CN111022358A

CN111022358A - Telescopic fan

Info

Publication number: CN111022358A
Application number: CN202010024554.0A
Authority: CN
Inventors: 朱彩霞
Original assignee: Shenzhen Weiteshijia Technology Co ltd
Current assignee: Shenzhen Weiteshijia Technology Co ltd
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-04-17

Abstract

The utility model provides a flexible fan, includes fan bracket and suit at fan bracket circumference periphery and with fan bracket sliding connection's shell, folding fan blade group is installed to fan bracket one end, support internally mounted has fan motor and circuit board assembly, fan motor and circuit board assembly electric connection, folding fan blade group is connected with the fan motor drive, when the relative shell of fan bracket slides to keeping away from folding fan blade group one end, folding fan blade group be accomodate in inside the housing cavity. According to the invention, the fan bracket is provided with the corresponding stroke positioning structure in the telescopic stroke, so that the fan is prevented from moving away in the use or storage state, the normal use of the fan is ensured, and meanwhile, the fan can automatically trigger the circuit trigger switch in the telescopic operation process, so that the opening and closing state of the fan is automatically controlled, and the fan function is convenient for people to control and use.

Description

Telescopic fan

Technical Field

The invention relates to the technical field of fans, in particular to a telescopic fan.

Background

Fan refers to a tool for cooling by generating wind in hot days. An electric fan is a device which is driven by electricity to generate air flow, and a fan arranged in the electric fan is electrified and then rotated into natural wind to achieve the effect of cooling.

Traditional fan is either to place in the mesa and use, or hold and use on hand, and its volume is all relatively great, and is inconvenient to going out to carry, consequently, if there is a section small in size, be convenient for accomodate and deposit, and stable performance's fan can make things convenient for people to hand-carry the use when going out undoubtedly.

Disclosure of Invention

The invention aims to provide a telescopic fan which can be stored and hidden in a shell when not in use, is small in size and convenient to carry, is provided with a corresponding performance protection structure in the use process, meets the requirement of convenient use, and can ensure stable product performance and durability so as to solve the problems in the prior art.

In order to solve the technical problems, the technical scheme of the invention is as follows: a telescopic fan comprises a fan support and a shell which is sleeved on the periphery of the fan support and is in sliding connection with the fan support, wherein one end of the fan support is provided with a folding fan blade group, a fan motor and a circuit board assembly are arranged in the support and are electrically connected, the folding fan blade group is in driving connection with the fan motor, when the fan support slides towards one end far away from the folding fan blade group relative to the shell, the folding fan blade group is accommodated in a cavity of the shell, a stroke positioning structure, a time-delay limiting mechanism and a circuit trigger switch are arranged between the fan support and the inner wall of the shell, when the circuit trigger switch is pressed, the fan motor continuously works, when the circuit trigger switch is released from pressing, the fan motor stops working, when the circuit trigger switch is released from pressing, the time-delay limiting mechanism immediately starts limiting, and automatically reset after a specified time period.

Preferably, the stroke positioning structure comprises a first elastic buckling claw and a second elastic buckling claw which are arranged on the fan support and located on the same straight line, and a positioning convex key arranged on the inner wall of the shell, wherein when the shell slides relative to the fan support, the moving stroke of the positioning convex key is located between the first elastic buckling claw and the second elastic buckling claw and is connected with the first elastic buckling claw and the second elastic buckling claw in a buckling manner.

Preferably, circuit trigger switch and circuit board components electric connection, circuit trigger switch sets up in the predetermined switch through-hole of fan bracket to stretch out towards the shell inner wall from the switch through-hole, be provided with sliding guide on the fan bracket casing, circuit trigger switch magnetism is located the sliding guide stroke, be provided with the guide convex key on the shell inner wall, when the relative fan bracket of shell slides, the guide convex key is in slide on the sliding guide, and reach circuit trigger switch position department and be connected with circuit trigger switch push type.

Preferably, the delay limiting mechanism comprises a limiting motor and a lock bolt, a driving gear is sleeved on an output shaft of the limiting motor, row teeth meshed with the driving gear are arranged on the side face of the lock bolt, and the lock bolt penetrates through the shell of the fan support.

Preferably, a push key mounting groove is formed in the side face of the fan support, a push key is fixedly connected to the push key mounting groove, a push key sliding groove is formed in the shell, and the push key penetrates through the push key sliding groove.

Preferably, a storage battery is installed inside the fan support, and the storage battery is electrically connected with the circuit board assembly.

Preferably, the circuit board assembly is electrically connected with a USB interface.

Preferably, a decorative piece is embedded on one end part of the fan bracket far away from the folding fan blade group.

Preferably, the specified time period is 3-5 seconds.

Compared with the prior art, the invention has the following beneficial effects:

in the invention, the fan bracket is provided with a corresponding stroke positioning structure in the telescopic stroke to ensure that the fan cannot be out of position in the use or storage state and ensure the normal use of the fan, meanwhile, the fan can automatically trigger the circuit trigger switch in the telescopic operation process to automatically control the opening and closing state of the fan, thereby facilitating the operation and control of the fan by people, and in addition, the corresponding delay limiting structure is arranged in the storage triggering process to effectively prevent the folding fan blade group from colliding with the shell under the inertia effect, thereby playing the role of protecting the folding fan blade group and the shell and effectively prolonging the service life of the product.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is an exploded view of the structure of the present invention;

FIG. 3 is a reference view of the storage state of the present invention;

FIG. 4 is a first drawing of the present invention in an extended state;

FIG. 5 is a view of the second embodiment of the present invention in an extended state;

FIG. 6 is a schematic view of the housing structure of the present invention;

FIG. 7 is a schematic view of a folding fan blade assembly according to the present invention;

fig. 8 is a block diagram illustrating the control principle of the circuit according to the present invention.

In the figure: 1, a shell; 11 push key chutes; 12 positioning convex keys; 13 a guide convex key; 2, a fan bracket; 21 a cradle front shell; 22 a cradle back shell; 223 a decorative member; 23 a sliding guide rail; 24 a first resilient catch; 25 second elastic buckling claws; 27 switching the through hole; 28 pushing a key; 281 push key installation grooves; 3 folding the fan blade group; 4, a storage battery; 5 a fan motor; 6 a circuit board assembly; 61USB interface; 9, a limiting motor; 91 a latch.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 6, a retractable fan includes a fan bracket 2 and a housing 1 sleeved on the periphery of the fan bracket 2 and slidably connected to the fan bracket 2, a foldable fan blade set 3 is installed at one end of the fan bracket 2, a fan motor 5 and a circuit board assembly 6 are installed inside the bracket, the fan motor 5 and the circuit board assembly 6 are electrically connected, the foldable fan blade set 3 is drivingly connected to the fan motor 5, and when the fan bracket 2 slides towards one end far away from the foldable fan blade set 3 relative to the housing 1, the foldable fan blade set 3 is accommodated inside a cavity of the housing 1. Be provided with stroke location structure, delay stop gear and circuit trigger switch 62 between fan bracket 2 and the shell 1 inner wall, stroke location structure detains claw 24 and second elasticity including setting up on fan bracket 2 and being located same straight line and detains claw 25 to and set up location convex key 12 on the shell 1 inner wall, when shell 1 slides relative fan bracket 2, the removal stroke of location convex key 12 is located first elasticity and detains between claw 24 and the second elasticity detain claw 25, and detains claw buckle 25 with first elasticity and second elasticity and be connected. A push key installation groove 281 is formed in the side surface of the fan bracket 2, a push key 28 is fixedly connected to the push key installation groove 281, a push key sliding groove 281 is formed in the housing 1, and the push key 28 penetrates through the push key sliding groove 281.

The fan bracket 2 is characterized in that a sliding guide rail 23 is arranged on a shell body of the fan bracket 2, the circuit trigger switch 62 is positioned in the stroke of the sliding guide rail 23, a guide convex key 13 is arranged on the inner wall of the shell 1, when the shell 1 slides relative to the fan bracket 2, the guide convex key 13 slides on a straight line where the sliding guide rail 23 and the circuit trigger switch 62 are positioned, and reaches the position of the circuit trigger switch 62 to be connected with the circuit trigger switch 62 in a pressing mode.

Circuit trigger switch 62 and circuit board assembly 6 electric connection, circuit trigger switch 62 sets up in the switch through-hole 27 that fan support 2 predetermines to stretch out towards shell 1 inner wall from switch through-hole 27, when circuit trigger switch 62 is pressed, fan motor 5 continuously works, when circuit trigger switch 62 removes to press, fan motor 5 stop work works, works as when circuit trigger switch 62 is removed to press, delay limit mechanism starts spacingly immediately to automatic re-setting after the appointed time cycle of delay, the appointed time cycle is 3~5 seconds.

The time delay limiting mechanism comprises a limiting motor 9 and a lock bolt 91, a driving gear is sleeved on an output shaft of the limiting motor 9, row teeth connected with the driving gear in a meshed mode are arranged on the side face of the lock bolt 91, and the lock bolt 91 penetrates through the shell of the fan support 2.

When the external force exerted on the push key 28 does not reach the designated strength, the first elastic buckling claw 24 or the second elastic buckling claw 25 is stably buckled with the positioning convex key 12 arranged on the inner wall of the shell 1; when the external force applied to the push key 28 is sufficient to overcome the engaging state of the first elastic latch 24 or the second elastic latch 25 with the positioning protrusion 12, the push key 28 can slide on the push key sliding slot 281, i.e. the housing 1 slides relative to the fan bracket 2, so as to adjust the state of the fan to be in the retracted or extended state.

The fan support 2 internally mounted has battery 4, battery 4 and circuit board assembly 6 electric connection, electric connection is provided with USB interface 61 on the circuit board assembly 6. The USB interface 61 runs through the casing of the fan bracket 2, and when the folding fan is accommodated in the cavity of the housing 1, the USB interface 61 is located at the position of the push key chute 11, so that the USB interface 61 can be conveniently connected with an external power supply to charge the storage battery 4.

One end part of the fan bracket 2 far away from the folding fan blade group 3 is embedded with a decorative part 223, so that the effect of beautiful decoration is achieved.

The working principle is as follows: when the housing 1 slides to a limit position relative to the fan bracket 2 to a position far away from the end of the folding fan blade set 3, so that the folding fan blade set 3 is completely exposed outside the housing 1, the guide convex key 13 is just pressed on the circuit trigger switch 62, and meanwhile, the positioning convex key 12 and the second elastic buckling claw 25 are in a buckling state, so that the fan bracket 2 and the housing 1 are kept in an extension state, because the circuit trigger switch 62 is in a pressed state at the time, the circuit of the fan motor 5 is switched on, the folding fan blade set 3 starts to rotate under the driving of the fan motor 5, and the folding fan blade set 3 which is originally in a folding state is unfolded to start to fan under the action of rotating centrifugal force; when the fan bracket 2 needs to be stored, the push button 28 is pushed downwards by a hand to enable the fan bracket 2 to generate storage displacement towards the inside of the shell 1, because of an external force action enough to overcome the buckling effect of the positioning convex key 12 and the second elastic buckling claw 25, the buckling effect between the positioning convex key 12 and the second elastic buckling claw 25 is relieved at the moment, the positioning convex key 12 is separated from the second elastic buckling claw 25, meanwhile, the guiding convex key 13 is withdrawn from the position of the circuit trigger switch 62, the pressing state of the circuit trigger switch 62 is relieved, the circuit of the fan motor 5 is cut off immediately, the fan motor 5 stops working, at the moment, the circuit board component 6 immediately starts the limit motor 9 to drive the lock bolt 91 to extend out of the shell of the fan bracket 2, because the lock bolt 91 is arranged on the moving stroke of the positioning convex key 12, the positioning convex key 12 just withdrawn from the second elastic buckling claw 25 is immediately stopped by the lock bolt 91 to continue sliding, after the limiting motor 9 starts the lock plunger 91 to delay and block the positioning convex key 12 for about 3-5 seconds (the delay time is adapted after an experiment is carried out before production according to the rotation parameters of a specific fan motor and a folding fan blade set), when the folding fan blade set 3 completely releases the rotation inertia to stop rotating and is in a folding state, the limiting motor 9 drives the lock plunger 91 to retreat and recover to carry out the shell of the fan bracket 2, at the moment, the push key 28 is pushed to enable the fan bracket 2 to be continuously accommodated in the cavity of the shell 1 until the positioning convex key 12 reaches the position of the first elastic buckling claw 24 and is connected with the first elastic buckling claw 24 in a buckling mode, so that the fan bracket 2 and the folding fan blade set 3 are completely accommodated in the cavity of the shell 1, stable accommodation is realized under the buckling action of the positioning convex key 12 and the first elastic buckling claw 24, and the fan blade set does not slide outwards. When fan motor 5 stop work, folding fan blade group 3 still is in the inertial rotation state, if direct sliding downwards accomodates fan support 2 this moment, the flabellum of folding fan blade group 2 can beat on shell 1 edge, causes shell 1 and folding fan blade group 3 to appear the damage easily, consequently, set up delay stop gear and just in time solved this defect, can ensure to accomodate after folding fan blade group 3 releases rotatory inertia completely, the effectual life who prolongs the product.

In summary, the following steps: in the invention, the fan bracket 2 is provided with a corresponding stroke positioning structure in the telescopic stroke to ensure that the fan cannot be out of position in the use or storage state and ensure the normal use of the fan, meanwhile, the fan can automatically trigger the circuit trigger switch 62 in the telescopic operation process to automatically control the opening and closing state of the fan, thereby facilitating the operation and control of the fan, in addition, the corresponding delay limiting structure is arranged in the storage triggering process, the folding fan blade group 3 can be effectively prevented from colliding with the shell 1 under the inertia effect, thereby playing the role of protecting the folding fan blade group 3 and the shell, and effectively prolonging the service life of the product.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A telescopic fan is characterized in that: the fan blade assembly comprises a fan support (2) and a shell (1) which is sleeved on the periphery of the fan support (2) in the circumferential direction and is in sliding connection with the fan support (2), a folding fan blade assembly (3) is installed at one end of the fan support (2), a fan motor (5) and a circuit board assembly (6) are installed inside the support, the fan motor (5) and the circuit board assembly (6) are electrically connected, the folding fan blade assembly (3) is in driving connection with the fan motor (5), when the fan support (2) slides towards one end far away from the folding fan blade assembly (3) relative to the shell (1), the folding fan blade assembly (3) is stored inside a cavity of the shell (1), a stroke positioning structure, a delay limiting mechanism and a circuit trigger switch (62) are arranged between the fan support (2) and the inner wall of the shell, when the circuit trigger switch (62) is pressed, the fan motor (5) continuously works, when the circuit trigger switch (62) is released from pressing, the fan motor (5) stops working, and when the circuit trigger switch (62) is released from pressing, the delay limiting mechanism starts limiting instantly and automatically resets after a specified time period is delayed.

2. The telescopic fan as claimed in claim 1, wherein: the stroke positioning structure comprises a first elastic buckling claw (24) and a second elastic buckling claw (25) which are arranged on the fan support (2) and located on the same straight line, and a positioning convex key (12) arranged on the inner wall of the shell (1), wherein when the shell (1) slides relative to the fan support (2), the moving stroke of the positioning convex key (12) is located between the first elastic buckling claw (24) and the second elastic buckling claw (25) and is connected with the first elastic buckling claw (24) and the second elastic buckling claw (25) in a buckling mode.

3. The telescopic fan as claimed in claim 1, wherein: circuit trigger switch (62) and circuit board subassembly (6) electric connection, circuit trigger switch (62) set up in the predetermined switch through-hole (27) of fan bracket (2) to stretch out towards shell (1) inner wall from switch through-hole (27), be provided with sliding guide (23) on fan bracket (2) casing, circuit trigger is opened magnetism (62) and is located sliding guide (23) stroke, be provided with guide convex key (13) on shell (1) inner wall, when shell (1) slides relative fan bracket (2), guide convex key (13) are in slide on sliding guide (23), and reach circuit trigger switch (62) position department and be connected the push type with circuit trigger switch (62).

4. The telescopic fan as claimed in claim 1, wherein: the time delay limiting mechanism comprises a limiting motor (9) and a lock bolt (91), a driving gear is sleeved on an output shaft of the limiting motor (9), row teeth connected with the driving gear in a meshed mode are arranged on the side face of the lock bolt (9), and the lock bolt (91) penetrates through a shell of the fan support (2).

5. The telescopic fan as claimed in claim 1, wherein: set up on fan bracket (2) side and push away key mounting groove (281), fixedly connected with pushes away key (28) on pushing away key mounting groove (281), shell (1) has been seted up and has been pushed away key spout (11), it sets up to run through pushing away key spout (281) to push away key (28).

6. The telescopic fan as claimed in claim 1, wherein: fan bracket (2) internally mounted has battery (4), battery (4) and circuit board subassembly (6) electric connection.

7. The telescopic fan as claimed in claim 1 or 6, wherein: and the circuit board assembly (6) is electrically connected with a USB interface (61).

8. The telescopic fan as claimed in claim 1, wherein: one end part of the fan bracket (2) far away from the folding fan blade group (3) is embedded with a decorative part (223).

9. The telescopic fan as claimed in claim 1, wherein: the specified time period is 3-5 seconds.