CN209056280U - The automatic phonograph for returning arm function - Google Patents

Abstract

The utility model provides a kind of automatic phonograph for returning arm function, including circuit board, tone arm mechanism, disc record and the motor being arranged on fixed frame, it is additionally provided on fixed frame and returns arm mechanism and the first switch at normally open automatically, first switch and motor are electrically connected with the circuit on circuit board respectively, after first switch closure, motor driven disc record rotates, the record contacts on the pickup and disc record of tone arm mechanism；When pickup is moved to the reset key mechanism of automatic go back to arm mechanism of most inner side or driving of disc, first switch restores normally open, and the automatic tone arm for going back to arm mechanism driving tone arm mechanism lifts and returns to initial position.The utility model is using time arm mechanism automatically, after disc has been sung or when resetting, the automatic tone arm for going back to arm mechanism driving tone arm mechanism lifts and returns to initial position, it does not need using manually removing tone arm, the time of contact that pickup and disc will not be extended, have many advantages, such as it is easy to use, extend service life and improve the performance of phonograph.

Description

The automatic phonograph for returning arm function

Technical field

The utility model relates to phonograph technical fields, more particularly, to a kind of automatic phonograph for returning arm function.

Background technique

Phonograph is a kind of more mature and classic sound play device.Its principle that broadcasts are as follows: have in the plane of disc With acoustic method, the arc cutting corresponding with sound that carves.Then disc is placed on the turntable of phonograph and is rotated, sung Needle is contacted with the surface of disc, thus after reading corresponding voice signal and amplifying to signal, reduction, which plays, publishes a disc Voice signal.The function that the tone arm of existing many phonographs does not automatically retract, disc need to lean on people by stylus after having sung It is removed from disc, this makes stylus for a long time and record contacts, easily causes abrasion and the disc of stylus once for a long time Damage, shorten service life, and inconvenient to use.

Utility model content

In order to overcome the above problem, the utility model provides time arm automatically that is a kind of easy to use and extending service life The phonograph of function.

The technical solution of the utility model is: providing a kind of automatic phonograph for returning arm function, including is arranged in fixed frame On circuit board, tone arm mechanism, disc record and motor, be additionally provided on the fixed frame and return arm mechanism and at normally open automatically First switch, the first switch and the motor be electrically connected with the circuit on the circuit board respectively, and described first opens It closes after closing, the rotation of disc record described in the motor driven, the pickup and the record contacts on the disc record of the tone arm mechanism；When When the pickup is moved to the most inner side of disc or drives the automatic reset key mechanism for returning arm mechanism, the first switch is extensive Multiple normally open, the arm mechanism that returns automatically drive the tone arm of the tone arm mechanism to lift and return to initial position.

As the improvement to the utility model, it is described automatically return arm mechanism include the reset key mechanism, the arm of force, turntable, Motion control mechanism returns arm moving member and the mobile control piece of tone arm, and the reset push rod of the reset key mechanism is described for driving The rotation of the arm of force, the medium position of the arm of force and the turntable are rotatablely connected with the fixed frame respectively, the motion control Mechanism is arranged on the turntable；One end of the arm of force drives the motion control mechanism movement, in the motion control machine Under the action of structure, the rotation axis of the disc record drives the turntable rotation, and the turntable driving arm moving member that returns is mobile, institute It states go back to the one end of arm moving member far from the disc record to lift the tone arm, the turntable is driven by the mobile control piece of the tone arm It moves the tone arm and returns to initial position.

It further include starting press button mechanism as the improvement to the utility model, the beginnings press button mechanism drives described the One closes the switch.

As the improvement to the utility model, the beginning press button mechanism includes starting key, starting push rod, the first beginning Rotating member, switch actuator, second start turning part, the first elastic component and the first torsional spring, and described first starts turning part, described Switch actuator and described second starts turning part respectively with fixed frame rotation connection, and the both ends for starting push rod are distinguished With it is described beginning key and described first start turning part one end connect, the both ends of first elastic component respectively with it is described solid Determine one end that frame starts turning part with described first to connect, the both ends of first torsional spring are separately positioned on the fixed frame and institute It states on switch actuator, described second starts turning the position rotation on one end of part and the other end of the switch actuator Connection, described second starts turning the other end of part and turntable cooperation；When one end of the switch actuator is fastened on When at the beginning on the other end of rotating member, the first switch is at normally open；When the beginning key starts to push away by described Bar driving described first starts turning part rotation, the other end that one end of the switch actuator starts turning part from described first On release, the other end of the switch actuator, which is resisted against in the first switch, is closed first switch；The turntable Part is started turning by described second and drives the switch actuator rotation, and one end of the switch actuator is made to be fastened on first It starts turning on the other end of part.

As the improvement to the utility model, the motion control mechanism includes the first motion control and the second movement control Product, first motion control and the second motion control setting stacked on top of one another, and first motion control One end of part and one end of second motion control are rotatablely connected with the fixed frame respectively, are provided on the turntable Notch, the motion control portion of first motion control and a part of the rotate gear in the rotation axis are located at described lack In mouthful, one end of the arm of force drives the motion control portion to be resisted against the rotate gear by second motion control On, so that side tooth engagement on the side wall of the rotate gear and the turntable and the turntable is driven to rotate；Described turn Disk rotates after a week, and the rotate gear drives the first motion control movement by second motion control, makes The motion control portion described in the notch of obtaining is far from the rotate gear.

As the improvement to the utility model, inner ring track groove, middle ring track are provided on the lower surface of the turntable Slot, outer ring track and crescent drive piece, and the lower end of a shifting axle is connect with crescent driving piece, and the upper end of the shifting axle is worn The turntable is crossed, load-carrying baffle is provided on the upper end of the shifting axle, one second elastic component is set in the load-carrying baffle On the shifting axle between the turntable, the inner ring track groove and the middle ring track groove part superposition, described interior It is provided with inner ring deep trouth in ring track groove, middle ring deep trouth, the part of the middle ring deep trouth are provided in the middle ring track groove Slot is overlapped with the inner ring deep trouth.

It further include rotation seat as the improvement to the utility model, the rotation seat and the fixed frame are rotatablely connected, institute The medium position for stating the mobile control piece of tone arm is rotated upwardly and downwardly with the rotation seat to be connect, on one end of the mobile control piece of the tone arm Control-rod be located in the inner ring track groove or the outer ring track, the other end of the mobile control piece of the tone arm is sung with described The rotation controling piece of arm mechanism is rotatablely connected.

As the improvement to the utility model, the first slot and are respectively arranged on the both ends of described time arm moving member Two slots, the rotation axis are located in first slot, set respectively in the upper and lower surfaces of described time arm moving member Be equipped with protrusion and lower convexity, it is described it is upper protrusion be located at the outer ring track in, the both ends of third elastic component respectively with it is described solid Determine frame to connect with described time arm moving member, is provided with carry arm structure on the described time one end of arm moving member far from the turntable.

As the improvement to the utility model, further include with the circuit be electrically connected second switch and with the fixation The power supply rotating member of frame rotation connection, the second switch is at normal closure state, and the second switch is for controlling connecing for power supply Logical, the second switch is arranged on the power supply rotating member, and the slide bar of the power supply rotating member is arranged in second slot In, described time arm moving member drives the power supply rotating member rotation, in the course of rotation, the tone arm machine by the slide bar Structure opens the second switch.

It further include carry arm mechanism as the improvement to the utility model, the carry arm mechanism is arranged on the fixed frame, The pause button mechanism or the structure of lifting drive the carry arm mechanism to lift the tone arm.

As the improvement to the utility model, the tone arm mechanism includes that tone arm seat, the tone arm and setting are sung described The pickup on arm, the tone arm are arranged on the tone arm seat, and the tone arm seat is arranged on the fixed frame, described Rotation controling piece is provided on tone arm seat.

The utility model returns arm mechanism and first switch due to using automatically, after disc has been sung or when resetting, the One switch restores normally open, and the automatic tone arm for going back to arm mechanism driving tone arm mechanism lifts and returns to initial position, do not need to make Manually tone arm is removed, the time of contact of pickup and disc will not be extended, have it is easy to use, extend service life and mention The advantages that high performance of phonograph.

Detailed description of the invention

Fig. 1 is a kind of schematic perspective view at visual angle of the utility model.

Fig. 2 is the schematic perspective view at another visual angle of Fig. 1.

Fig. 3 is the schematic perspective view for going back to a kind of visual angle of arm mechanism in Fig. 1 automatically.

Fig. 4 is the schematic perspective view at another visual angle of Fig. 3.

Fig. 5 is the decomposition texture schematic diagram of Fig. 4.

Wherein: 1, fixed frame；11, motor；12, rotation axis；13, rotate gear；2, tone arm mechanism；21, tone arm；22, it sings Head；23, rotation controling piece；24, tone arm seat；31, reset key mechanism；311, reset key；312, push rod is resetted；32, the arm of force；321, Keep out notch；322, pushing structure；33, turntable；331, side tooth；332, notch；333, inner ring track groove；3331, inner ring deep trouth； 334, middle ring track groove；3341, middle ring deep trouth；335, crescent drives piece；3351, load-carrying baffle；336, outer ring track； 3361, the first outer ring track；3362, the second outer ring track；3363, third outer ring track；337, sports limiting protrusion；34, it transports Dynamic control mechanism；341, the first motion control；3411, motion control portion；3412, spacing breach；342, the second motion control Part；3421, lower movement lug boss；3422, upper movement lug boss；35, arm moving member is returned；351, the first slot；352, the second slot Hole；353, lower convexity；354, carry arm structure；36, the mobile control piece of tone arm；361, control-rod；4, start press button mechanism；41, it opens Beginning key；42, start push rod；43, first part is started turning；44, switch actuator；45, second part is started turning；46, first Elastic component；451, side impeller；51, second switch；52, power supply rotating member；53, slide bar；6, carry arm mechanism；61, carry arm part； 62, the 4th elastic component；63, carry arm axis；64, carry arm locating part；71, pause button；72, suspend push rod；73, suspend rotating member； 8, key is adjusted the speed；100, first switch；101, third elastic component；200, circuit board.

Specific embodiment

In the description of the present invention, it should be understood that "center" in term, "upper", "lower", "front", "rear", The orientation or positional relationship of the instructions such as "left", "right" is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of retouching State the utility model and simplify description, rather than the device or component of indication or suggestion meaning must have a particular orientation, with Specific orientation construction and operation, therefore should not be understood as limiting the present invention.In addition, term " first ", " second " It is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connection ", " connected " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to dismantling connection, or integrally connect It connects；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, be also possible to indirectly connected through an intermediary, It can be the connection of two component internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Concrete meaning of the language in the utility model.

Revealed to Fig. 5, Fig. 1 and Fig. 2 referring to Figure 1 is a kind of automatic phonograph for returning arm function, Fig. 3 and Fig. 4 institute What is disclosed is the automatic structure for returning arm mechanism, and Fig. 5 is the automatic decomposition texture schematic diagram for returning arm mechanism.The phonograph includes setting The circuit board 200 on fixed frame 1, tone arm mechanism 2, disc record (not drawing) and motor 11 are set, is also set up on the fixed frame 1 Have and return arm mechanism and the first switch 100 at normally open automatically, the first switch 100 and the motor 11 respectively with it is described Circuit on circuit board 200 is electrically connected, and after the first switch 100 is closed, the motor 11 drives the disc record to rotate, institute The pickup 22 and the record contacts on the disc record for stating tone arm mechanism 2；When the pickup 22 is moved to the most inner side or drive of disc When moving the automatic reset key mechanism 31 for returning arm mechanism, the first switch 100 restores normally open, described to return arm machine automatically Structure drives the tone arm 21 of the tone arm mechanism 2 to lift and return to initial position.

In the present embodiment, the circuit being arranged on the circuit board 200 is the prior art, can be bought on the market, The utility model does not improve its circuit structure, the major function of the circuit be the work for controlling the motor 11, Audio Signal Processing and sound play, and the circuit also has revolving speed control function.

In the present embodiment, the motor 11 drives the disc record to rotate by belt, and the disc record is mounted on rotation axis 12 On, the rotation axis 12 is rotatablely connected with the fixed frame 1, and the rotation axis 12 is rotated together with the disc record, described Rotate gear 13 is provided in rotation axis 12.

In the present embodiment, the arm mechanism that returns automatically includes the reset key mechanism 31, the arm of force 32, turntable 33, movement control Mechanism 34, time arm moving member 35 and the mobile control piece 36 of tone arm processed, the reset push rod 312 of the reset key mechanism 31 is for driving The rotation of the arm of force 32, the medium position and the turntable 33 of the arm of force 32 are rotatablely connected with the fixed frame 1 respectively, institute Motion control mechanism 34 is stated to be arranged on the turntable 33；One end of the arm of force 32 drives the motion control mechanism 34 to transport Dynamic, under the action of motion control mechanism 34, the rotation axis 12 of the disc record drives the turntable 33 to rotate, the turntable The 33 drivings arm moving member 35 that returns is mobile, and described time the tone arm 21 is lifted in the one end of arm moving member 35 far from the disc record It rises, the turntable 33 drives the tone arm 21 to return to initial position by the mobile control piece 36 of the tone arm.

The lower surface of the arm of force 32 and the fixed frame 1 is rotatablely connected, and the other end of the arm of force 32, which is provided with, keeps out Notch 321 is provided with pushing structure 322 on the side wall of the other end of the arm of force 32.One end bending of the arm of force 32 is worn Cross the fixed frame 1, the both ends of the arm of force 32 are upper at angle in projection, the range of angle more than or equal to 110 degree to being less than Between 140 degree.

The reset key mechanism 31 includes reset key 311 and resets push rod 312, and the reset key 311 and the reset push away One end of bar 312 connects, and the relatively described pushing structure 322 of the other end for resetting push rod 312 is arranged.

The turntable 33 is arranged on the upper surface of the fixed frame 1, is provided with side tooth on the side wall of the turntable 33 331, it is arranged jagged 332 on the turntable 33.Be provided on the lower surface of the turntable 33 inner ring track groove 333, in Ring track groove 334, outer ring track 336 and crescent drive piece 335, and the lower end of a shifting axle (not identifying) and crescent drive piece The upper end of 335 connections, the shifting axle passes through the turntable 33, and load-carrying baffle is provided on the upper end of the shifting axle 3351, one second elastic component (not identifying) is set in the shifting axle between the load-carrying baffle 3351 and the turntable 33 On, the following table face contact of the load-carrying baffle 3351 and the disc record, the crescent driving piece 335 is arranged in the inner ring rail On position between mark slot 333 and the middle ring track groove 334.

On the turntable 33, the inner ring track groove 333 and 334 part superposition of middle ring track groove, described interior It is provided with inner ring deep trouth 3331 in ring track groove 333, middle ring deep trouth 3341 is provided in the middle ring track groove 334, it is described The local groove of middle ring deep trouth 3341 is overlapped with the inner ring deep trouth 3331.The depth of the inner ring deep trouth 3331 and the middle ring are deep The deep equality of slot 3341, the depth of the inner ring deep trouth 3331 are greater than the depth of the inner ring track groove 333 in other positions Degree, the depth of the middle ring deep trouth 3341 are greater than the depth of the middle ring track groove 334 in other positions.

On the turntable 33, the outer ring track 336 includes the first outer ring track 3361,3362 and of the second outer ring track Third outer ring track 3363, first outer ring track 3361, second outer ring track 3362 and third outer ring track 3363 successively circlewise connect, first outer ring track 3361, second outer ring track 3362 and the third outer ring rail The moving radius of mark 3363 is sequentially reduced.

The motion control mechanism 34 includes the first motion control 341 and the second motion control 342, first fortune Dynamic control piece 341 and the setting stacked on top of one another of second motion control 342, and the one of first motion control 341 End and one end of second motion control 342 are rotatablely connected with the fixed frame 1 respectively.First motion control A part of the rotate gear 13 in 341 motion control portion 3411 and the rotation axis 12 is located in the notch 332, One end of the arm of force 32 drives the motion control portion 3411 to be resisted against the rotation by second motion control 342 On gear 13, so that the rotate gear 13 engages with the side tooth 331 on the side wall of the turntable 33 and drives described turn Disk 33 rotates；After a week, the rotate gear 13 is driven described by second motion control 342 for the rotation of turntable 33 First motion control 341 movement, so that the motion control portion 3411 described in the notch 332 is far from the rotate gear 13。

In the motion control mechanism 34, set respectively on the lower surface and upper surface of second motion control 342 It is equipped with lower movement lug boss 3421 and upper movement lug boss 3422, limit is provided on first motion control 341 and is lacked Mouth 3412.The lower movement lug boss 3421 is arranged in the notch 332, and the upper movement lug boss 3422 is arranged described In spacing breach 3412, sports limiting protrusion 337 is provided on the turntable 33,337 setting of sports limiting protrusion exists In the spacing breach 3412.

The first slot 351 and the second slot 352, the rotation are respectively arranged on the both ends of described time arm moving member 35 Axis 12 is located in first slot 351, is respectively arranged in the upper and lower surfaces of described time arm moving member 35 convex Rise and lower convexity 353, it is described it is upper protrusion be located at the outer ring track 336 in, the both ends of third elastic component 101 respectively with it is described solid Determine frame 1 and described time arm moving member 35 connects, is provided with lift on the one end of described time arm moving member 35 far from the turntable 33 Arm configuration 354, the carry arm structure 354 into a bent shape, described time arm moving member 35 on the upper surface of the fixed frame 1 back and forth It is mobile.

It further include starting press button mechanism 4, the beginning press button mechanism 4 drives the first switch 100 to close in the present embodiment It closes.

The beginning press button mechanism 4 starts turning part 43, switch driving including beginning key 41, beginning push rod 42, first Part 44, second start turning part 45, the first elastic component 46 and the first torsional spring (not identifying), and described first starts turning part 43, institute State switch actuator 44 and described second start turning part 45 respectively with the fixed frame 1 be rotatablely connected, the beginning push rod 42 Both ends respectively with it is described beginning key 41 and described first start turning part 43 one end connect, first elastic component 46 One end that both ends start turning part 43 with the fixed frame 1 and described first respectively is connect, the both ends difference of first torsional spring It is arranged on the fixed frame 1 and the switch actuator 44, described second starts turning one end of part 45 and switch drive Position rotation connection on the other end of moving part 44, described second starts turning the other end of part 45 and the turntable 33 is matched It closes；When one end of the switch actuator 44 is fastened on the other end that first starts turning part 43, the first switch 100 At normally open；It is rotated when the beginning key 41 drives described first to start turning part 43 by the beginning push rod 42, institute It is released on the other end that the one end for stating switch actuator 44 starts turning part 43 from described first, the switch actuator 44 The other end be resisted against in the first switch 100 make first switch 100 be closed；The turntable 33 starts to turn by described second Moving part 45 drives the switch actuator 44 to rotate, and so that one end of the switch actuator 44 is fastened on first and starts turning part 43 The other end on.It is started turning described second and is equipped with side impeller 451 on part 45, the side impeller 451 is for pushing institute State one end of the arm of force 32.

It further include rotation seat (invisible in figure) in the present embodiment, the rotation seat and the fixed frame 1 are rotatablely connected, The medium position of the mobile control piece 36 of the tone arm is rotated upwardly and downwardly with the rotation seat to be connect, the mobile control piece 36 of the tone arm Control-rod 361 on one end is located in the inner ring track groove 333 or the outer ring track 336, the mobile control piece of the tone arm 36 other end and the rotation controling piece 23 of the tone arm mechanism 2 are rotatablely connected, and the crescent driving piece 335 is for controlling institute Stating control-rod 361 is to move in the inner ring track groove 333, or move in 336 slot of outer ring track.

In the present embodiment, further includes the second switch 51 being electrically connected with the circuit and rotate company with the fixed frame 1 The power supply rotating member 52 connect, the second switch 51 are used to control the connection of power supply at normal closure state, the second switch 51, The second switch 51 is arranged on the power supply rotating member 52, and the slide bar 53 of the power supply rotating member 52 is arranged described second In slot 352, described time arm moving member 35 drives the power supply rotating member 52 to rotate by the slide bar 53, in the process of rotation In, the tone arm mechanism 2 opens the second switch 51.

It further include carry arm mechanism 6 in the present embodiment, the carry arm mechanism 6 is arranged on the fixed frame 1, the pause 71 mechanism of key or the structure of lifting drive the carry arm mechanism 6 to lift the tone arm 21.

The carry arm mechanism 6 includes carry arm part 61, the 4th elastic component 62 and carry arm axis 63, and the carry arm part 61 is arranged in institute The upper end of carry arm axis 63 is stated, the lower end of the carry arm axis 63 passes through the fixed frame 1 and is located at the lower section of the fixed frame 1, The lower end of the carry arm axis 63 is equipped with carry arm locating part 64, and the 4th elastic component 62 is set in the fixed frame 1 and described On the carry arm axis 63 between carry arm locating part 64.

71 mechanism of pause button includes that pause button 71, pause push rod 72 and pause rotating member 73, the pause are pressed Key 71 is connect with one end of the pause push rod 72, and the other end of the pause push rod 72 is connect with the pause rotating member 73, The pause rotating member 73 pushes the carry arm part 61 to lift the tone arm 21.

In the present embodiment, the tone arm mechanism 2 includes tone arm seat 24, the tone arm 21 and is arranged on the tone arm 21 The pickup 22, the tone arm 21 are arranged on the tone arm seat 24, and the tone arm seat 24 is arranged on the fixed frame 1, Rotation controling piece 23 is provided on the tone arm seat 24.

It further include speed regulation key 8 in the present embodiment, the speed regulation key 8 is electrically connected with the circuit, and the speed regulation is pressed Key 8 is used to adjust the velocity of rotation of the motor 11.

The course of work of the utility model is as follows:

Disc is placed on the disc record, the disc record compressing is described mobile axial on the load-carrying baffle 3351 Lower movement, the crescent driving piece 335 also move downward.

One, after pressing beginning key 41, the beginning push rod 42 pushes described first to start turning the rotation of part 43, And the extended end for starting push rod 42 pushes the pushing structure 322 of the arm of force 32, so that the arm of force 32 rotates. First elastic component 46 elongates, and gives the described first active force for starting turning one opposite direction of application of part 43, and described first Before starting turning the rotation of part 43, one end of the switch actuator 44 is fastened on the other end that first starts turning part 43.Institute It states first to start turning after part 43 rotates, the other end that one end of the switch actuator 44 starts turning part 43 from described first On release, the torsional spring drives the switch actuator 44 to rotate, and the other end of the switch actuator 44 is resisted against institute Stating is closed first switch 100 in first switch 100.Due to the rotation of the switch actuator 44, so that described second starts Rotating member 45 also rotates synchronously, and described second other end for starting turning part 45 stirs the crescent and drives piece 335 to separate The center of rotation direction of the turntable 33 moves, and the crescent driving piece 335 blocks 336 slot of outer ring track.

The first switch 100 is closed, and the circuit conveying control signal gives the motor 11, and the motor 11 starts work Make, the motor 11 drives the disc record to rotate.The tone arm 21 is moved on disc, the pickup 22 and record contacts and It is moved on disc.As the pickup 22 moves on disc, also with being swung, the tone arm is mobile to be controlled the tone arm 21 The control-rod 361 of product 36 is located in the inner ring deep trouth 3331, and the rotation controling piece 23 is mobile relative to the tone arm Control piece 36 rotates.

When disc finishes, the first pivot protrusion on the rotation controling piece 23 is resisted against the another of the arm of force 32 On end, so that the arm of force 32 rotates, one end of the arm of force 32 is acted on the lower movement lug boss 3421, so that described Lower movement lug boss 3421 moves, and second motion control 342 and the upper movement lug boss 3422 are also with movement, institute Stating movement lug boss 3422 drives first motion control 341 to move, so that the motion control portion 3411 is resisted against In the rotate gear 13, so that the rotate gear 13 is engaged and is driven with the side tooth 331 on the side wall of the turntable 33 The turntable 33 is moved to rotate.After a week, the rotate gear 13 passes through second motion control 342 for the rotation of turntable 33 First motion control 341 is driven to move, so that the motion control portion 3411 described in the notch 332 turns far from described Moving gear 13.

In the rotation process of the turntable 33, the upper protrusion of described time arm moving member 35 is in the outer ring track It is moved in 336, so that described time arm moving member 35 moves back and forth on the upper surface of the fixed frame 1, the third bullet Property part 101 apply a pulling force for moving it to 33 direction of turntable to the arm moving member 35 that returns always.At described time When arm moving member 35 is moved to the direction far from the turntable 33, the carry arm structure 354 is resisted against on the carry arm axis 63, institute Stating carry arm axis 63 drives the carry arm part 61 to move upwards, and the carry arm part 61 lifts the tone arm 21.Described time arm moves The lower convexity 353 of moving part 35 drives another end motion of the switch actuator 44, i.e., the described switch actuator 44 rotates, And the other end of the switch actuator 44 is in normally open far from the first switch 100, the first switch 100, One end of the switch actuator 44 rotates, and first elastic component 46 drives described first to start turning the rotation of part 43, so that One end of the switch actuator 44 is fastened on the other end that first starts turning part 43.At the first switch 100 In normally open, the motor 11 stops working.

When moving in described time arm moving member 35 to the direction far from the turntable 33, second slot 352 drives institute The slide bar 53 for stating power supply rotating member 52 moves, so that the power supply rotating member 52 rotates, in the course of rotation, described turn Second pivot protrusion of dynamic control piece 23 opens the second switch 51, and the circuit is unplugged.

In the rotation process of the turntable 33, after the carry arm part 61 lifts the tone arm 21, the tone arm is mobile The control-rod 361 of control piece 36 leaves the inner ring deep trouth 3331, and the control-rod 361 is in the inner ring track groove 333 Middle movement, according to lever principle, the other end of the mobile control piece 36 of the tone arm is tightly pressed against on the rotation controling piece 23.By It is moved in the inner ring track groove 333 in the control-rod 361, so that the mobile control piece 36 of the tone arm rotates, it is described to sing The other end of the mobile control piece 36 of arm drives the rotation controling piece 23 to rotate, and then the tone arm 21 is driven to move, so that institute Tone arm 21 is stated to lift and return to initial position.

Two, when pressing the reset key, 312 ejection of reset push rod is on the pushing structure 322, so that institute The rotation of the arm of force 32 is stated, until the tone arm 21 lifts and returns to initial position.Specific work process is as the above process, at this In do not repeated to the identical course of work.Difference is that the crescent drives piece 335 by the inner ring track groove 333 block, and the control-rod 361 moves in 336 slot of outer ring track.

When pressing the pause button 71, the pause button 71 drives the pause push rod 72 to move, the pause Push rod 72 pushes the pause rotating member 73 to rotate, and the pause rotating member 73 pushes the carry arm part 61 to lift the tone arm 21 It rises.

The utility model is after disc has been sung or multiple due to using time arm mechanism and the first switch automatically When position, the first switch restores normally open, and the arm mechanism that returns automatically drives the tone arm of the tone arm mechanism to lift and return To initial position, do not need to extend the time of contact of the pickup and disc using manually the tone arm is removed, have Easy to use, the advantages that extending service life and improving the performance of phonograph.

It should be noted that being explained in detail for the respective embodiments described above, purpose be only that the utility model into Row explain, in order to be able to preferably explanation the utility model, still, these description cannot with any explanation at be to this The limitation of utility model, in particular, each feature described in various embodiments can also mutual any combination, thus Other embodiments are formed, in addition to there is clearly opposite description, these features should be understood to can be applied to any one reality It applies in mode, and is not limited merely to described embodiment.

Claims (10)

1. a kind of automatic phonograph for returning arm function, including circuit board, tone arm mechanism, disc record and the electricity being arranged on fixed frame Machine, it is characterised in that: it is additionally provided on the fixed frame and returns arm mechanism and the first switch at normally open automatically, described the One switch and the motor are electrically connected with the circuit on the circuit board respectively, after the first switch closure, the motor The disc record is driven to rotate, the pickup and the record contacts on the disc record of the tone arm mechanism；It is sung when the pickup is moved to When the most inner side of piece or the reset key mechanism of the driving automatic time arm mechanism, the first switch restores normally open, described Automatically returning arm mechanism drives the tone arm of the tone arm mechanism to lift and return to initial position.

2. the automatic phonograph for returning arm function according to claim 1, it is characterised in that: the arm mechanism that returns automatically includes Arm moving member and the mobile control piece of tone arm, the reset key machine, turntable, motion control mechanism, return at the arm of force in the reset key mechanism The reset push rod of structure is used to driving the rotation of the arm of force, the medium position of the arm of force and the turntable respectively with the fixation Frame rotation connection, the motion control mechanism are arranged on the turntable；One end of the arm of force drives the motion control machine Structure movement, under the action of the motion control mechanism, the rotation axis of the disc record drives the turntable rotation, and the turntable drives The dynamic arm moving member that returns is mobile, and described time the tone arm is lifted in the one end of arm moving member far from the disc record, the turntable The tone arm is driven to return to initial position by the mobile control piece of the tone arm.

3. the automatic phonograph for returning arm function according to claim 2, it is characterised in that: it further include starting press button mechanism, The beginning press button mechanism drives the first switch closure.

4. the automatic phonograph for returning arm function according to claim 3, it is characterised in that: the beginning press button mechanism includes Start key, start push rod, first start turning part, switch actuator, second start turning part, the first elastic component and first turn round Spring, described first start turning part, the switch actuator and described second start turning part respectively with the fixed frame rotate Connection, one end that the both ends for starting push rod start turning part with the beginning key and described first respectively is connect, described One end that the both ends of first elastic component start turning part with the fixed frame and described first respectively is connect, first torsional spring Both ends are separately positioned on the fixed frame and the switch actuator, and described second starts turning one end of part and the switch Position rotation connection on the other end of actuator, described second starts turning the other end of part and turntable cooperation；When One end of the switch actuator is fastened on first when starting turning on the other end of part, and the first switch is at normally open； When the beginning key starts turning part rotation, one end of the switch actuator by beginning push rod driving described first It starts turning from described first and is released on the other end of part, the other end of the switch actuator is resisted against described first and opens Shutting is closed first switch；The turntable starts turning part by described second and drives the switch actuator rotation, makes institute The one end for stating switch actuator is fastened on first and starts turning on the other end of part.

5. the automatic phonograph for returning arm function according to claim 2, it is characterised in that: the motion control mechanism includes First motion control and the second motion control, first motion control and second motion control are stacked on top of one another Setting, and one end of first motion control and one end of second motion control turn with the fixed frame respectively Dynamic connection, be arranged on the turntable it is jagged, in the motion control portion and the rotation axis of first motion control A part of rotate gear is located in the notch, and one end of the arm of force drives the fortune by second motion control Dynamic control unit is resisted against in the rotate gear, so that the side tooth engagement on the side wall of the rotate gear and the turntable And the turntable is driven to rotate；After a week, the rotate gear is driven by second motion control for the turntable rotation The first motion control movement, so that motion control portion is far from the rotate gear described in the notch.

6. the automatic phonograph for returning arm function according to claim 2, it is characterised in that: on the lower surface of the turntable Inner ring track groove, middle ring track groove, outer ring track and crescent driving piece, the lower end of a shifting axle and crescent is provided with to drive Piece connection, the upper end of the shifting axle pass through the turntable, are provided with load-carrying baffle on the upper end of the shifting axle, and one second Elastic component is set on the shifting axle between the load-carrying baffle and the turntable, the inner ring track groove and the middle ring Track groove part superposition is provided with inner ring deep trouth in the inner ring track groove, is provided with middle ring in the middle ring track groove Deep trouth, the local groove of the middle ring deep trouth are overlapped with the inner ring deep trouth.

7. the automatic phonograph for returning arm function according to claim 6, it is characterised in that: it further include rotation seat, described turn Dynamic seat and the fixed frame are rotatablely connected, and the medium position and the rotation seat of the mobile control piece of the tone arm rotate upwardly and downwardly company It connects, the control-rod on one end of the mobile control piece of the tone arm is located in the inner ring track groove or the outer ring track, described The other end of the mobile control piece of tone arm and the rotation controling piece of the tone arm mechanism are rotatablely connected.

8. the automatic phonograph for returning arm function according to claim 6, it is characterised in that: the two of described time arm moving member The first slot and the second slot are respectively arranged on end, the rotation axis is located in first slot, mobile in described time arm Protrusion and lower convexity are respectively arranged in the upper and lower surfaces of part, the upper protrusion is located in the outer ring track, the The both ends of three elastic components are connect with the fixed frame and described time arm moving member respectively, are turned in described time arm moving member far from described Carry arm structure is provided on one end of disk.

9. the automatic phonograph for returning arm function according to claim 8, it is characterised in that: further include electrical with the circuit The second switch of connection and the power supply rotating member being rotatablely connected with the fixed frame, the second switch is at normal closure state, institute It states second switch and is arranged on the power supply rotating member for controlling the connection of power supply, the second switch, the power supply rotation The slide bar of part is arranged in second slot, and described time arm moving member drives the power supply rotating member to turn by the slide bar Dynamic, in the course of rotation, the tone arm mechanism opens the second switch.

10. the automatic phonograph for returning arm function according to claim 8, it is characterised in that: it further include carry arm mechanism, it is described Carry arm mechanism is arranged on the fixed frame, drives the carry arm mechanism to lift the tone arm by pause button mechanism.