A jaw type brake device

Abstract

The present invention discloses a jaw-type brake device, which includes a driving mechanism, a top block mechanism and a tooth-shaped limiting mechanism; the driving mechanism enables the top block mechanism to reciprocate; a tooth-shaped limiting mechanism is provided on both sides of the top block mechanism, and the top block mechanism is used to change the distance between the tooth-shaped limiting mechanisms on both sides; the tooth-shaped limiting mechanism is used to brake the motor. By means of the driving mechanism, the top block mechanism reciprocates linearly within a certain range. Through the contact between the top block mechanism and different parts of the tooth-shaped limiting mechanism, a limit or release of the limit is formed between the tooth-shaped disc and the tooth-shaped block in the tooth-shaped limiting mechanism, thereby realizing the braking and release of the brake for the motor. The jaw-type brake device in the present invention improves the reliability of the brake, prevents the motor from running with large current, effectively protects the motor and related electrical components; the symmetrical structure design realizes the simultaneous braking of the tooth-shaped disc, improving the accuracy of braking; the overall size is small and can be embedded, saving space and improving the compactness of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of brake devices, and particularly to a jaw-type brake device. Background Art

[0002] Motor drive is the main drive mode in the fields of current intelligent manufacturing and robotics. It has strong reliability, fast response, stable output, low heat generation under rated load, and long service life. However, when there is a load and the motor is stationary, the motor needs to provide a large torque, and at this time, the output current is large, which is likely to cause the motor to overheat or even be damaged. If the electrical energy is provided by a battery pack, the battery life will be greatly shortened. Installing a mechanical brake system can provide braking when the load is stationary, effectively prevent the motor from being damaged, and significantly extend the battery life of the motor. In the prior art, the braking of the rotating shaft can be achieved by an external brake mechanism on the rotating shaft, which has a good braking effect on large equipment, but for small machinery, it will increase the volume of the entire equipment.

[0003] The existing brake devices use the method of friction to achieve the effect of motor braking. For example, in [CN203504383 U], a sufficient large friction force is generated between the spring pre-tightening force and the linear motor mover shaft to achieve the purpose of motor braking. It adopts the method of non-braking when powered on and braking when powered off. In the case of an accidental power outage externally, the motor is braked to ensure the safety of the equipment. However, in the case of a large external load, there is also a risk of insufficient braking when using friction. In [CN 107161806 A], a wire reel quick-stabilizing device is adopted, and the braking is achieved by a brake type. The expansion shaft is driven by the motor to expand and hold the inner hole of the wire reel to achieve braking. It also adopts the method of friction. The structural design is simple, but the braking performance is related to the strength of the friction, and there are certain risks. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a jaw-type brake device, which uses a toothed disk structure to achieve braking and static holding, improves the reliability of the device, avoids overheating and damage of the motor caused by continuous large current output, and improves the battery life of the device.

[0005] To achieve the above object, the present invention provides the following solution:

[0006] The present invention provides a jaw-type brake device, including a driving mechanism, a top block mechanism, and a toothed limit mechanism; the driving mechanism is used to make the top block mechanism reciprocate linearly; one toothed limit mechanism is respectively arranged on both sides of the top block mechanism, and the top block mechanism is used to change the distance between the toothed limit mechanisms on both sides; the toothed limit mechanism is used to brake the motor.

[0007] Optionally, the driving mechanism includes a power source, a connecting disk, and a connecting frame; the center of the connecting disk is in transmission connection with the output shaft of the power source, and the power source is used to drive the connecting disk to rotate circumferentially; one end of the connecting frame is rotatably connected to a non-center position of the connecting disk, and the other end of the connecting frame is used to connect to the top block mechanism.

[0008] Optionally, the top block mechanism includes a top block, and one end of the top block is rotatably connected to the driving mechanism; both sides of the top block are respectively in contact with one of the toothed limiting mechanisms.

[0009] Optionally, the top block mechanism further includes a fixed block and a fixed shaft; one end of the fixed shaft is connected to the fixed block, the other end of the fixed shaft extends into the top block, and the top block can slide along the fixed shaft.

[0010] Optionally, a first bearing is provided between the fixed shaft and the top block.

[0011] Optionally, the toothed limiting mechanism includes a toothed disk, a toothed block, and a guiding component; the toothed disk is arranged on a side of the toothed block away from the top block mechanism; a plurality of limiting teeth are arranged on a side of the toothed block facing the toothed disk and are matched with the toothed disk; the guiding component is used to keep the toothed block in contact with the top block mechanism and provide guidance during the movement of the toothed block; a guiding part is arranged on a side of the toothed block facing the top block assembly, when the top block assembly moves to the guiding part, the toothed block is engaged with the toothed disk, and when the top block assembly moves to a position outside the guiding part, the toothed block is disengaged from the toothed disk; the toothed disk is used to connect to the output shaft of the motor.

[0012] Optionally, the guiding component includes a fixed seat, a guiding shaft, and a return spring; one end of the guiding shaft is fixedly connected to the fixed seat, the other end of the guiding shaft extends into the toothed block, and the toothed block can slide along the guiding shaft, the return spring is sleeved on the guiding shaft, and one end of the return spring is in limiting connection with the guiding shaft, and the other end of the return spring is in contact with the toothed block.

[0013] Optionally, a second bearing is provided between the guiding shaft and the toothed block.

[0014] Optionally, one guiding component is respectively arranged at both ends of the toothed block.

[0015] Optionally, the guiding part includes a third bearing, the third bearing is rotatably arranged on a side of the toothed block facing the top block assembly, and the third bearing protrudes from the side of the toothed block facing the top block assembly.

[0016] The present invention has achieved the following technical effects compared with the prior art:

[0017] The jaw type brake device in the present invention mainly includes a driving mechanism, a top block mechanism, and a tooth-shaped limiting mechanism; through the driving mechanism, the top block mechanism reciprocates linearly within a certain range, and through the contact of different parts of the top block mechanism with the tooth-shaped limiting mechanism, a limit or release of the limit is formed between the tooth-shaped disk and the tooth-shaped block in the tooth-shaped limiting mechanism, so as to realize the braking and release of the motor. The jaw type brake device in the present invention improves the reliability of the brake, prevents the motor from running with a large current when lifting a heavy object and holding it, effectively protects the motor and related electrical components; the symmetric structure design realizes the simultaneous braking of the tooth-shaped disk, improving the accuracy of braking; the overall size is small, and it can be embedded when matching its size, greatly saving the design space and improving the compactness of the whole device. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of the jaw type brake device of the present invention;

[0020] Figure 2 It is an exploded schematic structural diagram of the jaw type brake device of the present invention;

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the jaw type brake device of the present invention.

[0022] Description of the reference numerals in the drawings: 1, driving mechanism; 2, top block mechanism; 3, tooth-shaped disk; 4, tooth-shaped limiting mechanism;

[0023] 11, servo motor; 12, fixed frame; 13, connecting disk; 14, connecting frame;

[0024] 21, top block; 22, fixed block; 23, fixed shaft; 24, first bearing;

[0025] 41, fixed seat; 42, guiding shaft; 43, return spring; 44, second bearing; 45, bolt shaft; 46, tooth-shaped block; 47, third bearing. Detailed Embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] As Figures 1 to 3 shown, this embodiment provides a jaw-type brake device, which includes a driving mechanism 1, a top block mechanism 2, and a tooth-shaped limiting mechanism 4; the driving mechanism 1 is used to make the top block mechanism 2 reciprocate linearly; on both sides of the top block mechanism 2, there is respectively one of the tooth-shaped limiting mechanisms 4, and the top block mechanism 2 is used to change the distance between the two tooth-shaped limiting mechanisms 4 on both sides; the tooth-shaped limiting mechanism 4 is used to brake the motor.

[0028] In this specific embodiment, the jaw-type brake device in this embodiment is mainly used for a rope-pulling upper limb assistive exoskeleton device, which is used to prevent the motor from running with a large current when holding a heavy object, and effectively protects the motor and related electrical components.

[0029] Specifically, the driving mechanism 1 includes a power source, a connecting disk 13, and a connecting frame 14; the center of the connecting disk 13 is in transmission connection with the output shaft of the power source, and the power source is used to drive the connecting disk 13 to rotate circumferentially; one end of the connecting frame 14 is rotatably connected to a non-center position of the connecting disk 13, and the other end of the connecting frame 14 is used to be connected to the top block mechanism 2. In this embodiment, the power source uses a servo motor 11, the servo motor 11 is installed on the fixing frame 12, the power output shaft of the servo motor 11 is connected to the center hole of the connecting disk 13, and the connecting disk 13 is provided with a through hole, and one end of the connecting frame 14 is connected to the through hole. Thus, when the servo motor 11 rotates, it drives the connecting disk 13 to rotate, makes one end of the connecting frame 14 swing, and drives the other end to move linearly.

[0030] The top block mechanism 2 includes a top block 21, and one end of the top block 21 is rotatably connected to the driving mechanism 1; both sides of the top block 21 are respectively in contact with one of the tooth-shaped limiting mechanisms 4. Further, on both sides of the top block 21, there are provided outwardly protruding extension parts, and guiding inclined surfaces are provided at both ends of the extension parts; the extension parts are used to be in direct contact with the side wall of the tooth-shaped block 46 or the third bearing 47. When the extension part is in contact with the third bearing 47, the tooth-shaped block 46 is engaged with the tooth-shaped disk 3, so that the motor is in a brake state. When the extension part is in contact with other parts of the tooth-shaped block 46, the tooth-shaped block 46 moves towards the top block 21, so that the tooth-shaped block 46 is disengaged from the tooth-shaped disk 3, and the brake on the tooth-shaped disk 3 is released, and then the motor can rotate.

[0031] The top block mechanism 2 further includes a fixed block 22 and a fixed shaft 23; one end of the fixed shaft 23 is connected to the fixed block 22, the other end of the fixed shaft 23 extends into the top block 21, and the top block 21 can slide along the fixed shaft 23. A first bearing 24 is provided between the fixed shaft 23 and the top block 21.

[0032] The toothed limit mechanism 4 includes a toothed disk 3, a toothed block 46 and a guiding assembly; the toothed disk 3 is arranged on the side of the toothed block 46 away from the top block mechanism 2; a plurality of limit teeth are arranged on the side of the toothed block 46 facing the toothed disk 3 and are matched with the toothed disk 3; the guiding assembly is used to keep the toothed block 46 in contact with the top block mechanism 2 and provide guidance during the movement of the toothed block 46; a guiding part is arranged on the side of the toothed block 46 facing the top block 21 assembly. When the top block 21 assembly moves to the guiding part, the toothed block 46 is engaged with the toothed disk 3. When the top block 21 assembly moves to a position outside the guiding part, under the action of the return spring 43, the toothed block 46 is disengaged from the toothed disk 3; the toothed disk 3 is used to be connected to the output shaft of the motor.

[0033] The guiding assembly includes a fixed seat 41, a guiding shaft 42 and a return spring 43; one end of the guiding shaft 42 is fixedly connected to the fixed seat 41, the other end of the guiding shaft 42 extends into the toothed block 46, and the toothed block 46 can slide along the guiding shaft 42. The return spring 43 is sleeved on the guiding shaft 42, and one end of the return spring 43 is connected to the guiding shaft 42 in a limited way, and the other end of the return spring 43 is in contact with the toothed block 46. A second bearing 44 is provided between the guiding shaft 42 and the toothed block 46. The guiding part includes a third bearing 47. The third bearing 47 is rotatably arranged on the side of the toothed block 46 facing the top block 21 assembly through a bolt shaft 45, and the third bearing 47 protrudes from the side of the toothed block 46 facing the top block 21 assembly.

[0034] One guiding assembly is arranged at each of the two ends of the toothed block 46. The toothed block 46 is designed with a symmetric structure. The two guiding assemblies on the same toothed block 46 are symmetrically arranged along the symmetry axis of the toothed block 46. The toothed limit mechanisms 4 on both sides of the top block 21 are symmetrically arranged along the axis of the top block 21, so as to realize the simultaneous braking of the toothed disk 3 and improve the braking accuracy.

[0035] It should be noted that for those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0036] In this specification, specific examples are used to illustrate the principles and implementation manners of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A jaw-type brake device, characterized in that It includes a driving mechanism, a top block mechanism and a toothed limit mechanism; the driving mechanism is used to make the top block mechanism reciprocate linearly; on both sides of the top block mechanism, there is respectively one of the toothed limit mechanisms, and the top block mechanism is used to change the distance between the toothed limit mechanisms on both sides; the toothed limit mechanism is used to brake the motor; The driving mechanism includes a power source, a connecting disk and a connecting frame; the center of the connecting disk is in transmission connection with the output shaft of the power source, and the power source is used to drive the connecting disk to rotate circumferentially; one end of the connecting frame is rotatably connected to a non-center position of the connecting disk, and the other end of the connecting frame is used to be connected to the top block mechanism; The top block mechanism includes a top block, and one end of the top block is rotatably connected to the driving mechanism; both sides of the top block are respectively in contact with one of the toothed limit mechanisms; The toothed limit mechanism includes a toothed disk, a toothed block and a guiding component; the toothed disk is arranged on the side of the toothed block away from the top block mechanism; on the side of the toothed block facing the toothed disk, there are a plurality of limit teeth arranged to match the toothed disk; the guiding component is used to keep the toothed block in contact with the top block mechanism and provide guidance during the movement of the toothed block; on the side of the toothed block facing the top block assembly, there is a guiding part. When the top block assembly moves to the guiding part, the toothed block is engaged with the toothed disk. When the top block assembly moves to a position outside the guiding part, the toothed block is disengaged from the toothed disk; the toothed disk is used to be connected to the output shaft of the motor.

2. The jaw-type brake device according to claim 1, characterized in that, The top block mechanism further includes a fixed block and a fixed shaft; one end of the fixed shaft is connected to the fixed block, and the other end of the fixed shaft extends into the top block, and the top block can slide along the fixed shaft.

3. The jaw-type brake device according to claim 2, characterized in that, A first bearing is arranged between the fixed shaft and the top block.

4. The jaw type brake device according to claim 1, characterized in that, The guiding component includes a fixed seat, a guiding shaft and a return spring; one end of the guiding shaft is fixedly connected to the fixed seat, and the other end of the guiding shaft extends into the toothed block, and the toothed block can slide along the guiding shaft. The return spring is sleeved on the guiding shaft, and one end of the return spring is in limit connection with the guiding shaft, and the other end of the return spring is in contact with the toothed block.

5. The jaw type brake device according to claim 4, characterized in that, A second bearing is arranged between the guiding shaft and the toothed block.

6. The jaw-type brake device according to claim 1, characterized in that, One guiding component is arranged at each end of the toothed block.

7. The jaw-type brake device according to claim 1, wherein The guiding part includes a third bearing, and the third bearing is rotatably arranged on the side of the toothed block facing the top block assembly, and the third bearing protrudes from the side of the toothed block facing the top block assembly.

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