JPH0568942U - Roller for conveyor - Google Patents

Abstract

(57) [Summary] [Object] The present invention relates to a conveyor roller used in a roller conveyor, and the structure of the roller rotation supporting portion for attaching to the frame of the conveyor is simplified to reduce the number of parts and reduce the cost. The purpose is to plan. [Structure] A cylindrical outer cylinder 11, and a support shaft 74 protruding from both end surfaces of the outer cylinder to rotatably support the outer cylinder 11.
And a ring-shaped end housing 71 fitted to the inner peripheral surface of at least one end of the outer cylinder 11 and a inner peripheral surface of the end housing 71. Bearings 72 and 72, and a shaft hole 73a that is fitted into the inner peripheral surface of the bearing and opens at the outer end surface thereof
Bearing support shaft 73 having a bearing support shaft 74 is provided, and one support shaft 74 can be inserted into and removed from a shaft hole 73a of the bearing support shaft 73 and is axially moved from the bearing support shaft by a screw 75 in the axial direction. It is configured by being attached in a protruding state.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a conveyor roller used for a roller conveyor.

[0002]

[Prior Art]

 2. Description of the Related Art Conventionally, a motor roller (conveyor roller) having a built-in motor and driven to rotate is often used in a roller conveyor.

In a general motor roller, a cylindrical outer cylinder, a shaft provided at an axial center of the outer cylinder so as to be rotatable relative to the outer cylinder, and a primary winding for generating a rotating magnetic field are wound. It is composed of a stator fixed to the shaft, a rotor that is rotated by an electromagnetic force acting between the stator and the stator, and a planetary gear reducer that reduces the rotational force of the rotor and transmits it to the outer cylinder.

The outer cylinder is rotatably supported by support shafts projecting from both end surfaces of the outer cylinder, and these support shafts are connected to the shaft so as not to rotate relative to each other.

Further, one of the two support shafts is fixed so as not to move in the axial direction, but the other support shaft is a hole of a shaft member supporting the support shaft. It is fitted so as to be slidable in the axial direction and is attached while being urged outward in the axial direction by a compression spring.

In such a conventional motor roller, when it is attached to the shaft holes provided on the frames on both sides of the conveyor, the fixed support shaft is inserted into one shaft hole, and the other support shaft is pushed by a finger to move in the axial direction. After pushing it inward and inserting the outer tube between the frames, the finger pushing the support shaft was released and the support shaft was extended by a compression spring and inserted into the shaft hole.

[0007]

[Problems to be solved by the device]

 However, in the conventional motor roller described above, the structure for making the support shaft slidable in the axial direction and urging the supporting shaft in the axially outward direction is complicated, so that the number of parts and the number of assembling steps increase and the cost is reduced. It was a factor to raise.

In view of the above problems, an object of the present invention is to provide a conveyor roller which has a simple structure to be attached to a frame of a conveyor, has a small number of parts, and can reduce cost. There is.

[0009]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, a roller according to the invention of claim 1 has a cylindrical outer cylinder, and a support shaft projecting from both end surfaces of the outer cylinder in order to rotatably support the outer cylinder. A roller for conveyor, wherein at least one end of the outer cylinder has an annular end housing fitted into the inner peripheral surface thereof, and a bearing fitted into the inner peripheral surface of the end housing. A bearing receiving shaft having a shaft hole that is fitted into the inner peripheral surface of the bearing and opens at the outer end surface thereof, and at least one of the supporting shafts is a shaft hole of the bearing receiving shaft. It is configured so that it can be inserted into and removed from the bearing, and that it can be attached in a state of protruding axially from the bearing receiving shaft by an axial screw.

A roller according to a second aspect of the present invention is such that one end of the outer cylinder has an annular end housing fitted to an inner peripheral surface of the outer cylinder and an inner peripheral surface of the end housing. A bearing and a bearing receiving shaft having an axial hole that is fitted into the inner peripheral surface of the bearing and opens at the outer end surface thereof are provided, and one of the supporting shafts is inserted into the axial hole of the bearing receiving shaft. An annular driving end that is detachable and is attached by an axial screw so as to project from the bearing receiving shaft in the axial direction and that is fitted to the inner peripheral surface of the other end of the outer cylinder. A bearing integrally having a housing, a bearing fitted to the inner peripheral surface of the drive end housing, and another one of the support shafts fitted to the inner peripheral surface of the bearing and protruding from the end surface. The receiving support shaft and A shaft of a motor provided in the outer cylinder is connected to the bearing receiving and supporting shaft, and the rotational driving force of the outer rotor of the motor is transmitted to the driving end housing through a speed reducer. Is configured.

In the roller according to the invention of claim 3, the end housing has a claw portion that engages a side surface of the bearing when the bearing is fitted.

[0012]

[Action]

 One of the support shafts can be inserted into and removed from the shaft hole of the bearing receiving shaft. With this support shaft removed, the other support shaft is inserted into the shaft hole of the conveyor frame and the outer cylinder is inserted between the conveyor frames. After that, insert the removed support shaft into the shaft hole of the bearing receiving shaft from the outside of the conveyor frame through the shaft hole, and fix it with screws. Thereby, the conveyor roller is rotatably attached to the conveyor frame.

When the shaft hole of the conveyor frame and the support shaft are engaged with each other such that they cannot rotate relative to each other, and the electric power is supplied to the motor to rotate the motor, the rotational force of the outer rotor is reduced by the speed reducer to the outer cylinder. It is transmitted, and as a result, the outer cylinder rotates.

[0014]

【Example】

 1 is a sectional front view of a motor roller 1 according to the present invention, FIG. 2 is an enlarged sectional view of a central portion of the motor roller 1 of FIG. 1, FIG. 3 is a sectional view taken along the line III-III of FIG. 2, and FIG. 1 is an enlarged sectional view of the roller rotation supporting portion 70 of the motor roller 1, FIG. 5 is a left side view of the roller rotation supporting portion 70 of FIG. 4, and FIG. 6 is a line VI-VI arrow of the roller rotation supporting portion 70 of FIG. FIG. 7 is a cross-sectional view, and FIG. 7 is a connection diagram of the motor roller 1.

In FIG. 1, a motor roller 1 includes a cylindrical outer cylinder 11 made of metal, a shaft 12 provided at an axial center of the outer cylinder 11 so as to be rotatable relative to the outer cylinder 11, and a stator fixed to the shaft 12. 13, a rotor 14 that rotates by an electromagnetic force acting between the stator 13 and the stator 13, and a speed reducer 15 that reduces the rotational force of the rotor 14 and transmits the reduced rotational force to the outer cylinder 11.

A housing 51 and a B housing 71 made of synthetic resin are fitted into both ends of the outer cylinder 11, and the A housing 51 and the B housing 71 are respectively fitted with bearings 52 and 72, respectively. It is rotatably supported by support shafts 53 and 74 made of synthetic resin.

The shaft 12 includes a large-diameter first shaft 21 to which the above-described stator 13 is fixed, and a small-diameter second shaft 22 connected to the first shaft 21. Referring also to FIG. 2, the first shaft 21 is provided with a fitting hole 37a for connection at one end face thereof, and the first shaft 21 is communicated with the first hole 21a in the vicinity of the hole 37a. Is provided with a lateral hole 37b penetrating in the radial direction. The second shaft 22 is a metal pipe having a through hole 38 for inserting the lead wire RW, one end of which is fitted into the fitting hole 37a of the first shaft 21 and is fixed by an adhesive. ing.

The outer end of the first shaft 21 is fitted into the inner peripheral surface of the outer cylinder 11 and is bonded with an adhesive to a support housing 23 fixed to the outer cylinder 11 with a bearing 24 interposed therebetween. And is rotatably supported. The outer end of the second shaft 22 is fitted into the above-mentioned supporting shaft 53 and connected to the supporting shaft 53, whereby the entire shaft 12 is rotatably supported with respect to the outer cylinder 11. There is.

A flat portion is formed at the end of the second shaft 22, and the flat portion engages with the flat portion provided in the hole of the supporting shaft 53 so that they cannot rotate relative to each other. There is. Further, the support shaft 53 has a two-face width, which engages with the hole of the conveyor frame CF to prevent the support shaft 53 from rotating.

The stator 13 is formed by winding a three-phase winding 32 around a core 31, and when a three-phase power source is connected to the winding 32, a rotating magnetic field is generated around the winding 32. The rotor 14 is formed of a metal material into a cylindrical shape, and support caps 33, 33 are fitted into both ends of the rotor 14 and are integrally connected by screws (not shown). Each support cap 33 is rotatably supported by the first shaft 21 via a bearing 34.

Insulating rings 35 and 36 made of synthetic resin are attached to both ends of the core 31 by fitting them into the first shaft 21, and between the core 31 and the winding 32. Insulating paper or the like (not shown) is provided. A three-phase induction motor IM is composed of the stator 13, the rotor 14, and the like.

The speed reducer 15 is a publicly known type of planetary gear type connected in three stages, and each planetary gear meshes with internal teeth formed on the inner peripheral surface of the A housing 51. The sun gears of the stages are connected to rotate integrally with the support cap 33 described above, and the planetary gears of the third stage are connected to revolve integrally with the A housing 51 described above.

Referring also to FIG. 3, the insulating ring 35 described above has a reduced diameter portion 35a formed at its tip, and the diameter portion 35a has a diameter reduced in the circumferential direction. A step portion 35b composed of two semicircular surfaces having different shapes is formed.

A terminal plate 16 for connecting the ends of the windings 32 of the stator 13 is fitted and attached to the small-diameter portion 35 a of the insulating ring 35. On the near side, a ring-shaped winding protection member 17 made of sponge is attached with an adhesive.

The terminal board 16 includes a disk-shaped printed board 41 having a fitting hole of the same shape as the small-diameter portion 35 a, and six metal boards provided so as to project from one surface of the printed board 41. The engaging electrode 42.

The printed board 41 is provided with six holes 41a for inserting the engaging electrodes 42 at an angle of 60 degrees with each other in the circumferential direction. Of these six holes 41a, In the vicinity of every other three holes 41a provided, a hole 41b for inserting the lead wire RW and three wiring patterns 43 connecting the respective holes 41a and 41b are provided. Is provided. Further, the other three holes 41a provided every other one are connected to each other by the wiring pattern 44.

The engagement electrode 42 has a key-shaped engagement portion 42 a for hooking and engaging the winding 32 (see FIG. 2), and each engagement electrode 42 is formed on the printed circuit board 41. After being inserted into the six holes 41a, they are fixed by soldering.

Referring to FIGS. 4 to 6, B housing 71 has flat surface portions 71 b formed at three positions on the outer peripheral surface thereof, and is screwed in a radial direction from outer cylinder 11 at each flat surface portion 71 b. The headless headless screw 81 abuts, whereby the outer cylinder 11 and the B housing 71 are fixed to each other.

Further, the B housing 71 is formed with a cylindrical inner wall 71c into which the bearing 72 is fitted, and the inner wall 71c is cut out at six positions in the circumferential direction so that the inner wall 71c is located at an angular position of 120 degrees with respect to each other. Three claw portions 71a elastically biased inward in the radial direction are formed.

The bearing receiving shaft is made of synthetic resin, and has a shaft hole 73a opened at the outer end face at the center thereof. The shaft hole 73a has a cross-sectional shape of two circles cut out by chords parallel to each other, and its depth is smaller than the length of the support shaft 74. A screw hole 73b is provided at the bottom of the shaft hole 73a.

The support shaft 74 has the same sectional shape as the shaft hole 73a described above, and can be inserted into and removed from the shaft hole 73a. The support shaft 74 is provided with a through hole 74a in the center thereof, and a concave hole 74b having an inner diameter larger than that of the through hole 74a is provided on the outer end surface side. The supporting shaft 74 is fixed by screwing the screw 75 inserted into the through hole 74a into the screw hole 73b.

The B housing 71, the two bearings 72, the bearing receiving shaft 73, the supporting shaft 74, and the screw 75 constitute a roller rotation supporting portion 70. The method for assembling the roller rotation support portion 70 is as follows. That is, the bearings 72 and 72 are fitted into the outer peripheral surface of the bearing receiving shaft 73 from both ends thereof, and then the outer peripheral surface of the bearing 72 is fitted into the inner wall 71c of the B housing 71. At this time, the claws 71a are elastically pushed outward in the radial direction by the outer peripheral surface of the bearing 72, and when the bearings 72 are fully inserted, the three claws 71a come into contact with the side surfaces of the bearings 72 and come off. It will be stopped. These are inserted from the end surface of the outer cylinder 11 and fixed with screws 81.

When the completed motor roller 1 is attached to the conveyor frame CF, the supporting shaft 74 has the other supporting shaft 53 inserted into the shaft hole of the conveyor frame CF and the outer cylinder 11 inserted between the conveyor frames CF. After that, it is inserted into the shaft hole 73a from the outside of the conveyor frame CF through the shaft hole CFh and fixed by the screw 75. Therefore, the support shaft 74 is attached so as to project from the bearing receiving shaft 73 in the axial direction. The shaft hole CFh has the same shape as the shaft hole 73a, and the support shaft 74 is engaged with the shaft hole CFh to prevent its rotation.

Next, a method of forming the winding wire 32 of the stator 13 will be described with reference to FIGS. 3 and 7. After engaging the starting end of the wire WD with the engaging electrode 42 with the number "1" by an automatic winding machine (not shown), the winding protection member 17 and the outer peripheral surface of the insulating ring 35 are passed spirally, and U Wind the phase winding 32u. Then, the terminal end thereof is sequentially engaged with the engaging electrodes 42 of the number "2" and the number "3", the winding 32v for the V phase is wound, and the terminal end thereof is numbered "4" and "5". The engagement electrode 42 is engaged in order, the W-phase winding 32w is wound, and the end portion thereof is engaged with the engagement electrode 42 of number "6". After that, the wires WD between the engaging electrodes 42 having the numbers “2” and “3” and “4” and “5” are cut, and the respective ends are wound around the engaging electrodes 42 and soldered.

The lead wires RW are connected to the terminal board 16 as follows. That is, the three lead wires RW of different colors are inserted into the through hole 38 of the second shaft 22 and pulled out from the lateral hole 37b, and the tip portions thereof are inserted into the hole 41b corresponding to each color, Solder. The lead wire RW pulled out from the second shaft 22 through the support shaft 53 is attached to the three-phase power supply terminal provided on the conveyor frame CF in the vicinity thereof after the motor roller 1 is attached to the conveyor frame CF. Connecting.

When three-phase power is supplied to the lead wire RW, a current flows through the winding 32 through the wiring patterns 43 and 44 of the terminal plate 16 and the engagement electrode 42, and a rotating magnetic field is generated in the stator 13. The rotor 14 is rotated by the electromagnetic force acting between the rotor 14 and the rotor 14. The rotational force of the rotor 14 is reduced by the speed reducer 15 and transmitted to the A housing 51, and the outer cylinder 11 integrated with this is rotated.

According to the above-described embodiment, the end portion of the winding 32 is soldered and fixed to the engaging electrode 42 of the terminal plate 16, and the lead wire RW to be connected to the outside is also inserted into the hole 41 b of the terminal plate 16. Since they are fixed by soldering, the electrical conductivity, insulation, mechanical strength, durability, etc. between them are excellent, and reliable wiring is performed.

In addition, the work of treating the end portion of the wire WD is easy, and the wire WD can be directly hooked on the engaging electrode 42 of the terminal board 16 when using the automatic winding machine, so that it is possible to perform a special operation. Winding work and wiring work can be performed very easily and reliably without the need to use a jig.

According to the above-described embodiment, since the lead wire RW is inserted into the through hole 38 of the second shaft and the lateral hole 37b of the first shaft 21 and pulled out to the outside, the lead wire RW is guided by the second shaft 22. It is protected and the processing of the lead wire RW is extremely simple.

Further, since the diameter of the second shaft 22 is made small, the outer diameter of the speed reducer 15 can be made small and the outer diameter of the motor roller 1 can be made small. According to the above-described embodiment, the structure of the roller rotation supporting portion 70 for attaching the motor roller 1 to the conveyor frame CF is simple and the number of parts is small. Further, when assembling the roller rotation supporting portion 70, since it is only necessary to fit the integral body of the bearing 72 and the bearing receiving shaft 73 into the B housing 71, the assembling work is extremely simple. The number of steps is small and the cost can be reduced. Further, since the support shaft 74 is fixed by the screw 75, there is no risk that the support shaft 74 will come off or be pushed into the shaft hole 73a, and the motor roller 1 can be supported reliably.

In the above-described embodiment, since the end portion of the first shaft 21 is supported by the support housing 23, it is necessary to change the length of the shaft 12 even if the length of the outer cylinder 11 becomes long. Absent. Therefore, the three-phase induction motor IM and the speed reducer 15 can be commonly used for various motor rollers 1 having different lengths of the outer cylinder 11, and the mass production effect can be improved.

In the above-described embodiment, the three-phase induction motor IM may be replaced with a single-phase motor, a synchronous motor, or other various types of motors. The structure, shape, size, material, connecting method, fixing method, etc. of each part of the motor roller 1 can be variously changed other than those described above. The present invention can also be applied to conveyor rollers that do not have a built-in motor.

[0043]

[Effect of the device]

 According to the present invention, the structure for attaching to the frame of the conveyor is simple, the number of parts is small, and the cost can be reduced.

According to the invention of claim 2, the motor roller can be securely attached to the conveyor frame. According to the third aspect of the invention, the assembly of the roller rotation support portion becomes easier.

[Brief description of drawings]

FIG. 1 is a sectional front view of a motor roller according to the present invention.

FIG. 2 is an enlarged sectional view of a central portion of the motor roller of FIG.

3 is a sectional view taken along the line III-III of FIG.

4 is an enlarged cross-sectional view of a roller rotation supporting portion of the motor roller of FIG.

FIG. 5 is a left side view of the roller rotation support portion of FIG.

6 is a cross-sectional view of the roller rotation support portion of FIG. 4 taken along the line VI-VI.

FIG. 7 is a wiring diagram of a motor roller.

[Explanation of symbols]

 1 Motor Roller 11 Outer Cylinder 12 Shaft 13 Stator 14 Rotor (Outer Rotor) 15 Reducer 51 A Housing (Drive End Housing) 52 Bearing 53 Support Shaft (Support Shaft, Bearing Support Shaft) 71 B Housing (End Housing) ) 71a Claw 72 Bearing 73 Bearing receiving shaft 73a Shaft hole 74 Support shaft 75 Screw IM Three-phase induction motor (motor)

Claims (3)

[Scope of utility model registration request] 1. A conveyor roller comprising a cylindrical outer cylinder and support shafts projecting from both end surfaces of the outer cylinder for rotatably supporting the outer cylinder. An annular end housing fitted to the inner peripheral surface of at least one end of the bearing, a bearing fitted to the inner peripheral surface of the end housing, and an outer end surface of the bearing fitted to the inner peripheral surface of the bearing. And a bearing receiving shaft having a shaft hole that opens in the bearing receiving shaft, at least one of the supporting shafts is insertable into and removable from the shaft hole of the bearing receiving shaft, and the bearing receiving shaft is provided by an axial screw. A roller for a conveyor, which is attached in a state of protruding in the axial direction from the roller. 2. A conveyor roller comprising a cylindrical outer cylinder and support shafts protruding from both end surfaces of the outer cylinder for rotatably supporting the outer cylinder. An annular end housing fitted to the inner peripheral surface of the one end, a bearing fitted to the inner peripheral surface of the end housing, and an outer end surface of the bearing fitted to the inner peripheral surface of the bearing. A bearing receiving shaft having an opening shaft hole is provided, and one of the supporting shafts is insertable into and removable from the shaft hole of the bearing receiving shaft and axially extends from the bearing receiving shaft by an axial screw. An annular drive end housing fitted into the inner peripheral surface of the outer cylinder, which is attached in a protruding state, and a bearing fitted into the inner peripheral surface of the drive end housing, Fit into the inner peripheral surface of the bearing And a bearing receiving and supporting shaft integrally having another one of the supporting shafts projecting from the end surface thereof, and the shaft of the motor provided in the outer cylinder is connected to the bearing receiving and supporting shaft. A roller for a conveyor, wherein the rotational driving force of the outer rotor of the motor is transmitted to the driving end housing via a speed reducer. 3. The conveyor roller according to claim 1, wherein the end housing has a claw portion that engages with a side surface of the bearing when the bearing is fitted. .