JP2016047761A - Drive device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drive device in which a long member can be arranged easily with a simple structure.SOLUTION: A drive device 10 comprises: a rotary shaft 15 for driving a power transmission member 16; a base substance 11 for pivotally supporting the rotary shaft; a spiral spring whose inner end is connected to the rotary shaft, whose outer end is connected to the base substance, and energizing the rotary shaft; and an engagement member 23 extending in a direction including a vertical direction of the rotary shaft, engaging with the rotary shaft and the base substance detachably, and capable of being removed from one or both of the rotary shaft and the base substance.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a driving device that generates a large load by rotational driving, and relates to a driving device that mechanically suppresses the rotational driving.

  For a device that pulls out or winds up a long member wound around a drum, a drive that pulls out or winds up a wire by connecting the inner end of a spiral spring to the rotating shaft of the drum and driving the spiral spring There is a device.

  When the driving force of such a device is large, it is difficult to manually pull out or wind up the long member, and therefore it is difficult to route the long member. Therefore, it is also conceivable to suppress the rotation of the rotary shaft by the latch in a state where the long member is pulled out from the drum in advance.

Japanese Patent No. 3809559

  However, the rotation suppression by the latch requires a latch configuration that can obtain sufficient engagement against a large load caused by the spiral spring. In order to allow the long member to be pulled out freely, it resists a large load. A latching mechanism that releases sufficient engagement is required, which complicates the device.

  An object of the present invention is to provide a drive device that can easily pull out a long member with a simple configuration.

  A driving apparatus according to an aspect of the present invention includes a rotating shaft that drives a power transmission member, a base that supports the rotating shaft, an inner end connected to the rotating shaft, and an outer end connected to the base. A spiral spring that urges the rotation shaft, and a spring that is disposed so as to extend in a direction including a vertical direction of the rotation shaft, detachably engage with the rotation shaft and the base, and the rotation shaft and the And an engaging member that is removable from either one or both of the substrates.

  According to the present invention, the engagement member is disposed so as to extend in a direction including the vertical direction of the rotation shaft, and the rotation of the rotation shaft can be stopped by engaging the rotation shaft and the base body in a freely detachable manner. Therefore, the long member can be easily routed with a simple configuration of the driving device.

(A) The perspective view which shows the external appearance seen from one side of the drive device which concerns on embodiment of this invention, (b) The perspective view which shows the external appearance seen from the other side of the drive device of Fig.1 (a). (A) Top view of the drive device of FIG. 1, (b) Front view of the drive device of FIG. 1, (c) Side view of the drive device of FIG. The figure which shows the other structure of an engaging member

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment)
FIG. 1A is a perspective view showing an appearance of the drive device according to the embodiment of the present invention as viewed from one side, and FIG. 1B is a view from the other side of the drive device of FIG. It is a perspective view which shows the external appearance seen. 2A is a top view of the drive device of FIG. 1, FIG. 2B is a front view of the drive device of FIG. 1, and FIG. 2C is a side view of the drive device of FIG. Hereinafter, the configuration of the driving device will be described with reference to FIGS. 1A, 1B, and 2A to 2C.

  The driving device 10 includes a housing 11, a first spiral spring 12, a second spiral spring 13, a drum 14, a rotating shaft 15, a wire 16, a bearing 17, a first engagement portion 19, a first engagement hole 20, and a second engagement. A joint portion 21, a second engagement hole 22, and a locking pin 23 are provided.

  A housing (base body) 11 accommodates a first spiral spring 12 and a second spiral spring 13, and a drum 14 is provided adjacent to the side wall of the housing 11. The housing 11 supports the rotating shaft 15 of the drum 14.

  The outer ends of the spiral springs 12, 13 are connected to the housing 11, the inner ends of the spiral springs 12, 13 are connected to the rotating shaft 15 of the drum 14, and the spiral springs 12, 13 bias the rotating shaft 15.

  The drum 14 is wound so that the wire 16 can be pulled out and wound, and the spiral springs 12 and 13 are biased in a direction in which the drum 14 winds the wire 16.

  The wire 16 (flexible long member) is a stranded metal wire and has high strength and flexibility. The thickness of the wire (cross-sectional diameter) is, for example, about 1 to 10 mm. One end of the wire 16 is attached to the drum 14. The driving force of the driving device 10 can be transmitted to the driving object attached to the tip of the wire 16 by the drum 14 and the wire 16.

  The bearing 17 of the rotating shaft 15 is, for example, a ball bearing, and smooth rotation of the rotating shaft 15 is achieved. Although FIG. 2 shows a case where a plurality of ball bearings are used, only one ball bearing may be used, but rotation is performed at two locations, the proximal end side and the distal end side, in order to prevent axial blurring. It is preferable to support the shaft.

  A first engagement portion 19 with which the locking pin 23 is engaged is provided at the end of the rotating shaft 15. The first engaging portion 19 is provided at an end portion of the rotary shaft 15 disposed on the opposite side (base end side) of the housing 11 on the side (tip side) where the drum 14 is provided. The first engagement part 19 is formed with a first engagement hole 20 penetrating in a direction perpendicular to the rotation shaft 15.

  The housing 11 is provided with a second engaging portion 21 with which the locking pin 23 is engaged. The second engagement portion 21 has a plate shape arranged so as to protrude outward from the side wall of the housing 11. The second engagement portion 21 is formed with a second engagement hole 22 that is positioned in line with the first engagement hole 20 of the first engagement portion 19 when the rotation shaft 15 is at a predetermined angle. The second engagement portion 21 is provided on a substantially L-shaped support member, and the support member has a connection portion connected to the housing 11. The connecting portion extends toward the rotating shaft 15 in a direction perpendicular to the rotating shaft 15 so that the connecting portion can be easily supported against the rotation of the rotating shaft 15, and the second engaging portion 21 is connected to the connecting portion. On the other hand, it is provided substantially vertically, that is, substantially parallel to the rotation axis. That is, the locking pin 23 is engaged with the first engagement portion 19 and extends in a direction including the vertical direction of the rotation shaft 15, and is engaged with the second engagement portion 21, whereby the rotation shaft 15 rotates. Torque can be easily received by the support member. Here, when the support member is fixed to the housing 11, the locking pin 23 is also fixed to the housing 11, so that the rotating shaft 15 is also fixed to the housing 11, and the rotation of the rotating shaft 15. Is regulated.

  The locking pin (engagement member) 23 is inserted into and engaged with the first engagement hole 20 and the second engagement hole 22. Moreover, the latch pin 23 should just be removable from any one or both of the 1st engaging part 19 and the 2nd engaging part 21. FIG. In the present embodiment, the engagement of the locking pin (engagement member) 23 with the rotating shaft 15 and the engagement with the housing 11 are the first engagement portion 19 and the second engagement portion 21 which are through holes. It can be easily engaged and disengaged because it can be carried out by insertion into the. Further, by simply removing the locking pin 23 from only one of the engagement with the rotation shaft 15 or the housing 11, the rotation suppression state of the rotation shaft can be released, and a complicated structure such as a latch mechanism is required. And not.

  As described above, according to the present embodiment, when the wire 16 is routed in the driving device 10 that generates a large load, the locking pin 23 is provided in the first engagement hole 20 and the second engagement hole 22. By inserting and locking the rotary shaft 15, it is possible to prevent a load from being generated on the wire 16, and the wire 16 can be easily routed manually with a simple configuration. Further, the wire 16 is pulled out from the drum 14 against the driving force of the driving device 10 that generates a large load, the tip of the wire 16 is attached to the operation target, and a predetermined tension is applied to the wire 16 through a predetermined routing path. It is difficult to make it a granted state. However, in a state in which the rotation of the rotating shaft by the driving device 10 that generates a large load due to the engagement of the rotating shaft 15, the locking pin 23, and the housing 11 is suppressed, An operation target that requires a large load for operation is attached, the wire 16 is set to a predetermined tension from the operation target, and then at least the engagement of the rotary shaft 15, the locking pin 23, and the housing 11 is performed. By releasing one engagement, the drive device 10 can easily make the operation target operable via the wire 16.

  In the present embodiment, the housing has been described as an example of the base body. However, the present invention is not limited to this, and for example, a frame that surrounds and fixes a spiral spring may be used.

  Further, in the present embodiment, the wire has been described as an example of the flexible long member, but the present invention is not limited to this, and may be a belt, for example.

  In the present embodiment, the case where the locking pin is fitted and inserted into the second engagement hole has been described. However, the present invention is not limited to this, and the locking pin and the second engagement hole may be screwed together. Good. Thereby, the locking pin can be securely locked and the locking pin can be easily removed. Further, the locking pin and the first engagement hole may be screwed together, and the locking pin may be fitted and inserted into the second engagement hole, or the locking pin, the first engagement hole, and the second engagement hole. And may be screwed together. Further, the insertion and insertion in the present embodiment may be loose fitting.

  In the present embodiment, the engaging pin is described as an example of the engaging member. However, the present invention is not limited to this, and the engaging pin is arranged so as to extend in the direction including the vertical direction of the rotating shaft and can be freely engaged and disengaged. It is sufficient to engage the rotating shaft and the base. For example, as shown in FIG. 3, a square columnar projection 15a is provided at the tip of the rotating shaft 15, and a rectangular columnar projection 21a is provided directly below and fixed from the housing 11, and is fitted into the projection 15a and the projection 21a at the same time. The rotating shaft 15 may be locked using an engaging member 23a having two concave portions to be combined.

  In the present embodiment, the case where the locking pin, the first engagement hole, and the second engagement hole are arranged on the side opposite to the side where the drum of the housing is provided has been described. It may be arranged on the provided side.

  In the present embodiment, the drum and the wire have been described as examples of the power transmission member. However, the present invention is not limited to this, and a gear, a cam, or the like may be used as the power transmission member. The power transmission member is not particularly limited as long as it is a member that transmits the driving force generated by the driving device to the target so that the driving purpose of the driving device can be achieved. If the object is moved up and down, it is sufficient that the driven object can be pulled up and down.

  In the present embodiment, the case where the first engagement portion is provided on the rotating shaft has been described as an example. However, the present invention is not limited to this, and a coaxial gear is attached to the rotating shaft and the coaxial gear is used as the rotating shaft. The joint member may be disposed so as to extend in a direction including the vertical direction of the rotation axis and engage with the coaxial gear in a freely detachable manner.

  Further, the rotation axis may be common with the center axis of the drum, or may be connected to the center axis of the drum. Further, the drive source of the drive device 10 may be a motor in order to exhibit the effect of preventing rotation by the motor, but is preferably a spiral spring that does not have a stopping means.

  The present invention is useful for easily routing a long member with a simple configuration.

DESCRIPTION OF SYMBOLS 10 Drive apparatus 11 Housing 12 1st spiral spring 13 2nd spiral spring 14 Drum 15 Rotating shaft 15a, 21a Protrusion 16 Wire 17 Bearing 19 1st engagement part 20 1st engagement hole 21 2nd engagement part 22 2nd engagement Joint hole 23 Locking pin 23a Engagement member

Claims (4)

A rotating shaft for driving the power transmission member;
A base that pivotally supports the rotating shaft;
A spiral spring having an inner end connected to the rotating shaft, an outer end connected to the base body, and biasing the rotating shaft;
The rotary shaft is disposed so as to extend in a direction including a vertical direction of the rotary shaft, and is detachably engaged with the rotary shaft and the base body, and is removable from one or both of the rotary shaft and the base body. An engaging member;
A drive device comprising: The engaging member is a locking pin fitted and inserted into the rotating shaft in a direction perpendicular to the rotating shaft,
The base is provided with an engaging portion having an engaging hole engageable with the locking pin fitted and inserted into the rotating shaft.
The drive device according to claim 1. The locking pin and the engagement hole are screwed and locked,
The drive device according to claim 2. The power transmission member is
A flexible elongated member;
A drum to which one end of the flexible elongate member is connected, and the flexible elongate member is pulled out or wound;
With
The rotating shaft is common to the central axis of the drum, or connected to the central axis of the drum.
The drive device according to claim 1.

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