External rotor motor brake

Abstract

The present invention discloses an outer rotor motor gate, which relates to a security inspection system, and may include: an outer rotor for connecting with a gate door, on which a first clamping part is provided; an inner stator arranged inside the outer rotor, including a locking assembly, the locking assembly including a counterweight and a locking piece, the locking piece including a lever body, a support part cooperating with the counterweight is provided at one lever end of the lever body, and a second clamping part cooperating with the first clamping part is provided at the other lever end, the support part is located on the falling path of the counterweight; when the locking assembly is in a locked state, the counterweight is placed on the support part, and the first clamping part is clamped and connected with the second clamping part; when the locking assembly is in an unlocked state, the counterweight is separated from the support part, and the first clamping part is unclamped from the second clamping part. When power is off, the present invention can achieve timely locking of the gate door.

Description

Technical Field

[0001] The invention relates to a security inspection system, in particular to an outer rotor motor gate. Background Art

[0002] In the existing security field, the security inspection systems used are mostly equipped with security inspection motor gates, which verify the identity of the passers-by and control the security inspection motor gates to release the passers-by after the verification.

[0003] In the existing motor gates on the market, in the event of an unexpected power outage, the motor gates may not be opened and closed in time, affecting the normal execution of security inspection activities. Summary of the invention

[0004] The present invention aims at solving the problems existing in the existing motor brake and provides an outer rotor motor brake.

[0005] The technical solution proposed by the present invention for the above-mentioned technical problem is as follows:

[0006] The present invention provides an outer rotor motor brake, comprising:

[0007] An outer rotor used for connecting to the gate, wherein a first clamping portion is provided on the outer rotor;

[0008] The inner stator disposed inside the outer rotor comprises a locking assembly, wherein the locking assembly comprises a counterweight and a locking member, wherein the locking member comprises a lever body, wherein a support portion cooperating with the counterweight is disposed at one lever end of the lever body, and a second clamping portion cooperating with the first clamping portion is disposed at the other lever end, wherein the support portion is located on the falling path of the counterweight;

[0009] When the locking assembly is in a locked state, the counterweight is placed on the supporting portion, and the first clamping portion is clamped and connected with the second clamping portion;

[0010] When the locking assembly is in an unlocked state, the counterweight is separated from the supporting portion, and the first clamping portion is released from the second clamping portion.

[0011] According to the above-mentioned outer rotor motor brake, the counterweight is arranged at the central axis position of the inner stator;

[0012] The locking assembly further includes a first magnetic coil, and the counterweight includes a first magnetic sleeve that cooperates with the first magnetic coil, and the first magnetic sleeve is arranged on the central axis of the first magnetic coil.

[0013] According to the above-mentioned outer rotor motor brake, the supporting portion is located at one end of the power arm of the lever body, and the second clamping portion is located at one end of the resistance arm of the lever body.

[0014] According to the above-mentioned external rotor motor gate, the locking assembly also includes a first coil sleeve for fixing the first magnetic coil and a baffle arranged at the top of the first coil sleeve, a first through hole is provided at the top of the first coil sleeve, and an unlocking rod connected to the counterweight is provided in the first through hole.

[0015] According to the above-mentioned outer rotor motor brake, the outer rotor includes an outer rotor connecting sleeve, a stator driven shaft is arranged in the outer rotor connecting sleeve, and the first magnetic attraction coil is arranged in the stator driven shaft;

[0016] The first clamping portion includes a clamping hole provided on the outer rotor connecting sleeve, and the second clamping portion includes an arc-shaped protrusion;

[0017] The stator driven shaft is provided with a second through hole for allowing the arc-shaped protrusion to extend out in a locked state to form a locking connection with the locking hole.

[0018] According to the above-mentioned outer rotor motor brake, the outer rotor further comprises an outer rotor sleeve, and the outer rotor connecting sleeve is arranged on the top of the outer rotor sleeve;

[0019] A second magnetic sleeve is arranged in the outer rotor sleeve, and a stator power shaft and a stator driving coil for driving the stator power shaft to rotate are arranged in the second magnetic sleeve.

[0020] According to the above-mentioned outer rotor motor brake, it also includes a brake arranged on the top of the outer rotor connecting sleeve, and the brake includes a brake base sleeved on the outside of the stator driven shaft, a brake coil arranged in the brake base and a brake body arranged on the brake base.

[0021] According to the above-mentioned outer rotor motor brake, a first bearing is provided at the bottom end of the outer rotor connecting sleeve, and the stator power shaft is fixedly connected to the bearing ring of the first bearing.

[0022] According to the above outer rotor motor brake, it also includes an angle encoder, the angle encoder includes an encoder mounting plate connected to the top end of the stator power shaft, an angle encoder disk arranged on the encoder mounting plate, and an encoder magnet arranged on the angle encoder disk;

[0023] A magnet seat is provided at the end of the stator driven shaft, and the bottom side of the magnet seat is fixedly connected to the encoder magnet; the first bearing is provided above the magnet seat.

[0024] According to the above-mentioned outer rotor motor brake, a conductive slip ring is further provided in the stator driven shaft, the conductive slip ring is located below the locking assembly, and an insulating sleeve is provided between the outer wall of the conductive slip ring and the inner wall of the stator driven shaft;

[0025] The magnet seat comprises a middle protrusion fixedly connected to the inner ring of the conductive slip ring.

[0026] The technical solution provided by the embodiment of the present invention has the following beneficial effects:

[0027] In the outer rotor motor gate provided by the present invention, the counterweight of the locking assembly falls onto the support portion at one end of the lever body when the power is off, so that the second clamping portion at the other end of the lever body is clamped with the first clamping portion on the outer rotor, thereby achieving a locked state of the outer rotor motor gate, so that the gate door can be locked in time when the power is off.

[0028] Furthermore, the locking assembly can also use a first magnetic coil disposed in the stator driven shaft to control the position of the counterweight. When the first magnetic coil is energized, the counterweight is separated from the support, so that the outer rotor motor gate is in an unlocked state.

[0029] Furthermore, the locking assembly can also cooperate with the brake to control the opening or closing of the gate door, that is, in normal operation, when the brake is powered on, the gate door is locked, and the stator driven shaft cannot drive the gate door to rotate; when the brake is not powered on, the first magnetic coil is powered on, the first magnetic coil controls the counterweight to separate from the support, the outer rotor motor gate is in an unlocked state, and the gate door can rotate driven by the stator driven shaft. In abnormal operation, the brake and the first magnetic coil are not powered on. At this time, the counterweight falls onto the support at one end of the lever body when the power is off, and the gate door is locked. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A schematic diagram of the three-dimensional structure of an outer rotor motor brake provided by the present invention in one embodiment;

[0032] Figure 2 A schematic cross-sectional structure diagram of the upper half of the outer rotor motor brake provided by the present invention;

[0033] Figure 3 This is a schematic cross-sectional structure diagram of the lower half of the outer rotor motor brake provided by the present invention. DETAILED DESCRIPTION

[0034] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] See also Figure 1 , which is a three-dimensional structural diagram of an outer rotor motor gate provided by the present invention under one embodiment. The outer rotor motor gate 100 is mainly used in security inspection systems, and may include a gate door panel 101 and an outer rotor sleeve shell 102 for driving the gate door 101 to rotate. The outer rotor motor gate 100 of the present invention drives the gate door 101 thereon to move by driving the outer rotor sleeve shell 102 to rotate, so as to form the opening or closing of the motor gate. A mounting seat 103 is provided at both ends of the outer rotor sleeve shell 102, and a first through hole (not shown) is also provided on the mounting seat 103, and the first through hole is used for the manual unlocking rod 104 to extend.

[0036] See also Figure 2 and Figure 3 ,in, Figure 2 A schematic cross-sectional structure diagram of the upper half of the outer rotor motor brake provided by the present invention; Figure 3 The schematic diagram of the cross-sectional structure of the lower half of the outer rotor motor brake provided by the present invention. Figure 1 An outer rotor sleeve 128 and an outer rotor connecting sleeve 105 disposed on the outer rotor sleeve 128 are disposed in the outer rotor housing 102, a stator driven shaft 109 is disposed in the outer rotor connecting sleeve 105, and a stator power shaft 124 is disposed in the outer rotor sleeve 128, wherein the stator driven shaft 109 can be fixed in the outer rotor connecting sleeve 105 through two first bearings 110, 118; and the stator power shaft 124 can be fixed in the outer rotor sleeve 128 through two second bearings 123, 133. In addition, two collars 125, 129 can be disposed between the two second bearings 123, 133 to further fix the stator power shaft 124.

[0037] It can be understood that the outer rotor housing 102, the outer rotor connecting sleeve 105 and the outer rotor sleeve 128 all belong to the outer rotor part, while the stator driven shaft 109 and the stator power shaft 124 all belong to the inner stator part.

[0038] In the present invention, a first clamping portion is provided on the outer rotor connecting sleeve 105 , and here, the first clamping portion is a clamping hole 1051 .

[0039] A locking assembly is provided in the stator driven shaft 109, and the locking assembly may include a counterweight 114 and a locking piece 115, wherein the locking piece 115 is a lever body, one lever end of which is provided with a supporting portion 1151 that cooperates with the counterweight 114, and the other lever end of which is provided with a second clamping portion that cooperates with the first clamping portion, corresponding to the clamping hole 1051, wherein the second clamping portion here is an arc-shaped protrusion 1152 that adapts to the clamping hole 1051. Here, a pin 1153 can be set as the rotation fulcrum of the lever body, and the support part 1151 is located at one end of the power arm of the lever body, and the arc-shaped protrusion 1152 is located at one end of the resistance arm of the lever body, so that: when the locking assembly is in the locked state, the counterweight 114 is placed on the support part 1151, and the arc-shaped protrusion 1152 is partially located in the clamping hole 1051 to form a clamping connection; when the locking assembly is in the unlocked state, the counterweight 114 is separated from the support part 1151, and the arc-shaped protrusion 1152 is released from the clamping hole 1051, that is, the projections of the arc-shaped protrusion 1152 and the clamping hole 1051 on the horizontal plane do not overlap.

[0040] It is understandable that the locking member 115 can be arranged between the two first bearings 110, 118, or at one end of the first bearing 118 on the bottom side. When the locking member 115 is arranged between the two first bearings 110, 118, a second through hole 1091 is further provided on the stator driven shaft 109 for partially extending the arc-shaped protrusion 1152. The support portion 1151 can be a support plate, and the plate surface of the support plate can contact the bottom surface of the counterweight 114. Here, the arc-shaped protrusion 1152 is mainly used to avoid forming a locking structure with the edge of the hole 1051, so that after the counterweight 114 leaves the support portion 1151, the arc-shaped protrusion 1152 still partially extends into the hole 1051 and cannot be restored to the unlocked state normally.

[0041] In the present invention, the counterweight 114 is preferably arranged at the central axis position of the stator driven shaft 109, and the supporting portion 1151 is located on the falling path of the counterweight 114 under the action of gravity, so that: when the counterweight 114 falls on the supporting portion 1151, the arc-shaped protrusion 1152 can rotate counterclockwise relative to the pin 1153 by relying on its own weight, so that the arc-shaped protrusion 1152 can partially extend into the clamping hole 1051 to form a clamping connection; when the counterweight 114 is separated from the supporting portion 1151, the arc-shaped protrusion 1152 rotates clockwise relative to the pin 153 by relying on its own weight, so that the arc-shaped protrusion 1152 does not include a portion that forms a clamping connection with the clamping hole 1051.

[0042] Here, the counterweight 114 is connected to the unlocking rod 104. Therefore, when the counterweight 114 falls on the support 1151 due to power failure, so that the stator driven shaft 109 and the outer rotor connecting tube 105 are locked, the unlocking rod 104 can be manually pulled to separate the counterweight 114 from the support 1151, thereby achieving unlocking.

[0043] In the present invention, a first coil base 111 may be further provided in the stator driven shaft 109, a first magnetic coil 113 may be provided in the first coil base 111, and a counterweight 114 may include a first magnetic sleeve 1141 magnetically matched with the first magnetic coil 113, and the first magnetic sleeve 1141 is preferably provided on the central axis of the first magnetic coil 113. When the first magnetic coil 113 is powered on, the first magnetic sleeve 1141 is magnetically attracted to separate from the support portion 1151, and unlocking is also achieved. Here, in order to limit the movement position of the first magnetic sleeve 1141 after being magnetically attracted, a baffle 112 may also be provided on one side of the top end of the first coil base 111.

[0044] Furthermore, a brake can be arranged on the first bearing 110 on the top side, and the brake can be sleeved on the brake base 106 outside the stator driven shaft 109, the brake coil 107 arranged in the brake base 106, and the brake body 108 arranged on the brake base 106. Here, the brake body 108 can include a brake movable plate 1081 and a spring arranged at the bottom of the brake movable plate 1081. The brake movable plate 1081 is provided with a gear meshing with the outer rotor connecting sleeve 105, so that when the brake coil 107 is energized, the brake movable plate 1081 is close to the side where the brake coil 107 is located, so that the outer rotor connecting sleeve 105 is meshed with the brake movable plate 1081, and the motor gate is locked. When the brake coil 107 is not energized, under the action of the spring, the brake movable plate 1081 is separated from the outer rotor connecting sleeve 105, and the motor gate is unlocked. In addition, a graphite bearing 134 may be further provided on the brake body 108 to fix it on the stator driven shaft 109 .

[0045] In the present invention, a second magnetic sleeve 127 may be provided in the outer rotor sleeve 128, and a stator power shaft 124 and a stator drive coil 126 for driving the stator power shaft 124 to rotate are provided in the second magnetic sleeve 127. When the stator drive coil 126 is energized, it can drive the stator power shaft 124 to rotate, and the stator power shaft 124 can further drive the stator driven shaft 109 to rotate.

[0046] In the present invention, an angle encoder is provided between the stator driven shaft 109 and the stator power shaft 124, and the angle encoder can convert the rotation amount of the stator power shaft 124 into a specific rotation angle of the stator driven shaft 109, such as 90 degrees, so that the stator driven shaft 109 can further drive the outer rotor connecting sleeve 105 and the outer rotor sleeve shell 102 to rotate, and then drive the motor gate to rotate 90 degrees, thereby realizing the opening or closing of the motor gate. The angle encoder may include an encoder mounting plate 122 connected to the top of the stator power shaft 124, an angle encoder disk 121 provided on the encoder mounting plate 122, and an encoder magnet 120 provided on the angle encoder disk 121, and the encoder magnet 120 may be fixed by a magnet seat 118, and the first bearing 118 located at the bottom side is located above the magnet seat 118.

[0047] Here, a conductive slip ring 117 is also provided in the stator driven shaft 109, and the conductive slip ring 117 is located below the locking assembly. An insulating ring 116 is provided between the outer wall of the conductive slip ring 117 and the inner wall of the stator driven shaft 109, and the magnet seat 118 may also include a middle protrusion fixedly connected to the inner ring of the conductive slip ring 117.

[0048] In the external rotor motor gate 100 provided by the present invention, the counterweight 114 of the locking assembly falls onto the support 1151 at one end of the lever body when the power is off, so that the second clamping portion at the other end of the lever body is clamped with the first clamping portion on the external rotor, thereby achieving a locked state of the external rotor motor gate, so that the gate door 101 can be locked in time when the power is off.

[0049] Furthermore, the locking assembly can also use the first magnetic coil set in the stator driven shaft 109 to control the position of the counterweight 114. When the first magnetic coil 113 is energized, the counterweight 114 is separated from the support 1151, so that the outer rotor motor gate 100 is in an unlocked state.

[0050] Furthermore, the locking assembly can also cooperate with the brake to control the opening or closing of the gate door, that is, in normal operating state (that is, in normal power supply state), when the brake is powered on, the gate door is locked, and the stator driven shaft cannot drive the gate door to rotate; when the brake is not powered on, the first magnetic coil 113 is powered on, and the first magnetic coil 113 controls the counterweight 114 to separate from the support 1151, the outer rotor motor gate 100 is in an unlocked state, and the gate door 101 can rotate driven by the stator driven shaft 109. In an abnormal operating state (that is, in a non-powered state), the brake and the first magnetic coil are not powered on. At this time, the counterweight 114 falls onto the support 1151 at one end of the lever body when the power is off, and the gate door 101 is locked.

[0051] It can be understood that the outer rotor motor gate provided by the present invention may also include a controller, which can achieve adaptation to more scenarios by energizing and deenergizing corresponding coils or electrical components.

[0052] Compared with the traditional gate, the outer rotor motor gate provided by the present invention can be completed by the motor factory for the brake, motor and gate door structures, which ensures a unified process, helps to improve the yield rate, and can reduce material costs to a certain extent. The internal space utilization rate of the outer rotor is large, and it is also convenient for maintenance. At the same time, the possibility of being restricted by height is small, and the applicable scenarios are relatively wide and flexible.

[0053] It can be understood that the external rotor motor brake provided by the present invention may include two brakes, which are respectively arranged at the upper and lower parts of the whole machine, wherein the upper brake is used to engage with the outer rotor connecting sleeve to form a lock when the brake coil is energized; the lower brake is used to engage with the outer rotor sleeve to form a lock when the brake coil is energized.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An external rotor motor brake, characterized in that: include: An outer rotor used for connecting to the gate, wherein a first clamping portion is provided on the outer rotor; The inner stator disposed inside the outer rotor comprises a locking assembly, wherein the locking assembly comprises a counterweight and a locking member, wherein the locking member comprises a lever body, wherein a support portion cooperating with the counterweight is disposed at one lever end of the lever body, and a second clamping portion cooperating with the first clamping portion is disposed at the other lever end, wherein the support portion is located on the falling path of the counterweight; When the locking assembly is in a locked state, the counterweight is placed on the supporting portion, and the first clamping portion is clamped and connected with the second clamping portion; When the locking assembly is in an unlocked state, the counterweight is separated from the supporting portion, and the first clamping portion is released from the second clamping portion.

2. The outer rotor motor brake according to claim 1, characterized in that: The counterweight is arranged at the central axis position of the inner stator; The locking assembly further includes a first magnetic coil, and the counterweight includes a first magnetic sleeve that cooperates with the first magnetic coil, and the first magnetic sleeve is arranged on the central axis of the first magnetic coil.

3. The outer rotor motor brake according to claim 2, characterized in that: The supporting portion is located at one end of the power arm of the lever body, and the second clamping portion is located at one end of the resistance arm of the lever body.

4. The outer rotor motor brake according to claim 3, characterized in that: The locking assembly also includes a first coil sleeve for fixing the first magnetic coil and a blocking piece arranged at the top of the first coil sleeve. A first through hole is arranged at the top of the first coil sleeve, and an unlocking rod connected to the counterweight is arranged in the first through hole.

5. The outer rotor motor brake according to any one of claims 2 to 4, characterized in that: The outer rotor comprises an outer rotor connecting sleeve, a stator driven shaft is arranged in the outer rotor connecting sleeve, and the first magnetic attraction coil is arranged in the stator driven shaft; The first clamping portion includes a clamping hole provided on the outer rotor connecting sleeve, and the second clamping portion includes an arc-shaped protrusion; The stator driven shaft is provided with a second through hole for allowing the arc-shaped protrusion to extend out in a locked state to form a locking connection with the locking hole.

6. The outer rotor motor brake according to claim 5, characterized in that: The outer rotor further comprises an outer rotor sleeve, and the outer rotor connecting sleeve is arranged on the top of the outer rotor sleeve; A second magnetic sleeve is arranged in the outer rotor sleeve, and a stator power shaft and a stator driving coil for driving the stator power shaft to rotate are arranged in the second magnetic sleeve.

7. The outer rotor motor brake according to claim 6, characterized in that: It also includes a brake arranged on the top of the outer rotor connecting sleeve, and the brake includes a brake base sleeved on the outside of the stator driven shaft, a brake coil arranged in the brake base and a brake body arranged on the brake base.

8. The outer rotor motor brake according to claim 6, characterized in that: A first bearing is provided at the bottom end of the outer rotor connecting sleeve, and the stator power shaft is fixedly connected to the bearing ring of the first bearing.

9. The outer rotor motor brake according to claim 8, characterized in that: It also includes an angle encoder, which includes an encoder mounting plate connected to the top end of the stator power shaft, an angle encoder disk disposed on the encoder mounting plate, and an encoder magnet disposed on the angle encoder disk; A magnet seat is provided at the end of the stator driven shaft, and the bottom side of the magnet seat is fixedly connected to the encoder magnet; the first bearing is provided above the magnet seat.

10. The outer rotor motor brake according to claim 9, characterized in that: A conductive slip ring is also provided in the stator driven shaft, the conductive slip ring is located below the locking assembly, and an insulating sleeve is provided between the outer wall of the conductive slip ring and the inner wall of the stator driven shaft; The magnet seat comprises a middle protrusion fixedly connected to the inner ring of the conductive slip ring.

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