Pitch adjustment structure and fan

Abstract

The present invention discloses a pitch adjustment structure and a fan. The pitch adjustment structure includes a first assembly part, a second assembly part, and an adjustment part. The adjustment part is detachably connected to the first assembly part, the adjustment part is rotatably matched with the first assembly part, the relative rotation angle between the adjustment part and the first assembly part is adjustable, and the adjustment part is installed on the second assembly part. In the above pitch adjustment structure, the adjustment part can adjust the relative rotation angle between the first assembly part and the second assembly part. Compared with the traditional method of directly assembling the first assembly part and the second assembly part, by setting the adjustment part as an intermediate connecting part between the first assembly part and the second assembly part, the adjustment part has a simpler structure than the second assembly part, is easier to operate when assembled with the first assembly part, is more convenient to assemble, is less likely to make mistakes, and can reduce the situation of material loss due to assembly mistakes.

Description

Technical Field

[0001] The present invention relates to the technical field of blowing equipment, and in particular to a pitch adjustment structure and a fan. Background Art

[0002] Fans, used in household appliances for cooling and increasing indoor air circulation, are low-priced and easy to use, and continue to enjoy a significant market share. Currently, the fan's adjustment box is typically secured by installing a spring ball in the lower housing, followed by a stop plate mounted on the adjustment box. The resistance between the spring ball and the stop plate controls the fan's pitch and oscillation. While this method effectively controls the fan's pitch position, it is difficult to assemble, resulting in high costs and labor-intensive assembly. Summary of the Invention

[0003] Based on this, the present invention aims to overcome the problem of difficult assembly of existing fans and provide a pitch adjustment structure and a fan that are easy to assemble.

[0004] The technical solution is as follows:

[0005] A pitch adjustment structure includes a first assembly part, a second assembly part and an adjustment part. The adjustment part is detachably connected to the first assembly part, the adjustment part and the first assembly part are rotatably matched, the relative rotation angle between the adjustment part and the first assembly part is adjustable, and the adjustment part is installed on the second assembly part.

[0006] The above-mentioned pitch adjustment structure can assemble the adjustment part with the first assembly part and the second assembly part respectively, wherein the adjustment part and the first assembly part can be rotatably matched. Since the relative rotation angle between the adjustment part and the first assembly part is adjustable, and the adjustment part and the second assembly part are installed and matched, the adjustment part can also adjust the relative rotation angle between the first assembly part and the second assembly part. Compared with the traditional method of directly assembling the first assembly part and the second assembly part, the above-mentioned pitch adjustment structure provides an adjustment part as an intermediate connecting part connecting the first assembly part and the second assembly part. Compared with the second assembly part, the adjustment part has a simpler structure, is easier to operate when assembled with the first assembly part, is more convenient to assemble, is less likely to make mistakes, and can reduce the loss of materials due to assembly errors.

[0007] In one embodiment, the pitch adjustment structure further includes a first clamping portion and a second clamping portion, wherein one of the first clamping portion and the second clamping portion is provided on the first assembly part, and the other is provided on the adjustment part, and there are multiple second clamping portions, which are sequentially arranged along the rotation direction of the first assembly part or the adjustment part. The first clamping portion is clamped with different second clamping portions, so that the adjustment part and the first assembly part rotate relative to each other.

[0008] In one embodiment, a first limiting groove is provided on one of the first assembly part and the adjustment part, and a first matching portion is provided on the other part. The first limiting groove is arranged along the rotation direction of the first assembly part or the adjustment part, and the first matching portion is slidably matched with the first limiting groove.

[0009] In one embodiment, the first clamping portion is provided on one of the bottom wall of the first limiting groove and the first matching portion, and the second clamping portion is provided on the other one.

[0010] In one embodiment, the end of the first assembly part close to the adjustment part is an operating end, and the operating end includes a first side surface and a second side surface. The first side surface and the second side surface are respectively located on both sides of the operating end, and the first side surface is provided with the first clamping portion or the second clamping portion.

[0011] In one embodiment, the first limiting groove is provided on the first side surface, an inner groove is provided on the first side surface, the adjustment member includes a transition portion and the first matching portion, the transition portion is installed in the inner groove, and the transition portion and the first assembly member can be rotatably matched.

[0012] In one embodiment, a second limiting groove is provided on one of the first assembly part and the adjustment part, and a second matching portion is provided on the other part. The second limiting groove is arranged along the rotation direction of the first assembly part or the adjustment part, and the second matching portion is slidably matched with the second limiting groove.

[0013] In one embodiment, the angle of rotation of the first matching portion along the first limiting groove is less than 180°, and when the first matching portion moves to one end of the first limiting groove, the first clamping portion is clamped with one of the second clamping portions, and when the first matching portion moves to the other end of the first limiting groove, the first clamping portion is clamped with the other second clamping portion.

[0014] In one embodiment, the first clamping part is a clamping part provided on the first assembly part, the second clamping part is a clamping slot provided on the adjustment part, the clamping part is movably provided on the first assembly part, and the clamping part has a first moving position and a second moving position. When the clamping part is located at the first moving position, the clamping part is clamped with the clamping slot, and when the clamping part moves to the second moving position, the clamping part is located outside the clamping slot.

[0015] In one embodiment, a mounting groove is provided on the first assembly part, an elastic member is provided in the mounting groove, the clamping member is at least partially located in the mounting groove, the elastic member is provided between the clamping member and the bottom wall of the mounting groove, and the elastic member is used to move the clamping member to the first moving position.

[0016] In one embodiment, one end of the clamping member for clamping with the clamping slot is a curved surface structure or a spherical structure.

[0017] In one embodiment, the second assembly member is detachably connected to the adjustment member.

[0018] In one embodiment, the pitch adjustment structure further includes a rotating shaft, and the second assembly part is provided with a first bearing part and a second bearing part, the first bearing part and the second bearing part are spaced apart, and the rotating shaft passes through the first bearing part, the adjustment part, the first assembly part and the second bearing part in sequence.

[0019] In one embodiment, a guide groove is provided on the first bearing portion and / or the second bearing portion, and a protrusion that slides in cooperation with the guide groove is provided on the adjusting member.

[0020] A fan comprises the pitch adjustment structure as described in any one of the above items.

[0021] The above-mentioned fan can assemble the adjustment part with the first assembly part and the second assembly part respectively, wherein the adjustment part and the first assembly part can be rotatably matched. Since the relative rotation angle between the adjustment part and the first assembly part is adjustable, and the adjustment part and the second assembly part are installed and matched, the adjustment part can also adjust the relative rotation angle between the first assembly part and the second assembly part. Compared with the traditional method of directly assembling the first assembly part and the second assembly part, the above-mentioned pitch adjustment structure provides an adjustment part as an intermediate connecting part connecting the first assembly part and the second assembly part. Compared with the second assembly part, the adjustment part has a simpler structure, is easier to operate when assembled with the first assembly part, is more convenient to assemble, is less likely to make mistakes, and can reduce material loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 Schematic diagram of an explosion of the pitch adjustment structure according to an embodiment of the present invention Figure 1 ;

[0025] Figure 2 Schematic diagram of the assembly of the adjusting member, the first clamping portion and the elastic member according to an embodiment of the present invention;

[0026] Figure 3 Schematic diagram of an explosion of the pitch adjustment structure according to an embodiment of the present invention Figure 2 .

[0027] Description of reference numerals:

[0028] 100. First assembly part, 101. Mounting groove, 102. First through-hole, 110. Operating end, 111. First side, 112. Second side, 113. Inner groove, 200. Second assembly part, 201. Guide groove, 202. Third through-hole, 203. Fourth through-hole, 210. First bearing part, 220. Second bearing part, 300. Adjusting part, 301. Second through-hole, 310. Adapter part, 320. Protruding part, 321. First sub-part, 322. Second sub-part, 410. First clamping part, 420. Second clamping part, 430. Elastic part, 510. First limiting groove, 520. First matching part, 530. Second limiting groove, 540. Second matching part, 550. Third limiting groove, 560. Third matching part, 600. Rotating shaft part. DETAILED DESCRIPTION

[0029] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] like Figure 1 and Figure 2 As shown, one embodiment discloses a pitch adjustment structure, including a first assembly part 100, a second assembly part 200 and an adjustment part 300, the adjustment part 300 is detachably connected to the first assembly part 100, the adjustment part 300 and the first assembly part 100 are rotatably matched, the relative rotation angle between the adjustment part 300 and the first assembly part 100 is adjustable, and the adjustment part 300 is installed on the second assembly part 200.

[0031] The above-mentioned pitch adjustment structure can assemble the adjustment part 300 with the first assembly part 100 and the second assembly part 200 respectively, wherein the adjustment part 300 and the first assembly part 100 can be rotatably matched. Since the relative rotation angle of the adjustment part 300 and the first assembly part 100 is adjustable, and the adjustment part 300 is installed and matched with the second assembly part 200, the adjustment part 300 can also adjust the relative rotation angle of the first assembly part 100 and the second assembly part 200. Compared with the traditional method of directly assembling the first assembly part 100 and the second assembly part 200, the above-mentioned pitch adjustment structure is simple in structure by setting the adjustment part 300 as the intermediate connecting part connecting the first assembly part 100 and the second assembly part 200. It is easier to operate when assembling with the first assembly part 100, more convenient to assemble, less prone to errors, and can reduce the situation of material loss caused by assembly errors.

[0032] Optionally, the pitch adjustment structure is used in a fan, with the first assembly 100 or the second assembly 200 being connected to the head. The relative rotation angle of the first assembly 100 relative to the adjustment member 300 is adjustable, ultimately for adjusting the rotation angle of the first assembly 100 relative to the second assembly 200. When the first assembly 100 or the second assembly 200 is connected to the head, the pitch angle of the head can be adjusted by rotating the first assembly 100 relative to the second assembly 200.

[0033] In one embodiment, Figures 1 to 3 As shown, the pitch adjustment structure further includes a first clamping portion 410 and a second clamping portion 420. One of the first clamping portion 410 and the second clamping portion 420 is provided on the first assembly part 100, and the other is provided on the adjustment member 300. There are multiple second clamping portions 420, and the second clamping portions 420 are sequentially arranged along the rotation direction of the first assembly part 100 or the adjustment member 300. The first clamping portion 410 is engaged with different second clamping portions 420 to enable the adjustment member 300 to rotate relative to the first assembly part 100. The engagement between the first clamping portion 410 and the second clamping portion 420 can fix the relative position of the first assembly part 100 and the adjustment member 300, and the engagement between the first clamping portion 410 and different second clamping portions 420 can adjust the relative rotation angle of the first assembly part 100 and the adjustment member 300, thereby adjusting the relative rotation angle of the first assembly part 100 and the second assembly part 200.

[0034] In other embodiments, the relative rotation angle between the adjusting member 300 and the first assembly member 100 may also be adjusted by a stepping motor or the like.

[0035] In one embodiment, Figures 1 to 3As shown, one of the first assembly part 100 and the adjusting part 300 is provided with a first limiting groove 510, and the other is provided with a first matching portion 520. The first limiting groove 510 is arranged along the rotation direction of the first assembly part 100 or the adjusting part 300, and the first matching portion 520 is slidably engaged with the first limiting groove 510. Through the engagement of the first matching portion 520 with the first limiting groove 510, the first limiting groove 510 limits the sliding movement of the first matching portion 520, thereby limiting the relative rotation angle range between the first assembly part 100 and the adjusting part 300, thereby preventing the relative rotation angle between the first assembly part 100 and the adjusting part 300 from being too large.

[0036] Optionally, the first matching portion 520 can rotate along the first limiting groove 510 within an angle smaller than 360°.

[0037] In one embodiment, Figures 1 to 3 As shown, one of the bottom wall of the first limiting groove 510 and the first matching portion 520 is provided with the first clamping portion 410, and the other is provided with the second clamping portion 420. At this time, the cooperation between the first matching portion 520 and the first limiting groove 510 can provide guidance for the installation and alignment of the first clamping portion 410 and the second clamping portion 420, making the installation and cooperation of the adjustment member 300 and the first assembly member 100 simpler. At this time, the cooperation between the first clamping portion 410 and the second clamping portion 420 is located in the first limiting groove 510. The mutual limiting effect of the first matching portion 520 and the first limiting groove 510 can also play a role in the cooperation between the first clamping portion 410 and the second clamping portion 420, preventing the first clamping portion 410 and the second clamping portion 420 from being misaligned and unable to be engaged, thereby ensuring the effective cooperation between the first clamping portion 410 and the second clamping portion 420.

[0038] At this time, when the first clamping portion 410 is arranged on the bottom wall of the first limiting groove 510, the first clamping portion 410 is arranged on the first matching piece. Similarly, when the second clamping portion 420 is arranged on the bottom wall of the first limiting groove 510, the second clamping portion 420 is arranged on the first matching piece.

[0039] In other embodiments, the first clamping portion 410 and the second clamping portion 420 , the first limiting groove 510 and the first matching portion 520 may also be arranged separately, that is, the first clamping portion 410 and the second clamping portion 420 are spaced apart from the first limiting groove 510 and the first matching portion 520 .

[0040] In one embodiment, Figures 1 to 3As shown, the end of the first assembly member 100 closest to the adjustment member 300 is the operating end 110. The operating end 110 includes a first side surface 111 and a second side surface 112. The first side surface 111 and the second side surface 112 are located on either side of the operating end 110, respectively. The first side surface 111 is provided with a first clamping portion 410 or a second clamping portion 420. Since the side surface of the operating end 110 is easier to observe, assembly is easier and less likely to result in assembly errors, thereby improving installation efficiency and reducing material loss.

[0041] In one embodiment, Figures 1 to 3 As shown, the first limiting groove 510 is provided on the first side surface 111, and the first side surface 111 is provided with an inner groove 113. The adjusting member 300 includes a transition portion 310 and a first matching portion 520. The transition portion 310 is installed at the inner groove 113, and the transition portion 310 and the first assembly member 100 are rotatably matched. At this time, the adjusting member 300 is actually assembled with the first side surface 111 of the operating end 110, realizing the assembly of the first assembly member 100 and the adjusting member 300. The assembly of the inner groove 113 and the transition portion 310, and the assembly of the first matching portion 520 and the first limiting groove 510 can cooperate to play a role of mutual guidance, making assembly simpler and less prone to errors. In addition, the structure of the adjusting member 300 does not have any bending or curvature, and its ability to withstand force is better. The adjusting member 300 is more durable and less prone to damage.

[0042] In other embodiments, the first limiting groove 510 may also be provided on the end surface of the operating end 110 , and the adapter portion 310 and the first matching portion 520 are provided at an angle so that the first matching portion 520 and the first limiting groove 510 are slidably matched.

[0043] In other embodiments, the first limiting groove 510 may also be provided on the adjusting member 300 , and the first matching portion 520 may be provided on the first assembly member 100 .

[0044] In one embodiment, Figures 1 to 3 As shown, one of the first assembly member 100 and the adjusting member 300 is provided with a second limiting groove 530, and the other is provided with a second matching portion 540. The second limiting groove 530 is arranged along the rotation direction of the first assembly member 100 or the adjusting member 300, and the second matching portion 540 is slidably engaged with the second limiting groove 530. The second limiting groove 530 and the second limiting portion can limit each other to limit the relative rotation angle range of the first assembly member 100 and the adjusting member 300, and cooperate with the first limiting groove 510 and the first limiting portion to guide the relative rotation of the first assembly member 100 and the adjusting member 300.

[0045] Optionally, the first limiting groove 510 and the second limiting groove 530 are simultaneously arranged on the first assembly part 100; or the first limiting groove 510 and the second limiting groove 530 are simultaneously arranged on the first adjustment part 300; or the first limiting groove 510 is arranged on the first assembly part 100, and the second limiting groove 530 is arranged on the adjustment part 300; or the second limiting groove 530 is arranged on the first assembly part 100, and the first limiting groove 510 is arranged on the adjustment part 300.

[0046] Alternatively, as Figures 1 to 3 As shown, one of the first assembly member 100 and the adjusting member 300 is provided with a third limiting groove 550, and the other is provided with a third matching portion 560. The third limiting groove 550 is arranged along the rotation direction of the first assembly member 100 or the adjusting member 300, and the third matching portion 560 is slidably engaged with the third limiting groove 550. In this case, other limiting grooves and matching portions may also be provided to cooperate with each other to limit the range of the relative rotation angle of the first assembly member 100 and the adjusting member 300, and to jointly guide the relative rotation of the first assembly member 100 and the adjusting member 300.

[0047] Alternatively, as Figure 1 As shown, the second limiting groove 530 and the third limiting groove 550 are both provided on the bottom wall of the inner groove 113. At this time, when the adapter portion 310 is installed into the inner groove 113, the second matching portion 540 and the third matching portion 560 can also be aligned and installed, simplifying the installation and matching process.

[0048] In one embodiment, Figures 1 to 3 As shown, the angle of rotation of the first engaging portion 520 along the first limiting groove 510 is less than 180°. When the first engaging portion 520 moves to one end of the first limiting groove 510, the first clamping portion 410 is clamped with one of the second clamping portions 420. When the first engaging portion 520 moves to the other end of the first limiting groove 510, the first clamping portion 410 is clamped with the other second clamping portion 420. At this time, when the first engaging portion 520 moves to the two ends of the first limiting groove 510, the first clamping portion 410 is guaranteed to be able to clamp with different second clamping portions 420. The first clamping portion 410 and the second clamping portion 420 will not be disconnected, resulting in relative rotation of the first assembly part 100 and the adjustment part 300. This facilitates adjustment of the relative rotation angle of the first assembly part 100 and the adjustment part 300.

[0049] Alternatively, as Figure 2 As shown, there are three second clamping portions 420 , and the relative rotation angle between the first assembly member 100 and the adjustment member 300 is adjustable in three levels.

[0050] In other embodiments, the number of the second locking portions 420 may also be two or more than three.

[0051] In one embodiment, Figure 1 and Figure 2 As shown, the first engaging portion 410 is a engaging member provided on the first assembly part 100, and the second engaging portion 420 is a slot provided on the adjustment member 300. The engaging member is movably provided on the first assembly part 100, and has a first movable position and a second movable position. When the engaging member is in the first movable position, the engaging member is engaged with the slot, and when the engaging member moves to the second movable position, the engaging member is located outside the slot. By moving the adjustment member 300 between the first movable position and the second movable position, the engaging member can be engaged with the slot or disengaged from the slot, and then by engaging the engaging member with different slots, the rotation angle of the first assembly part 100 relative to the adjustment member 300 can be adjusted.

[0052] In other embodiments, the latching slot may also be provided on the first assembly member 100 , and the latching member may also be provided on the adjusting member 300 .

[0053] In one embodiment, Figure 1 and Figure 2 As shown, the first assembly part 100 is provided with a mounting groove 101, and an elastic member 430 is provided in the mounting groove 101. The clipping member is at least partially located in the mounting groove 101. The elastic member 430 is provided between the clipping member and the bottom wall of the mounting groove 101. The elastic member 430 is used to move the clipping member to a first moving position. At this time, the clipping member is provided on the first assembly part 100. When the first assembly part 100 needs to be rotated, the clipping member is subjected to pressure, causing the clipping member to move along the mounting groove 101 and disengage from the slot. At this time, the elastic member 430 is under pressure. When the first assembly part 100 is rotated to a position corresponding to another slot, the elastic member 430 has a tendency to recover and push the clipping member toward the slot, so that the clipping member is re-engaged with the slot. At the same time, when the first assembly part 100 and the second assembly part 200 are large in size or heavy in weight, for example, one of the first assembly part 100 and the second assembly part 200 is a fan bracket and the other is a control box, and the adjustment part 300 is small in size and weight, the assembly of the first assembly part 100 and the adjustment part 300 is easier to control and the assembly operation is simpler than the direct assembly of the first assembly part 100 and the second assembly part 200. It is less likely to make assembly errors, thereby reducing the material loss of the elastic part 430 or the clip part due to assembly errors.

[0054] Optionally, the elastic member 430 may be a spring.

[0055] In other embodiments, the clamping part may also be a push rod motor, etc., which can realize rotational adjustment of the first assembly part 100 relative to the adjustment part 300 by extending into or out of the clamping slot; or the clamping part is passed through the first assembly part 100 and is threadedly engaged with the first assembly part 100, and the clamping part can be moved relative to the first assembly part 100 by rotating the clamping part, and the clamping part can also be extended into or out of the clamping slot; or the clamping part is passed through the first adapter part and is slidably engaged with the first assembly part 100, and the clamping part can be extended into or out of the clamping slot by pushing or pulling out the clamping part.

[0056] In one embodiment, Figure 2 As shown, the end of the clamping member that is used to engage with the slot has a curved or spherical surface structure. In this case, the clamping member can better convert the lateral pressure it receives into a force component that moves along the mounting slot 101, making it easier for the clamping member to disengage from the slot when the first assembly member 100 rotates relative to the adjustment member 300, thereby preventing the clamping member from getting stuck.

[0057] In one embodiment, Figure 1 and Figure 3 As shown, the second assembly part 200 is detachably connected to the adjustment part 300. After the adjustment part 300 and the first assembly part 100 are installed, the second assembly part 200 can be assembled with the adjustment part 300. At the same time, when disassembling, the second assembly part 200 can be detached from the adjustment part 300 first, which reduces the weight of one side of the adjustment part 300 and facilitates the disassembly and assembly of the adjustment part 300 and the first assembly part 100.

[0058] In one embodiment, Figure 1 and Figure 3 As shown, the pitch adjustment structure further includes a rotating shaft 600. The second assembly member 200 is provided with a first supporting portion 210 and a second supporting portion 220, which are spaced apart from each other. The rotating shaft 600 sequentially passes through the first supporting portion 210, the adjustment member 300, the first assembly member 100, and the second supporting portion 220. In this case, the first supporting portion 210 and the second supporting portion 220 are primarily used to support the first assembly member 100, while the adjustment member 300 primarily cooperates with the clamping member and the first assembly member 100. As a result, the adjustment member 300 is subjected to less force and is less susceptible to damage.

[0059] Optionally, the adjusting member 300 is a plastic member, which is light in weight and easy to assemble.

[0060] In one embodiment, Figure 1 and Figure 3As shown, the first bearing portion 210 and / or the second bearing portion 220 are provided with a guide groove 201, and the adjusting member 300 is provided with a protrusion 320 that slidably cooperates with the guide groove 201. The cooperation between the guide groove 201 and the protrusion 320 facilitates the installation of the adjusting member 300 and the second assembly member 200. At the same time, the protrusion 320 and the guide groove 201 also have a mutual limiting function, preventing the adjusting member 300 and the second assembly member 200 from relative displacement.

[0061] In other embodiments, the guide groove 201 may be provided on the adjusting member 300 , and the first bearing portion 210 and / or the second bearing portion 220 220 may be provided with a protrusion 320 . The above technical effects may also be achieved.

[0062] Alternatively, as Figure 1 and Figure 3 As shown, the guide groove 201 is arranged in the direction from the second assembly part 200 to the first assembly part 100. The end of the guide groove 201 away from the first assembly part 100 is the fixed end. The distance between the two opposite side walls in the fixed end gradually increases as it approaches the first assembly part 100. The portion of the protrusion 320 is a trapezoidal structure that matches the fixed end. As the protrusion 320 slides along the guide groove 201 until the protrusion 320 extends into the fixed end, the guide groove 201 fits the protrusion 320 tighter and tighter until the protrusion 320 can no longer move. At this time, the shape of the protrusion 320 prevents the positioning member from rotating or translating relative to the second assembly part 200, so that the rotation angle of the first assembly part 100 relative to the positioning member is adjusted, which is equivalent to adjusting the angle of the first assembly part 100 relative to the second assembly part 200.

[0063] Optionally, the rotating shaft 600 is a bolt, and the pitch adjustment structure further includes a nut matching the bolt, and the nut cooperates with the thread of the bolt to prevent the rotating shaft 600 from detaching.

[0064] Alternatively, as Figure 1 As shown, a first through-hole 102 is provided on the first assembly part 100, and the rotating shaft part 600 is provided with the first through-hole 102. The first through-hole 102 is provided on the inner groove 113. The inner groove 113 is a circular groove. The second limiting groove 530 and the third limiting groove 550 are provided on both sides of the first through-hole 102. The first limiting groove 510 is connected to the inner groove 113, and the first limiting groove 510 is located on the side of the inner groove 113 close to the second assembly part 200.

[0065] Alternatively, as Figure 1 and Figure 3As shown, a second through-hole 301 is provided on the adjusting member 300, the rotating shaft member 600 is passed through the second through-hole 301, and the protrusion 320 includes a first section 321 and a second section 322. The first section 321 and the second section 322 are respectively located on both sides of the second through-hole 301. The first section 321 and the second section 322 can also improve the structural strength of the adjusting member 300.

[0066] Alternatively, as Figure 1 and Figure 3 As shown, the first supporting portion 210 is provided with a third through hole 202 for the rotating shaft 600 to pass through, and the second supporting portion 220 is provided with a fourth through hole 203 for the rotating shaft 600 to pass through.

[0067] One embodiment discloses a fan, comprising any of the above-mentioned pitch adjustment structures.

[0068] The above-mentioned fan can assemble the adjustment part 300 with the first assembly part 100 and the second assembly part 200 respectively, wherein the adjustment part 300 and the first assembly part 100 can be rotatably matched. Since the relative rotation angle between the adjustment part 300 and the first assembly part 100 is adjustable, and the adjustment part 300 is installed and matched with the second assembly part 200, the adjustment part 300 can also adjust the relative rotation angle between the first assembly part 100 and the second assembly part 200. Compared with the traditional direct assembly of the first assembly part 100 and the second assembly part 200, the above-mentioned pitch adjustment structure is simpler in structure than the second assembly part 200 by setting the adjustment part 300 as the intermediate connecting part connecting the first assembly part 100 and the second assembly part 200. It is easier to operate when assembling with the first assembly part 100, more convenient to assemble, less prone to errors, and can reduce material loss.

[0069] Optionally, the fan includes a head, and the first assembly part 100 or the second assembly part 200 is connected to the head, so as to realize adjustment of the rotation angle of the head.

[0070] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

[0072] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0073] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0074] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0075] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0076] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

Claims

1. A pitch adjustment structure, characterized in that: The first assembly part comprises a first assembly part, a second assembly part and an adjusting part, wherein the adjusting part is detachably connected to the first assembly part, the adjusting part is rotatably matched with the first assembly part, the relative rotation angle between the adjusting part and the first assembly part is adjustable, and the adjusting part is mounted on the second assembly part; A first limiting groove is provided on one of the first assembly member and the adjusting member, and a first matching portion is provided on the other member. The first limiting groove is provided along the rotation direction of the first assembly member or the adjusting member, and the first matching portion is slidably matched with the first limiting groove. A first clamping portion is provided on one of the bottom wall of the first limiting groove and the first matching portion, and a second clamping portion is provided on the other one.

2. The pitch adjustment structure according to claim 1, characterized in that: One of the first clamping portion and the second clamping portion is provided on the first assembly part, and the other is provided on the adjusting part. There are multiple second clamping portions, and the second clamping portions are arranged in sequence along the rotation direction of the first assembly part or the adjusting part. The first clamping portion is clamped with different second clamping portions, so that the adjusting part and the first assembly part rotate relative to each other.

3. The pitch adjustment structure according to claim 1, characterized in that: The end of the first assembly part close to the adjustment part is an operating end, and the operating end includes a first side surface and a second side surface. The first side surface and the second side surface are respectively located on both sides of the operating end, and the first side surface is provided with the first clamping portion or the second clamping portion.

4. The pitch adjustment structure according to claim 3, characterized in that: The first limiting groove is provided on the first side surface, an inner groove is provided on the first side surface, the adjusting member includes a transition portion and the first matching portion, the transition portion is installed at the inner groove, and the transition portion and the first assembly member can be rotatably matched.

5. The pitch adjustment structure according to claim 1, characterized in that: A second limiting groove is provided on one of the first assembly part and the adjustment part, and a second matching portion is provided on the other. The second limiting groove is arranged along the rotation direction of the first assembly part or the adjustment part, and the second matching portion is slidably matched with the second limiting groove.

6. The pitch adjustment structure according to claim 1, characterized in that: The angle of rotation of the first matching portion along the first limiting groove is less than 180°. When the first matching portion moves to one end of the first limiting groove, the first clamping portion is clamped with one of the second clamping portions. When the first matching portion moves to the other end of the first limiting groove, the first clamping portion is clamped with the other second clamping portion.

7. The pitch adjustment structure according to any one of claims 2 to 6, characterized in that: The first clamping part is a clamping part provided on the first assembly part, and the second clamping part is a clamping slot provided on the adjustment part. The clamping part is movably provided on the first assembly part, and the clamping part has a first moving position and a second moving position. When the clamping part is located at the first moving position, the clamping part is clamped with the clamping slot. When the clamping part moves to the second moving position, the clamping part is located outside the clamping slot.

8. The pitch adjustment structure according to claim 7, characterized in that: The first assembly part is provided with a mounting groove, an elastic part is provided in the mounting groove, the clamping part is at least partially located in the mounting groove, the elastic part is provided between the clamping part and the bottom wall of the mounting groove, and the elastic part is used to move the clamping part to the first moving position.

9. The pitch adjustment structure according to claim 8, characterized in that: One end of the clamping member for clamping with the clamping slot has an arc surface structure or a spherical structure.

10. The pitch adjustment structure according to any one of claims 1 to 6, characterized in that: The second assembly part is detachably connected to the adjustment part.

11. The pitch adjustment structure according to claim 10, characterized in that: It also includes a rotating shaft component, and the second assembly component is provided with a first bearing part and a second bearing part, the first bearing part and the second bearing part are arranged at intervals, and the rotating shaft component passes through the first bearing part, the adjustment component, the first assembly component and the second bearing part in sequence.

12. The pitch adjustment structure according to claim 11, characterized in that: A guide groove is provided on the first bearing portion and / or the second bearing portion, and a protrusion that is slidably matched with the guide groove is provided on the adjusting member.

13. A fan, characterized in that: The invention comprises a pitch adjustment structure according to any one of claims 1 to 12.

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