CN212899449U - Driving disc of clutch - Google Patents

Abstract

A clutch driving disc is made of powder metallurgy metal, a pair of symmetrically arranged supporting columns are arranged above a disc-shaped supporting plate, a gear with the outer diameter smaller than that of the supporting plate is arranged below the supporting plate, and the diameter of an inner hole of the gear is smaller than that of the inner hole of the supporting plate; the side wall of the inner hole of the gear is provided with a plurality of notches which are uniformly distributed along the circumferential direction, the axes of the notches are parallel to the axis of the inner hole of the gear, and the cross sections of the notches are arc-shaped; a plurality of sliding grooves are formed in the upper surface of the inner hole of the gear, and the horizontal projection of each sliding groove is in an inverted right trapezoid shape; the upper part of the sliding chute is provided with an opening, the number of the sliding chute and the number of the notches are the same, and the sliding chute and the notches are distributed at intervals; the lower surface of the gear is provided with a plurality of positioning holes which are uniformly distributed along the circumference. The support column of the utility model replaces the positioning pin and forms a whole with the supporting plate, so that the falling problem can not occur; the size precision of the sliding groove is higher, the production efficiency is improved, and the manufacturing cost is reduced.

Description

Driving disc of clutch

Technical Field

The utility model relates to an electric motor car motor technical field especially relates to a clutch driving disc.

Background

As shown in fig. 5 to 7, a clutch driving disc in the prior art includes a second notch 02, a second supporting plate 03, a second sliding groove 04, a second gear 05, a second station groove 06, a second positioning hole 07 and a positioning pin 8; a pair of symmetrically arranged positioning pins 8 is fixed on the disc-shaped supporting plate II 03, a gear II 05 with the outer diameter smaller than that of the supporting plate II 03 is arranged below the supporting plate II 03, and the diameter of an inner hole of the gear II 05 is smaller than that of the inner hole of the supporting plate II 03; the side wall of the inner hole of the second gear 05 is provided with a plurality of notches II 02 which are uniformly distributed along the circumferential direction, the axis of the notch II 02 is parallel to the axis of the inner hole of the second gear 05, and the section of the notch II 02 is arc-shaped; the top surface of an inner hole of the second gear 05 is provided with a plurality of second sliding chutes 04, and the horizontal projection of the second sliding chutes 04 is in an inverted right trapezoid shape; an opening is formed above the second sliding groove 04, the number of the second sliding groove 04 is the same as that of the second notch 02, and the second sliding groove 04 and the second notch 02 are distributed at intervals; the second gear 05 is provided with a plurality of positioning holes II 07 which are uniformly distributed along the circumference, the second positioning holes 07 penetrate through the second gear 05, and the second positioning holes 07 consist of an upper hole site and a lower hole site which are different in diameter.

The clutch driving disc in the prior art is produced by a steel piece, the process is complex, the processing difficulty is high, the cost is high, and workpieces of different batches have size deviation. After long-time work, the positioning pin 8 is easy to fall off from the second supporting plate 03, the work of the driving disc is affected, and the clutch is failed.

SUMMERY OF THE UTILITY MODEL

Problem to among the prior art scheme, the utility model provides a clutch positioning plate.

The utility model provides a following technical scheme: a clutch driving disc is made of powder metallurgy metal, a pair of symmetrically arranged supporting columns are arranged above a disc-shaped supporting plate, a gear with the outer diameter smaller than that of the supporting plate is arranged below the supporting plate, and the diameter of an inner hole of the gear is smaller than that of the inner hole of the supporting plate; the side wall of the inner hole of the gear is provided with a plurality of notches which are uniformly distributed along the circumferential direction, the axes of the notches are parallel to the axis of the inner hole of the gear, and the cross sections of the notches are arc-shaped; a plurality of sliding grooves are formed in the upper surface of the inner hole of the gear, and the horizontal projection of each sliding groove is in an inverted right trapezoid shape; the upper part of the sliding chute is provided with an opening, the number of the sliding chute and the number of the notches are the same, and the sliding chute and the notches are distributed at intervals; the lower surface of the gear is provided with a plurality of positioning holes which are uniformly distributed along the circumference.

Furthermore, the gear is in be equipped with a pair of station groove under the pillar, the width in station groove is 2~5 dogteeth, the tooth surface of gear is divided equally except that the station groove has the dogtooth.

Further, the number of the positioning holes is 3.

The utility model has the advantages that:

1. the support column of the utility model replaces the positioning pin and forms a whole with the supporting plate, so that the falling problem can not occur;

2. the size precision of the sliding chute is higher, the sizes of products in different batches can be kept consistent, the size of each sliding chute is the same, the sliding between the sliding chute and the wedge-shaped sliding block can be ensured not to be blocked, and the transmission efficiency is improved;

3. the utility model discloses a powder metallurgy technology manufacturing has improved production efficiency, has reduced manufacturing cost.

Drawings

Fig. 1 is a schematic diagram of an embodiment of the present invention.

Fig. 2 is a schematic diagram of another embodiment of the present invention.

Fig. 3 is a cross-sectional view of an embodiment of the present invention.

Fig. 4 is a bottom view of the embodiment of fig. 1.

FIG. 5 is a schematic illustration of one prior art embodiment of a clutch driving disk.

Figure 6 is a cross-sectional view taken along plane a-a of the embodiment shown in figure 5.

FIG. 7 is a schematic illustration of another prior art embodiment of a clutch driving disk.

FIG. 8 is a schematic view of a prior art clutch alignment block;

FIG. 9 is a cross-sectional view showing the main structure of a clutch according to the prior art;

FIG. 10 is a schematic view of the housing of the embodiment of FIG. 9 engaged with a locating block;

fig. 11 is a partial schematic view of the bottom structure of the housing of the embodiment shown in fig. 9.

Reference numerals: 1-a pillar; 2-a notch; 3-a supporting plate; 4-a chute; 5-a gear; 6-station groove; 7-positioning holes; 8-a positioning pin; 9-positioning blocks; 10-a wedge-shaped slide block; 11-a housing; 12-a friction plate; 13-a platen; 14-a driven disc; 15-centrifugal mass; 16-a spring; 17-a rotating shaft; 18-square hole;

02-gap two; 03-supporting plate II; 04-a second chute; 05-gear two; 06-station groove II; 07-positioning hole two.

Detailed Description

The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings and reference numerals, so that those skilled in the art can implement the embodiments after studying the specification. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The utility model provides a clutch driving disc as shown in figures 1-4, which is made of powder metallurgy metal, a pair of symmetrically arranged supporting columns 1 are arranged above a disc-shaped supporting plate 3, a gear 5 with an outer diameter smaller than that of the supporting plate 3 is arranged below the supporting plate 3, and the inner hole diameter of the gear 5 is smaller than that of the supporting plate 3; the side wall of the inner hole of the gear 5 is provided with a plurality of notches 2 which are uniformly arranged along the circumferential direction, the axial lines of the notches 2 are parallel to the axial line of the inner hole of the gear 5, and the cross sections of the notches 2 are arc-shaped; a plurality of sliding grooves 4 are formed in the upper surface of an inner hole of the gear 5, and the horizontal projection of each sliding groove 4 is in an inverted right trapezoid shape; an opening is formed above the sliding groove 4, the number of the sliding groove 4 is the same as that of the notches 2, and the sliding groove 4 and the notches 2 are distributed at intervals; the lower surface of the gear 5 is provided with a plurality of positioning holes 7 which are uniformly distributed along the circumference.

Structure of electric vehicle motor clutch: as shown in fig. 8 to 11, a rotating shaft of the motor is matched with a central hole of the shell 11, and 3 clamping blocks distributed along the circumference are arranged in the middle above the shell 11; the side surface of the positioning block 9 is provided with 3 blocks along the radial direction thereof, and the bottom of the outermost side of each block is provided with a wedge-shaped sliding block 10; the square block of the positioning block 9 is embedded into the gap of the fixture block of the shell 11 and fixed on the upper surface of the shell 11; the supporting plate 3 of the driving disc is in contact with the upper surface of the shell 11, a clamping block of the shell 11 is matched with an inner hole of the gear 5, and the support 1 penetrates through a square hole 18 of the shell 11 and is matched with a U-shaped groove of a centrifugal block 15; the number of the sliding grooves 4 and the number of the notches 2 can be 3, the wedge-shaped sliding blocks 10 are inserted into the sliding grooves 4, and the sliding grooves 4 can slide and rise along the wedge-shaped sliding blocks 10; a plurality of friction plates 12 and a pressure plate 13 are matched with the convex teeth of the gear 5, and the friction plates 12 and the pressure plate 13 are arranged at intervals; a spring 16 is arranged in the positioning hole 7, the driven disc 14 is positioned above a clamping block of the shell 11, the lower surface of the driven disc 14 is in contact with the spring 16, and the upper surface of the driven disc is connected with a component for transmitting power to a wheel;

as shown in fig. 9 and 11, two centrifugal blocks 15 are disposed on the lower surface of the housing 11, the centrifugal blocks 15 are arc-shaped, the inner arc surface of each centrifugal block 15 is coaxial with the housing 11, and the centrifugal blocks 15 can rotate around a rotating shaft 17 fixed on the housing 11; one end of the centrifugal block 15 is provided with a U-shaped groove, and the U-shaped groove is matched with the positioning pin 8.

The working principle of the driving disc of the clutch is as follows: as shown in fig. 8 to 11, a rotating shaft of the motor drives the housing 11 to rotate, the centrifugal block 15 rotates around the rotating shaft 17 under the action of centrifugal force, a portion of the centrifugal block 15 close to the central hole of the housing 11 is thrown away in a direction far from the axis of the housing 11, the U-shaped groove of the centrifugal block 15 drives the pillar 1 to rotate around the center of the housing 11, and the driving disk rotates relative to the housing 11 as a whole. When the driving disk does not rotate, the groove bottom of the sliding groove 4 is in contact with the wedge-shaped sliding block 10; when the driving disk rotates, the sliding chute 4 slides along the wedge-shaped sliding block 10, the wedge-shaped sliding block 10 is in contact with the inclined surface of the sliding chute 4, the driving disk generates axial movement, and the supporting plate 3 of the driving disk can support the friction plate 12 and the pressure plate 13 to move towards the driven disk 14; at this time, the spring 16 is compressed, the friction plates 12 are in contact with the driven plate 14, and after the friction plates 12 and the pressure plate 13 are extruded together, an integral body is formed under the action of friction force, and the adjacent friction plates 12 and the pressure plate 13 cannot slide relatively;

the convex teeth of the gear 5 are matched with the tooth-shaped grooves on the inner side of the pressure plate 13, the gear 5 drives the pressure plate 13 and the friction plates 12 to rotate, the friction plates 12 transmit power to the driven plate 14, and the driven plate 14 transmits the power to wheels of the electric vehicle through a transmission piece. When the rotating speed of the motor is within a rated range, the strut 1 cannot be separated from the U-shaped groove of the centrifugal block 15, the swinging range of the U-shaped groove cannot exceed the width of the square hole 18, and the sliding groove 4 is always meshed with the wedge-shaped sliding block 10; when the rotating speed of the motor exceeds a rated range, the supporting column 1 is separated from the U-shaped groove, the axial movement of the driving disc is overlarge, the wedge-shaped sliding block 10 slides out of the sliding groove 4 to reach the connecting surface of the gear 5 and the supporting plate 3 and then slides into the notch 2, at the moment, the driving disc moves upwards towards the surface of the shell 11 in the axial direction, the pressure of the supporting plate 3 on the pressure plate 13 and the friction plate 12 disappears, the friction force between the pressure plate 13 and the friction plate 12 disappears, the driven disc 14 is separated from the friction plate 12 under the action of the spring 16, the power transmitted to wheels by the motor is interrupted, the motor idles all the time, and the overload condition cannot occur.

It should be noted that, as shown in fig. 1, the direction of rotation of the motor is defined as a positive direction indicated by an arrow, and when the motor rotates in the positive direction, the sliding groove 04 can slide along the wedge slider 10; when the motor rotates reversely, the sliding groove 04 and the wedge-shaped sliding block 10 are locked, and the driving disc cannot move axially.

Specifically, the utility model discloses wholly make for powder metallurgy, pillar 1 and layer board 3 are a whole, work as centrifugation piece 15 receives centrifugal force to do all can the pillar 1 back, pillar 1 can drive the utility model discloses rotate, transmission effect is good, and centrifugation piece 15 receives centrifugal force to do all can on locating pin 8 among the prior art, and after long-term work, the connection between locating pin 8 and the layer board 03 can appear rocking, influences the transmission effect of clutch.

Specifically, the gear 5 is arranged under the pillar 1, the pair of station grooves 6 are arranged below the pillar 1, the width of each station groove 6 can be 3 convex teeth, and convex teeth are distributed on the tooth surface of the gear 5 except the station grooves 6. The station groove 6 is required by the powder metallurgy process engineering and does not participate in the transmission process of the driving disc.

Specifically, the number of the positioning holes 7 may be 3, so that after the spring 16 is placed in the positioning hole 7, the distribution positions of the positioning holes can ensure that the stress between the spring 16 and the driven plate 14 is uniform, and if the number of the positioning holes 7 is increased, the positioning holes 7 may interfere with the sliding grooves 4, which affects the strength of the gear 5.

The foregoing is directed to embodiments of the present invention, and the description is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (3)

1. A clutch driving plate characterized in that: the material is powder metallurgy metal, a pair of symmetrically arranged supporting columns (1) is arranged above a disc-shaped supporting plate (3), a gear (5) with the outer diameter smaller than that of the supporting plate (3) is arranged below the supporting plate (3), and the diameter of an inner hole of the gear (5) is smaller than that of the inner hole of the supporting plate (3); the side wall of the inner hole of the gear (5) is provided with a plurality of notches (2) which are uniformly arranged along the circumferential direction, the axial line of each notch (2) is parallel to the axial line of the inner hole of the gear (5), and the cross section of each notch (2) is arc-shaped; a plurality of sliding grooves (4) are formed in the upper surface of an inner hole of the gear (5), and the horizontal projection of each sliding groove (4) is in an inverted right trapezoid shape; the upper part of the sliding chute (4) is provided with an opening, the number of the sliding chute (4) is the same as that of the notches (2), and the sliding chute (4) and the notches (2) are distributed at intervals; the lower surface of the gear (5) is provided with a plurality of positioning holes (7) which are uniformly distributed along the circumference.

2. A clutch driving plate as claimed in claim 1, characterized in that: gear (5) in be equipped with a pair of station groove (6) under pillar (1), the width in station groove (6) is 2~5 dogteeth, the flank of tooth of gear (5) except that station groove (6) are equallyd divide outward and have the dogtooth.

3. A clutch driving plate as claimed in claim 1, characterized in that: the number of the positioning holes (7) is 3.

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