CN203189304U

CN203189304U - Fan lifting mechanism

Info

Publication number: CN203189304U
Application number: CN2013200676621U
Authority: CN
Inventors: 郑立平
Original assignee: Airmate Electrical Shenzhen Co Ltd
Current assignee: Airmate Electrical Shenzhen Co Ltd
Priority date: 2013-02-05
Filing date: 2013-02-05
Publication date: 2013-09-11
Anticipated expiration: 2023-02-05

Abstract

The utility model discloses a fan lifting mechanism which comprises a stand pipe (1), a telescopic pipe (2) arranged on the upper portion of the stand pipe (1), a sliding block (3) which is fixedly connected to the top of the stand pipe (1) and can slide inside the telescopic pipe (2) and a locking mechanism (4). The fan lifting mechanism has the advantages that the telescopic pipe can stably move in the lifting process because the structure of the sliding block is adopted by the fan lifting mechanism and the telescopic pipe is good in stability when being locked by the locking mechanism.

Description

Fan lifting mechanism

Technical Field

The utility model relates to a daily life articles for use field, more specifically say, relate to a fan elevating system.

Background

In the prior art, most common lifting mechanisms used in fans adopt a combined mechanism of a friction plate and a spring to realize locking or loosening of lifting, the locking force of the lifting mechanisms comes from the acting force of the spring, and the mechanism has a complex structure and poor stability during work locking; and the magnitude of spring force can attenuate gradually along with the lapse of time, and the phenomenon that elevating system can appear inefficacy, organism is fixed insecure, automatic landing when long-term operation has seriously influenced the normal use of fan.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect that is arranged in the elevating system of fan to lose efficacy easily of prior art for a long-term work, it is firm to provide a locking, uses simple and convenient fan elevating system.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model constructs a fan lifting mechanism, which comprises an upright tube, a telescopic tube arranged above the upright tube, a sliding block capable of sliding in the telescopic tube and a locking mechanism; the telescopic pipe comprises a pipe body and a locking part arranged at the bottom end of the pipe body; the sliding block is fixedly connected to the top of the upright tube; the locking mechanism comprises a fastening piece sleeved on the locking part and a trip piece rotatably arranged on the fastening piece; when the trip piece is rotated, the trip piece is matched with the fastening piece to enable the locking part to press or loosen the upright tube.

In the fan lifting mechanism of the present invention, the locking mechanism further comprises a latch, a buckle, a connecting rod, and a locking member; the fastening piece comprises a fastening ring, a first flange and a second flange, wherein the first flange and the second flange are arranged at two ends of the fastening ring; the trip piece comprises a trip body and a pressing part which is arranged on the trip body and is in a convex shape; one end of the bolt is clamped on the pulling body, and the other end of the bolt is connected with the buckle sheet; one end of the connecting rod is sleeved on the bolt and can rotate around the bolt, and the other end of the connecting rod penetrates through the first flange; one end of the clamping piece penetrates through the second flange and is connected with the connecting rod; when the pulling body is rotated, the pressing portion may be in sliding contact with an outer side of the first flange.

In the fan lifting mechanism of the present invention, the locking member includes a threaded rod and a rotating handle disposed outside the second flange; one end of the threaded rod is connected with the rotating handle, and the other end of the threaded rod is connected with the connecting rod.

In the fan lifting mechanism of the present invention, through holes are respectively formed at corresponding positions on the first flange and the second flange; the connecting rod passes through the through hole in the first flange; the threaded rod is connected with the connecting rod through the through hole in the second flange.

In the fan lifting mechanism of the present invention, the locking portion is provided with a plurality of locking grooves and a plurality of locking grooves are respectively formed on the locking portion.

In the fan lifting mechanism of the present invention, the inner wall of the pipe body is provided with a plurality of raised rails along the axial direction thereof; the slide block includes a connecting portion connected to the upright tube and a slide portion provided on the connecting portion; the sliding part is provided with a plurality of sliding chutes which are matched and sleeved with the convex rails respectively; the sliding groove can slide along the convex rail.

In the fan lifting mechanism of the present invention, the fan lifting mechanism further includes a limiting member; the limiting piece is arranged in an inner cavity at the top of the telescopic pipe; the inner wall of body bottom is provided with spacing boss.

In the fan lifting mechanism of the utility model, the mounting piece is arranged in the inner cavity at the top of the upright tube; the sliding block is mounted in the mounting member by a first screw.

In the fan lifting mechanism of the present invention, the pipe body includes a first pipe body and a second pipe body which are axially split and mutually fastened; the locking part comprises a first locking part arranged at the bottom end of the first pipe body and a second locking part arranged at the bottom end of the second pipe body; wherein,

a first upper limiting boss is arranged on the inner wall of the top of the first pipe body, and a second upper limiting boss opposite to the first upper limiting boss is arranged on the inner wall of the top of the second pipe body;

the inner wall of first body bottom is provided with first spacing boss down, the inner wall of second body bottom be provided with first spacing boss position relative second is spacing boss down.

In the fan lifting mechanism of the present invention, the fan lifting mechanism further comprises a stopper; the limiting block is arranged at the bottom of the pipe body; the pipe passes immediately the stopper with sliding block fixed connection.

Implement the utility model discloses a fan elevating system has following beneficial effect: the fan lifting mechanism adopts a sliding block structure to ensure that the telescopic pipe moves stably in the ascending or descending process; moreover, the structure of the locking mechanism is adopted, and the stability is good when the telescopic pipe is locked.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is an exploded view of a fan lifting mechanism according to a preferred embodiment of the present invention;

FIG. 2 is a partial perspective view of the telescoping tube of the fan lift mechanism of FIG. 1;

FIG. 3 is a perspective view of a slider block of the fan lift mechanism shown in FIG. 1;

fig. 4 is a partial perspective view of the upright tube in the fan elevating mechanism shown in fig. 1;

FIG. 5 is an exploded schematic view of a latch mechanism in the fan lift mechanism shown in FIG. 1;

FIG. 6 is a schematic view of the locking mechanism of FIG. 5 in a locked position;

FIG. 7 is a schematic structural diagram of the fan lifting mechanism shown in FIG. 1;

fig. 8 is a schematic cross-sectional view of the fan lifting mechanism taken along the line a-a in fig. 7 according to a preferred embodiment of the present invention;

fig. 9 is a schematic cross-sectional view of the fan lifting mechanism taken along the line B-B in fig. 8 according to a preferred embodiment of the present invention;

fig. 10 is an exploded view of a fan lifting mechanism according to a second preferred embodiment of the present invention;

fig. 11 is a perspective view of the first tube in fig. 10;

fig. 12 is a perspective view of the second tubular body of fig. 10;

FIG. 13 is a schematic structural diagram of the slider and the stopper shown in FIG. 10.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, a preferred embodiment of the present invention provides a fan lifting mechanism, which includes a vertical pipe 1, a telescopic pipe 2, a sliding block 3, and a locking mechanism 4. The extension tube 2 is disposed above the upright tube 1, and the diameter of the inner wall of the extension tube 2 is larger than the diameter of the outer wall of the upright tube 1. The sliding block 3 is fixedly connected to the top of the upright tube 1 and can slide in the telescopic tube 2. The telescopic tube 2 comprises a tube body 21 and a locking part 22 arranged at the bottom end of the tube body 21. The locking mechanism 4 is sleeved on the locking part 22, and can control the locking part 22 to press or loosen the upright tube 1, so that the extension tube 2 can realize the lifting function on the upright tube 1.

In this embodiment, the locking mechanism 4 includes a fastening member 41, a pulling member 42, a latch 43, a buckle 44, a connecting rod 45, and a locking member 46, as shown in fig. 5. The fastening member 41 is sleeved on the locking portion 22 and has good elastic performance, and the fastening member 41 includes a fastening ring 411, a first flange 412 and a second flange 413. The fastening ring 411 has a substantially circular ring structure, and a first flange 412 and a second flange 413 are respectively disposed at two ends of the fastening ring 411. When the first flange 412 and the second flange 413 are pressed to reduce the gap therebetween, the accommodating space of the inner cavity of the fastening ring 411 is correspondingly reduced, so that the locking portion 22 is pressed against the upright tube 1, and the telescopic tube 2 is locked and fixed on the upright tube 1.

The trigger 42 includes a trigger body 421, and a pressing portion 422 provided on the trigger body 421 in a protruding shape. One end of the latch 43 is caught on the actuating body 421 and the other end of the latch 43 is connected to the catching piece 44, and thus the latch 43 can be firmly mounted on the actuating body 421. One end of the connecting rod 45 is sleeved on the bolt 43 and can rotate around the bolt 43, and the other end of the connecting rod 45 passes through the first flange 412. One end of the stopper 46 passes through the second flange 413 to be connected to the link 45. In this embodiment, the first flange 412 and the second flange 413 are respectively provided with a through hole 414 at corresponding positions. The through hole 414 is a square hole, and the link 45 passes through the through hole 414 in the first flange 412. The threaded rod 461 is connected to the link 45 through a through hole 414 in the second flange 413. Accordingly, the connecting rod 45 is designed in the form of a square block, which fits into the through-hole 414. When the link 45 passes through the through hole 414 in the first flange 412, the link 45 is prevented from rotating in the through hole 414.

When the pulling body 421 is rotated, the pressing portion 422 may be in sliding contact with the outside of the first flange 412. When the pressing portion 422 is rotated to contact the outer side of the first flange 412, as shown in fig. 6, the gap between the first flange 412 and the second flange 413 is reduced, and the fastening ring 411 presses the locking portion 22 against the upright tube 1, so that the telescopic tube 2 is locked and fixed on the upright tube 1. When the pressing part 422 is rotated to be out of contact with the outer side of the first flange 412, the gap between the first flange 412 and the second flange 413 is increased, and the locking part 22 and the upright tube 1 are in a released state, so that the lifting height of the extension tube 2 on the upright tube 1 can be adjusted.

In this embodiment, in order to adjust the predetermined gap between the first flange 412 and the second flange 413, the locking member 46 is a handle screw member, which includes a threaded rod 461 and a rotating handle 462 disposed outside the second flange 413. One end of the threaded rod 461 is connected to the rotating handle 462, and the other end of the threaded rod 461 is connected to the connecting rod 45. The gap between the first flange 412 and the second flange 413 can be made large or small within a certain range by screwing or unscrewing the connection with the link 45 by rotating the handle 462. In this embodiment, the threaded rod 461 is integrally formed with the rotating handle 462.

In this embodiment, the locking portion 22 is provided with a plurality of locking grooves 23 and a plurality of protrusions 24 respectively provided on one side of the locking grooves 23. By providing the locking groove 23 and the projection 24, the locking portion 22 can be pressed or released against the upright tube 1 by the locking mechanism 4. In this embodiment, six locking grooves 23 and six protrusions 24 are provided on the locking portion 22. Six locking grooves 23, and six protrusions 24 are uniformly arranged on the locking portion 22, respectively. It will be appreciated that other options are possible for the number of locking grooves 23 and protrusions 24.

In this embodiment, referring to fig. 7 and 8, in order to make the sliding block 3 slide smoothly in the telescopic tube 2, a plurality of convex rails 20 are arranged on the inner wall of the tube body 21 along the axial direction. The slide block 3 includes a connecting portion 31 connected to the upright tube 1, and a slide portion 32 provided on the connecting portion 31. The sliding part 32 is provided with a plurality of sliding grooves 33 which are respectively matched and sleeved with the convex rail 20. The slide groove 33 is slidable along the male rail 20. By adopting the structure of the sliding groove 33 and the convex rail 20, the sliding block 3 can slide in the extension tube 2 smoothly. In this embodiment, the inner wall of the tube body 21 is provided with four rails 20 in the axial direction thereof, and the four rails 20 are uniformly arranged on the tube body 21. Correspondingly, the sliding part 32 is provided with four sliding grooves 33 which are matched and sleeved with the convex rail 20, and the four sliding grooves 33 are uniformly arranged on the sliding part 32. It will be appreciated that other options for the number of rails 20 and runners 33 are possible.

In this embodiment, in order to limit the moving stroke of the sliding block 3 in the pipe 21, the fan lifting mechanism further includes a limiting member 10, as shown in fig. 1. A stopper 10 is installed in the inner cavity of the top of the telescopic tube 2 to limit the upward movement stroke of the sliding block 3 in the tube body 21. The inner wall of the bottom of the tube 21 is provided with a limit boss 25, as shown in fig. 9, to limit the downward movement stroke of the sliding block 3 in the tube 21. Through the structure that sets up locating part 10 and spacing boss 25, can make sliding block 3 restrict the motion in body 1 between locating part 10 and spacing boss 25.

In this embodiment, the mounting member 11 is disposed in the top inner cavity of the upright tube 1, as shown in fig. 4. The sliding block 3 is mounted in the mounting member 11 by a first screw 100, as shown in fig. 9, so that the sliding block 3 is fixedly connected to the top of the upright tube 1. In order to connect the sliding block 3 to the top of the upright tube 1 more firmly, the connecting portion 31 is further provided with a plurality of convex strips 34 for increasing the friction force of the contact surface between the sliding block 3 and the upright tube 1, as shown in fig. 3. Through the structure that sets up convex strip 34, can make sliding block 3 connect more firmly in upright pipe 1 to improve fan elevating system's life. In this embodiment, twelve ribs 34 are uniformly arranged on the connecting portion 31. It is understood that other options for the number of ribs 34 are possible.

As shown in fig. 10, 11 and 12, a second embodiment of the fan lifting mechanism according to the present invention is different from the first embodiment in that the pipe body 21 includes a first pipe body 211 and a second pipe body 212 that are axially split and fastened to each other. The locking part 22 includes a first locking part 221 provided at the bottom end of the first tube 211, and a second locking part 222 provided at the bottom end of the second tube 212.

In this embodiment, in order to fasten the first tube 211 and the second tube 212 to each other, two sides of the first tube 211 are respectively provided with a plurality of fastening slots 213, and correspondingly, two sides of the second tube 212 are respectively provided with a plurality of fastening buckles 214 fastened to the fastening slots 213. The first tube 211 and the second tube 212 can be easily disassembled and assembled by the structure of the engaging groove 213 and the engaging buckle 214. It can be understood that a plurality of fasteners (not shown) may be disposed on two sides of the first tube 211, and a plurality of slots (not shown) engaged with the fasteners may be disposed on two sides of the second tube 212.

In this embodiment, in order to limit the stroke of the sliding block 3 moving in the tube 21, the inner wall of the top of the first tube 211 is provided with a first upper limiting boss 217, and the inner wall of the top of the second tube 212 is provided with a second upper limiting boss 218 opposite to the first upper limiting boss 217. The first upper limit projection 217 is engaged with the second upper limit projection 218 to limit the upward movement stroke of the slide block 3 in the tube 21. The inner wall of first body 211 bottom is provided with first spacing boss 219 down, and the inner wall of second body 212 bottom is provided with the second that is relative with first spacing boss 219 position down and is down spacing boss 220. The first lower limit projection 219 cooperates with the second lower limit projection 220 to limit the stroke of the downward movement of the slide block 3 in the tube 21.

In this embodiment, when the first tube 211 and the second tube 212 are engaged with each other, in order to fixedly connect the two, a first connector 215 is further disposed inside the first tube 211, and a second connector 216 is disposed inside the second tube 212 and is opposite to the first connector 215. The first connecting member 215 and the second connecting member 216 are connected by screw threads, so that the first tube 211 and the second tube 212 are fixedly connected.

In this embodiment, the fan lifting mechanism further includes a limiting block 5. The limiting block 5 is installed at the bottom of the tube 21 and used for limiting the sliding stroke of the sliding block 3 in the tube 21. The vertical pipe 1 passes through the limiting block 5 and is fixedly connected with the sliding block 3, please refer to fig. 13. The top side of the vertical pipe 1 is provided with a threaded connecting hole 12, and a threaded piece is adopted to penetrate through the threaded connecting hole 12 to be connected with the sliding block 3, so that the fixed connection between the vertical pipe 1 and the sliding block 3 can be realized. The sliding block 3 is provided with two sliding grooves 33, and correspondingly, the inner wall of the tube body 21 is provided with two convex rails 20 which are matched and sleeved with the sliding grooves 33.

In the specific use of the above fan lifting mechanism, when the installation height of the telescopic tube 2 needs to be adjusted, the trigger 42 is first rotated to disengage the pressing portion 422 from the first flange 412, and at this time, the locking portion 22 and the upright tube 1 are in an unlocked state, so that the installation height of the telescopic tube 2 on the upright tube 1 can be easily adjusted. When the telescopic tube 2 is adjusted to a proper installation height, the pressing portion 422 presses the first flange 412 by rotating the trigger 42 in the opposite direction, and at this time, the locking portion 22 presses the upright tube 1, so that the telescopic tube 2 is locked and fixed on the upright tube 1.

The fan lifting mechanism adopts a structure of a sliding block 3 to ensure that the extension tube 2 moves stably in the ascending or descending process. Secondly, fan elevating system adopts locking mechanism 4's structure, and the steadiness is good when locking flexible pipe 2. Furthermore, a limiting structure is arranged in the tube body 21 to limit the travel of the sliding block 3 moving in the tube body 21.

While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A fan lifting mechanism is characterized by comprising an upright tube (1), a telescopic tube (2) arranged above the upright tube (1), a sliding block (3) capable of sliding in the telescopic tube (2), and a locking mechanism (4); the telescopic pipe (2) comprises a pipe body (21) and a locking part (22) arranged at the bottom end of the pipe body (21); the sliding block (3) is fixedly connected to the top of the upright tube (1); the locking mechanism (4) comprises a fastening piece (41) sleeved on the locking part (22) and a trip piece (42) rotatably arranged on the fastening piece (41); when the wrench piece (42) is rotated, the wrench piece (42) is matched with the fastening piece (41) to enable the locking part (22) to press or release the upright tube (1).

2. The fan lifting mechanism according to claim 1, wherein the locking mechanism (4) further comprises a latch (43), a buckle (44), a connecting rod (45), and a detent (46); the fastening piece (41) comprises a fastening ring (411), and a first flange (412) and a second flange (413) which are arranged at two ends of the fastening ring (411); the trip piece (42) comprises a trip body (421) and a pressing part (422) which is arranged on the trip body (421) and is in a convex shape; wherein one end of the bolt (43) is clamped on the pulling body (421), and the other end of the bolt (43) is connected with the buckle sheet (44); one end of the connecting rod (45) is sleeved on the bolt (43) and can rotate around the bolt (43), and the other end of the connecting rod (45) penetrates through the first flange (412); one end of the blocking piece (46) passes through the second flange (413) to be connected with the connecting rod (45); when the pulling body (421) is rotated, the pressing portion (422) may be in sliding contact with an outer side of the first flange (412).

3. The fan lift mechanism as recited in claim 2, wherein the detent (46) comprises a threaded rod (461), and a rotating handle (462) disposed outside the second flange (413); one end of the threaded rod (461) is connected with the rotating handle (462), and the other end of the threaded rod (461) is connected with the connecting rod (45).

4. The fan lifting mechanism according to claim 3, wherein the first flange (412) and the second flange (413) are respectively provided with a through hole (414) at corresponding positions; the connecting rod (45) passes through the through hole (414) in the first flange (412); the threaded rod (461) is connected to the link (45) through the through hole (414) in the second flange (413).

5. The fan elevating mechanism according to claim 1, wherein the locking portion (22) is provided with a plurality of locking grooves (23) and a plurality of protrusions (24) respectively provided at one side of the locking grooves (23).

6. The fan lifting mechanism according to claim 1, wherein the inner wall of the pipe body (21) is provided with a plurality of raised rails (20) along the axial direction thereof; the slide block (3) comprises a connecting part (31) connected with the upright tube (1) and a slide part (32) arranged on the connecting part (31); the sliding part (32) is provided with a plurality of sliding grooves (33) which are matched and sleeved with the convex rail (20) respectively; the sliding groove (33) can slide along the convex rail (20).

7. The fan lifting mechanism according to any of claims 1-6, further comprising a stopper (10); the limiting piece (10) is arranged in an inner cavity at the top of the extension tube (2); the inner wall of body (21) bottom is provided with spacing boss (25).

8. The fan lift mechanism according to claim 7, characterized in that a mounting member (11) is provided in the top inner cavity of the upright tube (1); the sliding block (3) is mounted in the mounting member (11) by a first screw (100).

9. The fan lifting mechanism according to any one of claims 1 to 6, wherein the pipe body (21) comprises a first pipe body (211) and a second pipe body (212) which are axially split and are snap-fitted to each other; the locking part (22) comprises a first locking part (221) arranged at the bottom end of the first pipe body (211) and a second locking part (222) arranged at the bottom end of the second pipe body (212); wherein,

a first upper limiting boss (217) is arranged on the inner wall of the top of the first pipe body (211), and a second upper limiting boss (218) opposite to the first upper limiting boss (217) is arranged on the inner wall of the top of the second pipe body (212);

the inner wall of first body (211) bottom is provided with first spacing boss (219) down, the inner wall of second body (212) bottom be provided with first spacing boss (219) position relative second lower limit boss (220).

10. The fan lift mechanism according to claim 9, further comprising a stopper (5); the limiting block (5) is arranged at the bottom of the pipe body (21); the vertical pipe (1) penetrates through the limiting block (5) and is fixedly connected with the sliding block (3).