JPH0239640B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention supports a motor section at the tip of a column protruding from a base via a neck member so that the angle of elevation and elevation can be adjusted and the head can swing freely from side to side. The present invention relates to a blower having a structure in which the electric motor section and the blower blade are covered with a guard body.

(b) Prior art As a technology prior to the present invention, Utility Model Application No. 56-99091
Publication No. 57-22695 and Design Registration No.
There are Publication No. 446743, Design Registration No. 446744, etc. In the former publication, the main body of the electric fan is oscillated within the guard body, which increases the size of the guard body. In addition, in the latter publication, a swinging mechanism is built into the stand and swings the support itself, making the fan head smaller, but making the overall structure of the fan more complicated and increasing the range of swinging. Furthermore, in the design gazette, a guard body is attached to the rear of the electric motor unit to cover the blower blades and the electric motor unit, but the lower part of the guard body is recessed inward so that the neck piece can escape. Therefore, the structure of the guard body becomes complicated, and since the guard member in this concave part is close to the blower blade, there is a risk of wind noise being generated.Furthermore, there is a gap between the neck piece and the support column between the guard body and the neck piece. There is also a safety issue as it creates a large space for people to use.

(C) Problems to be Solved by the Invention The present invention covers the blower blade and the electric motor part with a guard body, has a simple structure, reduces the generation of wind noise, and has a simple structure. Another object of the present invention is to provide a blower that reduces the generation of wind noise and improves safety.

(d) Means for Solving the Problems The blower of the present invention includes a base having a protruding support, an intermediate neck attached to the tip of the support, and an angle of elevation that can be freely adjusted via a pivot on the intermediate neck. a neck member consisting of a neck piece pivoted to the neck piece; an electric motor unit attached to the neck piece and supported so as to be adjustable in elevation and horizontally swingable; a blower blade attached to a rotating shaft of the electric motor unit; and the electric motor. and a guard body which is attached to the rear part of the motor part so as to cover the air blower blade, and an insertion hole through which the pivot part of the neck member is inserted is formed in the lower surface of the guard body. are doing.

(E) Effect With the above configuration, the blower blade and electric motor are completely housed within the guard body, and the guard body is positioned at a distance from the blower blade, so wind noise is reduced and the neck member is Since the pivot portion is positioned through the insertion hole of the guard body, the distance between the insertion hole and the neck member can be maintained substantially constant even when the elevation angle is adjusted.

(F) Example The blower 1 is mounted on a base 3 on which a control switch 2 is mounted.
, a pipe-shaped support 4 protruding from the base 3, a neck member 5 attached to the tip of the support 4, an electric motor 6 pivotally supported by the neck member 5, and a A blower blade 8 attached to the rotating shaft 7, a front cover 9 that covers the front surface of the electric motor section 6, a cup-shaped rear cover 10 that covers the upper, lower, left and right peripheral surfaces and rear surface of the electric motor section 6, and the electric motor section 6 and rear cover 10
It consists of a guard body 11 attached to the rear part of the body, and a handle 12 formed at the rear part of the guard body 11.

The base 3 is formed in the shape of a truncated cone, and houses the control switch 2 having a conical knob 13 at the top thereof. The control switch 2 is of a rotary type and is of a type that can control the speed of the electric motor section 6 and also control the operating time. A recess 15 is formed in the back plate 14 of the base 3, and serves as a storage area for a power cord 16. Although not shown in the recess 15, a cord hooking portion or the like for holding the power cord 16 within the recess 15 is formed. The cylindrical part 17 formed on the base 3 and into which the support column 4 is inserted and supported has its lower part connected to the back plate 1.
4 is supported. The support column 4 is connected to the cylindrical portion 17
It is inserted into and supported by, and fixed with screws 18. Inside the pillar 4 is a power supply cord 19 for the electric motor section 6.
is inserted.

The neck member 5 consists of an intermediate neck body 20 and a neck piece 21. The intermediate neck body 20 is fitted onto the tip of the support column 4 and is supported rotatably. The neck piece 21 is pivotally supported on the forked portion of the intermediate neck body 20 so as to be able to freely adjust the angle of depression and elevation. On the upper surface of the neck piece 21, a pivot of the electric motor section 6 is inserted and supported, and one end of a swing link 23 of a left-right swing mechanism 22, which will be described later, is supported.

The electric motor section 6 includes an electric motor 24 with the rotating shaft 7 protruding forward, and the left-right oscillation mechanism 22 formed at the rear of the electric motor 24. In this embodiment, the left-right swing mechanism 22 is formed of a gear assembly driven by the electric motor 24. The left-right swing mechanism 22 includes a worm 25 formed on the rotating shaft 7, a worm wheel 26 that meshes with the worm 25, and a rotating shaft 28 that pivots the worm wheel 26, which has a pinion 27 formed at its lower end. and an operating gear 2 pivotally supported by the rotation shaft 28.
9, an operating body 30 for vertically moving the operating gear 29 along the rotation shaft 28, and the pinion 27.
a crank gear 31 that meshes with the oscillating link 23, the other end of which is pivotally supported on the outer periphery of the crank gear 31;
It becomes more. The rotation shaft 28 is connected to the gear lower case 32.
The intermediate portion thereof is pivotally supported, and the top end portion thereof is supported by the gear upper case 33. A tooth-like engagement protrusion 34 is formed on the upper surface of the worm wheel 26,
Engagement teeth 35 that engage and disengage from the engagement protrusion 34 are formed on the lower surface of the operating gear 29 . The operation gear 29 is always urged by an elastic body 36 in a direction to engage the engagement protrusion 34 . Said operating gear 2
9 and the rotating shaft 28 are connected by a ball clutch 37 built into the rotating shaft 28. By moving the operating gear 29 up and down using the operating body 30, the left and right oscillations are stopped. The operating body 30
is pivotally supported on a boss 38 protruding from the gear upper case 33, and is attached with washers 39 and screws 40. A locking body 42 urged outward by a spring 41 is attached to the operating body 30, and a locking portion 4 with which the locking body 42 engages is attached to the gear upper case 33.
3 is formed. The locking body 42 is a locking portion 43
By engaging with , the operating body 30 is held in a state in which the operating gear 29 is moved upward and in a state in which it is moved downward. The operating section 44 of the operating body 30 protrudes rearward from the electric motor section 6.

The front cover 9 is formed into a plate shape and is fixed to the front surface of the electric motor section 6 with screws 45. The front end of the rear cover 10 is fixed to the peripheral edge of the front cover 9 with screws 46. The operating portion 44 protrudes from an insertion hole 47 formed in the rear cover 10.

The guard body 11 includes a front guard 48 and a rear guard 4.
9 and more. The front guard 48 has a decorative plate 50 formed in the center, and a large number of steel wire rods 52 are stretched between the annular body 51 and the decorative plate 50.
The rear guard 49 is formed by forming a mounting plate 53 in the center, and by stretching a large number of steel wire rods 55 between the annular body 54 and the mounting plate 53. Both annular bodies 5
1 and 54 with clips, screws, etc., the front guard 48 and rear guard 49 are connected. The attachment hole 53 is attached to the rear cover 10 with a screw 56. The operating portion 44 protrudes from an insertion hole 57 formed in the mounting plate 53.
The mounting plate 53 is made of sheet metal. A decorative plate 58 is attached to cover the mounting plate 53, and a screw 59 for attaching the decorative plate 58 is connected to the electric motor section 6.
It is screwed into the rear surface and integrally connects and fixes the rear cover 10, the rear guard 46, the decorative plate 58, and the electric motor section 6. The decorative plate 58 has the operating section 44
A cylindrical hole 59 is formed from which the cylindrical hole 59 projects. By covering the electric motor section 6 with the rear guard 49, the rear cover 10, which conventionally required sufficient strength and function as a protector, is not particularly required, and can be formed as in this embodiment. However, it is sufficient that no abnormal noise is generated due to vibration or the like. By making the operation part 44 of the left-right swing mechanism 22 protrude from the rear surface, even though the electric motor part 6 is covered by the rear guard 49, the stop operation of the left-right swing can be performed smoothly. be. The rear guard 49 is formed into a substantially hemispherical shape, and a through hole 60 for the neck member 5 is formed by cutting and removing a portion of the steel wire 55 on the lower surface thereof. A connecting rod 61 is welded and fixed to the end of the cut steel wire 55a, and both ends of the connecting rod 61 intersect with the uncut steel wire 55b in an uncoupled state, and the adjacent uncut steel wire 55c It is joined by welding. Therefore, the steel wire rod 55b can be easily bent. The size of the insertion hole 60 is determined by the size of the insertion hole 60.
The size is slightly larger than the rotation range (solid and dotted lines in FIG. 2). Therefore, the distance between the insertion hole 60 and the neck member 5 can be set to a size that makes it difficult for a finger to be inserted. Further, the steel wire rod 55
Since b is flexible, even if a finger is inserted into the insertion hole 60, the pinching force is small and the finger is not easily damaged. By positioning the rear guard 49 at a distance from the rear of the blower blade 8, the generation of wind noise can be reduced.

Further, the imaginary surface of the rear guard 49 forming the insertion hole 60 is connected to a pivot 62 that pivotally connects the neck piece 21 of the neck member 5 and the intermediate neck body 20.
form a surface located nearby. Therefore, even if the angle of elevation is adjusted about the pivot shaft 62, the distance between the insertion hole 60 and the neck member 5 is maintained substantially constant.

(G) Effects of the Invention The blower of the present invention is constructed as described above, and in particular, the guard body is positioned at a distance from the blower blades, the blower blades and the motor part are covered with the guard body, and the guard body is positioned at a distance from the blower blades. By forming an insertion hole for the neck member in the body, it is possible to prevent the generation of wind noise, and it also has the effect of simplifying the structure, reducing the distance between the fixed part and the movable part, and improving safety. .

[Brief explanation of drawings]

Fig. 1 is a sectional view of the blower of the present invention, and Fig. 2 is a sectional view of the blower of the present invention.
Figure 3 is an exploded sectional view of the main part, Figure 4 is a plan view of the swing mechanism, and Figure 5 is a - sectional view of Figure 4.
The arrow view, Figure 6 is a cross-sectional view of Figure 5, and Figure 7 is
The figure is a - sectional view of FIG. 4. 3... Base, 4... Support, 5... Net member,
6...Electric motor section, 8...Blower blade, 11...Guard body, 60...Insertion hole.

Claims (1)

[Claims] 1. A neck member consisting of a base with a protruding support, an intermediate neck attached to the tip of the support, and a neck piece pivoted to the intermediate neck via a pivot so that the angle of elevation can be adjusted, and attached to the neck piece. a motor section which is supported so as to be able to freely adjust the elevation angle and swing from side to side; a blower blade which is attached to a rotating shaft of the motor section; and a blower blade which is attached to the rear of the motor section so as to cover the motor section and the blower blade. What is claimed is: 1. A blower comprising: a guard body; an insertion hole formed in a lower surface portion of the guard body through which a pivot portion of the neck member is inserted;