CN1052744A - The cassette door of band plastics spring - Google Patents
The cassette door of band plastics spring Download PDFInfo
- Publication number
- CN1052744A CN1052744A CN90110051.XA CN90110051A CN1052744A CN 1052744 A CN1052744 A CN 1052744A CN 90110051 A CN90110051 A CN 90110051A CN 1052744 A CN1052744 A CN 1052744A
- Authority
- CN
- China
- Prior art keywords
- door
- box body
- spring
- tape cassete
- plastics
- 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.)
- Pending
Links
- 239000004033 plastic Substances 0.000 title claims abstract description 33
- 229920003023 plastic Polymers 0.000 title claims abstract description 33
- 239000002991 molded plastic Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 14
- 239000004793 Polystyrene Substances 0.000 claims description 6
- 229920002223 polystyrene Polymers 0.000 claims description 6
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims description 4
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 claims description 4
- 238000001746 injection moulding Methods 0.000 claims 1
- 239000002184 metal Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 229920004943 Delrin® Polymers 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
- G11B23/04—Magazines; Cassettes for webs or filaments
- G11B23/08—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends
- G11B23/087—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends using two different reels or cores
- G11B23/08707—Details
- G11B23/08735—Covers
Landscapes
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
A kind of improved tape cassete 2 comprises that 4, one 16 of box bodys with open front 14 are pivotally mounted on it to move between the opening and closing position.The Men Weiyi molded plastic part, and preferably include a Unitarily molded with it plastics spring 32.The position of spring, shape and size match so that door is biased into its off-position from the open site its outer end 34 with box body.The spring plastics of handy spring property is made, and the remainder of door is made with a kind of plastics of structural property.This makes spring can have required elasticity, and the remainder of door has suitable structural behaviour.
Description
The present invention relates to tape cassete, particularly a kind of tape cassete with door of band plastics spring.
Common video cassette is made a box body that holds reel spindle and take-up spool.Tape twists on the reel spindle, and the outerface free end links to each other with take-up spool.Driving take-up spool makes tape be sent to take-up spool from reel spindle.The front end of box body is an opening, to be exposed to the tape that transmits between two axles.This makes the suitable parts of player, such as video reproduction and video recording head, drive belt wheel and idle pulley etc., can and contact with tape.
Avoid when making tape outside machine polluting, a movable door is installed in the open front of box body.Generally this door is pivotally mounted on the box body, it just can move between an off-position (closing open front) and an open site (differ nearly 90 ° with off-position, tape is exposed in open front) like this.
Door is pivotally mounted on the box body with the pair of pivot post.Jack-post extends internally from the door both sides usually, to match with the opening that appropriate size and position are arranged on the box body.A metal torsion spring is installed on the jack-post; Pivot (or other position on the door) restriction thus of one end of torsion spring, and the other end is pressed on the box body door is biased into its off-position.
Its door is by mistake opened in order to prevent outside tape cassete is in player, and traditional vhs video tape drum has a keeper.Keeper has the button (button) of a horizontal expansion in the side near door of box body.When tape cassete is in player, player be pressed in make on the button of keeper the biasing force that can resist the metal torsion spring from its off-position pivot about 90 ° to its open site.A kind of such keeper is shown in U.S. Patent No. 4,466,583 grades of Giannis, more than to its announcement of doing as a reference.
The purpose of this invention is to provide a kind of improved tape cassete, Men Youyi plastics spring wherein matches with box body the door bias voltage is closed.Spring is preferably integrally molded with door.
This improved tape cassete comprises a box body, and it has an open front, and its door is pivotably mounted on it, moves between the opening and closing position.Door preferably has the molded plastic parts of plastics spring, and spring also can be integrally molded with door.Spring can be J-shaped substantially, and its shape, size and position are suitable for matching with box body, so that the Men Congqi open site is biased into off-position.Plastics spring also can be installed on the box body or be integrally molded with it.
Improvements of the present invention are to recognize: the plastics spring made from the plastics of spring property can be used for replacing metal spring, even (typically being 90 °) also can close the door bias voltage of video cassette when door has than large moving range.
Although plastics spring can be with making with the door identical materials, the most handy material different with door made.This can make the spring apparatus have the material of required elastic performance to make, such as making (as DELRIN with acetal polymer
The acetal homopolymer resin), and other parts of door are made of plastic, such as making with polystyrene, to adapt with the required structural requirement of its purposes.But move general about 90 ° in the larger context with the spring biased door that the plastics with spring property are made.Although plastics spring has been used for various bolt-lock purposes in tape cassete, referring to Coy, the U.S. Patent No. 4,527,755 of the U.S. Patent No. 4,512,534 of Jr. etc. and Rood etc., their range of movement is all very limited.Come biased door although shown employing plastics spring pin in the patent of Rood, its range of movement is also limited, and its effect just biased door makes it standard-sized sheet or complete shut-down; This is opposite with the present invention, plastics spring of the present invention from door in the open site up to off-position opposite house bias effect always.
Although preferably that door spring is integrally molded with the other parts of door, spring and Men Ke are separately molded, use the method such as ultrasonic soldering to be fixed together then.The advantage that although the present invention does not have Unitarily molded spring in this respect to be had, and in others, such as cost and assemble easy aspect, than the traditional structure that adopts metal spring raising has been arranged.
Because do not need independently metal torsion spring, a major advantage of the present invention is to produce tape cassete with less expense.The present invention also makes assembling easily, the further like this cost that reduced.The reduction that realizes these costs does not need to reduce the architecture quality of the other parts of plastics spring or door because both all can be fit to they separately the plastics of purposes make.And, because usually the plastics (such as polystyrene or ABS) than structural property are expensive for the plastics (such as acetal polymer) of spring property, two kinds of materials of a kind of like this usefulness make the door cost will than all with the spring property plastics make cost low, even also be like this when such plastics have suitable structural property.
Other characteristics of the present invention and advantage can be found out from following explanation, wherein describe preferred embodiment in conjunction with the accompanying drawings in detail.
Fig. 1 is the skeleton view of video package of the present invention, and wherein part is exposed to show pivot.
Fig. 2 is the equal proportion zoomed-in view of first side of the door of Fig. 1, has shown to be thought of as the Unitarily molded plastics spring that separates with first pivot, with the display driver structure.
Fig. 3 is the cut-open view of door before being installed on the box body of Fig. 2.
Door and the cut-open view of box body of Fig. 4 A for cutting open along the 4A-4A line of Fig. 1, door is in the closed position.
Fig. 4 B has shown that door and the box body of Fig. 4 A are in the open site.
Referring to Fig. 1, shown video cassette 2 comprises a box body 4, and it has top 6, bottom 8 and both sides 10,12.Box body 4 has an open front 14, and door 16 is pivotably mounted on it.
Said structure generally is conventional.Conventional video cassette and the difference between the video cassette 2 are to have adopted monoblock type plastics spring 32, and this spring 32 extends from first pivot post 24 in better embodiment, and becomes the one component part.As shown in the figure, spring 32 is the Long Circle springs that are J-shaped.One end 34 of spring 32 is near first pivot 24, and the other end, promptly outer end 36 leans against the inboard 38(at box body 4 tops 6 referring to Fig. 4 A).
Fig. 3 is the cut-open view of door 16, has shown to be in the monoblock type plastics spring 32 that is not subjected to bias state.Please note that door 16 is not installed on the box body 4 among this figure.Door 16 off-positions that are among Fig. 1 that Fig. 4 A shows.In Fig. 4 B, can see that door 16 is installed on the box body 4 and is in the open site, has exposed open front 14.Can see that by comparison diagram 3,4A and 4B the outer end 36 of spring 32 is biased on the medial surface 38 at box body 4 tops 6.When door 16 was positioned at the open site of Fig. 4 B, when promptly becoming 90 ° approximately with the off-position of Fig. 4 A, the distortion of the bias voltage of spring 32 was maximum.Even door is in the off-position of Fig. 4 A, owing to be pressed against the acting force of the outer end 36 on the surface 38, spring 32 still continues door 16 bias voltages to off-position.
Although the plastics of one type of door 16 usefulness might be made, the required performance of the required performance of spring 32 and the remainder of door is different.If prepare spring 32 usefulness are made such as polystyrene, because the creep-resistant property of polystyrene is poor, in order to provide suitable uniform power in long-time, needed spring length just may be looked inadvisable like this.
Therefore, a crucial part of the present invention is that the material that Unitarily molded spring 32 usefulness of door 16 are different with the other parts of door is made.These the most handy two stage moulds and moulding press are finished.A kind of this class moulding press is sold by Sumitomo Heavy Industries Ltd's industry company limited of Tokyo, and new from Japan
Mitsubishi's metal company can obtain suitable mould.Adopt the method, except spring 32, the major part of door 16 adopts a kind of suitable material molded, makes such as polystyrene or ABS.The outer end of first pivot 24 makes irregularly shaped, to be fit to transmitting torsion, such as the cruciform of making as shown in Figure 2.Imagination ground separates spring 32 and pivot 24 to show that but a kind of between provides the possible molded shape of driving interface among Fig. 2.In this preferred embodiment, spring 32 and pivot 24 are not two parts that separate.After molded in this section the finishing, movably from then on the mould (not shown) recesses outer end 42 in the position.Then a new die (not shown) is positioned over 42 places, outer end.When the material that injects suitable spring property in new die, after injecting a kind of acetal, because the joint of the cruciform outer end 42 of spring 32 ends, 34 place's fluid acetal spring materials and pivot 24, spring 32 promptly constitutes one 3 with the remainder of door 16.Treat all fully coolings of these two kinds of materials, from mould, take out door 16, promptly finish this two stages molding process.
The special shape of spring 32 and end 42 in fact can adopt many other structures just as a kind of typical case.And pivot post 24 also can play a part of spring.
In the above two stages of Tao Luning molded in, injecting between the different injection molded material and some mold component will unloaded or changes, in order to replace this process, can be with other molding technique making of door 16 usefulness.For example, two kinds of plastics can be injected simultaneously the mould of the whole door of a single qualification 16, the spring type plastics are injected in the zone of qualification spring 32 of mould, and the structural type plastics inject the other parts of mould.By adopting suitable injection length and injection rate, two kinds of materials can and stop to flow in suitable place junction, have the door 16 of all-in-one-piece spring 32 with it to make.One of also can first molded two parts make Unitarily molded spring 32, such as first moulded springs 32, then spring 32 is taken out and puts into the suitable cavity of the mould of door 16 from its mould, will make the mobile plastics that form door 16 contact and be bonded to during with this mode with spring 32.
In some cases, wish door 16 and spring 32 are made parts separately, as shown in Figure 2, and then connect together, such as using ultrasonic bonding with proper method.Even now can be lost some advantages that Unitarily molded spring has, but can imagine and still have advantages that some surpass the common metal spring.
Preferably spring 32 becomes the part of door 16.Yet spring 32 also can be made for the part of box body 4, and at this moment its end 36 will be pressed on the door 16 rather than on the box body 4.
Do not depart from the theme of the present invention that limits in the accompanying Claim book, can carry out other modification or variation the foregoing description.
Claims (16)
1, a kind of improved tape cassete, it comprises that one holds the box body of magnetic tape core, and this box body has an open front, and door is installed in the open front of box body movingly to move between the opening and closing position, it is characterized in that:
The door and box body in one comprise a Unitarily molded plastics spring, the planform of spring with and box body in another match so that the Men Congqi open site is biased into its off-position.
2, improved tape cassete as claimed in claim 1 is characterized in that, described door comprises door is pivotally mounted to first and second pivot post on the box body.
3, improved tape cassete as claimed in claim 2 is characterized in that, described door comprises first and second sidepieces and first and second pivot post of extending from first and second sidepieces.
4, improved tape cassete as claimed in claim 2 is characterized in that, described door is one selected in above-mentioned door and the box body.
5, improved tape cassete as claimed in claim 4 is characterized in that, described spring extends from first pivot post.
6, improved tape cassete as claimed in claim 1 is characterized in that, described opening and closing position is two mutual rotatable 90 ° turned positions.
7, improved tape cassete as claimed in claim 1 is characterized in that, described spring is roughly J-shaped.
8, improved tape cassete as claimed in claim 1 is characterized in that, described spring is to use the material different with the remainder of one of above-mentioned selected door and box body to make.
9, improved tape cassete as claimed in claim 8 is characterized in that, described Men Weiyi two stage injection molding components.
10, improved tape cassete as claimed in claim 8 is characterized in that, described spring is made with acetal plastics, and other parts of door are made with polystyrene plastics.
11, a kind of tape cassete is characterized in that it comprises:
One has the molded plastics box body of an open front;
Be positioned at the magnetic tape core of box body;
One molded plastics door is pivotably mounted on the box body to pivot between the opening and closing position;
Door and one of box body comprise a part that a Unitarily molded plastics spring, the shape of spring make spring with and box body in another one match so that the Men Congqi open site is biased into its off-position; And
Spring uses the material different with the remainder of one of described door and box body to make.
12, a kind of tape cassete is characterized in that it comprises:
One has the box body of open front;
Be positioned at the magnetic tape core of box body;
One molded plastic door is pivotally secured on the box body pivoting between the opening and closing position, between the opening and closing position at least about 90 °;
One plastics spring extends from one of door and box body, the part that the shape of spring makes spring with and another of box body match so that door is biased into off-position from the open site; And
Spring uses the material different with the remainder of one of described door and box body to make.
13, tape cassete as claimed in claim 12 is characterized in that, described spring and one of described door and box body are Unitarily molded.
14, tape cassete as claimed in claim 13 is characterized in that, one of described door and box body refer to door.
15, tape cassete as claimed in claim 14 is characterized in that, described door is molded parts of multistage.
16, tape cassete as claimed in claim 14 is characterized in that, described door comprises door is pivotally mounted to first and second pivot post on the box body; And
Described spring is coiled and is extended integrally with it around first pivot post at least in part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US45342889A | 1989-12-19 | 1989-12-19 | |
| US07/453,428 | 1989-12-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1052744A true CN1052744A (en) | 1991-07-03 |
Family
ID=23800545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN90110051.XA Pending CN1052744A (en) | 1989-12-19 | 1990-12-18 | The cassette door of band plastics spring |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN1052744A (en) |
| AU (1) | AU7161191A (en) |
| MY (1) | MY104603A (en) |
| WO (1) | WO1991009401A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5544834A (en) * | 1990-11-19 | 1996-08-13 | Wti International Corporation | Video tape cassette |
| US6302344B1 (en) | 1999-07-01 | 2001-10-16 | Chen K. Su | Lightweight video cassette |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4466583A (en) * | 1982-08-12 | 1984-08-21 | T/B & H Home Video | Cassette door latch |
| US4608616A (en) * | 1982-12-08 | 1986-08-26 | Victor Company Of Japan, Ltd. | Tape cassette having a lock mechanism for locking a tape protecting lid |
| US4527755A (en) * | 1983-10-17 | 1985-07-09 | Minnesota Mining And Manufacturing Company | Hinged visor-type door for tape cassette |
| US4744530A (en) * | 1986-09-12 | 1988-05-17 | Minnesota Mining And Manufacturing Company | Cartridge door-latching mechanism |
-
1990
- 1990-12-14 WO PCT/US1990/007467 patent/WO1991009401A1/en unknown
- 1990-12-14 AU AU71611/91A patent/AU7161191A/en not_active Abandoned
- 1990-12-17 MY MYPI90002192A patent/MY104603A/en unknown
- 1990-12-18 CN CN90110051.XA patent/CN1052744A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| AU7161191A (en) | 1991-07-18 |
| MY104603A (en) | 1994-04-30 |
| WO1991009401A1 (en) | 1991-06-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |