CN2054930U

CN2054930U - Magnetic head slider unit of microcomputor cassette answer recorder

Info

Publication number: CN2054930U
Application number: CN 89217722
Authority: CN
Inventors: 林铭
Original assignee: Shanmao Enterprises Co ltd
Current assignee: Shanmao Enterprises Co ltd
Priority date: 1989-10-04
Filing date: 1989-10-04
Publication date: 1990-03-21

Abstract

The utility model discloses a magnetic head slider device of microcomputer cassette answer reorder. When the planet shaft do revolution for a column-shaped gear by the transmission device of the inner cassette tape of an answer reorder, a swinging frame arranged at a chassis can be dialed; the convex opening shape with cam principle on the swinging frame can push and control the other swinging body so as to make a pushing rod on the swinging body push a magnetic head slider fixed on the magnetic head to slide towards the inner part or towards the direction departing from the cassette tape device; the utility model is a device with the characters of saving material, cost, and space.

Description

Magnetic head slider unit of microcomputor cassette answer recorder

The utility model is relevant for a kind of micro computer cassette answer recorder magnetic head skate apparatus, and the design of its exquisiteness can reduce cost when making, and effective really when using.

The magnetic head slide mechanism of general known answer phone is all controlled the sliding function that it should have with an electromagnet apparatus at present, though answer phone is normally moved with electromagnetic type, but palpus device one electromagnet on answer phone, with drawing magnetic head slide plate, the inventor is through after repeatedly observing and testing, the poor design of feeling to utilize electromagnet apparatus to come the drawing magnetic head to slide obviously to be a kind of cost of idleness deeply and taking up room, therefore be to study intensively, finally design a kind of the change under original operation of existing product, can not need the electromagnet apparatus utility model of drawing magnetic head slip really again.

The utility model is through the planet axostylus axostyle of answer phone lagging strap gearing, when it does revolution to stud wheel, can stir a rocker of being located at the chassis, utilize the recess shape design that has camming action on the rocker, promote and control another pendulum mass, inwardly slide or deviate from the device of cassette tape to the magnetic head slide plate that makes push rod on this pendulum mass can promote fixed head, so can not need the setting of electromagnet, to reduce the function of manufacturing cost and raising quality (promptly reducing the Parts Breakdown chance), be an extremely exquisite and practical mechanism design in fact.

For making shape, structure, device and the function thereof of auditor to the present invention, make further understanding and understand, it is as follows to join description of drawings with regard to the embodiment of the utility model now:

Fig. 1 is the exploded view of the utility model embodiment.

Fig. 2 is the utility model combination view.

Fig. 3 is the action synoptic diagram of the utility model in by " record (putting) sound " key the time.

Fig. 4 is the action synoptic diagram of the utility model in by " preceding commentaries on classics " key the time.

The figure number simple declaration:

(1) ... chassis (2) ... axle bed (3) ... belt wheel

(4) ... stud wheel (5) ... axostylus axostyle (6) ... solid of revolution

See also shown in accompanying drawing 1 and the accompanying drawing 2, (1) top is provided with an axle bed (2) to the utility model on the chassis, pegged graft by axostylus axostyle (5) and fix a belt wheel (3) with stud wheel (4) in its axle center, belt wheel (3) then drives through the motor transmission with balata belt (12); Go up to articulate in axle bed (2) in addition and be arranged with single-revolution body (6), solid of revolution (6) edge before is a fan shape, and utilize both sides of the edge to be rib (7) (8), and establish a planet axostylus axostyle (9) at its front end, for installing one planet idle pulley (10), and between planet idle (10) and solid of revolution (6), establish a pressure spring (28), by the meshing relation between planet idle (10) and stud wheel (4), be the center rotation with axle bed (2) and can impel drive solid of revolution (6); Side is provided with the ring-type annular wheel (11) of a semicircle outside solid of revolution (6) again, make when planet idle (10) along with solid of revolution (6) when axle bed (2) revolves round the sun, planet idle (10) is meshed with ring-type annular wheel (11), because stud wheel (4), planet idle (10) and ring-type annular wheel (11) mesh simultaneously, cause planet idle (10) on the path of its revolution, to have the function of resisting resistance again; In addition, on chassis (1), be provided with a washer (13), and this washer (13) is arranged on the rotary path of solid of revolution (6), make solid of revolution (6) when revolution, when washer (13) blocks its rib (7) or (8), the planet wheel (10) that solid of revolution (6) is gone up is just engageable to drive the gear that rotating shaft (16) or (17) is gone up in cassette tape, to reach the cassette tape that drives answer phone; The rocker (19) and the utility model side outside ring-type annular wheel (11) is pivoted, this rocker (19) articulates with axostylus axostyle (18) and is fixed on the chassis (1), and which is provided with adjacent two recesses (20) and (21) of tool cam function, the centre then protrudes out a fork (23) and respectively there is a blend stop (22) both sides, and protruded out forever on the revolution travel path of axostylus axostyle (9) of planet idle (10) by contacting with the tail end that keeps fork (23) of blend stop (22) and chassis (1) sidewall, being provided with a pendulum mass (24) again in addition and going up another balance staff (27) with chassis (1) between rocker (19) and chassis (1) articulates fixing, and the end face of pendulum mass (24) is provided with a register pin (25), when rocker (19) drives pendulum mass (24) swing, can embed in the recess (20) or (21) of rocker (19), and because of the distance of protuberance (29) end face between adjacent two recesses (20) and (21) to balance staff (18), than the bottom of recess (20) and (21) to the distance of balance staff (18) for growing, so after register pin (25) embeds recess, unlikely random slip, opposite side at pendulum mass (24) then is provided with a push rod (26) again, and when swinging, pendulum mass (24) can promote to be arranged at the magnetic head slide plate (14) of chassis (1) another side, and schedule magnetic head slide plate (14) because of an end again, the other end is fixed in the acting force of the tension spring (15) of chassis (1), makes register pin (25) that the inertial force of embedding recess (20) or (21) be arranged.

According to above-mentioned structure please consult Fig. 1 and Fig. 2 again and cooperate Fig. 3 and the action synoptic diagram of Fig. 4 shown in, its operational scenario is described as follows;

General answer phone mainly has four buttons, i.e. " record (putting) sound ", " preceding commentaries on classics ", " counter-rotating " reaches four keys such as " stopping ", and above-mentioned button be pressed the back everything fully by decide within the central microprocessor (CPU) formula control its order, and before using the present invention, the planet idle of its inside (10) is all returned one of the driving runner (17) that is against cassette tape side because of the control of CPU, can put into the utility model according to general procedure this moment with cassette tape, and when the user pushes " record (putting) sound " key or touched " record (putting) sound " key by the external phone sound, its the action at the beginning of as shown in Figure 3A, and belt wheel (3) promptly is rotated counterclockwise through balata belt (12) driving by motor, and by the stud wheel (4) of belt wheel (3) below and the meshing relation of planet idle (10), solid of revolution (6) also is rotated counterclockwise, and touch fork (23) (shown in Fig. 3 B) when planet axostylus axostyle (9) returns back to, promptly driving rocker (19) is center and rotation with balance staff (18), and make the former register pin (25) that is positioned at the last recess (21) of rocker (19) be embedded the position of another recess (20) by ejection, cause drive pendulum mass (24) and do clockwise swing with balance staff (27), promote the usefulness that magnetic head slide plate (14) connects airtight magnetic head and cassette tape to reach the last push rod (26) of pendulum mass (24), after this planet idle (10) is that escape fork (23) continues to advance to counter clockwise direction, when the rib (7) up to solid of revolution (6) touches catch (13), it is the ring-type annular wheel (11) that planet gear (10) breaks away from semicircle, and just be meshed (shown in Fig. 3 C) with the gear of cassette tape driving runner (16), to reach the function of recording or playback.

When desiring to make audiotape forward during fast rotational, can press " preceding commentaries on classics " key, at first motor driven belt wheel (3) is rotated counterclockwise, this moment the planet axostylus axostyle (9) will be as above (action of recording playback sound) described, causing push rod (26) to promote magnetic head slide plate (14) slides into to the cassette tape direction, but because when being subjected to being controlled in planet idle (10) and just having touched runner (16) of CPU (as the position of Fig. 4 A), motor reverses (turning clockwise) immediately and makes planet idle (10) toward revolution, planet axostylus axostyle this moment (9) will oppositely be stirred the fork (23) of rocker (19) once again, cause the register pin (25) of pendulum mass (24) to be returned within the recess (21) of rocker (19) (shown in Fig. 4 B), and push rod (26) is no longer to magnetic head slide plate (14) application of force, magnetic head slide plate (14) is then retracted it by tension spring (15), make magnetic head break away from cassette tape, and the strength that returns back to top because of the magnetic head slide plate, making rocker (19) and pendulum mass (24) remain on register pin (25) embeds on the position of recess (21), the utility model and make magnetic head break away from cassette tape, and planet axostylus axostyle (9) wherein is not fully by fork (23) (shown in Fig. 4 C) simultaneously, immediately because the control of CPU makes motor once again with the counter clockwise direction high speed rotating, and then planet idle (10) is meshed with the gear that cassette tape drives runner (16), batch cassette tape to reach to advance at utmost speed, and make magnetic head break away from cassette tape (shown in Fig. 4 D).

When desiring to make the utility model do counter-rotating fast, then press " counter-rotating " key, motor will be directly be done the clockwise direction rotation apace, thus the time planet idle (10) just be meshed (as shown in Figure 2) originally with cassette tape driving runner (17), so can reach the purpose of quick counter-rotating.

The utility model is being pressed behind " stopping " key or when above-mentioned three kinds of actions stop, its motor all can be done the clockwise direction revolution through CPU control, make planet idle (10) rest on runner (17) position engaged after, motor stops operating again, no matter and whether magnetic head slide plate (14) is sliding to the position that cassette tape connects airtight magnetic head and cassette tape, all can make it be returned to the position (position as shown in Figure 2) that breaks away from cassette tape, to wait for the beginning of action next time.

In sum, the utility model really is a simple and practical design, and can reduce the system of product Cause this, and assembly space, strength can be saved the power supply that uses machine, proposes utility application so reach " novelty " according to its " practicality ".

Claims

A kind of micro computer cassette answer recorder magnetic head skate apparatus comprises:

-chassis-have two runners on it for the transmission cassette tape, and be the main body of each parts of device;

-belt wheel-by motor which is provided with a stud wheel through the balata belt transmission, is fixed on the axle bed on chassis;

-planet idle-it is that the axle center that is placed in stud wheel with a planet axostylus axostyle mat spring crimping is on the rotary body of rotating shaft, and be meshed with stud wheel, and this planet idle is in rotating to when left or the rightest, just be meshed, and the catch on the suspension chassis limits with two runners of above-mentioned chassis transmission cassette tape;

-ring-type annular wheel-be fixed on the chassis, concentric with stud wheel, and can be meshed with planet idle,

-magnetic head slide plate-its on be fixed with magnetic head, cooperate a tension spring and can on the chassis, slide;

It is characterized in that outside the above-mentioned ring-type annular wheel that side is provided with to articulate one of is fixed on the chassis rocker and a pendulum mass, and have a fork and two recesses on the rocker with cam function, then be provided with on the goods of furniture for display rather than for use dowel can with the recess tabling of rocker, but and the push rod of a push-and-pull magnetic head slide plate, and be fixed in planet axostylus axostyle on the solid of revolution, engagement drive because of planet idle and stud wheel and ring-type annular wheel, make the planet axostylus axostyle in the conduct of revolution, can stir the fork that protrudes out on the rocker rotates the drive rocker, impel its position of pendulum mass register pin conversion that is embedded in the rocker recess, and then make the push rod ejection magnetic head slide plate of pendulum mass slide into forward or retreat, and the both sides of rocker are provided with a blend stop in addition, can compress the chassis, impel planet axostylus axostyle escape fork after, this fork still maintains on the revolution route of planet axostylus axostyle.