Recording player convenient for speed measurement

Abstract

The invention discloses a disc player convenient for speed measurement, and relates to the technical field of disc players. The disc comprises a disc base, and a speed measuring mechanism and an adjusting mechanism are arranged in the disc base. A rotating shaft is arranged at the inner bottom of the disc base, the speed measuring mechanism comprises a rotating cylinder rotationally installed at the inner bottom of the disc base, the rotating shaft is located in the rotating cylinder, a spiral groove is formed in the surface of the rotating cylinder, a testing block is arranged at the inner bottom of the disc base, and a pressure detector is arranged at the inner bottom of the disc base. By means of the arranged speed measuring mechanism, the rotating speed of the rotating shaft can be automatically detected when a user starts the disc player every time, if the rotating speed is normal, automatic reset can be achieved, the user can conveniently measure the speed of the disc player, a grating disc does not need to be used for measuring the speed, and meanwhile problems can be found in the early stage; and further damage to the record and the equipment caused by long-time inaccurate rotating speed is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of record player equipment, and particularly relates to a record player facilitating speed measurement. Background Art

[0002] Another name for a record player is a phonograph. A phonograph is a primitive sound playback device, where the sound is stored in an arc-shaped groove engraved on the record surface by an acoustic method. The record is placed on a turntable and rotates under the stylus. Phonograph records can be replicated relatively easily in large quantities, and the playback time is also longer than that of most cylindrical recording media.

[0003] In the patent (application number: CN201610805708.3), a record player facilitating speed measurement is disclosed, which is characterized in that: it includes a base body, a drive motor assembly is arranged inside the base body, and a turntable connected to the drive motor assembly and used for placing the record is provided. A grating is arranged on the turntable, and an optocoupler corresponding to the grating and used for detecting the rotation speed of the turntable is fixedly arranged on the base body. This record player facilitating speed measurement has a device for detecting the rotation speed of the record, and can accurately control the rotation speed of the record according to needs, so as to modulate wonderful music. The following technical problems exist between this patent and the prior art during actual use: When measuring the speed of the record player, it is necessary for the staff to place the grating disk on the record player, and then check whether the rotation speed of the record player is abnormal through light. Since the speed measurement of the record player is usually carried out at intervals, when it is found that the rotation speed of the record player is abnormal, the record and the record needle have already been damaged to a certain extent due to the abnormal rotation speed. Summary of the Invention

[0004] The purpose of the present invention is: to solve the above problems, the present invention provides a record player facilitating speed measurement.

[0005] The present invention specifically adopts the following technical solutions to achieve the above purpose: A record player facilitating speed measurement, including a record base, wherein a speed measurement mechanism and an adjustment mechanism are arranged inside the record base; The inner bottom of the record base is provided with a rotating shaft. The speed measuring mechanism includes a rotating cylinder rotatably installed at the inner bottom of the record base. The rotating shaft is located inside the rotating cylinder. The surface of the rotating cylinder is provided with a spiral groove. The inner bottom of the record base is provided with a test block. The inner bottom of the record base is provided with a pressure detector. The pressure detector and the test block are at the same horizontal angle. The test block and the pressure detector can slide horizontally inside the record base. A sliding block is slidably connected to the inside of the rotating cylinder through the spiral groove. A connecting ring is arranged on the surface of the rotating cylinder. The inner wall of the connecting ring is fixedly connected to the sliding block. A first connecting piece is arranged on one side of the connecting ring. A second connecting piece is fixedly installed on the top of the test block. A rotating rod is rotatably installed between the first connecting piece and the second connecting piece; A matching cylinder is fixedly installed at the bottom of the rotating shaft. An electromagnet is fixedly installed on the inner top of the matching cylinder. Two sides of the matching cylinder are slidably installed with extended matching blocks. The matching cylinder is rotatably connected to the inner bottom of the record base. A matching ring is fixedly installed on the inner wall of the rotating cylinder. A plurality of groups of engaging blocks are fixedly installed on the inner wall of the matching ring and are arranged annularly. When the matching blocks extend out, they can be engaged with the engaging blocks. A rotating disc is arranged on the top of the record base. The rotating shaft can drive the rotating disc to rotate.

[0006] Further, the adjusting mechanism includes sliding grooves opened inside the rotating disc. There are four groups of sliding grooves arranged annularly. The rotating disc is slidably installed with locking blocks through the sliding grooves.

[0007] Further, one side of the locking block close to the rotating disc is fixedly installed with a connecting rod. A return spring is sleeved on the surface of the connecting rod.

[0008] Further, a rotating block is fixedly installed on the top of the rotating shaft. A locking groove is opened on the surface of the rotating block. The locking groove can cooperate with the locking block.

[0009] Further, the locking block is located inside the rotating disc. A pushing ring is fixedly installed on the top of the connecting ring. The surface of the locking block in contact with the top of the pushing ring is provided with a matching inclined surface. An annular groove is opened on the surface of the connecting ring. The first connecting piece is slidably connected to the connecting ring through the annular groove. There is a certain frictional force between the first connecting piece and the annular groove.

[0010] Further, a connecting groove is opened on the inner bottom of the record base. The test block and the pressure detector are slidably connected to the record base through the connecting groove.

[0011] Further, a limiting rod is fixedly installed on the side of the pressure detector away from the test block. The limiting rod penetrates and extends into the record base. A connecting spring is sleeved on the surface of the limiting rod.

[0012] Further, a driving motor is fixedly installed at the bottom of the record base, and the output end of the driving motor is fixedly connected to a matching cylinder.

[0013] Further, the spiral groove is set to have at least ten turns, and the pressure detector is electrically connected to the electromagnet.

[0014] The beneficial effects of the present invention are as follows: 1. By using the provided speed measurement mechanism, the present invention can automatically detect the rotation speed of the rotating shaft every time the user starts the record player. If the rotation speed is normal, it will automatically reset, which is convenient for the user to measure the speed without using a grating disc for speed measurement. At the same time, problems can be detected early to avoid further damage to the record and the device itself caused by inaccurate rotation speed for a long time.

[0015] 2. By using the provided adjustment mechanism, when the rotation speed of the rotating shaft is abnormal, the rotating disc will lose the driving source, thereby driving the record to stop rotating. When the rotation speed of the record player is abnormal, it can stop the rotation of the record in time, effectively preventing the situation where when the rotation speed of the record player is slightly too fast or slightly too slow, the user is difficult to detect the abnormality of the rotation speed, and when it is discovered later, the record and the record needle have been damaged due to the abnormal rotation speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the whole of the present invention; Figure 2 is a schematic diagram of the rotating disc of the present invention; Figure 3 is the present invention Figure 2 schematic diagram at position A in; Figure 4 is a schematic diagram of the matching cylinder of the present invention; Figure 5 is the present invention Figure 4 schematic diagram at position B in; Figure 6 is a schematic diagram of the rotating rod of the present invention; Figure 7 is a schematic diagram of the rotating cylinder of the present invention; Figure 8 is a schematic diagram of the electromagnet of the present invention.

[0017] Reference numerals: 1, record base; 2, speed measuring mechanism; 201, rotating cylinder; 202, spiral groove; 203, test block; 204, pressure detector; 205, sliding block; 206, connecting ring; 207, first connecting member; 208, second connecting member; 209, rotating rod; 3, adjusting mechanism; 301, sliding groove; 302, locking block; 303, connecting rod; 304, return spring; 305, rotating block; 306, locking groove; 4, rotating shaft; 5, fitting cylinder; 6, electromagnet; 7, fitting block; 8, fitting ring; 9, engaging block; 10, rotating disk; 11, annular groove; 12, connecting groove; 13, limiting rod; 14, pushing ring; 15, connecting spring. Detailed implementation

[0018] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0019] A record player facilitating speed measurement according to a preferred embodiment of the present invention will be elaborated in detail below.

[0020] Embodiment 1, as Figures 1-8 shown, includes a record base 1, and a speed measuring mechanism 2 and an adjusting mechanism 3 are arranged inside the record base 1; A rotating shaft 4 is arranged at the inner bottom of the record base 1. The speed measuring mechanism 2 includes a rotating cylinder 201 rotatably installed at the inner bottom of the record base 1. The rotating shaft 4 is located inside the rotating cylinder 201. A spiral groove 202 is formed on the surface of the rotating cylinder 201. A test block 203 is arranged at the inner bottom of the record base 1. A pressure detector 204 is arranged at the inner bottom of the record base 1. The pressure detector 204 and the test block 203 are at the same horizontal angle. The test block 203 and the pressure detector 204 can slide horizontally inside the record base 1. A sliding block 205 is slidably connected to the inside of the rotating cylinder 201 through the spiral groove 202. A connecting ring 206 is arranged on the surface of the rotating cylinder 201. The inner wall of the connecting ring 206 is fixedly connected to the sliding block 205. A first connecting member 207 is arranged on one side of the connecting ring 206. A second connecting member 208 is fixedly installed on the top of the test block 203. A rotating rod 209 is rotatably installed between the first connecting member 207 and the second connecting member 208; A fitting cylinder 5 is fixedly installed at the bottom of the rotating shaft 4. An electromagnet 6 is fixedly installed at the inner top of the fitting cylinder 5. Two sides of the fitting cylinder 5 are slidably installed with extended fitting blocks 7. The fitting cylinder 5 is rotatably connected to the inner bottom of the record base 1. A fitting ring 8 is fixedly installed on the inner wall of the rotating cylinder 201. An engaging block 9 is fixedly installed on the inner wall of the fitting ring 8. A number of groups of the engaging blocks 9 are annularly arranged. When the fitting blocks 7 extend out, they can be engaged with the engaging blocks 9. A rotating disk 10 is arranged on the top of the record base 1. The rotating shaft 4 can drive the rotating disk 10 to rotate; After the user places the record on the surface of the turntable 10, connects the record needle to the record, and then connects the power supply of the record base 1. At this time, when the matching cylinder 5 rotates, it drives the rotating shaft 4 to rotate synchronously. The rotating shaft 4 drives the turntable 10 to rotate synchronously. When the turntable 10 rotates, it drives the record to rotate synchronously, and music is emitted after contacting the record needle. During the rotation of the matching cylinder 5, the matching block 7 inside the matching cylinder 5 engages with the engaging block 9 inside the engaging ring 8. During rotation, it will push the engaging block 9 to drive the engaging ring 8 to rotate, thereby driving the rotating cylinder 201 to rotate synchronously. When the rotating cylinder 201 rotates, due to the spiral groove 202 provided on its surface, when the rotating cylinder 201 rotates, the sliding block 205 slidably connected to its surface moves vertically upward under the action of the spiral groove 202. While it is moving vertically upward, it drives the test block 203 to move toward the pressure detector 204 through the first connecting member 207, the rotating rod 209, and the second connecting member 208. When the sliding block 205 moves to the eighth turn of the spiral groove 202, the test block 203 will contact the pressure detector 204 under the drive of the rotating rod 209. At this time, the pressure detector 204 will detect the pressure in contact with the test block 203. If the contact pressure is within the preset threshold, it means that the rotation speed of the record player is normal, and the pressure detector 204 controls the electromagnet 6 to start. The electromagnet 6 adsorbs the matching blocks 7 on both sides to fit with it through magnetic force. During this process, the matching block 7 gradually disengages from the engaging block 9. The rotating cylinder 201 will lose the driving source due to the separation of the matching block 7 and the engaging block 9. Immediately, the connecting ring 206 moves downward to drive the test block 203 to reset. Every time the user starts the record player, it can automatically detect the rotation speed of the rotating shaft 4. If the rotation speed is normal, it will automatically reset, which is convenient for the user to measure its speed. There is no need to use a grating disc for speed measurement, and problems can be detected early to avoid further damage to the record and the device itself caused by inaccurate rotation speed for a long time.

[0021] Example 2, as Figures 1-7As shown in the figure, the adjusting mechanism 3 includes a sliding groove 301 opened inside the rotating disk 10. There are four groups of sliding grooves 301 arranged annularly. The rotating disk 10 is slidably installed with a locking block 302 through the sliding groove 301. One side of the locking block 302 close to the rotating disk 10 is fixedly installed with a connecting rod 303. A return spring 304 is sleeved on the surface of the connecting rod 303. The top of the rotating shaft 4 is fixedly installed with a rotating block 305. A locking groove 306 is opened on the surface of the rotating block 305. The locking groove 306 can cooperate with the locking block 302. The locking block 302 is located inside the rotating disk 10. The top of the connecting ring 206 is fixedly installed with a pushing ring 14. The surface of the bottom of the locking block 302 in contact with the top of the pushing ring 14 is provided with a matching inclined surface. An annular groove 11 is opened on the surface of the connecting ring 206. The first connecting piece 207 is slidably connected with the connecting ring 206 through the annular groove 11. There is a certain frictional force between the first connecting piece 207 and the annular groove 11; When the pressure detector 204 detects that the pressure in contact with the test block 203 exceeds or is lower than the preset threshold value, as the rotating cylinder 201 continues to rotate, the connecting ring 206 will continue to move upward, thereby driving the pushing ring 14 to extend out from the record base 1 and cooperate with the inclined surface on the surface of the locking block 302. The continuous upward movement of the pushing ring 14 will push the locking block 302 to move outward through the sliding groove 301, and at the same time squeeze the return spring 304 to contract. Since the locking block 302 continues to move outward, it will move out of the locking groove 306 opened on the surface of the rotating block 305. At this time, when the rotating shaft 4 drives the rotating block 305 to rotate, it can no longer drive the rotating disk 10 to rotate through the locking block 302. When the sliding block 205 moves to the top of the spiral groove 202, the spiral groove 202 will drive the sliding block 205 to rotate synchronously. The sliding block 205 drives the connecting ring 206 to rotate synchronously. At this time, the first connecting piece 207 will rotate on the surface of the annular groove 11, which can make the rotating disk 10 lose the driving source in the case of abnormal rotation speed of the rotating shaft 4, thereby driving the record to stop rotating. It can stop the rotation of the record in time in the case of abnormal rotation speed of the record player, and can effectively prevent the situation that when the rotation speed of the record player is slightly too fast or slightly too slow, the user is difficult to detect the abnormal rotation speed, and when it is discovered later, the record and the record needle have been damaged due to the abnormal rotation speed.

[0022] Embodiment 3, as Figures 6-7 shown, the inner bottom of the record base 1 is provided with a connecting groove 12. The test block 203 and the pressure detector 204 are slidably connected with the record base 1 through the connecting groove 12; The arranged connecting groove 12 can enable the test block 203 to move horizontally. At the same time, when the rotation speed is abnormal, the test block 203 can drive the pressure detector 204 to move a certain distance, providing space for the adjusting mechanism 3.

[0023] Embodiment 4, as shown in the figureFigure 7 As shown in the figure, a limiting rod 13 is fixedly installed on one side of the pressure detector 204 away from the test block 203. The limiting rod 13 penetrates and extends into the record base 1, and a connecting spring 15 is sleeved on the surface of the limiting rod 13; The provided connecting spring 15 can contract due to elastic potential energy when the pressure detector 204 is subjected to a thrust force. When the pressure detector 204 loses the thrust force, it automatically bounces up to drive the pressure detector 204 to reset.

[0024] Embodiment 5, as Figures 1-8 shown in the figure, a driving motor is fixedly installed at the bottom of the record base 1. The output end of the driving motor is fixedly connected to the fitting cylinder 5. The spiral groove 202 is provided with at least ten turns, and the pressure detector 204 is electrically connected to the electromagnet 6; The provided driving motor can drive the fitting cylinder 5 to rotate, thereby driving the record to rotate. By using the pressure detector 204 to control the opening and closing of the electromagnet 6, a timely reaction can be made when the rotation speed is abnormal.

[0025] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A record player for convenient speed measurement, comprising a record base (1), characterized in that: The record base (1) is provided with a speed measuring mechanism (2) and an adjusting mechanism (3) inside; The inner bottom of the record base (1) is provided with a rotating shaft (4); the speed measuring mechanism (2) comprises a rotating cylinder (201) rotatably mounted on the inner bottom of the record base (1); the rotating shaft (4) is located inside the rotating cylinder (201); a spiral groove (202) is provided on the surface of the rotating cylinder (201); a test block (203) is provided on the inner bottom of the record base (1); a pressure detector (204) is provided on the inner bottom of the record base (1); the pressure detector (204) and the test block (203) are at the same horizontal angle; the test block (203) and the pressure detector (204) are at the same horizontal angle. 4) capable of sliding horizontally inside the record base (1); the interior of the rotating cylinder (201) is slidably connected to a sliding block (205) via a spiral groove (202); a connecting ring (206) is provided on the surface of the rotating cylinder (201); the inner wall of the connecting ring (206) is fixedly connected to the sliding block (205); a first connecting member (207) is provided on one side of the connecting ring (206); a second connecting member (208) is fixedly installed on the top of the test block (203); and a rotating rod (209) is rotatably installed between the first connecting member (207) and the second connecting member (208); A matching cylinder (5) is fixedly mounted on the bottom of the rotating shaft (4), an electromagnet (6) is fixedly mounted on the inner top of the matching cylinder (5), matching blocks (7) extending out are slidably mounted on both sides of the matching cylinder (5), the matching cylinder (5) is rotatably connected to the inner bottom of the record base (1), a matching ring (8) is fixedly mounted on the inner wall of the rotating cylinder (201), a locking block (9) is fixedly mounted on the inner wall of the locking ring (8), a plurality of groups of locking blocks (9) are arranged in an annular shape, and the matching blocks (7) can be locked with the locking blocks (9) when extended, a rotating disk (10) is arranged on the top of the record base (1), and the rotating shaft (4) can drive the rotating disk (10) to rotate.

2. A record player for convenient speed measurement according to claim 1, characterized in that: The adjustment mechanism (3) comprises a sliding groove (301) provided inside the rotating disk (10), wherein the sliding groove (301) is provided in four groups in an annular shape, and a locking block (302) is slidably mounted on the rotating disk (10) through the sliding groove (301).

3. A record player for convenient speed measurement according to claim 1, characterized in that: A connecting rod (303) is fixedly mounted on one side of the locking block (302) close to the rotating disk (10), and a return spring (304) is sleeved on the surface of the connecting rod (303).

4. A record player for convenient speed measurement according to claim 1, characterized in that: A rotating block (305) is fixedly mounted on the top of the rotating shaft (4), and a locking groove (306) is provided on the surface of the rotating block (305), and the locking groove (306) can cooperate with the locking block (302).

5. A record player for convenient speed measurement according to claim 2, characterized in that: The locking block (302) is located inside the rotating disk (10); a pushing ring (14) is fixedly mounted on the top of the connecting ring (206); the bottom of the locking block (302) and the surface in contact with the top of the pushing ring (14) are provided with a matching inclined surface; an annular groove (11) is provided on the surface of the connecting ring (206); the first connecting member (207) is slidably connected to the connecting ring (206) via the annular groove (11); and a certain friction force exists between the first connecting member (207) and the annular groove (11).

6. A record player for convenient speed measurement according to claim 1, characterized in that: The inner bottom of the record base (1) is provided with a connection groove (12), and the test block (203) and the pressure detector (204) are slidably connected to the record base (1) via the connection groove (12).

7. A record player for convenient speed measurement according to claim 1, characterized in that: A limiting rod (13) is fixedly mounted on one side of the pressure detector (204) away from the test block (203); the limiting rod (13) penetrates and extends into the interior of the record base (1); a connecting spring (15) is sleeved on the surface of the limiting rod (13).

8. A record player for convenient speed measurement according to claim 1, characterized in that: A driving motor is fixedly mounted on the bottom of the record base (1), and an output end of the driving motor is fixedly connected to the matching cylinder (5).

9. A record player for convenient speed measurement according to claim 1, characterized in that: The spiral groove (202) is configured to have at least ten turns, and the pressure detector (204) is electrically connected to the electromagnet (6).

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