JPH03113863A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To prevent the occurrence of a hitting noise even when a vibration is given from the outside by moving a tape guide sliding member into a narrow groove part of a tape guide holding member and holding elastically the sliding member at the tape unloading time. CONSTITUTION:At the time of unloading the tape, a tape guide on the supply side is retreated along a guide groove 6 on the supply side to reach the tape guide holding member 101. Now, the guide groove 6 for the tape guide and a rear part engagement part 4b for the tape guide are passed through an introducing part 104 for the tape guide are passed through an introducing part 104 which is wider in width than a diameter Db of the rear part engagement part 4b and moved into the tape guide holding groove part which is slightly narrower in width than diameters Da and Db of front and rear engagement parts 4a and 4b. Then, when the tape guide part is further moved backward, an elastic beam part 105 is elastically deformed in the expanding direction to the side of a subgroove part 103 to hold elastically the rear part engagement part 4b between both sides of the elastic part. The front part engagement part 4a between both sides of the elastic part. The front part engagement part 4a is also elastically inser-held in a simmilar manner. The same is the case with a tape guide on the take-up side. By this method, the occurrence of a hitting noise is eliminated even when an vibration is given from the outside at the tape unloading time.

Description

[Detailed Description of the Invention] [Field of Application in Business A] This invention relates to a tape-shaped magnetic recording medium (hereinafter referred to as magnetic tape) housed in a cassette, such as a digital audio recorder or a video tape recorder. The present invention relates to a magnetic recording/reproducing device configured to record and reproduce signals by pulling the tape out of the cassette and winding it at a predetermined angle around a cylinder equipped with a magnetic head, and particularly relates to a tape loading mechanism.

[Prior art] Fig. 3 and Fig. 4 show, for example, the technique of
55 is a plan view showing the configuration of a conventional magnetic recording/reproducing apparatus disclosed in Japanese Patent No. 55, in a tape unloading state. FIG.

In the figure, (1) is a deck base (hereinafter referred to as the base) that is a base for mounting each element, and (2) is a magnetic head that records information signals such as audio on a magnetic tape (100). or reproduce signals recorded on magnetic tape (10G).

Reference numeral (3) denotes a cylinder unit, which consists of a rotating cylinder equipped with the magnetic head (2) and a stationary cylinder equipped with a running guide for the magnetic tape (100). (4) is a guide member for drawing out the tape on the supply side (hereinafter referred to as tape guide), and the magnetic tape (10
0) at a predetermined angle.

(5) is the tape guide on the take-up side, and (6) is the tape drawer guide groove on the supply side (hereinafter referred to as the supply side guide groove). Sliding members (hereinafter referred to as rollers) (4a), (4b
) are fitted to guide the reciprocating movement of the tape guy )' (4) between the first position and the second position. (A) is a guide groove for pulling out the tape on the winding side (hereinafter referred to as the winding side guide groove), which includes two rollers (5a), front and rear, attached to the tape guide (5) on the winding side.

(5b) is fitted to guide the reciprocating movement of the tape guide (5) between the first and second positions.

(8) is a supply-side guide stopper, which is a positioning member for accurately positioning the supply-side tape guide (4) at the second position; (9) is a take-up-side guide stopper;
0) is a capstan for feeding the magnetic tape (1 (IQ)) at a constant speed, and (11) is a pinch roller that transfers the rotational force of the capstan (10) to the magnetic tape (10 (1)
tell to.

(12) is the supply side reel that supplies the magnetic tape (100), and (13) is the magnetic tape (100) fed out by the capstan (10) and pinch roller (11).
), the take-up reel (14) is the magnetic tape (10
0) and the supply side tape guide (4) in the front part.
The cassette is also provided with a mouth portion, which is a space in which a tape guide (5) on the winding side can be stored.

5 and 6 are plan views showing the tape unloading state and the tape loading state of the tape loading mechanism of the magnetic recording/reproducing apparatus. In the same figure,
(15) is a drive lever that can be moved reciprocally in the left-right direction L→R in the figure using a motor (not shown) as a drive source.
1). (16) is the drive lever (15
), the support shaft (17) is the supply side biasing lever,
It is configured to be rotatable around the support shaft (16),
One end of a biasing spring (29) is engaged with one end of the spring.

(18) is a support shaft provided on the drive lever (15);
Reference numeral (19) denotes a take-up side biasing lever, which is configured to be rotatable around the support shaft (18), and one end of which is engaged with the other end of the biasing spring (29). (20) is a support shaft provided on the base (1), (21) is a first power reversing arm, and a gear portion (2
LA), and one end thereof is provided with an engaging portion for engaging with the drive lever (15).

(22) is a support shaft provided on the base (1), and (23) is a second power reversing arm, which has a gear part (23^) on the outer periphery around the support shaft (22). The power reversing arm (21) of No. 1 is configured to be rotatable by meshing with the gear portion (21^). (24) is the first toggle link on the supply side, one end of which is connected to the second power reversing arm (
23). (25) is the second toggle link on the supply side, one end of which is connected to the first toggle link (25).
4), and the other end is rotatably connected to the tape guide (4) on the supply side.

(26) is a support shaft provided on the base (1), and (27) is a 341 toggle link on the take-up side, which can rotate around the support shaft (26) and is connected to the drive arm (15). It has an engaging part. (2g) is a second toggle link on the winding side, one end of which is connected to the first toggle link (27) for relative rotation, and the other end rotated to the tape guide (5) on the winding side. movably connected. (29) is a biasing spring.

Figure 7 shows the tape guides (4) and (5) and the guide groove (
8) and (7), and in the same figure, (4a) and (5a) are guide grooves (8).
, (7) , (4b) , (5
b) is a rear roller, and the supply side guide groove (6) and the take-up side guide m (7) are arranged so that the supply side tape guide (4) and the take-up side tape guide (5) can smoothly reciprocate.
Rollers (4a) in tape guides (4) and (5)
), (4b) and (5a), (5b) width,
That is, it is configured to be wider by δ than the diameters (Da) and (Db).

Next, the operation of the above configuration will be explained.

As shown in Figure 3, when the cassette (14) is loaded into the device, the supply side tape guide (4), the take-up side tape guide (5)
) and other tape loading members are magnetic tape (100
) is pulled out from the cassette (14), and the pulled-out magnetic tape (100) is wound around the cylinder unit (3) over a predetermined angle, as shown in FIG.

Then, attach the pinch roller (11) to the capstan (lO).
By pressing the magnetic tape (100) between the two, the rotational force of the capstan (10) is transmitted to the magnetic tape (100) via the pinch roller (11), and the magnetic tape (100) is The tape (100) is fed six times at a constant speed.

At this time, the magnetic tape (10
0) or magnetic tape (100)
Play back the recorded signal. In addition, the capstan (1
0) and the pinch roller (11) on the supply side reel (
The magnetic tape (100) sent out from 12) is wound onto a take-up reel (13).

The operation of winding the magnetic tape (100) from the cassette (14) around the cylinder unit (3) in the above magnetic recording/reproducing apparatus will be described in detail below.

First, the cassette (14) is loaded into the device, then the fifth cassette (14) is loaded into the device.
The drive lever (15) shown in the figure is slid in the right direction R in the figure by a motor (not shown). As the drive lever (15) shifts to the 8th shift, the supply biasing lever (17) and the winding bias lever (19) provided on the drive lever (15) also move in the right direction R. As these biasing levers (17) and (19) move, the first power reversing arm (21) that comes into contact with them and the first toggle link (27) on the winding side are moved from the support shaft (20), respectively.
) and pivot clockwise around the support shaft (2B) as shown by arrows r1 and r2.

Gear part of the first power reversing arm (21) (2nd construction)
The second power reversing arm (23) that engages with the first power reversing arm (21) rotates counterclockwise as shown by arrow f11, and the first power reversing arm on the supply side fixed thereto The toggle link (24) is also centered on the support shaft (22) with the arrow 11
As shown in 1, it rotates counterclockwise. This first toggle link (24) is connected to the second toggle link (25) on the supply side.
Also, the first toggle link (27) on the winding side pushes out the second toggle link (28) on the winding side in the upper direction of the cylinder unit (3) in the figure.

Here, the second toggle link (25) on the supply side is attached to the tape guide (4) on the supply side, and the second toggle link (25) on the take-up side
28), respectively, and the supply side tape guide (4) and the take-up side tape guide (5) are connected to the supply side guide groove (6) and the take-up side guide, respectively. Because the movement is guided by the groove (7),
Supply side tape guide (4) and take-up side tape guide (
5) are respectively connected to the supply side guide grooves (6) as shown in Fig. 6.
) and the winding-side guide groove (7), and stops at a predetermined position by coming into contact with the supply-side guide stopper (8) and the winding-side guide stopper (9), as shown in FIG.

In the state shown in FIG. 6, when the drive lever (15) is further slid to the right, the first toggle link (24) on the supply side and the first toggle link (27) on the winding side are rotated. However, since the supply side tape guide (4) and take-up side tape guide (5) are regulated in position by the above-mentioned supply side guide stopper (8) and take-up side guide stopper (9), it is difficult to move. The supply side biasing lever (17) does not rotate in the clockwise direction around the spindle (16), and the take-up side biasing lever (19) rotates clockwise around the spindle (16).
By rotating counterclockwise around 8), the biasing spring (
29) to absorb the movement of the drive lever (15).

As a result of the above operations, the spring force of the biasing spring (2S) moves the supply tape guide (4) and the take-up tape guide (5) to the supply guide stopper (6).
and press against the winding side guide stopper (7) to position it.

Also, the supply side tape guide (4) and the take-up side tape guide (5) are stored in the first position in the cassette mouse from the second position where the magnetic tape (100) is wound around the cylinder unit (3). The tape unloading operation will be described in detail below.

In the state shown in FIG. 6, when the drive lever (15) is slid to the left in the figure, the right edge of the supply-side locking hole (15a), which is a part of the drive lever (15), and the winding The first power reversal arm (21) and the first toggle link (27) on the winding side come into contact with the side locking piece (15b), and as the drive lever (15) moves, the first power reversal occurs. The arm (21) and toggle link (27) rotate counterclockwise as shown by the arrows -rl and -r2, performing an operation opposite to the above-described tape loading operation, and the supply side tape guide (4) and the winding The removal tape guide (5) moves to a predetermined position within the cassette mouth to complete unloading.

[Problems to be Solved by the Invention] Since the conventional magnetic recording/reproducing device is configured as described above, when the tape is unloaded when the supply tape guide and the take-up tape guide are in the cassette mouth,
As shown in Figure 7, tape guides (4) and (5)
rollers (4a), (4b) and (5a),
(5b) and each guide groove (B) and (7), there is a gap δ, respectively, and the tape guide (4),
Since no biasing force is acting on tape guides (5), if an external force such as vibration is applied to these tape guides (4) and (5), tape guides (4) and (5) will move within the range of this gap δ. It moves inside and produces sound.

That is, in a portable magnetic recording/reproducing device such as a car-mounted device or a portable device, vibrations are frequently applied from the outside while the device is being moved, and the tape guide (4) is damaged.

(5) collides with the walls of the guide grooves (6) and (7), resulting in a "katakana" impact sound, which causes discomfort and anxiety to the user.

This invention was made in order to solve the above-mentioned problems, and even if vibrations are applied from the outside when unloading a tape, no impact sound is generated and it does not cause discomfort or anxiety to the user. The purpose of the present invention is to provide a magnetic recording/reproducing device that does not require a magnetic recording device.

[Means for Solving the Problems] A magnetic recording/reproducing device according to the present invention has an introduction part wider than the sliding member of the tape guide and a slightly narrower width than the sliding member in the vicinity of the tape unloading part of the tape guide guide groove. A tape guide holding member formed continuously with the groove is provided,
The tape guide holding member is characterized in that an elastic portion is formed on at least one side of the narrow groove portion to be elastically displaceable in a direction to widen the groove width as the sliding member is moved into the tape guide holding member.

[Function] According to the present invention, when the tape is unloaded, the sliding member of the tape guide moves from the wide introduction part to the narrow groove part of the tape guide holding member, so that the elastic part is elastically displaced in the direction of widening the groove width, As a result, the sliding member is elastically clamped from both sides in the width direction,
It is possible to eliminate the gap between the sliding member of the tape guide and the tape guide guide groove.

[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described based on the drawings.

FIG. 1 shows a supply side guide groove (6) during tape unloading of a magnetic recording/reproducing apparatus according to an embodiment of the present invention, and a tape guide holding member provided at the end of this guide groove (6) on the cassette mouse side. FIG.

The overall configuration of the magnetic recording/reproducing device is shown in Figures 3 and 4.
Since the configuration of the tape loading mechanism is the same as that shown in FIGS. 5 and 6, a description thereof will be omitted, and only the points that are different from the conventional example will be described.

In FIG. 1, reference numeral (101) denotes a tape guide holding member, which is integrally formed of resin and fixed to the base (1) by Actsert molding, screwing, adhesive, etc. (
102) is a tape guide holding groove;
) The diameter of rollers (4a) and (4b) at (()
a) It is formed slightly narrower than (ob).

(104) is the tape guide introduction part (shaded part in the figure),
The diameter (Da) of the rollers (4a) and (4b),
It is formed wider than (Db).

(103) is a sub-groove portion, and the tape guide holding groove portion (103) is a sub-groove portion.
02) along the - side of the tape guide holding member (101
), and the roller (4a) is formed between this sub-groove (103) and the tape guide holding groove (102).
, (4b), an elastic beam portion (105) is formed that can be elastically displaced in the direction of widening the groove width (L).

The above is an explanation of the tape holding member on the supply side.
The tape holding member on the winding side also has a similar configuration.

Next, the operation of the tape guides (4) and (5) when unloading will be explained.

In FIG. 1, the supply tape guide (4) retreats along the supply guide groove (6), and the tape guide holding member (1
01). Here, the tape guide guide groove (6) and the rear roller (4b) of the tape guide (4) have an introduction part (104) wider than the diameter (Dd) of the rear roller (4b).
) and enter the tape guide holding groove (102), which is slightly narrower than the diameters (Da) and (Db) of the front and rear rollers (4a) and (4b).

When the tape guide part (4) is further moved rearward from this state, the elastic beam part (105) moves into the sub-groove part (103).
side, that is, in the direction of widening the groove width (L), and elastically pinches the rear roller (4b) from both sides, and the front roller (4a) also passes through the introduction part (104).
Similarly, it is elastically held by both sides of the tape guide holding groove (102).

Note that the take-up side tape guide (5) also has a similar configuration and performs similar operations and effects.

In addition, in the above embodiment, the tape guide holding groove part (102
), but as shown in Fig. 2, the tape guide holding groove (102)
Even if the sub groove portions (103) are formed on both sides and the elastic beam portions (105) are formed on both sides, the same effect as in the above embodiment can be obtained.

[Effects of the Invention] As described above, according to the present invention, the sliding member of the tape guide can be moved into the narrow groove of the tape guide holding member and held elastically during tape unloading. , there is no gap between the groove and the sliding member of the tape guide, and even when vibration is applied from the outside, no impact sound is generated, which does not cause discomfort or anxiety to the user. This has the effect of eliminating the need for

[Brief explanation of drawings]

FIG. 1 is a plan view showing a tape guide holding member provided at the cassette mouse side end of the supply side guide groove of a magnetic recording/reproducing device according to one embodiment of the present invention, and FIG. 2 is another embodiment of the present invention. 3 is a plan view showing the configuration of a conventional magnetic recording/reproducing device in a tape unloaded state. FIG. 4 is a plan view of a conventional magnetic recording/reproducing device during recording and reproducing. 5 and 6 are plan views showing the unloading state and loading state of the tape loading mechanism of a conventional magnetic recording/reproducing device,
FIG. 7 is a plan view showing the cassette mouse side end of the supply side guide groove of a conventional magnetic recording/reproducing device. (1) Base, (2) Magnetic head, (3)
... Cylinder unit, (4) ... Supply side tape guide, (5) ... Take-up side tape guide, (6) ...
・Supply side guide groove, (7) - Winding side guide groove, (4a)
...Front roller of supply side tape guide, (4b)...
- Rear roller of supply side tape guide, (14)--Cassette, (100)--Magnetic tape, (101)--
-Tape guide holding member, (102)...Tape guide holding groove, (103)--Sub-groove, (104)...
・Introduction part, (105)...Elastic beam part. Note that the same reference numerals in the figures indicate the same or corresponding parts. 1st 1: Pace 6: Ai Reijun Kannai Groove 101: F-B Force Id 4 Signs Serving 104: Introduction 105: Tan A Station Station 2 Figure 3 Figure 3 Nijiring Unit 71 Mr. Yi Higashi - CJl 14: Power tt 100 2 % Tefu Fig. 4 J Fig. 5 Fig. 6 Fig. 7 Procedural amendment (voluntary) 1. Case indication patent @ l-250873 No. 2, Name of the invention Magnetic recording and reproducing device 3, Person making the amendment 5, Each column of "Claims", "Detailed description of the invention" and "Brief description of the drawings" of the specification to be amended; Drawing 6, Contents of amendment A, Specification: (1) The claims are amended as shown in the attached sheet. (2) Page 3, line 16; "Sliding member (hereinafter referred to as roller)" should be corrected to "engaging part." (3) 2 places on page 7, line 1, line 5, page 12, line 9, page 15, line 5, line 8, lines 13-14, page 16 5th line, 6th line, 7th line, 13th line, 14th line, page 18, line 14, and page 15, page 5. ” and correct it. (4) Page 13, line 12, lines 12-13, liquid 16
Line date Page 11, 1st line date Pit A line date Electric line R, 17th
Page 8th line and IT line; "Sliding member" should be corrected to "Retaining part" respectively. Drawing B1: (1) In order to correct the arrows marked “rl” and “11” in Figure 5, we will resubmit the same figure as attached. (2) In order to correct the arrows marked r-rN in Figure 6, we will resubmit the same figure as attached. The above amended claims [(1) A cylinder equipped with a magnetic head, a mouth portion of a cassette containing a tape-shaped magnetic recording medium, and the tape-shaped magnetic recording medium wound around the cylinder at a predetermined angle. a tape drawer guide member that is movable back and forth between the tape drawer guide members; a tape drawer guide groove formed on the base so that a menzu plate attached to the tape drawer guide member is fitted; In a magnetic recording and reproducing apparatus equipped with a loading mechanism that drives and reciprocates the tape pull-out guide member along the guide groove, the tape pull-out guide groove is located near the tape unloading portion of the tape pull-out guide groove than the specie plate of the guide member. A tape guide holding member is provided in which a wide introduction portion and a groove portion slightly narrower than the above-mentioned width are formed in succession. 6. A magnetic recording/reproducing device characterized in that an elastic portion is formed that can be elastically displaced in the direction of widening the groove width as the groove width is transferred.

Claims (1)

[Claims] (1) Capable of reciprocating movement between a cylinder equipped with a magnetic head, a mouth portion of a cassette containing a tape-shaped magnetic recording medium, and a position where the tape-shaped magnetic recording medium is wound around the cylinder at a predetermined angle. a tape drawer guide member, a tape drawer guide groove formed on the base so that the sliding member attached to the tape drawer guide member fits into the tape drawer guide member, and a tape drawer guide member attached to the tape drawer guide member along the guide groove. In a magnetic recording and reproducing apparatus equipped with a loading mechanism for driving and reciprocating a member, the tape pull-out guide groove has an introduction part wider than the sliding member of the guide member and a slightly wider width than the sliding member near the tape unloading part of the guide groove. A tape guide holding member is provided in which a narrow groove is formed continuously, and at least one side of the narrow groove of the tape guide holding member is elastically displaced in the direction of widening the groove width as the sliding member is moved. A magnetic recording/reproducing device characterized in that a flexible elastic portion is formed.