JPH0519875Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a cartridge insertion/removal device for an FDD device, and particularly relates to a mounting mechanism for a cartridge return spring.

[Conventional technology]

FIG. 3 shows a conventional cartridge insertion/removal device for an FDD device. In the figure, 1 is a cartridge inserted into the main body of the device, 2 is a helical spring used to return the cartridge, and 3 is a cartridge insert/remove device for a conventional FDD device.
is a set lever that is rotated in conjunction with the advance and retreat of the cartridge 1, and includes a locking piece 3a that abuts the tip of the lever at a predetermined insertion position of the cartridge, and a locking portion 3b that locks one end of the helical spring 2. have. Reference numeral 4 designates a fixed shaft having a mounting portion 4a to which the helical spring 2 and the set lever 3 are mounted, and a female thread 4b on its tip surface; 5 designates the helical spring 2;
A board 6 of the apparatus main body having a locking part 5a for locking the other end is a set screw screwed into the female screw 4b and for fixing the set lever 3 and the helical spring 2 on the fixed shaft 4. be.

Next, the assembly of each of the above parts will be explained. That is, one end of the helical spring 2 is inserted into the inside of the set lever 3 while being locked to the locking portion 3b of the set lever 3. Next, while maintaining this state, the helical spring 2 and the set lever 3 are attached to the attachment part 4a provided on the fixed shaft 4 installed on the base plate 5 of the main body of the device, and finally fixed to the female screw 4b. These are prevented from coming off by screwing the screws 6 together.

[The problem that the idea aims to solve]

Since the cartridge insertion/removal device of the conventional FDD device is constructed as described above, it requires the mounting portion 4a of the helical spring 2 on the fixed shaft 4 and the set screw 6 of the set lever 3, and the assembly thereof is also time-consuming. There was a problem.

The purpose of this invention is to eliminate the use of the above-mentioned set screws in order to solve the above-mentioned problems.

[Means to solve the problem]

In the case of this invention, the mounting portion 13 of the helical spring 12 is fitted onto the fixed shaft 14 on the set lever 13.
a is integrally provided, and a locking protrusion 13c that allows the helical spring 12 to be inserted in a normal state into this mounting portion and prevents it from coming off in a state where spring pressure is applied after insertion is integrally provided. I'm letting you do it.

[Effect]

In the case of this device, the inner diameter of the helical spring is large in its normal state before it is assembled, and when the spring is compressed by the assembly, its diameter decreases, causing it to collide with the locking protrusion provided on the attachment part of the set lever and come out. Never.

〔Example〕

An embodiment of this invention will be described below. That is, in FIGS. 1 and 2, 11 is a cartridge inserted into the main body of the apparatus, 12 is a helical spring used for returning the cartridge,
Reference numeral 13 denotes a mounting portion 13a to which the helical spring 12 is mounted, an engaging piece 13b that abuts the tip of the cartridge 11 at a predetermined insertion position, and a projection provided on the outer peripheral surface of the mounting portion 13a for the helical spring 1.
The set lever 14 of the cartridge 11 has a locking protrusion 13c that allows the cartridge to be inserted into the part in the normal state of 2 and prevents it from coming out in the state where the spring pressure is applied after the insertion. A fixed shaft 15 is inserted and serves as the center of rotation of the set lever 13, and 15 is a lock that locks the other end of the helical spring 12, one end of which is locked to the locking portion 13d on the opposite side of the locking protrusion 13c. This is a substrate of the device main body having a portion 15a.

Next, the assembly of each of the above parts will be explained. First, when inserting the helical spring 12, the inner diameter of the helical spring 12 is set large so that it does not hit the locking protrusion 13c of the set lever 13, so the insertion is performed smoothly ( condition shown in Figure 1).

Next, when one end of this helical spring 12 is locked to the above-mentioned locking part 13d and the other end is locked to the locking part 15a provided on the board of the main body of the device, its inner diameter is reduced and this becomes the above-mentioned locking protrusion. 13c and is prevented from coming off (the state shown in FIG. 2).

With the above configuration, the cartridge 1
1 is inserted in the direction of the solid line arrow shown in the figure against the helical spring 13, and at the set position shown in FIG.
The cartridge 1 is moved by the elastic force of the helical spring 12.
1 is always pushed in the direction of the dotted arrow shown in the figure, so if the lock of the set lever 13 is released by an appropriate means, the cartridge 11 will be automatically pushed out of the main body of the apparatus.

[Effect of idea]

Since the cartridge insertion/removal device for the FDD device of this invention is constructed as described above, the set lever and spiral spring can be attached extremely easily.
In addition, since the number of required parts used can be reduced, there is an effect that the device can be made at a correspondingly low cost.

[Brief explanation of the drawing]

Figures a and b in Figure 1, a and b in Figure 2 are a plan view and a side view of essential parts showing an embodiment of the cartridge insertion/removal device of the FDD device of this invention, and a and b in Figure 3.
1 is a plan view and a side view showing main parts of a conventional example. In the figure, 11 is a cartridge, 12 is a spiral spring, 13 is a set lever, 13a is a mounting part, 1
3b is an engaging portion, 13c is a locking protrusion, 14 is a fixed shaft, and 15 is a substrate.

Claims (1)

[Scope of utility model registration request] A set lever that locks the cartridge at a predetermined insertion position has an attachment part for a helical spring for returning the cartridge, which is rotatably inserted into a fixed shaft installed on the board of the main body of the device, and a set lever that locks the cartridge at a predetermined insertion position. A locking part is integrally provided with an engaging part that abuts against the tip thereof, and also allows the insertion part in the state of a helical spring to be inserted into the mounting part, and acts to prevent it from coming off in a state where the spring pressure is applied after insertion. A cartridge insertion/ejection device for an FDD device characterized by an integrally protruding protrusion.