Damping ratchet mechanism

Abstract

The utility model belongs to the technical field of damping ratchet wheels, and discloses a damping ratchet wheel mechanism which comprises a ratchet wheel body, a containing cavity is formed in the ratchet wheel body, a rotating plate and a telescopic piece are arranged in the containing cavity, the rotating plate is rotationally connected into the containing cavity, and the telescopic piece is slidably connected into the containing cavity. A motor shaft avoiding hole is formed in one end of the ratchet wheel main body; a plurality of balls are evenly embedded in the end, close to the telescopic part, of the rotating plate, a plurality of spherical limiting grooves located in the same circular ring are evenly formed in the end, close to the rotating plate, of the telescopic part, the depth of the spherical limiting grooves is not larger than the radius of the balls, and the end, away from the rotating plate, of each ball is arranged in the corresponding spherical limiting groove in a matched mode; the other end of the telescopic piece is elastically connected with the other end of the containing cavity, and the elastic telescopic amount of the telescopic piece in the containing cavity is not smaller than the depth of the spherical limiting groove. According to the utility model, the motor can be prevented from being damaged, the turning cover can be wrenched by means of manpower, and the turning cover can be opened without dismounting the motor.

Description

Technical Field

[0001] The utility model belongs to the technical field of damping ratchets, and particularly relates to a damping ratchet mechanism. Background Art

[0002] In the detection applications such as electronics and memory modules, a switch cover mechanism is used, that is, a motor is directly connected to control the flipping of a flip cover with a detection device inside within a certain angle. When the flip cover controlled by the motor flips downward to a certain angle, the electronic device or memory module, etc. is detected, and then the motor controls the flip cover to flip upward to complete a detection process. Among them, an inductor electrically connected to the motor can also be installed. The inductor is used to sense the flipping angle of the flip cover. When the flip cover flips downward to a specified angle, the inductor feeds back a signal to the motor, and the motor stops running. However, this structure has the following problems in actual operation:

[0003] 1. When the inductor fails and does not receive the signal that the flip cover has flipped downward in place, the motor will keep driving the flip cover to move, but in fact, the flip cover cannot move any further in terms of structure. At this time, it may cause the motor to burn out, the output shaft to break, and the gears in the front gearbox of the motor to be damaged.

[0004] 2. When the motor is used beyond its service life or is abnormally damaged, the flip cover mechanism cannot be opened, and the flip cover needs to be removed after the entire mechanism is disassembled. Content of the Utility Model

[0005] The purpose of the utility model is to provide a damping ratchet mechanism to solve the above problems existing in the prior art.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A damping ratchet mechanism includes a ratchet main body. An accommodation cavity is provided inside the ratchet main body. A rotating plate and a telescopic member are arranged in the accommodation cavity in sequence from one end to the other end along the length direction of the ratchet main body. The rotating plate is rotatably connected to the accommodation cavity, and the telescopic member is slidably connected to the accommodation cavity. One end of the ratchet main body is provided with a motor shaft avoidance hole communicating with one end of the accommodation cavity to facilitate the motor shaft of the motor to pass through the motor shaft avoidance hole and be connected to the rotating plate. A plurality of balls located on the same circular ring are evenly embedded at one end of the rotating plate close to the telescopic member. A plurality of spherical limiting grooves located on the same circular ring are evenly formed at one end of the telescopic member close to the rotating plate. The depth of the spherical limiting grooves is not greater than the radius of the balls. One end of each ball away from the rotating plate is correspondingly arranged in a spherical limiting groove. The other end of the telescopic member is elastically connected to the other end of the accommodation cavity, and the elastic telescopic amount of the telescopic member in the accommodation cavity is not less than the depth of the spherical limiting grooves.

[0008] As a preferred technical solution in the present utility model, the ratchet main body includes an end cover, a housing, and a spring pressing piece. The accommodation cavity is arranged inside the housing. The end cover is installed at one end of the housing, and the spring pressing piece is installed at the other end of the housing. The motor shaft avoidance hole is arranged in the middle of the end cover, and the other end of the telescopic member is elastically connected to the spring pressing piece through a spring.

[0009] As a preferred technical solution in the present utility model, the accommodation cavity includes a long strip installation hole opened at one end of the housing and a plurality of spring installation holes communicating the long strip installation hole and the other end of the housing. The rotating plate and the telescopic member are both installed in the long strip installation hole, and a spring is installed in each spring installation hole. The two ends of the spring are respectively abutted against the spring pressing piece and the telescopic member.

[0010] As a preferred technical solution in the present utility model, at least one long strip limiting hole communicating the long strip installation hole and the other end of the housing is opened at the other end of the housing. At least one guiding pin is connected to the other end of the telescopic member, and each guiding pin is slidably connected in a long strip limiting hole.

[0011] As a preferred technical solution in the present utility model, a flip cover connection hole facilitating connection with a flip cover through a connection shaft is opened in the middle of the other end of the housing.

[0012] As a preferred technical solution in the present utility model, a plurality of first bolt connection holes facilitating connection with the housing through bolts are opened on the end cover.

[0013] As a preferred technical solution in the present utility model, a plurality of second bolt connection holes facilitating connection with the housing through bolts are opened on the spring pressing piece.

[0014] As a preferred technical solution in the present utility model, a motor connection hole facilitating connection with the motor shaft of the motor is opened in the middle of the rotating plate.

[0015] Beneficial effects: Inside the ratchet main body of the present utility model, a rotating plate and a telescopic member that are relatively connected by elastic force are provided. The rotating plate is rotatably connected to the accommodation cavity to maintain flexibility, and the telescopic member is slidably connected to the accommodation cavity, and can thus rotate synchronously with the ratchet main body. In practice, the rotating plate is connected to the motor, and the ratchet main body is connected to the flip cover. In this way, it can be ensured that usually, the motor can be used to drive the rotation of the ratchet main body, and thus the flip cover can be driven to perform reciprocating flipping. If the sensor fails and the flip cover contacts the electronic components to be detected while the motor is still rotating, the rotating plate can use the ball to push the telescopic member to slide towards the other end of the accommodation cavity. After the ball disengages from the spherical limiting groove at one end of the telescopic member, the rotating plate can rotate relative to the telescopic member and the ratchet main body, thereby avoiding damage to the motor. When the motor itself exceeds its lifespan or is abnormally damaged, the flip cover can be manually turned, causing the telescopic member and the ratchet main body to rotate relative to the rotating plate, and the flip cover can be opened without removing the motor. Brief Description of the Drawings

[0016] Figure 1 is an exploded view of the present utility model;

[0017] Figure 2 is a cross-sectional view of the present utility model;

[0018] Figure 3 is a structural schematic diagram of the telescopic member in the present utility model;

[0019] Figure 4 is a structural schematic diagram of the rotating plate in the present utility model.

[0020] In the figure: 1 - rotating plate; 2 - telescopic member; 201 - spherical limiting groove; 3 - ball; 4 - end cover; 5 - outer shell; 501 - spring mounting hole; 6 - spring pressing piece; 7 - spring; 8 - guide pin. Detailed Embodiment

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the present utility model in combination with the drawings and the descriptions of the embodiments or the prior art. Obviously, the following descriptions of the structures of the drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. It should be noted here that the descriptions of these embodiments are used to help understand the present utility model, but do not constitute a limitation to the present utility model.

[0022] Embodiment:

[0023] As Figures 1-4As shown in the figure, this embodiment provides a damping ratchet mechanism, which includes a ratchet main body. An accommodation cavity is formed inside the ratchet main body. Inside the accommodation cavity, a rotating plate 1 and a telescopic member 2 are sequentially arranged from one end to the other end in the length direction of the ratchet main body. The rotating plate 1 is rotatably connected inside the accommodation cavity, and the telescopic member 2 is slidably connected inside the accommodation cavity. By the restraint of the ratchet main body on the rotating plate 1 and the telescopic member 2, the stability of the two is ensured. One end of the ratchet main body is provided with a motor shaft avoidance hole communicating with one end of the accommodation cavity, so that the motor shaft of the motor can pass through the motor shaft avoidance hole and be connected to the rotating plate 1, and the rotation of the rotating plate 1 is controlled by the motor. In practice, by connecting the ratchet main body with the flip cover, the damping ratchet mechanism can be used for transmission to realize the flip control of the flip cover by the motor. A plurality of balls 3 located on the same circular ring are evenly embedded at one end of the rotating plate 1 close to the telescopic member 2. The circular ring where the plurality of balls 3 are located is coaxially arranged with the motor shaft of the motor. A plurality of spherical limit grooves 201 located on the same circular ring are evenly formed at one end of the telescopic member 2 close to the rotating plate 1. The depth of the spherical limit grooves 201 is not greater than the radius of the balls 3. One end of each ball 3 away from the rotating plate 1 is correspondingly arranged in a spherical limit groove 201. In this way, relative limitation can be formed between the rotating plate 1 and the telescopic member 2, ensuring that the rotation of the rotating plate 1 can drive the telescopic member 2 to rotate, and the rotation of the telescopic member 2 can drive the ratchet main body to rotate, and the rotation of the ratchet main body can drive the flip cover to flip. The other end of the telescopic member 2 is elastically connected to the other end of the accommodation cavity, so that when the telescopic member 2 slides towards the other end of the accommodation cavity, it will naturally be subject to an elastic resistance. This elastic resistance can ensure that the rotating plate 1 can normally drive the telescopic member 2 to rotate, and the elastic telescopic amount of the telescopic member 2 inside the accommodation cavity is not less than the depth of the spherical limit grooves 201. When the flip cover is stuck, if the motor continues to control the rotation of the rotating plate 1, the balls 3 at one end of the rotating plate 1 will rotate with the rotating plate 1, and will squeeze the telescopic member 2, causing the telescopic member 2 to slide towards the other end of the accommodation cavity, so that relative self-rotation can be realized inside the damping ratchet mechanism, effectively protecting the motor from being damaged. When the motor itself exceeds its service life or is abnormally damaged, the flip cover can also be manually toggled, causing the telescopic member 2 to rotate relative to the rotating plate 1 without the need to remove the whole unit.

[0024] Inside the ratchet main body of the present utility model, there are a rotating plate 1 and a telescopic member 2 that are relatively connected by an elastic force. The rotating plate 1 is rotatably connected to the accommodation cavity to maintain flexibility. The telescopic member 2 is slidably connected to the accommodation cavity and can thus rotate synchronously with the ratchet main body. In practice, the rotating plate 1 is connected to the motor, and the ratchet main body is connected to the flip cover. In this way, it can be ensured that usually, the motor can drive the ratchet main body to rotate, and thus drive the flip cover to perform reciprocating flipping. If the sensor fails and the flip cover touches the electronic components to be detected while the motor is still rotating, the rotating plate 1 can use the ball 3 to push the telescopic member 2 to slide towards the other end of the accommodation cavity. After the ball 3 disengages from the spherical limit groove 201 at one end of the telescopic member 2, the rotating plate 1 can rotate relative to the telescopic member 2 and the ratchet main body, thereby avoiding damage to the motor. When the motor itself exceeds its lifespan or is abnormally damaged, the flip cover can be manually toggled, causing the telescopic member 2 and the ratchet main body to rotate relative to the rotating plate 1, and the flip cover can be opened without removing the motor.

[0025] As a preferred implementation in this embodiment, it should be further noted that the ratchet main body includes an end cover 4, a housing 5, and a spring pressing piece 6. The accommodation cavity is arranged inside the housing 5, which can realize the overall disassembly and assembly, design and produce each component according to the actual situation, and reduce the production difficulty and cost. The end cover 4 is installed at one end of the housing 5, and the spring pressing piece 6 is installed at the other end of the housing 5. The motor shaft avoidance hole is arranged in the middle of the end cover 4. The other end of the telescopic member 2 is elastically connected to the spring pressing piece 6 through a spring 7. The spring 7 gives an elastic force to the telescopic member 2, which can ensure the relative connection between the telescopic member 2 and the rotating plate 1 usually. When the sensor fails or the motor fails, the existence of the spring 7 also allows the telescopic member 2 to slide in the accommodation cavity, thereby realizing the relative rotation between the rotating plate 1 and the telescopic member 2.

[0026] As a preferred implementation in this embodiment, it should be further noted that the accommodation cavity includes a long strip installation hole opened at one end of the housing 5 and a plurality of spring installation holes 501 connecting the long strip installation hole and the other end of the housing 5. The rotating plate 1 and the telescopic member 2 are both installed in the long strip installation hole. A spring 7 is installed in each spring installation hole 501. The two ends of the spring 7 are respectively abutted against the spring pressing piece 6 and the telescopic member 2, which can ensure the relative stability of the spring 7 and effectively control the sliding range of the telescopic member 2.

[0027] As a preferred implementation in this embodiment, it should be further noted that at least one long strip mounting hole is provided at the other end of the housing 5, and a long strip limiting hole communicating with the other end of the housing 5 is provided. At the other end of the telescopic member 2, at least one guide pin 8 is connected. Each guide pin 8 is slidably connected in a long strip limiting hole. In this way, the telescopic member 2 can be limited by the guide pin 8, so that the telescopic member 2 can only be slidably connected in the accommodation cavity, and at the same time, when the telescopic member 2 rotates, it can also drive the ratchet body to rotate together.

[0028] As a preferred implementation in this embodiment, it should be further noted that a flip cover connection hole for facilitating connection with the flip cover through a connecting shaft is provided in the middle of the other end of the housing 5, making the connection between the ratchet body and the flip cover more convenient.

[0029] As a preferred implementation in this embodiment, it should be further noted that a plurality of first bolt connection holes for facilitating the connection of the end cover 4 to the housing 5 through bolts are provided on the end cover 4. The connection is simple and stable, and it is also convenient for loading and unloading.

[0030] As a preferred implementation in this embodiment, it should be further noted that a plurality of second bolt connection holes for facilitating the connection of the spring pressing piece 6 to the housing 5 through bolts are provided on the spring pressing piece 6. The connection is simple and stable, and it is also convenient for loading and unloading.

[0031] As a preferred implementation in this embodiment, it should be further noted that a motor connection hole for facilitating the connection of the rotating plate 1 to the motor shaft of the motor is provided in the middle of the rotating plate 1, which can make the connection between the motor and the rotating plate 1 more convenient.

[0032] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A damping ratchet mechanism, characterized in that: The invention comprises a ratchet body, wherein a receiving cavity is provided inside the ratchet body, and a rotating plate (1) and a telescopic member (2) are arranged in sequence from one end to the other end in the length direction of the ratchet body, the rotating plate (1) is rotatably connected to the receiving cavity, and the telescopic member (2) is slidably connected to the receiving cavity; a motor shaft avoidance hole communicating with one end of the receiving cavity is provided at one end of the ratchet body, so that the motor shaft of the motor passes through the motor shaft avoidance hole and is connected to the rotating plate (1); a plurality of rotating plates (1) are evenly embedded at one end close to the telescopic member (2) The balls (3) are on the same circular ring; one end of the telescopic member (2) close to the rotating plate (1) is evenly provided with a plurality of spherical limiting grooves (201) located on the same circular ring; the depth of the spherical limiting groove (201) is not greater than the radius of the balls (3); one end of each ball (3) away from the rotating plate (1) is matched and arranged in a spherical limiting groove (201); the other end of the telescopic member (2) is elastically connected to the other end of the accommodating cavity; and the elastic expansion and contraction amount of the telescopic member (2) in the accommodating cavity is not less than the depth of the spherical limiting groove (201).

2. A damping ratchet mechanism according to claim 1, characterized in that: The ratchet body comprises an end cover (4), a shell (5) and a spring pressing plate (6); the accommodating cavity is arranged in the shell (5); the end cover (4) is installed at one end of the shell (5); and the spring pressing plate (6) is installed at the other end of the shell (5); the motor shaft avoidance hole is arranged in the middle of the end cover (4); and the other end of the telescopic member (2) is elastically connected to the spring pressing plate (6) through a spring (7).

3. A damping ratchet mechanism according to claim 2, characterized in that: The accommodating cavity comprises a long strip mounting hole opened at one end of the housing (5) and a plurality of spring mounting holes (501) connecting the long strip mounting hole and the other end of the housing (5); the rotating plate (1) and the telescopic member (2) are both mounted in the long strip mounting hole; a spring (7) is mounted in each spring mounting hole (501); and two ends of the spring (7) are respectively in contact with the spring pressing sheet (6) and the telescopic member (2).

4. A damping ratchet mechanism according to claim 3, characterized in that: The other end of the shell (5) is provided with at least one long limit hole connecting the long installation hole and the other end of the shell (5); the other end of the telescopic member (2) is connected with at least one guide pin (8); each guide pin (8) is slidably connected in a long limit hole.

5. A damping ratchet mechanism according to claim 3 or 4, characterized in that: A flap connection hole is provided in the middle of the other end of the housing (5) for facilitating connection with the flap via a connection shaft.

6. A damping ratchet mechanism according to any one of claims 2 to 4, characterized in that: The end cover (4) is provided with a plurality of first bolt connection holes for facilitating connection of the end cover (4) with the outer shell (5) via bolts.

7. A damping ratchet mechanism according to any one of claims 2 to 4, characterized in that: The spring pressing sheet (6) is provided with a plurality of second bolt connection holes for facilitating connection with the housing (5) via bolts.

8. A damping ratchet mechanism according to claim 1, characterized in that: A motor connection hole is provided in the middle of the rotating plate (1) for facilitating connection with the motor shaft of the motor.

Images