Limiting mechanism applied to fan swinging head

Abstract

The utility model relates to a limiting mechanism applied to a fan swing head, which comprises a fixed part provided with a through hole penetrating along the axial direction of the fixed part; the movable part is used for being connected with a fan, and the movable part penetrates through the fixed part from one end of the through hole and can rotate relative to the fixed part; wherein the two ends of the fixed part are provided with a first limiting boss and a second limiting boss which are opposite to each other, and the two ends of the movable part are provided with a third limiting boss and a fourth limiting boss which are opposite to each other; when the movable part rotates to a preset angle, the first limiting boss is correspondingly connected with the third limiting boss in an abutting mode, meanwhile, the second limiting boss is correspondingly connected with the fourth limiting boss in an abutting mode, and the limiting effect is achieved. The utility model aims to solve the problems that an existing head-swinging fan is single in limiting mode, low in strength and prone to failure under the action of external force.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of fan swing head, and in particular to a limiting mechanism applied to a fan swing head. BACKGROUND

[0002] The swing head fan is widely applied to families, offices and industrial sites due to its characteristics of wide-area air supply and flexible adjustment. The core function is to drive the fan head to reciprocate within a certain angle range through a driving module, so as to realize uniform air supply and space coverage. However, the existing swing head fan generally adopts a single limiting structure to control the swing angle. In the use process, only the single limiting structure is relied on, so that the reliability of the limiting mechanism is insufficient, and the limiting mechanism is prone to failure under long-term use or external force interference, which leads to out-of-control swing angle or motor locked-rotor, and affects the service life. CONTENT OF THE UTILITY MODEL

[0003] The application provides a limiting mechanism applied to a fan swing head, so as to solve the problems of single limiting mode, weak strength and easy failure under external force of the existing swing head fan.

[0004] The application provides a limiting mechanism applied to a fan swing head, which comprises:

[0005] A fixed part is provided with a through hole penetrating along the axial direction thereof;

[0006] A movable part is used for being connected with the fan, the movable part is arranged in the fixed part from one end of the through hole and can rotate relative to the fixed part;

[0007] The two ends of the fixed part are provided with opposite first and second limiting bosses, and the two ends of the movable part are provided with opposite third and fourth limiting bosses;

[0008] When the movable part rotates to a preset angle, the first limiting boss and the third limiting boss correspondingly abut, and the second limiting boss and the fourth limiting boss correspondingly abut, so that the limiting effect is formed.

[0009] In a possible implementation, the movable part comprises a mounting bracket and a first gear fixedly connected to the mounting bracket, and the fourth limiting boss is arranged on the outer circumferential side of the first gear.

[0010] In a possible implementation, the first gear is engaged with a second gear, and the second gear is connected with an output shaft of a driving part.

[0011] In a possible implementation, the mounting bracket comprises a mounting portion and a connecting portion extending outward from the mounting portion, the connecting portion is fixedly connected with the first gear, and the mounting portion extends out of the through hole.

[0012] In a possible implementation, the third limiting boss is arranged at one end of the mounting portion close to the fixing member.

[0013] In a possible implementation, the connecting portion further comprises at least two bearings, which are arranged at two ends of the through hole respectively and abut against the outer wall of the connecting portion.

[0014] In a possible implementation, the connecting portion further comprises a bearing pressing plate, which is arranged in the through hole and abuts against the end face of one of the bearings.

[0015] In a possible implementation, the inner wall of the through hole extends radially to form a first supporting boss and a second supporting boss, and the bearings are arranged in the first supporting boss and the second supporting boss respectively.

[0016] Compared with the prior art, the above technical solution provided by the embodiments of the present application has the following advantages:

[0017] When the movable member starts to rotate, it will drive the fan connected thereto to swing. With the rotation of the movable member, the third limiting boss and the fourth limiting boss thereon will gradually approach the first limiting boss and the second limiting boss on the fixing member. When the movable member rotates to a preset angle, the first limiting boss and the third limiting boss abut against each other, and the second limiting boss and the fourth limiting boss abut against each other. This abutment relationship prevents further rotation of the movable member, thereby limiting the swing angle of the fan. The present application forms a double-limiting structure by arranging limiting bosses at both ends, avoids the loss of control of the swing fan caused by the failure of single-side limiting, improves the reliability of the limiting mechanism, and prolongs the service life. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings incorporated into the specification and forming a part thereof, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, for those skilled in the art, other drawings can also be obtained from these drawings without any creative labor.

[0020] One or more embodiments are exemplarily illustrated by pictures in the drawings corresponding thereto, and these exemplary illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, unless otherwise specified. The drawings in the drawings do not constitute a proportional limitation.

[0021] Figure 1 The assembly schematic diagram of the fixing member and the movable member provided by the embodiments of the present application is shown.

[0022] Figure 2 A cross-sectional structure schematic view of the limiting mechanism provided for the embodiment of the present application.

[0023] Figure 3 A cross-sectional structure schematic view of the fixing member provided for the embodiment of the present application.

[0024] Figure 4 A perspective view of the mounting bracket provided for the embodiment of the present application.

[0025] Figure 5 An assembly structure schematic view of the first gear provided for the embodiment of the present application.

[0026] Figure 6 A structure schematic view of the shell provided for the embodiment of the present application.

[0027] Explanation of reference signs:

[0028] 1, fixing member; 101, first limiting boss; 102, second limiting boss; 103, through hole; 1031, first supporting boss; 1032, second supporting boss;

[0029] 2, movable member; 201, third limiting boss; 202, fourth limiting boss; 203, mounting bracket; 2031, mounting part; 2032, connecting part; 204, first gear;

[0030] 3, second gear; 4, driving member; 5, bearing; 6, bearing pressing plate; 7, shell. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present application.

[0032] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplifying the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, reference numerals and / or letters can be repeated in different examples in the present application. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0033] For the convenience of description, spatial relative terms can be used in the specification to describe the relative position relationship or movement condition of one element or feature relative to another element or feature as shown in the drawings, such as "inner", "outer", "inboard", "outboard", "under", "below", "on", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the drawings. For example, if the device in the drawings is turned over or the posture is changed or the movement state is changed, the directional indications will also change accordingly, for example: the element described as "under" or "below" another element or feature will be oriented as "above" or "over" another element or feature. Therefore, the example term "below" can include both upward and downward positions. The device can be additionally oriented (rotated by 90 degrees or in other directions) and the spatial relative relationship descriptors used in the specification are interpreted accordingly.

[0034] In order to solve the problem of single swing fan limiting mode, weak strength and easy failure under external force in the related art, the application provides a limiting mechanism applied to fan swing, avoids swing out of control caused by single limiting failure, improves the reliability of the limiting mechanism, and prolongs the service life.

[0035] Please refer to Figures 1 to 5 The application provides a limiting mechanism applied to fan swing, which comprises:

[0036] The fixed part 1 is provided with a through hole 103 penetrating along the axial direction thereof;

[0037] The movable part 2 is used for being connected with the fan (not shown in the drawings), the movable part 2 is arranged in the fixed part 1 from one end of the through hole 103 and can rotate relative to the fixed part 1;

[0038] The two ends of the fixed part 1 are provided with the first limiting boss 101 and the second limiting boss 102 opposite to each other, and the two ends of the movable part 2 are provided with the third limiting boss 201 and the fourth limiting boss 202 opposite to each other;

[0039] When the movable part 2 rotates to a preset angle, the first limiting boss 101 and the third limiting boss 201 correspondingly abut, and the second limiting boss 102 and the fourth limiting boss 202 correspondingly abut, so as to form a limiting effect.

[0040] In the above technical solution, when the movable part 2 starts to rotate, it will drive the fan connected thereto to swing. With the rotation of the movable part 2, the third limiting boss 201 and the fourth limiting boss 202 thereon will gradually approach the first limiting boss 101 and the second limiting boss 102 on the fixed part 1. When the movable part 2 rotates to a preset angle, the first limiting boss 101 and the third limiting boss 201 correspondingly abut, and at the same time, the second limiting boss 102 and the fourth limiting boss 202 also correspondingly abut. This abutting relationship prevents further rotation of the movable part 2, thereby achieving limiting of the swing angle of the fan. After the limiting is triggered, the movable part 2 is reversely rotated, and when reversely rotated to another preset angle, the first limiting boss 101 and the third limiting boss 201 abut again, and at the same time, the second limiting boss 102 and the fourth limiting boss 202 also abut again, and the movable part 2 is reversed again, forming reciprocating swing. In this application, through the abutting action of the first limiting boss 101 and the third limiting boss 201 and the abutting action of the second limiting boss 102 and the fourth limiting boss 202, the swing out of control caused by single limiting failure is avoided, and the system reliability is improved. Even if one end of the limiting fails due to wear or impact, the other end of the limiting can still protect the safety of the equipment.

[0041] It should be noted that, in a possible embodiment, the axes of the first limiting boss 101 and the second limiting boss 102 and the axes of the third limiting boss 201 and the fourth limiting boss 202 are all parallel to the central axis of the movable part 2. This design helps the fourth limiting boss 202 to abut with the second limiting boss 102 at the same time when the third limiting boss 201 abuts with the first limiting boss 101, thereby achieving limiting of the movable part 2 in multiple directions at the same time. This multi-directional limiting function can ensure that the movable part 2 always remains within the preset range during rotation, avoiding the deviation or overtravel of the movable part 2 caused by insufficient single-direction limiting. At the same time, multi-directional limiting can also improve the resistance of the mechanism to external disturbances such as wind force and vibration, so that the fan swing mechanism can maintain stable operation in various environments.

[0042] In other embodiments, the axes of the first limiting boss 101 and the second limiting boss 102 and the axes of the third limiting boss 201 and the fourth limiting boss 202 can also be non-parallel, as long as the second limiting boss 102 abuts with the fourth limiting boss 201 at the same time when the first limiting boss 101 abuts with the third limiting boss 201. That is, in use, as long as the other two limiting bosses abut at the same time when the two limiting bosses abut, the double limiting function can be achieved.

[0043] Please refer to Figure 2 and Figure 5In one possible embodiment, the movable part 2 comprises a mounting bracket 203 and a first gear 204 fixedly connected to the mounting bracket 203, and the fourth limiting boss 202 is arranged on the outer circumferential side of the first gear 204. When a driving device (such as a motor) drives the gear meshing with the first gear 204 to rotate, the first gear 204 rotates accordingly. Since the first gear 204 is fixedly connected to the mounting bracket 203, the mounting bracket 203 and the fan also rotate together. During the rotation of the first gear 204, the fourth limiting boss 202 moves with the rotation of the first gear 204. When the movable part 2 rotates to a preset angle, the fourth limiting boss 202 abuts against the second limiting boss 102 on the fixed part 1. At the same time, the abutment of the first limiting boss 101 and the third limiting boss 201 forms a limiting action together, preventing further rotation of the movable part 2.

[0044] Please refer to Figure 1 In one possible embodiment, the first gear 204 meshes with a second gear 3, and the second gear 3 is connected to the output shaft of the driving part 4. After the driving part 4 is started, the output shaft thereof starts to rotate, driving the second gear 3 connected thereto to rotate. Since the second gear 3 meshes with the first gear 204, according to the principle of gear transmission, the rotation of the second gear 3 drives the first gear 204 to rotate at a certain transmission ratio. The first gear 204 is fixedly connected to the mounting bracket 203, so the mounting bracket 203 and the fan connected thereto will swing with the rotation of the first gear 204, realizing the swinging action of the fan. When the movable part 2 (including the first gear 204 and the mounting bracket 203) rotates to a preset angle, the first limiting boss 101 and the third limiting boss 201 abut against each other, and the fourth limiting boss 202 and the second limiting boss 102 abut against each other correspondingly, limiting further rotation of the movable part 2. The gear transmission system ensures that the power of the driving part 4 can be smoothly and accurately transmitted to the movable part 2 before the movable part 2 reaches the limiting angle, so that the swinging action of the fan is carried out smoothly.

[0045] It should be noted that the mounting bracket 203 comprises a mounting portion 2031 and a connecting portion 2032 extending outward from the mounting portion 2031, the connecting portion 2032 is fixedly connected with the first gear 204, and the mounting portion 2031 extends out of the through hole 103. When the driving part 4 drives the first gear 204 to rotate through the second gear 3, since the connecting portion 2032 is fixedly connected with the first gear 204, the mounting bracket 203 will rotate accordingly. The mounting portion 2031 extends out of the through hole 103 and is connected with the fan, so the fan also swings with the rotation of the mounting bracket 203. At the same time, the part of the mounting portion 2031 extending out of the through hole 103 also plays a supporting role for the fan, ensuring that the fan can remain stable during the swinging process.

[0046] Meanwhile, the third limiting boss 201 is arranged at the end of the mounting portion 2031 close to the fixing member 1. When the driving member 4 drives the movable member 2 (including the mounting bracket 203 and the first gear 204) to rotate, the fan will swing. With the rotation of the movable member 2, the third limiting boss 201 at the end of the mounting portion 2031 close to the fixing member 1 gradually approaches the first limiting boss 101 on the fixing member 1. When the movable member 2 rotates to a preset angle, the third limiting boss 201 abuts against the first limiting boss 101. This abutting relationship generates a resistance, which prevents the further rotation of the movable member 2, thereby achieving the limiting of the swing angle of the fan. Meanwhile, the second limiting boss 102 and the fourth limiting boss 202 also abut against each other, thereby forming a complete limiting system and ensuring the accurate control of the swing angle of the fan.

[0047] In a possible implementation, the application further includes at least two bearings 5, which are arranged at both ends of the through hole 103 and abut against the outer wall of the connecting portion 2032. When the driving member 4 drives the movable member 2 to rotate, the connecting portion 2032 of the movable member 2 will rotate in the through hole 103 of the fixing member 1. The arrangement of the bearings 5 enables the connecting portion 2032 to be well supported during rotation, thereby avoiding the direct contact between the connecting portion 2032 and the inner wall of the through hole 103, reducing the friction and wear. Meanwhile, the rolling characteristics of the bearings 5 enable the movable member 2 to rotate with a smaller force, thereby reducing the load of the driving member 4 and improving the transmission efficiency of the entire mechanism. In addition, the supporting effect of the bearings 5 can also ensure the accuracy of the movable member 2 during rotation. Since the bearings 5 can provide stable supporting force, the movable member 2 will not shake or deviate during rotation, thereby ensuring the accuracy of the swing angle of the fan.

[0048] Meanwhile, the application further includes a bearing pressing plate 6, which is arranged in the through hole 103 and abuts against the end face of one of the bearings 5. During the operation of the fan swing limiting mechanism, the bearings 5 need to bear the radial and axial forces from the movable member 2. The presence of the bearing pressing plate 6 ensures the stability of the position of the bearings 5 in the axial direction, preventing the bearings 5 from moving due to the force, thereby ensuring the normal work of the bearings 5. The abutment between the bearing pressing plate 6 and the bearings 5 also plays a pre-tightening role, so that the bearings 5 can maintain a certain pre-tightening force during operation, thereby improving the stiffness and rotation accuracy of the bearings. The other bearing 5 will be kept stable under the fixed structure in the fixing member 1.

[0049] It should be noted that the inner wall of the through hole 103 extends radially to form a first support boss 1031 and a second support boss 1032, and the bearing 5 is arranged in the first support boss 1031 and the second support boss 1032, respectively. When the connecting portion 2032 rotates in the through hole 103, the bearing 5 will bear the radial and axial forces from the connecting portion 2032. The first support boss 1031 and the second support boss 1032 can effectively disperse these forces to the inner wall of the through hole 103, avoiding the deformation of the inner wall of the through hole 103 due to excessive local stress. At the same time, the design of the first support boss 1031 and the second support boss 1032 also enhances the structural strength of the inner wall of the through hole 103, so that the through hole 103 can better bear the force from the bearing 5, improving the stability and reliability of the entire mechanism. Since the bearing 5 is installed on the first support boss 1031 and the second support boss 1032, the first support boss 1031 and the second support boss 1032 can provide stable support for the bearing 5. During the operation of the bearing 5, the first support boss 1031 and the second support boss 1032 can reduce the shaking and deviation of the bearing 5, thereby improving the operation accuracy of the bearing 5.

[0050] Please refer to Figure 6 The present application also includes a housing 7, which forms an axially extending mounting cavity (not shown in the figure) inside, and the fixed part 1 is arranged in the mounting cavity. The housing 7 provides mounting space for the fixed part 1 and the movable part 2 and other components, which can effectively protect the internal components from the erosion of external dust, debris, moisture and other factors, prolonging the service life of the components; at the same time, integrating various components in the housing 7 makes the limiting mechanism more compact and regular as a whole, facilitating installation and transportation.

[0051] In particular, one end of the mounting cavity is open, and the mounting portion 2031 extends out of the opening to connect with the fan or other external structure. The design of the mounting portion 2031 extending out of the opening of the mounting cavity makes the limiting mechanism convenient to connect with the fan or other external structure, simplifying the connection structure, improving the reliability and stability of the connection, and also facilitating installation and disassembly. In the present application, the mounting portion 2031 extends out of the opening and connects with the fan, realizing the swing of the fan within a certain range.

[0052] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0053] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0054] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0055] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be connected, or detachable, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0056] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include the direct contact between the first and second features, or the contact between the first and second features through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0057] In the description of the application, reference to "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that a particular feature, structure, material, or characteristic being described is included in at least one embodiment or example of the application. The appearances of the above expressions in various places in the description are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Moreover, the terms "first", "second", "third", etc. are used herein merely as identifiers for the various embodiments or examples, and are not intended to identify a particular order or sequence.

[0058] Obviously, various modifications and changes can be made to the present application without departing from the spirit and scope of the application. It is understood that such modifications and changes are intended to fall within the scope of the application, which is to be interpreted in the broadest sense possible. Accordingly, the proper scope of the present application is to be determined only by the following claims and their equivalents.

[0059] The above description is the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A limiting mechanism applied to a fan swing, characterized in that, The utility model relates to a fixing part is provided with the through -hole along its axial penetration, movable part is used to be connected with fan, movable part is arranged in fixing part from one end of through -hole and can rotate relative to fixing part, wherein, the both ends of fixing part are equipped with opposite first limit boss and second limit boss, the both ends of movable part are equipped with opposite third limit boss and fourth limit boss, when movable part rotates to the preset angle, first limit boss and third limit boss correspond and abut, and second limit boss and fourth limit boss correspond and abut simultaneously, form the limiting effect. The utility model discloses a fixing part is provided with the through -hole along its axial penetration, movable part is used to be connected with fan, movable part is arranged in fixing part from one end of through -hole and can rotate relative to fixing part, wherein, the both ends of fixing part are equipped with opposite first limit boss and second limit boss, the both ends of movable part are equipped with opposite third limit boss and fourth limit boss, when movable part rotates to the preset angle, first limit boss and third limit boss correspond and abut, and second limit boss and fourth limit boss correspond and abut simultaneously, form the limiting effect. The utility model discloses a fixing part is provided with the through -hole along its axial penetration, movable part is used to be connected with fan, movable part is arranged in fixing part from one end of through -hole and can rotate relative to fixing part, wherein, the both ends of fixing part are equipped with opposite first limit boss and second limit boss, the both ends of movable part are equipped with opposite third limit boss and fourth limit boss, when movable part rotates to the preset angle, first limit boss and third limit boss correspond and abut, and second limit boss and fourth limit boss correspond and abut simultaneously, form the limiting effect. The utility model discloses a fixing part is provided with the through -hole along its axial penetration, movable part is used to be connected with fan, movable part is arranged in fixing part from one end of through -hole and can rotate relative to fixing part, wherein, the both ends of fixing part are equipped with opposite first limit boss and second limit boss, the both ends of movable part are equipped with opposite third limit boss and fourth limit boss, when movable part rotates to the preset angle, first limit boss and third limit boss correspond and abut, and second limit boss and fourth limit boss correspond and abut simultaneously, form the limiting effect. The utility model discloses a fixing part is provided with the through -hole along its axial penetration, movable part is used to be connected with fan, movable part is arranged in fixing part from one end of through -hole and can rotate relative to fixing part, wherein, the both ends of fixing part are equipped with opposite first limit boss and second limit boss, the both ends of movable part are equipped with opposite third limit boss and fourth limit boss, when movable part rotates to the preset angle, first limit boss and third limit boss correspond and abut, and second limit boss and fourth limit boss correspond and abut simultaneously, form the limiting effect.

2. The limit mechanism for fan wobble according to claim 1, wherein, ​ 3. The limit mechanism for fan wobble according to claim 2, wherein ​ 4. The limit mechanism for fan wobble according to claim 2, wherein ​ 5. The limit mechanism for fan wobble according to claim 4, wherein ​ 6. The limit mechanism for fan wobble according to claim 4, wherein ​ 7. The limit mechanism for fan wobble according to claim 6, wherein ​ 8. The limit mechanism for fan wobble according to claim 6, wherein, ​

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