Angle adjustment structure and blowing device

Abstract

The present invention discloses an angle adjustment structure and a blowing device, wherein the angle adjustment structure comprises a first matching piece and a second matching piece, wherein the first matching piece and the second matching piece are rotatably connected, wherein the relative rotation angle between the first matching piece and the second matching piece is adjustable, wherein one of the first matching piece and the second matching piece is used for detachable connection with a machine head, and the other is used for detachable connection with a bracket. In the above-mentioned angle adjustment structure, after the first matching piece and the second matching piece are assembled with the machine head and the bracket, they can be used to adjust the angle of the machine head relative to the bracket, and the assembly of the first matching piece and the second matching piece can be operated without the machine head and the bracket, and the assembly environment is simpler. Compared with the method in which the angle adjustment elements in the traditional equipment are respectively directly mounted on the machine head and the bracket, and then the machine head and the bracket are assembled, it is only necessary to assemble the first matching piece and the second matching piece with the machine head and the bracket respectively, and the assembly method is simpler, the assembly efficiency is improved, and maintenance and replacement are convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of blowing devices, and in particular to an angle adjustment structure and a blowing device. Background Art

[0002] With the continuous development of science and technology, the types of equipment used for cooling are increasing. However, fans are used as appliances for cooling and increasing indoor air circulation in household appliances. They are low-priced and easy to use, and are still in great demand. Some fans use a head shaking adjustment structure with a ball-bump spring, and most use a limiter and a ball-bump spring to adjust the head shaking. Since the spring and ball parts are very small and the machine head is heavy, the spring ball is not easy to install, the assembly efficiency is low, and if a fault occurs, the maintenance and replacement are complicated. Summary of the invention

[0003] Based on this, the present invention aims to overcome the defects of the existing shaking adjustment structure of the fan that is difficult to assemble, repaired and replaced, and provide an angle adjustment structure and a blowing device that are easy to assemble, repaired and replaced.

[0004] The technical solution is as follows:

[0005] An angle adjustment structure includes a first mating piece and a second mating piece, wherein the first mating piece and the second mating piece are rotatably connected, and the relative rotation angle between the first mating piece and the second mating piece is adjustable. One of the first mating piece and the second mating piece is used for detachable connection with a machine head, and the other is used for detachable connection with a bracket.

[0006] The above-mentioned angle adjustment structure, since one of the first matching piece and the second matching piece is detachably connected to the machine head, and the other is detachably connected to the bracket, and the relative rotation angle of the first matching piece and the second matching piece is adjustable, the first matching piece, the second matching piece, after being assembled with the machine head and the bracket, can be used to adjust the angle of the machine head relative to the bracket, and the assembly of the first matching piece and the second matching piece can be operated separately from the machine head and the bracket, and the assembly environment is simpler. Compared with the traditional equipment in which the angle adjustment elements are directly installed on the machine head and the bracket, and then the machine head and the bracket are assembled, the above-mentioned angle adjustment structure only needs to assemble the first matching piece, the second matching piece with the machine head and the bracket separately, and the assembly method is simpler, which improves the assembly efficiency and is convenient for maintenance and replacement when a fault occurs.

[0007] In one embodiment, a first rotating connection hole is provided on the first mating piece, the second mating piece passes through the first rotating connection hole, a plurality of first clamping grooves are circumferentially provided on the outer wall of the second mating piece, a first clamping piece is provided on the inner wall of the first rotating connection hole, the first clamping piece has a first moving position and a second moving position relative to the first mating piece, the first clamping piece can reciprocate between the first moving position and the second moving position, when the first clamping piece is located at the first moving position, the first clamping piece is clamped with the first clamping groove, when the first clamping piece is located at the second moving position, the first clamping piece is disengaged from the first clamping groove.

[0008] In one embodiment, the angle adjustment structure further includes an elastic member, an assembly groove is provided on the inner wall of the first rotating connecting hole, the elastic member is arranged in the assembly groove, one end of the elastic member is connected to the first clamping member, and the other end of the elastic member is in contact with or connected to the inner wall of the assembly groove, and the elastic member is used to move the first clamping member to the first moving position.

[0009] In one embodiment, the first clamping member includes a connecting end and a contact end, the maximum outer diameter of the contact end is larger than the maximum outer diameter of the connecting end, one end of the elastic member is sleeved outside the connecting end and abuts against the contact end, and the contact end is clamped in cooperation with the first clamping slot.

[0010] In one embodiment, the end surface of the contact end is a partial spherical surface.

[0011] In one embodiment, the groove wall of the first groove is an arc surface or a spherical surface, and the radius of the arc surface or the radius of the spherical surface of the groove wall of the first groove is smaller than the radius of the end surface of the contact end.

[0012] In one embodiment, the first rotating connecting hole includes a first hole section and a second hole section arranged in sequence along a direction away from the machine head, the aperture of the first hole section is larger than the aperture of the second hole section, the second matching piece includes a docking end and a gear end, the docking end passes through the second hole section, the outer diameter of the gear end is larger than the aperture of the second hole section, the first matching piece is provided with an end of the first hole section which is detachably connected to the machine head, and the docking end is connected to the bracket.

[0013] In one embodiment, the first clamping groove is provided on the shift end, and the first clamping groove extends along the axial direction of the second matching piece to both side surfaces of the shift end.

[0014] In one embodiment, a second rotating connecting hole is provided on the first mating piece, the second mating piece passes through the second rotating connecting hole, a plurality of second clamping grooves are circumferentially provided on the hole wall of the second rotating connecting hole, a second clamping piece is provided on the outer wall of the second mating piece, the second clamping piece has a third moving position and a fourth moving position relative to the second mating piece, the second clamping piece can reciprocate between the third moving position and the fourth moving position, when the second clamping piece is located at the third moving position, the second clamping piece is clamped with the second clamping groove, when the second clamping piece is located at the fourth moving position, the second clamping piece is disengaged from the second clamping groove.

[0015] A blowing device comprises a head, a bracket and an angle adjustment structure as described in any one of the above items, wherein one of the first matching piece and the second matching piece is detachably connected to the head, and the other is detachably connected to the bracket.

[0016] The above-mentioned blowing device, since one of the first matching piece and the second matching piece is detachably connected to the machine head, and the other is detachably connected to the bracket, and the relative rotation angle of the first matching piece and the second matching piece is adjustable, the first matching piece, the second matching piece, after being assembled with the machine head and the bracket, can be used to adjust the angle of the machine head relative to the bracket, and the assembly of the first matching piece and the second matching piece can be operated separately from the machine head and the bracket, and the assembly environment is simpler. Compared with the traditional equipment in which the angle adjustment elements are directly installed on the machine head and the bracket, and then the machine head and the bracket are assembled, the above-mentioned blowing device only needs to assemble the first matching piece, the second matching piece with the machine head and the bracket separately, and the assembly method is simpler, which improves the assembly efficiency and is convenient for maintenance and replacement when a fault occurs.

[0017] In one embodiment, the bracket includes a first split body and a second split body that are spaced apart, and a first mounting portion and a second mounting portion are respectively provided on both sides of the head, the first mounting portion is detachably connected to the first mating piece, the first split body is detachably connected to the second mating piece, and the second split body is rotatably connected to the second mounting portion.

[0018] In one of the embodiments, a supporting hole is provided on the first split body, and one end of the second matching piece extends into the supporting hole and is detachably connected to the first split body.

[0019] In one embodiment, a corner limiting portion is provided on a side of the first mating part close to the first split body, and an angle limiting groove is provided on a side of the first split body close to the machine head. The angle limiting groove is arranged around the support hole, and the corner limiting portion is used to extend into the angle limiting groove and slide along the angle limiting groove. The angle at which the corner limiting portion can rotate along the angle limiting groove is less than 360°.

[0020] In one of the embodiments, a guide groove is provided on the inner wall of the support hole, and a protrusion matching the guide groove is provided on the second matching piece.

[0021] In one embodiment, there are two first fitting parts and two second fitting parts, one of the first fitting parts and one of the second fitting parts are arranged between the second split body and the second mounting portion, the second split body and the second fitting part are detachably connected, and the second mounting portion and the first fitting part are detachably connected.

[0022] In one embodiment, the above-mentioned blowing device also includes a first fixing member and a second fixing member, the first matching member is provided with a first through hole, the first mounting portion is provided with a first threaded hole, the first fixing member passes through the first through hole and is threadedly matched with the first threaded hole, the first split body is provided with a second through hole, the second matching member is provided with a second threaded hole, the second fixing member passes through the second through hole and is threadedly matched with the second threaded hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] 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.

[0025] Figure 1 It is a partial structural schematic diagram of the blowing device according to an embodiment of the present invention;

[0026] Figure 2 for Figure 1 Explosion diagram of

[0027] Figure 3 It is an oblique view of the first matching piece according to an embodiment of the present invention;

[0028] Figure 4 is an oblique view of the second matching member according to an embodiment of the present invention;

[0029] Figure 5 A longitudinal cross-sectional view of the angle adjustment structure according to an embodiment of the present invention;

[0030] Figure 6 A cross-sectional view of the angle adjustment structure according to an embodiment of the present invention;

[0031] Figure 7 It is an oblique view of the first clamping member according to the embodiment of the present invention;

[0032] Figure 8 is a cross-sectional view of a first matching member according to an embodiment of the present invention;

[0033] Fig. 9 It is a partial structural schematic diagram of the head according to an embodiment of the present invention;

[0034] Fig.10 A schematic diagram of a partial structure of a bracket according to an embodiment of the present invention;

[0035] Fig.11 It is an oblique view of the angle adjustment structure according to an embodiment of the present invention;

[0036] Fig.12 for Fig.10 The enlarged schematic diagram of point A in the middle;

[0037] Fig.13 It is a partial structural schematic diagram of the first split body according to an embodiment of the present invention;

[0038] Fig.14 It is a side view of the first matching piece described in the embodiment of the present invention.

[0039] Description of reference numerals:

[0040] 100, first matching piece, 101, first rotating connecting hole, 101a, first hole section, 101b, second hole section, 102, assembly groove, 103, first through hole, 110, first clamping piece, 111, connecting end, 112, contact end, 120, elastic piece, 130, corner limiting portion, 200, second matching piece, 201, first clamping groove, 202, second threaded hole, 210, docking end, 220, gear end, 230, protrusion, 240, extension portion, 300, head, 310, first mounting portion, 311, first threaded hole, 320, air cylinder piece, 321, air duct, 400, bracket, 410, first split body, 411, support hole, 412, angle limiting groove, 413, guide groove, 414, second through hole, 420, second split body. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0042] like Figure 1 and Figure 2 As shown, one embodiment discloses an angle adjustment structure, including a first mating piece 100 and a second mating piece 200, the first mating piece 100 and the second mating piece 200 are rotatably connected, the relative rotation angle between the first mating piece 100 and the second mating piece 200 is adjustable, one of the first mating piece 100 and the second mating piece 200 is used for detachable connection with the machine head 300, and the other is used for detachable connection with the bracket 400.

[0043] The above-mentioned angle adjustment structure, since one of the first matching piece 100 and the second matching piece 200 is detachably connected to the machine head 300, and the other is detachably connected to the bracket 400, and the relative rotation angle of the first matching piece 100 and the second matching piece 200 is adjustable, the first matching piece 100, the second matching piece 200, after being assembled with the machine head 300 and the bracket 400, can be used to adjust the angle of the machine head 300 relative to the bracket 400, and the assembly of the first matching piece 100 and the second matching piece 200 can be operated without the machine head 300 and the bracket 400, so the assembly environment is simpler. Compared with the traditional equipment in which the angle adjustment elements are directly installed on the machine head 300 and the bracket 400, and then the machine head 300 and the bracket 400 are assembled, the above-mentioned angle adjustment structure only needs to assemble the first matching piece 100, the second matching piece 200 with the machine head 300 and the bracket 400 respectively, so the assembly method is simpler, the assembly efficiency is improved, and it is convenient for maintenance and replacement when a fault occurs.

[0044] Optionally, the relative rotation angle adjustment between the first matching member 100 and the second matching member 200 is to adjust the pitch angle of the head 300 relative to the bracket 400 .

[0045] In one embodiment, if Figures 3 to 6As shown, the first matching piece 100 is provided with a first rotating connecting hole 101, the second matching piece 200 is penetrated by the first rotating connecting hole 101, a plurality of first clamping grooves 201 are circumferentially provided on the outer wall of the second matching piece 200, and a first clamping piece 110 is provided on the inner wall of the first rotating connecting hole 101. The first clamping piece 110 has a first moving position and a second moving position relative to the first matching piece 100, and the first clamping piece 110 can reciprocate between the first moving position and the second moving position. When the first clamping piece 110 is located at the first moving position, the first clamping piece 110 is clamped with the first clamping groove 201, and when the first clamping piece 110 is located at the second moving position, the first clamping piece 110 is disengaged from the first clamping groove 201. At this time, the first clamping member 110 can be moved between the first moving position and the second moving position to engage or disengage the first clamping slot 201. When the first clamping member 110 is moved from being engaged with one of the first clamping slots 201 to being engaged with another first clamping slot 201, the relative rotation angle between the first matching member 100 and the second matching member 200 is adjusted. The above adjustment method is simple and relative displacement is not likely to occur when no adjustment is made.

[0046] Optionally, a bearing is provided between the first mating component 100 and the second mating component 200 , and the bearing sleeves the second mating component 200 , so as to reduce friction and wear when the first mating component 100 and the second mating component 200 rotate relative to each other.

[0047] In other embodiments, the relative rotation angle between the first mating piece 100 and the second mating piece 200 can also be controlled by a motor, wherein the motor can be a stepping motor, which adjusts a certain rotation angle each time; or the first mating piece 100 is sleeved on the outside of the second mating piece 200, and one end of the second mating piece 200 is provided with an outer flange, and the outer flange is provided on the outside of the first mating piece 100, and a fastening hole is provided on the outer flange, and the stud is threadedly engaged with the fastening hole, and the part of the stud passing through the fastening hole can abut against the first mating piece 100. At this time, by tightening the stud, the stud can be pressed against the first mating piece 100, so that the first mating piece 100 and the second mating piece 200 remain relatively fixed, and by loosening the stud, the stud is separated from the first mating piece 100 or no longer pressed against, and at this time, the first mating piece 100 and the second mating piece 200 can rotate relative to each other, and the relative rotation angle adjustment of the first mating piece 100 and the second mating piece 200 can be realized.

[0048] In one embodiment, if Figure 5 and Figure 6As shown, the angle adjustment structure also includes an elastic member 120. An assembly groove 102 is provided on the inner wall of the first rotating connecting hole 101. The elastic member 120 is arranged in the assembly groove 102. One end of the elastic member 120 is connected to the first clamping member 110. The other end of the elastic member 120 is in contact with or connected to the inner wall of the assembly groove 102. The elastic member 120 is used to move the first clamping member 110 to the first moving position. When the first mating piece 100 and the second mating piece 200 rotate relative to each other, the first clamping piece 110 is pushed by the groove wall of the first clamping groove 201, so that the first clamping piece 110 moves from the first moving position to the second moving position along the assembly groove 102, until the first clamping piece 110 disengages from the original first clamping groove 201 and enters another first clamping groove 201. Under the action of the elastic piece 120, the first clamping piece 110 moves back to the first moving position and re-clamps with the other first clamping groove 201. At this time, the relative rotation angle between the first mating piece 100 and the second mating piece 200 is also adjusted accordingly.

[0049] Optionally, the elastic member 120 may be connected to the side wall of the assembly groove 102; or a stopper is provided on the side wall of the assembly groove 102, and the stopper is used to contact or connect with the elastic member 120; or the elastic member 120 may contact or connect with the bottom wall of the assembly groove 102. The above configurations can limit one end of the elastic member 120, so that the first clamping member 110 can be elastically reset under the action of the elastic member 120.

[0050] Optionally, the groove wall of the first slot 201 is an inclined surface or an arc surface, so that when the first matching piece 100 and the second matching piece 200 rotate relative to each other, the first engaging piece 110 can be squeezed by the groove wall of the first slot 201 and move, and then engage with different first slots 201 respectively.

[0051] Alternatively, if Figure 6As shown, the assembly groove 102 is arranged along the radial direction of the second matching member 200, so that the first clamping member 110 can move in a manner perpendicular to the outer surface of the second matching member 200, and the clamping effect with the first clamping groove 201 is better. In other embodiments, an annular clearance groove is provided on the outer wall of the second mating piece 200 along the circumferential direction, and the annular clearance groove is connected to the first clamping groove 201. The first clamping piece 110 moves along the axial direction of the second mating piece 200. At this time, part of the first clamping piece 110 extends out of the assembly groove 102, and the assembly groove 102 is also arranged along the axial direction of the second mating piece 200. The elastic piece 120 is arranged along the axial direction of the second mating piece 200. When the first clamping piece 110 is located in the first moving position, the first clamping piece 110 is clamped with the first clamping groove 201, so that the first mating piece 100 and the second mating piece 200 are relatively fixed. When the second clamping piece moves to the second moving position, the first clamping piece 110 is located in the annular clearance groove. At this time, the first mating piece 100 and the second mating piece 200 can rotate relative to each other, so as to adjust the relative rotation angle of the first mating piece 100 and the second mating piece 200.

[0052] Optionally, the elastic member 120 may be a spring, rubber or a spring sheet, etc., and can enable the first clamping member 110 to return to the first moving position through elastic deformation.

[0053] In this specific embodiment, the number of the first clamping components 110 is one. In other embodiments, the number of the first clamping components 110 may also be at least two. The number of assembly grooves 102 and elastic components 120 is set corresponding to the number of the first clamping components 110. The assembly grooves 102 are arranged in sequence along the circumference of the first rotating connecting hole 101, so as to improve the stability when the first mating component 100 and the second mating component 200 are clamped.

[0054] In other embodiments, the elastic member 120 may not be used, and the first engaging member 110 may be moved manually or by a motor to be inserted into or removed from the first engaging slot 201 .

[0055] In one embodiment, if Figures 5 to 7 As shown, the first clamping member 110 includes a connecting end 111 and a contact end 112, the maximum outer diameter of the contact end 112 is greater than the maximum outer diameter of the connecting end 111, one end of the elastic member 120 is sleeved outside the connecting end 111 and abuts against the contact end 112, and the contact end 112 is engaged with the first clamping groove 201. Through the sleeve connection between the connecting end 111 and the elastic member 120, the elastic member 120 can better carry the first clamping member 110, ensuring that the first clamping member 110 can return to the first moving position.

[0056] In one embodiment, if Figures 5 to 7As shown, the end surface of the contact end 112 is a partial spherical surface. When the end surface of the contact end 112 is a partial spherical surface, the contact end 112 is more easily engaged with or disengaged from different first slots 201 as the first mating piece 100 or the second mating piece 200 rotates, and the hard contact between the contact end 112 and the wall of the first slot 201 is reduced, thereby reducing the wear of the contact end 112.

[0057] In one embodiment, if Figure 6 As shown, the groove wall of the first slot 201 is an arc surface or a spherical surface, and the arc surface radius or spherical surface radius of the groove wall of the first slot 201 is smaller than the radius of the end surface of the contact end 112. At this time, the spherical surface of the contact end 112 can be easily separated from the first slot 201, which is convenient for adjusting the rotation angle.

[0058] Specifically, when the groove wall of the first groove 201 is an arc surface, the arc surface radius of the groove wall of the first groove 201 is smaller than the radius of the end surface of the contact end 112; when the groove wall of the first groove 201 is a spherical surface, the spherical surface radius of the groove wall of the first groove 201 is smaller than the radius of the end surface of the contact end 112.

[0059] In other embodiments, the groove wall of the first slot 201 matches the end surface of the contact end 112 .

[0060] In one embodiment, if Figure 4 , Figure 5 and Figure 8 As shown, the first rotating connecting hole 101 includes a first hole section 101a and a second hole section 101b which are arranged in sequence along a direction away from the machine head 300, the aperture of the first hole section 101a is larger than the aperture of the second hole section 101b, the second matching component 200 includes a docking end 210 and a shifting end 220, the docking end 210 passes through the second hole section 101b, the outer diameter of the shifting end 220 is larger than the aperture of the second hole section 101b, the first matching component 100 is provided with one end of the first hole section 101a which is detachably connected to the machine head 300, and the docking end 210 is connected to the bracket 400. By having different sizes of the docking end 210 and the shift end 220 and the first mating component 100 having one end of the second hole section 101b connected to the machine head 300, the first mating component 100 and the second mating component 200 can be prevented from axial relative displacement after assembly, thereby ensuring the alignment of the first clamping portion and the first clamping groove 201 in the axial position and preventing the first clamping portion and the first clamping groove 201 from being misaligned in the axial direction, thereby preventing the first mating component 100 and the second mating component 200 from being unable to be clamped, thereby enabling the adjustment of the relative rotation angle of the first mating component 100 and the second mating component 200.

[0061] In one embodiment, if Figure 4 and Figure 5As shown, the first clamping groove 201 is provided on the shift end 220, and the first clamping groove 201 extends along the axial direction of the second matching member 200 to the two side surfaces of the shift end 220. At this time, the first clamping member 110 can slide along the first clamping groove 201 and disengage from the shift end 220, which facilitates the first matching member 100 to disengage from the first rotating connection hole 101 along the axial direction, making the assembly of the first matching member 100 and the second matching member 200 easier.

[0062] Specifically, the length of the first clamping groove 201 is equal to the thickness of the shift end 220 , so that the first clamping member 110 can be easily separated from the first clamping groove 201 along the axial direction of the second matching member 220 .

[0063] In another embodiment, the first matching member 100 is provided with a second rotating connection hole, the second matching member 200 is penetrated with the second rotating connection hole, the hole wall of the second rotating connection hole is provided with a plurality of second slots along the circumferential direction, the outer wall of the second matching member 200 is provided with a second clamping member, the second clamping member has a third moving position and a fourth moving position relative to the second matching member 200, the second clamping member can reciprocate between the third moving position and the fourth moving position, when the second clamping member is located at the third moving position, the second clamping member is clamped with the second slot, when the second clamping member is located at the fourth moving position, the second clamping member is disengaged from the second slot. By providing a plurality of second slots on the hole wall, providing a second clamping member on the second matching member 200, and utilizing the movement of the second clamping member between the third moving position and the fourth moving position, the relative rotation angle between the first matching member 100 and the second matching member 200 can also be adjusted.

[0064] Optionally, the cooperation mode of the second clamping member and the second clamping slot can be the same as the assembly mode of the first clamping member 110 and the first clamping slot 201, that is, the second clamping member and the second clamping slot are also clamped by the elastic member 120, and the force is applied to the second clamping member and the second clamping slot is disengaged when the first matching member 100 and the second matching member 200 rotate relative to each other. In addition, the cooperation mode of the second clamping member and the second clamping slot can also be different from the assembly mode of the first clamping member 110 and the first clamping slot 201, such as the cooperation mode mentioned in the other embodiments above.

[0065] like Figure 1 and Figure 2 As shown, one embodiment discloses a blowing device, including a head 300, a bracket 400 and an angle adjustment structure as described above, wherein one of the first matching piece 100 and the second matching piece 200 is detachably connected to the head 300, and the other is detachably connected to the bracket 400.

[0066] The above-mentioned blowing device, since one of the first matching piece 100 and the second matching piece 200 is detachably connected to the machine head 300, and the other is detachably connected to the bracket 400, and the relative rotation angle of the first matching piece 100 and the second matching piece 200 is adjustable, the first matching piece 100, the second matching piece 200 can be used to adjust the angle of the machine head 300 relative to the bracket 400 after being assembled with the machine head 300 and the bracket 400, and the assembly of the first matching piece 100 and the second matching piece 200 can be operated without the machine head 300 and the bracket 400, and the assembly environment is simpler. Compared with the traditional equipment in which the angle adjustment elements are directly installed on the machine head 300 and the bracket 400, and then the machine head 300 and the bracket 400 are assembled, the above-mentioned blowing device only needs to assemble the first matching piece 100, the second matching piece 200 with the machine head 300 and the bracket 400 respectively, and the assembly method is simpler, which improves the assembly efficiency and is convenient for maintenance and replacement when a fault occurs.

[0067] Optionally, the blowing device may be a fan, a circulating fan or other equipment capable of blowing air.

[0068] In one embodiment, if Figure 2 and Fig. 9 As shown, the bracket 400 includes a first split body 410 and a second split body 420 arranged at intervals, and a first mounting portion 310 and a second mounting portion are respectively provided on both sides of the machine head 300, the first mounting portion 310 is detachably connected to the first matching piece 100, the first split body 410 is detachably connected to the second matching piece 200, and the second split body 420 is rotatably connected to the second mounting portion. The machine head 300 is supported by the first split body 410 and the second split body 420 together, and the first split body 410 and the second split body 420 can share the gravity of the machine head 300. At the same time, the center of gravity of the machine head 300 is located between the first split body 410 and the second split body 420, which can better maintain stability, and the pitch angle of the machine head 300 can be adjusted by using the first matching piece 100 and the second matching piece 200.

[0069] Alternatively, if Fig. 9 As shown, the head 300 includes a wind tube member 320 for enclosing an air duct 321 , and the first mounting portion 310 and the second mounting portion are respectively disposed on both sides of the wind tube member 320 , so that the air outlet direction of the head 300 can be adjusted.

[0070] In other embodiments, the first split body 410 is detachably connected to the first matching member 100 , and the first mounting portion 310 is detachably connected to the second matching member 200 .

[0071] In other embodiments, the bracket 400 may also be a single-rod bracket 400, and the head 300 is disposed on the bracket 400. The pitch angle of the head 300 is adjusted between the head 300 and the bracket 400 via the first matching component 100 and the second matching component 200.

[0072] In one embodiment, if Figures 10 to 13 As shown, a support hole 411 is provided on the first split body 410, and one end of the second matching piece 200 extends into the support hole 411 and is detachably connected to the first split body 410. By extending the second matching piece 200 into the support hole 411, the inner wall of the support hole 411 can be used to contact the second matching piece 200 and assist the second matching piece 200 in bearing the pressure of the machine head 300, thereby improving the stress of the second matching piece 200 and preventing the second matching piece 200 from bending or the like.

[0073] In one embodiment, if Figures 11 to 14 As shown, a corner stopper 130 is provided on one side of the first matching member 100 close to the first split body 410, and an angle stopper groove 412 is provided on one side of the first split body 410 close to the machine head 300. The angle stopper groove 412 is arranged around the support hole 411, and the corner stopper 130 is used to extend into the angle stopper groove 412 and slide along the angle stopper groove 412. The angle at which the corner stopper 130 can rotate along the angle stopper groove 412 is less than 360°. At this time, the angle stopper 130 and the angle stopper groove 412 can be used to control the rotation angle of the machine head 300 relative to the bracket 400, so that the machine head 300 cannot rotate one circle or more relative to the bracket 400, and the circuit will not be damaged due to excessive twisting.

[0074] Optionally, the angle limit slot 412 has a first position, and when the angle limit portion 130 rotates to the first position, the air outlet of the head 300 is set in the horizontal direction. In addition, the angle limit slot 412 also has a second position and a third position, and the second position and the third position are respectively located on both sides of the first position. When the angle limit portion 130 rotates to the second position, the air outlet of the head 300 is set in the oblique downward direction. When the angle limit portion 130 rotates to the third position, the air outlet of the head 300 is set in the oblique upward direction, and the second position and the third position are respectively located at the two ends of the angle limit slot 412.

[0075] Optionally, the angle at which the corner limiter 130 can rotate along the angle limiter slot 412 is greater than 160° and less than 200°. Under the premise of satisfying the need for adjusting the pitch angle of the head 300, it can prevent the head 300 from rotating too much relative to the bracket 400, resulting in excessive twisting of the wire. Specifically, the angle at which the corner limiter 130 can rotate along the angle limiter slot 412 is 180°.

[0076] In one embodiment, if Figures 11 to 13As shown, a guide groove 413 is provided on the inner wall of the support hole 411, and a protrusion 230 matching the guide groove 413 is provided on the second matching member 200. Through the cooperation between the guide groove 413 and the protrusion 230, the second matching member 200 can be guided to extend into the support hole 411, ensuring that the second matching member 200 extends into the support hole 411 in a correct posture, preventing the second matching member 200 from being assembled incorrectly with the first split body 410, and facilitating assembly.

[0077] Optionally, there are two guide grooves 413, and the two guide grooves 413 are respectively arranged on two opposite side walls of the support hole 411. In this case, the guiding effect is better.

[0078] Alternatively, if Figures 10 to 14 As shown, a clearance groove is provided on the inner wall of the first rotating connection hole 101, and the clearance groove is arranged corresponding to the protrusion 230, and the docking end 210 includes an extension portion 240, and the extension portion 240 is located at the end of the docking end 210 away from the gear end 220. The extension portion 240 is used to extend out of the first rotating connection hole 101 and extend into the support hole 411, and the protrusion 230 is arranged on the outer surface of the extension portion 240. During the assembly process of the first mating component 100 and the second mating component 200, the second mating component 200 can be first passed through the first rotating connection hole 101, wherein the protrusion passes through the first mating component 100 along the yield groove, so that the extension portion 240 passes through the first rotating connection hole 101 and is located outside the first mating component 100. The extension portion 240 can continue to be used to extend into the support hole 411, so that the protrusion 230 cooperates with the guide groove 413, and the first split 410 is connected to the second mating component 200. At this time, the assembly of the first mating component 100 and the second mating component 200 and the assembly of the second mating component 200 and the first split 410 are completed, and the first mating component 100 and the second mating component 200 can still rotate relative to each other.

[0079] In one embodiment, if Figure 2 As shown, there are two first matching pieces 100 and two second matching pieces 200, one of which is disposed between the second split body 420 and the second mounting portion, the second split body 420 and the second matching piece 200 are detachably connected, and the second mounting portion and the first matching piece 100 are detachably connected. At this time, the first split body 410 and the handpiece 300, the second split body 420 and the handpiece 300 can both adjust the rotation angle of the handpiece 300 through the first matching piece 100 and the second matching piece 200, and can both fix the relative position of the adjusted handpiece 300 and the bracket 400, so that the handpiece 300 can remain stable after the angle is adjusted.

[0080] In other embodiments, the second split body 420 and the nose 300 may be simply hinged or connected via bearings, and the pitch angle of the nose 300 may be adjusted by using the angle adjustment structure between the first split body 410 and the nose 300.

[0081] In one embodiment, if Fig. 9 , Fig.11 and Fig.13 As shown, the above-mentioned blowing device also includes a first fixing member and a second fixing member, the first matching member 100 is provided with a first through hole 103, the first mounting portion 310 is provided with a first threaded hole 311, the first fixing member penetrates the first through hole 103 and is threadedly matched with the first threaded hole 311, the first split body 410 is provided with a second through hole 414, the second matching member 200 is provided with a second threaded hole 202, the second fixing member penetrates the second through hole 414 and is threadedly matched with the second threaded hole 202. At this time, through the threaded connection of the first fixing member and the second fixing member, the first matching member 100 and the first mounting portion 310, the first split body 410 and the second matching portion can be detachably connected, the assembly and disassembly are simple, the fixing stability is good, and the cost is low.

[0082] Alternatively, if Fig.12 and Fig.13 As shown, the second through hole 414 is arranged on the bottom surface of the support hole 411, and the second threaded hole 202 is arranged on the end surface of the second matching piece 200 away from the machine head 300, so that the second fixing piece can pass through the second through hole 414 from the side of the first split body 410 away from the machine head 300 and threadably cooperate with the second matching piece 200, which makes the operation simpler.

[0083] Alternatively, if Figure 3 , Fig. 9 and Fig.11 As shown, there are a plurality of first through holes 103 , which are arranged on the first matching member 100 at intervals along the circumference of the first rotating connection hole 101 , and the number of the first mounting portions 310 corresponds to the number of the first through holes 103 .

[0084] Optionally, the first fixing member and the second fixing member are bolts, screws, etc.

[0085] In other embodiments, the second matching component 200 includes a first end and a second end, the first end is provided with a first rotating connection portion and is rotatably matched with the first matching component 100, the second end is inclined relative to the first end, and the first split body 410 is provided with a functional hole plugged into the second end, and the functional hole is arranged in an inclined downward direction. A first locking portion may be provided outside the second end, and a second locking portion is provided inside the functional hole. The first locking portion and the second locking portion are concave-convex matching structures. After the second end is plugged into the functional hole, the first end is arranged along the horizontal direction. At this time, the second end can be inserted into or pulled out of the functional hole to realize the detachable connection between the second matching component 200 and the first split body 410.

[0086] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0087] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0088] 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 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, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0089] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0090] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0091] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0092] 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 a central 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 a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

Claims

1. An angle adjustment structure, characterized in that: The invention comprises a first matching piece and a second matching piece, wherein the first matching piece is provided with a first rotating connection hole, the second matching piece is penetrated with the first rotating connection hole, the first matching piece and the second matching piece are rotatably connected, the relative rotation angle between the first matching piece and the second matching piece is adjustable, one of the first matching piece and the second matching piece is used for detachable connection with the machine head, and the other is used for detachable connection with the bracket; The first rotating connecting hole includes a first hole section and a second hole section arranged in sequence along the direction away from the machine head, the aperture of the first hole section is larger than the aperture of the second hole section, the second matching piece includes a docking end and a gear end, the docking end passes through the second hole section, the outer diameter of the gear end is larger than the aperture of the second hole section, the first matching piece is provided with an end of the first hole section which is detachably connected to the machine head, and the docking end is connected to the bracket.

2. The angle adjustment structure according to claim 1, characterized in that: A plurality of first clamping grooves are circumferentially provided on the outer wall of the second mating piece, and a first clamping piece is provided on the inner wall of the first rotating connecting hole. The first clamping piece has a first moving position and a second moving position relative to the first mating piece, and the first clamping piece can reciprocate between the first moving position and the second moving position. When the first clamping piece is located at the first moving position, the first clamping piece is clamped with the first clamping groove, and when the first clamping piece is located at the second moving position, the first clamping piece is disengaged from the first clamping groove.

3. The angle adjustment structure according to claim 2, characterized in that: It also includes an elastic member, an assembly groove is provided on the inner wall of the first rotating connecting hole, the elastic member is arranged in the assembly groove, one end of the elastic member is connected to the first clamping member, and the other end of the elastic member is in contact with or connected to the inner wall of the assembly groove, and the elastic member is used to move the first clamping member to the first moving position.

4. The angle adjustment structure according to claim 3, characterized in that: The first clamping member includes a connecting end and a contact end, the maximum outer diameter of the contact end is larger than the maximum outer diameter of the connecting end, one end of the elastic member is sleeved outside the connecting end and abuts against the contact end, and the contact end is clamped and matched with the first clamping slot.

5. The angle adjustment structure according to claim 4, characterized in that: The end surface of the contact end is a partial spherical surface.

6. The angle adjustment structure according to claim 5, characterized in that: The groove wall of the first clamping groove is an arc surface or a spherical surface, and the radius of the arc surface or the radius of the spherical surface of the groove wall of the first clamping groove is smaller than the radius of the end surface of the contact end.

7. The angle adjustment structure according to claim 2, characterized in that: The first clamping groove is arranged on the shift end, and the first clamping groove extends along the axial direction of the second matching piece to both side surfaces of the shift end.

8. The angle adjustment structure according to claim 1, characterized in that: A second rotating connecting hole is provided on the first matching piece, the second matching piece passes through the second rotating connecting hole, a plurality of second slots are circumferentially provided on the hole wall of the second rotating connecting hole, a second clamping piece is provided on the outer wall of the second matching piece, the second clamping piece has a third moving position and a fourth moving position relative to the second matching piece, the second clamping piece can reciprocate between the third moving position and the fourth moving position, when the second clamping piece is located at the third moving position, the second clamping piece is clamped with the second slot, when the second clamping piece is located at the fourth moving position, the second clamping piece is disengaged from the second slot.

9. A blowing device, characterized in that: It comprises a machine head, a bracket and the angle adjustment structure as described in any one of claims 1 to 8, wherein one of the first matching piece and the second matching piece is detachably connected to the machine head, and the other is detachably connected to the bracket.

10. The blowing device according to claim 9, characterized in that: The bracket includes a first split body and a second split body which are spaced apart from each other. A first mounting portion and a second mounting portion are respectively provided on both sides of the machine head. The first mounting portion is detachably connected to the first mating piece, the first split body is detachably connected to the second mating piece, and the second split body is rotatably connected to the second mounting portion.

11. The blowing device according to claim 10, characterized in that: A supporting hole is provided on the first split body, and one end of the second matching piece extends into the supporting hole and is detachably connected to the first split body.

12. The blowing device according to claim 11, characterized in that: A corner limiting portion is provided on a side of the first mating part close to the first split body, and an angle limiting groove is provided on a side of the first split body close to the machine head. The angle limiting groove is arranged around the support hole, and the corner limiting portion is used to extend into the angle limiting groove and slide along the angle limiting groove. The angle at which the corner limiting portion can rotate along the angle limiting groove is less than 360°.

13. The blowing device according to claim 11, characterized in that: A guiding groove is provided on the inner wall of the supporting hole, and a protrusion matching with the guiding groove is provided on the second matching piece.

14. The blowing device according to claim 10, characterized in that: There are two of the first matching pieces and two of the second matching pieces, one of the first matching pieces and one of the second matching pieces are arranged between the second split body and the second mounting portion, the second split body and the second matching piece are detachably connected, and the second mounting portion and the first matching piece are detachably connected.

15. The blowing device according to claim 10, characterized in that: It also includes a first fixing member and a second fixing member, the first matching member is provided with a first through hole, the first mounting portion is provided with a first threaded hole, the first fixing member passes through the first through hole and is threadedly matched with the first threaded hole, the first split body is provided with a second through hole, the second matching member is provided with a second threaded hole, the second fixing member passes through the second through hole and is threadedly matched with the second threaded hole.

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