CN105864092B - Height adjusting device for fan and fan with height adjusting device - Google Patents
Height adjusting device for fan and fan with height adjusting device Download PDFInfo
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- CN105864092B CN105864092B CN201610369791.4A CN201610369791A CN105864092B CN 105864092 B CN105864092 B CN 105864092B CN 201610369791 A CN201610369791 A CN 201610369791A CN 105864092 B CN105864092 B CN 105864092B
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- fan
- piston
- pipe body
- pipe
- height adjusting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a height adjusting device for a fan and the fan with the same, wherein the height adjusting device comprises: the upper end of the first pipe body is open, and the lower end of the first pipe body is provided with a pipe plug; the lower end of the second pipe body is telescopically inserted into the upper end of the first pipe body; the piston is arranged in the upper end of the first pipe body and is connected with the lower end of the second pipe body, a damping air cavity is defined among the lower surface of the piston, the inner wall surface of the first pipe body and the upper surface of the pipe plug, and the piston and the pipe plug are constructed to extrude the damping air cavity to slow down the descending speed of the piston when the piston moves downwards. According to the height adjusting device for the fan, the convenience and the safety of a user for adjusting the height of the fan are improved.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a height adjusting device for a fan and the fan with the height adjusting device.
Background
In the conventional fan, during the height adjustment process, a user usually holds the fan body with one hand, and then unscrews the cable nut or the knob with the other hand, moves the fan body to a target position, and then screws the cable nut or the knob to fix the fan body on the support rod. Because both hands work simultaneously, the user generally feels hard and inconvenient, especially, when the fan body slips carelessly, the fan body that falls rapidly causes great impact to spare parts such as fan box and cable nut, may even clip or pound the user's both hands.
Disclosure of Invention
The present invention aims to solve at least one of the above technical problems to a certain extent.
Therefore, the invention provides a height adjusting device for a fan, which is convenient to use and high in safety.
A height adjusting apparatus for a fan according to an embodiment of a first aspect of the present invention includes: the upper end of the first pipe body is open, and the lower end of the first pipe body is provided with a pipe plug; the lower end of the second pipe body is telescopically inserted into the upper end of the first pipe body; the piston is arranged in the upper end of the first pipe body and is connected with the lower end of the second pipe body, a damping air cavity is defined among the lower surface of the piston, the inner wall surface of the first pipe body and the upper surface of the pipe plug, and the piston and the pipe plug are constructed to extrude the damping air cavity when the piston moves downwards so as to slow down the descending speed of the piston.
According to the height adjusting device for the fan, disclosed by the embodiment of the invention, the piston is arranged in the upper end of the first pipe body and is connected with the lower end of the second pipe body, and the damping air cavity is jointly defined among the lower surface of the piston, the inner wall surface of the first pipe body and the upper surface of the pipe plug, so that after the cable nut or the knob is loosened, the second pipe body, the fan body and the piston can slowly fall due to the buffering effect of the damping air cavity, the phenomenon that the rapidly falling fan body causes large impact on parts such as the fan box and the cable nut is avoided, and the convenience and the safety for a user to adjust the height of the fan are improved.
In addition, the height adjusting device for the fan according to the embodiment of the present invention may further have the following additional technical features:
according to an embodiment of the present invention, the plug is fixedly provided at and closes a lower end of the first pipe, an inner wall surface of the first pipe is formed as a rough surface, and an air gap is formed between an outer wall surface of the piston and the inner wall surface of the first pipe.
According to an embodiment of the present invention, the pipe plug is provided with an air hole communicating with the damping air chamber, and the height adjusting device further includes a throttle plate configured to close the air hole to throttle the air in the damping air chamber when the piston presses the damping air chamber and to open the air hole when the piston moves upward.
According to one embodiment of the invention, the throttling element is movably arranged on the plug.
According to one embodiment of the invention, a first sealing ring is arranged between the pipe plug and the inner wall surface of the first pipe body.
According to one embodiment of the invention, the piston comprises a first tube section provided within the first tube body and a second tube section provided above the first tube section and within the second tube body.
According to one embodiment of the invention, at least two second sealing rings are arranged between the first pipe section and the inner wall surface of the first pipe body and spaced apart from each other in the vertical direction.
According to an embodiment of the present invention, the outer wall surface of the first pipe section is provided with at least two receiving grooves recessed inward in the radial direction of the piston, and the second sealing ring is mounted in the receiving grooves.
According to one embodiment of the invention, the lower surface of the piston is provided with at least one through hole communicating with the housing groove.
The fan according to the embodiment of the second aspect of the present invention has the height adjusting device for the fan according to the above-described embodiment, and since the height adjusting device for the fan according to the embodiment of the present invention has advantages of convenience in use and high safety, the fan according to the embodiment of the present invention also has advantages of convenience in use and high safety.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a cross-sectional view of a height adjustment device for a fan according to one embodiment of the present invention, wherein a piston is in a stationary state;
FIG. 2 is a cross-sectional view of a height adjustment device for a fan according to one embodiment of the present invention, wherein the piston is in a downward motion;
FIG. 3 is a partial cross-sectional view of a height adjustment device for a fan according to one embodiment of the present invention, wherein the piston is in a downward motion;
FIG. 4 is a sectional view of a height adjustment mechanism for a fan according to another embodiment of the present invention, wherein a piston is in a downward motion;
fig. 5 is a partial sectional view of a height adjusting apparatus for a fan according to another embodiment of the present invention, in which a piston is in a downward moving state.
Reference numerals:
a height adjusting device 100;
a first pipe 10;
a second tube 20;
a pipe plug 30; an air hole 31;
a piston 40; a first pipe section 41; a second tube section 42; a through hole 43;
a damper air chamber 50;
a throttle member 60;
a first seal ring 70;
a second seal ring 80;
an accommodating groove 90;
an air gap 91.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the conventional fan, during the height adjustment process, a user usually holds the fan body with one hand, and then unscrews the cable nut or the knob with the other hand, moves the fan body to a target position, and then screws the cable nut or the knob to fix the fan body on the support rod. Because both hands work simultaneously, the user generally feels hard and inconvenient, especially, when the fan body slips carelessly, the fan body that falls rapidly causes great impact to spare parts such as fan box and cable nut, may even clip or pound the user's both hands.
A height adjusting device 100 for a fan according to an embodiment of the present invention will be described with reference to fig. 1 to 5.
The height adjusting apparatus 100 for a fan according to an embodiment of the present invention may include: a first tube 10, a second tube 20 and a piston 40.
Specifically, as shown in fig. 1 to 5, the first tube 10 is open at an upper end thereof and provided with a plug 30 at a lower end thereof. The lower end of the second tube 20 is telescopically inserted into the upper end of the first tube 10. The lower end of the first pipe 10 is connected to the support base of the fan, the upper end of the second pipe 20 is connected to the fan, and the height of the fan can be adjusted by changing the depth of the second pipe 20 inserted into the first pipe 10.
The piston 40 is provided in the upper end of the first pipe 10 and connected to the lower end of the second pipe 20, and the lower surface of the piston 40, the inner wall surface of the first pipe 10 and the upper surface of the plug 30 together define a damping air chamber 50, and the piston 40 and the plug 30 are configured to press the damping air chamber 50 to slow down the descent speed of the piston 40 when the piston 40 moves downward.
In other words, after the user unscrews the cable nut or the knob, the damping air chamber 50 generates an upward acting force on the piston 40, the fan body, the second pipe body 20 and the piston 40 will slowly fall due to the buffering effect of the damping air chamber 50, and when the fan body falls to the target position, the user screws the cable nut or the knob, thereby completing the adjustment of the height of the fan.
That is, when the user needs to lower the height of the fan, the user does not need to apply any acting force to the fan body, only needs to loosen the cable nut or the knob before the fan body falls down, and then screws the cable nut or the knob after the fan body falls down to the target position, so that inconvenience caused by simultaneous operation of both hands of the user is avoided.
Therefore, according to the height adjusting device 100 for the fan of the embodiment of the present invention, the piston 40 is disposed in the upper end of the first tube 10 and connected to the lower end of the second tube 20, and the damping air chamber 50 is defined between the lower surface of the piston 40, the inner wall surface of the first tube 10 and the upper surface of the plug 30, so that after the nut or the knob is loosened, the second tube 20, the fan and the piston 40 can slowly fall due to the buffering effect of the damping air chamber 50, thereby preventing the rapidly falling fan from causing large impact on parts such as the fan box and the nut, and improving the convenience and safety of the user in adjusting the height of the fan.
In some embodiments of the present invention, as shown in fig. 4 to 5, the plug 30 is fixedly disposed at the lower end of the first pipe 10 and closes the lower end of the first pipe 10, the inner wall surface of the first pipe 10 is formed as a rough surface, and an air gap 91 is formed between the outer wall surface of the piston 40 and the inner wall surface of the first pipe 10.
That is, when the piston 40 moves upward, the external air can flow into the damping chamber from the air gap 91, and when the piston 40 moves downward, the air in the damping air chamber 50 is compressed and slowly flows out from the air gap 91. Therefore, under the condition of not increasing any part, an air gap 91 is formed between the outer wall surface of the piston 40 and the inner wall surface of the first pipe body 10, and a damping air cavity 50 is defined between the lower surface of the piston 40, the inner wall surface of the first pipe body 10 and the upper surface of the pipe plug 30, so that after the cable nut or the knob is loosened, the second pipe body 20, the fan body and the piston 40 can slowly fall due to the buffering effect of the damping air cavity 50, the phenomenon that the rapidly falling fan body causes large impact on the fan box, the cable nut and other parts is avoided, and the convenience and the safety of a user for adjusting the height of the fan are improved.
In other embodiments of the present invention, as shown in fig. 1 to 3, the pipe plug 30 is provided with an air hole 31 communicating with the damper gas chamber 50, and the height adjusting device 100 may further include a throttle member 60, the throttle member 60 being configured to close the air hole 31 to throttle the air in the damper gas chamber 50 when the piston 40 presses the damper chamber and to open the air hole 31 when the piston 40 moves upward. Wherein the orifice 60 is movably disposed on the plug 30.
That is, when the piston 40 moves downward, the throttle member 60 closes the air hole 31 on the pipe plug 30, and the gas in the damper gas cavity 50 can flow out slowly from the fit clearance between the throttle member 60 and the air hole 31, so that the gas in the damper gas cavity 50 can be discharged in a throttling manner, and the descending speed of the fan body, the second pipe body 20 and the piston 40 can be reduced; when the piston 40 moves upwards, along with the volume increase of the damping air cavity 50, the air pressure in the damping air cavity 50 is gradually reduced, the throttle sheet is pushed away by the external atmospheric pressure to open the air hole 31, the external air enters the damping air cavity 50, the internal and external air pressures of the first pipe body 10 are equal, the second pipe body 20 can be moved upwards by a user when a small acting force is applied, the depth of the second pipe body 20 inserted in the first pipe body 10 is reduced, and the height of the fan is easily changed by the user.
Optionally, a first sealing ring 70 is provided between the plug 30 and the inner wall surface of the first pipe 10. Therefore, the sealing performance between the pipe plug 30 and the first pipe 10 can be improved, and the gas in the damper gas chamber 50 is prevented from flowing out from between the pipe plug 30 and the first pipe 10.
In other embodiments of the present invention, as shown in fig. 1-5, the piston 40 may include a first tube section 41 and a second tube section 42, the first tube section 41 being disposed within the first tube 10, and the second tube section 42 being disposed above the first tube section 41 and within the second tube 20. At least two second sealing rings 80 are arranged between the first pipe section 41 and the inner wall surface of the first pipe body 10 at intervals in the vertical direction.
Wherein, the outer wall surface of the first pipe section 41 is provided with at least two accommodating grooves 90 which are inwards recessed along the radial direction of the piston 40, and the second sealing ring 80 is installed in the accommodating grooves 90. The lower surface of the piston 40 is provided with at least one through hole 43, and the through hole 43 communicates with the receiving groove 90. Wherein, the inner wall surface of the second sealing ring 80 is spaced from the circumferential wall of the receiving groove 90 by a predetermined distance.
When the piston 40 moves upwards, the second sealing rings 80 are respectively contacted with the bottom surfaces of the accommodating grooves 90, the through holes 43 on the lower surface of the piston 40 are sealed by the second sealing rings 80, and the gas in the damping gas cavity 50 cannot flow out of the air gaps 91, so that the thrust of the gas on the lower surface of the piston 40 is increased, a user can move the second pipe body 20 upwards when applying a small acting force, the depth of the second pipe body 20 inserted in the first pipe body 10 is increased, and the height of the fan is easily changed.
When the piston 40 moves downward, the second sealing rings 80 are respectively contacted with the top surfaces of the accommodating grooves 90, the through holes 43 on the lower surface of the piston 40 are communicated with the accommodating grooves 90, and the air gap 91 between the inner wall surface of the first pipe 10 and the outer wall surface of the piston 40 is communicated with the damping air cavity 50, so that the air in the damping air cavity 50 can slowly flow out from the air gap 91. Therefore, after the cable nut or the knob is loosened, the second pipe body 20, the fan body and the piston 40 can slowly fall due to the buffering effect of the damping air cavity 50, so that the fan body which rapidly falls can be prevented from causing large impact on parts such as a fan box, the cable nut and the like, and the convenience and the safety of a user for adjusting the height of the fan are improved.
The fan (not shown) according to an embodiment of the present invention has the height adjusting device 100 for a fan of the above-described embodiment, and since the height adjusting device 100 for a fan according to an embodiment of the present invention has advantages of convenience in use and high safety, the fan according to an embodiment of the present invention also has advantages of convenience in use and high safety.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "inner", "outer", "horizontal", "vertical", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (9)
1. A height adjustment device for a fan, comprising:
the upper end of the first pipe body is open, and the lower end of the first pipe body is provided with a pipe plug;
the lower end of the second pipe body is telescopically inserted into the upper end of the first pipe body;
the piston is arranged in the upper end of the first pipe body and is connected with the lower end of the second pipe body, a damping air cavity is defined among the lower surface of the piston, the inner wall surface of the first pipe body and the upper surface of the pipe plug, and the piston and the pipe plug are constructed to extrude the damping air cavity when the piston moves downwards so as to slow down the descending speed of the piston;
the pipe plug is fixedly arranged at the lower end of the first pipe body and seals the lower end of the first pipe body, the inner wall surface of the first pipe body is formed into a rough surface, and an air gap is formed between the outer wall surface of the piston and the inner wall surface of the first pipe body.
2. The height adjusting apparatus for a fan as claimed in claim 1, wherein the pipe plug is provided with an air hole communicating with the damping air chamber, the height adjusting apparatus further comprising a throttle member configured to close the air hole when the piston presses the damping air chamber to throttle the air in the damping air chamber and to open the air hole when the piston moves upward.
3. A height adjustment assembly for a fan as set forth in claim 2 wherein said throttle member is movably disposed on said plug.
4. The height adjusting apparatus for a fan as claimed in claim 1, wherein a first packing is provided between the plug and an inner wall surface of the first pipe body.
5. The height adjustment assembly for a fan of claim 1, wherein the piston includes a first tube section and a second tube section, the first tube section being disposed within the first tube section, the second tube section being disposed above the first tube section and within the second tube section.
6. The height adjusting apparatus for a fan according to claim 5, wherein at least two second sealing rings are provided between the first pipe section and the inner wall surface of the first pipe body, the second sealing rings being spaced apart in a vertical direction.
7. The height adjusting apparatus for a fan as claimed in claim 6, wherein the outer wall surface of the first pipe section is provided with at least two receiving grooves recessed inward in a radial direction of the piston, and the second packing is mounted in the receiving grooves.
8. The height adjusting apparatus for a fan as claimed in claim 7, wherein the piston is provided at a lower surface thereof with at least one through hole, the through hole communicating with the receiving groove.
9. A fan comprising the height adjusting apparatus for a fan according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610369791.4A CN105864092B (en) | 2016-05-27 | 2016-05-27 | Height adjusting device for fan and fan with height adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610369791.4A CN105864092B (en) | 2016-05-27 | 2016-05-27 | Height adjusting device for fan and fan with height adjusting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105864092A CN105864092A (en) | 2016-08-17 |
| CN105864092B true CN105864092B (en) | 2021-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610369791.4A Active CN105864092B (en) | 2016-05-27 | 2016-05-27 | Height adjusting device for fan and fan with height adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105864092B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110021727B (en) * | 2018-01-10 | 2021-09-14 | 宁德时代新能源科技股份有限公司 | One-way vent valve, secondary battery's top cap subassembly and secondary battery |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915251B (en) * | 2010-08-25 | 2012-09-19 | 中国石油集团西部钻探工程有限公司 | Telescopic hydraulic cylinder |
| CN102588319A (en) * | 2012-03-07 | 2012-07-18 | 美的集团有限公司 | Lifting mechanism for fan |
| CN103836577B (en) * | 2012-11-27 | 2016-07-13 | 深圳市海洋王照明工程有限公司 | Lamp lifting rod and use the light fixture of this lamp lifting rod |
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2016
- 2016-05-27 CN CN201610369791.4A patent/CN105864092B/en active Active
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| CN105864092A (en) | 2016-08-17 |
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