CN211314919U - Vibration-damping transmission connecting device of electromagnetic power-off brake - Google Patents

Abstract

The utility model belongs to the technical field of machinery, a damping transmission coupling device of electromagnetism power-off brake is related to. The electromagnetic power-off brake is characterized in that the brake disc is provided with an elastic sheet, the elastic sheet comprises an elastic sheet substrate which is in contact with the end face of the brake disc, the elastic sheet substrate is provided with a blocking sheet which is turned inwards towards the spline groove and is formed beside two side walls of the spline groove corresponding to the spline groove of the center hole of the brake disc, and an elastic gap is formed between the blocking sheet and the side walls of the spline groove when the blocking sheet is in a free state. It can effectively reduce the noise between the brake disc and the rotor.

Description

Vibration-damping transmission connecting device of electromagnetic power-off brake

Technical Field

The utility model belongs to the technical field of machinery, a damping transmission coupling device of electromagnetism power-off brake is related to.

Background

The electromagnetic power-off brake consists of iron core, spring, armature, friction plate, brake disc, driving connector and other parts and is used mainly in braking various motors. After the iron core of the electromagnetic power-off brake is powered on, a winding generates a magnetic field to suck the armature back, at the moment, the armature compresses a spring fixed in the iron core, and a motor rotating shaft connected with a brake disc through a connecting device can freely rotate; when the iron core loses power, the magnetic field of the iron core disappears, and then the attraction force to the armature is lost, the armature is ejected out by the spring, the armature and the brake disc are mutually pressed, the brake torque is generated on the brake disc through the friction plate to limit the rotation of the brake disc, and the brake disc is connected with the rotor through the transmission connecting device, so that the rotation of the motor rotor is limited.

The working principle of the electromagnetic power-off brake determines that the brake disc has displacement freedom degree in the axial direction when working, so that a certain gap exists in the transmission connection between the brake disc and the rotor, and the existence of the gap is very likely to cause noise and vibration to be generated at the transmission connection part when the motor runs, thereby influencing the user experience of a user.

Disclosure of Invention

The utility model aims at having above-mentioned problem to current technique, provide a can effectively reduce the damping transmission coupling device of the electromagnetic power-off brake of the noise between brake disc and the rotor.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides an electromagnetism loses electric brake's damping transmission coupling device, electromagnetism loses electric brake and includes the brake disc, the connecting hole has been seted up at the center of brake disc, the sunken internal spline groove that forms of pore wall of connecting hole, be provided with the flexure strip on the brake disc, the flexure strip includes the flexure strip substrate with brake disc end face contact, and the flexure strip substrate is equipped with to spline inslot turn over a book and form the other separation blade in spline groove both sides wall corresponding to the spline groove department of brake disc centre bore, the separation blade is in free state when and has the elastic gap between the lateral wall in spline groove. The rotor can be embedded into the connecting hole of the brake disc, and is provided with a spline, and the spline on the rotor can be embedded into a spline groove; before the splines of the rotor are matched with the brake disc, the width of the spline grooves of the brake disc limited by the two blocking sheets is smaller than the width of the splines of the rotor.

When the brake disc is connected with electric motor rotor, electric motor rotor's spline compression separation blade to eliminated the fit clearance between rotor spline and the brake disc spline groove, the separation blade forms elastic buffer between brake disc and electric motor rotor's spline, thereby can effectively eliminate the noise that sends because of the striking between electric motor rotor spline and the brake disc among the motor operation process, reduced the running noise of motor. The elastic piece substrate can realize good location and good stability to the separation blade, after long-time use, still can play better cushioning effect to can reduce the noise between brake disc and the rotor, improve user's user experience.

Preferably, an inclined included angle is formed between the blocking sheet and the side wall of the spline groove when the blocking sheet is in a free state, so that the elastic gap is formed between the blocking sheet and the side wall of the spline groove. When the separation blade is in a free state, an inclined included angle is formed between the separation blade and the side wall of the spline groove, so that a gap is formed between the separation blade and the side wall of the spline groove.

Preferably, the blocking piece is in a curved surface shape in a free state, so that the elastic gap is formed between the blocking piece and the side wall of the spline groove when the blocking piece is in the free state. The curved surface shape of the baffle can be compressed by the rotor spline so as to eliminate the fit clearance between the rotor spline and the brake disc spline groove. The curved surface can be in an arc shape, or in a folded angle shape, or in a wave shape, or in other cross-sectional shapes.

Preferably, the end part of the baffle plate is bent to form a limiting plate, the limiting plate is attached to the brake disc, a limiting notch is formed between the baffle plate and the limiting plate, and the brake disc can be partially embedded into the limiting notch. The setting of this structure for the setting that the flexure strip can be better on the brake disc, has improved the stability that the flexure strip is connected with the brake disc, makes when the motor operation, noise absorption and impact force that the separation blade can be stable.

Preferably, the baffle plate and the limiting plate are in smooth transition. Smooth transition between separation blade and the limiting plate enables the separation blade to obtain better elasticity to make the separation blade can play better buffering noise reduction effect between brake disc and the rotor.

Preferably, the elastic piece substrate is provided with a stop piece in each spline groove corresponding to the central hole of the brake disc. The separation blade is arranged in each spline groove, so that the buffering and noise reduction effects of the separation blade on the brake disc and the rotor can be further enhanced.

Preferably, the inclined included angle is 1-10 degrees. The angle of the inclined included angle is controlled to be 1-10 degrees, so that elastic buffering of the blocking piece between the brake disc and the motor rotor can be guaranteed, and assembling convenience between the brake disc and the motor rotor can be guaranteed.

Preferably, be equipped with the installation department on the elastic sheet base piece, the separation blade sets up the both ends at the installation department, be equipped with the connecting portion of being connected with the separation blade on the installation department, the notch of stepping down has between connecting portion and the installation department. The setting of this structure for the separation blade can be better set up in the internal spline inslot, to the brake disc that the size is similar, the flexure strip can all be installed, further improvement the commonality of flexure strip.

Preferably, the elastic sheet is made of metal elastic material. Adopt metal elastic material to make the flexure strip can improve the durable degree of flexure strip to a great extent under the prerequisite of noise abatement and buffering to make the structure and the intensity of flexure strip can be more stable.

Compared with the prior art, the damping transmission connecting device of the electromagnetic power-off brake has the following advantages:

1. the separation blade forms elastic buffer between the spline of brake disc and electric motor rotor to can effectively eliminate the noise that sends because of the striking between electric motor rotor spline and the brake disc among the motor operation process, reduce the operation noise of motor. The elastic piece substrate can realize good location and good stability to the separation blade, after long-time use, still can play better cushioning effect to can reduce the noise between brake disc and the rotor, improve user's user experience.

The effect of limiting plate for the setting that the flexure strip can be better on the brake disc, improved the stability that the flexure strip is connected with the brake disc, make when the motor operation, noise absorption and impact force that the separation blade can be stable.

Drawings

FIG. 1 is a schematic structural view of the vibration damping transmission coupling device of the electromagnetic power-off brake after being assembled;

FIG. 2 is a schematic structural view of the vibration reduction transmission coupling device and the elastic sheet of the electromagnetic power-off brake after being assembled;

FIG. 3 is a schematic structural diagram of an elastic sheet in the vibration reduction transmission coupling device of the electromagnetic power loss brake;

FIG. 4 is a cross-sectional view C-C of FIG. 2;

FIG. 5 is an enlarged view at I of FIG. 4;

FIG. 6 is another schematic structural diagram of the damping transmission coupling device of the electromagnetic power-off brake;

FIG. 7 is a cross-sectional view D-D of FIG. 6;

FIG. 8 is an enlarged view at K of FIG. 7;

fig. 9 is a schematic perspective view of the elastic sheet of the present invention;

fig. 10 is a schematic front view of the elastic sheet of the present invention.

In the figure, 1, a brake disc; 11. connecting holes; 12. a spline groove; 2. an elastic sheet; 21. a baffle plate; 22. a limiting plate; 23. a limiting notch; 24. an installation part; 25. a connecting portion; 26. a abdication notch; 27. an elastic sheet substrate; 3. a rotor; 31. a spline.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example 1:

as shown in fig. 1 and 2, the damping transmission coupling device of the electromagnetic power-off brake comprises a brake disc 1, wherein a connecting hole 11 is formed in the middle of the brake disc 1, and the hole wall of the connecting hole 11 is recessed to form an internal spline groove 12.

The brake disc 1 is provided with an elastic sheet 2, and the elastic sheet 2 is made of metal elastic materials. The elastic piece 2 comprises an annular elastic piece substrate 27 in end surface contact with the brake disc 1, a blocking piece 21 which is turned inwards towards the spline grooves and formed beside two side walls of the spline grooves is arranged at each spline groove 12 of the elastic piece substrate 27 corresponding to the center hole of the brake disc, as shown in fig. 4 and 5, an inclined included angle B is formed between the blocking piece and the side walls of the spline grooves when the blocking piece is in a free state, and the angle of the inclined included angle B is 4.5 degrees.

The end of the baffle 21 is bent to form a limiting plate 22, and the baffle 21 and the limiting plate 22 are smoothly transited. The limit plate 22 is attached to the brake disc 1, a limit notch 23 is formed between the baffle 21 and the limit plate 22, and the brake disc 1 can be partially embedded into the limit notch 23.

The elastic sheet base is provided with a mounting part 24, the blocking pieces 21 are arranged at two ends of the mounting part 24, the mounting part 24 is provided with a connecting part 25 connected with the blocking pieces 21, and a yielding notch 26 is arranged between the connecting part 25 and the mounting part 24.

Thereby the separation blade is formed with an slope contained angle when free state and between the lateral wall of spline groove and forms the elastic gap between the lateral wall that makes separation blade and keyway, and before the spline of rotor and brake disc cooperation, the width that the spline groove of brake disc was injectd by two separation blades is less than the width of rotor spline. As shown in fig. 1 and 2, the rotor 3 can be embedded into the connecting hole 11 of the brake disc 1, and the rotor 3 is provided with a spline 31, the spline 31 on the rotor 3 can be embedded into the spline groove 12, when the brake disc 1 is connected with the rotor 3 of the motor, the spline 31 of the motor rotor compresses the retaining sheet 21 to compress the elastic gap, thereby eliminating the fit gap between the rotor spline and the brake disc spline groove, the retaining sheet 21 forms elastic buffer between the brake disc and the spline of the motor rotor, thereby effectively eliminating the noise generated by the impact between the motor rotor spline and the brake disc in the motor operation process, and reducing the operation noise of the motor. The elastic piece substrate can realize good location and good stability to the separation blade, after long-time use, still can play better cushioning effect to can reduce the noise between brake disc and the rotor, improve user's user experience.

Example 2: as shown in fig. 6 to 10, the blocking piece 21 has a curved shape in the free state, and the curved shape has an arc-shaped cross section, so that an elastic gap 1211 is formed between the blocking piece 21 and the side wall 121 of the spline groove 12 when the blocking piece 21 is in the free state. The curved surface shape of the baffle can be compressed by the rotor spline so as to eliminate the fit clearance between the rotor spline and the brake disc spline groove. As shown in fig. 10, the minimum distance L between two adjacent baffle plates 21 is smaller than the width of the rotor spline, so that the width of the brake disk spline groove defined by the two baffle plates is smaller than the width of the rotor spline before the rotor spline is engaged with the brake disk. The rest of the structure of this example is the same as example 1.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (9)

1. A vibration reduction transmission coupling device of an electromagnetic power-off brake comprises a brake disc, a connecting hole is formed in the center of the brake disc, and the hole wall of the connecting hole is sunken to form an inner spline groove.

2. The vibration reducing transmission coupling device of the electromagnetic power loss brake as claimed in claim 1, wherein an inclined angle is formed between the blocking piece and the side wall of the spline groove when the blocking piece is in the free state, so that the elastic gap is formed between the blocking piece and the side wall of the spline groove.

3. The coupling device of claim 1, wherein the blocking plate is curved when in a free state, such that the elastic gap is formed between the blocking plate and the side wall of the spline groove when the blocking plate is in the free state.

4. The vibration-damping transmission coupling device of the electromagnetic power-off brake of claim 1, wherein the end of the baffle plate (21) is bent to form a limiting plate (22), the limiting plate (22) is attached to the brake disc (1), a limiting notch (23) is formed between the baffle plate (21) and the limiting plate (22), and the brake disc (1) can be partially embedded into the limiting notch (23).

5. The coupling device of the electromagnetic power loss brake with vibration damping and transmission as claimed in claim 4, wherein the baffle plate (21) and the limit plate (22) are smoothly transited.

6. The coupling device of claim 1, 2 or 3, wherein a stop is provided in each spline groove of the base plate corresponding to the center hole of the brake disc.

7. A vibration damping transmission coupling device for an electromagnetic power loss brake as defined in claim 2, wherein said included angle of inclination is 1-10 degrees.

8. The electromagnetic power-off brake damping transmission coupling device according to claim 1, 2 or 3, wherein the elastic sheet base is provided with an installation part (24), the blocking piece (21) is arranged at two ends of the installation part (24), the installation part (24) is provided with a connecting part (25) connected with the blocking piece (21), and a yielding notch (26) is arranged between the connecting part (25) and the installation part (24).

9. The coupling device of the electromagnetic power-off brake with vibration damping and transmission as claimed in claim 1, 2 or 3, characterized in that the elastic sheet (2) is made of metal elastic material.

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