Portable dust collector

Abstract

The invention relates to a portable vacuum cleaner (1) comprising a housing (2), a strap (3) for carrying the vacuum cleaner (1), and a first strap winder (4) arranged on the housing (2) for winding the strap (3). The strap (3) is connected to the housing (2), and a first end of the strap (3) is fixed to the first strap winder (4).

Description

Technical Field

[0001] The invention relates to a portable vacuum cleaner having a shoulder strap for carrying the vacuum cleaner. Background Art

[0002] Conventional vacuum cleaners with rollers standing on the floor are usually moved when in use by the user pulling a suction tube or a suction hose. This can cause problems when cleaning hard-to-reach areas. Therefore, vacuum cleaners with mechanisms for carrying the vacuum cleaner without the user having to use their hands have been developed. Such vacuum cleaners are referred to below as "portable vacuum cleaners".

[0003] The advantage of portable vacuum cleaners is that they are particularly suitable for cleaning hard-to-reach areas, such as stairs, car seats or confined spaces. They can be easily transported so that people can take them wherever they want to use them.

[0004] Portable vacuum cleaners are known in the prior art, which include a strap for carrying, for example, on the shoulder. In addition, mains-operated and battery-operated portable backpack vacuum cleaners are known, which can be carried comfortably like a backpack. Such portable vacuum cleaners can be carried by means of a strap or backpack system, wherein both hands of the user are free, for example, in order to operate the suction pipe or suction hose of the vacuum cleaner or the like.

[0005] A possible disadvantage of known portable vacuum cleaners is that the carrying system may make it difficult to operate such an apparatus as a floor vacuum cleaner, since, for example, a belt on the apparatus must be hung or removed. Removing the carrying system takes time and may be expensive or cumbersome. In addition, there is a risk that a detached belt or the like may be lost. Summary of the invention

[0006] Based on the prior art, the task of the present invention is to provide a portable vacuum cleaner that is improved relative to the prior art. In particular, the vacuum cleaner should have a shoulder strap that can be stored in the housing of the vacuum cleaner.

[0007] According to one aspect of the invention, there is provided a portable vacuum cleaner according to claim 1. Further aspects of the invention are subject matter of the dependent claims, the following description of embodiments and the drawings.

[0008] Advantageous embodiments and developments are the subject matter of the dependent claims and can be used individually or in combination with one another.

[0009] The portable vacuum cleaner according to the invention is equipped with a housing, a strap for carrying the vacuum cleaner and a first belt reel arranged on the housing for winding up the strap. In this case, the strap is fixed to the first belt reel at least at a first end of the strap and is thus also indirectly fixed to the housing of the vacuum cleaner. In this case, the other or second end of the strap can be directly fixed to the housing of the vacuum cleaner or connected to the housing of the portable vacuum cleaner by means of a so-called intermediate device, such as a second belt reel. In both cases, the strap is connected to the housing of the vacuum cleaner or is fixed to the housing.

[0010] According to a preferred embodiment, the vacuum cleaner comprises a second belt winder arranged on the housing for winding up the shoulder strap. Here, the second end of the shoulder strap is fixed to the second belt winder. In other words, the shoulder strap is wound up from both ends by the two belt winders respectively. The advantage of this embodiment is, on the one hand, that the shoulder strap can be wound up and unwound symmetrically from both ends. In particular, the user can grab the shoulder strap at the accessible section in the wound state and pull it out evenly without the shoulder strap passing through the user's hands. When loosening, rewinding can also be carried out particularly evenly. On the other hand, when using two belt winders, it is also ensured that the shoulder strap can be wound up when one of the two belt winders cannot fully fulfill its winding function for some reason.

[0011] The first belt winder and / or the second belt winder can preferably each have a clamping device for locking the harness. The clamping device can be configured so that in a first locked state the clamping device prevents the harness from being unrolled or wound up, and in a second state the harness is unrolled or wound up. Thus, similar to, for example, a seat belt in a passenger car, the unrolled length of the harness can be adjusted by first pulling it out and then fixing the unrolled length of the harness by a sudden pull.

[0012] The first belt reel has in particular a shaft for winding up the strap. The first end of the strap is preferably fixed to the shaft. Correspondingly, the second belt reel can have a shaft for winding up the strap, wherein the second end of the strap is fixed to the shaft. Preferably, the shaft is rotatably supported at both ends in the sleeve of the belt reel.

[0013] The first belt winder or the second belt winder preferably has a spring, respectively, which is operatively connected to the shaft. The spring preferably causes the automatic winding of the strap. In particular, the spring can be a helical spring, which is tensioned when the strap is unwound. When winding the strap, the energy stored in the spring can be used to rotate the shaft to wind the strap.

[0014] The first belt reel and / or the second belt reel preferably each have two springs, which are operatively connected to the shaft. The two springs are, for example, arranged concentrically around the two ends of the shaft and can cause the strap to be automatically reeled up. By arranging the springs concentrically at the ends of the shaft, a particularly stable and faultless function of the springs in cooperation with the shaft can be ensured.

[0015] The strap can preferably have a length of 40 cm to 160 cm. Particularly preferably, the length is 50 cm to 120 cm, in particular 100 cm, wherein these values ​​are merely exemplary.

[0016] In the rolled-up state, the shoulder strap can preferably be arranged completely in the housing. Thus, in the rolled-up state, the shoulder strap is protected from external influences and does not interfere with the normal use of the vacuum cleaner, for example when the vacuum cleaner is not being carried or when the vacuum cleaner is carried as usual by means of a handle arranged on the housing.

[0017] In an alternative embodiment, a section of the strap is laid flat on a part of the housing, such as a carrying handle arranged on the housing, in a rolled-up state. Here, a section of the strap can be approached from the outside to always enable the unfolding of the strap.

[0018] According to a preferred embodiment, the harness may have a loop for pulling and unfolding the harness. The loop may preferably be arranged at the center of the harness. In the wound state of the harness, the loop is preferably arranged outside the housing. The loop facilitates grabbing and pulling out or unfolding the harness.

[0019] According to a preferred embodiment, the vacuum cleaner can have two straps. Thus, the vacuum cleaner can be carried like a backpack, for example, which can make it easy to use the vacuum cleaner when vacuuming stairs.

[0020] The vacuum cleaner preferably comprises a carrying handle. The first belt winder and / or the second belt winder can preferably be arranged on the carrying handle. According to a preferred embodiment, the carrying strap can be completely located in a recess in the carrying handle or hidden in a recess in the carrying handle in the wound state. This makes it easier to use the vacuum cleaner, because the user of the vacuum cleaner can carry the vacuum cleaner by means of the carrying handle without the carrying strap getting in the way. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Further advantageous embodiments are described in detail below with reference to the embodiments shown in the drawings, but the invention is not limited to said embodiments. The drawings schematically show:

[0022] Figure 1 A) and b) show a perspective view of a vacuum cleaner according to the invention with a carrying strap.

[0023] Figure 2 Show Figure 1 An enlarged perspective view of a portion of a vacuum cleaner.

[0024] Figure 3 Shown through Figure 2 A cross-sectional view of a vacuum cleaner handle.

[0025] Figure 4 Shown through Figure 2 Another cross-sectional view of the vacuum cleaner handle

[0026] Figure 5 In a), b) and c) details of a tape winder according to the invention are shown. DETAILED DESCRIPTION

[0027] In the following description of preferred embodiments of the present invention, the same reference numerals denote the same or similar components.

[0028] exist Figure 1 A) and b) of the drawings show three-dimensional views of a portable vacuum cleaner 1 according to an embodiment of the present invention. The vacuum cleaner 1 comprises a housing 2, which consists of a cover part and a base part, for example. Rollers for moving the vacuum cleaner on the floor are arranged on the base part. The base part and the housing 2 surround an inner chamber in which a vacuum cleaner bag and / or a filter and an exhaust fan with an electric motor can be placed. Basically, the basic structure of the vacuum cleaner 1 can correspond to a common industrial vacuum cleaner or the like.

[0029] A suction opening 7 is formed in the base part of the housing 2 , to which, for example, a suction pipe or a suction hose can be connected.

[0030] According to the invention, the vacuum cleaner 1 has a shoulder strap 3 for carrying the vacuum cleaner 1. Thus, the vacuum cleaner 1 can be used, for example, to clean stairs without having to carry the vacuum cleaner 1 with one hand. Figure 1 In a), the strap 3 is in the first winding state. Figure 1 b), the shoulder strap 3 is in the second unfolded state.

[0031] In addition, a carrying handle 5 for lifting or carrying the vacuum cleaner 1 is arranged on the housing 2. After opening the closure arranged on the housing 2, the carrying handle 5 can also be used to remove the cover part from the base part, for example. On both ends of the carrying handle 5, a belt reel 4 for winding up the shoulder strap 3 is arranged in the housing 2. The shoulder strap 3 is connected to the cover part of the housing 2 via the belt reel 4.

[0032] A first end of the shoulder strap 3 is fixed to a first belt winder 4. A second end of the shoulder strap 3 is fixed to a second belt winder 4. Between the first end and the second end, the shoulder strap 3 has a length of approximately 50 cm to 70 cm.

[0033] Figure 2 An enlarged detail view of the cover part of the housing 2 is shown. In this view, a recess 5a can be seen in the carrying handle 5. In this recess 5a, the shoulder strap 3 lies flat in the rolled-up state so that it can be stored in the carrying handle 5.

[0034] Figure 3 The upper part of the housing 2 and the carrying handle 5 are shown in cross-section. The shoulder strap 3 is shown in a first rolled-up state by solid lines. The shoulder strap 3 is shown in a second unfolded state by dashed lines. Figure 3 In the sectional view of FIG. 2 , two belt reels 4 can be seen at the two ends of the carrying handle 5 in the upper part of the housing 2 . Figure 3 A loop 6 on the harness 3 is shown in FIG. 1 , which is used to pull the harness 3 so as to unwind the harness 3 .

[0035] As in Figure 3 As can be clearly seen in the figure, by pulling on the loops 6, the shoulder strap 3 is pulled out of the two belt reels 4 in a direction perpendicularly away from the carrying handle 5. Since the two ends of the shoulder strap 3 are wound in the belt reels 4, the shoulder strap 3 is symmetrically unrolled, so that a movement of the loops 6 perpendicular to the pulling direction is not required.

[0036] Figure 4 Shows something like Figure 3 Another sectional view of the invention, in which the individual components are shown separated from one another.

[0037] Figure 5 A detailed view of the belt winder 4 is shown. The belt winder 4 comprises a shaft 4a, two springs 4b and two sleeves 4c.

[0038] exist Figure 5 In a) is shown the shaft 4a of the belt winder for winding up the strap 3. One end of the strap 3 is fixed to the shaft 4a by a clamping element. The strap 3 can then be wound onto the shaft 4a. The shaft 4a substantially has the shape of a spindle or a reel.

[0039] like Figure 5 b), the coil springs 4b are respectively arranged at the two ends of the shaft 4a. Then, the sleeve 4c is connected around the shaft 4a by means of a clamp, so that the shaft 4a is rotatably supported in the sleeve 4c.

[0040] The two helical springs 4 b are tensioned when the belt 3 is unwound from the belt reel 4 and can accordingly bring about an automatic winding of the belt 3 in the belt reel 4 .

[0041] Therefore, the belt winder 4 has two springs 4b, which are operatively connected to the shaft 4a and the sleeve 4c. The springs 4b are fastened by the sleeve 4c so that they do not rotate together when the strap 3 is unrolled. Figure 5 The two ends shown are arranged concentrically around the shaft 4a.

[0042] The features disclosed in the above description, the claims and the drawings are significant for realizing the invention in various embodiments, both individually and in any desired combination.

[0043] Reference numerals list

[0044] 1 Vacuum cleaner

[0045] 2 Housing

[0046] 3 Straps

[0047] 4 belt winder

[0048] 4a Axis

[0049] 4b Spring

[0050] 4c sleeve

[0051] 5 Carrying handle

[0052] 6 Rings

[0053] 7 Suction opening

Claims

1. A portable vacuum cleaner (1), comprising: Housing (2); a carrying strap (3) for carrying the vacuum cleaner (1); and A first belt winder (4) arranged on the housing (2) for winding the shoulder belt (3), wherein: The shoulder strap (3) is connected to the housing (2), and The first end of the shoulder strap (3) is fixed to the first strap winder (4).

2. The vacuum cleaner (1) according to claim 1, further comprising: a second belt winder (4) arranged on the housing (2) for winding the shoulder belt (3), wherein The second end of the shoulder strap (3) is fixed to the second strap winder (4).

3. The vacuum cleaner (1) according to claim 1 or 2, wherein: The first belt winder (4) and / or the second belt winder (4) each have a clamping device for locking the shoulder strap (3). The clamping device is configured to prevent the strap (3) from being unfolded or wound in a first locking state, and to enable the strap (3) to be unfolded or wound in a second state.

4. A vacuum cleaner (1) according to any one of the preceding claims, wherein The first belt winder (4) has a shaft (4a) for winding the shoulder belt (3), and The first end of the shoulder strap (3) is connected to the shaft (4a).

5. The vacuum cleaner (1) according to any one of claims 2 to 4, wherein: The second belt winder (4) has a shaft (4a) for winding the shoulder belt (3), and The second end of the shoulder strap (3) is connected to the shaft (4a).

6. The vacuum cleaner (1) according to claim 4 or 5, wherein: The shaft (4a) is rotatably mounted at each end thereof in a sleeve (4c) of the belt winder (4).

7. The vacuum cleaner (1) according to claim 6, wherein: The first belt winder (4) and / or the second belt winder (4) each have a spring (4b) which is operatively connected to the shaft (4a), and The spring (4b) is configured to cause automatic winding of the harness (3).

8. The vacuum cleaner (1) according to claim 6, wherein: The first belt winder (4) and / or the second belt winder (4) each have two springs (4b), which are operatively connected to the shaft (4a). The two springs (4b) are respectively arranged concentrically around the two ends of the shaft (4a), and The spring (4b) is configured to cause automatic winding of the harness (3).

9. The vacuum cleaner (1) according to any one of the preceding claims, wherein: The shoulder strap (3) has a length of 40 cm to 160 cm.

10. The vacuum cleaner (1) according to any one of the preceding claims, wherein: In the rolled-up state, the strap (3) is either completely arranged in the housing (2) or lies flat on the housing (2).

11. The vacuum cleaner (1) according to any one of the preceding claims, wherein: The shoulder strap (3) has a loop (6) for pulling out and unfolding the shoulder strap (3).

12. The vacuum cleaner (1) according to claim 11, wherein: When the shoulder strap (3) is in a rolled-up state, the collar (6) is arranged outside the housing (2).

13. The vacuum cleaner (1) according to any one of the preceding claims, wherein: The vacuum cleaner has two shoulder straps (3).

14. The vacuum cleaner (1) according to any one of the preceding claims, further comprising a carrying handle (5).

15. The vacuum cleaner (1) according to claim 14, wherein: The first belt winder (4) and / or the second belt winder (4) are arranged on or in the carrying handle (5) or arranged on or in the housing of the vacuum cleaner (1) in close proximity to the carrying handle (5).

16. The vacuum cleaner (1) according to claim 14 or 15, wherein: The shoulder strap (3) is located in a recess (5a) in the carrying handle (5) in the rolled-up state.

17. The vacuum cleaner (1) according to any one of the preceding claims, wherein The shoulder strap (3) has a shoulder pad.

Images