JPH0530954Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a connecting device for a horizontal rail and a vertical rail of a rail-type flexible parallel ruler, line drawing machine, digitizer, etc.

Conventional technology As described in Japanese Utility Model Publication No. 11031/1981, a center support shaft is placed inside a groove step and a spring force is applied to the joint between the horizontal cursor and the vertical rail. There are known means for fixing in a one-touch manner using a hook-shaped fixing member, and means for fixing using a fixing member that abuts the center spindle using an operating screw.

Problems that the invention aims to solve In rail-type flexible parallel rulers, etc., the vertical rail and horizontal rail are disassembled and transported to the site of use, where they are fixed to a drawing board and assembled. In the work of connecting the cursor and the vertical rail, one of the joint bodies to be connected is integrally provided with a long vertical rail, and the other horizontal cursor is a member that can move freely along the horizontal rail. Fix the horizontal rail along the edge of the board so that it does not protrude into the drawing surface, then hold the long vertical rail on the drawing board and use the joint body at the end as a horizontal cursor that moves freely on the back side of the drawing board. This work is originally not easy because the groove step and the center support shaft must be carefully positioned and fixed so that they face each other at right angles. For this reason, various efforts have been made to date, but with the conventional one-touch type, positioning and fixing are performed simultaneously, and although it may seem easy at first glance, when it comes time to fix the position, If the fixing is not accurate, there is a problem that adjustment cannot be made after fixing.Furthermore, with the conventional method of fixing using a fixing member that abuts the center spindle with an operating screw, fixing takes time and it is difficult to hold the vertical rail until it is completed. I have a problem that I have to deal with.

Means to Solve the Problems Therefore, the present invention consists of a horizontal cursor that is movable along a horizontal rail fixed to a drawing board, and one end of a vertical rail located on the drawing surface in a direction perpendicular to the horizontal rail. In the rail connecting portion between the rail connecting portion and the joint body to be connected to the horizontal cursor, one of the connecting portions is provided with a center support shaft parallel to the horizontal rail, and the other connecting portion is provided with the center support shaft. A groove into which the shaft fits is provided, and a spring elastic member for holding the center spindle is provided on the side of the groove, the holding opening is narrower than the diameter of the center spindle and the spring elastic member is wider in depth. Provided is a rail connection device for a universal parallel ruler, etc., which is provided with a fixing member that is located closer to the clamping opening than the center axis of the support shaft and comes into contact with the outer surface of the spring elastic member to fix the center support shaft to the groove step. This is what I am trying to do.

Effect For example, if the center support shaft provided on the horizontal cursor is opposed to the groove part of the joint body and fitted,
First, the clamping opening of the spring elastic member provided on the side of the groove step comes into contact with the center support shaft, expands the clamping opening against the spring elasticity, and is pushed in, and the center support shaft is pushed inside the clamping opening of the spring elastic member. As the depth expands, the groove becomes in a temporarily fixed state in contact with the groove step. Therefore, the work up to temporary fixing can be done as easily and quickly as the conventional one-touch type, and then, after confirming the longitudinal positioning of the center spindle, the fixing member is brought into contact with the outer surface of the spring elastic member. Then, the center support shaft is fixed at a predetermined position in the groove step. To remove it, when you loosen the fixing member, the center support shaft is maintained in a temporarily fixed state by the spring elastic member, so you can easily remove it by holding the vertical rail and lifting it against the spring elasticity of the clamping opening. Removal is complete. Therefore, unlike the conventional one-touch type, the vertical rail does not come off as soon as it is released, and there is no risk of the vertical rail accidentally falling.

Embodiment The device of the present invention will be explained in detail with reference to the embodiment shown below. Reference numeral 1 denotes a horizontal rail, which is fixed along one edge of the drawing board 2 with a vise 3 or the like so that it does not protrude from the drawing surface. There is. Reference numeral 4 denotes a horizontal cursor that is movably guided along the longitudinal direction of the horizontal rail by a running roller or the like. The horizontal cursor 4 is integrally provided with an extending portion 4a to the rear of the horizontal rail 1, and a support base 5 is integrally fixed to the upper surface thereof with bolts, nuts, etc. 6. A center support shaft 7 is integrally provided on both sides of the support base 5 in a uniaxial shape parallel to the longitudinal direction of the horizontal rail 1. On the other hand, 8 is a vertical rail installed on the drawing board 2 perpendicular to the horizontal rail 1, and a joint body 9 is integrally fixed to one end of the vertical rail. A horizontally elongated joint case 10 is integrally provided on the lower side of the joint body 9 along the moving direction of the horizontal cursor 4, and a joint case 10 is provided on the inner side of both longitudinal sides thereof opposite to the center support shaft 7. A groove step 11 into which the support shaft 7 fits loosely is provided. Inside the groove step 11, a spring elastic member 13 for holding the center spindle is formed by bending a leaf spring or the like and has a holding opening 12 narrower than the diameter of the center spindle 7 and wider in depth than the groove step 11.
is provided. In the case of the embodiment, the spring elastic member 13
Although the lower end connected to the clamping opening 12 is expanded and both ends are fixed to the joint case 10 with fixing screws 14, there is no means for fixing the ceiling of the spring elastic member 13 to the ceiling of the joint case 10. is also possible. Further, on the side wall of the spring elastic member 13 of the joint case 10, the center spindle 7 is positioned closer to the clamping opening 12 than the center axis of the center spindle 7 and comes into contact with the outer surface of the spring elastic member 13. A fixing member 15 that is fixed to the groove step portion 11 is provided. In the case of the embodiment, the fixing member 15 consists of a screw shaft having an operating knob 16 outside the joint case 10, and is screwed into a screw hole drilled in the joint case 10, and its tip is attached to the spring elastic member 1.
It is configured so as to come into contact with the side wall of No. 5. 17 is the retaining piece.

In the configuration of the above embodiment, when the center support shaft 7 of the horizontal cursor 4 is opposed to the groove step 11 of the joint case 10 and fitted, first, the groove step 1
The holding opening 1 of the spring elastic member 13 provided on the side of 1
When the second part comes into contact with the center support shaft 7, expands the holding opening 12 against the spring elasticity, and pushes in, the center support shaft 7 expands the inner depth of the holding opening 12 of the spring elastic member 13 as shown in the first figure. In the groove step part 1
1 and is in a temporarily fixed state. Therefore, the work up to temporary fixing can be done as easily and quickly as the conventional one-touch type, and the left and right center support shafts 7 can be temporarily fixed either simultaneously or sequentially.
When the fixing member 15 is brought into contact with the outer surface of the spring elastic member 13 after confirming the longitudinal positioning of the center support shaft 7, the center support shaft 7 is fixed at a predetermined corner position of the groove step 11. Therefore, if the groove part 11 is machined with high precision even at the corner pressed against the fixed member 15 via this spring elastic member 13,
It can be accurately attached to the center support shaft 7.
To remove it, loosen the fixing member 15. Since the center support shaft 7 is maintained in a temporarily fixed state by the spring elastic member 13, then hold the vertical rail 9 and resist the spring elasticity of the clamping opening 12. Once you lift it up, you can easily remove it. Therefore, unlike the conventional one-touch type, it does not come off immediately after releasing the fixation, and there is no risk of the vertical rail being accidentally dropped.

Incidentally, as is clear from the description of the embodiment above, contrary to the embodiment, the center support shaft may be provided on the joint case body side, and the groove part, the spring elastic member, and the fixing member may be provided on the horizontal cursor side. , the device of the present invention is constructed in the same way.

Effects As described above, according to the device of the present invention, a horizontal cursor provided movably along a horizontal rail fixed to a drawing board and one end of a vertical rail located on the drawing surface in a direction perpendicular to the horizontal rail. In the rail connecting portion between the joint body and the joint body to be connected to the horizontal cursor, one connecting portion is provided with a center support shaft parallel to the horizontal rail, while the other connecting portion is provided with a center support shaft parallel to the horizontal rail. A groove step into which the center support shaft is fitted is provided, and a spring elastic member for holding the center support shaft is provided on the side of the groove step, the holding opening is narrower than the diameter of the center support shaft and the spring elastic member is wider in depth. Since the structure includes a fixing member that is located closer to the opening than the center axis of the spring and comes into contact with the outer surface of the spring elastic member to fix the center spindle to the groove step, for example,
When the center support shaft provided on the horizontal cursor is opposed to the groove step of the joint body and fitted, the holding opening is expanded against the spring elasticity of the spring elastic member provided on the side of the groove step and pushed in. The center support shaft can be temporarily fixed in contact with the groove step within the widening inner depth of the clamping opening of the spring elastic member, and therefore the work up to temporary fixing can be done using the conventional one-touch method. It can be done just as easily and quickly, and then
If the fixing member is brought into contact with the outer surface of the spring elastic member after confirming the longitudinal positioning of the center spindle, the center spindle will be fixed at a predetermined position in the groove. When loosened, the center support shaft is maintained in a temporarily fixed state by the spring elastic member, so if you then hold the vertical rail and lift it against the spring elasticity of the clamping opening, you can easily complete the removal and remove the center support shaft. Therefore, unlike the conventional one-touch type, it does not come off immediately when the fixation is released, and it has the effect of preventing accidents such as accidentally dropping the vertical rail, which has many practical benefits. It is.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the device of the present invention, and F of FIG.
FIG. 2 is a side view showing the main part taken along the line -F', and FIG. 2 is a front view showing the main part taken along the line A-A' in FIG. 1...Horizontal rail, 2...Drawing board, 4...Horizontal cursor, 7...Center support shaft, 8...Vertical rail, 9...
... joint body, 11 ... groove step portion, 12 ... clamping opening, 13 ... spring elastic member, 15 ... fixing member.

Claims (1)

[Scope of utility model claims] A horizontal cursor that is movable along a horizontal rail fixed to the drawing board, and a joint body that supports one end of the vertical rail located on the drawing board in a direction perpendicular to the horizontal rail and is connected to the horizontal cursor. In the rail connecting portion between the rails, one of the connecting portions is provided with a center support shaft parallel to the horizontal rail, while the other connecting portion is provided with a groove stepped portion into which the center support shaft fits, and the groove A spring elastic member for holding the center spindle is provided on the side of the stepped portion, and the spring elastic member has a holding opening narrower than the diameter of the center spindle and has a wider depth, and is located closer to the opening than the center axis of the center spindle. A rail connection device for a universal parallel ruler, etc., which is provided with a fixing member that fixes a center support shaft to a groove step by coming into contact with the outer surface of an elastic member.