JPH067772Y2 - Filter device for dust collection - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a filter device for collecting dust.

[Prior Art] FIG. 5 shows an ordinary small Winchester type hard disk drive device (hereinafter referred to as HD) having a dust collecting filter device.
It is a top view showing an example of the whole composition of (D). In this device, the swing arm (3) fulcrums the shaft center of the bearing (4) through the steel band (2) wound around the pulley (1) provided on the output shaft of the motor that rotates forward and backward in a predetermined cycle. As an arc motion. The read / write head (5) provided at the tip of the swing arm (3) seeks on the surface of the disk (6) at a minute interval of about 0.3 μm (SEE).
K) It works. Base frame (9) and top cover (11)
The inside of the HDD surrounded by is closed. In addition, in order to remove dust, rust, oil, etc. generated by rubbing of the movable part generated inside the disc (6)
The high-speed air flow associated with the rotation of the disk is used to maintain the cleanliness of class 100 or less by the air filter (7) in the filter guide (8) provided on the outer peripheral portion of the disk (6).

The conventional air filter (7) is housed in a molded plastic case, and has a filter efficiency of dust removal efficiency to the extent that it is used in a clean room or a clean bench. Also, air filter (7)
Is adhered to the inner wall of the filter guide (8) as shown in Fig. 2 in order to prevent scattering of fibers in the periphery and to efficiently obtain the pressure difference between the inlet and outlet of the filter. Each filter is attached and detached with a screw (10) together with the filter guide (8).

[Problems to be Solved by the Invention] However, in the conventional filter device as described above,
Each time it is replaced due to clogging of the air filter (7), it is attached and detached together with the filter guide (8), and the removed air filter (7) including the filter guide (8) will be discarded. There was a problem that replacement would be expensive.

The present invention has been made to solve the above problems, and an air filter is replaced by a simple attachment / detachment work to obtain a dust collecting filter device that can reduce the cost at the time of replacement. It is intended.

[Means for Solving the Problems] In a dust collecting filter device according to the present invention, a mounting base having a mounting portion for a base of a housing is provided at a lower portion, an elastic arm portion is provided at an upper portion, and a central portion is provided at a central portion. It has a filter guide having a hollow portion and an air filter whose peripheral portion is hardened by heat processing, and the air filter is inserted into the hollow portion from a slit provided in the filter guide.

Further, protrusions are provided on both ends of the upper surface of the arm portion.

[Operation] Since the air filter of the present invention has a hardened peripheral portion, there is no scattering of fibers when it is attached to or detached from the filter guide, and the filter guide is fixed with an appropriate pressing force by the cover of the housing or the like. Therefore, it is possible to sufficiently withstand the wind pressure generated by a high-speed airflow or the like.

Also, when the filter guide is attached to the base of the housing,
The protrusion provided on the arm portion comes into contact with the housing, and the arm portion is elastically deformed by the reaction force to more securely attach the arm portion.

[Embodiment] The dust collecting filter device according to the present invention has the following features. [1] Regardless of the structure in which the air filter (7) described in the conventional example is attached to the inner wall of the filter guide (8) by adhesion, The filter guide (8) is provided with a slit for mounting the air filter (7), and the air filter (7) is fixed by the elasticity of the slit of the resin forming the filter guide (8).

[2] By heating and deforming the entire circumference of the air filter (7) to cure it, scattering of filter fibers is prevented and the air filter (7) is provided in the slit of the filter guide (8).
Easy to insert and remove. An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a filter guide (8) of a filter device for collecting dust according to an embodiment of the present invention. FIG. 1 (a) is a front view, (b) is a top view, (c) is a side view, and (d). ) Is a bottom view. In the figure, (12) is a box-shaped body having a cavity (14), and a plurality of ribs (13) are projectingly provided on the outer surface of the rear vertical wall for reinforcement. (15) and (15a) are mounting bases provided on both sides of the lower end of the body portion (12), and one of the mounting bases (15) has a cutout portion (16).
However, the other mounting base (15a) is provided with a toothed hole (17) through which a screw is elastically inserted. (18), (18a) is the body
Arms provided on both sides of the upper end of (12), and protrusions (19) and (19a) are formed on the outer end of the upper surface, respectively. (20)
Is a slit provided so as to communicate with the front portion and the upper and lower sides of the body portion (12), and a groove portion (21) continuous with this slit (20) is formed on the inner surface of the rear vertical wall.

The filter guide (8) as described above is integrally molded of an elastic material such as synthetic resin.

FIG. 2 is a front view and a side view of the air filter (7). The air filter (7) according to the present invention, after molding, further heats and presses the peripheral portion (7a) indicated by diagonal lines,
It is the one that is thermally deformed and cured.

The case of attaching the dustproof filter device according to the present invention having the above-mentioned configuration to the HDD described in the above-mentioned conventional example will be described as an example. Hardened perimeter (7) of air filter (7)
Apply (a) to the inlet (20a) of the slit (20) of the filter guide (8) as shown in FIG. 1 (b) and press in the direction of the arrow to fit the side end into the groove (21). Press into. At this time, the air filter (7) is attached to the cavity (1) of the filter guide (8).
Located in 4). In this way the air filter (7)
The filter guide (8) to which is attached is placed on the base frame (9) shown in the conventional example as shown in the perspective view of FIG. 3, and the notch (16) is provided in the base frame (9). It is fitted to the mounting projection (9a), and the screw (10) is inserted into the toothed hole (17) and fixed. As shown in FIG. 4, the filter guide (8) after being fixed has protrusions (19), (19) provided on the arms (18), (18a).
a) contacts the lower surface of the top cover (11), and the reaction force causes the arms (18), (18a) to elastically deform, and the filter guide
It is interposed between the base frame (9) and the top cover (11) in a state in which an appropriate force that withstands the high-speed air flow pressure acting on (8) and the air filter (7) is applied.

When the above filter guide (8) is attached to the HDD, if the mounting position is such that the direction of the surface of the air filter (7) coincides with the rotation center of the disk (6), the collected air will be collected. Most efficiently the cavity of the filter guide (8)
Go through (14).

[Advantages of the Invention] As described above, according to the present invention, the air filter is press-fitted and installed in the slit provided in the filter guide, and the filter guide after the air filter is installed is kept at a proper pressing force. Since the air filter is configured to be interposed between the frame and the top cover, the air filter can be easily attached and detached, and the cost for replacement or the like can be reduced.

Further, by providing the protrusion on the arm portion of the filter guide, the air guide can be more reliably attached to the housing or the like.

[Brief description of drawings]

FIGS. 1 (a), (b), (c) and (d) are a front view, a top view, a side view and a bottom view showing the shape of a filter guide according to an embodiment of the present invention, and FIG. FIG. 3 is a front view and a side view of the air filter according to FIG. 3, FIG. 3 is a perspective view showing a state where the air filter is inserted in the filter guide of FIG. 1, and FIG. 4 is a state in which the filter guide is interposed between the base frame and the top cover. FIG. 5 is a plan view of a normal small Winchester type hard disk drive device, and FIG. 6 is a perspective view showing the structure of a conventional filter guide and air filter. (7): Air filter, (7a): Peripheral part, (8): Filter guide, (12): Body part, (14): Hollow part, (15), (15a): Mounting base, (18), (18a): Arm, (19), (19a): Protrusion, (2
0): Slit.

Claims (2)

[Scope of utility model registration request] 1. A filter device provided in the housing for removing dust, rust, oil, etc. generated in the housing, wherein a mounting base having a mounting portion to a base of the housing is provided at an upper portion and elastically provided at an upper portion. An air filter having a hollow portion formed in the central portion and an air filter having a peripheral portion cured by heat processing, and the air filter being provided in the hollow portion from a slit provided in the filter guide. A filter device for collecting dust, wherein the filter device is inserted. 2. The dust collecting filter device according to claim 1, wherein each of the arm portions is provided with a protruding portion on an outer end portion of an upper surface thereof.