JPS622168B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a clutch/brake device incorporating a clutch mechanism and a brake mechanism.

(Prior art and its problems) A clutch/brake device in which an electromagnetic clutch mechanism and an electromagnetic brake mechanism are built into a case is known as disclosed in Japanese Utility Model Application Publication No. 134533/1983.

This type of device is often used in a drive source transmission system that frequently repeats transmission and stops. Conventionally, as shown in FIG. It was common to connect and use transmission elements d and e such as. However, in this case, each device a, b, and c are independent, and the transmission elements d and e, which are provided separately, must be placed in appropriate locations, so the installation space for the entire device is large. At the same time, there was a drawback that it took a long time to assemble and adjust each component.

Furthermore, as shown in FIG. 6, it has been known that a motor f and a speed reducer g are detachably connected and used as a unit.

In this conventional example, a pinion i formed on a drive shaft h of a motor f and an internal gear j of a reducer g are configured to engage with each other so that they can be inserted and removed in the axial direction,
When the motor f and the reducer g are connected in series, the pinion i and the internal gear j mesh to enable power transmission.

If this were to be used as is in a drive source transmission system that requires clutch/brake functions, the clutch/brake device would be connected to the motor/reducer unit, but at this time, the clutch/brake device would have low speed and high speed Since torque power is transmitted, a problem arises in that the clutch/brake device must be large-sized, which is a very large practical disadvantage.

Further, it has been known that a motor and a clutch/brake device are integrally formed, and a transmission element between the two is not required. However, in this conventional example, since the motor and the clutch/brake device are constructed inseparably, there are the following problems.

Depending on the purpose of use, there are cases where it is desired to use a combination of a clutch/brake device with excellent performance and a motor, and cases where it is desired to use a combination of a clutch/brake device with inferior performance but inexpensive and a motor. However, in this conventional example, these combinations cannot be freely selected.

When it is desired to directly connect a speed reducer to a motor, it is impossible to remove only the clutch/brake section, so the motor section of this conventional example cannot be used effectively. Furthermore, if the drive source transmission system shown in FIG. 5 is modified to introduce this conventional example, the existing motor becomes unnecessary, which is uneconomical.

In this conventional example, if either the motor section or the clutch/brake section fails, the entire device becomes unusable.

(Objectives of the Invention) In view of the above, the present invention has the following objects.

Solve the problems of the conventional example.

To provide a clutch/brake device which is suitable for being removably connected between a motor and a speed reducer similar to the conventional example shown in FIG. 6, and which can have a shortened axial dimension.

To provide a clutch/brake device in which a power transmission part with a motor is configured so as to withstand the impact force even if the clutch is frequently engaged and engaged.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a motor in which a pinion is formed on the drive shaft, and a motor that can be inserted into and removed from the pinion in the axial direction when connected to the motor in series. A clutch/brake device that is removably connected to a reduction gear that has internal gears that mesh with each other, and a case that is removably connected to an end of the motor and an end of the reduction gear, respectively. On the other hand, an electromagnetic clutch mechanism on the input shaft side and an electromagnetic brake mechanism on the output shaft side are disposed in the case, and the input shaft is engaged with the pinion in an axially removable manner. A shaft hole having internal mating teeth is formed so that when the case is coupled to the end of the motor, the pinion and the internal mating teeth are engaged with each other so as not to rotate relative to each other. When an external gear having the same shape as the pinion is provided on a portion of the shaft that projects outward from the case, and the case is coupled to an end of the reduction gear, the external gear and the internal gear are connected to the pinion. It is characterized in that it is configured to mesh in the same state as the state in which it meshes with the internal gear.

(Function) Since the present invention has the above configuration, it has the following effects.

The clutch/brake device of the present invention and the motor can be removably connected in series, and the shaft hole of the input shaft of the clutch/brake device and the pinion of the drive shaft of the motor are removably engaged in the axial direction. do. Further, the clutch/brake device of the present invention and the reduction gear can be detachably connected in series, and the external gear of the output shaft of the clutch/brake device and the internal gear of the reducer can be inserted and removed in the axial direction. mesh. The pinion and the external gear are formed in the same shape, and mesh with the internal gear of the reduction gear in the same state.

Therefore, the motor, the clutch/brake device, and the speed reducer can be freely combined into a unit as required as follows.

The combination of motor-clutch/brake device-reducer motor-reducer motor-clutch/brake device is used as a general-purpose product as mentioned above, but without any modification to the motor and reducer, A clutch/brake device can be connected between them (in this case,
Since the clutch/brake device can be assembled in high-speed/low-torque locations, it does not require an increase in size. ), it is possible to construct a drive source transmission system with a compact unitized clutch/brake function.

Furthermore, since the motor and clutch/brake device are removably connected, there are problems with conventional examples in which the motor and clutch/brake are integrally formed.
, can be resolved.

In further combinations, there is no need for special transmission elements and the units can be made compact, so that the problems of the conventional example shown in FIG. 5 can be solved.

The input shaft of the clutch/brake device is formed with a shaft hole having internal engagement teeth that can be removably engaged in the axial direction with a pinion formed on the drive shaft of the motor. The shaft is formed with an external gear that is removably engaged with the internal gear of the reducer in the axial direction.

Therefore, when the motor and the clutch/brake device are combined, or when a reduction gear is combined in addition to these, the axial dimension of the unit body can be minimized in both cases, and As a result of being able to form a unit by attaching and detaching in the axial direction, the operation can be performed smoothly.

The engaging internal teeth and the pinion are engaged so as not to rotate relative to each other, and the input shaft and the drive shaft are integrally connected.

Therefore, even if the clutch/brake device frequently repeats engagement and disengagement of the clutch, the impact force can be withstood, and the durability of the power transmission section between the motor and the clutch/brake device can be improved.

(Example) The present invention will be specifically described below based on an example shown in the drawings.

As shown in FIGS. 1 and 3, the clutch/brake device of the present invention has a pinion 8 on the drive shaft.
The motor 7 is configured to be removably connected between the motor 7 formed therein and the speed reducer 11 provided with the internal gear 12. The motor 7 and the reducer 1
1 can be connected in series to form a unit, as described with respect to the conventional example shown in FIG.
For this reason, the pinion 8 and the internal gear 12 are formed so as to be able to engage with each other in an axially removable manner.

In the clutch/brake device, the first
As shown in FIG. 2, an electromagnetic clutch mechanism 1 is installed in the left part of the case, and an electromagnetic brake mechanism 2 is installed in the right part of the case, which is made up of a bottomed rectangular cylindrical case body 14 and a cover body 19. The shaft of the input rotor 15, which is a component of the electromagnetic clutch mechanism 1, is the input shaft 5, and the shaft of the output rotor 16, which is a component of the electromagnetic brake mechanism 2 and the electromagnetic clutch mechanism 1, is the output shaft 6. There is. The input shaft 5 is located inside the case, and a portion of the output shaft 6 protrudes outside the case.

The electromagnetic clutch mechanism 1 includes a first field member 18 that constitutes an electromagnet together with an excitation coil 17.
is fixed to the case body 14 via a cover body 19. Further, the input side rotor 15 is rotatably supported in the center hole of the first field member 18 and the cover body 19 via bearings 20, 20. The disk 21 of the rotor 15 is disposed at a position close to and facing the first field member 18, and has a friction plate 2 on the surface opposite to the first field member 18.
2 is installed. The shaft (input shaft) 5 of the rotor 15 is disposed on the central axis of the device, and has a shaft hole having an engaging internal tooth 9 that engages with the pinion 8 of the motor 7 in an axially removable manner. 10 are formed. This shaft hole 10 is formed along the axis of the input shaft 5, and when the end of the motor 7 is attached and connected to the motor attachment part 3 described later, the pinion 8 is formed along the axis of the input shaft 5.
is inserted into the shaft hole 10, the engaging internal teeth 9
It is configured to be non-rotatably engaged with the. The illustrated shaft hole 10 passes through the center of the input rotor 15 along the axis of the input shaft 5, but is not limited to this. It may be a blind hole. Further, the engaging internal teeth 9 control the rotation of the pinion 8 to the input side rotor 1.
In addition to having the same number of teeth as the pinion 8, for example, the pitch of the pinion 8 may be
It may have inwardly projecting teeth arranged at double pitch.

The electromagnetic brake mechanism 2 includes a second field member 24 that constitutes an electromagnet together with an excitation coil 23.
is fixed to an output side cover part 25 provided integrally with the case body 14. A friction plate 31 is attached to the end face of the second field member 24. Further, the output rotor 16 is rotatably supported at its shaft 6 within the center holes of the cover portion 25 and the second field member 24 via bearings 26, 26. An input side armature 28 is attached to the input side surface of the rotating disk 16a of the rotor 16 via a leaf spring 27, and an output side armature 30 is attached to the output side surface of the rotating disk 16a via a leaf spring 29. These armatures 28 and 30 are configured to be movable in the axial direction, but are restrained from moving in the rotational direction, and are configured to rotate integrally with the output rotor 16. The input armature 28 and the output armature 30 are disposed close to and facing the friction plate 22 of the input rotor 15 and the friction plate 31 of the second field member 24, respectively. Furthermore, the shaft (output shaft) 6 of the output side rotor 16 is arranged on the central axis of the device, is configured to be on the same axis as the input shaft 5, and protrudes outside the case of the output shaft 6. The external gear 13 has a tooth profile having the same shape as the pinion 8 of the motor 7 on the part thereof, and meshes with the internal gear 12 when the end of the reducer 11 is attached and connected to the reducer mounting part 4 described later. It is set up.

The cover body 19 has a shape as shown in FIG. 2, and the cover body 19 has a shape as shown in FIG.
is fixed to. As a result, the female fitting part 3 is formed between the input side end of the case body 14 and the cover body 19.
2 is formed, and is configured to fit into a circular male fitting portion 34 formed on the output side end portion 33 of the motor 7. Further, the central portion of the output side cover portion 25 protrudes in a circular shape to constitute a male fitting portion 35, which is fitted into a female fitting portion 37 formed at the input side end portion 36 of the reducer 11. There is. Further, each of the four pairs of the case body 14 is provided with mounting holes 38, 38, . . . that penetrate in the axial direction. These mounting holes 38, 38..., as shown in FIG.
4 provided so as to penetrate in the axial direction at each of the four corners of the
The four bolts 4 align with the four holes 42, 42...
3, 43, . . . so that the motor 7, this device, and the speed reducer 11 can be connected in series. In addition, when connecting in this way, the male and female fitting parts 32 and 34 between this device and the motor 7 and the female and male fitting parts 37 and 35 between this device and the reducer 11 are both fitted together. , the three parts are closely connected to each other. Also, at this time, the pinion 8 of the motor 7 is inserted into the shaft hole 1.
0, it engages with the engaging internal teeth 9 in a manner that prevents relative rotation, and controls the rotation of the pinion 8 from the input side rotor 15.
At the same time, the external gear 13 of the output shaft 6 meshes with the internal gear 12 of the reducer 11, and the rotation of the output rotor 16 becomes able to be transmitted to the reducer 11. At this time, the external gear 13 and internal gear 12 mesh in the same state as the pinion 8 and internal gear.

In this embodiment, as described above, the motor mounting part 3 is connected to the output through the female fitting part 32 formed between the case body 14 and the cover body 19 and the four mounting holes 38, 38... The male fitting part 35 formed in the side cover part 25 and the four mounting holes 38, 38
Although the reducer mounting portions 4 are constructed by the following, it goes without saying that the configurations of the two mounting portions 3 and 4 are not limited to the above embodiments. In addition, 50,
50 is a snap spring, and in FIG. 3, 51 is an output shaft of the reducer 11.

Since the basic operations of the electromagnetic clutch mechanism 1 and the electromagnetic brake mechanism 2 are essentially the same as those of known mechanisms, their operations will only be briefly described. When both excitation coils 17 and 23 are not energized, they are in a neutral state, the rotation of the input rotor 15 is not transmitted to the output rotor 16, and both are in a free relationship. When only the excitation coil 17 of the first field member 18 is energized, the input side armature 28
The rotor 15 is attracted to the side and is pressed against the friction plate 22 provided on the rotor 15, and the two are frictionally coupled, so that the rotation of the input rotor 15 is transmitted to the output rotor 16, that is, the clutch is engaged. When only the excitation coil 23 of the second field member 24 is energized, the output side armature 30 is attracted toward the friction plate 31 of the second field member 24, and the two are frictionally coupled and the output side rotor 16 is braked.

FIG. 4 shows that the motor 7 and the speed reducer 11 are connected in series on both sides of the device A of the present invention having the above configuration.
An example will be shown in which these are used as a drive source transmission system for a transfer unit 45 that has a built-in cam mechanism and an operating end 44 that moves up and down and back and forth. As shown in this example, the drive source transmission system can be installed compactly using the side surface of the transfer unit 45.
Also, in this example, the flange portion 3 of the motor 7
9. Since the outer shape of the case 41 of the device A of the present invention and the case 41 of the reducer 11 are both the same square shape, the overall shape after they are assembled has a cohesive shape, which is convenient for handling and aesthetically pleasing. It's also excellent.

The device of the present invention is not only used by being directly connected to the motor 7 and the reducer 11 as shown in FIG. can be used. In this case, the external gear 1 of the output shaft 6
3 may be directly engaged with a gear provided on the input shaft of the actuating device.

(Effects of the Invention) Since the present invention has the above configuration and has the effects detailed in the (Function) section, it is suitable for constructing a compact unit consisting of a motor, a clutch/brake device, and a speed reducer. Therefore, it is possible to provide a clutch/brake device with a new structure, and to solve the problems of the conventional example.

Furthermore, when the present invention is combined with a motor and a speed reducer to form a unit, the work can be carried out smoothly and the axial dimension of the unit body can be minimized.

Further, the present invention can provide a clutch/brake device with excellent durability that can sufficiently withstand frequent engagement and engagement of the clutch.

[Brief explanation of the drawing]

Fig. 1 is a schematic sectional view showing an embodiment of the present invention, Fig. 2 is a perspective view specifically showing the same and showing each component in an exploded manner, and Fig. 3 is a diagram showing the device of the present invention, a motor, and a speed reducer. FIG. 4 is a perspective view showing the state in which each component shown in FIG. 3 is attached to the transfer unit, and FIGS.
The drawings are shown with the left and right sides reversed from those shown in FIG.
FIG. 5 is a perspective view of a conventional example, and FIG. 6 is a schematic side view of another conventional example. DESCRIPTION OF SYMBOLS 1... Electromagnetic clutch mechanism, 2... Electromagnetic brake mechanism, 3... Motor mounting part, 4... Reduction gear mounting part, 5... Input shaft, 6... Output shaft, 7... Motor, 8... Pinion , 9... engaging internal teeth, 10...
Shaft hole, 11...Reducer, 12...Internal gear, 13
...external gear.

Claims (1)

[Scope of Claims] 1. Between a motor having a pinion formed on the drive shaft and a reducer having an internal gear that engages with the pinion in an axially removable manner when connected in series with the motor. , a clutch/brake device that is removably connected, and includes a case that is removably connected to an end of the motor and an end of the reducer, and an electromagnetic clutch mechanism on the input shaft side, and an electromagnetic clutch mechanism on the input shaft side; a shaft-side electromagnetic brake mechanism disposed in the case, a shaft hole having an engaging internal tooth that engages with the pinion in an axial direction so as to be removably inserted in the input shaft;
When the case is coupled to the end of the motor,
The pinion and the engaging internal teeth are configured to engage with each other so as not to rotate relative to each other, and an external gear having the same shape as the pinion is provided on a portion of the output shaft that projects outward from the case, and the gear is connected to the reducer. When the case is connected to an end of the clutch, the external gear and the internal gear are configured to mesh in the same state as the pinion and the internal gear. Brake device.