JP5117278B2 - Free-rotating annular body type power transmission braking device - Google Patents

Description

  The present invention relates to a power transmission braking device that is interposed between an internal combustion engine or a motor and wheels of a vehicle, for example, and more specifically, the start and braking of the vehicle is smoothly and less generated by the action of a free rotating annular body. It is related with the technique improved so that it can be performed by.

  The inventors of the present invention have developed a brake device having a novel structure for braking the rotation of the rotating shaft in various transportations such as automobiles and railway vehicles, machine tools, etc. (See Patent Document 1).

  Referring to FIGS. 13 to 16, the structure of the brake device 1 according to the prior application will be outlined. For example, the input shaft 2 to which driving force is input from the transmission of an automobile is directly connected to the output shaft 4 by the action of the switching device 3. And the state of being connected to the output shaft 4 through the speed increasing planetary gear mechanism 5.

Further, as shown in FIG. 14, the rotational driving force output from the engine 101 of the automobile is shifted in the transmission 102, and then the brake built in the transfer case 103 connected to the transmission 102. It is transmitted to the propeller shaft 104 via the device 1.
Then, the rotational driving force input to the propeller shaft 104 is distributed to the left and right drive wheels 106L and 106R via a differential gear mechanism (not shown) incorporated after being decelerated in the final reduction gear 105.

  By the way, when the driver of the automobile stops the depression of the accelerator pedal and the automobile is traveling in inertia, the pair of left and right drive wheels 106L and 106R are connected to the output shaft 4 via the final reduction gear 105 and the propeller shaft 104. Is driven to rotate.

  At this time, as shown in FIG. 16, when the input shaft 2 and the output shaft 4 are directly connected by the switching means 3, the planetary carrier 5a connected to the input shaft 2 of the planetary gear mechanism 5 is Since it is rotationally driven, the planetary carrier 5a and the ring gear continuous portion 5b relatively rotate, and at the same time, the ring gear continuous portion 5b and the lid 9a of the casing 9 relatively rotate.

In this state, when the lever 8a of the pushing means 8 is swung, the push rod 8d is pushed into the casing 9 by the action of the cam plates 8b and 8c, and is provided at the tip thereof as shown in FIG. The friction body 8e presses the first annular body 6 against the planetary carrier 5a via the second annular body 7.
Accordingly, sliding friction is generated between the second annular body 7 that rotates integrally with the ring gear continuous portion 5b, and the first annular body 6 and the planetary carrier 5a. The carrier 5a is frictionally engaged, and the relative rotation between the ring gear of the planetary gear mechanism 5 and the planetary carrier is suppressed.

In other words, the brake device 1 functions as an overdrive device that enables direct drive traveling or overdrive traveling when the pair of left and right drive wheels 106L and 106R are driven by the rotational driving force output by the engine 101.
On the other hand, when the vehicle is coasting, it operates as a brake device that brakes the rotation of the pair of left and right drive wheels 106L and 106R by operating the lever 8a of the pushing means 8.

The braking force generated by the brake device 1 is equally distributed to the left and right drive wheels 106L and 106R by the differential gear mechanism built in the final reduction gear 105.
As a result, the left and right drive wheels 106L and 106R can be braked by the brake device 1, so that it is not necessary to provide a separate brake device for each of the drive wheels 106L and 106R.

Furthermore, the plurality of free-rotating annular bodies 6a, 6b, 6c, and 6d stacked in the axial direction provided in the first annular body 6 are arranged so that ones having high hardness and ones having low hardness are alternately arranged in the axial direction. It is installed.
As a result, when the pushing means 8 is pushed toward the planetary carrier 5a and compressed in the axial direction, the degree of familiarity between the adjacent annular members is different. They do not rotate together and rotate relative to each other at different rotational speeds.

Therefore, the plurality of free rotating annular bodies 6a, 6b, 6c, 6d of the first annular body 6 can smoothly absorb a large rotational speed difference between the planetary carrier 5a and the ring gear continuous portion 5b.
Furthermore, since the relative speed between the adjacent free-rotating annular bodies is small, the frictional heat generated between them is also small, so the amount of heat generated in the first annular body 6 is also small.
In addition, since there are many friction sliding surfaces between the planetary carrier 5a and the ring gear continuous portion 5b, the frictional force for frictionally engaging the planetary carrier 5a and the ring gear continuous portion 5b is increased. Can be made.

JP 2007-255695 A

By the way, the above-described conventional brake device 1 receives the driving force generated by the engine 101 via the transmission 102. Thus, the clutch or torque converter provided in the transmission 102 is responsible for receiving or blocking the driving force generated by the engine 101.
However, if the above-described brake device 1 has not only a braking function but also a clutch function for receiving or interrupting a driving force, the applicable range can be greatly expanded.

  Accordingly, an object of the present invention is to further improve the above-described prior art, and is a free freedom suitable for use in a vehicle, a machine tool, or the like having both a clutch function for transmitting or interrupting a driving force and a function for braking the rotation of an output shaft. An object of the present invention is to provide a rotary annular power transmission braking device.

The means described in claim 1 for solving the above problem is as follows.
A power transmission braking device (100) for transmitting a driving force from a driving force generating means to an output shaft and braking the rotation of the output shaft,
An inner annular disk (36a, 36b, 36c) that rotates integrally with the output shaft (12) so as to be displaceable in the axial direction of the output shaft (12);
A cylindrical member (33) disposed around the inner annular disk (36a, 36b, 36c) coaxially with the output shaft (12) and relatively rotatable.
An outer annular disc (35a-35d) that is supported on the inner peripheral surface of the cylindrical member (33) so as to be displaceable in the axial direction and rotates integrally with the cylindrical member (33);
A plurality of free-rotating annular bodies coaxial with the output shaft (12), which are interposed between the inner annular disks (36a, 36b, 36c) and the outer annular disks (35a-35d) so as to be relatively rotatable. 37),
A free rotating annular clutch mechanism (30) having
The inner annular disc (36a, 36b, 36c) or the outer annular disc (35a-35d) is pushed in the axial direction, and the inner annular disc (36a, 36b, 36c) and the outer annular disc (35a-35d) are pushed. ) Between the free rotating annular body (37) and frictionally engaging the pushing means (40) supported by the tubular member (33),
Braking means (60) for braking the rotation of the tubular member (33);
A driving side member (22) that rotates integrally with the driving force generating means;
The inner annular disc (36a, 36b, 36c) or the outer annular disc (35a-35d) is pushed in the axial direction, and the inner annular disc (36a, 36b, 36c) and the outer annular disc (35a-35d) are pushed. The second rotary means (50) supported by the cylindrical member (33), which is frictionally engaged by sandwiching the free-rotating annular body (37) between
The cam provided on the drive side member (22) is displaced radially outward with respect to the axis of the output shaft (12) as its rotational speed increases while rotating integrally with the drive side member (22). A centrifugal weight (41) that is displaced in the axial direction by the action of a surface, and
When the centrifugal weight (41) is displaced in the axial direction, the centrifugal weight (41) is frictionally engaged with the pushing means (40) to transmit the rotation of the driving side member (22) to the clutch mechanism (30), while The inner annular disk (36a, 36b, 36c) or the outer annular disk (35a to 35d) is configured to push in the axial direction.

That is, in the free rotation annular body type power transmission braking device (100) according to claim 1, the driving side member (22) is connected to driving force generating means such as an internal combustion engine or a motor of an automobile and rotates together. To do.
Then, when the rotational speed of the drive side member (22) increases when the driver of the automobile depresses the accelerator pedal, the centrifugal weight (41) is displaced to the outside in the radial direction and is provided on the drive side member (22). Is displaced in the axial direction by the action of the cam surface (22a) and frictionally engages with the pushing means (40) to rotate the cylindrical member (33) of the clutch mechanism (30) integrally with the inner annular disk. (36a, 36b, 36c) or the outer annular disc (35a to 35d) is pushed in the axial direction, and the free-rotating annular body (37) is sandwiched between the inner annular disc and the outer annular disc and frictionally engaged.
Then, since the cylindrical member (33) and the output shaft (12) are connected via the clutch mechanism (30), the driving force generated by the driving force generating means is output from the output shaft (12) to rotate the wheels of the automobile. It can be rotated.
At this time, the plurality of free rotating annular bodies (37) interposed between the inner annular disk and the outer annular disk smoothly absorb the relative rotation between the inner annular disk and the outer annular disk. The car can start smoothly.

On the other hand, when the driver of the car stops the depression of the accelerator pedal, the rotational speed of the drive side member (22) decreases, and the centrifugal weight (41) is displaced radially inward, so the centrifugal weight (41) and the pushing means When the frictional engagement with (40) is released, at that time, the inner annular disk or the outer annular disk is not pushed in the axial direction, and the clutch mechanism between the cylindrical member (33) and the output shaft (12) ( The connection via 30) is released.
Thereby, the automobile can travel by inertia.

On the other hand, when the driver of the automobile depresses the brake pedal, the braking means (60) is actuated to brake the rotation of the tubular member (33).
At the same time, the second pushing means (50) is operated to connect the cylindrical member (33) and the output shaft (12) via the clutch mechanism (30), so that the rotation of the output shaft (12) is braked. Thus, the rotation of the wheels of the automobile can be braked.
At this time, the plurality of free rotating annular bodies (37) interposed between the inner annular disk and the outer annular disk smoothly absorb the relative rotation between the inner annular disk and the outer annular disk. Not only can the automobile be stopped smoothly, but also the heat generated by braking can be suppressed.
Further, since the rotation of all the driving wheels can be braked by this free-rotating annular body type power transmission braking device (100), the overall structure can be simplified as compared with the case where each driving wheel is provided with a brake device individually. Can be.

The means described in claim 2 for solving the above problem is as follows.
A power transmission braking device (200) for transmitting a driving force from a driving force generating means to an output shaft and braking the rotation of the output shaft,
An inner annular disk (36a, 36b, 36c) that rotates integrally with the output shaft (12) so as to be displaceable in the axial direction of the output shaft (12);
A cylindrical member (33) disposed around the inner annular disk (36a, 36b, 36c) coaxially with the output shaft (12) and relatively rotatable.
An outer annular disc (35b-35d) that is supported on the inner peripheral surface of the cylindrical member (33) so as to be displaceable in the axial direction and rotates integrally with the cylindrical member (33);
A plurality of freely rotating annular bodies coaxial with the output shaft (12), which are interposed between the inner annular disks (36a, 36b, 36c) and the outer annular disks (35a, 35b) so as to be relatively rotatable. 37),
A free rotating annular clutch mechanism (30) having
The inner annular disc (36a, 36b, 36c) or the outer annular disc (35b-35d) is pushed in the axial direction, and the inner annular disc (36a, 36b, 36c) and the outer annular disc (35b-35d) are pushed. The second rotary means (50) supported by the cylindrical member (33), which is frictionally engaged by sandwiching the free-rotating annular body (37) between
Braking means (60) for braking the rotation of the tubular member (33);
A driving side member (22) that rotates integrally with the driving force generating means;
A second outer annular disk (73) that rotates integrally with the drive side member (22) and displaceably in the axial direction;
A second inner annular disk (72) rotating integrally with the tubular member (33);
A plurality of second freely rotating annular bodies (75a, 75b) coaxially and relatively rotatably interposed between the second inner annular disk (72) and the second outer annular disk (73);
While rotating integrally with the drive side member (22), it is displaced outward in the radial direction as its rotational speed increases, and is engaged with the cam surface provided on the drive side member (22) and displaced in the axial direction. A centrifugal weight (41),
The centrifugal weight (41) pushes the second outer annular disk (73) in the axial direction as its rotational speed increases, and the second outer annular disk (73) and the second inner annular disk (72). ) Between the second free-rotating annular bodies (75a, 75b) and the friction engagement with the second free-rotating annular bodies (75a, 75b).

That is, in the free rotating annular body type power transmission braking device (200) according to claim 2, when the rotational speed of the driving side member (22) increases when the driver of the automobile depresses the accelerator pedal, the centrifugal weight (41 ) Is displaced outward in the radial direction, and is displaced in the axial direction by the action of the cam surface (22a) provided on the drive side member (22), thereby pushing the second outer annular disc (73) in the axial direction. The free rotating annular body (75b) is held between the second inner annular disk (72) and frictionally engaged.
Then, since the drive side member (22) and the second inner annular disk (72) are frictionally engaged and rotate together, the drive side member (22) can rotationally drive the cylindrical member (33). .
At the same time, when the second pushing means (50) is operated electrically or hydraulically and the cylindrical member (33) and the output shaft (12) are connected via the clutch mechanism (30), the output shaft ( Since 12) is connected to the drive side member (22), the wheels of the automobile can be driven to rotate.
At this time, the plurality of free-rotating annular bodies (75) interposed between the second inner annular disk and the second outer annular disk and the inner annular disk and the outer annular disk are interposed. The plurality of free-rotating annular bodies (37) smoothly absorb relative rotation between the second inner annular disk and the second outer annular disk and between the inner annular disk and the outer annular disk, respectively. Can be started smoothly.

On the other hand, when the driver of the automobile depresses the brake pedal, the braking means (60) is actuated to brake the rotation of the tubular member (33).
At the same time, the second pushing means (50) is operated electrically or using hydraulic pressure, and the cylindrical member (33) and the output shaft (12) are connected via the clutch mechanism (30), so that the output is achieved. The rotation of the wheel of the vehicle can be braked by braking the rotation of the shaft (12).
At this time, the plurality of free-rotating annular bodies (37) interposed between the inner annular disk (36a, 36b, 36c) and the outer annular disk (35a, 35b) include an inner annular disk and an outer annular disk. Since the relative rotation between the two is smoothly absorbed, it is possible not only to smoothly stop the automobile but also to suppress the heat generated by braking.
Further, since the rotation of all the driving wheels can be braked by this free rotating annular body type power transmission braking device (200), the structure is simplified as compared with the case where the brakes are individually provided for each driving wheel. be able to.

Moreover, the means described in claim 3 for solving the above-described problem is as follows.
A power transmission braking device (300) for transmitting a driving force from a driving force generating means to an output shaft and braking the rotation of the output shaft,
An inner annular disk (36a, 36b, 36c) that rotates integrally with the output shaft (12) so as to be displaceable in the axial direction of the output shaft (12);
A cylindrical member (33) disposed around the inner annular disk (36a, 36b, 36c) coaxially with the output shaft (12) and relatively rotatable.
An outer annular disc (35b-35d) that is supported on the inner peripheral surface of the cylindrical member (33) so as to be displaceable in the axial direction and rotates integrally with the cylindrical member (33);
A plurality of free-rotating annular bodies coaxial with the output shaft (12), which are interposed between the inner annular disks (36a, 36b, 36c) and the outer annular disks (35b to 35d) so as to be relatively rotatable. 37),
A free rotating annular clutch mechanism (30) having
The inner annular disc (36a, 36b, 36c) or the outer annular disc (35b-35d) is pushed in the axial direction, and the inner annular disc (36a, 36b, 36c) and the outer annular disc (35b-35d) are pushed. The second rotary means (50) supported by the cylindrical member (33), which is frictionally engaged by sandwiching the free-rotating annular body (37) between
Braking means (60) for braking the rotation of the tubular member (33);
A driving side member (22) that rotates integrally with the driving force generating means;
When the rotation speed increases while rotating integrally with the drive side member (22), it is displaced radially outward, and is engaged with a cam surface provided on the drive side member (22) to be displaced in the axial direction. A centrifugal weight (41) to perform,
A second outer annular disk (73) that rotates integrally with the drive side member (22) so as to be displaceable in the axial direction;
A third inner annular disc (81) rotating integrally with the output shaft (12) so as to be displaceable in the axial direction;
A plurality of second freely rotating annular bodies (75a, 75b) coaxially and relatively rotatably interposed between the third inner annular disk (81) and the second outer annular disk (73); Prepared,
The centrifugal weight (41) pushes the second outer annular disc (73) in the axial direction, and between the second outer annular disc (73) and the third inner annular disc (81). The second free-rotating annular body (75a, 75b) is sandwiched and frictionally engaged.

That is, in the free rotating annular body type power transmission braking device (300) according to claim 3, when the rotational speed of the driving side member (22) increases when the driver of the automobile depresses the accelerator pedal, the centrifugal weight (41 ) Is displaced outward in the radial direction, and is displaced in the axial direction by the action of the cam surface (22a) provided on the drive side member (22), thereby pushing the second outer annular disc (73) in the axial direction. The free rotating annular body (75b) is sandwiched between the third inner annular disk (81) and the second outer annular disk (73) and frictionally engaged.
Then, since the drive side member (22) and the third inner annular disc (81) are frictionally engaged and rotate integrally, the drive side member (22) can rotationally drive the output shaft (12).
At this time, a plurality of free-rotating annular bodies (75) interposed between the third inner annular disk (81) and the second outer annular disk (73) are connected to the third inner annular disk and the second outer annular disk. Since the relative rotation with the disk is smoothly absorbed, the automobile can be started smoothly.

On the other hand, when the driver of the automobile depresses the brake pedal, the braking means (60) is activated to brake the rotation of the tubular member (33).
At the same time, the second pushing means (50) is operated electrically or using hydraulic pressure, and the cylindrical member (33) and the output shaft (12) are connected via the clutch mechanism (30), so that the output is achieved. The rotation of the wheel of the vehicle can be braked by braking the rotation of the shaft (12).
At this time, the plurality of free rotating annular bodies (37) interposed between the inner annular discs (36a, 36b, 36c) and the outer annular discs (35b to 35d) include an inner annular disc and an outer annular disc. Since the relative rotation between the two is smoothly absorbed, it is possible not only to smoothly stop the automobile but also to suppress the heat generated by braking.
Furthermore, since the rotation of all the driving wheels can be braked by this free-rotating annular body type power transmission braking device (300), the structure is simplified as compared with the case where brakes are individually provided for each driving wheel. be able to.

The means described in claim 4 for solving the above problem is
A power transmission braking device (400) for transmitting a driving force from a driving force generating means to an output shaft and braking the rotation of the output shaft,
An inner annular disk (36a, 36b, 36c) that rotates integrally with the output shaft (12) so as to be displaceable in the axial direction of the output shaft (12);
A cylindrical member (which is disposed around the inner annular disk (36a, 36b, 36c) coaxially with the output shaft (12) and supported by a stationary portion which rotatably supports the output shaft (12) ( 33),
An outer annular disc (35b-35d) that is supported on the inner peripheral surface of the cylindrical member (33) so as to be displaceable in the axial direction and rotates integrally with the cylindrical member (33);
A plurality of free-rotating annular bodies coaxial with the output shaft (12), which are interposed between the inner annular disks (36a, 36b, 36c) and the outer annular disks (35b to 35d) so as to be relatively rotatable. 37),
A second free rotating annular clutch mechanism (90) having
The inner annular disc (36a, 36b, 36c) or the outer annular disc (35b-35d) is pushed in the axial direction, and the inner annular disc (36a, 36b, 36c) and the outer annular disc (35b-35d) are pushed. The second rotary means (50) supported by the cylindrical member (33), which is frictionally engaged with the free-rotating annular body (37) sandwiched between
A driving side member (22) that rotates integrally with the driving force generating means;
When the rotation speed increases while rotating integrally with the drive side member (22), it is displaced radially outward, and is engaged with a cam surface provided on the drive side member (22) to be displaced in the axial direction. A centrifugal weight (41) to perform,
A second outer annular disk (73) that rotates integrally with the drive side member (22) so as to be displaceable in the axial direction;
A third inner annular disc (81) rotating integrally with the output shaft (12) so as to be displaceable in the axial direction;
A plurality of second freely rotating annular bodies (75a, 75b) coaxially and relatively rotatably interposed between the third inner annular disk (81) and the second outer annular disk (73); Prepared,
The centrifugal weight (41) pushes the second outer annular disc (73) in the axial direction, and between the second outer annular disc (73) and the third inner annular disc (81). The second free-rotating annular body (75a, 75b) is sandwiched and frictionally engaged.

That is, in the free rotating annular body type power transmission braking device (400) according to claim 4, when the rotational speed of the driving side member (22) increases when the driver of the automobile depresses the accelerator pedal, the centrifugal weight (41 ) Is displaced in the axial direction by the action of the cam surface (22a) provided on the drive side member (22) while being displaced radially outward, and the second outer annular disk (73) is pushed in the axial direction, A free rotating annular body (75b) is sandwiched and frictionally engaged between the third inner annular disk (81) and the second outer annular disk (73).
Then, since the drive side member (22) and the third inner annular disc (81) are frictionally engaged and rotate integrally, the drive side member (22) can rotationally drive the output shaft (12).
At this time, a plurality of free-rotating annular bodies (75) interposed between the third inner annular disk (81) and the second outer annular disk (73) are connected to the third inner annular disk and the second outer annular disk. Since the relative rotation with the disk is smoothly absorbed, the automobile can be started smoothly.

On the other hand, when the driver of the automobile depresses the brake pedal, the second pushing means (50) is operated electrically or hydraulically, and the stationary tubular member (33) and the output shaft (12) are moved. Since it is connected via the clutch mechanism (90), it is possible to brake the rotation of the wheel of the automobile by braking the rotation of the output shaft (12).
At this time, the plurality of free rotating annular bodies (37) interposed between the inner annular discs (36a, 36b, 36c) and the outer annular discs (35b to 35d) include an inner annular disc and an outer annular disc. Since the relative rotation between the two is smoothly absorbed, it is possible not only to smoothly stop the automobile but also to suppress the heat generated by braking.
Further, since the rotation of all the driving wheels can be braked by this free-rotating annular body type power transmission braking device (400), the structure is simplified as compared with the case where the brakes are individually provided for each driving wheel. be able to.

  As is apparent from the above description, according to the present invention, free rotation suitable for use in vehicles, machine tools, etc., having both a clutch function for transmitting or interrupting driving force and a function for braking the rotation of the output shaft. An annular body type power transmission braking device can be provided.

Hereinafter, with reference to FIGS. 1-9, each embodiment of the free rotation annular body type power transmission braking device which concerns on this invention is described in detail.
In the following description, the direction in which the axis of the output shaft 12 extends is referred to as “axial direction”, and the direction perpendicular thereto is referred to as “radial direction”.
Further, the same portions are denoted by the same reference numerals, and redundant description is omitted.

1st Embodiment First, with reference to FIGS. 1-3, the free rotation annular body type power transmission braking device of 1st Embodiment corresponding to Claim 1 is demonstrated.

This free-rotating annular body type power transmission braking device 100 is, for example, a case 10 that is fixed to a vehicle engine body or an electric motor housing using a plurality of bolts B, and is rotatably supported by the case 10 via a bearing 11. The output shaft 12 is provided.
Then, the left end portion of the output shaft 12 shown in the figure is rotated relative to a cylindrical input member 21 connected to driving force generating means such as a crankshaft of an automobile engine or an output shaft of an electric motor via a needle bearing 13. It is supported freely.
In addition, a flywheel (drive side member) 22 is fastened to the input member 21 by a bolt so as to rotate integrally.
Further, an annular connecting member 23 is coaxially fastened to the flywheel 22 and supports a pushing plate 43 of the pushing means 40 described below so as to be displaceable in the axial direction.

The clutch mechanism 30 is for transmitting the rotation of the flywheel 22 to the output shaft 12, and the housing 31 is supported by bearings 32a and 32b so as to be rotatable relative to the output shaft 12.
Further, outer annular disks 35a to 35d that rotate integrally with the cylindrical portion 33 are attached to the inner peripheral surface of the cylindrical portion 33 constituting the housing 31 so as to be displaceable in the axial direction.
Further, inner annular disks 36a, 36b, 36c that rotate integrally with the output shaft 12 are attached to the outer peripheral surface of the output shaft 12 so as to be displaceable in the axial direction.
Further, a free-rotating annular body 37 is interposed in each gap between the outer annular disks 35a to 35d and the inner annular disks 36a, 36b, 36c so as to be relatively rotatable.

A pushing means 40 is interposed between the flywheel 22 and the clutch mechanism 30.
The pusher 40 pushes the outer annular disk 35a in the axial direction, and sandwiches the free-rotating annular body 37 between the inner annular disks 36a to 36c and the outer annular disks 35a to 35d for frictional engagement. It has a centrifugal weight 41 that rotates integrally with the flywheel 22.
The centrifugal weight 41 is composed of a plurality of members divided in the circumferential direction, and is always urged radially inward by an annular spring 42.
Thereby, the centrifugal weight 41 is displaced radially outward by the action of centrifugal force when the rotational speed of the flywheel 22 is increased, but the centrifugal weight 41 is directed toward the clutch mechanism 30 by the action of the cam surface 22a provided on the flywheel 22. To move in the axial direction.

Then, the annular push plate 43 supported so as to be displaceable in the axial direction on the outer peripheral surface of the support member 23 and to rotate integrally with the flywheel 22 is pushed by the centrifugal weight 41 and moved in the axial direction. Displace.
When the annular friction body 45 supported by the plurality of push pins 44 penetrating the housing 31 in the axial direction and the push plate 43 are frictionally engaged, the rotation of the flywheel 22 is caused by the support member 23. Then, it is transmitted to the housing 31 of the clutch mechanism 30 via the push plate 43, the friction body 45, and the push pin 45, and the housing 31 rotates integrally with the flywheel 22.

On the other hand, the front ends of the plurality of push pins 44 are implanted in the inner annular disk 35 a inside the housing 31.
Thus, when the centrifugal weight 41 is displaced in the axial direction, the outer annular disc 35a is pushed in the axial direction, so that the free-rotating annular body 37 is frictionally engaged between the outer annular discs 35a to 35d and the inner annular discs 36a to 36c. As a result, the housing 31 of the clutch mechanism 30 and the output shaft 12 rotate together.

On the other hand, a second pushing means 50 is interposed between the housing 31 of the clutch mechanism 30 and the cover 10 a of the case 10.
The second pushing means 50 pushes the outer annular disk 35d in the axial direction of the output shaft 12, and frictionally engages the free-rotating annular body 37 between the inner annular disks 36a to 36c and the outer annular disks 35a to 35d. In combination, the housing 31 of the clutch mechanism 30 and the output shaft 12 are rotated together.
Therefore, a pair of wedge-shaped members 51 and 52 are supported on the cover 10 a of the case 10.
When one wedge-shaped member 51 is displaced radially inward using hydraulic pressure, the other wedge member 52 is displaced in the axial direction.
Then, the wedge member 52 is frictionally engaged with an annular friction body 54 supported by a plurality of push pins 53 penetrating the housing 31 in the axial direction.

Further, the tips of the plurality of push pins 53 are implanted in the outer annular disk 35 d of the clutch mechanism 30.
Thus, when the second pushing means 50 is operated to displace the outer annular disc 35d in the axial direction, the free-rotating annular body 37 is frictionally engaged between the outer annular discs 35a to 35d and the inner annular discs 36a to 36c. Therefore, the housing 31 of the clutch mechanism 30 and the output shaft 12 can be rotated integrally.

Further, a band brake (braking means) 60 is disposed around the cylindrical portion 33 in the housing 31 of the clutch mechanism 30.
The band brake 60 has a braking band 61 wound around the outer peripheral surface of the cylindrical portion 33 over almost the entire circumference, and a hydraulic cylinder (not shown) for firmly winding the braking band 61 around the outer peripheral surface of the cylindrical portion 33. is doing.
As a result, when the driver of the automobile depresses the brake pedal, the hydraulic pressure is applied to the hydraulic cylinder and the braking band 61 is tightly wound around the outer peripheral surface of the cylindrical portion 33. Therefore, the housing 31 and the case 10 of the clutch mechanism 30 The relative rotation between the two can be braked and the housing 31 can be fixed so as not to rotate.

  Next, with reference to FIG. 2 and FIG. 3, the operation of the free rotating annular body type power transmission braking device 10 of the first embodiment having the above-described structure will be described.

When the driver of the automobile depresses the accelerator pedal and the rotational speed of the flywheel 22 increases, the centrifugal weight 41 is displaced in the axial direction by the action of centrifugal force, and the pushing means 40 is operated.
Then, the flywheel 22 and the cylindrical portion 33 of the clutch mechanism 30 rotate together, and a plurality of free rotating annular bodies 37 are sandwiched between the inner annular disks 36a to 36c and the outer annular disks 35a to 35d, respectively. Frictionally engaged.
Thereby, since the cylindrical member 33 and the output shaft 12 are connected via the clutch mechanism 30, as shown by the arrow in FIG. 2, rotation of the flywheel 22 is output from the output shaft 12 to The wheel can be driven to rotate.
At this time, the plurality of free rotating annular bodies 37 interposed between the inner annular disks 36a to 36c and the outer annular disks 35a to 35d are provided between the inner annular disks 36a to 36c and the outer annular disks 35a to 35d. Since the relative rotation of the vehicle is absorbed smoothly, the vehicle can be started smoothly.

When the driver of the automobile stops the depression of the accelerator pedal, the rotational speed of the flywheel 22 decreases and the centrifugal weight 41 is displaced inward in the radial direction, so that the engagement between the centrifugal weight 41 and the pushing means 40 is released. At that time, the connection between the cylindrical member 33 and the output shaft 12 is released.
Thereby, the automobile can travel by inertia.

When the driver of the automobile depresses the brake pedal, the band brake 60 is actuated to brake the rotation of the tubular member 33, and at the same time, the second pushing means 50 is actuated to actuate the tubular member 33 and the output shaft 12 as a clutch. It is connected via the mechanism 30.
As a result, as indicated by arrows in FIG. 3, the rotation of the output shaft 12 can be braked to brake the rotation of the wheels of the automobile.
At this time, the plurality of free rotating annular bodies 37 interposed between the inner annular disks 36a to 36c and the outer annular disks 35a to 35d are provided between the inner annular disks 36a to 36c and the outer annular disks 35a to 35d. Since the relative rotation of the vehicle is absorbed smoothly, not only can the automobile be stopped smoothly, but also the heat generated by braking can be suppressed.
Further, since the rotation of all the driving wheels can be braked by this free-rotating annular body type power transmission braking device 100, the overall structure is simplified compared to the case where each driving wheel is provided with a brake device individually. can do.

2nd Embodiment Next, with reference to FIGS. 4-6, the free-rotation annular body type power transmission braking device of 2nd Embodiment corresponding to Claim 2 is demonstrated.

In the apparatus 100 according to the first embodiment described above, the driving force is transmitted from the flywheel 22 to the clutch mechanism 30 by the frictional engagement between the centrifugal weight 41 and the pushing means 40.
On the other hand, in the device 200 of the second embodiment, the second inner annular disk 72, the second outer annular disk 73, and the second intermediate part of the path for transmitting the driving force from the flywheel 22 to the clutch mechanism 30. A starting clutch portion 70 having free-rotating annular bodies 75a and 75b is interposed.

More specifically, the housing 31 of the clutch mechanism 30 is attached with the second inner annular disk 72 of the starting clutch portion 70 so as to rotate integrally.
A continuous member 25 having a second cylindrical member 24 and a cam surface 25a is provided at the outer peripheral end of the flywheel 22. A second outer annular disc 73 is attached to the inner peripheral surface of the second cylindrical member 24 so as to be displaceable in the axial direction and integrally rotate. The second outer annular disc 73 is always urged in the axial direction by the coil spring 74 so as to be separated from the flywheel 22.
Further, in the gaps between the second inner annular disc 72, the second outer annular disc 73 and the flywheel 22, second free-rotating annular bodies 75a and 75b are interposed, respectively.

As a result, when the rotational speed of the flywheel 22 increases when the driver of the automobile depresses the accelerator pedal, the centrifugal weight 41 is displaced in the axial direction, and the second outer annular disk 73 resists the biasing force of the coil spring 74. Is pushed in the axial direction, and the second free-rotating annular bodies 75a and 75b are sandwiched between the flywheel 22 and the second inner annular disc 72 and frictionally engaged.
Then, since the flywheel 22 and the second inner annular disk 72 are frictionally engaged and rotate integrally, the flywheel 22 can rotationally drive the cylindrical member 33 of the clutch mechanism 30.

  At the same time, when the second pushing means 50 is operated electrically or using hydraulic pressure, and the cylindrical member 33 and the output shaft 12 are connected via the clutch mechanism 30, as shown by the arrows in FIG. Driving force is transmitted from the flywheel 22 to the output shaft 12, and the wheels of the automobile can be rotationally driven.

At this time, the second free rotation annular bodies 75a and 75b interposed between the second inner annular disk 72 and the flywheel 22 and the second outer annular disk 73 are connected to the flywheel 22 and the second inner annular disk 72. Each absorbs the relative rotation smoothly.
At the same time, a plurality of free rotating annular bodies 37 interposed between the inner annular disks 36a to 36c and the outer annular disks 35b to 35d of the clutch mechanism 30 are provided between the cylindrical member 33 and the output shaft 12. Since each rotation is absorbed smoothly, the car can be started smoothly.

When the driver of the automobile depresses the brake pedal, the band brake 60 is actuated to brake the rotation of the tubular member 33, and at the same time, the second pushing means 50 is actuated to actuate the tubular member 33 and the output shaft 12 as a clutch. It is connected via the mechanism 30.
Thereby, as shown by the arrow in FIG. 6, it is possible to brake the rotation of the wheel of the automobile by braking the rotation of the output shaft 12.
At this time, the plurality of free rotating annular bodies 37 interposed between the inner annular disks 36a to 36c and the outer annular disks 35b to 35d are provided between the inner annular disks 36a to 36c and the outer annular disks 35b to 35d. Since the relative rotation of the vehicle is absorbed smoothly, not only can the automobile be stopped smoothly, but also the heat generated by braking can be suppressed.
Furthermore, since the rotation of all the driving wheels can be braked by the free-rotating annular body type power transmission braking device 200, the overall structure is simplified compared to the case where each driving wheel is provided with a brake device individually. can do.

Third Embodiment Next, with reference to FIGS. 7 to 9, a free-rotating annular body type power transmission braking device according to a third embodiment corresponding to claim 3 will be described.

In the device 200 of the second embodiment described above, the second inner annular disk 72 of the starting clutch portion 70 is connected to the housing 31 of the clutch mechanism 30.
On the other hand, in the device 300 of the third embodiment, the third inner annular disk 81 of the starting clutch portion 80 is connected to the output shaft 12 so as to be displaceable in the axial direction and integrally rotate. Yes.

More specifically, a continuous member 25 having a second cylindrical member 24 and a cam surface 25a is provided at the outer peripheral end of the flywheel 22. A second outer annular disc 73 is attached to the inner peripheral surface of the second cylindrical member 24 so as to be displaceable in the axial direction and integrally rotate. The second outer annular disc 73 is always urged in the axial direction by the coil spring 74 so as to be separated from the flywheel 22.
A third inner annular disk 81 is connected to the output shaft 12 so as to be displaceable in the axial direction and rotate integrally therewith.
Further, second free-rotating annular bodies 75a and 75b are interposed in the gaps between the third inner annular disk 81, the second outer annular disk 73, and the flywheel 22, respectively.

As a result, when the rotational speed of the flywheel 22 increases when the driver of the automobile depresses the accelerator pedal, the centrifugal weight 41 is displaced in the axial direction, and the second outer annular disk 73 resists the biasing force of the coil spring 74. Is pushed in the axial direction, and the second free-rotating annular bodies 75a and 75b are sandwiched between the flywheel 22 and the third inner annular disc 81 and frictionally engaged with each other.
Then, the flywheel 22 and the third inner annular disc 81 are frictionally engaged and rotate integrally, so that the output shaft 12 can be rotationally driven by the flywheel 22 as indicated by an arrow in FIG. .

  At this time, the second free rotating annular bodies 75a and 75b interposed between the third inner annular disc 81 and the flywheel 22 and the second outer annular disc 73 are connected to the flywheel 22 and the third inner annular disc 81. Since the relative rotation between each of the two is smoothly absorbed, the vehicle can be started smoothly.

When the driver of the automobile depresses the brake pedal, the band brake 60 is actuated to brake the rotation of the tubular member 33, and at the same time, the second pushing means 50 is actuated to actuate the tubular member 33 and the output shaft 12 as a clutch. It is connected via the mechanism 30.
As a result, as indicated by arrows in FIG. 9, the rotation of the output shaft 12 can be braked to brake the rotation of the wheels of the automobile.
At this time, the plurality of free rotating annular bodies 37 interposed between the inner annular disks 36a to 36c and the outer annular disks 35b to 35d are provided between the inner annular disks 36a to 36c and the outer annular disks 35b to 35d. Since the relative rotation of the vehicle is absorbed smoothly, not only can the automobile be stopped smoothly, but also the heat generated by braking can be suppressed.
Further, since the rotation of all the driving wheels can be braked by the free-rotating annular body type power transmission braking device 300, the overall structure is simplified as compared with the case where each driving wheel is provided with a brake device individually. can do.

4th Embodiment Next, with reference to FIGS. 10-12, the free-rotation annular body type power transmission braking device of 4th Embodiment corresponding to Claim 4 is demonstrated.

In the apparatus 300 of the third embodiment described above, the rotation of the cylindrical member 33 is braked using the band brake 60.
On the other hand, in the apparatus 400 of the fourth embodiment, the cylindrical member 33 of the second clutch mechanism 90 is supported by the case 10 and has a structure that does not rotate relative to the output shaft 12 at all.
Further, the band brake 60 for braking the rotation of the cylindrical member 33 is removed.

More specifically, the disc-shaped portion 91 supporting the cylindrical portion 33 of the housing 31 of the second clutch mechanism 90 has its outer peripheral portion fixed between the case 10 and the lid body 10a.
As a result, unlike the first to third embodiments described above, the housing 31 of the second clutch mechanism 90 is supported by the main body of an automobile engine or electric motor and does not rotate at all with respect to the output shaft 12.
Therefore, the band brake 60 for braking the rotation of the cylindrical member 33 is not provided.

When the rotational speed of the flywheel 22 increases when the driver of the automobile depresses the accelerator pedal, the centrifugal weight 41 is displaced in the axial direction, and the second outer annular disk 73 is moved in the axial direction against the urging force of the coil spring 74. The second free-rotating annular bodies 75a and 75b are sandwiched between the flywheel 22 and the third inner annular disc 81 and frictionally engaged with each other.
Then, since the flywheel 22 and the third inner annular disk 81 are frictionally engaged and rotate integrally, the output shaft 12 can be rotationally driven by the flywheel 22 as indicated by an arrow in FIG. .
At this time, the second free rotating annular bodies 75a and 75b interposed between the third inner annular disc 81 and the flywheel 22 and the second outer annular disc 73 are connected to the flywheel 22 and the third inner annular disc 81. Since the relative rotation between each of the two is smoothly absorbed, the vehicle can be started smoothly.

Further, when the driver of the automobile depresses the brake pedal, the second pushing means 50 is activated and the cylindrical member 33 and the output shaft 12 are connected via the second clutch mechanism 90.
At this time, since the cylindrical member 33 is supported by the case 10 and is stationary, as shown by the arrow in FIG. 12, the rotation of the output shaft 12 can be braked to brake the rotation of the wheels of the automobile. it can.
A plurality of free rotating annular bodies 37 interposed between the inner annular disks 36a to 36c and the outer annular disks 35b to 35d are provided between the inner annular disks 36a to 36c and the outer annular disks 35b to 35d. Since the relative rotation is smoothly absorbed, not only can the automobile be stopped smoothly, but also the heat generated by braking can be suppressed.
Further, since the rotation of all the driving wheels can be braked by the free-rotating annular body type power transmission braking device 400, the overall structure is simplified compared to the case where each driving wheel is provided with a brake device individually. can do.

As mentioned above, although each embodiment of the free rotation annular body type power transmission braking device concerning the present invention was described in detail, it cannot be overemphasized that the present invention is not limited by the embodiment mentioned above and various changes are possible. .
For example, in each of the above-described embodiments, the case where the motor is mounted on an automobile engine or an electric motor has been described as an example. However, it goes without saying that the apparatus of the present invention is not limited to an automobile but can be applied to a machine tool.

The half section view showing typically the power transmission braking device of a 1st embodiment. FIG. 2 is a half sectional view schematically showing a power transmission state of the apparatus shown in FIG. 1. FIG. 2 is a half sectional view schematically showing a braking state of the device shown in FIG. 1. The half sectional view which shows typically the power transmission braking device of 2nd Embodiment. FIG. 5 is a half sectional view schematically showing a power transmission state of the apparatus shown in FIG. 4. FIG. 5 is a half sectional view schematically showing a braking state of the device shown in FIG. 4. The half sectional view which shows typically the power transmission braking device of 3rd Embodiment. FIG. 8 is a half sectional view schematically showing a power transmission state of the apparatus shown in FIG. 7. FIG. 8 is a half sectional view schematically showing a braking state of the device shown in FIG. 7. The half sectional view which shows typically the power transmission braking device of 4th Embodiment. FIG. 11 is a half sectional view schematically showing a power transmission state of the apparatus shown in FIG. 10. FIG. 11 is a half sectional view schematically showing a braking state of the apparatus shown in FIG. 10. The whole perspective view which shows the conventional apparatus. The top view shown in the state which applied the apparatus shown in FIG. 13 to the vehicle. FIG. 14 is a half sectional view for explaining the operation of the apparatus shown in FIG. 13. FIG. 14 is a half sectional view for explaining the operation of the apparatus shown in FIG. 13.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Conventional apparatus 10 Case 11 Bearing 12 Output shaft 22 Flywheel (drive side member)
30 Clutch mechanism 35 Outer annular disk 36 Inner annular disk 37 Free-rotating annular body 40 Pushing means 41 Centrifugal weight 50 Second pushing means 51,52 Wedge-like member 60 Braking means 70 Starting clutch part 72 Second inner annular disk 73 Second outer annular disc 75 Second free-rotating annular body 80 Starting clutch portion 81 Third inner annular disc 90 Second clutch mechanism 100 Power transmission braking device 200 of the first embodiment Power transmission braking device 300 of the second embodiment Power transmission braking device 400 according to the third embodiment Power transmission braking device according to the fourth embodiment

Claims (4)

A power transmission braking device that transmits driving force from the driving force generating means to the output shaft and brakes rotation of the output shaft,
An inner annular disc that rotates integrally with the output shaft so as to be displaceable in the axial direction of the output shaft;
A cylindrical member disposed around the inner annular disk coaxially with the output shaft and relatively rotatable;
An outer annular disk that is supported on the inner peripheral surface of the cylindrical member so as to be displaceable in the axial direction and rotates integrally with the cylindrical member;
A plurality of free-rotating annular bodies coaxial with the output shaft, which are interposed between the inner annular disk and the outer annular disk so as to be relatively rotatable;
A free-rotating annular body-type clutch mechanism,
The cylindrical member that pushes the inner annular disc or the outer annular disc in the axial direction and frictionally engages the free rotating annular body between the inner annular disc and the outer annular disc. Supported pushing means;
Braking means for braking rotation of the tubular member;
A driving side member that rotates integrally with the driving force generating means;
The cylindrical member that pushes the inner annular disc or the outer annular disc in the axial direction and frictionally engages the free rotating annular body between the inner annular disc and the outer annular disc. Supported second pushing means;
As the rotational speed increases while rotating integrally with the drive side member, the output side shaft is displaced radially outward with respect to the axis of the output shaft, and the cam surface provided on the drive side member is displaced in the axial direction. A centrifugal weight, and
When the centrifugal weight is displaced in the axial direction, the centrifugal disc is frictionally engaged with the pushing means to transmit the rotation of the driving side member to the clutch mechanism, while the inner annular disc or the outer annular disc is moved in the axial direction. A free-rotating annular body type power transmission braking device, characterized in that it is configured to be pushed to the right. A power transmission braking device that transmits driving force from the driving force generating means to the output shaft and brakes rotation of the output shaft,
An inner annular disc that rotates integrally with the output shaft so as to be displaceable in the axial direction of the output shaft;
A cylindrical member disposed around the inner annular disk coaxially with the output shaft and relatively rotatable;
An outer annular disk that is supported on the inner peripheral surface of the cylindrical member so as to be displaceable in the axial direction and rotates integrally with the cylindrical member;
A plurality of free-rotating annular bodies coaxial with the output shaft, which are interposed between the inner annular disk and the outer annular disk so as to be relatively rotatable;
A free-rotating annular body-type clutch mechanism,
The cylindrical member that pushes the inner annular disc or the outer annular disc in the axial direction and frictionally engages the free rotating annular body between the inner annular disc and the outer annular disc. Supported second pushing means;
Braking means for braking rotation of the tubular member;
A driving side member that rotates integrally with the driving force generating means;
A second outer annular disc that rotates integrally with the drive-side member and displaceably in the axial direction;
A second inner annular disk that rotates integrally with the tubular member;
A plurality of second free-rotating annular bodies coaxially and relatively rotatably interposed between the second inner annular disk and the second outer annular disk;
A centrifugal weight that rotates integrally with the drive side member and displaces radially outward as the rotational speed increases, and engages with a cam surface provided on the drive side member to displace in the axial direction. Prepared,
The centrifugal weight pushes the second outer annular disk in the axial direction as its rotational speed increases, and the second free rotating annular body is between the second outer annular disk and the second inner annular disk. A free-rotating annular body type power transmission braking device characterized in that it is configured so as to be frictionally engaged by pinching the shaft. A power transmission braking device that transmits driving force from the driving force generating means to the output shaft and brakes rotation of the output shaft,
An inner annular disc that rotates integrally with the output shaft so as to be displaceable in the axial direction of the output shaft;
A cylindrical member disposed around the inner annular disk coaxially with the output shaft and relatively rotatable;
An outer annular disk that is supported on the inner peripheral surface of the cylindrical member so as to be displaceable in the axial direction and rotates integrally with the cylindrical member;
A plurality of free-rotating annular bodies coaxial with the output shaft, which are interposed between the inner annular disk and the outer annular disk so as to be relatively rotatable;
A free-rotating annular body-type clutch mechanism,
The cylindrical member that pushes the inner annular disc or the outer annular disc in the axial direction and frictionally engages the free rotating annular body between the inner annular disc and the outer annular disc. Supported second pushing means;
Braking means for braking rotation of the tubular member;
A driving side member that rotates integrally with the driving force generating means;
A centrifugal weight that rotates integrally with the drive-side member and displaces radially outward when the rotational speed increases, and engages with a cam surface provided on the drive-side member and is displaced in the axial direction;
A second outer annular disc that rotates integrally with the drive side member so as to be displaceable in the axial direction;
A third inner annular disk that rotates integrally with the output shaft so as to be displaceable in the axial direction;
A plurality of second free-rotating annular bodies disposed coaxially and relatively rotatably between the third inner annular disk and the second outer annular disk;
With
The centrifugal weight pushes the second outer annular disc in the axial direction, and sandwiches the second free rotating annular body between the second outer annular disc and the third inner annular disc, thereby engaging the frictional force. A freely rotating annular body type power transmission braking device characterized by being configured to be combined. A power transmission braking device that transmits driving force from the driving force generating means to the output shaft and brakes rotation of the output shaft,
An inner annular disc that rotates integrally with the output shaft so as to be displaceable in the axial direction of the output shaft;
A cylindrical member disposed around the inner annular disk and coaxially with the output shaft, and supported by a stationary portion that rotatably supports the output shaft;
An outer annular disk that is supported on the inner peripheral surface of the cylindrical member so as to be displaceable in the axial direction and rotates integrally with the cylindrical member;
A plurality of free-rotating annular bodies coaxial with the output shaft, which are interposed between the inner annular disk and the outer annular disk so as to be relatively rotatable;
A second free-rotating annular body-type clutch mechanism having
The cylindrical member that pushes the inner annular disc or the outer annular disc in the axial direction and frictionally engages the free rotating annular body between the inner annular disc and the outer annular disc. Supported second pushing means;
A driving side member that rotates integrally with the driving force generating means;
A centrifugal weight that rotates integrally with the drive-side member and displaces radially outward when the rotational speed increases, and engages with a cam surface provided on the drive-side member and is displaced in the axial direction;
A second outer annular disc that rotates integrally with the drive side member so as to be displaceable in the axial direction;
A third inner annular disk that rotates integrally with the output shaft so as to be displaceable in the axial direction;
A plurality of second free-rotating annular members that are coaxially and relatively rotatably interposed between the third inner annular disc and the second outer annular disc;
The centrifugal weight pushes the second outer annular disc in the axial direction, and sandwiches the second free rotating annular body between the second outer annular disc and the third inner annular disc, thereby engaging the frictional force. A freely rotating annular body type power transmission braking device characterized by being configured to be combined.

Images