GB2212966A

GB2212966A - Telephone answering machine construction

Info

Publication number: GB2212966A
Application number: GB8727784A
Authority: GB
Inventors: Han Teng Cheng
Original assignee: LISONIC ELECTRIC CO Ltd
Current assignee: LISONIC ELECTRIC CO Ltd
Priority date: 1987-11-27
Filing date: 1987-11-27
Publication date: 1989-08-02
Also published as: GB8727784D0

Abstract

A support for a telephone answering machine has a base plate 1 and a sliding plate 2 thereon. A position resuming spring 6 engages with lug 21 on plate 2 and lugs 12, 13 on plate 1 to control movement between the plates. Also provided are a mounting for a magnetic erase head, and a tape rotating axle with a magnetic member thereon. The axle can be in either of two positions and a magnetic sensing switch decouples or couples the poorer supply in dependence on the axle positions. <IMAGE>

Description

TITLE: AN-IMPROVED STRUCTURE OF THE DISC OF A TELEPHONE ANSWER BACK/RECORDING MACHINE This invention pertains to an improved structure of the disc of a telephone answer back/recording machine, particularly denoting the one which is focussed on the reinforcement given to the base plate, as well as the improvement given to the assembly of various main fittings such as tape-pressing wheel, sound-silencing magnetic head and the flying wheel, so as to increase its degree of strength, simplify its assembly and reduce its cost of production.

The structure of a conventional telephone answer back/recording machine, which requires comparatively more supplementary component parts or fittings for its assembly, is found to be labor-intensive which resulted in the increasing of its production cost, particularly at the time of mass production.

In view of the above defects, this invention not only has the assembly structure of its spare parts improved, such as having the belt-pressing wheel fixed positioned to cut down the cost of its peripheral supplementary components, the sound silencing magnetic head altered into being locked at one side by screw to save the working hour required for the assembly, the driving assembly of the flying wheel and the convex wheel simplified and improved to produce its practical effects in the area of enabling a simple assembly and save its material and working hour to achieve the main objective of this invention, but also has the degree of strength of the base plate reinforced to increase its durability, so as to achieve another objective of this invention.

For the purpose of providing a better understanding of the characteristics and objectives of this invention, a better embodiment coping with drawings and illustration are given below, in which: FIG. 1 is the obverse side assembly view of the complete set of the better embodiment of this invention.

FIG. 2 is the base plate view and perspective drawing of the better embodiment of this invention.

FIF. 3 is the obverse side solid plane view of various main fittings of the better embodiment of this invention.

FIG. 4 is the reversed side assembly view of the complete set of the better embodiment of this invention.

FIG. 5 is the back side view illustrating the various main component solid plane drawing of the better embodiment of this invention.

FIG. 6 is the toothed gearing convex wheel motion indicative drawing of the better embodiment of this invention.

As shown by FIG. 1, the obverse side assembly view of the complete set of the better embodiment of this invention is illustrated, which comprises of a main base plate 1, the upper and the lower sliding plate 2, the tape-pressing wheel 3 attached to the forementioned plate 2, a sound silencing magnetic head 4, a sound releasing magnetic head 5, a shrinkage spring 6, etc. Moreover, a base plate obverse side structure composed of two rotating axles 7, a positioning spring pin 14 and other main spare parts to cope with and attached to each of the sliding plate 2 is also additionally added.

As shown by FIG. 2, in the base plate view and perspective drawing of the' better embodiment of this invention, several L-shaped or I-shaped reinforcement face 11 are set at the appropriate corner space of the base plate 1, so as to reinforce the degree of strength of the base plate and to lengthen the durability of the disk of the machine.

As shown by FIG. 3, in the obverse side solid plane view of various main fittings of the better embodiment of this invention, a shrinkage spring 6 is set at the lower position of the main fitting, the sliding plate 2. The forementioned spring 6 is in the shape of a ring, with its two feet wide open to form an extraordinarily shaped spring, having its ringed body housed into the protrusive lug 21 which is located at the upper position of the sliding plate 2, while each of the wide-open feet of the spring presses against and buckled into the two protrusive lugs 12 13 of the base plate. The spring, by means of its springing force, will press the sliding plate 2 backward to resume its original position (as shown by FIG. 3A-A) after the Play Key of the sliding plate 2 has been released.

The tape-pressing wheel 3 which is located at the lower right side of the sliding plate 2 is being fixed to position by passing an axle 31 on the sliding plate 2 through the belt-pressing wheel 3, and the position of the forementioned axle 31 has been fixed to the extent that the pressure exerted by the tape-pressing wheel 3 onto the music tape is tolerable without damaging the music tape because of exerting too heavy a pressure.

Therefore, it will save the peripheral supplementary fittings which are required for the fabrication of conventional tape-pressing wheels. (as shown by FIG 3A-B) The sound silencing magnetic head 4which is located at the lower left side of the sliding plate 2 is having two round holes 41 42 at its base. of which one round hole 41 is directly buckled to the protrusive lug 25 on the sliding plate 2, while another round hole 42 is tightly positioned to the sliding plate 2 by a screw 43, so as to save assembly working hours and cut down the cost of materials. (as shown by FIG.3B) The positioning spring pin 14 located at the base plate 1 as shown by FIG. 3C is directly buckled to and in between the two positioning blocks 15 by an extraordinarily shaped spring to cope with the two dampers 16 to be positioned at the base plate 1 to save such intricate work as screwing, so as to cut down the costs of production and assembling.

As shown by FIG. 4, the plane of the better embodiment of this invention comprises of the reversedside structure of the disk of the machine, composing of a flying wheel assembly 8, toothed convex wheel 9, electromagnetic switch 94, gearing assembly. magnet-sensing switch 10 and other main components. By referring to FIG. 5A, it can be seen that there is a flying wheel assembly 8 which is being assembled by a flying wheel iron plate 81 and a resin flying wheel, by means of passing the four protrusive lugs 821 on the resin flying wheel 82 through the four round holes 811 located at the flying wheel iron plate 81.Then, by means of heating, flatten the four resin protrusive lugs by pressure, so as to achieve its objective of buckling, as well as to facilitate a simple assembly process and to save the working hour required.

The magnet-sensing switch 10 is designed to cope with the magnetism spreaded by the magnetic iron set 70 at the lower layer of the tape rotating axle 7 to control the magnet-sensing switch 10 (as shown by FIG. dub), at the time when the tape rotating axle 7 is in operation, not to start its operation by means of the variance of the magnetism of the magnetic pole. When the tape rotating axle 7 stopped its operation, the magnetism of the magnetic pole will not produce any variance and, therefore. will cause the magnet-sensing switch 10 to start operation, so as to achieve the objective of automatically stopping the motions of PLAY, FF, REW, etc., conducted by the forementioned sliding plate 2.

The toothed convexed wheel 9 is designed to cope with the wearing assembly and motional procedures of the electro-megnetic switch 94 as shown by FIG. 6, wherein the toothed convex wheel 9 is made in the form of a semi-ringed tooth wheel having three stopping block 91 92 93 set at its surface; a magnetic lever 95 is set on the electro-magnetic switch 94 to drive a sliding rod 96 in order to control the engaging and disengaging motions of the toothed convex wheel 9 and the toothed flying wheel 83 located at the lower layer of the flying wheel, so that, at the time when PLAY is being pressed on, the toothed convex wheel 9 will drive the sliding plate 2 to the motional position where sound recording and releasing are effected.

When the electro-magnetic switch 94 is being electrified, the magnetic rod 95 will be caused to produce a shrinkage motion which will immediately cut off the electric current so as to resume the magnetic rod 95 to its original position. At the time when the magnetic rod 95 is being shrinked, it will cause the sliding rod 96 to rotate, which will drive the extreme end of the sliding rod 96 to move from its original location at the stopping block toward the slanting-shaped block at the tail part of the stopping block 92.A slight push at thia tim# will @ause th inter-@ng@g@ment #?L the toothed convex wheel 9 and the toothed flying wheel 83 (as shown by FIG. 6 A). Then, by means of the rotation of the flying wheel 8, drive the toothed convex wheel 9 to rotate,, to such an extent that, when it is rotating to the spot where no tooth is found, the extreme end of the sliding rod 96 will coincidentally be squeezed onto the stopping block 91 (as shown by FIG. 6B). The toothed convex wheel 9, at this time. will push the sliding plate 2 to the section where the key of PLAY is located (for sound recording/releasing), while the tape-pressing wheel 3 will pressed onto the tape.

When the electro-magnetic switch 94 is being electrified again, the magnetic rod 95 will also shrink again. At the same time, the extreme end of the sliding rod 96 will slide from the stopping block 91 to the levelshaped block at the top of the stopping block and, by means of the distance which existed between stopping blocks 91 and 92, the tape-pressing wheel 3 located at the sliding plate 2 will be caused to move away from the sound recording/releasing tape. At this time, the sliding plate 2 is ón the stage of rapidly moving forward (FF) or rapidly moving backward CREW)1 so that the lengthening of the durability of the tape can be achieved (as shown by FIG. 6C).

At the same time when the sound recording/ releasing tape is being stopped, the tape rotating axle 7 will also stop and, the magnetic iron 70 located at its lower layer will be in accord with the tape revolving axle to remain in a standstill state without producing any changes, which will cause the magnet-sensing switch to activate, so as to terminate the electro-magnetic switch 94 from being electrified and cause the magnetic rod 95 to expand from its original state of shrinkage and, consequently, resulting in driving the sliding rod 96 to move, so as to cause the extreme end of the sliding rod 96 to pass along the exterior lateral side of the stopping block 92 until it reached and engaged by the stopping block 93.At this time, the toothed convex wheel 9 will move away from the toothed flying wheel 83, while the sliding plate 2 will be release from PLAY and be pressed backward by the position-resuming spring 6, i.e. the sliding plate will then be on a STOP state.

Summarizing the above description, this invention is characterized for the following features: (1) Using simplified mechanical parts for the most amazing arrangement to present a simpler and easier operation: (2) By means of an improvement of a simplied structural assemble to facilitate a material and working hour saving fabrication; and (3) Ensuring the saving of working hour the reducing of mechanical breakdown and the cutting down of production cost at the time of mass production.

Therefore, the assembly of the improved structure of this invention is featured for its new idea and practical use, particularly so in the driving assembly of the toothed convex wheel in accord with the electro-magnetic switch.

Claims

CLAIMS:

1. A structure for a telephone answer-back/ recording machine. comprising: a base plate having a generally rectangular shape and being provided with reinforcing means in the form nf indentations in the plate adjacent corners of the plate: a sliding plate slidably mounted upon said base plate: a position resuming spring arranged at one end of the sliding plate, said spring having a circular shaped center portion and a pair of integral arms extending therefrom, said arms being spread wide apart:: said circular-shaped portion being mounted upon a lug integrally formed and extending upwardly from said sliding plate; said base plate having a pair of integral lugs extending upwardly from said base plate; each of said spring arms each engaging an associated one of said pair of lugs for normally urging the center portion of said spring and hence said sliding plate in a direction toward said lugs: said spring arms slidably engaging said associated lugs and being urged toward one another when said sliding plate is moved away from said pair of lugs.

2. The structure of Claim 1 further comprising a magnetic erase head including a housing having two mounting holes: one of said mounting holes received an integral mounting lug projecting upwardly from said sliding plate; a screw extending through the remaining mounting hole and threadedly engaging a hole provided in said sliding plate.

3. The structure of Claim 2 wherein said mounting lug has a free end thereof extending upwardly from a pair of shoulders formed on said mounting lug; said free end being force fitted into the associated mounting hole in said magnetic head housing; the portion of said housing adjacent the opening receiving said mounting lug resting upon said shoulders.

4. The structure of Claim 3 wherein the opening in said sliding plate threadedly engaged by said screw is provided in the bent over end of an upwardly extending projection forming an integral part of said sliding plate, the portion of said magnetic head housing surrounding the opening receiving said screw resting upon said bent-over end.

5. The structure of Claim 1 further comprising a positioning spring having a pair of arms held in position upon said base plate by a pair of integral mounting projections cooperating with the base plate form recesses, each recess receiving one arm of said spring; said arms of said positioning spring being normally urged apart, said recesses engaging said arms so that said arms remain locked in said recesses under the spring force normally urging the arms of said positioning springs apart.

6. The structure of Claim 5 further comprising a pair of damping projections each being at spaced intervals from an associated one of said of first pair of projections: the free ends of spring arms being bent to engage said damper projections when said spring moves toward said dampers.

7. The structure of Claim 6 wherein said damping projections are defined by L-shaped arms co- operating with said base plate to form recesses for receiving the associated end portions of said positioning spring arms.

The structure of Claim 1 further comprising a tape rotating axle arranged on said base plate: a magnetic member mounted for rotation on said axle; a magnet sensing switch positioned adjacent said magnetic member for decoupling the power supply when the axle is in one of its two possible states, i.e. rotating or motionless, and for recoupling the power supply when the axle is in the remaining one of its two possible states.

9. The structure of Claim 1 further comprising a tape-pressing wheel mounted upon a sleeve; an axle extending through said hollow sleeve for rotatably supporting said tape-pressing wheel.

10. The structure of Claim 9 wherein said sleeve is joined to said sliding plate at position-to exert proper pressure upon a magnetic tape engaging the pressing wheel.

11. The structure of Claim 1 further comprising a flywheel assembly rotatably mounted upon said base plate, said flywheel assembly comprising a metallic plate and a plastic flywheel; said-plastic flywheel having a plurality of integral projections: said metallic plate having a plurality of openings each adapted to receive one of said projections; said plate and said flywheel being joined to one another by flattening the free ends of said projections through the application of heat and pressure to form an enlarged head portion at the free end of each said projections to secure said metallic plate to said plastic flywheel.

12. The structure of Claim 1 further comprising a wheel mechanism having a semi-ciruclar toothed wheel portion for selective engagement with a toothed flywheel rotatably mounted upon said stationary plate; said convex wheel having first, second and third stopping blocks arranged at spaced intervals on one face of the toothed wheel to control the motion of the sliding plate; an electromagnetic switch having a reciprocating rod arranged to move in a first direction when the electromagnetic switch is energized and arranged to move in e second direction when the electromagnetic switch is deenergized; a sliding rod driven by said reciprocating rod for selective engagement with said stopping blocks; ; said sliding rod being driven in a first direction by said rod when said electromagnetic switch is energized to cause the interengagement of the toothed wheel with the toothed flywheel.

13. The structure of Claim 12 wherein the toothed wheel is mounted to said sliding plate by means which cause linear movement of the sliding plate due to rotational movement of the toothed wheel.

14. The structure of Claim 13 wherein the energization of said electromagnetic switch causes the sliding rod to drive the toothed wheel to cause interengagement of the toothed wheel and the toothed flywheel to provide automatic sound recording/ releasing of the answer back/recording machine.