JPH0653794U - Fan height adjustment mechanism - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] Repulsion of springs etc. installed in the columns to completely avoid sudden accidents etc. due to pushing up of the blower device of the fan with the column extension mechanism. (EN) Provided is a fan capable of preventing a descent even when a body is removed, even when a height of a blower is changed without using a prop down prevention mechanism. [Structure] In addition to having a blower device that is supported so as to be movable up and down through columns inserted into a cylindrical body erected on a base,
At least one of the support column and the tubular body is provided with locking means that operates to prevent the column from descending only when it is extended to the maximum length, and is provided on the inner wall surface along the longitudinal direction of the tubular body. And an inclined piece having a hypotenuse inclined toward the axial center of the cylindrical body toward the opening, and a projection provided on the peripheral surface of the support column so as to face the inclined piece, and provided on the peripheral surface near the projection. It is composed of a resilient piece through a substantially U-shaped drilling groove.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fan, more specifically, a home that is appropriately placed in a room such as a parlor of a general household, a room such as a Western-style room, and is used to remove body heat of a human body or the like through blast mainly in the summer. For electric fan.

[0002]

[Prior art]

 Conventionally, in fans used in general households, etc., the fan can be fitted to the rotary shaft of the electric motor and the blower driven by the swinging device or the elevation device can be supported at a predetermined height. In addition, there is an electric fan having a column whose height position can be changed via the column expansion and contraction mechanism.

In the electric fan having the above-mentioned structure, since the prop supporting and supporting mechanism for the blower is provided with the prop extension / contraction mechanism, it is possible to reduce the number of talents of the packaging body for packaging the fan during distribution. Not only that, even when properly arranged in a room such as a tatami room or a Western-style room, the height of the blower can be changed by using the props extended.

[0004]

[Problems to be solved by the device]

 However, the above conventional fan has the following problems.

That is, the above-described conventional fan supporter having a supporter expansion / contraction mechanism facilitates the work of changing the height of the blower supported by the supporter support structure. There are some which are equipped with a resilient body such as a spring and a strut lifting mechanism for pushing the blower device upward through the resilient force of the resilient body. , Etc., easily contact the prop-up mechanism, etc., the blower is instantly pushed up to push up the face of an infant, etc., or even fingers or the like get caught in the blower, causing serious injuries, etc. May occur.

Therefore, in order to facilitate the work when changing the height of the blower, the elastic members such as the springs are removed from the strut expansion / contraction mechanism of the fan equipped with the strut lifting mechanism. This will prevent accidental accidents such as the above-mentioned sudden pushing of the air blower upwards, but anyway, as mentioned above, the projectiles that constantly urge the air blower upward As a result of the removal, the strut extension mechanism of the fan requires a strut lowering prevention mechanism or the like for preventing the blower from descending when the height of the blower is changed.

Therefore, when the projectiles such as springs are removed from the strut extension mechanism of the fan equipped with the strut lifting mechanism via the projectiles as described above, the height of the blower is changed. When a fan is used, a column lowering prevention mechanism or the like for preventing the lowering of the blower is required not only for using the fan but also for safety. In any case, manufacture of a fan equipped with a column extension mechanism. The increase in cost is unavoidable, and the increase in the number of parts for assembling the column lowering prevention mechanism also makes the manufacture of the fan extremely complicated and cumbersome, which in turn lowers the productivity. Was there.

However, the present invention solves the above-mentioned problems, and in order to completely avoid a sudden accident or the like due to a fan having a strut expansion / contraction mechanism being unexpectedly pushed upward by a blower device, a bullet such as a spring is used. Even when the blower is removed, even if the prop is extended and the height of the blower is changed, it is possible to prevent the blower from descending without using a prop lowering prevention mechanism. The challenge is to provide an excellent fan.

[0009]

[Means for Solving the Problems]

 The present invention has taken the following means in order to solve the above problems.

That is, the present invention is provided with a blower device which is supported in a vertically movable manner through a pillar inserted into a cylindrical body erected on a base, and at least one of the pillar and the cylindrical body. One of them is provided with a strut locking means that operates so as to prevent the strut from descending only when the strut is extended to the longest from the cylindrical body. An inclined piece which is provided on an inner wall surface of the cylindrical body along the longitudinal direction of the cylindrical body and has an oblique side inclined toward the axial direction of the cylindrical body toward the opening side of the cylindrical body; A protrusion is provided on the peripheral surface of the strut so as to face it, and has a protrusion that is in sliding contact with the hypotenuse of the inclined piece, and has a substantially U-shape formed on the peripheral surface near the protrusion. A height adjusting mechanism is provided which is composed of an elastic piece formed to impart a predetermined elastic force through the drilling groove. In point.

Further, a predetermined pressing force is applied to at least one of the support column and the tubular body, on both sliding contact surface portions of the support column that slides up and down in the tubular body and the tubular body that face each other. In addition, a column holding means for holding the column supporting the blower in the cylinder is provided.

[0012]

[Action]

 In the height adjusting mechanism of the electric fan having the above-mentioned configuration, the lowering of the strut is provided on at least one of the strut and the cylinder only when the strut extends the longest from the cylinder. A strut locking means that operates to prevent is provided, and the strut locking means is projectingly provided on the inner wall surface of the cylindrical body along the longitudinal direction of the cylindrical body, and the opening side of the cylindrical body is provided. In addition, it has both an inclined piece having a hypotenuse inclined in the axial direction of the cylindrical body, and a projection provided on the peripheral surface of the support column so as to face the inclined piece and slidably contacting the hypotenuse of the inclined piece. And a resilient piece formed to impart a predetermined resilient force through a substantially U-shaped drilling groove provided in the peripheral surface portion near the projection body. , The elastic piece formed on the pillar by pulling up the pillar, through the hypotenuse of the inclined piece of the tubular body. Each of the columns is pushed in the axial direction of the column to be retracted, and at the time when the column is extended to the maximum length, it is re-generated by the elastic force of itself at the peripheral edge of the opening of the cylindrical body, and then on the peripheral edge of the opening. It is possible to keep the extended state to the longest in order to completely prevent the column from descending.

Further, a predetermined pressing force is applied to at least one of the support column and the cylindrical body, on both sliding contact surface portions of the support column and the cylindrical body that slide vertically in the cylindrical body and the cylindrical body. Since a strut holding means for holding the strut supporting the blower in the cylinder can be provided, the strut supporting the blower can be provided without any special device. At any time, the height position of the air blower supported by the support can be freely adjusted by simply sliding it up and down.

[0014]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a fan, and reference numeral 1a denotes a fan main body provided with various operation switches such as air volume adjustment and a timer.

Reference numeral 2 denotes an air blower having a configuration in which a rotary cover 8 is wrapped around a rotary blade 8 formed of a molding material such as AS resin that is externally fitted to the rotary shaft of a four-pole capacitor motor (electric motor) 7. .

Reference numeral 3 denotes a cylindrical body 4 which is made of a resin material and which has a substantially oval horizontal cross section. 2 shows a base equipped with the strut extending / contracting mechanism 6.

4a is provided around the opening 4 in the vicinity of the periphery of the opening of the tubular body 4 with a predetermined interval, and the front end side is pressed so as to press the peripheral surface portion 5a of the pillar 5 inserted into the tubular body 4. A plurality of holding pieces that are inclined toward the axial center of the tubular body 4 are shown, and strut holding means is configured by frictional resistance generated between the holding pieces 4a and the sliding contact surface portion 6a of the peripheral surface portion 5a of the strut 5. Become.

The reference numeral 4 c is provided so as to project on the inner wall surface of the tubular body 4 along the longitudinal direction on the rear side of the tubular body 4, and the axial direction of the tubular body 4 ( The arrow A) shows a substantially triangular inclined piece having an inclined hypotenuse (4d).

As shown in FIG. 2 (a), 5b is provided on the rear peripheral surface portion 5a of the support column 5 so as to face the inclined piece 4c of the cylindrical body 4, and slides on the oblique side 4d of the inclined piece 4c. It is formed to have a contacting projection 5d and to give a predetermined resilience through a substantially U-shaped drilling groove 5c drilled in the peripheral surface portion 5a near the projection 5d. Shows a shell.

The elastic piece 5b formed on the rear peripheral surface portion 5a of the column 5 and the inclined piece 4c protruding from the inner wall surface on the rear side of the cylindrical body 4 are shown in FIG. As shown, when the support column 5 is pulled upward and slides in the cylindrical body 4 (arrow C), the elastic piece 5b of the support column 5 causes the projection 5d to be attached to the oblique side 4d of the inclined piece 4c. When the support column 5 is extended to the maximum length, it is pressed again in the axial direction of the support column 5 by slidable contact with the support column 5 and is retracted at the peripheral edge of the opening of the tubular body 4 again. Strut locking means is configured to lock the longest extending strut 5 to the cylindrical body 4 by retracting (arrow E) onto the peripheral edge of the opening through its own resilience. It will be.

Reference numeral 5 e denotes a stopper body which is integrally formed at the lower end portion of the support column 5 and which prevents the support column 5 from being removed from the cylindrical body 4.

At both ends of the stopper body 5e, as shown in (b) and (c) of the figure, a predetermined inner wall surface of the tubular body 4 along the longitudinal direction of the tubular body 4 is provided. A groove portion 5f that can be externally fitted is formed on a pillar guide rail rib 4e protrudingly provided with a width of.

The electric fan according to the present embodiment has the above-described configuration, but the case of using the electric fan according to the following will be described.

First, as shown in FIG. 3 (a), a support column expansion / contraction mechanism 6 is composed of a cylindrical body 4 erected on a base 3 of the fan 1 and a support column 5 slidably inserted into the cylindrical body 4. In addition, when the strut 5 is pulled upward in the tubular body 4 and extended to the longest, the strut extension mechanism 6 is extended to the longest. A resilient piece 5b formed on the rear peripheral surface portion 5a of the column 5 so as to be able to be locked to the tubular body 4, and an inclined piece 4c projectingly provided on the inner wall surface on the rear side of the tubular body 4. A strut locking means composed of is provided.

Therefore, when the pillar 5 is pulled upward and slides in the cylindrical body 4 (arrow C), the elastic piece 5b of the pillar 5 gradually moves through the oblique side 4d of the inclined piece 4c. When the support column 5 is pushed in the axial direction of the support column 5 and is immersed (arrow D), and the support column 5 is extended to the maximum length, as shown in FIG. Part of the pillar 5 which is extended and retracted (arrow E) on the peripheral edge of the opening through its own resilience to completely prevent the descent of the longest extended strut 5 and to keep the extended state completely. At the same time, the elastic piece 5b protruding and retracting on the peripheral edge of the opening of the cylindrical body 4 is pushed in the axial direction of the support column 5 to be retracted, so that the support column extended the longest is pressed down. You can instantly contract without doing anything.

Further, the support column expansion / contraction mechanism 6 has a plurality of holding pieces 4a inclined toward the axial direction of the tubular body 4 toward the tip end in order to press the peripheral surface portion 5a of the column 5 inserted into the tubular body 4. A strut holding means for generating frictional resistance is provided on the sliding contact surface portion 6a with the strut 5 via the.

Therefore, as shown in FIG. 3 (a), the blower device 2 supported by the support column 5 which is stretched by instantly pulling up the support column 5 (arrow C) and extending without using any special device or the like. Can always be kept constant at a predetermined height position, and at any time, the support column can be easily slid up and down to freely adjust the height position of the blower supported by the support column. You can also do it.

In addition, in the above-mentioned embodiment, the column provided with the column expansion and contraction mechanism includes an elastic piece formed by applying elastic force to the rear peripheral portion of the column and the rear side of the cylindrical body. The column locking means is composed of an inclined piece protruding from the inner wall surface of the column, but the location of the column locking means is not limited to the rear side of both the column and the column. However, they may be on the front side and / or on the both sides, and the specific number, forming location, etc. of the strut locking means are not necessarily limited.

Further, in the above-mentioned embodiment, the column provided with the column locking means is provided around the periphery of the opening of the cylindrical body at a predetermined interval and is inserted into the cylindrical body. A structure in which a plurality of holding pieces are inclined toward the tip end side in the axial direction of the cylindrical body so as to press the peripheral surface portion of the column, and a predetermined frictional resistance is generated on the sliding contact surface portion with the peripheral surface portion of the column. Although the strut holding means consisting of is provided, the strut holding means in the present invention is not necessarily limited to this, and, for example, the strut holding elastic force or elastic force applied to the strut can be used. The protrusion (not shown) may be formed so that a predetermined pressing force is applied to the inner wall surface of the cylindrical body, and the specific mechanism, quantity, forming position, etc. of the column holding means are limited. It is said that it is not required, and is not necessarily an essential requirement in the present invention. There is no end.

However, the concrete shape and expansion / contraction mechanism of the cylindrical body and the support pillars that form the support pillar expansion / contraction mechanism of the fan according to the present invention are by no means limited, and all other specific configurations of each part are not limited. The design can be arbitrarily changed within the scope intended by the present invention.

[0032]

[Effect of device]

 As described above, according to the present invention, at least one of the support column and the cylindrical body is provided with a support that is operated to prevent the support column from descending only when the support column extends the longest from the cylindrical body. A column locking means is provided, and the column locking means is projectingly provided on the inner wall surface of the cylinder along the longitudinal direction of the cylinder, and the axis of the cylinder is closer to the opening of the cylinder. A slanting piece having a slanted side inclined in the core direction, and a projecting body projectingly provided on the peripheral surface portion of the support column so as to face the slanting side and slidingly contacting the slanting side of the slanting piece, and the vicinity of the projecting body A height adjusting mechanism including a resilient piece formed to impart a predetermined resilient force through a substantially U-shaped drilling groove formed in the peripheral surface portion of Therefore, by pulling up the pillar, the elastic piece formed on the pillar is inserted through the hypotenuse of the inclined piece of the tubular body. Each of the columns is pushed in the axial direction of the column to be retracted, and at the time when the column is extended to the maximum length, it is re-generated by the elastic force of itself at the peripheral edge of the opening of the cylindrical body, and then on the peripheral edge of the opening. It is possible to keep the column extended to the longest in order to completely prevent the column from descending, and press the elastic piece that has emerged on the opening peripheral edge of the cylinder in the axial direction of the column. It is also possible to instantly retract the struts that have been extended the longest by pushing them in and depressing them without applying any downward force.

Further, a predetermined pressing force is applied to at least one of the support column and the tubular body, on both sliding contact surface portions of the support column and the tubular body that slide vertically in the tubular body and the tubular body. Since a strut holding means for holding the strut supporting the blower in the cylinder can be provided, the strut supporting the blower can be provided without any special device. At any time, the height position of the air blower supported by the support can be freely adjusted by simply sliding it up and down.

Therefore, even if the elastic body such as the spring is removed in order to completely avoid a sudden accident or the like due to the unexpected upward pushing of the fan having the strut expansion / contraction mechanism, the longest It is possible to completely prevent the downward movement of the air blower positioned through the extended prop, and, as in the past, no special device such as a prop lowering prevention device or a lock mechanism is required. Therefore, not only the manufacturing cost of the fan can be reduced, but also the production efficiency can be improved by reducing the number of parts and simplifying the manufacturing process of the fan. I arrived.

[Brief description of drawings]

FIG. 1 shows a fan according to the present invention, in which FIG. 1 (a) is a perspective view, and FIG. 1 (b) is a partial cross-sectional side view in the vicinity of the column expansion / contraction mechanism of FIG. 1 (a).

FIG. 2 shows each main part of the fan of the present invention, FIG. 2 (a) is an enlarged view of the vicinity of the protruding piece, and FIG. 2 (b) is AA of FIG. 1 (b).
1B is a sectional view taken along line BB in FIG. 1B.

3A and 3B show an operating state of a strut locking means provided in a strut extending / contracting mechanism of the fan of the present invention, wherein FIG. 3A is an operating state diagram and FIG.

[Explanation of symbols]

 1 ... Fan 1a ... Fan body 2 ... Blower 3 ... Base 4 ... Cylinder 4c ... Slanting piece 4d ... Slope 4e ... Guide rail rib 5 ... Post 5a ... Surface 5c ... Drilling groove 5d ... Projection 5e ... Stopper Body 5f ... Groove 6 ... Strut extension mechanism

Claims (3)

[Scope of utility model registration request] 1. A blower (2) supported movably up and down through a support (5) inserted into a cylindrical body (4) standing on a base (3), and the support (5) or at least one of the cylindrical body (4), the column (5) is the cylindrical body.
(4) A strut locking means is provided which operates to prevent the strut (5) from descending only when the strut (5) is extended to the longest, and the strut locking means is provided on the cylindrical body (4). It has a slanted side (4d) protruding from the inner wall surface of the tubular body (4) along the longitudinal direction and inclined toward the axial direction of the tubular body (4) toward the opening of the tubular body (4). Inclined piece (4c) and the pillar to face the inclined piece (4c)
(5) has a protrusion (5d) protruding from the peripheral surface (5a) and slidably contacting the oblique side (4d) of the inclined piece (4c), and the protrusion.
An elastic piece (5b) formed to give a predetermined elastic force through a substantially U-shaped perforation groove (5c) formed in the peripheral surface portion (5a) near (5d). A height adjusting mechanism for an electric fan, which is configured by: 2. A pillar (5) slidable up and down in the cylinder (4) and at least one of the pillar (5) and the cylinder (4) and the cylinder (4). ) By applying a predetermined pressing force to both the sliding contact surface portions (6a) facing each other.
2. The height adjusting mechanism for an electric fan according to claim 1, further comprising strut holding means capable of holding a strut (5) supporting (2) in the cylindrical body (4). 3. The column supporting means is provided in the vicinity (4b) of the cylindrical body (4) in the vicinity of the peripheral edge of the opening and / or on the inner wall surface of the cylindrical body (4) so as to surround or face the cylindrical body (4). The height of the fan according to claim 2, wherein there are a plurality of holding pieces (4a) inclined toward the axial direction of the tubular body (4) toward the tip end so as to hold the support column (5) inserted in the tubular body (4). Adjustment mechanism.