CN2045140U - Automatic reversal type magnetic tape drive - Google Patents
Automatic reversal type magnetic tape drive Download PDFInfo
- Publication number
- CN2045140U CN2045140U CN 88221304 CN88221304U CN2045140U CN 2045140 U CN2045140 U CN 2045140U CN 88221304 CN88221304 CN 88221304 CN 88221304 U CN88221304 U CN 88221304U CN 2045140 U CN2045140 U CN 2045140U
- Authority
- CN
- China
- Prior art keywords
- tape
- mentioned
- magnetic head
- installing plate
- feeding direction
- 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 - Lifetime
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- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Abstract
The utility model relates to an automatic reversal tape driving device, which is that a tape feed direction converting component is arranged at movable end position at both directions, an elastic maintenance mechanism which carries out elastic maintenance is arranged on a magnetic head mounting plate. When the magnetic head mounting plate moves forward, the position of the tape feed direction converting element is corrected by the aid of the elastic maintenance mechanism, and a replay action after swift feed is carried out according to the same tape feed direction after the swift feed.
Description
The utility model relates to a kind of automatic reversal tape driving device, this device is: the elasticity maintaining body that tape feeding direction bridgeware is carried out the elasticity maintenance on the mobile final position of both direction is installed on the magnetic head installing plate, when the magnetic head installing plate advances, by the position of this elasticity maintaining body correction tape feeding direction bridgeware, playback after sending to fast action can according to send to fast before identical tape feeding direction carry out.
As an example of on record automatic reversal tape driving device in the past, Fig. 4 introduces the spy and drives a drive of announcing on the clear 61-22416 communique.
The drive of Fig. 4 for seeing from the back side, it is paired separately capstan roller 1a, 1b in the both sides difference balanced configuration that is installed in the magnetic head 7 on the magnetic head installing plate 6, contact roller 2a, 2b, tape reel supporting member 3a, 3b, the revolution of each capstan roller 1a, 1b is passed to revolution transmission gear 4a, the 4b of corresponding tape reel supporting member 3a, 3b, and supporting with freely rotating and respectively turning round transmission gear 4a, 4b and making selectively and respectively turn round transmission gear 4a, 4b and be in gear support piece 5a, 5b in the middle of the revolution drive path.
On device, also be provided with that two gear support piece 5a, 5b and two contact roller 2a, 2b link respectively for making, can reciprocating freely tape feeding direction bridgeware 8.This tape feeding direction bridgeware 8 combines with the available conversion controls 9 that manually carries out rotating operation, utilizes torque spring 10 can make this conversion controls 9 and tape feeding direction bridgeware 8 carry out elasticity on one of mobile final position of both direction and keeps.In addition, also be provided with and can utilize manual control that magnetic head installing plate 6 is retreated, and make that tape sends to fast send controls 11 fast to.These parts 11, the effect by spring 12 often relies on a direction.Send controls 11 fast to and have interaction relation with magnetic head installing plate 6 by cooperating of cam hole 13 and cam pin 14, when the elastic force that overcomes spring 12, when pushing quick controls 11, magnetic head installing plate 6 retreats.
At above-mentioned each tape reel supporting member 3a, disposing on 3b and the rotation axis and have the pin of compressing 15a, the finger plate of 15b, it bears the turning power of each tape reel supporting member 3a, 3b by slipping mechanism (not expressing among the figure).And, tape reel supporting member 3a, 3b are in turning course, continue to compress cam follower lver 16a, the 16b that can rotate freely by respectively compressing pin 15a, 15b, the top of this cam follower lver 16a, 16b can with the offset cam 17a, the 17b sliding contact that are arranged on above-mentioned revolution transmission gear 4a, the 4b.Inboard at each offset cam 17a, 17b is provided with contact portion 18a, 18b, when tape supporting member 3a, 3b stop, and when leaving the top of cam follower lver 16a, 16b, contact portion 18a, 18b contact with the top of cam follower lver 16a, 16b, gear support piece 15a, 15b are rotated, revolution transmission gear 4a, 4b are moved towards the outside of the revolution drive path from capstan roller 1a, 1b to tape supporting member 3a, 3b.
19a, 19b are for applying the compacting part of snap-in force among the figure to contact portion 18a, 18b at the tape input end.
Therefore, for example shown in Figure 4, when the tape supporting member 3b revolution that makes counter-rotating one side, when resetting action, when tape is wound to terminal point, and during tape supporting member 3b stop motion, then interrelate therewith, gear support piece 5b promptly swings, overcome the elasticity confining force of above-mentioned torque spring 10, above-mentioned tape feeding direction bridgeware 8 is moved, and like this, the tape feeding direction promptly is converted.
Moreover, shown in figure, for example, tape is sent to reverse directions in one side, in the process of the action of simultaneously resetting, wish to be converted to when sending to fast, can overcome the acting force of spring 12, push and send controls 11 fast to.Like this, when pushing when sending controls 11 to fast, because the sliding contact of cam hole 13 and cam pin 14 retreats magnetic head installing plate 6, magnetic head 7 and contact roller 2b leave tape, tape can not be subjected to capstan roller 1b speed of gyration and limit, and can be wound onto apace on the tape reel of counter-rotating one side.
Like this, make tape fast on the tape reel of counter-rotating one side in the process of reeling, wishing the feeding direction of tape is converted to when advancing a side, can turn to " F " side from " R " side changing controls 9.When such operation, tape feeding direction bridgeware 8 moves to a direction, when the revolution transmission gear 4b that makes counter-rotating one side departs from revolution drive path from capstan roller 1b to tape reel supporting member 3b, the revolution transmission gear 4a of the side of advancing is entered among the revolution drive path from capstan roller 1a to tape reel supporting member 3a, therefore, the tape feeding direction is converted to the side of advancing.
In above such automatic reversal tape driving device in the past that constitutes, there is the not good problem of following maneuverability: tape one is sent to towards a direction, in the process that one side is reset, if want to make tape unroll after the fixed amount, listen to same local time again, must at first to handle in proper order and send operating parts 11 and conversion controls 9 fast to, with the tape fast rewind fixed amount, secondly, the manipulation transforms controls 9 again, after making the reinstatement of tape feeding direction, make and send controls 11 reinstatements fast to, begin the action of resetting again.
The purpose of this utility model provides following automatic reversal tape driving device: send to towards a direction at tape one, in the process that one side is reset, if want to make tape unroll after the fixed amount, listen to same local time again, can improve its maneuvering performance.
In the utility model, make tape feeding direction bridgeware on one of final position that both direction moves, carry out the elasticity maintaining body (20) that elasticity keeps being installed with on the magnetic head installing plate (6), two inclined-planes (23a), (23b) that are provided with joint portion (22) symmetrically and are attached thereto on tape feeding direction bridgeware (8) also are provided with combined (26) combining with the joint portion of tape feeding direction bridgeware on above-mentioned elasticity maintaining body.Like this, when the magnetic head installing plate is drawn back the position when moving from progressive position, combined is disconnected with combining of above-mentioned joint portion, when the magnetic head installing plate when the going-back position advanced position moves, above-mentioned combined and the sliding contact of above-mentioned inclined-plane are sent the position correction of tape feeding direction bridgeware to controls position before fast for manipulation is above-mentioned.
Send to towards a direction in the one side process of resetting making tape one, if want to make tape unroll given amount, listen to same place local time again, the tape installing plate is retreated after, handle and send controls fast to, make the conversion of tape feeding direction.Like this, when fast tape is unrolled after the fixed amount, when the magnetic head installing plate was advanced, the position of tape feeding direction conversion controls was modified to original state automatically, can according to send to fast before the action of resetting of identical tape feeding direction.
As following based on explanation that embodiment carried out, according to the utility model, can make tape feeding direction bridgeware on one of final position of both direction, carry out the elasticity maintaining body that elasticity keeps being equipped with on the magnetic head installing plate, on tape feeding direction bridgeware, be provided with the joint portion symmetrically and be attached thereto two inclined-planes that connect, on above-mentioned elasticity maintaining body, also be provided with the combined portion that combines with the joint portion of tape feeding direction bridgeware, when the magnetic head installing plate when the going-back position advanced position moves, above-mentioned combined and the sliding contact of above-mentioned inclined-plane, can send the position correction of tape feeding direction bridgeware to controls position before fast for manipulation is above-mentioned, because such structure, send to towards a direction in the process of simultaneously resetting at tape one, when want to make tape unroll fixed amount, listen to same local time again, under the state that the magnetic head installing plate is retreated, utilize the feeding direction of sending controls conversion tape fast to, with the tape fast rewind after the fixed amount, when the magnetic head installing plate is advanced, the position of tape feeding direction conversion controls promptly automatically is modified to original state, with send to fast before identical tape feeding direction begin the action of resetting once more.
Therefore, send to towards a direction in the one side process of resetting at tape one, if want to make tape unroll fixed amount, the maneuvering performance of listening to same local time once more significantly improves, and can reach initial purpose.
The simple declaration of accompanying drawing
Fig. 1～Fig. 3 is the summary rearview of an expression embodiment of the present utility model, and Fig. 4 represents the summary rearview of example in the past.
1a, 1b ... capstan roller,
2a, 2b ... contact roller,
3a, 3b ... the tape reel supporting member,
4a, 4b ... the revolution transmission gear,
5a, 5b ... gear support piece
6 ... the magnetic head installing plate
7 ... magnetic head,
8 ... tape feeding direction bridgeware,
20 ... the elasticity maintaining body,
22 ... the joint portion
23a, 23b ... the inclined-plane,
24 ... tumbler,
25 ... torque spring,
26 ... combined portion,
27 ... send controls fast to.
Fig. 1 to Fig. 3 represents an embodiment of the present utility model, they all are the automatic reversal tape driving devices that one side is seen from the back side, for identical part, the mark prosign of in the past installing shown in Figure 4, and the explanation of omitting its structure, only narrate different parts.
20 for carrying out the elasticity maintaining body that elasticity keeps with tape feeding direction bridgeware 8 among the figure on one of mobile final position of both direction.This elasticity maintaining body 20 is installed on the roughly center section of magnetic head installing plate 6.
On the one hand, the substantial middle of tape feeding direction bridgeware 8 partly is provided with the delthyrium 21 of isosceles triangle, with the apex portion of this delthyrium 21 as joint portion 22.Like this, two hypotenuses connecting of joint portion 22 therewith, i.e. inclined- plane 23a, 23b, the advance and retreat direction of magnetic head installing plate 6 becomes left-right symmetric relatively.
Above-mentioned elasticity maintaining body 20 is made of tumbler 24, torque spring 25 and convex combined 26, and the middle part of tumbler 24 is supported by axle, can swing freely between block 25a, 25b.And the two ends of torque spring 25 are installed in respectively on the end and magnetic head installing plate 6 of swing component 24, therefore have to make tumbler 24 carry out the function that elasticity keeps on the rotation final position of both direction.On above-mentioned combined 26 other end that is installed in tumbler 24, insert in the above-mentioned delthyrium 21.When magnetic head installing plate 6 is in progressive position, combine with above-mentioned joint portion 22 for combined 26, tape feeding direction bridgeware 8 can be limited on the position in two positions, when magnetic head installing plate 6 retreats, be disengaged portion 22 for combined 26, also break away from two inclined- plane 23a, 23b.
In addition, when the magnetic head installing plate when the going-back position advanced position moves, above-mentioned combined portion slides on above-mentioned inclined-plane, with the position correction of tape feeding direction bridgeware for handling the above-mentioned position of sending to fast before the controls.
27 for sending controls fast among the figure.This part 27 can be arranged on the direction parallel with above-mentioned tape feeding direction bridgeware 8 free to advance or retreatly, is forming the pushing that combines with lug boss 28 on the lateral edge that is located at tape feeding direction bridgeware 8 on its lateral edge in conjunction with recess 29.The another side lateral margin of sending controls 27 fast to be provided with the magnetic head installing plate in conjunction with recess 30 and switch in conjunction with recess 31.
The magnetic head installing plate is in conjunction with recess 30 triangularities, and the double pointed nail 32 that is arranged on the part of magnetic head installing plate 6 inserts in it protrudingly.Switch is in conjunction with recess 31 also triangularity, and the lug boss 34 on the flexible connection piece top of the reed switch 33 that the motor quick control of open type is used is inserted within it.The handle 35 that manual control is used also is housed sending to fast on the controls 27.
The motor low speed that is provided with open type in the front of said head installing plate 6 is controlled the flexible connection piece 37 of the reed switch 36 of usefulness.Two switch 33,36 connections parallel with one another by these switches 33,36, drive the rotating motor 38 of above-mentioned capstan roller 1a, 1b and are connected with power supply 39.40 for being controlled at the rotating speed of motor 38 regulator loop of certain low speed value among the figure, and it assigns between the reed switch 36 and motor 38 of low speed control usefulness.
In above structure, as shown in Figure 1, when magnetic head installing plate 6 was moved forward, magnetic head 7 contacted with tape (not expressing among the figure), and simultaneously, the pinch roller 2b of the side of for example reversing is pressed on the capstan roller 1b.Meanwhile, reed switch 36 closures of low speed control usefulness, motor 38 is connected with power supply 39, begins the action of resetting.
When this playback is moved, when tape is wound to terminal, when tape reel supporting member 3b stops, relevant therewith, the gear support piece 5b of the side of reeling rotates, and overcomes the elasticity confining force of above-mentioned elasticity maintaining body 20, and above-mentioned tape feeding direction bridgeware 8 is moved, whereby, the tape feeding direction is converted.At this moment, by joint portion 22 and combined 26 combine, the tumbler 24 of elasticity maintaining body 20 turns to the mobile final position of the other end from the mobile final position of an end.At this moment because the combining recess 30 with the magnetic head installing plate of sending controls 27 fast in conjunction with pin 32 and engage of magnetic head installing plate 6, therefore, when resetting action, prevent and send controls 27 fast to and move.
If in playback course of action shown in Figure 1, wish to be converted to the occasion of sending to fast, be to make magnetic head installing plate 6 be in the state that retreats, get final product sending a left side or the right slip of controls 27 in figure fast to.Because retreating of magnetic head installing plate 6, the reed switch 36 of motor low speed control usefulness disconnects, and motor 38 stops operating.In addition, because retreating of magnetic head installing plate 6 makes combined 26 and break away from joint portion 22, getting in touch between elasticity maintaining body 20 and the tape feeding direction bridgeware 8 is disconnected.In this state, send controls 27 fast to either direction when making, for example in figure during right-hand slip, then as shown in Figure 2, the lug boss 34 on the flexible connection piece top of the reed switch 33 that the motor quick control is used from switch in conjunction with deviating from the recess 31, these switch 33 closures, motor 38 fast rotation, the tape fast winding is on the tape reel of counter-rotating one side.
Like this, in the process that makes the tape fast winding on the tape reel of counter-rotating one side, be converted to when advancing a side, slide and get final product sending the left of controls 27 in figure fast to if wish the feeding direction with tape.When doing like this, this moment the reed switch 33 that the motor quick control is used the lug boss 34 on flexible connection piece top from switch in conjunction with deviating from the recess 31, above-mentioned switch 33 closures, motor 38 fast rotation, however the pushing by sending controls 27 fast to combines in conjunction with recess 29 and lug boss 28, tape feeding direction bridgeware 8 slides to left, like this, as shown in Figure 3, the tape feeding direction is converted to the side of advancing.
Therefore, when tape unroll a certain amount of after, if wish to listen same local time again, handle magnetic head installing plate 6 same as before forward.When doing like this, in the forward motion way of magnetic head installing plate 6, combined 26 of the above-mentioned elasticity maintaining body 20 inclined-plane 23b sliding contact with tape feeding direction bridgeware 8 returns back to position (position of Fig. 1) identical when resetting action last time with this tape feeding direction bridgeware 8.In addition, what be provided with on magnetic head installing plate 6 combines the inclined-plane sliding contact of recess 30 in conjunction with pin 32 with the magnetic head installing plate of sending controls 27 fast to, make this send controls 27 fast to and return back to the neutral position, combine recess 30 combinations once more with the magnetic head installing plate in conjunction with pin 32, prevent and send controls 27 actions fast to.In addition, by answer to the neutral position of sending controls 27 fast to, the flexible connection piece 34 of the reed switch 33 that the motor quick control is used falls into switch in conjunction with in the recess 31, this switch 33 disconnects, because advancing of magnetic head installing plate 6, the low speed revolution once more of reed switch 36 closures of motor low speed control usefulness, motor 38 begins the playback action that tape feeding direction identical when resetting action last time is produced once more.
Claims (2)
1, a kind of automatic reversal tape driving device, it is characterized in that: disposing paired separately capstan roller (1a) in the symmetria bilateralis that is installed on the magnetic head (7) on the magnetic head installing plate (6), (1b), contact roller (2a), (2b), tape reel supporting member (3a), (3b), the gyration of each capstan roller is passed to the revolution transmission gear (4a) of corresponding tape reel supporting member, (4b), and can support each back rotation gear with freely rotating, and can make each revolution transmission gear be in central gear support piece (5a), (5b) of revolution route selectively;
Simultaneously, it also has: make two gear support pieces and two contact rollers link respectively, to-and-fro movement tape feeding direction bridgeware (8) freely; Can make this tape feeding direction bridgeware on one of mobile final position of both direction, carry out the elasticity maintaining body (20) that elasticity keeps; Retreat at the magnetic head installing plate, magnetic head and contact roller are in the state that leaves tape, can change the position of above-mentioned tape feeding direction bridgeware and send controls (27) fast to what both direction carried out that tape sends to fast selectively;
When the tape reel supporting member stops, interrelating therewith, the gear support piece of the side of reeling rotates, and makes above-mentioned tape feeding direction bridgeware overcome above-mentioned elasticity maintaining body elasticity confining force and moves, and the tape feeding direction promptly is converted;
In above-mentioned automatic reversal tape driving device, above-mentioned elasticity maintaining body (20) is installed on the magnetic head installing plate (6), put two inclined-planes (23a) that are provided with joint portion (22) on the direction bridgeware (8) symmetrically and are connected into this joint portion at tape, (23b), and in above-mentioned elasticity maintaining body, also be provided with combined (26) combining with the joint portion of tape feeding direction bridgeware, when the said head installing plate is drawn back the position when moving from progressive position, above-mentioned combined with the joint portion between combine and be disconnected, when the magnetic head installing plate when the going-back position advanced position moves, above-mentioned combined and the sliding contact of above-mentioned inclined-plane are sent the position correction of tape feeding direction bridgeware to controls position in the past fast for manipulation is above-mentioned.
2, the automatic reversal tape driving device of putting down in writing according to claim 1, it is characterized in that: above-mentioned elasticity maintaining body (20) is the rotational motion parts (24) that are bearing in freely on the said head installing plate by rotating, two ends are installed in an end of these rotational motion parts and the torque spring (25) on the said head installing plate respectively, and combined (26) that are arranged on the overshooting shape on the above-mentioned rotational motion parts other end constitute.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32794/88 | 1988-03-12 | ||
| JP3279488U JPH0643856Y2 (en) | 1988-03-12 | 1988-03-12 | Auto reverse type tape drive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2045140U true CN2045140U (en) | 1989-09-27 |
Family
ID=12368758
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88108708 Pending CN1036475A (en) | 1988-03-12 | 1988-12-20 | Automatic reversal tape driving device |
| CN 88221304 Expired - Lifetime CN2045140U (en) | 1988-03-12 | 1988-12-20 | Automatic reversal type magnetic tape drive |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88108708 Pending CN1036475A (en) | 1988-03-12 | 1988-12-20 | Automatic reversal tape driving device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0643856Y2 (en) |
| CN (2) | CN1036475A (en) |
-
1988
- 1988-03-12 JP JP3279488U patent/JPH0643856Y2/en not_active Expired - Lifetime
- 1988-12-20 CN CN 88108708 patent/CN1036475A/en active Pending
- 1988-12-20 CN CN 88221304 patent/CN2045140U/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0643856Y2 (en) | 1994-11-14 |
| CN1036475A (en) | 1989-10-18 |
| JPH01138223U (en) | 1989-09-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |