JPH0535387U - Parallel ruler braking device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a parallel ruler braking device having a simple mechanism. [Structure] A vertical cursor 2 movably connected to an elongated hole 26 in a side wall 6a of a vertical rail 6 via guide rollers 24 and 26.
The second base plate 22a supports the shaft body 34 slidably and rotatably in the axial direction, and one brake plate 40 of the pair of brake plates 38 and 40 arranged on both sides of the side wall 6a of the vertical rail 6 is provided. It is rotatably connected to the tip of the shaft 34, and the screw hole of the other brake plate 38 is screwed into the screw portion of the shaft 34. The brakes 38 and 40 are engaged with pins 42 fixed to the base plate 22a to prevent the brake plates 38 and 40 from rotating, and the shaft 34 can be externally rotated from the side of the vertical cursor 22. A molding 50 is provided at one end of the shaft body 34.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a braking device for a parallel ruler.

[0002]

[Prior Art]

 In this type of parallel ruler braking device, a structure has been developed in which a link mechanism is provided on a vertical cursor, and brake pads provided on a link in the mechanism are pressed against both side walls of a vertical rail to apply a brake. In addition, a configuration is known in which a brake device is provided on a transmission shaft that links the movements of a pair of vertical cursors.

[0003]

[Problems to be solved by the device]

 The link brake system that uses a link as a brake mechanism has a complicated mechanism, and the structure in which a brake device is provided on the transmission shaft has a defect that the mechanism is complicated. An object of the present invention is to provide a parallel ruler braking device having a simple structure and capable of obtaining a strong braking force.

[0004]

[Means for solving problems]

 In order to achieve the above-mentioned object, the present invention has a pair of hollow vertical rails 4 and 6 disposed on both sides of a drawing board, provided with a long hole 26 in a side wall 6a along the longitudinal direction thereof. The substrates 22a of the vertical cursors 22 and 32 are movably connected to the vertical rails 4 and 6 along the guide rollers 24 and 26 arranged in the holes 26, and are arranged between the vertical cursors 22 and 32. In a parallel ruler in which a horizontal ruler 48 is installed, at least one vertical cursor 22 of the pair of vertical cursors 22 and 32 is horizontal to the board 2a of the vertical cursor 22 with respect to the surface of the drawing board 2 with respect to the longitudinal direction of the vertical rail 6. Of the vertical rail 6 to which the one vertical cursor 22 is connected, the shaft 36 having the molding 50 fixed therein is slidably fitted in the hole 36. Brake plates 38 and 40 on both sides of the side wall 6a The brake plate 40 is arranged so as not to rotate with respect to the base plate 22a, one of the brake plates 38 and 40 is rotatably connected to the tip of the shaft 34, and the other brake plate 38 is provided with a screw hole. The threaded hole is screwed into the threaded portion of the shaft body 34.

[0005]

[Action]

 When the molding 50 is rotated in one direction to rotate the shaft body 34, the brake plate 38 screwed into the threaded portion of the shaft body 34 is guided by the threaded portion and approaches the opposed brake plate 40 in a direction approaching the brake plate 40. Moving along 34, the pair of brakes 38, 40 are crimped to both sides of the side wall 6a of the vertical rail 6, and the vertical cursor 22 is fixed to the vertical rail 6. When the molding 50 is rotated in the opposite direction, the clamping pressure of the brake plates 38, 40 on the side wall 6a of the vertical rail 6 is released, and the vertical cursor 22 becomes freely movable with respect to the vertical rail 6.

[0006]

【Example】

 Hereinafter, the configuration of the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings. In FIG. 2, reference numeral 2 is a drawing board, which is supported by a support. Hollow vertical rails 4 and 6 are fixed to both sides of the drawing board 2. Belt pulleys 8, 10, 12, 14, 16, 18 are rotatably supported on the vertical rails 4, 6 as shown in FIG. 3, and a belt 20 is stretched around these pulleys. Reference numeral 22 denotes a vertical cursor. As shown in FIG. 1, a pair of grooved guide rollers 24 and 26 are rotatably supported by a base plate 22a, and the elongated holes 26 formed in the outer wall 6a of the vertical rail 6 are mutually supported. The grooved guide rollers 24 and 26 are rotatably engaged with the upper and lower parallel edges.

The vertical cursor 6 is moved by the guide rollers 24, 26 and the rail guides 28, 30 fixed to the base plate 22 a that slidably contact the upper and lower wall surfaces of the vertical rail 6. It is connected so as to be movable along. Reference numeral 32 denotes a vertical cursor, which has the same structure as the vertical cursor 22 and is movably connected to the vertical rail 4. The vertical cursors 22 and 32 are interlocked with each other so as to move along the vertical rails 4 and 6 via the belt fixing portion 32 (the belt fixing portion of the vertical cursor 32 is not shown) on the belt 20. It is connected.

In FIG. 1, reference numeral 34 denotes a shaft body slidably fitted in a hole 36 abutted on the base plate 32 a, and a screw hole of the shaft body is screwed into a screw hole at a central portion of a brake plate 38. . The brake plate 40 is rotatably connected to the tip of the shaft body 34. The brake plates 38, 40 are arranged on both sides of the outer wall 6a of the vertical rail 6, and the recesses formed therein are slidably fitted to the rotation stop pin 42 fixedly mounted on the base plate 22a. The brake plate 38 is guided by the screw portion of the shaft body 34 and moves in a direction away from the brake plate 40 by rotation of the shaft body 34 in one direction.

Further, the brake plate 38 is configured to move in a direction approaching the brake plate 40 by being guided by a screw portion of the shaft body 34 by the rotation of the shaft body 34 in the other direction. A molding 50 protruding from the side surface of the vertical cursor 22 is fixed to one end of the shaft body 34 so that the shaft body 34 can be operated externally. Rubber 44, 46 for braking is fixed to the surfaces of the brake plates 38, 40 facing the outer wall 6a of the vertical rail 6. Reference numeral 48 is a horizontal ruler, both ends of which are connected to the vertical cursors 22 and 32.

Instead of the rubbers 44 and 46, a resin sheet 54 may be fixed to the break plates 38 and 40 as shown in FIG. When the rubber plates 44 and 46 with holes are attached to the brake plates 38 and 40 with holes for inserting the shaft 34, the positions where the brake plates 38 and 40 and the rubbers 44 and 46 are attached. If they are misaligned, the holes may be misaligned as shown in FIG. 7, and the shaft body 34 may not fit into the holes of the brake plates 38, 40 and the rubbers 44, 46.

In order to solve this problem, the rubber 56 may be formed in a square frame shape as shown in FIG. 8 (A), or as shown in FIG. 8 (B). The rubber 58 may be attached to both sides of the holes of the brake plates 38 and 40. Further, as shown in FIG. 8C, a pair of U-shaped rubbers 60 may be fixed to the edges of the brake plates 38 and 40, or as shown in FIG. The pair of rubbers 62, may be fixed to the edges of the brake plates 38, 40. With this configuration, it becomes easy to attach the rubber during assembly.

Next, the operation of this embodiment will be described. With the brake plates 38, 40 pressed against the vertical rail 6, that is, in the released state, the horizontal ruler 48 is pressed along the drawing plate 2 in the front-rear direction of the drawing plate 2 by a manual operation force. The left and right vertical cursors 32, 22 move in parallel with each other along the rails 4, 6 to move the horizontal ruler 48 in parallel to a desired position on the drawing board 2. When the mall 50 is rotated in the braking direction, the brake plates 38 and 40 press the both surfaces of the outer side wall 6a of the vertical rail 6, and the vertical cursor 22 is fixed to the vertical rail 6. This fixing can be released by rotating the molding 50 in the brake releasing direction.

[0013]

【effect】

 According to the present invention, since the side walls of the vertical rail are pressed by the pair of brake plates as described above, the brake structure can be simplified. Further, it is not necessary to dispose the vertical cursor inside the vertical rail, and the space space inside the vertical rail can be reduced, and the width of the vertical rail can be reduced.

[Brief description of drawings]

FIG. 1 is an external view of a main part.

FIG. 2 is an overall external view of a parallel ruler.

FIG. 3 is an explanatory diagram of a vertical cursor interlocking mechanism.

FIG. 4 is a horizontal sectional view of a vertical cursor.

FIG. 5 is a vertical cross-sectional view of a vertical rail and a vertical cursor.

FIG. 6 is a side view of another embodiment.

FIG. 7 is an explanatory diagram.

FIG. 8 is an external view of another embodiment.

[Explanation of symbols]

 2 Drawing board 4 Vertical rail 6 Vertical rail 8 Pulley 10 Pulley 12 Pulley 14 Pulley 16 Pulley 18 Pulley 20 Belt 22 Vertical cursor 24 Guide roller 26 Long hole 28 Rail guide 30 Rail guide 32 Belt fixing part 34 Shaft body 36 Hole 38 Brake plate 40 brake plate 42 pin 44 rubber 46 rubber 48 horizontal ruler 50 molding 54 resin sheet 56 rubber 58 rubber 60 rubber 62 rubber

Claims (1)

[Scope of utility model registration request] 1. An elongated hole 26 is provided in a side wall 6a of a pair of hollow vertical rails 4 and 6 arranged on both sides of the drawing board along the longitudinal direction thereof, and the elongated hole 26 is arranged in the elongated hole 26. Guide roller 2
The substrates 22a of the vertical cursors 22 and 32 are movably connected to the vertical rails 4 and 6 along the vertical rails 4 and 6 through 4, 26,
In a parallel ruler in which a horizontal ruler 48 is installed between the vertical cursors 22 and 32, at least one of the pair of vertical cursors 22 and 32 has a vertical cursor 22 on a substrate 22a which is horizontal to the surface of the drawing board. A hole 36 is formed in the rail 6 in a direction perpendicular to the longitudinal direction of the rail 6, and the molding 5 is inserted into the hole 36.
A shaft body 34 in which 0 is fixed is slidably fitted in the axial direction, and brake plates 38 and 40 are provided on both sides of a side wall 6a of a vertical rail 6 to which the one vertical cursor 22 is connected.
The brake plate 3 is arranged so as not to rotate with respect to a.
One of the brake plates 8 and 40 is rotatably connected to the tip of the shaft body 34, the other brake plate 38 is provided with a screw hole, and the screw hole is screwed into the screw portion of the shaft body 34. Brake device characterized by.