WO2018188330A1

WO2018188330A1 - Vacuum cleaner nozzle and vacuum cleaner

Info

Publication number: WO2018188330A1
Application number: PCT/CN2017/110374
Authority: WO
Inventors: 彭劲松; 梁玉
Original assignee: 苏州市伟克斯电器有限公司
Priority date: 2017-04-12
Filing date: 2017-11-10
Publication date: 2018-10-18
Also published as: EP3610768A1; CN207285997U; EP3610768A4; US20200245831A1

Abstract

A vacuum cleaner nozzle (10) capable of both ensuring air tightness and preventing a suction port from warping, and a vacuum cleaner. The vacuum cleaner nozzle (10) matches an air channel connection part of a vacuum cleaner, and comprises: a connection pipe (14), one end of which is in communication with the air channel connection part; a nozzle body (11), comprising an outlet (113) corresponding to the air channel connection part and rotatably mounted at the other end of the connection pipe (14), a hollow accommodating part (111) in front of the outlet (113), and a suction port (112) disposed on the hollow accommodating part (111) and facing a surface to be cleaned, the suction port (112) being provided with a supporting surface in contact with the surface to be cleaned; a hose (16), located between the connection pipe (14) and the outlet (113) and used for making the connection pipe (14) in sealed communication with the outlet (113); and an elastic return member (15), separately pressing against the connection pipe (14) and the nozzle body (11) and used for keeping the angle between the axis of the connection pipe (14) leading to the air channel connection part and the supporting surface at a predetermined degree.

Description

Vacuum cleaner nozzle and vacuum cleaner

Technical field

The present invention relates to a vacuum cleaner nozzle, and a vacuum cleaner comprising the vacuum cleaner nozzle.

Background technique

Vacuum cleaner nozzles (also known as electric ground brushes) with built-in motors have long been known. These nozzles generally have a high-speed rotating roller brush for tapping the carpet to excite dust deep in the carpet to be carried away by the suction air. In the electric ground brush, the roller brush is driven by the motor inside the nozzle, and the kinetic energy of the suction airflow is all used for sucking dust, and is electrically brushed on the carpet compared with the pneumatic brush that drives the turbine and then drives the roller brush by the suction airflow. The dust removal efficiency is higher. Electric floor brushes are commonly used in AC vacuum cleaners. Because the suction of the AC vacuum cleaner is relatively strong, the nozzle is firmly attached to the surface of the carpet, causing great resistance to movement. In order to reduce the movement resistance, it is convenient for the user to easily move the nozzle on the surface of the carpet, and the bottom surface or the top surface of the nozzles should have a leak hole, so that the nozzle can be tightly pressed during the process of the user pulling and pulling the nozzle for dust removal. The surface of the carpet can be pushed without much effort.

With the development of lithium battery technology, rechargeable DC vacuum cleaners are becoming more and more popular. The DC cleaner is small in size, light in weight, easy to operate, and low in noise. Although the suction is relatively low, it is enough to clean the dust on the hard floor. When the DC vacuum cleaner is used to clean the mattress, sofa and other fabric furniture and small-area short-haired carpet, the dust-absorbing efficiency can be significantly improved by the built-in motor nozzle (electric brush), because the motor in the nozzle can drive the roller brush. The deep dust of the fabric furniture and the short-haired carpet is excited, so that the DC vacuum cleaner can suck the dust away with a small suction force.

Since the suction of the DC cleaner is relatively small, the coupling force of the built-in motor nozzle (electric brush) to the surface to be cleaned is also relatively small. When the user pushes and pulls the nozzle on the surface to be cleaned, as the distance between the nozzle and the user's body changes, the angle between the pushing force applied by the user to the nozzle and the body of the nozzle also changes, in front of the nozzle or The rear may be detached from the surface to be cleaned, resulting in reduced dust removal capacity.

CN201010123562.7 Dyson discloses a vacuum cleaner nozzle with a built-in motor, the bottom plate being rotatable relative to the head (ie, the nozzle body). When the user combines such a nozzle with a DC cleaner for a horizontally smooth surface, the angle between the nozzle tip and the horizontal smooth surface gradually increases as the nozzle gradually approaches the user's body during the pullback vacuuming process. Because the nozzle head can rotate relative to the bottom plate, the rear of the nozzle bottom plate does not tilt away from the horizontal smooth surface, but can always be in close contact with the horizontal smooth surface.

However, in the structure disclosed by Dyson in CN201010123562.7, the nozzle bottom plate and the nozzle body (head) are frictionally engaged by a large-area curved surface at the front and the rear to realize rotation and sealing, and arcs combined with each other. The surface must be able to rotate flexibly, and the sealing must be ensured during the rotation process. This requires high precision of the matching of the plastic parts, and is difficult to process. It is difficult to ensure the rotational flexibility and airtightness of the product at the same time in mass production.

Summary of the invention

An object of the present invention is to provide a vacuum cleaner nozzle that can solve the above problems and a vacuum cleaner including the vacuum cleaner nozzle.

In order to achieve the above object, the present invention adopts the following structure:

The invention provides a vacuum cleaner nozzle, which is matched with a duct connecting portion of a dust suction device for vacuuming from a surface to be cleaned, and has such a feature, comprising: a connecting pipe, one end is connected with the air duct connecting portion; a nozzle body having an outlet portion corresponding to the duct connecting portion and rotatably mounted to the other end of the connecting pipe, a hollow receiving portion located in front of the outlet portion, and a dust suction port portion disposed on the hollow receiving portion and facing the surface to be cleaned The dust suction port has a support surface in contact with the surface to be cleaned; the hose is located between the connecting pipe and the outlet portion, and the connecting pipe is in sealing communication with the outlet portion; the elastic reset member is respectively opposite to the connecting pipe and the nozzle body Connected to maintain an angle between the axis of the connecting pipe leading to the air duct connecting portion and the supporting surface at a predetermined angle, wherein when the vacuum cleaner nozzle is in a free state, the connecting tube is in contact with the nozzle body, The angle between the axis of the connecting pipe leading to the air duct connecting portion and the supporting surface is minimum, and when the vacuum cleaner nozzle is in the working state, the elastic returning member can prevent the connecting pipe from leading to the The angle between the axis of the duct and the support surface of the connecting portion increases.

Further, the vacuum cleaner nozzle according to the present invention may have such a feature that the hollow housing portion, the dust suction port portion, and the outlet portion are integrally formed, so that airtightness can be better ensured.

In addition, the vacuum cleaner nozzle according to the present invention may further have a feature that a bottom portion of the front end of the connecting pipe is provided with a lower opening, and a supporting mechanism is provided between the connecting pipe and the dust collecting port portion, and the vacuum cleaner nozzle is free on a horizontal surface. In the state, the edge of the lower opening abuts against the supporting mechanism, and the angle between the axis of the connecting pipe leading to the air duct connecting portion and the surface to be cleaned is greater than zero, and the elasticity is when the connecting pipe rotates away from the supporting mechanism The reset member drives the support mechanism to reset the connecting pipe.

In addition, the vacuum cleaner nozzle according to the present invention may further have a feature that the elastic returning member is a torsion spring, and the torsion spring has a first twisting arm mounted on the connecting pipe and synchronously rotating with the connecting pipe, and a second twisting arm that the nozzle body abuts.

In addition, the vacuum cleaner nozzle according to the present invention may further have a feature that the hollow receiving portion includes: a hollow casing and a mounting unit, and the mounting unit is fixed on the hollow casing, and includes: a mounting ear on the mounting ear. The mounting hole and the resetting rib fixed in the mounting ear, the resetting rib is disposed opposite to the outer surface of the hollow casing, and is configured to form a clamping abutment for clamping the second twisting arm and abutting the second twisting arm In part, the connecting pipe has a mounting post rotatably disposed in the mounting hole, and the mounting post is provided with a mounting groove for mounting the first twist arm.

Further, the cleaner nozzle according to the present invention may further include: a brush member rotatably mounted in the hollow housing; and a motor that drives the roller member to rotate.

In addition, the vacuum cleaner nozzle according to the present invention may further have a feature that the nozzle body further includes a motor mounting portion disposed on a rear side of the hollow housing portion for accommodating the mounting motor; and the dust suction port portion includes: formed in the hollow a dust suction port on the accommodating portion and a front bottom plate and a rear bottom plate disposed at the periphery of the dust suction port, and the motor mounting portion is located above the rear bottom plate.

In addition, the vacuum cleaner nozzle according to the present invention may further have a feature that the motor mounting portion is used as a supporting mechanism, and the shape of the lower opening corresponds to the shape of the motor mounting portion, when the edge of the lower opening is in contact with the motor mounting portion, The elastic return member exerts the least elastic force applied to the nozzle body.

In addition, the vacuum cleaner nozzle according to the present invention may further have a feature that when the nozzle body is located on a horizontal surface and the edge of the lower opening abuts against the motor mounting portion, the connection is made. The angle between the axis of the pipe leading to the duct connection and the horizontal plane is a predetermined angle, and the predetermined angle is 15 to 45, preferably 20 .

Further, the present invention further provides a vacuum cleaner, comprising: a vacuum cleaner body having a duct connecting portion; and a vacuum cleaner nozzle matched with the air duct connecting portion, wherein the vacuum cleaner nozzle is <structure 1 >The vacuum cleaner nozzle described in .

The role and effect of the invention

According to the vacuum cleaner nozzle and the vacuum cleaner of the present invention, since the connecting pipe and the nozzle body are rotatably connected, the hose connects the nozzle body and the connecting pipe, and the connecting pipe and the outlet portion are sealed and communicated. It can effectively prevent air leakage, and the flexibility of the hose itself can ensure the flexibility of relative rotation between the connecting pipe and the nozzle body. When the vacuum cleaner nozzle is used to vacuum the smooth surface and the nozzle is away from the user's body, the connection is made. The angle between the tube and the nozzle body may be a minimum angle. When the nozzle is close to the user's body, the angle between the connecting tube and the nozzle body can be appropriately increased. At this time, the elastic return member does not generate excessive elasticity, and the suction The back of the mouth will not be lifted, and the mouthpiece surface will conform to the smooth plane. Moreover, compared with the sealing difficulty of large-area friction fit, the manufacturing process using the hose seal is relatively simple, and it is easy to ensure the rotation flexibility and the sealing performance at the same time in mass production and production.

Further, since an elastic returning member is provided between the connecting pipe and the nozzle main body, and the elastic returning member abuts against the connecting pipe and the nozzle main body, respectively, an elastic force can be applied to the suction nozzle main body to prevent the suction nozzle from being opposed by the vacuum cleaner When the surface cleaning of the mattress is in the process of pulling back, the surface of the mattress is excessively damaged by the wrinkles at the rear of the vacuum cleaner nozzle, so that the front of the vacuum cleaner nozzle is lifted upward. Because the elastic returning member urges the nozzle body to close to the connecting tube and then the front of the nozzle body to sink, the user does not need to actively change the angle of the arm, so that the supporting surface continues to adhere to the surface of the mattress, thereby ensuring the sheet. Such as the soft surface of the vacuum effect.

DRAWINGS

Figure 1 is an axial view of the vacuum cleaner nozzle of the embodiment of the present invention as seen from the front;

Figure 2 is a perspective view of the vacuum cleaner nozzle of the embodiment of the present invention as seen from the bottom;

Figure 3 is an exploded perspective view of the vacuum cleaner nozzle of the embodiment of the present invention;

Figure 4 is an exploded perspective view of the vacuum cleaner nozzle of the embodiment of the present invention;

Figure 5 is a plan view of the vacuum cleaner nozzle in the embodiment of the present invention;

Figure 6 is a cross-sectional view taken along line A-A of Figure 5;

Figure 7 is an enlarged plan view showing a part of the structure of the vacuum cleaner nozzle of the embodiment of the present invention, wherein

Fig. 7(a) is an enlarged view of a region I in Fig. 3, and Fig. 7(b) is an enlarged view of a region II in Fig. 4.

detailed description

The vacuum cleaner nozzle and the vacuum cleaner according to the present invention will be described in detail below with reference to the drawings.

The vacuum cleaner includes a vacuum cleaner nozzle 10 shown in Fig. 1 and a duct connecting portion (not shown) and a dust collecting portion (i.e., a cleaner main unit). The vacuum cleaner nozzle 10 is matched with the air duct connecting portion for sucking off dust, hair and the like on the surface to be cleaned. The dust suction portion supplies suction to the vacuum cleaner nozzle 10, adsorbs dust, hair, and the like cleaned by the vacuum cleaner nozzle 10, and accommodates the object to be cleaned as a dust collector dust collecting mechanism.

As shown in FIG. 1 to FIG. 3, the vacuum cleaner nozzle 10 is matched with the air duct connecting portion of the vacuum cleaner (not shown) for dust removal of the cleaning surface, and includes: the nozzle body 11, the roller brush member 12, and the driving. The member 13, the connecting tube 14, the elastic returning member 15, and the hose 16.

The nozzle body 11 has a hollow housing portion 111, a dust suction port portion 112, an outlet portion 113, a motor mounting portion 114, and a cover mounting portion 115.

As shown in FIGS. 3 and 4, the hollow housing portion 111 includes a hollow housing 111-1 and a mounting unit 111-2. The inside of the hollow casing 111-1 is a cylindrical cavity for accommodating the installation roller member 12, which is integrally formed: a left side plate 111-1a, a right side plate 111-1b, and a left side hole 111- 1c, a right hole 111-1d, and a hollow positioning cylinder 111-1e.

The mounting unit 111-2 is fixed to the hollow housing 111-1 and includes an integrally formed: The left mounting ear 111-2a, the right mounting ear 111-2b, the left mounting hole 111-2c, the right mounting hole 111-2d, and the reset rib 111-2e fixed in the right mounting ear 111-2b.

The dust suction port portion 112 is disposed on the hollow receiving portion 111 and faces the surface to be cleaned, and includes a dust suction port 112-1, a front bottom plate 112-2, and a rear bottom plate 112-3. The dust suction port 112-1 is formed on the hollow casing 111-1, and the front bottom plate 112-2 and the rear bottom plate 112-3 are disposed at the outer periphery of the dust suction port 112-1. The suction port portion 112 has a support surface that is in contact with the surface to be cleaned.

The outlet portion 113 is provided on the hollow housing portion 111 and corresponds to the duct connection portion.

In the present embodiment, the hollow housing portion 111, the dust suction port portion 112, and the outlet portion 113 are integrally formed, so that airtightness can be better ensured.

The motor mounting portion 114 is a hollow structure which is disposed on the rear side of the hollow housing portion 111 above the rear bottom plate 112-3 for accommodating the mounting motor.

The cover mounting portion 115 includes a right end cover 115-1, a left cover plate 115-2, a left ear cover plate 115-3, and a right ear cover plate 115-4.

The roller brush member 12 is rotatably mounted in the hollow housing portion 111 and comprises a cylindrical base body and a plurality of filaments planted on the base body.

As shown in FIG. 3, the driving member 13 is located on the outer side of the rear of the nozzle body 11, and on the left side of the connecting pipe 14, and includes: a motor 131, a timing belt 132, a pulley 133, a driving head 134, a left bearing 135, and a right bearing 136, and Drive bracket 137.

The motor 131 is mounted in the motor mounting portion 114, and the roller member 12 can be driven to rotate by the timing belt 132.

As shown in FIGS. 2 to 4, a right side hole 111-1d is provided in a middle portion of the right side plate 111-1b, a card slot is provided in the inside of the right side hole 111-1d, and a right bearing 136 is located inside the right end cover 115-1. The right bearing 136 is engaged with the steel shaft 121 on the right side of the roller brush member 12 through the right hole 111-1d, so that the right side of the roller brush member 12 can be rotated inside the right end cover 115-1; the outer side of the right end cover 115-1 is provided There is a switch slot 115-1a, and a buckle 115-1b is provided on the inner side; a card slot is provided in the inner side of the right side hole 111-1d on the right side plate 111-1b, and the left side of the right end cover 115-1 enters the right hole 111. After -1d and rotating in the clockwise direction, the buckle 115-1b can enter the card slot and closely cooperate with the card slot, and if necessary, the plate can be inserted by rotating the plate counterclockwise in the switch slot 115-1a. 115-1b is released from the card slot and the right end cap 115-1 is removed from the brush member 12 Take it out on the side.

As shown in FIG. 3, the left side hole 111-1c is disposed on the left side of the hollow casing 111-1, and the left end of the roller brush member 12 is fitted to the outer drive head 134 through the left side hole 111-1c. The inner hole of the left side of the roller brush member 12 is provided with spaced apart driven ribs 122 and the driven groove 123, respectively meshing with corresponding driving ribs and driving grooves on the driving head 134, so that the roller brush member 12 can receive the driving head 134 for transmission. The torque coming from it produces a turn.

The pulley 133 is disposed on the left side of the driving head 134, and the middle portion of the right side of the pulley 133 is coupled to the left side of the driving head 134 through the left bearing 135 through the rib groove structure, and then locked and reinforced by the screw 138.

The outer diameter of the left side of the driving head 134 is larger than the inner diameter of the bearing hole, and therefore, the driving head 134 does not slide through the bearing inner hole to the left side after being locked with the pulley 133.

The transmission bracket 137 is disposed between the driving head 134 and the pulley 133. The transmission bracket 137 is provided with a circular hole serving as a bearing chamber, the left bearing 135 is mounted therein, and the right side of the left bearing 135 is the driving head 134, and the left side of the left bearing 135 is The body of the pulley 133.

On the left side of the left side plate 111-1a, there are three hollow positioning cylinders 111-1e which are respectively fitted into the three hollow positioning cylinders 137-1 on the right side of the front side of the transmission bracket 137, and are integrally formed with the hollow casing 111-1. The left ends of the three hollow positioning cylinders 111-1e on the side plates 111-1a are flush with the left end faces of the transmission brackets 137 such that the three inner holes 111-1f of the hollow positioning cylinders 111-1e are exposed at the left end of the transmission bracket 137. On the surface. The rear of the transmission bracket 137 is fixed to the DC motor 131 by a screw 137-2, and the DC motor 131 is also pressed and positioned. A circular hole 137-3 is disposed in a middle portion of the rear of the transmission bracket 137, and a pulley 131-1 is disposed at a distal end of the rotating shaft of the motor 131. The pulley 131-1 is exposed through the circular hole 137-3 on the left side behind the transmission bracket 137. In parallel with the pulley 133 on the left side of the brush member 12, the timing belt 132 is simultaneously fitted around the pulley 131-1 of the motor 131 and the pulley 133 of the roller member 12, and is perpendicular to the rotation axes of the two pulleys, and the motor 131 is rotated. Thereafter, the timing belt 132 also drives the roller brush member 12 to rotate synchronously.

A wire (not shown) on the motor 131 enters the connecting tube 14 from the left mounting hole 111-2c, and reaches the rear of the connecting tube 14 along the outside of the hose 16, and is mounted on the pin holder 131-1 as shown in FIG. Two conductive pins 139-2 are connected, and are connected through two conductive pins 139-2 Pass the circuit on the main unit of the vacuum cleaner.

The right ear cover 115-4 is mounted on the right side of the right mounting hole 111-2d, and is tightly fitted by the snap structure and the right mounting hole 111-2d. The left side cover 115-2 is disposed on the left side of the transmission bracket 137 and the two pulleys, and three through holes 115-2a are disposed on the side wall of the left cover plate 115-2, and the three through holes 115-2a are respectively aligned with three The inner hole 111-1f of the hollow positioning cylinder 111-1e, three screws respectively penetrate the three hollow positioning cylinders 111-1e through the three through holes 115-2a, and the left cover plate 115-2 and the nozzle body 11 locking, the left ear cover 115-3 behind the transmission bracket 137 is a part of the left cover 115-2, and as the left cover 115-2 and the nozzle body 11 are locked together, the left ear cover 115- 3 is also tightly fitted to the left mounting hole 111-2c at the same time, and the pulley 133, the pulley 131-1, the timing belt 132, the motor 131, and the wires are all covered to prevent them from being exposed.

As shown in FIG. 3 and FIG. 4, in the present embodiment, the outer shape of the connecting pipe 14 is linear, one end faces the outlet portion 113 and is rotatably mounted on the hollow receiving portion 111, and the other end is connected to the air duct connecting portion. . The connecting tube 14 has a left leg 141, a right leg 142, a mounting post 143, a mounting groove 144, an upper opening 145, and a lower opening 146. The shape of the connecting tube itself may not be a straight shape but an obtuse angle shape.

The left and

right legs

141, 142 are respectively disposed on the left and right sides of the front portion of the connecting tube 14, and are respectively installed in the left mounting hole 111-2c and the right mounting hole 111-2d, and are capable of being mounted relative to the left mounting ear 111-2a. And the right mounting ear 111-2b rotates about the axis X2.

As shown in FIG. 3, the upper opening 145 is disposed above the connecting pipe 14, such that the upper edge 147 of the connecting pipe 14 shown in FIGS. 1, 3 to 5 is located rearward of the axis X2; the lower opening 146 is disposed at the connecting pipe 14. Below, the lower edge 148 of the front portion of the connecting pipe 14 is located rearward of the axis X2, and the shape of the lower opening 146 corresponds to the shape of the motor mounting portion 114.

As shown in FIG. 6, when the nozzle is on a horizontal surface and the connecting tube 14 is rotated downward so that the lower edge 148 of the connecting tube 14 is in contact with the top of the motor mounting portion 114, the axis of the connecting tube 14 and the suction port 112-1 The angle A1 of the plane in which it is located reaches a predetermined angle, which may be any value in the range of 15° to 45°, preferably 20°; when the nozzle is on the horizontal surface and the connecting tube 14 is rotated upward to make the connecting tube 14 When the edge 147 is in contact with the top of the hollow casing 111-1, the angle A1 reaches a maximum. The connecting tube 14 and the bottom surface of the suction port The angle A1 can vary continuously between the maximum value and the predetermined angle.

The elastic returning member 15 is disposed between the connecting tube 14 and the nozzle body 11, and abuts against the connecting tube 14 and the nozzle body 11, respectively, for applying an elastic force to the nozzle body 11 and the connecting tube 14, respectively, to prevent the angle A1 is getting too big. In the present embodiment, the elastic returning member 15 is a torsion spring 15 having a first twisting arm 151 and a second twisting arm 152. The first twisting arm 151 is mounted on the connecting pipe 14 and synchronized with the connecting pipe 14. When rotated, the second twist arm 152 abuts against the nozzle body 11.

As shown in FIGS. 3, 4 and 7, in the connecting tube 14, the central portion of the right leg 142 protrudes rightward to form a mounting post 143, and the mounting post 143 is rotatably mounted in the right mounting hole 111-2d, and the mounting post 143 A mounting groove 144 is defined at one end of the right ear hole cover 115-4. The first torsion arm 151 of the torsion spring 15 is mounted in the mounting groove 144; the return rib 111-2e is opposed to the outer surface of the hollow casing 111-1, and collectively forms a clamping abutment for clamping the second torsion arm 152 The groove is such that the front side of the second twist arm 152 abuts against the outer surface of the hollow casing 111-1, and the rear side abuts against the reset rib 111-2e. Further, in order to prevent the second twist arm 152 from abutting from the clamp The groove slides to the right side, and the right side of the second twist arm 152 is pressed by the rib 115-4a located inside the right ear cover 115-4. Since the two twisting arms of the torsion spring 15 abut against the connecting tube 14 and the nozzle body 11, respectively, when the connecting tube 14 rotates relative to the nozzle body 11, the angle between the two twisting arms changes, and the twist The spring inside will generate an elastic force to prevent this angle from changing.

As shown in Figures 3, 4 and 6, when the nozzle is in the horizontal plane and the lower edge 148 of the connecting tube 14 is in contact with the motor mounting portion 114, the angle A1 is minimized, and the corresponding elastic return member 15 applies to the nozzle body 11. The elastic force is minimal; when the upper edge 147 of the connecting tube 14 is in contact with the top of the hollow casing 111-1, the angle A1 is maximized, and the elastic force applied to the nozzle body 11 by the corresponding elastic returning member 15 is also maximized. This spring force causes the connecting pipe 14 and the nozzle body 11 to approach each other, and the angle A2 becomes small until it becomes A1 so that the connecting pipe 14 will be supported by the nozzle body 11.

The linear hose 16 is disposed between the connecting pipe 14 and the outlet portion 113, and the connecting pipe 14 is in sealing communication with the outlet portion 113. The nozzle body 11 and the upper edge 147 of the connecting tube 14 together define an upper opening 145, located above the hose 16; the nozzle body 11 and the connection The lower edge 148 of the tube 14 collectively encloses a lower opening 146 located below the hose 16.

As shown in Figs. 3, 4 and 6, the outer side of the front end of the hose 16 is provided with a collar 161, and the hose 16 is mounted in the outlet portion 113 on the rear side of the nozzle body 11 through the collar 161, and the inner diameter of the outlet portion 113 is not More than 35 mm, which is much smaller than the left and right width of the inner cavity of the nozzle body 11, the outlet portion 113 and the collar 161 are tightly fitted, and the front and rear depth of the fitting is about 30 mm, and the outlet portion 113 is engaged with the collar 161, and the outlet is The portion 113 and the collar 161 remain relatively stationary, such a configuration that there is substantially no air leakage in front of the hose 16. The hose 16 itself is integrally formed from a flexible plastic material and does not leak. The rear of the hose 16 extends in the direction of the suction air flow. As shown in Fig. 6, the outer wall of the end of the hose 16 closely fits with the inner hole of the connecting pipe 14 and is relatively stationary, and does not leak.

In the present embodiment, as shown in FIG. 6, when the cleaner nozzle 10 is in a free state in which no external force is applied, the lower edge 148 of the linear connecting pipe 14 abuts against the rear of the nozzle body 11, so that the axis of the connecting pipe 14 is The angle A1 of the bottom surface of the mouthpiece is a predetermined angle.

When the connecting pipe 14 is raised by an external force during the movement, for example, in the pull-back vacuuming stroke, the vacuum cleaner nozzle 10 is pulled closer to the user's body from the far side of the mattress surface, the vacuum cleaner nozzle 10 and the user The sheet may be wrinkled to prevent the nozzle from pulling back. Further pulling the connecting tube 14 causes the front bottom plate 112-2 of the nozzle body 11 to generate wrinkles formed by the sheet ridge as a fulcrum in the clockwise direction from FIG. The tendency of the bed surface to tilt up (the angle A1 between the connecting pipe and the suction port portion will increase), in which case the torsion spring 15 is compressed and generates an elastic force, so that the rear bottom plate 112-3 passes over the bed sheet. The wrinkles on the upper side are close to the connecting pipe 14, and the dust suction port 112-1 continues to adhere to the bed surface to maintain an optimum dust collecting effect.

The suction force of the vacuum cleaner nozzle and the surface to be cleaned is not very large. When the smooth surface is cleaned, since the supporting surface of the suction opening portion 112 is in full contact with the smooth surface to be cleaned, it is closely fitted, and when the user pulls the suction nozzle farthest from the body, the connecting tube and the supporting surface The angle between the two becomes large, and the elastic force of the torsion spring is insufficient to overcome the gravity and suction of the nozzle. Therefore, as the nozzle is brought closer to the user's body, the connecting tube leads between the axis of the air duct connection and the support surface. The angle can be appropriately increased, and the nozzle can be kept in conformity with the smooth surface to be cleaned, and it is not easy to separate from the smooth surface to be cleaned.

When the vacuum cleaner nozzle is used for a fabric soft surface such as a mattress, since the soft surface of the fabric has fluff, an air gap exists between the support surface of the dust suction port portion 112 and the soft surface of the fabric. For vacuum cleaners that use AC power, these air gaps are negligible, and strong suction forces the soft surface tightly against the support surface of the suction port 112 to ensure a clean effect. However, since the suction of the vacuum cleaner is inherently weak, these air gaps significantly reduce the tightness of the nozzle body and the soft surface, so that the support surface of the lower portion of the nozzle is relatively easy to separate from the soft surface to be cleaned. When the user pushes the vacuum cleaner nozzle away from the body on a soft surface, since the joint of the connecting tube and the nozzle body is located behind the dust suction port portion 112, the thrust presses the vacuum cleaner nozzle against the soft surface. When the user pulls the vacuum cleaner nozzle away from the body, the soft surface of the fabric on the rear frame of the nozzle may wrinkle, causing the front side of the vacuum cleaner nozzle to tilt upward, and the connecting tube leads to the axis of the air duct connection. The angle A1 between the support surfaces of the dust suction port portion 112 becomes large, and the torsion spring generates an elastic force to prevent the A1 from becoming large, and strives to maintain the A1 at an initial predetermined angle, that is, to keep the connecting pipe and the nozzle body in contact, thus The rear frame of the nozzle body passes over the wrinkles generated on the soft surface of the fabric, the front frame of the nozzle body sinks, the dust suction port 112 returns to the state of the bed surface, and the support surface of the bottom of the dust suction port 112 follows the bed. The fluff of the surface of the crucible contacts, the fluff located in the dust suction port portion 112 rises on the surface of the mattress, and the airflow passes between the fluffs and brings the dust on the fluff into the inside of the nozzle.

The role and effect of the embodiment

According to the vacuum cleaner nozzle and the vacuum cleaner of the present embodiment, since the connecting pipe and the nozzle body are connected in a rotatable manner, the hose connects the nozzle body and the connecting pipe, and the connecting pipe and the outlet portion are in sealing communication. The utility model can effectively prevent air leakage, and the flexibility of the hose itself can ensure the flexibility of relative rotation between the connecting pipe and the nozzle body. When the vacuum cleaner nozzle is used to suck the smooth surface and the nozzle is away from the user body, The angle between the connecting tube and the nozzle body may be a minimum angle. When the nozzle is close to the user's body, the angle between the connecting tube and the nozzle body can be appropriately increased, and the elastic returning member does not generate excessive elastic force. The back of the nozzle will not be lifted, and the mouthpiece surface can be kept in close contact with the smooth plane. Moreover, compared with the sealing difficulty of large-area friction fit, the manufacturing process using the hose seal is relatively simple, in batch It is also easy to ensure rotational flexibility and sealing performance during production and production.

Of course, the vacuum cleaner nozzle and the dust suction device according to the present invention are not limited to the structure in the above embodiment. The above is only a basic description of the present invention, and any equivalent transformation made according to the technical solution of the present invention should fall within the protection scope of the present invention.

In the vacuum cleaner nozzle of the present invention, the elastic force can be increased by thickening the torsion spring according to the actual situation; in addition, the roller can be added behind the rear bottom plate of the nozzle body, and the lower edge of the roller and the plane of the suction suction port are It is basically flush, avoiding the backing plate from sinking excessively on the surface of the mattress, and it will not increase the pull-back resistance.

Claims

The utility model relates to a vacuum cleaner nozzle which is matched with the air duct connection part of the vacuum cleaner for vacuuming the surface to be cleaned, and is characterized in that it comprises:

a connecting pipe, one end of which is in communication with the air duct connecting portion;

a nozzle body having an outlet portion corresponding to the duct connecting portion and rotatably mounted to the other end of the connecting pipe, a hollow receiving portion located in front of the outlet portion, and being disposed on the hollow receiving portion and a dust suction port portion facing the surface to be cleaned, the dust suction port portion having a support surface in contact with the surface to be cleaned;

a hose, located between the connecting pipe and the outlet portion, sealingly connecting the connecting pipe and the outlet portion;

And an elastic returning member abutting the connecting tube and the nozzle body respectively for maintaining an angle between an axis of the connecting tube leading to the air duct connecting portion and the supporting surface at a predetermined angle.
A vacuum cleaner nozzle according to claim 1, wherein:

Wherein, the hollow receiving portion, the dust suction port portion and the outlet portion are integrally formed.
A vacuum cleaner nozzle according to claim 1, wherein:

Wherein the bottom of the front end of the connecting pipe is provided with a lower opening, and a supporting mechanism is arranged between the connecting pipe and the dust collecting mouth portion.

When the vacuum cleaner nozzle is in a free state on a horizontal surface, the edge of the lower opening abuts the support mechanism, and the connecting pipe leads to the axis of the air duct connection portion and the surface to be cleaned The angle is greater than zero,

The elastic return member drives the support mechanism to reset the connecting tube when the connecting tube rotates in a direction away from the supporting mechanism.
A vacuum cleaner nozzle according to claim 3, wherein:

Wherein the elastic limiting member is a torsion spring, the torsion spring has a first torsion arm mounted on the connecting tube and synchronously rotating with the connecting tube, and a second twist abutting the nozzle body arm.
A vacuum cleaner nozzle according to claim 4, wherein:

Wherein the hollow receiving portion comprises: a hollow housing and a mounting unit,

The mounting unit is fixed on the hollow casing, and includes: a mounting ear, a mounting hole on the mounting ear, and a resetting rib fixed in the mounting ear,

The resetting rib is disposed opposite to an outer surface of the hollow casing, and cooperates to form a clamping abutting portion that clamps the second twisting arm and abuts the second twisting arm,

The connecting pipe has a mounting post rotatably disposed in the mounting hole, and the mounting post is provided with a mounting groove for mounting the first twist arm.
The vacuum cleaner nozzle according to claim 4, further comprising:

a roller brush member rotatably mounted in the hollow housing;

a motor that drives the roller brush member to rotate.
A vacuum cleaner nozzle according to claim 6, wherein:

Wherein the nozzle body further includes a motor mounting portion disposed on a rear side of the hollow receiving portion for accommodating the motor,

The dust suction port portion includes: a dust suction port formed on the hollow receiving portion, and a front bottom plate and a rear bottom plate disposed at a periphery of the dust suction port,

The motor mounting portion is located above the rear floor.
A vacuum cleaner nozzle according to claim 7, wherein:

Wherein the motor mounting portion is used as the support mechanism,

The shape of the lower opening corresponds to the shape of the motor mounting portion,

The elastic returning member applies a minimum elastic force to the nozzle body when the edge of the lower opening comes into contact with the motor mounting portion.
A vacuum cleaner nozzle according to claim 8, wherein:

Wherein, when the edge of the lower opening abuts the motor mounting portion, the pre- The angle is from 15° to 45°.
The utility model relates to a vacuum cleaner nozzle which is matched with the air duct connection part of the vacuum cleaner for vacuuming the surface to be cleaned, and is characterized in that it comprises:

a connecting pipe, one end of which is in communication with the air duct connecting portion;

a nozzle body having an outlet portion corresponding to the duct connecting portion and rotatably mounted to the other end of the connecting pipe, a hollow receiving portion located in front of the outlet portion, and being disposed on the hollow receiving portion and a dust suction port portion facing the surface to be cleaned, the dust suction port portion having a support surface in contact with the surface to be cleaned;

a hose, located between the connecting pipe and the outlet portion, sealingly connecting the connecting pipe and the outlet portion;

An elastic returning member is located between the connecting tube and the nozzle body for obstructing a change in an angle between an axis of the connecting tube leading to the air duct connecting portion and the supporting surface.
A vacuum cleaner characterized by comprising:

a vacuum cleaner body having a duct connection; and

a vacuum cleaner nozzle matched with the air duct connection portion,

The vacuum cleaner nozzle is the vacuum cleaner nozzle according to any one of claims 1 to 10.