CN216812598U

CN216812598U - Dustproof brake

Info

Publication number: CN216812598U
Application number: CN202220550803.4U
Authority: CN
Inventors: 蓝刚勇; 鲁查; 吴孔建
Original assignee: Aochuang Power Transmission Shenzhen Co ltd
Current assignee: Aochuang Power Transmission Shenzhen Co ltd
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2022-06-24
Anticipated expiration: 2032-03-10

Abstract

The utility model provides a dustproof brake, which comprises a main body, a movable plate, a friction disc, a clutch plate and a sealing structure, wherein the main body comprises a shell, a magnet exciting coil and an elastic assembly which are coaxially arranged in the shell, and the shell is provided with a first installation space which is respectively arranged in the magnet exciting coil and the elastic assembly; the movable plate is positioned in the first installation space; the friction disc is arranged in the first mounting space and is positioned on one side of the movable plate close to the second shaft end; the clutch plate is connected with the movable plate and has the freedom degree of driving the movable plate to be close to or far away from the friction disc; the sealing structure is arranged on one side of the shell, which deviates from the clutch plate. According to the dustproof brake provided by the utility model, the sealing structure is arranged on the shell of the brake, so that the motor and the brake are protected, the protection grade and performance are improved, the installation is simpler and more convenient, and the use is more flexible.

Description

Dustproof brake

Technical Field

The utility model belongs to the technical field of mechanical braking, and particularly relates to a dustproof brake.

Background

The existing thin brake is mainly applied to a joint of a cooperative robot due to the characteristic of thinness or thinness, the installation structure is compact, corresponding sealing measures are not provided for protecting the brake, and particularly when a customer needs to reversely install the brake on a motor, the installation of a sealing structure is inconvenient due to the uniqueness of the installation mode; and most of the brakes are directly nested on the motor shafts due to the thin or extremely thin characteristics of the brakes, but the direct nesting mode is not suitable, and the protection grade and the performance of the motors and the brakes are influenced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a dustproof brake, which aims to meet the sealing requirement when the brake is reversely arranged on a motor and improve the protection grade of the motor and the brake.

In order to achieve the purpose, the utility model adopts the technical scheme that: provided is a dust-proof brake including:

the main body comprises a casing, and an excitation coil and an elastic assembly which are coaxially arranged in the casing, wherein the excitation coil and the elastic assembly are respectively exposed at a first shaft end of the main body, a first installation space respectively positioned in an inner ring of the excitation coil and the elastic assembly is formed in the casing, and the first installation space penetrates through the central position of the casing along the axial direction of the casing;

a movable plate located within the first mounting space, the movable plate being slidably fitted to the main body;

the friction disc is arranged in the first installation space and is positioned on one side of the movable plate close to a second shaft end, the second shaft end is the opposite end of the first shaft end, and the friction disc is used for being connected with a motor shaft;

the clutch plate is positioned at the second shaft end of the main body, is connected with the movable plate and has the freedom degree of driving the movable plate to be close to or far away from the friction disc; and

and the sealing structure is arranged on one side of the shell, which deviates from the clutch plate.

In a possible implementation manner, an annular clamping groove is formed in one side face, deviating from the clutch plate, of the machine shell, the clamping groove is located in the outer ring of the first installation space, and the sealing structure is matched with the clamping groove in a clamping mode.

In some embodiments, the sealing structure is a felt or rubber member.

In one possible implementation, the sealing structure includes:

the connecting part is sleeved on the outer ring of the shell; and

and the periphery of the housing is connected with the connecting part and covers one side of the housing, which deviates from the clutch plate, and the housing is provided with a middle hole for the motor shaft to pass through.

In some embodiments, the outer ring of the casing is provided with an annular labyrinth ring, and the inner ring of the connecting part is provided with a labyrinth groove which is in rotary fit with the labyrinth ring.

In some embodiments, the labyrinth rings are provided in plurality at intervals in the axial direction of the casing, the labyrinth grooves are provided in plurality at intervals in the axial direction of the connecting portion, and the plurality of labyrinth rings correspond to the plurality of labyrinth grooves one to one.

In one possible implementation, the friction disc further comprises a bushing that is fitted to the inner race of the friction disc.

In the embodiment of the application, compared with the prior art, the motor shaft is used for being installed on the motor shaft in the specific implementation process, the motor shaft penetrates through a middle hole of the dustproof brake and is matched with a friction disc in the dustproof brake, the friction disc rotates along with the rotation of the motor shaft, when the motor works normally, the excitation coil is electrified to attract the clutch plate, and the clutch plate drives the movable plate to be far away from the friction disc; when needs braking, excitation coil outage, elastic component kick-backs the extrusion separation and reunion board, and the separation and reunion board drives the fly leaf and is close to the friction disk to on the friction disk, realize the braking through the frictional force between fly leaf and the friction disk, no matter the state of motor work or shut down, the motor shaft passes the mesopore of seal structure, and then realizes the protection to motor and stopper. According to the dustproof brake, the sealing structure is arranged on the shell of the brake and is arranged on one side of the shell, which is far away from the clutch plate, so that the requirement of a customer on reverse installation is met, the motor and the brake can be protected, the protection grade and performance are improved, a sealing ring is not required to be additionally nested on a motor shaft, the installation is simpler and more convenient, and the use is more flexible.

Drawings

Fig. 1 is a schematic front view of a dust-proof brake according to an embodiment of the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

FIG. 3 is an exploded view of a housing and seal arrangement according to an embodiment of the present invention;

fig. 4 is a schematic front view of a dust-proof brake according to a second embodiment of the present invention;

FIG. 5 is a sectional view taken along line B-B of FIG. 4;

fig. 6 is an exploded view of the enclosure and the sealing structure according to the second embodiment of the present invention.

Description of reference numerals:

10-a body; 11-a housing; 111-a snap groove; 112-labyrinth ring; 12-a field coil; 13-a resilient component; 14-a first installation space;

20-a movable plate;

30-a friction disk;

40-a clutch plate;

50-a sealing structure; 51-a connecting portion; 511-labyrinth grooves; 52-a housing;

60-shaft sleeve.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1 to 6 together, the dust-proof brake according to the present invention will now be described. The dustproof brake comprises a main body 10, a movable plate 20, a friction disc 30, a clutch plate 40 and a sealing structure 50, wherein the main body 10 comprises a shell 11, and an excitation coil 12 and an elastic assembly 13 which are coaxially arranged in the shell 11, the excitation coil 12 and the elastic assembly 13 are respectively exposed at a first axial end of the main body 10, a first installation space 14 respectively positioned at an inner ring of the excitation coil 12 and the elastic assembly 13 is formed in the shell 11, and the first installation space 14 penetrates through the central position of the shell 11 along the axial direction of the shell 11; the movable plate 20 is located in the first installation space 14, and the movable plate 20 is slidably fitted to the main body 10; the friction disc 30 is arranged in the first mounting space 14 and is positioned on one side of the movable plate 20 close to a second shaft end, the second shaft end is an opposite end of the first shaft end, and the friction disc 30 is used for being connected with a motor shaft; the clutch plate 40 is located at the second axial end of the main body 10, the clutch plate 40 is connected to the movable plate 20 and has a degree of freedom for driving the movable plate 20 to approach or separate from the friction disc 30; the sealing structure 50 is provided on a side of the housing 11 facing away from the clutch plate 40.

Compared with the prior art, the dustproof brake provided by the embodiment is used for being installed on a motor shaft in specific implementation, the motor shaft penetrates through a middle hole of the dustproof brake and is matched with the friction disc 30 in the dustproof brake, the friction disc 30 rotates along with the rotation of the motor shaft, the excitation coil 12 is electrified to attract the clutch plate 40 when the motor works normally, and the clutch plate 40 drives the movable plate 20 to be far away from the friction disc 30; when braking is needed, the excitation coil 12 is powered off, the elastic assembly 13 rebounds to press the clutch plate 40, the clutch plate 40 drives the movable plate 20 to be close to the friction disc 30 and presses the friction disc 30, braking is achieved through friction force between the movable plate 20 and the friction disc 30, and no matter in a state that the motor works or is stopped, the motor shaft penetrates through the middle hole of the sealing structure 50, and therefore protection of the motor and the brake is achieved. According to the dustproof brake, the sealing structure 50 is arranged on the shell 11 of the brake and is arranged on one side, away from the clutch plate 40, of the shell 11, so that the requirement of a customer for reverse installation is met, the motor and the brake can be protected, the protection grade and performance are improved, a sealing ring does not need to be additionally nested on a motor shaft, the installation is simpler and more convenient, and the use is more flexible.

In some embodiments, a specific manner of matching the housing 11 and the sealing structure 50 may be as shown in fig. 1 to 3. Referring to fig. 1 to 3, an annular engaging groove 111 is formed in a side surface of the housing 11 facing away from the clutch plate 40, the engaging groove 111 is located at an outer ring of the first mounting space 14, and the sealing structure 50 is engaged with the engaging groove 111. Through the clamping installation to seal structure 50, mounting structure is simple reliable, and the convenience is to seal structure 50's installation and change, improves the flexibility of using, reduces intensity of labour.

In some embodiments, a specific embodiment of the above-described sealing structure 50 may be configured as shown in fig. 1-3. Referring to fig. 1 to 3, the sealing structure 50 is a felt or rubber member. When the reverse installation is carried out, the sealing structure 50 is connected with the shell of the motor in a pressing mode to play a role of dustproof sealing, and the motor shaft penetrates through the central hole of the felt or the rubber ring to be matched with the friction disc 30. The felt or the rubber component can ensure stronger sealing performance, and has lower cost and lower use cost.

In some embodiments, a variation of the above-described seal structure 50 may be configured as shown in fig. 4-6. Referring to fig. 4 to 6, the sealing structure 50 includes a connecting portion 51 and a cover 52, wherein the connecting portion 51 is sleeved on an outer ring of the casing 11; the cover 52 covers the side of the housing 11 away from the clutch plate 40, and the cover 52 is provided with a central hole for the motor shaft to pass through. When reversely installed, the motor shaft passes through the central hole of the housing 52 and is matched with the friction disc 30, so that the motor shaft plays a role in dust sealing. The structure realizes dust prevention through direct matching with a motor shaft, and the housing 52 forms a dust-proof space, so that dust thrown away by rotation can be effectively blocked in work, and a sealed dust-proof effect is further achieved.

In some embodiments, an improved fit between the connecting portion 51 and the housing 11 may be as shown in fig. 4 to 6. Referring to fig. 4 to 6, the outer ring of the casing 11 is provided with an annular labyrinth ring 112, and the inner ring of the connecting portion 51 is provided with a labyrinth groove 511 which is rotatably fitted with the labyrinth ring 112. The sealing structure 50 of the structure is in running fit with the casing 11, after the sealing structure 50 is connected with a motor, the sealing structure 50 is fixed with a motor shaft and rotates along with the rotation of the motor shaft, and the dustproof effect is further optimized by arranging the labyrinth ring 112 and the labyrinth groove 511.

In some embodiments, a modified embodiment of the labyrinth grooves 511 and the labyrinth rings 112 may be configured as shown in fig. 4 to 6. Referring to fig. 4 to 6, a plurality of labyrinth rings 112 are provided at intervals in the axial direction of the casing 11, a plurality of labyrinth grooves 511 are provided at intervals in the axial direction of the connecting portion 51, and the plurality of labyrinth rings 112 correspond to the labyrinth grooves 511 one by one. In specific implementation, the sealing structure 50 is fixed to the motor shaft and rotates along with the rotation of the motor shaft, and by arranging the plurality of labyrinth grooves 511 and the plurality of labyrinth rings 112, the coaxiality of the sealing structure 50 and the housing 11 can be improved, the sealing protection effect can be optimized, and the protection grade and the protection performance can be improved.

It should be noted that in the embodiment where the sealing structure 50 is rotatably connected to the housing 11, the material of the sealing structure 50 may be set according to the material of the motor casing of the customer.

In some embodiments, a modified embodiment of the dust brake described above may be configured as shown in fig. 1-6. Referring to fig. 1-6, a bushing 60 is also included, the bushing 60 engaging the inner race of the friction disc 30. Optionally, the shaft sleeve 60 and the friction disc 30 may be in spline fit, and are packaged separately during transportation, and when the shaft sleeve 60 needs to be connected to a motor, the shaft sleeve 60 is installed inside the friction disc 30, so that the motor shaft sequentially passes through the sealing structure 50 and the central hole of the shaft sleeve 60, and a dustproof sealing effect is achieved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A dust-proof brake, comprising:

the clutch plate is positioned at the second shaft end of the main body, is connected with the movable plate and has the degree of freedom for driving the movable plate to be close to or far away from the friction disc; and

2. The dust-proof brake of claim 1, wherein an annular clamping groove is formed in a side surface of the housing, which faces away from the clutch plate, the clamping groove is located in the outer ring of the first mounting space, and the sealing structure is in clamping fit with the clamping groove.

3. A dust-proof brake as claimed in claim 2, characterized in that the sealing structure is a felt or rubber member.

4. The dust brake of claim 1, wherein the sealing structure comprises:

the connecting part is sleeved on the outer ring of the shell; and

5. A dust-proof brake as claimed in claim 4, characterized in that the outer ring of the housing is provided with an annular labyrinth ring, and the inner ring of the connecting part is provided with a labyrinth groove which is in rotating engagement with the labyrinth ring.

6. A dust-proof brake as claimed in claim 5, wherein a plurality of said labyrinth rings are provided at intervals in the axial direction of said casing, a plurality of said labyrinth grooves are provided at intervals in the axial direction of said connecting portion, and a plurality of said labyrinth rings correspond one-to-one to a plurality of said labyrinth grooves.

7. The dust brake of claim 1, further comprising a bushing, said bushing engaging an inner race of said friction disc.