Handheld circular saw with suspension device

Abstract

The invention relates to a hand-held circular saw (100) having a housing (110) in which a drive motor (120) for rotationally driving a circular saw blade (140) is arranged, and having a handle (115) which is arranged on the housing (110) and on which a suspension device (199) is arranged, said suspension device having a rotational axis section and a hook element (160), the hook element (160) being arranged perpendicular to the rotational axis section, the invention relates to a hand-held circular saw (100) comprising a housing (110) having a rotary shaft section which forms a rotary axis and is rotatably mounted on the housing (110), the hook element (160) being pivotable about the rotary axis in an associated plane (302), the associated plane (302) being oriented parallel to a center-of-gravity plane (301) of the hand-held circular saw (100).

Description

Technical Field

[0001] The present invention relates to a hand-held circular saw, which comprises: a housing, in which a drive motor for rotationally driving a circular saw blade is arranged; and a handle arranged on the housing, on which a suspension device with a rotating shaft section and a hook element is arranged, wherein the hook element is arranged perpendicular to the rotating shaft section, wherein the rotating shaft section constitutes a rotating axis and is supported on the housing so as to be rotatable. Background Art

[0002] Such a hand-held circular saw is known from the prior art. The hand-held circular saw has a housing in which a drive motor is arranged for driving the circular saw blade in rotation. In addition, a handle is provided which is arranged on the housing and on which a suspension device is arranged, which has a rotation axis section and a hook element. The hook element is arranged perpendicular to the rotation axis section, wherein the rotation axis section forms the rotation axis and is mounted on the housing so that it can rotate. Summary of the invention

[0003] The present invention relates to a hand-held circular saw, which comprises: a housing, in which a drive motor for rotating a circular saw blade is arranged; and a handle arranged on the housing, on which a suspension device with a rotation axis section and a hook element is arranged, wherein the hook element is arranged perpendicular to the rotation axis section, wherein the rotation axis section forms a rotation axis and is supported on the housing in a rotationally movable manner. The hook element can be swiveled about the rotation axis in an assigned plane, wherein the assigned plane is oriented parallel to the center of gravity plane of the hand-held circular saw.

[0004] Therefore, the present invention achieves the provision of a hand-held circular saw, wherein the hand-held circular saw can be safely and stably suspended by arranging the associated plane parallel to the center of gravity plane, thereby effectively preventing the hand-held circular saw from accidentally falling.

[0005] Preferably, a distance is formed between the associated plane and the center of gravity plane, wherein the distance is a maximum of 40 millimeters.

[0006] Thus, a secure and reliable suspension of the hand-held circular saw is achieved.

[0007] The rotation axis section is preferably arranged parallel to the rotation axis of the circular saw blade.

[0008] Thus, a suitable arrangement of the axis of rotation can be achieved in a simple manner.

[0009] Preferably, the hook element can be rotated on the handle at a predetermined rotation angle, wherein the predetermined rotation angle is in the range of 90° to 210°.

[0010] Thus, a proper alignment of the hand-held circular saw can be carried out easily and uncomplicatedly by means of the hook element, wherein an accidental fall can be effectively prevented.

[0011] According to one embodiment, the hook element is configured in a U-shape or an L-shape.

[0012] Thus, a hook element can be provided in a simple manner for arrangement on a round or angular retaining element.

[0013] Preferably, a bushing is assigned to the rotary shaft section, which bushing is designed to lock the rotary shaft section at least in an assigned locking position.

[0014] Thus, a safe and secure arrangement of the rotary shaft section can be achieved.

[0015] Preferably, a pin is provided for axially fixing the rotational axis section on the handle, wherein the pin is connected to the rotational axis section in a rotationally fixed manner.

[0016] Thus, a stable and secure fixing of the rotation axis section to the handle can be achieved.

[0017] Preferably, the bushing has at least one recess on its end side facing the pin, in which recess the pin is arranged in the locking position.

[0018] Therefore, simple and safe locking can be achieved.

[0019] Preferably, the suspension device is arranged on a side of the handle facing the circular saw blade or on a side of the handle facing away from the circular saw blade.

[0020] Thus, a suitable arrangement of the suspension device can be achieved in a simple manner.

[0021] Preferably, the housing has a receptacle for securing the hook element in a rest position.

[0022] Thus, safe and reliable operation of the hand-held circular saw can be achieved.

[0023] According to one embodiment, an operating element is assigned to the hook element for pivoting from the rest position into the locking position.

[0024] This makes it possible for a user of the handheld circular saw to conveniently pivot the operating element. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The invention is explained in more detail in the following description with reference to the embodiments shown in the accompanying drawings. It is shown that:

[0026] Figure 1 Side view of a hand-held circular saw with the suspension device in the locked position,

[0027] Figure 2 Figure 1 A top view of a hand-held circular saw with a suspension device in a rest position,

[0028] Figure 3 along Figure 1 Look in the direction of arrow 198 Figure 1 and Figure 2 View of a handheld circular saw,

[0029] Figure 4 Figures 1 to 3 Side view of a hand-held circular saw with a suspension device in a rest position and in a locked position,

[0030] Figure 5 Figures 1 to 4 An enlarged detail of a hand-held circular saw with the suspension device in a resting position,

[0031] Figure 6 Figures 1 to 5 A magnified detail of a handheld circular saw, without Figures 1 to 5 The suspension device,

[0032] Figure 7 Figures 1 to 5 An enlarged detail of a hand-held circular saw having Figures 1 to 5 The suspension device,

[0033] Figure 8 Figures 1 to 7 Perspective view of a handheld circular saw,

[0034] Fig. 9 Belong to Figures 1 to 8 A perspective view of a hook element of a suspension device,

[0035] Fig.10 Figures 1 to 8 A perspective view of an alternative hook element of a suspension device,

[0036] Fig.11 Figures 1 to 8 A perspective view of another hook element of the suspension device,

[0037] Fig.12 A sectional view of a handle associated with a hand-held circular saw is used to illustrate the Figures 1 to 8 Arrangement of the swivel axis sections of the suspension,

[0038] Fig.13 Fig.12 Perspective view of the rotary axis section,

[0039] Fig.14 Belong to Fig.12 and Fig.13 Magnified view of the bushing of the rotating shaft section,

[0040] Fig.15 Arranged on the rotating shaft section Fig.14 Side view of the bushing,

[0041] Fig.16 Fixed Figures 1 to 8 The handle of a handheld circular saw Figures 12 to 15 A top view of the rotation axis section, and

[0042] Fig.17 Figures 1 to 8 A top view of a housing half shell of a handle of a hand-held circular saw with an alternative preload of the rotation axis section. DETAILED DESCRIPTION

[0043] In the figures, elements having the same or similar functions are provided with the same reference symbols and are described in detail only once.

[0044] Figure 1 An exemplary hand-held circular saw 100 is shown, which has a housing 110 in which a drive motor 120 is arranged for rotating a circular saw blade 140. Preferably, a handle 115 is assigned to the housing 110. Preferably, an operating element 117 for activating the drive motor 120 of the hand-held circular saw 100 is arranged on the handle 115. Optionally, an auxiliary handle 105 for two-handed operation of the hand-held circular saw 100 is assigned to the housing 110.

[0045] According to one embodiment, the handheld circular saw 100 has a battery pack for powering independently of the power grid. Alternatively, the handheld circular saw 100 has a power grid cable for powering dependent on the power grid. In addition, the handheld circular saw 100 preferably has a base plate 150. Preferably, during the processing, the base plate 150 is placed on the workpiece to be processed. In addition, the handheld circular saw 100 has a depth adjustment device 130 for adjusting the cutting depth of the circular saw blade 140 in the workpiece to be processed. Preferably, the depth adjustment device 130 is arranged in the area of ​​the handle 115 of the handheld circular saw 100. In addition, the circular saw blade 140 is equipped with an exemplary upper protective cover 132 and a lower protective cover 134.

[0046] According to the present invention, the suspension device 199 is arranged on the housing 110. The suspension device 199 has a rotation axis section 162 and a hook element 160. The hook element 160 is preferably arranged perpendicular to the rotation axis section 162. Preferably, the rotation axis section 162 forms a rotation axis ( Figure 2 203 in the figure) and is supported on the housing 110 in a rotatable manner. Preferably, the rotating shaft section 162 is supported on the handle 115 in a rotatable manner.

[0047] The suspension device 199 is preferably designed to be able to suspend the hand-held circular saw 100 on a holding element 190, for example a wooden beam or a pole, wherein the handle 115 is shown upwards by way of example. This allows the hand-held circular saw 100 to be easily removed from the suspended position by a user. For this purpose, the suspension device 199 is preferably arranged on Figure 1 The handheld circular saw 100 is arranged in the longitudinal direction 101 of the handheld circular saw 100 in the region of a center of gravity 182 , on which the weight force of the handheld circular saw 100 acts, which is indicated by an arrow 184 .

[0048] According to one embodiment, the hook element 160 is designed in a U-shape. In this case, the hook element 160 has a first section 171 connected to the rotation axis section 162. Preferably, the rotation axis section 162 is arranged in the housing 110 in the recess 119.

[0049] The first section 171 is arranged, by way of example, at an angle 178 with the second section 164. The angle 178 is preferably 90°. The second section 164 is arranged, by way of example, at an angle 179 with the third section 173. The angle 179 is preferably at least 90° and preferably less than or equal to 180°. By way of example, the angle 179 is 120°. The third section 173 is assigned, by way of example, a fourth section 174. The fourth section 174 is preferably arranged parallel to the first section 171. Here, a distance 166 is constructed between the first and fourth sections 171, 174. In addition, the second section 164 has, by way of example, a length 165. The length 165 is preferably less than the distance 166.

[0050] Preferably, the suspension device 199, in particular the hook element 160, is equipped with an operating element 170 for moving from the rest position ( Figure 4 401) swings to the locked position ( Figure 4 In addition, the housing 110 has a Figure 4 401) in the receiving portion 192 for receiving the hook element 160. Preferably, the operating element 170 is arranged in the area of ​​the operating element 117 for activating the drive motor 120. The operating element 170 is preferably arranged on the hook element 160 by coating injection. In addition, Figure 1 An arrow 198 is shown, which indicates Figure 3 's viewing direction.

[0051] Figure 2 It shows that the Figure 1 A hand-held circular saw 100 with a suspension device 199. Here, Figure 2 The rotation axis 204 of the circular saw blade 140 and the Figure 1 The hook element 160 or the rotation axis 203 of the rotation axis section 162. The circular saw blade 140 is Figure 2Preferably, the rotation axis 203 of the rotation axis section 162 is arranged parallel to the rotation axis 204 of the circular saw blade.

[0052] Figure 3 Shown with Figure 1 and Figure 2 The circular saw blade 100 of the suspension device 199 is Figure 1 198. Preferably, the hook element 160 is assigned a plane 302, and the center of gravity 182 of the hand-held circular saw 100 is assigned a center of gravity plane 301. Preferably, the hook element 160 can be around in the plane 302. Figure 2 The rotation axis 203 of the hook element 160 is swung. The center of gravity plane 301 is preferably arranged in the area of ​​the handle 115. According to the invention, the plane 302 of the hook element 160 is oriented parallel to the center of gravity plane 301, at least within the customary manufacturing tolerance range. Preferably, a distance 310 is formed between the plane 302 and the center of gravity plane 301. Preferably, the distance 310 is a maximum of 40 mm.

[0053] Figure 4 Shown with Figures 1 to 3 The present invention relates to a hand-held circular saw 100 with a suspension device 199. The hook element 160 is preferably shown in a rest position 401 and a locked position 402. For this purpose, the hook element 160 can be rotatably arranged around a predetermined rotation angle 410 on the handle 115. Preferably, the predetermined rotation angle 410 is between 90° and 210°.

[0054] Figure 5 Shown with Figures 1 to 4 Detail of a housing 110 of a hand-held circular saw 100 with a suspension device 199 , wherein the suspension device 199 is arranged in a rest position 401 . In the rest position 401 , the suspension device 199 , in particular the hook element 160 , is arranged in a receptacle 192 in the housing 110 .

[0055] Figure 6 Shows Figures 1 to 5 The housing 110 of the handheld circular saw 100 is partially Figures 1 to 5 The suspension device 199. Here, Figure 6 shows the receiving Figures 1 to 5 The receiving portion 192 of the hook element 160 of the suspension device 199. The receiving portion 192 has a positioning tab 510 with a receiving surface 512 for Figure 4 The stationary position 401 partially receives Figures 1 to 5 The first section 171 of the hook element 160 of the suspension device 199 .

[0056] Figure 7 Shown with Figures 1 to 5A portion of the housing 110 of the handheld circular saw 100 with the suspension device 199 . Figure 7 4 shows the first section 171 of the hook element 160 of the suspension device 199 in the rest position 401 , wherein the first section 171 is partially arranged in the receiving surface 512 .

[0057] Figure 8 Shown with Figures 1 to 5 and Figure 7 The hand-held circular saw 100 is provided with a suspension device 199. Preferably, the suspension device 199 is arranged on the handle 115 facing the Figure 1 140, or on a side 602 of the handle 115 facing away from the circular saw blade 140. Figure 8 In the embodiment, the suspension device 199 is arranged on the side 601 or the left side of the handle 115. Figure 8 , an alternative suspension device 660 is disposed on the side 602 or exemplary right side of the handle 115 .

[0058] Fig. 9 Shows Figures 1 to 5 , Figure 7 and Figure 8 The hook element 160 and the rotation axis section 162 of the suspension device 199 are shown, and the plane 302 assigned to the hook element 160 is described. Preferably, the hook element 160 is at an angle 710 with the rotation axis section 162. Preferably, the angle 710 is 90°. The hook element 160 and the rotation axis section 162 are constructed in one piece. According to one embodiment, the hook element 160 and the rotation axis section 162 are constructed as curved wires with a round or cubic cross section.

[0059] Fig.10 Shows Figures 1 to 5 , Figure 7 and Figure 8 The present invention is a two-piece embodiment of the hook element 160 and the rotation axis section 162 of the suspension device 199. Here, the hook element 160 is configured as a component 820, and the rotation axis section 162 is configured as a component 810. The two components 810 and 820 are preferably connected to each other by a fixed connection (such as a welded connection).

[0060] Fig.11 Shows Figures 1 to 5 , Figure 7 and Figure 8 According to another embodiment, the hook element 160 of the suspension device 199 is configured to be L-shaped. Here, by way of example, the hook element 160 only has the first and second sections 171, 164.

[0061] Fig.12The rotary shaft section 162 is shown arranged in the recess 119 of the handle 115. Preferably, the handle 115 has two housing half shells 1001, 1002. By way of example, the recess 119 is formed in the left housing half shell 1002, while the receptacle 1060 is formed in the exemplary right housing half shell 1001. Here, the rotary shaft section 162 is supported in the housing half shell 1002 via a sleeve 1020. A disk 1022 is assigned to the sleeve 1020, wherein the rotary shaft section 162 has at least one loading element 1021. The at least one loading element 1021 loads the sleeve 1020 into the recess 119.

[0062] Preferably, the rotating shaft section 162 is equipped with a bushing 1040. The bushing 1040 is configured to lock the rotating shaft section 162 at least in Figure 4 In the assigned locking position 402. In addition, a pin 1050 is provided for axially fixing the rotating shaft section 162 on the handle 115. The pin 1050 is preferably connected to the rotating shaft section 162 in a rotationally fixed manner. Preferably, the bushing 1040 is loaded on the pin 1050 via the spring element 1030. As a result, the rotating shaft section 162 is supported in the housing 110 or the handle 115 and is arranged to be axially movable.

[0063] Fig.13 Shows Figures 1 to 5 , Figures 7 to 9 and Fig.12 The rotary shaft section 162 of the suspension device 199 has at least one (two in the example) loading element 1021 with a disk 1022 and a sleeve 1020 as well as a spring element 1030 , a bushing 1040 and a pin 1050 . Fig.13 The bushing 1040 is shown, which has at least one recess 1120, 1130 on its end side 1110 facing the pin 1050. In the at least one recess 1120, 1130, the pin 1050 is arranged Figure 4 In the locking position 402. By way of example, there are two oppositely arranged recesses 1120, 1130.

[0064] In addition, the bushing 1040 has at least one anti-rotation tab 1150 on its outer periphery. The anti-rotation tab 1150 is exemplarily fixedly arranged in a groove ( Fig.16 When the rotating shaft section 162 rotates, the bushing 1040 remains arranged in the groove and the bushing 1040 does not rotate.

[0065] Fig.14 shows no pin 1050 Fig.12 and Fig.131040 and shows the free end of the rotary shaft section 162 and preferably two recesses 1120 , 1130 formed on the front side 1110 of the bushing 1040 .

[0066] Fig.15 Shown arranged in Figure 12 to Figure 14 The bushing 1040 of the free end of the rotating shaft section 162 of the embodiment of the present invention is shown, and the flanks 1501, 1502 assigned to the end face side 1110 are described. Here, the left flank 1501 of the example has a relatively flat slope. The flank 1501 is configured to Fig.12 and Fig.13 The pin 1050 is directed toward the deep cut portion 1120. The right wing 1502 of the example is preferably configured to Fig.12 and Fig.13 When the user manipulates the hook element 160, only a relatively small initial rotation of the hook element 160, for example 45°, is required, and due to the pre-tensioning of the bushing 1040 by the spring element 1030, the pin 1050 then automatically moves along the flank 1501 to the Figure 4 in the locked position 402.

[0067] Fig.16 Shows Figures 12 to 15 The free end of the rotary shaft section 162 is located in the receiving portion 1060 of the housing half shell 1001. Fig.16 The arrangement of the anti-twist tab 1150 of the bushing 1040 in the groove 1602 of the housing half shell 1001 is shown. Fig.16 The arrangement of the pin 1050 in the recesses 1120 , 1130 is shown.

[0068] Fig.17 The housing half shell 1002 of the handle 115 is shown and an alternative configuration for prestressing the rotation axis section 162 is described. The rotation axis section 162 is preferably equipped with a leg spring 1720 for prestressing, wherein the pin is locked in place by a locking pin 1710. Figure 1 The locking pin 1710 is preloaded by the spring element 1712. If the rotating shaft section 162 is rotated or the locking pin 1710 is released, the rotating shaft section 162 moves to the stationary position 401 due to the preload. Figure 2 The locking pin 1710 preferably executes a movement in the radial direction 1701 of the rotation axis section 162 .

Claims

1. A hand-held circular saw (100), comprising: a housing (110), in which a drive motor (120) for rotationally driving a circular saw blade (140) is arranged; and a handle (115) arranged on the housing (110), on which a suspension device (199) is arranged, the suspension device having a rotation axis section (162) and a hook element (160), wherein: The hook element (160) is arranged perpendicularly to the rotation axis section (162), wherein the rotation axis section (162) forms a rotation axis (203) and is supported on the housing (110) in a rotatable manner, characterized in that the hook element (160) can be pivoted about the rotation axis (203) in an associated plane (302), wherein the associated plane (302) is oriented parallel to a center of gravity plane (301) of the hand-held circular saw (100).

2. The handheld circular saw according to claim 1, characterized in that: A distance (310) is formed between the associated plane (302) and the center-of-gravity plane (301), wherein the distance (310) is a maximum of 40 millimeters.

3. The handheld circular saw according to claim 1 or 2, characterized in that: The rotation axis section (162) is arranged parallel to the rotation axis (204) of the circular saw blade (140).

4. A hand-held circular saw according to any one of the preceding claims, characterised in that The hook element (160) is rotatable on the handle (115) at a predetermined rotation angle (410), wherein the predetermined rotation angle (410) is within a range of 90° to 210°.

5. A hand-held circular saw according to any one of the preceding claims, characterised in that The hook element (160) is configured in a U shape or an L shape.

6. A hand-held circular saw according to any one of the preceding claims, characterised in that A bushing (1040) is assigned to the rotary shaft section (162) and is designed to lock the rotary shaft section (162) at least in an assigned locking position (402).

7. The handheld circular saw according to claim 6, characterized in that A pin (1050) for axially fixing the rotational axis section (162) is provided on the handle (115), wherein the pin (1050) is connected to the rotational axis section (162) in a rotationally fixed manner.

8. The handheld circular saw according to claim 6 or 7, characterized in that: The bushing (1040) has at least one recess (1120) on its end side (1110) facing the pin (1050), in which recess the pin (1050) is arranged in the locking position (402).

9. A hand-held circular saw according to any one of the preceding claims, characterised in that The suspension device (199) is arranged on a side (601) of the handle (115) facing the circular saw blade (140) or a side (602) of the handle (115) facing away from the circular saw blade (140).

10. A hand-held circular saw according to any one of the preceding claims, characterised in that The housing (110) has a receiving portion (192) for receiving the hook element (160) in a rest position (401).

11. A hand-held circular saw according to any one of the preceding claims, characterised in that An operating element (170) is associated with the hook element (160) for pivoting from the rest position (401) into a locking position (402).

Images