JPS625696Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a screw tightening device that fixes or releases fixing by rotating a screw member with a knob, which enables the knob to be fixed at an appropriate angle with respect to the screw member. , an axial locking groove having a convex arc curve in a circular direction centered on the axis is provided on the outer circumferential surface of a screw member provided with an outer circumferential thread for screwing the knob; An inner circumferential screw that is screwed into the outer circumferential screw and a screw hole for a fixing screw formed through the outer circumferential screw at an almost right angle from the outside to the inner circumferential screw are formed, and the screw hole for the fixing screw of the knob is formed in the circle of the locking groove. It is characterized in that it can be fixed arbitrarily within a range of directions, and the tip of the fixing screw screwed into the screw hole can be pressed into contact with an arbitrary part of the convex arc-shaped groove bottom of the locking groove, and in particular, If the knob is a regular polygon, or if the knob has a regular polygon pattern, the final tightening rotation angle will not make the knob look unsightly because the regular polygon pattern will not be symmetrical on the left and right sides of the midline. The purpose is to enable correction.

An embodiment of the present invention will be described with reference to FIGS.

In the figure, 1 is a main pipe with a square cross section, 2 is a child pipe with a square cross section inserted freely from the upper end of the main pipe 1, and 3 is a sliding guide made of synthetic resin fixed to the inner periphery of the upper end of the main pipe 1. , the child pipe 2 slides with its outer periphery in contact with the guide 3. Reference numeral 4 denotes a guide box whose lower edge is fitted and fixed to the upper end of the main pipe 1 to substantially constitute a part of the main pipe 1, and a window hole 5 is provided on one side of the guide box. Reference numeral 6 denotes a rectangular tightening frame piece that is movable relative to the child pipe 2 inside the guide box 4 and is fitted almost tightly, and a threaded rod 7 is provided on one side of the frame piece to protrude from the window hole 5 to the outside. A box-shaped fixing piece 8 is fitted onto the outer periphery of the threaded rod 7 through the window hole 5 and presses the upper and lower pressing pieces 9 to the outer periphery of the child pipe 2, slightly loosely.

Reference numeral 11 denotes a screw member of the present invention in which a central screw hole 12 is screwed into the screw rod 7, and its inner surface is opposed to the outer surface of the fixing piece 8, and the screw rod 7 of the screw member 11 is
At the top, the fixing piece 8 is pressurized at a suitable time by screwing, and at the same time the tightening frame piece 6 is attracted, thereby making it possible to fix the child pipe 2 so that it cannot move up and down. 10
is a snap ring fitted onto the threaded rod 7 to prevent the threaded member 11 from coming off.

An outer circumferential screw 13 for screwing the knob 16 is provided on the outer circumferential surface of the screw member 11, and a locking groove 14 whose bottom wall is a convex arc curve 15 in a circular direction centered on the axis is provided on the outer circumferential surface, The outer peripheral screw 13 is notched at that portion. The knob 16 has a screw rod 7 and a screw member 1.
A central blind hole 17 is formed to cover the inside of the central blind hole 17, and an inner circumferential screw 18 is provided on the hole wall of the central blind hole 17 to be screwed into the outer circumferential screw 13. A screw hole 19 for the fixing screw is formed.

For example, the knob 16 is made into a square polygon, and when the outer peripheral surface is circular, a polygonal pattern 2 as shown in FIGS. 3 and 4 is formed on the outer front surface of the knob 16.
Show 1.

In the embodiment described above, the screw member 11 is screwed onto the threaded rod 7, and the snap ring 10 is fitted, so that the inner peripheral screw 18 of the knob 16 is screwed onto the screw member 11, and the screw hole 19 for the fixing screw is screwed. Screw in the fixing screw 20 from above to temporarily fix it against any part of the convex arc curve 15 that is the bottom of the locking groove 14, rotate the screw member 11 with the knob 16, and press the fixing piece 8. The child pipe 2 is fixed by the opposing force between the piece 9 and the tightening frame piece 6, and the knob 16 is held at its tightening limit.
If the pattern 21 is not symmetrical on the left and right sides of the midline, loosen the fixing screw 20 and tighten only the knob 16 until the fixing screw screw hole 19 is within the locking groove 14 and the knob or the pattern. 21 are corrected so that they are symmetrical on the left and right sides of the midline, and then the fixing screws 20 are advanced again to perform final fixation.

The present invention has a first square pipe 31 as shown in FIG.
A threaded rod 33 protrudes from the end face of the second square pipe 3.
2, a threaded rod 33 is passed through the through-hole 34 on the side, a threaded member 35 similar to that shown in FIG. A knob mounting angle adjustment device that fixes the knob at an arbitrary angle with a fixing screw, or fixes it by fitting a nut 43 into the end face of the first square pipe 41 as shown in FIG. A through hole 44 is provided to be screwed into the nut 43 through a threaded rod 45 formed with a large threaded member 45, and the threaded member 45 has the same shape as the threaded member 35 in FIG.
It can also be applied to a device for adjusting the mounting angle of a knob for screwing and fixing as shown in item 6.

As clarified from the above description, the present invention provides a locking groove whose bottom surface is a convex arc curve in a circular direction on the outer periphery of a screw member, and a knob that is fixed by the pressing action of a fixing screw on the outer periphery of the screw member. , which can be fixed by adjusting within the circular direction of the locking groove, and as mentioned above, when the knob or the pattern appearing on the knob is of a special shape, there is an unsightly inclination at the extreme point of tightening. In addition, indicators are provided on the fixed part, and the knobs are
It can be used when setting an indication mark that matches the index at the extreme point of tightening.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the present invention, with FIG. 1 being an exploded perspective view and FIG. 2 being a side view taken in longitudinal section of the main parts. 3 and 4 are front views showing several examples of the pattern 21 appearing on the knob, and FIGS. 5 and 6 are separated perspective views showing other embodiments. 11... Threaded member, 12... Screw hole, 13... Outer circumference screw, 14... Locking groove, 15... Convex arc curve,
16... Knob, 18... Inner peripheral screw, 19... Screw hole for fixing screw, 20... Fixing screw, 21... Pattern, 31, 41... First square pipe, 32, 42...
...Second square pipe, 33...Threaded rod, 34...Threaded hole, 35, 45...Threaded member, 36, 46...Knob, 43...Nut, 44...Through hole.

Claims (1)

[Scope of utility model registration request] An axial locking groove having a convex arc curve in a circular direction centered on the axis is provided on the outer circumferential surface of a screw member provided with an outer circumferential thread into which the knob is screwed, and the outer circumference of the center portion of the knob is An inner circumferential thread that is screwed into the screw, and a fixing screw screw hole provided from the outside at a nearly right angle to the inner circumferential screw are formed, and the fixing screw screw hole of the knob is inserted in the circular direction of the locking groove. The knob is characterized in that the tip of the fixing screw screwed into the screw hole can be pressed into any arbitrary part of the convex arc-shaped groove bottom of the locking groove and fixed. Installation angle adjustment device.