Tubular motor brake structure

Abstract

The utility model discloses a kind of tubular motor brake structures, it is installed on tubular motor body for braking to tubular motor body, the both sides of the tubular motor body are provided with the fixed frame for supporting tubular motor body, including brake assembly, the brake assembly is arranged in the side of one of fixed frame, the tubular motor body is connected with brake disc away from the rotation structure of driving tubular motor body one end, the brake assembly is used for the brake mechanism of brake disc stopping rotation, the brake mechanism includes several brake blocks that can be contacted with brake disc inner wall, the brake assembly further includes the limiting mechanism for making brake block keep with brake disc inner wall contact. By setting the limiting structure, limiting mechanism can make brake block always contact with brake disc when braking, guarantee brake effect.

Description

Technical Field

[0001] This utility model relates to the field of tubular motor technology, specifically a tubular motor braking structure. Background Technology

[0002] In modern buildings and industrial facilities, roller shutters, as an important door control device, are widely used in commercial shops, warehouses, factories, garages, and other places. With their advantages of rapid opening, space saving, and high security, they have become a key element in ensuring the safety of people and property and improving space utilization efficiency. The tubular motor, as the core power unit driving the operation of the roller shutter, occupies a central position in the roller shutter system due to its compact structure, convenient installation, and smooth operation. The motor rotates, driving the roller shaft to rotate, thereby realizing the raising and lowering action of the roller shutter. However, in practical applications, the braking performance of the tubular motor has become one of the key factors affecting the overall safety and reliability of the roller shutter system.

[0003] Chinese invention patent application (publication number CN102182772A) discloses an improved structure for a tubular motor braking device, including a brake housing. Inside the brake housing, from front to back, are arranged a brake disc, an armature, and an electromagnet. The brake housing also has a manual braking device connected to the rear of the armature. The manual braking device includes a wire rope, a front handle, and a rear handle. The rear end of the front handle is threaded to the rear handle. One end of the wire rope is fixed to the rear of the armature, and the other end passes through the front handle and is fixed to the rear handle. A spring is also sleeved between the wire rope and the electromagnet. The electromagnet drives the armature to contact the brake disc, and the friction pads on the armature generate resistance against the brake disc, causing the brake disc to stop, thereby stopping the tubular motor.

[0004] The existing technology uses an electromagnet-driven braking structure. Its working principle is as follows: an electromagnet, when energized, generates a magnetic field that drives an armature towards the brake disc, causing friction pads mounted on the armature to make close contact with the brake disc. The frictional resistance between the two resists the rotation of the brake disc, thus braking the tubular motor and stopping the roller shutter at the desired position. However, this electromagnet-driven braking structure has significant drawbacks in practical applications. The operating characteristics of the electromagnet dictate that a continuous power supply is required to maintain sufficient magnetic force to ensure stable contact pressure and frictional resistance between the friction pads and the brake disc during the contact process. Once the power supply is stopped, the electromagnet's magnetic force disappears, and the armature, under the action of spring return force or other reaction forces, will separate from the brake disc, or the contact pressure between them will decrease significantly, leading to a sharp drop in friction and the loss of braking effect. The roller shutter may then fall uncontrollably due to the loss of braking. Utility Model Content

[0005] The purpose of this utility model is to provide a tubular motor braking structure. By setting a limiting structure, the limiting mechanism can ensure that the brake block is always in contact with the brake disc during braking, thus ensuring the braking effect.

[0006] To address the problems of existing technologies, this utility model provides a tubular motor braking structure, which is installed on a tubular motor body for braking the tubular motor body. The tubular motor body has fixing frames on both sides for supporting it, and includes a braking assembly. The braking assembly is disposed on the side of one of the fixing frames. A brake disc is connected to the end of the tubular motor body away from the structure driving the rotation of the tubular motor body. The braking assembly is a braking mechanism for stopping the rotation of the brake disc. The braking mechanism includes several brake blocks that can contact the inner wall of the brake disc. The braking assembly also includes a limiting mechanism for keeping the brake blocks in contact with the inner wall of the brake disc.

[0007] Preferably, the braking assembly includes a support frame fixed to the side of the fixing frame, the braking mechanism includes a protective shell disposed inside the support frame, the braking assembly further includes a second connecting rod slidably disposed on the protective shell and in contact with the brake block, the end of the second connecting rod away from the brake block is connected to a connecting block, and the braking assembly further includes a driving mechanism for driving the brake block to move closer to or away from the inner wall of the brake disc.

[0008] Preferably, the braking mechanism further includes a return spring sleeved outside the second connecting rod, one end of the return spring contacting the inner side of the protective shell, and the other end of the return spring being connected to the connecting block.

[0009] Preferably, the driving mechanism includes a movable member capable of reciprocating and contacting the connecting block. The side of the connecting block near the protective shell is set as an inclined surface. The movable member is frustum-shaped, and the side of the movable member can cooperate with the inclined surface of the connecting block.

[0010] Preferably, the driving mechanism further includes a telescopic driving member fixed to the outside of the support frame, and the output end of the telescopic driving member is connected to a first connecting rod, and one end of the first connecting rod is connected to the moving member. The side of the first connecting rod is also provided with a slot, and the limiting mechanism is used to restrict the movement of the first connecting rod.

[0011] Preferably, the limiting mechanism includes a limiting block that can be fixed inside the protective shell and can move within the protective shell.

[0012] Preferably, the limiting mechanism further includes a guide rod disposed on the limiting block, and the limiting mechanism further includes an electromagnet fixed in the protective shell and driving the limiting block to move.

[0013] Preferably, the limiting mechanism further includes a thrust spring sleeved on the guide rod and enabling the limiting block to remain inserted into the slot.

[0014] The advantages of this application compared to the prior art are:

[0015] 1. In use, this application employs a limiting mechanism to ensure the stability of the braking effect. The limiting mechanism includes a limiting block and a thrust spring, wherein the limiting block can be inserted into a slot. The thrust spring is designed to continuously apply force to the limiting block, ensuring that the limiting block remains inserted in the slot. The advantage of this structural design is that even in abnormal situations such as power failure, the brake block can maintain close contact with the brake disc, effectively avoiding the problem of loss of braking effect due to a sharp decrease in friction, thereby significantly improving the safety and reliability of the device.

[0016] 2. Furthermore, this application achieves convenient braking of the tubular motor through the coordinated action of the drive mechanism and the braking mechanism. Specifically, when braking is required, the telescopic drive is activated, which drives the first connecting rod to move, thereby driving the moving component to move. Due to the specific contact relationship between the moving component and the inclined surface of the connecting block, the movement of the moving component causes the connecting block to drive the second connecting rod to move, ultimately making the brake block tightly contact the inner wall of the brake disc, thereby achieving effective braking of the tubular motor. This braking structure is not only easy to operate but also compact in structure, possessing high practicality and economy. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the braking component of a tubular motor braking structure of this utility model when combined with the tubular motor body.

[0018] Figure 2 This is a first three-dimensional structural diagram of a braking component of a tubular motor braking structure according to this utility model.

[0019] Figure 3 This is a schematic diagram of the second three-dimensional structure of a braking component of a tubular motor braking structure according to this utility model.

[0020] Figure 4 This is a side view of the braking assembly of a tubular motor braking structure according to this utility model.

[0021] Figure 5 This is a first exploded structural diagram of the braking assembly of a tubular motor braking structure according to this utility model.

[0022] Figure 6 This is a second exploded structural diagram of the braking assembly of a tubular motor braking structure according to this utility model.

[0023] Figure 7 This utility model relates to a tubular motor braking structure. Figure 6 Enlarged structural diagram at point A in the middle.

[0024] The following are the labels in the diagram: 1. Tubular motor body; 11. Brake disc; 2. Fixing frame; 3. Braking assembly; 31. Support frame; 32. Drive mechanism; 321. Telescopic drive component; 322. Moving component; 3221. First connecting rod; 3222. Slot; 33. Braking mechanism; 331. Brake block; 3311. Second connecting rod; 3312. Return spring; 3313. Connecting block; 332. Protective shell; 34. Limiting mechanism; 341. Electromagnet; 342. Limiting block; 343. Thrust spring; 344. Guide rod. Detailed Implementation

[0025] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0026] Reference Figures 1-7 As shown, this utility model provides a tubular motor braking structure, which is installed on the tubular motor body 1 for braking the tubular motor body 1. The tubular motor body 1 has fixing frames 2 on both sides for supporting the tubular motor body 1. The structure includes a braking assembly 3, which is disposed on the side of one of the fixing frames 2. A brake disc 11 is connected to the end of the tubular motor body 1 away from the structure that drives the tubular motor body 1 to rotate. The braking assembly 3 is a braking mechanism 33 for stopping the rotation of the brake disc 11. The braking mechanism 33 includes a plurality of brake blocks 331 that can contact the inner wall of the brake disc 11. The braking assembly 3 also includes a limiting mechanism 34 for keeping the brake blocks 331 in contact with the inner wall of the brake disc 11.

[0027] When braking of the tubular motor body 1 is required, the braking mechanism 33 in the braking assembly 3 is activated. The brake block 331 in the braking mechanism 33 contacts the inner wall of the brake disc 11, and due to friction, the brake disc 11 stops rotating. At the same time, the limiting mechanism 34 ensures that the brake block 331 always remains in contact with the inner wall of the brake disc 11, maintaining the braking effect even in the event of a power outage. In this way, the tubular motor body 1 is effectively braked.

[0028] The braking assembly 3 includes a support frame 31 fixed on the side of the fixed frame 2, and the braking mechanism 33 includes a protective shell 332 disposed inside the support frame 31. The braking assembly 3 also includes a second connecting rod 3311 slidably disposed on the protective shell 332 and in contact with the brake block 331. The end of the second connecting rod 3311 away from the brake block 331 is connected to a connecting block 3313. The braking assembly 3 also includes a driving mechanism 32 for driving the brake block 331 to move closer to or away from the inner wall of the brake disc 11.

[0029] The braking mechanism 33 also includes a return spring 3312 sleeved outside the second connecting rod 3311. One end of the return spring 3312 contacts the inner side of the protective shell 332, and the other end of the return spring 3312 is connected to the connecting block 3313. The driving mechanism 32 includes a moving member 322 that can reciprocate and contact the connecting block 3313. The side of the connecting block 3313 near the protective shell 332 is set as an inclined surface. The moving member 322 is frustum-shaped, and the side of the moving member 322 can cooperate with the inclined surface of the connecting block 3313.

[0030] When braking of the tubular motor body 1 is required, the drive mechanism 32 is activated, and the moving part 322 begins to reciprocate. Since the frustum-shaped side of the moving part 322 engages with the inclined surface of the connecting block 3313, the moving part 322 pushes the connecting block 3313 during its movement, thereby causing the second connecting rod 3311 and the brake block 331 to move towards the inner wall of the brake disc 11. When the brake block 331 contacts the inner wall of the brake disc 11 and generates friction, the brake disc 11 stops rotating, thus braking the tubular motor body 1. When it is necessary to release the brake, the drive mechanism 32 causes the moving part 322 to move in the opposite direction, at which point the return spring 3312 begins to function. Since one end of the return spring 3312 contacts the inner side of the protective shell 332 and the other end is connected to the connecting block 3313, the return spring 3312 pulls the connecting block 3313, the second connecting rod 3311, and the brake block 331 away from the inner wall of the brake disc 11, thus resetting the braking mechanism 33.

[0031] The drive mechanism 32 also includes a telescopic drive member 321 fixed to the outside of the support frame 31, and the output end of the telescopic drive member 321 is connected to a first connecting rod 3221. One end of the first connecting rod 3221 is connected to the moving member 322. A slot 3222 is also provided on the side of the first connecting rod 3221. The limiting mechanism 34 is used to limit the movement of the first connecting rod 3221.

[0032] The limiting mechanism 34 includes a limiting block 342 that can be fixed inside the protective housing 332 and move within the protective housing 332. The limiting mechanism 34 also includes a guide rod 344 disposed on the limiting block 342, and an electromagnet 341 fixed within the protective housing 332 and driving the limiting block 342 to move. The limiting mechanism 34 further includes a thrust spring 343 sleeved on the guide rod 344 and enabling the limiting block 342 to remain inserted into the slot 3222.

[0033] During the operation of the drive mechanism 32, the limiting mechanism 34 restricts the movement range of the first connecting rod 3221. When the electromagnet 341 is energized, it generates a magnetic force that attracts the limiting block 342, causing it to exit the slot 3222, thus allowing the first connecting rod 3221 to move freely. When the electromagnet 341 is de-energized, the thrust spring 343 pushes the limiting block 342 into the slot 3222, restricting the movement of the first connecting rod 3221, thereby ensuring that the brake block 331 remains in contact with the inner wall of the brake disc 11. Even if the drive mechanism 32 malfunctions or is de-energized, the limiting mechanism 34 can still ensure that the brake block 331 remains in contact with the brake disc 11.

[0034] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A tubular motor braking structure, mounted on a tubular motor body (1) for braking the tubular motor body (1), wherein the tubular motor body (1) has fixing frames (2) on both sides for supporting the tubular motor body (1), characterized in that: The device includes a braking assembly (3), which is disposed on the side of one of the fixed frames (2). The end of the tubular motor body (1) away from the structure that drives the tubular motor body (1) to rotate is connected to a brake disc (11). The braking assembly (3) is a braking mechanism (33) for stopping the rotation of the brake disc (11). The braking mechanism (33) includes a plurality of brake blocks (331) that can contact the inner wall of the brake disc (11). The braking assembly (3) also includes a limiting mechanism (34) for keeping the brake blocks (331) in contact with the inner wall of the brake disc (11).

2. The tubular motor braking structure according to claim 1, characterized in that: The braking assembly (3) includes a support frame (31) fixed on the side of the fixing frame (2), the braking mechanism (33) includes a protective shell (332) disposed inside the support frame (31), the braking assembly (3) also includes a second connecting rod (3311) slidably disposed on the protective shell (332) and in contact with the brake block (331), the end of the second connecting rod (3311) away from the brake block (331) is connected to a connecting block (3313), the braking assembly (3) also includes a driving mechanism (32) for driving the brake block (331) to move closer to or away from the inner wall of the brake disc (11).

3. The tubular motor braking structure according to claim 1, characterized in that: The braking mechanism (33) also includes a return spring (3312) sleeved outside the second connecting rod (3311). One end of the return spring (3312) contacts the inner side of the protective shell (332), and the other end of the return spring (3312) is connected to the connecting block (3313).

4. The tubular motor braking structure according to claim 2, characterized in that: The drive mechanism (32) includes a movable part (322) that can reciprocate and contact the connecting block (3313). The side of the connecting block (3313) near the protective shell (332) is set as an inclined surface. The movable part (322) is frustum-shaped. The side of the movable part (322) can cooperate with the inclined surface of the connecting block (3313).

5. The tubular motor braking structure according to claim 4, characterized in that: The drive mechanism (32) also includes a telescopic drive member (321) fixed on the outside of the support frame (31), and the output end of the telescopic drive member (321) is connected to a first connecting rod (3221), and one end of the first connecting rod (3221) is connected to the moving member (322). The side of the first connecting rod (3221) is also provided with a slot (3222), and the limiting mechanism (34) is used to limit the movement of the first connecting rod (3221).

6. The tubular motor braking structure according to claim 5, characterized in that: The limiting mechanism (34) includes a limiting block (342) that can be fixed inside the protective shell (332) and can move within the protective shell (332).

7. A tubular motor braking structure according to claim 6, characterized in that: The limiting mechanism (34) also includes a guide rod (344) disposed on the limiting block (342), and the limiting mechanism (34) also includes an electromagnet (341) fixed in the protective shell (332) and driving the limiting block (342) to move.

8. The tubular motor braking structure according to claim 7, characterized in that: The limiting mechanism (34) also includes a thrust spring (343) sleeved on the guide rod (344) and enabling the limiting block (342) to be held inserted into the slot (3222).

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