Rotation locking structure and folding fan

Abstract

Provided in the present invention are a rotation locking structure and a folding fan. The rotation locking structure comprises a rotation base, a fixed base, a fixed gasket, an elastic gasket and a rotation rod; a first socket cylinder is provided at one end of the rotation base, a sleeve is provided on the fixed base, and a second socket cylinder is fixedly connected to one end of the sleeve; the rotation rod comprises a rod body and a rod base; a plurality of support bridges are formed on the elastic gasket, and the support bridges can generate elastic deformation in the axial direction of the elastic gasket; locking snap bases protruding towards the fixed gasket are formed on two centrally symmetrical support bridges, the outer contours of the locking snap bases being arc-shaped; two locking hole groups are centrally symmetrically formed in the fixed gasket, each locking hole group comprising a plurality of locking holes, and the locking holes being used to be engaged with the locking snap bases. In the present invention, the cooperation of the elastic gasket and the fixed gasket can realize locking on the basis of enabling the relative position adjustment between the fixed base and the rotating base, and assembly can be completed just by means of axial fitting, thereby making the mounting process simple.

Description

A rotating locking structure and a folding fan Technical Field

[0001] This invention relates to the field of fan technology, and more specifically to a rotary locking structure and a folding fan. Background Technology

[0002] For ease of packaging and storage, existing fans are typically designed to be foldable, often using a rotary folding mechanism. The base can rotate relative to the support. Since users need to adjust the fan's angle, the rotation of the base and support should also be able to lock the angle. For example, patent document CN216922578U discloses a telescopic foldable fan with a gear-like adjustment groove in the through hole of the adjustment base and a spring-driven limiting platform on the drive rod. The spring pushes the limiting platform into the adjustment groove to achieve locking. However, in this case, the spring and limiting platform involved in the rotary locking mechanism require radial installation, while other major components are assembled axially, making the installation process inconvenient. Summary of the Invention

[0003] This invention provides a rotary locking structure and a folding fan to solve the problems of poor structural design and inconvenient installation process of the rotary locking structure of folding fans in the prior art.

[0004] To achieve the above objectives, the embodiments of the present invention adopt the following technical solutions:

[0005] A rotary locking structure includes a rotating seat, a fixed seat, a fixed bushing, an elastic bushing, and a rotating rod. A first socket is provided at one end of the rotating seat, and a sleeve is provided on the fixed seat. A second socket coaxial with the sleeve is fixedly connected to one end of the sleeve.

[0006] The rotating rod includes a rod body and a rod seat that are fixedly connected. Both the rod body and the rod seat are cylindrical and coaxial.

[0007] During installation, the rotating locking structure has an elastic bushing that passes through the rod and is fixedly installed on the rod seat, a fixed bushing that is fixedly installed inside the second socket, and the rod passing through the fixed bushing and the sleeve and being inserted into the first socket, and being fixed relative to the first socket.

[0008] Multiple support bridges are formed on the elastic bushing, evenly distributed along the axis of the elastic bushing. The support bridges are raised and close to the fixed bushing, and can produce elastic deformation in the axial direction of the elastic bushing.

[0009] The number of support bridges is even. Two centrally symmetrical support bridges have locking seats that protrude towards the fixed bushing. The outer contour of the locking seats is arc-shaped. Two sets of locking holes are centrally symmetrically arranged around the axis of the fixed bushing. Each set of locking holes includes multiple locking holes that are evenly distributed. The locking holes are used to engage with the locking seats.

[0010] Furthermore, two first positioning holes are symmetrically arranged around the axis of the fixed bushing, and a first positioning seat corresponding to the position and number of the first positioning holes is provided on the inner bottom surface of the second socket.

[0011] Furthermore, the end of the rod away from the base has a fitted slope, which makes the cross-section of the rod at the fitted slope non-circular;

[0012] The inner side of the first socket is surrounded by multiple fixing teeth, and the outline formed by the multiple fixing teeth matches the cross-sectional outline of the rod at the fitting slope.

[0013] Furthermore, the bottom of the first socket is provided with multiple first fixing holes, and the end of the rod away from the rod seat is provided with multiple second fixing holes.

[0014] Furthermore, a fixed platform is formed between two adjacent support bridges on the elastic bushing, which protrudes towards the rod seat. A second positioning hole is provided in the fixed platform, and a second positioning seat is provided on the rod seat corresponding to the position and number of the second positioning hole.

[0015] Furthermore, at least one support bridge is provided with a third positioning hole, and the rod seat is also provided with a third positioning seat corresponding to the number of positions of the third positioning holes.

[0016] A folding fan includes a base, a support, a fan body, and the aforementioned rotating locking structure. The support is assembled into a U-shape by an arc-shaped frame and two cantilever arms.

[0017] A rotating locking structure is installed on each side of the base, wherein the fixed seat is fixedly installed inside the base, and the rotating seat is fixedly connected to the end of the cantilever away from the arc frame;

[0018] The fan body is rotatably connected to the two cantilever arms of the bracket on both sides, and the fan body is installed close to the arc-shaped frame.

[0019] Furthermore, the cantilever includes a first cantilever and a second cantilever, wherein the first cantilever is hollow, allowing the second cantilever to be inserted into the first cantilever and move along the length of the first cantilever, thus making the cantilever retractable.

[0020] The beneficial effects of this invention are as follows:

[0021] In this invention, the relative positions of the fixed seat and the rotating seat can be adjusted by the cooperation of the elastic bushing and the fixed bushing, and locking can be achieved. Furthermore, the assembly can be completed simply by assembling in the axial direction, making the installation process easy. Attached Figure Description

[0022] Figure 1 is a 3D view of a folding fan;

[0023] Figure 2 is an exploded view of the rotation locking structure;

[0024] Figure 3 is a three-dimensional view of the rotating seat;

[0025] Figure 4 is a side view of the rotating seat;

[0026] Figure 5 is a three-dimensional view of the mounting base;

[0027] Figure 6 is a three-dimensional view of the mounting base from another angle;

[0028] Figure 7 is a three-dimensional view of the fixed bushing;

[0029] Figure 8 is a side view of the fixed bushing;

[0030] Figure 9 is a three-dimensional view of the elastic bushing;

[0031] Figure 10 is a side view of the elastic bushing;

[0032] Figure 11 is a three-dimensional view of the rotating rod;

[0033] Figure 12 is a side view of the rotating rod;

[0034] Figure 13 is a schematic diagram of a folding fan fully folded;

[0035] Figure 14 is a front view of the folding fan in the cantilever extended state;

[0036] Figure 15 is a side view of the folding fan in the cantilever extended state.

[0037] Explanation of reference numerals in the attached drawings: 1. Base; 2. Bracket; 21. Cantilever; 221. First cantilever; 222. Second cantilever; 22. Arc-shaped frame; 3. Fan body; 4. Rotary locking structure; 41. Rotating seat; 411. First socket; 412. Fixing tooth; 413. First fixing hole; 42. Fixing seat; 421. Sleeve; 4211. Second socket; 42111. First positioning seat; 43. Fixing bushing; 431. 432. Positioning hole; 432. Locking hole group; 4321. Locking hole; 44. Elastic bushing; 441. Fixing platform; 4411. Second positioning hole; 442. Support bridge; 443. Locking bracket; 444. Third positioning hole; 45. Rotating rod; 451. Rod body; 4511. Fitting slope; 4512. Second fixing hole; 452. Rod seat; 4521. Second positioning seat; 4522. Third positioning seat. Detailed Implementation

[0038] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0039] As shown in Figure 1, this embodiment of the invention provides a folding fan, which includes a base 1, a support 2, a fan body 3, and a rotation locking structure 4. The support 2 is assembled into a U-shape by an arc-shaped frame 22 and two cantilever arms 21. A rotation locking structure 4 is installed on each side of the base 1. The end of the cantilever arm 21 away from the arc-shaped frame 22 is rotatably connected to the rotation locking structure 4, so that the support 2 can rotate around the base 1. The two sides of the fan body 3 are rotatably connected to the two cantilever arms 21 of the support 2, and the installation position of the fan body 3 is close to the arc-shaped frame 22. Through the design that the support 2 can rotate around the base 1, combined with the design that the fan body 3 can rotate within the support 2, the folding of the folding fan is realized. As shown in Figure 13, in the fully folded state, both the base 1 and the fan body 3 can be rotated to be parallel to the extension direction of the cantilever arm 21, thereby facilitating storage.

[0040] As shown in Figures 2-12, this embodiment of the invention provides a rotary locking structure 4, which includes a rotating seat 41, a fixed seat 42, a fixed bushing 43, an elastic bushing 44, and a rotating rod 45. The rotating seat 41 is used to connect the bracket 2 in the folding fan (specifically, it is connected to the end of the cantilever 21 away from the arc frame 22), and one end of the rotating seat 41 is provided with a first socket 411. The fixed seat 42 is used to be fixedly installed inside the base 1, and a sleeve 421 is provided on the fixed seat 42. One end of the sleeve 421 is fixedly connected to a second socket 4211 coaxial with the sleeve 421. The rotating rod 45 includes a rod body 451 and a rod seat 452 fixedly connected. Both the rod body 451 and the rod seat 452 are cylindrical and coaxial.

[0041] When the rotary locking structure 4 is installed, the elastic bushing 44 passes through the rod body 451 and is fixedly installed on the rod seat 452 (the rod seat 452 and the elastic bushing 44 cannot rotate relative to each other), the fixed bushing 43 is fixedly installed inside the second socket 4211 (the fixed bushing 43 and the second socket 4211 cannot rotate relative to each other), the rod body 451 passes through the fixed bushing 43 and the sleeve 421 and is inserted into the first socket 411, and is relatively fixed with the first socket 411 (at this time, the rod body 451, the elastic bushing 44, the fixed bushing 43, the sleeve 421 and the first socket 411 are coaxial).

[0042] As a major improvement of the present invention, a plurality of support bridges 442 are formed on the elastic bushing 44, which are evenly distributed around the axis of the elastic bushing 44. The support bridges 442 are raised and close to the fixed bushing 43. Obviously, the support bridges 442 can generate elastic deformation in the axial direction of the elastic bushing 44. The number of support bridges 442 is even (in a preferred embodiment, four support bridges 442 are formed on the elastic bushing 44). Two centrally symmetrical support bridges 442 are formed with locking seats 443 that are raised toward the fixed bushing 43. The outer contour of the locking seats 443 is arc-shaped. Two sets of locking hole groups 432 are centrally symmetrically arranged around the axis of the fixed bushing 43. Each locking hole group 432 includes a plurality of locking holes 4321 that are evenly distributed. The locking holes 4321 are used to engage with the locking seats 443.

[0043] In the assembled state, in the rotary locking structure 4 provided by the present invention, the locking seat 443 is engaged with the locking hole 4321, preventing the elastic bushing 44 and the fixed bushing 43 from rotating relative to each other. However, since the support bridge 442 can generate elastic deformation in the axial direction of the elastic bushing 44, and the outer contour of the locking seat 443 is arc-shaped, when an external force is applied to drive the elastic bushing 44 and the fixed bushing 43 to rotate relative to each other, the compression of the locking seat 443 causes the support bridge 442 to compress in the axial direction of the elastic bushing 44, thereby locking the seat. The seat 443 disengages from the locking hole 4321 and slides into another locking hole 4321 adjacent to the disengaged locking hole 4321 in the locking hole group 432. After that, if the external force is stopped, the relative position of the elastic bushing 44 and the fixed bushing 43 is fixed again. In the rotary locking structure 4 of the present invention, the cooperation of the elastic bushing 44 and the fixed bushing 43 can not only realize the adjustment of the relative position of the fixed seat 42 and the rotating seat 41, but also realize locking. Moreover, the assembly can be completed by assembling only in the axial direction, and the installation process is simple.

[0044] Specifically, in order to fix the fixed bushing 43 and the second socket 4211, two first positioning holes 431 are symmetrically arranged on the fixed bushing 43 around the axis of the fixed bushing 43. The inner bottom surface of the second socket 4211 is provided with a first positioning seat 42111 corresponding to the position and number of the first positioning holes 431 (obviously, the position of the first positioning holes 431 is offset from the locking hole group 432).

[0045] Specifically, in order to fix the rotating rod 45 and the first socket 411, the end of the rod 451 away from the rod base 452 is formed with a fitting slope 4511, so that the cross section of the rod 451 at the fitting slope 4511 is non-circular; multiple fixing teeth 412 are arranged around the inner side of the first socket 411, and the contour formed by the multiple fixing teeth 412 matches the cross section contour of the rod 451 at the fitting slope 4511, so that the rod 451 can be inserted into the first socket 411, and the rod 451 and the first socket 411 cannot rotate relative to each other.

[0046] Furthermore, to reinforce the fixed connection between the rod 451 and the first socket 411, a plurality of first fixing holes 413 are provided through the bottom of the first socket 411, and a plurality of second fixing holes 4512 are provided at the end of the rod 451 away from the rod base 452. After the rod 451 is inserted into the first socket 411, fasteners such as bolts and screws are inserted through the first fixing holes 413 and into the second fixing holes 4512 to fix the relative position of the rod 451 and the first socket 411.

[0047] Specifically, in order to fix the elastic bushing 44 and the rod seat 452, a fixing platform 441 that protrudes towards the rod seat 452 is formed between two adjacent support bridges 442 on the elastic bushing 44. A second positioning hole 4411 is provided in the fixing platform 441. A second positioning seat 4521 corresponding to the position and number of the second positioning hole 4411 is provided on the rod seat 452. The elastic bushing 44 and the rod seat 452 are fixed by the second positioning seat 4521 being embedded in the second positioning hole 4411.

[0048] Furthermore, in order to keep the relative position of the elastic bushing 44 and the rod seat 452 constant during repeated assembly, a third positioning hole 444 is provided on at least one support bridge 442, and a third positioning seat 4522 corresponding to the number of positions of the third positioning holes 444 is also provided on the rod seat 452. The relative position of the elastic bushing 44 and the rod seat 452 is kept constant during repeated assembly by embedding the third positioning seat 4522 into the third positioning hole 444.

[0049] Furthermore, considering the height adjustment requirements of the fan body 3 in the usage scenarios of the folding fan, as shown in Figures 13-15, in an improved embodiment of the folding fan of the present invention, the cantilever 22 is telescopic, and the cantilever 22 includes a first cantilever 221 and a second cantilever 222, wherein the first cantilever 221 is hollow, so that the second cantilever 222 can be inserted into the first cantilever 221 and move along the length direction of the first cantilever, thereby realizing the telescopic extension of the cantilever 22 to adjust the height of the fan body 3.

[0050] The embodiments described above merely illustrate implementation methods of the present invention and should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A rotation locking structure (4), characterized in that, It includes a rotating seat (41), a fixed seat (42), a fixed bushing (43), an elastic bushing (44), and a rotating rod (45). One end of the rotating seat (41) is provided with a first socket (411), and a sleeve (421) is provided on the fixed seat (42). One end of the sleeve (421) is fixedly connected to a second socket (4211) coaxial with the sleeve (421). The rotating rod (45) includes a rod body (451) and a rod seat (452) that are fixedly connected. Both the rod body (451) and the rod seat (452) are cylindrical and are coaxial. When the rotary locking structure (4) is installed, the elastic bushing (44) passes through the rod body (451) and is fixedly installed on the rod seat (452), the fixed bushing (43) is fixedly installed in the second socket (4211), the rod body (451) passes through the fixed bushing (43) and the sleeve (421) and is inserted into the first socket (411), and is fixed relative to the first socket (411); Multiple support bridges (442) are formed on the elastic bushing (44) and are evenly distributed around the axis of the elastic bushing (44). The support bridges (442) are raised and close to the fixed bushing (43). The support bridges (442) can generate elastic deformation in the axial direction of the elastic bushing (44). The number of support bridges (442) is even. Two centrally symmetrical support bridges (442) have locking seats (443) that protrude toward the fixed bushing (43). The outer contour of the locking seat (443) is arc-shaped. Two sets of locking hole groups (432) are centrally symmetrically arranged around the axis of the fixed bushing (43). Each locking hole group (432) includes multiple locking holes (4321) that are evenly distributed. The locking holes (4321) are used to fit with the locking seat (443).

2. The rotation locking structure according to claim 1, characterized in that, Two first positioning holes (431) are symmetrically arranged around the axis of the fixed bushing (43). A first positioning seat (42111) corresponding to the position and number of the first positioning holes (431) is provided on the inner bottom surface of the second socket (4211).

3. The rotation locking structure (4) according to claim 1, characterized in that, The end of the rod (451) away from the rod seat (452) forms a fitting slope (4511), so that the cross section of the rod (451) at the fitting slope (4511) is non-circular; The inner side of the first socket (411) is provided with multiple fixing teeth (412), and the outline formed by the multiple fixing teeth (412) matches the cross-sectional outline of the rod (451) at the fitting slope (4511).

4. The rotation locking structure (4) according to claim 3, characterized in that, The bottom of the first socket (411) is provided with multiple first fixing holes (413), and the end of the rod (451) away from the rod seat (452) is provided with multiple second fixing holes (4512).

5. The rotation locking structure (4) according to claim 1, characterized in that, A fixed platform (441) is formed between two adjacent support bridges (442) on the elastic bushing (44) and protrudes toward the rod seat (452). A second positioning hole (4411) is provided in the fixed platform (441), and a second positioning seat (4521) is provided on the rod seat (452) corresponding to the position and number of the second positioning hole (4411).

6. The rotation locking structure (4) according to claim 5, characterized in that, At least one support bridge (442) is provided with a third positioning hole (444), and the rod seat (452) is also provided with a third positioning seat (4522) corresponding to the number of positions of the third positioning hole (444).

7. A folding fan, characterized in that, It includes a base (1), a bracket (2), a fan body (3), and a rotary locking structure (4) according to any one of claims 1-6, wherein the bracket (2) is assembled into a U-shape by an arc frame (22) and two cantilever arms (21); A rotating locking structure (4) is installed on each side of the base (1), wherein the fixed seat (42) is fixedly installed inside the base (1), and the rotating seat (41) is fixedly connected to the end of the cantilever (21) away from the arc frame (22); The two sides of the fan body (3) are rotatably connected to the two cantilever (21) of the bracket (2), and the installation position of the fan body (3) is close to the arc frame (22).

8. The folding fan according to claim 7, characterized in that, The cantilever (22) includes a first cantilever (221) and a second cantilever (222), wherein the first cantilever (221) is hollow, so that the second cantilever (222) can be inserted into the first cantilever (221) and move along the length direction of the first cantilever (221), so that the cantilever (22) is telescopic.

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