CN210423489U

CN210423489U - Brake structure of tubular motor assembly

Info

Publication number: CN210423489U
Application number: CN201920810360.6U
Authority: CN
Inventors: 孙旭东; 朱才龙
Original assignee: Hangzhou Wistar Mechanical And Electric Technology Co ltd
Current assignee: Hangzhou Wistar Mechanical And Electric Technology Co ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-04-28
Anticipated expiration: 2029-05-31

Abstract

The utility model relates to a tubular motor element's brake structure. It has solved the not reasonable problem inadequately of current tubulose motor brake equipment design, including brake driving part and brake driven part, brake overcoat and brake dabber, brake dabber one end has the brake section of thick bamboo that is the tube-shape, the cover is equipped with the brake torsional spring on the brake section of thick bamboo portion, brake driving part has a plurality of initiative claw portions, the one end that brake driven part is close to brake driving part passes the brake dabber and has a plurality of passive claw portions, initiative claw portion and passive claw portion mutual dislocation set one by one and arbitrary initiative claw portion lies in arbitrary one side of passive claw portion, be equipped with the brake control structure between initiative claw portion and the passive claw portion. Has the advantages that: the transmission stability between the brake driving part and the brake driven part is good, the braking process is realized by the deformation of the torsional spring, the braking effect is good, and the braking sensitivity is high.

Description

Brake structure of tubular motor assembly

Technical Field

The utility model belongs to the technical field of electrical equipment, concretely relates to tubular motor element's brake structure.

Background

With the rapid development of the electromechanical industry, motors have been widely used in our present lives, for example, tubular motors have the advantages of compact structure, large torque, slow rotation speed and the like as driving devices, so that tubular motors are increasingly used in products such as roller shutters, sun shading systems, projection screens and the like which electrically complete lifting movement. In order to prevent the driven part such as the rolling shutter door from sliding down due to self weight, eliminate inaccurate positioning caused by the inertia effect of the rotor after rotating at high speed and ensure that the rolling shutter door can stop running at the moment when the power supply is cut off and stays at the position immediately, so that the rolling shutter door has self-locking capability and use safety, a tubular motor is required to be provided with a braking device.

The braking device of the common direct current tubular motor mainly comprises four parts, namely an electromagnet, an armature and a spring. The armature is used as a brake disc, the brake is realized by directly pressing the armature by a pressure spring, one surface of the brake disc can be matched with a brake disc through a brake spring, and the other surface of the brake disc is matched with the end surface of an electromagnetic brake. However, the brake device has many disadvantages, for example, because only a single-side friction force exists between the armature and the brake disc, and the armature is a metal iron plate, the friction coefficient is small, and the friction force is also small. After long-term use, the braking performance of the tubular motor is poor, so that the overall performance of the tubular motor is reduced, and the maintenance and replacement of the brake pad are very difficult.

In order to solve the defects of the prior art, people have long searched for and put forward various solutions. For example, chinese patent document discloses a tubular motor [201120031391.5] having an automatic brake device, including a driving source and a power transmission unit, characterized in that: be provided with automatic brake equipment among the power transmission unit, automatic brake equipment embraces the mechanism of stopping for the torsional spring, automatic brake equipment sets up in a solid fixed cylinder, gu fixed cylinder fixed connection be in on the stator of driving source, gu fixed cylinder does the axial extension structure of driving source stator, the torsional spring is embraced the mechanism of stopping automatic brake equipment under natural state with gu fixed cylinder forms and embraces the cooperation of tightly.

Above-mentioned scheme has solved the poor problem of current tubular motor brake equipment brake braking effect to a certain extent, but this scheme still exists not enoughly, for example, the brake braking reaction is sensitive inadequately, transmission stability subalternation.

Disclosure of Invention

The utility model aims at the above-mentioned problem, a tubular motor element's brake structure that reasonable in design brake braking reaction is sensitive is provided.

In order to achieve the above purpose, the utility model adopts the following technical proposal: this tubulose motor element's brake structure, include the brake driving part that links to each other with the motor shaft and the brake driven part that links to each other with the output shaft, brake driving part and brake driven part respectively circumferential direction set up the circumference inboard at a brake overcoat that is the tube-shape, be equipped with the brake dabber through circumferential positioning structure in the brake overcoat, brake dabber one end have and be the brake section of thick bamboo portion that is the tube-shape, just brake section of thick bamboo portion on the cover be equipped with the brake torsional spring, brake driving part have a plurality of initiative claws, just the one end that the brake driven part is close to the brake driving part pass the brake dabber and have a plurality of passive claws, initiative claw and passive claw one by one each other dislocation set and arbitrary one initiative claw is located arbitrary one side of passive claw, initiative claw and passive claw between be equipped with and enable brake torsional spring circumference inflation and brake driven part to rotate or when the synchronous syntropy of brake driving part when The brake control structure can circumferentially tighten the brake torsion spring and circumferentially stop the brake driven member when the brake driven member circumferentially rotates.

In the brake structure of the tubular motor assembly, the brake driving member has two driving claw portions, the brake driven member has two driven claw portions, any one driving claw portion of the two driving claw portions is located on one side of any one driven claw portion of the two driven claw portions, and the driving claw portion is abutted against the driven claw portion.

In the above-mentioned brake structure of tubular motor assembly, the brake control structure includes the bending foot that forms at the brake torsional spring both ends and radially outwards buckle, two driven claw parts of the driven piece of brake arbitrary one of them is located between two bending foot parts, and arbitrary one bending foot part in two bending foot parts is located between driven claw part and the initiative claw part, and the driven claw part be close to the one end both sides of the driven piece of brake have respectively along driven claw part width direction outwards extend and with initiative claw part one side offset step, just driven claw part keep away from the one end outside that has the step and form the clearance that supplies the bending foot to penetrate between the initiative claw part.

In the brake structure of the tubular motor assembly, the distance between the two bending foot parts of the brake torsion spring along the central line direction of the brake torsion spring is larger than the width of the driven claw part far away from one end with the step.

In foretell tubular motor element's brake structure, the brake torsional spring cover locate the one end circumference outside that brake section of thick bamboo portion is close to the brake dabber, and the mutual interference fit of brake torsional spring and brake section of thick bamboo portion.

In foretell tubular motor element's brake structure, the brake dabber include with the coaxial dabber ring body that links to each other of brake section of thick bamboo portion, dabber ring body and brake section of thick bamboo portion link formula structure as an organic whole, just thereby dabber ring body circumference inboard and brake section of thick bamboo circumference inboard communicate each other and form the dabber passageway.

In foretell tubular motor element's brake structure, circumference location structure include a plurality of settings at the inboard constant head tank of brake overcoat one end circumference, and each constant head tank circumference evenly sets up respectively and all sets up along brake overcoat axial extension, just dabber ring body circumference outside have a plurality of respectively with the location lug of constant head tank one-to-one, just the location lug block establish in the constant head tank respectively.

In foretell tubular motor element's brake structure, the brake initiative piece include through first rotation mounting structure coaxial rotation set up the inboard initiative dabber in brake overcoat one end circumference, just initiative dabber one end initiative connecting hole has, other end coaxial coupling has the initiative ring body, just initiative claw correspond respectively and set up in the circumference outside of initiative ring body, keep away from the one end coaxial coupling of initiative dabber at the initiative ring body and rotate the barrel.

In the brake structure of the tubular motor assembly, the first rotating installation structure comprises a first rotating bearing arranged between the inner side of the brake outer sleeve in the circumferential direction and the outer side of the driving mandrel in the circumferential direction.

In the brake structure of the tubular motor assembly, the brake driven part comprises a driven mandrel which is coaxially and rotatably arranged at the circumferential inner side of one end of the brake outer sleeve far away from the driving mandrel through a second rotating installation structure, one end of the driven mandrel is provided with a driven part connecting hole, the other end of the driven mandrel penetrates through the mandrel channel and is coaxially connected with a driven barrel, the driven claw parts are respectively and correspondingly arranged at the circumferential outer side of one end of the driven barrel, one end of the driven barrel is provided with a rotating hole for inserting the rotating barrel, the other end of the driven barrel is provided with a limiting ring body, and the circumferential inner side of the brake barrel part is provided with an annular limiting step abutted against the limiting ring body; the second rotation mounting structure comprises a second rotation bearing arranged between the circumferential inner side of the brake outer sleeve and the circumferential outer side of the driven mandrel.

Compared with the prior art, the utility model has the advantages of: through brake torsional spring and brake dabber interference fit, brake driving piece and brake driven piece respectively have two angles and support each other and lean on the setting, and transmission stability is good between brake driving piece and the brake driven piece, adopts the deformation through the torsional spring to realize the braking process, and brake braking is effectual, and brake sensitivity is high.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a structural sectional view of the present invention;

FIG. 3 is an exploded view of the structure of the present invention;

fig. 4 is an exploded view of another perspective of the present invention;

FIG. 5 is a schematic view of a partial structure of the brake device of the present invention;

in the figure, a brake driving part 1, a driving claw part 11, a driving mandrel 12, a driving part connecting hole 121, a driving ring body 13, a rotating cylinder body 14, a first rotating bearing 15, a brake driven part 2, a driven claw part 21, a step 211, a movable gap 212, a driven mandrel 22, a driven part connecting hole 221, a driven cylinder body 23, a rotating hole 24, a limiting ring body 25, an annular limiting step 26, a second rotating bearing 27, a brake outer sleeve 3, a circumferential positioning structure 4, a positioning groove 41, a positioning lug 42, a brake mandrel 5, a brake cylinder body 51, a mandrel ring body 52, a mandrel channel 53, a brake torsion spring 6 and a bent foot part 61.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-4, the brake structure of the tubular motor assembly includes a brake driving member 1 connected to a motor shaft and a brake driven member 2 connected to an output shaft, the brake driving member 1 and the brake driven member 2 are respectively disposed on a circumferential inner side of a cylindrical brake sleeve 3 in a circumferential rotation manner, a brake spindle 5 is disposed in the brake sleeve 3 through a circumferential positioning structure 4, one end of the brake spindle 5 has a cylindrical brake cylinder 51, and the brake cylinder 51 is sleeved with a brake torsion spring 6, preferably, the brake torsion spring 6 is sleeved on a circumferential outer side of one end of the brake cylinder 51 close to the brake spindle 5, and the brake torsion spring 6 and the brake cylinder 51 are in interference fit with each other. Preferably, the brake driving member 1 has two driving pawl parts 11, and one end of the brake driven member 2 close to the brake driving member 1 passes through the brake core shaft 5 and has two driven pawl parts 21, the number of the driving pawl parts 11 and the driven pawl parts 21 is one, and the stability is high when the brake driven member rotates, and the eccentric phenomenon does not occur, so the number of the driving pawl parts 11 and the driven pawl parts 21 is two, the driving pawl parts 11 and the driven pawl parts 21 are staggered one by one, any one driving pawl part 11 is positioned at one side of any one driven pawl part 21, and the driving pawl part 11 is abutted against the driven pawl parts 21. For braking, a brake control structure is provided between the driving pawl 11 and the driven pawl 21, which can make the brake torsion spring 6 circumferentially expand when the brake driving member 1 rotates circumferentially and the brake driven member 2 synchronously rotates with the brake driving member 1 in the same direction or can make the brake torsion spring 6 circumferentially contract when the brake driven member 2 rotates circumferentially and make the brake driven member 2 circumferentially stop.

Specifically, the brake control structure here includes bent leg portions 61 formed at both ends of the brake torsion spring 6 and bent radially outward, and either one of the two passive pawl portions 21 of the brake passive member 2 is located between the two bent leg portions 61, and any one of the two bent leg portions 61 is located between the passive claw portion 21 and the active claw portion 11, and the two sides of one end of the passive claw part 21 close to the brake driven part 2 are respectively provided with a step 211 which extends outwards along the width direction of the passive claw part 21 and is propped against one side of the driving claw part 11, and a movable gap 212 for the bending foot part 61 to penetrate is formed between the outer side of one end of the driven claw part 21 far away from the step 211 and the driving claw part 11, here, the distance between the two bent legs 61 of the brake torsion spring 6 along the center line of the brake torsion spring 6 is greater than the width of the passive pawl 21 away from the end with the step 211.

As shown in fig. 5, when the brake driving member 1 rotates circumferentially, the driving pawl 11 rotates in both forward and reverse directions, the driving pawl 11 contacts with a bent leg 61 of the brake torsion spring 6 first, the driving pawl 11 pushes the bent leg 61 to expand the brake torsion spring 6 circumferentially, the inner diameter of the brake torsion spring 6 increases to release the brake torsion spring 6 from the brake core shaft 5, the driving pawl 11 continues to rotate to drive the bent leg 61 to move in the clearance 212, the inner diameter of the brake torsion spring 6 increases until one side of the driving pawl 11 abuts against the step 211 of the driven pawl 21, the driving pawl 11 drives the driven pawl 21 to rotate synchronously when the brake torsion spring 61 is in an expanded state, the power rotates to the next stage, and when the brake driven member 2 rotates circumferentially, the driven pawl 21 rotates both in forward and reverse directions, before the step 211 of the passive claw part 21 is not contacted with one side of the active claw part 11, the passive claw part 21 drives the inner diameter of the brake torsion spring 6 to be reduced, so that the brake torsion spring 6 is tightly held with the brake mandrel 5, a large friction force is generated between the brake torsion spring 6 and the brake mandrel 5, the whole braking process is realized, and the power cannot be transmitted to the brake active part 1.

Specifically, the brake spindle 5 and the brake cover 3 in this embodiment are fixed. Brake torsional spring 6 and 5 interference fit of brake dabber, brake driving piece 1 respectively has two angles with brake driven piece 2, when rotating, the moment of motor shaft transmits for brake driving piece 1 after through the gear box one-level, no matter clockwise rotation or anticlockwise rotation brake driving piece 1 all can make 6 internal diameters grow of brake torsional spring, make brake torsional spring 6 and brake dabber 5 loosen, thereby make moment transmit for driven piece 2 and then transmit for the second tertiary of gear box, finally transmit away by the output shaft. And when moment from the output shaft transmission for gear box two tertiary and then for brake driven piece 2, no matter clockwise rotation or anticlockwise rotation, the brake driven piece 2 all can make 6 internal diameters of brake torsional spring diminish for brake torsional spring 6 holds tightly with brake dabber 5, produces very big frictional force between brake torsional spring 6 and the brake dabber 5, thereby makes moment can not continue to transmit the gear box one-level because of brake dabber 5 is fixed motionless, so play the effect of brake.

Further, the brake spindle 5 in the present embodiment includes a spindle ring body 52 coaxially connected to the brake cylinder portion 51, the spindle ring body 52 and the brake cylinder portion 51 are connected as an integral structure, and a circumferential inner side of the spindle ring body 52 and a circumferential inner side of the brake cylinder portion 51 communicate with each other to form a spindle passage 53.

Wherein, circumference location structure 4 here includes a plurality of setting at the inboard constant head tank 41 of brake overcoat 3 one end circumference, and each constant head tank 41 circumference evenly sets up respectively and all extends the setting along brake overcoat 3 axial, and dabber ring body 52 circumference outside has a plurality of positioning lug 42 with constant head tank 41 one-to-one respectively, and positioning lug 42 blocks respectively and establishes in constant head tank 41, during the assembly, through pegging graft positioning lug 42 in constant head tank 41, realize brake dabber 5 and brake overcoat 3 circumference location.

Further, the brake driving member 1 herein includes a driving core shaft 12 coaxially rotatably disposed at an inner circumferential side of one end of the brake housing 3 through a first rotation mounting structure, and the driving core shaft 12 has a driving member coupling hole 121 at one end thereof and a driving ring 13 coaxially coupled to the other end thereof, and driving claw portions 11 respectively correspondingly disposed at outer circumferential sides of the driving ring 13, and a rotation cylinder 14 coaxially coupled to one end of the driving ring 13 away from the driving core shaft 12. Preferably, the first rotational mounting arrangement here comprises a first rotational bearing 15 arranged between the circumferentially inner side of the brake housing 3 and the circumferentially outer side of the drive spindle 12. It is obvious that the driving spindle 12 is connected to the brake driving member 1 and the brake outer sleeve 3 in a circumferential direction through the first rotary bearing 15 and the brake outer sleeve 3.

Similarly, the brake driven member 2 here includes a driven spindle 22 coaxially rotatably disposed inside the brake outer sleeve 3 in the circumferential direction of the end far from the driving spindle 12 through a second rotary mounting structure, one end of the driven spindle 22 has a driven member connecting hole 221, the other end penetrates through the spindle passage 53 and is coaxially connected with the driven cylinder 23, the driven claw portions 21 are respectively correspondingly disposed outside the driven cylinder 23 in the circumferential direction of the end, one end of the driven cylinder 23 has a rotary hole 24 for inserting the rotary cylinder 14, the other end has a limit ring body 25, and the brake cylinder portion 51 has an annular limit step 26 abutting against the limit ring body 25 in the circumferential direction. Preferably, the second rotational mounting arrangement here comprises a second rotational bearing 27 disposed between the circumferentially inner side of the brake outer sleeve 3 and the circumferentially outer side of the driven spindle 22. Obviously, the passive spindle 22 is connected to the brake passive member 2 and the brake outer sleeve 3 in a circumferential rotation manner through the second rotation bearing 27 and the brake outer sleeve 3.

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.

Although terms such as the brake driving member 1, the driving claw 11, the driving core shaft 12, the driving member connecting hole 121, the driving ring 13, the rotating cylinder 14, the first rotating bearing 15, the brake driven member 2, the driven claw 21, the step 211, the movable gap 212, the driven core shaft 22, the driven member connecting hole 221, the driven cylinder 23, the rotating hole 24, the retainer ring 25, the annular retainer step 26, the second rotating bearing 27, the brake outer sleeve 3, the circumferential positioning structure 4, the positioning groove 41, the positioning projection 42, the brake core shaft 5, the brake cylinder 51, the core shaft ring 52, the core shaft passage 53, the brake torsion spring 6, and the bent leg 61 are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a tubulose motor element's brake structure, includes brake driving member (1) that links to each other with the motor shaft and brake driven member (2) that links to each other with the output shaft, its characterized in that, brake driving member (1) and brake driven member (2) respectively circumferential direction set up the circumference inboard at a brake overcoat (3) that is the tube-shape, be equipped with brake dabber (5) through circumferential location structure (4) in brake overcoat (3), brake dabber (5) one end brake section of thick bamboo portion (51) that are the tube-shape have, just brake section of thick bamboo portion (51) on the cover be equipped with brake torsional spring (6), brake driving member (1) a plurality of initiative claw portions (11) have, and brake driven member (2) one end near brake driving member (1) pass brake dabber (5) and have a plurality of passive claw portions (21), initiative claw portion (11) and passive claw portion (21) mutual dislocation set one by one and arbitrary one by one and any initiative claw portion (2), (211) And a brake control structure which can enable the brake torsion spring (6) to circumferentially expand when the brake driving piece (1) circumferentially rotates and enables the brake driven piece (2) to synchronously rotate in the same direction with the brake driving piece (1) or can enable the brake torsion spring (6) to circumferentially contract when the brake driven piece (2) circumferentially rotates and enables the brake driven piece (2) to circumferentially stop is arranged between the driving claw part (11) and the driven claw part (21).

2. The brake structure of the tubular motor assembly according to claim 1, wherein the brake driving member (1) has two driving claw portions (11), the brake driven member (2) has two driven claw portions (21), any one driving claw portion (11) of the two driving claw portions (11) is positioned on one side of any one driven claw portion (21) of the two driven claw portions (21), and the driving claw portion (11) is abutted against the driven claw portion (21).

3. The brake structure of the tubular motor assembly as claimed in claim 2, wherein the brake control structure comprises bent legs (61) formed at both ends of the brake torsion spring (6) and bent radially outward, any one passive claw part (21) of the two passive claw parts (21) of the brake passive member (2) is positioned between the two bent foot parts (61), and any one bending foot part (61) of the two bending foot parts (61) is positioned between the driven claw part (21) and the driving claw part (11), and both sides of one end of the driven claw part (21) close to the brake driven part (2) are respectively provided with a step (211) which extends outwards along the width direction of the driven claw part (21) and is propped against one side of the driving claw part (11), and a movable gap (212) for the bending foot part (61) to penetrate is formed between the outer side of one end of the driven claw part (21) far away from the step (211) and the driving claw part (11).

4. The tubular motor assembly brake structure as claimed in claim 3, wherein the distance between the two bending feet (61) of the brake torsion spring (6) along the central line of the brake torsion spring (6) is greater than the width of the passive jaw (21) away from the end with the step (211).

5. The brake structure of the tubular motor assembly according to claim 1, 2, 3 or 4, wherein the brake torsion spring (6) is sleeved on the circumferential outer side of one end of the brake cylinder portion (51) close to the brake mandrel (5), and the brake torsion spring (6) and the brake cylinder portion (51) are in interference fit with each other.

6. The brake structure of the tubular motor assembly as claimed in claim 5, wherein the brake spindle (5) includes a spindle ring body (52) coaxially coupled to the brake cylinder (51), the spindle ring body (52) and the brake cylinder (51) are coupled to form a unitary structure, and a circumferential inner side of the spindle ring body (52) and a circumferential inner side of the brake cylinder (51) are communicated with each other to form a spindle passage (53).

7. The tubular motor assembly brake structure of claim 6, wherein the circumferential positioning structure (4) comprises a plurality of positioning grooves (41) formed at the circumferential inner side of one end of the brake housing (3), each positioning groove (41) is circumferentially and uniformly arranged and axially extends along the brake housing (3), the circumferential outer side of the mandrel ring body (52) is provided with a plurality of positioning protrusions (42) corresponding to the positioning grooves (41) one by one, and the positioning protrusions (42) are respectively clamped in the positioning grooves (41).

8. The tubular motor assembly brake structure of claim 5, wherein the brake driving member (1) includes a driving core shaft (12) coaxially rotatably disposed at the inner circumferential side of one end of the brake housing (3) through the first rotating mounting structure, one end of the driving core shaft (12) has a driving member connecting hole (121), the other end of the driving core shaft is coaxially connected with a driving ring (13), the driving claw portions (11) are respectively and correspondingly disposed at the outer circumferential side of the driving ring (13), and one end of the driving ring (13) far away from the driving core shaft (12) is coaxially connected with a rotating cylinder (14).

9. The tubular motor assembly brake structure of claim 8, wherein the first rotational mounting structure comprises a first rotational bearing (15) disposed between a circumferentially inner side of the brake housing (3) and a circumferentially outer side of the driving spindle (12).

10. The brake structure of a tubular motor assembly according to claim 8, the brake driven part (2) comprises a driven mandrel (22) which is coaxially and rotatably arranged at the circumferential inner side of one end of the brake outer sleeve (3) far away from the driving mandrel (12) through a second rotating installation structure, one end of the passive mandrel (22) is provided with a passive part connecting hole (221), the other end of the passive mandrel penetrates through the mandrel channel (53) and is coaxially connected with a passive cylinder body (23), the driven claw parts (21) are respectively and correspondingly arranged at the circumferential outer side of one end of the driven cylinder body (23), one end of the driven cylinder (23) is provided with a rotating hole (24) for inserting the rotating cylinder (14), the other end is provided with a limiting ring body (25), and the circumferential inner side of the brake cylinder part (51) is provided with annular limit steps (211) (26) which are abutted against the limit ring body (25); the second rotating installation structure comprises a second rotating bearing (27) arranged between the circumferential inner side of the brake outer sleeve (3) and the circumferential outer side of the driven mandrel (22).