JP2000193046A - Offset type geared motor device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply change the direction of offset. SOLUTION: This geared motor device comprises a geared motor 10 to generate a rotational drive force, a parallel shaft gear mechanism having a rotary output axis S2 parallel to the input axis S1 of the rotational drive force and offset from the input axis S1, and an installation bracket 30 having an installation surface parallel to the rotary output axis S2 and removably coupled to a parallel axis gear mechanism 20 by a plurality (four) of mounting bolts 50 arranged at equal pitches (90 deg.) on a periphery centering around the input axis S1. The parallel axis gear mechanism 20 and an installation bracket 30 are relatively rotatable in the direction of a periphery centering around the input axis S1 with the mounting bolts 50 removed, and a mode in a relative mounting direction is selected from a plurality of modes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an offset-type geared motor device used as a drive mechanism in a transport facility for frictionally transporting an object by bringing the peripheral surface of a rotating tire into contact with the object.

[0002]

2. Description of the Related Art FIG. 8 schematically shows a transfer equipment for a coating line for a white body of an automobile.
(B) is a front view. In this coating line, a plate 2 is vertically attached to a lower portion of a white body 1 supported by a guide mechanism (not shown).
The tire 3 is pressed from the side to rotate the white body 1 slowly. Tire 3
Are provided in the drive units 4 arranged along the line. When one drive unit 4 feeds the plate 2 to the end, the next drive unit 4 starts to feed by gripping the head of the plate 2. I have. As the drive unit 4 in this case, an offset type geared motor device is used.

[0003] Since the line is bent in accordance with the layout of factories and coating equipment, the installation mode of the drive unit 4 also varies. Thus, not only from a particular direction,
It is desired that the tire 3 can be pressed against the plate 2 from various directions such as a direction rotated by 80 degrees (a direction accessed from the opposite side of the plate 2).

[0004] In addition, offsets of various lengths are required in relation to external members (such as a base and a base frame) on which the geared motor device is to be mounted.

Conventionally, when the direction and length of the offset of the drive unit 4 are changed, various types of geared motor devices having flanges (not shown) oriented in various directions from the beginning are prepared and used as needed. I was

In this case, from the general design concept, the flange is integrated with a portion where the largest torque is generated, that is, a housing for accommodating the offset tire 3.

[0007]

However, if geared motors with flanges oriented in various directions are prepared from the beginning simply to make the direction of offset different, the number of types of geared motors becomes too large, and the management becomes complicated. Instead, not all geared motors are wasted when changing lines.

In particular, in this type of offset type geared motor device, particularly, the length (size) of the offset
Since many types are required in the direction of offset and offset, if the housing and the flange accommodating the offset tire 3 are integrated, the types of the geared motor device itself are prepared by the number of types of offset required. There was a problem that needed to be.

An object of the present invention is to provide an offset type geared motor device in which the direction and length (size) of an offset can be easily changed in consideration of the above circumstances.

[0010]

According to a first aspect of the present invention, there is provided a driving mechanism for generating a rotational driving force, and a rotational output coupled to the driving mechanism and offset parallel to an input axis of the rotational driving force. An offset output portion having an axis, and a mounting surface for the outside, and a plurality of mounting bolts arranged at a predetermined pitch on a circumference centered on the input axis and parallel to the rotation output axis. A mounting bracket detachably connected to the output unit, wherein the offset output unit and the mounting bracket are relatively rotatable in a circumferential direction around the input axis with the mounting bolts removed. It is possible to select from a plurality of aspects of the mounting direction from each other,
The present invention has solved the above problem.

In the offset type geared motor device according to the present invention, the mounting bracket and the offset output portion are formed by a plurality of mounting bolts arranged at equal pitches (parallel to the rotation output axis) on a circumference around the input axis. It is detachably connected. Therefore, remove the mounting bolts once, change the mounting angle between the mounting bracket and the offset output section, and tighten the mounting bolts again to change the direction of the offset of the output axis with respect to the mounting surface of the mounting bracket in multiple directions. Can be.

For example, if the number of mounting bolts is four (claim 2), the mounting bracket and the offset output portion can be set in four different directions by 90 degrees in the mounting direction. Needless to say, if the number of mounting bolts is set to N, N types of mounting brackets and offset output sections in the mounting direction that are shifted by 360 / N degrees can be set.

In the offset type geared motor device of the present invention, the point is that the installation bracket and the offset output portion can be relatively rotatably and detachably assembled. Thus, the mounting bracket may be attached to either side of the offset output, for example,
The order may be the order of the drive mechanism, the offset output unit, and the mounting bracket, or the order of the drive mechanism, the installation bracket, and the offset output unit. However, the mounting bracket is disposed between the drive mechanism and the offset output section (that is, the drive mechanism, the installation bracket, and the offset output section in this order), and the mounting bracket is detachably connected to the drive mechanism. In such a case (claim 3),
Since the mounting bracket is installed at a position adjacent to the offset output section, the offset output section that generates a large dynamic torque can be firmly mounted on an external member (base or frame), and at the same time, the mounting bracket Is located substantially at the center of the geared motor device, so that the entire geared motor device can be stably mounted on the external member in terms of static weight balance. Nevertheless, since the mounting bracket can be stock-managed as an independent member for the offset output section and the drive mechanism section, it is necessary to prepare various kinds of mounting brackets in advance. Also becomes easier.

Further, the connecting position of the mounting bracket to the drive mechanism is changed in a circumferential direction about the input axis.
In the case where the adjustment is made possible (claim 4), the mounting mode of the mounting bracket can be changed with respect to the drive mechanism, so that the external shape of the drive mechanism may interfere with the installation target environment. However, it can be installed while avoiding it.

The shape of the mounting bracket includes a portion functioning as a housing member that covers the end surfaces of the offset output portion and the drive mechanism portion, and a flange portion having the mounting surface perpendicular to the portion functioning as the housing member. A substantially L-shaped shape is preferable in a side view (claim 5). As a result, the housings of the three members can be prevented from overlapping with each other, and in particular, the axial direction can be made compact and the overall weight can be reduced.

According to a sixth aspect of the present invention, the drive mechanism is constituted by a geared motor including a motor for generating a rotational driving force and a first-stage gear mechanism for reducing and outputting the rotational driving force. The part is constituted by a second-stage gear mechanism that receives the decelerated output rotation of the first-stage gear mechanism and outputs the output from the offset output shaft to the outside. According to a seventh aspect of the present invention, the first stage gear mechanism is an internally meshing planetary gear reducer, and the second stage gear mechanism is a parallel shaft gear mechanism. With these configurations, a large reduction ratio can be efficiently obtained with a simple configuration, and an offset having a free dimension can be easily obtained.

According to another aspect of the present invention, there is provided a conventional example in which a rotary carrier such as a tire for frictionally transporting the transported object by attaching the peripheral surface to the transported object is attached to the output shaft of the offset output section. It can be used for the applications shown in. However, in the present invention, the form of the output shaft of the offset output unit is not limited, and may be appropriately determined according to the application. For example, in the case of transporting a belt-like transported material such as paper, film, and thin steel sheet along a transport line, a drive roller that rotates in combination with an idle roller may be attached. In the case of driving a chain crawled along a line, a sprocket that meshes with the chain may be attached.

According to the ninth aspect of the present invention, the mounting bracket is
A choice is made from a plurality of types of mounting brackets with different distances from the input axis to the mounting surface. With this configuration, it is possible to easily cope with a change in the installation height.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall configuration diagram of an offset type geared motor device M of the embodiment.

First, an outline of the overall configuration will be described. This offset type geared motor device M includes a geared motor (motor with a reduction mechanism) 10 constituting a drive mechanism, a parallel shaft gear mechanism 20 constituting an offset output unit, The offset type geared motor device M is disposed between the two components 10 and 20, and includes an installation bracket 30 for installing and fixing the entire offset type geared motor device M to an installation target member W (described later) such as an external base or a base frame.

Geared motor 10 as the drive mechanism
Is composed of a motor 11 for generating a rotational driving force, and an internal meshing planetary gear mechanism 12 as a first-stage gear mechanism for reducing and outputting the rotational driving force.

The motor 11 and the internally meshing planetary gear mechanism 12
Are arranged on one (identical) axis S1, and the output shaft 12a of the internally meshing planetary gear mechanism 12 is connected to this axis S1.
It's above. The axis S1 is an axis to which a rotational driving force is input when viewed from the side of the parallel shaft gear mechanism 20, and is hereinafter referred to as an "input axis" S1.

The internally meshing planetary gear mechanism 12 includes an input shaft 1 connected to a motor shaft 11a via a connector 11b.
2b, an eccentric body 12c disposed on the input shaft 12b, an external gear 12d swinging around the eccentric body 12c, an internal gear 12e meshing with the external gear 12d, and an external gear 12
d, which penetrates in a loose fit state, and incorporates a carrier pin 12f connected to the output shaft 12a. When the input shaft 12b and the eccentric body 12c rotate, the external gear 1
2d swings internally and meshes with the internal gear 12e, and only the rotation component of the external gear 12d is taken out of the output shaft 12a via the carrier pin 12f. This deceleration mechanism
The axis of the motor 11 and the axis of the output shaft 12a are the same (S
Since it is possible to maintain the condition (1), it is possible to change the mounting manner as it is assembled as described later, and it is possible to obtain a large deceleration in one step.

Next, the parallel shaft gear mechanism 20 as the offset output section has a rotation output axis S2 parallel to the input axis S1 and offset with respect to the input axis S1. An output shaft 20a is provided on S2. Output shaft 20a is offset housing 20H
The polyurethane tire 3 (rotary transport body) for use in friction transport shown in FIG. 7 is attached to the projecting portion.

The parallel shaft gear mechanism 20 includes the mounting bracket 3
0 is connected to the output side of the internal meshing planetary gear mechanism 12 with a 0 therebetween. That is, the parallel shaft gear mechanism 20
A first spur gear 23 coupled to the output shaft 12a of the internally meshing planetary gear mechanism 12, a second spur gear 24 meshed with the first spur gear 23, and the output shaft coupled to the second spur gear 20
a, receiving the reduced output rotation from the internal meshing planetary gear mechanism 12, transmitting this to the offset output shaft 20a via the first and second spur gears 23 and 24, and further outputting to the tire 3. Transmit rotation.

The mounting bracket 30 is for mounting the geared motor device M itself to an external member W to be installed (described later), and includes the geared motor 10 and the parallel shaft gear mechanism 2.
0, it is detachably arranged. As shown in FIG. 5, the mounting bracket 30 includes an end surface housing portion 3 that covers the end surfaces of the geared motor 10 and the parallel shaft gear mechanism 20.
2 and a flange portion 33 orthogonal thereto are connected to each other, and have a substantially L-shaped shape in a side view. The bottom surface of the flange portion 33 serves as an installation surface 34 for installing and fixing the geared motor device to an outside (not shown). This mounting surface 34
Is set parallel to the input axis S1 and the output axis S2. Further, a through hole 35 for a fixing bolt is formed in the flange portion 33.

Hereinafter, a detailed description will be given of a detachable structure of each housing centering on the mounting bracket 30 which is the main point of the present invention.

The housing 10H of the geared motor 10 constituting the drive mechanism includes a motor housing main body 10H1 and a reduction gear housing 10H2 in which the above-described internal gear 12e is integrated. The housing 20H of the parallel shaft gear mechanism 20, which constitutes the offset output unit, is
0H1 and a gear case 20H2. In the mounting bracket 30, the end housing part 32 also serves as a part 20H3 of the housing 20H of the parallel shaft gear mechanism 20 constituting an offset output part, and the housing 1 of the geared motor 10 in which the end housing part 32 constitutes a driving mechanism part.
Part of 0H also serves as 10H3 at the same time.

FIG. 2 is a view taken in the direction of arrows IIA and IIB in FIG. FIGS. 3 and 4 show the shapes of the cover 20H1 and the gear case 20H2 constituting the housing 20H of the parallel shaft gear mechanism 20, respectively. FIG. 5 shows the shape of the mounting bracket 30 alone. 3 to 5, the cross sections taken along arrows D (D), E (E), and F are shown on the left side of each drawing.

As is clear from FIGS. 4 and 5, both the mounting bracket 30 and the gear case 20H2 have the input axis S1.
Equal pitch on the same circumference P centered at
And a plurality of (four) bolt holes 36 and a (stepped) through hole 62 arranged so that they can be detachably connected by mounting bolts 50 (FIG. 1). Therefore, if the two bolts 30 and 20H2 are disassembled by removing the mounting bolt 50, the connecting position of the mounting bracket 30 can be arbitrarily set every 90 degrees in the circumferential direction around the input axis S1 with respect to the gear case 20H2, that is, the offset output portion. (Rotation).

The gear case 20H2 and the cover 20H
1 is connected via bolts 52 and 54 (FIG. 1). The bolt 52 is provided in the (stepped) through hole 73 of the cover 20H1.
Through the screw hole 64 of the gear case 20H2. The bolt 54 is screwed into the screw hole 66 of the gear case 20H2 through the through hole 75 of the cover 20H1. Note that the reference numeral 77 of the cover 20H1 is
Is screwed into the bolt hole 36 of the mounting bracket 30 through the (stepped) through hole 62 of the gear case 20H2 to allow the mounting bolt 50 to pass through.

The eight bolts 55 are attached to the mounting bracket 30.
Of the motor housing 10H1 via the stepped through hole 37 of the motor housing 10H1 through the through hole 14 of the reduction gear housing 10H2.
And the mounting bracket 30 is detachably connected to the geared motor side.

The bolt 56 shown in FIG. 1 is used for temporarily fixing the reduction gear casing 10H2 of the internally meshing planetary gear mechanism 12 and the mounting bracket 30 when the geared motor device M is assembled. , FIG. 2 (B)).

Next, the operation will be described.

The parallel shaft gear mechanism 20 constituting the offset output unit has an output shaft 12a offset with respect to the input axis S1. A cover 20H1 and a gear case 20H2 forming a main housing of the parallel shaft gear mechanism 20
Are integrated by bolts 52, 54, while
In the gear case 20H2 and the mounting bracket 30, a plurality (four) (stepped) through-holes 62 arranged at equal pitches (90-degree intervals) on the same circumference P around the input axis S1;
Bolt holes 36 are respectively formed. Therefore, if the mounting bolts 50 screwed into the through holes 62 and the bolt holes 36 are removed and the two 30, 30H2 are disassembled, the connection position of the mounting bracket 30 is changed to the gear case 20H2, that is, the input axis S1 with respect to the offset output portion. It can be arbitrarily (relatively) shifted (rotated) every 90 degrees in the direction of the circumference P having the center. That is, the gear case 20H2 and the (geared motor 1)
6 (A) to 6 (D), by changing the mounting manner of the mounting bracket 30 (where the mounting bracket 30 is attached to the mounting bracket 30), the offset direction comes to the mounting surface 34 side of the mounting bracket 30. Is not practical, so that three types of offset directions can be set. That is, the offset direction can be arbitrarily set at intervals of 90 degrees.

The mounting bolt 5 of the cover 20H1
Since the through hole 77 for inserting a tool is previously formed in the position of 0, the mounting bolt 50 can be removed without removing the cover 20H1 from the gear case 20H2, and the axis of the geared motor 10 and the parallel shaft gear mechanism are further provided. Since the axes 20 coincide with each other (both are the input axes S1), the mounting bolts 5
By simply removing 0, the parallel shaft gear mechanism (offset output unit) 20 can be turned around the input axis S1 while the other parts are assembled.

FIG. 7 shows a state in which the geared motor device M realizing a certain offset direction is installed and fixed to the installation target wall W. The upper diagram of FIG. 7 is a diagram of the output shaft 20a as viewed from the front.
It is a J arrow view.

In the above embodiment, the mounting bracket 30 can be attached to and detached from the drive mechanism so that it can be rotated by 180 degrees. Further bolts 56
For example, the position of the screw hole 38 for the function of temporary fixing by the screw hole 38 is increased by two more places to make a total of four, and by making a 90-degree equal-pitch hole, it is possible to rotate and attach at 90-degree intervals. Even in this case, it is actually sufficient to use only two of the four). This rotation attachment / detachment configuration between the mounting bracket 30 and the drive mechanism side makes it possible to change the relative mounting angle between the installation bracket 30 and the drive mechanism side. Therefore, in particular, when the outer shape (cross-sectional shape) of the drive mechanism is rectangular instead of square or circular, or when the outer shape has irregularities around the input axis S1, the offset output portion and the installation flange portion are not provided. By rotating the drive mechanism with respect to the installation flange while keeping it as it is, it is advantageous in that the geared motor device M can be installed while avoiding interference between the drive mechanism and an obstacle.

If a plurality of types of installation brackets 30i having different distances L from the input axis S1 to the installation surface 34 are prepared in advance and can be appropriately selected and replaced, a wide variety of installations can be achieved. Aspects can be realized. In the case of this embodiment, since the installation bracket 30 is detachable from both the offset output section and the drive mechanism section, the advantages thereof can be particularly effectively used.

In the above embodiment, the case where the mounting bracket and the offset output portion are connected by using four mounting bolts has been described. However, the number of mounting bolts may be any number as long as the number is plural. . In this case, the pitch of each bolt hole as a whole does not necessarily have to be the same pitch, but the basic pitch of the set of mounting bolts (or four set pitches when stopping with four bolts) is as follows. It is necessary to set this so that it is completely rotated around the input axis.

[0042]

According to the present invention, since the mounting bracket and the offset output portion are connected by a plurality of mounting bolts arranged at equal pitches around the input axis, the output axis can be offset by one type of geared motor device. Can easily be changed to multiple directions.

[Brief description of the drawings]

FIG. 1 is a side sectional view of an offset type geared motor device according to an embodiment of the present invention.

FIG. 2 is a view taken in the direction of arrows IIA and IIB in FIG.

FIG. 3 is a front view and an arrow D view of a cover of an offset output unit in the geared motor device.

FIG. 4 is a front view of a gear case of an offset output unit in the geared motor device, and is a view as seen from an arrow E.

FIG. 5 is a front view of a mounting bracket in the geared motor device, and a view as seen in the direction of arrow F;

FIG. 6 is a plan view showing an example in which the direction of the offset is changed.

FIG. 7 is a front view and a side view showing an installation example of the geared motor device realizing the offset direction.

FIG. 8 is a side view and a front view for explaining a conventional coating line.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Geared motor (drive mechanism part) 11 ... Motor 12 ... Inner meshing planetary gear mechanism 12a ... Output shaft 20 ... Parallel shaft gear mechanism (offset output part) 20a ... Output shaft 30 ... Mounting bracket 32 ... End face housing part 33 ... Flange Part 34: Installation surface 50: Mounting bolt P: Circumference S1: Input axis S2: Output axis

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hirokazu Koyama 6-1-1 Asahi-machi, Obu-shi, Aichi Prefecture Sumitomo Heavy Industries Machinery Co., Ltd. Nagoya Works Address F-term in Technos Co., Ltd. (reference)

Claims (9)

[Claims] A drive mechanism for generating a rotational drive force; an offset output unit coupled to the drive mechanism and having a rotational output axis offset in parallel with an input axis of the rotational drive force; A mounting bracket having a surface and being detachably connected to the offset output section by a plurality of mounting bolts arranged at a predetermined pitch on a circumference around the input axis and parallel to the rotation output axis. The offset output unit and the mounting bracket are relatively rotatable in a circumferential direction around the input axis in a state where the mounting bolts are removed. An offset-type geared motor device characterized in that it can be selected from the following. 2. The mounting bracket according to claim 1, wherein the number of the mounting bolts is set to four, so that the mounting bracket and the offset output portion are set in four different mounting directions. Offset type geared motor device. 3. The offset according to claim 1, wherein the mounting bracket is disposed between the drive mechanism and the offset output unit, and is also detachably connected to the drive mechanism. Type geared motor device. 4. The connecting position of the mounting bracket according to claim 3, wherein
An offset-type geared motor device, which can be changed and adjusted in a circumferential direction around the input axis. 5. The mounting bracket according to claim 3, wherein the mounting bracket has a portion functioning as a housing member that covers end surfaces of the offset output portion and the drive mechanism portion, and the mounting surface perpendicular to the portion functioning as the housing member. And a flange portion having a substantially L-shape in side view. 6. The offset output device according to claim 1, wherein the driving mechanism is constituted by a geared motor including a motor for generating a rotational driving force and a first-stage gear mechanism for reducing and outputting the rotational driving force. An offset-type geared motor device, characterized in that the portion is constituted by a second-stage gear mechanism that receives the decelerated output rotation of the first-stage gear mechanism and outputs the output from an offset output shaft to the outside. 7. The offset-type geared motor device according to claim 6, wherein the first-stage gear mechanism comprises an internally meshing planetary gear reducer, and the second-stage gear mechanism comprises a parallel shaft gear mechanism. 8. The apparatus according to claim 1, wherein a rotary conveyance body that frictionally conveys the conveyed object by attaching a peripheral surface to the conveyed object is attached to the output shaft of the offset output unit. Offset type geared motor device. 9. The offset type geared motor according to claim 1, wherein the mounting bracket is selected from a plurality of types of mounting brackets having different distances from the input axis to a mounting surface. apparatus.