Shock-proof device for main rotating shaft of phonograph disc

Abstract

The utility model discloses an anti-vibration device for a main rotating shaft of a phonograph disc, which comprises a shaft sleeve and a rotating shaft body arranged at the top of the shaft sleeve, a first connecting plate, a movable plate and a second connecting plate are sequentially arranged in the shaft sleeve from top to bottom, and three guide rods are symmetrically and fixedly connected in the shaft sleeve at equal intervals. The first connecting plate, the movable plate and the second connecting plate are all slidably connected with the guide rod, the rotating shaft body is installed at the top of the movable plate, a plurality of anti-vibration assemblies are symmetrically arranged between the first connecting plate and the movable plate and between the second connecting plate and the movable plate at equal intervals, and two adjusting assemblies are symmetrically arranged in the shaft sleeve; the adjusting assembly comprises a connecting block fixedly connected to the outer sides of the first connecting plate and the second connecting plate and a two-way lead screw rotationally connected between the inner wall of the top of the shaft sleeve and the inner wall of the bottom of the shaft sleeve. Through the structure, the rigidity of the first spring and the second spring can be adjusted so as to adjust the anti-vibration effect of the anti-vibration assembly, so that the anti-vibration mechanism has excellent durability and reliability, and the stable anti-vibration effect of the rotating shaft body is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of record players, in particular to a vibration-proof device for a main rotating shaft of a record player. Background Art

[0002] A record player generally refers to a phonograph, which is a relatively mature and classical sound playback device. Its broadcasting principle is: the record surface has arc-shaped grooves corresponding to the sound, which are engraved by acoustic methods. Then the record is placed on the turntable of the record player and rotated. The stylus contacts the surface of the record, thereby reading the corresponding sound signal and amplifying the signal, and then restoring and playing the sound signal in the record.

[0003] In the prior art, after searching, it was found that a Chinese patent disclosed a vibration-proof device for the main shaft of a record player turntable, and its application number is 202320024808.8. The above patent mainly includes a shaft sleeve, and the inner walls on both sides of the shaft sleeve are provided with sliding grooves, and the insides of the two sliding grooves are slidably connected with sliders, and an axle seat is fixedly connected between the two sliders. The top of the axle seat is equipped with a shaft body, and the shaft body is penetrated to the outside of the shaft sleeve, and a guide rod is penetrated on the slider. Although the above utility model can drive the slider to slide on the guide rod when the shaft body is subjected to the vibration of the turntable, and half of the slider slides inside the sliding groove, thereby generating a series of frictions, the vibration of the shaft body can be slowed down by friction, and under the action of the spring, the vibration reduction effect can be further improved. Since the slider generates friction in the sliding groove and on the guide rod, it is beneficial that the slider is not prone to secondary rebound and vibration under the action of the spring, which is convenient and practical. However, the above-mentioned record player turntable main shaft adopts spring elastic material to reduce vibration, and these traditional spring vibration-proof structures are prone to aging, deformation and other problems in long-term use, resulting in reduced vibration-proof effect and being easily disturbed by external vibration, thereby affecting the sound quality output of the record player. Therefore, those skilled in the art provide a vibration-proof device for the main shaft of a record player turntable to solve the problems raised in the above-mentioned background technology. Utility Model Content

[0004] The purpose of the utility model is to provide a vibration-proof device for the main shaft of a record player. By arranging a vibration-proof component between a first connecting plate, a second connecting plate and a movable plate, the vibration of the shaft body can be well absorbed and reduced, thereby effectively suppressing the vibration of the shaft body. At the same time, under the action of the arranged adjustment component, the rigidity of the first spring and the second spring can be adjusted, and the vibration-proof effect of the vibration-proof component can be conveniently adjusted, so that the vibration-proof mechanism has excellent durability and reliability, so as to ensure the stable vibration-proof effect of the shaft body, and the utility model has strong practicality.

[0005] To achieve the above-mentioned purpose, a vibration-proof device for a main rotating shaft of a record player is provided, comprising a shaft sleeve and a rotating shaft body arranged on the top of the shaft sleeve, wherein a first connecting plate, a movable plate, and a second connecting plate are arranged in sequence from top to bottom inside the shaft sleeve, three guide rods are symmetrically and fixedly connected inside the shaft sleeve, the first connecting plate, the movable plate, and the second connecting plate are all slidably connected to the guide rods, the rotating shaft body is installed on the top of the movable plate, a plurality of vibration-proof components are symmetrically arranged between the first connecting plate, the second connecting plate, and the movable plate, and two adjustment components are symmetrically arranged inside the shaft sleeve;

[0006] The adjustment assembly includes a connection block fixedly connected to the outer sides of the first connection plate and the second connection plate and a bidirectional screw rod rotatably connected between the top inner wall and the bottom inner wall of the sleeve, and the two connection blocks are symmetrically threadedly connected to the outer sides of the bidirectional screw rod;

[0007] A control component is disposed at the bottom of the second connecting plate, and the control component is used to drive the two bidirectional screw rods to rotate synchronously.

[0008] According to the vibration-isolating device for the main shaft of a record player, the control component includes a rotating rod rotatably connected between the inner walls of the sleeve and located on one side of the bidirectional lead screw, two worms symmetrically fixedly connected to the outside of the rotating rod, two worm wheels fixedly connected to the bottoms of the corresponding bidirectional lead screws, and a knob arranged on the outside of the sleeve, the worm wheels are meshedly connected to the adjacent worms, and one end of the rotating rod close to the knob passes through the interior of the sleeve and is fixedly connected to the knob.

[0009] According to the vibration-isolating device for the main shaft of a record player, the vibration-isolating component includes a first spring sleeved on the outside of the guide rod.

[0010] According to the vibration isolation device for the main shaft of a record player, the vibration isolation component also includes a fixed plate fixedly connected to the corresponding first connecting plate or the second connecting plate, a sliding rod slidably connected to the inside of the fixed plate, a slider fixedly connected to one end of the sliding rod, a second spring sleeved on the outside of the sliding rod and a connecting rod fixedly connected to the outside of the movable plate, and the side of the slider close to the connecting rod is set as an inclined structure, and the connecting rod slides in cooperation with the inclined structure.

[0011] According to the vibration-isolating device for the main shaft of a record player, a shaft ring is provided at the connection between the shaft body and the shaft sleeve, and the shaft ring is made of rubber.

[0012] According to the vibration-isolating device for the main shaft of a record player, the sliding blocks are all slidably connected to the surface of the corresponding first connecting plate or the second connecting plate.

[0013] The utility model has the following beneficial effects:

[0014] Compared with the prior art, the vibration-isolating device for the main rotating shaft of the record player is provided with a vibration-isolating assembly between the first connecting plate, the second connecting plate and the movable plate, which can well absorb and reduce the vibration of the rotating shaft body, thereby realizing effective suppression of the vibration of the rotating shaft body. At the same time, under the action of the provided adjustment assembly, the rigidity of the first spring and the second spring can be adjusted, and the vibration-isolating effect of the vibration-isolating assembly can be conveniently adjusted, so that the vibration-isolating mechanism has excellent durability and reliability, thereby ensuring a stable vibration-isolating effect of the rotating shaft body, and having strong practicality.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0017] Figure 1 It is a schematic diagram of the overall structure of a vibration-proof device for the main rotating shaft of a record player according to the utility model;

[0018] Figure 2 It is a schematic diagram of a first internal cross-sectional structure of a vibration-isolating device for a main rotating shaft of a record player according to the utility model;

[0019] Figure 3 The utility model is a second internal cross-sectional structural schematic diagram of a vibration-isolating device for a main shaft of a record player.

[0020] Legend:

[0021] 1. Bushing; 2. Rotating shaft body; 3. Movable plate; 4. First connecting plate; 5. Second connecting plate; 6. Guide rod; 7. First spring; 8. Connecting rod; 9. Sliding block; 10. Fixed plate; 11. Sliding rod; 12. Second spring; 13. Rotating rod; 14. Worm; 15. Worm wheel; 16. Knob; 17. Connecting block; 18. Bidirectional screw. DETAILED DESCRIPTION

[0022] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0023] Reference Figure 1 , Figure 2 and Figure 3The utility model embodiment is a vibration-proof device for the main rotating shaft of a record player, which includes a shaft sleeve 1 and a rotating shaft body 2 arranged on the top of the shaft sleeve 1. The interior of the shaft sleeve 1 is provided with a first connecting plate 4, a movable plate 3 and a second connecting plate 5 in sequence from top to bottom. The interior of the shaft sleeve 1 is symmetrically and equidistantly fixedly connected with three guide rods 6. The first connecting plate 4, the movable plate 3 and the second connecting plate 5 are all slidably connected to the guide rods 6. The rotating shaft body 2 is installed on the top of the movable plate 3. A plurality of vibration-proof components are symmetrically arranged between the first connecting plate 4, the second connecting plate 5 and the movable plate 3. The interior of the shaft sleeve 1 is symmetrically provided with two Adjustment assembly; the adjustment assembly includes a connection block 17 fixedly connected to the outside of the first connection plate 4 and the second connection plate 5 and a bidirectional screw 18 rotatably connected between the top inner wall and the bottom inner wall of the sleeve 1, and the two connection blocks 17 are symmetrically threadedly connected to the outside of the bidirectional screw 18; a control assembly is arranged at the bottom of the second connection plate 5, and the control assembly is used to drive the two bidirectional screws 18 to rotate synchronously. The vibration-proof assembly is arranged between the first connection plate 4, the second connection plate 5 and the movable plate 3, which can well absorb and reduce the vibration of the rotating shaft body 2, thereby effectively suppressing the vibration of the rotating shaft body 2. At the same time, the bidirectional screw 18 is driven to rotate by the control assembly, and the first connection plate 4 and the second connection plate 5 can be moved toward each other by the connection block 17 under the action of the rotating bidirectional screw 18, so that the vibration-proof effect of the vibration-proof assembly can be conveniently adjusted, so that the vibration-proof mechanism has excellent durability and reliability, so as to ensure the stable vibration-proof effect of the rotating shaft body 2, and has strong practicality.

[0024] The control component includes a rotating rod 13 rotatably connected between the inner walls of the sleeve 1 and located on one side of the bidirectional screw 18, two worms 14 symmetrically fixedly connected to the outside of the rotating rod 13, two worm wheels 15 fixedly connected to the bottom of the corresponding bidirectional screws 18, and a knob 16 arranged on the outside of the sleeve 1. The worm wheels 15 are meshed and connected with the adjacent worms 14. One end of the rotating rod 13 close to the knob 16 passes through the interior of the sleeve 1 and is fixedly connected with the knob 16. Rotating the knob 16 drives the rotating rod 13 to rotate, and the rotating rotating rod 13 drives the worm 14 to rotate, so that the worm wheel 15 can be better driven to rotate, so as to realize the rotation operation of the bidirectional screw 18, and the operation is simple.

[0025] The vibration-isolating assembly includes a first spring 7 sleeved on the outside of the guide rod 6. When the movable plate 3 is moved by the vibration of the shaft body 2, the vibration of the shaft body 2 can be buffered and absorbed under the action of the first spring 7, thereby effectively suppressing the vibration generated when the shaft body 2 rotates.

[0026] The vibration isolation assembly also includes a fixed plate 10 fixedly connected to the corresponding first connecting plate 4 or second connecting plate 5, a sliding rod 11 slidably connected to the inside of the fixed plate 10, a slider 9 fixedly connected to one end of the sliding rod 11, a second spring 12 sleeved on the outside of the sliding rod 11 and a connecting rod 8 fixedly connected to the outside of the movable plate 3. The side of the slider 9 close to the connecting rod 8 is set as an inclined structure, and the connecting rod 8 slides in cooperation with the inclined structure. When the movable plate 3 is vibrated up and down by the rotating shaft body 2, it drives the connecting rod 8 to slide on the inclined structure, so that the slider 9 can move horizontally. The moving slider 9 is buffered under the action of the second spring 12, thereby further improving the vibration reduction effect.

[0027] A shaft ring is provided at the connection between the shaft body 2 and the shaft sleeve 1. The shaft ring is made of rubber material and surrounds the outer side of the shaft body 2 to absorb and reduce the vibration generated by the shaft body 2 during rotation.

[0028] The sliders 9 are all slidably connected to the surfaces of the corresponding first connecting plates 4 or second connecting plates 5. When the connecting rod 8 pushes the corresponding sliders 9 to move, the sliding connection between the sliders 9 and the surfaces of the corresponding first connecting plates 4 or second connecting plates 5 can ensure the stability of the movement of the sliders 9.

[0029] Working principle: When the movable plate 3 is moved by the vibration of the rotating shaft body 2, the vibration of the rotating shaft body 2 can be buffered and absorbed under the action of the first spring 7, so that the vibration generated when the rotating shaft body 2 rotates can be effectively suppressed; the movable plate 3 is moved up and down by the vibration of the rotating shaft body 2, and at the same time drives the connecting rod 8 to slide on the inclined structure, so that the slider 9 can move horizontally, and the moving slider 9 is buffered under the action of the second spring 12, so that the vibration reduction effect can be further improved;

[0030] When it is necessary to adjust the rigidity of the first spring 7 and the second spring 12, the knob 16 is turned to drive the rotating rod 13 to rotate, and the rotating rotating rod 13 drives the worm 14 to rotate, so as to better drive the worm wheel 15 to rotate, so as to realize the rotation operation of the bidirectional screw rod 18. Under the action of the rotating bidirectional screw rod 18, the first connecting plate 4 and the second connecting plate 5 can be moved toward each other through the connecting block 17, so that the vibration isolation effect of the vibration isolation assembly can be conveniently adjusted, so that the vibration isolation mechanism has excellent durability and reliability, so as to ensure the stable vibration isolation effect of the shaft body 2 and strong practicality.

[0031] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A vibration-proof device for a main rotating shaft of a record player, comprising a shaft sleeve (1) and a rotating shaft body (2) arranged on the top of the shaft sleeve (1), characterized in that: The shaft sleeve (1) is provided with a first connecting plate (4), a movable plate (3) and a second connecting plate (5) in sequence from top to bottom. Three guide rods (6) are symmetrically and fixedly connected inside the shaft sleeve (1). The first connecting plate (4), the movable plate (3) and the second connecting plate (5) are all slidably connected to the guide rods (6). The rotating shaft body (2) is installed on the top of the movable plate (3). A plurality of vibration-isolating components are symmetrically and equidistantly provided between the first connecting plate (4) and the second connecting plate (5) and the movable plate (3). Two adjustment components are symmetrically provided inside the shaft sleeve (1); the adjustment components include a connecting block (17) fixedly connected to the outside of the first connecting plate (4) and the second connecting plate (5) and a bidirectional screw rod (18) rotatably connected between the top inner wall and the bottom inner wall of the shaft sleeve (1). The two connecting blocks (17) are symmetrically threadedly connected to the outside of the bidirectional screw rod (18); a control component is provided at the bottom of the second connecting plate (5), and the control component is used to drive the two bidirectional screw rods (18) to rotate synchronously.

2. A vibration-proof device for a main shaft of a record player according to claim 1, characterized in that: The control assembly comprises a rotating rod (13) rotatably connected between the inner walls of the shaft sleeve (1) and located on one side of the bidirectional screw (18), two worms (14) symmetrically fixedly connected to the outside of the rotating rod (13), two worm wheels (15) fixedly connected to the bottoms of the corresponding bidirectional screws (18), and a knob (16) arranged on the outside of the shaft sleeve (1), wherein the worm wheels (15) are meshingly connected to adjacent worms (14), and one end of the rotating rod (13) close to the knob (16) passes through the interior of the shaft sleeve (1) and is fixedly connected to the knob (16).

3. A vibration-proof device for a main shaft of a record player according to claim 2, characterized in that: The vibration-isolating assembly comprises a first spring (7) sleeved on the outside of the guide rod (6).

4. A vibration-proof device for a main shaft of a record player according to claim 3, characterized in that: The vibration isolation assembly also includes a fixed plate (10) fixedly connected to the corresponding first connecting plate (4) or second connecting plate (5), a sliding rod (11) slidably connected to the inside of the fixed plate (10), a slider (9) fixedly connected to one end of the sliding rod (11), a second spring (12) sleeved on the outside of the sliding rod (11) and a connecting rod (8) fixedly connected to the outside of the movable plate (3), wherein the side of the slider (9) close to the connecting rod (8) is arranged as an inclined structure, and the connecting rod (8) slides in cooperation with the inclined structure.

5. The vibration-proof device for the main shaft of a record player according to claim 4, characterized in that: A shaft ring is provided at the connection between the rotating shaft body (2) and the shaft sleeve (1), and the shaft ring is made of rubber.

6. The vibration-isolating device for the main shaft of a record player according to claim 5, characterized in that: The sliding blocks (9) are all slidably connected to the surface of the corresponding first connecting plate (4) or the second connecting plate (5).

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