CN216382941U

CN216382941U - Portable air duct structure for fan

Info

Publication number: CN216382941U
Application number: CN202123169902.2U
Authority: CN
Inventors: 严晓明; 李帅; 赵忠才
Original assignee: Shandong Best Garden Machinery Co ltd
Current assignee: Shandong Best Garden Machinery Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-04-26
Anticipated expiration: 2031-12-17

Abstract

The application discloses a duct structure for a portable fan, which belongs to the field of portable fans and is used for the fan, the duct structure comprises an outer sleeve and an inner sleeve, the outer sleeve is spliced with the inner sleeve, and the inner sleeve slides relatively in the outer sleeve and is locked and limited by a locking nut at the port of the outer sleeve when extending out of the outer sleeve; when the inner sleeve retracts to the outer sleeve, the inner sleeve is limited in the outer sleeve by a limiting ring connected at the bottom end of the outer sleeve. In view of above-mentioned technical scheme, this application can be through the improvement to the tuber pipe structure, realizes the regulation to tuber pipe length, and adapts to complicated changeable operation environment demand, and convenient operation, easily packing are transported simultaneously, have labour saving and time saving and operate and experience the advantage that feels good.

Description

Portable air duct structure for fan

Technical Field

The utility model belongs to the field of portable fans, and particularly relates to a duct structure for a portable fan.

Background

Portable fan is used for fields such as fire control operation, gardens maintenance mostly, and its portable fan adopts the tuber pipe as air supply channel more. Conventional tuber pipe structure adopts pipe fitting more than two sections, carry out fixed connection through terminal joint boss and joint recess between the adjacent pipe fitting, the tuber pipe adopts blow molding process shaping more often moreover, receive the influence of blow molding process, the inner wall thickness of tuber pipe is many inhomogeneous, the wall thickness is too thick can cause to connect the difficulty or unable normal connection between the tuber pipe of mutually supporting, the wall thickness is too thin then can cause the tuber pipe cooperation of mutually supporting pine partially, the tuber pipe rocks or drops easily during the operation. After conventional tuber pipe is connected, length during its operation is comparatively fixed, can't realize the demand of complicated changeable operation environment to tuber pipe length variation, and operation experience feels slightly less than enough.

Simultaneously, the tuber pipe structure that traditional portable fan used, it is all torn down every section of tuber pipe when the operation finishes packing, transporting, complex operation wastes time and energy.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an air pipe structure for a portable fan, which can adjust the length of an air pipe through improving the air pipe structure, is suitable for the requirements of complex and variable operation environments, is convenient to operate, is easy to package and transport, and has the advantages of time and labor saving and good operation experience.

In order to achieve the purpose, the utility model is realized by the following technical scheme:

the air pipe structure for the portable fan comprises an outer sleeve and an inner sleeve, wherein the outer sleeve is spliced with the inner sleeve, the inner sleeve slides relatively in the outer sleeve and is locked and limited by a locking nut at the port of the outer sleeve when extending out of the outer sleeve; when the inner sleeve retracts to the outer sleeve, the inner sleeve is limited in the outer sleeve by a limiting ring connected at the bottom end of the outer sleeve.

Further, the outer sleeve comprises a hollow cylindrical outer sleeve body, an external thread connected with the lock nut is processed at the port of the outer sleeve body, a closing-in part is arranged at the position, close to the port, of the outer sleeve body, and an annular limiting inclined plane is formed on the inner wall of the outer sleeve body by the closing-in part; the bottom department of urceolus body is provided with the spacing ring clamping part that is used for connecting the spacing ring.

Furthermore, locking openings are machined in the outer cylinder body at the external threads, and are uniformly distributed around the central axis of the outer cylinder body.

Further, the inner sleeve comprises a hollow cylindrical inner sleeve body, an inner sleeve limiting part formed by an annular structure is arranged at the bottom end of the inner sleeve body, and the inner sleeve limiting part is in contact with the closing-in part and limits the position when the inner sleeve extends out of the outer sleeve.

Furthermore, the limiting ring comprises a ring body with a groove formed in the ring body, the ring body is of a hollow cylindrical structure, and the inner wall of the bottom end of the ring body is provided with a ring body limiting part extending inwards.

Furthermore, the ring body is provided with a ring body clamping groove at a position close to the ring body limiting part, and the ring body clamping groove is clamped with the limiting ring clamping part at the bottom end of the outer barrel body.

Further, the locking nut comprises a locking body, a port part of the locking body, through which the inner sleeve passes, is provided with a locking limiting part, and the inner wall of the locking body is provided with an internal thread matched with the external thread in a threaded manner.

Furthermore, the excircle inclination alpha of the locking nut is 1-3 degrees.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the change of different lengths of the air pipe during operation is realized in a telescopic fixing mode, so that the requirement of complex and variable operation environments is met, an operator can relatively adjust the outer sleeve and the inner sleeve only by adjusting the locking nut, the packaging and transferring requirements can be easily met after the inner sleeve retracts to the outer sleeve, the operation is convenient, the time and the labor are saved, the experience feeling is good, and the operation comfort is greatly improved.

Drawings

FIG. 1 is a schematic view of the construction of the outer sleeve of the present invention.

Figure 2 is a schematic view of the inner sleeve of the present invention.

Figure 3 is a schematic view of the construction of the lock nut of the present invention.

Figure 4 is a schematic view of the internal structure of the lock nut of the present invention.

FIG. 5 is a schematic view of the stop collar of the present invention.

Fig. 6 is a schematic view of the present invention in an extended configuration.

Fig. 7 is a schematic view of the internal fit in the extended state.

Fig. 8 is a schematic view of the structure of the present invention in a retracted state.

Fig. 9 is a schematic view of the internal fit in a retracted state.

In the figure: 1. an outer sleeve; 2. an inner sleeve; 3. a lock nut; 4. a limit ring.

11. An outer cylinder body; 12. a spacing ring clamping part; 13. locking the opening; 14. a closing-in part; 15. and (4) external threads.

21. An inner cylinder body; 22. an inner cylinder limiting part; 23. the necking end of the outer cylinder.

31. Locking the body; 32. an internal thread; 33. and locking the limiting part.

41. A ring body; 42. a ring body limiting part; 43. grooving the ring body; 44. the ring body is clamped in the groove.

Detailed Description

The technical solution of the present invention will be further described and illustrated with reference to the following examples. It should be noted that the following paragraphs may refer to terms of orientation, including but not limited to "upper, lower, left, right, front, rear" and the like, which are all based on the visual orientation shown in the drawings corresponding to the specification, and should not be construed as limiting the scope or technical aspects of the present invention, but merely as facilitating better understanding of the technical aspects of the present invention by those skilled in the art.

Example 1

The utility model provides a portable is tuber pipe structure for fan, is connected through external screw thread 15 and lock nut 3's internal thread 32 including inner skleeve 2, the outer sleeve 1 of pegging graft on outer sleeve 1, the bottom of outer sleeve 1 is provided with the spacing ring clamping part 12 of installation spacing ring 4. The outer sleeve 1 comprises an outer sleeve body 11, a plurality of locking openings 13 are formed in the end portion of the outer sleeve body 11, which is processed with external threads 15, a closing-in portion 14 is arranged at the position, close to the port where the external threads 15 are located, of the outer sleeve body 11, the closing-in portion 14 forms an annular limiting inclined surface on the inner wall of the outer sleeve body 1, and the limiting inclined surface is in contact with an inner-sleeve limiting portion 22 at the tail end of the outer sleeve 2. The outer barrel body 11 is provided with a limiting ring clamping part 12 formed by a raised annular rib body at the bottom end of the outer barrel body, and the limiting ring clamping part 12 is connected with the limiting ring 4. The inner sleeve 2 comprises an inner sleeve body 21, the inner sleeve body 21 is provided with an outlet formed by an outer sleeve necking end 23, and an inner sleeve limiting part 22 is arranged at one end far away from the outer sleeve limiting end 23.

Example 2

The utility model provides a wind pipe structure for portable fan, wherein lock nut 3 include the locking body 31 of hollow cylindrical structure, seted up internal thread 32 on the inner wall of locking body 31, be provided with the spacing portion 33 of locking of inside extension in the one end of locking body 31, the spacing portion 33 of locking cooperates with the port of the urceolus body 11 of seting up locking opening 13. The outer circle inclination alpha of the locking body 31 is preferably 1-3 degrees, the structure and the connection relation of the rest parts are the same as those of any one of the embodiments, and the details are omitted here for avoiding the tedious text.

Example 3

The utility model provides a wind pipe structure for portable fan, wherein spacing ring 4 for the ring body 41 that the hollow cylindrical casing constitutes, the bottom of ring body 41 is processed to the spacing portion 42 of ring body that extends inwards and constitute the loop configuration, processes on the lateral wall of ring body 41 and has the ring body fluting 43 that runs through the lateral wall, ring body 41 is processed at the position department that is close to spacing portion 42 of ring body and is had the ring body joint groove 44 that the annular groove constitutes, ring body joint groove 44 is connected with spacing ring clamping part 12. The structure and connection relationship of the rest parts are the same as those described in any of the foregoing embodiments, and are not described herein again to avoid the tedious text.

On the basis of the above embodiments, the present invention continues to describe the technical features and functions of the technical features in the present invention in detail to help those skilled in the art fully understand the technical solutions of the present invention and reproduce them.

In the utility model, the limiting ring 4 is provided with the ring body open slot 43, so that the opening and closing of the limiting ring 4 can be realized. The inner diameter of the stop collar 4 after closing is slightly larger than the outer diameter of the position of the stop collar clamping part 12 on the outer sleeve 1. The limiting ring 4 and the outer sleeve 1 can relatively rotate around the axial direction. Meanwhile, the tail end of the limiting ring 4 is provided with a ring body limiting part 42 which extends inwards and forms an annular structure, and the ring body limiting part 42 is matched with the limiting ring clamping part 12 to realize the limiting of the outer sleeve 1 in the axial direction.

In the utility model, the outer sleeve 1 is connected with the limit ring 4 through the limit ring clamping part 12, two locking openings 13 are processed at the port position of the outer sleeve 1, and external threads 15 are processed on the outer sleeve 1 at the position of the locking openings 13. The middle position of the outer sleeve 1 is provided with a closing-in part 14, and the closing-in part 14 can enable the interior of the outer sleeve 1 to form two sections of inner cavities with different inner diameters. The inner diameter of the inner cavity close to the bottom end in the outer sleeve 1 is larger than the inner diameter of the inner cavity close to the port in the outer sleeve 1. The closing-in part 14 forms a limit inclined plane with an inner diameter gradually reduced in the outer sleeve 1, and the limit inclined plane can contact with the inner-cylinder limit part 22 to limit the drawing length of the inner-cylinder body 21 relative to the outer-cylinder body 11.

In the utility model, the inclination alpha of the outer circle of the locking nut 3 can be selected to be 1-3 degrees, one end of the locking nut 3 is of an open structure, the other end of the locking nut 3 is of a closing structure, the closing end is provided with a locking limiting part 33, the locking limiting part 33 is provided with an inner diameter smaller than the port of the external thread 15, so that the port of the external thread 15 is extruded in the screwing process, the inner wall of the external cylinder body 11 at the port is clamped with the outer wall of the internal cylinder body 21, and the axial movement between the external cylinder body 11 and the internal cylinder body 21 is limited.

When the inner cylinder body 21 is positioned in the outer cylinder body 11, i.e. in the retraction state, the tail end of the inner cylinder body 21 is limited in the outer cylinder body 11 by the ring body limiting part 42 on the ring body 41, the outer sleeve 1 and the inner sleeve 2 in the fully retraction state are suitable for packaging and transportation,

finally, although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description of the present description is for clarity reasons only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. The utility model provides a duct structure for portable fan, includes outer sleeve (1), inner skleeve (2), outer sleeve (1) is pegged graft with inner skleeve (2), its characterized in that: the inner sleeve (2) slides relatively in the outer sleeve (1) and is locked and limited by a lock nut (3) at the port of the outer sleeve (1) when extending out of the outer sleeve (1); when the inner sleeve (2) retracts to the outer sleeve (1), the inner sleeve is limited in the outer sleeve (1) by a limiting ring (4) connected with the bottom end of the outer sleeve (1).

2. The wind pipe structure for the portable fan according to claim 1, characterized in that: the outer sleeve (1) comprises a hollow cylindrical outer sleeve body (11), external threads (15) connected with the lock nut (3) are processed at the port of the outer sleeve body (11), a closing-in part (14) is arranged at the position, close to the port, of the outer sleeve body (11), and the closing-in part (14) forms an annular limiting inclined plane on the inner wall of the outer sleeve body (11); the bottom of the outer barrel body (11) is provided with a limiting ring clamping part (12) used for being connected with a limiting ring (4).

3. The wind pipe structure for the portable fan according to claim 2, characterized in that: locking openings (13) are machined in the outer barrel body (11) at the position of the external thread (15), and the locking openings (13) are uniformly distributed around the central axis of the outer barrel body (11).

4. The duct structure for the portable fan according to claim 3, characterized in that: the inner sleeve (2) comprises a hollow cylindrical inner sleeve body (21), an inner sleeve limiting part (22) formed by an annular structure is arranged at the bottom end of the inner sleeve body (21), and the inner sleeve limiting part (22) is in contact with and limited by the closing-in part (14) in the state that the inner sleeve (2) extends out of the outer sleeve (1).

5. The duct structure for the portable fan according to claim 4, characterized in that: the limiting ring (4) comprises a ring body (41) provided with a ring body groove (43), the ring body (41) is of a hollow cylindrical structure, and a ring body limiting part (42) extending inwards is arranged on the inner wall of the bottom end of the ring body limiting ring.

6. The duct structure for the portable fan according to claim 5, characterized in that: the ring body (41) is provided with a ring body clamping groove (44) at a position close to the ring body limiting part (42), and the ring body clamping groove (44) is clamped with the limiting ring clamping part (12) at the bottom end of the outer barrel body (11).

7. The duct structure for the portable fan according to claim 6, characterized in that: the locking nut (3) comprises a locking body (31), a port part of the locking body (31) for the inner sleeve (2) to pass through is provided with a locking limiting part (33), and the inner wall of the locking body (31) is provided with an internal thread (32) matched with the external thread (15) in a threaded manner.

8. The duct structure for portable blower according to claim 7, characterized in that: the excircle inclination alpha of the locking nut (3) is 1-3 degrees.