Blower and clothing with blower

Abstract

To provide a novel blower with improved suction performance, and clothing with a blower comprising the blower.SOLUTION: A blower 1 comprises a motor 2, an impeller 3 connected to a rotational shaft of the motor 2, and an outer shell 4 surrounding the motor 2 and the impeller 3, and is attached to a clothing body (W) to send outside air into the clothing body (W). A suction port 41 provided in the outer shell 4 is provided with a chamfered part (45) that widens an inner diameter of the suction port 41 toward an opening end.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a blower attached to a garment body for blowing outside air into the garment body, and to a garment equipped with the blower. [Background technology]

[0002] In order to mitigate the occurrence of heat stroke and other problems in workplaces under high temperature or during summer leisure activities, "air-blowing clothing (cooling clothing)" that cools the inside of the clothing (hereinafter referred to as "the clothing body") by supplying outside air into the clothing body has been put into practical use (see, for example, Patent Document 1 below). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2019-214948 [Patent Document 2] Registered Utility Model No. 3228173 Summary of the Invention [Problem to be solved by the invention]

[0004] This type of garment with a fan is designed to have a fan attached to a hole drilled in an appropriate location on the garment body, and outside air is sent into the garment body through the fan. The fan is generally an impeller (fan) with multiple blades that is rotated by a motor.

[0005] In a typical blower, the impeller (and motor) is enclosed in an outer shell, and the outer shell is provided with an air intake located on the outside of the garment body and an exhaust port located on the inside of the garment body. For safety reasons, the air intake and exhaust ports are covered with a guard having openings such as a mesh, net, or lattice.

[0006] Recently, in order to improve the cooling capacity of clothing equipped with a fan, there has been a trend to increase the motor output of the fan, thereby increasing the number of rotations per unit time of the impeller and thereby increasing the air intake capacity of the fan.

[0007] However, increasing the motor output of the fan increases power consumption accordingly, and using a large battery with a large storage capacity to cope with the increased power consumption leads to an increase in the weight and cost of the fan-equipped garment.

[0008] The present invention was developed in view of the above technical problems, and aims to provide a novel blower with improved air intake capacity, and a blower-equipped garment equipped with the blower. [Means for solving the problem]

[0009] The blower of the present invention, which solves the above technical problems, comprises a motor, an impeller connected to the rotating shaft of the motor, and an outer shell that surrounds the motor and the impeller, and is attached to a garment body to send outside air into the garment body, and is characterized in that the air intake provided in the outer shell is provided with a chamfered portion that expands the inner diameter of the air intake toward the open end (hereinafter referred to as the "blower of the present invention").

[0010] In the blower of the present invention, it is preferable that the surface of the chamfered portion is curved so as to be convex toward the inside of the intake port.

[0011] In the fan of the present invention, the chamfered portion preferably increases the inner diameter of the intake port by 1% or more.

[0012] In the blower of the present invention, a flange is provided around the periphery of the opening end of the intake port, and recessed grooves extending inward from the outer peripheral edge are arranged at multiple locations on the end face of the flange.

[0013] The clothing with a blower of the present invention that solves the above technical problems comprises the above-mentioned blower of the present invention, a clothing body, (hereinafter referred to as "garment of the present invention"). [Effects of the Invention]

[0014] According to the present invention, durability against tightening of the screws performed when attaching the impeller to the motor is improved. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is an exploded perspective view showing an embodiment of a blower according to the present invention. [Figure 2] FIG. 2(a) is a front view showing the member (cover) on the air inlet side of the fan of the present invention, and FIG. 2(b) is a cross-sectional view taken along line AA. [Figure 3] FIG. 3 is an exploded perspective view showing another embodiment of the blower of the present invention. [Figure 4] FIG. 4 shows a front view (a) of the member (lid) on the air inlet side of the fan of the present invention, a BB cross-sectional view (b) and a CC cross-sectional view (c). [Figure 5] FIG. 5 is a front view showing an embodiment of the garment of the present invention to which the air blower of the present invention is attached. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to these embodiments.

[0017] [Embodiment 1] <Blower 1 of the present invention> Figure 1 shows a blower 1 of the present invention according to embodiment 1. The blower 1 of the present invention comprises a "motor (2)", an "impeller (3)" connected to a rotary shaft 21 of the motor 2, and an "outer shell (4)" surrounding the motor 2 and the impeller 3.

[0018] -Motor 2- The motor 2 refers to a mechanical element that outputs rotational motion by utilizing the force generated by the Lorentz force (the interaction between a magnetic field and an electric current). In this embodiment, the motor 2 is a commercially available electric motor for models that rotates a rotating shaft 21 by power supplied via a cable connected to a connector.

[0019] - Impeller 3 - The impeller 3 includes a boss 31 and a plurality of blades 32 arranged around the boss 31. The boss 31 is a component that forms the rotation center of the impeller 3, and the blades 32 rotate with the rotation of the boss 31, generating a flow of air in a certain direction. In this embodiment, a seven-blade rotor having seven eboshi-shaped blades 32 arranged radially around the boss 31 is used as the impeller 3. The impeller 3 and the motor 2 are connected by exposing the rotating shaft 21 of the motor 2 from the end face of the boss 31 through a through-hole 33 provided in the center of the boss 31 of the impeller 3, and threading a screw 5 onto the rotating shaft 21.

[0020] -Shell 4- The outer shell 4 surrounds the motor 2 and the impeller 3 to ensure safety during use of the fan 1 of the present invention. The outer shell 4 is provided with an air intake 41 and an air exhaust 42 because it must be structured to allow passage of the airflow generated by the rotation of the impeller 3. The air intake 41 and the air exhaust 42 are covered by a guard with a plurality of openings. In this embodiment, the outer shell 4 is made up of two components: a dome-shaped shell body 4A and a lid 4B that covers the opening of the shell body 4A. A female thread 43 on the inner surface of the shell body 4A is threadedly engaged with a male thread 44 on the lid 4B to form a space surrounding the motor 2 and the impeller 3. In addition, flanges (FA, FB) that protrude outward are provided on the opening portion of the outer shell body 4A and the periphery of the air intake port 41 of the lid 4B, and when the outer shell body 4A and the lid 4B are screwed together, the flanges (FA, FB) face each other.

[0021] In the fan 1 of the present invention, the intake port 41 provided in the outer shell 4 is provided with a chamfered portion 45 that widens the inner diameter of the intake port 41 toward the open end. In this embodiment, as shown in Fig. 2, the outer angle formed by the flange (FB) provided on the lid 4B of the outer shell 4 and the male thread portion 44 corresponds to the open end of the intake port 41, and the chamfered portion 45 with a flat surface is provided so as to round off the corner of the periphery of this open end.

[0022] In the fan 1 of the present invention having the above-described configuration, a chamfered portion 45 is provided at the open end of the intake port 41. Therefore, when the impeller 3 is rotated to introduce outside air into the outer shell 4, the outside air is smoothly guided along the chamfered portion 45 into the outer shell 4, thereby improving the intake capacity compared to conventional fans that do not have the chamfered portion 45.

[0023] Generally, "chamfering" means processing a corner into a 45-degree cut surface, but the chamfered portion 45 in the present invention is not limited to a 45-degree cut surface. The cut surface of the chamfered portion 45 in the present invention is preferably in the range of 15 to 60 degrees (more preferably 20 to 45 degrees).

[0024] It has also been confirmed that the intake capacity tends to improve as the area of ​​the cut surface of the chamfered portion 45 is increased and the inner diameter of the intake port 41 is enlarged. In the present invention, the degree of enlargement of the inner diameter of the intake port 41 by the chamfered portion 45 is preferably 1% or more (more preferably 1 to 10%, and even more preferably 2 to 5%).

[0025] [Embodiment 2] FIG. 3 shows a blower 1 according to a second embodiment of the present invention. The blower 1 according to this embodiment also includes a motor 2, an impeller 3 connected to the rotary shaft 21 of the motor 2, and a shell 4 surrounding the motor 2 and the impeller 3. The motor 2 and the impeller 3 are the same as those described in the first embodiment. The shell body 4A of the shell 4 according to this embodiment is also the same as the shell body 4A of the first embodiment. However, the lid 4B of the shell 4 according to this embodiment differs from the lid 4B of the first embodiment in the pattern of the openings in the guard covering the intake port 41, the shape of the chamfered portion 45, and the provision of grooves 46 at multiple locations on the end face of the flange FB.

[0026] Here, in the present invention, there is no particular limitation on the pattern of the openings in the guard that covers the intake port 41 (and the exhaust port 42). The openings in the guard can have any pattern, such as a mesh, net, or lattice pattern.

[0027] In the present invention, the surface shape of the chamfered portion 45 that enlarges the inner diameter of the intake port 41 is not necessarily limited to a flat surface. As shown in Fig. 4, the surface (cut surface) of the chamfered portion 45 may be a curved surface that is convex toward the inside of the intake port 41.

[0028] Furthermore, in this embodiment, recessed grooves 46 are provided at multiple locations on the end face of the flange (FB), and it has been confirmed that the recessed grooves 46 have the effect of directing the flow of air toward the chamfered portion 45, and that providing the recessed grooves 46 radially at multiple locations on the end face of the flange (FB) further improves the intake performance. Note that it is preferable that the bottom surface of the recessed grooves 46 be a tapered surface that deepens toward the chamfered portion 45.

[0029] <Inventive clothing 10> FIG. 5 shows a garment 10 of the present invention equipped with the inventive fan 1. The garment 10 of the present invention has the inventive fan 1 attached to the garment body (W). The garment 10 of the present invention uses the inventive fan 1 to generate an airflow from the outside to the inside of the garment body (W), thereby sending outside air into the garment body (W) and cooling the inside of the garment body (W). In this embodiment, holes are drilled in multiple locations (two locations) in the garment body (W), and the inventive fan is attached to the garment body (W) by sandwiching the periphery of each hole between the flange (FA) of the outer shell body 4A and the flange (FB) of the lid 4B. Power for driving each inventive fan 1 is supplied via a cable from power stored in a battery (C).

[0030] The present invention can be embodied in various other forms without departing from its spirit or main features. Therefore, the above-described embodiments are merely illustrative in all respects and should not be interpreted as limiting. The scope of the present invention is defined by the claims and is not limited to the text of the specification. Furthermore, all modifications and variations within the equivalent scope of the claims are within the scope of the present invention. [Industrial Applicability]

[0031] The present invention is suitably used as a means for cooling the inside of a clothing body by supplying outside air into the clothing body. [Explanation of symbols]

[0032] 1. Blower of the present invention (blower) 2 motors 21 Rotation axis 3 impeller 4. Outer shell 4A Outer shell body 4B Lid 41 Air intake 42 Exhaust port 45 Chamfered part 46 Groove 5 screws 10 Clothing of the present invention (clothing with a blower) W Clothing body

Claims

1. A blower comprising: a motor; an impeller connected to a rotary shaft of the motor; and an outer shell surrounding the motor and the impeller; the blower is attached to a garment body and sends outside air into the garment body, A blower characterized in that the intake port provided in the outer shell is provided with a chamfered portion that widens the inner diameter of the intake port toward the open end.

2. The blower according to claim 1, The surface of the chamfered portion is curved convexly toward the inside of the air intake port.

3. The blower according to claim 1, The chamfered portion enlarges the inner diameter of the intake port by 1% or more.

4. The blower according to claim 1, A flange is provided around the open end of the intake port, The fan has grooves extending inward from the outer periphery at a plurality of locations on the end face of the flange.

5. A blower according to any one of claims 1 to 4; The garment itself, A garment with a blower, comprising:

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