JP2008008450A - Device for transmitting and controlling driving power - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for transmitting and controlling driving power so as to perform and stop the power transmission if needed when the driving power in a definite rotational direction is transmitted from an input side to an load side, which can control the transmission of the driving power irrespective of the rotational direction in the input side. <P>SOLUTION: The device for transmitting and controlling the driving power is composed of a fixed rod 1, an intermediate shaft 2 rotatably fitted on the fixed rod 1, a transfer shaft 3 which is arranged so as to be perpendicular to the fixed rod 1 and the intermediate shaft 2 and is integrated with the intermediate shaft 2, a control member 25 which is rotatably fitted on the end portion of the fixed rod 1 and is engaged with one end of the intermediate shaft 2, an input bevel gear 15 and an output bevel gear 17 which are arranged around the intermediate shaft 2 so as to be symmetrically arranged on both sides of the transfer shaft 3, and a transfer bevel gear 24 which is fitted on the transfer shaft 3 and is engaged with the input bevel gear 15 and the output bevel gear 17 respectively. When the control member 25 has been locked for an outside control mechanism, any rotation of the input side in the normal direction and the reverse direction is transmitted to the output side. When the lock has been released, the transmission of the rotation to the output side is intercepted. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a driving force transmission control device. For example, in a paper feeding unit of an office machine, when a plurality of trays are fed by a single motor, it is installed for each tray and input to an input rotating member. It is used as a switching device that transmits or interrupts the driving force of the motor to the output rotating member side.

In order to switch the driving force in a paper feeding unit or the like of an office machine, there is a spring clutch as a conventionally used device (Patent Document 1). The spring clutch has a configuration in which one end of a coil spring is locked to the input rotation member of the input rotation member and the output rotation member arranged on the same axis, and the other end of the coil spring is wound around the output rotation member in a free state. ing. The driving force is transmitted from the input rotating member to the output rotating member when the coil spring is bound by rotating the input rotating member in a constant rotating direction, and the coil is rotated when the input rotating member rotates in the opposite direction. The spring is expanded in diameter and transmission of the driving force is interrupted.
Japanese Utility Model Publication No. 6-73464 (FIG. 1)

  The above-mentioned spring clutch can control transmission of driving force in a certain rotational direction determined by the winding direction of the coil spring, but cannot be controlled if the rotational direction is reversed. There was inconvenience that transmission control was not possible.

  Accordingly, an object of the present invention is to provide a driving force transmission control device capable of performing transmission control with respect to rotation in both directions.

  In order to solve the above problems, a driving force transmission control device according to the present invention includes a fixed shaft 1, an intermediate shaft 2 that is rotatably fitted around the fixed shaft 1, and the fixed shaft 1 and the intermediate shaft 2. A control shaft 25 that is orthogonal to the intermediate shaft 2 and is rotatably fitted to the end of the fixed shaft 1 and is engaged with one end of the intermediate shaft 2. The input bevel gear 15 and the output bevel gear 17 which are fitted and arranged symmetrically on both sides of the transmission shaft 3 around the intermediate shaft 2, are fitted to the transmission shaft 3 and the input bevel gear 15 and an output bevel gear 17 which are respectively meshed with the output bevel gear 17.

  In the above apparatus, when the control member 25 is locked from an external control mechanism, the rotation on the input side is transmitted to the output side, and when the lock is released, the transmission of rotation to the output side is blocked. In this case, the direction of rotation of the driving force applied to the input side does not matter.

  An intermediate bearing portion 4 is provided at a portion where the intermediate shaft 2 intersects the transmission shaft 3, and a bearing portion 8 of the transmission bevel gear 24 is provided on the transmission shaft 3, and the intermediate bearing portion 4 extends from the bearing portion 8. A coupling piece 9 extending in the radial direction beyond the fixed shaft 1 is provided, and the fixed shaft 1 is penetrated through a through hole 12 provided in the coupling piece 9, and the intermediate shaft 2 and the transmission shaft 3 are penetrated by the penetration. In addition, the fixed shaft 1 can be combined and integrated.

  Further, the transmission shaft 3 is provided symmetrically on both sides with respect to the intermediate shaft 2, the bearing portions 8 of the transmission bevel gears 24 are provided on the transmission shafts 3, and the bearing portions 8 A coupling piece 9 extending in the opposite direction beyond the fixed shaft 1 in the radial direction through the intermediate bearing portion 4 is provided, and the fixed shaft 1 is penetrated through a through hole 12 provided in each coupling piece 9, Thus, the intermediate shaft 2, the two transmission shafts 3, and the fixed shaft 1 can be combined and integrated.

  As described above, the driving force transmission control device according to the present invention transmits the rotation on the input side to the output side when the control member is locked from the external control mechanism, and outputs when the lock is released. Transmission of rotation to the side is interrupted. In this case, there is a convenience that the driving force applied to the input side may be rotated in either the forward direction or the reverse direction.

  Further, the transmission shaft is provided with a coupling piece extending radially beyond the fixed shaft, and the fixed shaft is passed through a through hole provided in the coupling piece. Since the transmission shaft and the fixed shaft are combined and integrated, the assemblability is good. Furthermore, by adopting a configuration in which the two transmission shafts are provided symmetrically, the transmission shafts have the same shape and can have compatibility. Further, the shapes of the input bevel gear, the output bevel gear, and the transmission bevel gear can be formed in the same shape, and these can be made compatible.

  Embodiments will be described below with reference to the accompanying drawings.

  In order to solve the above-described problems, the present invention includes a fixed shaft 1, an intermediate shaft 2 that is rotatably fitted around the fixed shaft 1, and the fixed shaft 1, as shown in FIGS. 1 to 3. And a transmission shaft 3 that is orthogonal to the intermediate shaft 2 and is provided integrally with the intermediate shaft 2.

  The intermediate shaft 2 is provided with a large-diameter intermediate bearing portion 4 at an intermediate portion in the length direction, and pipe shaft portions 5 and 5 are provided on both sides in the axial direction from the intermediate bearing portion 4. A common shaft hole 6 is provided in the tube shaft portions 5 and 5 and the intermediate bearing portion 4. Further, the intermediate bearing portion 4 is provided with a coupling hole 7 having a rectangular cross section orthogonal to the shaft hole 6. An engagement protrusion 10 is provided on the end surface of one tube shaft portion 5.

  The transmission shaft 3 has a bearing portion 8 and a flat coupling piece 9 extending from the bearing portion 8 to the intermediate bearing portion 4 in the radial direction beyond the fixed shaft 1, and the outer end surface of the bearing portion 8. The collar 11 is provided with a retaining collar. The coupling piece 9 has a width larger than the diameter of the fixed shaft 1, and a through hole 12 is provided on the width surface. The through hole 12 is formed to have the same diameter as the shaft hole 6. When the transmission shaft 3 is inserted into the coupling hole 7 of the intermediate bearing portion 4, the bearing portion 8 contacts the outer diameter surface of the intermediate bearing portion 4, and the through hole 12 coincides with the shaft hole 6.

  An input gear 13 is rotatably fitted to one tube shaft portion 5 of the intermediate shaft 2, and the other tube shaft portion 5 (provided with the engagement protrusion 10 is provided symmetrically with respect to the transmission shaft 3. An output gear 14 is rotatably fitted around the other pipe shaft portion 5).

  The input gear 13 is constituted by an input bevel gear 15 and an input spur gear 16 engaged with the large-diameter end face thereof, and the output gear 14 is engaged with the output bevel gear 17 and its large-diameter end face. And an output spur gear 18. The input bevel gear 15 and the output bevel gear 17 are both in contact with both end surfaces of the intermediate bearing portion 4 at the small diameter end surfaces.

  The coupling structure of the input bevel gear 15 and the input spur gear 16 and the coupling structure of the output bevel gear 17 and the output spur gear 18 which are the same structure as the input bevel gear 15 are shown in FIGS. In the large-diameter end face of the output bevel gear 17, an annular coupling groove 21 having a discontinuous portion in part with a shaft hole 19 as the center is provided. Oppositely to this, on the opposite end faces of the input spur gear 16 and the output spur gear 18, a coupling protrusion 22 having a shape complementary to the coupling groove 21 is provided around the shaft hole 23. As a result of the above configuration, the input bevel gear 15 and the output bevel gear 17 have the same shape and are compatible. Similarly, the input spur gear 16 and the output spur gear 18 have the same shape and are interchangeable.

  On the other hand, the transmission bevel gear 24 fitted to the bearing portion 8 of the transmission shaft 3 meshes with the input bevel gear 15 and the output bevel gear 17, and the input bevel gear 15, the transmission bevel gear 24 and the output bevel gear 17. The transmission bevel gears 24 constitute miter gears.

  Around the shaft hole 19 on the large-diameter end face of the transmission bevel gear 24, the same coupling groove 21 as that provided on the large-diameter end faces of the input bevel gear 15 and the output bevel gear 17 is provided. Accordingly, the transmission bevel gear 24 has the same shape as the input bevel gear 15 and the output bevel gear 17 and is compatible.

  A control member 25 made of a gear is rotatably fitted around the fixed shaft 1 protruding from the output spur gear 18. An end portion of the intermediate shaft 2 where the engaging protrusion 10 is formed is near the outer end portion of the output spur gear 18, and a coupling protrusion 26 provided at the inner end portion of the control member 25 is the engaging protrusion 10. It is engaged with the recess between them in the rotational direction.

  A retaining ring 27 is fitted to the fixed shaft 1 in contact with the outer end surface of the control member 25, and a retaining ring 28 is fitted to the fixed shaft 1 in contact with the outer end surface of the input spur gear 16, so that the entire retaining is shown. It is done.

  The driving force transmission control device according to the first embodiment is configured as described above, and when used, the input spur gear 16 is engaged with the input spur gear 16 and the output spur gear 18 is engaged with the output spur gear 18. . An appropriate actuator 31 having a plunger 32 is attached to the fixed portion 33 so as to approach the radial direction of the control member 25. When the plunger 32 moves forward, it engages and restrains the gear surface of the control member 25 as shown by a one-dot chain line, and when the plunger 32 moves backward, the restraint is released.

  Now, when the plunger 32 is advanced by the action of the actuator 31 and the control member 25 is restrained, the intermediate shaft 2 engaged therewith is fixed. In this state, when a driving force in the A direction indicated by an arrow is input to the input gear 29, the input gear 13 constituted by the input spur gear 16 and the input bevel gear 15 is moved around the intermediate shaft 2 in the B direction. Rotate to. The transmission bevel gear 24 rotates without revolving and rotates the output gear 14 including the output bevel gear 17 and the output spur gear 18 in the A direction. Since the output gear 30 is engaged with the load, load torque is applied, but the output gear 30 is rotated in the B direction by overcoming the load torque. That is, the driving force on the input side is transmitted to the output side load by reversing the direction of rotation.

  On the other hand, when the driving force in the A direction indicated by the arrow is input to the input gear 29 in the same manner as described above with the plunger 32 retracted by the action of the actuator 31 and the restraint of the control member 25 is released, Although the gear 13 is rotated in the direction B, load torque is applied to the output gear 30 and the output gear 14 meshed with the output gear 30, so that the transmission bevel gear 24 supported by the intermediate shaft 2 in the free state is Only revolve without rotating. Thereby, transmission of the driving force to the load on the output side is interrupted.

  In the above description, the case where the input gear 29 rotates in the A direction has been described. However, when the input gear 29 rotates in the B direction (refer to the one-dot chain line arrow), the transmission of the driving force and the control of the cutoff are similarly performed. It can be carried out.

  Next, Example 2 will be described with reference to FIGS. 3 and 4. In the structure of the second embodiment, the difference from the first embodiment is that the transmission shaft 3 is provided symmetrically on both sides of the intermediate shaft 2 as a reference, and each transmission shaft 3 has a transmission bevel gear. 24 is fitted. Each transmission shaft 3 has substantially the same shape as in the above case, but the coupling piece 9 in this case is formed in a semicircular cross-sectional shape as shown in FIG. A detent groove 34 is formed. The two transmission shafts 3 have the same shape and are compatible.

  Further, the coupling hole 7 provided in the intermediate bearing portion 4 of the intermediate shaft 2 is formed in a circular hole, and a pair of protrusions 35 are provided in the length direction at positions opposed to the inner peripheral surface thereof. Fit into this.

  When the transmission bevel gear 24 is fitted to each of the transmission shafts 3 and inserted into the coupling holes 7 from the opposite side, the protrusions 35 are fitted into the rotation-preventing grooves 34 and the flat portions of both coupling pieces 9 are fitted. The end faces come into contact with each other to form a cylindrical shape, and both the through holes 12 also coincide. When the fixed shaft 1 is inserted through the intermediate shaft 2, the fixed shaft 1 passes through the through hole 12, so that the intermediate shaft 2, the pair of transmission shafts 3, the pair of transmission bevel gears 24, and the fixed shaft 1 are combined and integrated. The

  Since the other configuration of the second embodiment is the same as that of the first embodiment described above, the same portions are denoted by the same reference numerals and description thereof is omitted.

  As described above, the second embodiment is substantially different from the first embodiment in that the two transmission shafts 3 and the transmission bevel gear 24 are provided symmetrically. There is an advantage that the balance during rotation is good.

Sectional view of Example 1 Exploded perspective view Sectional drawing of Example 2 Exploded perspective view

Explanation of symbols

1 fixed shaft 2 intermediate shaft 3 transmission shaft 4 intermediate bearing portion 5 tube shaft portion 6 shaft hole 7 coupling hole 8 bearing portion 9 coupling piece 10 engagement projection 11 retaining collar 12 through hole 13 input gear 14 output gear 15 input bevel gear 16 input spur gear 17 output bevel gear 18 output spur gear 19 shaft hole 21 coupling groove 22 coupling protrusion 23 shaft hole 24 transmission bevel gear 25 control member 26 coupling projection 27 retaining ring 28 retaining ring 29 input section gear 30 output section gear 31 Actuator 32 Plunger 33 Fixed part 34 Non-rotating part 35 Projection

Claims (7)

  A fixed shaft (1), an intermediate shaft (2) rotatably fitted around the fixed shaft (1), an orthogonal state with respect to the fixed shaft (1) and the intermediate shaft (2) and the intermediate shaft ( 2) a transmission shaft (3) provided integrally with the control shaft (25), which is rotatably fitted to the end of the fixed shaft (1) and engaged with one end of the intermediate shaft (2). An input bevel gear (15) and an output bevel gear (17) symmetrically fitted and arranged on both sides of the intermediate shaft (2) with respect to the transmission shaft (3), and the transmission shaft (3) And the transmission bevel gear (24) meshed with the input bevel gear (15) and the output bevel gear (17), respectively, and the control member (25) is locked from an external control mechanism. The rotation on the input side is transmitted to the output side, and when the lock is released, the rotation transmission to the output side is interrupted. Driving force transmission control device.   An intermediate bearing portion (4) facing the input bevel gear (15) and the output bevel gear (17) is provided at an intersection of the intermediate shaft (2) with the transmission shaft (3), and the transmission shaft (3 ) Is provided with a bearing portion (8) of the transmission bevel gear (24) and extends from the bearing portion (8) to the intermediate bearing portion (4) in the radial direction beyond the fixed shaft (1). (9) is provided, and the fixed shaft (1) is passed through a through hole (12) provided in the coupling piece (9), and the intermediate shaft (2), the transmission shaft (3), and the fixed shaft are penetrated by the penetration. The driving force transmission control device according to claim 1, wherein (1) is coupled and integrated.   The transmission shaft (3) is provided symmetrically on both sides with respect to the intermediate shaft (2), and a bearing portion (8) of a transmission bevel gear (24) is provided on each transmission shaft (3). In addition, there is provided a coupling piece (9) extending from each bearing portion (8) to the intermediate bearing portion (4) in the radial direction beyond the fixed shaft (1) in the opposite direction, and each coupling piece (9) The fixed shaft (1) is penetrated through a through hole (12) provided in the intermediate shaft (2), and the intermediate shaft (2), the two transmission shafts (3) and the fixed shaft (1) are combined and integrated by the penetration. Item 2. The driving force transmission control device according to Item 1.   4. The driving force transmission according to claim 1, wherein the input bevel gear (15) and the transmission bevel gear (24), and the transmission bevel gear (24) and the output bevel gear (17) each constitute a miter gear. Control device.   The driving force transmission control device according to any one of claims 1 to 4, wherein a retaining collar (11) is provided on an outer end surface of the transmission shaft (3).   The input spur gear (16) and the output spur gear (18) are engaged with the large-diameter end surfaces of the input bevel gear (15) and the output bevel gear (17), respectively. The driving force transmission control device according to any one of claims 1 to 5, wherein (14) is configured.   The input bevel gear (15) and the input bevel gear (16) and the output bevel gear (17) and the output bevel gear (18) have the same coupling structure, and the input bevel gear (15) and the output bevel gear (18). The driving force transmission control device according to claim 5 or 6, wherein the gear (17) and the transmission bevel gear (24) have the same shape.

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