JP2009092125A - Expansion mechanism for actuator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an expansion mechanism for an actuator expandable by driving an expansion sleeve by an expansion tool. <P>SOLUTION: This expansion mechanism for the actuator is characterized by including the expansion sleeve constituted by successively fitting some sleeves, a motor arranged inside the expansion sleeve and fixed to one end of the expansion sleeve, and the expansion tool which comprises X-shaped pivoting tools arranged inside the expansion sleeve, continuously connected to the respective sleeves, and constituted of a plurality of rods with these rods pivoted thereon two by two, in which these pivoting tools are pivoted in the same direction alongside, two end parts on one side of the rod of each pivoting tool are pivoted on two end parts of one side of the rod of an adjacent pivoting tool, respectively, and which can approach or move away from an object as the two end parts on one end thereof is driven by the motor. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a transmission device, and more particularly to an expansion / contraction mechanism for an actuator.

In the actuator described in US Pat. No. 6,880,416, one motor and three screw shafts are provided in a three-stage telescopic sleeve, and the three screw shafts are connected to the respective sleeves of the telescopic sleeve. The three-screw shaft is driven by the motor and is movable in the axial direction, whereby the telescopic sleeve is telescopic.

In addition, the actuator described in European Patent No. EP0982018 is provided with one motor, one screw shaft, and one pulley inside a three-stage telescopic sleeve, and the screw shaft is connected to the motor. Driven to rotate, the sleeve provided with the pulley is driven and moved, and the pulley can move another sleeve in a pulley manner, whereby the telescopic sleeve can be expanded and contracted.
US Pat. No. 6,880,416 European Patent No. EP 0982018

A main object of the present invention is to provide an expansion / contraction mechanism for an actuator that can be expanded and contracted by driving an expansion / contraction sleeve with an expansion / contraction tool.

The invention of the present application, which has been made to achieve the above object, includes an expansion sleeve configured by sequentially fitting a few sleeves, a motor provided inside the expansion sleeve, and fixed to one end of the expansion sleeve, The telescopic sleeves are connected to the sleeves and connected to each of the sleeves, and are composed of a plurality of rods. These rods are pivoted two by two to form an X-shaped pivoting tool. Are pivoted side by side in the same direction, and the two ends of one side of each pivot joint rod are pivoted to the two ends of one side of the adjacent pivot joint rod, respectively. And an expansion / contraction mechanism for an actuator, characterized in that the expansion / contraction mechanism includes an expansion / contraction tool that is driven by the motor and capable of approaching or leaving the object. It is a summary.

In the present invention, a slide passage is provided inside the outermost sleeve of the telescopic sleeve, the extending direction of the slide passage is perpendicular to the fitting direction of these sleeves, and the innermost sleeve is in the outermost layer. Two gears, one turning gear, and two racks are provided, the two gears are rotatably mounted inside the sleeve, and pulleys are provided coaxially with the two gears, respectively. The turning gear is rotatably mounted inside the sleeve and meshes with one of the gears, and the rack is slidably provided in the slide passage and meshes with the turning gear. The gear is engaged with the other gear and the turning gear, and the motor is fixed inside the outermost sleeve, and a pulley is assembled to the rotation shaft. Two belts are wound around the pulley, the two belts are wound around the two pulleys inside the sleeve that is the outermost layer, and the two ends at one end of the stretcher are the outermost layer. The gist is the telescopic mechanism for an actuator according to claim 1, wherein the actuator is pivotally attached to two racks of a certain sleeve.

In the invention of the present application, a long hole is opened in the innermost layer of the expansion sleeve, and the extension direction of the long hole is perpendicular to the fitting direction of these sleeves, and 2. The actuator expansion / contraction mechanism according to claim 1, wherein one of the end portions is inserted into a long hole formed in the innermost sleeve and connected to the sleeve. Yes.

In the invention of the present application, these rods are pivotally attached to each other with the center as a pivot point to form an X-shaped pivot attachment device according to claim 1, There is a summary.

In the invention of the present application, the expansion sleeve is configured by sequentially fitting three sleeves from the outside to the inside, and these rods of the expansion / contraction tool are pivotally attached to each other with the center as a pivot point. The X-shaped pivot attachment, wherein the pivot attachment facing the sleeve in the middle layer of the expansion / contraction instrument has a pivot point fixed to the sleeve by a shaft. The expansion and contraction mechanism for an actuator described in (1) is summarized.

According to the expansion / contraction mechanism for an actuator of the present invention, the expansion / contraction sleeve can be expanded and contracted by driving the expansion / contraction sleeve with an expansion / contraction tool.

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

Reference is first made to FIGS. The telescopic mechanism for an actuator of the present invention includes one telescopic sleeve 10, one motor 20, and one telescopic tool 30.

The telescopic sleeve 10 is configured by sequentially fitting three sleeves 11, 12, and 13 from the outside to the inside, and a slide passage 111 is provided inside the sleeve 11 which is the outermost layer, and the slide The extending direction of the passage 111 is perpendicular to the fitting direction of the sleeves 11, 12, and 13. Inside the sleeve 11 which is the outermost layer, there are two gears 112 and 113, one turning gear 114 and two racks. 15 and 116, the two gears 112 and 113 are rotatably mounted inside the sleeve 11, and pulleys 112AA and 113A are coaxially provided on the two gears 112 and 113, respectively. The turning gear 114 is pivotally mounted inside the sleeve 11 and meshed with the gear 113, and the racks 115 and 116 are connected to the rack 115. It is slidably provided in the ride passage 111 and meshes with the gear 112 and the turning gear 114, respectively, and a long hole 131 is formed in the sleeve 13 in the innermost layer of the telescopic sleeve 10, The extending direction of the long hole 131 is perpendicular to the fitting direction of the three sleeves 11, 12, 13.

The motor 20 is fixed inside the sleeve 11 which is the outermost layer of the telescopic sleeve 10, and one pulley 21 is assembled to the rotating shaft (not shown), and two belts A 1 and A 2 are attached to the pulley 21. The two belts A1 and A2 are wound around two pulleys 112A and 113A inside the sleeve 11 which is the outermost layer.

The stretchable tool 30 is provided inside the stretchable sleeve 10 and is connected to the sleeves 11, 12, and 13. The stretchable tool 30 includes a plurality of rods 31. Are pivotally attached to each other as a pivot point 311 to form an X-shaped pivot fixture 32. The pivot fixtures 32 are pivoted side by side in the same direction, and one of the rods 31 of each pivot fixture 32 is provided. The two end portions 312 on the side are pivotally attached to the two end portions 312 on one side of the rod 31 of the adjacent pivot attachment 32, and the two end portions 312A and 312B at one end thereof are the Through holes in which the shafts B1 and B2 of the two end portions 312C and 312D at the other end are respectively pivotally attached to two racks 115 and 116 provided inside the sleeve 11 in the outer layer, respectively. 31, the two end portions 312C and 312D are connected to the sleeve 13, and the pivot point 311 of the pivot member 32 facing the sleeve 12 of the expansion / contraction tool 30 is caused by the shaft B3. It is fixed to the sleeve 12.

When the motor 20 is operating, the pulley 21 is driven to operate the two belts A1 and A2, and the two belts A1 and A2 are interlocked with the two pulleys 112A and 113A. When the two gears 112 and 113 are rotating in synchronism with the two pulleys 112A and 113A, the rack 115 meshing with the gear 112 is driven to slide in the slide passage 111, and the gear 113 is the turning gear. Since the rack 116 is driven through 114 and the rack 116 slides in the slide passage 111, and the two belts A1 and A2 operate in the same direction, the two 112A and 113A and the two gears 112 and 113 are also in the same direction. However, the gear 112 is engaged with the rack 115, and the gear 113 is connected to the rack 11 via the turning gear 114. Since the meshed with actuation direction of the rack 115 and the rack 116 opposite to each other.

Accordingly, the motor 20 can drive the two racks 115 and 116 to move close to and away from the object, and can drive the two ends 312A and 312B of the telescopic tool 30 to target. The telescopic device 30 can be extended or shortened, and the telescopic device 30 is connected to the sleeve 12 by the shaft B3 and has two ends 312C. 312D are connected to the sleeve 13 so that the elastic sleeve 10 can be extended and contracted in synchronization with the elastic device 30, that is, when the two end portions 312A and 312B are close to each other, 30 extends synchronously, and when the two end portions 312A and 312B are separated from each other, the elastic sleeve 10 and the elastic device 30 are synchronous. To shrink.

It is an external appearance perspective view of the Example of this invention. It is the schematic which shows the inside of the Example of this invention. It is the schematic which shows the action | operation of the Example of this invention. It is the schematic which shows the expansion-contraction of the actuator of the Example of this invention.

Explanation of symbols

10 Telescopic sleeve 11, 12, 13 Sleeve 111 Slide passage 112, 113 Gear 112A, 113A Pulley 114 Turning gear 115, 116 Rack 131 Through hole 20 Motor 21 Pulley A1, A2 Belt 30 Telescopic tool 31 Rod 311 Pivoting point 312, 312A , 312B, 312C, 312D End 32 pivot attachment B1, B2, B3 shaft

Claims (5)

A telescopic sleeve constructed by sequentially fitting a few sleeves, a motor provided inside the telescopic sleeve, fixed to one end of the telescopic sleeve, and connected to the sleeves provided inside the telescopic sleeve. Are composed of a plurality of rods, two of which are pivotally attached to form an X-shaped pivot attachment, and these pivot attachments are pivotally mounted in the same direction, Two end portions on one side of the rods of the respective pivot attachments are respectively pivotally attached to two end portions on one side of the adjacent pivot attachment rods, and two end portions at one end thereof are connected to the motor. An expansion / contraction mechanism for an actuator, comprising: an expansion / contraction tool that is driven to be close to or away from an object. A slide passage is provided inside the outermost sleeve of the telescopic sleeve, the extending direction of the slide passage is perpendicular to the fitting direction of these sleeves, and two gears are provided inside the outermost sleeve. , One turning gear and two racks are provided, the two gears are rotatably mounted inside the sleeve, and pulleys are provided coaxially with the two gears, and the turning gear. Is rotatably mounted inside the sleeve and meshes with one of the gears, and the rack is slidably provided in the slide passage and meshes with the turning gear. The motor is fixed to the inside of the sleeve on the outermost layer, and a pulley is assembled to the rotating shaft thereof. Two belts are wound around the two belts, the two belts are wound around two pulleys inside the outermost sleeve, and the two ends at one end of the telescopic device are the outermost two sleeves. The expansion / contraction mechanism for an actuator according to claim 1, wherein the expansion / contraction mechanism is pivotally attached to each of the two racks. A long hole is formed in the innermost sleeve of the elastic sleeve, and the extension direction of the long hole is perpendicular to the fitting direction of these sleeves, and one of the two ends at the other end of the elastic tool. 2. The expansion / contraction mechanism for an actuator according to claim 1, wherein one is inserted into a long hole formed in the sleeve in the innermost layer and is connected to the sleeve. The expansion / contraction mechanism for an actuator according to claim 1, wherein the rods are pivotally attached to each other with a center at the center of each of the two rods to form an X-shaped pivot attachment. The stretchable sleeve is constructed by sequentially fitting three sleeves from the outside to the inside. These rods of the stretchable tool are pivotally attached to each other around the center of the two, and are X-shaped. 2. The actuator according to claim 1, wherein the pivot attachment constituting the pivot attachment and facing the sleeve in the middle layer of the expansion / contraction tool has a pivot attachment point fixed to the sleeve by a shaft. 3. Telescopic mechanism.