JP2001079447A - Air cleaning apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive air cleaning apparatus capable of certainly cutting off power when a front panel is attached incompletely only by a single safety switch. SOLUTION: In an air cleaning apparatus, only one safety switch 20 is provided to the left-hand edge part of an apparatus body casing 15 and a front panel 3 is provided to the front surface 1a of the apparatus body casing 15 so as to be slid and moved up and down. At a time of the mounting of a front panel 3, the vertical ribs 52 of the front panel 3 are fitted in the vertical grooves 51 of the apparatus body casing 15 to guide the panel 3. The pawl 56 of the front panel 3 and the groove forming member of a front casing 9 forming a groove 58 in which the pawl 56 is fitted are provided. The pawl 56 is fitted in the groove 58 in such a state that the front panel 3 is moved along the front surface 1a. The pawl 56 comes into contact with the upper surface of the groove forming member in such a state that the front panel 3 is floated to prevent the mounting of the front panel 3. When the front panel 3 is warped, the vertical ribs 52 of the front panel 3 come into contact with the projections of the front casing 9 to prevent the mounting of the front panel 3. By this constitution, the above single safety switch 20 is used to ensure safety inexpensively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air cleaning device.

[0002]

2. Description of the Related Art An air purifying apparatus, for example, a floor-standing type used indoors, requires maintenance.
A detachable front panel is provided on the front surface of the main body casing, and a safety switch is provided on the main body casing so that power is cut off with the front panel removed. For example, the safety switch is arranged on the right side edge of the front surface of the main body casing, and is operated by the back side portion of the right side portion of the front panel mounted opposite to this portion. Also,
The front panel is formed in a rectangular shape, and is mounted so that substantially the entire front panel is along the front surface of the main body casing. Then, in this state, the safety switch is operated and the power is supplied.

[0003]

However, in a state where the front panel is obliquely inclined, for example, the right portion of the front panel is along the front surface of the main body casing, and the left portion of the front panel is positioned from the front surface of the main body casing. It may be worn while protruding away and forward. In such a mounting state, the right portion of the front panel is located at a position operable with respect to the safety switch, so that the safety switch is operated. It is assumed that energization is not interrupted.

In order to prevent such a situation, two safety switches are provided so as to correspond to the left and right edges of the front panel, respectively, so that the structure of the air cleaning device is complicated, and as a result, the cost is reduced. Was the cause of the rise. Therefore, an object of the present invention is to solve the above-described technical problem, and to use only a single safety switch, to reliably cut off the power supply when the front panel is in an incompletely mounted state, and to reduce the cost of air. It is to provide a cleaning device.

[0005]

According to the first aspect of the present invention, there is provided a front panel which is slid downward along the front surface of a main body casing to be mounted on the main body casing, and which slides the front panel. And a pair of locking means for preventing the left and right edges of the mounted front panel from being detached from the front surface of the main body casing, and the left and right edges of the front panel of the main body casing. The only safety switch that is arranged and pressed by the front panel to release the cutoff of electricity, and the edge of the front panel near the safety switch runs along the front of the main body casing so that the safety switch can be operated. When the front panel is pushed down with the edge of the front panel remote from the safety switch floating from the front of the main unit casing, the front panel To provide an air cleaning apparatus, characterized in that it comprises a diagonal attachment preventing means for preventing depression of the front panel in front of operating a switch.

According to the present invention, it is possible to prevent the front panel from operating the safety switch when the front panel in which the edge opposite to the safety switch floats from the front surface of the main body casing in an oblique state is slidably mounted. Can be prevented. On the other hand, even if the front panel is mounted with the edge on the same side as the safety switch floating, there is no safety problem. Therefore, safety can be ensured at a low cost with only one safety switch.

According to a second aspect of the present invention, in the air purifying apparatus according to the first aspect, the oblique mounting preventing means is provided on the front panel and the main body casing and abuts each other to prevent the oblique mounting of the front panel. A pair of abutment members, one abutment member is formed of a claw, and the other abutment member is fitted with the claw only when the edge of the front panel on the safety switch side is along the front surface of the main body casing. An air purifying device is provided, comprising a groove forming member that forms a groove that can be formed, wherein the contact member of the front panel is disposed closer to the safety switch than the center of the front panel in the left-right direction.

According to the present invention, when the front panel is in the oblique state, the pawl and the groove forming member abut against each other, so that the front panel is prevented from being pushed down, and as a result, the oblique mounting of the front panel is prevented. Is done. In a state where the front panel is along the front surface of the main body casing, the claws are fitted into the grooves, so that the front panel can be pressed down, and as a result, the front panel is securely mounted. In addition, the oblique mounting prevention means can have a simple configuration of a claw and a groove forming member.

In addition, the oblique mounting preventing means allows the front panel to be defined at a regular position with respect to the main body casing at a position close to the safety switch by fitting the claw into the groove.
Electricity can be reliably supplied by the safety switch, and the state of the operable device can be secured. The invention according to claim 3 is the invention according to claim 2.
In the air purifying device described in the above, the oblique mounting prevention means, the edge of the front panel on the opposite side to the safety switch, and a pair of auxiliary contact members provided on the corresponding body casing portion and contacting each other, respectively. When the front panel is pushed down while the above-mentioned claw is fitted in the groove and the edge of the front panel opposite to the safety switch is floated from the front surface of the main body casing due to the warpage of the front panel, A pair of auxiliary contact members abut each other before the front panel operates the safety switch, thereby preventing the front panel from being pushed down.

According to this invention, when the front panel is warped, the auxiliary contact member can prevent the oblique mounting even if the claw and the groove forming member cannot prevent the oblique mounting. Therefore, safety can be reliably ensured. According to a fourth aspect of the present invention, in the air purifying apparatus according to the third aspect, the locking means includes a vertical rib having a predetermined length, which is provided on the front panel and engages with a vertical groove on a side surface of the main body casing. The pair of auxiliary contact members includes the vertical rib, and a projection formed on a front surface of the main body casing and abutting on a lower portion of the vertical rib, to provide an air purifying apparatus.

According to the present invention, since the vertical rib of the locking means also serves as the auxiliary contact member, the structure can be simplified.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An air purifying apparatus according to one embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an exploded perspective view of an air cleaning device according to one embodiment of the present invention. In addition,
In the following description, the description of the direction is based on the state when viewed from the front. In the air purifier, the frontmost part of the air purifier main body 1 is covered by a front panel 3 provided with a suction grill 2. Air is sucked into the inside of the air purifier main body 1 through the suction grill 2.

An accommodation recess 1b is formed in the front surface 1a of the air purifier main body 1. A pre-filter 4 for removing relatively large dirt and dust is provided in the accommodation recess 1b.
In addition, a filter case 7 in which an ionization unit 5 for discharging to charge the dirt particles and a roll filter 6 as a dust collection unit is detachably housed. Further, a honeycomb-shaped photocatalyst carrier 8 having a photocatalyst for purifying contaminants upon irradiation of light such as ultraviolet rays carried on the surface or inside thereof is detachably provided in the accommodation recess 1b on the back side of the filter case 7. Is housed in One or more lamps 13 for irradiating the photocatalyst carrier 8 with light are attached.

The front surface 1a of the main body 1 of the air cleaning device is constituted by a front casing 9. An accommodation recess 1 b is formed in the front casing 9. Also, the front casing 9
An operation panel 11 having various operation switches and various display units is provided below the computer. A main casing 15 of the air purifying apparatus main body 1 includes a front casing 9 and a rear casing 10 attached to a rear portion of the front casing 9.
The front casing 9 and the rear casing 10 are combined in a box shape, and an air passage through which air flows is formed therein.

Although not shown, an opening is formed in a substantially central portion of the housing recess 1b. A blower fan and a motor for driving the blower fan are mounted in the opening.
In the present air cleaning device, the room air sucked from the suction grill 2 is purified through the pre-filter 4, the ionization unit 5, the roll filter 6, and the photocatalyst carrier 8, then passes through the opening, and is blown by the blower fan. It is blown out from a blowout louver (not shown) provided on the upper part of the cleaning device main body 1.

The front panel 3 is removably attached to the front surface 1a of the air purifier main body 1. By removing the front panel 3, maintenance such as cleaning of the pre-filter 4, the ionization section 5, the roll filter 6, and the like can be performed. With the front panel 3 removed, the pre-filter 4 is located at the forefront and exposed,
An ionization unit 5 is disposed behind the ionization unit. After the maintenance, when the front panel 3 is attached to the air purifying apparatus main body 1, the operation becomes possible again. Further, a safety switch 20 (see FIG. 2) is provided in the air purifying apparatus main body 1 so that the operation cannot be performed unless the front panel 3 is attached to a proper position.

The safety switch 20 has a push button 21 which can move forward and backward in the front-rear direction. The operation of the push button 21 opens and closes an internal circuit. The push button 21 is urged by an urging means (not shown) such as a spring so as to be in a protruding state, and is autonomously returned from a pressed state to a protruded state. The safety switch 20 is disposed inside the air cleaning device main body 1,
The push button 21 is operated through a slit 23 formed in the front surface 1a. That is, when the front panel 3 is attached to a regular position, the operation rib 22 erected on the back surface of the front panel 3 moves up and down, is inserted into the slit 23, and , Whereby the safety switch 20 can be operated. The safety switch 20 is connected to a control circuit that controls the operation of the air cleaning device. When the push button 21 of the safety switch 20 is pressed down and the internal circuit is closed, energization of the control circuit, the ionization unit 5, the blower fan, the lamp 13, and the like is permitted. When the front panel 3 is removed, the push button 21 of the safety switch 20 is in a protruding state, the internal circuit is opened, and the control circuit, the ionization unit 5, the blower fan, and the lamp 13 are opened.
And so on.

Incidentally, the front panel 3 may not be mounted at a regular position on the front surface 1a. For example, the right edge 32 or the left edge 31 of the front panel 3 is
This is the case when it comes to a state where it floats. In such a case, it is assumed that a user who is unfamiliar with his / her hand inserts a hand through a gap formed between the front surface 1a and the front panel 3. Even if such a situation occurs, two safety switches have conventionally been provided in order to shut off the current and ensure safety. This is because, when only a single safety switch is used, even when the front panel 3 is floating from the front surface 1a, it is assumed that the above-described push button 21 is depressed and the energization is permitted.

In the air purifying apparatus according to the present embodiment, even if the front panel 3 is not mounted at a regular position, the safety can be secured at a low cost with only one safety switch 20. By using only a single safety switch 20, the energization is cut off to ensure safety. The details will be described below. First, each part will be described with respect to its normal position. Please refer to FIG. 2 and FIG.

The front surface 1a of the front casing 9 is
And a stepped surface 44 extending along the rear end portion, and a frame-shaped main front surface 45 projecting forward with respect to the stepped surface 44. The step surface 44 is formed along an outer peripheral edge surrounding the main front surface 45 in a front view. The accommodation opening 1b described above is formed inside the frame of the main front surface 45. Housing opening 1
b is formed in a substantially rectangular shape when viewed from the front. The lower half of the main front surface 45 projects forward with respect to the upper half. The lower half has a central portion where the operation panel 11 is provided, and a pair of extending portions extending upward from left and right ends of the central portion. The pair of extending portions extend upward along the left and right edges of the housing opening 1b. In the extension on the left side of the lower half,
A slit 23 is formed, and the safety switch 2 is
0 is arranged.

The left edge 41 of the front surface 1a is
a from the left edge to the vicinity of the left and right position where the left edge of the housing opening 1b is located, and includes the above-mentioned step surface 44 and the main front surface 45 in this area. . The same applies to the right edge. The side surface 1d of the front casing 9 has a main side surface 46 formed at a rear portion, and a fitting surface 47 which is connected to the main side surface 46 through the above-described step surface 44 and fits inside the side portion 34 of the front panel 3. have. The fitting surface 47 is formed one step deeper toward the center in the left-right direction with respect to the main side surface 46. Further, the fitting surface 47 and the main side surface 46 on both the left and right sides extend in the direction facing each other at the upper end, and form the upper surface of the front casing 9.

The front panel 3 has a front portion 33 on which the suction grille 2 is formed, a pair of side portions 34 extending rearward from left and right edges of the front portion 33, and a rear portion from an upper edge of the front portion 33. And an upper surface portion 35 extending toward the upper surface. The upper surface portion 35 and the pair of side surface portions 34 are continuously connected. In a state where the front panel 3 is mounted at a regular position on the front surface 1a, an upper surface portion 35 and a pair of side portions 34 of the front panel 3 are provided.
The rear edge and the step surface 44 of the front casing 9 are aligned (see FIG. 4). Also, the upper surface portion 35 of the front panel 3
Lower surface forms a top surface of the front casing 9.
It is placed on the part. The left and right fitting surfaces 47 of the front casing 9 are provided inside the pair of side surfaces 34 of the front panel 3.
Is fitted along. The front surface portion 33, the upper surface portion 35, and the pair of side surface portions 34 surround and cover the main front surface 45 of the front casing 9 and the housing recess 1b inside. The accommodation recess 1b is disposed immediately behind the suction grille 2. Further, a notch is provided near the lower end of the front portion 33, and the operation panel 11 is exposed forward from the notch.

The front panel 3 is locked to the front casing 9 by the locking mechanism at the above-mentioned regular position. The locking mechanism is
In order to lock the left and right ends of the upper part of the front panel 3 to the front surface 1a, the front casing 3 has a vertical groove 51 on the side surface 1d and a vertical rib 52 provided on the front panel 3. This vertical rib 52 engages with the vertical groove 51. The vertical rib 52 and the vertical groove 51 are provided as a pair on the left and right.

The vertical groove 51 is provided on the fitting surface 47 of the front casing 9.
Is formed at the top. The vertical groove 51 extends at a predetermined length in the vertical direction. The predetermined length is set corresponding to the regular position of the front panel 3 and extends below the lower end position of the vertical rib 52 of the front panel 3 at the regular position. The vertical groove 51 has a depth in the left-right direction and a width in the front-rear direction so that the engaging vertical rib 52 is inserted. Flute 5
The upper end of 1 is opened as an entrance for the vertical rib 52 to enter.

The vertical rib 52 is provided upright on the inner side of the side wall 34 of the front panel 3. The vertical rib 52 extends a predetermined length downward from the lower surface of the upper surface 35 of the front panel 3 along the side surface 34. The predetermined length of the vertical rib 52 is set corresponding to the predetermined length of the vertical groove 51. The vertical groove 51 and the vertical rib 52 function as a guide mechanism for guiding the front panel 3 to a regular position when the front panel 3 is mounted on the front surface 1a. That is, when the vertical ribs 52 are engaged with the vertical grooves 51, the front panel 3 can be easily slid downward while the front panel 3 is maintained along the front surface 1a.
Then, the front panel 3 reaches a regular position at the lower end in the sliding direction.

The vertical grooves 51 and the vertical ribs 52 are engaged with each other by sliding the front panel 3 downward along the front surface 1a of the front casing 9 so as to be mounted from the front surface 1a of the front casing 9. Left and right edges 3 of front panel 3
It functions as a pair of locking means for preventing the detachment of the first and the second to the front. In addition, the locking mechanism locks the lower portion of the front panel 3 to the front surface 1a.
A tongue 53 formed at the lower end of the front panel 3, a pair of protrusions 54 formed integrally with the front panel 3 on the left and right sides of the tongue 53, and a locking hole 55 into which the protrusion 54 fits. Lock hole 5
5 is a front casing 9 near the upper end of the operation panel 11.
Is formed in the part. Further, the tongue 53 enters the inside of the accommodation recess 1 b and engages with the front casing 9.

Further, the locking mechanism is provided for locking the upper portion of the front panel 3 near the center to the front surface 1a.
A claw 56 erected on the lower surface of the upper surface 35 of the
And a groove forming member 57 for forming a groove 58 into which the groove 58 can be fitted. The groove forming member 57 is provided on the front surface 1 a of the front casing 9, and is integrally formed at the upper end of the main front surface 45 so as to protrude forward. In addition, nail 5
The groove 6 may be provided on the front panel 3 by standing the front panel 6 upward on the front casing 9.

The claw 56 is located on the left side closer to the safety switch 20 than the center in the left-right direction of the front panel 3 (the center line CL in the left-right direction is shown in FIGS. 2 and 3) in front view. ing. In particular, the claw 56 is arranged in the leftmost area when the front panel 3 is divided into four equal parts in the left-right direction, and is arranged on the right side of the safety switch 20. Further, the groove forming member 57 is arranged at a position corresponding to the claw 56. That is, when viewed from the front, the groove forming member 57 is located closer to the safety switch 2 than to the center of the front casing 9 in the left-right direction.
It is arranged on the left side, which is the 0 side, and is particularly arranged in the leftmost region when the front panel 3 is divided into four equal parts in the left-right direction.

The groove 58 is formed by a hole extending in the vertical direction.
It is formed in a rectangular shape that penetrates the groove forming member 57 and is long in the left-right direction in plan view, and has a size that allows the claw 56 to enter. Claws 56
Is fitted in the groove 58, the claw 56 is locked by the groove forming member 57 which is a peripheral portion of the groove 58, and the front panel 3 is
The position in the left-right direction and forward is regulated. Also, in the present embodiment, the front panel 3 is prevented from being mounted diagonally. Here, the oblique mounting means the right and left edge portions 3 of the front panel 3.
The front panel 3 is mounted near the end in the sliding direction while the front panel 1 and 32 are inclined from the front surface 1a of the main body casing 15. In particular, the left edge 31 of the front panel 3 near the safety switch 20 runs along the front surface 1a of the main body casing 15 so that the safety switch 20 can be operated, and the right edge of the front panel 3 far from the safety switch 20. When the front panel 3 is pushed down with the portion 32 floating from the front surface 1a of the main body casing 15, the front panel 3
Is provided with an oblique mounting preventing means for preventing the front panel 3 from being pushed down before the safety switch 20 is operated.

The oblique mounting preventing means is provided on the front panel 3 and the main body casing 15 and is provided with the above-described claw 56 and the groove forming member 57 as a pair of abutting members which abut against each other to prevent the front panel 3 from being obliquely mounted. have. The groove forming member 57 has a portion that forms the peripheral edge of the groove 58 on the base side, and a plate-shaped portion in front of this portion. The position of the upper surface of the groove forming member 57 is set as follows. That is, when the front panel 3 is slid downward, at the position where the upper surface of the groove forming member 57 and the lower end of the claw 56 of the front panel 3 abut, the operation rib 22 of the front panel 3
Is located in front of the area where the safety switch 20 can be operated, and the front panel 3 cannot operate the safety switch 20. At this time, if the upper surface of the groove forming member 57 and the lower end of the claw 56 abut at least partially, sliding movement of the front panel 3 downward can be prevented (see FIG. 5).
The size and shape of the groove forming member 57 in a plan view are formed so as to be able to abut on the claws 56 of the front panel 3 in an oblique state, and the front panel 3 is mounted at a regular position. It is formed so as not to inhibit (see FIG. 6).

The groove 58 is formed so that the claw 56 can be fitted only when the left edge 31 of the front panel 3 on the safety switch 20 side is along the front surface 1a of the main body casing 15. At this time, the right edge portion 32 of the front panel 3 also normally follows the front surface 1a of the main body casing 15. By the way, the front panel 3 may be warped. In such a case, the claw 56 is fitted into the groove 58,
In addition, the right edge 32 of the front panel 3 on the side opposite to the safety switch 20 is moved by the warp of the front panel 3 so that the body casing 15
The front panel 3 may be pushed down while floating from the front surface 1a. In such a case, before the front panel 3 operates the safety switch 20, the right edge 32 of the front panel 3 opposite to the safety switch 20 and the right edge 32 of the front panel 3 so as to prevent the front panel 3 from being pressed down. The oblique mounting prevention means has a pair of auxiliary contact members 29 provided on the right side edge portion 42 corresponding to the corresponding main body casing 15 and contacting each other.

Referring to FIG. 7 and FIG. The pair of auxiliary abutment members 29 are formed by the right vertical ribs 52 on the front panel 3 described above.
And a projection 59 protruding from the front surface 1a of the main body casing 15. The protrusion 59 is formed at the upper right corner of the main front surface 45 of the front casing 9 and abuts against the lower portion of the vertical rib 52 so as to prevent the front panel 3 from entering an area where the safety switch 20 can be operated. ing. That is, when the front panel 3 is slid downward, at the position where the upper surface of the projection 59 abuts on the lower end of the vertical rib 52, the front panel 3 is located just before the area where the safety switch 20 can be operated. Is located and the safety switch cannot be operated.

Further, the projection 59 makes the front panel 3 face the front 1a.
Is formed in a curved surface shape so as to function smoothly as a guide member when being made to follow the fitting surface 47 of the front casing 9. The mounting operation of the front panel 3 will be described. First, as shown in FIG. 5, the upper part of the front panel 3 is made to approach the upper part of the main body casing 15, and the vertical ribs 52 are inserted from the upper ends of the vertical grooves 51 on both the left and right sides. At this time, the front panel 3 may be inclined so that the lower part thereof is more forward than the upper part. However, when the rear end edge of the front panel 3 is brought into contact with the step surface 44 of the front casing 9, the vertical groove 51 is formed. The vertical ribs 52 are located right above the, which facilitates operation.

Then, the rear edge of the front panel 3 is brought into contact with the step surface 44 of the front casing 9, and the front panel 3 is slid downward along the front surface 1a while maintaining that state. (See arrow DD). Front panel 3 is front 1a
The claw 56 is autonomously fitted into the groove 58 while sliding downward while maintaining the state along the front panel 3, and then the lower surface of the upper surface 35 of the front panel 3 is
To reach the lower end position, which is a regular position.
As shown in FIG. 4, in the normal position, even if the front panel 3 is pulled forward or pushed right and left by the locking means, it does not come off, and is securely held in the normal position.

In the normal position, the operation rib 2 on the front panel 3
2 operates the push button 21 of the safety switch 20,
Power can be supplied. The position of the operation rib 22 at which the safety switch 20 can be operated is set within a predetermined range in the vertical direction with the position of the push button 21 as a center, and is also set within a predetermined range in the front-rear direction. For example, front panel 3
4 is a vertical position of a predetermined portion C of the operation rib 22 (a portion which is in contact with the push button 21 at a regular position).
The range SR shown in FIG.

When the user tries to mount the front panel 3 in an oblique state (the front panel 3 in this state is indicated by a dashed line in FIG. 5).
FIG. 6 shows a dashed line and a solid line. In the middle of sliding the front panel 3 downward, the above-mentioned claw 56 comes into contact with the groove forming member 57. Then, the front panel 3 cannot be moved below the contact position, the mounting of the front panel 3 is prevented, and the safety switch 20 is not operated. Here, the oblique state includes a state in which only the right vertical groove 51 and the vertical rib 52 are disengaged, a state in which only the left vertical groove 51 and the vertical rib 52 are disengaged, Attachment is prevented in the disengaged state.

When the warped front panel 3 is mounted in an oblique state, as shown in FIGS. 7 and 8,
During the downward sliding movement, the above-described vertical ribs 52 come into contact with the projections 59. Then, the front panel 3 cannot be moved below the contact position, the mounting of the front panel 3 is prevented, and the safety switch 20 is not operated. In the case where the warped front panel 3 is attached in an oblique state, the above-mentioned claw 5 is
6 passes in front of the groove forming member 57,
Although the case where the front panel 3 is located at the lower end position in the sliding direction is also assumed in the case where the front panel 3 is located at the lower end position in the sliding direction, in this case, the operation rib 22 is excessively forward with respect to the safety switch 20. As the push button 21 cannot be operated because of the approach, no power is supplied and there is no problem.

The removal of the front panel 3 may be performed in the reverse of the mounting operation described above, and the front panel 3 may be slid upward. When the vertical rib 52 comes out of the upper part of the vertical groove 51, the front panel 3 can be removed from the front casing 9. In the air purifying apparatus of the present embodiment, the front panel 3 is of a vertical slide type along the front surface 1a of the main body casing 15, so that the front panel 3 is hardly inclined at the time of the mounting operation. Further, once mounted, the state can be reliably maintained by the lock means.

In particular, as shown in FIGS. 5 and 7, the above-mentioned oblique mounting preventing means causes the right side edge 32 opposite to the safety switch 20 to be in an oblique state floating above the front surface 1a of the main body casing 15. The operation of the safety switch 20 can be prevented before the slide 3 is mounted in an oblique state in which the slide 3 is mounted. On the other hand, even if the front panel 3 is pushed down while the left edge 31 on the same side as the safety switch 20 is floating, the operation rib 22 does not reach the push button 21 of the safety switch 20 and is not energized. No problem. Further, since only one safety switch 20 is required, the structure can be simplified, and the cost of parts can be reduced. As a result, the cost of the air cleaning device can be reduced.

The oblique mounting prevention means comprises a claw 56 and a groove forming member 57, and a vertical rib 52 and a projection 59.
It is composed of Thereby, a simple structure can be obtained. In addition, the oblique mounting prevention means constituted by the claw 56 and the groove forming member 57 is configured such that the claw 56 is fitted into the groove 58,
Since the front panel 3 can be defined at a regular position with respect to the main body casing 15 at a position closer to the safety switch 20 than at the center in the left-right direction, the safety switch 20 can reliably energize and secure the state of the operable device. .

As shown in FIGS. 7 and 8, when the front panel 3 is warped, even if the claw 56 and the groove forming member 57 cannot be prevented from being mounted diagonally, the auxiliary abutment member 29 is not required.
Thereby, oblique mounting can be reliably prevented. Therefore, safety can be reliably ensured. Further, since the vertical rib 52 also serves as a locking mechanism functioning as a locking means and the auxiliary contact member 29, the structure can be simplified. The front panel 3 whose mounting is prevented by the oblique mounting preventing means has its upper surface 3
5 are arranged so as to be shifted upward from the upper surface of the main body casing 15 and protrude (the state of the front panel 3 shown by a dashed line in FIG. 5). Therefore, since the user can easily visually recognize that the front panel 3 is not mounted at the proper position, the user can re-install the front panel 3 at the proper position and drive. Also, when the pawl 56 goes beyond the front of the groove forming member 57, the front panel 3 projects forward, so that similarly, the user can easily confirm that the front panel 3 is not mounted at a proper position. Visible.

Further, since the claw 56 and the groove forming member 57 are provided at only one place, it is possible to minimize a decrease in mounting operability. In particular, after the vertical grooves 51 and the vertical ribs 52 are engaged with each other, the front panel 3 is slid downward to allow the claws 56 to pass through the grooves 58 autonomously. No degradation occurs. Further, since the safety switch 20 is disposed on the left side edge 41 of the main body casing 15 (the same applies to the right side edge 42), the safety switch 20 is disposed above or below the housing recess 1b. The height of the casing 15 can be reduced.

The positions of the claw 56 and the groove forming member 57 in the left-right direction and the dimensions in the front-rear direction are set as follows. That is, the front panel 3 on the safety switch 20 side
When the claw 56 passes in front of the groove forming member 57 and the front panel 3 is slid in a state where the left edge 31 is along the front surface 1a and the right edge 32 is floating, the operation rib 22 Cannot operate the safety switch 20.
In this case, as the position in the left-right direction is closer to the safety switch 20, the size in the front-rear direction may be shorter. At the same time, with the right edge 32 of the front panel 3 remote from the safety switch 20 along the front surface 1a and the left edge 31 floating, the claw 56 passes in front of the groove forming member 57, When the front panel 3 is slid, the operation rib 22 cannot operate the safety switch 20. In this case, as the distance from the safety switch 20 in the left-right direction increases, the dimension in the front-rear direction can be shortened. In the above two cases, the safety switch 20 cannot be operated, and the dimension in the front-rear direction is set to be short. For example, it is preferable that the claws 56 be located at the above-described left and right positions.

Further, the upper portion of the front panel 3 which can be easily inserted by a hand in an oblique state can be reliably aligned with the front surface 1a by the locking mechanism, which is preferable for improving safety. Further, in an air precipitating type air cleaning device having an ionization unit 5 to which a high voltage is applied during operation, the present invention, which can surely prevent the oblique mounting, is preferable for ensuring low cost and safety. Further, since the pre-filter 4 is mounted on the front surface of the ionization line mounting frame of the ionization section 5, the ionization line can be protected behind the pre-filter 4, and as a result, the front panel 3 is in an inclined state. However, it is possible to prevent the ionized radiation from being exposed at the position where the hand touches, which is more preferable for ensuring safety. In addition, when the pre-filter is attached to the front panel 3, since the ionization rays are easily exposed, the embodiment in which the oblique attachment can be prevented is preferable for ensuring safety.

In the above-described embodiment, the auxiliary contact member 29 is constituted by the projection 59 and the vertical rib 52.
And the groove forming member 57. In addition, various design changes can be made without changing the gist of the present invention.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an air cleaning device according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional front view of the air cleaning device shown in FIG.

FIG. 3 is a partial cross-sectional plan view of the air cleaning device shown in FIG.

FIG. 4 is a partially sectional left side view of the air cleaning device shown in FIG. 1;

5 is a left side view, partially in section, of the air cleaning device shown in FIG. 1, showing a state where the front panel is being mounted.

FIG. 6 is a partial cross-sectional plan view of the air cleaning device shown in FIG. 1, showing a state where a front panel is oblique.

FIG. 7 is a partially sectional left side view of the air cleaning device shown in FIG. 1, showing a state in which a front panel is warped.

8 is a partial cross-sectional plan view of the air cleaning device shown in FIG. 1, showing a state in which a front panel is warped.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air purifier 1a Front 1d Side 3 Front panel 15 Main body casing 20 Safety switch 29 Auxiliary contact member 31 Left edge (front panel) 32 Right edge (front panel) 41 Left edge (front) 42 Right edge ( Front surface) 51 Vertical groove (locking means) 52 Vertical rib (locking means) 56 Claw (oblique attachment preventing means, contact member) 57 Groove forming member (oblique attachment preventing means, contact member) 58 Groove 59 Projection (oblique attachment prevention) Means) DD slide direction

Claims (4)

[Claims] A front panel (3) slid downward along a front surface (1a) of a main body casing (15) and attached to the main body casing (15); The engagement of the pair of locking means (51, 51) prevents the left and right edges (31, 32) of the mounted front panel (3) from coming off the front surface (1a) of the main casing (15). 52) and one of the right and left edges of the front surface (1a) of the main casing (15).
(41) and the only safety switch (20) that is pressed by the front panel (3) to release the cutoff of electricity, and the edge of the front panel (3) near the safety switch (20) (31) so that the safety switch (20) can be operated.
5) along the front (1a), and with the edge (32) of the front panel (3) remote from the safety switch (20) floating from the front (1a) of the main casing (15). (3) The front panel (3) shall have oblique mounting prevention means (56, 57, 29) for preventing the front panel (3) from being pushed down before operating the safety switch (20) when the (3) is pushed down. An air purifier characterized by the following. 2. The air cleaning apparatus according to claim 1, wherein the oblique mounting preventing means (56, 57) is provided on the front panel (3) and the main body casing (15), respectively, and abuts on the front panel (3). 3) A pair of abutment members (56,
57), and one abutment member consists of a claw (56), and the other abutment member has an edge (31) of the front panel (3) on the side of the safety switch (20) facing the front of the main body casing (15). A groove forming member (57) that forms a groove (58) into which the claw (56) can be fitted only in a state along (1a).
The contact member (56) of the front panel (3) is disposed closer to the safety switch (20) than the center (CL) in the left-right direction of the front panel (3). apparatus. 3. An air purifying apparatus according to claim 2, wherein said oblique mounting prevention means comprises an edge (32) of a front panel (3) on the side opposite to the safety switch (20) and a main body corresponding thereto. It further includes a pair of auxiliary abutting members (29) provided on the portion (42) of the casing (15) and abutting each other, wherein the claw (56) is fitted into the groove (58), and the safety switch (20 ) And the edge (32) of the front panel (3)
When the front panel (3) is pushed down while floating from the front (1a) of the main casing (15) due to the warp of (3),
Before the front panel (3) operates the safety switch (20), the pair of auxiliary contact members (29) come into contact with each other and the front panel (3)
An air purifying device characterized by preventing the air from being pushed down. 4. The air purifying apparatus according to claim 3, wherein the locking means is provided on the front panel (3) and engages with the vertical groove (51) on the side surface (1d) of the main body casing (15). The pair of auxiliary contact members (29) are formed so as to protrude from the vertical ribs (52) and the front surface (1a) of the main casing (15). 52)
And a projection (59) contacting a lower part of the air purifier.