CN2245258Y - Fast forward, rewind changeover mechanism for recorder - Google Patents

Abstract

The utility model relates to a fast forward and rewind converting mechanism for recorders, particularly a device which changes the pushing and pressing type of an operating key for fast forward and rewind conversion into a light touch type and enhances operation performance and operation feeling. The utility model mainly uses a locking part material 14 to lock a sliding part material 13 energized by a spring at a specified position, when a fast forward key or a fast rewind key 20 pushed and pressed on one hand is carried out with locking relief, cam surfaces 19b and 20b are used for making a blocking and locking part material 18 rotate according to a prescribed direction.

Description

The F.F. of sound-track engraving apparatus, rewinding throw-over gear

F.F., the rewinding throw-over gear of the relevant a kind of sound-track engraving apparatus of the utility model.

In the past, as this throw-over gear, select one of in a pair of driven wheel of retrograde rotation each other arbitraryly the time,, the side corresponding to a pair of strip winding wheel shaft side gear of driven wheel is rotated by this neutral gear with the neutral gear engagement, and desire to make its send fast the band and rewinding known, and in the more cheap cassette player, much more general directly bestow operating key, and neutral gear etc. is moved with external force, with the side engagement of driven wheel, as formation.

For this reason, need sizable power during operation push-button, and the stroke of operating key is also quite big, compares with the full logical type cassette player class of the throw-over gear that possesses automatically controlled helix tube type, operating performance is obviously inferior.

Therefore, the purpose of this utility model is the pushing operation of the operating key of F.F., rewinding conversion reaches gently it and separates, and improves operating performance and operation feeling as the technical problem that should solve.

For this reason, following F.F., rewinding throw-over gear have been invented.Be this, the utility model selects one when meshing for either party in a pair of driven wheel of retrograde rotation each other and neutral gear, make side rotation by this neutral gear corresponding to a pair of strip winding wheel shaft side gear of aforementioned driven wheel, in the cassette player that makes it F.F. and rewinding, make it on basal disc, to move back and forth, and constantly be subjected to the sliding part material of energizing to the double action direction, with be contained in the aforementioned sliding part material that aforementioned basal disc moves according to the double action direction, the latch part material that it can be locked in two places along moving direction, with can join with aforementioned locking part material, when being subjected to pushing operation, solve the fast forward button and the rewind key of the lock-out state of aforementioned latch part material and aforementioned sliding part material, with be located at aforementioned fast forward button or the rewind key that aforementioned basal disc is subjected to pushing operation and have suitable carrier, and foundation is that fast forward button also is a rewind key with the button that this carrier joins respectively, the retaining lock section material of reverse displacement each other and aforementioned sliding part material are rotated freely to be set, have and aforementioned retaining lock section material wedging, throw off possible retaining lock section material, during aforementioned sliding part material double action, corresponding to the aforementioned retaining lock section material displacement direction of the aforementioned retaining lock section material of wedging mutually, turn portion material according to a direction turn, be connected with aforementioned turn material portion material with the material of supporting aforementioned neutral gear, driven and aforementioned turn portion material, and the linking part material that aforementioned neutral gear is moved to assigned position.

The sound-track engraving apparatus of above-mentioned formation, the sliding part material that can move back and forth on basal disc is subjected to the power of energizing of going to the double action direction, at the position latch part material of regulation, makes it to be in the lock state down and enters tone playing state.At this moment, as pushing operation fast forward button or rewind key, this key then joins with the latch part material and keeps off the lock section material and joins, and removes the lock-out state of sliding part material, makes the direction displacement of retaining lock section material according to regulation simultaneously.Thus, the sliding part material begins to move to following latched position, turn portion material that is contained in the sliding part material and retaining lock section material wedging, are driven in the position that the linking part material of turn material makes neutral gear comply with regulation and move according to a direction turn corresponding to the displacement direction of retaining lock material.Like this, either party and neutral gear are selected an engagement in a pair of driven wheel of retrograde rotation each other, by intermediate gear drives, then carry out the F.F. or the rewinding action of tape corresponding to the strip winding wheel shaft side gear of this driven wheel.Thereafter, as being pushed operation one side's button, then this key and latch part material and retaining lock section material join, the lock-out state of releasing sliding part material, simultaneously, displacement in a side retaining lock section material to the opposite direction displacement.So the sliding part material moves, the rotating part material is to originally position turn.And the linking part material makes neutral gear move to position originally, throws off to the engagement of neutral gear and driven wheel.

The utility model advantage is in the F.F., rewinding throw-over gear of sound-track engraving apparatus, by pushing away fast forward button or rewind key, make the sliding part material make its slip from lock-out state liberation, the power of energizing with spring moves neutral gear, thereby during the conversion operations of F.F., rewinding, the button operation sense is light, have operating performance and operation sense no less than full logical type, with miniaturization, light-weighted mechanism can be with the effect of its realization.

Be described further below in conjunction with accompanying drawing.

Fig. 1 is the F.F. of the utility model embodiment, the key diagram of rewinding throw-over gear; The state that shows F.F. mode FF.

Fig. 2 is the drive system key diagram of the sound-track engraving apparatus of the utility model embodiment.

Fig. 3 is the exploded perspective view of key diagram of F.F., the rewinding throw-over gear of the utility model embodiment.

Fig. 4 is the F.F. of the utility model embodiment, the key diagram of rewinding throw-over gear; Demonstrate the state of band mode.

Fig. 5 is the F.F. of the utility model embodiment, the key diagram of rewinding throw-over gear; The state that shows playback modes FF.

Fig. 6 is the F.F. of the utility model embodiment, the key diagram of rewinding throw-over gear; Show the state of having removed the F.F. mode.

Fig. 7 is the F.F. of the utility model embodiment, the key diagram of rewinding throw-over gear; The state that shows the fast RW of falling the mode.

Please refer to Fig. 1～Fig. 7 an embodiment of the present utility model is described.As shown in Figure 2, on the basal disc 1 of cassette player, dispose left and right a pair of strip winding wheel shaft 2,3 according to the spacing of stipulating, the strip winding wheel shaft side gear 2a, the 3a that protrude in strip winding wheel shaft 2,3 bottoms of basal disc 1 downside are loaded on the axle.Be contained on the basal disc 1 rotation freely, on a pair of flywheel 4,5 in the face of strip winding wheel shaft side gear 2a, 3a position, be formed with belt grooves 4a, 5a and driven wheel 4b, 5b.Hang over the balata belt 6 on belt grooves 4a, the 5a, stretch the axle head pulley 7a that causes CD-ROM drive motor 7 by tension roller 6a, flywheel 4,5 is subjected to motor 7 to drive retrograde rotation each other.

The neutral gear 8 that is arranged in strip winding wheel shaft side gear 2a, 3a forms one with gear wheel 8a and pinion wheel 8b on same axis, be subjected in the face that is parallel to basal disc 1, to be provided with the support at arm 9 tips of shaking freely, action by aftermentioned F.F. rewinding throw-over gear makes arm 9 when left shakes, in the time of gear wheel 8a and driven wheel 4b engagement, pinion wheel 8b is meshed with strip winding wheel shaft side gear 2a, on the one hand, when shaking to the right, when gear wheel 8a is meshed with driven wheel 5b, pinion wheel 8b is meshed with strip winding wheel axle gear 3a.

The driving pinion 5c that becomes one with aforementioned flywheel 5, and for strip winding wheel shaft side gear 3a, the idle pulley gear 10 that can clutch moves is meshed, and is sound-track engraving apparatus when being in playback modes, neutral gear 8 is positioned at the neutral position; Idle pulley gear 10 makes strip winding wheel shaft side gear 3a rotation, and tape is moved to positive veer, and during F.F. (hereinafter referred to as FF), or during rewinding (hereinafter referred to as RW), the engagement of idle pulley gear 10 and strip winding wheel shaft side gear 3a can disengagement.Moreover driving pinion 5c is meshed with the second gear 10a, and the second gear 10a is meshed with transmission gear 11, and transmission gear 11 nibbles wheel 11a for a short time with transmission and the 3rd gear is the boundary, continues mutually with the mode gear 12a that is supported by fulcrum 12.And, detailed as following with the mode gear 12a of official hour rotation, the sliding part material 13c (with reference to Fig. 1) of F.F., rewinding throw-over gear is slided to left.The left side of basal disc 1, during the F.F. mode, the fast forward button 19 that is pushed and above when falling the mode, the RW key 20 that pushed all was set at soon.F.F., rewinding throw-over gear then are described.

Fig. 1 is F.F. under the explanation F.F. state, rewinding throw-over gear constitutional diagram.Fig. 3 is the exploded perspective view of same mechanism.In addition, omit among basal disc 1 shown in Figure 2, Fig. 1, Fig. 3 only represents the installation portion of spring.Among Fig. 1 and Fig. 3, sliding part material 13 is installed on the basal disc 1 (with reference to Fig. 2) and can slides according to left and right directions, and, constantly energize to the left and right with the spring 13a that is contained between the basal disc 1.On the one hand, aforementioned manner gear 12a go up to form heart-shaped cam surface 12b, the post 13b that is provided with below of sliding part material 13a can with cam surface 12b clutch mutually.And during mode gear 12a rotation, be subjected to camming action, the power of energizing of sliding part material 13 antagonism spring 13a direction is to the left and right released.On the edge of sliding part material 13, retaining lock protuberance 13c, 13d have been formed according to two places before and after the length direction.

Support aforementioned fulcrum 12 rotations latch part material 14 freely, energize with spring 14b and to rotate to clockwise direction, the retaining of sliding part material 13 lock protuberance 13c or lock pawl 14a with blocking for 13d makes the sliding part material 13 can be at two place's locking positions along glide direction.

In addition, on the aforementioned basal disc 1, retaining lock section material 18 by fulcrum 18c rotation freely, the both sides of retaining lock section material 18 are formed with retaining lock protuberance 18a, the 18b central portion is provided with the hole 18d that forms as shown in Figure 3, point is provided with lug 18c, and, the aforementioned fast forward button 19 and the rewind key 20 of direction slip to the left and right are housed on the basal disc 1, and be contained in spring 19a between the basal disc 1, energize to 20a and protrude in the left end of basal disc 1.On two buttons 19,20, make and keep off retaining lock section material 18 reverse each other mobile cam surface 19b, the 20b that the lug 18c of lock section material 18 joins, with carrier 19c, the 19d, 20c, the 20d that make with the catch pawl 14a linking part turn of aforementioned latch part material 14, and be provided with can with wedging hook 19e, the 20e of catch pawl 14a wedging.

On the aforementioned sliding part material 13, be equipped with according to fulcrum 15d rotation T word shape turn portion material 15 freely, the end of fulcrum 15d is run through by the hole 18d of retaining lock section material 18.Formed on the turn portion material 15 can with the retaining lock protuberance 18a of retaining lock section material 18 from, the second pawl 15b that closes, with retaining lock protuberance 18b can be from, the three-jaw 15c that closes, and, be located at the first pawl 15a on the turn portion material 15, be flush-mounted on the deep trouth 16b of rotation L arm 16 freely of fulcrum 16a of basal disc 1.In addition, the arm 7a of the lug 16c of L arm 16 and the plate 17 that can on basal disc 1, horizontally slip wedging mutually.Moreover, between plate 17 and the basal disc 1, the spring 17b of the function that makes plate 17 be reset to the neutral position is housed.

Therefore, during turn portion material 15 turns, by the turn of L arm 16, plate 17 can horizontally slip, and on the L shaped groove 17c of plate 17, is embedded with the end that shakes arm 9 freely as the support of sketch support sector in addition.Along with plate 17 slide through shaking of arm 9, neutral gear 8 moves to the position of regulation.Moreover L arm 16 and plate 17 constitute the alleged linking part material of the utility model.

The F.F. that as above constitutes, the effect of rewinding throw-over gear below are described.From shown in Figure 4 when going out the band mode and travelling to playback modes shown in Figure 5, mode gear 12a rotation, cam surface 12b push away post 13b sliding part material 13 after high order end is transferred, retreat.At this moment, the latch part material 14 of energizing with spring 14b makes catch pawl 14a retaining be buckled in catch pawl protuberance 13d, with this make sliding part material 13 antagonism spring 13a (with reference to Fig. 3) thus energize and be locked in the position of regulation.Moreover neutral gear 8 remains on neutral position (with reference to Fig. 2).

In order to make the tape F.F., when state shown in Figure 5 pushed fast forward button 19 down, the carrier 19c of fast forward button 19 pushed to the catch pawl 14a of latch part material 14, and, the cam part 19b and the lug 18c of retaining lock section material 18 join, and make retaining lock section material 18 to rotation counterclockwise.Thus, sliding part material 13 then slides to left because of catch pawl 14a throws off retaining lock protuberance 13d.Thereafter, with reference to Fig. 1, be contained in rotating part material 15, the three-jaw 15c of sliding part material 13 and the retaining lock protuberance 18b wedging of retaining lock section material 18, enter the anticlockwise attitude of rotation direction, sliding part material 13 stops to slide.Under this state, when solving the pushing of fast forward button 19, the fast forward button 19 of being energized by spring 19a (with reference to Fig. 3) desires to be reset to position originally, but because of wedging groove 19e and catch pawl 14a wedging mutually, so locked in the position of stipulating.Simultaneously, sliding part material 13 is also because retaining is locked teat 13c and catch pawl 14a joins, so locked in the position of regulation.

Therefore, turn portion material 15 is during according to turn counterclockwise, because of the 1st pawl 15a of turn portion material 15 is embedded among the deep trouth 16b of L arm 16, is docile and obedient the clockwise turn so L arm 16 is driven in turn portion material 15, and, the plate 17 of L arm 16 connections is slided to left.Be, as shown in Figure 1, driven wheel 5b continues with neutral gear 8 mutually with strip winding wheel shaft side gear 3a, so strip winding wheel shaft 3 is driven, and tape enters F.F..

Then, when pushing to the rewind key of stating under the F.F. mode 20, as shown in Figure 6, the carrier 20d of rewind key 20 dials up the catch pawl 14a of latch part material 14, begin to slide so the wedging groove 19e of fast forward button 19 mentions removing with the wedging state of retaining lock pawl 19a, be reset to position originally.At this moment, the cam surface 20b of rewind key 20 accepts mutually with the lug 18c of retaining lock section material 18, makes it to the clockwise direction turn, and retaining lock section material 18 resets fully.So, the wedging (with reference to Fig. 1) of the retaining lock protuberance 18b of turn portion material 15 the 3rd pawl 15c and retaining lock section material 18 can be thrown off, and sliding part material 13 slides to the left and right, and the post 13b of sliding part material 13 accepts mutually with the cam surface 12b of mode gear 12a.At this moment, with reference to Fig. 3, the fulcrum 15d of turn portion material 15 goes up the slot part phase wedging of the hole 18d of retaining lock section material 18, make the posture of retaining lock section material 18 remain on originally position, on the one hand, turn portion material 15 is kept off two of lock section material 18 retaining lock protuberance 18a, 18b and is guided to the direction turn that resets.Like this, to the clockwise direction turn, then L arm 16 makes arm 16 according to turn counterclockwise with plate 17 by turn portion material 15, and because of sliding wedging except neutral gear 8 and driven wheel 5b, then F.F. mode is disengaged.

Then, for rewinding, the occasion that playback modes (with reference to Fig. 5) is pressed rewind key 20 down, as shown in Figure 7, retaining lock section material 18 and turn portion material 15 are to the clockwise direction turn, the L arm 16 that is driven in turn portion material 15 is according to turn counterclockwise, and therefore, plate 17 (with reference to Fig. 1 and Fig. 3) is to right-hand slip.

Therefore, the driven wheel 4b of Figure 1 and Figure 2 and strip winding wheel shaft side gear 2a join by neutral gear 8, and therefore, strip winding wheel shaft 2 is subjected to drive and then carries out rewinding.In addition, fall soon in the mode, the occasion that aforementioned fast forward button 19 is pushed away, the turn direction of retaining lock section material 18, turn portion material 15 and L arm 16 is opposite.

Claims (1)

1. F.F., the rewinding throw-over gear on the sound-track engraving apparatus, it is by driven wheel, the F.F. gear assembly material of a pair of retrograde rotation each other, press-key lock arm component material and push the fast forward button of operation and rewind key is formed from external energy, it is characterized in that: have mutually between F.F. or rewind key and its front buttons hammerlock and accept, throw off possible wedging part, and promote F.F. plate and F.F. arm simultaneously, be the action of converse direction mutually, make the F.F. gear move to the above-mentioned a pair of retrograde rotation driven wheel position of engagement on one side on.

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