JPH0230317Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a vertical cursor self-propulsion prevention device for a rail-type flexible parallel ruler or coordinate analyzer, etc., which has a balance weight on the vertical rail, and when the head is not connected to the vertical cursor, Even if the fixation of the balance weight is released by mistake, the vertical cursor is prevented from moving suddenly along the vertical rail in conjunction with the balance weight.

In various types of devices, a balance weight has its weight balanced with the total weight of the head and vertical cursor. Therefore, if the head is not connected to the vertical cursor and the balance is lost and the vertical rail is tilted, the balance weight and the vertical cursor connected to it will move by themselves along the vertical rail. state. Therefore, when assembling,
Generally, the balance weight is fixed to the vertical rail, but if you accidentally release the fixation, the balance weight will move inside the vertical rail due to its own weight due to the slope of the vertical rail. There is a danger that the vertical cursor that is linked to the balance weight will move rapidly and hit the hand of the assembly worker, and the balance weight may collide with the end of the vertical rail. , there was a risk that the balance weight would be destroyed. The object of the present invention is to provide a rail type universal parallel ruler device that eliminates the above-mentioned defects.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described in detail below with reference to embodiments shown in the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a drawing board, which is fixed to a drawing board holder on a support stand (not shown). The support base has an angle adjustment device, and by operating the device, the drawing board 1 can be set at a desired angle between a horizontal position and a vertical position. 2
is a horizontal rail fixed to the side of the drawing board 1, to which a horizontal cursor 3 is slidably attached, and one end of a vertical rail 4 is connected to the horizontal cursor 3. The other end of the vertical rail 4 is a tail roller 5
It is placed on the drawing board 1 via. 6 is
The balance weight 8, which is movably disposed in the weight insertion space formed along the longitudinal direction of the vertical rail 4, is a vertical cursor that is slidably attached to the vertical rail 4 via rollers, The cursor 8 attaches a wire rope 10 to the balance weight 6 in order to interlock with the balance weight 6.
are connected via. The wire rope 10
are hung on pulleys 11 and 12 rotatably arranged at both ends of the vertical rail 4. The cursor 8 and the balance weight 6 move in opposite directions along the vertical rail 4. 14
Fixing members 33 and 34 each having a concave curved surface on one side are screws.
The brake body 14 is in pressure contact with the side surface of the vertical rail 4 using the fixing members 33 and 34 as fulcrums. It retains its sexuality. Rising part 8 of the vertical cursor 8
A mounting groove 8d is formed in c. 24,2
Reference numeral 5 designates a screw hole drilled in the rising portion 8c, which opens at the upper surface of the rising portion 8c and communicates with the groove 8d. Reference numeral 28 denotes a support plate, from which a tongue piece 28a is protruded, and a tapered hole corresponding to the screw holes 24, 25 is formed in the tongue piece 28a. Fixing members 33 and 34 are screwed into the screw holes 24 and 25, and portions of the fixing members 33 and 34 protruding from the upper surface of the rising portion 8c engage with the brake body 14. A support substrate of a head 36 is connected to the support plate 28 via a double hinge mechanism 34. 38 is a ruler mounting plate of the head 36, to which straight rulers 40, 42 are removably fixed. In the case of a coordinate analyzer, a coordinate reading head is connected to the support plate 28. The groove 8d, the screw holes 24, 26, and the support plate 28
The tapered holes 30 and 32 constitute a fixing mechanism for detachably fixing the support plate 28 to a predetermined position of the vertical cursor 8. The head 36, straightedge 4
0,42, double hinge mechanism 34, support plate 28,
The total weight of the vertical cursor 8 and the weight of the balance weight 6 are set to be the same.

Next, the operation of this embodiment will be explained.

When packing a rail type flexible parallel ruler, it is necessary to pack a horizontal rail 2 with a horizontal cursor 3 and a vertical rail 4 with a balance weight 6 and a vertical cursor 8.
, a support plate 28, a head 36 having a double hinge mechanism 34, and straightedges 40 and 42, respectively. The balance weight 6 is attached to the vertical rail 4 by screws (not shown) to prevent it from moving during transportation.
Fixed to. In the disassembled state, the vertical cursor 8 is fixed to the vertical rail 4 by the pressure of the brake body 14 against the side surface of the vertical rail 4.
When assembling the rail-type flexible parallel ruler, to connect the head 36 to the vertical cursor 8, the tongue piece 28a of the support plate 28 is inserted into the groove 8d of the rising portion of the vertical cursor 8. Next, fixing members 33 and 34 consisting of pivot screws are inserted into screw holes 24 and 34, respectively.
25 in the entry direction, and the fixing member 3
3 and 34 are press-fitted into the tapered hole of the tongue piece 28a of the support plate 28, and the support plate 28 is fixed to the vertical cursor 8. When the fixing members 33, 34 are rotated in the advancing direction and lowered until the tips of the fixing members 33, 34 are pressed against the upper surface around the tapered hole of the tongue piece 28a, the upper ends of the fixing members 33, 34 are brought into contact with the upper surface of the rising portion 8c. The brake body 14 is disengaged from the fixing members 33 and 34, and the press contact state of the brake body 14 with respect to the vertical rail 4 is released.

As mentioned above, the present invention is configured so that the braking force that fixes the vertical cursor to the vertical rail cannot be released unless the head is attached to the vertical cursor. Even if the fixation is released, there is no sudden movement of the vertical cursor due to the weight of the balance weight, which is extremely safe.

[Brief explanation of the drawing]

The drawings show a preferred embodiment of the present invention; FIG. 1 is a schematic plan view of the entire device, FIG. 2 is a plan view, and FIG. 3 is a front view. 2... Horizontal rail, 3... Horizontal cursor, 4... Vertical rail, 6... Balance weight, 8... Vertical cursor, 14... Brake body, 28... Support plate, 2
8a... Tongue piece.

Claims (1)

[Scope of utility model registration request] A vertical rail 4 movably connected to the horizontal rail 2 at right angles to the horizontal rail 2; a vertical cursor 8 attached to the vertical rail 4 so as to be movable along the vertical rail 2; and movement of the vertical cursor 8. In a device comprising a balance weight 6 connected to the vertical cursor 8 by a rope or the like and movably disposed on the vertical rail 4 so as to move in the opposite direction to the vertical direction, the head 36 The cursor 8 is displaceably supported in holes 24 and 25 formed in the cursor 8, and the head 3 is moved by displacement with respect to the holes 24 and 25.
Fixing members 33 and 34 are provided for removably fixing the support plate 28 connected to the vertical cursor 8 to the vertical cursor 8, and the brake body 1 is attached to the vertical cursor 8.
4, the fixing members 33, 34 and the brake body 14 are engaged, and the fixing members 33, 34
The brake body 14 is brought into elastic contact with the vertical rail 4 using the engagement point with the fixing members 33, 34 as a fulcrum.
The fixing members 33, 3 are displaced along the holes 24, 25 in the direction of fixing the support plate 28
4 and the brake body 14 are disengaged from each other.