JPH0413797Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to a tape reel adjusting member that biases a tape reel of a video cassette so that it can freely move in order to hook the tape reel to a reel drive device.

[Conventional technology]

Conventionally, as this type of tape reel adjusting member 10, a metal plate spring is used in which a holding part 12 and a mounting piece part 13 are integrally formed, as shown in FIG. As shown in FIG. 10, the tape reel adjustment member 10 is configured to adjust the convex portion of the tape reel to hook a pair of tape reels R built in the video cassette C to a known reel drive unit (not shown) of the video apparatus. This biases the portion T so that it can freely move. However, according to the above configuration, since a plate spring made of a metal such as stainless steel that has wear resistance, lubricity, and rust prevention effect is used, all the metal parts are made of the same material, which has the disadvantage of increasing the cost of the material. be. Furthermore, the above configuration requires two steps: a cutting step to punch out the metal leaf spring, and a bending step to bend and bias the punched leaf spring, making it difficult and time-consuming to create a line that performs these two steps consecutively. It had become such a task.

[Problem that the invention attempts to solve]

This idea was created as a result of intensive research in view of the above circumstances, and the main challenge was to create a highly reliable tape reel adjustment member that is easy to process and can be assembled into a line, and that can reduce costs by using inexpensive materials. is to provide.

[Means to solve the problem]

In order to solve the above problems, this invention (a) provides a linear spring member consisting of one or more wires or plates; (b) provides a convex portion at the center of the tape reel and an abutment at both ends of the spring member; (c) A synthetic resin attachment piece is provided midway through the spring material to extend outward and connect to the cassette case.

[Effect]

The pressing portions formed at both ends of the spring material have a biasing force. Further, this spring member is attached to the video cassette by a mounting piece. Therefore, the spring member attached to the video cassette via the attachment piece comes into contact with the convex part of the tape reel by the holding part, and the tape reel can be biased freely.

【Example】

Preferred embodiments of this invention will be described below with reference to the drawings. In the tape reel adjusting member 1 shown in FIG. 1, a spring member 2 is made of a single long rectangular metal plate, and both ends of the spring member 2 serve as pressing portions 3, 3 as they are. In this embodiment, the holding portions 3 are formed at both ends of the main body of the spring material, and are formed at the convex portions T of the tape reel R.
and have a wide contact area. Further, a mounting piece 4 is fixed to the middle part of the spring material 2 in a direction perpendicular to the spring material 2, with the spring material 2 interposed therebetween. In this embodiment, the mounting piece 4 is provided with a mounting hole 4a as in the conventional structure, but it may be directly heat-welded to the inside of the casing of the video cassette C made of synthetic resin. Further, the shape of the mounting piece 4 is not limited to the above illustrated example, but may be a diamond shape, a cross shape, or any other shape. With this structure, the tape reel adjusting member 1 is biased by the elastic force of the spring member 2 so that the pressing portions 3, 3 formed at both ends thereof can be resiliently biased. Therefore, elastic force is imparted to the tape reel adjusting member 1 by the spring material 2, and the video cassette C is fixed to the boss B projecting downward from the casing of the video cassette C. The tape reel adjustment member 1 is fixed to (see FIG. 8). In the tape reel adjusting member 1 shown in FIG. 2, a spring member 2 is made of a metal plate, and circular holding portions 3 made of synthetic resin are fixed to both ends of the spring member 2. A mounting piece 4 is fixed to the middle part of the spring material 2 in a direction perpendicular to the spring material 2, with the spring material 2 built-in in the center. Further, this spring material 2 is attached to a boss B on the casing of the video cassette C by means of a mounting piece 4, as shown in FIG.
(This mounting configuration also applies to other embodiments). Therefore, the video cassette C is connected via the mounting piece 4.
The tape reel adjusting member 1 fixedly abuts against the convex portion T of the tape reel R by the holding portions 3, 3, and can bias the tape reel freely. Thereby, the tape reel R can be smoothly positioned at a predetermined position when it is fitted into the reel drive section of the video device. Here, the holding part 3 is the convex part T of the tape reel R.
Although it is necessary to use abrasion-resistant synthetic resin because of the abutment, it is sufficient to use a simple synthetic resin for the mounting piece 4, and the cost of the material can be reduced. An example of molding this tape reel adjustment member 1 will be explained based on FIG. 3. A spring material R wound into a roll is delivered to a molding machine M1, and pressing parts made of different synthetic resin materials are formed at predetermined intervals. 3,
3 and the mounting piece 4 are outsert molded. After this outsert molding, press machines M2 and M3
There, the tape reel adjustment member 1 is formed by bending the mounting piece 4 to both sides and cutting the spring material at both ends of the holding parts 3, 3. (The above-mentioned bending process and cutting process may be performed as one process using a single press machine.) In this way, the tape reel adjusting member 1 of this invention can be produced automatically, making it suitable for mass production and reducing processing costs. Note that this molding method is the same when the spring material is a steel wire, which will be explained below, so further explanation will be omitted. In the tape reel adjusting member 1 shown in FIG. 4, a spring material 2 is made of a single steel wire (in this embodiment, a stainless steel wire for the spring), and holding portions 3 made of abrasion-resistant synthetic resin are attached to both ends of the spring material 2. , 3 are fixed. In the middle part of this spring material 2, in a direction perpendicular to the spring material 2, a mounting piece 4 made of an inexpensive synthetic resin (which does not need to have wear resistance) has the spring material 2 built into the center to prevent it from rotating. It's stuck. Here, to give an example of fixation, if the fixed part of the spring material 2 is formed into a flat shape 2P and covered with a synthetic resin that becomes the holding piece 3, rotation of the spring material in the axial direction can be prevented. . With the above structure, the spring member 2 imparts elastic force to the tape reel adjusting member 1, and the mounting piece 4 secures the tape reel adjusting member 1 to the video cassette. The tape reel adjustment member 1 shown in FIG. 5 has a spring material 2 made of a plurality of steel wires (stainless steel wires for springs in this example), and a holding part 3 made of synthetic resin similar to that shown in FIG. , 3 are fixed. A mounting piece 4 is fixed to a midway portion of the spring member 2 in a direction orthogonal to the spring member 2 . In this embodiment, since a plurality of steel wires are used, the strength and elastic force can be further increased than that of the spring material 2 in the embodiment shown in FIG. 4. In the tape reel adjusting member 1 shown in FIG. 6, a spring material 2 is made up of a plurality of (two in the illustrated example) steel wires 2a and is continuously covered with a synthetic resin cover 2b. This cover 2b exposes both ends of the steel wire 2a, and holding parts 3, 3 are fixed to the tips thereof. By using this cover 2b, the strength of the general spring steel wire 2a can be increased and the rust prevention effect can be achieved, so inexpensive materials (with inferior strength and rust prevention effects) can be used for the spring material, reducing costs. I can figure it out. Further, in this embodiment, a configuration in which the cover 2b and the holding portion 3 are separated is illustrated, but a configuration in which both are integrally covered with a synthetic resin material may also be used. In the tape reel adjusting member 1 constructed as described above, when the holding portion 3 is molded from synthetic resin, a dish-shaped concave portion 3a is formed on the bottom surface of the holding portion 3, as shown in FIG. You can stay there. According to this, the convex part T of the tape reel is fitted into the concave part 3a of the presser part 3 so as to be freely movable within a certain range, and the movable range of the convex part T is regulated by the peripheral wall of the concave part 3a, and the presser part 3 and the convex portion do not separate, which is preferable.

[Effect of the idea]

As mentioned above, this idea uses steel wire strips or rope plates to provide elasticity, and uses a mounting piece made of synthetic resin to attach it to the cassette case, resulting in lower costs than when the entire body is molded from metal. In addition, since the steel wire or steel plate is linear, the forming process is extremely easy through a series of outsert processes and press processes, and automatic production is possible. Furthermore, since the mounting piece is made of synthetic resin, holes for mounting can be easily formed at appropriate positions, or it can be easily fixed to the video cassette by heat welding. Therefore, the cost can be significantly reduced compared to conventional products, and it is suitable for mass production.

[Brief explanation of drawings]

Fig. 1 is a plan view showing an embodiment of the tape reel adjusting member of this invention, Fig. 2 is another embodiment in which synthetic resin holding parts are provided at both ends of a spring material made of a metal plate, and Fig. 3 is the same. An explanatory diagram showing the molding method,
4 is a plan view showing an embodiment in which the spring material and the holding part are different, FIG. 5 is a plan view showing a different embodiment in which a plurality of steel wires are used as the spring material, and FIG. FIG. 7 is a plan view showing a different embodiment covered with a cover, FIG. 7 is a partial side view showing a different embodiment in which a recess is provided in the mounting piece, and FIG. 8 is a state in which the tape reel adjustment member is attached to the tape reel. FIGS. 9a and 9b are a plan view and a side view of a conventional tape reel adjusting member, and FIG. 10 is a partial sectional view showing how the tape reel adjusting member is attached to the tape reel. 1...Tape reel adjustment member, 2...Spring material,
3... Holding part, 4... Mounting piece part.

Claims (1)

[Claims for Utility Model Registration] (1) A linear spring material consisting of one or more wires or plates, and a presser formed at both ends of the spring material that abuts against the convex portion in the center of the tape reel. A tape reel adjusting member comprising: a mounting piece made of synthetic resin that extends outwardly at a midpoint of the spring material and is connected to the cassette case. (2) The spring material wound into a roll was taken out and a holding part and a mounting piece made of different synthetic resin materials were outersert molded at predetermined intervals, and the holding part and mounting piece were attached. The tape reel adjusting member according to claim 1, wherein the tape reel adjusting member is later bent to both sides around the mounting piece and cut off both ends of the holding part. (3) A utility model characterized in that the spring material is made of a long rectangular metal plate, both ends of which serve as holding parts, and a mounting piece is fixed in a direction perpendicular to the middle part of the spring material. A tape reel adjustment member according to claim 1. (4) The spring material is made of a single steel wire, and synthetic resin holding parts are fixed to both ends of the spring material, and a mounting piece is fixed to the middle part of the spring material in a direction perpendicular to the spring material. A tape reel adjusting member according to claim 1, which is characterized by: (5) The spring material is made of multiple steel wires, with synthetic resin holding parts fixed to both ends thereof, and the mounting piece part is fixed in a direction orthogonal to the middle part of the spring material. A tape reel adjusting member according to claim 1, which is characterized by: (6) Registration of a utility model characterized in that the mounting piece that is attached to the spring material is made of inexpensive synthetic resin, and the holding part that abuts against the convex part of the tape reel is made of wear-resistant synthetic resin. A tape reel adjustment member according to claim 1. (7) The tape reel adjusting member according to claim 1, wherein the spring material is made of one or more steel wires and is continuously coated with synthetic resin. (8) The holding part is made of synthetic resin, and a concave part is formed in the bottom surface of the holding part, and a tape reel convex part is fitted into the concave part so as to be freely movable within a certain range,
The tape reel adjusting member according to claim 1, wherein the holding portion and the convex portion are formed so as not to separate from each other.