JPH0650806Y2 - Cleaning cassette - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a cleaning cassette for a video cassette deck (registered trademark type), and more particularly to a tape cassette for wet cleaning.

[Prior art]

Generally, with the spread of videocassettes, the number of times and times the videocassette deck is used increases, which increases the amount of magnetic powder that adheres to the head and running system, which causes image distortion, dropouts, uneven colors, fading, and pinching. There is a problem such as rising due to dirt on the roller. In recent years, as a countermeasure against this, a dedicated cleaning cassette for cleaning to remove dirt has been commercialized. As this cleaning cassette, a wet type cleaning cassette is known as an improved type of a dry type in which a polyester base is coated or contains abrasive powder such as silicon.

Conventionally, this wet type cassette has a cleaning tape d in which fibers such as polyester are impregnated as shown in FIG.
It is a type of cleaning the head cylinder e of the deck by adhering a cleaning liquid such as chlorofluorocarbon / ethyl alcohol or isopropanol to the cleaning head as shown in FIG. The head cylinder e of the deck and the cleaning tape d come into close contact with each other, causing a so-called sticking phenomenon in which friction is extremely high, and the cassette cannot be taken out from the deck. In order to solve this problem, in order to reduce the contact length between the head cylinder e and the tape d, as shown in FIG. 8, a tape loading blocking member a, for example, a pull-out pin is provided to prevent the tape path from being blocked by the blocking member a during tape loading. It has been attempted to change the loading to a substantially V-shaped loading on the head cylinder e to reduce the contact area between the head cylinder e and the cleaning tape d so that at least the sticking phenomenon described above can be avoided.

[Problems to be solved by the device]

However, even if a tape path is made from the head cylinder with this blocking member to reduce the contact area, the tape is pressed against both sides of the head cylinder, and depending on the cleaning liquid, the friction resistance is large and the load on the head cylinder is large. It becomes too big to be overloaded and cannot be used for a deck with a small driving force. Moreover, in a normal VCR, the cylinder head b is inclined in order to perform recording / reproduction by a helical scan method using a rotary head. Therefore, in order to match this, in the cassette of the substantially V-shaped loading system, even if the loading blocking member a is tilted and fixed together with the tilt pin c as shown in FIG. 9, this tilt angle depends on the model of the VCR. Since it is also different, it cannot be applied to all VCRs, so damage to the cleaning tape edge (particularly fraying) occurs. This is caused by the tension applied to the cleaning tape d because the inclination angle of the head cylinder and the mounting angle of the loading blocking member a are different, and when the degree is poor, the cleaning tape d rises and the tape Problems such as entanglement may also be induced, making it unusable, which is a practical problem.

The present invention intends to easily eliminate these drawbacks, and takes advantage of the tape path loading method that partially blocks tape loading, and the roller of the blocking member does not damage the cleaning tape edge and is safe and accurate. It is an object of the present invention to provide a cleaning cassette that enables smooth cleaning operation.

[Means for Solving the Problems]

The present invention is provided with a cleaning tape 4 stretched between a supply reel 2 and a take-up reel 3 in a case 1, and a pair of tape loading member insertion recesses provided on the front side of the case.
In a cleaning cassette provided with a roller 6 as a blocking member for blocking a part of tape loading between 5 and 5, support plates 7 ₂ and 7 ₂ are formed at upper and lower edges at intervals larger than the tape width of the cleaning tape 4. The tape guide member 7 having a U-shaped cross section is provided with rollers 6 and 6 for mounting the tape.
Is mounted between the support plates 7 ₂ and 7 ₂ so as to be inclined with respect to each other, and is arranged to face each other in a substantially V shape.

[Action]

In this cleaning cassette, the tape is unloaded as shown in FIG. 1 and the video cassette deck is cleaned as shown in FIG. 5B, and the cleaning tape 4 is mounted on the rollers 6, 6. U-shaped tape pass is performed and the head cylinder B is loaded so that only one side of the head cylinder B travels.
Further, the rollers 6, 6 of the loading preventing member rotate on the tape guide member 7 as the tape 4 runs, and move to the center position with respect to the tape without causing the cleaning tape 4 to rise or damage the tape edge, and synchronize with the tape. However, there is no rising when the tape is running, and a stable cleaning operation can be performed.

〔Example〕

The embodiment of the present invention shown in FIGS. 1 to 5 will be described. A front lid 14 which is pivotally supported by the case body and is rotatable on the front side of a case 1 composed of an upper case and a lower case, and a supply reel 2.
And a cleaning tape 4 stretched around the take-up reel 3, and a pair of recesses 5 for inserting the tape loading member are provided on the front side of the case 1, and the recesses 5, 5 for inserting the tape loading member are provided. In a cleaning tape cassette, which is provided with a roller 6 as a blocking member for partially blocking tape loading in a part of a case sandwiched between the cases, a cleaning tape cassette is provided at both upper and lower edges at intervals larger than the tape width of the cleaning tape. Rollers 6, 6 capable of mounting a tape on a tape guide member 7 having a U-shaped cross section formed by forming the support plates 7 ₂ , 7 ₂ are axially mounted between the support plates 7 ₂ , 7 ₂ and inclined, respectively. This is a cleaning cassette in which the tape path portion 9 is formed so as to face each other in a substantially V shape at an angle.

In this case, as the roller 6 comprises a support shaft 6 _1, 6 ₁ at both ends made of slipping resin as polyacetal, fit into the shaft hole ₇₁ is provided a support shaft ₆₁ on the support plate 7 ₂ cuttings be one that is rotatably mounted to the tape guide member 7, to support the end surface of the roller (6) on the inclined bearing surface 7 ₄ in the support plate 7 ₂ of at least the lower can smooth rotation The roller inclination angle of one of the rollers 6 and 6 is about 80 ° to 85 ° with respect to the horizontal line, preferably 81 °. An angle of about 100 ° to 105 °, preferably 101 ° .30 'to 104 ° is provided at opposite sides of the guide member 7 at intervals with a V-shape facing each other to form a head cylinder in which the running tape is inclined and rotated. Even if they come into contact with each other, they can run while suppressing rising.

In this case, the roller 6 that partially blocks the tape loading has a mechanism that is approximately similar to the inclination angle of the head cylinder B, and is sandwiched between the tape loading member insertion recesses 5 and 5 on the front side of the case 1. Within the range, a pair is provided so as to load in a substantially U shape.

The roller 6 is formed separately from the case 1 and the guide member 7, and is arranged so as to be opposed to the guide member 7 in a substantially V shape having an inclination angle with respect to the running direction of the tape 4, and is rotatable with respect to the guide member 7. The upper and lower cases 1, which are pivotally supported, have hook-shaped claw pieces 7 ₃ , 7 ₃ formed on support plates 7 ₂ , 7 ₂ that are provided opposite to the upper and lower edges of the guide member 7. It is arranged to be sandwiched between the partition walls 8 of 1 and the hook-like claw pieces
If 7 ₃ and 7 ₃ are fitted from above into a case partition wall, for example, a partition wall 8 that is provided oppositely and covered with an upper case, it can be fixed so that it can be moved slightly back and forth by pushing on the deck side, and assembly work is easy. The tape can be run smoothly with a low resistance (Fig. 2). The cleaning tape 4 is mounted on the roller 6 to perform a tape pass, and both the roller 6 and the guide member 7 are provided at the same position as the tape contact wall surface or at the inner depth thereof, and the front cover 14 is closed. At the same time, the front cover 14 is also configured to prevent the occurrence of problems such as a defective lock. Also
Although it is in an unloading state during FF / REW, if the guide member 7 is locked with a slight floating margin, the tape 4 can be smoothly slid and run without any hindrance.

In addition, the case 1 is a divided case including an upper case and a lower case, and the guide member 7 is provided on the front side thereof.
A peripheral wall 11 which is provided with a tape path portion 9 to be fitted and which is upright on a part or all of the hole edge of a positioning hole 10 into which a pin is fitted and inserted.
It is convenient to project the tape so that it does not run behind the pin into which the tape 4 is inserted.

In the drawing, A is a tape loading member, B is a rotary head cylinder, C is an inclined pin, 12 is a tape contact wall surface, and 13 is a cleaning liquid injecting portion in the tape running path, which can attach or impregnate the cleaning liquid to the tape. It is composed. A front lid 14 is provided on the case 1 so as to be freely opened and closed.

[Effect of device]

According to the present invention, a roller for mounting a tape is mounted on a tape guide member having a U-shaped cross section by forming support plates at both upper and lower edges at intervals larger than the tape width of the cleaning tape.
By arranging the support plates axially and arranging them at an inclination angle so as to face each other in a substantially V-shape, the tape pass is performed with a tape contact area as small as possible, and a smooth tape without sticking phenomenon. In addition to guaranteeing running, it can be used properly even with a small driving force by reducing the load, and since the tilt angle conforming to the tilt angle of the head cylinder of the deck can be obtained, the offset function can be exerted with a pair of rollers, It is possible to minimize problems such as tape edge damage and rising when using the loading prevention member, and there is a practical effect that safe and accurate deck cleaning work can be performed.

[Brief description of drawings]

FIG. 1 is a plan view showing an internal structure of tape unloading (inoperative state) showing an embodiment of the present invention, FIG. 1A is a perspective view when a front lid is opened, and FIG. FIG. 3 is an enlarged sectional plan view showing the same, FIG. 3 is a front view showing its operating state, and FIG.
FIG. 5 is an enlarged front view of an operation state of a main part showing a relationship with a rotary head, FIG. 5 is a perspective view of a tape path part in a separated state, and FIG.
FIG. A is a longitudinal sectional view of a roller portion, FIG. 5B is a plan view for explaining tape loading (operating state), FIG. 6 is a plan view for a conventional example, and FIGS. 7 and 8 are explanatory planes for the operating state. FIGS. 9 and 9A and 9B are enlarged front views of the operation state of the main part showing the relationship with the rotary head. 1 ... Case, 2 ... Supply reel, 3 ... Take-up reel,
4 ... Cleaning tape, 5 ... Tape loading member insertion recess, 6 ... Roller, 6 ₁ ... Support shaft, 7 ... Guide member, 7 ₁ ... Shaft hole, 7 ₂ ... Bearing plate, 7 ₃ ... … Hooked nails,
7 ₄ …… Inclined bearing surface, 8 …… Partition wall, 9 …… Tape path part, 10 …… Positioning hole.

Continuation of the front page (56) Reference JP 63-2113 (JP, A) JP 63-2112 (JP, A) Actual opening 62-36416 (JP, U) Actual opening 61-33207 (JP , U)

Claims (3)

[Scope of utility model registration request] 1. A cleaning tape (4) stretched between a supply reel (2) and a take-up reel (3) in a case (1).
And a blocking member roller (6) for partially blocking the tape loading between the tape loading member insertion recesses (5) (5) provided in a pair on the front side of the case. A roller (6) for mounting the tape is mounted on the tape guide member (7) having a U-shaped cross section by forming support plates (7 ₂ ) (7 ₂ ) on both upper and lower edges at intervals larger than the tape width of (4). ) (6)
A cleaning cassette characterized in that it is axially mounted between the support plates (7 ₂ ) and (7 ₂ ), and each of them is provided with an inclination angle so as to face each other in a substantially V shape. Wherein said roller (6) is, the support shaft at opposite ends made of slipping resin (6 ₁₎ (6 ₁₎ comprises a support shaft ₍₆₁₎ of said support plate (7 ₂₎
To be fitted into the shaft hole ₍₇₁₎ provided be one that is rotatably mounted to the tape guide member (7), the inclined bearing surface (7 ₄₎ in said support plate (7 ₂₎ The cleaning cassette according to claim 1, wherein the end surface of the roller (6) is supported. 3. The rollers (6) (6) are spaced at one roller inclination angle of about 80 ° to 85 ° and the other roller inclination angle of about 100 ° to 105 °. The cleaning cassette according to claim 1 or 2, wherein the cleaning cassette is provided on both sides of the guide member (7).