JPS647600B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rope guide mechanism in a rail type universal parallel ruler device or a coordinate analyzer.

Conventionally, in this type of device, a cover member 2 is placed in contact with the end of a vertical rail 1 as shown in FIG.
A wire rope 4 connecting a balance weight and a vertical cursor is stretched around a rope guide roller 3 rotatably supported by the cover member 2.
However, when the roller 3 is placed inside the vertical rail 1, the bottom wall 1a of the vertical rail 1 becomes an obstacle.
Cut out this bottom wall 1a and cut out the part 1
The rollers 3 had to be positioned at b, and the vertical rail 1 had to be cut.

The present invention has been devised in view of the above points, and an object of the present invention is to provide a rope guide mechanism that allows rope guide rollers to be easily attached to a vertical rail without special processing on the vertical rail. The purpose is to

The configuration of the present invention will be described in detail below with reference to embodiments shown in the accompanying drawings.

In FIG. 1, reference numeral 5 denotes a drawing board, which is supported by a drawing table which can be tilted freely so as to be fixed at a desired angle of inclination. Reference numeral 6 denotes a horizontal rail disposed on the upper side of the drawing board 5, to which a horizontal cursor 7 is slidably attached, and one end of a vertical rail 8 is connected to this horizontal cursor 7. An arm is fixed to the lower surface of a cover member 9 fixed to the end of the vertical rail 8, and a tail roller 10 is rotatably supported on the arm 9. The vertical rail 8 has a second
As shown in the figure, a vertical guide rail section 11 and horizontal guide rail sections 12 and 13 are formed along the longitudinal direction, and a top wall 14, a side wall 15, and a bottom wall 16 are formed.
A weight insertion space 17 is formed surrounded by. A balance weight 1 is provided in the space 17.
A roller 19 rotatably supported by the balance weight 18 is in contact with the surface of the bottom wall 16. A wire rope 20 formed in a loop along the vertical rail 8 is connected to both ends of the weight 18 . Reference numeral 21 denotes a vertical cursor, and four horizontal rollers 22 and three vertical rollers 23 are rotatably attached to the shaft erected on this cursor, and the rollers 22 and 23 are attached to the vertical guide rail section 11. and the bottom surfaces of the horizontal guide rail portions 12 and 13 in a rotatable manner. A head portion 24 is attached to the vertical cursor 21 via a connecting member, and a straightedge 25 is attached to the head portion 24.
The cover member 9 is formed into a box shape so as to accommodate the rope guide roller 26 therein, and has a pair of rising portions 27 and 28 formed therein. Recessed portions 29,
30 are drilled. Reference numeral 31 designates a U-shaped frame body, at both ends of which shaft supports 33 and 34 are provided with holes 32 for pins, and fitting portions 35 and 36 are formed corresponding to the recessed portions 29 and 30. has been done. A rope guide roller 26 is rotatably supported by a pin 37 inserted and suspended between the shaft supports 33 and 34.

In the above configuration, the fitting parts 35 and 36 of the frame 31 are fitted into the recessed parts 29 and 30 of the cover member 9, the roller 26 is positioned between the rising parts 27 and 28 of the cover member 9, and then, The cover member 9 is fixed to the end of the vertical rail 8 by screwing a screw rod inserted into the side wall of the cover member 9 into a screw hole opened in the end face of the vertical rail 8. In this state, the frame 31 is held between the cover member 9 and the end of the vertical rail 8, and the end surface of the frame 31 is attached to the bottom wall 1 of the vertical rail 8.
6. Crimp the end face of 6. Note that with the above configuration, the hole for the pin 37 is housed inside the cover member 9, so there is no need to provide an externally exposed hole in the cover member 9. The cover member 9 and the roller 2
6 are arranged at both ends of the vertical rail 8. The wire rope 20 is stretched around rollers 26 at both ends of the vertical rail 8, and
0 is connected to the vertical cursor 21.

Next, the operation of this embodiment will be explained.

First, the drawing board 5 is set at a desired angle in the upright direction with respect to the horizontal state. When the grip handle of the head section 24 is grasped by hand and force is applied to it in an arbitrary direction parallel to the surface of the drawing board 5, the vertical rail 8 moves along the horizontal rail 6 in the horizontal direction in FIG. Vertical cursor 21
can be moved along the vertical guide rail section 11 of the vertical rail 8, and the head section 24 can be moved to a desired position on the drawing board 5. When the vertical cursor 21 moves along the vertical rail 8, this and the rope 20
The balance weights 18, which are connected by , move in opposite directions along the longitudinal rails 8. When the head section 24 is stopped at a desired position on the drawing board 5 and the grip handle is released, the vertical cursor 21 moves to the vertical rail 8.
The kinetic force of the balance weight 18 to fall downward along the drawing board 5 along the vertical rail 8 is balanced by the kinetic force of the balance weight 18 due to its own weight to fall below the drawing board 5 along the vertical rail 8, and the vertical cursor 21 and Head part 2
4 rests stably at a stop position on an arbitrary inclined drawing board.

As described above, the present invention provides a space in which the rope guide roller is housed inside the cover member so as to be located in the longitudinal extension direction of the vertical rail with respect to the end surface of the vertical rail, and the space is provided in the space to accommodate the rope guide roller. Since the rollers are configured to be rotatably arranged, there is an advantage that the rope guide rollers can be arranged at the end of the rail without machining the bottom wall of the rail.

[Brief explanation of drawings]

Fig. 1 is an overall plan view, Fig. 2 is a sectional view of the rail, Fig. 3 is a side sectional view of the main part, Fig. 4 is an exploded perspective view of the main part, and Fig. 5 is a diagram for explaining the prior art. FIG. 1... Vertical rail, 2... Cover member, 3... Rope guide roller, 4... Wire rope, 5... Drawing board, 6... Horizontal rail, 7... Horizontal cursor, 8...
Vertical rail, 9...Cover member, 10...Tail roller, 11...Vertical guide rail portion, 12, 13...
...Horizontal guide rail section, 14...Ceiling wall, 15...
Side wall, 16...bottom wall, 17...weight insertion space, 18...balance weight, 20...wire rope, 21...vertical cursor, 22...horizontal roller, 23...vertical roller, 24... head part,
25... Straight ruler, 26... Rope guide roller, 2
7, 28... Rise part, 29, 30... Recessed part, 31... Frame body, 33, 34... Pivotal support, 3
5, 36...fitting portion, 37...pin.

Claims (1)

[Claims] 1. A horizontal rail 6, a vertical rail 8 movably connected to the horizontal rail 6 in a perpendicular relationship, and a vertical cursor 21 movably attached to one side of the bottom wall 16 of the vertical rail 8; A head portion 24 connected to the vertical cursor 21, and a balance weight 1 movably disposed on the other side of the bottom wall 16 of the vertical rail 8.
8, which has a space located in the longitudinal extension direction of the vertical rail 8 with respect to the end face of the vertical rail 8, and a rope guide roller 26 is rotated in the space. A cover member 9 that can be freely placed inside is attached to the end of the vertical rail 8, and the cover member 9 is attached to the bottom wall 16.
a frame body having a contact portion that contacts an end portion of the frame body and rotatably supporting the rope guide roller 26 facing both one side and the other side of the bottom wall 16 behind the contact portion; 31 is stored and arranged, and the rope 20 connecting the balance weight 18 and the vertical cursor 21 is hung on the rope guide roller 26, and in conjunction with the movement of the vertical cursor 21 along the vertical rail 8,
A rope guide mechanism characterized in that the balance weight 18 is configured to move along the vertical rail 8 in the opposite direction.