JP2009232616A - Handle operation type working device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a handle operation type working device of compact and simple structure, for smoothly performing work operation with a work unit at the tip of an operational pipe, by rocking operation of the handle by hand while holding a grip part. <P>SOLUTION: The handle operation type working device includes a support box 6 secured to a middle part between a grip part 3 and an operation pipe 1, a drive rotating shaft 7 which is supported in the direction orthogonal to the axial direction of the operation pipe by the support box, with a base end of a handle 5 attached through a one-way clutch, a sleeve capped over the drive rotating shaft, movable in axial direction but not movable in rotational direction, a pair of drive bevel gears arranged concentrically with the drive rotating shaft and constantly engaging with the driven bevel gear, with a one-way clutch attached on the inner peripheral surface, and a sleeve position switching device 25 for shifting the sleeve in the direction of the drive rotating shaft. Depending on the position of the sleeve, switching between forward and reverse rotations as well as locking is available. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention has been developed for use in a working device such as a remote control yakko or remote control clipper as a remote control tool used in distribution line construction. However, the field of use is not limited to these.

A remote control tool is used by an operator away from the distribution line to perform distribution line construction. As an example, FIG. 6 shows a conventional remote control YATCO (Patent Document 1). In this conventional example, the swing handle 81 is swung to gradually open or close the Ytco tool 82. If the handle operation is stopped, the Yatco tool 82 is moved to its open / closed position. It is supposed to be locked.
Japanese Patent No. 3435212

  However, as shown in FIG. 6, the conventional example requires an auxiliary operation rod 84 in addition to the main operation rod 83, which not only increases the cost of the structure and increases the cost but also makes it bulky and poor in operability. There is a problem.

  It has been known that a rotating shaft is inserted into the main operating rod, a rotating handle is provided at the base of the main operating rod, and the rotation of the rotating handle is transmitted to the rotating shaft to perform a desired operation. However, one hand can not be used to support the main operating rod for the operation of the rotary handle, the work is not stable, and it is inferior to the one with a swinging handle for quick and accurate work There is.

  An object of the present invention is to provide a handle-operated working device that can solve the problems of the conventional example.

  In order to achieve the above object, the present invention includes a working tool at the distal end of the operating cylinder, a gripping portion that is concentric with the operating cylinder at the proximal end, and a swinging handle disposed near the gripping section. In the handle operation type working device for operating the work tool by reciprocatingly swinging the handle, a support box fixed between the grip portion and the operation cylinder, and an axis direction of the operation cylinder in the support box Drive rotation shaft supported in a direction orthogonal to the handle and to which the base end portion of the handle is attached via a one-way clutch, biasing means for biasing the handle in the rotational direction for separating the handle from the grip portion, and the inside of the operation cylinder are inserted. The driven rotary shaft with the base end portion located in the support box and the driven bevel gear fixed thereto, and the rotational movement of the driven rotary shaft are used as the work movement of the work tool at the distal end portion. In the conversion means for conversion and the drive rotation shaft, A pair of drive bevel gears which are slidably fitted in the direction of movement but not in the direction of rotation, and are concentrically arranged with the drive rotation shaft. A one-way clutch is mounted on the inner peripheral surface and is always meshed with the driven bevel gear. And a sleeve position switching tool for moving the sleeve in the axial direction of the drive rotation shaft, and when the sleeve is moved to the normal rotation designated position by the sleeve position switching tool, the sleeve of the pair of drive bevel gears Engage with the one-way clutch of the first drive bevel gear and the second drive bevel gear of the pair of drive bevel gears is disengaged from the one-way clutch, and the reciprocating swing of the handle is driven to rotate. When the shaft is converted to forward rotation and moved to the reverse rotation designated position, the first drive bevel gear is disengaged from the one-way clutch and the second drive bevel gear is engaged with the one-way clutch. When the reciprocating swing of the handle is converted into the reverse rotation of the driven rotation shaft and moved to the lock specified position between the forward rotation specified position and the reverse rotation specified position, the first drive is performed. The one-way clutch of the bevel gear and the one-way clutch of the second drive bevel gear are engaged to lock the rotation of the driven rotary shaft.

  Further, the rotation transmission device of the present invention comprising the main part of the present invention comprises a support box, a drive rotating shaft supported by the support box so as to be rotatable in one direction, and a base end portion located in the support box. A driven rotary shaft to which the driven bevel gear is fixed and arranged in a direction orthogonal to the drive rotary shaft, a sleeve that is axially movable on the drive rotary shaft and is non-rotatable, and a drive rotary shaft A pair of drive bevel gears that are arranged concentrically with each other, have a one-way clutch attached to the inner peripheral surface, and are always meshed with the driven bevel gears, and a sleeve position switching tool that moves the sleeve in the axial direction of the drive rotation shaft. The sleeve engages with the one-way clutch of the first drive bevel gear of the pair of drive bevel gears and moves the pair of drives when the sleeve is moved to the forward rotation designated position by the sleeve position switching tool. Of the bevel gear When the second drive bevel gear is disengaged from the one-way clutch, the one-way rotation of the drive rotation shaft is converted into the forward rotation of the driven rotation shaft and moved to the reverse rotation designated position. The first drive bevel gear is disengaged from the one-way clutch and the second drive bevel gear is engaged with the one-way clutch, so that the one-way rotation of the drive rotation shaft is changed to the reverse rotation of the driven rotation shaft. When converted and moved to a lock designated position intermediate between the forward rotation designated position and the reverse rotation designated position, both the one-way clutch of the first drive bevel gear and the one-way clutch of the second drive bevel gear And the rotation of the driven rotating shaft is locked.

  According to the handle operation type work device of the present invention, the driven rotation shaft can be rotated by the swinging operation of the handle by the hand holding the grip portion, and this can be converted into the work operation of the work tool. An equivalent of the auxiliary operation rod of the conventional example becomes unnecessary, and the structure can be simplified and made compact. Also, when the position of the three part is switched by the sleeve position switching tool, the same reciprocating handle operation rotates the driven rotation shaft in the forward direction to move the work tool in the forward direction, or rotates the driven rotation shaft in the reverse direction. The work tool can be operated in the reverse direction, and the rotation of the driven rotary shaft can be locked to lock the work tool at the work position.

  In addition, according to the rotation transmission device of the present invention, although the structure is simple, the one-way rotation of the drive rotation shaft can be converted into the positive rotation of the driven rotation shaft by the three portion position switching operation, The rotation can be converted to reverse rotation, and the rotation of the driven rotation shaft can be locked.

  In the embodiments shown in FIGS. 1 to 5, the present invention is applied to a remote control yatco. The remote control yatco is provided with a yat tool (work tool) 2 at the distal end of the operation tube 1, and a grip part 3 concentric with the operation tube 1 at the base end. A handle 5 is provided and the handle 5 is opened and closed by reciprocatingly swinging the handle 5.

  A support box 6 is fixed between the grip portion 3 and the operation cylinder 1, and a drive rotary shaft 7 is supported on the support box 6 in a direction orthogonal to the axial direction of the operation cylinder 1. The cross-sectional shape of the central portion 7b excluding both ends of the drive rotating shaft 7 is a hexagon. A bifurcated base end portion 9 of the handle 5 is attached to both outer ends 7 a and 7 a of the drive rotating shaft 7 via one-way clutches 8 and 8. It is configured to be converted to dynamic. Specifically, when the handle 5 is swung in the direction of gripping, the one-way clutch 8 transmits the movement to the drive rotary shaft 7, and when the handle 5 is swung in the direction of opening away from the grip 3, 8 is idled so that its movement is not transmitted to the drive rotary shaft 7. In addition, a coil spring (biasing means) 10 is provided for biasing the handle 5 in the rotational direction for separating the handle 5 from the grip portion 3.

  A driven rotary shaft 11 is disposed in the operation cylinder 1 so as to be inserted therethrough. The base end portion of the driven rotating shaft 11 is located in the support box 6, and the driven bevel gear 12 is fixed thereto. The driven rotary shaft 11 and the driven bevel gear 12 are rotatably supported by the support box 6 by a bearing 13.

  The rotational movement of the driven rotary shaft 11 is converted into an opening / closing movement (working movement) of the yatco tool 2 at its tip. As a conversion means 14 therefor, a nut member 15 that converts the rotation of the driven rotary shaft 11 into a slide motion, and a link member 16 that converts the slide motion of the nut member 15 into an open / close motion of the movable portion 2a of the yatco tool 2. We use what we have. The nut member 15 is screwed into a screw provided at the distal end portion of the driven rotary shaft 11 and is disposed so as to prevent the rotation of the nut member 15. Move forward and backward in 1. The forward / backward movement of the nut member 15 is transmitted to the movable part 2a via the link member 16, and the yatco tool 2 is opened and closed.

  A sleeve 17 is fitted over the drive rotating shaft 7. The sleeve 17 has a hexagonal cross-sectional shape on the inner periphery, and is fitted to the hexagonal cross section (center portion) 7b of the drive rotating shaft 11 so that the sleeve 17 is not relatively rotatable on the drive rotating shaft 7. It can move in the axial direction. On the outer periphery of the center of the sleeve 17 in the axial direction, an engaging portion 18 including a pair of projecting rings 18a and 18a is provided.

  In the support box 6, a pair of drive bevel gears that are located on the outer periphery of the both ends of the drive rotation shaft 7 and are concentric with the drive rotation shaft 7, that is, a first drive bevel gear 19 a and a second The drive bevel gear 19b is disposed. These drive bevel gears 19a and 19b are attached to the driven bevel gear 12 with one-way clutches 20a and 20b attached to their inner peripheral surfaces. The drive bevel gears 19a and 19b are rotatably supported by the support box 6 by bearings 22a and 22b. The bearings 22a and 22b support the sleeve 17 and the drive rotary shaft 7 rotatably on the support box 6 through a pair of drive bevel gears 19a and 19b and the one-way clutches 20a and 20b. Yes.

  The one-way clutches 20a and 20b transmit the one-way rotation of the drive rotating shaft 7 and eventually the sleeve 17 to the drive bevel gears 19a and 19b, and idle with respect to the reverse rotation transmitted from the drive bevel gears 19a and 19b. It is configured as follows.

  As shown in FIGS. 2 and 4, the support box 6 is provided with a sleeve position switching tool 25 that moves the sleeve 17 in the axial direction of the drive rotating shaft 7. The sleeve position switching tool 25 includes a pin 26 that engages with the engaging portion 18 of the sleeve 17, and a dial member 27 that is provided so that the pin 26 protrudes downward at a position eccentric from the rotation center line. It is configured. The dial member 27 is supported by the top plate 28 of the support box 6 while being rotatable around a vertical line. When the dial member 27 is rotated using a knob 29 provided on the side thereof, the pin 26 is engaged with the engagement member 27. The sleeve 17 can be slid by pushing the joint portion 18.

  As shown in FIG. 5, the sleeve 17 is locked by the sleeve position switching tool 25 between the forward rotation designation position P, the reverse rotation designation position Q, and the intermediate position between the forward rotation designation position P and the reverse rotation designation position Q. It is configured to be switched to three positions, designated position R.

  When the sleeve 17 is moved to the normal rotation designated position P as shown in FIGS. 3 and 4, the sleeve 17 is engaged with the engaging portion 23a of the one-way clutch 20a of the first drive bevel gear 19a. At the same time, the engagement of the second drive bevel gear 19b with the engaging portion 23b of the one-way clutch 20b is released. 3 and 4, the engaging portions 23a and 23b of the one-way clutches 20a and 20b are indicated by X-rays, and the non-engaging portions 24a and 25b are indicated by dots. The non-engaging portions 24a and 24b are in contact with the sleeve 17 in a rotatable relationship. In FIGS. 3 and 4, the second drive bevel gear 19b is in an idling relationship with the sleeve 17. Since the non-engaging portions 24a and 24b exist, the drive rotating shaft 7 can be supported by the common bearings 22a and 22b together with the drive bevel gears 19a and 19b.

  At the positive rotation designated position P, the rotation of the drive rotary shaft 7 that rotates in one direction by the reciprocating swing of the handle 5 is transmitted from the sleeve 17 that is in an integral rotational relationship with this via the engaging portion 23a of the one-way clutch 20a. The driven rotary shaft 11 is rotated in the forward direction via the driven bevel gear 12 transmitted to the first drive bevel gear 19a and meshed therewith. At this time, the second drive bevel gear 19b is rotated by the driven bevel gear 12, but since the engagement between the second drive bevel gear 19b and the engaging portion 23a of the one-way clutch 20b is released, To do.

  When the sleeve 17 is moved to the reverse rotation designated position Q, the sleeve 17 is disengaged from the engagement portion 23a of the one-way clutch 20a of the first drive bevel gear 19a and the second drive bevel gear 19b. The one-way clutch 20b is engaged with the engaging portion 23b.

  At the reverse rotation designated position Q, the rotation of the drive rotary shaft 7 that rotates in one direction by the reciprocating swing of the handle 5 is caused to rotate from the sleeve 17 that is in an integral rotational relationship with this via the engaging portion 23b of the one-way clutch 20b. The driven rotating shaft 11 is rotated in the direction opposite to that at the forward rotation designated position P via the driven bevel gear 12 transmitted to and meshed with the second drive bevel gear 19b. At this time, the first drive bevel gear 19a is rotated by the driven bevel gear 12, but the first drive bevel gear 19a and the one-way clutch 20a are disengaged, so that the first drive bevel gear 19a rotates idle.

  When the sleeve 17 is moved to the lock designated position R, the sleeve 17 is engaged with the engaging portion 23a of the one-way clutch 20a of the first drive bevel gear 19a and the one-way clutch 20b of the second drive bevel gear 19b. Engagement with both of the engaging portions 23b is performed. At this time, the direction of the rotational force transmitted from the driven bevel gear 12 to the first drive bevel gear 19a is opposite to the direction of the rotational force transmitted from the driven bevel gear 12 to the second drive bevel gear 19b. Thus, the rotation of the driven rotating shaft 11 is locked because the mutual rotation is prevented.

  Next, how to use the remote control YATCO will be described. Since the operator holds the operation cylinder 1 with one hand and holds the grip portion 3 with the other hand, the remote control yatco is supported, so that the work can be performed under a stable support state. When the sleeve position switching tool 25 is set to the normal rotation designated position P and the handle 5 is repeatedly swung by the hand holding the grip portion 3, the drive rotary shaft 7 rotates in one direction, It is transmitted from the sleeve 17 to the first drive bevel gear 19a, and then transmitted to the driven rotating shaft 11 via the driven bevel gear 12, which is rotated forward. The forward rotation of the driven rotating shaft 11 is converted into the closing operation of the yat tool 2 by the converting means 14. In other words, when the operator operates the handle 5, the tool 2 is gradually closed to grip the object.

  The sleeve position switching tool 25 may be set at the lock designated position R in order to fix the tool 2 while holding the object. In this way, the rotation of the driven bevel gear 12 is locked by the drive bevel gears 19a and 19b, and consequently the rotation of the driven rotation shaft 11 is locked, so that the opening / closing movement of the yat tool 2 is locked.

  In order to open the Yatco tool 2, the sleeve position switching tool 25 is set to the reverse rotation designated position Q. If the handle 5 is repeatedly swung with the hand holding the grip portion 3, the drive rotary shaft 7 rotates in one direction, and this rotation is transmitted from the sleeve 17 to the second drive bevel gear 19b, and then the driven bevel gear. 12 is transmitted to the driven rotating shaft 11 via 12 and rotated in the reverse direction. The reverse rotation of the driven rotating shaft 11 is converted into an opening operation of the yat tool 2 by the converting means 14. That is, when the operator operates the handle 5, the tool 2 can be gradually opened.

  The present invention can be used for various handle-operated working devices such as a remote operation clipper in addition to a remote operation yatco.

1 is a schematic overall view showing an embodiment of the present invention. The side view of the principal part. FIG. FIG. Explanatory drawing which shows the relationship between a sleeve position switching tool and a sleeve. FIG.

Explanation of symbols

1 Operation cylinder 2 Yatco tool (work tool)
3 Grip 5 Handle 6 Support box 7 Drive shaft 8 One-way clutch
10 Coil spring (biasing means)
11 Driven shaft
12 Driven bevel gear
14 Conversion means
17 sleeve
19a, 19b Drive bevel gear
20a, 20b one-way clutch
25 Sleeve position changer

Claims (2)

A work tool is provided at the distal end of the operating cylinder, and a gripping part that is concentric with the operating cylinder is provided at the proximal end, and a swinging handle is provided in the vicinity of the gripping part. In the handle operation type work device for operating the work tool,
A support box fixed in the middle between the gripping part and the operation cylinder;
A drive rotary shaft supported by a support box in a direction orthogonal to the axial center direction of the operation cylinder, and attached to the base end of the handle via a one-way clutch;
An urging means for urging the handle in a rotational direction to release the handle from the gripping portion;
A driven rotary shaft that is arranged so as to be inserted through the operation cylinder, the base end portion is located in the support box, and the driven bevel gear is fixed thereto;
Conversion means for converting the rotational motion of the driven rotational shaft into the work motion of the work tool at the tip thereof;
A sleeve that is axially movable and non-rotatable on the drive rotation shaft;
A pair of drive bevel gears that are arranged concentrically with the drive rotation shaft, have a one-way clutch attached to the inner peripheral surface, and are always meshed with the driven bevel gear;
A sleeve position switching tool for moving the sleeve in the axial direction of the drive rotation shaft,
The sleeve engages with the one-way clutch of the first drive bevel gear of the pair of drive bevel gears and moves to the pair of drive bevel gears when the sleeve is moved to the normal rotation designated position by the sleeve position switching tool. The second drive bevel gear is disengaged from the one-way clutch, and the reciprocating swing of the handle is converted into the forward rotation of the driven rotary shaft,
When moved to the reverse rotation designated position, the engagement of the first drive bevel gear with the one-way clutch is disengaged and the second drive bevel gear is engaged with the one-way clutch, thereby reciprocating the handle. To the reverse rotation of the driven rotation shaft,
When moved to a lock designated position intermediate between the forward rotation designated position and the reverse rotation designated position, both the one-way clutch of the first drive bevel gear and the one-way clutch of the second drive bevel gear are engaged. A handle-operated working device characterized by being configured so that the rotation of the driven rotating shaft is locked. A support box;
A drive rotating shaft supported in a support box so as to be freely rotatable in one direction;
A driven rotary shaft having a base end portion located in the support box, to which a driven bevel gear is fixed, and arranged in a direction perpendicular to the drive rotary shaft;
A sleeve that is axially movable and non-rotatable on the drive rotation shaft;
A pair of drive bevel gears that are arranged concentrically with the drive rotation shaft, have a one-way clutch attached to the inner peripheral surface, and are always meshed with the driven bevel gear;
A sleeve position switching tool for moving the sleeve in the axial direction of the drive rotation shaft,
The sleeve engages with the one-way clutch of the first drive bevel gear of the pair of drive bevel gears and moves to the pair of drive bevel gears when the sleeve is moved to the normal rotation designated position by the sleeve position switching tool. The second drive bevel gear is disengaged from the one-way clutch, and the one-way rotation of the drive rotation shaft is converted into the positive rotation of the driven rotation shaft;
When moved to the reverse rotation designated position, the engagement of the first drive bevel gear with the one-way clutch is disengaged and the second drive bevel gear is engaged with the one-way clutch. Convert unidirectional rotation to reverse rotation of the driven rotation shaft,
When moved to a lock designated position intermediate between the forward rotation designated position and the reverse rotation designated position, both the one-way clutch of the first drive bevel gear and the one-way clutch of the second drive bevel gear are engaged. The rotation transmission device is configured such that the rotation of the driven rotation shaft is locked when the rotation is performed.

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