JP2003090299A - Finger guard with filter for fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a finger guard with a filter for a fan preventing contact of a user and the entry of dust to a rotating portion of the fan used for cooling office automation apparatus, saving a space, and facilitating removing of the finger guard. SOLUTION: At each center portion of right and left sides of an upper finger guard 37, projections 40a, 40b fitted in recessed portions 41a, 41b formed at center portions of the right and left sides of a frame wall 35 in a base body 34 are respectively provided. By taking up the projections 40a, 40b between fingers, locking of depressed portions 39a, 39b by upper and lower locking pieces 38a, 38b in the frame wall 35 is released, and the upper finger guard 37 can be removed from the base body 34. In regard to the base body 34 of a finger guard 30 integrated on a front surface of a fan casing 11, the exterior measurements of the upper finger guard 37 can be stored.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a finger guard with a fan filter for preventing user's contact and dust from entering a rotating portion of a fan used for cooling OA equipment.

[0002]

2. Description of the Related Art In general, OA equipment such as office computers, personal computers, and peripheral equipment such as printers are equipped with a housing of an equipment in order to prevent the electronic circuits inside the equipment and each drive unit from being heated to a high temperature. Fans for cooling are installed on the back and sides.

The cooling fan is integrally provided with a finger guard with a fan filter for preventing the user's contact with the rotating part of the fan and the ingress of dust on the side facing the outside when the fan is attached to the equipment. Is provided for the purpose.

FIG. 3 is a diagram showing the structure of a conventional finger guard with fan filter 10 (first example). FIG. 3A is a front view thereof and FIG. 3B is a side view thereof.

In FIG. 1, reference numeral 11 denotes a box-shaped fan housing having a substantially square front surface, and a fan 1 for generating an air flow in the front-rear direction in the center of the fan housing 11.
Two are provided.

Finger guard with fan filter 1
0 is attached from the front side of the fan casing 11 by screws 13a to 13d located at the four corners thereof, and the base body 14 of the finger guard 10 is integrated with the front face of the fan casing 11 by these screws 13a to 13d. Fixed.

The base 14 of the finger guard 10 is
A frame wall 15 for keeping a certain depth in the outer peripheral portion
The sponge filter 16 is housed and arranged inside the base 14 surrounded by the frame wall 15.

Then, an upper finger guard 17 having a shape and dimension along the inside of the frame wall 15 of the base 14 is fitted so as to sandwich the filter 16 with the base 14.

The upper finger guard 17 has a base 14
Corresponding to the respective locking pieces 18a to 18d that are provided inwardly at four locations on the upper, lower, left, and right sides of the frame wall 15 of
The upper finger guard 17 is fixed by locking the recessed portions 19a to 19d formed at four positions on the upper, lower, left and right sides.

As described above, the conventional finger guard with a filter 10 attached to the fan casing 11 is used.
In the (first example), when the filter 16 is actually attached to an OA device for use, the filter 16 needs to be replaced as appropriate because the filter 16 is clogged with dust.

Then, the finger guard 10 (first
In the example), when removing the upper finger guard 17 to replace the filter 16, for example, by inserting a rod-like body into the slit portion of the upper finger guard 17 and pulling it up, the locking piece 18a of the frame wall 15 is removed.
The engagement of the depressions 19a to 19d by 18d to 18d is released, and the upper finger guard 17 is removed from the base 14.

Therefore, it is difficult to remove the upper finger guard 17, and the upper finger guard 17 may be broken depending on how to insert or pull up the rod-shaped body with respect to the slit portion.

FIG. 4 is a diagram showing the structure of a conventional finger guard with fan filter 10 '(second example).

In the conventional finger guard with fan for filter 10 '(second example), the shape and dimensions of the finger guard 20 are different from those of the first example shown in FIG. Upper finger guard 2
The engaging pieces 22a to 22d provided at four positions on the upper, lower, left and right sides of the outer frame 21 of 0 are fitted so as to cover from the outside of the base 14.

Therefore, the finger guard 10 '
In the (second example), the upper finger guard 20 can be easily removed from the base 14 by holding the outside and pulling up the entire body. However, on the other hand, the outer dimension exceeds the outer dimension of the fan housing 11 by a dimension d corresponding to the thickness of the outer frame 21 of the upper finger guard 20, and O
The installation space for equipment A etc. becomes large.

[0016]

As described above, the conventional finger guard 10 with a filter for a fan shown in FIG. 3 is used.
In the (first example), there is a problem that it is difficult to remove the upper finger guard 17, and the finger guard with filter 10 'for the conventional fan shown in FIG.
In the example, there is a problem that a large installation space is required.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a finger guard with a filter for a fan, which is space-saving and allows the upper finger guard to be easily removed. To do.

[0018]

That is, a finger guard with a filter for a fan according to the present invention is a finger guard base which is integrated on one surface side of a fan casing with the same outer dimensions, and the finger guard. And an elastic filter disposed in a space surrounded by a frame wall forming the outer periphery of the base body, and at least the frame wall of the base body facing at least 2
A locking piece provided at a location toward the inner side of the frame wall, and an outer dimension along the inner side of the frame wall of the base body, and fitted into the base body frame wall from above the filter. At least two locations on the outer periphery are provided on the upper finger guard that is retained by the retaining piece, and at two locations on the opposite side of the outer periphery of the upper finger guard that project at a height corresponding to the thickness of the frame wall of the base body. And a protrusion formed on the frame wall of the base body corresponding to the position of the protrusion of the upper finger guard. When the upper finger guard is fitted inside the base body frame wall and locked. The upper finger guard is disengaged from the locking piece of the frame wall of the base body by picking up the two projections.

In such a finger guard with a filter according to the present invention, the above-mentioned finger guards with filters are fitted at two locations on the opposite side of the outer circumference of the upper finger guard fitted along the inside of the base frame wall of the finger guard. By providing the projections that fit into the recesses formed at the two opposing positions of the base frame wall, the projections can be picked up and the upper finger guard can be removed from the base.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 shows a finger guard 3 with a fan filter according to a first embodiment of the present invention.
It is a figure showing the structure of 0, the figure (A) is the front view, and the figure (B) is the side view.

In the figure, reference numeral 11 denotes a box-shaped fan housing having a substantially square front surface, and a fan 1 for generating an air flow in the front-rear direction in the center of the fan housing 11.
Two are provided.

Finger guard with fan filter 3
0 is attached from the front side of the fan casing 11 by screws 33a to 33d located at the four corners thereof, and the base 34 of the finger guard 30 is integrated with the front face of the fan casing 11 by these screws 33a to 33d. Fixed.

The base 34 of the finger guard 30 is
A frame wall 35 for maintaining a certain depth in the outer peripheral portion
The sponge-like filter 36 is housed and arranged inside the base 34 surrounded by the frame wall 35.

Then, an upper finger guard 37 having a shape dimension along the inside of the frame wall 35 of the base 34 is fitted so as to sandwich the filter 36 with the base 34.

The upper finger guard 37 has a base 34.
In correspondence with each of the locking pieces 38a, 38b projecting inward at each one of the upper and lower two sides of the frame wall 35 of
The upper finger guard 37 is fixed by locking the recesses 39a and 39b formed at the upper and lower two sides, respectively.

The right and left 2 of the upper finger guard 37
Protrusions 40a and 40b having substantially the same height as the thickness of the frame wall 35 of the base body 34 are provided at the respective center positions of the sides, and the recesses 41a and 41b are formed at the centers of the corresponding frame walls 35.
It is a structure that fits in.

In the thus configured finger guard 30 with a filter for a fan according to the first embodiment, when the finger guard 30 with a filter is actually attached to an OA device for use, the filter 36 is clogged with dust. The filter 36
Need to be replaced as appropriate.

In the finger guard 30, when the upper finger guard 37 is removed to replace the filter 36, the upper finger guard 37 is removed.
By picking up the protrusions 40a and 40b provided on both the left and right sides of the upper and lower sides of the frame wall 35,
The recesses 39a, 39b are unlocked by b, and the upper finger guard 37 is removed from the base 34.

Therefore, according to the finger guard 30 with a filter for a fan of the first embodiment having the above-mentioned structure, the upper finger guard 37 is provided at the center position of each of the left and right sides of the upper finger guard 37 at each of the left and right sides of the frame wall 35 of the base 34. Protrusions 40a, 40b fitted in the recesses 41a, 41b formed at the central position
By picking up the protrusions 40a and 40b,
The upper finger guard 37 is detached from the base 34 by releasing the engagement of the depressions 39a, 39b by the upper and lower engagement pieces 38a, 38b in the frame wall 35, and therefore the upper finger guard 37 can be replaced when replacing the filter 36. It will be very easy to remove.

Further, since the outer dimensions of the upper finger guard 37 can be accommodated in the base 34 of the finger guard 30 integrated on the front surface of the fan housing 11, space can be saved and it can be used for OA equipment and the like. The degree of freedom in mounting can be improved.

In the finger guard 30 with a filter for a fan according to the first embodiment, the engaging portions of the upper finger guard 37 with respect to the base body 34 are provided at upper and lower one locations on the frame wall 35, that is, a total of two locations. However, as will be described in the fan guard with filter for fan 30 ′ of the second embodiment, the structure is provided at each of two left and right positions on the frame wall 35, that is, a total of six positions, and the protrusions 40 a, 40 b. Not only the removal operability by picking up but also the locking and holding performance may be improved.

(Second Embodiment) FIG. 2 shows a finger guard 3 with a filter for a fan according to a second embodiment of the present invention.
It is a front view which shows the structure of 0 '.

In the finger guard with filter for fan 30 'of the second embodiment, the same components as those in the finger guard with filter for fan 30 of the first embodiment are designated by the same reference numerals and their description is omitted. Omit it.

That is, in the finger guard with a filter for a fan 30 'according to the second embodiment, inwardly on both sides of the central recesses 41a, 41b at two positions on each of the left and right sides of the frame wall 35 in the base 34. Locking piece 3 protruding from the
8c1, 38c2, 38d1, 38d2 are provided. Then, on both sides of the protrusions 40a, 40b on the left and right sides of the upper finger guard 37 corresponding thereto, the frame wall 3 is also provided.
5, the locking pieces 38c1, 38c2, 38d1, 38
Recesses 39c1, 39c2, 39d locked to d2
1, 39d2 are formed.

With this structure, the upper finger guard 37 is engaged with the base body 34 at a total of six positions, one on the upper and lower sides of the frame wall 35 and two on the left and right sides. It is possible to improve not only the dismounting operability by picking up but also improving the locking and holding performance of the upper finger guard 37 with respect to the base body 34.

[0037]

As described above, according to the present invention, it is possible to provide a finger guard with a filter for a fan, which saves space and can easily remove the upper finger guard.

[Brief description of drawings]

FIG. 1 is a diagram showing a structure of a finger guard with a fan filter 30 according to a first embodiment of the present invention, in which FIG. 1 (A) is a front view thereof and FIG. 1 (B) is a side view thereof.

FIG. 2 is a front view showing the structure of a finger guard with a fan filter 30 ′ according to a second embodiment of the present invention.

3A and 3B are views showing a structure of a conventional finger guard with fan filter 10 (first example), in which FIG. 3A is a front view thereof and FIG. 3B is a side view thereof.

FIG. 4 is a view showing the structure of a conventional fan guard with filter for finger 10 '(second example).

[Explanation of symbols]

11 ... Fan housing 12 ... fans 30,30 '... Finger guard with fan filter 33a to 33d ... screws 34 ... Base 35 ... Frame wall 36 ... Filter 37 ... Upper finger guard 38a-38d2 ... Locking piece 39a-39d2 ... Recessed portion 40a, 40b ... Protrusion 41a, 41b ... Recesses

Front page continuation (51) Int.Cl. ⁷ Identification code FI theme code (reference) G06F 1/20 F04D 25/08 303 // F04D 25/08 303 G06F 1/00 360B 360C F term (reference) 3H022 AA03 BA01 BA07 CA49 DA00 DA04 DA07 3H032 CA10 3H034 AA02 AA14 BB02 BB08 BB20 CC03 CC07 DD02 DD12 DD20 DD26 DD28 DD30 EE05 EE12 EE17

Claims (3)

[Claims] 1. A finger guard base which is integrated on one surface side of a fan casing with the same outer dimensions, and is arranged in a space surrounded by a frame wall forming an outer periphery of the finger guard base. An elastic filter, locking pieces provided inwardly of the frame wall at least at two opposite locations of the frame wall of the base, and outer dimensions along the inside of the frame wall of the base, An upper finger guard fitted into the inside of the base frame wall from above the filter and at least two positions on the outer periphery of which are locked to the locking pieces, and two positions on the opposite side of the outer periphery of the upper finger guard, A protrusion provided so as to project at a height corresponding to the thickness of the frame wall of the base body, and two protrusions of the upper finger guard formed at two opposing positions on the frame wall of the base body. Guard base A recess into which the two projections are fitted when fitted into the inside of the wall and locked, and the upper finger guard has a locking piece on the frame wall of the base body by picking up the two projections. The finger guard with a filter for the fan, which is characterized by being removed from the. 2. The locking piece is provided above and below the frame wall of the base body.
The protrusions are provided at positions on the inner side of the frame wall, and the protrusions are provided at two positions on the left and right on the outer periphery of the upper finger guard so as to project at a height according to the thickness of the frame wall of the base body. Characteristic finger guard with fan filter. 3. The locking piece is provided on each of the upper, lower, left and right sides of the frame wall of the base body toward the inside of the frame wall, and the protrusions are provided at two positions on the outer circumference of the upper finger guard, left and right or upper and lower. A finger guard with a filter for a fan, characterized in that it is provided so as to project at a height corresponding to the thickness of the frame wall of the base body.