JPH03260439A - Transmission with rotary disc - Google Patents

Abstract

PURPOSE:To provide external selectivity from a number of shift positions simply by forming a selecting means from a disc capable of rotating relative to the body, wherein the board surface intersects either of the prime shaft and follower shaft. CONSTITUTION:A transmit shaft 30 equipped with a gear 30-a mating with a gear 1-a required by another shaft and the requisite speed ratio is located at a part having a small distance from the part, where a groove 7 intersects, by rotating a disc 4 as a selecting means. This enables the requisite transmit shaft 30 to approach either the prime shaft 1 or follower shaft 2 selectively and to lie interposed between the two shafts 1, 2. To obtain another gear ratio, the selecting means 4 is again rotated, and thereby the transmit shaft positioned in the part with small distance from the groove 7 intersecting part is protruded to the part with large distance from the groove intersecting part, and another transmit shaft 31, 32, or 33 as required comes in the part with small distance from the groove 7 intersecting part to generate intervention between the prime shaft 1 and follower shaft 2.

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a rotational speed transmission.

<Prior Art> Gear transmissions have conventionally been used as means for converting rotational ratios in devices that use rotational power, such as household electrical appliances, industrial machinery, and transportation machines such as vehicles. This is a device that changes the number of revolutions of the driven shaft into several types for a fixed number of revolutions of the driving shaft by switching the meshing of the gears between the driving shaft and the driven shaft. This tooth@conversion device includes a gear ratio that can be selected as appropriate.
Some have been seen in which several pairs of gears that mesh through an intermediate gear are fixed to a shaft, and the intermediate gear is moved to selectively mesh with one of the gear pairs to perform transfer.

As shown in Figure 7, there is a driving shaft (1) that rotates by obtaining rotational force from another, a driven shaft (2) that rotates by obtaining rotational force from the driving shaft, and a driving shaft (1) and a driven shaft. The transmission shaft (3) is interposed between the drive shaft (2) and the drive shaft (2) to transmit rotational force from the driving shaft (1) to the driven shaft (2). To explain in detail, the driving shaft (1) has an appropriate number of gears (1-a
) (ib), and similarly the driven shaft (2) is equipped with an appropriate number of gears (2-a) (2-b) with different numbers of teeth, and both shafts (
1) and (2) are arranged in parallel with appropriate intervals, and both wheels (
One transmission shaft (3) is arranged in parallel between 1) and (2). This transmission shaft (3) is held slidably in the longitudinal direction of the shaft. Also, the transmission shaft (3) is the driving shaft (1)
and the unpaired gears (1-a) and (2a) of the driven shaft (2), and an intermediate gear (3a) that transmits rotational force, and the slow-moving shaft (+) and the driven shaft (2). A pair of 4-gears (1b) (2b
) is interposed between the intermediate gear (3-
b). These intermediate gears (3-a) and (3-b)
means that the other gear (3-b) is idling while the other gear (3-a) is meshing with the gear on the other shaft. . When changing gears from the state shown in FIG. 7, the transmission shaft (3) is slid in its longitudinal direction, and the gear (3-a) is separated from the gear on the other shaft.
The idling gear (3-b) meshes with the m wheel on the other axis (
Figure 8). In this way different speeds are obtained.

The two-speed transmission structure has the advantage that the device itself is simple and can be miniaturized, and is widely used by general manufacturers.

In FIGS. 7 and 8 described above, and in FIGS. 1 to 6 described in the Examples section, the teeth of each gear are omitted to avoid complication of the drawings. It is indicated by J.

<Problems to be Solved by the Invention> - Those using a transmission device as described in L have limitations on the sliding body of the transmission shaft (3) due to the presence of peripheral components such as holding means, and limitations on the sliding body of the transmission shaft (3). Due to the intervening position and sliding direction of the transmission shaft (3), there is a limit to the size and number of gears that can be provided on the transmission shaft (3).

For these reasons, it has been impossible to obtain a large number of speeds by shifting with conventional transmissions using intermediate gears. The present invention aims to solve the above problems.

<Means for Solving the Problems> Therefore, the present invention comprises: (1) a main body, a driving shaft, a driven shaft, an appropriate number of transmission shafts, means for holding the transmission shafts, and means for selecting the transmission shafts. The driving shaft has an appropriate number of gears with different numbers of teeth and is fixed to the main body, and the driven shaft is located below or above the driving shaft and has an appropriate number of gears with different numbers of teeth like the driving shaft. Each transmission shaft is provided with a gear and is fixed to the main body, and each transmission shaft is provided with a first gear that corresponds to one of the gears on the driving shaft, and a second gear that corresponds to one of the gears on the driven shaft. The selection means is held in the main body by a holding means that is arranged at an appropriate interval with respect to the driven shaft and is slidable in the direction in which the driving shaft and the driven shaft are positioned. The selection means is a disc that intersects with any one of the shafts and is rotatable relative to the main body, and the selection means has a groove penetrating from the surface to the M plane on the disc surface, and the driving shaft is driven. The Jr groove intersects with the above-mentioned transmission shafts, and is arranged so as to have a large part and a small part on the board surface, with the above-mentioned intersecting part as the center, and a part with a large distance from the above-mentioned intersecting part and a small part. A rotating speed transmission characterized by loosely fitting a main body, a driving shaft, a driven shaft, an appropriate number of transmission shafts, means for holding the transmission shafts, and means for selecting the transmission shafts. The driving shaft is provided with an appropriate number of gears with different numbers of teeth and is fixed on the main body, and the driven shaft is located below or above the driving shaft and has an appropriate number of gears with different numbers of teeth like the driving shaft. Each transmission shaft has a first gear corresponding to one of the gears on the driving shaft, and a second gear corresponding to one of the gears on the driven shaft. ) IIb + shaft is arranged at an appropriate interval and is held in the main body by the above-mentioned holding means so as to be able to slide in the direction in which the driving shaft and the driven shaft are located, and each transmission shaft is further prevented from sliding by means of regulating means such as springs. On the other hand, the selection means is a plate-shaped body rotatably fixed relative to the main body, and is in contact with each transmission shaft, and one of the contact portions is
The portion is formed so that the distance from the driving shaft and the driven shaft is smaller than other portions, and by rotating the selection means, the transmission shaft equipped with the required gear can be selected from the driving shaft and the driven shaft. It is an object of the present invention to provide a rotational speed transmission which is characterized in that it is possible to arrange the rotational speed transmission to a position where the distance is small, against the restriction of the restriction means.

In the present invention having the above means, ■ By rotating the selection means, the transmission shaft having the required speed ratio and the gear corresponding to the required gear of the other shaft is selected in the groove. By arranging the transmission shaft at a portion having a small distance from the above-mentioned intersection, it is possible to selectively bring this necessary transmission shaft closer to the driving shaft and the driven shaft and to interpose it between both the driving shaft and the driven shaft. When trying to obtain another gear ratio, by rotating the selection means again, the transmission shaft that was located at the part where the distance to the intersection of the grooves is small is moved to the part where the distance from the intersection of the grooves is large. It is pushed out and enters the other necessary transmission shaft or the part where the distance from the intersection of the grooves is small, and intervenes between the driving shaft and the driven shaft.

■By rotating the selection means, the transmission shaft equipped with the necessary gears can be positioned at a location where the distance from the driving shaft and driven shaft is small, against the restriction of the restriction means, thereby selecting an arbitrary transmission shaft. It is possible to selectively intervene the driving shaft and the driven shaft.

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

(1) is a driving shaft, which rotates by obtaining rotational force from another electric motor (not shown). This driving force M(+)
Is it % of the number of teeth? An appropriate number of teeth m (1-a) (Ib) (
IC) has been determined. (2) is the driven shaft,
It rotates by obtaining rotational force from the driving shaft (1).

This driven shaft (2) has an appropriate number of gears (2a
) (2-b) (2-c) are fixed. The driving shaft (1) and the driven shaft (2) are each shown as having three gears, but the number is not limited to this, and each gear may be three or more or three or less. It is possible to implement. The driving shaft (1) and the driven shaft (2) are located above the other. In Figure 1, the driving shaft (1) is the driven shaft (2).
Is the driven shaft (2) located above the driving shaft (1)?
It is possible to carry out even if it is located above.

Furthermore, although Fig. 1 shows the axis of the driven shaft (2) located on the extension of the axis of the driving shaft (1), the respective axes do not have to be concentric, and the positions of both wheels may be displaced. It is possible to implement even if the

Both the driving shaft (1) and the driven shaft (2) are fixed to the main body of the apparatus, but the main body is omitted in each figure to avoid complication of the drawings.

On the main body, a circle @ (4) is placed in the history. Details Z4
Then, this disk (4N,
1. The driven shaft (2) and its board surface intersect perpendicularly for about 1j.
, This is held in the main body with the difference part (5) at the center in the same rotational OJ function. Rotation of circle III (4) is accomplished by sliding a notebook knob (6) provided at an appropriate position on the outer periphery of circle 11 (4) from the outside.

Further, at this intersection (5), the driven shaft (2) fits into the disk (4), and the movement (2) does not come into contact with the disk (4). If it is rotatable, there is no problem with contact, or contact is undesirable due to the loss of rotational force transmission).

Although this disc (4) is shown in FIG. 1 as having a disc surface that intersects with the driven shaft (2), it may also be located above the driving shaft (I).

The disk (4) described above has a groove (7) that penetrates from the front side to the back side and presents an arc on the disk surface. The center of the arc presented by this groove (7) is -11 not coincident with the above-mentioned intersection (5), and the groove (7) is 'JB
, 4- each portion of the circular arc has a gradually different distance from the intersection (5).

The drive shaft (1) and the drive shaft C
2) To'P? r ni (M r?, i-7, r As for the transmission shafts, only (30) and (31') are shown, and the others C are omitted).

Below 1 - Explanation of the Buddha shaft (30) as a representative of other transmission shafts 4
It's true. The transmission shaft (30) is the gear (la) of the driving shaft (1).
(1-b) The gear (3) corresponding to the appropriate one in (1-c)
0-a) is fixed. In history, the transmission shaft (30) is connected to the float (2-a) (2-a) of the other part'\driven III (2).
b) Gear (30-b) corresponding to the appropriate gear in (2-c)
) are fixed stones. The transmission shaft (30) is fixed to the arm (8) at a suitable position.

The arm (8) is rotatable (1!!) in the direction of movement (X) relative to the main body and is fixed, for example, by a shaft (9).

However, if it has a degree of freedom that can accommodate the sliding movement of the transmission shaft (3) that moves backward, it is not limited to the above-mentioned rotational movement, for example, in the rt-line direction in the direction (v) in Fig. 1. It is acceptable even if it is slidably fixed to the main body.

In this way, the arm (8) holds the t, L and il shafts (30) on the main body from the position to the 1-luck angle (
7)・＼Play with it and enjoy it.

The L linked shaft (30) is connected to the driving shaft (1) and the driven shaft (2).
The r/t meshes with the CF2 of the fki-(30a) or the tII wheel (Ia bar 1-b) (Ic), and the teeth at the same time! (30-b) is #ilI car (2-a) (2bHLc
). In this way, rotational force is transmitted from the driving shaft (1) to the driven shaft (2).

Below, we will explain the configuration in which a transmission shaft with an interesting H4 port is selected. As shown in Fig. 2, multiple transmission shafts (30) (31) with floats having different gear ratios
(32) and (33) are engaged with the arcuate groove (7).

Slide the knob (6) and attach the required transmission shaft (30).
Insert it at the smallest distance from the intersection (5) of the groove (7) (same position as (1) in Figure 2). At this time, the transmission shaft (30) is moved toward the driving shaft (1) and the driven shaft (2), and each gear (the driving shaft (1) and It meshes with the corresponding gear of the driven shaft (2).

This +! =n, others 0) (m datsuM (31) (32)
(:13) C, N (7) + 7) Pushed to another part (a large part away from the intersection), movement) Not related to the transmission of J.

To change the gear ratio, slide the knob (6)
It is sufficient to insert the other required transmission shaft into the part having the smallest distance from the intersection (5) of N(7).

At this time, the transmission shaft (30) is connected to the intersection portion (5) of the groove (7).
) is pushed away and released from power transmission.

The arm (8) is not limited to the shaft (9), but it is also effective to use one that connects a plurality of joints in order to smoothly move the linked shaft.

In Figure 2, the transmission shafts are (30) (31) (32) (3
3) c+, + Although four are shown, it is possible to implement it even if it is more than four or less than four, and by increasing the number of transmission shafts, the number of selectable gear ratios can be increased. I can do 4 more things.

It would be convenient if the disc (4) is configured such that the knob (6) can be stopped or removed at a certain position so that each transmission shaft can be selected with ease. As an example of such a configuration, the disk (4) is provided with four portions of the ia image position or the ρ1 portion, a convex portion or a concave portion corresponding to the concave portion or convex portion is provided on the main body side, and the disk (4) is provided with a corresponding convex portion or convex portion. ) The recesses or protrusions on both sides of the main body fit together, and when the disk (4) rotates, the transmission shaft becomes the driving shaft (1).
It is also appropriate to allow the shaft to remain at the position corresponding to the driven shaft (2).

Figure 3 shows the means for fixing the vertical position of each transmission shaft.

This is to fix the upper position of the transmission shaft by fixing the brim (10) to a position corresponding to the surface of the disk (4) of each transmission shaft. At this time, it is effective if the * (7) is provided with mountain-like ridges (11) on both edges so that the rotation of the transmission shaft is not resisted by contact with the disk (4). be. The top of this raised part (11) and the brim-shaped body (1
0), the transmission shaft (3) becomes a disc (
4) It is possible to reduce the resistance received from 4).

In the above embodiment, the groove (7) was disclosed as a circular arc centered at a position eccentric from the intersection part (5), but as shown in FIG. 4, for example, by forming the groove (7) as an eccentric circular arc, , instead of ensuring a difference in distance from the intersection, only a part of the arc formed by the groove (7) is formed to recede toward the intersection 8, so that the distance from the part (7a) with a large distance from the intersection is It is also effective to secure a small portion (7-b) of the area. The portion (7-a) that is far away from the text difference portion above does not have to form part of a circular arc, and there is no problem even if it is another curved line or a part of it is straight.

In the embodiment shown in Fig. 4, the structure other than the groove (7) is the same as the embodiment shown in Figs. 1 to 3 above, and the structure around the transmission shaft is is omitted.

Next, an embodiment of the invention according to claim 2 will be described using FIG. This is a view of the plate-shaped body (4°) from the same direction as shown in FIGS. 2 and 4 above. Here, the plate-shaped body (4°) plays the same role as the above-mentioned disk (4) as a means of selecting the transmission axis, but as described later, the outer periphery is not perfectly circular. , hereinafter referred to as a plate-like body. The plate-shaped body (4゛) serves as a transmission shaft selection means and has a different configuration from that shown in Figures 1 to 4, but the driving shaft, driven shaft, each transmission shaft and its arm are , adopts the same configuration as those shown in FIGS. 1 to 4.

The plate-shaped body (4") is rotatably fixed to the main body as a disk, and the - part of its outer periphery is retracted (retracted part (40)) toward the center. Each transmission shaft ( 30)... are arranged at appropriate intervals on the outer periphery of the plate-shaped body (4゛) (to avoid complicating the drawing, the transmission shafts are
Although only 31) is abbreviated, the number is not limited to these two, as in the described embodiment. Similarly, gears and the like are omitted to avoid complicating the drawing. Such representative illustrations and omissions also apply to those shown in FIG. 6).

At this time, each transmission shaft is moved toward the center of the plate (4゛) (indicated by arrow (M)) by a biasing means (not shown) such as a pushing strip.
), the sliding movement of the biased receiver is restricted. Operate the knob (6) to rotate the plate (4°), drop the transmission shaft (30) with the required gear into the retracted part (40), and connect the driving shaft (1) and driven shaft. Go to (2).

Shifting is performed in this manner. Another embodiment of this FIG. 5 is shown in FIG. 6. This is done by forming a plate-shaped body (4') into an annular shape, and providing a raised portion (42) on a part of the inner periphery of the annular body. Each transmission shaft (30)... is located on the circumferential surface of the four-part annular body, and is pressed against the inner circumferential surface by a regulating means such as a trigger strip (arrow (N)), a plate-shaped body ( 4′
) to attach the required transmission shaft (30) to the raised part (4).
2) Arrange it at the top. In this way, the necessary transmission shaft (30) can be interposed between the driving shaft and the driven shaft. The top of the ridge (42) may advantageously be recessed to hold the selected transmission shaft.

<Effects of the Invention> By carrying out both of the claimed inventions, it has become possible to easily select a large number of speed ratios from the outside by rotating a disc serving as a selection means.

Furthermore, although it is possible to select from a large number of speed ratios, the size of the device can be maintained.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a main part showing an embodiment of the invention according to claim 1, and FIG. 2 is a plan view of the main part. Further, FIG. 3 is a partially cutaway front view thereof. FIG. 4 is a schematic plan view of main parts showing another embodiment of the invention according to claim 1. FIG. 5 is a schematic plan view of a main part showing one embodiment of the invention according to claim 2, and FIG. 6 i is a main part showing another embodiment of the invention according to claim 2. FIG. 7th
This figure is a front view of the main parts of a conventional transmission using an intermediate gear, and FIG. 8 is a front view of the main parts showing the transmission state. (1)...-driving axis, (2)...driven axis, (4)...
・Disc, (4°)...plate-like body, (7)-...groove, (3
0) (31) (32) (33)...Transmission shaft, No.! Figure 3 Figure Figure Figure Figure Wa Figure Figure

Claims (1)

[Claims] 1. A main body, a driving shaft, a driven shaft, and an appropriate number of transmission shafts,
The drive shaft is provided with an appropriate number of gears having different numbers of teeth and is fixed to the main body, and the driven shaft is located below or below the drive shaft. is located above and is equipped with an appropriate number of gears having different numbers of teeth like the driving shaft, and is fixed to the main body, and each transmission shaft is connected to one of the gears of the driving shaft and the corresponding first gear and one of the driven shafts. The gear is provided with a second gear corresponding to the gear, and is arranged at an appropriate interval with respect to the driving shaft and the driven shaft, and is held in the main body by the holding means so as to be slidable in the direction in which the driving shaft and the driven shaft are positioned. , the selection means is a disk whose surface intersects with either the driving shaft or the driven shaft and is rotatable relative to the main body; The driving shaft intersects with the driven shaft, and the groove is arranged so that, with the intersection as a center, there are parts on the board surface having a large distance from the intersection and parts with a small distance from the intersection. . The rotational speed transmission further characterized in that each of the transmission shafts is loosely fitted into the groove. 2. A main body, a driving shaft, a driven shaft, and an appropriate number of transmission shafts,
The drive shaft is provided with an appropriate number of gears having different numbers of teeth and is fixed to the main body, and the driven shaft is located below or below the drive shaft. is located above and is equipped with an appropriate number of gears having different numbers of teeth like the driving shaft, and is fixed to the main body, and each transmission shaft is connected to one of the gears of the driving shaft and the corresponding first gear and one of the driven shafts. a second gear corresponding to said gear, arranged at an appropriate interval with respect to both shafts, and held in the main body by the holding means so as to be slidable in the direction in which the driving shaft and the driven shaft are located;
Further, the sliding movement of each transmission shaft is regulated by a regulating means such as a spring, and on the other hand, the selection means is a plate-shaped body that is rotatably fixed relative to the main body, and each It is in contact with the transmission shaft, and one part of this contact part is formed so that the distance from the driving shaft and the driven shaft is smaller than other parts, and by rotating the selection means, A rotational speed transmission characterized in that a transmission shaft equipped with gears can be positioned at a position where the distance between the driving shaft and the driven shaft is small, against the restriction of a restriction means.