Brake mechanism of reduction gearbox

Abstract

The brake mechanism comprises a fixing sleeve, an input disc, an output disc and a spring, the fixing sleeve is of a circular tubular structure, the input disc and the output disc are rotationally connected to the two ends of the fixing sleeve respectively, the spring is located between the input disc and the output disc, and the outer wall of the spring is tightly attached to the inner wall of the fixing sleeve. The tail ends of the two ends of the spring are each provided with a bent part bent inwards, a first clamping part is arranged on the side, close to the middle of the fixing sleeve, of the input disc, the first clamping part is close to the inner wall of the spring and located between the arc-shaped intervals of the inner side faces of the bent parts at the two ends, and a second clamping part is arranged on the side, close to the middle of the fixing sleeve, of the output disc. The second clamping part is close to the inner wall of the spring and located between the arc-shaped intervals of the outer side faces of the bent parts at the two ends. The brake mechanism of the reduction gearbox has a brake function, can be used in cooperation with a brush motor or a brushless motor, is high in universality, and reduces the dependence on the braking force of a motor core.

Description

Technical Field

[0001] The utility model relates to the technical field of reduction boxes, in particular to a brake mechanism of a reduction box. Background Art

[0002] With the development of industry, motors are used more and more widely in various industries and occasions. During use, motors usually need to be used with a reduction gearbox. Some common reduction gearboxes do not have the function of braking, so they mainly rely on the braking force of the motor core. The inherent braking force of the brushed motor core is greater than that of the brushless motor core. Therefore, the reduction gearbox equipped with a brushed motor can basically meet the braking requirements, while the brushless motor cannot meet them. Therefore, there are certain defects. Utility Model Content

[0003] The utility model aims to provide a brake mechanism of a reduction box, which has a braking function and can be used in conjunction with a brushed motor or a brushless motor, has high versatility, and reduces dependence on the braking force of a motor core.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A brake mechanism of a reduction gearbox is provided, comprising: a fixed sleeve, an input disc, an output disc and a spring, wherein the fixed sleeve is a circular tubular structure, the input disc and the output disc are rotatably connected to the two ends of the fixed sleeve respectively, the spring is located between the input disc and the output disc, and the outer wall of the spring is tightly attached to the inner wall of the fixed sleeve, and the ends of the spring are respectively provided with inwardly bent portions, a first clamping portion is provided on a side of the input disc close to the middle of the fixed sleeve, the first clamping portion is close to the inner wall of the spring, and is located between the arc-shaped spacings of the inner sides of the bent portions at both ends, and a second clamping portion is provided on a side of the output disc close to the middle of the fixed sleeve, the second clamping portion is close to the inner wall of the spring, and is located between the arc-shaped spacings of the outer sides of the bent portions at both ends.

[0006] As a preferred solution for the brake mechanism of the reduction gearbox, a cylindrical mounting portion is arranged at the center of one side of the output disk close to the middle of the fixed sleeve, the second clamping portion is arranged on the outer periphery of the mounting portion, a cylindrical connecting head is arranged at the center of one end of the mounting portion close to the input disk, a connecting hole for connecting the connecting head is arranged at the center of the input disk, and the connecting head is rotatably connected to the connecting hole.

[0007] As a preferred solution for the brake mechanism of the reduction gearbox, the arc spacing of the inner side surfaces of the bending portions at both ends is greater than the arc spacing of the outer side surfaces.

[0008] As a preferred solution of the brake mechanism of the reduction gearbox, the number of the first clamping parts is two, and they are symmetrically distributed on one side of the input disc close to the middle of the fixing sleeve.

[0009] As a preferred solution of the brake mechanism of the reduction box, latch teeth are evenly distributed on the outer circumference of the fixing sleeve.

[0010] As a preferred solution of the brake mechanism of the reduction gearbox, an input connecting portion is provided on a side of the input disc away from the fixing sleeve.

[0011] As a preferred solution of the brake mechanism of the reduction box, an output connecting portion is provided on a side of the output disc away from the fixing sleeve.

[0012] The beneficial effects of the utility model are as follows: the brake mechanism of the reduction gearbox proposed by the utility model is provided with a spring tightly attached to the inner wall of the fixed sleeve, and the two ends of the spring are respectively provided with a bending part, and the input disc and the output disc are respectively provided with a first clamping part and a second clamping part. During operation, when the motor drives the input disc to rotate, the input disc drives the output disc to rotate through the cooperation of the first clamping part and the second clamping part. At the same time, the first clamping part drives the spring to rotate on the inner side surface of the bent part. Under the action of the friction force between the spring and the inner wall of the fixed sleeve, the spring shrinks inwardly, reducing the friction force between the spring and the inner wall of the fixed sleeve, so that the input disc can smoothly drive the output disc to rotate; when the motor stops driving the input disc to rotate, the external load will drive the output disc to continue to rotate, and the second clamping part of the output disc will support the outer side surface of the bent part, thereby driving the spring to expand outward, increasing the friction force between the spring and the inner wall of the fixed sleeve, thereby realizing the braking function. The utility model can be used in conjunction with a brushed motor or a brushless motor, has high versatility, and reduces the dependence on the braking force of the motor core. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for use in the embodiments of the present utility model. Obviously, the drawings described below are only some embodiments of the present utility model, and for ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work.

[0014] Figure 1 It is a structural schematic diagram of the brake mechanism of the reduction box according to an embodiment of the utility model;

[0015] Figure 2 It is a side sectional view of the brake mechanism of the reduction box according to one embodiment of the utility model;

[0016] Figure 3 It is a schematic diagram of the internal structure of the brake mechanism of the reduction box according to one embodiment of the utility model when the fixing sleeve is not installed;

[0017] Figure 4 It is a semi-exploded diagram of the internal structure of the brake mechanism of the reduction box according to one embodiment of the utility model when the fixing sleeve is not installed;

[0018] Figure 5 This is a completely exploded view of the internal structure of the brake mechanism of the reduction box according to one embodiment of the utility model when the fixing sleeve is not installed;

[0019] In the figure:

[0020] 1. Fixed sleeve; 101. Clamping teeth; 2. Input disk; 201. First clamping portion; 202. Connecting hole; 203. Input connecting portion; 3. Output disk; 301. Second clamping portion; 302. Mounting portion; 303. Connecting head; 304. Output connecting portion; 4. Spring; 401. Bending portion. DETAILED DESCRIPTION

[0021] The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0022] The following describes the embodiments of the present disclosure through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present disclosure.

[0023] Reference Figure 1-5 An embodiment of the utility model provides a brake mechanism of a reduction gearbox, comprising: a fixed sleeve 1, an input disc 2, an output disc 3 and a spring 4, wherein the fixed sleeve 1 is a circular tubular structure, the input disc 2 and the output disc 3 are rotatably connected to the two ends of the fixed sleeve 1 respectively, the spring 4 is located between the input disc 2 and the output disc 3, and the outer wall of the spring 4 is tightly attached to the inner wall of the fixed sleeve 1, and the ends of the two ends of the spring 4 are respectively provided with inwardly bent portions 401, a first clamping portion 201 is provided on one side of the input disc 2 close to the middle of the fixed sleeve 1, the first clamping portion 201 is close to the inner wall of the spring 4, and is located between the arc-shaped spacing of the inner side surfaces of the bending portions 401 at both ends, and a second clamping portion 301 is provided on one side of the output disc 3 close to the middle of the fixed sleeve 1, the second clamping portion 301 is close to the inner wall of the spring 4, and is located between the arc-shaped spacing of the outer side surfaces of the bending portions 401 at both ends.

[0024] In the above technical solution, a spring 4 is provided which is closely attached to the inner wall of the fixing sleeve 1, and two ends of the spring 4 are respectively provided with a bending portion 401, and the input disk 2 and the output disk 3 are respectively provided with a first clamping portion 201 and a second clamping portion 301. During operation, when the motor drives the input disk 2 to rotate, the input disk 2 drives the output disk 3 to rotate through the cooperation of the first clamping portion 201 and the second clamping portion 301. At the same time, the first clamping portion 201 drives the spring 4 to rotate on the inner side surface of the bending portion 401. Under the friction between the spring 4 and the inner wall of the fixing sleeve 1, The spring 4 shrinks inward, reducing the friction between the spring 4 and the inner wall of the fixed sleeve 1, so that the input disk 2 can smoothly drive the output disk 3 to rotate; when the motor stops driving the input disk 2 to rotate, the external load will drive the output disk 3 to continue to rotate, and the second clamping portion 301 of the output disk 3 will support the outer side of the bent portion 401, thereby driving the spring 4 to expand outward, increasing the friction between the spring 4 and the inner wall of the fixed sleeve 1, thereby realizing the braking function. The utility model can be used in conjunction with a brushed motor or a brushless motor, has high versatility, and reduces dependence on the braking force of the motor core.

[0025] In some embodiments, a cylindrical mounting portion 302 is disposed at the center of one side of the output disk 3 close to the middle of the fixing sleeve 1, the second clamping portion 301 is disposed at the outer periphery of the mounting portion 302, a cylindrical connector 303 is disposed at the center of one end of the mounting portion 302 close to the input disk 2, a connecting hole 202 for the connector 303 is disposed at the center of the input disk 2, and the connector 303 is rotatably connected to the connecting hole 202. This structural design enables the input disk 2 to smoothly and stably drive the output disk 3 to rotate, and the structure is stable.

[0026] In some embodiments, the arc spacing of the inner side of the bending portion 401 at both ends is greater than the arc spacing of the outer side. Specifically, the number of the first clamping portions 201 is two, and they are symmetrically distributed on one side of the input disk 2 close to the middle of the fixing sleeve 1. This structural design makes the driving or braking of the output disk 3 more timely, accurate, and responsive.

[0027] In some embodiments, the outer circumference of the fixing sleeve 1 is evenly distributed with latch teeth 101. The latch teeth 101 enable the fixing sleeve 1 to be firmly fixed in the reduction box or reduction tube to prevent rotation.

[0028] In some embodiments, an input connection portion 203 is provided on a side of the input disc 2 away from the fixing sleeve 1. The input connection portion 203 is used for stable connection with the output end of the motor.

[0029] In some embodiments, an output connection portion 304 is provided on a side of the output disk 3 away from the fixing sleeve 1. The output connection portion 304 is used for stable connection with the load end.

[0030] In the description of the present invention, it should be understood that the terms "middle", "length", "up", "down", "front", "back", "vertical", "horizontal", "inside", "outside", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In the present invention, unless otherwise clearly specified and limited, the first feature "on" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. "Multiple" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The above is only for explaining the implementation mode of the utility model and is not used to limit the utility model. For those skilled in the art, any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the utility model without creative work should be included in the protection scope of the utility model.

Claims

1. A brake mechanism of a reduction gearbox, characterized in that: include: A fixing sleeve (1), an input disc (2), an output disc (3) and a spring (4), wherein the fixing sleeve (1) is a circular tubular structure, the input disc (2) and the output disc (3) are rotatably connected to the two ends of the fixing sleeve (1), the spring (4) is located between the input disc (2) and the output disc (3), and the outer wall of the spring (4) is tightly attached to the inner wall of the fixing sleeve (1), and the ends of the two ends of the spring (4) are respectively provided with inwardly bent portions (401), the input disc ( 2) A first clamping portion (201) is provided on one side close to the middle of the fixing sleeve (1), the first clamping portion (201) is close to the inner wall of the spring (4), and is located between the arc-shaped spacings of the inner side surfaces of the bending portions (401) at both ends; a second clamping portion (301) is provided on one side close to the middle of the fixing sleeve (1), the second clamping portion (301) is close to the inner wall of the spring (4), and is located between the arc-shaped spacings of the outer side surfaces of the bending portions (401) at both ends.

2. The brake mechanism of the reduction gearbox according to claim 1, characterized in that: A cylindrical mounting portion (302) is arranged at the center of one side of the output disk (3) close to the middle of the fixing sleeve (1); the second clamping portion (301) is arranged on the outer periphery of the mounting portion (302); a cylindrical connecting head (303) is arranged at the center of one end of the mounting portion (302) close to the input disk (2); a connecting hole (202) for connecting to the connecting head (303) is arranged at the center of the input disk (2); and the connecting head (303) is rotatably connected to the connecting hole (202).

3. The brake mechanism of the reduction gearbox according to claim 1, characterized in that: The arc spacing of the inner side surfaces of the bending portions (401) at both ends is greater than the arc spacing of the outer side surfaces.

4. The brake mechanism of the reduction gearbox according to claim 3, characterized in that: The number of the first clamping portions (201) is two, and they are symmetrically distributed on one side of the input disc (2) close to the middle of the fixing sleeve (1).

5. The brake mechanism of the reduction gearbox according to claim 1, characterized in that: The outer circumference of the fixing sleeve (1) is evenly distributed with latch teeth (101).

6. The brake mechanism of the reduction gearbox according to claim 1, characterized in that: An input connection portion (203) is provided on a side of the input disc (2) away from the fixing sleeve (1).

7. The brake mechanism of the reduction gearbox according to claim 1, characterized in that: An output connection portion (304) is provided on a side of the output disc (3) away from the fixing sleeve (1).

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