JPS5817150Y2 - Transmission switching body actuating device for forward/reverse transmission transmission - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a rotation direction switching actuating device in a forward/reverse transmission mission such as a marine reduction/reversing gear.

In the above-mentioned forward and reverse transmission transmission, a transmission switching body is provided between a forward rotation gear train and a reverse rotation gear train that are installed in parallel at a predetermined interval inside a mission case body so that it can be slid in the axial direction by an operating mechanism. This transmission switching body is configured to be selectively coupled to either a forward or reverse gear train to bring it into a transmission state, or to switch to a neutral state in which it is not coupled to any gear train. In mechanisms, due to the tolerances and accumulation of component parts during manufacture and assembly, the strokes for the transmission switching body to connect and disconnect from each gear train inevitably vary, and even during continued use, there is wear on the connection and disconnection parts. and the stroke changes,
Therefore, in conventional devices of the same type, it is necessary to finely adjust the stroke to the appropriate stroke by incorporating an adjusting member in the assembly process, or to adjust the operating system for connecting and disconnecting as expected. Although a mechanism is provided to adjust the stroke, this method makes assembly work extremely difficult, and when used, complicated adjustment operations must be repeated each time wear progresses, resulting in production problems. However, there are fatal drawbacks in all aspects of use and maintenance.

Therefore, the present invention was implemented with the aim of obtaining a transmission switching body actuating device for a forward/reverse transmission transmission that eliminates all of these difficulties. Even if there is tolerance accumulation or wear during use, it can always be performed automatically and reliably.

Hereinafter, this will be explained in detail based on a specific example shown in the drawings.The case body 1 consists of a main body 1a and a lid body 1b, and rotatably supports a human power shaft 4 and a clutch shaft 5 by bearings 2 and 3. In addition, the idle shaft 6 is also supported, and the input shaft 4 is connected to the drive shaft 8 via the damper 7, and the clutch shaft 5 is located on the outer protrusion of the case body 1 and is connected to the driven shaft via the joint 9. Connect with 10.

A forward/reverse gear mechanism is housed inside the case body 1 of each shaft 4, 5.6, and this is constructed as follows.The input shaft 4 is provided with helical teeth in the imaginary line direction at appropriate intervals. A one-piece gear 11, 12 is provided, and a helical idle gear 13 of the clutch shaft 5 is always meshed with the gear 11 to form a forward rotation gear train A,
The other gear 12 is always meshed with another helical idle gear 15 of the clutch shaft 5 via a helical idle gear 14 of the idle shaft 6 to form a reverse gear train B.

A bulging portion is provided on the opposing sides of each free-rotating gear 13.15, and a clutch engagement portion 16.17 is formed on the inner diameter of each gear. A transmission switching body 20 having portions 18 and 19 on the outer periphery of both sides is slidably movable within a predetermined range in the axial direction by means of a screw fitting 21, and is fitted and mounted on the clutch shaft 5 between the idler gears 13 and 15. A shifter 23 of an actuating device, which will be described later, is engaged with the fitting groove 22 of the transmission switching body 20.

As shown in FIGS. 2 and 4, the actuating device includes a sliding body 25 in which a shifter 23 is rotatably mounted around a pivot 24 that is orthogonal to the axis of each rotating shaft 4, 5.6. are supported on pivot shafts 26, 26 supported in the case body 1 in the same direction as the axes of the respective rotating shafts so as to be slidable in the axial direction.
7, the transmission switching body 20 is connected to either clutch retaining portion 1.
6.17, and the pivot members 30 a and 30 b are connected to the pivot shaft 24 of the shifter from the side surface 29 of the sliding body 25 on the side closer to the installation opening 28 . The center portions of the rocking bodies 31 and 32 are attached to each of the rocking bodies 31 and 32, respectively, so as to project in the same direction as the rocking bodies 31 and 32.
32 can swing around the axes of the rotation support members 30a and 30b.

Fitting seats 35 and 36 are bored in the opposing inner side surfaces of one end portion 33 and 34 of each rocking body, and an extension spring 38 is supported between hemispherical seats 37 and 36 that fit into the respective hemispherical seats 37 and 36, respectively. A resilient material 39 is installed so that the one end portions 33 and 34 are expanded apart by the action of the resilient material 39,
Opposite end 4 sandwiching the rotation support members 30 a and 30 b
0 and 41 are biased toward each other, and the opposite ends 40 and 41 are extended from the sliding body 25.
．． 42 and is attached to the assembly opening 28 of the case body 1, the support lid 43 rotatably supports an operation rotation shaft 44 having a rotation center P, and the inner end flange 45 of the shaft. for,
The above-mentioned rotation fulcrum member 30 a is eccentric from the rotation center P.
, 30b, the inner surface 3 of each rocking body 31.
1a and 32a are protruded in the same direction as the rotation center P, and a remote control device 48 is connected to the external extension of the rotation operation shaft 44. be.

Next, the operation of the above-mentioned device will be explained. The power of the drive shaft 8 is transmitted from the damper 7 to the input shaft 4, and from the gears 11.
15 to rotate each gear, and if the transmission switching body 20 is maintained at the neutral position, each free rotating gear 13.15
The clutch shaft 5 only idles and no power is applied to the clutch shaft 5.

(Fig. 1, Fig. 4) In this state, the remote control device 48
When is rotated in the direction of the arrow in FIGS. 5 to 7, the operating rotation shaft 44 connected thereto also rotates, and the operating engagement members 46, 47 extending from the shaft also move.

Therefore, the oscillating body 32, which is in contact with the engaging body 47 at a position that is a predetermined distance closer to the elastic member 39 than the axis of the rotation fulcrum 30b, receives the rotational force and moves in the same direction. However, until the contact side crosses the axis O of the rotation fulcrum member 30b from the side with the above dimensions, it will move to the right in the figure while maintaining the same posture. Then, the sliding body 25 on which the rocking body 32 is installed is also moved in the same direction, and the shifter 23 installed on the body 25 slides the transmission switching body 20 to shift the clutch joint 19 to the idle gear. In this state, the power transmitted to the idling gear 15 is transmitted to the transmission switching body 20 via the coupling part 17.19, and the coupling part is screwed into The combined thrust acts to maintain the press-contact state, and power is transmitted to the clutch shaft 5, which transmits power through the gear train B via the joint 9 to the driven shaft 10.

As the actuating engagement members 46 and 47 continue to rotate further, the contact portion with the rocking member 32 crosses the axis O of the rotation support member 30b and comes into contact with it (Figs. 6 and 7). Accordingly, the oscillating body 32 is centered around the fulcrum member 30 b and its elastic member 39
The installation side causes a swing that moves to the left in the figure, and stopper 4
2, the entire body including the sliding body 25 must be moved to the right without compressing the elastic member 39 between it and one end of the other rocking body 31 whose position is regulated and maintained as it is by contact with the sliding body 25. The shifter 23 and the transmission switching body 20 are moved to the right while maintaining the force of
Even if the driven shaft 10 becomes unloaded from time to time and the thrust for threaded engagement is about to be lost, the spring force of the elastic member 39 will always keep the joints 17 and 19 in pressure contact. This means that thrust can be transmitted normally without loss of thrust at all times.

When trying to explain the transmission state by such a latch connection, by rotating the operating rotation shaft 44 in the direction of the arrow opposite to the above, the operating engagement members 46 and 47 will move to the predetermined position as the rotation occurs. After returning beyond the axis O, the swinging body 31.32 comes into contact with the stopper 42.42 and returns to the position where the normal posture is maintained, and after that, the actuating engagement body 46 keeps the swinging body 31 in the same posture. The force of moving it to the left moves both the sliding bodies 25 toward the neutral position.

Furthermore, when transmission is performed by the gear train A, by rotating the operation rotation shaft 44 in the direction opposite to the arrow, the operating engagement body 46 and the oscillating body 31 are operated by the above-mentioned operating engagement body 47 and the oscillating body 32. It works in the same way as in the case of 16 and 18, and can engage and disengage the clutches 16 and 18.

As explained above, in the present invention, in a forward/reverse transmission mission, the shifter 23 that engages with the transmission switching body 20
A sliding body 25 provided with a sliding body 25 is slidably supported in the case body 1 in the same direction as the switching body, and is opposed to a pair of rotation supporting members 30 a and 30 b pivotally supported on this sliding body. The rocking bodies 31, 32 are pivotally supported, and each rocking body 31.
32 is biased in the expansion direction by a resilient member 39 so that the ends on the opposite side of the rotation supporting member come into contact with stoppers 42 and 42, respectively, and an operating shaft 44 supported on the case body. In order to abut the operating engaging body 46.47 extending from the oscillating body 31.32 at a position eccentric to the elastic material side by a predetermined dimension from the axis O of the rotation support member on the corresponding inner surface of the oscillating body 31.32. The shifter 23 is rotated by the rotation of the rotation shaft 44.
Since the transmission switching body actuating device is constructed in such a way as to actuate the gear train, the desired clutch engagement of the gear train can be achieved in a compressed state simply by actuating and closing the rotary operating shaft 44 using the remote control device. Since the force can be maintained in the coupling direction, even if the coupling stroke between the transmission switching body and gear train changes due to manufacturing tolerances or wear during long-term use, this change is automatically absorbed. As a result, the clutch can be engaged reliably at all times.

[Brief explanation of drawings]

The drawings illustrate a specific example of the present invention; Fig. 1 is a cross-sectional front view of a forward/reverse transmission transmission implementing the present invention;
The figure is a side sectional view showing the actuating device of the present invention, Fig. 3 is a section taken along the line X-X of Fig. 2, Fig. 4 is a front view of the actuating device of the present invention, and Figs. 5 to 7 are the device of the present invention. FIG. 1...Case body, 4...Input shaft, 5.
...Clutch shaft, 6...Idle shaft, 1
1.12...Integrated gear, 13.15...
・Idle gear, 16.17...Clutch engagement part,
18.19...Clutch joint, 20...
...Transmission switching body, 23...Shifter, 25...
...Sliding body, 26 ... Pivot shaft, 30 a
, 30 b...Rotation fulcrum material, 31.32...
... Rocking body, 39 ... Pressure material, 42 ...
...Stopper, 43...Support lid, 44...
...Operating rotation axis, 46.47...Operating engagement body, 48...Remote control device, A, B...
Gear train, P...Rotation center of operation rotation axis, O...
...Axis center of rotation fulcrum material, L ...Rotation center P
and the distance between axis O.

Claims (1)

[Scope of utility model registration request] A transmission switching body 20 is slidably supported between a forward rotation gear train A and a reverse rotation gear train B that are arranged in parallel at a predetermined interval in the case body 1, and the gear train A, B
In the transmission transmission configured to selectively convert the transmission state into forward, reverse, or neutral states, the case body is configured such that a sliding body 25 provided with a shifter 23 that engages with the transmission switching body is slidable in the same direction as the switching body. The swinging bodies 31 and 32 facing each other are pivotally supported on a pair of rotation fulcrum members 30 a and 30 b that are supported on the sliding bodies, and each swinging body 31
, 32 are biased in the expansion direction by a resilient member 39 so that the ends on the opposite side of the rotation supporting member come into contact with the stoppers 42 and 42, respectively, and the operation circuit supported on the case body. Operating engagement body 46.4 extending from the dynamic shaft 44
7 is placed in contact with the corresponding inner surface of the drawing moving body at a position eccentric to the elastic material side by a predetermined dimension from the axis O of the rotation fulcrum member, and the operation rotation shaft 44 is rotated. The rocking body 31
, 32 to actuate the shifter 23.