JP2010058970A - Roller with built-in motor and conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a roller with built-in motor, facilitating the assembling of a roller conveyor. <P>SOLUTION: The roller 3 with built-in motor includes a roller body 11 of a cylindrical shape, in which a motor 12 and a reducer 13 are built-in. The roller 3 with built-in motor has fixed shafts 20 and 21 protruding out of both ends of the roller body 11. One fixed shaft 20 has a hollow shape, in which a fixed-side connector piece 25 is built-in. A free-side connector piece 33 is connected with the fixed-side connector piece 25 in the roller 3 with built-in motor. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a motor built-in roller in which a motor is built in a roller body. The present invention also relates to a conveyor device using a roller with a built-in motor.

A motor built-in roller is known as a component of a roller conveyor device. As disclosed in Patent Document 1, the motor built-in roller has a motor and a speed reducer built in the roller body, and the outer roller body rotates by driving the internal motor.
FIG. 18 is a cross-sectional view of the motor built-in roller disclosed in Patent Document 1.
In the known motor built-in roller 100, a lid member 102 is provided at both ends of a roller body 101, and fixed shafts 105 and 106 protrude from the lid member 102. One fixed shaft 105 has a hollow shape, and an electric cable 107 is inserted into the fixed shaft 105, and power is supplied to the motor 110 built in the roller body 101 via the electric cable 107.
In some cases, a connector piece 111 is provided at the tip of the electric cable 107 for the purpose of facilitating electric wiring. Patent Document 1 described above discloses a configuration example in which the connector piece 111 is provided at the tip of the electric cable 107.

The roller conveyor device includes a plurality of motor built-in rollers and a plurality of free rollers attached in parallel to the frame.
The frame of the roller conveyor device is obtained by arranging frame pieces made of, for example, grooved steel in two rows in parallel.
The plurality of motor built-in rollers and the plurality of free rollers are all attached in parallel between the two frames.
More specifically, one fixed shaft 105 of the motor built-in roller is fixed to one frame piece, and the other fixed shaft 106 of the motor built-in roller is fixed to the other frame piece.
JP 2004-18184 A

By the way, as a part for a roller conveyor, a frame piece having a fixed shaft mounting hole drilled in advance is commercially available.
Commercially available frame pieces are made of lightweight channel steel or channel steel. A number of holes are drilled in the wall surface of the light-duty steel having the largest cross-sectional area. All of the holes that are perforated have a constant size, for example, a diameter of 8 mm, and are arranged in a line at regular intervals.

  When a roller conveyor is manufactured using the above-described commercially available frame pieces, the two frame pieces are joined with a gap therebetween, and a fixed shaft is inserted into the above-described hole, and a motor built-in roller is attached.

However, there is a problem in that it is difficult to attach a roller with a built-in motor in which a connector piece 111 is provided at the tip of an electric cable 107 as shown in FIG. is there.
That is, a commercially available frame piece is previously provided with a hole of a certain size. This hole is large enough to pass through the fixed shafts 105 and 106 of the motor built-in roller, but the connector piece 111 attached to the tip of the electric cable 107 is generally fixed shafts 105 and 106 of the motor built-in roller 100. It may be larger than the hole provided in the commercially available frame piece. Further, even if the connector piece 111 is smaller than the hole provided in the frame piece, there is a dissatisfaction that it is difficult to insert the connector piece 111 and it takes time to assemble the roller conveyor device.
In other words, it is difficult for the roller with a built-in motor of the prior art to bring out the power feeding part (connector piece 111) for feeding power to the internal motor outside the area surrounded by the frame pieces, and it takes time and labor to assemble the conveyor device. There is a drawback of having.

  Therefore, the present invention focuses on the above-described problems of the prior art, and an object thereof is to provide a motor built-in roller that can easily assemble a roller conveyor device.

  According to a first aspect of the present invention for solving the above-described problem, the fixed shaft protrudes from the roller body, and a motor is built in the roller body. By rotating the motor, the roller body becomes the fixed shaft. In the motor built-in roller that rotates relative to the fixed shaft, the fixed shaft is hollow, a fixed connector piece is provided in the fixed shaft or at the fixed shaft end, and a separately prepared free connector piece is connected to the fixed connector. A roller with a built-in motor, characterized in that the inside and outside of the roller body can be electrically connected.

  In the roller with a built-in motor of the present invention, a fixed-side connector piece is provided in the fixed shaft or at the fixed shaft end. Therefore, if even the fixed shaft of the motor built-in roller can be passed through the hole of the frame, the free side connector piece can be connected to the fixed side connector piece of the fixed shaft to supply power to the internal motor.

  The invention according to claim 2 includes a free-side connector piece, the fixed-side connector piece is provided in the fixed shaft, a shaft-side engaging portion is formed on the inner surface of the fixed shaft, and the outer periphery of the free-side connector piece is 2. The motor according to claim 1, wherein a connector-side engaging portion is provided, and the free-side connector piece is attached to the fixed shaft by engaging the shaft-side engaging portion and the connector-side engaging portion. Built-in roller.

In the motor built-in roller of the present invention, the shaft side engaging portion is formed on the inner surface of the fixed shaft. For example, an internal screw can be used for the shaft side engaging portion.
On the other hand, a connector-side engagement portion is provided on the outer periphery of the free-side connector piece. For example, an external screw can be used for the connector-side engaging portion.
In the motor built-in roller according to the present invention, since the free-side connector piece can be attached to the fixed shaft by engaging the above-described shaft-side engaging portion and connector-side engaging portion, the connected connector is unintentionally disconnected. There is nothing.
Further, in the motor built-in roller of the present invention, a connector-side engagement portion is provided on the outer periphery of the free-side connector piece, and a shaft-side engagement portion is provided on the inner surface of the fixed shaft so that both are engaged. The outer shape of the free-side connector piece is small. Therefore, for example, the shaft end of the fixed shaft of the roller with a built-in motor can be stored inside the frame pieces, and the free side connector piece can be inserted into the hole of the frame from the outside of the frame to connect both connectors.

  The invention described in claim 3 is characterized in that the motor built in the roller body has a plurality of coils, and a part or all of a circuit for supplying current to the coils is built in the roller body. The motor built-in roller according to claim 1 or 2.

The motor built-in roller of the present invention is a motor built-in roller having a structure called a built-in base, and a part or all of a circuit for supplying a current to the coil is built in the roller body. For example, in the case of a flashless motor, a current is sequentially supplied to each coil in order to generate a rotating magnetic field and an alternating magnetic field therein. For example, when there are an A coil, a B coil, and a C coil inside, first, a current is supplied only to the A coil, then a current is supplied only to the B coil, then a current is supplied only to the C coil, and then A It is necessary to switch the energization circuit so that current flows only through the coil. In the motor built-in roller of the present invention, for example, this switching circuit is built in the roller body.
In the roller with a built-in motor according to the present invention, a part or all of the circuit for supplying current to the coil is built in the roller body, so that the number of power lines and signal lines for conducting the inside and outside of the roller body is small. Therefore, the fixed shaft does not get crowded.

  According to a fourth aspect of the present invention, there is provided a motor built-in roller in which a fixed shaft projects from a roller body, a motor is built in the roller body, and the roller body rotates with respect to the fixed shaft by rotating the motor; And a frame having frame pieces arranged in parallel, and a plurality of rollers including the motor built-in roller are attached between the frame pieces. It is a motor built-in roller in any one of (4), It is a conveyor apparatus characterized by the above-mentioned.

  The present invention is a conveyor device using the above-described roller with a built-in motor. The conveyor device of the present invention is easy to assemble.

  According to the fifth aspect of the present invention, an opening is provided in the frame piece, and the fixed shaft in which the fixed shaft of the motor built-in roller is inserted into the opening protrudes to the outside of the frame piece. The conveyor device according to claim 4, wherein the pieces are inserted.

  In the conveyor device according to the present invention, since the feeding portion and the like can be taken out of the frame piece by projecting the fixed shaft to the outside of the frame piece, the assembly is easy.

Conversely, power may be supplied by leaving the fixed shaft inside the frame piece and inserting the free-side connector piece into the hole of the frame piece.
That is, an opening is provided in the frame piece, the shaft end of the fixed shaft of the motor built-in roller is in the vicinity of the opening, and the free side connector piece is inserted into the opening and connected to the fixed side connector of the motor built-in roller. Also good.

  In the motor built-in roller of the present invention, since the power feeding part for feeding power to the internal motor is located on the fixed shaft, it is easy to take the power feeding part out of the area surrounded by the frame pieces. There is an effect that the work is easy.

Embodiments of the present invention will be further described below.
FIG. 1 is a conveyor device according to an embodiment of the present invention, in which (a) is a front view thereof and (b) is a plan view thereof.
A conveyor apparatus 1 shown in FIG. 1 is a roller conveyor apparatus in which a large number of rollers 3 and 5 and a load sensor 4 are attached to a frame 2.
In this embodiment, the frame 2 is made by combining lightweight grooved steel. That is, the frame 2 is formed by arranging frame pieces 6 and 7 made of lightweight grooved steel in parallel and connecting them with a connecting member (not shown).

FIG. 2 is a perspective view of a frame piece employed in the conveyor apparatus of FIG.
As described above, the frame pieces 6 and 7 employed in the present embodiment are made of lightweight channel steel, and are provided with a number of holes 8 in advance. The cross-sectional shapes of the holes 8 are the same and circular, and all have the same diameter. The hole 8 is a surface having the largest area among the three sides constituting the lightweight channel steel, and is provided at a position far from the center. The holes 8 are provided in a row and at equal intervals.

In the conveyor apparatus 1 of the present embodiment, a motor built-in roller 3 and a free roller 5 are attached to the frame 2 described above, and these are connected by a belt (not shown) and interlocked.
Here, the motor built-in roller 3 employed in the present embodiment has characteristics that are not present in the past, and will be described in detail.
FIG. 3 is a front view of the motor built-in roller according to the embodiment of the present invention. FIG. 4 is a perspective view of the end of the motor built-in roller and the free-side connector piece of FIG. FIG. 5 is a cross-sectional view of the end portion of the motor built-in roller of FIG. 3 and the free-side connector piece, showing a state in which both are separated. FIG. 6 is a cross-sectional view of the end portion of the motor built-in roller and the free-side connector piece of FIG. 3 and shows a state where both are joined. FIG. 7 is an exploded perspective view of an end portion of the motor built-in roller in FIG. 3. FIG. 8 is a circuit diagram of the motor built-in roller of FIG.

The motor built-in roller 3 has a cylindrical roller main body 11 and a motor 12 and a speed reducer 13 are built in the roller main body 11 in the same manner as a known one.
Further, the motor built-in roller 3 employed in the present embodiment is referred to as a built-in board type, and a circuit board 15 is built therein. The circuit board 15 has a built-in switching circuit and includes a part of a circuit for supplying current to the coil.
That is, the motor employed in the present embodiment is a flushless motor, and has three coils W1, W2, and W3 as shown in the circuit diagram. In addition, Hall elements H1, H2, and H3 for detecting the rotational position of the permanent magnet as a rotor are provided.
In order to generate a rotating magnetic field inside the coils W1, W2, and W3, a switching circuit that sequentially supplies current to the coils W1, W2, and W3 is provided. The switching circuit is housed in the circuit board 15. ing.

  In the motor built-in roller 3, fixed shafts 20 and 21 protrude from both ends of the roller body 11. More specifically, in the motor built-in roller 3, lid members 16 and 17 are attached to both ends of the roller body 11, and the fixed shafts 20 and 21 protrude from the lid members 16 and 17. A bearing 22 is interposed between the fixed shafts 20 and 21 and the roller body 11, and the roller body 11 rotates relative to the fixed shafts 20 and 21. One fixed shaft 20 is chamfered on one surface and has a “D” cross-sectional shape. In this embodiment locking mode, this chamfered portion functions as the engaging portion 23.

In the motor built-in roller 3, as shown in FIGS. 4, 5, and 6, one fixed shaft 20 has a hollow shape, and a fixed connector piece 25 is incorporated therein.
The fixed connector piece 25 is a female connector having five holes as shown in the figure, and the outer shape is a cylindrical shape having a flange 26 at the center.
On the other hand, the fixed shaft 20 has a hole 28 communicating in the axial direction and is hollow inside. The inner diameter of the fixed shaft 20 is large on the protruding side and small on the roller body 11 side. That is, a stepped portion 27 is formed inside the fixed shaft 20.
Further, an inner screw (shaft side engaging portion) 24 is formed on the inner surface of the fixed shaft 20 on the protruding side (large diameter side).

The fixed connector piece 25 is inserted into the hole 28 in the fixed shaft 20 together with the sleeve 30. That is, the sleeve 30 is attached to the outer periphery of the rear end side (the side without the pin hole) of the fixed connector piece 25 and is inserted into the hole 28 in the fixed shaft 20 with the pin hole side facing outward. In the hole 28 of the fixed shaft 20, one end surface of the sleeve 30 is in contact with the stepped portion 27 of the hole 28, and the flange 26 of the fixed connector piece 25 is in contact with the other end surface of the sleeve 30. Therefore, the flange 26 of the fixed connector piece 25 is in contact with the stepped portion 27 of the hole 28 through the sleeve 30 and is positioned in the axial direction.
Further, an adhesive (not shown) is filled between the fixed connector piece 25, the hole 28 in the fixed shaft 20, and the sleeve 30, so that the fixed connector piece 25 is not detached outside.

  Inside the roller body 11, a lead wire 31 extending from the rear end of the fixed connector piece 25 is connected to the circuit board 15, and power is supplied from the circuit board 15 to the motor 12. In this embodiment, since the motor built-in roller 3 is a built-in substrate type, the number of lead wires is five. However, when the present invention is applied to a motor built-in roller having a structure without a built-in substrate, It is necessary to increase the number of lines, and it is necessary to increase the number of pin holes of the fixed connector piece 25 accordingly.

In the motor built-in roller 3 of this embodiment, the free-side connector piece 33 is connected to the fixed-side connector piece 25 described above.
The free side connector piece 33 is a 5-pin male side connector.
As shown in FIGS. 5 and 6, the free-side connector piece 33 includes a connector main body 35 and a screw ring 36.
The screw ring 36 is provided on the outer peripheral portion of the connector main body 35 and is rotatable with respect to the connector main body 35, but moves integrally in the axial direction.
The screw ring 36 includes a screw forming portion 37 and a knob portion 38, and the knob portion 38 has a diameter larger than that of the screw forming portion 37.
An outer screw (connector side engaging portion) is formed on the outer periphery of the screw forming portion 37. The outer diameter of the knob 38 is equal to the outer diameter of the fixed shaft 20, and the outer peripheral surface is knurled.

In the motor built-in roller 3 of this embodiment, the free-side connector piece 33 and the fixed-side connector piece 25 can be connected by inserting the connector main body 35 of the free-side connector piece 33 into the hole 28 of the fixed shaft 20. .
When the screw ring 36 is rotated with the connector main body 35 of the free-side connector piece 33 inserted into the hole 28 of the fixed shaft 20, an external screw (male screw) provided on the screw ring 36 is inserted into the hole 28 of the fixed shaft 20. It engages with an internal screw 24 provided on the. Here, the screw ring 36 is rotatable with respect to the connector main body 35, but moves integrally in the axial direction, so that the external screw (male screw) of the screw ring 36 is engaged with the internal screw 24 of the fixed shaft 20. When the screw ring 36 is rotated in this state, the free-side connector piece 33 moves to the hole 28 side of the fixed shaft 20. Further, since the free-side connector piece 33 is screw-engaged with the fixed shaft 20, the free-side connector piece 33 will not be detached from the fixed shaft 20.

In the present embodiment, the fixed connector piece 25 is housed in the hole 28 of the fixed shaft 20 as shown in FIG. 4, but the fixed connector piece 25 may be provided on the end surface of the fixed shaft 20.
9 and 10 are perspective views of an end portion of a motor built-in roller and a free-side connector piece according to another embodiment of the present invention.
In the motor built-in roller shown in FIG. 9, the surface of the main body portion of the fixed shaft 20 and the fixed-side connector piece 25 are on the same surface. In the motor built-in roller shown in FIG. 10, the fixed-side connector piece 25 protrudes from the surface of the main body portion of the fixed shaft 20.

  Next, the mounting structure of the motor built-in roller 3 to the frame 2 will be described. FIG. 11 is a perspective view of a main part of the conveyor device according to the embodiment of the present invention, and shows a connecting portion between the motor built-in roller and the frame piece. FIG. 12 is an exploded perspective view of the connecting portion between the motor built-in roller and the frame piece, and the inside of the circle is an exploded perspective view of the connecting member. FIG. 13: is a principal part perspective view of the conveyor apparatus of embodiment of this invention, and shows the state which observed the connection part of a roller with a built-in motor and a frame piece from the back surface side. 14 is a cross-sectional perspective view taken along line AA in FIG. Fig.15 (a) is a BB cross-sectional perspective view of FIG. 11, and the same (b) is an enlarged view of the vicinity of a connection member.

In the present embodiment, the motor built-in roller 3 is attached to the frame 2 using a motor built-in roller mounting device (hereinafter simply referred to as a mounting device) 40.
As shown in FIG. 12, the attachment device 40 includes a rotation prevention member 41, a controller installation base 43, a connection member 45, and a comb-like member 49.
This will be sequentially described below. In the following description, the vertical relationship and the horizontal / vertical relationship are based on the state where the conveyor device 1 is installed on a plane.
The rotation prevention member 41 includes a resin main body 46 and a metal reinforcing member 47.
As shown in FIG. 12, the main body 46 has an oval shape when viewed from the front. However, the rotation preventing member 41 has a shape in which the central portion of the side corresponding to the lower side is cut with reference to the posture attached to the conveyor device 1. That is, the seating surface portion 44 is formed in the central portion of the side corresponding to the lower side.

The rotation preventing member 41 is provided with three openings. The three openings are arranged on a straight line, and the heights of the centers coincide with each other. The distance between the centers of the openings is equal to the interval between the holes 8 of the frame piece 7.
The central opening 48 is circular, and the outer diameter thereof is slightly larger than the fixed shaft 20 of the motor built-in roller 3 described above.
The back side of the central opening 48 is heavily stealed, and a reinforcing member 47 is fitted as will be described later. That is, a hole 50 is provided on the back side of the opening 48. The front view shape of the hole 50 is a shape combining a straight line and an arc, and the upper and lower sides extending in the horizontal direction on the basis of the mounting posture are substantially linear. On the other hand, the side on the side extending in the vertical direction has an arc shape. Further, as described above, since the seat surface portion 44 is formed on the lower side of the rotation preventing member 41, the arc-shaped line on the side of the side surface of the hole 50 is further downward than the upper and lower sides extending in the horizontal direction. Has been extended.

The main body 46 of the rotation preventing member 41 is provided with two openings at equal intervals with the above-described central opening 48 interposed therebetween. The two openings function as attachment openings 51.
The mounting opening 51 is much larger and has a different shape compared to the central opening 48 described above. That is, the mounting opening 51 has an elliptical shape close to a square as shown in the figure. The diameter of the circumscribed circle of the mounting opening 51 is about 1.5 to 4 times that of the central opening 48, and the recommended size is 2 to 3 times that of the central opening 48.
The inside of the mounting opening 51 is stepped as shown in FIG. 15, and a contact portion 59 is formed.

The reinforcing member 47 is made of metal as described above, and its shape is equal to the hole 50 provided on the back surface side of the rotation preventing member 41 described above.
That is, the shape of the reinforcing member 47 viewed from the front is a combination of a straight line and an arc, and the upper and lower sides 47a and 47b extending in the horizontal direction on the basis of the mounting posture are substantially linear. On the other hand, the sides 47c and 47d on the side surface extending in the vertical direction have an arc shape. In addition, the arc-shaped line on the side of the reinforcing member 47 extends further downward than the upper and lower sides 47ab extending in the horizontal direction.
In the center of the reinforcing member 47, a hole as the engaged portion 52 is provided. The shape of the hole serving as the engaged portion 52 is equal to the cross-sectional shape of the fixed shaft 20 described above, and when the fixed shaft 20 is inserted, relative rotation between the two is prevented.
The thickness of the reinforcing member 47 is equal to the depth of the hole 50 provided on the back surface side of the rotation preventing member 41 described above.

The rotation preventing member 41 is formed by fitting a metal reinforcing member 47 into the hole 50 of the resin main body 46 described above. As described above, the hole 50 and the reinforcing member 47 of the main body 46 have a distorted shape, and both have the same shape and are in a fitted state. Therefore, the reinforcing member 47 and the main body 46 rotate. It is integral with respect to the direction (the direction of rotation about the fixed shaft 20).
Further, the hole serving as the engaged portion 52 of the reinforcing member 47 and the central opening 48 at the center of the main body portion 46 communicate with each other.

Next, the connection member 45 will be described.
The connection member 45 includes a male screw member 55, a sleeve (shaft portion) 56, a washer (locking portion) 57, and a nut 58.
The male screw member 55 is a bolt having a columnar head portion 55a. The male screw member 55 is provided with two slits 55b and 55c on the side surface. The slits 55 b and 55 c both extend in a direction perpendicular to the axial direction of the male screw member 55. The slits 55b and 55c are located symmetrically with respect to the center of the male screw member 55 and are parallel to each other.
The sleeve (shaft portion) 56 is attached to the outer periphery of the male screw member 55 and increases the outer diameter of the male screw member 55 to form a thick shaft portion. The outer diameter of the sleeve (shaft portion) 56 is larger than the round hole 64 of the controller mounting base 43 described later, and smaller than the minimum diameter portion of the mounting opening 51 described above.
Further, the length L1 of the sleeve (shaft portion) 56 is longer than the thickness L2 of the contact portion 59 in the mounting opening 51 of the rotation preventing member 41 as shown in FIG. In other words, the length L1 of the sleeve (shaft portion) 56 is longer than the length L2 between the back surface side of the rotation preventing member 41 and the contact portion 59.

Next, the controller installation base 43 will be described.
The controller installation base 43 is made by bending a steel plate material, and is basically a flat surface and partly cut and raised. Most of the controller mounting base 43 is flat on the front side and the back side, and a vertical wall portion 40bcd is provided on a part thereof.
That is, the controller installation base 43 is a plate having a substantially square shape, and there are two raised portions on the upper side with reference to the posture attached to the conveyor device 1. More specifically, two vertical wall portions 40b and 40c folded in the vertical direction from the main body portion 40a are provided on the upper side portion of the controller installation base 43. The positions of the vertical wall portions 40 b and 40 c are on both end sides of the controller installation base 43, and the widths thereof are both about one third of the lateral width of the controller installation base 43. In other words, vertical wall portions 40b and 40c are formed on the upper side portion of the controller installation base 43 so as to stand vertically except for about one third of the center.

Further, a vertical wall portion (projecting portion) 40d is provided at the center in the width direction of the controller mounting base 43 and at a position about one third from the top in the height direction. The vertical wall part (projection part) 40d is obtained by cutting a part of the main body part 40a into a "U" shape and vertically raising the part, and a substantially square opening 62 is formed on the upper part. ing. Round holes 64 are provided on both sides of the opening 62.
The positional relationship (interval) between the opening 62 and the round holes 64 on both sides thereof is equal to that of the center opening 48 and the mounting opening 51 of the rotation preventing member 41 described above.

  In the controller installation table 43, the upper side functions as the rotation prevention member holding unit 60 and the lower side functions as the controller installation unit 61. More specifically, a substantially rectangular region surrounded by the vertical wall portions 40b and 40c at the upper end and the vertical wall portion (projecting portion) 40d at the middle portion functions as the rotation prevention member holding portion 60, and the other regions are provided with a controller. The unit 61 functions.

  The comb-like member 49 is made of a steel plate, and is provided with notches 49a, 49b, and 49c at three locations. The central notch 49b has a size equivalent to the substantially square opening 62 of the controller mounting base 43 described above. The notches 49a and 49c on both sides are slit-shaped and have a narrow width. The width Wa of the notches 49a and 49c on both sides is equal to the interval Wb between the slits 55b and 55c provided on the head portion 55a of the male screw member 55 described above. The distance between the centers of the notches 49a, 49b, 49c is equal to the hole 8 of the frame piece 7.

The mounting tool 40 employed in the present embodiment has a controller installation base 43 as a center, a rotation prevention member 41 is installed on the rotation prevention member holding part 60, and a controller 63 is installed on the controller installation part 61. .
The rotation preventing member 41 is mounted in a substantially rectangular area surrounded by the vertical wall portions 40b and 40c at the upper end and the vertical wall portion (projecting portion) 40d at the intermediate portion, and the upper side is held by the vertical wall portions 40b and 40c. The lower surface side is supported by a vertical wall portion (projecting portion) 40d. Here, a seat surface portion 44 is provided on the lower surface side of the rotation preventing member 41, and a vertical wall portion (projecting portion) 40 d holds the seat surface portion 44 of the rotation preventing member 41.

Further, as described above, the controller 63 is installed in the controller installation unit 61. The controller 63 employed in this embodiment is called a zone controller, and exchanges information with the controller of the adjacent roller with built-in motor. Has the ability to do.
That is, one motor built-in roller is controlled by one controller, but the area where each motor built-in roller drives a driven roller or the like is considered as one zone, and it is detected whether there is a transported object in its own zone. The load sensor signal, the load sensor signal of the adjacent zone, the signal of whether or not the motor built-in roller of the adjacent zone is operating are input, and these signals are output to the controller of the adjacent zone and self The roller with a built-in motor is controlled so that these zones operate properly.
In the controller 63 employed in the present embodiment, a sensor input terminal 63a for inputting a signal of a stock sensor, an input / output terminal 63b for transmitting / receiving a signal to / from the controller on the right adjacent zone, and a signal to / from the controller on the left adjacent zone. It has an input / output terminal 63c for sending and receiving. An external input terminal 63d is also provided. The controller 63 further includes a power input terminal 63e and a motor built-in roller forward cable 68. A free-side connector piece 33 is provided at the tip of the motor built-in roller forward cable 68.

Next, the operation of this embodiment will be described by explaining the procedure for attaching the above-mentioned motor built-in roller 3 to the frame 2.
In the conveyor device 1 of the present embodiment, the motor built-in roller 3 is attached to the frame 2 via the attachment device 40.
In the present embodiment, the attachment device 40 is temporarily fixed to the frame 2 prior to the attachment of the motor built-in roller 3.

As described above, the frame pieces 7 employed in the present embodiment are provided with a large number of holes 8 in a line at equal intervals in advance.
In the present embodiment, three of these holes 8 are made into one hole group, and the attachment device 40 and the motor built-in roller 3 are attached using this hole group.
That is, the attachment tool 40 is temporarily fixed to the outside of the frame pieces 7 through the connection member 45 using the holes at both ends of the three holes 8. Since the frame piece 7 is a lightweight grooved steel and has a cross-sectional shape of “U”, the attachment device 40 is temporarily fixed in a region surrounded by this “U” shape.
Specifically, the flat surface portion on the back surface side of the controller mounting base 43 of the mounting tool 40 is pressed against the outer side surface of the frame piece 7. Here, the opening 62 provided on the controller mounting base 43 and the round holes 64 on both sides thereof are positioned so as to face the three consecutive holes 8 of the frame piece 7. As a result, the central opening 48 and the mounting opening 51 of the rotation preventing member 41 face the three consecutive holes 8 of the frame piece 7.

The male screw member 55 of the connection member 45 is inserted into the holes at both ends from the inside of the frame pieces 7 toward the outside of the frame 2, and is provided on the rotation prevention member 41 of the mounting device 40 provided on the outside of the frame pieces 7. Through the mounting opening 51. More specifically, the male screw member 55 passes through the round hole 64 of the attachment device 40 and communicates with the attachment opening 51.
As shown in FIG. 15, on the outside of the frame pieces 7, the male screw member 55 is covered with the sleeve 56, and the nut 58 is engaged with the male screw member 55 via a washer (locking portion) 57.

Further, inside the frame pieces 7, a comb-like member 49 is attached to the two connection members 45 as shown in FIG. 13. More specifically, the notches 49 a and 49 c on both sides of the comb-like member 49 are mounted between the slits 55 b and 55 c provided on the head portion 55 a of the male screw member 55. As described above, the width Wa of the notches 49a and 49c of the comb-like member 49 is equal to the interval Wb between the slits 55b and 55c provided in the head portion 55a of the male screw member 55. Therefore, the notches 49a and 49c are male screws. It fits into slits 55b and 55c provided in the head 55a of the member 55. Therefore, the male screw member 55 is integrated with the comb-like member 49 in the rotational direction.
Further, in this embodiment, since one comb-like member 49 is attached to two male screw members 55 provided at a distance, the comb-like member 49 cannot rotate, and as a result, the two male screw members 55 is prevented from rotating by the comb-like member 49.

  In this state, as shown in FIG. 14, the fixed shaft 20 of the motor built-in roller 3 is inserted into the central hole (the central hole in the hole group) 8 of the frame piece 7, and the fixed shaft 20 protrudes outside the frame piece 7. And inserted into the hole serving as the engaged portion 52 of the rotation preventing member 41 communicating through the round hole 64 of the controller installation base 43. Here, since the attachment device 40 is temporarily fixed to the frame piece 7 and the attachment device 40 can move freely, the fixed shaft 20 of the motor-integrated roller 3 is attached to the central hole (hole group) of the frame piece 7. It is easy to insert into the hole serving as the engaged portion 52 of the rotation preventing member 41 in the attachment device 40 through the center hole 8 in the middle.

After inserting the fixed shaft 20 of the motor built-in roller 3 into the frame piece 7 in this way, the nut 58 of the connection member 45 is tightened from the outside of the frame piece 7.
FIG. 15 is a cross-sectional view of the connection member 45 with the nut 58 tightened. In the conveyor apparatus 1 of this embodiment, as shown in FIG. 15, the connection member 45 is fixed to the frame piece 7 and does not press the rotation preventing member 41.
That is, in the conveyor apparatus 1 of the present embodiment, the connection member 45 has a male screw member 55 and a sleeve 56. Since the outer diameter of the sleeve (shaft part) 56 is larger than the round hole 64 of the controller installation base 43, one end of the sleeve (shaft part) 56 is in contact with the controller installation base 43. On the other hand, since the outer diameter of the sleeve (shaft portion) 56 is smaller than the minimum diameter portion of the mounting opening 51 of the rotation prevention member 41, the sleeve (shaft portion) 56 is restrained by the mounting opening 51 of the rotation prevention member 41. Instead, the sleeve (shaft portion) 56 freely moves in the mounting opening 51.
Furthermore, since the length L1 of the sleeve (shaft portion) 56 is longer than the length L2 between the back surface side of the rotation prevention member 41 and the contact portion 59, the washer (locking portion) 57 attached to the male screw member 55 is Only the other end side end surface of the sleeve (shaft portion) 56 is pressed, and the contact portion 59 of the rotation preventing member 41 is not pressed.
Accordingly, even if the nut 58 of the connection member 45 is tightened, the connection member 45 only presses the flat surface portion 39 on the back side of the controller installation base 43 against the side surface 7a of the frame piece 7, and the connection member 45 is connected to the controller installation base 43. And is fixed perpendicularly to the wall surface of the frame piece 7 so as not to press the rotation preventing member 41 at all.

Therefore, even if the nut 58 of the connection member 45 is tightened, the rotation preventing member 41 is loosely fitted to the frame piece 7 and has a degree of freedom.
16 and 17 are explanatory diagrams showing the degree of freedom of the rotation preventing member 41. FIG.
That is, the rotation prevention member 41 has a degree of freedom of about 2 mm in the vertical direction (full width of 4 mm) in the vertical axis direction, which is an arrow direction in FIG. Moreover, it has a degree of freedom of about 2 mm in the left-right direction (full width: 4 mm) in the left-right axis direction, which is the direction of the arrow in FIG. It has a degree of freedom of about 2 mm in the front-rear axis direction, which is the arrow direction in FIG. Further, as shown in FIG. 16D, the motor built-in roller shaft core has a degree of freedom of about 7 degrees (total width of 14 degrees).
That is, as described above, the rotation prevention member 41 has a degree of freedom in the front-rear axis direction, and the rotation prevention member 41 is attached to the frame 2 by the biaxial connection member 45 centering on the roller shaft core with a built-in motor. As shown in FIG. 17, when the rotation preventing member 41 on the side of one connecting member 45 is close to the frame 2 and the other is separated, the motor built-in roller shaft core is displaced from the regular shaft core in the swinging direction. Therefore, in this embodiment, as shown in FIG. 16D, there is also a degree of freedom in the swinging direction of the motor built-in roller shaft.

That is, in the conveyor device 1 according to the present embodiment, the three consecutive holes out of the holes 8 of the frame piece 7 form a hole group, and the connecting member 45 is fastened to the holes 8 at both ends by the nuts 58. Is fixed. A washer (locking portion) 57 is provided on the distal end side of the sleeve (shaft portion) 56 of the connection member 45.
On the other hand, on the rotation prevention member 41 side, there are mounting openings 51 at positions facing the holes on both ends of the hole group described above, and a washer (locking portion) 57 of the connection member 45 is provided on this end face. There is an abutting portion 59 that can abut.
In this embodiment, the sleeve (shaft portion) 56 of the connection member 45 is inserted into the mounting opening 51 of the rotation preventing member 41, and the diameter of the mounting opening 51 is 4 mm larger than the diameter of the sleeve (shaft portion) 56. The rotation prevention member 41 has a degree of freedom of 4 mm with respect to the frame piece 7 in the vertical axis direction and the horizontal axis direction, respectively.
Further, since the position of the washer (locking portion) 57 of the connection member 45 is 2 mm away from the position of the contact portion 59 when the rotation prevention member 41 is pressed against the frame 2 side, the rotation prevention member 41 is a frame piece. 7 has a degree of freedom of 2 mm in the front-rear axis direction, and further has a degree of freedom of 14 degrees in the direction of rotation of the roller shaft core with a built-in motor.

  For this reason, the conveyor device 1 according to the present embodiment is less susceptible to stress on the motor built-in roller 3 even when the axis of the hole 8 of the frame 2 is slightly displaced, and is less likely to fail. There is no excessive increase in power consumption.

  When the fixing operation of the motor built-in roller 3 to the frame 2 is completed, the inside and outside of the roller body 11 of the motor built-in roller 3 are electrically connected. In the present embodiment, the free side connector piece 33 is provided at the tip of the motor built-in roller forward cable 68 provided in the controller 63, and the free side connector piece 33 is fixed in the fixed shaft 20 of the motor built-in roller. The conveyor device 1 is completed by mounting on the side connector piece 25.

When the motor built-in roller 3 is energized, the internal motor 12 rotates and the roller body 11 rotates. The reaction force of rotation is applied to the fixed shaft 20 and is further loaded on the rotation preventing member 41 by the engagement of the engaging portion 23 and the engaged portion 52. Here, in the present embodiment, since the engaged portion 52 of the rotation preventing member 41 is made of the metal reinforcing member 47, the engaged portion 52 is not broken or deformed.
Further, the rotation preventing member 41 is held by the vertical wall portions 40b and 40c of the controller installation base 43 and the intermediate vertical wall portion (projecting portion) 40d, but the vertical wall portions 40b and 40c and the intermediate vertical wall portion. There is a metal reinforcing member 47 inside the portion held by the (projecting portion) 40d, and the rigidity is high. Therefore, the rotation preventing member 41 is not twisted.
Further, the mounting opening 51 of the rotation preventing member 41 is made of resin and has excellent slidability. Therefore, the rotation preventing member 41 has a degree of freedom after being fixed and does not apply stress to the motor built-in roller.

  In the conveyor device 1 according to the present embodiment, each roller is provided in a direction perpendicular to the frame piece 7, but the rotation prevention member 41 according to the present embodiment has a high degree of freedom in the swinging direction. It is also possible to intentionally attach each roller to the piece 7.

  In the conveyor apparatus 1 of this embodiment, the rotation prevention member 41 was attached to the controller installation base 43, and the structure which can be attached to the controller installation base 43 simultaneously with fixation of the rotation prevention member 41 was employ | adopted. However, the present invention is not limited to this configuration, and the rotation preventing member 41 may be attached to the frame piece 7 alone.

  In the present embodiment, the three consecutive holes 8 of the frame piece 7 are used as one hole group, and the rotation prevention member 41 is attached facing the three consecutive holes 8. The above holes may be a hole group. However, it is desirable that the number of holes 8 constituting the hole group is an odd number, and it is recommended that the connecting member 45 be attached to the holes at both ends.

It is the conveyor apparatus of embodiment of this invention, (a) is the front view, (b) is the top view. It is a perspective view of the frame piece employ | adopted with the conveyor apparatus of FIG. It is a front view of the roller with a built-in motor of the embodiment of the present invention. It is a perspective view of the edge part of the motor built-in roller of FIG. 3, and a free side connector piece. It is sectional drawing of the edge part of the motor built-in roller of FIG. 3, and a free side connector piece, and both show the state which left | separated. It is sectional drawing of the edge part of a motor built-in roller of FIG. 3, and a free side connector piece, and shows both the states joined. It is a disassembled perspective view of the edge part of the roller with a built-in motor of FIG. It is a circuit diagram of the roller with a built-in motor of FIG. It is a perspective view of the edge part of a motor built-in roller in other embodiment of this invention, and a free side connector piece. It is a perspective view of the edge part of a motor built-in roller and free side connector piece in other embodiment of this invention. It is a principal part perspective view of the conveyor apparatus of embodiment of this invention, and shows the connection part of a motor built-in roller and a frame piece. It is a disassembled perspective view in the connection part of a roller with a built-in motor and a frame piece, and the inside of a circle is an exploded perspective view of a connection member. It is a principal part perspective view of the conveyor apparatus of embodiment of this invention, and shows the state which observed the connection part of a motor built-in roller and a frame piece from the back surface side. It is an AA cross-section perspective view of FIG. Fig.15 (a) is a BB cross-sectional perspective view of FIG. 11, and the same (b) is an enlarged view of the vicinity of a connection member. It is explanatory drawing which shows the freedom degree of the rotation prevention member 41. FIG. It is explanatory drawing which shows the freedom degree of the rotation prevention member 41. FIG. It is sectional drawing of the roller with a built-in motor disclosed by patent document 1. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Conveyor apparatus 2 Frame 3 Motor built-in roller 6,7 Frame piece 7a Side surface 8 Hole 11 Roller main body 12 Motor 15 Circuit board | substrates 20 and 21 Fixed shaft 23 Engagement part 24 Internal screw (Axial side engagement part)
25 Fixed-side connector piece 26 Flange 28 Hole 30 Sleeve 33 Free-side connector piece 35 Connector body 36 Screw ring 37 Screw forming portion (connector-side engaging portion)
39 Plane part W1, W2, W3 Coil

Claims (5)

  A fixed shaft protrudes from the roller body, a motor is built in the roller body, and the roller body rotates with respect to the fixed shaft by rotating the motor. The fixed shaft is hollow and fixed. A motor characterized in that a fixed connector piece is provided in the shaft or at the fixed shaft end, and the inside and outside of the roller body can be electrically connected by connecting a separately prepared free connector piece to the fixed connector. Built-in roller.   Including a free-side connector piece, the fixed-side connector piece is provided in the fixed shaft, a shaft-side engaging portion is formed on the inner surface of the fixed shaft, and a connector-side engaging portion is provided on the outer periphery of the free-side connector piece. The roller with a built-in motor according to claim 1, wherein the shaft-side engaging portion and the connector-side engaging portion are engaged to attach a free-side connector piece to the fixed shaft.   The motor built in the roller body has a plurality of coils, and a part or all of a circuit for supplying current to the coils is built in the roller body. Motor built-in roller.   A fixed shaft protrudes from the roller body, a motor is built in the roller body, and the roller body rotates with respect to the fixed shaft by rotating the motor, and a frame piece arranged in parallel. A motor built-in roller according to any one of claims 1 to 3, wherein a plurality of rollers including the motor built-in roller are attached between the frame pieces. Conveyor device characterized by being.   The frame piece is provided with an opening, the fixed shaft in which the fixed shaft of the motor built-in roller is inserted through the opening protrudes outside the frame piece, and the free-side connector piece is inserted outside the frame piece. The conveyor device according to claim 4.

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