JP2001012383A - Electric fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the inadvertent vertical movement of a slide pipe, in an elevating device for adjusting the height of a fan body. SOLUTION: A recessed groove 31 is formed on the outer periphery surface of a slide pipe 7 on whose upper end a fan body is provided and plural engaging recessed parts 32 are formed while being lined up vertically in this recessed groove 31. A cap 22 is provided on the upper end of a prop base 6 assembling the slide pipe 7 vertically slidably. An elastic piece 38 formed integrally with this cap 22 is inserted in the recessed groove 31. A projected engaging part 39 for engaging/disengaging elastically to/from respective engaging recessed parts 32 is formed on the tip of the elastic piece 38. A lock button 33 operated by an user is provided vertically slidably between the elastic piece 38 and the outer wall 35 of the cap 22. The engagement between the engaging recessed part 32 and engaging part 39 is maintained in such state that the lock button 33 is lowered. The engaging part 39 can be engaged/disengaged against the engaging recessed part 32 in such state that the lock button 33 is raised.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a fan having a lifting device.

[0002]

SUMMARY OF THE INVENTION
A support body provided at the upper end thereof with a blower including a blade driven by a motor and a guard portion covering the blade is attached to a support base and an inside of the support base so as to be vertically movable, and upward from the support base. The height of the blower can be adjusted by using a slide pipe that is a sliding rod that protrudes.

[0003] As a conventional elevating and lowering device for a fan, for example, one described in Japanese Utility Model Publication No. 7-17917 is known. The lifting device described in this publication urges the slide pipe upward with an urging force balanced with the weight including the blower by a spring body provided between the lower end of the slide pipe and the upper end of the sliding rod. I am trying to do it. Also, in order to restrict the vertical movement of the slide pipe, an operation button urged by a spring is provided as a locking means on a cap provided at the upper end of the support base, and the operation button is provided on the outer peripheral surface of the slide pipe. A locking recess that directly engages and disengages is formed.

In Japanese Utility Model Laid-Open Publication No. 6-25594,
In combination with the configuration described in Japanese Utility Model Publication No. 7-17917, a plurality of engagement recesses are formed vertically on the outer peripheral surface of the slide pipe, and the engagement recesses are elastically engaged and disengageable. A lifting device in which an engaging portion is provided on a cap is described.

However, in the elevating device described in Japanese Utility Model Publication No. 7-17917, when the operation button is at a position where it is not engaged with the locking recess, that is, when the slide pipe is not locked, When the blades and guards are disassembled during storage, the balance between the spring body and the weight is broken, and there is a problem that the slide pipe is inadvertently moved up and down by the urging force of the spring body.

In the lifting device described in Japanese Utility Model Application Laid-Open No. 6-25594, the engagement between the engagement recess and the engagement portion is easily performed when the user moves the blower up and down together with the slide pipe. When the slide pipe is in the up / down position where it is not locked by the engagement between the locking recess and the operation button, it is difficult to carry the electric fan with the handle of the head in the blower. , There is a problem that the slide pipe is inadvertently moved with respect to the support base.

The present invention is intended to solve such a problem, and can prevent a slide rod such as a slide pipe from inadvertently moving up and down, reduce the number of parts, and improve manufacturability. It is intended to provide a fan that can be used.

[0008]

According to a first aspect of the present invention, in order to achieve the above object, a blower is provided at an upper end portion, and a support is provided as a lifting device for lifting and lowering the blower. In a fan having a support base and a sliding rod mounted on the support base so as to be movable up and down, the sliding rod is provided with a plurality of engagement receiving portions arranged vertically and provided on the support base. An engaging portion for elastically engaging and disengaging the engagement receiving portion of the sliding rod; holding the engaging portion in an engaged state with the engagement receiving portion; Is provided with a locking means capable of releasing.

The sliding rod is held by the support base by elastically engaging the engaging portion of the support base with the engagement receiving portion of the sliding rod. When the blower is disassembled or the fan is carried with the blower, the sliding rod may inadvertently move up and down with respect to the support base by holding the engagement of the fan by the locking means. It is surely prevented. Further, in the state where the holding by the locking means is released, the engaging portion can be elastically engaged with and disengaged from the engagement receiving portion, and the sliding rod can be moved up and down with respect to the support base, whereby The blower can be raised and lowered.

According to a second aspect of the present invention, in the electric fan according to the first aspect of the present invention, a spring is provided for urging the sliding rod upward with respect to the support base, and the locking means is biased by the spring. Thus, the state where the engaging portion is engaged with the engagement receiving portion is maintained.

Thus, the state in which the engagement portion is engaged with the engagement receiving portion is more securely held, and the slide rod is prevented from being inadvertently moved up and down with respect to the support base. You.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the electric fan of the present invention will be described below with reference to FIGS. Reference numeral 1 denotes a base, and a blower 3 is provided at an upper end of a column 2 erected on the base 1.

The column 2 constitutes a lifting device for raising and lowering the blower 3. The column 2 has a lower end fixed to the base 1, and is vertically slidable inside the column 6. A slide pipe 7 as an assembled sliding rod is provided. The slide pipe 7 protrudes upward from the support base 6, and the blower 3 is provided at an upper end of the slide pipe 7.

The blower 3 is provided with a slide pipe 7
Has a head 11 supported at the upper end thereof via a swing mechanism (not shown), and is rotatably driven by a motor (not shown) built in the head 11. Has 12 These blades 12 are removable guards
Covered by 13. A handle 14 is located above the head 11.
Are rotatably mounted.

Next, the structure of the support 2 will be described. The support base 6 is formed of a pipe, and has a base mounting portion 21 fixed to the base 1 at a lower end portion. On the other hand, a cylindrical cap 22 is fitted and fixed to the upper end of the support base 6. The cap 22 is made of an elastic material such as plastic. Further, a flange 23 is provided at the lower end of the slide pipe 7 which is located in the support base 6 and which can move up and down. On the other hand, the flange 23 is provided above the inner peripheral surface of the support base 6. The stopper projection 24 is formed to protrude. Thereby, the slide pipe 7 is prevented from coming off with respect to the support base 6. Further, at the lower end of the slide pipe 7, a spring 26 in the form of a spring is provided. One end of the spring body 26 is fixed to the slide pipe 7, and a hole 27 formed on the other end is hooked on a hook 28 formed on the cap 22. As a result, the slide pipe 7 is urged upward with respect to the support base 6 by an urging force balanced with the weight including the blower 3.

Further, a concave groove 31 is formed on the outer peripheral surface of the slide pipe 7 along a vertical direction which is a longitudinal direction thereof. On the inner surface in the concave groove 31, an engagement recess 32 is formed as a plurality of engagement receiving portions arranged vertically. On the other hand, the cap 22 has on one side a lock button assembling portion 34 for assembling a lock button 33 as a locking means operated by a user. The lock button assembling portion 34 is formed in a substantially concave groove shape, and the lock button 33 is fitted slidably up and down within a predetermined range. In addition, a through hole 36 is formed in the outer wall 35 of the lock button assembling portion 34, and a finger hook 37 formed by projecting the lock button 33 upward and sideward through the through hole 36 is formed. It protrudes outward. Further, the cap 22 is located at a position inside the lock button assembly portion 34.
, An elastic piece 38 is formed integrally with the lower end thereof to hang down from its upper end. The elastic piece 38 is provided on the outer wall 35.
The elastic pipe is elastically deformed in a direction approaching and separating from the outer wall portion 35, and is slidably fitted in the concave groove 31 of the slide pipe 7. The lock button 33 is sandwiched between the outer wall 35 and the elastic piece 38. Further, an engaging portion 39 made of a projection is integrally formed on the lower end of the elastic piece 38 on the surface opposite to the lock button 33. The engaging portion 39 is elastically engaged with each of the engaging concave portions 32 of the slide pipe 7 in accordance with the elastic deformation of the elastic piece portion 38. As shown in FIGS. 1 and 3, the lock button 33 is positioned between the back side of the engagement portion 39 of the elastic piece portion 38 and the outer wall portion 35 in a state where the lock button 33 is lowered with respect to the cap 32. Thus, the elastic piece 38 cannot be elastically deformed, and the state in which the engaging portion 39 is engaged with the engaging concave portion 32 of the slide pipe 7 is maintained. On the other hand, as shown in FIGS.
With the lock button 33 raised, the lock button 33 is disengaged from the position on the elastic piece portion 38 on the back side of the engaging portion 39, and the elastic portion 38 elastically deforms the engaging portion 39 from the engaging recess 32. It is possible to come off.

Next, the operation of the above configuration will be described. When the fan is used, the height of the blower 3 can be adjusted by moving the slide pipe 7 up and down with respect to the support base 6 in the support body 2. At that time, FIG.
As shown in FIG. 3 and FIG. The pipe 7 is held at a predetermined height. Moreover, when the lock button 33 is lowered with respect to the cap 32, the lock button 33 is located between the back side of the engagement portion 39 of the elastic piece portion 38 and the outer wall portion 35, so that the engagement portion The state where 39 is engaged with the engaging recess 32 of the slide pipe 7 is securely held. In other words, the lock button on the cap 22
If the lock button 33 does not come off from the position on the elastic piece portion 38 on the back side of the engagement portion 39, the engagement portion 39
Cannot be disengaged from the engagement recess 32.

That is, when the slide pipe 7 is moved up and down together with the blower 3, as shown in FIGS. 2 and 4, a finger is hooked on a finger hook 37 to slide the lock button 33 upward, and the elastic piece 38 The lock button 33 is disengaged from the position on the back side of the engaging portion 39 in the above, the holding by the lock button 33 is released, and the slide pipe 7 is slid up and down. At this time, the elastic piece 38 is elastically deformed,
The engaging portion 39 is disengaged from the engaging concave portion 32 of the slide pipe 7, and a click feeling is obtained. Then, the user presses the lock button with the engagement portion 39 engaged with the appropriate engagement recess 32.
33, slide it downward, and engage the engaging
The state of engagement with 32 is maintained. In this manner, the height of the blower 3 can be adjusted by, for example, moving the lock button 33 up and down with one hand and moving the blower 3 up and down with the other hand. The operation of this adjustment is easy, and the same operability as before can be secured.

As described above, the state in which the engagement between the engagement portion 39 and the engagement recessed portion 32 is maintained by the lock button 33 is reliably maintained, so that the guard portion 13 and the blade 12 are removed during assembly or storage. Even if the load applied to the slide pipe 7 is changed by disassembling the blower 3,
Carrying an electric fan with the handle 14 of 11
Even when a load is applied to the side, the slide pipe 7 is reliably prevented from inadvertently moving up and down with respect to the support base 6.

As shown in FIG. 2 and FIG.
In the state where 39 is located between the engaging recesses 32, the slide pipe 7 can move up and down with respect to the support base 6.
The engaging portion 39 engages with the engaging concave portion 32 while the slide pipe 7 descends or ascends by a distance less than the pitch therebetween,
The lock button 33 holds the engagement between the engagement portion 39 and the engagement recess 32 when the lock button 33 is at the lowered position, that is,
Since the lock button 33 is at the position on the side moved by gravity, the slide pipe 7 does not inadvertently move up and down a long distance.

In the conventional fan, the operation button, which is a lock button, is directly engaged with the slide pipe, and the lock button is urged by a spring to maintain the engagement. Although the number of parts has been increased, this fan does not require a spring or the like for urging the lock button 33. Therefore, the number of parts can be reduced, the cost can be reduced, and the manufacturability can be improved.

Next, a second embodiment of the electric fan of the present invention will be described with reference to FIGS. Since the electric fan of the second embodiment has the same basic configuration as the electric fan of the first embodiment, parts corresponding to those of the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted. Will be mainly described.

In the second embodiment, a hole 27 at one end of a spring 26 having a spring shape for urging the slide pipe 7 upward with respect to the support base 6 is not provided with the cap 22 itself, but with a lock button 33.
Is hooked and engaged with a hook portion 41 formed at the lower end of the lock button 33, and the lock button 33 is urged downward by the spring body 26.

Thus, the state in which the engaging portion 39 of the cap 22 of the support base 6 is engaged with the engaging concave portion 32 of the slide pipe 7 is more reliably always maintained. Therefore, the slide pipe 7 is prevented from moving up and down with respect to the support base 6 more reliably. When the slide pipe 7 is moved up and down, the slide pipe 7 is moved up and down, and then the finger is released from the lock button 33 which has been raised to release the engagement between the engagement portion 39 and the engagement recess 32. , Lock button 33
Without returning the lock button 33 downward, the lock button 33 surely moves downward by the urging force of the spring body 26 and returns to the state in which the engagement between the engagement portion 39 and the engagement concave portion 32 is maintained. Operability is improved. Also, even when the engagement portion 39 is left in a position between the engagement recesses 32, the slide pipe 7 slightly moves up and down with respect to the support base 6, and the engagement portions 39 engage with the engagement recesses 32. Then, the lock button 33 is also lowered by the urging force of the spring body 26, and the engagement between the engagement portion 39 and the engagement recess 32 is maintained. As described above, according to the configuration of the second embodiment, the state in which the engagement between the engaging portion 39 and the engaging concave portion 32 is maintained can be always maintained, and the slide pipe 7 inadvertently moves up and down. This can be more reliably prevented.

It should be noted that the present invention is not limited to the above embodiment, and various modifications can be made. For example,
In the above embodiment, the slide pipe 7 is
Is provided, but this spring body 26 is not essential. Spring body as in the second embodiment
When the lock button 33 is also used for urging the lock button 33, the effect that the engagement between the engagement portion 39 on the support base 6 side and the engagement recess 32 on the slide pipe 7 side can be more reliably maintained can be obtained. Even if you do not balance with the weight of the blower 3 by 26, the lock button
The spring body 26 is not always necessary because the slide pipe 7 can be reliably held at each predetermined position (the position where the engaging portion 39 and each engaging concave portion 32 engage) by 33. Without the spring body 26, the force at the time of raising and lowering the slide pipe 7 slightly changes, but does not hinder practical use. And the spring body
Eliminating 26 would further reduce the number of parts, further reduce costs and improve manufacturability.

[0026]

According to the first aspect of the present invention, a plurality of engagement receiving portions are provided in a vertical direction on a sliding rod forming a lifting device together with a support base, and the engagement support of the sliding rod is provided on the support base. Along with providing an engaging portion that elastically engages and disengages with the portion,
When the blower is disassembled, or when the fan is transported with the blower, the engaging portion is held in a state of being engaged with the engagement receiving portion and the holding means capable of releasing the holding is provided. To
It is possible to reliably prevent the sliding rod from inadvertently moving up and down with respect to the support base, and the operability of raising and lowering the blower is not impaired. Further, since the number of parts can be reduced, manufacturability is improved.

According to the second aspect of the present invention, in addition to the effects of the first aspect of the present invention, there is provided a spring body for urging the sliding rod upward with respect to the support base, and the locking means is provided by this spring body. Since the urging is performed to maintain the state in which the engagement portion is engaged with the engagement receiving portion, it is possible to more reliably prevent the sliding rod from inadvertently moving up and down with respect to the support base.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a column showing a first embodiment of a fan according to the present invention, showing a state in which an engagement portion is engaged with an engagement receiving portion.

FIG. 2 is a cross-sectional view of the upper side, showing a state in which an engagement portion is disengaged from an engagement receiving portion.

FIG. 3 is an enlarged sectional view of a part of FIG. 1;

FIG. 4 is an enlarged sectional view of a part of FIG. 2;

FIG. 5 is a front view of the entire electric fan.

FIG. 6 is a perspective view of the vicinity of the cap;

FIG. 7 is a side sectional view of a part of a column showing a second embodiment of the electric fan according to the present invention, showing a state in which an engaging portion is engaged with an engaging receiving portion.

FIG. 8 is a side cross-sectional view of a part of the support body, showing a state in which an engagement portion is disengaged from an engagement receiving portion.

FIG. 9 is a perspective view of the same spring body and a lock button.

[Description of Signs] 2 support body 3 blower 6 support base 7 slide pipe (sliding rod) 26 spring body 32 engaging concave part (engaging receiving part) 33 lock button (engaging means) 39 engaging part

Claims (2)

[Claims] An air blower is provided at an upper end portion, and a support is provided as an elevating device for raising and lowering the blower. The support is mounted on a support base and a sliding member mounted on the support base so as to be vertically movable. In the electric fan having a moving rod, the sliding rod is provided with a plurality of engagement receiving portions which are arranged in the up-down direction, and is elastically detachably engaged with the support base portion with the engaging receiving portion of the sliding rod. An electric fan, comprising: an engaging portion that engages with the engaging portion; the engaging portion is held in a state of being engaged with the engaging receiving portion; 2. A spring body for urging a sliding rod upward with respect to the support base, and the locking means is urged by the spring body so that the engagement portion is moved to the engagement receiving portion. The electric fan according to claim 1, wherein the electric fan maintains an engaged state.