JPH0349298Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a flange joint for shafts, pipes, etc.

[Conventional technology]

Conventional flange joints were constructed by completely removing the tightening screws and disassembling them.

[The problem that the idea attempts to solve]

The flange joint described in the above-mentioned prior art has the inconvenience of requiring too much time and effort to disassemble and assemble.

The object of the present invention is to provide a new flange joint that can be disassembled and assembled with the screws partially returned.

[Means to solve the problem]

In order to achieve the above purpose, the flange joint of the present invention has two or more female threads provided on one flange, a male thread screwed into the female thread, and an outer diameter thread provided at the outer end of the male thread. A retaining flange whose diameter is larger than the diameter of the female screw, a pillar installed at the inner end of the male screw, and a twisting head such as a hexagonal head, a square head, or a butterfly-shaped head provided at the tip of the pillar. , a fitting flange provided at the base of the head, a through hole provided at a portion of the other flange opposite to the female screw, the diameter of which is larger than the thickness of the column and smaller than the outer diameter of the fitting flange; The fitting recess of the fitting flange provided at the outer edge of the hole and the other flange provided at the incisal edges of the through hole and the fitting recess are long and long along a circular line centered on the center point of the other flange. The pillar part includes a guide groove whose width is wider than the thickness of the column part and narrower than the outer diameter of the fitting flange, and a passage hole for the fitting flange and twisting head connected to the inner end of the guide groove. exists in the through hole, both flanges are fastened when the fitting collar is fitted into the fitting recess and the male thread is tightened.

〔Example〕

In the embodiment shown in the figure, a flange 6 is integrally provided at the tip of a drive shaft 5 that is connected to a rotating shaft 2 of a motor 1 by a key 3 and a tightening screw 4.
Two female screws 7, 7' are provided in the holder, and male screws 8, 8' are screwed into the female screws 7, 7'. A retaining collar 9 having a diameter larger than the diameter of the thread 7' is provided with a pillar part 10 at the inner end thereof, a hexagonal head 11 is provided at the tip of the pillar part 10, and an outer diameter is smaller than the diameter of the female thread at the base of the hexagonal head 11. Fitting flanges 12 are formed integrally with each other, and a flange 16 is integrally provided at the base end of a driven shaft 15 to which a pump vane 14 is fixed to the tip, and the flange 16 faces the female screws 7 and 7'. A through hole 17 with a diameter larger than the thickness of the column 10 and smaller than the outer diameter of the fitting flange 12 is provided at a location, and a fitting recess 18 of the fitting flange 12 is provided at the outer edge of the through hole 17. A guide groove 19 that is long and has a width wider than the thickness of the column part 10 and narrower than the outer diameter of the fitting collar 12 is formed on the incisal edge of the equal passage hole 17 and the fitting recess 18 along a circular line centered on the center point of the flange 16. A fitting collar 12 and a passage hole 20 for the hexagonal head 11 are continuously drilled at the inner end of this guide groove 19, and when the column part 10 exists in the through hole 17, Both flanges 6 and 16 are fastened together when the collar 12 is fitted into the fitting recess 18 and the male screws 8 and 8' are tightened.

[Effect]

When disassembling the above, first
8' is loosened while the retaining collar 9 remains engaged with the incisal edges of the female screws 7, 7', so that the fitting collar 12 comes out of the fitting recess 18, and then the driven shaft 15 is rotated to tighten the column. 10 in the passage hole 20, and then pull the driven shaft 15 to remove the fitting collar 12 and hexagonal head 11 through the passage hole 20. You can perform the operation in reverse.

[Effect of idea]

Since the present invention has the above-mentioned configuration, when performing the disassembly/assembly operations described in the above-mentioned operation, it is only necessary to remove half of the male screw; There is no need to pull out the screws, which reduces the time and effort by half, and since the fitting flange is fitted into the fitting recess when it is in a jointed state, there is no chance of the screw loosening unexpectedly. However, there is no risk that the column will move in the guide groove until the fit is completely resolved, and furthermore, in the present invention, there is no risk that the male screw will loosen and fly off during rotation. It is extremely safe as it avoids this.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the flange joint of the present invention without the pump case, Fig. 2 is a partially cutaway side view, Fig. 3 is an exploded perspective view, and Fig. 4. is also a partially cutaway side view. 1...Motor, 2...Rotating shaft, 3...Key, 4
...Tightening screw, 5...Drive shaft, 6...Flange,
7, 7'... Female thread, 8, 8'... Male thread, 9...
Removal prevention flange, 10... Column part, 11... Hexagonal head, 12
...Fitting flange, 14...Pump vane, 15...
Driven shaft, 16...Flange, 17...Through hole, 18
... Fitting recess, 19 ... Guide groove, 20 ... Passing hole, 21 ... Belleville spring washer, 22 ... Center alignment protrusion, 23 ... Center alignment recess.

Claims (1)

[Scope of utility model registration request] Two or more female threads provided on one flange, a male thread screwed into the female thread, a retaining collar provided at the outer end of the male thread with an outer diameter larger than the diameter of the female thread, and a male thread. A pillar part erected at the inner end of the screw, a twisting head such as a hexagonal head, a square head, or a butterfly-shaped head provided at the tip of the pillar part, and a fitting collar provided at the base of the head. , a through hole provided at a portion of the other flange facing the female thread, the diameter of which is larger than the thickness of the column portion and smaller than the outer diameter of the fitting collar; and a through hole provided at the outer edge of the through hole for fitting. The outside of the fitting flange is long and wider than the thickness of the pillar part along a circular line centered on the center point of the other flange, which is provided at the fitting recess of the flange and the incisal edge of the through hole and the fitting recess. It is equipped with a guide groove narrower than the diameter, and a hole for passing the fitting collar and twisting head connected to the inner end of the guide groove, and is used for fitting when the column exists in the through hole. A flange joint characterized in that both flanges are fastened when the collar is fitted into the fitting recess and the male screw is tightened.