TW201633989A - Nozzle - Google Patents

Abstract

This invention relates to a vacuum cleaner nozzle for sucking up dirt and/or dust from a floor to be cleaned by using suction airflow, comprising a housing, a suction room in the housing, a suction channel for guiding the suction airflow into the suction room, and a suction opening forming the bottom opening of the suction room; wherein a bottom support for supporting the housing is arranged, and a support member is fixed on the bottom support such that the bottom support can provide support via the support member in respect to the floor. According to the present invention, the support member is connected with the bottom support via an elastic member for applying elasticity, when a force exceeding a predetermined value is imposed downwardly onto the housing, the support member resists the elastic member to elastically move upward to the bottom support. Therefore, the disclosed provides a nozzle having a bottom support member for supporting the nozzle on the floor, wherein the support member can be prevented from breaking within a large force range imposed onto the housing.

Description

Nozzle

The invention relates to a suction nozzle for a vacuum cleaner for absorbing dust and/or dust of a floor to be cleaned by an air suction, having an outer casing, a suction chamber formed in the outer casing, and a passage for guiding the suction airflow into the suction chamber The suction passage, the suction port constituting the bottom side opening of the suction chamber, in which the chassis of the support case is disposed and the support member is fixed to the chassis, and the chassis can be supported relative to the floor by the support member.

The nozzle of the type mentioned here is moved by the user who cleans the floor, usually in the forward or backward direction on the floor to be cleaned, wherein the nozzle is usually standing on the floor with the undercarriage of the underside and the support part . The bottom side undercarriage device that allows the nozzle to stand on the floor can be, on the one hand, a wheel, usually a plurality of wheels, which roll on the floor by wheels to cause the nozzle to travel on the floor. It is also known to replace that the chassis has a sliding surface on the bottom side, and the suction nozzle stands on the floor with a sliding surface and can be displaced on the sliding surface. For example, in order to make the nozzle in a predetermined direction relative to the floor, the nozzle of the type mentioned here also stands on the floor with the support member. It can therefore also be provided that the support member is not always supported relative to the floor but must be "activated" by the user of the nozzle. For example, it can be provided that the support member can be extended from the chassis by a switch, such as a foot switch. Out.

The nozzle of the type mentioned here is moved by the user who cleans the floor, usually in the forward or backward direction on the floor to be cleaned, wherein the nozzle is usually standing on the floor with the undercarriage of the underside and the support part . The bottom side undercarriage device that allows the nozzle to stand on the floor can be, on the one hand, a wheel, usually a plurality of wheels, which roll on the floor by wheels to cause the nozzle to travel on the floor. It is also known to replace that the chassis has a sliding surface on the bottom side, and the suction nozzle stands on the floor with a sliding surface and can be displaced on the sliding surface. For example, in order to make the nozzle in a predetermined direction relative to the floor, the nozzle of the type mentioned here also stands on the floor with the support member. It can therefore also be provided that the support member is not always supported relative to the floor but must be "activated" by the user of the nozzle. For example, it can be provided that the support member can protrude from the chassis by means of a switch, for example a foot switch.

Taking this as a starting point, an object of the present invention is to provide a suction nozzle having a supporting member for supporting a chassis with respect to a floor supporting nozzle, wherein damage of the supporting member can be prevented in a range in which a large force is applied to the outer casing.

This object is achieved by the technical solution of claim 1, the preferred extension being set forth in the scope of the dependent patent application.

According to the invention, a suction nozzle for a vacuum cleaner for absorbing dust and/or dust of a floor to be cleaned by an air suction is provided, having a housing, a suction chamber formed in the housing, and a suction chamber for guiding the suction flow to the suction chamber a suction passage, a suction port constituting a bottom side opening of the suction chamber, wherein a chassis supporting the outer casing is disposed and the support member is fixed to the chassis, and the chassis can be supported relative to the floor by the support member, wherein the support member passes The elastic member that applies the elastic force is coupled to the chassis, and when a force exceeding a predetermined value is applied from the upper casing, the support member moves toward the chassis against the elastic force of the elastic member.

The key point of the invention is that the support member is fixed to the chassis elastically rather than rigidly. In this way, when a relatively high force is applied to the outer casing, the elastic member "buffers" the force that is thereby also transmitted to the support member, such that the support member can transfer this force due to the elastic member, ie through the support member The chassis moves.

The terminology chosen to describe the construction of the nozzle member is based, for example, on the position and orientation of the nozzle in the operation of the suction floor, how the nozzle absorbs the floor in the working state, wherein the nozzle is placed on the floor and on the floor. mobile. It is also pointed out that the chassis and the outer casing of the nozzle must not be separate components. In the context of the invention, the undercarriage and the outer casing of the nozzle are formed in one piece, in particular such that the underlying outer casing part of the floor forms the base of the suction nozzle, preferably partly or by means of other means, such as The wheels stand on the floor and the support members are also preferably fixed to the portion.

A variant of the main design of the invention consists in that the elastic component is connected to the support component and is shaped such that the support component can move upwards against the elastic force of the elastic component until the support component can no longer support the chassis relative to the floor. In other words, the nozzle is no longer placed on the support in this case. On the piece, it is only placed on the device placed on the bottom side of the chassis, such as the wheel or sliding surface already mentioned above. The force applied to the outer casing of the nozzle thus cannot continue to act on the support member, but is completely introduced into the floor by the chassis and its device, the nozzle standing on the floor. There is thus no need to worry about damage to the support member when a corresponding force is applied to the outer casing of the nozzle.

In the case where the support member is moved upwards, that is, toward the chassis or the chassis is moved in the direction of the floor, for example, it is possible to move the support member through the side of the chassis. The chassis preferably has an opening such that the support member can be moved into the chassis, preferably into the chassis. This saves space and on the other hand ensures that the user of the nozzle does not unintentionally step on the support member.

According to a preferred development of the invention it is also provided that the elastic member is elastically deformable, so that a reversible movement of the support member towards the chassis is obtained. In this way the support member is always moved towards the chassis as required, ie when a corresponding force is applied to the outer casing. When the force acting on the outer casing is removed, the support member is thus automatically moved back to its extended position, in which the support member supports the chassis relative to the floor. It is particularly preferred in this context that the elastic component has a spring and preferably has a spring made of spring steel, the elastic component particularly preferably having a coil spring, a coil spring, a torsion spring and/or a bending spring.

The support members can in principle be fixed to the chassis in different ways. According to a preferred development of the invention, the support member is fixed to the chassis by a fixing member mounted on the chassis in the holder and the fixing member and/or the holder have an elastic member which ensures the corresponding application to the outer casing of the suction nozzle Force The support member moves toward the chassis. This means in particular that the support part is fastened to the base frame by means of a fastening element which can be provided with a spring or can be completely formed as a spring by itself. For this purpose, an elastic support of the fastening element of the support part can be provided on the undercarriage instead or additionally, such that the support part moves towards the base frame by corresponding movement of the support of the support part of the support part.

The invention can in principle be used in practice for various support members by means of which the suction nozzles of the vacuum cleaner can be supported relative to the floor. It is also preferred that the support member has a support wheel or a support roller that can roll on the floor. The support wheel or the support roller ensures a higher level of comfort when the nozzle moves over the floor than a support member having only a sliding surface and supporting the sliding surface relative to the floor.

In principle, it is possible to provide a support part that always projects out of the chassis and always supports the chassis relative to the floor. Preferably the support member can extend from the chassis and retract into the chassis. This means that the support member is "activated" when it is actually necessary, that is, it protrudes from the chassis. This reduces the wear of the support member and in addition provides another mode of operation without the support member. According to a preferred development of the invention, in order to extend the support member from the chassis and retract into the chassis, a support member drive is provided between the chassis and the support member. Here, an elastic member is preferably provided between the chassis and the support member or between the support member driver and the support member. Furthermore, the support member can be automatically extended or retracted or/and dominated by the user of the nozzle.

1‧‧‧ nozzle

2‧‧‧floor

3‧‧‧ Shell

4‧‧‧Inhalation room

5‧‧‧Inhalation

6‧‧‧Inhalation channel

7‧‧‧ Chassis

8‧‧‧Support parts

9‧‧‧Flexible parts

10‧‧‧ bristles

11‧‧‧Connector

12‧‧‧Rotating arm

13‧‧‧Connector arm

14‧‧‧Support

F‧‧‧ force

S‧‧‧Spiral flow

In the following, the detailed description of the preferred embodiment of the invention will be explained in detail by means of the drawings The invention is described.

1a, b shows a schematic view of a suction nozzle according to a preferred embodiment of the present invention, which is respectively a state of no load of the outer casing or a state of applying force from the upper casing, 2a, b, c are schematic views showing a nozzle according to a second preferred embodiment of the present invention, according to which a support member capable of extending from a chassis is provided, respectively, in which the support member is retracted The state, the state in which the unsupported support member is extended, and the state in which the support member is extended when a corresponding force is applied to the outer casing, and FIGS. 3a, b schematically show the nozzle according to the third preferred embodiment of the present invention. According to this embodiment, a support member elastically mounted on the chassis of the suction nozzle is provided, which is also in a no-load or load state, respectively.

A nozzle 1 of a vacuum cleaner according to a first preferred embodiment of the invention is shown schematically in Figure 1 in a schematic view. The suction nozzle 1 has a casing 3, a suction chamber 4 formed in the casing 3, a suction passage 6 for guiding the suction flow S indicated by an arrow into the suction chamber 4, and a suction port 5 constituted by an opening of the suction chamber 4. The opening faces the floor 2, and the nozzle 1 stands on the floor. The suction nozzle 1 also has a chassis 7 that supports the outer casing 3. Here, the outer casing 3 and the underframe 7 are integrally formed, so that the chassis 7 is formed by the area of the outer casing 3, which faces the floor 2 and supports a plurality of devices, and the suction nozzle 1 stands on the floor 2 with these means. These devices are on the one hand forward or backward adjacent to the suction port 5 The bristles 10. Furthermore, a support part 8 formed as a support wheel is provided, in which the suction nozzle 1 is supported on the floor 2 in a region behind it.

According to the above-described first preferred embodiment of the present invention, the support member 8 is fixed to the chassis 7 by the elastic member 9 molded into a metal coil spring or a coil spring. Here, the elastic member 9 is dimensioned such that, in the state shown in Fig. 1a, wherein the support member 8 has to withstand only the weight of the nozzle 1 and no additional force is applied, the support member 8 extends downward from the chassis 7. Out, the chassis 7 is thus spaced from the floor there. In the middle of the front region of the nozzle 1, the chassis is spaced from the floor 2, i.e. the bristles 10 have a certain rigidity so that the overall mouthpiece is unloaded, i.e., without applying additional force to the casing 3. The upper side is supported on the bristles 10 and on the other hand is supported on the support member 8.

Figure 1b shows a state in which the force F indicated by the arrow is applied to the outer casing 3 from above, thus pressing the bristles 10 such that the suction nozzle 1 is closer to the floor 2 with its chassis 7. The support member 8 is connected to the chassis 7 of the suction nozzle 1 via the elastic member 9, and the support member 8 also moves upward toward the chassis 7 due to the elastic member 9, thereby entering the outer casing 3. In this way, the support member 8 does not have to bear the force F by itself. The support member 8 can shift this force F by moving upward against the elastic force of the elastic member 9 into the outer casing 3. Damage to the support member 8 or the device can thus be avoided, by which the support member is attached to the chassis 7 of the suction nozzle 1.

Figures 1a and 1b show a support member 8 extending continuously downward from the chassis 7 at least in the unloaded state of the nozzle 1, while Figures 2a, 2b and 2c show the present invention. Embodiment, wherein the nozzle has a branch The support member 8 is extendable from the chassis 7 and can be retracted back to the chassis. Further, the support member 8 is fixed to the chassis 7 of the suction nozzle 1 by a joint device 11, and the joint device 11 has a rotating arm 12 on one side and an elastic member 9 on the other side. From the joint device 11, starting from the situation shown in Fig. 2a (the support member 8 is retracted and thus completely inside the outer casing 3), the support member 8 is extended, as shown in Fig. 2b, so that the suction nozzle 1 is behind Supported in the area relative to the floor 2.

In addition to the rigid swivel arm 12 , the joint device 11 is also provided with a spring element 9 , which is likewise formed as a coil spring or a coil spring, in which case the effect as shown in FIG. 2 c can also be achieved, that is, from the top to the outer casing 3 . The support member 8 can be moved upward when the force F is applied and moved into the outer casing 3 in the direction toward the chassis 7. As already explained, it is possible to prevent an excessive force from being applied to the support member 8 or the joint device 11, and the support device is fixed to the chassis 7 by the joint device, so that there is no fear of damage of the support member 8 or other means connected to the support member 8.

Finally, Figures 3a and 3b show a suction nozzle 1 according to a third preferred embodiment of the invention, wherein the support member 8 formed here as a support wheel is resiliently mounted on the chassis 7. Here, the support device 8 is connected to the elastic support 14 by two rigid joint arms 13, which are fixed to the chassis 7 on its side. The effect thus obtained corresponds to the previous description of the nozzle 1 according to the first or second preferred embodiment of the invention: if a force F is applied to the outer casing 3, by compressing the spring provided in the elastic abutment 14 The support member 8 is moved upward into the outer casing 3 such that the force F does not fully act on the support member 8, whereby damage of the support member 8 can be avoided.

2‧‧‧floor

3‧‧‧ Shell

4‧‧‧Inhalation room

5‧‧‧Inhalation

6‧‧‧Inhalation channel

7‧‧‧ Chassis

8‧‧‧Support parts

9‧‧‧Flexible parts

10‧‧‧ bristles

F‧‧‧ force

S‧‧‧Spiral flow

Claims (10)

a suction nozzle for a vacuum cleaner for absorbing dust and/or dust of a floor to be cleaned by an air suction, having an outer casing, a suction chamber formed in the outer casing, and a passage for guiding the suction airflow a suction passage in the suction chamber, a suction port constituting a bottom side opening of the suction chamber, wherein a chassis supporting the outer casing is provided and a support member is fixed to the chassis, the chassis being movable relative to the support member a floor support, characterized in that the support member is coupled to the chassis by an elastic member that applies an elastic force, and the support member resists the elastic force of the elastic member when a force exceeding a predetermined value is applied from the upper casing to the outer casing Move upward toward the chassis. A nozzle according to claim 1, wherein the elastic member is coupled to the support member and shaped such that the support member can move upward against the elastic force of the elastic member until the support member does not The chassis can then be supported relative to the floor. A nozzle according to claim 1 or 2, characterized in that the chassis has an opening such that the support member can be moved into the chassis, preferably completely into the chassis. A nozzle according to any of the preceding claims, wherein the elastic member is elastically deformable, such that reversible movement of the support member toward the chassis is obtained. A nozzle according to any of the preceding claims, characterized in that the elastic member has a spring, preferably made of spring steel, particularly preferably a coil spring, a coil spring, a torsion spring and/or a bending spring. A nozzle according to any of the preceding claims, characterized in that The support member is fixed to the chassis by a fixing member mounted on the chassis in the holder and the holder and/or the holder have an elastic member. A nozzle according to any of the preceding claims, wherein the support member has a support wheel or a support roller that can roll on the floor. A nozzle according to any of the preceding claims, wherein the support member is extendable from the chassis and retracted into the chassis. A nozzle according to claim 8, characterized in that, in order to extend the support member from the chassis and retract into the chassis, a space is provided between the chassis and the support member Support component drive. A nozzle according to any one of the preceding claims, characterized in that the elastic member is provided between the chassis and the support member driver or between the support member driver and the support member.