A magnetic tape drive mechanism and a magnetic tape recorder / player

Abstract

The utility model provides a kind of tape recorder movement and tape recorder, relate to tape recording and playing technical field.Tape recorder movement includes substrate, magnetic head assembly, tape pressing wheel assembly, dialing component, half gear, first flywheel assembly, transmission gear assembly, first motor, second flywheel assembly and second motor.Magnetic head assembly and tape pressing wheel assembly are movably arranged on substrate, and magnetic head assembly includes playback head, and tape pressing wheel assembly includes first tape pressing wheel and second tape pressing wheel.Dialing component is arranged on substrate, and it is respectively supported magnetic head assembly and tape pressing wheel assembly.Half gear is rotatably arranged on substrate, and it pushes dialing component when rotating.The above-mentioned tape recorder movement is cooperated by first motor and second motor, which can make tape playback in forward direction, and also can make tape playback in reverse direction, without user taking out tape and inserting tape in reverse direction, and operation is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of magnetic tape recording and playback technology, and in particular to a magnetic tape drive mechanism and a magnetic tape recorder / playback machine. Background Technology

[0002] Existing tape drives typically only allow playback in one direction. If a user wants to play the tape in reverse, they must first remove the tape, then insert it back into the drive in the opposite direction, and then play it again, which is extremely inconvenient. Utility Model Content

[0003] In order to solve the problems existing in the prior art, one of the objectives of this utility model is to provide a magnetic tape drive mechanism.

[0004] This utility model provides the following technical solution: A magnetic tape drive mechanism, comprising: substrate; A magnetic head assembly, movably disposed on the substrate, the magnetic head assembly including a sound-emitting magnetic head; A pressure roller assembly, wherein the pressure roller assembly is movably disposed on the substrate, and the pressure roller assembly includes a first pressure roller and a second pressure roller; A toggle assembly is disposed on the substrate and abuts against the magnetic head assembly and the pressure roller assembly, respectively; A half-gear, which is rotatably mounted on the base plate and pushes against the actuating assembly when rotated; A first flywheel assembly, comprising a first axle, a first flywheel, and a first gear interconnected with each other, wherein the first axle is rotatably mounted on the base plate; A transmission gear assembly, wherein the first gear meshes with the half gear via the transmission gear assembly; A first motor, the drive end of which is connected to the first flywheel; A second flywheel assembly, comprising a second axle and a second flywheel interconnected, the second axle being rotatably mounted on the base plate; and The second motor, the drive end of the second motor is connected to the second flywheel; The actuating component is used to actuate the magnetic head assembly and the pressure roller assembly, so that the playback magnetic head contacts the magnetic tape, the first pressure roller abuts against the first roller shaft through the magnetic tape, and the second pressure roller abuts against the second roller shaft through the magnetic tape.

[0005] As a further alternative to the magnetic tape drive mechanism, the transmission gear assembly includes a second gear, a third gear, a bracket, and a fourth gear; The second gear and the third gear are rotatably disposed on the substrate, the third gear including a first tooth and a second tooth, the first gear, the second gear and the first tooth meshing in sequence; The bracket is rotatably mounted on the base plate about the rotation axis of the third gear, and the fourth gear is rotatably mounted on the bracket. The second tooth, the fourth gear, and the half gear mesh in sequence.

[0006] As a further optional embodiment of the magnetic tape drive mechanism, a fifth gear and a magnetic tape wheel are provided on the substrate, the fifth gear being rotatably mounted on the substrate, and the magnetic tape wheel being connected to the fifth gear; When the bracket rotates about the rotation axis of the third gear, the fourth gear meshes with the half gear and the fifth gear in sequence; When the fourth gear meshes with the fifth gear, the linear velocity of the magnetic tape reel is greater than the linear velocity of the first flywheel.

[0007] As a further optional embodiment of the tape drive mechanism, the tape drive mechanism further includes a controller, which is electrically connected to the first motor and the second motor respectively; The controller is used to monitor the first current of the first motor and control the first motor to stop urgently when the first current exceeds a preset current; and / or The controller is used to monitor the second current of the second motor and control the second motor to stop suddenly when the second current exceeds a preset current.

[0008] As a further optional embodiment of the tape drive mechanism, the first motor and / or the second motor includes: Support; A motherboard, which is disposed on the support; Stator, the stator comprising an iron core and a coil, the iron core being disposed on the support, the coil being wound around the iron core and electrically connected to the main board; and The rotor includes a housing and a magnetic component. The housing is rotatably mounted on the support, and the magnetic component is mounted on the housing and surrounds the iron core.

[0009] As a further optional solution for the magnetic tape drive mechanism, the stator is provided with a plurality of solder joints, and the support is provided with clearance holes, the clearance holes being provided corresponding to the solder joints.

[0010] As a further alternative to the magnetic tape drive mechanism, the stator is covered with an insulating adhesive layer.

[0011] As a further alternative to the magnetic tape drive mechanism, the insulating layer is a thermally conductive insulating layer.

[0012] As a further optional embodiment of the magnetic tape drive mechanism, the support is plate-shaped, and the thickness of the support is D1, where D1 ≤ 1 mm; and / or, The wall thickness of the outer shell is H1, where H1 ≤ 0.6 mm; and / or, The thickness of the outer shell along its own axis of rotation is D2, where D2 ≤ 4.5 mm; and / or, The thickness of the first motor and / or the second motor is D3, where D3≤7mm.

[0013] As a further alternative to the tape drive mechanism, the head assembly further includes a recording head, and the actuating component is also used to actuate the head assembly to bring the recording head into contact with the tape.

[0014] As a further optional embodiment of the magnetic tape drive mechanism, the magnetic head assembly further includes a magnetic head mounting base, which is slidably disposed on the substrate, and both the playback magnetic head and the recording magnetic head are disposed on the magnetic head mounting base; The actuating component is used to actuate the head mount so that the head mount slides toward the magnetic tape.

[0015] As a further optional embodiment of the tape drive mechanism, the pressure roller assembly further includes a first pressure roller bracket and a second pressure roller bracket; The first pressure roller bracket is rotatably mounted on the substrate, and the first pressure roller is rotatably mounted on the first pressure roller bracket; The second pressure roller bracket is rotatably mounted on the base plate, and the second pressure roller is rotatably mounted on the second pressure roller bracket; The actuating component is used to actuate the first pressure roller bracket to make the first pressure roller bracket swing toward the first wheel axle. The actuating component is also used to actuate the second pressure roller bracket to make the second pressure roller bracket swing toward the second wheel axle.

[0016] As a further optional embodiment of the tape drive mechanism, the actuation assembly includes a first actuating element and a second actuating element; The first actuating member is rotatably disposed on the substrate. The first actuating member includes a first end and a second end, and the second end abuts against the magnetic head assembly in the direction toward the magnetic tape. The second actuating member is rotatably disposed on the substrate. The second actuating member includes a third end and a fourth end, and the fourth end abuts against the pressure roller assembly in the direction toward the first flywheel. When the half gear rotates, it pushes against the first end, and through the first end, it pushes against the third end.

[0017] As a further alternative to the tape drive mechanism, the first end and the third end are interference-fitted.

[0018] Another objective of this invention is to provide a magnetic tape recorder / player.

[0019] This utility model provides the following technical solution: A magnetic tape recorder / player includes the aforementioned magnetic tape drive mechanism.

[0020] The embodiments of this utility model have the following beneficial effects: When the aforementioned tape drive mechanism is operating, the first motor rotates forward, driving the first flywheel to rotate. The first flywheel drives the first axle and the first gear to rotate. The first gear, through a transmission gear assembly, drives the half gear to rotate, causing the half gear to push against the actuating assembly. The actuating assembly further actuates the head assembly and the pressure roller assembly, causing the playback head to contact the tape, while the first pressure roller, through the tape, abuts against the first axle. At this point, the friction between the first axle and the tape pulls the tape forward for playback. Alternatively, the first motor rotates forward, driving the first flywheel to rotate, which drives the first gear to rotate. The first gear, through the transmission gear assembly, drives the half gear to rotate, causing the half gear to push against the actuating assembly. The actuating assembly further actuates the head assembly and the pressure roller assembly, causing the playback head to contact the tape, while the second pressure roller, through the tape, abuts against the second axle. Subsequently, the first motor stops rotating, and the second motor rotates in reverse, driving the second flywheel to rotate. The second flywheel drives the second axle to rotate. At this point, the friction between the second axle and the tape pulls the tape backward for playback. Therefore, the aforementioned tape drive mechanism, through the cooperation of the first and second motors, can play sound by rotating the tape forward or backward, eliminating the need for the user to remove the tape or insert it in reverse, making operation much simpler.

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This diagram shows an overall structural schematic of a magnetic tape drive mechanism provided in an embodiment of the present invention; Figure 2 This diagram shows a schematic structural diagram of a magnetic tape drive mechanism provided in an embodiment of the present invention from another perspective; Figure 3 This diagram illustrates the connection relationship between the first flywheel assembly and the first motor, and between the second flywheel assembly and the second motor, in a magnetic tape drive mechanism according to an embodiment of the present invention. Figure 4 This diagram illustrates the structure of a motor in a magnetic tape drive mechanism according to an embodiment of the present invention. Figure 5 This illustration shows a cross-sectional schematic diagram of a motor in a magnetic tape drive mechanism according to an embodiment of the present invention; Figure 6 This diagram illustrates the structure of a transmission gear assembly in a magnetic tape drive mechanism according to an embodiment of the present invention. Figure 7 This diagram illustrates the structure of a toggle assembly in a magnetic tape drive mechanism according to an embodiment of the present invention.

[0024] Explanation of key component symbols: 100-Baseboard; 110-Fifth Gear; 120-Magnetic Tape Reel; 200-Head Assembly; 210-Playback Head; 220-Recording Head; 230-Head Mount; 300-Pressure Roller Assembly; 310-First Pressure Roller; 320-Second Pressure Roller; 330-First Pressure Roller Support; 340-Second Pressure Roller Support; 400-Actuating Assembly; 410-First Actuating Member; 411-First End; 412-Second End; 413-Pushing Surface; 414-Locking Surface; 420-Second Actuating Member; 421-Third End; 422-Fourth End; 500-Half Gear; 600-First Flywheel Assembly; 610-First Axle; 620-First Flywheel; 630-First... Gear; 700-Transmission gear assembly; 710-Second gear; 720-Third gear; 721-First tooth; 722-Second tooth; 730-Bracket; 740-Fourth gear; 800-First motor; 810-Support; 811-Protrusion; 812-Allowing hole; 820-Main board; 830-Stator; 831-Iron core; 832-Coil; 840-Rotor; 841-Housing; 842-Magnetic component; 850-Bearing; 860-Shaft core; 870-Washer; 880-Drive wheel; 900-Second flywheel assembly; 910-Second axle; 920-Second flywheel; 1000-Second motor; 1100-First belt; 1200-Second belt. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] It should be noted that when an element is said to be "fixed" to another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly" on another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] Unless otherwise defined, 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 application belongs. The terminology used herein in the template description is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] Example Please refer to the following: Figure 1 and Figure 2This embodiment provides a magnetic tape drive mechanism, specifically a magnetic tape drive mechanism that uses dual motors to achieve forward and reverse magnetic tape playback. The magnetic tape drive mechanism includes a base plate 100, a magnetic head assembly 200, a pressure roller assembly 300, a toggle assembly 400, a half gear 500, a first flywheel assembly 600, a transmission gear assembly 700, a first motor 800, a second flywheel assembly 900, and a second motor 1000.

[0031] The magnetic head assembly 200 and the pressure roller assembly 300 are both movably disposed on the substrate 100. The magnetic head assembly 200 includes a sound-emitting magnetic head 210, and the pressure roller assembly 300 includes a first pressure roller 310 and a second pressure roller 320.

[0032] A toggle assembly 400 is disposed on the base plate 100 and abuts against the magnetic head assembly 200 and the pressure roller assembly 300, respectively. Correspondingly, a half gear 500 is rotatably disposed on the base plate 100 and pushes the toggle assembly 400 when rotating.

[0033] Please combine Figure 3 The first flywheel assembly 600 includes a first axle 610, a first flywheel 620, and a first gear 630 connected to each other. The first axle 610 is rotatably mounted on the base plate 100. The first gear 630 meshes with a half gear 500 via a transmission gear assembly 700. The drive end of the first motor 800 is connected to the first flywheel 620.

[0034] The second flywheel assembly 900 includes a second axle 910 and a second flywheel 920 connected to each other. The second axle 910 is rotatably mounted on the base plate 100. The drive end of the second motor 1000 is connected to the second flywheel 920.

[0035] The actuating assembly 400 is used to actuate the magnetic head assembly 200 and the pressure roller assembly 300 so that the playback magnetic head 210 contacts the magnetic tape, the first pressure roller 310 abuts against the first roller shaft 610 via the magnetic tape, and the second pressure roller 320 abuts against the second roller shaft 910 via the magnetic tape.

[0036] When the aforementioned tape drive mechanism is operating, the first motor 800 rotates forward and drives the first flywheel 620 to rotate. The first flywheel 620 drives the first shaft 610 and the first gear 630 to rotate. The first gear 630 drives the half gear 500 to rotate through the transmission gear assembly 700, causing the half gear 500 to push the actuating assembly 400. The actuating assembly 400 further actuates the magnetic head assembly 200 and the pressure roller assembly 300, causing the playback magnetic head 210 to contact the magnetic tape, while the first pressure roller 310 abuts against the first shaft 610 through the magnetic tape. At this time, the friction between the first shaft 610 and the magnetic tape can be used to pull the magnetic tape to rotate forward and play sound.

[0037] Alternatively, the first motor 800 rotates forward and drives the first flywheel 620 to rotate, which in turn drives the first gear 630 to rotate. The first gear 630 drives the half gear 500 to rotate via the transmission gear assembly 700, causing the half gear 500 to push the actuating assembly 400. The actuating assembly 400 further actuates the magnetic head assembly 200 and the pressure roller assembly 300, causing the playback magnetic head 210 to contact the magnetic tape, while simultaneously causing the second pressure roller 320 to abut against the second shaft 910 via the magnetic tape. Subsequently, the first motor 800 stops rotating, and the second motor 1000 reverses and drives the second flywheel 920 to rotate, which in turn drives the second shaft 910 to rotate. At this point, the friction between the second shaft 910 and the magnetic tape can be used to pull the magnetic tape in reverse for playback.

[0038] Therefore, the aforementioned tape drive mechanism, through the cooperation of the first motor 800 and the second motor 1000, can play sound by rotating the tape forward or backward, eliminating the need for the user to remove the tape or insert it in reverse, making operation much simpler.

[0039] It should be noted that when the half gear 500 pushes the actuating assembly 400, and the actuating assembly 400 further actuates the magnetic head assembly 200 and the pressure roller assembly 300, the playback magnetic head 210 contacts the magnetic tape, the first pressure roller 310 abuts against the first roller shaft 610 via the magnetic tape, and the second pressure roller 320 abuts against the second roller shaft 910 via the magnetic tape, all in a synchronized manner. During forward playback, the second motor 1000 stops rotating, and the second roller shaft 910 remains stationary; during reverse playback, the first motor 800 stops rotating, and the first roller shaft 610 remains stationary.

[0040] In some embodiments, the tape drive mechanism further includes a first belt 1100. One end of the first belt 1100 is wound around the drive end of the first motor 800, and the other end of the first belt 1100 is wound around the first flywheel 620. In use, the drive end of the first motor 800 drives the first flywheel 620 to rotate via the first belt 1100.

[0041] Similarly, the aforementioned tape drive mechanism also includes a second belt 1200. One end of the second belt 1200 is wound around the drive end of the second motor 1000, and the other end of the second belt 1200 is wound around the second flywheel 920. In use, the drive end of the second motor 1000 drives the second flywheel 920 to rotate via the second belt 1200.

[0042] Please refer to the following: Figure 4 and Figure 5 In some embodiments, the first motor 800 and / or the second motor 1000 include a support 810, a main board 820, a stator 830, and a rotor 840.

[0043] The motherboard 820 is located on the support 810.

[0044] The stator 830 includes an iron core 831 and a coil 832. The iron core 831 is disposed on the support 810. The coil 832 is wound on the iron core 831 and electrically connected to the main board 820.

[0045] The rotor 840 includes a housing 841 and a magnetic element 842. The housing 841 is rotatably mounted on a support 810. The magnetic element 842 is mounted on the housing 841 and surrounds the iron core 831.

[0046] In operation, the mainboard 820 enables real-time switching of the current within the coil 832, generating a rotating magnetic field through this current switching. The magnetic component 842 rotates under the influence of this rotating magnetic field, which in turn drives the outer casing 841 to rotate, thereby outputting power.

[0047] For example, the magnetic component 842 is a permanent magnet or a magnet.

[0048] Specifically, the support 810 is fixedly mounted on the substrate 100, and an annular protrusion 811 is provided on the side of the support 810 away from the substrate 100.

[0049] Both the main board 820 and the iron core 831 are fixedly sleeved on the protrusion 811, with the main board 820 located between the iron core 831 and the support 810.

[0050] A bearing 850 is embedded in the inner circumference of the protrusion 811, and the outer ring of the bearing 850 is interference-fitted with the inner wall of the protrusion 811. Correspondingly, a shaft 860 is inserted through the outer shell 841. The shaft is inserted into the bearing 850 and is interference-fitted with the inner ring of the bearing 850. Thus, the outer shell 841 is rotatably connected to the support 810 through the shaft 860, the bearing 850, and the protrusion 811 in sequence.

[0051] In addition, a shim 870 is provided between the shaft core 860 and the base to reduce wear. A drive wheel 880 is fitted onto the end of the shaft core 860 away from the support 810. The drive wheel 880 is riveted to the shaft core 860 and serves as the drive end of the motor.

[0052] Taking the first motor 800 as an example, the end of the first belt 1100 that is away from the first flywheel 620 is wound around the drive wheel 880.

[0053] The motor described above, mainly composed of a support 810, a main board 820, a stator 830, and a rotor 840, is a brushless motor, also known as a brushless DC motor or an electronically controlled speed motor. Compared to traditional brushed DC motors, brushless motors do not require brushes and slip rings for commutation, thus offering higher efficiency, longer lifespan, and lower maintenance requirements, which is beneficial for improving the performance of tape drive mechanisms.

[0054] Furthermore, brushless motors are relatively thin. Using them as the first motor 800 and / or the second motor 1000 in a tape drive mechanism helps meet the ultra-thin design requirements of tape drive mechanisms.

[0055] Furthermore, in some embodiments, the support 810 is plate-shaped, and the thickness of the support 810 is D1, satisfying D1≤1mm.

[0056] For example, the support 810 is made of ultra-thin die-cast zinc alloy plate with a thickness of 1mm, which can reduce the thickness as much as possible while ensuring its own structural strength, thereby making the overall thickness of the motor smaller.

[0057] In some embodiments, the wall thickness of the outer casing 841 is H1, satisfying H1≤0.6mm.

[0058] In some embodiments, the thickness of the outer shell 841 along its own rotation axis is D2, satisfying D2≤4.5mm.

[0059] For example, the housing 841 is made of 0.6mm thick ultra-thin steel sheet by stamping. After stamping, the total thickness of the housing 841 is only 4.5mm. This can also reduce the thickness as much as possible while ensuring its own structural strength, thereby making the thickness of the entire motor smaller.

[0060] In some embodiments, the thickness of the first motor 800 and / or the second motor 1000 is D3, satisfying D3≤7mm.

[0061] For example, the overall thickness of the first motor 800 and the second motor 1000 is 7mm, which can meet the ultra-thin design requirements of the tape drive mechanism.

[0062] Furthermore, in some embodiments, the stator 830 is provided with a plurality of solder joints. Correspondingly, the support 810 is provided with clearance holes 812, which are provided corresponding to the solder joints.

[0063] By creating clearance holes 812 in the manufacturing process to avoid the solder joints on the stator 830, the thickness of the support 810 and the stator 830 after stacking along the rotation axis of the rotor 840 can be reduced, thereby making the overall thickness of the motor smaller.

[0064] In addition, by using the clearance hole 812 to avoid the solder joint, the risk of leakage can be greatly reduced, thereby extending the service life of the motor and thus helping to extend the service life of the entire tape drive mechanism.

[0065] In some embodiments, the stator 830 is covered with an insulating adhesive layer (not shown in the figure).

[0066] Understandably, when processing the stator 830, the conventional spray insulation process is replaced with an adhesive coating process to form an insulating adhesive layer. Encasing the stator 830 in this insulating adhesive layer improves its resistance to leakage current, thereby extending the motor's lifespan and, consequently, the overall lifespan of the tape drive mechanism.

[0067] Furthermore, in some embodiments, the insulating adhesive layer is a thermally conductive insulating adhesive layer.

[0068] The thermally conductive insulating adhesive layer covering the stator 830 can improve the thermal conductivity of the stator 830, greatly improve the heat dissipation effect, make the motor run more stably, and thus contribute to the stable operation of the entire tape drive mechanism.

[0069] For example, the thermally conductive insulating adhesive layer is composed of PPS (Polyphenylene sulfide) and AL2O3.

[0070] Please refer to the following: Figure 1 and Figure 6 In some embodiments, the transmission gear assembly 700 includes a second gear 710, a third gear 720, a bracket 730, and a fourth gear 740.

[0071] The second gear 710 and the third gear 720 are rotatably disposed on the substrate 100. The third gear 720 includes a first tooth portion 721 and a second tooth portion 722, and the first gear 630, the second gear 710 and the first tooth portion 721 mesh in sequence.

[0072] Furthermore, the bracket 730 is rotatably mounted on the base plate 100 about the rotation axis of the third gear 720. The fourth gear 740 is rotatably mounted on the bracket 730, and the second tooth 722, the fourth gear 740, and the half gear 500 mesh in sequence.

[0073] In use, the first gear 630 drives the second gear 710 to rotate, the second gear 710 drives the first tooth 721 to rotate, which in turn drives the entire third gear 720 to rotate. The second tooth 722 in the third gear 720 drives the fourth gear 740 to rotate, and the fourth gear 740 ultimately drives the half gear 500 to rotate.

[0074] It should be noted that the fourth gear 740 is damped when rotating relative to the bracket 730. When the fourth gear 740 is not in contact with any other structure besides the second tooth 722 and the bracket 730, the force applied to the fourth gear 740 when the second tooth 722 rotates will cause the fourth gear 740, together with the bracket 730, to oscillate around the rotation axis of the third gear 720, while the fourth gear 740 remains stationary relative to the bracket 730.

[0075] Meanwhile, the half gear 500 is located on the movement path of the fourth gear 740. When the fourth gear 740 swings around the rotation axis of the third gear 720 until it contacts the half gear 500, the fourth gear 740 meshes with the half gear 500 and is restricted by the half gear 500 from continuing to swing. At this time, the bracket 730 remains fixed relative to the base plate 100, and the second tooth 722, the fourth gear 740, and the half gear 500 are driven in sequence.

[0076] Specifically, since the half gear 500 has teeth only in a localized area along its circumference, after the fourth gear 740 drives the half gear 500 to rotate through a certain angle, the half gear 500 disengages from the fourth gear 740. At this time, the half gear 500 no longer restricts the fourth gear 740, and the fourth gear 740 and the support 730 can continue to swing around the rotation axis of the third gear 720.

[0077] Please refer to the following: Figure 1 and Figure 2 Furthermore, in some embodiments, a fifth gear 110 and a magnetic tape pulley 120 are provided on the substrate 100. The fifth gear 110 is rotatably disposed on the substrate 100, and the magnetic tape pulley 120 is connected to the fifth gear 110.

[0078] When the bracket 730 rotates around the rotation axis of the third gear 720, the fourth gear 740 meshes with the half gear 500 and the fifth gear 110 in sequence.

[0079] When the fourth gear 740 meshes with the fifth gear 110, the linear velocity of the magnetic tape pulley 120 is greater than the linear velocity of the first flywheel 620.

[0080] As previously described, when the fourth gear 740 is not in contact with any other structures besides the second tooth 722 and the support 730, the force applied to the fourth gear 740 when the second tooth 722 rotates will cause the fourth gear 740, together with the support 730, to oscillate around the rotation axis of the third gear 720. During the oscillation, the fourth gear 740 first engages with the half gear 500, and disengages from the half gear 500 after the half gear 500 has rotated through a certain angle, and then continues to oscillate until it engages with the fifth gear 110.

[0081] At this time, the fourth gear 740 drives the fifth gear 110 to rotate, which in turn drives the tape pulley 120 to rotate. Since the linear velocity of the tape pulley 120 is greater than the linear velocity of the first flywheel 620, the friction force applied by the tape pulley 120 to the tape can give the tape a pre-tension force, keeping the tape in a taut state and preventing it from winding.

[0082] Along the direction of the magnetic tape's travel, the magnetic tape reel 120 is located in front of the first flywheel 620.

[0083] Similarly, in some embodiments, the tape drive mechanism also includes a controller electrically connected to the first motor 800 and the second motor 1000, respectively.

[0084] The controller is used to monitor the first current of the first motor 800 and to control the first motor 800 to stop suddenly when the first current exceeds the preset current.

[0085] Understandably, during the forward playback of a magnetic tape, if tape winding occurs under certain unavoidable circumstances, the torque on the first motor 800 will increase sharply, and the current will also increase accordingly. The controller detects the change in the first current and controls the first motor 800 to stop abruptly when the first current exceeds the preset current, thus preventing continuous tape winding and minimizing the risk of tape damage.

[0086] Similarly, the controller is used to monitor the second current of the second motor 1000 and control the second motor 1000 to stop suddenly when the second current exceeds the preset current.

[0087] Understandably, during tape reversal playback, if tape winding occurs under certain unavoidable circumstances, the torque on the second motor 1000 will increase sharply, and the current will also increase accordingly. The controller detects the change in the second current and controls the second motor 1000 to stop abruptly when the second current exceeds the preset current, which can also prevent the tape winding from continuing and make the tape less susceptible to damage.

[0088] Please refer to the following: Figure 1 and Figure 7 In some embodiments, the toggle assembly 400 includes a first toggle member 410 and a second toggle member 420.

[0089] The first actuating member 410 and the second actuating member 420 are both rotatably disposed on the substrate 100. The first actuating member 410 includes a first end 411 and a second end 412, with the second end 412 abutting against the magnetic head assembly 200 in the direction toward the magnetic tape. The second actuating member 420 includes a third end 421 and a fourth end 422, with the fourth end 422 abutting against the pressure roller assembly 300 in the direction toward the first flywheel 620.

[0090] When the half gear 500 rotates, it pushes against the first end 411, and then pushes against the third end 421 through the first end 411.

[0091] In use, the half gear 500 rotates under the drive of the fourth gear 740, which in turn pushes the first end 411, causing the first actuating member 410 to rotate. The second end 412 of the first actuating member 410 abuts against the magnetic head assembly 200 in the direction toward the magnetic tape, so that the playback magnetic head 210 contacts the magnetic tape.

[0092] At the same time, the half gear 500 pushes the third end 421 through the first end 411, causing the second actuating member 420 to rotate. The fourth end 422 of the second actuating member 420 abuts against the pressure roller assembly 300 in the direction toward the first flywheel 620, causing the first pressure roller 310 to abut against the first wheel shaft 610 through the magnetic tape.

[0093] For example, the first actuating element 410 adopts a magnetic head sheet metal bracket, and the second actuating element 420 adopts a pressure roller push rod.

[0094] Furthermore, in some embodiments, the first end 411 and the third end 421 are interference-fitted.

[0095] When the actuating component 400 actuates the magnetic head assembly 200 and the pressure roller assembly 300, causing the playback magnetic head 210 to contact the magnetic tape, the first pressure roller 310 to abut against the first roller shaft 610 via the magnetic tape, and the second pressure roller 320 to abut against the second roller shaft 910 via the magnetic tape, the first end 411 and the third end 421 form an interference fit, thereby locking each other and keeping the magnetic head assembly 200 and the pressure roller assembly 300 in this state.

[0096] For example, a groove is provided on the side of the first end 411 away from the half gear 500, and the groove wall forms a pushing surface 413 and a locking surface 414.

[0097] The pushing surface 413 contacts the side of the third end 421. When the half gear 500 rotates, it pushes the first end 411 and pushes the third end 421 through the pushing surface 413 on the first end 411.

[0098] After the first actuating member 410 and the second actuating member 420 have rotated through a certain angle, the end face of the third end 421 abuts against the locking surface 414, and the third end 421 and the first end 411 form an interference fit and lock each other.

[0099] Please refer to it again. Figure 2 In some embodiments, the head assembly 200 further includes a recording head 220. Accordingly, the actuating component 400 is also used to actuate the head assembly 200 to bring the recording head 220 into contact with the magnetic tape.

[0100] When the aforementioned tape drive mechanism is operating, the first motor 800 rotates forward, driving the first flywheel 620 to rotate. The first flywheel 620 drives the first shaft 610 and the first gear 630 to rotate. The first gear 630 drives the half gear 500 to rotate via the transmission gear assembly 700, causing the half gear 500 to push the actuating assembly 400. The actuating assembly 400 further actuates the magnetic head assembly 200 and the pressure roller assembly 300, causing the recording head 220 to contact the magnetic tape, while the first pressure roller 310 abuts against the first shaft 610 via the magnetic tape. At this time, the friction between the first shaft 610 and the magnetic tape is used to pull the magnetic tape for recording.

[0101] It should be noted that both the playback head 210 and the recording head 220 are electrically connected to the aforementioned controller. When the toggle assembly 400 togglees the head assembly 200, the playback head 210 and the recording head 220 simultaneously contact the magnetic tape. The controller controls one of the playback head 210 and the recording head 220 to perform either playback or recording operations.

[0102] Furthermore, in some embodiments, the magnetic head assembly 200 further includes a magnetic head mounting base 230. The magnetic head mounting base 230 is slidably disposed on the substrate 100, and both the playback magnetic head 210 and the recording magnetic head 220 are disposed on the magnetic head mounting base 230.

[0103] The actuating assembly 400 is used to actuate the head mount 230 so that the head mount 230 slides toward the magnetic tape.

[0104] Specifically, when the first actuating member 410 rotates under the pushing action of the half gear 500, the second end 412 of the first actuating member 410 abuts against the magnetic head mounting base 230 in the direction toward the magnetic tape, thereby actuating the magnetic head mounting base 230 and causing it to slide toward the magnetic tape. At this time, the playback head 210 and the recording head 220 slide with the magnetic head mounting base 230 and then come into contact with the magnetic tape.

[0105] In some embodiments, the pressure roller assembly 300 further includes a first pressure roller bracket 330 and a second pressure roller bracket 340.

[0106] The first pressure roller bracket 330 and the second pressure roller bracket 340 are both rotatably mounted on the base plate 100, and the first pressure roller 310 is rotatably mounted on the first pressure roller bracket 330, while the second pressure roller 320 is rotatably mounted on the second pressure roller bracket 340.

[0107] The actuating assembly 400 is used to actuate the first pressure roller bracket 330 so that the first pressure roller bracket 330 swings toward the first wheel shaft 610. The actuating assembly 400 is also used to actuate the second pressure roller bracket 340 so that the second pressure roller bracket 340 swings toward the second wheel shaft 910.

[0108] Specifically, when the second actuating member 420 rotates under the pushing action of the half gear 500, the fourth end 422 of the second actuating member 420 abuts against the first pressure roller bracket 330 in the direction toward the first wheel shaft 610, thereby actuating the first pressure roller bracket 330 and causing the first pressure roller bracket 330 to swing toward the first wheel shaft 610 until the first pressure roller 310 abuts against the first wheel shaft 610 through the magnetic tape.

[0109] Furthermore, when the first actuating member 410 rotates under the pushing action of the half gear 500, the second end 412 of the first actuating member 410 actuates the magnetic head mounting seat 230, causing the magnetic head mounting seat 230 to slide toward the magnetic tape, and then actuates the second pressure roller bracket 340 through the magnetic head mounting seat 230, causing the second pressure roller bracket 340 to swing toward the second roller shaft 910 until the second pressure roller 320 abuts against the second roller shaft 910 through the magnetic tape.

[0110] It should be noted that in this embodiment, the first flywheel assembly 600 and the second flywheel assembly 900 are located at opposite ends of the substrate 100 along its length, and the first pressure roller 310 and the second pressure roller 320 are far apart. The second actuating member 420 is adjacent to the first pressure roller bracket 330 and cannot move the second pressure roller bracket 340. Therefore, the first actuating member 410 moves the second pressure roller bracket 340 through the magnetic head mounting seat 230.

[0111] Furthermore, elastic reset structures such as springs or torsion springs are provided between the head mount 230 and the substrate 100, between the first pressure roller bracket 330 and the substrate 100, and between the second pressure roller 320 and the substrate 100. When the fourth gear 740 rotates in the reverse direction, it drives the half gear 500 to rotate in the reverse direction. The half gear 500 abuts against the actuating component 400 from the other side, causing the actuating component 400 to reset, thereby releasing the restriction on the head mount 230, the first pressure roller bracket 330, and the second pressure roller bracket 340. At this time, the head mount 230, the first pressure roller bracket 330, and the second pressure roller bracket 340 can reset themselves.

[0112] The aforementioned tape drive mechanism can perform forward playback, reverse playback, and recording operations, respectively.

[0113] by Figure 1Taking the shown perspective as an example, during forward rotation, the first motor 800 rotates clockwise and drives the first flywheel 620 to rotate clockwise via the first belt 1100. The first flywheel 620 drives the first axle 610 and the first gear 630 to rotate. The first gear 630 drives the second gear 710 to rotate counterclockwise, and the second gear 710 drives the first tooth 721 to rotate clockwise, which in turn drives the entire third gear 720 to rotate clockwise. The second tooth 722 in the third gear 720 first drives the fourth gear 740, together with the bracket 730, to swing clockwise around the rotation axis of the third gear 720. After the fourth gear 740 swings to contact and mesh with the half gear 500, the second tooth 722 then drives the fourth gear 740 to rotate counterclockwise. The fourth gear 740 drives the half gear 500 to rotate clockwise, causing the half gear 500 to push upward against the first end 411 of the first actuating member 410, thereby causing the first actuating member 410 to rotate counterclockwise. At this time, the second end 412 of the first actuating member 410 presses down and moves the magnetic head mounting base 230, causing the playback magnetic head 210 to press down and contact the magnetic tape. The half gear 500 also pushes the third end 421 of the second actuating member 420 upward through the first end 411, thereby causing the second actuating member 420 to rotate clockwise. At this time, the fourth end 422 of the second actuating member 420 presses down and moves the first pressure pulley bracket 330, causing the first pressure pulley 310 to press down, so that the first pressure pulley 310 abuts against the first shaft 610 through the magnetic tape. At this time, the friction between the first shaft 610 and the magnetic tape can be used to pull the magnetic tape to rotate forward for playback.

[0114] When playing in reverse, the first motor 800 rotates clockwise and drives the first flywheel 620 to rotate clockwise via the first belt 1100. The first flywheel 620 drives the first axle 610 and the first gear 630 to rotate. The first gear 630 drives the second gear 710 to rotate counterclockwise, and the second gear 710 drives the first tooth 721 to rotate clockwise, which in turn drives the entire third gear 720 to rotate clockwise. The second tooth 722 in the third gear 720 first drives the fourth gear 740, together with the bracket 730, to swing clockwise around the rotation axis of the third gear 720. After the fourth gear 740 swings to contact and mesh with the half gear 500, the second tooth 722 then drives the fourth gear 740 to rotate counterclockwise. The fourth gear 740 drives the half gear 500 to rotate clockwise, causing the half gear 500 to push upward against the first end 411 of the first actuating member 410, thereby causing the first actuating member 410 to rotate counterclockwise. At this time, the second end 412 of the first actuating element 410 presses down and actuates the magnetic head mounting base 230, causing the playback magnetic head 210 to press down and contact the magnetic tape. The magnetic head mounting base 230 further actuates the second pressure roller bracket 340, causing the second pressure roller 320 to press down, so that the second pressure roller 320 abuts against the second shaft 910 through the magnetic tape. Subsequently, the first motor 800 stops rotating, and the second motor 1000 reverses and drives the second flywheel 920 to rotate counterclockwise through the second belt 1200. The second flywheel 920 drives the second shaft 910 to rotate. At this time, the friction between the second shaft 910 and the magnetic tape can be used to pull the magnetic tape in reverse for playback.

[0115] During recording, the first motor 800 rotates clockwise and drives the first flywheel 620 to rotate clockwise via the first belt 1100. The first flywheel 620 drives the first axle 610 and the first gear 630 to rotate. The first gear 630 drives the second gear 710 to rotate counterclockwise, and the second gear 710 drives the first tooth 721 to rotate clockwise, which in turn drives the entire third gear 720 to rotate clockwise. The second tooth 722 in the third gear 720 first drives the fourth gear 740, together with the bracket 730, to swing clockwise around the rotation axis of the third gear 720. After the fourth gear 740 swings to contact and mesh with the half gear 500, the second tooth 722 then drives the fourth gear 740 to rotate counterclockwise. The fourth gear 740 drives the half gear 500 to rotate clockwise, causing the half gear 500 to push upward against the first end 411 of the first actuating member 410, thereby causing the first actuating member 410 to rotate counterclockwise. At this time, the second end 412 of the first actuating member 410 presses down and actuates the magnetic head mounting base 230, causing the recording magnetic head 220 to press down and contact the magnetic tape. The half gear 500 also pushes the third end 421 of the second actuating member 420 upward through its first end 411, thereby causing the second actuating member 420 to rotate clockwise. At this time, the fourth end 422 of the second actuating member 420 presses down and actuates the first pressure roller bracket 330, causing the first pressure roller 310 to press down, so that the first pressure roller 310 abuts against the first roller shaft 610 through the magnetic tape. At this time, the magnetic tape can be pulled to record using the friction between the first roller shaft 610 and the magnetic tape.

[0116] In summary, the aforementioned tape drive mechanism, through the cooperation of the first motor 800 and the second motor 1000, can play sound by rotating the tape forward or backward, eliminating the need for the user to remove the tape or insert it in reverse, making operation much simpler.

[0117] Secondly, a brushless motor is used as the first motor 800 and the second motor 1000, and the thickness of the motor is further reduced to meet the ultra-thin design requirements of the tape drive mechanism, that is, to achieve forward and reverse playback of the tape within an ultra-thin size space.

[0118] Furthermore, by using the tape pulley 120 to pull the tape in front of the first flywheel 620, the linear speed of the tape pulley 120 is greater than that of the first flywheel 620, ensuring that the tape is always taut and preventing tape winding. Simultaneously, the controller monitors the current of the first motor 800 and the second motor 1000, and in the event of unavoidable tape winding, controls either the first motor 800 or the second motor 1000 to stop suddenly, preventing continuous winding and minimizing tape damage.

[0119] This embodiment also provides a magnetic tape recorder / player, including the aforementioned magnetic tape drive mechanism.

[0120] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0121] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0122] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A magnetic tape drive mechanism, characterized in that, include: substrate; A magnetic head assembly, movably disposed on the substrate, the magnetic head assembly including a sound-emitting magnetic head; A pressure roller assembly, wherein the pressure roller assembly is movably disposed on the substrate, and the pressure roller assembly includes a first pressure roller and a second pressure roller; A toggle assembly is disposed on the substrate and abuts against the magnetic head assembly and the pressure roller assembly, respectively; A half-gear, which is rotatably mounted on the base plate and pushes against the actuating assembly when rotated; A first flywheel assembly, comprising a first axle, a first flywheel, and a first gear interconnected with each other, wherein the first axle is rotatably mounted on the base plate; A transmission gear assembly, wherein the first gear meshes with the half gear via the transmission gear assembly; A first motor, the drive end of which is connected to the first flywheel; The second flywheel assembly includes a second axle and a second flywheel connected to each other, with the second axle rotatably mounted on the base plate. as well as The second motor, the drive end of the second motor is connected to the second flywheel; The actuating component is used to actuate the magnetic head assembly and the pressure roller assembly, so that the playback magnetic head contacts the magnetic tape, the first pressure roller abuts against the first roller shaft through the magnetic tape, and the second pressure roller abuts against the second roller shaft through the magnetic tape.

2. The magnetic tape drive mechanism according to claim 1, characterized in that, The transmission gear assembly includes a second gear, a third gear, a bracket, and a fourth gear; The second gear and the third gear are rotatably disposed on the substrate, the third gear including a first tooth and a second tooth, the first gear, the second gear and the first tooth meshing in sequence; The bracket is rotatably mounted on the base plate about the rotation axis of the third gear, and the fourth gear is rotatably mounted on the bracket. The second tooth, the fourth gear, and the half gear mesh in sequence.

3. The magnetic tape drive mechanism according to claim 2, characterized in that, The substrate is provided with a fifth gear and a magnetic tape wheel. The fifth gear is rotatably mounted on the substrate, and the magnetic tape wheel is connected to the fifth gear. When the bracket rotates about the rotation axis of the third gear, the fourth gear meshes with the half gear and the fifth gear in sequence; When the fourth gear meshes with the fifth gear, the linear velocity of the magnetic tape reel is greater than the linear velocity of the first flywheel.

4. The magnetic tape drive mechanism according to claim 1, characterized in that, The tape drive mechanism also includes a controller, which is electrically connected to the first motor and the second motor respectively; The controller is used to monitor the first current of the first motor and control the first motor to stop urgently when the first current exceeds a preset current. And / or, The controller is used to monitor the second current of the second motor and control the second motor to stop suddenly when the second current exceeds a preset current.

5. The magnetic tape drive mechanism according to claim 1, characterized in that, The first motor and / or the second motor includes: Support; A motherboard, which is disposed on the support; Stator, the stator comprising an iron core and a coil, the iron core being disposed on the support, the coil being wound around the iron core and electrically connected to the main board; and The rotor includes a housing and a magnetic component. The housing is rotatably mounted on the support, and the magnetic component is disposed on the housing and surrounds the iron core.

6. The magnetic tape drive mechanism according to claim 5, characterized in that, The stator is provided with a number of solder joints, and the support is provided with clearance holes, which are provided in correspondence with the solder joints.

7. The magnetic tape drive mechanism according to claim 5, characterized in that, The stator is covered with an insulating adhesive layer.

8. The magnetic tape drive mechanism according to claim 7, characterized in that, The insulating adhesive layer is a thermally conductive insulating adhesive layer.

9. The magnetic tape drive mechanism according to any one of claims 5-8, characterized in that, The support is plate-shaped, and the thickness of the support is D1, where D1 ≤ 1 mm; and / or, The wall thickness of the outer shell is H1, where H1 ≤ 0.6 mm; and / or, The thickness of the outer shell along its own axis of rotation is D2, where D2 ≤ 4.5 mm; and / or, The thickness of the first motor and / or the second motor is D3, where D3≤7mm.

10. The magnetic tape drive mechanism according to claim 1, characterized in that, The head assembly also includes a recording head, and the actuating component is further used to actuate the head assembly to bring the recording head into contact with the magnetic tape.

11. The magnetic tape drive mechanism according to claim 10, characterized in that, The magnetic head assembly further includes a magnetic head mounting base, which is slidably disposed on the substrate, and both the playback magnetic head and the recording magnetic head are disposed on the magnetic head mounting base; The actuating component is used to actuate the head mount so that the head mount slides toward the magnetic tape.

12. The magnetic tape drive mechanism according to claim 1, characterized in that, The pressure roller assembly further includes a first pressure roller bracket and a second pressure roller bracket; The first pressure roller bracket is rotatably mounted on the substrate, and the first pressure roller is rotatably mounted on the first pressure roller bracket; The second pressure roller bracket is rotatably mounted on the base plate, and the second pressure roller is rotatably mounted on the second pressure roller bracket; The actuating component is used to actuate the first pressure roller bracket to make the first pressure roller bracket swing toward the first wheel axle. The actuating component is also used to actuate the second pressure roller bracket to make the second pressure roller bracket swing toward the second wheel axle.

13. The magnetic tape drive mechanism according to claim 1, characterized in that, The actuating assembly includes a first actuating element and a second actuating element; The first actuating member is rotatably disposed on the substrate. The first actuating member includes a first end and a second end, and the second end abuts against the magnetic head assembly in the direction toward the magnetic tape. The second actuating member is rotatably disposed on the substrate. The second actuating member includes a third end and a fourth end, and the fourth end abuts against the pressure roller assembly in the direction toward the first flywheel. When the half gear rotates, it pushes against the first end, and through the first end, it pushes against the third end.

14. The magnetic tape drive mechanism according to claim 13, characterized in that, The first end and the third end are interference-fitted.

15. A magnetic tape recorder / player, characterized in that, Includes the magnetic tape drive mechanism according to any one of claims 1-14.

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