Rotation lock structure and folding fan

Abstract

To provide a rotation lock structure and a folding fan with a simple installation process. [Solution] The rotation lock structure includes a rotating seat (41), a fixed seat (42), a fixed liner (43), an elastic liner (44), and a rotating lever (45), a first receiving tube is provided at one end of the rotating seat, a sleeve is provided on the fixed seat, and a second receiving tube is fixedly connected to one end of the sleeve, the rotating lever includes a lever body and a lever seat, a plurality of support bridges are formed on the elastic liner, the support bridges are capable of elastically deforming in the axial direction of the elastic liner, two support bridges are formed with lockup holders that bulge toward the fixed liner and the outer contour of the lockup holder is arc-shaped, and two groups of lockup holes are provided symmetrically about the center of the fixed liner, each lockup hole group includes a plurality of lockup holes, and the lockup holes engage with the lockup holder.

Description

[Technical field]

[0001] The present invention relates to the field of fan technology, and in particular to a rotation lock structure and a folding fan. [Background technology]

[0002] In order to facilitate packaging and storage, in the prior art, fans are usually designed to be foldable, and usually adopt rotation folding, and its base can rotate relative to the bracket, and since users need to adjust the arrangement angle of the fan, 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 telescopic foldable fan in which the through hole of the adjustment base is provided with an adjustment groove such as a gear tooth, the driving lever is provided with a spring-driven stopper base, and the stopper base is pressed by the spring to engage with the adjustment groove to achieve locking. However, the spring and stopper base of the rotation-locked parts need to be installed in the radial direction, and all other main parts are assembled in the axial direction, and the installation process is not simple. Summary of the Invention

[0003] The present invention provides a rotation lock structure and a folding fan to solve the problems of the poor structural design of the rotation lock structure of the folding fan in the prior art and the inconvenient installation process.

[0004] In order to achieve the above object, the embodiment of the present invention employs the following technical solutions.

[0005] The rotation lock structure includes a rotating seat, a fixed seat, a fixed liner, an elastic liner, and a rotating lever; A first receiving cylinder is provided at one end of the rotating seat, a sleeve is provided at the fixed seat, and a second receiving cylinder is fixedly connected to one end of the sleeve and is coaxial with the sleeve; The pivot lever includes a lever body and a lever seat which are fixedly connected to each other, the lever body and the lever seat are both cylindrical, and the lever body and the lever seat are coaxial; When the rotation lock mechanism is installed, the elastic liner passes through the lever body and is fixed and attached to the lever seat, the fixed liner is fixed and attached in the second receiving tube, the lever body passes through the fixed liner and the sleeve and is inserted into the first receiving tube and fixed to the first receiving tube; The elastic liner is formed with a plurality of support bridges uniformly distributed around the axis of the elastic liner, the support bridges bulge out and approach the fixed liner, and the support bridges can generate elastic deformation in the axial direction of the elastic liner; The number of support bridges is an even number, and two support bridges that are symmetrical about their centers have lockup holders formed therein that bulge toward the fixed liner, the outer contour of the lockup holder is arc-shaped, and the fixed liner has two groups of lockup holes that are symmetrical about the axis of the fixed liner, each group of lockup holes including a plurality of lockup holes distributed at equal intervals, and the lockup holes engage with the lockup holder.

[0006] Furthermore, the fixed liner is provided with two first positioning holes symmetrically about the axis of the fixed liner, and the inner bottom surface of the second receiving tube is provided with first positioning seats corresponding to the positions and number of the first positioning holes.

[0007] Furthermore, a fitting inclined surface is formed at one end of the lever body that is away from the lever seat, and the cross section of the fitting inclined surface of the lever body is non-circular, A plurality of fixing teeth are provided around the inside of the first receiving tube, and the contour formed by the surrounding of the plurality of fixing teeth matches the contour of the cross section of the fitting slope of the lever body.

[0008] Furthermore, a plurality of first fixing holes are formed through the inner bottom of the first receiving cylinder, and a plurality of second fixing holes are formed at one end of the lever body remote from the lever seat.

[0009] Furthermore, a fixed base is formed between two support bridges adjacent to the elastic liner, bulging toward the lever seat, a second positioning hole is opened in the fixed base, and a second positioning seat corresponding to the position and number of the second positioning holes is provided on the lever seat.

[0010] Furthermore, at least one of the support bridges has a third positioning hole formed therein, and the lever seat is further provided with a third positioning seat corresponding in position and number to the third positioning hole.

[0011] The folding fan includes a base, a bracket, a fan body, and the rotation lock structure. The bracket is assembled into a U-shape by one arc frame and two cantilevers; A rotation lock structure is respectively installed on both sides of the base, the fixed base is fixedly installed inside the base, and the rotating base is fixedly connected to one end of the cantilever remote from the arc frame; Both sides of the fan body are respectively pivotally connected to two cantilevers of the bracket, and the mounting position of the fan body is adjacent to the arc frame.

[0012] Further, the cantilever includes a first cantilever and a second cantilever, the first cantilever being hollow and the second cantilever being insertable inside the first cantilever, and moving along the length of the first cantilever allows the cantilever to extend or retract.

[0013] The beneficial effects of the present invention are as follows:

[0014] In this invention, the relative position adjustment of the fixed seat and the rotating seat is realized by fitting the elastic liner with the fixed liner, and the locking is realized. The assembly can be completed by simply mounting it in the axial direction, and the installation process is simple. [Brief description of the drawings]

[0015] [Figure 1] FIG. 2 is a perspective view of a folding fan. [Diagram 2]FIG. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5] FIG. [Figure 6] FIG. 13 is a perspective view of the fixed seat from another angle. [Figure 7] FIG. [Figure 8] FIG. 2 is a side view of the stationary liner. [Figure 9] FIG. [Figure 10] FIG. 2 is a side view of an elastic liner. [Figure 11] FIG. [Figure 12] FIG. [Figure 13] FIG. 13 is a schematic diagram of a fully folded folding fan. [Figure 14] FIG. 2 is a front view of the folding fan with the cantilever extended. [Figure 15] FIG. 2 is a side view of the folding fan with the cantilever extended. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, specific embodiments of the present application will be described in detail with reference to the drawings. It should be understood that the specific embodiments described in this specification are only used to explain and interpret the present application, and are not used to limit the present application.

[0017] As shown in FIG. 1, 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 21 and two cantilevers 22. A rotation locking structure 4 is attached to each side of the base 1. One end of the cantilever 22 away from the arc frame 21 is pivotally connected to the rotation locking structure 4 so that the bracket 2 can rotate around the base 1. Both sides of the fan body 3 are pivotally connected to the two cantilevers 22 of the bracket 2. The mounting position of the fan body 3 is close to the arc frame 21. The bracket 2 is designed to rotate around the base 1, and the fan body 3 is designed to rotate within the bracket 2, so that the folding fan can be folded. As shown in FIG. 13, when the fan is fully folded, the base 1 and the fan body 3 can both rotate parallel to the extension direction of the cantilevers 22, which makes it easy to store.

[0018] As shown in Figs. 2 to 12, an embodiment of the present invention provides a rotation lock structure 4, including a rotating base 41, a fixed base 42, a fixed liner 43, an elastic liner 44, and a rotating lever 45. The rotating base 41 connects the bracket 2 of the folding fan (specifically, connects one end of the cantilever 22 remote from the arc frame 21). One end of the rotating base 41 is provided with a first receiving tube 411. The fixed base 42 is fixedly mounted inside the base 1. The fixed base 42 is provided with a sleeve 421. One end of the sleeve 421 is fixedly connected to a second receiving tube 4211 coaxial with the sleeve 421. The rotating lever 45 includes a lever body 451 and a lever seat 452 which are fixedly connected to each other. The lever body 451 and the lever seat 452 are both cylindrical, and the lever body 451 and the lever seat 452 are coaxial.

[0019] When installing the rotation lock structure 4, the elastic liner 44 penetrates the lever body 451 and is fixed and installed to the lever seat 452 "so that the lever seat 452 and the elastic liner 44 cannot rotate relative to each other", the fixed liner 43 is fixed and installed inside the second receiving tube 4211 "so that the fixed liner 43 and the second receiving tube 4211 cannot rotate relative to each other", and the lever body 451 penetrates the fixed liner 43 and sleeve 421 and is inserted into the first receiving tube 411 and is fixed to the first receiving tube 411 "at this time, the lever body 451, elastic liner 44, fixed liner 43, sleeve 421, and first receiving tube 411 are coaxial".

[0020] The main improvement of the present invention is that the elastic liner 44 is formed with a plurality of support bridges 442 uniformly distributed around the axis of the elastic liner 44, the support bridges 442 bulge and approach the fixed liner 43, obviously, the support bridges 442 can elastically deform in the axial direction of the elastic liner 44, and the number of support bridges 442 is an even number; "in a preferred embodiment, the elastic liner 44 is formed with four support bridges 442," among which, two support bridges 442 that are symmetrical about their centers are formed with lock-up holders 443 that bulge toward the fixed liner 43, the outer contour of the lock-up holder 443 is arc-shaped, and the fixed liner 43 is provided with two groups of lock-up holes 432 that are symmetrical about the center of the fixed liner 43, and each lock-up hole group 432 includes a plurality of lock-up holes 4321 that are evenly distributed, and the lock-up holes 4321 are fitted with the lock-up holders 443.

[0021] In the mounted state, in the rotation lock structure 4 provided by the present invention, the lock-up holder 443 is fitted into the lock-up hole 4321, so that the elastic liner 44 and the fixed liner 43 cannot rotate relative to each other. However, the support bridge 442 can elastically deform in the axial direction of the elastic liner 44. The outer contour of the lock-up holder 443 is arc-shaped. When an external force is applied to drive the elastic liner 44 and the fixed liner 43 to twist relative to each other, the pressure of the lock-up holder 443 compresses the support bridge 442 in the axial direction of the elastic liner 44, and the lock-up holder 44 3 comes out of the lockup hole 4321 and slides into another lockup hole 4321 in the lockup hole group 432 adjacent to the one that came out, and then when the application of external force is stopped, the relative position between the elastic liner 44 and the fixed liner 43 is newly fixed. In the rotation lock structure 4 of the present invention, by fitting the elastic liner 44 and the fixed liner 43, the relative position between the fixed base 42 and the rotating base 41 can be adjusted and locked by fitting the elastic liner 44 and the fixed liner 43 together. The assembly can be completed by simply installing them in the axial direction, and the installation process is simple.

[0022] Specifically, in order to realize fixation between the fixed liner 43 and the second receiving tube 4211, two first positioning holes 431 are provided in the fixed liner 43 symmetrically about the axis of the fixed liner 43, and first positioning seats 42111 corresponding to the positions and number of the first positioning holes 431 are provided on the inner bottom surface of the second receiving tube 4211 (obviously, the position of the first positioning holes 431 is offset from the lock-up hole group 432).

[0023] Specifically, in order to fix the rotating lever 45 to the first receiving tube 411, an engagement slope 4511 is formed on one end of the lever body 451 away from the lever seat 452, the cross section of the lever body 451 at the engagement slope 4511 is non-circular, and a plurality of fixed teeth 412 are provided around the inside of the first receiving tube 411, and the contour formed by the plurality of fixed teeth 412 matches the cross-sectional contour of the engagement slope 4511 of the lever body 451, so that the lever body 451 is inserted and attached into the first receiving tube 411 and the lever body 451 and first receiving tube 411 cannot rotate relative to each other.

[0024] Furthermore, in order to reinforce the fixed connection between the lever body 451 and the first receiving tube 411, a plurality of first fixing holes 413 are formed through the inner bottom of the first receiving tube 411, and a plurality of second fixing holes 4512 are formed at one end of the lever body 451 away from the lever seat 452. After the lever body 451 is inserted and attached into the first receiving tube 411, a fastener such as a screw is inserted through the first fixing hole 413 and into the second fixing hole 4512 by inserting a bolt, thereby fixing the relative positions of the lever body 451 and the first receiving tube 411.

[0025] Specifically, in order to fix the elastic liner 44 to the lever seat 452, a fixed base 441 bulging toward the lever seat 452 is formed between the two support bridges 442 adjacent to the elastic liner 44, a second positioning hole 4411 is opened in the fixed base 441, and a second positioning seat 4521 corresponding to the position and number of the second positioning hole 4411 is provided in the lever seat 452, and the second positioning seat 4521 is inserted into the second positioning hole 4411 to fix the elastic liner 44 to the lever seat 452.

[0026] Furthermore, in order to keep the relative position of the elastic liner 44 and the lever seat 452 constant when they are repeatedly attached, a third positioning hole 444 is opened in at least one support bridge 442, and a third positioning seat 4522 corresponding to the position and number of the third positioning hole 444 is further provided in the lever seat 452. By fitting the third positioning seat 4522 into the third positioning hole 444, it is possible to keep the relative position of the elastic liner 44 and the lever seat 452 constant when they are repeatedly attached.

[0027] In addition, in consideration of the need to adjust the height of the fan body 3 in different usage scenarios of the folding fan, as shown in FIGS. 13 to 15, in one 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, the first cantilever 221 is hollow, and the second cantilever 222 can be inserted into the first cantilever 221, and the first cantilever 221 moves along the longitudinal direction to realize the telescopic movement of the cantilever 22, thereby adjusting the height of the fan body 3.

[0028] The above-described embodiments only show the embodiments of the present invention, and cannot be understood as limiting the patent scope of the present invention. It should be noted that those skilled in the art can make some modifications and improvements that fall within the scope of protection of the present invention without departing from the concept of the present invention. Therefore, the scope of protection of the present invention should be governed by the appended claims. [Explanation of symbols]

[0029] 1, base, 2, bracket, 22, cantilever, 221, first cantilever, 222, second cantilever, 21, arc frame, 3, fan body, 4, rotation lock structure, 41, rotating seat, 411, first receiving tube, 412, fixed tooth, 413, first fixing hole, 42, fixed seat, 421, sleeve, 4211, second receiving tube, 42111, first positioning seat, 43, fixed liner, 431, first position Determination hole, 432, lock-up hole group, 4321, lock-up hole, 44, elastic liner, 441, fixed base, 4411, second positioning hole, 442, support bridge, 443, lock-up holder, 444, third positioning hole, 45, rotating lever, 451, lever body, 4511, mating slope, 4512, second fixing hole, 452, lever seat, 4521, second positioning seat, 4522, third positioning seat.

Claims

1. A rotation lock structure (4), The device includes a pivot seat (41), a fixed seat (42), a fixed liner (43), an elastic liner (44), and a pivot lever (45). A first receiving cylinder (411) is provided at one end of the rotating seat (41), a sleeve (421) is provided at the fixed seat (42), and a second receiving cylinder (4211) is fixedly connected to one end of the sleeve (421) so as to be coaxial with the sleeve (421); The pivot lever (45) includes a lever body (451) and a lever seat (452) which are fixedly connected to each other, the lever body (451) and the lever seat (452) are both cylindrical, and the lever body (451) and the lever seat (452) are coaxial; When the rotation lock structure (4) is installed, the elastic liner (44) passes through the lever body (451) and is fixed to the lever seat (452), the fixed liner (43) is fixed in the second receiving tube (4211), the lever body (451) passes through the fixed liner (43) and the sleeve (421) and is inserted into the first receiving tube (411) and fixed to the first receiving tube (411); The elastic liner (44) is formed with a plurality of support bridges (442) uniformly distributed around the axis of the elastic liner (44), the support bridges (442) bulge out and approach the fixed liner (43), and the support bridges (442) can be elastically deformed in the axial direction of the elastic liner (44); a lock-up holder (443) that bulges toward a fixed liner (43) is formed on two support bridges (442) that are symmetrical about their centers, the lock-up holder (443) has an arc-shaped outer contour, the fixed liner (43) is provided with two groups of lock-up holes (432) that are symmetrical about their centers around the axis of the fixed liner (43), each of the lock-up hole groups (432) includes a plurality of lock-up holes (4321) that are distributed at equal intervals, and the lock-up holes (4321) engage with the lock-up holder (443).

2. The rotation lock structure described in claim 1, characterized in that the fixed liner (43) is provided with two first positioning holes (431) centrally symmetrically around the axis of the fixed liner (43), and the inner bottom surface of the second receiving tube (4211) is provided with first positioning seats (42111) corresponding to the positions and number of the first positioning holes (431).

3. An engagement inclined surface (4511) is formed at one end of the lever body (451) away from the lever seat (452), and the cross section of the engagement inclined surface (4511) of the lever body (451) is non-circular; The rotation lock structure according to claim 1, characterized in that a plurality of fixed teeth (412) are provided around the inside of the first receiving tube (411), and the contour formed by the surrounding of the plurality of fixed teeth (412) matches the cross-sectional contour of the mating slope (4511) of the lever body (451).

4. The rotation lock structure according to claim 3, characterized in that a plurality of first fixing holes (413) are formed through the inner bottom of the first receiving tube (411), and a plurality of second fixing holes (4512) are formed at one end of the lever body (451) away from the lever seat (452).

5. The rotation lock structure according to claim 1, characterized in that a fixed base (441) is formed between two support bridges (442) adjacent to the elastic liner (44) and bulging toward the lever seat (452), a second positioning hole (4411) is opened in the fixed base (441), and a second positioning seat (4521) corresponding to the position and number of the second positioning hole (4411) is provided in the lever seat (452).

6. The rotation lock structure according to claim 5, characterized in that at least one support bridge (442) is provided with a third positioning hole (444), and the lever seat (452) is further provided with a third positioning seat (4522) corresponding to the position and number of the third positioning hole (444).

7. A folding fan, The fan includes a base (1), a bracket (2), a fan body (3), and the rotation lock structure (4) according to any one of claims 1 to 6, the bracket (2) being assembled into a U-shape from one arc frame (21) and two cantilevers (22); A rotation lock structure (4) is attached to each side of the base (1), the fixed base (42) is fixedly attached to the inside of the base (1), and the rotating base (41) is fixedly connected to one end of the cantilever (22) that is remote from the arc frame (21); The folding fan is characterized in that both sides of the fan body (3) are rotatably connected to two cantilevers (22) of the bracket (2), respectively, and the mounting position of the fan body (3) is adjacent to the arc frame (21).

8. 8. The folding fan of claim 7, wherein the cantilever (22) comprises a first cantilever (221) and a second cantilever (222), the first cantilever (221) being hollow and the second cantilever (222) being insertable into the first cantilever (221), and the cantilever (22) can be extended or retracted by moving along the length of the first cantilever (221).

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