CN1003477B - Tape recorder - Google Patents
Tape recorder Download PDFInfo
- Publication number
- CN1003477B CN1003477B CN87103109.4A CN87103109A CN1003477B CN 1003477 B CN1003477 B CN 1003477B CN 87103109 A CN87103109 A CN 87103109A CN 1003477 B CN1003477 B CN 1003477B
- Authority
- CN
- China
- Prior art keywords
- blattnerphone
- metal
- synthetic resin
- wheel shaft
- mentioned
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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- Elimination Of Static Electricity (AREA)
Abstract
The present invention relates to a tape recorder which is characterized in that the present invention is formed by the method that a base plate of the tape recorder is formed by combining synthetic resin with electric conductive metal, bearing metal is arranged on the synthetic resin part of the base plate of the tape recorder, and a main guide wheel shaft is supported by the bearing metal. Simultaneously, the bearing metal is pressed in a supporting plate hole formed by the electric conductive metal; the supporting plate is fixed on the electric conductive metal part of the base plate of the tape recorder.
Description
The present invention is about desiring the blattnerphone that is combined to form the blattnerphone substrate by synthetic resin and conductive metal.
In the past, the substrate of blattnerphone was that conductive metal with iron plate etc. forms.But once attempted forming the some of blattnerphone substrate recently with synthetic resin.Therefore, can make complex-shaped most parts partly easy integrally formed what synthetic resin is installed partly, thereby can seek to reduce manufacturing cost.
Form the some of blattnerphone substrate with synthetic resin, fixedly during this synthetic resin part of what, leading wheel shaft can form electric insulating state with the bearing metal of the leading wheel shaft of supporting.Therefore, when leading wheel shaft high speed rotating since between the bearing metal of leading wheel shaft and this leading wheel shaft of supporting because of contacting the electrostatic influence that takes place, exist tape to be wound on leading wheel shaft, or the problem of generation electrostatic noise.
Therefore, be fixed in blattnerphone substrate synthetic resin blattnerphone partly, must on above-mentioned bearing metal, assemble ground wire especially at the bearing metal that will support leading wheel shaft.For this reason, having increases manufacturing process and raises the cost, and a part ofly makes the weakened problem of the benefit that obtains with synthetic resin thereby make.
And aspect thermotolerance, physical strength, synthetic resin is inferior than metal, therefore exists the distortion because of synthetic resin to make leading wheel shaft produce, and reduces blattnerphone performance part.
Therefore, the object of the present invention is to provide a kind of, a part of blattnerphone substrate can be utilized synthetic resin make with the facilitation seeking to make with reduce cost, under the situation of not causing structure complicated, the bearing metal of the leading wheel shaft of supporting can be connected with ground wire simultaneously, and can prevent the blattnerphone that leading wheel shaft tilts really.
Can provide a kind of according to the present invention, by the combination of synthetic resin and conductive metal and form the blattnerphone substrate, metal bearing is installed on the synthetic resin part of above-mentioned blattnerphone substrate, utilize the leading wheel shaft of this metal bearing supporting, simultaneously above-mentioned metal bearing is pressed in the supporting plate hole that forms with conductive metal, above-mentioned support plate is fixed in the blattnerphone that the conductive metal of above-mentioned blattnerphone substrate partly forms.
Can bring into play function and the due function of ground wire that supports metal bearing with the support plate that above-mentioned conductive metal forms.
Now explanation is relevant to be applicable to that with the present invention an embodiment of cassette tape recorder is as follows.
The 1st figure is the back view of expression blattnerphone structural portion, and the 2nd figure is the front view (FV) of expression isostructure portion.In these figure, 1 is the blattnerphone substrate, on this blattnerphone substrate 1, be equipped with, a pair of spool 3a, the 3b of tape cassete 2 pack into, with selection mode with the revolving force of motor 4 transfer to the gear of said reel 3a, 3b or belt pulley etc. rotation transmission part 5a, 5b, 5c ... the magnetic head installation component 8 free to advance or retreat of magnetic head 6 and eraser 7 is installed, the metal bearing 10(of the leading wheel shaft 9 of supporting consults the 4th figure), the rotation revolving member 12 freely of supporting pinch roller 11 etc. Many control member 13a, 13b, the 13c that will select various types to use again in mode free to advance or retreat ..., be installed on the following exterior region of blattnerphone substrate 1.In addition, 9a is fixed in the flywheel of leading wheel shaft 9 lower ends for expression.
As the 3rd figure also represented, blattnerphone substrate 1 was by plastic master priming portion 14, with the front braced chassis portion 15 of sheet metal system, with back braced chassis portion 16 grades three partly institute become.
Front braced chassis portion 15 utilizes bolt exterior region below master priming portion 14.And for example shown in the 3rd figure that sees from a following side, the 1st figure consults with its both side edges portion 19,20(in back braced chassis portion 16) be entrenched in the recess 17 that is formed at hinder marginal part both sides below the master priming portion 14, hook-type joint portion 18, and the hole shape joint portion 21,22 that jut 23,24 is inserted trailing edge central portions below the master priming portions 14, by bolt in above-mentioned master priming portion 14.
On the necessary position of master priming portion 14, be equipped with respectively, go into and the fixing cylindrical recess 25 of aforementioned bearings metal 10 usefulness from a following side pressure, the axial region 26 of supporting revolving member 12 usefulness that pivot, for guide magnetic head installation component guide portion 27a, 27b, the 27c of magnetic head installation component 8 usefulness free to advance or retreatly, be position limit body 28a, 28b, 28c, the 28d of tape cassete 2 location usefulness, though and in the drawings other various parts of abridged installation portion and set up spring so that the spring joint portion of the part desire trend certain orientation of installing etc.
Aforementioned front braced chassis portion 15 can strengthen master priming portion 14, also have simultaneously can prevent aforementioned operation member 13a, 13b, 13c ... the anti-drop function that breaks away from from master priming portion 14.In addition, directly or by suitable member, aforementioned rotation transmission part 5a, 5b, 5c etc. can be installed on aforementioned back braced chassis portion 16, and this on 16 the carriage 37 by sheet metal system aforementioned motor 4 also is housed.
In the rear side of blattnerphone substrate 1, the support plate 38 that forms with the conductive metal plate strides across master priming portion 14, utilizes bolt 39a, 39b, 39c to be installed in the braced chassis portion 15,16 of front and back.In the above-mentioned bolt, especially bolt 39a is incorporated into jut 24 above aforementioned hole shape joint portion 22, and also has the function that connects master priming portion 14 and back braced chassis portion 16.Shown in the 3rd figure and the 4th figure, be equipped with at above-mentioned support plate 38, be pressed into the hole 40 of aforementioned bearings metal 10, and be pressed into bearing metal 10 easily continuously 40 slit 41a, 41b in the hole are housed because of making.
Above-mentioned formation can obtain following effect.
That is, leading wheel shaft 9, magnetic head installation component 8, control member 13a, 13b, 13c ... though belong to synthetic resin Deng to installation accuracy requirement height but because the master priming portion 14 of these members is installed, therefore can use the feature of synthetic resin, the cylindrical recess 25 that bearing metal is used will be installed, and magnetic head installation component guide portion 27a, 27b, 27c etc. are integrally formed.So, high-precision metal pattern just can be with cylindrical recess 25 by being prepared in advance, the mutual alignment relation of magnetic head installation component guide portion 27a, 27b, 27c etc. forms high precision easily, and then can improve leading wheel shaft 9, magnetic head installation component 8, the installation precision of control member 13a, 13b, 13c etc.For weakness on the intensity that belongs to synthetic resin chassis shortcoming and yielding point, can be respectively be eliminated by the exterior region of metal front braced chassis portion 15,16 reinforcement master priming portions 14 of back braced chassis portion and hinder marginal part again.And, front braced chassis 15 except that can bring into play add also can bring into play the powerful prevent control member 13a, 13b, 13c ... the anti-drop function and spool 3a, the 3b that throw off, rotation transmission part 5a, 5b, 5c ... Deng the maintenance function, therefore can seek the simplification of structure and the reduction of manufacturing expenses.
And, because the conductive metal of blattnerphone substrate 1 front and back braced chassis portion 15,16 partly mechanically reaches electric means by support plate 38 and is connected with bearing metal 10, therefore can prevent because of dominating wheel shaft 9 and contact the static that causes with bearing metal 10, as a result, the tape that causes because of generation static be can prevent and leading wheel shaft 9 or electrostatic noise snarled.
In addition, because support plate 38 is for being fixed in braced chassis portion 15,16, bearing metal 10 is pressed in the hole 40 of above-mentioned support plate 38, therefore, also can prevent the generation of inclination here by support plate 38 even thermotolerance, the mechanical displacement because of the master priming portion 14 that forms with synthetic resin tilted bearing metal 10 desires.Therefore, can prevent the thing that tilts to reduce the performance such as producing because of leading wheel shaft 9.And, because support plate 38 strides across the braced chassis portion 15,16 that front and back are fixed in master priming portion 14, therefore also become combination member in conjunction with three chassis portions, can strengthen the bond strength of three chassis portions.
As mentioned above, the present invention can be accurately and is made easily and cheap, but and can save therefore simplified structure of ground wire, add the inclination that also can prevent to dominate wheel shaft.
The simple declaration of accompanying drawing:
Accompanying drawing is represented one embodiment of the invention, and the 1st figure is the back view of blattnerphone structural portion, and the 2nd figure is the front view (FV) of isostructure portion, and the 3rd figure is an exploded perspective view for the treatment of as structural portion from norma basilaris, and the 4th figure is the sectional view of the leading wheel shaft support of expression.
1 ... the blattnerphone substrate, 9 ... leading wheel shaft, 10 ... bearing metal, 14 ... with the master priming portion of synthetic resin formation, 16 ... with the back braced chassis portion of conductive metal formation, 25 ... cylindrical recess, 38 ... support plate with conductive metal formation.
Claims (1)
1, a kind of blattnerphone, the substrate of this blattnerphone is to combine with synthetic resin and conducting metal, the metal bearing of the leading wheel shaft of supporting is set on the synthetic resin part of above-mentioned blattnerphone substrate, it is characterized in that above-mentioned blattnerphone also has a support plate that is formed by conducting metal, above-mentioned metal bearing is pressed in the above-mentioned supporting plate hole, and above-mentioned support plate is fixed on the conducting metal part of above-mentioned blattnerphone substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87103109.4A CN1003477B (en) | 1987-04-25 | 1987-04-25 | Tape recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87103109.4A CN1003477B (en) | 1987-04-25 | 1987-04-25 | Tape recorder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87103109A CN87103109A (en) | 1988-11-09 |
| CN1003477B true CN1003477B (en) | 1989-03-01 |
Family
ID=4814295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN87103109.4A Expired CN1003477B (en) | 1987-04-25 | 1987-04-25 | Tape recorder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1003477B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2342440Y (en) * | 1998-06-26 | 1999-10-06 | 李庆云 | Fly wheel bearing connector for recorder |
-
1987
- 1987-04-25 CN CN87103109.4A patent/CN1003477B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN87103109A (en) | 1988-11-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |