CN212907071U

CN212907071U - Tone arm assembly for keeping dynamic balance state of tone head during working

Info

Publication number: CN212907071U
Application number: CN202021017296.5U
Authority: CN
Inventors: 吴剑峰
Original assignee: Foshan Nsr Audio Equipment Co ltd
Current assignee: Guangzhou Fusheng audio equipment Co.,Ltd.
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2021-04-06
Anticipated expiration: 2030-06-05

Abstract

The utility model discloses a tone arm component for keeping the dynamic balance state of a tone head during working, which comprises a tone arm and a tone head, wherein the tone head is arranged on the tone arm, the tone head comprises a tone needle, the tone arm component for keeping the dynamic balance state of the tone head during working also comprises a supporting block, the tone arm is connected with the supporting block, the supporting block is provided with a fulcrum, the fulcrum is a supporting fulcrum of the tone arm, the contact position of the tail end of the tone needle and a record is a drop point, the drop point and the fulcrum are at the same horizontal height, the acting force of the drop point of the tone needle and the reacting force of the fulcrum of the tone arm when the record rotates, because the acting force and the reacting force are opposite and equal to each other on the same plane, no resultant force in other directions exists, therefore, the stability of the needle pressure of the gramophone record is ensured, the needle jumping is avoided, the gramophone record works in a perfect dynamic balance working state, and the change of the vertical angle of the gramophone record caused by the fluctuation of the gramophone record in rotation is greatly reduced.

Description

Tone arm assembly for keeping dynamic balance state of tone head during working

Technical Field

The utility model relates to a record player especially relates to a tone arm subassembly that makes record head during operation keep dynamic balance state.

Background

The supporting fulcrum of the tone arm of the existing microgroove gramophone is higher than the drop point of a gramophone on a gramophone record, so that when the gramophone works, acting force and reacting force in the up-down direction and the front-back direction cannot enable the gramophone to work in a perfect dynamic balance working state.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a tone arm assembly which keeps the dynamic balance state of a tone arm supporting fulcrum and a tone needle when a tone head works at the same horizontal plane at the drop point of a record.

The purpose of the utility model is realized by adopting the following technical scheme:

a tone arm component for keeping a tone head in a dynamic balance state during working comprises a tone arm and a tone head, wherein the tone head is installed on the tone arm and comprises a tone needle, the tone arm component for keeping the tone head in the dynamic balance state during working further comprises a supporting block, the tone arm is connected with the supporting block, a supporting point is arranged on the supporting block and is a supporting fulcrum of the tone arm, the contact position of the tail end of the tone needle and a record is a drop point, and the drop point and the supporting point are at the same horizontal height.

Further, the tone arm is linear.

Further, the tone arm is parallel to a horizontal plane.

Further, the turntable head is perpendicular to the tone arm when the disc player is in operation.

Further, the tone arm assembly for keeping the dynamic balance state of the tone head during operation further comprises a sag-resistant support structure, the sag-resistant support structure comprises a support rod and a support portion, the support portion is fixed on the support rod, and the tone arm is installed on the support portion and supported by the support portion.

Further, the support portion is located between the cartridge and the support block.

Furthermore, the supporting part is U-shaped, and the tone arm is buckled on the supporting part.

Furthermore, the anti-sagging support structure further comprises a support plate, and the support rod is fixed on the support plate and is perpendicular to the support plate.

Further, the support plate is parallel to the horizontal plane.

Furthermore, the tone arm assembly for keeping the dynamic balance state of the tone head during working also comprises a height adjusting structure, the supporting block and the anti-sagging supporting structure are arranged on the height adjusting structure, the height adjusting structure is a rotating shaft of the tone arm, and the height is adjusted by the height adjusting structure through threaded rotation.

Compared with the prior art, the utility model discloses the tone arm subassembly that makes the record head during operation keep dynamic balance state still includes the supporting shoe, the record arm is connected with the supporting shoe, be equipped with the fulcrum on the supporting shoe, the fulcrum is the support fulcrum of record arm, the stylus end is the drop with record contact department, the drop is at same level with the fulcrum, the effort of record needle drop department and the reaction force of record arm fulcrum when record rotates, because effort and reaction force each other are opposite and equal at the coplanar, do not have the resultant force of other directions, thereby the stability of record head needle pressure has been guaranteed, avoid producing the jump needle, the record needle work is at a perfect dynamic balance operating condition, reduce the record needle vertical angle change that causes owing to the fluctuation when record rotates by a wide margin.

Drawings

FIG. 1 is a schematic diagram of a prior art tone arm assembly;

figure 2 is another schematic diagram of the prior art tone arm assembly of figure 1.

FIG. 3 is a schematic diagram of a tone arm assembly for maintaining the dynamic balance of the cartridge in operation in accordance with the present invention;

FIG. 4 is another schematic diagram of the tone arm assembly of FIG. 3 illustrating the operation of the cartridge in dynamic balance;

fig. 5 is a perspective view of the tone arm assembly of fig. 1 for maintaining the tone head in dynamic balance during operation.

In the figure: 10. a tone arm; 20. a support block; 21. a fulcrum; 30. a record head; 31. a stylus; 310. dropping points; 40. an anti-sag support structure; 41. a support plate; 42. a support bar; 43. a support portion; 50. a height adjustment structure; 200. and (7) recording.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when a structure is referred to as being "secured to" another structure, it can be directly on the other structure or intervening structures may also be present, secured by the intervening structures. When a structure is referred to as being "connected" to another structure, it can be directly connected to the other structure or intervening structures may also be present. When a structure is referred to as being "disposed on" another structure, it can be directly on the other structure or intervening structures may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-2, in the prior art, the fulcrum 21 of the tone arm 10 is at a higher level than the drop point 310 between the stylus 31 and the record 200. The record 200 rotates to generate a force F1, and a reaction force F2 is generated at the fulcrum 21, resulting in an upward resultant force F5 due to the fact that the force F1 is not in the same plane as the reaction force F2. The resultant force F5 affects the dynamic balance of the stylus 31 during operation, and tends to cause a needle skip. Since the needle pressure force F3 of the stylus 31 and the horizontal force F1 generated when the record 200 is rotated form an angle greater than 90 °, when the record 200 is played, the needle pressure of the turntable 30 and the supporting force F4 of the record 200 are not opposite and equal to each other on the same vertical plane, so that resultant forces in other directions exist to make the needle pressure of the turntable 30 in an unstable working state.

To solve the problems, the utility model discloses the tone arm subassembly that makes the record head during operation keep dynamic balance state makes the placement 310 and the fulcrum 21 at same level, has solved above-mentioned problem. Referring to fig. 3 to 5, in order to provide an embodiment of a tone arm assembly for maintaining a dynamic balance state of a pickup during operation, the tone arm assembly for maintaining a dynamic balance state of a pickup during operation includes a tone arm 10, a support block 20, a pickup 30, a sag prevention support structure 40, and a height adjustment structure 50.

The tone arm 10 is linear. The support block 20 includes a fulcrum 21. The cartridge 30 includes a stylus 31. The needle 31 may have a drop point 310 at the end thereof that contacts the record 200.

The sag prevention support structure 40 includes a support plate 41, a support rod 42, and a support portion 43. The support rod 42 is fixed to the support plate 41 and is perpendicular to the support plate 41. The support portion 43 is mounted on an end of the support rod 42 remote from the support plate 41.

The height adjusting structure 50 is a threaded structure, and the height adjustment is realized by rotation through the matching between threads. The height adjusting structure 50 is a rotation shaft of the tone arm 10.

When assembling the tone arm assembly for maintaining the dynamic balance state of the cartridge in operation, the sag prevention support structure 40 and the support block 20 are mounted on the height adjusting structure 50. The tone arm 10 is mounted at its end to a support block 20, the support point of the tone arm 10 being at a fulcrum 21. The cartridge 30 is mounted to the tone arm 10. The tone arm 10 is centrally mounted to a support 43 of the sag prevention support structure 40.

In operation of the tone arm assembly, which maintains the dynamic balance of the record label in operation, the record 200 rotates such that the needle 31 contacts the record 200 at a drop point 310, the drop point 310 being at the same level as the fulcrum 21. The tone arm 10 is now parallel to the horizontal plane. The record 200 rotates to generate acting force F1, the fulcrum 21 generates reacting force F2, the acting force F1 and the reacting force F2 are positioned on the same straight line, and the acting force F1 and the reacting force F2 are equal in size and opposite in direction, so that the resultant force in other directions can not be generated, and the generation of needle skipping is avoided. The needle pressure force F3 of the stylus 31 and the horizontal force F1 generated when the record 200 rotates form an angle of 90 °, so that when the record 200 is played, the needle pressure of the cartridge 30 and the supporting force F4 of the record 200 are opposite and equal to each other on the same vertical plane, so that no resultant force in other directions exists, and the needle pressure of the cartridge 30 is in a stable working state. The stylus 31 operates in a perfectly dynamically balanced operating condition that substantially reduces the change in the vertical angle of the stylus 31 due to undulations of the record 200 as it rotates.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, all according to the equivalent modifications and evolutions of the present invention, which are made to the above embodiments by the essential technology, and all belong to the protection scope of the present invention.

Claims

1. A tone arm assembly for maintaining dynamic balance during operation of a cartridge, comprising a tone arm and a cartridge, said cartridge being mounted to said tone arm, said cartridge including a stylus, wherein: the tone arm assembly for keeping the tone head in a dynamic balance state during working further comprises a supporting block, the tone arm is connected with the supporting block, a fulcrum is arranged on the supporting block and is a supporting fulcrum of the tone arm, a contact position of the tail end of the stylus and a record is a drop point, and the drop point and the fulcrum are at the same horizontal height.

2. A tone arm assembly for maintaining the dynamic balance of a cartridge in operation as claimed in claim 1, wherein: the tone arm is linear.

3. A tone arm assembly for maintaining the dynamic balance of a cartridge in operation as claimed in claim 2, wherein: the tone arm is parallel to the horizontal plane.

4. A tone arm assembly for maintaining the dynamic balance of a cartridge in operation as claimed in claim 2, wherein: when the CD player works, the record head is vertical to the record arm.

5. A tone arm assembly for maintaining the dynamic balance of a cartridge in operation as claimed in claim 1, wherein: the tone arm assembly for keeping the dynamic balance state of the tone head during working further comprises a sag-resistant support structure, the sag-resistant support structure comprises a support rod and a support part, the support part is fixed on the support rod, and the tone arm is installed on the support part and supported by the support part.

6. The tone arm assembly for maintaining a dynamic balance of a tone head of claim 5, wherein: the supporting part is positioned between the turntable head and the supporting block.

7. The tone arm assembly for maintaining a dynamic balance of a tone head of claim 5, wherein: the supporting part is U-shaped, and the tone arm is buckled on the supporting part.

8. The tone arm assembly for maintaining a dynamic balance of a tone head of claim 5, wherein: the anti-sagging support structure further comprises a support plate, and the support rod is fixed on the support plate and is perpendicular to the support plate.

9. The tone arm assembly for maintaining a dynamic balance of a tone head of claim 8, wherein: the support plate is parallel to the horizontal plane.

10. The tone arm assembly for maintaining a dynamic balance of a tone head of claim 5, wherein: the tone arm assembly for keeping the dynamic balance state of the tone head during working further comprises a height adjusting structure, the supporting block and the anti-sagging supporting structure are mounted on the height adjusting structure, the height adjusting structure is a rotating shaft of the tone arm, and the height is adjusted by the height adjusting structure through thread rotation.