JP3082588U - Recording device - Google Patents

Abstract

(57) [Summary] (with correction) [PROBLEMS] To reduce the number of parts in a recording apparatus that detects a claw portion of a loaded recording medium and records data on the recording medium only when the claw portion is detected. Simplifies assembly. A pivot shaft 11, a stopper pin 12, and a nut portion 13 are integrally formed on a chassis 1. The detection lever 3 is fitted on the pivot shaft 11 by external fitting.
A recording mechanism unit in which mechanical components for rotating a recording / reproducing head and a reel of a video cassette tape are integrally assembled is disposed to prevent the detection lever 3 from coming off.
When the claw portion for preventing erroneous erasure of the video cassette tape comes into contact with the claw contact portion 3e of the detection lever 3, the detection lever 3 rotates and the switch contact portion 3f contacts the switch 22, and Recording on a cassette tape is permitted.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 According to the present invention, it is possible to load a recording medium provided with a claw indicating that data recording is permitted, detect the claw of the loaded recording medium, and only load the claw when the claw is detected. The present invention relates to a recording device that records data on a recording medium.

[0002]

[Prior art]

 Recording media stored in cassettes, such as video cassette tapes and music cassette tapes, are provided with claw portions for preventing erroneous erasure. Recording devices such as VCRs and cassette tape recorders for music that record video or audio data on a recording medium stored in a cassette are adapted to detect the claw portion, and the claw portion is removed. Data recording on recording media is prohibited.

Japanese Utility Model Laid-Open No. 55-39522, JP-A-4-341954, and JP-A-8-161791 disclose a recording device provided with a detection lever for detecting the claw portion. ing.

[0004] This type of recording apparatus is configured such that a recording mechanism unit in which mechanical components for rotating a recording / reproducing head and a reel of a recording medium are integrally mounted is attached to a chassis. A pivot shaft is projected from the recording mechanism, and a detection lever used for detecting the claw portion is pivotally supported by the pivot shaft.

[0005] The detection lever includes a claw contact portion that contacts the claw portion of the recording medium, and a rod-shaped switch contact portion that contacts a switch on a circuit board attached to the chassis. When the portion comes into contact with the claw portion of the recording medium, the claw portion pushes the claw contact portion, the detection lever rotates about the pivot shaft, and the switch contact portion is switched. Switch on. This switch is turned on / off to permit / prohibit data recording on the recording medium.

When the claw portion of the recording medium is cut off, the claw does not come into contact with the claw contact portion of the detection lever, and the switch contact portion does not contact the switch. And the recording of data on the recording medium is prohibited.

[0007]

[Problems to be solved by the invention]

 However, in the conventional recording apparatus as described above, the recording mechanism has a structure in which a plurality of parts are assembled to a steel plate subchassis, and a pivot shaft is attached to the subchassis of the recording mechanism, and the pivot shaft is attached to the pivot shaft. Because the detection lever is pivotally supported and the detection mechanism is attached to the recording mechanism, it is necessary to have a structure so that the detection lever does not come off from the pivot shaft, so that the number of parts is large and assembly takes time. There was a problem.

The present invention has been made in view of such circumstances, and a pivot shaft is formed integrally with a chassis, and a detection lever is pivotally supported by the pivot shaft, thereby making it possible to improve the prior art. It is intended to provide a recording device that reduces the number of parts and the labor required for assembly.

Another object of the present invention is to dispose the recording mechanism in the vicinity of the tip of the pivot shaft, thereby preventing the detection lever from coming off by the recording mechanism, and making the detection lever smaller than before. An object of the present invention is to provide a recording device having a simple mounting structure.

[0010]

[Means for Solving the Problems]

 The recording apparatus according to the first aspect of the present invention can load a recording medium provided with a claw indicating permission of data recording, and records data on the loaded recording medium by turning on / off. A switch for switching between permission and prohibition of the recording medium, a claw contact portion for contacting the claw portion of the loaded recording medium, and a switch contact portion for contacting the switch, wherein the claw contact portion contacts the claw portion. And a detection lever for detecting when the switch comes into contact with the switch and the switch contact portion contacts the switch and detects the claw portion. The switch contact portion contacts the switch at the tip. A recording device having an urging portion for urging the detection lever in a direction in which the switch contact portion is separated from the switch, wherein the detection lever has a thinned intermediate portion to have flexibility; The pivot shaft for pivoting the detection lever is one A chassis that is formed, the arranged in the vicinity of the tip of the pivot shaft, to a recording mechanism unit used for recording data to the loaded recording medium, wherein Rukoto equipped with.

The recording device according to the second invention is capable of loading a recording medium provided with a claw indicating permission of data recording, and has a claw contact which abuts on a claw of the loaded recording medium. A recording device provided with a detection lever for detecting the claw portion by rotating when the claw contact portion abuts on the claw portion. A shaft is formed integrally with the chassis.

A recording device according to a third aspect of the present invention is the recording device according to the second aspect of the present invention, wherein the recording mechanism is disposed near the tip of the pivot shaft and used for recording data on a loaded recording medium. It is further characterized by being provided.

A recording device according to a fourth aspect of the present invention is the recording device according to the second or third aspect, wherein a switch for enabling / disabling data recording on a loaded recording medium by turning on / off the switch. In a further feature, the detection lever further includes a switch contact portion that contacts the switch.

A recording device according to a fifth aspect of the present invention is the recording device according to the fourth aspect of the present invention, wherein the switch contact portion has a substantially rod shape, and is configured to contact the switch at a tip thereof. It is characterized in that the middle part is thinned to have flexibility.

A recording device according to a sixth aspect of the present invention is the recording device according to the fourth or fifth aspect, wherein the detection lever biases the detection lever in a direction in which the switch contact portion is separated from the switch. It is characterized by further having an urging portion for performing the operation.

In the case of the recording device according to the first and second inventions, the chassis, the recording mechanism, and the pivot are separately prepared by integrally molding the chassis and the pivot. Compared to a configuration in which the support shaft is attached to the sub-chassis of the recording mechanism, the number of components is small, and the labor for assembling can be reduced.

In the case of the recording device according to the first and third inventions, there is no need to provide a structure for preventing the detection lever from coming off on the pivot shaft, or attach a component for preventing the detection lever from coming off at the tip of the pivot shaft. In addition, the detection lever can be prevented from coming off by the recording mechanism, and the number of parts can be reduced, the mounting structure of the detection lever can be simplified, and the assembling work can be reduced as compared with the conventional case.

In the case of the recording apparatus according to the first and fourth inventions, recording on the recording medium is permitted while the switch is on, and recording on the recording medium is prohibited while the switch is off. Therefore, when the claw contact portion of the detection lever comes into contact with the claw of the recording medium, the switch contact portion contacts the switch and the switch is turned on, thereby permitting data recording on the recording medium. If the nail is cut off from the recording medium and the nail contact portion does not contact the nail, the switch contact portion does not contact the switch, and the switch remains off. This can prohibit data recording on the recording medium.

In the case of the recording device according to the first and fifth inventions, even if the detection lever is rotated by a strong force, the flexible portion is not moved after the tip of the switch contact portion contacts the switch. The intermediate portion of the switch abutting portion having flexibility is bent, so that excessive force is not applied to the switch, thereby preventing the occurrence of switch failure.

In the case of the recording devices according to the first and sixth inventions, the detection lever is biased in a direction in which the switch contact portion is separated from the switch, so that the detection lever rotates against this bias. Only in this case, the switch contact portion can be brought into contact with the switch, and malfunction of the device can be prevented.

[0021]

[Embodiment of the invention]

 Hereinafter, the present invention will be described in detail with reference to the drawings showing the embodiments. 1 and 2 are a plan view and a front view, respectively, showing a configuration of a main part of an embodiment of a recording apparatus according to the present invention. The recording device according to the present embodiment can record audio and video on a video cassette tape.

In the figure, 1 indicates a chassis, 2 indicates a circuit board, and 3 indicates a detection lever. The chassis 1 is made of synthetic resin, and has a pin-shaped pivot 11 protruding from the upper surface. A stopper pin 12 protrudes in the vicinity of the pivot shaft 11, and a pin-shaped nut portion 13 having an internal thread is protruded in the vicinity of the stopper pin 12. The pivot shaft 11, the stopper pin 12, and the nut portion 13 are integrally formed with the chassis 1.

The circuit board 2 is attached to the chassis 11. The circuit board 2 is formed by soldering a plurality of electronic components to a rectangular board. The circuit board 2 is provided with a notch 21 so that the pivot shaft 11, the stopper pin 12, and the nut 13 are located in the notch 21 when the circuit board 2 is mounted on the chassis 1. Thus, the pivot 11, the stopper pin 12, the nut 13 and the circuit board 2 do not interfere with each other.

A switch 22 and output terminals 23a, 23b, 23c are mounted on the upper surface of the circuit board 2. The switch 22 is an a contact, and the lever 22a of the switch 22 is urged in a protruding direction inside the case 22b of the switch 22. When the lever 22a protrudes from the case 22b, the switch 22 is in the off state. When the lever 22a is pushed and enters the case 22b, the switch 22 is turned on.

The output terminals 23 a, 23 b, and 23 c are terminals for outputting video signals and audio signals to the outside, and have a cylindrical connection in a lateral direction from a rectangular parallelepiped base erected on the upper surface of the circuit board 2. Are protrudingly provided and are respectively configured.

The detection lever 3 is integrally formed of a synthetic resin, is loosely fitted to the pivot 11, and is attached to the chassis 1. The detection lever 3 has a cylindrical portion 3a that is loosely fitted to the pivot shaft 11, and a horizontally long bar-shaped portion 3b extends from the upper end side of the cylindrical portion 3a. Two connecting portions 3d, 3d extend perpendicularly to the longitudinal direction of the rod portion 3b from one side surface of the end portion of the rod portion 3b opposite to the cylindrical portion 3a. The lower end of a vertically long rectangular plate portion 3c is connected to the tip of 3d. In the vicinity of the upper end of the connecting surface of the plate portion 3c with the connecting portions 3d, a claw contact portion 3e having a triangular shape is provided so as to protrude.

From below the intermediate portion of the rod portion 3b, a substantially rod-shaped switch contact portion 3f extends in a direction substantially opposite to the direction in which the connecting portions 3d, 3d extend from the rod portion 3b. There. The base end 3g of the switch contact part 3f is protruded from the side surface of the rod-shaped part 3b to an appropriate length, and is connected to the tip part 3i via a thin plate-shaped intermediate part 3h. The front end 3i has a substantially inverted L-shape in plan view, and the tip of the inverted L-shaped horizontal bar is connected to the intermediate portion 3h. In addition, the distal end of the distal end portion 3i comes into contact with the lever 22a of the switch 22.

The inverted L-shaped bent portion of the distal end portion 3i comes into contact with a protruding portion 3j provided on the base end portion 3g, and the intermediate portion 3h is bent to form a distal end portion. The bent portion 3i and the projecting portion 3j can be separated from each other.

Hook-shaped spring stoppers 3k and 3l for attaching the spring 31 are protruded from the side surface of the distal end portion 3i on the contact side with the lever 22a and the side surface of the protruding portion 3j. These spring stoppers 3k and 3l are configured so that the tips of the hooks protrude outward from each other, and annular mounting portions provided at both ends of the spring 31 engage with the spring stoppers 3k and 31 respectively. , A spring 31 is attached.

From the side surface of the cylindrical portion 3a, a thin plate-like spring portion 3m extending in the lateral direction substantially perpendicular to the rod portion 3b extends. The tip of the spring portion 3m is thicker than other portions, and the side surface of the tip portion on the switch contact portion 3f side contacts the stopper pin 12.

When the tip of the spring 3m is in contact with the stopper pin 12 in a state where the spring 3m is not bent, the tip of the switch contact portion 3f is separated from the lever 22a of the switch 22 by a predetermined distance. It is supposed to be.

The chassis 1 is provided with a recording mechanism (not shown) in which mechanical components for rotating a recording / reproducing head and a reel of a video cassette tape are integrally assembled. The recording mechanism is fixed to the nut 13 and other nuts provided on the chassis 1 with bolts. A part of the recording mechanism is arranged above the pivot 11 so that the detection lever 3 is prevented from coming off.

When a video cassette tape from which the claw portion for preventing erroneous erasure has not been cut is loaded into a recording apparatus, this claw portion comes into contact with the claw contact portion 3e of the detection lever 3, whereby the claw is brought into contact. The contact portion 3e is pushed. Along with this, the detection lever 3 rotates around the pivot shaft 11 so that the tip of the switch contact portion 3f moves toward the switch 22, and the tip of the switch contact portion 3f contacts the lever 22a. Then, the lever 22a is pushed. The lever 22a enters the case 22b, and the switch 22 is turned on.

At this time, since the tip of the spring portion 3m is in contact with the stopper pin 12, the spring portion 3m is in a bent state.

When the force for pushing the detection lever 3 is too strong, the detection lever 3 is further rotated from the state in which the switch contact portion 3f presses the lever 22a against the case 22b. 31, the intermediate portion 3h is curved, and the tip 3i of the detection lever 3 is separated from the projecting portion 3j. As a result, the force with which the switch contact portion 3f presses the lever 22a does not become too strong, and the occurrence of a failure in the switch 22 can be prevented.

On the other hand, when the video cassette tape is ejected from the recording device, the detection lever 3 is rotated in a direction in which the tip of the switch contact portion 3f is separated from the lever 22a by the bias of the spring portion 3m. Then, the tip of the switch contact portion 3f is separated from the lever 22a, and the switch 22 is turned off.

[0037]

[Effect of the invention]

 As described in detail above, in the case of the recording apparatus according to the first and second inventions, the chassis, the recording mechanism, and the pivot are separately prepared by integrally molding the chassis and the pivot. In addition, the number of parts is smaller and the assembling work can be reduced as compared with the configuration in which the pivot shaft is attached to the sub-chassis of the recording mechanism.

In the case of the recording device according to the first and third inventions, there is no need to provide a structure for preventing the detection lever from coming off at the pivot shaft, or to attach a part for preventing the detection lever from coming off at the tip of the pivot shaft. In addition, the detection lever can be prevented from coming off by the recording mechanism, and the number of parts can be reduced, the mounting structure of the detection lever can be simplified, and the assembling work can be reduced as compared with the conventional case.

In the case of the recording device according to the first and fourth inventions, recording on the recording medium is permitted while the switch is on, and recording on the recording medium is prohibited while the switch is off. Therefore, when the claw contact portion of the detection lever comes into contact with the claw of the recording medium, the switch contact portion contacts the switch and the switch is turned on, thereby permitting data recording on the recording medium. If the nail is cut off from the recording medium and the nail contact portion does not contact the nail, the switch contact portion does not contact the switch, and the switch remains off. This can prohibit data recording on the recording medium.

In the case of the recording device according to the first and fifth inventions, even if the detection lever is rotated by a strong force, the switch contact portion is flexible after the tip of the switch contact portion contacts the switch. The intermediate portion of the switch abutting portion having flexibility is bent, so that excessive force is not applied to the switch, thereby preventing the occurrence of switch failure.

In the case of the recording device according to the first and sixth inventions, the detection lever is biased in a direction in which the switch contact portion is separated from the switch, and the detection lever rotates against this bias. Only when this is done, the present invention has excellent effects such that the switch contact portion can be brought into contact with the switch, and malfunction of the device can be prevented.

[Brief description of the drawings]

FIG. 1 is a plan view showing a configuration of a main part of an embodiment of a recording apparatus according to the present invention.

FIG. 2 is a front view showing a configuration of a main part of the embodiment of the recording apparatus according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chassis 11 Pivot shaft 12 Stopper pin 2 Circuit board 22 Switch 22a Lever 22b Case 3 Detecting lever 3a Cylindrical part 3b Rod part 3c Plate part 3e Claw contact part 3f Switch contact part 3h Intermediate part 3i Tip part 3m Spring part 31 Spring

Claims (6)

[Utility model registration claims] A switch for enabling / disabling recording of data on the loaded recording medium by turning on / off a recording medium provided with a claw for indicating permission of data recording; A claw contact portion that contacts the claw portion of the loaded recording medium, and a switch contact portion that contacts the switch, wherein the claw contact portion rotates when the claw portion contacts the claw portion, A switch abutting portion abuts on the switch, and a detection lever for detecting the claw portion; and the switch abutting portion abuts on the switch at a tip,
A recording device having an urging portion for urging the detection lever in a direction in which the switch contact portion is separated from the switch, wherein the intermediate lever is thinned to have flexibility; It is provided with a chassis integrally formed with a pivot shaft for pivoting the detection lever, and a recording mechanism disposed near the tip of the pivot shaft and used for recording data on a loaded recording medium. A recording device characterized by the above-mentioned. 2. A recording medium provided with a claw for indicating permission of data recording can be loaded, and a claw contact portion that contacts a claw of the loaded recording medium is provided. A recording device including a detection lever that detects the claw portion by rotating when the portion comes into contact with the claw portion; a chassis integrally formed with a pivot shaft that pivotally supports the detection lever; A recording device comprising: 3. The recording apparatus according to claim 2, further comprising a recording mechanism disposed near a tip of the pivot shaft and used for recording data on a loaded recording medium. 4. A switch for switching permission / prohibition of data recording on a loaded recording medium by turning on / off the switch, and the detection lever further has a switch contact portion contacting the switch. The recording device according to claim 2, wherein: 5. The switch contact portion is formed in a substantially rod shape, and is adapted to abut on the switch at a tip, and an intermediate portion is thinned to have flexibility. Item 5. The recording device according to Item 4. 6. The recording apparatus according to claim 4, wherein the detection lever further includes an urging portion for urging the detection lever in a direction in which the switch contact portion is separated from the switch. apparatus.