JP2000102220A - Geared motor with distribution panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce time and labor required for recovery when a safety device is actuated and to reduce the number of part items by forming the safety device as an integral constitution with a geared motor. SOLUTION: A motor is composed of a motor part M, a reducer part R, and a terminal box TB, the motor part M accommodates a motor m1 that is rotated by obtaining a power source from an external power supply, and the reducer part R is a reduction gear in inscribed engagement planetary gear structure. Then, a large terminal box TB is mounted to the side surface of a geared motor G where the motor and the reduction gear are formed in one piece, and the terminal box TB also plays the role of the function of a normal terminal block and incorporates a breaker BK. Therefore, a safety device is mounted to the motor m1 itself and can be easily recovered on site, and even if a breaker is tripped, time and labor required for recovery are drastically reduced and at the same time reducing the number of part items are reduced since the terminal block and the safety device can be shared.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device which is supplied with power via a switchboard capable of supplying power and which is capable of shutting off the supply of power under a predetermined condition in a power supply system. Geared motor.

[0002]

2. Description of the Related Art Conveyors are generally widely used as means for moving objects.

[0003] For example, it is also used for flowing parts and products on a production line in a factory or the like, and also for processing (carrying out) wastes (cut chips) and the like emitted from machine tools.

In order to drive this conveyor (not shown), a so-called geared motor (in which a speed reducer is integrated with a motor) as shown in FIG. 4 is used as a drive source.

FIG. 4 shows a geared motor disclosed in Japanese Patent Application Laid-Open No. 5-44793 in which a planetary gear reducer and a motor are integrated.

[0006] The geared motor gm of FIG.
It comprises a deceleration unit r and an output unit s. Power is supplied from a not-shown switchboard (power control device) through a terminal block (not shown) in a terminal box 50 provided integrally with the motor unit m, thereby driving the motor of the motor unit m. ,
The rotation reduced by the reduction gear of the reduction unit r is output to the output shaft 2.
Output from

[0007] For example, a sprocket (not shown) is connected to the tip of the output shaft 2, and a conveyor is driven to the sprocket via a chain (not shown) or the output shaft 2 is directly driven by the conveyor. The drive shaft is driven by being connected to a shaft (not shown).

[0008] By the way, what is desired to be moved (products, chips, etc.) as described above is placed on the conveyor, and in particular, the shape, size, weight, length, etc. of the objects carried by the conveyor are constant. If they are not (different), they may solidify or get stuck at one location on the conveyor.

In such a case, when a state exceeding the carrying capacity of the geared motor gm (so-called overload state) occurs, a large current flows through the motor, and the motor may be damaged. Therefore, in order to prevent the motor from being damaged, a breaker (safety device) that stops supplying power when a predetermined current or more flows may be installed.

Conventionally, since this breaker controls the supply of electric power, it has been provided on a switchboard (located at a location away from the conveyor and the geared motor). That is, a power control device (operation control device) for controlling a main machine tool or the like is housed in the switchboard, and generally, ON-OFF and the like of a plurality of machine tools can be collectively controlled. . The conveyor is considered as an accessory of the machine tool, so including the breaker,
The power control is performed through a switchboard.

[0011]

The geared motor is only a part of the conveyor, and the conveyor is only a part (part) of a main machine tool or the like operated in a factory or the like. Also, the main machine is only a part of the component in the production system of the whole factory.

In recent years, with the increasing need for small-quantity production of other types of products, shortening of product model cycles, and improvement of the efficiency of production systems (rationalization), some of the main machine tools have been remodeled. Opportunities to change the layout in the factory are increasing.

When the main machine tool is modified or the layout is changed, it is necessary to add or move a conveyor attached to the main machine tool. However, the conveyor does not have its own switchboard (operation control device). Although the geared motor itself was equipped with a reduction gear and could be used by itself, very troublesome work such as installing a new breaker or the like on the switchboard of the main machine tool was required.

The present invention has been made in view of such a conventional problem, and is directed to a geared motor in which electric power is supplied through a switchboard, in which electric power is supplied through a safety device. It is an object of the present invention to solve the above-mentioned problems in a motor.

[0015]

SUMMARY OF THE INVENTION The present invention provides a safety device capable of receiving power supply via a switchboard capable of supplying power and interrupting the power supply to a power supply system under predetermined conditions. In the geared motor in which the safety device is integrated with the geared motor, the above problem is solved.

In the present invention, since a safety device such as a breaker is mounted on the motor itself, the work of newly installing a safety device such as a breaker on the switchboard can be omitted, and the work of electric wiring can be reduced. In addition, the installation work of the conveyor can be easily performed, and the time required for the installation time can be reduced.

Furthermore, for example, even if the conveyor is overloaded for some reason and a safety device such as a breaker is activated, the cause can be easily released at the site after the cause is released, and the time required for recovery and the work time Can greatly reduce the burden on the user.

Further, since the geared motor is originally provided with a speed reducer, for example, when a new conveyor is newly installed in the production system or when the conveyor is relocated due to a layout change, the geared motor is used alone. Since it can be used, it is a great advantage that the electric work (work for newly installing a breaker on a switchboard) accompanying this can be omitted. Also, the work of electric wiring can be reduced, and the installation work of the conveyor and the like can be easily performed.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIGS.

FIG. 1 is a diagram showing a main configuration of the present embodiment.

FIG. 1 mainly includes a motor section M, a reduction section R, and a terminal box TB.

The motor section M houses a motor m1 for generating rotation by obtaining a power source from an external power supply (not shown). This is no different from a conventional motor.

The deceleration unit R includes a motor shaft 1 of the motor m1.
The rotation is received from the input shaft 101 of the speed reduction unit R. The deceleration unit R includes an eccentric body 103 provided on the input shaft 101, an external gear 105 attached via the eccentric body 103 to be eccentrically rotatable with respect to the input shaft 101, An internal gear 110 in which an external gear 105 is internally meshed;
And an output shaft 102 connected via a means for transmitting only the rotation component of the rotation gear No. 05.

Here, the above structure is applied to a "reduction gear" by fixing the internal gear 110.

The structure of the speed reducer will be briefly described.

An eccentric body 103 is fitted on the input shaft 101. An external gear 105 is attached to the eccentric body 103 via a bearing 104. The external gear 105 is provided with a plurality of inner roller holes 106, and the inner pin 107 and the inner roller 108 are fitted.

On the outer periphery of the external gear 105, there are provided external teeth 109 such as a trochoid tooth shape and a circular tooth shape. The external teeth 109 are in internal mesh with an internal gear 110 integrated with the casing 112. Specifically, the internal teeth of the internal gear 110 have a structure in which an external pin 111 is loosely fitted in an external pin hole 113 and held so as to be easily rotated.

When the input shaft 101 makes one rotation, the eccentric body 10
3 makes one rotation, and the external gear 105 also attempts to swing around the input shaft 101. However, since the rotation is restricted by the internal gear 110, the external gear 105 almost only swings while being in contact with the internal gear 110.

The rotation of the external gear 105 is absorbed by the gap between the inner roller hole 106 and the inner pin 107, and only the rotation component is transmitted to the output shaft 102 via the inner pin 107. .

The output shaft 102 is connected to the mating member 130, and the rotation is transmitted to the mating member 130.

In the present embodiment, the mating member 130 is a drive shaft (not shown) of a chip conveying conveyor attached to a main machine tool.

Further, in the present embodiment, a large terminal box TB is attached to the side surface of the geared motor GM in which the motor and the speed reducer are integrated.

Conventionally, the terminal box is provided outside the motor section M, and is large enough to accommodate a terminal for receiving power (see terminal box 50 in FIG. 4).

Here, the terminal box TB will be described.

FIG. 2A is a front view of the terminal box TB, and FIG. 2B is a bottom view. Note that the upper half of FIG. 2B is a view when the cover 140 of the terminal box TB is removed.
The lower half is partially cut away with the lid 140 closed. FIG. 3 is a front view and a bottom view when the lid 140 of the terminal box TB is closed.

The terminal box TB also has the function of a normal terminal block, and has a built-in breaker (safety device) BK. Electric power to the geared motor GM is supplied from a switchboard that supplies electric power to a main machine tool to a terminal box TB via a power cable 134, and transmitted to a motor lead 132 through a breaker BK.

The breaker BK is a device for protecting the motor m1 from being damaged by an overcurrent flowing through the motor m1.

When a predetermined amount or more of current flows through the breaker, the handle 138 is lowered to stop supplying power.

The case where a current of a predetermined amount or more flows through the breaker means, for example, that a conveyed product (such as chips) is solidified at a certain location on the conveyor, as described in "Prior Art". The motor m1 is overloaded when the motor m1 is overloaded or when something is caught in the conveyor.

The breaker BK may be an electromagnetic breaker or an earth leakage breaker. The earth leakage breaker can be easily housed in the terminal box because there is little difference in the large size from the electromagnetic breaker. Further, the motor is not limited to these two as long as it protects the motor from damage and can cut off the supply of power under predetermined conditions. Therefore, the claims merely refer to “safety devices”.

Conventionally, power of a main machine tool is supplied via a switchboard, and power is also supplied from a switchboard to a geared motor of a conveyor which is an accessory of the machine tool. Safety devices) were also housed in the switchboard.

In this embodiment, the breaker BK is installed in the terminal box.
By incorporating a breaker (safety device) on the motor m1 itself, a new conveyor is newly installed around the main machine tool, and a new breaker is added to the switchboard when it is relocated. Work can be omitted, and the work of electrical wiring can be reduced. In addition, the installation work of the conveyor can be easily performed, and the time required for the installation time can be reduced.

Further, since the breaker is installed integrally with the geared motor GM, even if the conveyor is overloaded for some reason and the breaker falls, even after the cause is removed,
Conventionally, the work to restore the breaker to the switchboard provided in a location away from the conveyor can now be easily canceled at the site, greatly reducing the time required for restoration and the burden on the operator it can.

Further, the terminal block and the breaker become the same, and the number of parts can be reduced.

The breaker BK may be of a type that can be accommodated in the size of the terminal box. Conversely, a terminal box that matches the size of the breaker BK may be selected. If the terminal box is selected according to the size of the breaker, the smaller the breaker is, the smaller the terminal box can be.

As described above, in the present embodiment, a breaker is taken as an example of the "safety device". However, for example, it is possible to detect that a current of a predetermined amount or more has flowed or a leakage current other than the terminal box TB. In the terminal box TB, a sensor or the like may be attached, and a safety device that cuts off electric power (other than a breaker) may be used instead.

[0047]

According to the present invention, a safety device is installed integrally with a geared motor provided with a switchboard, so that if the motor is overloaded for any reason, the safety device is stored as in the prior art. There is no need to restore the safety device to the existing switchboard, which saves labor and time.

Further, by incorporating the safety device in the terminal box of the motor, the terminal block and the safety device can be shared,
The number of parts can be reduced.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a main part of the present invention.

FIG. 2 is a front view and a bottom view showing the inside of the breaker according to the present invention.

FIG. 3 is a front view and a bottom view showing the exterior of the breaker according to the present invention.

FIG. 4 is an external view showing the entire conventional geared motor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 101 ... Input shaft 102 ... Output shaft 103 ... Eccentric body 105 ... External gear 110 ... Internal gear 120 ... Motor shaft 132 ... Motor lead wire 134 ... Power supply cable BK ... Breaker GM ... Geared motor R ... Reduction part TB ... Terminal box M ... Motor part m1 ... Motor

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5H605 AA07 AA08 BB05 CC06 DD09 EC13 EC14 5H611 AA03 BB01 PP00 QQ05 RR00 SS00 TT01 UA00

Claims (4)

[Claims] 1. A geared motor which is supplied with power via a power distribution board capable of supplying power and has a built-in safety device capable of shutting off the supply of power under a predetermined condition to the power supply system. A geared motor comprising a switchboard, wherein a safety device is integrated with the geared motor. 2. A power supply according to claim 1, wherein a main machine tool is supplied with power by the switchboard.
A geared motor equipped with a switchboard, wherein the geared motor is used in a transfer device attached to the main machine tool, and the geared motor is also configured to be supplied with power by the switchboard. 3. The geared motor according to claim 1, wherein the safety device is incorporated in a terminal box having a terminal block for the motor. 4. The geared motor according to claim 1, wherein the safety device is a breaker.