Light sensation type torque limiting structure of tone arm of black glue machine

Abstract

The utility model discloses a black glue machine singing arm light sensation type torque limiting structure comprising a singing arm seat, a singing arm body rotatably connected on the singing arm seat and a motor used for driving the singing arm body to rotate, and a fan-shaped rotating plate is arranged at the bottom of the singing arm seat and is fixed at the bottom of a rotating core of the singing arm body. A fan-shaped rotating plate is arranged on the singing arm body, a baffle is arranged on the fan-shaped rotating plate, a plurality of optical coupling devices used for sensing the position of the baffle are arranged at the bottom of the singing arm seat, the optical coupling devices are connected to a motor to achieve rotary opening and closing of the singing arm body, and a movable base capable of installing the optical coupling devices and enabling the optical coupling devices to move is arranged on the singing arm seat. And a plurality of adjusting structures capable of adjusting the position of the movable base are arranged at the bottom of the singing arm seat. According to the utility model, the structure is simple, the baffle plate is sensed through the optocoupler device, the singing arm can start playing after playing a record, and the singing arm can stop after rotating for a certain distance, so that accurate control can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a record player field, especially a record player arm light sensing type rotation distance limiting structure. BACKGROUND

[0002] The record player is a machine specially used for analyzing the record, in use, the record is loaded on the machine, the machine head analyzes the record groove to realize the sound. The record player arm needs to put the head on the record, the head plays from the outer circle to the inner circle, so that the record plays all songs, in the process, the arm rotates a certain distance, when the record player plays the last song, it needs to stop accurately to avoid unnecessary time waste and long time idling of the record.

[0003] However, the rotation of the arm is not automatic, but follows the start of the drive to realize the rotation, so that the position of the arm start rotation and the end position are difficult to control, increasing the use difficulty. UTILITY MODEL CONTENT

[0004] In view of the defects of the prior art, the utility model solves the technical problem of providing a structure capable of limiting the rotation distance of the arm, which can limit the running distance of the arm through light sensing, so that the head automatically starts the rotation of the arm at the outer circle and automatically stops the movement of the arm at the inner circle, and the start and stop positions of the rotation of the arm can be adjusted.

[0005] In order to achieve the above purpose, the utility model provides the following scheme:

[0006] A record player arm light sensing type rotation distance limiting structure, comprising an arm base, a arm body rotatably connected on the arm base, and a motor for driving the arm body to rotate, a fan-shaped rotating plate is arranged at the bottom of the arm base and fixed to the bottom of the rotating core of the arm body, a baffle is arranged on the fan-shaped rotating plate, a plurality of light coupling devices for sensing the position of the baffle are arranged at the bottom of the arm base, the light coupling devices are connected to the motor to realize the start and stop of the rotation of the arm body, a movable base is arranged on the arm base and can be installed with the light coupling devices and movable, a plurality of adjustment structures for adjusting the position of the movable base are arranged at the bottom of the arm base.

[0007] Further, the center of the fan-shaped outer edge of the fan-shaped rotating plate is fixedly connected with the rotating core of the arm body, and the baffle is provided with a plurality of baffle plates and is distributed on the outer wall of the fan-shaped rotating plate.

[0008] Further, the light coupling device in the utility model comprises a light coupling plate, a U-shaped photosensitive sheet is arranged on the light coupling plate, and a light sensing sensor is arranged in the U-shaped photosensitive sheet.

[0009] Further, the light coupling plate electrically connects the motor, and the baffle is movable or separated from the U-shaped photosensitive sheet.

[0010] Further, the movable base comprises a sliding groove arranged at the bottom of the tone arm base, a sliding plate is slidably arranged at the bottom of the sliding groove, the light coupling plate is fixedly arranged at the bottom of the sliding plate, and a plurality of teeth are arranged in the sliding plate.

[0011] Further, the adjusting structure comprises an adjusting seat fixed on the bottom of the tone arm base by bolts, a limiting recess plate is arranged on the adjusting seat, the U-shaped photosensitive sheet is movably arranged in the limiting recess plate, an adjusting column is rotatably arranged in the adjusting seat, and a gear is arranged on the top of the adjusting column and engaged with the teeth.

[0012] In summary, the utility model has the advantages that:

[0013] After the tone arm is placed at the starting position of the outer circle of the record, the light coupling device senses the baffle, the motor is started to slowly rotate the tone arm, at this time, the record is played, and the baffle is separated from the light coupling device to stop when the record is played to the end of the inner circle of the record, so that the precise control is achieved. The position of the light coupling device can be adjusted by the adjusting structure to change the movable base, so that the starting position of the rotation of the tone arm can be adjusted, the starting and stopping positions of the rotation of the tone arm are arranged at the starting position of the outer circle and the end position of the inner circle of the record respectively according to the length of the baffle, the adjusting function is achieved, and the applicability is wider. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a perspective view of the utility model;

[0015] Figure 2 It is a bottom view of the utility model;

[0016] Figure 3 It is one of the perspective exploded views of the utility model;

[0017] Figure 4 It is the second perspective exploded view of the utility model;

[0018] Figure 5 It is the third perspective exploded view of the utility model. DETAILED DESCRIPTION

[0019] The utility model will be further described in combination with the description of the drawings and the specific implementation:

[0020] For example, Figures 1 to 5The embodiment of the utility model provides a black rubber record player arm light sensing type rotation distance limiting structure, including the armrest 1, the armrest 1 is rotatably connected with the arm body 11, and the motor 12 for driving the arm body 11 rotation is arranged, the fan-shaped rotating plate 2 is arranged on the bottom of the armrest 1 and is fixed to the rotating core bottom of the arm body 11, the baffle 21 is arranged on the fan-shaped rotating plate 2, a plurality of light coupling devices 3 for sensing the position of baffle 21 are arranged on the bottom of the armrest 1, the light coupling device 3 is connected to the motor 12 to realize the rotation start-stop of the arm body 11, the movable base 4 that can install light coupling device 3 and make it movable is arranged on the armrest 1, and the adjusting structure 5 that can adjust the position of movable base 4 is arranged on the bottom of the armrest 1.

[0021] The armrest is installed on the record player, the arm body can freely rotate and lift, and is used for placing the stylus on the record to play, and the technical scheme aims at automatically starting playing when the stylus on the arm body is placed on the outer circle of the record and automatically stopping when playing to the end.Specifically, after the stylus of the arm body is placed on the outer circle of the record, the motor is automatically started to control the slow rotation of the arm, so that the record is played, and during the playing, the baffle is in the starting of the sensing area of the light coupling device; when the stylus rotates to the inner circle position of the record, the record is played to the last song, the baffle just leaves the sensing area of the light coupling device, the rotation of the motor is cut off, and the record stops playing. Since the process of the baffle in the sensing area of the light coupling device is the playing state, the position of the light coupling device can be adjusted to change the starting and ending time of the stylus, and the adjusting structure can adjust the movable base to finely adjust the position of the light coupling device. The length of the baffle affects the rotation distance of the arm, since the size of the record is generally according to the national standard, therefore the length of the baffle should be equal to the distance from the outer circle to the inner circle of the stylus.

[0022] The technology realizes the start-stop of the arm through the light coupling device, and in actual use, the light coupling device can also cooperate with the record playing drive of the record player or the device allowing the arm to be electrically lifted, so that the rotation of the record is synchronized with the rotation of the arm to start or stop.

[0023] In the utility model, the center of the fan-shaped outer edge of the fan-shaped rotating plate 2 is fixedly connected with the rotating core of the arm body 11, and the baffle 21 is provided with a plurality of baffle and is distributed on the outer wall of the fan-shaped rotating plate 2. The fan-shaped rotating plate can rotate along with the rotation of the arm body, so that the baffle can enter or leave the sensing area of the light coupling device.

[0024] In the utility model, the light coupling device 3 comprises a light coupling plate 31, a U-shaped photosensitive sheet 32 is arranged on the light coupling plate 31, and a light sensing sensor is arranged in the U-shaped photosensitive sheet 32. The light coupling plate and the light sensing sensor are prior art. The top of the U-shaped photosensitive sheet is U-shaped, and the recessed position can be used for the baffle to enter.

[0025] The utility model discloses a motor 12 is connected to the photocoupler board 31, and the baffle 21 can move in or out from the U-shaped photosensitive sheet 32. The photocoupler board is used for controlling the U-shaped photosensitive sheet to start the motor after the baffle enters the sensing area through the light sensing sensor, makes the motor rotate at the stable speed, and closes the motor after sensing that the baffle separates from the sensing area.

[0026] The utility model discloses a motor 12 is connected to the photocoupler board 31, and the baffle 21 can move in or out from the U-shaped photosensitive sheet 32. The photocoupler board is used for controlling the U-shaped photosensitive sheet to start the motor after the baffle enters the sensing area through the light sensing sensor, makes the motor rotate at the stable speed, and closes the motor after sensing that the baffle separates from the sensing area.

[0027] The utility model discloses a motor 12 is connected to the photocoupler board 31, and the baffle 21 can move in or out from the U-shaped photosensitive sheet 32. The photocoupler board is used for controlling the U-shaped photosensitive sheet to start the motor after the baffle enters the sensing area through the light sensing sensor, makes the motor rotate at the stable speed, and closes the motor after sensing that the baffle separates from the sensing area.

[0028] The utility model discloses a motor 12 is connected to the photocoupler board 31, and the baffle 21 can move in or out from the U-shaped photosensitive sheet 32. The photocoupler board is used for controlling the U-shaped photosensitive sheet to start the motor after the baffle enters the sensing area through the light sensing sensor, makes the motor rotate at the stable speed, and closes the motor after sensing that the baffle separates from the sensing area.

Claims

1. A black rubber record player arm light sensing type rotation distance limiting structure, comprising a record player arm seat (1), a record player arm body (11) is rotatably connected on the record player arm seat (1), and a motor (12) for driving the record player arm body (11) to rotate, characterized in that: The fan-shaped rotating plate (2) is arranged at the bottom of the tone arm base (1) and fixed to the rotating core of the tone arm body (11), the baffle (21) is arranged on the fan-shaped rotating plate (2), a plurality of photocoupler devices (3) for sensing the position of the baffle (21) are arranged at the bottom of the tone arm base (1), the photocoupler devices (3) are connected to the motor (12) to realize the rotation start and stop of the tone arm body (11), the movable base (4) which can install the photocoupler devices (3) and make them movable is arranged on the tone arm base (1), and the adjusting structure (5) for adjusting the position of the movable base (4) is arranged at the bottom of the tone arm base (1).

2. A light sensing type rotation distance limiting structure for a black gel record player arm according to claim 1, characterized in that: The center of the fan-shaped outer edge of the fan-shaped rotating plate (2) is fixedly connected with the rotating core of the tone arm body (11), and the baffle (21) is arranged on the outer edge of the fan-shaped rotating plate (2).

3. The black gel record player arm light sensing type rotation distance limiting structure according to claim 1, characterized in that: The photocoupler device (3) comprises a photocoupler plate (31), a U-shaped photosensitive sheet (32) is arranged on the photocoupler plate (31), and a light sensing sensor is arranged in the U-shaped photosensitive sheet (32).

4. The black gel record player arm light sensing type rotation distance limiting structure according to claim 3, characterized in that: The photocoupler plate (31) is electrically connected with the motor (12), and the baffle (21) can move in or out of the U-shaped photosensitive sheet (32).

5. A light sensing type rotation limit structure for a record player arm of a black gel type record player according to claim 3 or 4, characterized in that: The movable base (4) comprises a sliding groove (41) arranged at the bottom of the tone arm base (1), a sliding plate (42) is slidingly arranged at the bottom of the sliding groove (41), the photocoupler plate (31) is fixedly arranged at the bottom of the sliding plate (42), and a plurality of teeth (43) are arranged in the sliding plate (42).

6. A light sensing type rotation limit structure for a black gel record player arm according to claim 5, characterized in that: The adjusting structure (5) comprises an adjusting seat (51) fixed to the bottom of the tone arm base (1) by a bolt, a limiting recessed plate (52) is arranged on the outer edge of the adjusting seat (51), the U-shaped photosensitive sheet (32) is movably arranged in the limiting recessed plate (52), an adjusting column (53) which can rotate at a fixed point is arranged in the adjusting seat (51), a gear (54) is arranged on the top of the adjusting column (53) and engaged with the teeth (43), and a concave pattern is arranged on the adjusting column (53).

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