Protective element for an electric machine tool

Abstract

The invention relates to a protective element, in particular a cover, for the protective hood of a disc-shaped tool of a power tool, in particular an angle grinder, comprising a protective element body that is reversibly fastened to the protective hood in an assembled position by clamping the protective hood between fastening elements and a leaf spring of the protective element body. The invention also relates to a manufacturing method for the protective element and a power tool with this protective element.

Description

[0001] The invention relates to a protective element as an additional cover part for the protective hood of a disc-shaped tool of a power tool, in particular an angle grinder. The protective element is designed to be captively and reversibly connectable to the protective hood and to at least partially cover the tool. The invention also relates to a method for producing the protective element and to a power tool provided with the protective element.

[0002] Most angle grinders come standard with a protective guard that allows for safe grinding with the disc-shaped grinding tool. However, if the tool is to be used for cutting, using the edge rather than the flat side, it is important to add an additional element to the guard to protect the user. The IEC 62841-2-3 standard for angle grinders stipulates that they must provide adequate protection during both grinding and cutting. Therefore, it is common practice to provide an additional protective element for optional connection to the guard.

[0003] The protective hood often consists of a circular segment-shaped shielding element that is attached to the head of the power tool via a connecting section. This shielding element partially covers the disc-shaped tool in a rear axial direction, whereby the axial direction refers to the rotation axis of the disc-shaped tool and the rear direction is the side of the protective hood facing the device. In addition to a flat protective surface, the shielding element has a surrounding shell surface that also serves to partially cover the tool in the radial direction. With an additional protective element, the power tool can be extended as required so that the tool is also partially covered in the front axial direction. This extension also makes it possible to effectively protect the user from accelerated material particles such as sparks in the axial direction.

[0004] To allow the user to easily switch between the two functions of cutting and grinding, it is common practice to attach an additional protective element to the shielding element without the need for tools, for example, by clipping it on. The IEC 62841-2-3 standard specifies that for such a tool-free attachment, the protective element must have a clear locking position and should not experience significant deterioration in its condition.

[0005] DE 10 2021 126 776 A1 discloses a tool-free cover element for a protective hood. It has a clamping element designed as a spring element, the tension of which holds the cover element to the protective hood in the installed position. The clamping element is connected to the cover element by means of a rivet, and the fastening points of the cover element, which serve as counterbearings, are located on the cover element's lateral extension arms. Such an arrangement is mechanically sensitive and relatively complex to manufacture.

[0006] The present invention is based on the object of providing a protective element as an additional cover part for the protective hood of a disc-shaped tool of a power tool, in particular an angle grinder, wherein the protective element is designed to be reversibly connectable to the protective hood in a simple, reliable and robust manner without loss.

[0007] This object is achieved in particular by the protective element of claim 1. Preferred embodiments of the invention are subject matter of the dependent claims and are described below, in particular in connection with the exemplary embodiments shown in the figures. The protective element according to the invention is designed in particular as a cover element for the protective hood of a disc-shaped tool of a power tool, in particular an angle grinder, wherein the protective element is designed to be reversibly connectable to the protective hood in a captive manner and to at least partially cover the tool. The protective element according to the invention is in particular a cover for the protective hood. The protective element according to the invention comprises a protective element body, comprising: a first end, a second end, wherein the second end is opposite the first end, in particular along a central axis M of the protective element, at least one fastening element which is attached to the first end and is designed to be reversibly connectable to a protective hood edge of the protective hood when the protective element is mounted on the protective hood, a receiving device for receiving a leaf spring, wherein the receiving device is arranged at the second end, wherein the leaf spring is arranged in the receiving device and is designed such that the leaf spring is tensioned in a mounting position of the protective element on the protective hood and the protective hood is clamped between the leaf spring and the at least one fastening element.

[0008] The protective element according to the invention serves in particular for partially covering a disc-shaped tool, in particular a grinding and cutting tool, of a machine tool, in particular an angle grinder. The covering is provided in particular from an axial front direction, with the protective element being designed in particular for retrofitting the machine tool.

[0009] The protective element body preferably has a first wall (front side) and a rear wall opposite this first wall, wherein the first wall and the rear wall are preferably connected via an outer wall of the protective element body that runs essentially parallel to a tool axis. The outer wall runs, in particular, concentrically around the tool axis. The outer wall, in particular, has the receiving device for the leaf spring.

[0010] The first wall preferably has the shape of a circular ring segment. It is preferably substantially planar or nearly perpendicular to the tool axis. The circular ring segment is preferably substantially one half of a circular ring that runs substantially perpendicular to the tool axis.

[0011] The rear wall is essentially in the shape of a circular ring segment and, after assembly, is preferably arranged almost perpendicular to the tool axis. An inclination of the first wall at an angle of up to 5° or 10° with respect to the rear wall, in particular with respect to a plane running perpendicular to the tool axis, is particularly preferred. The circular ring segment is preferably essentially one half of a circular ring that runs essentially perpendicular to the tool axis 50. To achieve a sufficient covering function, the first wall preferably extends further radially inward in the direction of the tool axis than the rear wall.

[0012] The leaf spring is preferably a metallic component, particularly made of stainless steel. It is particularly elongated, particularly web-shaped, particularly strip-shaped. The length of the leaf spring is, in particular, several times greater than its height. This simple design enables long-term, reliable tensioning between the protective element and the protective cover. Furthermore, this design allows for space-saving installation of the leaf spring.

[0013] The leaf spring can preferably be brought into a first position in which the leaf spring has a low, in particular no, tension, in which, in particular, the protective element is disassembled and spaced from the protective cover. The leaf spring can preferably be brought into the assembly position in which the protective element is captively and reversibly clamped to the protective cover via a tensioning force, in particular of 50 N, of the leaf spring (40).

[0014] The receiving device enables a simple and reliable connection of the leaf spring to the protective element body. In particular, thanks to the receiving device, no separate connecting element is required for this connection. The leaf spring engages in two receptacles in the protective element body. These receptacles are provided in an outer wall of the protective element body. The receptacles are located opposite one another, in particular with respect to the central axis M of the protective element body. The central axis M runs perpendicular to the tool axis.

[0015] The receiving device preferably has two opposite regions, particularly with respect to a central axis (M) of the protective element body, each region preferably having the following components: a tensioning edge, wherein the leaf spring in the receiving device rests against the tensioning edge, a contact section, wherein a distance A between the two contact sections is smaller than the length of the leaf spring, a transition edge, wherein the transition edge comprises a transition of the receiving device, in particular of the receptacle, into an inner circumference of the protective element body, in particular into an inner circumference of an outer wall of the protective element body.

[0016] Preferably, the protective element body has a first wall and, perpendicularly opposite thereto, a rear wall, wherein a free space 'F' is defined below the first wall in the direction of the rear wall, wherein the free space is designed to enable the mounting of the tool, in particular by tilting.

[0017] The protective element body preferably has an extension, wherein the extension is configured to encompass the protective hood, in particular at a distance. The extension extends, in particular, from an inner side of the protective element body radially inward in the direction of the tool axis. The extension extends, in particular, concentrically around the tool axis and, in the assembled position, concentrically to an outer wall of the protective hood.

[0018] Preferably, the first wall is arranged at an angle to the rear wall, preferably less than 5°, or less than or equal to 3°.

[0019] Preferably, the at least one fastening element is designed to enable a positive and / or non-positive connection to the protective cover. Preferably, the at least one fastening element is hook-shaped. Preferably, a number N > 0 of fastening elements is provided, in particular N = 1 or preferably N = 2. It is also preferred that N = 3, 4, 5, or 6.

[0020] The leaf spring is preferably metallic. It preferably contains or is made of an austenitic material, particularly chromium-nickel steel 1.4310. This ensures high reliability.

[0021] Preferably, the tension or deflection of the leaf spring in the assembly position is effected in such a way that its center point is displaced radially outwards in relation to the tool axis in the direction of an outer wall of the protective element body.

[0022] Preferably, a material or the material of the protective element is selected from the group of thermoplastics, in particular polyamides, in particular glass fiber reinforced thermoplastics.

[0023] Preferably, the protective element body is of integral construction, which is also referred to here as "monolithic." In particular, it is an injection-molded part or a component manufactured using an additive manufacturing process.

[0024] The leaf spring preferably has a length of between 40 and 100 mm, preferably between 50 and 90 mm, preferably between 60 and 80 mm. In particular, the leaf spring has a height of preferably between 5 and 30 mm, preferably between 8 and 20 mm, preferably between 10 and 15 mm. In a preferred embodiment, the leaf spring has dimensions of LxHxD = 70 x 12.7 x 1 mm, thus a thickness T = 1 mm. The thickness can in particular be between 0.3 mm and 3 mm.

[0025] In the assembled state of the protective element, the leaf spring inserted in the receiving device preferably has a deflection of between 2 mm and 6 mm, in particular approximately 4.1 mm in a preferred embodiment. The leaf spring rests against the clamping edge. The deflection is determined in particular as the maximum deflection of the leaf spring in the direction along the central axis of the protective element body, in particular through the center of the leaf spring.

[0026] Preferably, the leaf spring inserted in the receiving device exhibits no deflection when the protective element is not mounted on the protective cover. When the protective element is not mounted, the leaf spring is arranged freely in the receiving device, without tension and with play.

[0027] The distance from the clamping edge to the transition edge of the protective element, measured in the direction parallel to the central axis M, is about 4.7 mm, for a protective cover for a tool disc with a diameter of 115 mm, or about 3.4 mm, for a protective cover for a tool disc with a diameter of 125 mm, or about 2 mm, for a protective cover for a tool disc with a diameter of 150 mm

[0028] Particularly preferably, the distance from the clamping edge to the transition edge, measured in a direction parallel to the central axis M, is determined such that, when the protective element is mounted, the deflection of the leaf spring is constant, regardless of the diameter of the tool disc and the protective element. The deflection of the leaf spring is determined such that the required pull-off force is met in accordance with the standard. The distance depends on the diameter of the tool disc, the abrasive, and the spring properties of the leaf spring used. Assuming the use of a leaf spring with the same parameters (length, width, thickness, spring properties), for protective elements with different diameters, this distance is smaller the larger the diameter of the tool disc. In other words, when using the same leaf spring, this distance increases as the diameter of the tool disc and the protective element decreases. Tool discs orAbrasives are known with diameters of 100mm, 115mm, 125mm, 150mm, 180mm, and 230mm. According to the invention, the described distance can be determined depending on the diameter such that the deflection of the leaf spring and, consequently, the generated clamping force is constant. This distance can be determined for any diameter of a tool disc, regardless of the aforementioned diameter.

[0029] The invention also relates to an angle grinder having a protective hood and a protective element according to the invention that can be connected to this protective hood.

[0030] The invention also relates to a method for producing the protective element according to the invention, comprising the steps: Producing the protective element body by a process, for example by injection molding or additive manufacturing; inserting the leaf spring into the receiving device of the protective element body.

[0031] In the following, the invention is explained in more detail using several embodiments shown in the drawings; they show: Figure 1a shows the perspective view of a protective element according to the invention according to an embodiment. Figure 1b shows a detail of the protective element of the Fig. 1a . Figure 2 shows a section of a cross-sectional view of the protective element of the Fig. 1a . Figure 3 shows a detail of the view from Fig. 2 . Figure 4 shows a cross-sectional view of the protective element of the Figure 1a . Figure 5 and 6 each show a cross-sectional view of a protective element according to the invention, viewed perpendicular to a tool axis, according to two further different embodiments. Fig. 4a shows a detail of the Fig. 4 . Fig. 5a shows a detail of the Fig. 5 . Fig. 6ashows a detail of the Fig. 6 . Figure 7 shows a perspective side view of the protective element to be attached to a protective hood of the Fig. 1a , in a section parallel to the tool axis. Figure 8 shows a perspective side view of the protective element attached to a protective hood of the Fig. 1a , in a section parallel to the tool axis, as well as a grinding wheel during the process of its assembly on a spindle of an angle grinder. Fig. 9 shows a cross-sectional view of the protective element of the Fig. 8 . Fig. 10 shows the protective element of the Fig. 1a in a front view.

[0032] Figure 1a illustrates the perspective view of a protective element 100 according to the invention - also referred to as an overcoat. The protective element has a protective element body 18. This has on its front side a - in Fig. 1aupwards facing wall 14 and another opposite wall 14 in Fig. 1a downwardly facing rear wall 16, wherein the wall 14 and the rear wall 16 are connected via an outer wall 17 running substantially parallel to the tool axis 50.

[0033] The protective element 100 is designed as a covering element in that it has the wall 14 serving as a covering wall, with which a disc-shaped tool can be partially covered. The protective element 100 was developed to connect securely and reversibly to a protective hood 30 and to cover at least part of the disc-shaped tool, thus protecting a user or preventing undesired impact of the tool on a workpiece. The protective element body 18, which is part of the protective element 100, has a further specific structure: it has a section with a first end 10 and a section with a second end 20 opposite the first end. The first end 10 is thus the Figure 1ashown open end and the second end 20 is the closed end of the protective element body 18 opposite thereto, the ends being opposite each other along a radial direction M which is perpendicular to the tool axis 50.

[0034] Furthermore, the present embodiment of the protective element 100 shows a first functional complex with two fastening elements 11, which are attached to the first end 10 of the protective element 100. These fastening elements 11 were designed to form a reversible connection with a protective hood edge 32 of the protective hood 30. This configuration of the protective element 100, in combination with a second functional complex, ensures reliable fastening and covering of the tool by the protective element 100 and the protective hood 30.

[0035] Figure 1billustrates the fixing of the protective element 100 according to the invention to a protective hood 30. The first functional complex is shown enlarged, which is positioned at the first end 10 of the protective element 100, accordingly at the protective hood edge 32, and has several fastening elements 11, of which in Fig. 1b one is shown. In the illustrated embodiment, these fastening elements 11 are structurally seamless, in particular monolithically, connected to the protective element body 18 and are designed here as projections of an edge 13 of the protective element body 18 pointing in the direction of the first end 10. The arrangement and shape of the fastening element 11 means that an inner side of the rear wall 16 of the protective element body 18 can bear in contact with an outer side of the protective hood 30.

[0036] The fastening element 11 serves as an abutment. It is, in particular, a hook element, which here has an opening 12 pointing toward the protective element body 18. A protective element 100 preferably has two fastening elements 11. Alternatively, however, preferably just one fastening element 11 or more than two fastening elements 11 can be provided.

[0037] In the illustrated embodiment, the fastening elements 11 are designed with a U- or V-shaped opening 12. When mounted, each fastening element 11 engages around the protective hood 30 at its protective hood edge 32 and is tensioned toward the protective hood 30 by means of a second functional complex.

[0038] This creates a force-locking and form-locking connection between the protective hood 30 and the protective element 100 with the help of the first and second functional complex.

[0039] The illustrated opening 12 serves the purpose of facilitating the effortless and secure installation of the protective element 100 by enabling simple attachment to the protective hood 30 or its protective hood edge 32. In the illustrated embodiment, each individual fastening element 11 has a specific length of approximately 15 millimeters - measured along the protective hood edge 32 -, thereby ensuring optimal fixation of the protective element 100. Furthermore, the fastening elements 11 were deliberately positioned away from the tool axis 50, shown in Figure 2, placed away from the protective element to ensure a stable and reliable fastening. In particular, this means that a fastening element is positioned closer to an outer periphery of the protective element 100 than to a center of the protective element 100, through which the tool axis 50 passes in the assembled position. This positioning contributes to increasing the structural strength of the protective element 100 in the assembled position by enabling a robust connection to the protective hood 30.

[0040] In the Figure 2The second functional complex for attaching the protective element 100 to the protective hood 30 can be seen, which is positioned at the end opposite the first end 10, the second end 20 of the protective element 100. This second functional complex includes a receiving device 21 configured to receive a leaf spring 40, which is specifically designed for the installation and functionality of the leaf spring 40. The receiving device 21 includes two clamping edges 22 and contact sections 23 located opposite one another with respect to a central axis M of the protective element 100, which serve to ensure correct assembly and reliable use of the assembled overshoe.

[0041] The contact section 23, which is L-shaped here (the L-shape being mirrored in the upper area of the embodiment shown), is positioned in alignment with the tool axis 50. The distance A between the outermost edges 26 of the contact sections 23, which are perpendicularly opposite one another in the direction of the central axis M of the cover, is smaller than the length of the leaf spring 40 that is inserted into the receiving device 21. The distance X between the inner edges 27 of the contact sections 23, which are perpendicularly opposite one another in the direction of the central axis M of the cover, is greater than the length of the leaf spring 40 that is inserted into the receiving device 21. This configuration ensures that the leaf spring 40 can be inserted into the receiving device 21 safely and without loss by enabling reliable locking and a tight fit.

[0042] The leaf spring 40 is strip-shaped, with a maximum dimension along its longitudinal extension. The dimensions of the leaf spring 40 in the illustrated embodiment are 70 x 12.7 x 1 mm. The dimensions of the distances A and X and the length of the leaf spring 40 are determined such that the leaf spring 40 can be inserted into the receiving device 21 with play, i.e., loosely. When inserting the leaf spring 40, it is bent until its length is slightly shorter than the distance A, so that the leaf spring 40 can be inserted into the receiving device 21. In the assembled state, when the protective element 100 is attached to the protective hood 30, the clamping edges 22 form contact points for the leaf spring 40.

[0043] Figure 3Illustrates a transition edge 24 of the receiving device 21 into the inner circumference of the protective element 100. This illustration clarifies the area in which the receiving device 21 transitions into the inner circumference D of the protective element 100. This transition area formed by the transition edge 24 marks the section in which the structural elements of the receiving device 21 transition into the interior of the protective element 100 to ensure a continuous and flowing connection that holds the leaf spring 40 as part of the second functional complex.

[0044] Figure 4illustrates the exemplary structural component dimensions for meeting a pull-off force, which is achieved here by a specific deflection of 4.1 mm for the leaf spring 40 made of material 1.4310. The material 1.4310 of the metallic leaf spring 40 is a chromium-nickel steel with an austenitic structure, which is known as a classic stainless spring steel due to its good formability and hardness.

[0045] The intended deflection of the leaf spring 40 occurs in the assembly position such that its center point is shifted radially outward relative to the tool axis (50) toward the outer wall (17) of the protective element body (18). In particular, the deflection occurs such that the leaf spring 40, on the side facing the tool axis 50, is bent from the peripheral surface of the protective hood 30 toward the clamping edges 22. The positioning of the second functional group was determined accordingly to ensure a specific deflection of the leaf spring 40 of 4.1 mm. This deflection is intended to achieve the desired pull-off force according to the specified requirements.

[0046] The market-leading abrasive diameters are 115, 125, and 150 mm. Other abrasives are also known, such as 100 mm, 180 mm, and 230 mm. Since the inner diameter of a protective element 100 essentially corresponds to the outer diameter of a corresponding protective cover 30, and this diameter or radius influences the deflection of the leaf spring 40, the second functional complex is arranged depending on the corresponding diameter.

[0047] How Figures 4 and 4a As shown, the distance s from the clamping edge 22 to the transition edge 24 for a protective hood 30 for a tool disk with a diameter of 115 mm is approximately s = 4.7 mm. This dimension describes the specific distance between the clamping edge 22 and the transition area 24, measured in a direction parallel to the central axis M, on the protective hood 30 with a fixed length of 115 mm.

[0048] With respect to the protective element 200 of the Figure 5 and 5a The distance s between the clamping edge 22 and the transition area 24 for a 30' protective hood is approximately s = 3.4 mm, for a tool disk with a diameter of 125 mm. This value describes the distance between the clamping edge 22 and the transition area 24, measured in a direction parallel to the central axis M, on a 30' protective hood with a fixed length of 125 mm.

[0049] For the protective element 300 of the Figure 6 and 6a the distance s between the clamping edge 22 and the transition area 24 along a 30" protective hood for a tool disc with a diameter of 150 mm is approximately s = 2 mm. This information describes the distance between the clamping edge 22 and the transition area 24, measured in the direction parallel to the central axis M, on a 30" protective hood which is designed for an abrasive with a diameter of 150 mm.

[0050] As can be seen, with increasing diameter of the guard, the clamping edge 22 is positioned closer to the tool axis 50. These different arrangements aim to achieve the required deflection of the leaf spring 40 of 4.1 mm for varying diameters of the guard 30. This generates the necessary clamping force to ensure the required pull-off force of 50 N according to the standard (DIN EN IEC 62841-2-3 (VDE 0740-2-3):2022-07, in particular Appendix AA), regardless of the diameter of the guard 30 or the grinding wheel.

[0051] The regulation regarding the replacement of a grinding wheel while the protective element 100 is mounted requires a height of the protective element 100 that is greater than that of the protective hood 30.

[0052] Figure 7presents a section through a protective element 100, which is mounted above a protective hood 30. It can be seen that the protective element 100 has a free space F, which in the illustrated embodiment is arranged above the protective hood 30.

[0053] In Figure 8 It becomes clear that the free space marked 'F' of a mounted protective element 100 can be used to mount a grinding wheel 30 or a comparable tool. A grinding wheel can be inserted and secured at an angle into the protective hood 30, onto the shaft of a machine tool, using the free space F. This is possible with the protective element 100 mounted.

[0054] To further facilitate the assembly of the protective element 100, the wall 14 of the protective element 100 serving as a cover wall 14, which covers the grinding wheel in the axially outward direction, is arranged together with the free space 'F' at an angle of approximately 3 degrees in the embodiment shown.

[0055] In Figure 9In the illustrated embodiment, an extension 15 is provided on the protective element 100, which serves to keep the protective element 100 stable during operation of an angle grinder through a positive fit. This extension 15 is positioned at the height of the center line of the protective element 100 and is located at a distance from the rear wall 16 of the protective element 100. The extension 15 is dimensioned such that the protective element 100 is arranged stationary during operation of the machine tool. Furthermore, the extension 15 is also arranged at an angle of approximately 3 degrees to the rear wall 16 to ensure that the assembly of the protective element 100 and a grinding wheel 30 is not impaired by the extension 15. The first wall 14, the cover wall, is opposite the rear wall 16. Both walls 14 and 16 have a slight inclination relative to a plane exactly perpendicular to the tool axis 50, with wall 14 being more inclined than the rear wall 16.Both walls 14 and 16 therefore only run essentially perpendicular to the tool axis 50.

[0056] The rear wall 16 and the second wall 14 are monolithically connected by the outer wall 17. The extension 15, which runs circumferentially around the tool axis 50, is provided in the transition region between the wall 14 and the outer wall 17. The outer wall 17 runs parallel to the tool axis 50. The protective element body 18 is, in particular, an injection-molded part. The first wall 16 is shaped such that, in the assembled position of the protective element 100, it rests flat against an outer wall of the protective hood 30, with this outer wall running almost perpendicular to the tool axis.

[0057] Fig. 10shows the rear wall 16 and the wall 14 of the protective element 100, which are connected via the outer wall 17, in a rear view. The outer wall 17, which runs concentrically in the circumferential direction around the tool axis 50, has the receiving device 21 for the leaf spring 40. The rear wall 16 essentially has the shape of a circular ring segment and is essentially planar or nearly perpendicular to the tool axis 50. The circular ring segment is essentially one half of a circular ring. The wall 14, the front side, also essentially has the shape of a circular ring segment and is essentially perpendicular to the tool axis 50. The circular ring segment is essentially one half of a circular ring. In order to achieve a sufficient covering function, the wall 14 extends further radially inward in the direction of the tool axis 50 than the rear wall 16. This allows the maximum possible protection of the tool disk to be achieved. List of reference symbols

[0058] 100 protective element 10 first end 11 Fastening element 12 opening 13 edge 14 Wall 15 appendage 16 back wall 17 exterior wall 18 Protective element body 20 second end 21 Reception facility 22 clamping edge 23 Investment section 24 transition edge 26 outer edge 27 inner edge 30 protective cover 32 Protective hood edge 40 leaf spring 50 Tool axis A Distance D inner circumference F Free space M radial direction X Distance

Claims

1. A protective element (100), in particular a cover, for the protective hood (30) of a disc-shaped tool of a power tool, in particular an angle grinder, wherein the protective element is configured to be captively reversibly connectable to the protective hood (30) and to at least partially cover the tool, comprising a protective element body (18) comprising: a first end (10), a second end (20), wherein the second end (20) is opposite the first end (10), at least one fastening element (11) which is attached to the first end (10) and is configured to be reversibly connectable to a protective hood edge (32) of the protective hood (30) when the protective element (100) is mounted on the protective hood (30), a receiving device (21) for receiving a leaf spring (40), wherein the receiving device (21) is arranged at the second end (20), wherein the leaf spring (40) is arranged in the receiving device (21) and configured is,that the leaf spring is tensioned in a mounting position of the protective element (100) on the protective hood (30) and the protective hood (30) is clamped between the leaf spring (40) and the at least one fastening element (11).

2. Protective element (100) according to claim 1, wherein the leaf spring (40) can be brought into a first position in which the leaf spring (40) has a low, in particular no, tension, in which the protective element (100) is disassembled and spaced from the protective hood (30), and can be brought into the assembly position in which the protective element (100) is captively reversibly clamped to the protective hood (30) via a tensioning force of the leaf spring (40).

3. Protective element (100) according to one of the preceding claims, wherein the receiving device (21) comprises two regions opposite one another with respect to a central axis (M) of the protective element body (18), each region having the following: a tensioning edge (22), wherein the leaf spring (40) in the receiving device rests against the tensioning edge (22) when the protective element is mounted, a contact section (23), wherein a distance A between the two contact sections (23) is smaller than a length of the leaf spring (40), a transition edge (24), wherein the transition edge (24) comprises a transition of the receiving device (21) into an inner circumference of the protective element body (18), in particular into an inner circumference of an outer wall (17) of the protective element body (18).

4. Protective element (100) according to one of the preceding claims, wherein the protective element body (18) has a rear wall (16) and, opposite thereto, a wall (14), wherein a free space (F) is defined below the wall (14) in the direction of the rear wall (16), wherein the free space (F) is designed to enable the mounting of the tool, in particular by tilting.

5. Protective element (100) according to one of the preceding claims, wherein the protective element body (18) has an extension (15), wherein the extension (15) is designed to encompass the protective hood (30), whereby the mounted protective element is held stationary.

6. Protective element (100) according to one of claims 4 or 5, wherein the wall (14) is arranged at an angle, preferably 3°, to the rear wall (16).

7. Protective element (100) according to one of the preceding claims, wherein the fastening element (11) enables a positive and / or non-positive connection with the protective hood, and is in particular hook-shaped.

8. Protective element (100) according to one of the preceding claims, wherein the leaf spring (40) is metallic, and in particular contains an austenitic material, in particular chromium-nickel steel 1.4310.

9. Protective element (100) according to one of the preceding claims, wherein the deflection of the leaf spring (40) in the assembly position takes place such that its center point is displaced radially outwards with respect to the tool axis (50) in the direction of an outer wall (17) of the protective element body (18).

10. Protective element (100) according to one of the preceding claims, wherein the material of the protective element (100) is selected from the group of thermoplastics, in particular polyamides, in particular glass fiber reinforced thermoplastics.

11. Protective element (100) according to one of the preceding claims, wherein the protective element body (18) is monolithic.

12. Protective element (100) according to one of the preceding claims, wherein the leaf spring is an elongated part with a length which is several times greater than the maximum height of the component, in particular with a length of between 40 and 100 mm, preferably between 60 mm and 80 mm.

13. Protective element (100) according to claim 12, wherein the leaf spring (40) has a deflection, in particular a deflection of between 2 mm and 6 mm, in particular a deflection of 4.1 mm, when the protective element is mounted on a protective hood (30).

14. Power tool, in particular angle grinder, comprising a protective element (100) according to one of claims 1 to 13.

15. A method for producing the protective element according to one of claims 1 to 13, comprising the steps of: • producing the protective element body (18), in particular by an injection molding process; • inserting the leaf spring (40) into the receiving device (21) of the protective element body.

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