Record player singing arm mechanism capable of being rotatably positioned and adjusted

Abstract

The utility model relates to the technical field of record players, in particular to a rotary positioning and adjusting type singing arm mechanism of a record player, which comprises a support frame, a singing arm body movably arranged on the support frame and a singing arm shaft rotatably arranged on the support frame, the singing arm shaft is used for driving the singing arm body to rotate, a first positioning block is further movably arranged on the support frame, and a second positioning block is further movably arranged on the support frame. One end of the singing arm shaft is coaxially connected with a first positioning block, the other end of the singing arm shaft is connected with the singing arm body, one side of the first positioning block is movably connected with a second positioning block, a position adjusting assembly is arranged between the first positioning block and the second positioning block, and the second positioning block is further provided with an induction column. The supporting frame is provided with a plurality of position sensors arranged at intervals. The position sensor is novel in structure, the relative position between the first positioning block and the second positioning block can be adjusted through the position adjusting assembly, so that the position matching relation between the sensing shaft and the position sensor is more accurate, the sensing precision is improved, and the structure is reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of record players, in particular to a record player tonearm mechanism which can be rotated, positioned and adjusted. Background Art

[0002] Traditional record players, as a classic audio playback device, convert the sound signals recorded on the record into electrical signals by touching the grooves on the record surface with the stylus, and then output the sound after amplification. One of its core components is the tonearm, and the movement and positioning accuracy of the tonearm directly affects the quality of the sound.

[0003] In existing record players, in order to achieve automatic return and positioning of the tonearm and prevent the stylus from wearing out in the non-playing state, position detection is usually performed by cooperating between the sensor and the sensor column. However, the existing technology has the following deficiencies: Low position sensing accuracy: Since the matching accuracy between the sensor and the sensor column is limited by machining and assembly errors, the position detection of the tonearm is not accurate enough in actual applications, which affects the overall performance and user experience of the record player; Inconvenient adjustment: In the existing design, once the relative position of the sensor and the sensor column is determined, if its position needs to be adjusted to improve the sensing accuracy or adapt to records of different sizes, it is often necessary to disassemble part of the structure of the record player, which is complicated and time-consuming, reducing the flexibility of use and maintenance efficiency; Lack of fine-tuning mechanism: The existing sensing system lacks an effective fine-tuning mechanism, so that the small deviations generated during the production process cannot be corrected in time, further limiting the accuracy and stability of position sensing. Summary of the invention

[0004] The utility model aims to solve the problems of the prior art and provides a record player tonearm mechanism with rotatable positioning adjustment, which has a novel structure and ingenious design. The relative position between a first positioning block and a second positioning block can be adjusted through a position adjustment component, thereby making the position matching relationship between the sensing shaft and the position sensor more precise, improving the sensing accuracy and making the structure reliable.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The utility model provides a record player tonearm mechanism with rotatable positioning adjustment, which comprises a support frame, a tonearm body movably mounted on the support frame and a tonearm shaft rotatably mounted on the support frame, the tonearm shaft is used to drive the tonearm body to rotate, a first positioning block is also movably arranged on the support frame, one end of the tonearm shaft is coaxially connected to the first positioning block, the other end of the tonearm shaft is connected to the tonearm body, a second positioning block is movably connected to one side of the first positioning block, a position adjustment component is arranged between the first positioning block and the second positioning block, the position adjustment component is used to adjust the position of the second positioning block relative to the first positioning block, a sensing column is also arranged on the second positioning block, the support frame is equipped with a plurality of position sensors arranged at intervals, and the position sensors are arranged in correspondence with the sensing columns.

[0007] Among them, the position adjustment component includes a screw and a spring, the two ends of the screw are respectively threadedly connected with a first nut and a second nut, the first nut is installed on the first positioning block, and the second nut is installed on the second positioning block. The screw is inserted into the first positioning block and the second positioning block, and the spring is movably sleeved on the outer periphery of the screw, and the two ends of the spring are respectively connected to the first positioning block and the second positioning block.

[0008] Among them, at least one eccentric shaft is also arranged on the second positioning block, and an indicating block is arranged at one end of the eccentric shaft, and the indicating direction of the indicating block is toward the tonearm shaft, and the eccentric shaft is used to be arranged correspondingly with the position sensor.

[0009] Wherein, the position sensor is a photoelectric sensor.

[0010] Wherein, a stop block is also arranged on the support frame, and a limiting groove is provided on the other side of the first positioning block, and the stop block is located in the limiting groove.

[0011] Wherein, a control circuit board is also installed on the support frame, and the position sensor is electrically connected to the control circuit board.

[0012] Beneficial effects of the utility model:

[0013] The utility model has a novel structure and an ingenious design, and is characterized in that a first positioning block, a second positioning block and a position adjustment component are provided; when the tonearm shaft rotates, the first positioning block is driven to rotate, and then the second positioning block is driven to rotate, and the sensing column of the second positioning block cooperates with the position sensor on the support frame to sense, so that the tonearm body is controlled by sending a corresponding signal through the control circuit board; wherein, in order to improve its sensing accuracy and working reliability, a position adjustment component is provided, and the relative position between the first positioning block and the second positioning block can be adjusted by the position adjustment component, so that the position coordination relationship between the sensing shaft and the position sensor is more accurate, the sensing accuracy is improved, and the structure is reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a structural schematic diagram of a tonearm mechanism of a record player capable of rotation, positioning and adjustment.

[0015] Figure 2 This is a schematic structural diagram from another perspective of a rotatable, positionally adjustable tonearm mechanism for a record player of the utility model.

[0016] Figure 3 It is a structural schematic diagram of the coordination among the tonearm shaft, the first positioning block, the second positioning block and the position adjustment assembly of the utility model.

[0017] exist Figures 1 to 3 Reference numerals in the drawings include:

[0018] 1. Support frame; 2. Tonearm body; 3. Tonearm shaft; 4. First positioning block; 5. Second positioning block; 6. Position adjustment assembly; 7. Sensing column; 8. Position sensor; 9. Screw; 10. Spring; 11. First nut; 12. Second nut; 13. Eccentric shaft; 14. Indicator block; 15. Stop block; 16. Limiting groove; 17. Control circuit board; 18. Nut. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings, and the contents mentioned in the implementation modes are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0020] Embodiment 1

[0021] A record player tonearm mechanism capable of rotational positioning adjustment, such as Figures 1 to 3As shown, it includes a support frame 1, a tonearm body 2 movably mounted on the support frame 1 and a tonearm shaft 3 rotatably mounted on the support frame 1, the tonearm shaft 3 is used to drive the tonearm body 2 to rotate, the support frame 1 is also movably provided with a first positioning block 4, one end of the tonearm shaft 3 is coaxially connected to the first positioning block 4, the other end of the tonearm shaft 3 is connected to the tonearm body 2, one side of the first positioning block 4 is movably connected with a second positioning block 5, a position adjustment component 6 is arranged between the first positioning block 4 and the second positioning block 5, the position adjustment component 6 is used to adjust the position of the second positioning block 5 relative to the first positioning block 4, the second positioning block 5 is also provided with a sensing column 7, the support frame 1 is provided with a plurality of spaced position sensors 8, the position sensors 8 are arranged corresponding to the sensing columns 7, and the position sensors 8 are photoelectric sensors; the support frame 1 is also provided with a control circuit board 17, and the position sensor 8 is electrically connected to the control circuit board 17. Specifically, when the utility model is working, the external driving mechanism drives the tonearm shaft 3 to rotate or rise to drive the tonearm body 2 to rotate or rise. The above is the conventional technology of the record player and will not be repeated here. The utility model has a novel structure and a clever design. Its characteristics are that a first positioning block 4, a second positioning block 5 and a position adjustment component 6 are provided. When the tonearm shaft 3 rotates, it drives the first positioning block 4 to rotate, and then drives the second positioning block 5 to rotate. The sensing column 7 of the second positioning block 5 cooperates with the position sensor 8 on the support frame 1 to sense, so as to realize the control of the tonearm body 2 by sending a corresponding signal through the control circuit board. In order to improve its sensing accuracy and working reliability, a position adjustment component 6 is provided. The relative position between the first positioning block 4 and the second positioning block 5 can be adjusted by the position adjustment component 6, so that the position matching relationship between the sensing shaft and the position sensor 8 is more accurate, the sensing accuracy is improved, and the structure is reliable.

[0022] In the embodiment of the present application, the position adjustment component 6 includes a screw rod 9 and a spring 10, the two ends of the screw rod 9 are respectively threadedly connected with a first nut 11 and a second nut 12, the first nut 11 is installed on the first positioning block 4, the second nut 12 is installed on the second positioning block 5, the screw rod 9 is inserted into the first positioning block 4 and the second positioning block 5, the spring 10 is movably sleeved on the outer periphery of the screw rod 9, and the two ends of the spring 10 are respectively connected to the first positioning block 4 and the second positioning block 5. Specifically, under the above setting, by screwing the first nut 11 and / or the second nut 12, the spacing between the first nut 11 and / or the second nut 12 can be adjusted, and then the relative position between the first positioning block 4 and the second positioning block 5 can be adjusted, the two ends of the spring 10 push the first positioning block 4 and the second positioning block 5 to be spaced apart from each other, and the spring 10 plays a role in buffering and increasing tension, with a reliable structure and ingenious design.

[0023] In the embodiment of the present application, at least one eccentric shaft 13 is further provided on the second positioning block 5, and an indicator block 14 is provided at one end of the eccentric shaft 13, and the indicator direction of the indicator block 14 faces the tonearm shaft 3, and the eccentric shaft 13 is used to be arranged in correspondence with the position sensor 8. Specifically, by the corresponding cooperation between the eccentric shaft 13 and the position sensor 8, the sensing accuracy of the position sensor 8 can also be detected and calibrated, and the indicator block 14 can be used to conveniently confirm whether the second positioning block 5 keeps following the rotation and rotation of the tonearm shaft 3 when rotating, so as to facilitate the technicians to perform further calibration and adjustment.

[0024] In the embodiment of the present application, a stop block 15 is further provided on the support frame 1, and a limiting groove 16 is provided on the other side of the first positioning block 4, and the stop block 15 is located in the limiting groove 16. Specifically, under the above arrangement, the rotation range of the first positioning block 4 can be limited, and then the rotation range of the tonearm shaft 3 driving the tonearm body 2 can be limited, which is conducive to improving the structural reliability and working stability.

[0025] Embodiment 2

[0026] The difference between the second embodiment of the present application and the first embodiment is that: Figure 3 As shown, the two ends of the screw rod 9 are respectively connected with a first nut 11 and a nut 18, the nut 18 and the screw rod 9 are integrally formed, the nut 18 is mounted on the second positioning block 5, and the first nut 11 is mounted on the first positioning block 4. The positional relationship between the first positioning block 4 and the second positioning block 5 can be adjusted by turning the screw rod 9 or the first nut 11, so as to facilitate fine-tuning.

[0027] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A record player tonearm mechanism capable of rotational positioning adjustment, characterized in that: The tonearm shaft is used to drive the tonearm body to rotate; a first positioning block is also movably provided on the support frame; one end of the tonearm shaft is coaxially connected to the first positioning block; the other end of the tonearm shaft is connected to the tonearm body; a second positioning block is movably connected to one side of the first positioning block; a position adjustment component is provided between the first positioning block and the second positioning block; the position adjustment component is used to adjust the position of the second positioning block relative to the first positioning block; a sensing column is also provided on the second positioning block; the support frame is equipped with a plurality of position sensors arranged at intervals; the position sensors are arranged correspondingly to the sensing columns.

2. A rotatable and position-adjustable tonearm mechanism for a record player according to claim 1, characterized in that: The position adjustment component includes a screw and a spring, and the two ends of the screw are respectively threadedly connected with a first nut and a second nut, the first nut is installed on the first positioning block, and the second nut is installed on the second positioning block. The screw is inserted into the first positioning block and the second positioning block, and the spring is movably sleeved on the outer circumference of the screw, and the two ends of the spring are respectively connected to the first positioning block and the second positioning block.

3. The rotatable and position-adjustable tonearm mechanism of a record player according to claim 1, characterized in that: At least one eccentric shaft is also arranged on the second positioning block, an indicating block is arranged at one end of the eccentric shaft, the indicating direction of the indicating block is toward the tonearm shaft, and the eccentric shaft is used to be arranged correspondingly with the position sensor.

4. The rotatable and position-adjustable tonearm mechanism of a record player according to claim 1, characterized in that: The position sensor is a photoelectric sensor.

5. The rotatable and position-adjustable tonearm mechanism of a record player according to claim 1, characterized in that: The support frame is also provided with a stop block, and a limiting groove is provided on the other side of the first positioning block, and the stop block is located in the limiting groove.

6. The rotatable and position-adjustable tonearm mechanism of a record player according to claim 1, characterized in that: A control circuit board is also mounted on the support frame, and the position sensor is electrically connected to the control circuit board.

Images