the handle 15, the area of the portion of the immovable portion 11 where the digital display portion is conventionally provided can be reduced, and as shown in the figure, the immovable portion 11 is It is also possible to provide the protractor board 14 and to display the rotation angle of the scale 5 in analog form with an index board (not shown) provided at the hem of the handle 15.

Further, according to the present invention, the scale rotation shaft (axis center P) is provided at a position deviated in the direction of the scale 5 from the center portion of the top surface of the handle 15 where the center O of the plane figure is located, and the scale is similarly provided. The rotation angle digital display unit 16 is provided at a position offset from the center of the top surface of the handle in the scale 5 direction. In the illustrated embodiment, the plane figure of the top surface of the handle 15 is a circle, and its center O is the center of the circle. The position of the axis P of the scale rotating shaft is the center of the circle of the protractor plate 14. Therefore, the handle 15 is rotated so as to swing around the scale rotation axis P which is offset from the central portion O of the top surface in the scale 5 direction, and the operating radius of the handle 15 is widened to the opposite side of the scale 5. In addition to having the effect of making it easy to handle, at a position where the digital display portion 16 is offset from the central portion O of the top surface of the handle 15 in the scale direction, the digital display portion 16 rotates in a small range around the axis P of the scale rotation shaft in the vicinity thereof. Therefore, there is an effect that the digital display section 16 is easily visible.

Further, according to the present invention, in the above scale operating head device, the top part of the handle 15 is positioned such that the digital display portion 16 of the scale rotation angle is located in the curved portion of the thumb and forefinger when the handle 15 is gripped. It is characterized in that it is provided at a position offset from the central portion O of the surface in the scale 5 direction. In the case of the illustrated embodiment, the handle 15 is provided with an angle operation adjusting lever 17 of the scale 5 in the direction of 4 o'clock from the central portion O of the top surface, and the digital display unit 16 is set to 2 o'clock with the hour hand. Since the right thumb is gripped by the handle 15 so that the angle operation adjusting lever 17 of the scale 5 comes into contact with the thumb of the right hand, the digital display portion 16 is positioned within the curved portion of the thumb and forefinger. It will be.

Further, according to the present invention, in each of the above-mentioned devices, the display changeover switch 18 of the digital display unit 16 for the scale rotation angle is housed in the groove 19 provided on the top surface of the handle 15. Characterize. The switch 18 is a power switch, a zero reset switch, a baseline changeover switch, a display unit changeover switch, or the like, and is arranged at concentric positions equidistant from the central portion O on the top surface. As a result, the switch operation can be performed by searching the groove 19 only with the fingertip, and the switches 18 do not project from the handle surface, so that they cannot be pressed by mistake. In addition, 20 is a scale attachment / detachment screw, 21 is a scale fixing metal fitting, 22 is a scale fine movement adjusting screw, 23 is a horizontal brake for fixing a horizontal cursor (not shown) to the horizontal rail 2 by a conventionally known means, and 24 is a vertical cursor ( A vertical brake (not shown) is fixed to the vertical rail 3.

[0016]

【effect】

 As described above, according to the scale operating head device in the drafting machine according to the present invention, in the scale operating head device in the drafting machine, since the digital display of the scale rotation angle is provided on the top surface of the handle, the conventional scale operating head device is provided. It is possible to eliminate the need for a large space for the digital display provided on the bearing between the handle and the scale mounting plate in the device, and the scale operating head can be made compact accordingly, and the drawing board It is suitable for a scale operation head device of a small drafting machine with a small size, and has an effect that a drafting board can be effectively used. Further, according to the present invention, in the scale operation head device in the drafting machine, the scale rotation shaft is provided at a position offset from the center of the top surface of the handle in the scale direction, and the scale rotation angle digital display is also provided. Since it is provided at a position offset from the center of the top surface of the handle in the scale direction, when the scale is rotated with the handle, the handle turns so as to swing around the rotation axis near the scale. The handle has a wide operating radius, which makes it easier to handle, and at a position where the digital display is offset from the center of the top surface of the handle in the scale direction, a small range around the scale rotation axis in the vicinity. Since it is surrounded by a circle, it has the effect of making it easy to see the digital display. Further, according to the present invention, in the above scale operating head device, the digital display portion of the scale rotation angle is provided on the top surface of the handle so that it is located in the curved portion of the thumb and forefinger when the handle is grasped. Since it is located at a position offset from the center in the direction of the scale, the digital display is located inside the curved parts of the thumb and forefinger and is easy to see when the scale is rotated with the handle. Further, according to the present invention, in each of the above-mentioned devices, since the display changeover switch of the digital display section of the scale rotation angle is housed in the groove provided on the top surface of the handle, the switch operation is performed in the groove. It can be searched and performed only with the fingertips, and since it does not protrude from the handle surface, it has the effect of preventing accidental pushing.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing an embodiment of the device of the present invention.

FIG. 2 is a schematic front view of an embodiment of the device of the present invention.

FIG. 3 is a schematic plan view showing a mode of use of an embodiment of the device of the present invention.

[Explanation of symbols]

 1: Drawing board 2: Horizontal rail 3: Vertical rail 4: Connection part 5: Scale 6: Parallel vertical movement mechanism 7: Tray 8: Guide rail part 9: Rib 10: Scale operation head 11: Bearing part 12: Scale mounting plate 13: cover body 14: protractor board 15: handle 16: digital display 17: angle operation adjustment lever 18: switch 19: groove 20: scale attachment / detachment screw 21: scale fixing bracket 22: scale fine adjustment screw 23: lateral brake 24: Vertical brake

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsuhiko Mishiro 2-5-2 Higashi Oizumi, Nerima-ku, Tokyo Asahi Seiko Co., Ltd.

Claims (4)

[Scope of utility model registration request] 1. A scale rotating head is supported by an immovable bearing portion of a scale operating head, a scale mounting plate is provided at a lower end portion of the scale rotating shaft, and a handle is provided at an upper end portion thereof, and the scale mounting plate is attached to the scale mounting plate by the handle. In the scale operation head device in the drafting machine, which performs the rotation operation of the scale and digitally displays the rotation angle of the scale, the scale rotation angle digital display unit is provided on the top surface of the handle. Scale operation head device for a drafting machine. 2. A scale rotating shaft is supported by a stationary bearing portion of a scale operating head, a scale mounting plate is provided at a lower end portion of the scale rotating shaft, and a handle is provided at an upper end portion thereof, and the scale mounting plate is attached to the scale mounting plate by the handle. In the scale operation head device in the drafting machine that performs the rotation operation of the scale and digitally displays the rotation angle of the scale, the scale rotation axis is located at a position offset from the center of the top surface of the handle in the scale direction. And a digital display section for the scale rotation angle is provided at a position offset from the center of the top surface of the handle in the scale direction in the same manner. 3. The device according to claim 1 or 2, wherein the handle is arranged such that a digital display portion of a scale rotation angle is located in a curved portion of a thumb and an index finger when the handle is gripped. A scale operation head device in a drafting machine, characterized in that the scale operation head device is provided at a position offset in the scale direction from the center of the top surface of the. 4. Claims 1 and 2 within the scope of utility model registration claims
Alternatively, the scale operating head device in the drafting machine according to item 3, wherein the display changeover switch of the digital display unit for the scale rotation angle is housed in a groove provided on the top surface of the handle.