JPH0436301Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention is designed to easily adjust the tension of the actuating wire when moving the actuating part of a drawing device, etc. along a guide rail, etc. This invention relates to a wire tension adjustment device.

<Prior Art> As this type of device, devices configured as shown in FIGS. 3 and 4, for example, are conventionally known.

That is, in the case shown in FIG. 3, the end 1A of the wire 1 is engaged with a pin 4 protruding in the outer diameter direction of a support 3 that is set up from a base plate 2, and is wound around the support 3. Stepped pin 5 inserted into 3
It is configured to be tightened and fixed.

In addition, in the case shown in FIG. 4, a wire 1 is sandwiched between a slot 6 carved from the upper end of a support shaft 3 set on a base plate 2, and an engaging protrusion 7 formed at the end of the wire 1 is inserted into the slot 6. It is configured to be fixed by locking the wire 1 around the split 6, and screwing and tightening a nut 9 to the male screw part 8 provided at the lower end of the support shaft 1 from the opposite side of the board 2. .

<Problems to be solved by the present invention> The conventional devices shown in Figs. 3 and 4 above are fixed on the same axis around which the wire is wound, so the tension of the wire is The problem was that it became loose.

<Means for solving the problem> A concave hole is opened from the upper end in which a caulking part fixedly arranged at the end of the wire can be engaged and accommodated, and
It consists of a support shaft with a diametrical slit carved into the circumferential wall of the hole, and a substrate block provided with a support shaft fitting hole into which the lower end of the support shaft can be rotatably fitted. The slot has a width that allows the wire to be inserted through it, and a depth that allows the tip of a tool such as a screwdriver to be inserted, and the board block is provided with a fixing screw that abuts against the lower end of the support shaft from the outer diameter direction and is tightened and fixed. It was formed like this.

Then, to fix the above-mentioned spindle, tighten the fixing screw from the outer diameter direction of the spindle, and
This is done by inserting and engaging the tip of a tool such as a screwdriver into this slot.

<Function> When adjusting the wire tension, the present invention
The tightening force of the fixing screw is applied in a direction that intersects the rotating direction of the spindle around which the end of the wire is wound, resulting in two directions: the direction in which the force is applied as a reaction to the winding of the wire, and the direction in which the force is applied to tighten the fixing screw. Since the wires are in the intersecting direction, there is no problem such as loosening of the wire around the support shaft or excessively wrapping the wire around the support shaft.

<Example> Next, an example of the present invention will be described with reference to FIGS. 1 and 2.

The support shaft 10 of the present invention has a flange portion 11 bulging in the outer diameter direction of the upper end surface 10A formed in a columnar body to prevent the wire from coming off. In addition, the above-mentioned support shaft 1
A concave hole 12 is formed from the upper end surface 10A of the hole 12 to the middle part thereof, and a slit 13 in the diametrical direction is carved in the peripheral wall of this hole 12 portion. In addition,
The width of the slot 13 is wide enough to insert the wire 14, and the depth is deep enough to insert the tip of a tool such as a screwdriver, and the diameter and depth of the recessed hole 12 are such that a caulking portion 15, which will be described later, is fitted. It is formed to a suitable size.

Next, the substrate block 16 on which the support shaft 10 is supported is provided with a support shaft fitting hole 17 into which the lower end 10B of the support shaft 10 is inserted and fitted.
A fixing screw hole 19, into which a fixing screw 18 which can be adjusted from the side wall surface 16A of the block 16 is screwed, faces in the outer diameter direction of this hole 17.

Incidentally, an engagement caulking portion 15 such as a small spherical metal block is integrally fixed to the end portion 14A of the wire 14.

Therefore, when attempting to fix the end of the wire 14 using the above mechanism, first, the lower end 10B of the support shaft 10 is fitted into the support shaft fitting hole 17, and the support shaft 10 is placed in a freely rotatable state. Place it in . That is, the fixing screw 18 is screwed back and left in a loosened state. Next, from this state, wire 1
The caulking portion 15 provided at the tip 14A of the support shaft 10 is fitted and locked into the concave hole 12 from the upper end surface 10A of the support shaft 10. At this time, the wire 10 is slit 1
3 so as to protrude in the outer radial direction of the support shaft 10.

Therefore, in order to adjust the tension of the wire 14,
The support shaft 10 is rotated to wrap the wire 14 around the support shaft 10 to a predetermined tension state, and the fixing screw 18 is screwed in to abut against the outer surface of the support shaft 10 and fixed. By this, the above-mentioned support shaft 1
A fixation of 0 is made.

Incidentally, when winding the wire 14 around the support shaft 10, this can be easily done by engaging a tool such as a screwdriver in the slot 13 of the support shaft 10 from the direction of the upper end surface 10A of the support shaft and rotating the wire 14. obtain.

<Effects> In the present invention having the above configuration, the support shaft that locks the end of the wire is not fixed on the same axis, so there is no possibility that the tension of the wire may become too loose or tightened too tightly during fixation. There's nothing to do.

Furthermore, since the engaging caulking portion provided at the end of the wire is housed within the support shaft, it is extremely advantageous in terms of space.

Furthermore, the slot in the spindle is deep enough to allow the tip of a tool such as a screwdriver to be inserted in the diametrical direction of the upper end surface of the spindle, so the spindle can be rotated relative to the board and the wire can be tensioned. The support shaft can be easily maintained relative to the substrate.

[Brief explanation of drawings]

Figure 1 is a plan view showing one embodiment of the present invention;
The figure is also a side view. FIG. 3 is a longitudinal sectional side view of a main part showing a conventional example, and FIG. 4 is a diagram showing another conventional example, where A is a plan view and B is a side view. 10... Support shaft, 14... Wire, 12... Concave hole, 15... Caulking part, 13... Slit, 1
8...Fixing screw.

Claims (1)

[Scope of Claim for Utility Model Registration] A concave hole is opened from the upper end to engage and accommodate the caulking part fixedly disposed at the end of the wire, and
It consists of a support shaft with a diametrical slit carved into the peripheral wall of the hole, and a substrate block provided with a support shaft fitting hole into which the lower end of the support shaft can be rotatably fitted, The slot has a width that allows the wire to be inserted through it, and a depth that allows the tip of a tool such as a screwdriver to be inserted, and the board block is provided with a fixing screw that abuts against the lower end of the support shaft from the outer diameter direction and is tightened and fixed. A wire tension adjustment mechanism characterized by being formed as follows.