CN108561323B - Pitching assembly, machine head mechanism and household appliance - Google Patents

Abstract

The invention provides a pitching assembly, a machine head mechanism applying the pitching assembly and a household appliance capable of pitching. The invention provides a pitching assembly, which is used for driving a machine head assembly to rotate along a vertical direction, and comprises: the device comprises a bracket and a rotating shaft, wherein a limit column is arranged on the bracket; the rotating shaft rotatably penetrates through the support, the rotating shaft comprises a first end, a first blocking strip and a second blocking strip are arranged at intervals in a protruding mode at the first end, when the pitching assembly drives the machine head assembly to rotate along the vertical direction, the first blocking strip or the second blocking strip is stopped at the limiting column, and the included angle between the first blocking strip and the second blocking strip ranges from 100 degrees to 150 degrees. The household appliance applying the pitching assembly has the advantage of large pitching angle.

Description

Pitching assembly, machine head mechanism and household appliance

Technical Field

The invention relates to the field of household appliances, in particular to a pitching assembly, a machine head mechanism applying the pitching assembly and a household appliance capable of pitching.

Background

Currently, part of the nose mechanisms of fans on the market include: the device comprises a machine head assembly, a left and right shaking head assembly connected with the machine head assembly and a pitching assembly. The left and right shaking head assemblies drive the machine head assemblies to rotate along the horizontal direction, namely, shake the head left and right along the horizontal direction. The pitching assembly is positioned below the head assembly and the left-right shaking head assembly and supports the head assembly and the left-right shaking head assembly, and is used for driving the head assembly and the left-right shaking head assembly to perform pitching motion so that the head assembly and the left-right shaking head assembly rotate to a preset angle, namely, rotate to a preset angle along the vertical direction. However, the pan left and right assemblies may collide with the pitching mechanism during the pitching motion, resulting in a smaller pitch angle of the fan.

Disclosure of Invention

In view of the above, the present invention provides a pitching assembly, which aims to provide a household appliance using the pitching assembly with the advantage of a large pitching angle.

In order to solve the technical problem, the pitch assembly provided by the invention is used for driving a machine head assembly to vertically rotate, and comprises:

the bracket is provided with a limit column;

the rotating shaft rotatably penetrates through the support, the rotating shaft comprises a first end, a first blocking strip and a second blocking strip are arranged at intervals in a protruding mode at the first end, when the pitching assembly drives the machine head assembly to rotate along the vertical direction, the first blocking strip or the second blocking strip is stopped at the limiting column, and the included angle between the first blocking strip and the second blocking strip ranges from 100 degrees to 150 degrees.

Further, the support is further provided with a plurality of spacing holes arranged at intervals, an end face of the first end is further concavely provided with a containing groove, the pitching assembly further comprises a spacing ball contained in the containing groove, and the spacing ball is limited on the wall of a corresponding spacing hole when the machine head assembly rotates to a preset pitching angle in the vertical direction under the driving of the pitching assembly.

Further, the pitching assembly further comprises an elastic piece accommodated in the accommodating groove, one end of the elastic piece is abutted against the bottom wall of the accommodating groove, and the other end of the elastic piece is abutted against the limiting ball.

Further, the pitching assembly further comprises a wire blocking rib, one end of the wire blocking rib is connected with the first blocking strip, and the other end of the wire blocking rib is connected with the second blocking strip.

Further, the limiting holes are distributed on a circumference taking an intersection point of a rotation central axis of the rotating shaft and a plane where the bracket is located as a circle center and taking a distance between the intersection point and the limiting ball as a radius.

Further, the range of the included angle between the central lines of every two adjacent limiting holes is as follows: 5-20 deg.

Further, the shaft further includes a second end connected to the first end, and the cross-sectional area of the shaft decreases in a direction from the first end toward the second end.

Further, the bracket comprises a first side wall and a second side wall opposite to the first side wall, one end of the rotating shaft rotatably penetrates through the first side wall, and the other end of the rotating shaft rotatably penetrates through the second side wall.

Further, the pitching assembly further comprises a torsion spring sleeved on the rotating shaft and a limiting piece arranged on the rotating shaft, the torsion spring comprises a first end and a second end which are oppositely arranged, the second side wall is provided with a stop piece, the first end is limited on the limiting piece, and the second end is stopped on the stop piece, so that the torsion spring is in a normal compression state.

Further, the wire diameter of the torsion spring ranges from 2mm to 3.5mm; and/or the number of the groups of groups,

the rotation direction of the torsion spring is left rotation; and/or the number of the groups of groups,

the number of turns of the torsion spring is 8-15.

Further, the second side wall is provided with a plurality of holes arranged at intervals, and the stop piece penetrates through one of the holes to stop the second end part of the torsion spring.

The invention also provides a machine head mechanism, which comprises a machine head assembly, a rotating assembly and a pitching assembly, wherein the machine head assembly is connected with the pitching assembly, and the pitching assembly drives the machine head assembly to rotate to a preset pitching angle in the vertical direction; the rotating assembly is connected with the pitching assembly and is positioned below the pitching assembly, and the rotating assembly drives the machine head assembly to rotate in the horizontal direction.

The invention also provides a household appliance capable of pitching, which comprises the pitching assembly.

The pitch assembly of the present invention comprises a bracket and a shaft. Be equipped with spacing post on this support, this pivot rotationally passes the support, and the first end of this pivot is protruding to be equipped with first blend stop and the second blend stop that the interval set up, and this every single move subassembly drives the aircraft nose subassembly and rotates along vertical direction, and first blend stop or second blend stop are in spacing post for the every single move angle of this every single move subassembly can be limited by first blend stop and second blend stop. The included angle between the first barrier strip and the second barrier strip is 100-150 degrees, so that the head assembly applying the pitching assembly can rotate 100-150 degrees along the vertical direction, the pitching angle is increased, the pitching assembly only drives the head assembly to rotate along the vertical direction, and the left and right head swinging mechanism of the fan does not rotate along the vertical direction along with the pitching assembly, so that the fan applying the pitching assembly does not collide with the pitching assembly or the head assembly, and the fan has the advantage of large pitching angle.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a side view of an embodiment of a pitch assembly of the present invention.

FIG. 2 is a schematic diagram of an embodiment of a pitch assembly according to the present invention.

Fig. 3 is a schematic view of another angle configuration of the pitch assembly shown in fig. 2.

Fig. 4 is a schematic view of a further angle of the pitch assembly shown in fig. 2.

Fig. 5 is a cross-sectional view of the pitch assembly shown in fig. 2.

Fig. 6a is a schematic structural view of an embodiment of the pitch assembly according to the present invention when the limit post stops the first stop bar.

FIG. 6b is a schematic view of an embodiment of the pitch assembly of the present invention in a pitch position.

FIG. 6c is a schematic view of an embodiment of the pitch assembly of the present invention when the stop post stops the second stop bar.

FIG. 7 is a schematic view of a nose mechanism according to an embodiment of the present invention.

FIG. 8 is a cross-sectional view of an embodiment of the handpiece mechanism of FIG. 7.

Fig. 9 is a schematic view of a part of the structure of the head mechanism shown in fig. 7.

Fig. 10 is a schematic view of a part of the structure of the head mechanism shown in fig. 7.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

It will also be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

Referring to fig. 1-6c, the present invention provides a pitch assembly 10 for driving a nose assembly 30 to rotate in a vertical direction.

The pitch assembly 10 comprises:

a bracket 11, wherein a limit post 1315 is arranged on the bracket 11;

the rotating shaft 13, the rotating shaft 13 rotatably passes through the bracket 11, the rotating shaft 13 comprises a first end 131, the first end 131 is convexly provided with a first blocking strip 1311 and a second blocking strip 1313 which are arranged at intervals, when the pitching assembly 10 drives the nose assembly 30 to rotate along the vertical direction, the first blocking strip 1311 or the second blocking strip 1313 is blocked on the limiting column 1315, and the included angle between the first blocking strip 1311 and the second blocking strip 1313 ranges from 100 degrees to 150 degrees.

It is appreciated that the angle between the first bar 1311 and the second bar 1313 ranges from 100 °, 105 °, 110 °, 115 °, 120 °, 125 °, 130 °, 135 °, 140 °, 145 °, or 150 °.

The pitch assembly 10 of the present invention comprises a bracket 11 and a shaft 13. The bracket 11 is provided with a limit post 1315, the rotating shaft 13 rotatably passes through the bracket 11, the first end 131 of the rotating shaft 13 is convexly provided with a first stop bar 1311 and a second stop bar 1313 which are arranged at intervals, the pitching assembly 10 drives the machine head assembly 30 to vertically rotate, and the first stop bar 1311 or the second stop bar 1313 is stopped at the limit post 1315, so that the pitching angle of the pitching assembly 10 can be limited by the first stop bar 1311 and the second stop bar 1313. The angle between the first barrier strip 1311 and the second barrier strip 1313 is in the range of 100-150 degrees, so that the nose assembly 30 using the pitching assembly 10 has a larger pitching angle.

The bracket 11 is further provided with a plurality of spacing holes 1112, an end face of the first end 131 is further provided with a receiving groove 1321 in a concave manner, the pitching assembly 10 further comprises a spacing ball 15 received in the receiving groove 1321, and the spacing ball 15 is limited on a wall of the corresponding spacing hole 1112 when the nose assembly 30 rotates to a preset pitching angle in a vertical direction under the driving of the pitching assembly 10.

It is understood that the diameter of the limiting ball 15 may be larger than the diameter of the limiting hole 1112, so that the limiting ball 15 may be limited on the wall of the corresponding limiting hole 1112.

The limiting holes 1112 are distributed on a circumference taking an intersection point of the rotation central axis of the rotating shaft 13 and a plane where the bracket 11 is located as a circle center and taking a distance between the intersection point and the limiting ball 15 as a radius.

The included angle a between the center lines of each two adjacent limiting holes 1112 is in the range: 5-20 deg.

The number of the limiting holes 1112 may be 11 to 16.

It is understood that the number of the limiting holes 1112 may be 11, 12, 13, 14, 15, or 16.

After the limiting ball 15 moves from one limiting hole 1112 to another adjacent limiting hole 1112, the angle a of rotation of the nose assembly 30 in the vertical direction is 5 °, 7 °, 8 °, 9 °, 10 °, 11 °, 12 °, 13 °, 14 °, 15 °, 16 °, 17 °, 18 °, 19 °, or 20 °.

In one embodiment of the present invention, 11 limiting holes 1112 may be provided, and the angle between the first stop bar 1311 and the second stop bar 1313 is 100 °. After the limit ball 15 moves from one of the limit holes 1112 to the other adjacent limit hole 1112, the angle a of rotation of the nose assembly 30 is 10 degrees.

It can be appreciated that the number of the limiting holes 1112 and the spacing between adjacent limiting holes 1112 can be set according to actual needs to adjust the rotation angle of the handpiece assembly 30 after the limiting ball 15 moves from one of the limiting holes 1112 to the other adjacent limiting hole 1112.

According to the technical scheme of the invention, the limiting holes 1112 are distributed on a circumference taking the intersection point of the rotation central axis of the rotating shaft 13 and the plane of the first side wall 111 as the circle center and the distance between the intersection point and the limiting ball 15 as the radius, so that the spacing between the limiting ball 15 and any limiting hole 1112 is equal, and the limiting ball 15 can be limited in any limiting hole 1112 in the process that the machine head assembly 30 rotates to a preset pitching angle in the vertical direction under the driving of the pitching assembly 10.

In the technical scheme of the invention, the limiting ball 15 is accommodated in the accommodating groove 1321, and the nose assembly 30 is driven by the pitching assembly 10 to rotate to a preset pitching angle in the vertical direction, so that the limiting ball 15 can roll along the first side wall 111 and is limited on the wall of the corresponding limiting hole 1112. When the limit balls 15 are limited on the walls of the corresponding limit holes 1112, the nose assembly 30 can be maintained at the pitch angle without slipping down. By the cooperation between the limit ball 15 and the limit hole 1112, the user adjusts the position of the limit ball 15 to move the nose assembly 30 to a suitable pitch angle.

The pitch assembly 10 further includes an elastic member 17 accommodated in the accommodation groove 1321, one end of the elastic member 17 abuts against the bottom wall of the accommodation groove 1321, and the other end abuts against the limit ball 15.

The elastic member 17 may be a spring.

The limiting ball 15 is movably disposed in the receiving groove 1321 through the elastic member 17, and a fixed pre-tightening force is applied to the elastic member 17 through the limiting action of the bottom wall and the first sidewall 111 of the receiving groove 1321, and the elastic member 17 is in a long compressed state. When the nose assembly 30 is tilted upward or downward in the vertical direction, the limiting ball 15 moves from one limiting hole 1112 to the other limiting hole 1112, and in the process, the elastic member 17 is further compressed and then slowly released, and since the elastic member 17 is always in a long compressed state, after the limiting ball 15 moves to the other limiting hole 1112, the elastic member 17 applies an elastic force to the limiting ball 15 to stop the limiting ball 15 against the wall of the limiting hole 1112, so that the nose assembly 30 can be kept at a pitching angle without sliding downward.

Referring to fig. 6a, the stop posts 1315 stop the first stop bar 1311 when the resilient ball 15 is positioned in the stop hole 1112 near the edge of the frame 11, and the pitch assembly 10 is in the initial position 1117 (i.e., the pitch end position), the pitch angle of the pitch assembly 10 is 90 °, and the nose assembly 30 is blowing upward. At this point, torsion spring 135 is already in a compressed state.

Referring to fig. 6b, when the rotating shaft 13 is rotated, the second stop bar 1313 moves in a direction approaching the stop post 1315, the elastic ball 15 is stopped at a stop hole 1112 located in the middle area, the pitch assembly 10 is in a pitch position, and the pitch angle of the pitch assembly 10 is less than 90 ° and greater than-10 °. At this time, the torsion spring 135 is also in a compressed state, and the radius of each turn of the torsion spring 135 is smaller than that of the torsion spring 135 when in the initial position 1117.

Referring to fig. 6c, continuing to rotate the rotating shaft 13, the second stop bar 1313 moves in a direction approaching the limit post 1315, and the elastic ball 15 is limited to a limit hole 1112 located near the other edge of the bracket 11, the pitch assembly 10 is in the pitch end position, and the pitch angle of the pitch assembly 10 is-10 °. At this time, the torsion spring 135 is also in a compressed state, and the radius of each turn of the torsion spring 135 is smaller than that of the torsion spring 135 when in the pitch position 1117.

The shaft 13 further includes a second end 133 connected to the first end 131, and the cross-sectional area of the shaft 13 decreases in a direction from the first end 131 toward the second end 133.

The cross-sectional area of the rotating shaft 13 decreases along the direction from the first end 131 to the second end 133, so that the torsion spring 135 can be firmly sleeved on the rotating shaft 13, and the torsion spring 135 has better connection performance between one end, close to the limiting hole 1112 and the limiting ball 15, and the rotating shaft 13.

The pitch assembly 10 further includes a wire bar 1315, one end of the wire bar 1315 being connected to the first bar 1311 and the other end being connected to the second bar 1313.

To prevent the wire harness 70 from being scratched and wound by the first and/or second bars 1311 and 1313 during the horizontal and/or vertical rotation of the home appliance, a fan-shaped wire blocking rib 1315 may be provided, one end of the wire blocking rib 1315 being connected to the first and second bars 1311 and 1313, and the other end being connected to the second bars 1313 such that the wire harness 70 is not scratched and wound by the first and/or second bars 1311 and 1313.

The bracket 11 includes a first sidewall 111 and a second sidewall 112 disposed opposite to the first sidewall 111, one end of the rotation shaft 13 rotatably penetrates the first sidewall 111, and the other end of the rotation shaft 13 rotatably penetrates the second sidewall 112.

In one embodiment of the present invention, the motor bracket 31 of the handpiece assembly 30 includes two opposite connection walls 311, one end of the rotating shaft 13 rotatably passes through the first side wall 111 to be connected to one connection wall 311, and the other end of the rotating shaft 13 rotatably passes through the second side wall 112 to be connected to the other connection wall 311.

In one embodiment of the present invention, the pitch assembly 10 further comprises oppositely disposed first and second bushings 138, 139. The first sleeve 138 is disposed on the inner surface of the first side wall 111, and the second sleeve 139 is disposed on the outer surface of the second side wall 112. One end of the rotating shaft 13 rotatably penetrates through the first side wall 111 and the first shaft sleeve 138, and the other end rotatably penetrates through the second side wall 112 and the second shaft sleeve 139. The first sleeve 138 and the second sleeve 139 may be used to protect the shaft 13.

The first sleeve 138 and the first sidewall 111 may be coupled by a positioning member. The positioning member may be a screw or the like. The second sleeve 139 and the second sidewall 112 may be connected by another securing member. The positioning member may be a screw or the like.

It will be appreciated that one end of the shaft 13 rotatably passes through the first side wall 111 and the first shaft sleeve 138, and is connected to a connecting wall 311, and the other end rotatably passes through the second side wall 112 and the second shaft sleeve 139, and is connected to the other connecting wall 311, so that when the shaft 13 rotates, the first side wall 111 and the second side wall 112 do not rotate with the shaft 13, and the connecting wall 311 rotates under the driving of the shaft 13, so that the head assembly 30 can rotate in the vertical direction under the driving of the shaft 13 of the pitch assembly 10.

The pitch assembly 10 further comprises a torsion spring 135 sleeved on the rotating shaft 13 and a limiting member 137 arranged on the rotating shaft 13, wherein the torsion spring 135 comprises a first end 1351 and a second end 1353 which are oppositely arranged, the second side wall 112 is provided with a stop member 1123, the first end 1351 is limited on the limiting member 137, and the second end 1353 is stopped on the stop member 1123, so that the torsion spring 135 is in a normal compression state.

The stopper 137 may be inserted into the rotation shaft 13 and partially expose the rotation shaft 13.

It will be appreciated that the torsion spring of the present invention is always in a compressed state. The torsion spring is in a compressed state even in the initial state.

According to the technical scheme of the invention, the first end 1351 of the torsion spring 135 is limited on the limiting piece 137, the second end 1353 is stopped on the stopping piece 1223, when the rotating shaft 13 rotates, the torsion spring 135 is screwed up due to the limiting effect of the limiting piece 137 and the stopping effect of the stopping piece 1223, and at the moment, the rotating shaft 13 generates a reactive pretightening force to prevent the machine head assembly 30 from sliding downwards.

The wire diameter of the torsion spring 135 ranges from 2 to 3.5mm.

Alternatively, torsion spring 135 has a wire diameter of 2.0mm, 2.5mm, 3mm, 3.5mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm, 2.6mm, 2.7mm, 2.8mm, or 2.9mm.

The torsion spring 135 of the present invention has a larger wire diameter, so that the torsion spring 135 of the present invention has a better torsion resistance.

The number of turns of the torsion spring 135 is 8 to 15. Alternatively, the torsion spring 135 may have 8, 9, 10, 11, 12, 13, 14, 15, or the like turns.

The number of turns of the torsion spring 135 can be adjusted according to actual requirements, so that the torsion spring 135 can pretighten better. Moreover, the appropriate number of turns and wire diameters may be selected to ensure a longer service life of torsion spring 135.

The torsion spring 135 is left-handed in its sense.

The spiral direction of the torsion spring 135 may be divided into left and right handed. Left hand may refer to each turn of torsion spring 135 rotating in a clockwise direction.

According to the technical scheme of the invention, the rotation direction of the torsion spring 135 is left-handed, and the cross-sectional area of the rotating shaft 13 decreases in the direction from the first end 131 to the second end 133, so that when the rotating shaft 13 is rotated to make the nose assembly 30 dip, the gap between each circle of the torsion spring 135 is shortened.

The second side wall 112 is provided with a plurality of openings 1121 spaced apart from each other, and the stopper 1123 passes through one of the openings 1121 to stop the second end 1353 of the torsion spring 135.

The stopper 1123 may pass through the second sleeve 139 and the second sidewall 112, connecting the second sleeve 139 and the second sidewall 112. The second sleeve 139 may be provided with a hole corresponding to the opening 1121.

The portion of the stop 1123 passing through the second side wall 112 forms a stop end 1125, the stop end 1125 being referred to as the second end 1353 of the torsion spring 135.

The second side wall 112 of the present invention is provided with a plurality of openings 1121 spaced apart, and the stopper 1123 passes through one of the openings 1121 to stop the second end 1353 of the torsion spring 135.

It is understood that the plurality of openings 1121 may be disposed on the second sidewall 112 in a direction from one side of the second sidewall 112 to the other side. It will be appreciated that by locating the stop 1123 in a different opening 1121, the stop 1123 will vary in terms of the stopping force against the second section 1353 of the torsion spring 135. Therefore, the position, number and spacing of the openings 1121 can be set according to the actual needs, and the stop force of the stop 1123 to the second end 1353 of the torsion spring 135 can be adjusted by setting the stop 1123 in the adapted opening 1121, so as to match the handpiece assemblies 30 with different weights by adjusting the pretightening force, thereby ensuring the stability of the pitching function.

It will be appreciated that the second sleeve 139 is also open with an opening opposite the through hole 1121, and the stop 1123 passes through one of the openings 1121 and an opening of the second sleeve 139 to stop the second end 1353 of the torsion spring 135.

The first side wall 111 of the bracket 11 has a first end 1111 and a second end 1113 connected to the first end 1111, wherein the first end 1111 is provided with a plurality of spacing holes 1112 disposed at intervals, and the second end 1113 is bent relative to the first end 1111 to form an inclined surface 1114. The limiting ball 15 is guided by the inclined surface 1114 and is accommodated in the accommodating groove 1321, and when the nose assembly 30 is driven by the pitching assembly 10 to rotate to a preset pitching angle in the vertical direction, the limiting ball 15 is limited on the wall of the corresponding limiting hole 1112.

The second end 1113 of the first sidewall 111 is bent in a direction approaching the second sidewall 112 to form the inclined surface 1114; the end surface of the protrusion 132 of the rotating shaft 13 facing the inclined surface 1114 is provided with the receiving groove 1321.

During bending of the second end 1113 in a direction toward the second side wall 112, a portion of the second end 1113 is separated from the first end 1111 such that the second end 1113 may form a chamfer 1114. The chamfer 1114 may be an outer surface of the second end 1113.

In one embodiment of the present invention, the second end 1113 is further bent to form a bent segment 1115. The bent section 1115 can protect the user from being scratched during the process of installing the limit ball 15.

After the limiting ball 15 is guided by the inclined surface 1114 and is mounted in the accommodating groove 1321, the rotating shaft 13 can be rotated, so that the limiting ball 15 is limited on the wall of a limiting hole 1112. The position of the limiting ball 15, which is limited to the hole wall of the limiting hole 1112 closest to the accommodating groove 1321, is defined as an initial position 1117, and the rotating shaft 13 is continuously rotated, so that the limiting ball 15 is separated from the initial position 1117 and is continuously limited to the hole walls of other limiting holes 1112, so that the head assembly 30 has better stability in pitching motion.

It will be appreciated that the resilient member 17 also rolls along the ramp 1114 under the guidance of the ramp 1114 to be received in the receiving slot 1321.

When the nose assembly 30 of the present invention is driven by the pitching assembly 10 to rotate to a preset pitching angle in the vertical direction, the limiting ball 15 is limited on the wall of the corresponding limiting hole 1112, so that the nose assembly 30 can keep stable at the preset pitching angle. Since the second end 1113 of the bracket 11 is bent relative to the first end 1111 to form the inclined surface 1114, the gap between the second end 1113 of the bracket 11 and the end surface of the rotating shaft 13 becomes larger, so that when the limit ball 15 is mounted in the receiving groove 1321, the limit ball 15 can roll along the inclined surface 1114 to be received in the receiving groove 1321 under the guidance of the inclined surface 1114, and the nose assembly 30 of the present invention has the advantage of easy installation.

Referring to fig. 7-10, the present invention further provides a nose mechanism 100, including a nose assembly 30 and a rotating assembly 50, and further including a pitching assembly 10, where the nose assembly 30 is connected to the pitching assembly 10, and the pitching assembly 10 drives the nose assembly 30 to rotate in a vertical direction to a preset pitching angle; the rotating assembly 50 is connected with the pitching assembly 10 and is located below the pitching assembly 10, and the rotating assembly 50 drives the nose assembly 30 to rotate in the horizontal direction.

Since the handpiece mechanism 100 adopts all the technical solutions of all the embodiments, at least the beneficial effects of the technical solutions of the embodiments are provided, and will not be described in detail herein.

In an embodiment of the present invention, both ends of the rotating shaft 13 are convexly provided with protruding ends (not shown), and the protruding ends can be connected with the corresponding connecting walls 311. The two ends of the rotating shaft 13 are respectively connected with the corresponding connecting walls 311, so that when the rotating shaft 13 rotates, the connecting walls 311 can be driven to rotate, and the nose assembly 30 can be driven to rotate by the pitching assembly 10.

It will be appreciated that the pitch direction shown in fig. 7 is the direction in which the head assembly 30 rotates in the vertical direction.

In one embodiment of the present invention, the pitch angle ranges are: -30-70, -30-80, -30-90, -30-120, -30-110, -30-100, -20-80, -20-90, -20-100, -20-110, -20-120, -20-130, -10-90, -10-100, -10-110, -10-120, -10-130, -10-140, etc.

It will be appreciated that when the pitch angle is set to-30 °, the nose assembly 30 rotates downward in the vertical direction to an angle of 30 ° to the horizontal; when the pitch angle is set to 90 °, the head assembly 30 is rotated to 90 ° in the vertical direction, so that the head assembly 30 blows "toward the top.

Optionally, the pitch angle is: -30 °, -25 °, -20 °, -15 °, -10 °, -5 °, -3 °, 10 °, 20 °, 30 °, 40 °, 50 °, 60 °, 70 °, 80 °, 90 °, 95 °, 100 °, 110 °, 115 °, 120 °, 130 ° or 140 °, etc. It will be appreciated that the nose assembly 30 may be manually adjusted to a desired pitch angle as desired.

It will be appreciated that nose assembly 30 performs a pitching motion along rotational centerline B. The rotation shaft 13 also rotates along the rotation center line B. The nose assembly 30 and the pitch assembly 10 rotate horizontally along the rotation centerline C, i.e., the rotation centerline of the rotor assembly 50 is C.

When the head assembly 30 is tilted up by 90 ° along the rotation center line B, the rotation center line B intersects with the rotation center line C, and the rotation center line D of the motor 33 of the head assembly 30 coincides with the rotation center line C of the rotating assembly 50. At this time, the center of gravity of the nose mechanism 100 is relatively centered, so that the center of gravity of the nose mechanism 100 is relatively stable, and the nose mechanism is not easy to fall over. As the nose assembly 30 is tilted up 90 along the rotational centerline B, the nose assembly 30 blows "upward" toward the top.

The driving mechanism comprises a pitching assembly 10 and a rotating assembly 50, wherein the nose assembly 30 is connected with the pitching assembly 10, the nose assembly 30 rotates to a preset pitching angle in the vertical direction through the pitching assembly 10, the rotating assembly 50 is connected with the pitching assembly 10 and is positioned below the pitching assembly 10, the rotating assembly 50 drives the nose assembly 30 and the pitching assembly 10 to rotate in the horizontal direction, and when the nose assembly 30 is driven by the pitching assembly 10 to be at a preset pitching angle, the nose assembly 30 can also rotate in the horizontal direction under the driving of the rotating assembly 50. Because the rotating assembly 50 is positioned below the pitching assembly 10, the pitching assembly 10 only drives the nose assembly 30 to rotate in the vertical direction, so that the rotating assembly 50 does not perform pitching motion and collision with the pitching assembly 10 is avoided, and therefore, the fan has a larger pitching angle.

Moreover, the pitching assembly 10 is located between the head assembly 30 and the rotating assembly 50, and after the head assembly 30 is driven by the pitching assembly 10 to rotate to a preset angle in the vertical direction, the rotating assembly 50 drives the head assembly 30 and the pitching assembly 10 to rotate in the horizontal direction. Compared with the prior art, the pitching assembly supports the machine head assembly and the left-right shaking assembly, and after the machine head assembly and the left-right shaking assembly rotate to a preset angle along the vertical direction, the left-right shaking assembly also drives the machine head assembly to rotate in the horizontal direction. The technical scheme of the invention can ensure that the fan runs stably and the gravity center is stable, so that the turnover is not easy to occur.

Further, after the head assembly 30 is driven by the pitching assembly 10 to rotate to a predetermined angle in the vertical direction, the rotating assembly 50 drives the head assembly 30 and the pitching assembly 10 to rotate in the horizontal direction. Compared with the prior art, after the machine head assembly and the left and right head shaking assembly rotate to a preset angle along the vertical direction, the fan forms the preset angle between the left and right head shaking assembly and the pitching assembly in the horizontal rotation process, and the left and right head shaking assembly does a back and forth shearing action relative to the pitching assembly. The technical scheme of the invention has the advantage of strong safety, and can not hurt fingers.

The rotation assembly 50 includes a motor bracket 51 for mounting a motor 53 and a connector 52 provided on the motor bracket 51, and the pitch assembly 10 further includes a bottom wall 113 connected to the first side wall 111 and the second side wall 112, and the motor bracket 51 is connected to the bottom wall 113 of the second bracket 11 through the connector 52.

In an embodiment of the present invention, the material of the connecting piece 52 is plastic, and the material of the motor bracket 51 is metal.

According to the technical scheme of the invention, the bottom wall 13 is connected with the first side wall 111 and the second side wall 112, and the bottom wall 13 is also connected with the motor bracket 51 of the rotating assembly 50 through the connecting piece 52, so that the rotating assembly 50 can drive the pitching assembly 10 and the nose assembly 30 to rotate along the horizontal direction through the bottom wall 13, the first side wall 111, the second side wall 112, the connecting piece 52 and the first bracket 31.

The motor 53 has an output shaft 531, and the motor bracket 51 is provided with a through hole (not shown). In one embodiment of the present invention, the output shaft 531 passes through the through hole.

The rotating assembly 50 further comprises a crank 533, a connecting rod 535, a positioning member 537, and a connecting column 536 provided on the positioning member 537, wherein one end of the connecting rod 535 is connected with the crank 533, and the other end is connected with the connecting column 536.

The crank 533 is sleeved on the part of the output shaft 531 penetrating through the through hole.

Link 535 is rotatably connected to connecting post 536.

The motor support 51 comprises a connecting drum 513, wherein the positioning member 537 is provided with a containing cavity 5371, and the connecting drum 513 is rotatably contained in the containing cavity 5371.

The motor 53 drives the handpiece assembly 30 and the pitch assembly 10 to rotate in a horizontal direction via the output shaft 531, crank 533, link 535, connecting post 536, motor bracket 51, support 52 and bottom wall 113.

When the motor 53 in the technical scheme of the invention drives the output shaft 531 to rotate, the output shaft 531 drives the crank 53 to rotate, and drives the connecting rod 535, the connecting piece 52 and the motor bracket 51 connected with the crank 53 to rotate, so as to drive the nose assembly 30 and the pitching assembly 10 to rotate in the horizontal direction.

The drive mechanism also includes a wiring harness 70 and the handpiece assembly 30 includes a motor 33.

The motor bracket 51 is provided with a through hole 511, and the through hole 511 is communicated with the connecting drum 513.

The connecting piece 52 is provided with a through hole 521, and the wire harness 70 sequentially passes through the connecting drum 513, the through hole 511, the through hole 521 and the pitching assembly 10 to be connected with the motor 33, so as to provide electric energy for the motor 33.

The central axes of receiving chamber 5371 and connecting drum 513 may coincide with a rotational center line C of rotating assembly 50 such that rotating assembly 50 is less affected by horizontal rotation of pitch assembly 10 and head assembly 30 during such horizontal rotation, thereby making wire harness 70 less susceptible to wear and longer service life of wire harness 70.

The motor 33 drives the output shaft 331 to rotate, so as to drive the fan blade 35 connected with the output shaft 331 to rotate.

It will be appreciated that the blades 35 of the fan head are rotatable about the central axis D of the output shaft 331.

The wire harness 70 of the present invention passes through the accommodating chamber 5371 and the via 511 in order to be connected with the motor 33, so as to supply the motor 33 with electric power.

Further, after the nose assembly 30 is at a pitch angle, the nose assembly 30 rotates left and right along the horizontal rotation center C in the horizontal direction, and the fan blades 35 also rotate around the central axis D, so that a larger negative pressure is generated at the fan head, more air is sucked in, and the fan blades 35 can blow out larger wind with a larger wind speed. Therefore, the fan of the invention has the advantages of long air supply distance and strong wind speed.

In an embodiment of the present invention, the fan blades 35 include a main fan blade 351 and a kilo-leaf 353, a plurality of main fan blades 351 are fixedly arranged on the hub, the kilo-leaf 353 is arranged between adjacent main fan blades 351, and the kilo-leaf 353 and the main fan blades 351 are arranged in a duck-type arrangement in the axial direction of the hub. When the fan head rotates, the air flow on the air inlet side is accelerated by the thousand-leaf 353 to form a separation vortex which interferes with the air flow of the main fan blade 351, and suction force for taking away the backflow accumulated on the front edge of the root of the main fan blade 351 is generated on the suction surface of the main fan blade 351, so that the air flow on the front edge of the root of the main fan blade 351 is smooth, the actual acting area is increased, and therefore, the inner flow quality of the fan head is good and the efficiency is high. The fan head has larger air supply range, longer air supply distance and faster air speed.

Generally, the position of the thousand leaves 353 in the axial direction of the hub is upstream of the main blades 351 with respect to the air flow flowing through the fan head, so that the quality of the flow in the fan head is better.

In the embodiment of the present invention, the main fan blade 351 and the kilo blade 353 are respectively designed for forward bending and backward bending, and the kilo blade 353 adopts a backward bending front edge and a straight rear edge, and the rear edge has a forward-bending angle. Wherein, the thousand leaves 353 and the main fan blades 351 are arranged on the hub in an upper duck type layout. It should be noted that, the kilo-leaf 353 and the main fan blade 351 may be arranged on the hub in a lower duck-type layout, so as to enhance the flexibility of the fan head design. It should be appreciated that the main fan blade 351 may also be a swept or straight blade design.

The handpiece mechanism 100 further includes a mask 37, and the fan blades 35 are accommodated in the mask 37.

An output shaft 331 of the motor 33 is connected to the fan blade 35 through the mask 37.

The invention also provides a household appliance capable of pitching.

The household appliance comprises the pitch assembly 10. The household appliance can be a fan, a handheld fan, a ceiling fan, a warmer and the like with a pitching function.

The household appliance adopts all the technical schemes of all the embodiments, so that the household appliance has at least all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted.

When the household appliance is a fan, the fan further comprises the handpiece mechanism 100, and the support assembly supports the handpiece mechanism. In one embodiment of the present invention, the fan may include the above-described head assembly 30 and the stand 90, and the stand 90 may have a cylindrical structure. The rotating assembly 50 is disposed on the upright 90. So that no shearing action is generated between the rotating assembly 50 and the upright 90, preventing the user's hand from being pinched.

The foregoing description of the preferred embodiments of the present invention should not be construed as limiting the scope of the invention, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the following description and drawings or any application directly or indirectly to other relevant art(s).

Claims (9)

1. The machine head mechanism comprises a machine head assembly and a rotating assembly, and is characterized by further comprising a pitching assembly, wherein the machine head assembly is connected with the pitching assembly, and the pitching assembly drives the machine head assembly to rotate to a preset pitching angle in the vertical direction; the rotating assembly is connected with the pitching assembly and is positioned below the pitching assembly, and the rotating assembly drives the machine head assembly to rotate in the horizontal direction;

the every single move subassembly for drive aircraft nose subassembly rotates along vertical direction, every single move subassembly includes:

the bracket is provided with a limit column;

the rotating shaft rotatably penetrates through the support, the rotating shaft comprises a first end, a first blocking strip and a second blocking strip are arranged at intervals in a protruding mode, when the pitching assembly drives the machine head assembly to rotate along the vertical direction, the first blocking strip or the second blocking strip is stopped at the limiting column, and the included angle between the first blocking strip and the second blocking strip ranges from 100 degrees to 150 degrees;

the support is also provided with a plurality of spacing holes which are arranged at intervals, the spacing holes are arranged along the axial direction of the rotating shaft, an accommodating groove is further concavely formed in one end face of the first end, the accommodating groove is arranged along the axial direction of the rotating shaft, the pitching component further comprises a spacing ball accommodated in the accommodating groove, and the spacing ball is limited on the wall of a corresponding spacing hole when the machine head component rotates to a preset pitching angle in the vertical direction under the driving of the pitching component;

the pitching assembly further comprises an elastic piece accommodated in the accommodating groove, one end of the elastic piece is abutted against the bottom wall of the accommodating groove, and the other end of the elastic piece is abutted against the limiting ball;

the second end of the first side wall is bent along the direction close to the second side wall to form an inclined plane; the bulge of the rotating shaft faces the end face of the inclined plane to form the accommodating groove.

2. The head mechanism of claim 1, wherein the limiting holes are distributed on a circumference taking an intersection point of a rotation central axis of the rotating shaft and a plane of the bracket as a circle center and taking a distance between the intersection point and the limiting ball as a radius.

3. The nose mechanism of claim 2, wherein the included angle between the centerlines of each adjacent limiting aperture ranges from: 5-20 deg.

4. A handpiece mechanism as in any one of claims 1-3, wherein the shaft further comprises a second end connected to the first end, the cross-sectional area of the shaft decreasing in a direction from the first end to the second end; and/or the number of the groups of groups,

the pitching assembly further comprises a wire blocking rib, one end of the wire blocking rib is connected with the first blocking strip, and the other end of the wire blocking rib is connected with the second blocking strip.

5. A handpiece mechanism as claimed in any one of claims 1 to 3, characterized in that the support comprises a first side wall and a second side wall arranged opposite the first side wall, one end of the shaft being rotatable through the first side wall and the other end of the shaft being rotatable through the second side wall.

6. The head mechanism of claim 5, wherein the pitch assembly further comprises a torsion spring sleeved on the rotating shaft and a limiting member arranged on the rotating shaft, the torsion spring comprises a first end and a second end which are oppositely arranged, the second side wall is provided with a stop member, the first end is limited on the limiting member, and the second end is stopped on the stop member, so that the torsion spring is in a normal pressure shrinkage state.

7. The handpiece mechanism of claim 6, wherein the torsion spring has a wire diameter in the range of 2 to 3.5mm; and/or the number of the groups of groups,

the rotation direction of the torsion spring is left rotation; and/or the number of the groups of groups,

the number of turns of the torsion spring is 8-15.

8. The handpiece mechanism as in claim 6, wherein the second sidewall defines a plurality of spaced apart openings, the stop passing through one of the openings to stop the second end of the torsion spring.

9. A household appliance capable of pitching, characterized in that it comprises a pitching assembly according to any one of claims 1-8.