CN112971603A

CN112971603A - Thickness-adjustable cleaning head brush bar

Info

Publication number: CN112971603A
Application number: CN201911324367.8A
Authority: CN
Inventors: 王彦荣; 曹斌; 田生芃; 张金京; 王灵恩; 孙季一
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2021-06-18
Anticipated expiration: 2039-12-17
Also published as: CN112971603B

Abstract

A cleaning head brush bar capable of adjusting thickness is characterized by comprising a connecting rod, a hose, a supporting rod, a positioning disc, a ratchet wheel and a motor, wherein a plurality of connecting rods are arranged at intervals in parallel and enclose into a ring shape; the two hoses are annular and elastic in the radial direction and are respectively connected to two ends of the connecting rod; the support rods are radially arranged in each hose to form a radial shape; the positioning disc is provided with a pin shaft movably connected with the middle part of the supporting rod; the ratchet wheels can be rotatably arranged on the corresponding positioning discs, each ratchet wheel is provided with a plurality of circumferentially arranged ratchet teeth, a tooth socket with a gradient changing inner wall is formed between the ratchet teeth, and the bottom end of the support rod is abutted against the inner wall of the tooth socket; the motor can drive the ratchet wheel to rotate. The motor drives the ratchet wheel to rotate, the support rod is driven to swing around the pin shaft, and the support rod further drives the hose to retract or extend inwards, so that the thickness of the brush rod is adjusted.

Description

Thickness-adjustable cleaning head brush bar

Technical Field

The invention relates to a cleaning device, in particular to a brush rod applied to a cleaning head.

Background

Brush bars are used in vacuum cleaners as part of the cleaner head to agitate dirt and dust on the surface to be cleaned. The agitation helps the dust to rise from the surface so that it can then be sucked up into the separator. At present, the size of the brush rod in the suction head is fixed, so the gap between the brush rod and the shell is also fixed, and the suction head can only suck dust objects smaller than the gap and cannot suck dust objects with larger particles.

Disclosure of Invention

The invention aims to provide a cleaning head brush stick with adjustable thickness aiming at the technical current situation.

The technical scheme adopted by the invention for solving the technical problems is as follows: a thickness-adjustable cleaning head brush bar is characterized by comprising

The connecting rods are arranged in parallel at intervals and enclose a ring;

the two hoses are annular and elastic in the radial direction and are respectively connected to two ends of the connecting rod;

the supporting rods are radially arranged in each hose to form a radial shape, and each supporting rod is also connected with one end of the connecting rod;

two positioning disks are correspondingly arranged in the hose, and each positioning disk is provided with a pin shaft movably connected with the middle part of the supporting rod;

the ratchet wheels are two ratchet wheels which can be rotatably arranged on the corresponding positioning discs, each ratchet wheel is provided with a plurality of circumferentially arranged ratchets, a tooth socket with a gradient changing inner wall is formed between the ratchets, and the bottom end of the supporting rod is abutted against the inner wall of the tooth socket; and

and the motor can drive the ratchet wheel to rotate.

The motor is arranged on one of the positioning disks and can drive one of the ratchet wheels to rotate, and the two ratchet wheels are connected through a connecting rod.

3. A cleaning head brush bar as claimed in claim 2, wherein a connecting cylinder is provided between the locating plates, the connecting rod being located in the connecting cylinder.

The motor drive structure is preferably set as follows: the output end of the motor is provided with an output gear, and correspondingly, the inner side of one ratchet wheel is provided with an inner gear ring matched with the output gear.

Preferably, the tooth grooves are circular arc-shaped.

Compared with the prior art, the invention has the advantages that: the motor drives the ratchet wheel to rotate, the support rod is driven to swing around the pin shaft, and the support rod further drives the hose to retract or extend outwards to deform, so that the thickness of the brush rod is adjusted. Thus, the adjustment can be carried out in more practical application occasions.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment.

Fig. 2 is a schematic view of another structure of the embodiment.

Fig. 3 is an exploded view of fig. 1.

Fig. 4 is another view-angle structure diagram of the motor in fig. 1.

FIG. 5 is a state diagram of the thickest embodiment.

FIG. 6 is a state diagram of the thinnest embodiment.

Detailed Description

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

As shown in fig. 1, 2 and 3, the brush stick of the cleaning head with adjustable thickness in the embodiment includes a connecting rod 4, a hose 5, a support rod 6, a positioning disc 2, a ratchet 3 and a motor 1, wherein the connecting rod 4 is a plurality of rods arranged at intervals in parallel and enclosed into a ring shape; the hoses 5 are annular and elastic in the radial direction, are two and are respectively connected to two ends of the connecting rod 4.

The support rods 6 are radially arranged in each hose 5 to form a radial shape, and each support rod 6 is also connected with one end of the connecting rod 4; two positioning disks 2 are correspondingly arranged in the hose 5, and each positioning disk 2 is provided with a pin shaft movably connected with the middle part of the supporting rod 6; a connecting cylinder 8 is arranged between the positioning plates 2.

The ratchet wheels 3 are two and can be rotatably arranged on the corresponding positioning disc 2, and the two ratchet wheels 3 are connected through a connecting rod 7. The connecting rod 7 is located within the connecting cylinder 8. Each ratchet wheel 3 is provided with a plurality of circumferentially arranged ratchet teeth 31, a tooth groove 32 with a gradient of an inner wall is formed between the ratchet teeth 31, and the tooth groove 32 in the embodiment is in a circular arc shape. The bottom end of the support rod 6 is abutted against the inner wall of the tooth groove 32 and can swing along the tooth groove 32 in the state that the ratchet wheel 3 rotates;

the motor 1 can drive the ratchet wheel 3 to rotate. Specifically, as shown in fig. 4, the output end of the motor 1 has an output gear 11, and correspondingly, the inside of the ratchet wheel 3 of one of the output gears has an internal gear ring 33 matched with the output gear 11.

The motor drives the ratchet wheel to rotate, the support rod is driven to swing around the pin shaft, and the support rod further drives the hose to retract or extend inwards, so that the thickness of the brush rod is adjusted.

As shown in FIG. 5, when the bottom end of the support rod 6 is located at the lowest position of the tooth grooves 32, the radial length of the hose is the largest, i.e. the thickest state of the brush bar. As shown in fig. 6, when the bottom end of the support rod 6 is located at the highest position of the tooth grooves 32, the radial length of the hose is the smallest, that is, the brush bar is the thinnest.

Claims

1. A thickness-adjustable cleaning head brush bar is characterized by comprising

A plurality of connecting rods (4) which are arranged in parallel at intervals and enclose into a ring shape;

the two hoses (5) are annular and elastic in the radial direction and are respectively connected to two ends of the connecting rod (4);

the supporting rods (6) are radially arranged in each hose (5) and are radial, and each supporting rod (6) is also connected with one end of the connecting rod (4);

two positioning disks (2) are correspondingly arranged in the hose (5), and each positioning disk (2) is provided with a pin shaft movably connected with the middle part of the supporting rod (6);

the two ratchet wheels (3) are rotatably arranged on the corresponding positioning disc (2), each ratchet wheel (3) is provided with a plurality of circumferentially arranged ratchet teeth (31), a tooth groove (32) with the gradient of the inner wall changing is formed between the ratchet teeth (31), and the bottom end of the supporting rod (6) is abutted against the inner wall of the tooth groove (32); and

a motor (1) which can drive the ratchet wheel (3) to rotate.

2. A thick and thin adjustable brush bar for a cleaning head as claimed in claim 1, wherein said motor (1) is mounted on one of the positioning plates (2) and can drive one of the ratchet wheels (3) to rotate, and said two ratchet wheels (3) are connected by a connecting rod (7).

3. A cleaning head brush bar as claimed in claim 2, wherein a connecting cylinder (8) is provided between the positioning plates (2), and the connecting rod (7) is located in the connecting cylinder (8).

4. A cleaning head brush bar according to claim 2, characterized in that the output of the motor (1) has an output gear (11), correspondingly, the inside of the ratchet wheel (3) of one of them has an internal gear ring (33) adapted to the output gear (11).

5. A thickness adjustable cleaning head brush bar according to claim 1, characterized in that said gullets (32) are rounded.