JP5311879B2 - Fan - Google Patents

Description

  The present invention relates to a fan capable of adjusting the height of a blower comprising a blower fan and a motor.

  Conventionally, it has a support pipe that supports a blower that has an electric motor, a support part that supports the support pipe so that it can be moved up and down, and a base part that supports the support part in an upright state. There is a fan in which a locking body that forms an elastic portion that engages with the inside is provided at the lower end of the support pipe. The elastic part of the locking body that engages with the inside of the support column is provided above the bottom surface of the locking body that is screwed to the lower end of the support pipe (see, for example, Patent Document 1).

  In the electric fan as described above, as shown in FIG. 9, when the support pipe (slide pipe) 102 is contracted, the lead wire 105 (see FIG. 10) that connects the motor and the operation circuit 104 (see FIG. 10). Space A between the bottom surface portion (attachment portion) 101b of the locking body (slider) 101 and the bottom plate 106 is required. Further, as shown in FIG. 10, when the support pipe 102 is extended, the overhang from the bottom surface portion 101b of the locking body to the cap 103b for stably supporting the blower (blower) without rattling. A wrap length B is required.

Japanese Patent Laid-Open No. 11-148488 (page 3, FIGS. 1 to 5)

  According to the conventional technique described in Patent Document 1 and shown in FIGS. 9 and 10, the locking body (slider) 101 is elastic to be engaged with the inside (guide rail) 103 a of the column (stand) 103. A portion (guide portion) 101 a is provided above the bottom surface portion 101 b of the locking body 101 that is screwed to the lower end of the support pipe 102.

  Further, as shown in FIG. 9, when the support pipe 102 is contracted, the lead wire 105 that connects the electric motor and the operation circuit 104 is accommodated between the bottom surface portion 101 b and the bottom plate 106 for accommodating the lead wire 105. Space A is secured.

Furthermore, as shown in FIG. 10, when the support pipe 102 is extended, the overlap length from the bottom surface portion 101b of the locking body 101 to the cap 103b for stably supporting the blower without rattling. When securing the B, height H of the blower holding portion 102a of the support pipe 102, _{L 1} the height of the post portion 103, when the length _{L 2} of the support pipe _102, and _H = L 1 _{+ L} 2 -B .

In the prior art, to the height H of the blower holding portion 102a higher ones, or to increase the length L ₂ of the height L ₁ or support pipe 102 of the struts 103, short overlap length B it is necessary to, but if a longer L ₁ or L _2, the height becomes higher blower holding portion 102a when reduced the support pipe 102, there is a problem that.

  In addition, when the overlap length B is shortened, in order to stably support the blower with a short overlap length without rattling, the inside (guide rail) 103a of the support column 103 and the elastic portion (guide portion) There is a problem that it is necessary to precisely fit 101a, which increases costs and decreases productivity.

  The present invention has been made in view of the above, and the height of the blower holding portion when the slide pipe is extended is high, and the height of the blower holding portion when the slide pipe is contracted is low. The purpose is to obtain a high electric fan.

In order to solve the above-described problems and achieve the object, the present invention provides a slide pipe that supports a blower that includes a blower fan and a motor, and a guide rail that is provided with the slide pipe. A stand that is slidable up and down, a lead wire wired from the motor through the slide pipe to an operation circuit installed in the stand, an attachment portion attached to the lower end of the slide pipe, and below the attachment portion And a slider having a guide portion that extends and engages with the guide rail. The slider is provided with the guide portion on an outer peripheral portion, and the coil winding of the lead wire is performed in a state where the slide pipe is most contracted. It has the lower cylinder part which accommodates a part, It is characterized by the above-mentioned.

  According to this invention, the height of the blower holding part when the slide pipe is extended is high, the height of the blower holding part when the slide pipe is contracted is low, and an effect of obtaining a fan with high productivity is obtained. Play. In addition, there is an effect that a fan that operates so as not to cause biting or damage of the lead wire can be obtained.

  Embodiments of a fan according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is a longitudinal sectional view of a state in which a slide pipe showing a first embodiment of the electric fan of the present invention is shrunk, FIG. 2 is an enlarged view of a portion B in FIG. 1, and FIG. 4 is a bottom view of the electric fan stand with the bottom plate removed, FIG. 4 is a longitudinal sectional view of the electric fan of Embodiment 1 with the slide pipe extended, and FIG. 9 shows a conventional example as a comparative example. FIG. 10 is a partial longitudinal sectional view of the electric fan in which the slide pipe is contracted, and FIG. 10 is a longitudinal sectional view of the conventional electric fan in which the slide pipe is extended as a comparative example.

  As shown in FIGS. 1-4, the electric fan 10 of embodiment is provided with the slide pipe 2 and the guide rail 3a which support the air blower (not shown) provided with a ventilation fan and a motor, and the guide rail 3a is interposed. A stand 3 that supports the slide pipe 2 so as to be slidable up and down, a lead wire 5 wired from the motor to the operation circuit 4 installed in the stand 3 through the slide pipe 2, and an attachment attached to the lower end of the slide pipe 2 And a slider 1 having a guide portion 1a that extends downward from the mounting portion 1b and engages with the guide rail 3a.

  The stand 3 has a hollow flat plate-like leg portion 3c, a column portion 3d rising from the leg portion 3c, an inner cylinder portion 3e formed in the column portion 3d, and 90 ° apart from each other in the inner cylinder portion 3e. Provided with a guide rail 3a for guiding the vertical slide of the slider 1 and a cap 3b for covering the upper end of the support column 3d and guiding the vertical slide of the slide pipe 2. Yes. The operation circuit 4 of the blower is installed in the leg 3c.

  The slide pipe 2 has a blower holding portion 2a at the upper end, the lower end is inserted into the upper tube portion 1c of the slider 1, contacts the attachment portion 1b, and the slider 1 is attached by a screw 2b.

  The slider 1 includes an upper cylindrical portion 1c into which the lower end portion of the slide pipe 2 is inserted, and a plate-like mounting portion 1b provided at the lower end of the upper cylindrical portion 1c. It has four groove-shaped guide portions 1 a that extend and engage with the guide rails 3 a of the stand 3.

  As shown in FIG. 1, the coil winding portion of the lead wire 5 connected to the operation circuit 4 from the blower through the slide pipe 2 with the slide pipe 2 being most contracted is a space below the mounting portion 1 b of the slider 1. It is housed in A comfortably.

  As shown in FIG. 2, when the slide pipe 2 is most contracted, the position of the lower end of the guide portion 1a of the slider 1 is higher than the position of the lower end of the guide portion 101a of the conventional slider 101 shown in FIG. Only lower position. The guide portion 1a (guide portion 101a) is engaged with the rail 3a (rail 103a) of the support column portion 3d of the stand 3, whereby the space between the stand 3 (stand 103) and the slide pipe 2 (slide pipe 102) is increased. Prevents rattling.

  As shown in FIG. 4, in the state where the slide pipe 2 is most extended, the electric fan 10 according to the first embodiment holds the slide pipe 2 stably without rattling, similarly to the conventional electric fan 110 shown in FIG. Therefore, an overlap length B from the lower end of the guide portion 1a of the slider 1 to the upper end of the cap 3b is secured.

However, since the electric fan 10 of Embodiment 1 has the lower end of the guide portion 1a of the slider 1 at a position lower than the lower end of the guide portion 101a of the conventional electric fan 110 by the height X, the overlap length B is the same as the conventional one. Can be obtained, a slide amount longer than the conventional fan 110 by the height X can be obtained, and the height H of the blower is H = L ₁ + L ₂ − (B−X), which is higher by the height X. can do.

  As described above, according to the electric fan 10 of the first embodiment, in the state where the slide pipe 2 is most contracted, the accommodation space A for the lead wire 5 similar to the conventional electric fan 110 can be secured, and the slide pipe In the state where 2 is extended to the maximum, the height H of the blower can be increased by the height X without precisely processing the guide portion 1a and the guide rail 3a.

Embodiment 2. FIG.
FIG. 5 is a partial longitudinal sectional view of the electric fan according to the second embodiment of the present invention in a state in which the slide pipe is contracted, and FIG. 6 is a bottom view of the electric fan according to the second embodiment with the bottom plate of the stand removed. 7 is a longitudinal sectional view of the slider of the second embodiment, and FIG. 8 is a bottom view of the slider of the second embodiment.

  As shown in FIGS. 5-8, the guide part 21a of the slider 21 of Embodiment 2 is provided in the outer peripheral part of the lower cylinder part 21d extended below the attaching part 21b. Therefore, the strength of the guide portion 21a of the slider 21 of the second embodiment is higher than that of the guide portion 1a of the first embodiment. As shown in FIGS. 7 and 8, a chamfered portion 21e is formed on the inner side of the lower end portion of the lower cylinder portion 21d. The chamfered portion 21e guides the lead wire 5 so as to enter the lower cylinder portion 21d when the slide pipe 2 and the slider 1 descend, and prevents the lead wire 5 from being caught and damaged.

  As described above, the electric fan according to the present invention is useful as a low-cost electric fan that is short when the slide pipe is contracted and becomes taller when the slide pipe is extended.

It is a longitudinal cross-sectional view of the state which shrunk the slide pipe which shows Embodiment 1 of the electric fan of this invention. It is the B section enlarged view of FIG. It is a bottom view of the state which removed the stand bottom plate of the electric fan of Embodiment 1. It is a longitudinal cross-sectional view of the state which extended the slide pipe of the electric fan of Embodiment 1. It is a fragmentary longitudinal cross-sectional view of the state which shrunk the slide pipe which shows Embodiment 2 of the electric fan of this invention. It is a bottom view of the state which removed the bottom plate of the stand of the electric fan of Embodiment 2. 6 is a longitudinal sectional view of a slider according to a second embodiment. FIG. 6 is a bottom view of a slider according to Embodiment 2. FIG. It is a fragmentary longitudinal cross-sectional view of the state which shrunk the slide pipe of the conventional electric fan. It is a longitudinal cross-sectional view of the state which extended the slide pipe of the conventional electric fan.

Explanation of symbols

1, 21, 101 Slider 1a, 21a, 101a Guide portion 1b, 21b, 101b Mounting portion 1c, 21c Upper tube portion 2,102 Slide pipe 2a, 102a Blower holding portion 2b Screw 3,103 Stand 3a, 103a Guide rail 3b, 103b Cap 3c Leg 3d Post 3e Inner cylinder 4,104 Operation circuit 5,105 Lead wire 6,106 Bottom plate 10,110 Fan 21d Lower cylinder 21e Chamfer

Claims (2)

A slide pipe for supporting a blower comprising a blower fan and a motor;
A stand provided with a guide rail and supporting the slide pipe slidably up and down via the guide rail;
A lead wire wired from the motor through the slide pipe to an operation circuit installed in the stand;
A slider having an attachment portion attached to the lower end of the slide pipe, and a guide portion that extends downward from the attachment portion and engages with the guide rail;
Equipped with a,
The electric fan according to claim 1, wherein the slider is provided with the guide portion on an outer peripheral portion, and has a lower cylinder portion that accommodates the coil winding portion of the lead wire in a state where the slide pipe is most contracted . The electric fan according to claim 1 , wherein a chamfered portion is formed inside a lower end portion of the lower cylindrical portion of the slider.

Images