CN111128246A - Tone arm and have record player of this tone arm - Google Patents
Tone arm and have record player of this tone arm Download PDFInfo
- Publication number
- CN111128246A CN111128246A CN202010069546.8A CN202010069546A CN111128246A CN 111128246 A CN111128246 A CN 111128246A CN 202010069546 A CN202010069546 A CN 202010069546A CN 111128246 A CN111128246 A CN 111128246A
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- Prior art keywords
- rotating shaft
- tone arm
- tone
- support
- base
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- 230000005484 gravity Effects 0.000 claims abstract description 5
- 230000001105 regulatory effect Effects 0.000 claims description 33
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000009191 jumping Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 241001422033 Thestylus Species 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
- G11B3/02—Arrangements of heads
- G11B3/10—Arranging, supporting, or driving of heads or of transducers relatively to record carriers
- G11B3/30—Supporting in an inoperative position
- G11B3/31—Construction of arms
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
- G11B3/02—Arrangements of heads
- G11B3/10—Arranging, supporting, or driving of heads or of transducers relatively to record carriers
- G11B3/12—Supporting in balanced, counterbalanced or loaded operative position during transducing, e.g. loading in direction of traverse
- G11B3/14—Supporting in balanced, counterbalanced or loaded operative position during transducing, e.g. loading in direction of traverse by using effects of gravity or inertia, e.g. counterweight
- G11B3/145—Providing horizontal force, e.g. anti-skating force
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
- G11B3/02—Arrangements of heads
- G11B3/10—Arranging, supporting, or driving of heads or of transducers relatively to record carriers
- G11B3/30—Supporting in an inoperative position
- G11B3/32—Construction or arrangement of support pillars
Landscapes
- Holding Or Fastening Of Disk On Rotational Shaft (AREA)
Abstract
The invention discloses a tone arm, comprising: a base; the bracket is connected with the base through a rotating shaft and can rotate along with the rotating shaft; one end of the singing rod is connected with a record head; the adjusting component is arranged on the support and comprises a rotating shaft and a weight mechanism which is arranged on the rotating shaft and used for balancing the gravity of the record head and a dynamic balance mechanism used for dynamically adjusting the needle pressure of the record head, and the rotating shaft is connected with the record rod. Compared with the prior art, the tone bars at the front end and the rear end of the support are kept balanced through the counterweight mechanism, and then pressure is applied to the tone bar at the front end of the support through the dynamic balance mechanism to achieve the required value of tone head needle pressure, namely the tone bar pressing angle is dynamically adjusted through the dynamic balance mechanism, so that the tone head needle pressure is dynamically adjusted, and the condition that correct tracking cannot be carried out due to tone arm needle jumping is avoided. A gramophone with the tone arm is also disclosed.
Description
Technical Field
The invention relates to the technical field of record equipment, in particular to a tone arm and a gramophone with the same.
Background
The phonograph is a mature and classical sound playing device, and the playing principle is as follows: the disc record is set on the turntable of the record player to rotate, and the stylus of the record arm is contacted with the curved notch of the record player, so as to read out the corresponding sound signal, amplify the signal and play it again.
Record player among the prior art is mostly the horizontal type, adopt the level to put the form promptly, the tone arm is parallel with the desktop, exert the needle pressure for the stylus that is located its front end through the counter weight that is located the tone arm end, however the record player occupation space of horizontal type is great, be unfavorable for the effective utilization in space, in order to solve this technical problem, people set up the record player to vertical, carousel and tone arm vertical installation are on the record player base promptly, nevertheless because gravity and carousel surface parallel, the tone arm can't exert the needle pressure for the stylus, thereby can lead to the tone arm to jump the needle, can't the correct tracking.
Disclosure of Invention
The present invention is directed to a tone arm, which solves the above-mentioned problems of the prior art.
Another object of the present invention is to provide a record player, which is suitable for the above-mentioned drawbacks of the prior art.
To solve the above technical problem, according to an aspect of the present invention, there is provided a tone arm including:
a base;
the bracket is connected with the base through a rotating shaft and can rotate along with the rotating shaft;
one end of the singing rod is connected with a record head;
the adjusting component is arranged on the support and comprises a rotating shaft and a weight mechanism which is arranged on the rotating shaft and used for balancing the gravity of the record head and a dynamic balance mechanism used for dynamically adjusting the needle pressure of the record head, and the rotating shaft is connected with the record rod.
The further technical scheme is as follows: the dynamic balance mechanism comprises an elastic part and a pressure regulating part, the pressure regulating part is arranged on the support, a first fixed block is arranged in the rotating shaft, the elastic part is located in the rotating shaft, one side of the elastic part is connected onto the first fixed block, the other side of the elastic part is connected onto the pressure regulating part in a penetrating mode, and the rotating shaft is connected onto the pressure regulating part to regulate the elasticity of the elastic part through the pressure regulating part.
The further technical scheme is as follows: the pressure regulating part comprises a first regulating rod and a stay wire, one end of the first regulating rod is connected to the inner side wall of the top of the support, the other end of the first regulating rod penetrates through the inner side wall and is located outside the support, one end of the stay wire is wound on the first regulating rod, and the other end of the stay wire is connected with the elastic part.
The further technical scheme is as follows: the pressure regulating part also comprises a fulcrum which is positioned in the rotating shaft and positioned between the two ends of the pull wire so as to press and hold the pull wire.
The further technical scheme is as follows: the pressure regulating part comprises a second regulating rod and a connecting block, the two ends of the second regulating rod are connected to the inner side wall of the top of the support, the connecting block is sleeved on the second regulating rod and can move left and right along the second regulating rod, and the connecting block is connected with the elastic part to regulate the expansion of the elastic part when the elastic part moves left and right.
The further technical scheme is as follows: the two sides of the rotating shaft are both connected with a rotating bearing, the side wall of the bracket corresponding to the position of the rotating bearing is provided with a fastening through hole, and one end of a fastening screw penetrates through the fastening through hole and is positioned in a bearing hole of the rotating bearing.
The further technical scheme is as follows: the tone arm further comprises a clamping device, the clamping device is located on the base, and an arc-shaped surface matched with the tone rod is arranged on the top surface of the clamping device so as to clamp and contain the tone rod.
The further technical scheme is as follows: the base comprises a hollow foundation column and a base plate sleeved at the top of the foundation column, the support is installed on the base plate through a screw, a transverse rotating bearing is arranged in an inner cavity of the foundation column, the top end of the rotating shaft is connected with the support, the bottom end of the rotating shaft is in shaft connection with the bearing, and the rotating shaft rotates to drive the support to rotate.
In order to solve the above technical problem, according to another aspect of the present invention, there is provided a player, which includes a base, a mounting plate, a turntable, and a tone arm, wherein the mounting plate is vertically disposed on the base, the turntable is disposed on the mounting plate, a disk fixing member for pressing a disk against the turntable is disposed at a middle portion of the turntable, the tone arm is disposed on the base to contact a surface of the disk to realize a playing function, and the tone arm is the above tone arm.
The technical scheme is that the distance of the gramophone is calculated according to a formula D of 3768.665/L, and the compensation angle is calculated according to a formula β of 5229.6/L, wherein L is the effective arm length of the gramophone arm.
Compared with the prior art, the tone bars at the front end and the rear end of the support are kept balanced through the counterweight mechanism, and then pressure is applied to the tone bar at the front end of the support through the dynamic balance mechanism to achieve the required value of tone head needle pressure, namely the tone bar pressing angle is dynamically adjusted through the dynamic balance mechanism, so that the tone head needle pressure is dynamically adjusted, and the condition that correct tracking cannot be carried out due to tone arm needle jumping is avoided.
Drawings
Figure 1 is a schematic perspective view of a first embodiment of a tone arm of the present invention.
Fig. 2 is a schematic view of the tone arm of fig. 1 with the turntable shaft and the weight mechanism removed.
Figure 3 is a schematic diagram of the construction of a first embodiment of a tone arm of the present invention.
Figure 4 is an exploded view of a portion of a first embodiment of a tone arm of the present invention.
Figure 5 is a schematic perspective view of a tone arm of a second embodiment of the present invention.
Figure 6 is a schematic diagram of the construction of a second embodiment of a tone arm of the present invention.
Fig. 7 is a schematic diagram of the structure of an embodiment of the player of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention is further described with reference to the accompanying drawings and examples.
Referring to fig. 1 to 4, fig. 1 to 4 show a first embodiment of a tone arm 1 according to the present invention. In the embodiment shown in the drawings, the tone arm 1 includes a base 10, a support 20, a tone bar 30 and an adjusting assembly, wherein the support 20 is connected to the base 10 through a rotating shaft 50 and can rotate along with the rotating shaft 50, a tone head 60 is connected to one end of the tone bar 30, the adjusting assembly is arranged on the support 20 and includes a rotating shaft 401, a weight mechanism 402 for balancing the weight of the tone head 60 and a dynamic balance mechanism 403 for dynamically adjusting the needle pressure of the tone head 60, which are arranged on the rotating shaft 401, and the rotating shaft 401 is connected to the tone bar 30. Understandably, the connection between the holder 20 and the adjusting assembly is the axial center position of the tone arm 1, in the present invention, in order to ensure that the front and rear arm segments of the tone arm 1 are balanced, the front and rear tone arm torques are balanced, and the tone arm front segment torque Tf ═ Wf ═ Lf ═ Wf sin (R), the tone arm rear segment torque Tr ═ Lr ═ Wr ═ ELr ═ sin (R), wherein Wf is the tone arm front segment mass, Lf is the tone arm front segment distance vector, Elf is the tone arm effective length (i.e., the distance from the center of gravity of the front tone arm 1 to the axial center of the tone arm 1), Wr is the tone arm rear segment mass, Lr is the tone arm rear segment distance vector, ELr is the tone arm effective length (i.e., the distance from the rear tone arm 1 to the center of the tone arm 1), R is the tone arm offset angle, Wf ═ Elf ═ ELr, ELr is the weight calculated as the radial center weight per weight (Wr) and wt,/wt is calculated from the weight calculated as the weight at this time point (Wr), the value of the effective length ELr of the rear tone arm may be obtained according to the above formula, and the mounting position of the weight mechanism 402 in the tone arm 1 may be set according to the value to balance the weight of the tone head 60. Based on the above design, the present invention keeps the tone bars 30 at the front and rear ends of the support 20 balanced by the weight mechanism 402, and then applies pressure to the tone bar 30 at the front end of the support 20 by the dynamic balance mechanism 403 to achieve the desired value of the needle pressure of the tone head 60, i.e. dynamically adjust the pressing angle of the tone bar 30 by the dynamic balance mechanism 403, and further dynamically adjust the needle pressure of the tone head 60, so as to prevent the tone arm 1 from jumping and causing incorrect tracking.
With continued reference to fig. 1 to 3, in some embodiments, the dynamic balance mechanism 403 includes an elastic member 4031 and a pressure adjusting member 4033, the pressure adjusting member 4033 is disposed on the bracket 20, and a first fixed block 4034 is disposed in the rotating shaft 401, in this embodiment, the first fixed block 4034 is located at an end of the rotating shaft 401, and the elastic member 4031 is located in the rotating shaft 401, and one side of the elastic member 4031 is connected to the first fixed block 4034, and the other side of the elastic member 4031 penetrates through the rotating shaft 401 and is connected to the pressure adjusting member 4033, so as to adjust the expansion and contraction of the elastic member 4031 through the pressure adjusting member 4033.
Specifically, in this embodiment, the pressure regulating member 4033 includes a first adjusting lever 331a, a pull wire 332 and a support shaft 333, one end of the first adjusting lever 331a is connected to an inner sidewall of the top of the bracket 20, the other end of the first adjusting lever is disposed through the inner sidewall and located outside the bracket 20, one end of the pull wire 332 is wound on the first adjusting lever 331a, the other end of the pull wire 332 is connected to the elastic member 4031, and the support shaft 333 is located in the rotating shaft 401 and located between two ends of the pull wire 332 to press and hold the pull wire 332.
It can be appreciated that, in the present embodiment, rotating the first adjustment lever 331a counterclockwise tightens the cord 332 so that the spring is stretched to increase the tension, the force of the cord 332 pulls the back end of the tone bar 30 upward, and the front end of the tone bar 30 is pressed downward by leverage to apply pressure to the pickup 60 to achieve the desired value of the acupressure of the pickup 60, thereby achieving the contact of the pickup 60 with the surface of the record.
In the embodiment shown in the drawings, the base 10 includes a hollow base pillar 101 and a base plate 102 sleeved on the top of the base pillar 101, the support 20 is mounted on the base plate 102 through a screw, a transverse rotating bearing is disposed in an inner cavity of the base pillar 101, the top end of the rotating shaft 50 is connected to the support 20, the bottom end of the rotating shaft is coupled to the bearing, and the rotating shaft 50 rotates to drive the support 20 to rotate, so as to rotate the tone arm 1 and the tone bar 30.
With continued reference to fig. 1 and 4, preferably, a rotating bearing 70 is connected to both sides of the rotating shaft 401, a fastening through hole 203 is formed in a side wall of the bracket 20 corresponding to the position of the rotating bearing 70, and one end of a fastening screw 80 is inserted through one fastening through hole 203 and is located in a bearing hole of the rotating bearing 70. Specifically, the two ends of the rotating shaft 401 are sleeved with the rotating bearings 70, the rotating bearings 70 can rotate relative to the rotating shaft 401, the rotating bearings 70 are stably installed through the fastening screws 80, and effective implementation of subsequent adjustment is guaranteed.
In this embodiment, the bracket 20 includes a bottom plate 201 installed on the substrate 102 and two connection plates 202 respectively extending upward from two sides of the surface of the bottom plate 201, the top end of the rotating shaft 50 is connected to the bottom plate 201, and each connection plate 202 is provided with a fastening through hole 203 for the fastening screw 80 to pass through.
In the embodiment shown in the drawings, the tone arm 1 further includes a holding device 90, the holding device 90 is located on the base 10, and an arc surface 901 matching with the tone bar 30 is provided on the top surface of the holding device 90 to hold and accommodate the tone bar 30, so as to limit the front end of the tone bar 30 when in use, and ensure the stability of the tone arm 1 in use. Preferably, the tone arm 1 further includes a stop control 902 for lifting the tone bar 30 off the surface of the record when it is desired to stop operation of the tone arm 1, it being understood that the stop control 902 is well known to those skilled in the art and the construction thereof will not be described herein.
Referring to fig. 5 and 6, fig. 5 and 6 show a second embodiment of the tone arm 1 of the present invention. The present embodiment is different from the first embodiment in the specific structures of the pressure adjusting member 4033, the bracket 20 and the first fixed block 4034, and the rest of the structures are the same or similar. In this embodiment, the bracket 20 further includes a fixing plate 204 located at the top ends of the two connecting plates 202 and bridging the two connecting plates 202, and a rectangular groove is formed in the fixing plate 204; the first fixed block 4034 is arranged in the rotating shaft 401 and is cylindrical, and one end of the elastic member 4031 is hooked on the cylindrical first fixed block 4034; the pressure adjusting member 4033 includes a second adjusting lever 331b and a connecting block 334, two ends of the second adjusting lever 331b are connected to an inner sidewall of the top of the bracket 20, that is, the second adjusting lever 331b is located in the rectangular groove, and two ends of the second adjusting lever 331b are connected to an inner sidewall of the fixing plate 204, the connecting block 334 is sleeved on the second adjusting lever 331b and can move left and right along the second adjusting lever 331b, and the connecting block 334 is connected to the other end of the elastic member 4031 to adjust the extension and retraction of the elastic member 4031 when the connecting block moves left and right. It will be appreciated that in this embodiment, moving the connecting block 334 to the left causes the spring to lift, the spring will provide a reaction force in a diagonal direction, such that the back end of the tone bar 30 (i.e., the end away from the turntable head 60) is lifted upward, and the front end of the tone bar 30 is pressed downward by leverage to apply pressure to the turntable head 60, thereby bringing the turntable head 60 into contact with the surface of the record, and the magnitude of this force will increase/decrease as the connecting block 334 is adjusted to move to the left/right.
Referring to fig. 7, fig. 7 is a schematic diagram of a structure of a player 100 according to an embodiment of the present invention. In some embodiments, the player 100 includes a base 2, a mounting plate, a turntable 4 and a tone arm 1, the mounting plate is vertically disposed on the base 2, preferably, in this embodiment, a mounting surface with a certain inclination angle with the horizontal plane is formed on the mounting plate, the turntable 4 is disposed on the mounting surface inclined by the mounting plate to be inclined with the base 2, a driving shaft 7 is disposed on the base 2, the driving shaft 7 drives the turntable 4 to rotate through a belt 6, and a record fixing member 5 for pressing a record on the turntable 4 is disposed in the middle of the turntable 4, the tone arm 1 is disposed on the base 2 to contact with the surface of the record to realize a playing function, and the tone arm 1 is the tone arm described in any one of the above embodiments.
The tone arm 1 of the present invention 100 is provided with a dynamic balance structure to apply pressure to the tone bar 30 at the front end of the holder 20, thereby dynamically adjusting the magnitude of the needle pressure of the cartridge 60, so as to solve the problem that the weight applied to the tone arm 1 of the present invention 100 does not cause the cartridge 60 to be in good contact with a record as in a horizontal type.
Pall (b.b. bauer) published in 1945 an article "tracking angle in phonograph disks", in which formulas for calculating the optimum D-throw and the compensation angle β derived therefrom are described, wherein,
wherein L is the effective arm length of the tone arm 1, r1And r2Respectively corresponding to the radius of the innermost circle and the radius of the outermost circle of the graticule of the vinyl record, for r1And r2The respective standards are published in different periods and in different countries, such as: U.S. standards RIAA E4-1963 and E1&E4-1978, British Standard BS1928-1965, German Standard DIN45547-1981, Japanese Standard JIS S8502-1973, International electrotechnical IEC98-1987 and IEC 60098, the differences between the standards being taken as r in these standards in order to obtain maximum compatibility1Minimum sum r of2Maximum value of, i.e. r1＝57.5mm，r2146.5mm, the distance D is 3768.665/L, the compensation angleβ is 5229.6/L, the offset and compensation angles of the present invention are calculated from the above equation.
In summary, the tone bars at the front end and the rear end of the support are kept balanced by the counterweight mechanism, and then pressure is applied to the tone bar at the front end of the support by the dynamic balance mechanism to achieve the required value of tone head needle pressure, i.e. the pressing angle of the tone bar is dynamically adjusted by the dynamic balance mechanism, so as to dynamically adjust the size of the tone head needle pressure, and prevent the tone arm from jumping to cause incorrect tracking.
The foregoing is considered as illustrative of the preferred embodiments of the invention and is not to be construed as limiting the invention in any way. Various equivalent changes and modifications can be made by those skilled in the art based on the above embodiments, and all equivalent changes and modifications within the scope of the claims should fall within the protection scope of the present invention.
Claims (10)
1. A tone arm, said tone arm comprising:
a base;
the bracket is connected with the base through a rotating shaft and can rotate along with the rotating shaft;
one end of the singing rod is connected with a record head;
the adjusting component is arranged on the support and comprises a rotating shaft and a weight mechanism which is arranged on the rotating shaft and used for balancing the gravity of the record head and a dynamic balance mechanism used for dynamically adjusting the needle pressure of the record head, and the rotating shaft is connected with the record rod.
2. The tone arm of claim 1, wherein: the dynamic balance mechanism comprises an elastic part and a pressure regulating part, the pressure regulating part is arranged on the support, a first fixed block is arranged in the rotating shaft, the elastic part is located in the rotating shaft, one side of the elastic part is connected onto the first fixed block, the other side of the elastic part is connected onto the pressure regulating part in a penetrating mode, and the rotating shaft is connected onto the pressure regulating part to regulate the elasticity of the elastic part through the pressure regulating part.
3. The tone arm of claim 2, wherein: the pressure regulating part comprises a first regulating rod and a stay wire, one end of the first regulating rod is connected to the inner side wall of the top of the support, the other end of the first regulating rod penetrates through the inner side wall and is located outside the support, one end of the stay wire is wound on the first regulating rod, and the other end of the stay wire is connected with the elastic part.
4. The tone arm of claim 3, wherein: the pressure regulating part also comprises a fulcrum which is positioned in the rotating shaft and positioned between the two ends of the pull wire so as to press and hold the pull wire.
5. The tone arm of claim 2, wherein: the pressure regulating part comprises a second regulating rod and a connecting block, the two ends of the second regulating rod are connected to the inner side wall of the top of the support, the connecting block is sleeved on the second regulating rod and can move left and right along the second regulating rod, and the connecting block is connected with the elastic part to regulate the expansion of the elastic part when the elastic part moves left and right.
6. The tone arm of claim 1, wherein: the two sides of the rotating shaft are both connected with a rotating bearing, the side wall of the bracket corresponding to the position of the rotating bearing is provided with a fastening through hole, and one end of a fastening screw penetrates through the fastening through hole and is positioned in a bearing hole of the rotating bearing.
7. The tone arm of claim 1, wherein: the tone arm further comprises a clamping device, the clamping device is located on the base, and an arc-shaped surface matched with the tone rod is arranged on the top surface of the clamping device so as to clamp and contain the tone rod.
8. The tone arm of claim 1, wherein: the base comprises a hollow foundation column and a base plate sleeved at the top of the foundation column, the support is installed on the base plate through a screw, a transverse rotating bearing is arranged in an inner cavity of the foundation column, the top end of the rotating shaft is connected with the support, the bottom end of the rotating shaft is in shaft connection with the bearing, and the rotating shaft rotates to drive the support to rotate.
9. A record player characterized by: the said record player includes base, mounting panel, rotary table and tone arm, the said mounting panel is set up on the base vertically, the said rotary table is set up on the mounting panel, and the middle part of the rotary table has a disc fixing part used for pressing the disc on the rotary table, the said tone arm is set up on the base, in order to realize the broadcasting function with the surface contact of the disc, and the said tone arm is the said tone arm of any claim 1-8 above.
10. The player of claim 9, wherein the player over-distance is calculated according to the formula D-3768.665/L and the compensation angle is calculated according to the formula β -5229.6/L, wherein L is the effective arm length of the player arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010069546.8A CN111128246B (en) | 2020-01-21 | 2020-01-21 | Tone arm and record player with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010069546.8A CN111128246B (en) | 2020-01-21 | 2020-01-21 | Tone arm and record player with same |
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| Publication Number | Publication Date |
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| CN111128246A true CN111128246A (en) | 2020-05-08 |
| CN111128246B CN111128246B (en) | 2024-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010069546.8A Active CN111128246B (en) | 2020-01-21 | 2020-01-21 | Tone arm and record player with same |
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| Country | Link |
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| CN (1) | CN111128246B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112133329A (en) * | 2020-10-14 | 2020-12-25 | 广东理丹电子科技股份有限公司 | Adjusting structure of sound arm support |
| CN115482840A (en) * | 2022-05-23 | 2022-12-16 | 深圳市博威电器有限公司 | Intelligent gramophone control device |
| CN116368567A (en) * | 2020-08-18 | 2023-06-30 | 理查德·布莱恩 | Pivot of tone arm |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001297401A (en) * | 2000-04-11 | 2001-10-26 | Besutakusu Kk | Tone arm and record player |
| TWM549947U (en) * | 2017-06-28 | 2017-10-01 | Hanpin Electron Co Ltd | Shaft structure of tonearm counterweight ring for turntable |
| CN206574481U (en) * | 2017-01-23 | 2017-10-20 | 深圳市佳音王科技股份有限公司 | A kind of tone arm and its phonograph |
| CN211062464U (en) * | 2020-01-21 | 2020-07-21 | 深圳梵尼诗文化科技有限公司 | Tone arm and have record player of this tone arm |
-
2020
- 2020-01-21 CN CN202010069546.8A patent/CN111128246B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001297401A (en) * | 2000-04-11 | 2001-10-26 | Besutakusu Kk | Tone arm and record player |
| CN206574481U (en) * | 2017-01-23 | 2017-10-20 | 深圳市佳音王科技股份有限公司 | A kind of tone arm and its phonograph |
| TWM549947U (en) * | 2017-06-28 | 2017-10-01 | Hanpin Electron Co Ltd | Shaft structure of tonearm counterweight ring for turntable |
| CN211062464U (en) * | 2020-01-21 | 2020-07-21 | 深圳梵尼诗文化科技有限公司 | Tone arm and have record player of this tone arm |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116368567A (en) * | 2020-08-18 | 2023-06-30 | 理查德·布莱恩 | Pivot of tone arm |
| CN112133329A (en) * | 2020-10-14 | 2020-12-25 | 广东理丹电子科技股份有限公司 | Adjusting structure of sound arm support |
| CN115482840A (en) * | 2022-05-23 | 2022-12-16 | 深圳市博威电器有限公司 | Intelligent gramophone control device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111128246B (en) | 2024-07-05 |
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