JPH04131528A - Rolling clutch - Google Patents

Abstract

PURPOSE:To achieve transmission disengagement condition without delay by employing an operation means for achieving the transmission disengagement condition by sliding a first and a second outer rings, and an allowing portion for allowing relative rotation within a preset angle in a fitting portion between the first and second outer rings and a casing. CONSTITUTION:Projections 7Aa, 7Ba are formed on the external surfaces of a first and a second outer rings 7A, 7B. Projections 4a are formed on the internal surface of a casing 4. Therefore the first and second outer rings 7A, 7B are capable of sliding relative to the casing 4. The first and second outer rings 7A, 7B are capable of rotating relative to the casing 4 within a preset angle alpha. The condition of transmission disengagement is achieved because the first and second outer rings 7A, 7B are rotated slightly with the energizing force of coned disk springs 9, 10 to go ahead of the casing 4 and slide smooth quickly.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rolling clutch using rollers.

[Conventional technology]

For example, there is a rolling clutch using rollers having a structure as shown in FIGS. 6 and 7 (see Japanese Patent Application No. 1-236480).

In other words, a pair of first and second inner rings (6A), (6
B) is fixed to the transmission shaft (2), and the casing (B) is slidably attached to the transmission shaft (1) with a spline structure.
4), a pair of first and second outer rings (7A) whose inner peripheries are formed into conical surfaces (7AS) and (7BS).

(7B) is slidably attached to the first and second outer rings (7A) with a spline structure.

(7B) conical surface (7AS), (7BS) or first and second inner rings (6A), (6B) conical surface (6B)
AS) and (6BS).

Then, the first and second inner rings (6A), (6B
) and the first and second outer rings (7A), (7B) biconical surfaces (6AS), (6BS), (7AS),
(7BS), the shaft center (X
) are the first and second wheels that roll around the non-parallel axis (Y).
Rollers (8A) and (8B) are arranged.

As a result, when the transmission shaft (1) is rotationally driven in the direction shown by the arrow (F), the first and second outer rings (7A),
(7B), the first and second rollers (8A), (
8B) will roll slightly in the direction of arrow (G) in FIG. Therefore, the first roller (8A)
The outer ring (7A) and the first inner ring (6A) are located on the right side of the paper, that is, the first outer ring (7A) and the first inner ring (6A).
Conical surface (7AS) of inner ring (6A), (6AS
), the first roller (8A) is sandwiched between the first inner ring (6A) and the first outer ring (7A), and the first inner ring (6
A) and the first outer ring (7A) are integrated, and the power of the transmission shaft (1) is transmitted to the transmission shaft (2) via the first outer ring (7A) and the first inner ring (6A).

On the other hand, when the second roller (8B) rolls in the direction of the arrow (G) on the second inner ring (6B) side, the second roller (8B) rolls in the direction of the arrow (G).
Conical surface (7BS) of roller (8B) or second outer ring (7B) and second inner ring (6B), (6BS)
will be moved to the side with wider spacing. This allows the second
The pinching phenomenon of the rollers (8B) does not occur, and no power is transmitted via the second outer ring (7B) and the second inner ring (6B).

Contrary to the above situation, when the transmission shaft (1) is rotated in the direction opposite to the arrow (F), the first and second rollers (8A), (8B) or the arrow (G) in FIG. rolls slightly in the opposite direction. As a result, a pinching phenomenon occurs on the second roller (8B) side, and the power is transmitted to the transmission shaft (2) via the second outer ring (7B) and the second inner ring (6B).

Then, no pinching phenomenon occurs on the first roller (8A) side, and no power is transmitted.

As described above, by providing a pair of one-way clutches with opposite transmission characteristics, it is possible to transmit forward and reverse power.

In order to bring about the transmission cut state in contrast to the transmission state described above, as shown in FIG. Push it to the right side of the page. This allows the first
The outer ring (7A) is trying to move away from the first inner ring (6A) to the right in the drawing, or the spring (1
7), so the second outer ring (7B)
or the second roller (8B).

The reaction force from the second roller (8B) causes the first outer ring (7A), hydraulic piston (16), and casing (4) to slide to the left in the drawing. Then, the first outer ring (
7A), the above phenomenon is repeated and the spring (17) contracts, and the part between the first and second outer rings (7A) and (7B), which has become smaller in distance, becomes the first and second outer rings (7B). It will be located in the center between the two inner rings (6A) and (6B).

Thereby, the first and second inner rings (6A).

(6B) and the first and second outer rings (7A), (7
B) conical surface (6AS), (6BS), (7AS)
(7BS) The distance between the two rollers widens, and the first and second rollers (8A) and (8B) are no longer sandwiched between them, resulting in a transmission cut state.

[Invention or problem to be solved]

In the conventional structure shown in Fig. 6, the first outer ring (7
A) to the right in the paper, the casing (4) and the first outer ring (7A) are fitted with a spline structure, so the first outer ring (7A) is pressed against the casing (4).
) is slid straight to the right in the paper along the axis (X) without relative rotation.

On the other hand, the first roller (8A) that is in contact with the first outer ring (7A) has an axis (X
) is placed diagonally. Therefore, if the first outer ring (7A) is slid straight along the axis (X) without rotating as described above, the first roller (8A) will be forced by the first outer ring (7A). rolling (
In the direction of the arrow (G) in FIG. 7), there will be resistance to the sliding operation of the first outer ring (7A). This phenomenon also occurs when the second outer ring (7B) in FIG. 6 is slid to the left in the paper, resulting in a delay in the transmission cutting operation.

It is an object of the present invention to provide a rolling clutch such as the one described above so that the transmission is disconnected without delay.

[Means to solve the problem]

The feature of the present invention is that the rolling clutch described above is constructed as follows.

In other words, (1) an operating means that slides the first and second outer rings so that the conical surfaces of the first and second inner rings and the first and second outer rings are separated from each other to create a transmission cut state; and a flexible portion that allows relative rotation within a set angle is provided at the fitting portion between the first and second outer rings and the casing.

■ Equipped with an operating means that slides the first and second inner rings so that the conical surfaces of the first and second inner rings and the first and second outer rings are separated from each other to create a transmission cut state. Additionally, a flexible portion is provided at the fitting portion between the first and second inner rings and the power transmission shaft to allow relative rotation within a set angle.

[For production]

(i) If configured as in the previous section (■), for example, Figures 1 and 3
As shown in the figure, when the transmission shaft (1) is rotationally driven in the direction of the arrow (H), a pinching phenomenon occurs on the first roller (8A) side and the first outer ring (7A) and the first inner ring (6A). ) side is transmitting power.

In this state, it is assumed that the first and second outer rings (7A) and (7B) are slid by the operating means in order to bring about the transmission cut state (in the structure shown in Fig. 1, the first outer ring (7A) on the right side of the paper, the second outer ring (7
Slide B) to the left of the page). In this case, since a flexible part (see Fig. 2) is provided between the casing (4) and the first outer ring, the first outer ring (7A) is attached to the casing along the outer surface of the first roller (8A). (4)
While rotating slightly (clockwise in Fig. 2) so as to be ahead of the transmission, it quickly and smoothly slides into the transmission-off state.

Furthermore, when the transmission shaft (1) is rotationally driven in the direction of the arrow (H), since no power is transmitted on the second outer ring (7B) and second inner ring (6B) sides, the operating means As a result, the second outer ring (7B) can be slid without any trouble, and the transmission cut state can be obtained.

In the structure shown in FIG. 1, when the transmission shaft (1) is rotated in the direction opposite to the arrow (H), the second roller (8
A pinching phenomenon occurs on the B) side and the second outer ring (7B
) and the second inner ring (6B) side. In this case, the first and second outer rings (7A) are controlled by the operating means.

(7B) slides, the second outer ring (7B)
On the B) side, the above-mentioned advance rotation phenomenon occurs.

(ii) As in the previous item (■), when sliding the first and second inner rings to reveal the transmission cut state
If a flexible structure is provided between the second inner ring and the power transmission shaft that supports it, a phenomenon similar to the above-mentioned (i) will occur in the flexible structure.

〔Effect of the invention〕

As described above, by providing a flexible part so that the first and second outer rings or the first and second inner rings that are slid can rotate slightly relative to each other, the first and second outer rings can be quickly and smoothly rotated.
．． It is now possible to slide the two outer rings or the first and second inner rings, creating a rolling clutch that allows for quick cutting operations.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in Fig. 1, the cylindrical first transmission shaft (1) on the upper side of the transmission is opposed to the second cylindrical transmission shaft (2) on the lower side of the transmission.
) are supported concentrically and relatively rotatably. A flange (3) is attached to the first transmission shaft (1) with a spline structure, and a cylindrical casing (4) is attached to the flange (3) with a spline structure. Also, a stopper (5) is attached to the flange (3) or the casing (4) to prevent it from sliding.

The second transmission shaft (2) has a conical surface (6AS) on the outer periphery.

A pair of first and second inner rings (6A) formed on (6BS), (6B) or its conical surface (6AS), (
6BS) are mounted in a spline structure so that they face each other.

On the other hand, on the casing (4) side, the inner periphery is a conical surface (
7AS), a pair of first and second formed in (7BS)
The outer ring (7A) and (7B) are internally installed.

In this case, as shown in FIG. 2, protrusions (7Aa) and (7Ba) are formed at intervals on the outer surfaces of the first and second outer rings (7A) and (7B), and the casing ( Projections (4a) are also formed at intervals on the inner surface of 4), and both projections (7Aa), (7Ba), (4a)
or occlusion.

This allows the first and second outer rings (7A) and (7B) to slide with respect to the casing (4), and the casing (4) and the first and second outer rings (7A).
) and (7B) are possible together. Also, the setting angle (θ
), the casing (4) and the first and second outer rings (7A) and (7B) can rotate relative to each other.

1st and 2nd inner rings (6A), (6B) and 1st
and the hundred conical surface (6AS), (6BS), (7AS), (7BS) of the second outer ring (7A), (7B)
), as shown in FIGS. 1 and 3, there are first and second Taber-type rollers (8A) and (8B) between the first and second transmission shafts (1).

(2) It is disposed so as to be freely rotatable around an axis (Y) inclined with respect to the axis (X) of (2).

As shown in Fig. 1, between the flange (3) and the first outer ring (7A), the first outer ring (7A) is placed on the right side of the paper (the first inner ring (6A) and the first outer ring A disk spring (9) (corresponding to the operating means) is provided which biases the centrifugal conical surface (6AS) of (7A) in the direction away from (7AS). Moreover, a second
Place the outer ring (7B) on the left side of the paper (second inner ring (
6B) and the hundred conical surface (6BS) of the second outer ring (7B)
), (7BS) or away from the disc spring (I
(equivalent to OX operating means) is provided.

A fixed ring member (12) is provided on the outer surface of the casing (4) so as to surround the casing (4). By supplying hydraulic oil to the oil passage (13) of the ring member (12), the first outer ring (7A) can be slid to the left in the drawing and the second outer ring (7B) can be slid to the right in the drawing. It becomes.

The state shown in Fig. 1 is when hydraulic oil is supplied to the oil passage (13),
The first and second outer rings (7A) and (7B) are
and is in a state of being pressed against the second rollers (8A) and (8B). Therefore, when the first transmission shaft (1) is rotationally driven in the direction of the arrow (H) in the state shown in FIG.
and the second outer ring (7A), (7B)
and second rollers (8A), (8B) or first and second inner rings (6A), (6B) as shown in FIG.
) is slightly rolled in the direction of arrow (J). In this case, the casing (4) and the first and second outer rings (
7A), both protrusions (4a) of (7B).

(7Aa) and (7Ba) are in the state shown in FIG.

As a result, the first roller (8A), the first outer ring (7A), and the first inner ring (6A) are placed on the left side of the paper, that is, the first outer ring (7A) and the first inner ring (6A).
The first roller (8A) moves to the side where the distance between the conical surfaces (7AS) and (6AS) of A) is narrower, and the first roller (8A) moves to the one hundred conical surface of the first inner ring (6A) and the first outer ring (7A). Sandwiched between (6AS) and (7AS), the first
The inner ring (6A) and the first outer ring (7A) are integrated, and the power of the first transmission shaft (1) is transferred to the second transmission shaft (6A) through the first outer ring (7A) and the first inner ring (6A). 2).

On the other hand, when the second inner ring (6B) and the second roller (8B) roll in the direction of the arrow (J), the second roller (8B) moves between the second outer ring (7B) and the second inner ring (7B). The conical surface (7BS) of the ring (6B) becomes the second part that moves to the wider side of the (6BS). As a result, the pinching phenomenon of the second roller (8B) does not occur, and no power is transmitted via the second outer ring (7B) and the second inner ring (6B).

Contrary to the above situation, when the first transmission shaft (1) is rotated in the direction opposite to the arrow (H), the first and second rollers (8A), (8B) or the arrow (J ) rolls slightly in the opposite direction. This allows the second roller (8B
) side, a pinching phenomenon occurs and the power passes through the second outer ring (7B) and the second inner ring (6B),
It is transmitted to the second transmission shaft (2). Then, no pinching phenomenon occurs on the first roller (8A) side, and no power is transmitted.

As described above, by providing a pair of one-way clutches with opposite transmission characteristics, it is possible to transmit forward and reverse power.

Next, a state in which power is not transmitted to the second transmission shaft (2) even if the first transmission shaft (1) is rotationally driven in the direction of the arrow (H) or in the opposite direction will be described.

As shown in Fig. 1, the first transmission shaft (1) is rotationally driven in the direction of the arrow (H), and power is transmitted to the first outer ring (7A) and first inner ring (6A). Suppose that the hydraulic oil is removed from the oil passage (13) of the ring member (12) in this state. In this case, disc springs (9), (1
0), the first outer ring (7A) is slid to the right in the drawing and the second outer ring (7B) is slid to the left in the drawing. Along the outer surface of (8A), rotate slightly (clockwise in Fig. 2) so as to be ahead of casing (4), and then quickly and smoothly slide it to the left in the paper to obtain the transmission cut state. .

Also, when the first transmission shaft (1) is rotationally driven in the direction of the arrow (H), power is not transmitted on the second outer ring (7B) and second inner ring (6B) sides. , the biasing force of the disc spring (10) causes the second outer ring (7B)
can be slid to the left in the paper without any problem, and the power transmission cut state can be obtained.

Next, the first transmission shaft (1) is rotationally driven in the direction opposite to the arrow (H), and power is transmitted to the second outer ring (7B) and second inner ring (6B) sides. In this state, assume that the hydraulic oil is removed from the oil passage (13) of the ring member (12). In this case, the first outer ring (7A) is slid to the right in the drawing and the second outer ring (7B) is slid to the left in the drawing due to the urging force of the disc springs (9) and (10). In the outer ring (7B), it rotates slightly along the outer surface of the second roller (8B) so as to precede the casing (4) (counterclockwise in Fig. 2, but both protrusions (4a) and (7Aa) , (7Ba
) and the state in which they are in contact with each other is the complete opposite of the state shown in Figure 2), while quickly and smoothly sliding it to the left of the page.
A transmission cut state can be obtained.

Also, when the first transmission shaft (1) is rotationally driven in the direction opposite to the arrow (H), power is not transmitted on the first outer ring (7A) and first inner ring (6A) sides. Since there is no disc spring (9), the first outer ring (7)
A) The slide operation to the right in the paper can be performed without any problem, and the transmission cut state can be obtained.

[Another example]

The above rolling clutch may be constructed as shown in FIG. 4. In other words, the first and second outer rings (7A), (
7B) to the transmission cut side with respect to the casing (4).

(equivalent to 100 operating means), and an oil passage (13) for hydraulic oil that slides the first and second outer rings (7A) and (7B) to the transmission input side is connected to the casing (
4).

In the casing (4) and the first and second outer rings (7A) and (7B), as shown in FIG.
), (7B) has recesses (4b), (7Ab), (7
Bb), and both recesses (4b), (7Ab)
, (7Bb) with a hole (18) interposed between them. In this case, the first and second outer rings (7A), (7B
) side concave portions (7Ab) and (7Bb) are enlarged to form a flexible portion.

In the embodiments shown in FIGS. 1 and 4 above, the structure is such that the first and second outer rings (7A), (7B) can be slid, or the first and second outer rings (7A), (7B) are slidably operated.
B) is fixed, the first and second inner rings (6A),
(6B) may be slid to reveal the transmission cut state. In this case, a flexible portion as shown in FIG. 2 or 5 is formed between the first and second inner rings (6A), (6B) and the second power transmission shaft (2).

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

The drawings show an embodiment of the rolling clutch according to the present invention,
Figure 1 is a vertical cross-sectional side view of the rolling clutch, Figure 2 is the 1st
In the figure, the casing and the first
A cross-sectional view of the vicinity of the outer ring, Figure 3 shows ■ in Figure 1.
- Figure 4 is a longitudinal cross-sectional side view of a rolling clutch in another embodiment, Figure 5 is a view seen from the - ■ direction, Figure 5 is the ■ -
A cross-sectional view of the casing and the vicinity of the first outer ring viewed from the direction (1), FIG. 6 is a vertical side view showing a conventional rolling clutch, and FIG. 7 is a view viewed from the direction (2)--2 in FIG. (2)...Transmission shaft, (4)...Casing, (6A)...First inner ring, (6A
S)...Conical surface of first inner ring, (6B)
・・・・・・Second inner ring, (6BS)・・・・・・
・Conical surface of second inner ring, (7A)...First outer ring, (7AS)...Conical surface of first outer ring, (7B)...First 2 outer ring, (7BS)...Conical surface of the second outer ring,
(8A)...First roller, (8B)...
...Second roller, (9), (10), (14),
(15)...Operating means, (X), (Y).
...Axis center, (θ) ...Setting angle.

Claims (1)

[Claims] 1. A pair of first and second inner rings (6A) and (6B) whose outer peripheries are formed into conical surfaces (6AS) and (6BS) are attached to the transmission shaft (2), and the inner peripheries are Conical surface (7AS), (7
A pair of first and second outer rings (7
A), (7B), their respective conical surfaces (7AS), (7BS
) are the first and second inner rings (6A) and (6B).
The first and second inner rings (6A) and (6B) are attached to the casing (4) so as to face the conical surfaces (6AS) and (6BS) of
Each conical surface (6AS) of outer ring (7A), (7B)
, (6BS), (7AS), and (7BS), first and second rollers (rolling around an axis (Y) oblique to the axis (X) of the transmission shaft (2) 8A) and (8B), and when either the casing (4) or the transmission shaft (2) is rotationally driven in a predetermined direction, the first roller (8A) is rotated to the transmission shaft (2) by rolling. The first inner ring (6A) and the first outer ring (
The first inner ring (6A) and the first outer ring (7A) are sandwiched between both conical surfaces (6AS) and (7AS) of the
7A) rotates integrally to transmit power, and when either the casing (4) or the transmission shaft (2) is rotationally driven in a direction opposite to the predetermined direction, the 2
The roller (8B) is displaced in the direction of the axis (X) of the transmission shaft (2) and is sandwiched between the conical surfaces (6BS) and (7BS) of the second inner ring (6B) and second outer ring (7B). The rolling clutch is configured such that a second inner ring (6B) and a second outer ring (7B) integrally rotate in opposite directions to transmit power;
and each conical surface (6AS) of the second inner ring (6A), (6B) and the first and second outer ring (7A), (7B).
), (6BS), (7AS), (7BS) so that the comrades are separated from each other, the first and second outer rings (7A), (
The first and second outer rings (7A), (7
The setting angle (θ) is set at the fitting part between B) and the casing (4).
A rolling clutch that has a flexible section that allows relative rotation within the clutch. 2. A pair of first and second inner rings (6A) and (6B) having outer circumferences formed with conical surfaces (6AS) and (6BS) are attached to the transmission shaft (2), and the inner circumferences are formed with conical surfaces (7AS), (7
A pair of first and second outer rings (7
A), (7B), their respective conical surfaces (7AS), (7BS
) are the first and second inner rings (6A) and (6B).
The first and second inner rings (6A) and (6B) are attached to the casing (4) so as to face the conical surfaces (6AS) and (6BS) of
Each conical surface (6AS) of outer ring (7A), (7B)
, (6BS), (7AS), and (7BS), first and second rollers (rolling around an axis (Y) oblique to the axis (X) of the transmission shaft (2) 8A) and (8B), and when either the casing (4) or the transmission shaft (2) is rotationally driven in a predetermined direction, the first roller (8A) is rotated to the transmission shaft (2) by rolling. The first inner ring (6A) and the first outer ring (
The first inner ring (6A) and the first outer ring (7A) are sandwiched between both conical surfaces (6AS) and (7AS) of the
7A) rotates integrally to transmit power, and when either the casing (4) or the transmission shaft (2) is rotationally driven in a direction opposite to the predetermined direction, the 2
The roller (8B) is displaced in the direction of the axis (X) of the transmission shaft (2) and is sandwiched between the conical surfaces (6BS) and (7BS) of the second inner ring (6B) and second outer ring (7B). The rolling clutch is configured such that a second inner ring (6B) and a second outer ring (7B) integrally rotate in opposite directions to transmit power;
and each conical surface (6AS) of the second inner ring (6A), (6B) and the first and second outer ring (7A), (7B).
), (6BS), (7AS), (7BS) so that the comrades are separated from each other, the first and second inner rings (6A), (
The first and second inner rings (6A), (6
A rolling clutch in which a flexible part is provided at the fitting part between B) and the transmission shaft (2) to allow relative rotation within a set angle.