A small fan

Abstract

The present application relates to the technical field of fans, and in particular to a small fan. A small fan is provided, comprising a wristband for wearing on a human wrist; a fan body, with the axis of the fan body in the height direction as the center line, the fan body being rotatably arranged on the wristband, and an air outlet being arranged on the side of the fan body; an adjustment structure for rotatably connecting the fan body with the wristband; an anti-slip structure for anti-slip cooperation between the fan body and the wristband; wherein the adjustment structure comprises a first adjustment member and a second adjustment member, the first adjustment member being arranged on the fan body, the second adjustment member being arranged on the wristband, and the first adjustment member and the second adjustment member being movably sleeved. The small fan is simple in structure and has a low failure rate.

Description

Technical Field

[0001] The present application relates to the technical field of fans, and in particular to a small fan. Background Art

[0002] At present, a small fan has appeared in maternal and infant products. The fan has a wristband and can be worn on the wrist to meet the portability. The fan in the relevant technology includes a main fan, a rotating column, a gear, a connecting wheel, an adjustment disk and other structures. The gear and the connecting wheel are meshed. The adjusting disk is rotated to drive the connecting wheel to rotate, and the connecting wheel drives the gear to rotate. The gear drives the main fan to rotate to adjust the angle of the main fan. This structure makes the angle of the main fan adjustable. Although it solves its limitations, the overall structure is complex, the manufacturing cost is high, the working time is long, and the failure rate is high. Utility Model Content

[0003] Based on this, it is necessary to provide a small fan with simple structure and low failure rate.

[0004] A small fan, comprising:

[0005] include:

[0006] Wristband, used to be worn on human wrist;

[0007] A fan body, the fan body is rotatably disposed on the wristband and is provided with an air outlet in a first direction;

[0008] The adjustment structure includes a first adjustment member and a second adjustment member, wherein the first adjustment member is arranged on the fan body, and the second adjustment member is arranged on the wristband; with the axis of the height direction of the fan body as the center line, the first adjustment member can be rotatably sleeved on the second adjustment member around the center line, and drive the fan body to rotate relative to the wristband;

[0009] Wherein, the first direction and the height direction are arranged at an angle.

[0010] In one embodiment, the small fan further includes a limiting structure, and the limiting structure is used to locate the position of the fan body relative to the wristband during the circumferential rotation process.

[0011] In one embodiment, the limiting structure includes a first limiting member and a second limiting member, wherein the first limiting member is disposed on the first adjusting member, and the second limiting member is disposed on the second adjusting member and can be in limiting contact with the first limiting member.

[0012] In one embodiment, the first limiting member includes a spring sheet and a protrusion, the spring sheet is connected to the first adjusting member and can swing relative to the first adjusting member; the protrusion is arranged on the spring sheet; the second limiting member is a ratchet arranged on the second adjusting member, and the ratchet and the protrusion can cooperate in a limiting manner.

[0013] In one embodiment, along the height direction of the shell, one end of the shell facing the wristband is recessed into the shell to form the first adjusting member, and the elastic sheet is arranged on the side wall of the first adjusting member and is set as an integrated structure with the first adjusting member.

[0014] In one embodiment, the ratchet is provided in plurality, and the plurality of ratchet are arranged at intervals along the outer peripheral wall of the second adjusting member.

[0015] In one embodiment, the wristband includes a base and a strap body, the second adjustment member is arranged on a side of the base close to the shell, and an insertion interface is provided on a side of the base away from the shell, and the strap body is detachably inserted into the insertion interface.

[0016] In one embodiment, the small fan further includes a first through hole, a second through hole and a connecting piece, wherein the first through hole is provided on the fan body, the second through hole is provided on the wrist strap, the connecting piece is passed through the first through hole and the second through hole, one end of the connecting piece cooperates with the fan body to prevent it from falling off, and the other end cooperates with the wrist strap to prevent it from falling off.

[0017] In one embodiment, the fan body includes a shell, a fan, a driving member, a control panel, and a rechargeable battery; the fan is disposed in the shell and connected to the driving member; the control panel and the rechargeable battery are disposed in the shell, and the charging port is disposed on the shell and electrically connected to the rechargeable battery.

[0018] In one of the embodiments, the fan body further includes a speed regulating switch, which is disposed on the housing and connected to the control panel.

[0019] Compared with the prior art, the small fan realizes the adjustable angle of the fan body by setting the first adjusting member and the second adjusting member in a sleeve-type manner, which not only meets the requirements of multiple-angle air discharge, but also simplifies the overall structure and makes the product structure simple. In addition, the sleeve-type arrangement is not prone to failure, which effectively reduces the failure rate of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 Schematic diagram of the small fan structure provided for this application.

[0022] Figure 2 A three-dimensional cross-sectional view of the small fan provided in the present application with the belt body removed.

[0023] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0024] Figure 4 A schematic structural diagram of the base of the small fan provided in this application.

[0025] Figure 5 Bottom view of the small fan provided for this application with the wrist strap removed.

[0026] Figure 6 Rear view of a small fan provided for this application.

[0027] Figure numerals: 10, wristband; 11, seat; 111, plug interface; 12, belt body; 20, fan body; 21, shell; 22, air inlet; 23, air outlet; 24, fan; 25, driving member; 26, control panel; 27, charging port; 28, rechargeable battery; 29, speed control switch; 30, adjustment structure; 31, first adjustment member; 32, second adjustment member; 40, limiting structure; 41, first limiting member; 411, spring piece; 412, protrusion; 42, second limiting member; 51, first through hole; 52, second through hole; 53, connecting member. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0029] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0033] See also Figures 1 to 6 The present application provides a small fan, including a wristband 10, a fan body 20, and an adjustment structure 30. The wristband 10 is used to be worn on a human wrist. The fan body 20 is rotatably arranged on the wristband 10. The fan body 20 is provided with an air outlet 23 in a first direction Y. Specifically, the adjustment structure 30 includes a first adjustment member 31 and a second adjustment member 32. The first adjustment member 31 is arranged on the fan body 20, and the second adjustment member 32 is arranged on the wristband 10. With the axis of the height direction Z of the fan body 20 as the center line, the first adjustment member 31 can be circumferentially rotatably sleeved on the second adjustment member 32 around the center line, and drive the fan body 20 to rotate relative to the wristband 10.

[0034] In this embodiment, the first direction Y and the height direction Z are set at an angle, and the angle setting here means that the first direction is not parallel to the height direction, and the angle between the two can be set to any angle except 0° and 360°. In this application, the first direction Y is set as the length direction of the fan body, and the angle between the first direction Y and the height direction Z is 90°.

[0035] Here, the fan body 20 is circumferentially rotated relative to the wristband 10 by the movable sleeve connection of the first adjusting member and the second adjusting member, which not only satisfies the multi-angle air outlet adjustment of the fan body 20, but also simplifies the overall structure, and the product is easy to process, has high processing efficiency, and a high pass rate. In addition, compared with complex methods such as gear meshing, the sleeve connection method will not cause failures due to various problems such as inaccurate meshing, gear wear, and impurity jamming, which effectively reduces the failure rate of the product and extends the service life of the product.

[0036] Furthermore, the first adjusting member 31 is arranged at the bottom of the fan body 20. The first adjusting member 31 may be a columnar recessed portion that is recessed inwardly compared to the shell 21, or a convex portion that is protruded outwardly compared to the shell 21. And it may be a structure that is separate from the shell 21, or a structure that is integrated with the shell 21. In this embodiment, the first adjusting member 31 and the shell 21 are an integrated structure, and along the height direction Z of the shell 21, the lower part of the shell 21 is recessed from the outside of the shell 21 to the inside of the shell 21 to form the above-mentioned first adjusting member 31, and the overall structure is simple and easy to process.

[0037] Furthermore, the second adjusting member 32 may be a concave portion that is recessed inwardly compared to the wristband 10, or a convex portion that is protruded outwardly compared to the wristband 10. It may be a structure that is separate from the wristband 10, or a structure that is integrated with the wristband 10. In this embodiment, the second adjusting member 32 and the wristband 10 are an integrated structure, specifically, it is disposed on the side of the wristband 10 close to the housing 21, and protrudes upward.

[0038] In one embodiment, the small fan further includes a limiting structure 40, which is used to position the fan body 20 relative to the wristband 10 during the circumferential rotation process, thereby ensuring that the fan body 20 does not change its angle automatically during use, thereby improving the use efficiency and comfort.

[0039] See also Figures 3 to 5The limiting structure 40 includes a first limiting member 41 and a second limiting member 42. The first limiting member 41 is arranged on the first adjusting member 31, and the second limiting member 42 is arranged on the second adjusting member 32. During the relative rotation of the first adjusting member 31 and the second adjusting member 32, the second limiting member 42 can abut against the first limiting member 41. When the angle needs to be adjusted, manually twisting the fan body 20 can overcome the abutment of the first limiting member 41 and the second limiting member 42, so that the fan body 20 rotates relative to the wristband 10, thereby adjusting the angle. In normal use, the abutment of the first limiting member 41 and the second limiting member 42 can effectively prevent the fan body 20 from rotating relative to the wristband 10. The position locking of the fan body 20 is achieved by adopting a simple structure, and the comfort of product use is not reduced while simplifying the structure.

[0040] In this embodiment, the first stopper 41 includes a spring sheet 411 and a protrusion 412 provided on the spring sheet 411. The spring sheet 411 is provided on the side wall of the first adjusting member 31, one end of the spring sheet 411 is fixedly connected to the first adjusting member 31, and the other end can be flipped up and down relative to the first adjusting member 31, that is, it is swingably connected to the first adjusting member 31. Preferably, the spring sheet 411 and the first adjusting member 31 are an integral structure.

[0041] In this embodiment, the second limiting member 42 is a ratchet provided on the second adjusting member 32. The ratchet is provided in plurality, and the plurality of ratchet are arranged at intervals along the outer peripheral wall of the protrusion 412. Of course, in other embodiments, the second limiting member 42 may also be provided as a spring sheet 411 structure having a protrusion 412, and the first limiting member 41 may be provided as a ratchet.

[0042] In one embodiment, the wristband 10 includes a seat 11 and a belt body 12, and the second adjusting member 32 is arranged on a side of the seat 11 close to the shell 21. Further, the belt body 12 is a flexible structure and is removably connected to the seat 11. The flexible structure mentioned above refers to a structure made of rubber, resin, and other materials or processed by nylon weaving and other methods. In this embodiment, the belt body 12 is made of rubber, has a good deformation effect, can better fit the wrist, and improve the comfort of use. The detachable connection between the belt body 12 and the seat 11 can be achieved by plugging, screwing, etc. In this embodiment, the two are plugged together to facilitate disassembly and installation. Specifically, a plug interface 111 is provided on the side of the seat 11 away from the shell 21, and the plug interface 111 penetrates the seat 11 along the length direction of the seat 11. The belt body is inserted into the plug interface 111 to complete the connection with the seat 11.

[0043] Specifically, the small fan further includes a first through hole 51, a second through hole 52 and a connecting piece 53, wherein the first through hole 51 is provided on the fan body 20, and the second through hole 52 is provided on the wristband 10. Specifically, the first through hole 51 is provided at the center of the first adjusting member 31, and the second through hole 52 is provided on the seat 11, and the connecting piece 53 is passed through the first through hole 51 and the second through hole 52, and one end of the connecting piece 53 is anti-detachably matched with the fan body 20, and the other end is anti-detachably matched with the wristband 10. The connecting piece 53 can be a bolt, a latch, a rivet, etc., and a bolt is used in the present application. One end is anti-detachably matched with the fan body 20 through the bolt head, and the other end is anti-detachably matched with the wristband 10 through a nut.

[0044] Furthermore, the fan body 20 includes a housing 21, an air inlet 22 and an air outlet 23, a fan 24, a driving member 25, a control panel 26, a charging port 27 and a rechargeable battery 28. Among them, the charging port 27, the air inlet 22 and the air outlet 23 are arranged on the housing 21, and the fan 24, the driving member 25, the control panel 26 and the rechargeable battery 28 are all arranged in the housing 21. The output shaft of the driving member 25 is connected to the fan 24. The driving member 25 can be a micro motor, a small brush motor, etc., which are existing technologies and can be directly purchased, and the structure is not described in detail. The charging port 27 is electrically connected to the rechargeable battery 28. In this embodiment, the battery is set to be a rechargeable battery, and the battery is charged through the charging port 27 to extend the service life of the fan 24. The battery can be a nickel-cadmium battery, a lithium battery, etc. The rechargeable battery 28 and the driving member 25 are electrically connected to the control panel 26. The control panel 26 can be a circuit board or a PLC control board, which can be directly purchased on the market, so it is not described in detail.

[0045] See also Figure 6 The fan body 20 also includes a speed control switch 29, which is arranged on the housing 21 and connected to the control panel 26. The speed control switch 29 includes a button and a contact arranged on the control panel 26. By pressing the button, pressure can be applied to the contact, so that the control panel 26 issues relevant instructions to control the speed at which the driving member 25 drives the fan 24 to rotate. Specifically, when the button is pressed once, the fan 24 starts and rotates at the lowest speed. When pressed twice, the fan 24 rotates at a medium speed. When pressed three times, the fan 24 rotates at the highest speed. When the button is pressed four times, the fan 24 stops rotating. The method of receiving and sending instructions based on the circuit board or the PLC control board is a prior art, so it is not repeated here.

[0046] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A small fan, characterized in that: include: A wristband (10) for being worn on a human wrist; A fan body (20), the fan body (20) being rotatably disposed on the wristband (10) and having an air outlet (23) in a first direction; The adjustment structure (30) comprises a first adjustment member (31) and a second adjustment member (32), wherein the first adjustment member (31) is arranged on the fan body (20), and the second adjustment member (32) is arranged on the wristband (10); with the axis of the fan body (20) in the height direction as the center line, the first adjustment member (31) can be rotatably sleeved on the second adjustment member (32) around the center line, and drive the fan body (20) to rotate relative to the wristband (10); Wherein, the first direction and the height direction are arranged at an angle.

2. The small fan according to claim 1, characterized in that: The small fan further comprises a limiting structure (40), wherein the limiting structure (40) is used for positioning the fan body (20) relative to the wristband (10) during the circumferential rotation process.

3. The small fan according to claim 2, characterized in that: The limiting structure (40) comprises a first limiting member (41) and a second limiting member (42); the first limiting member (41) is arranged on the first adjusting member (31); the second limiting member (42) is arranged on the second adjusting member (32) and can be in limiting contact with the first limiting member (41).

4. The small fan according to claim 3, characterized in that: The first limiting member (41) comprises a spring sheet (411) and a protrusion (412); the spring sheet (411) is connected to the first adjusting member (31) and can swing relative to the first adjusting member (31); the protrusion (412) is arranged on the spring sheet (411); the second limiting member (42) is a ratchet arranged on the second adjusting member (32), and the ratchet and the protrusion (412) can be limitedly matched.

5. The small fan according to claim 4, characterized in that: The fan body (20) includes a shell (21), and along the height direction of the shell (21), one end of the shell (21) facing the wristband (10) is recessed into the shell (21) to form the first adjusting member (31), and the spring sheet (411) is arranged on the side wall of the first adjusting member (31) and is set as an integrated structure with the first adjusting member (31).

6. The small fan according to claim 4, characterized in that: The ratchet teeth are arranged in plurality, and the plurality of ratchet teeth are arranged at intervals along the outer peripheral wall of the second adjusting member (32).

7. The small fan according to claim 1, characterized in that: The wristband (10) comprises a base (11) and a belt body (12); the second adjusting member (32) is arranged on a side of the base (11) close to the fan body (20); a plug-in interface (111) is provided on a side of the base (11) away from the fan body (20); and the belt body (12) is detachably inserted into the plug-in interface (111).

8. The small fan according to claim 1, characterized in that: The small fan further comprises a first through hole (51), a second through hole (52) and a connecting piece (53); the first through hole (51) is arranged on the fan body (20); the second through hole (52) is arranged on the wristband (10); the connecting piece (53) is passed through the first through hole (51) and the second through hole (52); one end of the connecting piece (53) is anti-detachably matched with the fan body (20); and the other end is anti-detachably matched with the wristband (10).

9. The small fan according to claim 1, characterized in that: The fan body (20) comprises a housing (21), a fan (24), a driving member (25), a control panel (26), and a rechargeable battery (28); the fan (24) is arranged in the housing (21) and connected to the driving member (25); the control panel (26) and the rechargeable battery (28) are arranged in the housing; and the charging port (27) is arranged on the housing (21) and is electrically connected to the rechargeable battery (28).

10. The small fan according to claim 9, characterized in that: The fan body (20) further comprises a speed regulating switch (29), wherein the speed regulating switch (29) is arranged on the housing (21) and is connected to the control panel (26).

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