CN216812597U - Brake with manual release structure - Google Patents

Abstract

The utility model provides a brake with a manual release structure, which comprises a magnetic yoke iron core, a movable plate, a friction disc, an armature, an elastic piece and a release assembly, wherein a first mounting space and a second mounting groove are sequentially and concentrically distributed on the magnetic yoke iron core from inside to outside; the movable plate is positioned in the first installation space; the friction disc is arranged in the first installation space; the armature is positioned at the second shaft end of the magnetic yoke iron core, and the armature is connected with the movable plate through a connecting piece; the elastic piece is arranged between the armature and the magnetic yoke iron core; the release assembly is arranged on one side, back to the armature, of the magnetic yoke iron core and is provided with an acting part enabling the movable plate to be far away from the friction disc. The brake with the manual release structure provided by the utility model can realize manual release by adding the release assembly, so that the manual debugging and maintenance process is facilitated, and the requirements of customers can be met.

Description

Brake with manual release structure

Technical Field

The utility model belongs to the technical field of brakes, and particularly relates to a brake with a manual release structure.

Background

The thin electromagnetic brake comprises a friction disc, an armature, an excitation coil, a shell, an elastic piece, a movable plate and the like, wherein when the excitation coil is not electrified, the brake is in a braking state, and when the excitation coil is electrified, the brake is in a releasing state. At present, a thin electromagnetic brake is mainly applied to occasions with narrow spaces such as a cooperative robot joint and the like, and has the advantages of small thickness, compact structure and small occupied space for installation.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a brake with a manual release structure, aiming at realizing the manual release of a thin brake so as to deal with the conditions of power failure, maintenance and the like.

In order to achieve the purpose, the utility model adopts the technical scheme that: provided is a brake with a manual release structure, including:

the magnetic yoke iron core is sequentially and concentrically distributed with a first installation space and a second installation groove from inside to outside, the first installation space penetrates through the center of the magnetic yoke iron core along the axial direction of the magnetic yoke iron core, and the opening of the second installation groove faces to the second shaft end of the magnetic yoke iron core and is used for installing an excitation coil;

a movable plate located in the first installation space and close to a first shaft end of the yoke core, the first shaft end being an opposite end of the second shaft end;

the friction disc is arranged in the first installation space and is positioned on one side, close to the second shaft end, of the movable plate;

the armature is positioned at the second shaft end of the magnetic yoke iron core, the armature is connected with the movable plate through a connecting piece, the connecting piece penetrates through the magnetic yoke iron core and is in sliding fit with the magnetic yoke iron core, and the armature can drive the movable plate to reciprocate along the axial direction of the magnetic yoke iron core;

the elastic piece is arranged between the armature and the magnetic yoke iron core and has a pretightening force for enabling the armature to be far away from the magnetic yoke iron core; and

and the release assembly is arranged on one side of the yoke iron core, which is back to the armature, and is provided with an action part which can enable the movable plate to be far away from the friction disc.

In one possible implementation manner, the release assembly is a threaded connector, the threaded connector penetrates through the yoke core and is in threaded connection with the armature, and a threaded portion of the threaded connector forms the acting portion;

rotating the threaded connection may move the armature closer to the yoke core such that the armature drives the movable plate away from the friction disc.

In some embodiments, the threaded connection members are provided in plurality, and the plurality of threaded connection members are evenly distributed around the axis of the yoke core.

In one possible implementation, the release assembly is a first handle, the first handle comprising;

a first half portion of a plate-like member extending along an arcuate path, the first half portion forming the active portion; and

the second half part is a long strip-shaped plate-shaped component, one end of the second half part is fixedly connected to the middle of the periphery of the first half part, and the other end of the second half part extends along the direction departing from the axis of the magnetic yoke iron core;

pressing the second half causes the first half to move the movable plate away from the friction plate.

In some embodiments, the free end of the second half is inclined toward a side of the yoke core away from the armature.

In some embodiments, the first half part is a semi-annular plate-shaped member, first bolts are respectively fitted to the head end and the tail end of the first half part, and a connection line of the two first bolts coincides with a radial direction of the yoke core.

In some embodiments, the first bolt penetrates through the first half part and the yoke iron core in sequence and is in threaded fit with the armature; or, the first bolt penetrates through the first half part and is in threaded fit with the movable plate.

In a possible implementation manner, the release assembly is a second handle, the second handle is a Y-shaped member to form two first installation parts and one second installation part, the two first installation parts are attached to a side surface, back to the armature, of the yoke iron core, first bolts are matched on the first installation parts, and the first bolts sequentially penetrate through the first installation parts and the yoke iron core and are in threaded fit with the armature;

the second mounting parts and the magnetic yoke iron core are distributed at intervals, adjusting screws are matched on the second mounting parts, the adjusting screws sequentially penetrate through the second mounting parts and the magnetic yoke iron core and are in threaded fit with the armature, and the two first mounting parts and the adjusting screws form the action part;

screwing adjusting screw can make armature orientation the yoke iron core removes, just adjusting screw pushes down the second installation department to drive two lift on the first installation department, first installation department drives armature orientation the yoke iron core removes, armature drives the fly leaf is kept away from the friction disc.

In some embodiments, two of the first mounting portions and one of the second mounting portions are evenly distributed around an axis of the yoke core.

In some embodiments, the brake with manual release structure further comprises:

the mounting screw penetrates through the magnetic yoke iron core and the armature in sequence and is used for being connected with a motor;

the armature is provided with a mounting column, the mounting column protrudes out of one side face of the armature back to the magnetic yoke iron core, and the mounting column is provided with a through hole for the mounting screw to penetrate through.

In the embodiment of the application, compared with the prior art, the brake with the manual release structure can realize manual release by adding the release assembly, and a user can release the brake manually, so that equipment can be used more flexibly, the manual debugging and overhauling process is facilitated, and the requirements of customers can be met.

Drawings

Fig. 1 is a schematic front view of a brake with a manual release mechanism according to an embodiment of the present invention;

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

FIG. 3 is a schematic cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is a schematic front view of a brake with a manual release mechanism according to a second embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a brake with a manual release mechanism according to a second embodiment of the present invention;

FIG. 6 is a schematic front view of a brake with a manual release mechanism according to a third embodiment of the present invention;

fig. 7 is a schematic cross-sectional view of a brake with a manual release structure according to a third embodiment of the present invention.

Description of reference numerals:

10-a yoke core; 11-a field coil;

20-a movable plate;

30-a friction disk;

40-an armature; 41-mounting posts;

50-an elastic member;

60-a release assembly; 61-a threaded connection; 62-an action part; 63-a first handle; 631-a first half; 632-a second half; 64-a first bolt; 65-a second handle; 651 — first mount; 652-second mount; 66-adjusting screws; 67-a second bolt;

70-mounting screws.

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 7 together, the brake with the manual release structure according to the present invention will now be described. The brake with the manual release structure comprises a magnetic yoke iron core 10, a movable plate 20, a friction disc 30, an armature 40, an elastic piece 50 and a release assembly 60, wherein a first installation space and a second installation groove are sequentially and concentrically distributed on the magnetic yoke iron core 10 from inside to outside, the first installation space penetrates through the center of the magnetic yoke iron core 10 along the axial direction of the magnetic yoke iron core 10, and the opening of the second installation groove faces to the second shaft end of the magnetic yoke iron core 10 and is used for installing an excitation coil 11; the movable plate 20 is located in the first installation space and is close to a first shaft end of the yoke core 10, which is an opposite end of the second shaft end; the friction disc 30 is arranged in the first mounting space and is positioned on one side of the movable plate 20 close to the second shaft end; the armature 40 is located at the second shaft end of the yoke core 10, the armature 40 is connected with the movable plate 20 through a connecting piece, the connecting piece penetrates through the yoke core 10 and is in sliding fit with the yoke core 10, and the armature 40 can drive the movable plate 20 to reciprocate along the axial direction of the yoke core 10; the elastic piece 50 is arranged between the armature 40 and the yoke iron core 10, and the elastic piece 50 has a pretightening force for enabling the armature 40 to be far away from the yoke iron core 10; the release assembly 60 is provided on a side of the yoke core 10 facing away from the armature 40, and has an acting portion 62 that moves the movable plate 20 away from the friction plate 30.

In the brake with the manual release structure provided by the embodiment, when the brake works normally, the excitation coil 11 in the brake is electrified, a magnetic field is generated at the periphery of the excitation coil 11, a magnetic force is generated in an air gap between the yoke iron core 10 and the armature 40, so that the armature 40 is attracted to move close to the yoke iron core 10, the armature 40 is close to the yoke iron core 10 and extrudes the elastic member 50, the armature 40 is connected with the movable plate 20 to drive the movable plate 20 to move back to the friction disc 30, so that the friction disc 30 is spaced from the friction disc 30, and the friction disc 30 rotates normally along with a motor shaft; when the excitation coil 11 is de-energized, the magnetic field disappears, that is, the magnetic force in the air gap between the yoke core 10 and the armature 40 disappears, the elastic member 50 rebounds to push the armature 40 to be away from the yoke core 10, the armature 40 is connected with the movable plate 20 to drive the movable plate 20 to move close to the friction disc 30, and then to contact with the friction disc 30, and braking is realized through friction resistance; when power is cut off or maintenance is performed, the brake needs to be manually released to release for debugging, maintenance and the like, and the action part 62 on the release assembly 60 can realize the separation of the movable plate 20 from the friction disc 30, so that manual release is completed.

Compared with the prior art, the brake with the manual release structure can realize manual release by adding the release assembly 60, and a user can release the brake manually, so that the device can be used more flexibly, the manual debugging and maintenance process is facilitated, and the requirements of customers can be met.

In some embodiments, a specific embodiment of the release assembly 60 described above may be configured as shown in fig. 1-3. Referring to fig. 1 to 3, the release member 60 is a screw connector 61, the screw connector 61 penetrates through the yoke core 10 and is screwed with the armature 40, and a screw portion of the screw connector 61 forms an acting portion; rotating the threaded connection 61 moves the armature 40 closer to the yoke core 10 so that the armature 40 drives the movable plate 20 away from the friction plate 30. When the manual release is needed, the threaded connecting piece 61 can be screwed, and in the process of screwing the threaded connecting piece 61, the armature 40 is matched with the threaded connecting piece 61, so that the armature 40 is moved close to the yoke iron core 10 against the elastic force of the elastic piece 50, the armature 40 drives the movable plate 20 to be far away from the friction plate 30, and the braking state is released.

In some embodiments, a modified embodiment of the threaded connector 61 described above may be configured as shown in fig. 1-3. Referring to fig. 1 to 3, the screw connection member 61 is provided in plurality, and the plurality of screw connection members 61 are uniformly distributed around the axis of the yoke core 10. For example, in the structure shown in fig. 1, three threaded connectors 61 are provided, every two adjacent threaded connectors 61 are spaced by 120 degrees, when manual release is required, the three threaded connectors 61 are simultaneously screwed, the three threaded connectors 61 drive the armature 40 to move, the moving distances of all positions of the armature 40 are ensured to be equal, the precision of the manual release is improved, and the overall stress of the brake is balanced.

In some embodiments, a modified embodiment of the release assembly 60 described above may be configured as shown in fig. 4-5. Referring to fig. 4-5, the release assembly 60 is a first handle 63, the first handle 63 including a first half 631 and a second half 632, the first half 631 being a plate-like member extending along an arcuate path, the first half 631 forming an active portion; the second half portion 632 is a long plate-shaped member, one end of the second half portion 632 is fixedly disposed in the middle of the outer periphery of the first half portion 631, and the other end extends in a direction departing from the axis of the yoke core 10; depressing the second half 632 causes the first half 631 to move the movable plate 20 away from the friction plates 30. Through the free end of pushing down the second half portion 632, according to the lever principle, can play the effect of lifting up to first half portion 631, and then make first half portion 631 drive movable plate 20 and keep away from friction disk 30, remove the braking, the release process is convenient and fast more.

In some embodiments, a specific embodiment of the first half 631 may be configured as shown in fig. 4 to 5. Referring to fig. 4 to 5, the free end of the second half 632 is inclined toward the side of the yoke core 10 away from the armature 40. That is, the plate surface of the second half portion 632 and the plate surface of the first half portion 631 form an obtuse angle, and due to the inclined arrangement of the second half portion 632, the second half portion 632 can be pressed down by a small distance, so that a large upward lifting effect on the first half portion 631 can be realized, and further, the operation is more labor-saving.

In some embodiments, a specific implementation of the first half 631 described above may be configured as shown in FIG. 4. Referring to fig. 4, the inner diameter of the first half 631 is greater than the inner diameter of the movable plate 20 and is smaller than the outer diameter of the movable plate 20. This embodiment allows the depth of motor shaft sleeve extension into the brake to be no longer constrained by the handle, avoiding interference of the shaft sleeve with the first handle half 631.

In some embodiments, a specific embodiment of the first bolt 64 may be configured as shown in fig. 4-5. Referring to fig. 4 to 5, a first bolt 64 penetrates the first half 631 and the yoke core 10 in sequence, and is screw-engaged with the armature 40; alternatively, the first bolt 64 is threadedly engaged with the movable plate 20 through the first half 631. When the first bolt 64 penetrates through the first half portion 631 and the yoke core 10 in sequence and is in threaded fit with the armature 40, the first half portion 631 can be pulled by pressing the free end of the second half portion 632, the first half portion 631 drives the armature 40 to overcome the elastic force of the elastic member 50, and then the armature 40 drives the movable plate 20 to be far away from the friction plate 30, so that braking is released; when the first bolt 64 penetrates the first half portion 631 and is threadedly engaged with the movable plate 20, the first half portion 631 is pulled by pressing the free end of the second half portion 632, and the first half portion 631 directly drives the movable plate 20 away from the friction plate 30 to release the brake.

In some embodiments, a modified implementation of the first half 631 described above may be configured as shown in fig. 4-5. Referring to fig. 4 to 5, the first half portion 631 is a semi-annular plate-shaped member, first bolts 64 are respectively fitted to the head and the tail ends of the first half portion 631, and a connection line of the two first bolts 64 coincides with a radial direction of the yoke core 10. That is, the line of the two ends of the first half portion 631 coincides with the radial direction of the magnetic yoke iron core 10, and when the first half portion 631 drives the armature 40 to move, the acting points acting on the armature 40 are uniformly distributed, so that the moving distances of all the positions of the armature 40 are equal, the precision of manual release is improved, and the overall stress of the brake is balanced.

In some embodiments, a modified embodiment of the release assembly 60 described above may be configured as shown in fig. 6-7. Referring to fig. 6 to 7, the release assembly 60 is a second handle 65, the second handle 65 is a Y-shaped member to form two first mounting portions 651 and one second mounting portion 652, the two first mounting portions 651 are attached to a side surface of the yoke core 10 facing away from the armature 40, the first mounting portions 651 are fitted with second bolts 67, and the second bolts 67 sequentially penetrate through the first mounting portions 651 and the yoke core 10 and are in threaded engagement with the armature 40; the second mounting parts 652 are distributed at intervals with the yoke iron core 10, adjusting screws 66 are matched on the second mounting parts 652, the adjusting screws 66 sequentially penetrate through the second mounting parts 652 and the yoke iron core 10 and are in threaded fit with the armature 40, and the two first mounting parts 651 and the adjusting screws 66 form an acting part; turning the adjusting screw 66 moves the armature 40 toward the yoke core 10, and the adjusting screw 66 presses down the second mounting portion 652 to lift the two first mounting portions 651, the first mounting portions 651 drive the armature 40 to move toward the yoke core 10, and the armature 40 drives the movable plate 20 away from the friction plate 30.

When manual release is needed, the adjusting screw 66 is screwed, the adjusting screw 66 is in threaded fit with the armature 40, and then the armature 40 is driven to move close to the magnetic yoke iron core 10, in the process of screwing the adjusting screw 66, the head of the adjusting screw 66 continuously extrudes the second mounting portion 652, so that the second mounting portion 652 is pressed downwards, and then the second mounting portion 652 drives the first mounting portion 651 to lift upwards, the first mounting portion 651 is connected with the armature 40, therefore, the first mounting portion 651 drives the armature 40 to move close to the magnetic yoke iron core 10, and then the armature 40 drives the movable plate 20 to be far away from the friction disc 30. Compared with the structure shown in fig. 4, the structure can keep the brake releasing state after being released, and does not need additional manpower to maintain; the whole body is positioned in the circumferential range of the yoke iron core 10, and the occupation space of the second half part 632 of the figure 4 extending out of the periphery of the yoke iron core 10 is also avoided, thereby saving the space.

It should be noted that the two first mounting portions 651 and the second mounting portion 652 need to have mounting surfaces parallel to the axial end surfaces of the yoke core 10, so as to facilitate the mounting of the second bolt 67 and the adjusting screw 66; the height difference between the two first installation parts 651 and the second installation part 652 adopts natural arc transition, and therefore the lifting of the two first installation parts 651 is achieved by screwing the adjusting screw 66.

In some embodiments, a modified embodiment of the second handle 65 described above may be configured as shown in FIG. 6. Referring to fig. 6, two first mounting portions 651 and second mounting portions 652 are uniformly distributed around the axis of the yoke core 10. The two first mounting portions 651 and the second mounting portions 652 are uniformly distributed, so that the two second bolts 67 and the adjusting screws 66 can be uniformly arranged around the axis of the yoke iron core 10 at intervals of 120 degrees, the integral stress balance of the brake is facilitated, the integral rigidity of the brake is improved, and the deformation of thin parts such as the manually released yoke iron core 10 and the armature 40 is reduced.

In some embodiments, a modified embodiment of the brake with manual release structure described above may be configured as shown in fig. 1 to 7. Referring to fig. 1 to 7, the brake with the manual release structure further includes a mounting screw 70, and the mounting screw 70 sequentially penetrates through the yoke core 10 and the armature 40 for connection with the motor; the armature 40 is provided with a mounting post 41, the mounting post 41 protrudes from a side surface of the armature 40 opposite to the yoke core 10, and the mounting post 41 is provided with a through hole for the mounting screw 70 to pass through. When the mounting screws 70 are provided with a plurality of mounting posts 41 and the mounting screws 70 are arranged in a one-to-one correspondence manner, the mounting screws 70 penetrate through holes in the mounting posts 41 to be connected with the motor, so that the mounting of the brake on the motor is realized, and the mounting posts 41 are used for ensuring that the clearance between the armature 40 and the yoke iron core 10 is not affected when the brake is mounted (the corresponding mounting form is that the armature 40 side is mounted towards the motor) and fixed, so that the brake can normally work.

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 (10)

1. A brake with a manual release mechanism, comprising:

the magnetic yoke iron core is sequentially and concentrically distributed with a first installation space and a second installation groove from inside to outside, the first installation space penetrates through the center of the magnetic yoke iron core along the axial direction of the magnetic yoke iron core, and the opening of the second installation groove faces to the second shaft end of the magnetic yoke iron core and is used for installing an excitation coil;

a movable plate located in the first installation space and close to a first shaft end of the yoke core, the first shaft end being an opposite end of the second shaft end;

the friction disc is arranged in the first installation space and is positioned on one side, close to the second shaft end, of the movable plate;

the armature is positioned at the second shaft end of the magnetic yoke iron core, the armature is connected with the movable plate through a connecting piece, the connecting piece penetrates through the magnetic yoke iron core and is in sliding fit with the magnetic yoke iron core, and the armature can drive the movable plate to reciprocate along the axial direction of the magnetic yoke iron core;

the elastic piece is arranged between the armature and the magnetic yoke iron core and has a pretightening force for enabling the armature to be far away from the magnetic yoke iron core; and

the releasing assembly is arranged on one side, back to the armature, of the magnetic yoke iron core and is provided with an acting part capable of enabling the movable plate to be far away from the friction disc.

2. The brake with the manual release structure according to claim 1, wherein the release member is a screw thread connector that is screwed with the armature through the yoke core, and a screw thread portion of the screw thread connector forms the acting portion;

rotating the threaded connection may move the armature closer to the yoke core such that the armature drives the movable plate away from the friction disc.

3. A brake with a manual release structure according to claim 2, wherein said screw thread connecting pieces are provided in plurality, and a plurality of said screw thread connecting pieces are evenly distributed around the axis of said yoke core.

4. A brake with a manual release arrangement according to claim 1, wherein said release member is a first handle, said first handle including;

a first half portion of a plate-like member extending along an arcuate path, the first half portion forming the active portion; and

the second half part is a long strip-shaped plate-shaped component, one end of the second half part is fixedly connected to the middle of the periphery of the first half part, and the other end of the second half part extends along the direction departing from the axis of the magnetic yoke iron core;

pressing the second half causes the first half to move the movable plate away from the friction disc.

5. A brake with a manual release arrangement according to claim 4, wherein the free end of the second half is inclined towards the side of the yoke core remote from the armature.

6. The brake with the manual release structure according to claim 4, wherein the first half portion is a semi-annular plate-shaped member, first bolts are respectively fitted to the head and the tail ends of the first half portion, and a connection line of the two first bolts coincides with a radial direction of the yoke core.

7. The brake with manual release of claim 6, wherein said first bolt extends through said first half and said yoke core in sequence and is threadedly engaged with said armature; or, the first bolt penetrates through the first half part and is in threaded fit with the movable plate.

8. The brake with the manual release structure according to claim 1, wherein the release assembly is a second handle, the second handle is a Y-shaped member to form two first mounting portions and a second mounting portion, the two first mounting portions are attached to a side surface of the yoke core facing away from the armature, a second bolt is fitted on the first mounting portions, and the second bolt penetrates through the first mounting portions and the yoke core in sequence and is in threaded fit with the armature;

the second mounting parts and the magnetic yoke iron core are distributed at intervals, adjusting screws are matched on the second mounting parts, the adjusting screws sequentially penetrate through the second mounting parts and the magnetic yoke iron core and are in threaded fit with the armature, and the two first mounting parts and the adjusting screws form the action part;

screwing adjusting screw can make armature orientation the yoke iron core removes, just adjusting screw pushes down the second installation department to drive two lift on the first installation department, first installation department drives armature orientation the yoke iron core removes, armature drives the fly leaf is kept away from the friction disc.

9. A brake with manual release mechanism according to claim 8, wherein two of said first mounting portions and one of said second mounting portions are evenly distributed around the axis of said yoke core.

10. The brake with manual release of claim 1, further comprising:

the mounting screw penetrates through the magnetic yoke iron core and the armature in sequence and is used for being connected with a motor;

the armature is provided with a mounting column, the mounting column protrudes out of one side face of the armature back to the magnetic yoke iron core, and the mounting column is provided with a through hole for the mounting screw to penetrate through.

Images