Rotary locking structure and folding fan

Abstract

The invention provides a rotary locking structure and a folding fan, the rotary locking structure comprises a rotary seat, a fixed seat, a fixed lining ring, an elastic lining ring and a rotary rod, one end of the rotary seat is provided with a first socket cylinder, the fixed seat is provided with a sleeve, and one end of the sleeve is fixedly connected with a second socket cylinder; the rotating rod comprises a rod body and a rod seat; a plurality of supporting bridges are formed on the elastic lining ring, and the supporting bridges can generate elastic deformation in the axis direction of the elastic lining ring; locking clamping bases protruding towards the fixed lining ring are formed on the two centrosymmetric supporting bridges, the outer contour of each locking clamping base is in an arc shape, two locking hole sets are formed in the fixed lining ring in a centrosymmetric mode, each locking hole set comprises a plurality of locking holes, and the locking holes are used for being embedded into the locking clamping bases. According to the invention, through the cooperation of the elastic lining ring and the fixed lining ring, the locking can be realized on the basis of realizing the relative position adjustment of the fixed seat and the rotating seat, and the assembly can be completed only by assembling in the axial direction, so that the installation process is simple and easy.

Description

Technical Field

[0001] The present invention relates to the technical field of fans, and in particular to a rotation locking structure and a folding fan. Background Art

[0002] In order to facilitate packaging and storage, fans in the prior art are usually designed to be foldable, and usually adopt rotational folding. The base can rotate relative to the bracket. Since users need to adjust the fan placement angle, the rotation of the base and the bracket should also be able to lock the angle. For example, the patent document with document number CN216922578U discloses a retractable and foldable fan, which has an adjustment groove similar to a gear tooth in the through hole of the adjustment seat, and a spring-driven limit table is provided on the drive rod. The limit table is pushed by the spring to snap into the adjustment groove to achieve locking. However, the spring and the limit table of the components involved in the rotational locking need to be installed radially, and the other main components are all assembled axially, which makes the installation process not simple enough. Summary of the invention

[0003] The embodiments of the present invention provide a rotation locking structure and a folding fan to solve the problems of poor structural design and inconvenient installation process of the rotation locking structure of the folding fan 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 comprises a rotating seat, a fixed seat, a fixed bushing, an elastic bushing and a rotating rod, wherein a first socket sleeve is arranged at one end of the rotating seat, a sleeve is arranged on the fixed seat, and a second socket sleeve coaxial with the sleeve is fixedly connected at one end of the sleeve;

[0006] The rotating rod comprises a rod body and a rod seat which are fixedly connected, the rod body and the rod seat are both cylindrical, and the rod body and the rod seat are coaxial;

[0007] When the rotary locking structure is installed, the elastic bushing passes through the rod body and is fixedly installed on the rod seat, the fixed bushing is fixedly installed in the second socket sleeve, the rod body passes through the fixed bushing and the sleeve and is inserted into the first socket sleeve, and is relatively fixed to the first socket sleeve;

[0008] The elastic liner is provided with a plurality of support bridges evenly distributed around the axis of the elastic liner, the support bridges are raised and close to the fixed liner, and the support bridges can generate elastic deformation in the axial direction of the elastic liner;

[0009] The number of support bridges is an even number, wherein two centrally symmetrical support bridges are formed with locking sockets protruding toward the fixed bushing, and the outer contour of the locking socket is arc-shaped, and two groups of locking hole groups are centrally symmetrically arranged on the fixed bushing around the axis of the fixed bushing, and each locking hole group includes a plurality of locking holes distributed at equal intervals, and the locking holes are used to engage with the locking socket.

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

[0011] Furthermore, an engaging slope is formed at one end of the rod body away from the rod seat, so that the cross section of the rod body at the engaging slope is non-circular;

[0012] A plurality of fixing teeth are arranged around the inner side of the first socket, and the contour formed by the plurality of fixing teeth matches the cross-sectional contour of the rod body at the engaging slope surface.

[0013] Furthermore, a plurality of first fixing holes are provided through the bottom of the first socket, and a plurality of second fixing holes are provided at one end of the rod body away from the rod seat.

[0014] Furthermore, a fixing platform raised toward the rod seat is formed between two adjacent supporting bridges on the elastic bushing, a second positioning hole is opened in the fixing platform, and a second positioning seat corresponding to the position and number of the second positioning holes is arranged on the rod seat.

[0015] Furthermore, at least one of the supporting bridges is provided with third positioning holes, and the rod seat is also provided with third positioning seats whose number corresponds to the positions of the third positioning holes.

[0016] A folding fan comprises a base, a bracket, a fan body and the aforementioned rotation locking structure, wherein the bracket is assembled into a U shape by an arc frame and two cantilevers;

[0017] A rotating locking structure is installed on both sides 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] Both sides of the fan body are rotatably connected to the two cantilevers of the bracket respectively, and the installation position of the fan body is close to the arc frame.

[0019] Furthermore, the cantilever comprises a first cantilever and a second cantilever, wherein the first cantilever is hollow, so that the second cantilever can be inserted into the first cantilever and move along the length direction of the first cantilever, so that the cantilever is retractable.

[0020] The beneficial effects of the present invention are:

[0021] In the present invention, by cooperating with the elastic bushing and the fixed bushing, locking can be achieved on the basis of being able to adjust the relative positions of the fixed seat and the rotating seat, and assembly can be completed by only assembling in the axial direction, and the installation process is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional diagram of a folding fan;

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

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

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

[0026] Figure 5 is a three-dimensional diagram of the fixed seat;

[0027] Figure 6 A three-dimensional diagram of the fixing seat from another angle;

[0028] Figure 7 A three-dimensional diagram of a fixed bushing;

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

[0030] Fig. 9 is a stereogram of an elastic bushing;

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

[0032] Fig.11 is a three-dimensional diagram of a rotating rod;

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

[0034] Fig.13 A schematic diagram of a folding fan being fully folded;

[0035] Fig.14 A front view of the folding fan in a cantilevered extended state;

[0036] Fig.15 A side view of a folding fan in the cantilevered extended state.

[0037] Description of reference numerals:

[0038] 1. Base; 2. Bracket; 21. Cantilever; 221. First cantilever; 222. Second cantilever; 22. Arc frame; 3. Fan body; 4. Rotation locking structure; 41. Rotating seat; 411. First socket; 412. Fixed tooth; 413. First fixing hole; 42. Fixed seat; 421. Sleeve; 4211. Second socket; 42111. First positioning seat; 43. Fixed bushing; 431. First A positioning hole; 432, a locking hole group; 4321, a locking hole; 44, an elastic bushing; 441, a fixing platform; 4411, a second positioning hole; 442, a supporting bridge; 443, a locking seat; 444, a third positioning hole; 45, a rotating rod; 451, a rod body; 4511, an engaging slope; 4512, a second fixing hole; 452, a rod seat; 4521, a second positioning seat; 4522, a third positioning seat. DETAILED DESCRIPTION

[0039] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0040] like Figure 1 As shown, an embodiment of the present invention provides a folding fan, which includes a base 1, a bracket 2, a fan body 3 and a rotation locking structure 4. The bracket 2 is assembled into a U shape by an arc frame 22 and two cantilevers 21; a rotation locking structure 4 is installed on both sides of the base 1, and one end of the cantilever 21 away from the arc frame 22 is rotatably connected to the rotation locking structure 4, so that the bracket 2 can rotate around the base 1; the two sides of the fan body 3 are rotatably connected to the two cantilevers 21 of the bracket 2, and the installation position of the fan body 3 is close to the arc frame 22; the folding of the folding fan is achieved by the design that the bracket 2 can rotate around the base 1, combined with the design that the fan body 3 can rotate in the bracket 2; as shown in FIG. Fig.13 As shown, in the fully folded state, the base 1 and the fan body 3 can be rotated to be parallel to the extension direction of the cantilever 21, so as to facilitate storage.

[0041] like Figure 2-12 As shown, an embodiment of the present invention provides a rotation 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; wherein the rotating seat 41 is used to connect the bracket 2 in the folding fan (specifically connected to the end of the cantilever 21 away from the arc frame 22), and a first socket 411 is provided at one end of the rotating seat 41; 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, and 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, the rod body 451 and the rod seat 452 are both cylindrical, and the rod body 451 and the rod seat 452 are coaxial;

[0042] When the rotation 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 in the second socket sleeve 4211 (the fixed bushing 43 and the second socket sleeve 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 sleeve 411, and is relatively fixed to the first socket sleeve 411 (at this time, the rod body 451, the elastic bushing 44, the fixed bushing 43, the sleeve 421 and the first socket sleeve 411 are coaxial);

[0043] As a major improvement of the present invention, a plurality of 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. Obviously, the support bridges 442 can produce elastic deformation in the axial direction of the elastic bushing 44. The number of the support bridges 442 is an even number (in a preferred embodiment, four support bridges 442 are formed on the elastic bushing 44), wherein two centrally symmetrical support bridges 442 are formed with locking seats 443 that are raised toward the fixed bushing 43, and the outer contour of the locking seats 443 is arc-shaped, and two groups of locking hole groups 432 are centrally symmetrically arranged around the axis of the fixed bushing 43 on the fixed bushing 43, and each locking hole group 432 includes a plurality of locking holes 4321 distributed at equal intervals, and the locking holes 4321 are used to engage with the locking seat 443.

[0044] In the assembled state, in the rotary locking structure 4 provided by the present invention, the locking card seat 443 is engaged with the locking hole 4321, so that the elastic bushing 44 and the fixed bushing 43 cannot rotate relative to each other. However, since the support bridge 442 can produce elastic deformation in the axial direction of the elastic bushing 44, and the outer contour of the locking card seat 443 is arc-shaped, when an external force is applied to drive the elastic bushing 44 and the fixed bushing 43 to twist relative to each other, the support bridge 442 is compressed in the axial direction of the elastic bushing 44 due to the extrusion of the locking card seat 443, thereby locking the card seat 443. The seat 443 comes out of the locking hole 4321 and slides into another locking hole 4321 in the locking hole group 432 which is adjacent to the locking hole 4321 that has come out. If the external force is stopped thereafter, the relative positions of the elastic bushing 44 and the fixed bushing 43 are fixed again. In the rotary locking structure 4 of the present invention, the elastic bushing 44 and the fixed bushing 43 cooperate with each other, so as to realize the relative position adjustment of the fixed seat 42 and the rotating seat 41 and also realize locking. Moreover, the assembly can be completed by assembling in the axial direction only, and the installation process is simple.

[0045] Specifically, in order to achieve the fixation of the fixed bushing 43 and the second socket sleeve 4211, two first positioning holes 431 are symmetrically arranged on the fixed bushing 43 around the axis center of the fixed bushing 43, and a first positioning seat 42111 corresponding to the position and number of the first positioning holes 431 is arranged on the inner bottom surface of the second socket sleeve 4211 (obviously, the position of the first positioning hole 431 is staggered with the locking hole group 432).

[0046] Specifically, in order to achieve the fixation of the rotating rod 45 and the first socket cylinder 411, an engaging slope 4511 is formed at one end of the rod body 451 away from the rod seat 452, so that the cross-section of the rod body 451 at the engaging slope 4511 is non-circular; a plurality of fixing teeth 412 are arranged around the inner side of the first socket cylinder 411, and the contour formed by the plurality of fixing teeth 412 is matched with the cross-sectional contour of the rod body 451 at the engaging slope 4511, so that the rod body 451 can be inserted and installed in the first socket cylinder 411, and the rod body 451 and the first socket cylinder 411 cannot rotate relative to each other.

[0047] Furthermore, in order to strengthen the fixed connection between the rod body 451 and the first socket cylinder 411, a plurality of first fixing holes 413 are provided through the bottom of the first socket cylinder 411, and a plurality of second fixing holes 4512 are provided at one end of the rod body 451 away from the rod seat 452. After the rod body 451 is inserted and installed in the first socket cylinder 411, the relative positions of the rod body 451 and the first socket cylinder 411 are fixed by inserting fasteners such as bolts and screws through the first fixing holes 413 and into the second fixing holes 4512.

[0048] Specifically, in order to achieve the fixation of the elastic bushing 44 and the rod seat 452, a fixing platform 441 that bulges toward the rod seat 452 is formed between two adjacent support bridges 442 on the elastic bushing 44, and a second positioning hole 4411 is opened in the fixing platform 441. The rod seat 452 is provided with a second positioning seat 4521 corresponding to the position and number of the second positioning hole 4411, and 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.

[0049] Furthermore, in order to ensure that the relative position of the elastic bushing 44 and the rod seat 452 remains constant when they are repeatedly assembled, a third positioning hole 444 is provided on at least one support bridge 442, and the rod seat 452 is also provided with third positioning seats 4522 corresponding to the number of the positions of the third positioning holes 444. The third positioning seats 4522 are embedded in the third positioning holes 444 to ensure that the relative position of the elastic bushing 44 and the rod seat 452 remains constant when they are repeatedly assembled.

[0050] In addition, considering the use scenario of the folding fan, the height adjustment requirement of the fan body 3 is required, such as Figure 13-15As shown, in an improved embodiment of the folding fan of the present invention, the cantilever 22 is retractable, 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 extension and retraction of the cantilever 22 to adjust the height of the fan body 3.

[0051] The above-described embodiments only express the implementation methods of the present invention, but they cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A rotation locking structure (4), characterized in that: The invention comprises a rotating seat (41), a fixed seat (42), a fixed bushing (43), an elastic bushing (44) and a rotating rod (45); a first socket sleeve (411) is arranged at one end of the rotating seat (41); a sleeve (421) is arranged on the fixed seat (42); and a second socket sleeve (4211) coaxial with the sleeve (421) is fixedly connected at one end of the sleeve (421); The rotating rod (45) comprises a rod body (451) and a rod seat (452) which are fixedly connected, the rod body (451) and the rod seat (452) are both cylindrical, and the rod body (451) and the rod seat (452) are coaxial; When the rotation 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 sleeve (4211), and the rod body (451) passes through the fixed bushing (43) and the sleeve (421) and is inserted into the first socket sleeve (411), and is relatively fixed to the first socket sleeve (411); The elastic liner (44) is formed with a plurality of support bridges (442) evenly distributed around the axis of the elastic liner (44), the support bridges (442) are raised and close to the fixed liner (43), and the support bridges (442) can generate elastic deformation in the axial direction of the elastic liner (44); The number of the support bridges (442) is an even number, wherein a locking seat (443) protruding toward the fixed bushing (43) is formed on two centrally symmetrical support bridges (442), and the outer contour of the locking seat (443) is arc-shaped, and two groups of locking hole groups (432) are symmetrically arranged on the fixed bushing (43) around the axis of the fixed bushing (43), and each locking hole group (432) includes a plurality of locking holes (4321) distributed at equal intervals, and the locking holes (4321) are used to be engaged 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 on the fixed bushing (43) around the axis of the fixed bushing (43), and first positioning seats (42111) corresponding to the positions and numbers of the first positioning holes (431) are arranged on the inner bottom surface of the second socket sleeve (4211).

3. The rotation locking structure (4) according to claim 1, characterized in that: An engaging slope (4511) is formed at one end of the rod body (451) away from the rod seat (452), so that the cross section of the rod body (451) at the engaging slope (4511) is non-circular; A plurality of fixing teeth (412) are arranged around the inner side of the first socket (411), and the contour formed by the plurality of fixing teeth (412) matches the cross-sectional contour of the rod body (451) at the engaging slope surface (4511).

4. The rotation locking structure (4) according to claim 3, characterized in that: 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 one end of the rod body (451) away from the rod seat (452).

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

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

7. A folding fan, characterized in that: It comprises a base (1), a bracket (2), a fan body (3) and a rotation locking structure (4) according to any one of claims 1 to 6, wherein the bracket (2) is assembled into a U shape by an arc frame (22) and two cantilevers (21); A rotation locking structure (4) is respectively installed on both sides 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 an 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 cantilevers (21) of the bracket (2), and the installation position of the fan body (3) is close to the arc-shaped bracket (22).

8. The folding fan according to claim 7, characterized in that: The cantilever (22) comprises 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 retractable.

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