JP3145697U - Axial joint - Google Patents

Abstract

A shaft joint can be easily separated regardless of the state of the shaft.
One end portion of a drive shaft is cut into a substantially semicircular shape, and a predetermined step is formed in the cut portion so as to form a stepped portion extending in a lateral direction from the shaft end portion to the lateral protruding portion. The widthwise lateral recess 4 is formed, one end of the driven shaft is cut into a semicircular shape, and the cutout is engaged with the lateral recess formed at the shaft end of the drive shaft. A protrusion having a predetermined width is formed on the shaft end, and a lateral recess having a predetermined width is formed on the shaft end to be fitted to the horizontal protrusion formed on the drive shaft. The slanted surface 10 is formed at a predetermined angle from the end of the concave streak in a direction opposite to the end of the shaft, and is formed continuously with the streak, and each of the drive shaft and the driven shaft described above. A shaft joint was constructed by fitting the concave and convex ridges together and superposing them.
[Selection] Figure 1

Description

  The present invention relates to a shaft joint, and more particularly to a shaft joint that can be easily released regardless of the stop position of the shaft.

As a conventional shaft joint of this type, as shown in FIG. 6, the lower end portion 22 having a substantially semicircular cross section of the drive shaft 21 and the upper end portion 24 having a substantially semicircular cross section of the driven shaft 23 are opposed to each other. The sleeve 27 is engaged with a pin 29 projecting from the drive shaft 21 in the longitudinal groove 28 on the outer circumference of the superposed concave and convex strips 25 and 26 on the inner surface. The thing inserted so that the superposition | polymerization edge parts 22 and 24 may be covered is disclosed (refer patent document 1).
Japanese Utility Model Publication No. 39-11404

In the above-mentioned Patent Document 1, lateral concavo-convex ridges 25 and 26 are formed on both inner surfaces of the lower end portion 22 of the drive shaft 21 and the upper end portion 24 of the driven shaft 23, and the concavo-convex ridges are fitted to each other to overlap. Since the drive shaft 21 and the driven shaft 23 are coupled and fitted on the outer periphery so as to cover the cannula 27, when the driven shaft 23 is removed from the drive shaft 21, the cannula 27 is moved to move both shafts 21. , 23 are separated from each other. At this time, since both the shafts are coupled by the ridges 25, 26 formed as described above, the overlapping surfaces of both the shafts are maintained in a horizontal state and the driven shaft 23 is If is not on the upper side, there is a problem that it is very difficult to separate the fitting state by the ridges and grooves.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a shaft joint that can easily separate both axes regardless of the positional relationship between the drive shaft and the driven shaft.

  According to the present invention, in order to achieve the above object, the shaft joint according to the present invention cuts one end portion of the shaft into a substantially semicircular shape with a required length, and cuts the cut portion from the end portion of the shaft in the lateral direction. A drive shaft in which a horizontal concave stripe portion having a predetermined width is formed so as to form a step connected to the projection portion and the convex stripe portion, and one end portion of the shaft is cut into a semicircular shape with a required length, and the drive A protrusion having a predetermined width that engages with a lateral recess formed at the shaft end of the shaft is formed at the shaft end, and a predetermined engagement with the lateral protrusion formed on the drive shaft. A widthwise concave groove portion is formed continuously with the convex stripe portion formed at the shaft end portion, and is inclined at a predetermined angle from the end portion of the concave stripe portion in a direction opposite to the shaft end portion. A driven shaft that constitutes a surface, the concave and convex portions of the drive shaft and the driven shaft are fitted and superposed, and a sleeve is inserted into the outer periphery of the superposed portion. In addition, the shaft end of the driven shaft is inclined outward at a required angle, and the axial width of the distal end surface of the lateral ridge of the driven shaft is formed in the drive shaft. It is characterized in that the width is configured to be smaller than the width of the concave groove in the horizontal direction.

  In the shaft joint according to the present invention, one end of the shaft is cut into a substantially semicircular shape with a required length, and the cut-out portion is continuously connected to the lateral ridge having a predetermined width from the shaft end and the ridge. Then, a drive shaft formed from a lateral recess having a predetermined width and one end of the shaft are cut into a semicircular shape having a required length and engaged with a lateral recess formed on the drive shaft. A protrusion having a predetermined width is formed on the shaft end, and a horizontal recess having a predetermined width is formed on the shaft end to be engaged with the horizontal protrusion formed on the drive shaft. And a driven shaft that forms an inclined surface at a predetermined angle from the back end portion of the concave portion toward the opposite direction to the shaft end, the drive shaft and the driven shaft, In order to separate the two shafts, the overlapping portion is freely moved by moving the sleeve inserted in the overlapping portion. If the driven shaft is moved upward at a position away from the engaging portion of the driven shaft with the drive shaft, in the present invention, the shaft end of the driven shaft is inclined outward at a required angle. And the axial width of the distal end surface of the lateral ridge portion of the driven shaft is smaller than the width of the bottom surface of the lateral concave portion formed on the drive shaft. The shaft end can be easily tilted upward in the concave portion of the drive shaft and can be disengaged (see FIG. 3).

  In addition, when the movement of the shaft in the upward direction is impossible due to the surrounding state, if the shaft is operated downward at a position distant from the engaging portion of the driven shaft, the tip of the protruding portion in the lateral direction of the driven shaft Since the axial width of the surface is smaller than the width of the lateral concave portion formed on the drive shaft, the convex portion formed on the tip of the driven shaft is connected to the drive shaft with which it is engaged. It is possible to move easily inside the formed concave section, and the driven shaft is driven by the shaft end of the drive shaft because the inclined surface is formed in the direction opposite to the shaft end from the end of the formed concave section. The convex shaft portion of the driven shaft that comes into contact with the inclined surface of the shaft and engages with the concave portion of the drive shaft comes off and can be easily separated (see FIG. 4). Thus, in the present invention, the shaft joint can be easily released regardless of the state of the shaft. Furthermore, since both the shafts are fitted in the state where the convex strip formed on the shaft end of the drive shaft is fitted with the concave strip formed on the driven shaft, the shaft remains in the engaged state. It is possible to move to the left and right of the direction simultaneously.

  An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a drive shaft, and one end portion of the drive shaft 1 is cut into a substantially semicircular shape with a required length to form a cut portion 2, and the cut portion A lateral protrusion 3 having a predetermined width (a) and a lateral recess 4 having a predetermined width (b) are formed continuously from the end of the shaft 2.

  Reference numeral 5 denotes a driven shaft. One end portion of the driven shaft 5 is cut into a substantially semicircular shape with a required length to form a cut portion 6, and the shaft end of the cut portion 6 is directed outward with a predetermined angle. An inclined surface 7 is formed, and a protruding strip 8 having a predetermined width (c) is formed in the axial direction to engage with the lateral recess 4 formed on the drive shaft 1 at the end of the shaft. A lateral recess 9 having a predetermined width (d) that engages with the lateral protrusion 3 formed on the drive shaft 1 is formed continuously with the portion 8. An inclined surface 10 having a predetermined angle is formed from the end on the back side toward the opposite direction to the shaft end. The width (b) of the lateral groove 4 formed on the drive shaft 1 is slightly larger than the axial width (c) of the tip of the lateral protrusion 8 formed on the driven shaft 5. Further, the width (a) of the lateral protrusion 3 formed on the drive shaft 1 and the width (d) of the lateral recess 9 formed on the driven shaft 5 are the same width.

  The shaft joint according to the present embodiment is configured as described above, and the shaft end portion of the driven shaft 5 of the lateral recess 4 formed in the cut portion 2 of the shaft end of the drive shaft 1 described above. And the lateral ridge 3 formed in the cut end 2 of the shaft end of the drive shaft 1 and the recessed ridge 9 formed in the shaft end of the driven shaft 5, respectively. In the above polymerization, the width (b) of the concave portion 4 formed on the drive shaft 1 is the convex portion formed on the driven shaft 5 as described above. 8 is slightly larger than the width (c) of the front end portion of FIG. 8, and the engagement between the concave strip portion 4 formed on the drive shaft 1 and the convex strip portion 8 formed on the front end portion of the driven shaft 5 has a margin. Moreover, since the width (a) of the convex portion 3 formed on the drive shaft 1 and the width (d) of the concave portion 9 formed on the driven shaft 5 are the same width, the drive shaft 1 Of formation The strip portion 3 and the concave strip portion 9 formed on the driven shaft 5 are fitted in close contact with each other without any gap, whereby both shafts are securely connected and power transmission is smoothly performed. .

  Further, in the embodiment of the present invention, the depth from the shaft surface of the concave strip portion 4 formed on the drive shaft 1 is the same as the height from the shaft surface of the convex strip portion 8 of the driven shaft 5, and The height from the shaft surface of the projection 3 formed on the drive shaft 1 and the depth from the shaft surface of the recess 9 formed on the driven shaft 5 are the same. The surface of is made to be flush. Reference numeral 11 denotes a cannula that covers the coupling portion when the both shafts are coupled. The cannula 11 is loosely fitted on the peristaltic shaft 1 and is slidable on the shaft. When the joined portion is covered, it is detachably fastened to the drive shaft 1. The fastening means may be any means.

  Since the embodiment of the present invention is configured as described above, in order to separate the drive shaft 1 and the driven shaft 5, the shaft end of the driven shaft 5 is inclined outward at a required angle 7. At the same time, the axial width (c) of the distal end surface of the lateral protrusion 8 of the driven shaft 5 is smaller than the width (b) of the bottom surface of the lateral recess formed on the drive shaft 1. Therefore, the shaft end of the driven shaft 1 can be easily tilted upward in the concave portion 4 of the drive shaft 1, so that the driven shaft can be tilted upward, thereby easily engaging. Can be solved (see FIG. 3).

  Further, when it is impossible to lift the driven shaft upward due to the surrounding state in the above-described separation, in the embodiment of the present invention, the shaft end is longer than the end of the horizontal concave portion 9 formed on the driven shaft 5. The inclined surface 10 is formed in the opposite direction, and the lateral width (c) of the lateral protrusion 8 of the driven shaft 1 is the lateral recess 4 formed on the drive shaft 1. Since the driven shaft 5 is moved downward at a position away from the engaging portion of both shafts, the driven shaft 5 is an upper portion of the shaft end of the drive shaft 1. And the convex shaft portion 8 of the driven shaft that engages with the concave portion 4 of the drive shaft 1 moves upward, and the inclined surface 10 of the driven shaft 5 contacts the shaft end of the drive shaft 5. In this way, the two axes can be separated (see FIG. 4).

  In the embodiment of the present invention, the width (a) of the lateral ridge 3 formed on the drive shaft 1 and the width (d) of the lateral ridge 9 formed on the driven shaft 5 are as follows. Since they have the same width, when both shafts are engaged, the above-mentioned ridge portions 3 and the ridge portions 9 are securely fitted, and both shafts can move in the axial direction right and left simultaneously without any gaps. .

Explanatory drawing of the main parts of the drive shaft and driven shaft Explanatory drawing when the drive shaft and driven shaft are engaged Explanatory drawing of lifting the driven shaft to release the engagement Explanatory drawing of lowering the driven shaft to release the engagement Perspective view of main parts of drive shaft and driven shaft Disassembled perspective view of conventional shaft joint

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drive shaft 3 Convex line part formed in a drive shaft 4 Concave line part formed in a driven shaft 5 Driven shaft 8 Convex line part formed in a driven shaft 9 Concave line 10 formed in a driven shaft Inclined surface

Claims (2)

  One end of the shaft is cut into a substantially semicircular shape with a required length, and the cut portion is connected to the lateral ridge having a predetermined width from the end of the shaft and a predetermined width so as to form a step. A drive shaft formed with a lateral recess, and one end of the shaft is cut into a semicircular shape with a required length and engaged with a lateral recess formed on the shaft end of the drive shaft A protrusion having a predetermined width is formed on the shaft end, and a lateral recess having a predetermined width is formed on the shaft end to be fitted to the horizontal protrusion formed on the drive shaft. A driven shaft that is formed continuously with the strip and has an inclined surface at a predetermined angle from the end of the concave strip toward the opposite direction to the shaft end, and the drive shaft and the driven shaft A shaft joint characterized in that the respective concave ridges and convex ridges are superposed and polymerized, and a sleeve is inserted into the outer periphery of the superposed part. The shaft end of the driven shaft is inclined outward at a required angle, and the lateral width of the lateral ridge formed on the drive shaft is defined by the axial width of the distal end surface of the lateral ridge of the driven shaft. The axial joint according to claim 1, wherein the axial joint is configured to be smaller than the width of the shaft.

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