CN216077676U - Head swinging mechanism of electric appliance - Google Patents

Abstract

The utility model provides a yaw mechanism of electrical apparatus, includes the chassis, sets up carousel and driving motor on the chassis, and the upper end and the electrical apparatus main part fixed connection of carousel are equipped with convex rack on the chassis, and driving motor sets up on the carousel, is equipped with gear and rack and meshes its characterized in that on driving motor's the output shaft mutually: the rack is of a circular arc-shaped closed structure formed by connecting external teeth, internal teeth and a circular arc transition tooth section, a circular arc-shaped closed track is convexly arranged on the chassis around the outer side of the rack, the gear is arranged in the track and meshed with the rack and can move along the track under the action of the driving motor, a sliding rail is fixed on the lower end face of the rotary table, a sliding block capable of sliding back and forth along the sliding rail is mounted on the sliding rail, and the driving motor is mounted on the sliding block and can slide inside and outside the sliding rail through the sliding block so as to realize the switching of the gear between the internal teeth and the external teeth. The utility model has reasonable structural design, constant and stable head swinging speed, and can swing between 0 and 350 degrees, thereby realizing large-angle head swinging.

Description

Head swinging mechanism of electric appliance

Technical Field

The utility model relates to the technical field of household appliances, in particular to a head swinging mechanism which is used for household appliances such as an air purifier, a warmer and a fan.

Background

The swinging mechanism of the existing household appliance mostly adopts a transmission mode of a connecting rod and a crank, the structure has the defects of large torque required during transmission, unstable swinging speed and reversing and incapability of swinging at a large angle, and the abrasion is serious in the operation process, thereby influencing the service life of the product.

According to the Chinese patent with the prior patent number of CN201220241211.0, namely an oscillating rotating mechanism and an electric heater adopting the oscillating rotating mechanism, the oscillating rotating mechanism comprises a base, a turntable and a synchronous motor, wherein the middle part of the base is provided with a disc hole, and the turntable is rotatably arranged in the disc hole of the base; a motor shaft of the synchronous motor is connected with a gear; an arc-shaped inner rack is fixed in a sinking groove of the base corresponding to the lower side of a motor shaft of the synchronous motor, and the inner rack is meshed with the gear; a flange type shaft sleeve matched with a disc hole on the base is sleeved on a central shaft of the turntable, and the flange type shaft sleeve adopts antifriction skirt surface and shaft surface structures to prevent the turntable from directly contacting the base; the lower end of the central shaft of the rotary disc is connected with a rotary disc bottom cover, and the rotary disc bottom cover fixes the rotary disc on the disc hole of the base and limits the axial displacement of the rotary disc.

Also, chinese patent "a mechanism of shaking head and have its electric fan heater" that patent number is 202022294074.4, the mechanism of shaking head includes motor, drive disk assembly, support frame, motor and support frame fixed connection, motor and drive disk assembly fixed connection and drive disk assembly rotates, wherein, the mechanism of shaking head still includes base and rolling structure, be equipped with on the base with drive disk assembly complex track, so that the support frame for the base rotates, the rolling structure is located orbital the outside.

The two oscillating mechanisms adopt a transmission mode of a gear and a rack, the oscillating process is stable, abrasion is reduced, and large-angle oscillating cannot be realized.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a head swinging mechanism of an electric appliance, which has reasonable structural design and can realize stable head swinging at a large angle aiming at the technical current situation.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a yaw mechanism of electrical apparatus, includes the chassis, sets up carousel and driving motor on the chassis, and the upper end and the electrical apparatus main part fixed connection of carousel are equipped with convex rack on the chassis, and driving motor sets up on the carousel, is equipped with gear and rack and meshes its characterized in that on driving motor's the output shaft mutually: the rack is of a circular arc-shaped closed structure formed by connecting external teeth, internal teeth and a circular arc transition tooth section, a matched track of the circular arc-shaped closed structure is convexly arranged on the chassis around the outer side of the rack, the gear is arranged in the track and meshed with the rack and can move along the track under the action of the driving motor, a sliding rail is fixed on the lower end face of the rotary table, a sliding block capable of sliding back and forth along the sliding rail is arranged on the sliding rail, and the driving motor is arranged on the sliding block and can slide inside and outside the sliding rail through the sliding block so as to realize the switching of the gear between the internal teeth and the external teeth.

As an improvement, a disc hole is convexly arranged at the center of the upper end face of the chassis, a bearing is installed in the disc hole, a central shaft which is matched and connected with the bearing is convexly arranged on the lower end face of the disc, the rack and the track are both of arc-shaped closed structures taking the disc hole as the circle center, the distance between the inner wall of the track and the rack is matched with the gear, the slide rail is radially arranged corresponding to the disc hole on the chassis, and the slide block can radially slide back and forth along the slide rail.

Further, the slide rail includes two parallel straight rails, and the both ends top of straight rail is equipped with gag lever post fixed connection respectively, and the both ends of straight rail are equipped with the engaging lug, and is fixed through the lower terminal surface of screw with the carousel, and the upper end of gag lever post offsets with the lower terminal surface of carousel, has the clearance that supplies the main part of slider to put into and remove between the upper end of straight rail and the lower terminal surface of carousel.

And the sliding block is in a rectangular outline shape, the lower end face of the sliding block is provided with a sliding groove matched with the two straight rails, the sliding block is arranged on the sliding rail in a limiting sliding mode through the sliding groove, and the driving motor is fixed at the lower end of the sliding block.

Still further, the driving motor is a synchronous motor, the synchronous motor is arranged below the sliding rail through a motor frame and fixed with the sliding block, and the gear is arranged on an output shaft at the lower end of the synchronous motor.

Further, the arc angle of the arc-shaped structure of the rack and the track is 180-350 degrees, the height of the track is consistent with that of the rack and the gear, and the height of the disc hole is higher than that of the rack.

And finally, the turntable is of a round cover-shaped structure matched with the chassis, a circle of convex edge is formed at the position, close to the outer edge, of the chassis, and the lower edge of the turntable is sleeved outside the convex edge and is abutted and flushed with the outer edge of the chassis.

Compared with the prior art, the utility model has the advantages that: the rack on the chassis is of a circular arc closed structure formed by connecting external teeth, internal teeth and a circular arc transition tooth section, the lower end of the turntable is provided with a slide rail, and the motor can move along the slide rail through the slide block, so that the gear can rotate along the peripheral surface of the rack and realize the switching of the gear between the internal teeth and the external teeth, and the effect of back-and-forth swinging is achieved; because the gear rotates along the same direction in the closed track, the motor does not need to switch directions, the abrasion is less, and the running is more stable; the track is arranged outside the rack, so that the gear can move stably and reliably, and the swing head is more stable. The utility model has reasonable structural design, constant and stable head swinging speed, and can swing between 0 and 350 degrees, thereby realizing large-angle head swinging.

Drawings

FIG. 1 is a schematic view of an embodiment of the present invention installed on an electrical appliance;

FIG. 2 is a schematic view of a gear engaged with external teeth of a rack;

FIG. 3 is a schematic perspective view of a gear engaged with outer teeth of a rack;

FIG. 4 is a schematic view of the gear engaging the internal teeth of the rack;

FIG. 5 is a schematic perspective view of the gear engaging with the internal teeth of the rack;

fig. 6 is a schematic structural view of the present invention in a state where the turntable is separated from the chassis.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 6, a head swing mechanism of an electrical appliance comprises a chassis 1, a turntable 2 and a driving motor 6 arranged on the chassis 1, wherein the upper end of the turntable 2 is fixedly connected with an electrical appliance main body 10, the electrical appliance main body 10 can be an air purifier, a heater or an electric fan, etc., the chassis 1 is provided with an arc-shaped rack 3, the driving motor 6 is arranged on the turntable 2, an output shaft of the driving motor 6 is provided with a gear 5 meshed with the rack 3, the rack 3 is an arc-shaped closed structure formed by connecting an outer tooth 32, an inner tooth 31 and an arc transition tooth section 33, the chassis 1 is convexly provided with a track 4 around the outer side of the rack 3, the gear 5 is arranged in the track 4 and meshed with the rack 3 and can move along the track 4 under the action of the driving motor 6, the lower end face of the turntable 2 is fixed with a slide rail 8, the slide rail 8 is provided with a slide block 7 capable of sliding back and forth along the slide rail 8, the driving motor 6 is mounted on the slide 7 and can slide inside and outside on the slide rail 8 through the slide 7 to realize the switching of the gear 5 between the internal teeth 31 and the external teeth 32.

The concrete structure is as follows: the upper end face central point of chassis 1 puts protruding a disc hole 11 that is equipped with, installs a bearing 9 in the disc hole 11, carousel 2 for with 1 complex dome shape structure in chassis, the protruding center pin 21 of being connected with the bearing 9 cooperation that is equipped with of the lower terminal surface of carousel 2, the position shaping that chassis 1 is close to the outward flange has the protruding edge 12 of round, the lower edge cover of carousel 2 is established and is offset with the outward flange on chassis outside protruding edge 12 and flush. The rack 3 and the track 4 are both of a semicircular closed structure taking the disc hole 11 as a circle center, the distance between the inner wall of the track 4 and the rack 3 is matched with the gear 5, the slide rail 8 is radially arranged corresponding to the disc hole 11 on the chassis 1, and the slide block 7 can radially slide back and forth along the slide rail 8.

The slide rail 8 comprises two parallel straight rails 81, limiting rods 82 are respectively arranged above two ends of the straight rails 81 and fixedly connected with the two ends of the straight rails 81, connecting lugs 83 are convexly arranged at two ends of the straight rails 81 and fixed with the lower end face of the turntable 2 through screws, the upper ends of the limiting rods 82 are abutted against the lower end face of the turntable 2, and a gap for the main body of the slide block 7 to be placed in and move is formed between the upper ends of the straight rails 81 and the lower end face of the turntable 2; the sliding block 7 is a rectangular contour plate, the lower end surface of the sliding block 7 is provided with a sliding groove 71 matched with the two straight rails 81, and the sliding block 7 is arranged on the sliding rail 8 in a limiting sliding manner through the sliding groove. The driving motor 6 is a synchronous motor 6, the synchronous motor 6 is arranged below the sliding rail 8 through a motor frame and fixed with the sliding block 7, and the gear 5 is a circular gear and is arranged on an output shaft at the lower end of the synchronous motor 6. The arc angle of the arc-shaped structures of the rack 3 and the track 4 is 180-350 degrees, the height of the track 4 is consistent with that of the rack 3 and the gear 5, and the height of the disc hole 11 is higher than that of the rack 3.

The working principle is as follows:

the synchronous motor 6 rotates to drive the gear 5 to rotate, the gear 5 is meshed with the rack 3 and moves along the track 4, and when the gear 5 moves to the corner positions of the external teeth 32 and the internal teeth 31, the driving motor 6 moves along the slide rail 8 through the slide block 7, so that the switching between the internal teeth 31 and the external teeth 32 is realized, and the purpose of swinging the head back and forth is achieved; the arc angle of the arc-shaped structure of the rack 3 and the track 4 in the embodiment can reach 350 degrees at most, so that large-angle swing can be realized.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (7)

1. The utility model provides a yaw mechanism of electrical apparatus, includes the chassis, sets up carousel and driving motor on the chassis, and the upper end and the electrical apparatus main part fixed connection of carousel are equipped with convex rack on the chassis, and driving motor sets up on the carousel, is equipped with gear and rack and meshes its characterized in that on driving motor's the output shaft mutually: the rack is of a circular arc-shaped closed structure formed by connecting external teeth, internal teeth and a circular arc transition tooth section, a matched track of the circular arc-shaped closed structure is convexly arranged on the chassis around the outer side of the rack, the gear is arranged in the track and meshed with the rack and can move along the track under the action of the driving motor, a sliding rail is fixed on the lower end face of the rotary table, a sliding block capable of sliding back and forth along the sliding rail is arranged on the sliding rail, and the driving motor is arranged on the sliding block and can slide inside and outside the sliding rail through the sliding block so as to realize the switching of the gear between the internal teeth and the external teeth.

2. The head swinging mechanism of the electric appliance according to claim 1, wherein: the center of the upper end face of the chassis is convexly provided with a disc hole, a bearing is installed in the disc hole, the lower end face of the disc is convexly provided with a central shaft which is matched and connected with the bearing, the rack and the track are both of arc-shaped closed structures taking the disc hole as the circle center, the distance between the inner wall of the track and the rack is matched with the gear, the slide rail is radially arranged corresponding to the disc hole on the chassis, and the slide block can radially slide back and forth along the slide rail.

3. The head swing mechanism of an electric appliance according to claim 2, wherein: the slide rail includes two parallel straight rails, and the both ends top of straight rail is equipped with gag lever post fixed connection respectively, and the both ends of straight rail are equipped with the engaging lug, and is fixed with the lower terminal surface of carousel through the screw, and the upper end of gag lever post offsets with the lower terminal surface of carousel, has the clearance that supplies the main part of slider to put into and remove between the upper end of straight rail and the lower terminal surface of carousel.

4. The head swing mechanism of an electric appliance according to claim 3, wherein: the slider is a rectangle profile shape, and the lower terminal surface of slider is seted up with two straight rail complex spouts, but the slider sets up on the slide rail through spout spacing slip, and driving motor fixes the lower extreme at the slider.

5. The head swinging mechanism of the electric appliance according to claim 4, wherein: the driving motor is a synchronous motor, the synchronous motor is arranged below the sliding rail through a motor frame and fixed with the sliding block, and the gear is arranged on an output shaft at the lower end of the synchronous motor.

6. The head swing mechanism of an electric appliance according to any one of claims 2 to 5, wherein: the arc angle of the arc-shaped structure of the rack and the track is 180-350 degrees, the height of the track is consistent with that of the rack and the gear, and the height of the disc hole is higher than that of the rack.

7. The head swinging mechanism of the electric appliance according to claim 6, wherein: the turntable is of a round cover-shaped structure matched with the chassis, a circle of convex edge is formed at the position, close to the outer edge, of the chassis, and the lower edge of the turntable is sleeved outside the convex edge and is abutted to and flushed with the outer edge of the chassis.

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