CN114365968A - Surface treatment device with pivotable handle - Google Patents

Abstract

The invention relates to a surface treatment device (1) having a device housing (2) and a handle (4) which is mounted pivotably on the device housing (2) by means of a joint (3), wherein the joint (3) has a device part (5) associated with the device housing (2) and a handle part (6) associated with the handle (4), wherein the device part and the handle part can be fixed in at least two positions relative to each other by means of a fixing element (7). In order to achieve a comfortable pivoting and fastening of a handle (4) of a surface treatment apparatus (1), it is proposed that the apparatus part (5) and the handle part (6) each have a cylindrical bearing region (8,9), wherein the bearing regions (8,9) are arranged coaxially to one another with respect to the cylinder axis (10) thereof, wherein the apparatus part (5) and the handle part (6) each have a cylindrical fastening region (11,12), the cylinder axis (13) of which is arranged eccentrically with respect to the cylinder axis (10) of the bearing regions (8,9), and wherein the fastening regions (11,12) are surrounded at least in the circumferential direction by a fastening element (7).

Description

Surface treatment device with pivotable handle

Technical Field

The invention relates to a surface treatment device having a device housing and a handle which is mounted pivotably on the device housing by means of a joint, wherein the joint has a device part associated with the device housing and a handle part associated with the handle, the device part and the handle part being fixable relative to one another in at least two positions by means of a fixing element.

Background

Surface treatment devices are well known in the prior art. They usually have a pivotably mounted handle in order to be able to store the surface treatment device in a space-saving manner or to enable the user to carry out different treatment tasks, for example in the region of the ground or in a region above the ground. For example, the handle can be oriented for floor treatment along an extension of the device housing on the one hand or can be pivoted onto the device housing, for example, in order to achieve a compact surface treatment device for treatment above the floor. In order to fix the desired position, the handle is held in position by means of a fixing element, wherein it is known to use a snap-lock connection or a press-fit connection. Documents EP 2220986B 1(US 8,028,373B 2) and DE 1035330B, for example, disclose surface treatment apparatuses with pivotable handles.

It is also known from the machine tool field to use clamping straps to fix the handle relative to the base unit. For example, DE 102011010039 a1 discloses a power tool having a clamping section to which a handle can be fastened by means of a clamping strap. The clamping segments and the clamping band also have form-fitting connecting elements which can be engaged with one another in order to prevent a displacement of the handle in the circumferential direction.

It is also known, for example in the bicycle art, to use quick clamps to fix two members relative to each other. The quick-action clamp has an eccentrically designed clamping element which acts with increasing force against the component to be fixed when rotating.

Disclosure of Invention

In the case of the surface treatment device described here, a possibility is provided for fastening the handle, which can be integrated into the joint of the handle in a space-saving and intuitive manner, in particular without the user having to intentionally carry out an additional fastening step in order to fasten the handle relative to the device housing.

In order to solve the above-mentioned problem, the invention proposes that the equipment part and the handle part of the surface treatment equipment each have a cylindrical bearing region, which are arranged coaxially with respect to their cylinder axis, wherein the equipment part and the handle part each have a cylindrical fastening region, the cylinder axis of which is arranged eccentrically with respect to the cylinder axis of the bearing region, and wherein the fastening region(s) is/are surrounded at least in the circumferential direction by a fastening element.

According to the invention, the device part of the device housing and the handle part of the handle are parts of a joint and each have a bearing region and a fastening region, wherein the cylinder axis of the fastening region does not coincide with the cylinder axis of the bearing region. Instead, the cylinder axes of the bearing regions of the device part and the handle part are either coaxial with one another or are oriented along a common straight line, so that at least their axial extensions coincide with one another. The fastening regions of the device part and of the handle part can be designed, for example, as circular plates, with their cylinder axes lying next to the cylinder axis of the bearing region with respect to the radial direction. By rotating the grip part relative to the device part, the cylinder axis of the fastening region of the grip is moved away from the cylinder axis of the fastening region of the device part fixed relative to the device housing from the non-fastened release position. The common circumferential contour of the two fastening regions is widened in this way. During clamping, the fastening region acts from the inside against the fastening element, which circumferentially surrounds the fastening region. A frictional force is generated here, which is suitable for holding the handle section in a fixed position, similar to the clamping force in the case of a quick-action clamp with an eccentrically designed clamping element.

In particular, it is proposed that the fastening regions have a circumferential surface which is inclined with respect to the cylinder axis of the respective fastening region. According to this embodiment, the fixing region has an inclined edge which can be clamped against a corresponding inner wall of the fixing element. In this case, a connection of corresponding shape is preferably produced with no or little play, which fixes the fastening regions relative to one another both radially and axially. The handle can thereby be fixed relative to the device housing.

Preferably, the inclined circumferential surface has an angle of 30 to 60 degrees with respect to the cylinder axis, in particular an angle of about 45 degrees with respect to the cylinder axis. Use of the term "about" shall include slightly different slopes, such as 40 degrees, 41 degrees, 42 degrees, 43 degrees, 44 degrees, 46 degrees, 47 degrees, 48 degrees, 49 degrees, 50 degrees, and values in between. At an inclination of 45 degrees, the clamping force is preferably evenly distributed in the axial and radial directions. The angle of the inclined circumferential surface with respect to the cylinder axis of the fastening region is preferably selected such that it corresponds to the forces acting on the joint in the axial and radial directions.

It is proposed that the fixing elements are designed to correspond in both circumferential and radial direction to the shape of the fixing areas of the equipment part and the handle part. This means that, when the circumference of the fastening region is inclined, the fastening element has an inner wall with a slope which corresponds to the slope of the edge of the fastening region. The fastening region can thereby be clamped optimally in the fastening element, in order to preferably achieve a play-free state in a defined end position of the handle. The fixing element can form a friction-fit connection with respect to the fixing area due to its geometry and dimensions.

It is furthermore proposed that the fastening element is a clamping ring, in particular a clamping ring consisting of two or more clamping ring parts which are successive in the circumferential direction and which can be moved relative to one another in order to allow the clamping ring to be mounted on the fastening region of the equipment part and the handle part. The fixing element can be formed, for example, from two parts or more parts from metal or plastic. In combination with two fastening regions surrounded by fastening elements, a connection is formed, for example, between two flanges and a clamping ring.

It is also proposed that the bearing region of the handle part is inserted into the bearing region of the device part at least with respect to the axial section. It is likewise also possible to provide that the bearing region of the device part is inserted into the bearing region of the handle part at least in relation to the axial section. Preferably, the cylindrical bearing area of the handle part overlaps the cylindrical bearing area of the device part by approximately two thirds in the axial direction. This means that, for example, two thirds of the support region of the handle part relative to its longitudinal extent is inserted into the support region of the device part. The support area of the device part thus serves as a support means for the handle part. The two bearing regions or the handle part and the device part can also be optimally oriented relative to one another so that no tilting occurs when the two bearing regions are rotated relative to one another.

Preferably, the surface treatment device with the above-described joint is designed such that the handle can be pivoted into two end positions by means of the joint. The two end positions are preferably at an angle of rotation of about 180 degrees from each other. By means of this design, the handle can be brought into two opposite positions relative to the device housing of the surface treating device, i.e. a position which is formed, for example, in an extension relative to the longitudinal extension of the device housing, and an inwardly pivoted position, wherein the handle is configured substantially parallel to the longitudinal extension of the device housing. When the handle is pivoted inwards, the surface treatment device can preferably be used as a portable device which is lifted from the surface to be treated and guided as a compact unit along a surface above the ground during surface treatment.

It is also proposed that the surface treating appliance have a blocking element to lock the handle part in a defined end position relative to the appliance part. The blocking element is an additional component which preferably fixes the end position reached by the handle part without play. The user can thus use the surface treating appliance without having to worry about the handle of the surface treating appliance being out of a certain position and the surface treating device slipping out of his hand.

It is particularly proposed that the locking element is a screw which can be moved axially into the fastening region of the handle part. According to this embodiment, the blocking element is inserted through a pivotable fastening region of the handle part and is fastened to a partial region of the device part that is stationary relative to the device housing.

In particular, it is proposed that the latching element and the fastening region of the device part have corresponding fastening structures. The fastening structure can have, for example, corresponding rotational locking elements which follow one another in the circumferential direction of the cylindrical device part or handle part. Such a rotary locking element can be designed in particular as a toothing. In addition to the fastening region of the blocking element and the device part, it is also possible to provide for the fastening region of the handle part to have such a fastening structure for fastening the handle part. According to this embodiment, the latching element, the fastening region of the device part and the fastening region of the handle part have corresponding fastening structures. In this way, a particularly play-free fixing of the handle part relative to the device part of the joint can be achieved. According to one embodiment, the locking element has, for example in the axial region of the locking element, a toothing which corresponds to the toothing of the inner side of the pivotable handle section, in particular is designed to be form-fitting with respect to the toothing of the inner side of the pivotable handle section. On the opposite end region of the blocking element, for example, a circumferential surface with teeth can be formed, which engage in a corresponding toothing of the device part in a form-fitting manner. It is additionally possible for the corresponding surface with the fastening structure to be conical. This further reduces the total play of the joint in the end position of the handle. By axially moving the blocking element back from the fastening region of the handle part, the form-fitting connection of the fastening structure can be cancelled again, so that the handle part can be moved again relative to the device part, in particular into the opposite end position of the handle.

The blocking element can be actuated, for example, by means of a push button which can be moved in the axial direction of the fastening region of the handle part and the device part. Additionally, the button can be spring-loaded in order to achieve an automatic return of the button into a defined initial position.

Drawings

The invention is further illustrated below with reference to examples. In the drawings:

fig. 1 shows a surface treating appliance according to the invention with a handle pivotable by means of a joint;

FIG. 2 shows a perspective view of the joint in the intermediate position;

fig. 3 shows the joint in an exploded view;

FIG. 4 shows a side view of the joint in a first end position;

fig. 5 shows a sectional view of the joint according to fig. 4;

fig. 6 shows a side view of the joint in the intermediate position according to fig. 2;

fig. 7 shows a sectional view of the joint according to fig. 6;

figure 8 shows a side view of the joint in the second end position;

fig. 9 shows a sectional view of the joint according to fig. 8.

Detailed Description

Fig. 1 shows an exemplary surface treatment device 1, which is designed here, for example, as a cleaning device, i.e., here, for example, as a hand-held vacuum cleaner. The surface treatment device 1 has a base unit 17 and a connection area 16 for additional devices. The additional device may be, for example, a suction nozzle and/or a cleaning element, such as a rotating brush roller. The surface treatment apparatus 1 can be operated with or without additional equipment. For example, the surface treating appliance 1 can be used together with an additional appliance for the floor-protecting treatment of the floor, while the surface treating appliance 1 can be used alone, i.e. without an additional appliance connected thereto, for advantageous cleaning above the floor, for example for vacuuming shelves or the like. The base unit 17 also has a handle 4 on which the user can guide the surface-treating unit 1 during a normal treatment operation, for example over a surface to be cleaned. Here, the user alternately pushes and pulls the surface treatment device 1 away and back, usually in opposite directions of travel. Furthermore, a switching device, which is not shown in detail here, can be arranged on the handle 4, preferably for switching an electrical consumer of the surface treatment device 1, for example for a fan or the like. Furthermore, a switching device can be provided, by means of which the user can select the power level or the treatment intensity. The surface treatment device 1 can be connected in the usual manner to a domestic power supply via a power plug and/or can have a battery for supplying power to the electrical consumer.

The handle 4 can be pivoted about a joint 3, the joint 3 projecting partially through the device housing 2 of the base device 17. The joint 3 serves to rotate the handle 4 relative to the device housing 2 into two defined end positions. Fig. 1 shows a first end position of the handle 4, in which the handle is oriented in the extension of the longitudinal extent of the surface treatment device 1, so that the user can guide the surface treatment device 1 in an upright manner, for example by rolling an additional device, not shown here, over the surface to be cleaned. The handle 4 here forms an extension of the base unit 17, so that the user does not have to bend down towards the surface to be cleaned. The further end position of the handle 4 is preferably separated by a pivot angle of 180 degrees, so that, with reference to the view of fig. 1, the handle 4 can be pivoted into the peripheral contour of the base device 17. In this position, the user is preferably able to use the surface treating appliance 1 for above-ground applications, wherein a compact, portable appliance is advantageous, the center of mass of which is close to the user's hand.

In order to pivot the handle 4 into two end positions which are opposite each other by 180 degrees, the joint 3 has a device part 5 and a handle part 6, as shown in fig. 2 and 3. The device part 5 is a fixed component of the base device 17 and is arranged immovably on the base device 17. For example, the device part 5 can be formed on the device housing 2 of the surface treatment device 1 or can be fixedly connected thereto, for example by means of a connecting technique such as adhesive bonding, screw connection, snap-on connection. It is important that the device part 5 cannot move relative to the base device 17. Conversely, the handle portion 6 can be pivoted relative to the device portion 5 and thus also relative to the base device 17, so that when the handle portion 6 is moved, the handle 4 is also moved. The handle portion 6 is part of the handle 4 and is fixedly connected thereto, for example by an integral design with the handle 4 or by a connection, for example by gluing, snap-on connection, screw connection or the like. The device part 5 and the handle part 6 are connected to the joint 3 by means of a fixing element 7. The fixing element 7 effects a rotation of the grip part 6 relative to the device part 5, i.e. into two opposite end positions shown in fig. 4 and 8. Between the two is the intermediate position shown in fig. 6 as neutral position (or equilibrium position), i.e. the pivot path at half the pivot angle. Furthermore, a blocking element 15 is associated with the joint 3, which serves to lock the end position reached, so that the user can be certain that, when the blocking element 15 is actuated, the handle 4 is fixed and cannot be pivoted about the joint 3, which could lead to the surface treatment device 1 slipping out of the user's hand and to accidents.

Fig. 3 shows an exploded view of the joint 3 in detail. The device part 5, the handle part 6 and the corresponding fixing element 7 are visible. The device part 5 has a support region 8 and a fastening region 11, while the handle part 6 also has a support region 9 and a fastening region 12. The bearing regions 8,9 of the device part 5 and the handle part 6 are of cylindrical design and each carry an likewise cylindrical, disk- like fastening region 11,12 at one end. The bearing regions 8,9 are arranged coaxially with respect to their cylinder axis 10, wherein the bearing region 9 of the handle part 6, for example, is inserted into the bearing region 8 of the device part 5. The axial overlap of the device part 5 with the handle part 6 in the longitudinal direction of the cylinder axis 10 is, for example, two thirds of the longitudinal extent of the bearing region 9 of the handle part 6. The bearing region 8 of the device part 5 thus serves as a bearing for the bearing region 9 of the handle part 6. The above-mentioned fastening regions 11,12 are arranged eccentrically with respect to their cylinder axis 13 with respect to the bearing regions 8,9 of the device part 5 or the handle part 6 (see fig. 4). The fixing element 7 is designed as a two-part clamping ring, the parts of which can be fixed to one another by means of fixing means, such as bolts, to form a complete ring. The inner wall of the fixing element 7 corresponds to the outer shape of the fixing areas 11 and 12. The fastening regions 11,12 additionally have, for example, an inclined circumferential surface 14, as shown in fig. 4 to 9. The inclination of the circumferential surface 14 is in this case, for example, 45 degrees. Due to the eccentric arrangement of the fastening regions 11,12 relative to the cylinder axis 10 of the bearing regions 8,9, the fastening regions 11,12 are clamped inside the fastening element 7 when the handle 4 is pivoted and thus also when the handle section 6 is pivoted. This is assisted by the inclined circumferential surface 14 of the fixing regions 11, 12. The fixing regions 11,12 abutting against one another are fixed in the axial and radial direction by the inclination of the circumferential surface 14. The achieved end position of the handle part 6 relative to the device part 5 can be fixed by means of a blocking element 15, which protrudes outward here, for example, as a push button. For this purpose, lower partial regions of the blocking element 15 have fastening structures 19, 20. The first fastening means 19 has a toothing running around the circumference of the locking element 15 for connection to a corresponding toothing of the bearing region 9 of the handle section 6. The fixing structure 20 is intended to engage with a corresponding toothing of the bearing region 8 of the device part 5. The blocking element 15 can be pressed against the restoring force of the associated spring element 18, as a result of which the spring element 18 is compressed, and a user of the surface treating appliance 1 can form a gap 21 between the bearing region 8 of the appliance part 5 and the blocking element 15 by pulling up the handle 4 (see fig. 7). Thereby releasing the fastening structure 19 or 20 and effecting a rotation of the bearing region 9 of the handle portion 6 inside the bearing region 8 of the device portion 5. The user can then pivot the handle 4 into the desired other end position and lock there by pressing the blocking element 15. In this way, the spring element 18 is again relieved of stress, the gap 21 closes and the fastening structures 19,20 engage. As can be seen in particular in fig. 5, 7 and 9, the bearing region 8 of the device part 5 and the end region of the blocking element 15 additionally have a conical shape in order to further reduce the overall play of the connection.

Fig. 4 and 5 show the joint 3 in detail in a first of two possible end positions. Fig. 6 and 7 show the joint 3 in a neutral position, which is centered between the two end positions with respect to the pivot angle. Finally, fig. 8 and 9 show the joint 3 in the second end position. As can be seen from fig. 7, the cylinder axes 13 of the fastening regions 11,12 lie against one another in the neutral position and the stresses in the fastening element 7 are relieved. In this case, there is a maximum clearance between the fixing areas 11,12 and the inner wall of the fixing element 7. If the handle 4 is moved from the neutral position into one of the end positions according to fig. 5 or 9 and the fastening region 12 of the handle part 6 is pressed from the inside against the fastening element 7, the play is reduced again.

List of reference numerals

1 surface treatment apparatus

2 device housing

3 Movable joint

4 handle

5 parts of the apparatus

6 handle part

7 fixing element

8 bearing area

9 bearing area

10 cylinder axis

11 fixed area

12 fixation area

13 cylinder axis

14 peripheral surface

15 blocking element

16 connection region

17 basic equipment

18 spring element

19 fixing structure

20 fixed structure

21 gap

Angle of alpha pivot

Claims (14)

1. Surface treatment device (1) having a device housing (2) and a handle (4) which is pivotably mounted on the device housing (2) by means of a joint (3), wherein the joint (3) has a device part (5) which is assigned to the device housing (2) and a handle part (6) which is assigned to the handle (4), which can be fixed in at least two positions relative to one another by means of fixing elements (7), characterized in that the device part (5) and the handle part (6) each have a cylindrical bearing region (8,9), wherein the bearing regions (8,9) are arranged coaxially with respect to one another with respect to their cylinder axis (10), wherein the device part (5) and the handle part (6) each have a cylindrical fixing region (11,12), the cylinder axis (13) of the fixing regions (11,12) being arranged relative to the bearing region (8), 9) and wherein the fastening region (11,12) is surrounded at least in the circumferential direction by the fastening element (7).

2. Surface treatment apparatus (1) according to claim 1, characterized in that the fixing zones (11,12) have a circumferential surface (14) which is inclined with respect to the cylinder axis (13) of the respective fixing zone (11, 12).

3. A surface treatment apparatus (1) according to claim 2, characterized in that the inclined circumferential surface (14) has an angle of 30 to 60 degrees with respect to the cylinder axis (13).

4. A surface treatment apparatus (1) according to claim 2, characterized in that the inclined circumferential surface (14) has an angle of 45 degrees with respect to the cylinder axis (13).

5. A surface treatment device (1) according to claim 1, characterized in that the fixing element (7) is designed to correspond to the shape of the fixing area (11,12) both in the circumferential direction and in the radial direction.

6. Surface treatment apparatus (1) according to claim 1, characterized in that the fixing element (7) is a clamping ring.

7. Surface treatment installation (1) according to claim 1, characterized in that the bearing region (9) of the handle part (6) is inserted into the bearing region (8) of the installation part (5) at least with respect to the axial section or the bearing region (8) of the installation part (5) is inserted into the bearing region (9) of the handle part (6) at least with respect to the axial section.

8. A surface treating device (1) according to claim 1, characterized in that the handle (4) is pivotable into two end positions by means of the joint (3).

9. A surface treating device (1) according to claim 8, characterized in that the two end positions are at a rotation angle of 180 degrees from each other.

10. A surface treating appliance (1) as claimed in claim 1, characterized in that a blocking element (15) is provided to lock the handle part (6) in a determined end position relative to the appliance part (5).

11. A surface treating appliance (1) according to claim 10, characterized in that the blocking element (15) is a bolt which is axially movable into the fixing area (12) of the handle portion (6).

12. A surface treating appliance (1) according to claim 11, characterized in that the locking element (15) and the fixing area of the appliance part (5) have corresponding fixing structures.

13. A surface treating appliance (1) according to claim 12, characterized in that the locking element (15) and the fixing area (12) of the handle portion (6) have corresponding fixing structures (19, 20).

14. Surface treatment apparatus (1) according to claim 12 or 13, characterized in that the respective fixing structures (19,20) are respective circumferentially successive rotation locking elements.

Images