CN210469021U - Brake structure of tubular motor - Google Patents
Brake structure of tubular motor Download PDFInfo
- Publication number
- CN210469021U CN210469021U CN201921271846.3U CN201921271846U CN210469021U CN 210469021 U CN210469021 U CN 210469021U CN 201921271846 U CN201921271846 U CN 201921271846U CN 210469021 U CN210469021 U CN 210469021U
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- brake
- tubular motor
- piece
- shell
- speed reducing
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Abstract
The utility model discloses a tubular motor's brake structure, including actuating mechanism, one-level reduction gears and the brake subassembly that connects gradually, the brake subassembly includes shell and the driving piece, brake spare and the steel ball of installing in the shell, and actuating mechanism, one-level reduction gears and driving piece link in proper order, and the brake spare links with tubular motor's external part, and the steel ball setting is between driving piece and brake spare. The driving piece and the brake piece are respectively provided with a circular ring boss and a brake boss, the circular ring boss is provided with an opening, a blocking rib is arranged on the inner side of the circular ring boss, a limiting groove is formed in the brake boss corresponding to the blocking rib, a brake end face is arranged between the adjacent limiting grooves, and the steel balls are arranged at the opening and in clearance fit with the brake end face. The utility model discloses a driving piece and brake spare rotate relatively, change the relative angle of opening and brake terminal surface to the clearance size that changes the steel ball realizes brake assembly unblock and locking, and when actuating mechanism outage stall, brake assembly can keep current state, makes actuating mechanism not influenced by external force.
Description
Technical Field
The utility model relates to the field of motors, especially indicate a brake structure of tubular motor.
Background
The tubular motor consists of a stroke part, a motor part and a speed reduction part, and the three parts are arranged in the circular tube to work, so that the tubular motor is named; the stroke part controls the upper limit and the lower limit of the motor, the motor part is responsible for the operation of the motor, and the speed reduction part mainly adopts planetary speed reduction to reduce the rotating speed of the motor and increase the output torque.
Tubular motors are used in electric roller shutters, curtains and the like. The motor is hidden in the rolling tube, and the transmission shaft is driven to rotate through the rotation of the motor, so that the lifting of the rolling curtain sheet and the rolling curtain is realized. Due to the size and limited installation position (mostly installed in a round pipe) of the tubular motor, the power of the motor part is low and the load is limited. The application scene of the tubular motor has higher requirements on the load, and particularly under the condition that the tubular motor is powered off and stops rotating in the working process, the tubular motor is required to be in a power-off state, so that the motor transmission shaft is prevented from rotating under the influence of external gravity (the gravity of a roller shutter sheet and a curtain), and otherwise the motor part of the tubular motor is easily damaged.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a tubular motor's brake structure can realize tubular motor's brake function, makes actuating mechanism keep off operating condition and does not receive external force to influence.
In order to achieve the above purpose, the solution of the present invention is:
a brake structure of a tubular motor comprises a driving mechanism, a primary speed reducing mechanism and a brake assembly which are sequentially connected; the brake assembly comprises a shell, a driving piece, a brake piece and steel balls; the shell is provided with an accommodating cavity, the driving piece and the braking piece are connected with each other and matched in the accommodating cavity, and the steel balls are matched between the driving piece and the braking piece; the driving mechanism is linked with a transmission shaft of the primary speed reducing mechanism, and the transmission shaft of the primary speed reducing mechanism penetrates through one end of the shell and is linked with one end of the driving piece; the other end of the driving piece protrudes to form a circular boss, the circumference of the circular boss is provided with at least two openings, the circular boss is divided into at least two sections, and the inner side of each section of the circular boss is provided with a retaining rib; a brake boss is formed at one end of the brake piece corresponding to the position of the circular boss, and the brake boss is matched in the ring of the circular boss; a limiting groove is formed in the periphery of the brake boss corresponding to the position of the blocking rib, and the blocking rib is movably matched between two ends of the limiting groove along with the relative rotation of the driving piece and the brake piece; a brake end face is arranged between the end parts of the two adjacent limiting grooves, a steel ball is arranged at each opening, and the steel balls are in clearance fit with the brake end face and the side wall of the accommodating cavity; the other end of the brake piece is linked with the external part of the tubular motor.
The openings are arranged at the other end of the driving piece in a surrounding manner at equal intervals by taking the circle center of the circular boss as the center; the blocking ribs are positioned in the middle of the inner side of each section of circular boss.
The number of the openings is three.
Is characterized in that: the brake assembly further comprises a fixing ring, the periphery of the fixing ring is in limited fit with the side wall of the accommodating cavity, the circular boss penetrates through the fixing ring, and the steel ball is in clearance fit with the inner ring of the fixing ring.
The periphery of the fixing ring is provided with a plurality of limiting teeth, the side wall of the containing cavity is correspondingly provided with a circle of tooth-shaped end face, and the limiting teeth are meshed in the tooth-shaped end face.
A first through hole communicated with the accommodating cavity is formed at one end of the shell, a positioning step is formed at one end of the driving piece corresponding to the first through hole, and the positioning step is in pin joint fit with the first through hole; and a matching hole matched with the transmission shaft of the first-stage speed reducing mechanism is formed in the positioning step, and the transmission shaft of the first-stage speed reducing mechanism is matched in the matching hole in an inserting manner.
The utility model discloses still include second grade reduction gears, the other end of shell is formed with the second through-hole in intercommunication holding chamber, the other end of brake spare is formed with the cooperation gear, the cooperation gear wear to locate the second through-hole and with second grade reduction gears's transmission shaft linkage.
The shell comprises a shell body and a cover body; the accommodating cavity and the first through hole are arranged in the shell, and the second through hole is arranged in the cover body; the end part of the cover body is buckled and matched with the end part of the cover body.
One end of the cover body is provided with a buckle, a clamping hook groove is formed in the position, corresponding to the buckle, of one end of the shell, and the buckle is matched in the clamping hook groove in a fastening mode.
One end of the cover body is provided with a positioning rib, one end of the shell is provided with a positioning groove, and the positioning rib is movably matched in the positioning groove.
The other end of the shell is provided with a matching tooth groove which is in limit matching with the primary speed reducing mechanism.
The other end of the cover body is provided with external teeth, and the external teeth are in limit fit with the secondary speed reducing mechanism.
The brake assembly further comprises a pin shaft, and the pin shaft sequentially penetrates through the first-stage speed reducing mechanism, the brake piece and the second-stage speed reducing mechanism along the axial direction of the brake assembly.
After the structure of the oil-gas separator is adopted, the utility model discloses set up brake assembly between the external portion of tubular motor and one-level reduction gears, driving piece and the relative rotation of brake piece under different states through brake assembly change the relative angle of opening and brake terminal surface, change the clearance size of steel ball promptly, and then realize brake assembly's unblock and locking state, when actuating mechanism outage stall, brake assembly can keep the state of the external portion of tubular motor to make actuating mechanism keep off operating condition not influenced by external force.
In addition, when the brake assembly of the utility model is operated, the friction mode of the steel ball and the movable gap thereof is rolling friction, the wear is smaller, and the service life is longer; and simple structure, simple to operate compare in the mode of electro-magnet actuation brake block, manufacturing cost is lower.
Drawings
FIG. 1 is a perspective view of an embodiment of the present invention;
FIG. 2 is an exploded view of an embodiment of the present invention;
FIG. 3 is a cross-sectional view of an embodiment of the present invention;
FIG. 4 is an exploded view of the brake assembly of the present invention;
fig. 5 is a top perspective view of the brake assembly housing of the present invention;
fig. 6 is a bottom perspective view of the brake assembly housing of the present invention;
fig. 7 is a top perspective view of the brake assembly cover of the present invention;
fig. 8 is a bottom perspective view of the cover of the brake assembly of the present invention;
FIG. 9 is a top perspective view of the brake assembly driving member of the present invention;
FIG. 10 is a bottom perspective view of the brake assembly driving member of the present invention;
FIG. 11 is a top perspective view of the brake element of the brake assembly of the present invention;
fig. 12 is a bottom perspective view of the brake component of the brake assembly of the present invention;
fig. 13 is a schematic longitudinal sectional view of the brake assembly of the present invention;
FIG. 14 is a schematic cross-sectional view of the brake assembly of the present invention;
fig. 15 is a schematic view of an unlocking state of the brake assembly of the present invention;
fig. 16 is a schematic view of a locking state of the brake assembly of the present invention.
The reference numbers illustrate: a drive mechanism 1; a primary speed reduction mechanism 2; a brake assembly 3; a housing 31; a housing 31A; a lid body 31B; an accommodating chamber 311; a tooth-shaped end surface 312; a first through hole 313; a second through-hole 314; a buckle 315; a hook groove 316; positioning ribs 317; a positioning groove 318; mating gullet 319; outer teeth 310; a drive member 32; an annular boss 321; an opening 322; a barrier rib 323; a positioning step 324; a mating hole 325; a brake member 33; a brake boss 331; a limiting groove 332; a braking end surface 333; steel balls 34; a fixing ring 35; a limit tooth 351; an inner ring 352; a pin shaft 36; and a secondary speed reducing mechanism 4.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.
Referring to fig. 1 to 14, the present invention relates to a brake structure of a tubular motor, which includes a driving mechanism 1 (a motor portion of the tubular motor), a first-level speed reducing mechanism 2 and a brake assembly 3 connected in sequence.
The brake assembly 3 includes a housing 31, an actuating member 32, a brake member 33 and steel balls 34. The housing 31 is formed with a receiving cavity 311, the driving member 32 and the braking member 33 are coupled to each other and fitted in the receiving cavity 311, and the steel balls 34 are fitted between the driving member 32 and the braking member 33. The driving mechanism 1 is linked with the transmission shaft of the first-stage speed reducing mechanism 2, and the transmission shaft of the first-stage speed reducing mechanism 2 is inserted into one end of the housing 31 and linked with one end of the driving member 32. The other end of the driving member 32 protrudes to form a circular boss 321, the circular boss 321 is concentric with the other end of the driving member 32, at least two openings 322 are formed on the circumference of the circular boss 321, the circular boss 321 is divided into at least two sections, and a blocking rib 323 is arranged on the inner side of each section of the circular boss 321.
A braking boss 331 is formed at one end of the braking member 33 corresponding to the circular boss 321, and the braking boss 331 is fitted in the ring of the circular boss 321. A limiting groove 332 is formed on the outer circumference of the braking boss 331 corresponding to the position of the blocking rib 323, and the blocking rib 323 is movably fitted between two ends of the limiting groove 332 along with the relative rotation of the driving member 32 and the braking member 33. A braking end surface 333 is arranged between the end parts of the two adjacent limiting grooves 332, a steel ball 34 is arranged at each position of the opening 322, and the steel balls 34 are in clearance fit with the braking end surfaces 333 and the side walls of the accommodating cavity 311. The other end of the brake member 33 is interlocked with an external portion of the tubular motor.
The openings 322 are arranged at the other end of the driving member 32 in an equidistant manner around the center of the circular boss 321, and the circular boss 321 is divided into multiple sections by the openings 322; the blocking rib 323 is located in the middle of the inner side of each section of the circular boss 321. The circular boss 321, the brake boss 331 and the corresponding structures are designed symmetrically, so that the requirement of the driving mechanism 1 for positive and negative rotation can be met. In this embodiment, the number of the openings 322 is three, which is a preferred embodiment.
The brake component 3 further comprises a fixing ring 35, the periphery of the fixing ring 35 is in limited fit with the side wall of the accommodating cavity 311, a circular boss 321 penetrates through the fixing ring 35, and the steel ball 34 is in clearance fit with an inner ring 352 of the fixing ring 35. The fixing ring 35 can limit the installation positions of the driving piece 32 and the braking piece 33, so that the driving piece and the braking piece do not deviate in the axial direction of the shell 31 when rotating, and the working stability of the driving piece and the braking piece is improved. The periphery of the fixing ring 35 is provided with a plurality of limiting teeth 351, the side wall of the accommodating cavity 311 is correspondingly provided with a circle of tooth-shaped end surface 312, and the limiting teeth 351 are meshed in the tooth-shaped end surface 312 to realize the limiting matching of the periphery of the fixing ring 35 and the side wall of the accommodating cavity 311. By arranging the fixing ring 35, the abrasion between the steel balls 34 and the side wall of the accommodating cavity 11 can be avoided, so that the fixing ring 35 can be directly replaced after the loss caused by long-term use of the utility model, and the maintenance cost is reduced; meanwhile, the fixing ring 35 can be made of a material with better wear resistance, and is independent of the shell 31 in production, so that the production cost is reduced.
The brake component 3 further comprises a pin shaft 36, and the pin shaft 36 sequentially penetrates through the first-stage speed reducing mechanism 2, the brake piece 33 and the second-stage speed reducing mechanism 4 along the axial direction of the brake component 3 so as to realize coaxial rotation of the first-stage speed reducing mechanism, the brake piece 33 and the second-stage speed reducing mechanism. Above-mentioned round pin axle 36 will the utility model discloses a each rotates the part and concatenates to guarantee the axiality requirement, can avoid each part to rotate the in-process beat and produce the noise, thereby reach the function of making an uproar.
A first through hole 313 communicated with the accommodating cavity 311 is formed at one end of the housing 31, a positioning step 324 is formed at one end of the driving member 32 corresponding to the first through hole 313, and the positioning step 324 is pivotally engaged in the first through hole 313, so that the working stability of the driving member 32 can be improved, and the positioning and installation are facilitated; the positioning step 324 is formed with a fitting hole 325 matching with the transmission shaft of the first-stage reduction gear 2, and the transmission shaft of the first-stage reduction gear 2 is inserted into the fitting hole 325 to realize linkage of the transmission shaft of the first-stage reduction gear 2 and the driving member 32.
The utility model discloses still include second grade reduction gears 4, the other end of above-mentioned shell 31 is formed with the second through-hole 314 that communicates holding chamber 311, and the other end of above-mentioned brake piece 33 is formed with cooperation gear 334, cooperation gear 334 wear to locate second through-hole 314 and with the 4 linkages of transmission shaft of second grade reduction gears. The secondary speed reducing mechanism 4 serves as an external part of the tubular motor.
The housing 31 includes a case 31A and a cover 31B, the accommodating cavity 311 and the first through hole 313 are disposed in the case 31A, and the second through hole 314 is disposed in the cover 31B. The end of the cover 31B is snap-fitted to the end of the cover 31B; a buckle 315 is disposed at one end of the cover 31B, a buckle groove 316 is disposed at a position corresponding to the buckle 315 at one end of the housing 31A, and the buckle 315 is buckled and engaged in the buckle groove 316 to realize the buckling and engagement between the cover 31B and the housing 31A. Positioning ribs 317 are formed at one end of the cover body 31B, positioning grooves 318 are formed at one end of the shell 31A, and the positioning ribs 317 are movably matched in the positioning grooves 318, so that the limit matching of the cover body 31B and the shell 31A is realized, and the installation rapidity is improved.
The other end of the housing 31A is provided with a fitting tooth groove 319, and the fitting tooth groove 319 is in limit fitting with the primary speed reduction mechanism 2, so that the housing 31A is connected with the primary speed reduction mechanism 2. The other end of the cover 31B is provided with external teeth 310, and the external teeth 310 are in limit fit with the secondary speed reducing mechanism 4, so that the connection between the cover 31B and the secondary speed reducing mechanism 4 is realized.
When the tubular motor is in the energized operating condition, the brake assembly 3 is in the unlocked condition as shown in fig. 15: the driving mechanism 1 drives the transmission shaft of the first-stage speed reducing mechanism 2 to rotate, so as to drive the driving member 32 to rotate (forward rotation or reverse rotation), the blocking rib 323 of the driving member 32 moves in the limit groove 332 and abuts against the end part of the limit groove 332, so as to push the brake member 33 to rotate, the side wall of the opening 322 pushes the steel ball 34 to move, so that the gap between the brake end surface 333 and the inner ring 352 is kept in a state that the steel ball 34 cannot be blocked, the brake member 33 keeps continuously rotating, and then the second-stage speed reducing mechanism 4 is driven to keep outputting.
When the tubular motor is in the power-off and stall state, the brake assembly 3 is in the locked state as shown in fig. 16: when the drive mechanism 1 stops operating, the primary speed reduction mechanism 2 and the drive member 32 stop rotating. At this time, the external part of the tubular motor drives the two-stage speed reduction mechanism 4 and the braking member 33 to rotate (rotate forward or reversely) under the action of external gravity (gravity of the roller shutter sheet and the curtain), so that the position angle of the braking end surface 333 is changed, the gap space between the braking end surface 333 and the inner ring 352 is narrowed, the steel balls 34 in the gap are clamped, even if the braking member 33 and the fixing ring 35 are kept relatively fixed, the external gravity cannot be transmitted to the driving member 32, the braking effect is realized, and the tube driving mechanism 1 is kept in an idle state without being influenced.
Through the structure, the utility model discloses set up brake assembly 3 between the external portion of tubular motor and one-level reduction gears 2, driving piece 32 and the relative rotation of brake piece 33 under different states through brake assembly 3, change the relative angle of opening 322 and brake terminal surface 333, change the clearance size of steel ball 34 promptly, and then realize the unblock and the locking state of brake assembly 3, when actuating mechanism 1 outage stall, brake assembly 3 can keep the state of the external portion of tubular motor, and make actuating mechanism 1 keep off working state not influenced by external force.
In addition, when the brake component 3 of the utility model operates, the friction mode of the steel ball 34 and the movable gap is rolling friction, the wear is smaller, and the service life is longer; and simple structure, simple to operate compare in the mode of electro-magnet actuation brake block, manufacturing cost is lower.
The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.
Claims (13)
1. The utility model provides a brake structure of tubular motor which characterized in that: comprises a driving mechanism, a primary speed reducing mechanism and a brake component which are connected in sequence; the brake assembly comprises a shell, a driving piece, a brake piece and steel balls; the shell is provided with an accommodating cavity, the driving piece and the braking piece are connected with each other and matched in the accommodating cavity, and the steel balls are matched between the driving piece and the braking piece; the driving mechanism is linked with a transmission shaft of the primary speed reducing mechanism, and the transmission shaft of the primary speed reducing mechanism penetrates through one end of the shell and is linked with one end of the driving piece; the other end of the driving piece protrudes to form a circular boss, the circumference of the circular boss is provided with at least two openings, the circular boss is divided into at least two sections, and the inner side of each section of the circular boss is provided with a retaining rib; a brake boss is formed at one end of the brake piece corresponding to the position of the circular boss, and the brake boss is matched in the ring of the circular boss; a limiting groove is formed in the periphery of the brake boss corresponding to the position of the blocking rib, and the blocking rib is movably matched between two ends of the limiting groove along with the relative rotation of the driving piece and the brake piece; a brake end face is arranged between the end parts of the two adjacent limiting grooves, a steel ball is arranged at each opening, and the steel balls are in clearance fit with the brake end face and the side wall of the accommodating cavity; the other end of the brake piece is linked with the external part of the tubular motor.
2. The brake structure of a tubular motor according to claim 1, wherein: the openings are arranged at the other end of the driving piece in a surrounding manner at equal intervals by taking the circle center of the circular boss as the center; the blocking ribs are positioned in the middle of the inner side of each section of circular boss.
3. The brake structure of a tubular motor according to claim 2, wherein: the number of the openings is three.
4. A brake structure of a tubular motor according to any one of claims 1 to 3, wherein: the brake assembly further comprises a fixing ring, the periphery of the fixing ring is in limited fit with the side wall of the accommodating cavity, the circular boss penetrates through the fixing ring, and the steel ball is in clearance fit with the inner ring of the fixing ring.
5. The brake structure of a tubular motor according to claim 4, wherein: the periphery of the fixing ring is provided with a plurality of limiting teeth, the side wall of the containing cavity is correspondingly provided with a circle of tooth-shaped end face, and the limiting teeth are meshed in the tooth-shaped end face.
6. The brake structure of a tubular motor according to claim 1, wherein: a first through hole communicated with the accommodating cavity is formed at one end of the shell, a positioning step is formed at one end of the driving piece corresponding to the first through hole, and the positioning step is in pin joint fit with the first through hole; and a matching hole matched with the transmission shaft of the first-stage speed reducing mechanism is formed in the positioning step, and the transmission shaft of the first-stage speed reducing mechanism is matched in the matching hole in an inserting manner.
7. The brake structure of a tubular motor according to claim 6, wherein: the brake piece is characterized by further comprising a second-stage speed reducing mechanism, a second through hole communicated with the accommodating cavity is formed in the other end of the shell, a matching gear is formed in the other end of the brake piece, and the matching gear penetrates through the second through hole and is linked with a transmission shaft of the second-stage speed reducing mechanism.
8. The brake structure of a tubular motor according to claim 7, wherein: the shell comprises a shell body and a cover body; the accommodating cavity and the first through hole are arranged in the shell, and the second through hole is arranged in the cover body; the end part of the cover body is buckled and matched with the end part of the cover body.
9. The brake structure of a tubular motor according to claim 8, wherein: one end of the cover body is provided with a buckle, a clamping hook groove is formed in the position, corresponding to the buckle, of one end of the shell, and the buckle is matched in the clamping hook groove in a fastening mode.
10. The brake structure of a tubular motor according to claim 8, wherein: one end of the cover body is provided with a positioning rib, one end of the shell is provided with a positioning groove, and the positioning rib is movably matched in the positioning groove.
11. The brake structure of a tubular motor according to claim 8, wherein: the other end of the shell is provided with a matching tooth groove which is in limit matching with the primary speed reducing mechanism.
12. The brake structure of a tubular motor according to claim 8, wherein: the other end of the cover body is provided with external teeth, and the external teeth are in limit fit with the secondary speed reducing mechanism.
13. The brake structure of a tubular motor according to claim 1, wherein: the brake assembly further comprises a pin shaft, and the pin shaft sequentially penetrates through the first-stage speed reducing mechanism, the brake piece and the second-stage speed reducing mechanism along the axial direction of the brake assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921271846.3U CN210469021U (en) | 2019-08-07 | 2019-08-07 | Brake structure of tubular motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921271846.3U CN210469021U (en) | 2019-08-07 | 2019-08-07 | Brake structure of tubular motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210469021U true CN210469021U (en) | 2020-05-05 |
Family
ID=70450117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921271846.3U Active CN210469021U (en) | 2019-08-07 | 2019-08-07 | Brake structure of tubular motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210469021U (en) |
-
2019
- 2019-08-07 CN CN201921271846.3U patent/CN210469021U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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Address after: 361000 building 37, huliyuan, Tongan Industrial Concentration Zone, Xiamen City, Fujian Province Patentee after: Xiamen Walda Intelligent Technology Co., Ltd Address before: 361000 building 37, huliyuan, Tongan Industrial Concentration Zone, Xiamen City, Fujian Province Patentee before: Harda (Xiamen) Plastic Co.,Ltd. |