Classifications

• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
  • G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
  • G11B33/027—Covers
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
  • G11B15/675—Guiding containers, e.g. loading, ejecting cassettes
• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
  • G11B15/675—Guiding containers, e.g. loading, ejecting cassettes
  • G11B15/67544—Guiding containers, e.g. loading, ejecting cassettes with movement of the cassette parallel to its main side and subsequent movement perpendicular thereto, i.e. front loading
  • G11B15/67547—Guiding containers, e.g. loading, ejecting cassettes with movement of the cassette parallel to its main side and subsequent movement perpendicular thereto, i.e. front loading the two movements being made by the cassette holder

Definitions

• the present invention relates to a device for locking a front door of a tape recorder, and more particularly, to a device for locking a front door of a tape recorder such that the front door does not open when one tries to open the front door with a hand or stick and the front door opens when a tape cassette is inserted into the tape recorder
• a front door is pivotably installed at the front surface thereof to open and close
• the tape cassette is received in a cassette holder in a housing of the tape recorder
• a built-in sensor of the housing detects the tape cassette and operate a loading motor, and a loading mechanism places the tape cassette on a reel table inside the housing by moving the cassette holder
• a front door 10 is installed at the front side of a housing (not shown) of the tape recorder and pivots with respect to a pivot shaft 10a
• An opening lever 20 for opening the front door 10 is pivotably installed to the side and rear of the front door 10
• An opening pin 20a of the opening lever 20 is positioned against a hooking piece 10b of the front door 10
• the front door 10 is closed by being biased by an elastic means (not shown) when the tape recoider is operating or power is off
• a locking lever 30 is pivotably installed to the side and rear portion of the front door 10 and selectively ⁇ e ⁇ ents the f iont dooi 10 tiom pivoting ⁇ locking piece 32 protrudes tiom an end portion of the locking lever 30 and prevents the front door 10 from opening Further, an interlocking portion 37 is formed at the locking lever 30 and is interlocked with the opening lever 20 when the front door 10 is open.
• a loading arm 35 for loading or ejecting the tape cassette into or from the tape recorder while being rotated by a driving motor (not shown) is installed to the rear of the front door 10.
• the front door 10 Before the tape cassette is inserted into the tape recorder including a front door locking device structured as above, the front door 10 is closed as shown in FIG. 2 and a supporting portion 33 of the locking lever 30 is supported by the loading arm 35 such that the locking piece 32 is raised.
• the tape cassette is safely placed on a cassette holder (not shown).
• a loading arm driving motor (not shown) is operated and the loading arm 35 is rotated clockwise.
• the loading arm 35 rotates, a guide pin 5 of the cassette holder coupled with the loading arm 35 is moved along a guide slot 6 so that the tape cassette received on the cassette holder is safely placed on a reel table (not shown).
• the locking piece 32 of the locking lever 30 when the tape cassette is completely received in the tape recorder, the locking piece 32 of the locking lever 30 is positioned adjacent to the rear of the front door 10 by being lowered by the weight of itself. As a result, the opening of the front door 10 using the external force can be prevented by the locking piece 32.
• the degree to which the locking lever 30 is lowered can be appropriately adjusted according to the position of the stopper 40.
• the guide pin 5 of the cassette holder is moved toward the front door 10 as the loading arm 35 rotates counterclockwise At this time, an end portion 35a of the loading arm 35 slides in contact with an interlocking portion 20b of the opening lever 20 so that the opening lever 20 is raised while rotating clockwise As the opening lever 20 rotates, the opening pin 20a comes in contact with the hooking piece 10b of the front door 10 Accordingly, the front door 10 pivots around the pivot shaft 10a and thus begins lo open. ⁇ t this time, the opening lever 20 slides in contact with the interlocking portion 37 of the locking lever 30 to lift the locking lever 30 Thus, when the rotation of the loading arm 35 is completed, the front door 10 is fully open, as shown in FIG. 4, and the tape cassette is ejected
• the front door is closed only after the tape cassette is loaded in the tape recorder. That is, no means for locking the front door when a tape cassette is not loaded is provided.
• the front door can be opened with a finger or stick when a tape cassette is not loaded in the tape recorder, which may cause damage to the tape recorder or injure a finger
• a device for locking a front door of a tape recorder including a front door pivotably installed at the front surface of the tape recorder and a locking unit for locking the front door, in which the locking unit comprises. a pushing member installed in the front door so as to protrude to the front of the front door and be pushed in contact with a tape cassette being inserted, a first locking unit installed inside a housing of the tape recorder for locking the front door, releasing the locking of the front door by interlocking with the pushing member when the tape cassette is inserted, and releasing the locking of the front door by interlocking with the tape cassette when the tape cassette is ejected. and a second locking unit installed inside the housing foi locking the front door by interlocking with the tape cassette only when the tape cassette is loaded in the housing
• the first locking unit comprises a first locking lever pivotably coupled with the housing and having an interlocking portion which interlocks with the pushing member and a locking portion which is positioned to the rear of the front door to prevent pivoting of the front door, and as the pushing member retreats by the inserted tape cassette, the interlocking portion interlocks with the pushing member and simultaneously the locking portion is lowered so that the front door is unlocked.
• the second locking unit comprises a second locking lever pivotably coupled inside the housing and having a contact piece formed on one end portion thereof which interlocks with the loaded tape cassette, and when the tape cassette is loaded, the contact piece contacts the bottom surface of the tape cassette and is lowered, and simultaneously, the other end portion of the second locking lever is lifted to be positioned to the rear of the front door so that the front door is locked.
• a device for locking a front door of a tape recorder including a front door pivotably installed at the front surface of the tape recorder and a locking unit for locking the front door
• the locking unit comprises: a pushing member installed in the front door so as lo protrude to the front of the front door and be pushed in contact with a tape cassette being inserted; a locking member installed inside a housing of the tape recorder for locking the front door by being elastically biased by a first spring, and releasing the locking of the front door by interlocking with the pushing member when the tape cassette is inserted; and a lock releasing member for releasing the locking of the front door by moving the pushing member not to be at the rear side of the front door by being elastically biased by a second spring when said tape cassette is ejected.
• the pushing member comprises at least one coupling portion which is inserted into at least one coupling hole formed on the front door and an interlocking portion which interlocks with the locking member.
• the locking member preferably comprises: a first angled surface which interlocks with lower end portions of the reversely pivoting front door or the pushing member in order to release the locking of the front door after the tape cassette is inserted: and a second angled surface which interlocks with a protruding piece formed on the lock releasing member in order to release the locking of the front door when the tape cassette is ejected.
• the device for locking a front door of a tape recorder further comprises a locking rib which inserts into a locking groove formed on the lock releasing member to support the lock releasing member after the tape cassette is inserted and escapes from the locking groove to allow the lock releasing member to be elastically biased toward the locking member by the second spring when the tape cassette is ejected
• a device for locking a front door of a tape recorder including a front door pivotably installed at the front surface of the tape recorder and a locking unit for locking the front door, in which the locking unit comprises a locking member installed at both ends of the front door to be elastically biased toward the front door by a spring and having a groove into which both ends of the front door is inserted, a first angled surface pushed by the inserted tape cassette such that the front door escapes from the groove, and a second angled surface formed opposite the first angled surface with respect to the groove; and a lock releasing unit having a protruding piece which pushes in contact with the second angled surface to allow the front door to escape from the groove when the tape cassette is ejected.
• FIG. 1 is a perspective view illustrating a portion of a device for locking a front door of a conventional tape recorder
• FIG 2 is a sectional view schematically showing the tape recorder employing the device for locking a front door shown in FIG 1 before a tape cassette is loaded;
• FIG 3 is a sectional view schematically showing the tape recorder employing the device for locking a front door shown in FIG 1 after a tape cassette is loaded.
• FIG 4 is a sectional view schematically showing the tape recordei employing the device for locking a front door shown in FIG 1 when a tape cassette is ejected,
• FIG 5 is a plan view schematically showing a device for locking a front door of a tape recorder according to a first embodiment of the present invention
• FIG 6 is a sectional view schematically showing the device for locking a front door viewed from the perspective of symbol M of FIG 5
• FIG 7 is a sectional view taken along VII- VII of FIG 5
• FIG 8 is a sectional view taken along VIII-VIII of FIG 5
• FIG 9 is a sectional view schematically showing the device for locking a front door viewed from the perspective of symbol N of FIG 5
• FIG 10 is a plan view schematically illustrating the device for locking a front door of a tape recorder employing two first locking units according to the present invention
• FIG 11 is a front view schematically showing a portion of the device for locking a front door of a tape recorder shown in FIG 10
• FIG 12 is a front view schematically showing a portion of the device for locking a front door of a tape recorder according to a second embodiment of the present invention
• FIG 13 is a plan view schematically showing a portion of the device for locking a front door of a tape recorder shown in FIG 12,
• FIG 14 is a plan view schematically showing the device for locking a front door of a tape recorder in which a first locking unit and a second locking unit are installed on a frame according to the present invention
• FIG 15 is a sectional view showing a portion of a device for locking a front door of a tape recorder according to a third embodiment of the present invention
• FIG 16 is an exploded sectional view showing the front door and the pushing member of FIG 15,
• FIG 17 is a perspective view of the locking member shown in FIG 15,
• FIG 18 is a sectional view for showing the cooperation between the pushing member and the locking member of FIG 15
• FIG 19 is a sectional view for showing the cooperation between the fi nt door and the locking member of FIG 15,
• FIG 20 is a perspective view showing a portion of the tape recorder and the tape cassette employing two pushing members according to the present invention
• FIG 21 is a sectional view showing a portion of the device for locking a front door of a tape recorder according to a fourth embodiment of the present invention
• FIG 22 is an exploded sectional view of the front door and the pushing member of FIG 21 ,
• FIG 23 is a perspective view of a locking member shown in FIG 21
• FIG 24 is a view for showing the cooperation between the pushing member and the locking member of FIG 21
• FIG 25 is a perspective view showing a portion of a device for locking a front door of a tape recorder according to a fifth embodiment of the present invention
• FIG 26 is a plan view showing a portion of the fiont door and the locking member of FIG 25
• a device for locking a front door of a tape recorder includes a pushing member 150 installed in a front door 130, which is pivotably installed to the front portion of a housing 110 m a tape recorder, and pushed by a tape cassette 100 inserted into the housing 110, a first locking unit 170 installed in the housing 110 and which allows the front door 130 to open only when the tape cassette 100 is inserted into the housing 110, and a second locking unit 190 for preventing the opening of the front door 130 after the tape cassette 100 is loaded in the tape recorder
• the pushing member 150 protrudes from the front surface of the front dooi 130 and when the tape cassette 100 is inserted into the housing 110 through the front dooi 130, the pushing member 150 contacts the tape cassette 100 and is pushed by the tape cassette ahead of the front dooi 130
• the pushing membei 150 is integiallv formed with the fiont dooi 130 and elastically moves back and foi th with respect to the front door 130 as shown in FIG 1 1
• the first locking unit 170 has a first locking lever 160 which is pivotably coupled with a hinge shaft 137a of a first bracket 137
• the first locking lever 160 includes an interlocking portion 162 which is engaged in contact with an end portion of the pushing member 150, as shown in FIG 7, and a locking portion 164 which selectively locks the front door 130 by being in contact with a lower end portion of the front door 130, as shown in FIG 8
• the interlocking portion 162 and the locking portion 164 are integrally formed
• the locking portion 164 is elastically biased to be positioned to the rear of the front door 130 by a spring 165 coupled between the first bracket 137 and the first locking lever 160
• the locking portion 164 is positioned to the rear of the front door 130, before the tape cassette 100 (see FIG 6) is inserted into the housing 110, to prevent pivoting of the front door 130 When the tape cassette 100 is inserted into the housing 110. the locking portion 164 moves from the rear side of the front dooi
• the second locking unit 190 installed in the housing 1 10 locks the front door 130 to prevent pivot after the tape cassette 100 is inserted into the housing 110
• the second locking unit 190 has a second locking lever 180 which is pivotably coupled with a hinge shaft 139a of a second bracket
• the front door 130 is not allowed to open by the locking portion 164 of the first locking lever 160, as shown in FIGS 5 and 8
• the tape cassette 100 contacts and pushes the pushing member 150 as shown in FIGS 6 and 7
• the pushing member 150 contacts and pushes the interlocking portion 162 of the first locking lever 160 downward
• the first locking lever 160 pivots and the locking portion 164 which prevents the pivot of the front door 130 is lowered, so that the front door 130 begins to open
• the front door 130 opens while pivoting together with the pushing member 150
• the inserted tape cassette 100 is placed on a cassette holder (not shown) and loaded on a reel table 105 by a loading mechanism (not shown)
• the front door 130 returns to the initial position by an elastic means (not shown)
• the tape cassette 100 contact the contact piece 186 of the second locking lever 180 and pressed downward to pivot the second locking lever 180
• the end portion of the second locking lever 184 is lifted and accordingly positioned to the rear of the front door 130 so that the front door 130 is locked
• the tape cassette 100 When the tape cassette 100 is ejected, the tape cassette 100 is transferred toward the front door 130 by a driving mechanism (not shown) Here, since the tape cassette 100 is lifted upward from the reel table 105 (see FIG 6). the second locking lever 180 returns to the initial position by the spring 185 Also, as the tape cassette 100 is moved toward the front door 130, the interlocking portion 162 of the first locking lever 160 is pushed downward by the tape cassette 100 thereby releasing the locking of the front door 130 Then, the front door 130 opens by another driving mechamsm (not shown) and thus the tape cassette 100 is ejected from the housing 1 10
• the numbei of lu st locking units and second locking units can be appropriately adjusted That is. as shown in FIGS 10 and 1 1 1 two f ust locking units 170a and 170b installed at either ends of the front door 130 and one second locking unit 190 can be employed
• FIGS 12 and 13 A device for locking a front door of a tape recorder according to a second embodiment of the present invention is illustrated in FIGS 12 and 13.
• the first locking unit 170b' includes a first locking lever 160' installed to be capable of pivoting around a hinge shaft 137a' sideways with respect to the front door 130
• An interlocking portion 162' which interlocks with the pushing member 150 and a locking portion 164' for locking the front door 130 are formed on the first locking lever 160' which is elastically biased by a spring 165' installed to the side surface thereof
• the operation of the first locking unit having the above structui e is the same as that of the previously described embodiment, except that the lock of the front door 130 is released as the first locking lever 160' interlocks with the pushing member 150 and pivots sideways with respect to the front door 130
• the first locking unit 170 and the second locking unit 190 are installed on a frame 235 additionally installed inside the housing 110 That is, the first bracket 137 and the second bracket 180 with which the first locking lever 160 and e second locking lever 180 are respectively coupled are fixed to the frame 235
• FIGS 15 through 20 illustrate a device for locking a front door of a tape recorder according to a third embodiment of the present invention
• the device for locking a front door includes a pushing member 250 installed at a front door 230 which is pivotably installed to the front side of the housing 210 of the tape recorder and pushed by the inserted tape cassette 100.
• a locking member 300 positioned to the rear of the front door 230 to lock the same and interlocked with the pushing member 250.
• a lock releasing unit 350 for leleasing the locking of the locking member 300 when the tape cassette 100 is elected
• the front door 230 has a coupling hole 234 and elastic protrusions 255 at both sides of the coupling hole 234
• the pushing member 250 has a coupling portion 254 formed thereon and is combined with the front door 230 by coupling the coupling portion 254 with the coupling hole 234.
• the elastic protrusions 255 elastically biases the pushing member 250 to the front of the front door 230.
• the locking member 300 is positioned to the rear of the front door 230 and prevents opening of the front door 230 as it is elastically biased by the spring 260 installed at the lower end portion of the housing 210.
• the front door 230 can open as the locking member 300 is pressed downward by an interlocking portion 252 of the pushing member 250. It is preferred that the corner portion of the locking member 300 which contacts the interlocking portion 252 is chamfered round.
• a first angled surface 300a and a second angled surface 300b are formed on the locking member 300.
• the first angled surface 300a contacts lower end portions of the front door 230 or the pushing member 250 when the open front door 230 reversely pivots to return to the initial position, and the second angled surface 300b contacts a protruding piece 352 of the lock releasing unit 350 when the tape cassette 100 is ejected.
• the lock releasing unit 350 includes a lock releasing member 351 which moves toward the locking member 300 during the ejection of the tape cassette, a protruding piece 352 formed on the lock releasing member 351 and contacting the second angled surface 300b of the locking member 300, a spring 360 for elastically biasing the lock releasing member 351 toward the locking member 300. and a locking rib 370 which inserts into and out of a locking groove 356 formed on the lock releasing member 3 1.
• the front door 230 is not allowed to be open since the locking member 300 is positioned behind the front door 230 before the tape cassette 100 is inserted into the housing 210 of the tape recorder.
• the tape cassette 100 contacts and pushes the pushing member 250. as shown in FIGS. 15 and 18.
• the interlocking portion 252 of the pushing member 250 contacts and pushes downward the locking member 300 so that the front door 230 is unlocked
• the pushing member 250 When the front door 230 is pushed by a foreign object 101 (see FIG 20) such as a finger or a stick, and not by a tape cassette, the pushing member 250 does not retreat so that the front door 230 is kept locked by the locking member 300 Thus, insertion of foreign object is prevented
• the front door 230 is open while pivoting around the hinge shaft 216 together with the pushing member 250
• the inserted tape cassette 100 is placed on a cassette holder (not shown) and loaded on a reel table (not shown) by a loading mechanism (not shown)
• the front door 230 reversely pivots by an elastic means (not shown) or by the weight thereof so as to return to the initial position
• the locking member 300 is pressed downward
• the front door 230 can return to the initial position without hindrance
• the locking member 300 is lifted again by the spring 260 to lock the front door 230
• the tape cassette 100 When the tape cassette 100 is ejected, the tape cassette 100 is transferred toward the front door 230 by a driving mechanism (not shown)
• a driving mechanism (not shown)
• the locking ⁇ b 370 escapes from the locking groove 356 of the lock releasing member
• FIGS. 21 through 24 A device for locking a front door of a tape recorder according to a fourth embodiment of the present invention is illustrated with reference to FIGS. 21 through 24.
• a pushing member 450 is elastically biased to the front of the front door 230 by an elastic piece 435. That is, as shown in FIG.
• a pair of coupling holes 434 is formed on the front door 230 and a coupling portion 454 formed on the pushing member 450 therein.
• the coupling portion 454 inserted into the coupling hole 434 is fixed, for example by welding, to the elastic piece 435 of which an end portion is attached to the rear surface of the front door 230.
• the locking member 500 includes a first angled surface 500a which contacts lower end portions of the front door 230 or the pushing member 500 when the open front door 230 reversely pivots to return to the initial position, a second angled surface 500b which contacts the protruding piece 352 of the lock releasing unit 351 when the tape cassette 100 is ejected, and a third angled surface 500c which contacts an interlocking portion 452 of the pushing member 450.
• the pushing member 450 retreats. Then, after the tape cassette 100 is inserted, the pushing member 450 returns to the initial position by the elastic piece 435.
• the operations of the device for locking a front door according to the insertion and ejection of the tape cassette 100 are the same as those described in the previous embodiments.
• the number of pushing members and locking members can be appropriately adjusted as in the above-mentioned embodiments.
• a device for locking a front door of a tape recorder includes a locking member 700 respectively installed at both ends of the front door 630.
• the locking member 700 as shown in FIG. 26. includes a first angled surface 700a formed to the front of the front door 630 and a second angled surface 700b formed to the rear of the front door 630.
• a groove 705 for selectively inserting either end of the front door 630 is formed between the first angled surface 700a and the second angled surface 700b.
• the locking member 700 is elastically supported by a spring 760 which is fixed to the housing 610 and the front door 630 is forced to be always inserted into the groove 705.
• the first angled surface 700a contacts the tape cassette 100 when the tape cassette 100 is inserted. Before the tape cassette 100 is inserted into the housing 610. the locking member 700 locks the front door 630 by fixing both ends of the front door 630, as shown in FIG. 26.
• both ends of the tape cassette 100 contact the first angled surface 700a and the locking member 700 is pushed sideways with respect to the front door 630 so that the locking is released.
• the front door 630 After the tape cassette 100 is loaded, the front door 630 returns to the initial position and the locking member 700 is biased to re-lock the front door 630.
• the protruding piece 352 see FIG.
• opening of the front door can be prevented before and after the tape cassette is inserted into the housing. Also, when a foreign object is inserted into the tape recorder, the front door is not open so that malfunction of die device or accidents occurring due to insertion of a finger and so forth can be prevented.

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Applications Claiming Priority (6)

Publications (1)

Family

ID=27349359

Family Applications (1)

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Cited By (1)

Citations (3)

• 1997
  • 1997-06-25 WO PCT/KR1997/000122 patent/WO1998000844A1/en active Application Filing
  • 1997-06-26 MY MYPI9702891 patent/MY128053A/en unknown
  • 1997-06-26 IN IN1221CA1997 patent/IN190230B/en unknown
  • 1997-06-30 ID IDP972273A patent/ID17522A/id unknown

Patent Citations (3)

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