JPH0276932A - Method of manufacturing moving-side plate in viscous fluid coupling device and moving-side plate obtained by this method - Google Patents

Abstract

PURPOSE:To positively receive the moving force from viscous fluid in the axial direction by forming the peripheral part in a surface on one side of a hole made in a moving-side plate into a fan-shape, or widened toward the end, by means of press working. CONSTITUTION:In one process of press working to a plurality of holes 2,..., which are made in a moving-side plate 1 in the circumferential direction at a certain interval, a peripheral part in a surface on one side is formed into a fan-shape 3. Accordingly, when a difference in the revolving speed between moving side plates 1... and fixed-side plates 7... of a viscous fluid coupling device takes place, the moving force from by viscous fluid in the axial direction is positively received by the fan-shaped part 3 at the peripheral part, and the moving-side plates 1... move so as to approach the fixed-side plates 7.... By this movement, the viscous fluid is pushed aside toward the side to which the fan-shaped part 3 faces. In addition, by the pressure rise due to a temperature rise, the moving-side plates 1... are further pushed toward the fixed-plates 7..., thereby increasing the hump torque.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a viscous fluid coupling that transmits torque by utilizing shear resistance of viscous fluid between perforated plates connected to input and output shafts. The present invention relates to a method for manufacturing a movable plate in an apparatus and a movable plate obtained by the manufacturing method, and particularly relates to hole punching and the movable plate itself manufactured.

[Prior art] A viscous fluid (silicone oil) is filled between a group of fixed plates with holes and a group of movable plates connected to the input and output shafts and arranged alternately, and the shear resistance of this viscous fluid is reduced. A viscous fluid coupling (viscous cup link) device for transmitting torque using viscous fluid is known (for example, see U.S. Pat. No. 4,022,084).

[Problems to be Solved by the Invention] By the way, in such a viscous fluid coupler device, the plates with holes are in frictional contact with each other.
One possible means to increase the hump torque is to have the movable plate actively receive the axial movement force caused by the viscous fluid.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a method for manufacturing a movable side plate configured to actively receive a moving force in the axial direction due to a viscous fluid in a viscous fluid coupling device, and a movable side plate obtained thereby. It's about doing.

[Means for Solving the Problems] In order to achieve the above-mentioned problems, the present invention includes a group of fixed side plates 7 connected to one of the input/output shafts and fixed in the axial direction; Individual fixed side plates 7 connected to the other and movable in the axial direction... A group of movable plateds arranged between them, and each plated plate on the fixed side and movable side.
・, 7... A method for manufacturing a movable side plate l in a viscous fluid coupling device comprising a viscous fluid interposed therebetween, comprising: a plurality of holes 2 provided at intervals in the circumferential direction;
... is formed by press working, and the press working process includes a step of making the peripheral edge on one side of the hole 2 of the movable plate l into a shape (3, 3) that widens toward the end. This method has characteristics.

By this manufacturing method, the peripheral edges of all the holes 2 on one surface of the movable plate 1 are formed into a shape (3, 3) that widens toward the end by the press working, or Partial peripheral edges of the holes 2 are similarly formed into a shape (3, 3) that widens toward the end.

The present invention is also characterized by the movable plate 1 in which the peripheral edge of the hole 2 on one surface is formed in a shape (3, 3) that widens toward the end, which is obtained by one or more manufacturing methods.

Specifically, the movable side plate l may have peripheral edges of all the holes 2 on one surface being formed into a shape (3, 3) that widens toward the end by the press working, or a plurality of holes on one surface. Partial peripheral edges of the holes 2 are formed in a similar shape (3, 3) that widens toward the end.

[Function] In the process of pressing the holes 2 provided at intervals in the circumferential direction of the movable plate l, the peripheral edge portions on one side of the holes 2 of the movable plate l are shaped to widen toward the end. (3, 3) can be formed.

As a result, a plurality of holes 2 and 2 are provided at intervals in the circumferential direction.
The peripheral edge on one side of ... has a shape that widens toward the end (3,
The movable plate 1 formed in 3) can be obtained.

Therefore, in the viscous fluid cup link device, if a difference in rotational speed occurs between the movable side plate 7 and the fixed side plate 7, the aggressive shape of the peripheral edge of the hole 2 (
Pressure in the rotational direction due to the viscous fluid acts on portions 3 and 3), and the movable plate moves in the axial direction due to the force.

In other words, the hole 2... is actively subjected to the axial movement force due to the viscous fluid at the part (3, 3) that widens toward the end of the periphery.
Movable side plate...or move and fixed side plate 7...
・Get close to. This movement causes the viscous fluid to spread out toward the end (3, 3).

The end-widening shape (3, 3) is pushed away toward the facing side, and the movable side plate l is further pushed in the direction of the stationary side plate 7 due to the pressure increase due to the temperature rise of the viscous fluid on the endward-widening shape (3, 3) side facing away. and increase the hump torque.

The above-mentioned widening shape (3, 3) is formed by processing the peripheral edges of all the holes 2 on one surface of the movable plate 1, or by processing the peripheral edges of partial holes 2. You can do it like this.

Then, the periphery of all the holes 2 on one side,
According to the movable side plate l formed in a shape that widens toward the end (3, 3), the hump torque can be increased the most.

Furthermore, according to the movable plate l in which the peripheral edge of a partial hole 2 among the plurality of holes 2 on one surface is formed into a shape (3, 3) that widens toward the end, the degree of increase in hump torque can be adjusted. .

[Example] Examples will be described below based on the accompanying drawings.

FIG. 1 is a schematic front view of a movable plate l used in the viscous fluid coupling device. This disk-shaped plate l is provided with a large number of slit-like holes 2 radially at intervals in the circumferential direction, and the peripheral edges on both sides in the circumferential direction on one surface of each slit-like hole 2. As shown enlarged in FIGS. 2 and 3, it is formed in a tapered surface 3.3 that widens toward the end. Further, the peripheral edges on both sides in the circumferential direction on the other surface of the slit-like hole 2 remain as the edge-like corner parts 4, 4.

In the embodiment, the movable side plate l has an outer peripheral spline part 5 and an inner peripheral circular part 6, and the outer peripheral spline part 5 is integral with an outer cylindrical member forming one of the input and output shafts (not shown) in the rotation direction, and is rotated in the axial direction. are movably connected. .

FIG. 4 shows a group of 7 fixed side plates and a movable side plate that are integrally connected in the rotational direction by spline fitting to a shaft member or an inner cylinder member forming the other of the input/output shafts (not shown) and fixed in the axial direction by a guide ring. An example of the arrangement relationship with the first group of plates is shown. That is, the fixed side plate 7 is also provided with a large number of holes 8 at intervals in the circumferential direction, and the movable side plates 7 and the fixed side plates 8 are arranged in rows alternately in the axial direction. A fluid working chamber is formed by filling and sealing the space with viscous fluid (silicon oil). Then, the two movable plates 1.1 sandwiching the fixed plate 7 have slit holes 2 and a tapered surface 3 on the peripheral edge.
, 3 are facing each other.

According to the viscous fluid coupling (viscous coupling) device having the above plate arrangement, both plates 1.7
When a difference in rotational speed occurs between them, pressure in the rotational direction due to the silicone oil acts on the tapered surface 3.3 of the peripheral edge of the slit hole forming 2, and the movable plate 1 moves in the axial direction by the force.

In other words, by actively receiving the axial moving force from the silicone oil on the tapered surface 3°3 of the peripheral edge of the slit hole 2, the movable plate l moves in the axial direction as shown in Fig. 5, and the fixed plate l moves in the axial direction. Approach 7. Due to this movement, the silicone oil on the side where the tapered surface 3.3 does not face is pushed away to the side where the tapered surface 3.3 faces.
The movable plate 1 is further pressed in the direction of the fixed plate 7 due to an increase in pressure due to a rise in the temperature of the silicone oil on the side facing the movable plate 3, so that the hump torque can be increased.

In the above, in particular, the press working of the hole 2 of the movable side plate l is carried out by the first method shown in FIGS. 6 and 7, the second method shown in FIGS. 8 and 9, or the first method shown in FIGS.
According to the third method shown in Figure 0, the tapered surface 3°3 of the peripheral edge of the hole 2 is actively formed.

1st plan method> In FIG. 6 showing the drawing process in pre-processing, 11 is a punch, 15 is a die, and one part of the punch 11 is the curved part 1.
2, and the outer periphery of the punch 11 is the hole 1 of the tie 15.
It has a smaller shape than the inner circumference of No. 6.

The movable plate 1 is placed and set on the upper surface of the die 5, and the punch 11 is lowered to deform the material of the plate 1 using the curved surface portion 12 and draw it.

As a result, a curved tapered surface 3.3 is formed at the shoulder of the constricted portion on the upper surface of the plate l.

Next, punching is performed using the punch 21 and tie 25 shown in FIG.
2, and the outer periphery of the punch 21 is connected to the hole 26 of the die 25.
It has a shape that approximately matches the inner periphery of.

Place the plate 1 to the left on the two sides of such a die 25'', set the drawing part in the hole 26 (1), lower the punch 21, and punch out the hole 2 at the edge 23 around the flat part 22. do. As a result, the curved tapered surfaces 3, 3 are left at the peripheral edge of the -h plane of the hole 2, and the peripheral edge of the lower surface of the hole 2 becomes edge-shaped corners 4, 4.

<Second plan method> In Figure 8, which shows the pressing process after pre-processing, punch 1
Both sides of the lower part of 1 are tapered surface parts 13, 13,
The width of this Dever surface portion 13.13 is the width of the hole 16 of the tie 15.
It is sufficiently larger than .

1 is placed and set on the movable side play 1 on the two sides of such a tie 15'', and the punch 11 is lowered to form the tapered surface part 13.1.
3, the material of the plate l is deformed and pressed. As a result, linear tapered surfaces 3, 3 are formed on the upper surface of the plate l.

Next, as shown in FIG. 9, the plate l is placed on the upper surface of the die 25 similar to that shown in FIG.
Hole 2 is punched out in Step 3. As a result, the linear tapered surface 3.3 remains on the upper peripheral edge of the hole 2, while the lower peripheral edge of the hole 2 becomes an edge-shaped corner 4.4.

3rd plan method> In Figure 10, 31 is a punch, 35 is a die,
The punch 31 is integrally provided with wide tapered surface portions 33, 33 on both sides of the portion spaced upward from the edge 32 around the lower surface.

Then, the punch 31 is lowered to the plate l placed a on the upper surface of the die 35 having the hole 36, and the hole 2 is first punched out with the edge 32 at the bottom of the bunch 31 as shown in FIG.
Subsequently, the punch 31 is lowered, and as shown in the same figure (b), the punch 31'';
Hole 2. J:, the peripheral edge of the surface is deformed to form linear tapered surfaces 3, 3 on both sides.

In this way, by continuously performing punching and pressing deformation in the process of press working with one punch 31, the lower surface of the hole 2 is made into edge-shaped corner portions 4, 4, and the hole 2 is The linear tapered surface 3,
It is possible to form 3.

As described above, the present invention provides a tapered surface 3 by actively chamfering the peripheral edge of the hole 2 of the movable plate 1.
, 3.

In the following embodiments, the movable plate l has been described in which the tapered surfaces 3.3 are formed by aggressive chamfering on the peripheral edges of all the holes 2. For example, according to the first method or the second method, the holes 2 . Partial hole 2
The tapered surface 3.degree. 3 may be formed by aggressive chamfering only on the peripheral edge.

In this way, the movable side leaves a positive tapered surface 3°3 due to pre-processing pressed by the bunch 11 only on the peripheral edge of a partial hole 2 among the plurality of holes 2 on one side. According to the plate 1, it is possible to adjust the degree of increase in hump torque.

Here, the positive machining of the tapered surface on the peripheral edge of the hole may be carried out randomly, but it is possible to process a hole having a peripheral edge with a positive tapered surface as in the second embodiment shown in FIG. 11, and such a tapered surface. According to a movable plate in which a plurality of holes having no peripheral edge are arranged circumferentially at equal intervals and adjacent to each other in a point-symmetrical manner, when the movable plate moves in the axial direction, You can improve your balance.

In other words, 3 in FIG. 11 shows a slit in which the tapered surfaces 3, 3 having an aggressively widening shape are formed on the peripheral edges on both sides in the circumferential direction by the first method, the second method, or the third method. Three slit-shaped holes 2 are arranged adjacent to each other in the circumferential direction, and two slit-shaped holes 2 without a positive tapered surface on the peripheral edge are arranged adjacent to each other in the circumferential direction between them. The movable side plate 1 is arranged point-symmetrically at equal intervals in the direction.

According to the movable side plate l described above, the number of slit-like holes 2 (in the illustration, three adjacent slit-like holes 2) are arranged point-symmetrically at equal intervals in the circumferential direction and have a peripheral edge formed by a positively tapered surface 3.3. The hang torque can be adjusted in accordance with the number of slit-like holes 2 (in the illustration, two adjacent to each other) that do not have such a tapered surface on the periphery, and the Good balance of the movable plate 1 can be obtained.

Note that the connection relationship between the movable side plate and the fixed side plate with the input/output shafts may be reversed from that in the embodiment, and the shape of the plate hole may also be arbitrary.

[Effects of the Invention] As described above, according to the present invention, #i is placed at intervals in the circumferential direction of the movable plate in the viscous fluid coupling device.
In the step of press working several holes, the peripheral edge on one side of the hole in the movable plate can be formed into a shape that widens toward the end.

As a result, the peripheral edge on one side of a plurality of holes provided at intervals in the circumferential direction,! ! It is possible to obtain a movable side plate formed in a unipolar shape that widens toward the end.

Therefore, in a viscous fluid coupling device, when a difference in rotational speed occurs between the movable side plate and the fixed side plate, pressure in the rotational direction due to the viscous fluid acts on the end-widening portion of the hole periphery, and this force causes the movable side plate to moves in the axial direction.

In other words, the movable side plate moves and approaches the fixed side plate by actively receiving the axial moving force caused by the viscous fluid at the end-widening portion of the hole periphery. Due to this movement, the viscous fluid on the side that does not face the divergent shape part is pushed away to the side that faces the divergent shape part, and due to the pressure increase due to the temperature rise of the viscous fluid on the side facing the divergent shape part, the movable side plate moves toward the fixed side plate. Since it is pressed even further, the hump torque can be increased.

The above-described widening shape portion may be formed on the peripheral edges of all the holes on one surface of the movable plate, or may be formed on the peripheral edges of only a portion of the holes.

According to the movable side plate in which the peripheral edges of all the holes on one surface are formed in a shape that widens toward the end, the hump torque can be maximized.

Further, according to the movable plate in which the peripheral edges of some of the plurality of holes on one surface are formed in a shape that widens at two ends, the degree of increase in hump torque can be adjusted.

[Brief explanation of the drawing]

Figure 1 is a schematic front view of the movable side plate showing the first embodiment, Figure 2 is an enlarged view of its main parts, and Figures 3 (a) and (b) are taken along the line ■-■ in Figure 2. Each sectional view, FIG. 4 is a sectional view showing an example of the arrangement relationship with the stationary side plate, and FIG. 5 is a sectional view during hump action. 6 and 7 are schematic diagrams showing the processing order for explaining the first method according to the present invention, and FIGS. 8 and 9 are schematic diagrams showing the processing order for explaining the second method. Figure 1O (a) and (
FIG. 11 is an enlarged front view of the movable side plate showing the second embodiment. In addition, in the drawing, l is a movable side plate, 2 is a hole, 3 is a peripheral edge portion (tapered surface) that widens toward the end, 7 is a fixed side plate, 1
1 is a push punch, 21 is a punch, and 31 is a punch and push punch. Patent applicant: Agent for Honda Motor Co., Ltd.
Patent attorney r 1) Department of patent attorney
Kuni Ohashi 4 Patent Attorney Koyama
Figure 1/ Figure 2 (a) ri (/'' and Figure 4 Figure 5 Figure 6 Figure 7 ○ M11

Claims (1)

[Claims] 1. A group of fixed side plates connected to one of the input/output shafts and fixed in the axial direction, and individual fixed side plates connected to the other of the input/output shafts and movable in the axial direction. A method for manufacturing a movable plate in a viscous fluid coupling device comprising a group of movable plates disposed in between and a viscous fluid interposed between fixed and movable plates, the movable plate being arranged at intervals in the circumferential direction. A method in which the plurality of holes are formed by press working, characterized in that the press working step includes a step of shaping the peripheral edge on one side of the hole of the movable side plate into a shape that widens toward the end. A method for manufacturing a movable side plate in a viscous fluid coupling device. 2. The movable side plate in the viscous fluid coupling device according to claim 1, characterized in that the peripheral edges of all the holes on one surface of the movable side plate are formed into a shape that widens toward the end by the press working. Production method. 3. The viscous fluid coupling according to claim 1, characterized in that the peripheral edges of some of the plurality of holes on one surface of the movable side plate are formed into a shape that widens toward the end by the press working. A method for manufacturing a movable side plate in an apparatus. 4. The movable side plate obtained by the manufacturing method according to claim 1, wherein a peripheral edge of the hole on one surface is formed in a shape that widens toward the end. Movable side plate. 5. The movable side plate obtained by the manufacturing method according to claim 2, characterized in that the peripheral edges of all the holes on one surface are formed into a shape that widens toward the end by the press working. The movable side plate of a viscous fluid coupling device. 6. The movable side plate obtained by the manufacturing method according to claim 3, wherein peripheral edges of some of the plurality of holes on one surface are formed into a shape that widens toward the end by the press working. A movable side plate of a viscous fluid coupling device, characterized by: