JP6047755B2 - Fixing part structure for plastic molded part and humidifier equipped with the same - Google Patents

Description

  The present invention relates to a structure for fixing a plastic molded part and a humidifier equipped with the structure.

  Conventionally, the fixing part structure of this type of plastic molded part consists of a plastic molded part and a fixing part provided on the inner surface side of the plastic molded part. A boss having a cylindrical leg portion extending in a direction perpendicular to the inner surface, a bottom plate portion closing the opening at the tip of the leg portion, and a screw hole extending from the bottom plate portion in a direction perpendicular to the inner surface of the plastic molded part A part of the leg part is made of a side wall surface of the plastic molded part, and the plastic molded part, the leg part, the bottom plate part, and the boss part are formed. What was shape | molded integrally is known (for example, refer patent document 1).

Japanese Patent Laid-Open No. 07-112454

  In such a plastic molded part fixing part structure described in Patent Document 1, since a part of the leg is formed by the side wall surface of the plastic molded part, it can be provided only on the side wall surface of the plastic molded part.

  Here, if the leg portion is separated from the side wall surface of the plastic molded part, the strength of the leg portion is reduced. Here, when the thickness of the leg portion is increased in order to improve the strength of the leg portion, sink marks are generated on the outer surface of the plastic molded part.

  Accordingly, an object of the present invention is to provide a structure of a fixed part of a plastic molded part and a humidifier equipped with the same, in which the strength of the fixed part is improved without causing sink marks on the outer surface of the plastic molded part. To do.

In order to achieve this object, the plastic molded part fixing part structure of the present invention comprises a plastic molded part and a fixing part provided on the inner surface side of the plastic molded part. A cylindrical leg portion extending from the inner surface of the molded part in a direction perpendicular to the inner surface of the plastic molded component, a bottom plate portion closing the opening at the tip of the leg portion, and an inner surface of the plastic molded component from the bottom plate portion A boss portion having a screw hole extending in a vertical direction, and having an opening in a cylindrical surface on one side of the leg portion, and the leg portion and the cylindrical surface on the other side of the leg portion. A plurality of plate-shaped first reinforcing portions for connecting the boss portion, the bottom plate portion, and the plastic molded component are provided, the first reinforcing portion, the plastic molded component, the leg portion, the bottom plate portion, and the boss portion. And one In molded, said first plurality of end of the other side of the reinforcing portion, the providing the second reinforcing portion for connecting the plastic molded component, and the first reinforcing portion and the second reinforcement portion The plastic molded part, the leg part, the bottom plate part, and the boss part are integrally molded .

According to the present invention, the plastic molded part and the fixing part provided on the inner surface side of the plastic molded part, the fixing part is perpendicular to the inner surface of the plastic molded part from the inner surface of the plastic molded part. A cylindrical leg extending to the bottom, a bottom plate that closes the opening at the tip of the leg, and a boss having a screw hole extending from the bottom plate in a direction perpendicular to the inner surface of the plastic molded part, There is an opening on the cylindrical surface on one side of the leg part, and a plurality of parts connecting the leg part, the boss part, the bottom plate part, and the plastic molded part on the cylindrical surface side on the other side of the leg part. A plate-shaped first reinforcing portion is formed, and the first reinforcing portion, the plastic molded component, the leg portion, the bottom plate portion, and the boss portion are integrally molded, and the other side of the first reinforcing portion A plurality of ends and the plus A second reinforcing portion that connects the molded molded part, and the first reinforcing part, the second reinforcing part, the plastic molded part, the leg part, the bottom plate part, and the boss part are integrated. It is characterized by being molded .

As described above, a plurality of plates having an opening on the cylindrical surface on one side of the leg portion and connecting the leg portion, the boss portion, the bottom plate portion, and the plastic molded part on the other cylindrical surface side of the leg portion. Since the first reinforcing part having the shape is provided and the first reinforcing part, the plastic molded part, the leg part, the bottom plate part, and the boss part are integrally molded, the thickness of the leg part is set to the outer surface of the plastic molded part. Even if it is reduced to such an extent that no sink mark is generated, the strength of the fixed portion can be improved by the plate-shaped first reinforcing portion. Moreover, the 2nd reinforcement part which connects the some edge part of the other side of a 1st reinforcement part, and a ventilation side top surface is provided, and a 1st reinforcement part, a 2nd reinforcement part, and a ventilation side top surface are provided. The leg portion, the bottom plate portion, and the boss portion are integrally molded with resin. Thereby, when a force is applied to the tip side of the boss portion in a direction inclined to one side of the main body case, in particular, the plurality of first connecting portions that connect the plurality of first reinforcing portions and the blower side top surface. And a tensile stress generate | occur | produces in the 2nd connection part which connects a 2nd reinforcement part and a ventilation side top | upper surface. Here, it is considered that the stress is dispersed and the strength can be improved by the plurality of first connecting portions and the second connecting portions.

  As a result, the strength of the fixed portion can be improved without causing sink marks on the outer surface of the plastic molded part.

The perspective view which looked at the humidification apparatus of Embodiment 1 of this invention from the case front side The perspective view which looked at the humidification device from the case back side Vertical section of the humidifier The perspective view which shows the inner surface and the inside of a main body case of the ventilation | gas_flowing side top surface of the humidification device The perspective view which showed the inner surface of the ventilation side top | upper surface of the humidification device

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view of the humidifier according to Embodiment 1 of the present invention as viewed from the front side of the case.

  The humidifier according to the present embodiment is covered with a main body case 1 having a width dimension W larger than a depth dimension L. The side surface of the main body case 1 is covered with a case front surface 1a, a case side surface 1b on the other side, a case back surface 1c, and a case side surface 1d on one side. The top surface of the main body case 1 is covered with a blower-side top surface 1e that is a top panel that covers the upper part of the space on the other side, and a tank-side top surface 1f that covers the upper part of the space on one side. It has an oval shape in plan view.

  The blower outlet 10 is formed in the ventilation side top | upper surface 1e. The blower outlet 10 is provided in U shape along the outer edge of the ventilation | gas_flowing top surface 1e other than the outer edge which contacts the tank side top surface 1f.

  FIG. 2 is a perspective view of the humidifier as seen from the back side of the case. The humidifier is provided with a suction port 17 over the entire width of the case back surface 1c. The suction port 17 is divided into an upper suction port 15 and a lower suction port 16 in the vertical direction.

  FIG. 3 is a longitudinal sectional view of the humidifier. The humidifier includes a blower 8, a water storage container 11 for storing water, a humidifying filter 12 for absorbing water from the water storage container 11, and a water supply tank 13 for supplying water to the water storage container 11 inside the main body case 1. Yes.

  The air blowing means 8 is disposed in the space a on the other side of the main body case 1. The water supply tank 13 is disposed in the space b on one side of the main body case 1. The space b on one side forms a storage space for the water supply tank 13.

  The air blowing means 8 includes a cylindrical member 8b that constitutes the fan intake port 8a, a rotating body 8d that erects a plurality of centrifugal fans 8c, and a motor unit 8e. The cylindrical member 8b is joined to the centrifugal fan 8c. Accordingly, the cylindrical member 8b rotates together with the rotating body 8d by driving the motor unit 8e.

  The air blowing means 8 has a motor intake 8e attached to the lower surface of the air blowing top surface 1e with the fan air inlet 8a facing downward. The motor unit 8e is disposed at the center of the blower-side top surface 1e, and the air outlet 10 shown in FIGS. 1 and 2 is disposed on the blower-side top surface 1e other than the position where the motor unit 8e is disposed in plan view. Yes.

  An air guide tube 9 is provided below the air blowing means 8. The air guide tube 9 forms a central communication port 2 that guides humidified air to the fan intake port 8a. A partition 3 is formed on the outer periphery of the central communication port 2.

  The air guide tube 9 is a tube shape having an arcuate outer peripheral surface, is formed in a shape that further expands downward, is located in an upper space d that is a space below the air blowing means 8, and is located on the other side. It is located at the center of the horizontal plane of the space a.

  The space a on the other side is divided into a lower space c and an upper space d by the partition portion 3. The upper space d is formed on the outer periphery of the air guide tube 9. The lower suction port 16 opens to the lower space c, and the upper suction port 15 opens to the upper space d.

  Between the space a on the other side of the main body case 1 and the space b on the one side of the main body case 1, an inner plate 6 is disposed in the vertical direction. The inner plate 6 is provided between the top surface of the main body case 1 and the partition portion 3. Therefore, the inner plate 6 partitions the air passage of the air blowing means 8 and the space b on one side. The inner plate 6 partitions the upper space d and the space b on one side. The lower space c and the space b on one side communicate with each other.

  The water storage container 11 is arrange | positioned at the space a lower part of the other side, and the space b lower part of one side. The water storage container 11 is configured by a tray that opens upward and stores water at a constant water level from the lower part of the lower space c to the lower part of the space b on one side that serves as a storage space for the water supply tank 13.

  In the water storage container 11 located in the lower space c, a frame-shaped humidifying filter 12 opened in the vertical direction is placed with its lower part immersed in water and its upper end abutting around the central communication port 2. ing.

  The space b on one side is formed below a tank side top surface 1 f formed on the top surface of the main body case 1, and stores a water supply tank 13 for supplying water to the water storage container 11. The water supply tank 13 is inserted into the space b on one side with the tank-side top surface 1f opened, and is detachably attached to the opening of the water storage container 11 provided.

  The water storage container 11, the humidifying filter 12, and the water supply tank 13 constitute a humidifying means 14.

  The operation of the humidifier will be described. When the centrifugal fan 8c rotates by the motor unit 8e, air is sucked from the suction port 17 of the main body case 1 and blown to the humidifying filter 12. Since the humidification filter 12 sucks up water supplied from the water supply tank 13 to the water storage container 11, the air blown here is humidified, and the humidified air is blown into the room from the outlet 10.

  The feature point in this embodiment is the structure of the fixing | fixed part to the main body case 1 of the ventilation side top | upper surface 1e.

  FIG. 4 is a perspective view showing an air blower-side top surface 1e removed from the humidifier, and an inner surface of the blower-side top surface 1e and an upper surface of the humidifier. FIG. 5 is a perspective view showing the inner surface of the blower side top surface 1e with the blower side top surface 1e removed from the humidifier. The fixing portion 20 is located on the inner surface side of the blower-side top surface 1e, which is a plastic molded part, and includes a leg portion 21, a bottom plate portion 22, and a boss portion 23.

  The leg portion 21 has a cylindrical shape extending in a direction perpendicular to the inner surface of the blower side top surface 1e from the inner surface of the blower side top surface 1e. At the tip of the leg 21, a bottom plate part 22 that closes the opening at the tip of the leg 21 is provided. The bottom plate portion 22 is provided with a boss portion 23 having a screw hole 24 extending in a direction perpendicular to the inner surface of the blower side top surface 1e. The blower-side top surface 1 e is fixed to the main body case 1 by fixing the boss portion 23 and the main body side fixing portion 25 provided in the main body case 1 with screws.

  The cylindrical surface on one side of the leg portion 21 has an opening 26, and the boss portion 23, the leg portion 21, the bottom plate portion 22, and the blower side top surface 1 e are connected to the other cylindrical surface of the leg portion 21. A plurality of plate-shaped first reinforcing portions 27 are provided. The blower side top surface 1e, the leg portion 21, the boss portion 23, and the plurality of first reinforcing portions 27 are integrally molded with resin. In addition, the plate | board thickness of the some 1st reinforcement part 27 is smaller than the plate | board thickness of the ventilation side top | upper surface 1e. The thickness of the bottom plate portion 22 is smaller than the plate thickness of the blower side top surface 1 e and larger than the thickness of the leg portion 21.

  In this manner, the cylindrical surface on one side of the leg portion 21 has the opening 26, and the leg portion 21, the boss portion 23, the bottom plate portion 22, and the blower side top surface are provided on the other cylindrical surface side of the leg portion 21. A plurality of plate-shaped first reinforcing portions 27 that connect 1e are provided, and the first reinforcing portion 27, the blower side top surface 1e, the leg portion 21, the bottom plate portion 22, and the boss portion 23 are integrally molded. Therefore, even if the plate thickness of the leg portion 21 is reduced to such an extent that no sink marks are generated on the outer surface of the blower-side top surface 1e, the strength of the fixed portion 20 can be improved by the plate-shaped first reinforcing portion 27. it can. As a result, the strength of the fixed portion can be improved without causing sink marks on the outer surface of the plastic molded part. In addition, the extent to which sink does not occur means that the plate thickness of the first reinforcing portion 27 is 50 to 40% of the plate thickness of the blower side top surface 1e.

  Further, since the water supply tank 13 is detachably provided from the top surface on one side of the main body case 1, the water supply tank 13 may collide with one side of the blower-side top surface 1e when the water supply tank 13 is attached. That is, a force is applied to the tip end side of the boss portion 23 in a direction inclined to one side of the main body case 1.

  In such a case, in particular, tensile stress is generated in the plurality of first connecting portions 28 that connect the plurality of first reinforcing portions 27 and the blower side top surface 1e. Here, it is considered that the stress is dispersed by the plurality of first connecting portions 28 and the strength can be improved. In addition, the 1st reinforcement part 27 collides a water supply tank with the one side of the ventilation side top surface 1e at the time of mounting | wearing of the water supply tank 13, and is parallel with the direction where the ventilation side top surface 1e moves.

  Moreover, the 2nd reinforcement part 29 which connects the some edge part of the other side of the 1st reinforcement part 27, and the ventilation side top surface 1e is provided, The 1st reinforcement part 27 and the 2nd reinforcement part 29, The blower side top surface 1e, the leg portion 21, the bottom plate portion 22, and the boss portion 23 are integrally molded with resin. The plate thickness of the second reinforcing portion 29 is smaller than the plate thickness of the blower side top surface 1e. The plate thickness of the second reinforcing portion 29 is the same as the plate thickness of the first reinforcing portion 27.

  Thereby, when a force is applied to the tip end side of the boss portion 23 in a direction inclined to one side of the main body case 1, a plurality of first reinforcing portions 27 and a plurality of first side portions that connect the blower side top surface 1e are connected. Tensile stress is generated in the first connecting portion 28 and the second connecting portion 30 that connects the second reinforcing portion and the blower-side top surface 1e. Here, it is considered that the stress is dispersed and the strength can be improved by the plurality of first connecting portions 28 and the second connecting portions 30.

  Further, the first reinforcing portion 27 and the second reinforcing portion 29 have a U-shaped horizontal cross section in which one side of the blower side top surface 1e is opened. In addition, the 2nd reinforcement part 29 collides a water supply tank with the one side of the ventilation side top surface 1e at the time of mounting | wearing of the water supply tank 13, and is perpendicular | vertical with respect to the direction where the ventilation side top surface 1e moves.

  Thereby, when a force is applied to the tip end side of the boss portion 23 in a direction inclined to one side of the main body case 1, a plurality of first reinforcing portions 27 that connect the plurality of first reinforcing portions 27 and the blower-side top surface 1e. Tensile stress is generated in the connecting portion 28 and the second connecting portion 30 that connects the second reinforcing portion 29 and the blower-side top surface 1e. In particular, the largest tensile stress is generated in the second connecting portion 30 farthest from the boss portion 23. Since the second connecting portion has a predetermined length instead of a point, it is considered that the stress is dispersed by the second connecting portion 30 and the strength can be improved.

  Here, when the water supply tank 13 is mounted, the water supply tank 13 is caused to collide with one side of the blower side top surface 1e, and a force is applied in a direction in which the tip side of the boss portion 23 is inclined to one side of the main body case 1, and the fixing portion 20 is damaged. The case where the impact until it is applied is demonstrated.

  First, if there is no plurality of first reinforcing portions 27 and second reinforcing portions 29, the connecting portion between the blower-side top surface 1e and the leg portion 21 is broken. That is, the leg part 21, the base plate part 22, and the boss part 23 are integrally displaced from the blower side top surface 1e. This is because stress concentrates on a part of the connecting part between the blower side top surface 1e and the leg part 21 and breaks from there, and as a result, the leg part 21, the bottom plate part 22 and the boss part 23 from the blower side top face 1e. It is thought that this is because they are displaced as a whole.

  On the other hand, in the case where the plurality of first reinforcing portions 27 and the second reinforcing portions 29 are provided, the plurality of first connecting portions 28 and the second connecting portions 30 are provided on the blower side top surface 1e. The enclosed portion is pulled inward in the main body case 1, and the blower side top surface 1 e itself is cracked in a U shape along the plurality of first connecting portions 28 and second connecting portions 30. . That is, the plurality of first reinforcing portions 27 and second reinforcing portions 29, and the plurality of first connecting portions 28 and second connecting portions 30 having a thickness smaller than the thickness of the blower-side top surface 1e are damaged. Instead, the blower side top surface 1e having a thickness larger than the thickness of the plurality of first reinforcing portions 27 and the second reinforcing portions 29 is damaged. As a result, the 1st reinforcement part 27 and the 2nd reinforcement part 29 are the 1st reinforcement part 27 and the 2nd reinforcement part by the horizontal cross section which the one side in the ventilation side top | upper surface 1e opened in the U shape. 29, and the first connecting portion 28 and the second connecting portion 30 themselves can be dispersed and the strength can be improved. In addition, the length of the inner surface direction of the ventilation side top surface 1e of the 1st connection part 28 and the 2nd connection part 30 is substantially the same.

  The outer surfaces of the boss portion 23 and the leg portion 21 on the other side of the blower side top surface 1e are the same surface. Specifically, the boss portion 23 has a cylindrical shape, and the leg portion 21 has a square cylindrical shape on one side from the center of the leg portion, and a cylindrical shape on the other side from the center of the leg portion 21. Here, the outer surface of the leg part 21 and the boss | hub part 23 whose other side is cylindrical shape is formed in the same surface.

  Thereby, when a force is applied to the tip end side of the boss portion 23 in a direction inclined to one side of the main body case 1, the outer surfaces of the boss portion 23 and the leg portion 21 on the other side are the same surface, so It is considered that the generated stress is dispersed and the strength can be improved.

  According to the present invention, the plastic molded part and the fixing part provided on the inner surface side of the plastic molded part, the fixing part is perpendicular to the inner surface of the plastic molded part from the inner surface of the plastic molded part. A cylindrical leg extending to the bottom, a bottom plate that closes the opening at the tip of the leg, and a boss having a screw hole extending from the bottom plate in a direction perpendicular to the inner surface of the plastic molded part, There is an opening on the cylindrical surface on one side of the leg part, and a plurality of parts connecting the leg part, the boss part, the bottom plate part, and the plastic molded part on the cylindrical surface side on the other side of the leg part. A plate-shaped first reinforcing portion is provided, and the first reinforcing portion, the plastic molded part, the leg portion, the bottom plate portion, and the boss portion are integrally molded.

  As described above, a plurality of plates having an opening on the cylindrical surface on one side of the leg portion and connecting the leg portion, the boss portion, the bottom plate portion, and the plastic molded part on the other cylindrical surface side of the leg portion. Since the first reinforcing part having the shape is provided and the first reinforcing part, the plastic molded part, the leg part, the bottom plate part, and the boss part are integrally molded, the thickness of the leg part is set to the outer surface of the plastic molded part. Even if it is reduced to such an extent that no sink mark is generated, the strength of the fixed portion can be improved by the plate-shaped first reinforcing portion.

  Therefore, it is expected to be used for household electrical appliances using plastic molded parts, in particular, humidifiers, humidified air purifiers and the like.

DESCRIPTION OF SYMBOLS 1 Main body case 1a Case front surface 1b Case side surface on the other side 1c Case back surface 1d Case side surface on one side 1e Blower side top surface 1f Tank side top surface 2 Central communication port 3 Partition part 6 Inner plate 8 Blower means 8a Fan inlet port 8b Tube Shaped member 8c Centrifugal fan 8d Rotating body 8e Motor part 9 Air guide tube 10 Air outlet 11 Water storage container 12 Humidification filter 13 Water supply tank 14 Humidifying means 15 Upper suction port 16 Lower suction port 17 Suction port 20 Fixed part 21 Leg part 22 Bottom plate part 23 Boss portion 24 Screw hole 25 Main body side fixing portion 26 Opening 27 First reinforcing portion 28 First connecting portion 29 Second reinforcing portion 30 Second connecting portion a Space on the other side b Space on the one side c Lower space d Upper space

Claims (4)

It consists of a plastic molded part and a fixing part provided on the inner surface side of the plastic molded part. The fixing part has a cylindrical shape extending from the inner surface of the plastic molded part in a direction perpendicular to the inner surface of the plastic molded part. A leg plate, a bottom plate portion that closes the opening at the tip of the leg portion, and a boss portion that has a screw hole extending from the bottom plate portion in a direction perpendicular to the inner surface of the plastic molded part, on one side of the leg portion A plurality of plate-shaped first members for connecting the leg portion, the boss portion, the bottom plate portion, and the plastic molded part to the other cylindrical surface side of the leg portion. The first reinforcing portion, the plastic molding component, the leg portion, the bottom plate portion, and the boss portion are integrally molded, and a plurality of end portions on the other side of the first reinforcing portion, The plastic molded part A second reinforcing portion to be connected is provided, and the first reinforcing portion, the second reinforcing portion, the plastic molding component, the leg portion, the bottom plate portion, and the boss portion are integrally molded. Fixed part structure for plastic molded parts. 2. The plastic molded part fixing part structure according to claim 1 , wherein the first reinforcing part and the second reinforcing part have a U-shaped horizontal cross section opened on one side of the plastic molded part. . 3. The plastic molded part fixing part structure according to claim 1, wherein outer surfaces of the boss part and the leg part on the other side of the plastic molded part are the same surface. A main body case having an inlet and an outlet, a humidifying means provided in the main body case, an air blowing means for blowing air from the inlet through the humidifying means, and an attachment / detachment to the main body case A flexible water supply tank and a top panel provided with the boss structure of a plastic molded part according to any one of claims 1 to 3 on the top surface of the main body case. The humidifier having a configuration in which the boss portion is fixed to the main body case by a screw on the other side of the case, and the water supply tank is detachable from the top surface on the one side of the main body case.

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