Batch head seat with spacer ring

Abstract

The invention relates to a bit holder (100) for holding a bit (102) for coupling the bit (102) to a driving tool (104), wherein the bit holder (100) comprises: a receiving device (106) designed to receive the bit (102); a tool coupling (108) designed to be coupled to the driving tool (104); an impact load protection device (110) designed to protect against an impact load acting on the bit holder (100), in particular on a fixing sleeve (124) of the bit holder (100), when the bit holder (100) hits an obstacle (301), when a fixing element (114) to be driven by means of the bit (102), the driving tool (104) and the bit holder (100) is inserted, in particular in a rotary manner, into an anchoring base (112); and a spacer ring (200) mounted in a removable manner on the impact load protection device (110) along an insertion direction (119) on one side, wherein a through-opening (202) is provided in the spacer ring (200), which is configured for guiding the fixing element (114) therethrough in order to bring the fixing element into contact with the bit (102).

Description

Technical Field

[0001] This invention relates to a bit holder for holding a bit, for connecting a bit to a drive tool, and to a kit including a bit holder and a plurality of spacer rings, as well as a structure for mounting a fixing element into an anchoring base and a method for mounting a fixing element into an anchoring base. Background Technology

[0002] The advantage of using screwdriver bits is that a single tool can drive screws of various sizes. The bit holder, located between the bit and the driving tool, facilitates bit replacement and can also serve as an adapter, allowing for tightening, for example, using a drill. Furthermore, the bit holder effectively extends the bit's length. This is particularly advantageous, for example, when it is necessary to flatten or tighten screws in an angled position.

[0003] Drive tools such as cordless screwdrivers, cordless drills, drills, impact screwdrivers, and hammer drills typically feature quick-clamping drill chucks or magnetic hexagonal sockets, compatible with a variety of screwdriver bits. Magnetic bit holders can also be external bit holders. Bit holders can further simplify the work. Especially with the hexagonal sockets commonly found on cordless screwdrivers, a common problem is that bits may fall out of the bit holder during use. Bit holders secure the bits to prevent them from being pulled out, typically using a clamping mechanism or built-in magnets, and also allow for quick, one-handed bit changes. For example, using a bit holder allows drilling and screwing without changing tools. Bit holders also allow users to change bits without opening the quick-clamping drill chuck of the drive assembly.

[0004] Assembly aids for installing pin-type connecting mechanisms, such as those for mounting pin-type connecting mechanisms to anchor bases at angles equal to or less than 90°, are known. Their purpose is to precisely install wood screws at a defined angle (or 90°), for example, in wood-concrete composite systems, particularly ceilings. Such installation aids simplify and expedite the process of positioning the screw head relative to the anchor base at a defined distance and angle. For example, in wood-concrete composite systems, fully threaded screws are screwed into the wood surface at angles of 90°, 60°, 45°, or 30°. Here, as the screw is screwed into the wood surface, the screw head and part of the thread protrude from the wood surface, thus bonding with the concrete overlay. To facilitate the user in determining the screw's insertion depth, the screw can be colored up to its installation position. Another method for determining the screw's installation position is to press in a stop ring or screw thickening to define the desired screw protrusion length. Summary of the Invention

[0005] The purpose of this invention is to provide a bit holder, a bit holder for variable installation depth, a structure for installing a fixing element into an anchor base, and a method for installing a fixing element into an anchor base, wherein the installation depth of the fixing element can be precisely adjusted through simple operation by means of these devices and methods.

[0006] This objective is achieved through the subject matter having the features of the independent claims. Other embodiments are shown in the dependent claims.

[0007] According to one embodiment of the present invention, a bit holder for holding a bit and connecting the bit to a drive tool is provided. The bit holder includes: a receiving device designed to receive the bit; a tool connector designed to connect to the drive tool; an impact load protection device designed to protect against impact loads acting on the bit holder, particularly on the retaining sleeve of the bit holder, when a fixing element to be driven by the bit, drive tool, and bit holder is inserted into an anchoring base, particularly in a rotatable manner, when the bit holder collides with an obstacle; and a spacer ring removably mounted on one side of the impact load protection device along the insertion direction. A through-hole is provided in the spacer ring, configured to guide the fixing element through so that the fixing element comes into contact with the bit.

[0008] According to one embodiment of the present invention, a kit for mounting a fixing element into an anchoring base is provided. The kit includes: a bit holder for holding a bit for connecting the bit to a drive tool; and a bit that is received or can be received in a receiving device of the bit holder; and a plurality of spacer rings having different wall thicknesses between their inner surfaces and opposite outer end surfaces.

[0009] According to one embodiment of the present invention, a structure for inserting a fixing element into an anchoring base is provided. The structure includes: a bit holder for holding a bit and for connecting the bit to a drive tool; the bit, which is received or can be received in a receiving device of the bit holder; and a spacer device configured to be inserted into the anchoring base and to receive the bit holder in such a way that, when the fixing element is inserted into the anchoring base, the end face of an impact load protection device or a spacer ring abuts against a stop surface of the spacer device forming an obstacle, thereby inserting the fixing element into the anchoring base only to a predetermined depth. This spacer device is suitable for work where visibility requirements are not high, where fine adjustment via the spacer ring is not necessary.

[0010] This spacer can be used as an assembly aid for screws in wood-concrete composite applications, in conjunction with an impact-resistant bit holder, to precisely guide the screw's angle during tightening. When the screw reaches the preset tightening height, the impact-resistant bit holder contacts the stop surface of the spacer, and the screw is released after the impact-resistant bit holder is removed, thus precisely defining the screw's position and remaining extension length.

[0011] This spacer allows for a different installation angle for angled screws compared to existing methods, as it aligns with the working principle of impact-resistant bit holders. It not only possesses all the advantages of impact-resistant bit holders but also extends these advantages to applications requiring screws to be driven into wood surfaces at a specific angle, such as applications where the screw head must be positioned at a defined distance above the anchor base. This spacer is optimized for use with impact-resistant bit holders, for example, in wood-concrete composite systems. This defined spacer assembly for mounting screw or pin-like connection mechanisms can also be used in other applications (e.g., wood connectors, fixed mortises, i.e., mounting screws on the mortise and tenon surfaces of wood components as anti-warping devices for wood-concrete composite panels, and main beam-secondary beam connections). The screw or pin-like connection mechanism is guided to its designated position and can be tightened at high speed until the set point is reached. This significantly saves construction time, resulting in cost-effective connections. Other applications include general timber-framed buildings, solid-structure buildings, and furniture manufacturing. Examples include: in ventilated curtain walls, screws are screwed into grooves (guide grooves arranged at 90° angles); in timber-concrete composite panels, screws are installed on the grooved surfaces of timber components as anti-lifting devices; in main beam-secondary beam connections, long screwdriver bits are used to flush-mount screw heads into anchoring bases; when installing isolation screws for use with timber connectors; when installing transport anchoring screws in transport anchoring systems; in general solid-structured buildings; when installing concrete screws in wall structures; and in general furniture manufacturing.

[0012] By adjusting the inclination of the guide groove and the positioning of the contact plane, as well as using long bits, assembly aids can be optimized for different applications.

[0013] Existing screw-in aids, such as screw mounting angles, allow long screws to be driven into the wood surface at a predetermined angle. In the final 10 to 15 cm, the screw-in aid must be lifted from the wood surface, and the screw must then be turned by hand until it reaches the set position. Precise installation depth can be achieved by significantly reducing the screw-in speed in the last third of the installation process and slowly approaching the set position; if necessary, the position can be corrected by turning the screw in the opposite direction.

[0014] The spacer can be made of metal, plastic or fiber-reinforced plastic and can be manufactured using processes such as milling, injection molding or 3D printing.

[0015] According to one embodiment of the present invention, a method for inserting a fixing element into an anchoring base using this structure is provided. The method includes the following steps: receiving a bit in a receiving device of a bit holder; connecting a tool connector of the bit holder to a driving tool; placing a base plate on the anchoring base; bringing the bit into contact with the fixing element, preferably with the head of the fixing element; and introducing the bit holder and the fixing element into a spacer, preferably into a guide portion of the spacer. The order of these steps may be as described above, but is not limited thereto.

[0016] The method also includes a step for inserting, particularly rotating, the fixing element into the anchoring base, specifically by applying an insertion force to the fixing element using a bit, a drive tool, and a bit holder until the end face of the impact load protection device or the spacer ring of the bit holder abuts against the stop surface of the spacer device, thereby inserting the fixing element into the anchoring base to a predetermined depth; and a step for removing the spacer device, preferably by lateral displacement, wherein the fixing element passes through a lateral opening in a guide groove. When the bit holder is used in conjunction with the spacer device, no additional spacer ring is required. The spacer ring is only used for fine adjustment. The spacer device is suitable for operations where visibility requirements are not high and fine adjustment is not necessary.

[0017] Within the scope of this application, "bit" can specifically refer to a shankless, replaceable drive element (e.g., a screwdriver tip) with a defined profile (e.g., a screw head profile) for securing components. Examples of bit profiles include slotted, Phillips, hexagonal, star, and AW or RW profiles. For example, the hexagonal receiving end of a bit can be shaped such that the bit can be inserted into a correspondingly shaped bit holder.

[0018] Within the scope of this application, "bit holder" can specifically refer to an adapter in a drive tool-bit holder-bit assembly, one end of which is connected to the bit and the other end to the drive tool. The bit holder can be a separate component from the drive tool, or it can be designed or assembled as a fixed part of the drive tool (e.g., a handle or cordless screwdriver).

[0019] Within the scope of this application, "drive tool" can specifically refer to a device by which a driving force can be applied and transmitted to the bit via a bit holder. The driving force can be, in particular, a rotational or rotary driving force, and can be selectively superimposed with a translational driving force. In other words, a drive tool can be designed to rotate and drive the bit holder and bit, thereby driving a fixed element, its drive mechanism being torsionally connected to the bit. Alternatively, the driving force can also be a purely translational driving force. The driving force of a drive tool can be pneumatic, hydraulic, or electric, generated for example by a pneumatic device, hydraulic device, or electric motor, or it can be the user's muscle force. Examples of drive tools include cordless screwdrivers, cordless drills / screwdrivers, rotary screwdrivers, pulse screwdrivers, ratchet screwdrivers, drills, impact screwdrivers, and hammer drills. A user-rotatable handle with a connector that can be attached to a bit holder can also be used as a drive tool. Other examples of drive tools include screwdriver handles, bent handles, ratchet wrenches, or torque wrenches.

[0020] Within the scope of this application, "fixing element" can specifically refer to a body (particularly rotatable) that can be inserted into an anchor base by means of a bit holder and a drive tool. Preferably, the fixing element is a screw, more preferably a wood screw, for insertion into a wooden anchor base. Alternatively, the fixing element can also be, for example, a nail or rivet. The fixing element can be designed to be inserted into the anchor base without pre-drilling, or it can be designed to be inserted after pre-drilling. Fixing elements inserted by rotation can have self-tapping or self-embedding external threads.

[0021] Within the scope of this application, the term "anchor base" can specifically include bases suitable for anchoring fixed elements. Such anchor bases can be, in particular, walls, especially vertical walls or ceilings. Materials for such anchor bases specifically include wood or timber, but also concrete and masonry, metal or plastic components. Furthermore, such anchor bases can also be composite materials composed of a variety of different material components. Anchor bases can be hollow or solid (i.e., without cavities).

[0022] Within the scope of this application, "impact load protection device" can specifically refer to at least one form or mechanism capable of absorbing, shielding, reducing, mitigating, buffering, and / or absorpting impact loads acting on a bit holder (particularly the retaining sleeve of the bit holder) generated when the retaining element is inserted into the anchor base and the bit holder collides with the (particularly flat) outer surface of the anchor base. In other words, with an impact load protection device, the impact load acting on the remaining bit holder will be smaller than without it. For example, the impact load protection device can be designed as a disc, cylinder, or sphere to protect at least a portion of the bit holder from impact. The impact load protection device can also be designed as an electronic mechanism that uses sensors or similar devices to electronically measure the impact and send feedback information to an electrically driven tool. This feedback information stops the (rotational) operation of the drive tool, thereby stopping the (rotational) operation of the bit holder and thus protecting at least a portion of the bit holder from impact. For example, the impact load protection device can also include a spring (e.g., designed as a spring flange) or other preload element that cushions the impact of the bit holder against the anchor base. Suitable materials for impact load protection devices include metals (e.g., steel), plastics (especially rigid plastics), rubber (especially rigid rubber), and / or glass fiber materials or glass fiber reinforced materials.

[0023] Within the scope of this application, "obstacle" can specifically refer to an anchoring base or its surface. In the context of "structure," an obstacle can be formed by a stop or a spacer.

[0024] Additional exemplary embodiments of the bit holder, the structure, and the method are described below.

[0025] According to one embodiment, the spacer ring is configured to deflect against an obstacle when the fixing element is inserted into the anchoring base, thereby allowing the impact load protection device and the spacer ring to jointly limit the maximum sinking depth of the fixing element into the anchoring base.

[0026] According to one embodiment, the impact load protection device has an end face perpendicular to the insertion direction, particularly designed as an annular end face, with the inner surface of the spacer ring, particularly the inner annular surface, abutting against this end face.

[0027] According to one embodiment, the bit holder has at least one of the following features:

[0028] The spacer ring has an inner shell surface surrounding the outer shell surface of the impact load protection device, and preferably at least partially abuts against the outer shell surface;

[0029] A flange protruding radially inward is provided on the edge opposite to the inner surface of the spacer ring. The inner diameter of the inner shell gradually tapers along the flange. Preferably, the inner diameter at the flange is smaller than the inner diameter of the inner shell.

[0030] The spacer ring is made of an elastic material, preferably soft plastic or fiber-reinforced soft plastic;

[0031] Impact load protection devices can be interchangeably installed on the bit holder, especially by screwing them on.

[0032] The impact load protection device is fixedly installed on the bit holder;

[0033] The impact load protection device is integrally formed with the bit sleeve of the bit holder, especially welded and / or riveted to the bit sleeve;

[0034] The bit sleeve has an external thread, and the internal thread of the impact load protection device is tightened or can be tightened on the external thread.

[0035] According to one embodiment, the impact load protection device has an inclined surface that is opposite to the end face, arranged on the back side against the insertion direction, and oriented perpendicular to the insertion direction, particularly designed as an annular inclined surface.

[0036] According to one embodiment, the impact load protection device has an end face that extends radially inward from an annular inclined surface and is oriented perpendicular to the insertion direction, particularly designed as an annular end face.

[0037] According to one embodiment, the bit holder has at least one of the following features:

[0038] When the bit is contained in the receiving device, the impact load protection device extends around the bit in a circumferentially closed manner.

[0039] The impact load protection device is made of non-magnetic material;

[0040] The bit holder has a retaining sleeve for securing the bit to the receiving device, wherein the retaining sleeve is designed to selectively secure or release the bit received in the receiving device by means of moving the retaining sleeve.

[0041] This impact load protection device is designed to absorb the impact motion that would occur if the fixed sleeve of the bit holder were to hit an obstacle without the impact load protection device being equipped.

[0042] The bit holder has a bit sleeve that includes a receiving device, and a fixing sleeve is mounted on the bit sleeve;

[0043] The fixed sleeve is on the drive tool side and the impact load protection device is mounted on the bit sleeve on the bit side.

[0044] The fixed sleeve extends axially by a maximum of 50%, particularly a maximum of 40%, of the axial extension length along the bit sleeve.

[0045] The impact load protection device extends axially by a maximum of 30%, and particularly a maximum of 20%, along the axial extension length of the bit sleeve.

[0046] The receiving device has an internal hexagonal portion; the tool connector has an external hexagonal portion;

[0047] The impact load protection device protrudes radially from the rest of the bit holder along the entire circumference.

[0048] According to one embodiment, the spacer ring of the bit holder has at least one of the following features:

[0049] The height between the inner surface of the spacer ring and the opposite surface of the flange is 3 mm to 10 mm, preferably 4 mm to 6 mm;

[0050] The inner diameter of the flange is 28 mm to 22 mm, preferably 27 mm to 25 mm;

[0051] The inner diameter of the inner shell surface of the spacer ring is 27 mm to 29 mm, preferably 28 mm to 28.5 mm;

[0052] The outer diameter of the spacer ring is 29 mm to 34 mm, preferably 30 mm to 33 mm;

[0053] The wall thickness between the inner surface of the spacer ring and the opposite outer end surface of the spacer ring is 0.5 mm to 3 mm, preferably 1 mm to 2 mm.

[0054] According to one embodiment of the structure, the spacer ring has a guide portion, preferably a guide groove, for fixing the element, the guide portion extending perpendicular to the stop surface of the spacer device, wherein the guide portion preferably has an internal metal profile for preventing wear.

[0055] According to one embodiment of the structure, the guide has a fiber-reinforced plastic profile or a sleeve made of metal / plastic, the guide being alternatively arranged in a spacer ring, the sleeve preferably being held in the shaft of the spacer ring by a screw disposed in the shaft of the spacer ring; wherein, more preferably, a set of sleeves with different inner diameters is provided.

[0056] According to one embodiment of this structure, the guide portion preferably has a lateral opening configured to remove the spacer from the anchoring base when the fixing element is installed. After the spacer has been moved laterally to a predetermined position, the screw can be released through the lateral opening.

[0057] According to one embodiment of this structure, the guide portion is tilted at an angle relative to the anchoring base, wherein the tilt angle is preferably adjustable and fixed. This angle can be any angle less than 90° relative to the anchoring base.

[0058] According to one embodiment of the structure, the guide has a funnel-shaped widening at the entrance of the fixing element.

[0059] According to one embodiment, the structure has at least one of the following features:

[0060] The outer contour of the spacer is shaped like a handle;

[0061] The spacer has a base plate for resting on the anchoring base, wherein, preferably, protrusions protrude from the bottom side of the base plate to anchor the base plate, and / or preferably, the edge of the base plate is marked to indicate the position of the fixing element protruding from the base plate;

[0062] The spacer has a base plate for resting on the anchor base, wherein, preferably, at least one receiving portion for accommodating one or more bits is provided on the base plate, and / or preferably, a through hole is provided on the base plate through which screws can pass to temporarily fix the spacer to the anchor base, and more preferably, the through hole is provided in a raised segment on the base plate;

[0063] The spacer has an additional fixed handle, preferably with a groove in the handle into which the bit holder can be inserted or snapped to store the bit holder;

[0064] The spacer has a magnet or brush ring inside the guide section, which is designed to hold the fixing element;

[0065] The preferred fixing element is a wood screw.

[0066] According to one embodiment of the method, after the bit holder and fixing element are inserted into the spacer, and preferably after the bit contacts the fixing element, the spacer is tilted such that the fixing element is inserted substantially vertically into and pressed into the anchor base; then the base plate is laid flat on the anchor base. For example, the fixing element can be pressed into the anchor base to a depth of 1 to 2 mm. Depending on the screw type, the spacer can also be laid flat directly. Screws with ridge-shaped drill bits are more prone to displacement when screwed in at an angle compared to screws with ordinary tips. Attached Figure Description

[0067] Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0068] Figure 1 The diagram shows front views of bit holders with and without spacer rings according to exemplary embodiments of the present invention.

[0069] Figure 2 Top view, front view and sectional view of the spacer ring and bit holder according to an exemplary embodiment of the present invention are shown.

[0070] Figure 3This illustration shows a kit comprising a bit holder with a corresponding variable mounting depth and various spacer rings, according to an exemplary embodiment of the invention.

[0071] Figure 4 The diagram shows a front view, top view, sectional view, and perspective view of an interval device according to an exemplary embodiment of the present invention.

[0072] Figure 5 A cross-sectional view of a structure including a bit holder and a spacer device according to an exemplary embodiment of the present invention is shown.

[0073] Figure 6 The diagram shows a top view and a cross-sectional view of a structure including a bit holder and a spacer according to an exemplary embodiment of the present invention.

[0074] Figure 7 A perspective view of an interval device according to an exemplary embodiment of the present invention is shown.

[0075] Figure 8 A perspective view of a spacer device with a bit holder according to an exemplary embodiment of the present invention is shown.

[0076] Figure 9 and Figure 10 A side view of an interval device according to an exemplary embodiment of the present invention is shown.

[0077] Figure 11 Different views of the spacer device according to an exemplary embodiment of the present invention are shown.

[0078] Figure 12 A perspective view of a bit holder with bits mounted on it is shown.

[0079] Figure 13 A side view of a bit holder with bits mounted on it is shown.

[0080] Figure 14 Show Figure 13 The side view shown shows the bit holder separated from the bit.

[0081] Figure 15 Show Figure 13 and Figure 14 The side view shown is taken with the bit holder separated from the impact load protection device.

[0082] Figure 16 A side view of a bit holder with bits mounted on it is shown.

[0083] Figure 17 Showing according to Figure 16 The image shows a side view of a bit holder without the bit.

[0084] Figure 18 A side view of a bit holder with bits mounted on it is shown.

[0085] Figure 19 Showing according to Figure 18 The image shows a side view of a bit holder without the bit.

[0086] Figure 20 A perspective view of a bit holder with bits mounted on it is shown.

[0087] Figure 21 Showing according to Figure 20 Another perspective view of the bit holder shown.

[0088] Figure 22 Showing according to Figure 20 and Figure 21 Another perspective view of the bit holder shown.

[0089] Figure 23 Showing with Figure 22 A roughly corresponding three-dimensional view of a bit holder without the bit.

[0090] Figures 24 to 28 The image shows a side view of a bit holder with a bit installed during the process of inserting a fixing element into an anchor base.

[0091] Figures 29 to 31 The image shows a side view of a bit holder with a bit installed during the process of inserting a fixing element into an anchor base.

[0092] Figure 32 A side view of the impact load protection device for the bit holder is shown.

[0093] The same or similar parts in different drawings are given the same reference numerals. Detailed Implementation

[0094] Figure 1 The diagram shows front views of bit holders 100 with and without spacer rings according to an exemplary embodiment of the present invention, and... Figure 2 Top view, front view and sectional view of spacer ring 200 and bit holder 100 according to an exemplary embodiment of the present invention are shown.

[0095] The bit holder 100 is used to hold the bit 102 for engagement of the bit 102 with the drive tool 104. The bit holder 100 includes a receiving device 106 (see...). Figure 8 The receiving device is designed to receive the bit 102; the tool connector 108 is designed to connect with the drive tool 104 (e.g., Figure 13(Illustrated); and an impact load protection device 110, which is designed to protect against impact loads acting on the bit holder 100, and particularly on the retaining sleeve 124 of the bit holder 100, when the fixing element 114, which is to be driven by the bit 102, the drive tool 104, and the bit holder 100, is inserted into the anchoring base 112, particularly in a rotatable manner. The fixing element 114 may be, in particular, a wood screw. The obstacle 301 may be, in particular, the anchoring base 112 or the surface of the anchoring base.

[0096] The bit holder 100 also includes a spacer ring 200, which is detachably mounted on the impact load protection device 110 on one side along the insertion direction 119. The spacer ring 200 has a through-hole 202 configured to allow the retaining element 114 to pass through, so that the retaining element contacts the bit 102. The spacer ring 200 is configured to abut against the obstruction 301 when the retaining element 114 is inserted into the anchoring base 112, thereby allowing the impact load protection device 110 and the spacer ring 200 to together limit the maximum insertion depth of the retaining element 114 into the anchoring base 112.

[0097] The impact load protection device 110 has an end face 203 perpendicular to the impact load protection device 110, which is specifically designed as an annular end face 203, and the inner surface 204 of the spacer ring 200 (see Figure 2 In particular, the inner annular surface 204 rests against this end face. The opening 202 of the spacer ring 200 is aligned with the opening of the impact load protection device 110, which is mounted on the bit sleeve 126 through this opening. For example, the bit sleeve 126 may have an external thread 138, and the internal thread 140 of the impact load protection device 110 is tightened or can be tightened on the external thread 138. The opening 202 of the spacer ring 200 is aligned with the external thread 138 of the bit sleeve 126 and the internal thread 140 of the impact load protection device 110.

[0098] The spacer ring 200 also has an inner shell surface 205 that surrounds the outer shell surface 1101 of the impact load protection device 110 and preferably at least partially abuts against the outer shell surface. At the edge of the inner shell surface 205 of the spacer ring 200 opposite to the inner surface 204, a radially inwardly projecting flange 206 is provided. The inner diameter of the inner shell surface 205 gradually tapers along the flange, such that the inner diameter d3 at the flange 206 is smaller than the inner diameter d2* of the inner shell surface 205. The spacer ring 200 is made of an elastic material, preferably soft plastic or fiber-reinforced soft plastic. In this way, the spacer ring 200 can be easily inserted into the impact load protection device 110 and held by the flange 206.

[0099] The impact load protection device 110 is replaceably mounted on the bit holder 100, particularly in a screw-on manner. Alternatively, the impact load protection device 110 may be integrally formed with the bit sleeve 126 of the bit holder 100, for example, the impact load protection device may be welded and / or riveted to the bit sleeve 126. However, preferably, the bit sleeve 126 has an external thread 138 on which the internal thread 140 of the impact load protection device 110 is screwed or can be screwed.

[0100] The impact load protection device 110 may have an inclined surface 116, arranged on the back side and perpendicular to the insertion direction 119, opposite to the end face 203 and against the insertion direction 119, particularly designed as an annular inclined surface 116. The impact load protection device 110 may also have an end face 118 extending radially inward from the annular inclined surface 116 and perpendicular to the insertion direction 119, preferably designed as an annular end face 118. Figures 9 to 28 As shown, the impact load protection device 110 can be loosened and reversed to be tightened again, so that in other applications, the pure impact load protection function can be achieved without the spacer ring 200.

[0101] according to Figure 2 The height h* between the inner surface 204 of the spacer ring 200 and the opposite surface of the flange 206 is 3 to 10 mm, preferably 4 to 6 mm. The inner diameter d3 of the flange 206 is 28 to 32 mm, preferably 27 to 25 mm. The inner diameter d2* of the inner shell surface 205 of the spacer ring 200 is 27 to 29 mm, preferably 28 to 28.5 mm. The outer diameter d1 of the spacer ring 200 is 29 to 34 mm, preferably 30 to 33 mm. The wall thickness s between the inner surface 204 of the spacer ring 200 and the opposite outer end surface of the spacer ring 200 is 0.5 to 3 mm, preferably 1 to 2 mm.

[0102] Reference numeral 207 indicates an optional logo or mark that can be mounted on the spacer ring 200.

[0103] Fine adjustment of the screw head can be achieved via the spacer ring 200, primarily within the wood surface. The impact-resistant bit holder 100, used for working in wood, positions the screw head of countersunk screws (fixing element 114 with a drive size of RW40) flush with or slightly deeper than the wood surface by about 1 mm, making it ideal for screw installation in unseen applications. Smaller countersunk screws, such as those with a diameter of 4.5 mm, can be countersunk to a depth of about 1.5 to 2 mm in the anchoring base 112 using a smaller drive (e.g., RW20). The final countersunk depth can be adjusted based on the drive size, the shape and diameter of the screw head, and the depth to which the bit 102 countersunk the screw head.

[0104] For applications in visible areas, such as (wooden) exterior walls or (wooden) terraces, if small-head screws and a small driver (RW20) are used, the countersink depth of the screw head may be too excessive, or it is difficult to make the screw head completely flush with the wood surface. To solve this problem, spacer rings 200 with different thicknesses can be used. A suitable spacer ring 200 can be selected according to the required countersink depth and the selected screw type, and the spacer device is pushed onto the impact-resistant bit holder 100, so that the required countersink depth can be adjusted step by step. The dimensions of the spacer ring 200 are carefully selected such that its inner diameter d2* can fit over the outer diameter d2 of the impact load protection device 110 configured as a stop ring on the impact-resistant bit holder 100. The inner height h* of the spacer ring 200 corresponds to the height h of the impact load protection device 110 configured as a stop ring of the bit holder 100. A flange 206 tapers the spacer ring 200 to diameter d3. This reduction in diameter allows the spacer ring 200 to engage with the surface of the impact load protection device 110 configured as a stop ring of the impact-resistant bit holder 100, thereby holding it in place.

[0105] To ensure particularly good securing of the spacer ring 200 on the impact load protection device 110 of the impact-resistant bit holder 100, the spacer ring 200 can be made of soft plastic, fiber-reinforced soft plastic or similar materials. This also prevents the spacer ring 200 from leaving indentations on the wood surface.

[0106] Figure 3 A kit consisting of a bit holder 100 for different insertion depths and various spacer rings 200 according to an exemplary embodiment of the present invention is shown. The kit is also used for inserting a fastening element 114 into an anchoring base 112. The kit comprises a bit holder 100 for holding a bit 102, so as to couple the bit 102 with a driving tool 104, wherein the bit 102 is accommodated or can be accommodated by an accommodating device 106 of the bit holder 100; and a set of a plurality of spacer rings 200, wherein the spacer rings 200 have different wall thicknesses s1, s2 and s3 between the inner face 204 of the spacer ring 200 and the opposite outer end face of the spacer ring 200.

[0107] During the tightening process, compared with the impact-resistant bit holder 100 without a spacer ring, the impact-resistant bit holder 100 with the spacer ring 200 can release the screw head earlier, or the countersink depth of the screw head is shallower. This is because, depending on the thickness of the selected spacer ring 200, the use of the additional spacer ring 200 can reduce the position of the tip of the bit 102 relative to the surface of the impact load protection device 110 configured as a stop ring of the impact-resistant bit holder 100. If it is necessary to correct the insertion depth, the spacer ring 200 with a suitable wall thickness s is pushed onto the impact load protection device 110. The greater the wall thickness s (s1<s2<s3), the smaller the depth at which the screw head of the fastening element 114 sinks into the anchoring base 112.

[0108] Figure 4 The diagram shows a front view, top view, sectional view, and perspective view of the spacer 300 according to an exemplary embodiment of the present invention. Figure 5 A cross-sectional view showing the structure of the bit holder 100 and the spacer 300 according to an exemplary embodiment of the present invention is shown.

[0109] This structure is also used to insert the fixing element 114 into the anchoring base 112. This structure has a bit holder 100 for holding the bit 102 so as to connect the bit 102 to the drive tool 104; the bit 102 is received or can be received in a receiving device 106 of the bit holder 100; and a spacer 300 configured for insertion into the anchoring base 112, and receiving the bit holder 100 such that the end face 203 of the impact load protection device 110 or the spacer ring 200 abuts against the stop face 301 of the spacer 300 forming the obstacle 301 when the fixing element 114 is inserted into the anchoring base 112, such that the fixing element 114 is inserted into the anchoring base 112 only to a predetermined depth. In other words, the length L of the fixing element 114 (see...) Figure 5 It remains above the anchor base 112.

[0110] The spacer 300 has a guide portion 302 for fixing the element 114, preferably a guide groove 302. This guide portion extends perpendicularly to the stop surface 301 of the spacer 300, and the guide portion 302 preferably has an internal metal profile 309 (see...). Figure 5 To prevent wear, the guide portion 302 also has a lateral opening 303 configured to allow the spacer 300 to be removed from the anchoring base 112 when the fixing element 114 is inserted. The guide portion 302 is inclined at an angle α to the anchoring base 112, wherein, in a modification, this inclination angle is preferably adjustable and fixable. The guide portion 302 has a funnel-shaped widening portion 304 at the entrance of the fixing element 114 to facilitate easy and precise insertion of the fixing element 114 into the guide portion 302.

[0111] The outer contour of the spacer 300 is shaped into a handle. An ergonomic radius 310 is provided for this purpose. In particular, the area between the base plate 305 and the handle is ergonomically optimized with a rounded radius, achieving a good grip. The spacer 300 shown in the figure is optimized for right-handed users. For left-handed users, the spacer 300 can be mirror-symmetrically shaped.

[0112] The spacer 300 has a base plate 305 for resting on the anchoring base 112, wherein, preferably, protrusions 306 protrude from the bottom surface of the base plate 305, and / or preferably, markings 307 are provided on the edge of the base plate 305 to indicate the protrusion position of the fixing element 114 from the base plate 305. Furthermore, the spacer 300 may have a magnet or brush ring inside the guide portion 302, configured to retain the fixing element 114. The magnet itself is not shown in the figure, but it may be arranged at the height 311 of the stop surface 301.

[0113] Figure 6 The diagram shows a top view and a cross-sectional view of a structure with a bit holder 100 and a spacer 300 according to an exemplary embodiment of the present invention. A method for inserting a fixing element 114 into an anchoring base 112 using this structure may include the following steps.

[0114] Figure 6 The left side illustrates the following steps: receiving the bit 102 in the receiving device 106 of the bit holder 100; connecting the tool connector 108 of the bit holder 100 to the drive tool 104; placing the base plate 305 onto the anchoring base 112; bringing the bit 102 into contact with the fixing element 114, preferably with the head of the fixing element 114; and introducing the bit holder 100 and the fixing element 114 into the spacer 300, preferably into the guide groove 302 of the spacer 300. The sequence of steps can be as described above, but is not limited thereto.

[0115] Figure 6 The intermediate part includes the step of inserting the fixing element 114, particularly by rotating it into the anchoring base 112. An insertion force is applied to the fixing element 114 using a bit 102, a drive tool 104, and a bit holder 100 until the end face 203 of the impact load protection device 110 or the spacer ring 200 abuts against the stop face 301 of the spacer device 300, thereby inserting the fixing element 114 into the anchoring base 112 to a predetermined depth. Here, the fixing element 114 or its head is typically released from the bit 102.

[0116] Figure 6 The right side shows the steps of removing the spacer ring 300 by lateral displacement, wherein the fixing element 114 passes through the lateral opening 303 of the guide portion 302.

[0117] Alternatively, after the bit holder 100 and the fixing element 114 are installed into the spacer 300, preferably after the bit 102 contacts the fixing element 114, the spacer 300 is tilted so that the fixing element 114 is inserted substantially vertically into the anchoring base 112, and the fixing element is manually pressed into the anchoring base 112. Then, the base plate 305 is placed flat on the anchoring base 112. For example, the fixing element 114 can be pressed into the anchoring base 112 to a depth of 1 to 2 mm.

[0118] Figure 7 A perspective view of a spacer 300 according to an exemplary embodiment of the present invention is shown. The spacer 300 has another handle 308, thereby making the spacer 300 ergonomically designed and greatly simplifying the insertion of the fixing element 114.

[0119] According to the present invention, the bit holder 100 may be used with or without the spacer ring 200 and the spacer device 300 to screw in the fixing element or screw head at a distance defined from the surface of the anchor base.

[0120] Figure 8 A perspective view of a spacer 300 with a bit holder 100 according to an exemplary embodiment of the present invention is shown. Figure 8 The spacer 300 in the middle is Figure 7 A modification to the spacer 300: A recess 312 is provided in the handle 308, into which the bit holder 100 can be pushed and preferably locked. The recess 312 serves as a storage location for the bit holder 100. For this purpose, at least one receiving portion for storing different bits 102 can be provided on the preferably flat base plate 305. Furthermore, through holes 313 are provided at the corners of the base plate 305, through which screws can pass to temporarily fix the spacer 300 to the anchor base 112. Preferably, the through holes 313 are provided in the raised segments on the base plate 305, such as... Figure 8 As shown.

[0121] Figure 9 and Figure 10A side view of a spacer 300 according to an exemplary embodiment of the present invention is shown. Here, the inner metal profile 309 is designed as a sleeve 309 made of metal or plastic and is alternatively arranged. The sleeve 309 is fixed to the shaft of the spacer 300 by screws 314; here, the tip of the screw 314 is engaged in a circular hole 315 on the liner of the sleeve 309, thereby preventing the sleeve from slipping. Screws of different thicknesses can be used with the spacer 300 by varying the inner diameter of the sleeve 309. This specifically includes cylindrical head screws with diameters of 8.0 mm, 10.0 mm, and 12.0 mm. The sleeve 309 is shaped such that its liner gradually widens in a funnel shape at both ends to facilitate the introduction and removal of the fixing element 114 (i.e., the screw tip and screw head).

[0122] exist Figures 8 to 10 The spacer 300 shown does not have a lateral opening 303. Unlike the variant shown earlier, Figures 8 to 10 The spacer 300 is not removed from the anchor base 112 by lateral displacement, but by lifting it upward along the axial direction of the spacer 300 and pulling it back out.

[0123] When using screwdriver bits 102 of different lengths, the head of the fixing element 114 or the screw can be inserted flush with the longer screwdriver bit 102 into the anchoring base 112, which... Figure 10 As shown in the two figures above; or the fixing element 114 can be inserted using a shorter or medium-length bit 102, maintaining a distance L from the anchoring base 112, which is in Figure 10 The two images below are shown.

[0124] Figure 11 Different views of the spacer device 300 according to an exemplary embodiment of the present invention are shown. Logos and / or text 207 may be applied to one or both sides of the axis of the spacer device 300. For example, information 316 regarding the tilt may be provided on the front of the spacer device 300.

[0125] like Figures 12 to 32As shown, the impact load protection device 110 can be unscrewed from the bit sleeve 126, then rotated in the opposite direction and screwed back onto the bit sleeve 126 to achieve pure impact load protection in other applications where the spacer ring 200 is not used. Conventional bit holders can exhibit poor wobble when used in combination with wood screws, mechanical bit holders, and cordless screwdrivers. In such combinations, wood screws may wobble noticeably. For example, when screwed into acacia or engineered beech wood, the wood screw may even experience undesirable slippage. This leads to a significant accumulation of metal shavings on the bit, further reducing the bit / screw fit and potentially exacerbating subsequent screw slippage. Furthermore, the formation of metal shavings, especially when using magnetic bit holders, can cause them to adhere to the bit holder, further reducing installation quality.

[0126] The reverse impact load protection device 110 forms a stable mechanical bit holder 100, which can also be designed to be non-magnetic and significantly reduce wobbling. The inclined surface 116 of the reverse assembly of the impact load protection device 110 is preferably flush with the head of the fixing element. This preferably non-magnetic, mechanically reinforced bit holder 100 can be equipped with an integrated shock-resistant mechanism.

[0127] Especially in timber-framed construction, countersunk screws are often driven deeper than the wood surface. Excessive countersunk head causes the retaining sleeve 124 of the mechanical bit holder 100 to impact the wood surface and suffer significant shock. Repeated impacts of this kind can cause mechanical damage to the retaining sleeve 124 of the bit holder 100.

[0128] To overcome or at least mitigate these drawbacks, the impact load protection device 110 (preferably designed as a chamfered impact ring) is reversed, thus absorbing the impact motion completely or partially, thereby preventing or reducing damage to the fixed sleeve 124. The chamfer increases the tightening resistance, preventing the screw head from being countersunk too deeply. As the screw continues to rotate, the thread advances, bringing the two parts closer together until the bit 102 slides out of the drive mechanism. The permissible countersunk depth can be adjusted according to the protruding length of the bit 102 (i.e., the bit length). To ensure the durability of the impact ring 110, it can be mechanically hardened, and / or specially designed to buffer or reduce the impact force borne by the impact ring 110.

[0129] In designing such a bit holder 100, a relatively short retaining sleeve 124 can be combined with a relatively long bit sleeve 126 to accommodate the bit, allowing the impact ring 110 or other impact load protection device to be moved or fitted onto the bit sleeve 126 together with the retaining sleeve 124. Therefore, the dimensions of the bit sleeve 126 and the retaining sleeve 124 are advantageous for securing the threaded impact load protection device 110. This threaded impact load protection device 110 is particularly advantageous. Shortening the length of the stop mechanism or the retaining sleeve 124 helps prevent the bit holder 100 from becoming too long and ensures that the stop mechanism can still move.

[0130] Furthermore, it is advantageous to form a metric thread (preferably an external thread 138) at the end of the bit sleeve 126 facing the bit 102, so that the impact load protection device 110 can be screwed in replaceably. Since the impact load protection device 110 is subjected to a certain force during the operation of the bit holder 100, it is advantageous to replace it replaceably on the bit holder 100, so that the impact load protection device 110 can be replaced as a consumable part while continuing to use other parts of the bit holder 100. In other words, this allows the disc-shaped mechanical impact load protection device 110 to be screwed on as a consumable or replacement part.

[0131] Advantageously, the diameter of this impact protection disc 110 can be larger than the head diameter of the fixing element 114 (particularly larger than the screw head). For example, the core diameter of a countersunk screw operated using bit 102 and bit holder 100 can be 10 mm, and the corresponding screw head diameter can be 18.5 mm. In this case, for example, the diameter of the impact protection disc can be 20.5 mm, and the thickness of the impact protection disc can be 4 mm. For a core diameter of 8 mm, the diameter of the impact protection disc can be 18 mm; for a core diameter of 6 mm, the diameter of the impact protection disc can be 14 mm; and for a core diameter of 5 mm, the diameter of the impact protection disc 110 can be 11.5 mm. The removable nature of the threaded impact protection disc 110 facilitates the replacement of easily worn impact protection discs 110, and allows for deeper insertion into the threaded hole when screwing in countersunk screws, while also being compatible with the screw diameter.

[0132] In operation, the bit holder 100 can be combined with the bit 100 and a fixing element 114, preferably designed as a screw, and then the fixing element 114 can be screwed into the anchor base 112. The bit protrusion or bit length can be coordinated with the bit sleeve 126.

[0133] This allows for the manufacture of a stable, non-magnetic, mechanical bit holder 100 for use in timber-framed construction. The preferred application of this bit holder 100 is in the use of screws in timber-framed construction, particularly suitable for screws with core diameters between 5mm and 10mm. Experiments have shown that the mechanical structure of conventional bit holders is easily damaged when deeply screwing countersunk screws; therefore, users tend to prefer using 50mm bits or magnetic bit holders 100. The bit holder 100 can also be used flexibly when the fixing element 114 is recessed into the anchoring base 112. In this case, reliable mechanical impact protection can be ensured for the bit holder 100.

[0134] Figure 12 A perspective view of a bit holder 100 with bit 102 mounted is shown.

[0135] More accurately, Figure 12 Showing will Figure 12 Fixing elements not shown in the diagram Figures 24 to 31 (See attached figure 114) Loading Figure 12 Anchor base not shown in the image ( Figures 26 to 31 Structure 150 (reference numeral 112) in the attached drawing. The fixing element can be a wood screw, and the anchoring base can be a wooden anchoring base.

[0136] The structure 150 includes a metal bit holder 100 for securing a metal bit 102 to a drive tool (e.g., a cordless screwdriver), the drive tool being... Figure 12 Not shown in the diagram. Furthermore, structure 150 also includes a bit 102, such as... Figure 12 As shown, the bit 102 is housed in the receiving device 106 of the bit holder 100. Therefore, the bit holder 100 is used to hold the bit 102 on the drive tool, which can rotate the bit holder 100, thereby indirectly driving the bit 102 to rotate, and ultimately driving the fixed element that engages with the bit 102 to rotate.

[0137] like Figure 12 As shown, the bit holder 100 has the aforementioned receiving device 106 at one end, which is designed to securely receive the bit 102 within its receiving opening. An internal hexagonal portion can be formed within this receiving opening to receive the external hexagonal portion 144 of the bit 102. Furthermore, the bit holder 100 has a tool connector 108 at its opposite end, designed for securely engaging with a drive tool. Figure 12 As shown, the tool connector 108 has an external hexagonal portion 130 that can be accommodated in the chuck of the driving tool.

[0138] Furthermore, the bit holder 100 advantageously includes an impact load protection device 110 surrounding the end of the bit 102 housed in the receiving device 106. The impact load protection device 110 reduces the impact load experienced by the bit holder 100 when it impacts the anchor base at the end of the process of rotating the fixing element into the anchor base. In other words, when the fixing element, driven by the bit 102, the driving tool, and the bit holder 100, is deeply installed into the anchor base, the impact load protection device 110 prevents impact, damping, or absorption onto the anchor base. Figure 12 As shown, the impact load protection device 110 has an inclined surface 116 facing the anchor base during operation, which is designed as an annular inclined surface. Therefore, the impact load protection device 110 does not collide head-on with the outer surface of the anchor base, but rather collidees at an angle, thereby absorbing the impact force and transmitting the frictional force, thus providing mechanical protection for the bit holder 100. Furthermore, the impact load protection device 110 may also have an end face 118 oriented parallel to the anchor base 112 between the inclined surface 116 and the anchor base, which is preferably designed as a small annular end face 118. When the spacer ring 200 is not inserted, the annular end face 118 of the impact load protection device 110 can form the axial end of the bit holder 100. When inserted into the anchor base, the annular end face 118 initially forms a small contact area with the anchor base, thereby suppressing the tilting of the bit holder 100. Subsequently, the larger inclined surface 116 can contact the anchoring base, thereby reducing or absorbing the impact force that would otherwise act on the retaining sleeve 124 of the bit holder 100. The inclined surface 116 provides the user with sufficiently early tactile feedback, indicating that the outer surface of the anchoring base has been reached.

[0139] like Figure 12 As shown, the impact load protection device 110 has an approximately frustoconical annular segment 121 facing the anchoring base during operation. A disc-shaped annular segment 123 with a generally semi-circular periphery 125 is connected to the annular segment on its back side. These two annular segments 121 and 123 are integrally formed. With the bit 102 housed in the receiving device 106, the impact load protection device 110 can extend circumferentially around the bit 102, thereby providing impact protection in the radial direction as well. Advantageously, the impact load protection device 110 can also be made of a non-magnetic material to prevent metal particles from adhering to the bit holder 100, for example, preventing metal particles from falling off the fixing element during operation. Adhesion of metal particles can affect the accuracy of inserting the fixing element into the anchoring base using the bit holder 100 and the bit 102.

[0140] also, Figure 12As shown: The bit holder 100 has a cuff-shaped retaining sleeve 124 for selectively securing or releasing the bit 102 onto or from the receiving device 106. The retaining sleeve 124 is designed such that the bit 102 on the receiving device 106 can be activated or deactivated by moving the retaining sleeve 124 axially along the bit sleeve 126. If the retaining sleeve 124 is pushed forward toward the bit 102 (i.e., as...), Figure 12 (As shown to the left), the ball clamp (not shown) inside the retaining sleeve 124 that holds the bit 102 can be released, allowing the bit 102 to be easily removed from the receiving device 106. Conversely, if the retaining sleeve 124 is pushed back away from the bit 102 (i.e., as shown to the left), the ball clamp (not shown) inside the retaining sleeve 124 that holds the bit 102 can be released, allowing the bit 102 to be easily removed from the receiving device 106. Figure 12 (As shown, pushing to the right) allows the ball clamp inside the retaining sleeve 124 to engage the bit 102 and secure it to the receiving device 106. This mechanism can be advantageously operated with one hand.

[0141] The impact load protection device 110, as described above, advantageously absorbs the impact motion acting on the fixed sleeve 124 of the bit holder 100 when it comes into contact with the anchor base. Therefore, the impact load protection device 110 can effectively prevent damage or even destruction of the fixed sleeve 124. Figure 12 As shown, the front-mounted impact load protection device 110 can protect the fixed sleeve 124 behind it from direct mechanical impact with the anchor base.

[0142] Figure 12 It is also shown that the bit holder 100 includes a cuff-shaped bit sleeve 126, which includes a receiving device 106 to which a retaining sleeve 124 is fitted or pushed. Thus, the retaining sleeve 124 is fitted or pushed onto the bit sleeve 126 on the tool drive side. Furthermore, an impact load protection device 110 is mounted to the bit sleeve 126 on the bit side, for example, by screwing it onto the bit sleeve with a screw.

[0143] When the tool connector 108 is mounted on the drive tool, and the drive tip 152 of the bit 102 engages with the oppositely shaped drive mechanism of the fixing element head, which is inserted into the anchoring base with its tip, the bit holder 100, bit 102, and fixing element are also rotated by the rotation of the drive tool. This causes the fixing element, for example designed as a wood screw, to be rotary recessed into the anchoring base, for example, made of wood. If the fixing element is recessed deep into the anchoring base, such that its bit-side end (e.g., the screw head) also recesses into the anchoring base, the front surface of the impact load protection device 110 will contact the flat outer surface of the anchoring base at a certain recess depth. However, because the inclined surface 116 is inclined relative to the flat anchoring base, a direct frontal collision between the bit holder 100 and the anchoring base is avoided. Instead, an inclined frictional force transmission is generated, which helps to reduce the impact load acting on the bit holder 100. The rotation of the fixing element (including the bit holder 100) during insertion into the anchoring base generates significant friction when the impact load protection device 110 contacts the anchoring base. This friction inhibits the fixing element and bit holder 100 from sinking further into the anchoring base. This phenomenon helps reduce the impact load acting on the bit holder 100 and its fixing sleeve 124.

[0144] Since the impact load protection device 110 extends radially beyond the rest of the bit holder 100 along the entire circumference of the bit holder 100, the impact load protection device 110 can effectively protect the fixed sleeve 124 from lateral mechanical impacts.

[0145] Figure 13 A side view of a bit holder 100 with bit 102 mounted is shown. Figure 14 Showing according to Figure 13 A side view of the bit holder 100, but the bit 102 has been separated. Figure 15 Showing according to Figure 13 and Figure 14 The side view of the bit holder 100, but the bit 102 has been separated, and the impact load protection device 110 has also been separated. Figure 32 Showing according to Figures 13 to 15 Side view of the impact load protection device 110 of the bit holder 100.

[0146] In particular, Figure 15As shown, the impact load protection device 110 can be replaced and mounted on the bit holder 100. More precisely, the impact load protection device 110 can be screwed into or screwed into the external thread 138 of the bit sleeve 126. The internal thread 140 of the impact load protection device 110 can be screwed into the external thread 138 on the bit side end of the bit sleeve 126. In this way, the impact load protection device 110, which is particularly susceptible to mechanical stress during the installation of the fixing element, can be unscrewed from the bit holder 100 after wear, and a new impact load protection device 110 can be installed.

[0147] Optionally, one end of the bit sleeve 126 may protrude slightly along the axial or central axis 117 relative to the annular end face 118 of the impact load protector 110, forming a hollow cylindrical annular joint 120 (e.g., with an axial length of 1-2 mm), which transitions to the annular end face 118 at a step 122. The annular joint 120 can advantageously be used for front-to-face welding of the impact load protector 110 to the bit sleeve 126. This optional welding of the impact load protector 110 to the bit sleeve 126 is particularly advantageous if a particularly stable design of the bit holder 100 is required. Under particularly harsh operating conditions, the threaded impact load protector 110 may detach from the bit sleeve 126 during operation. Welding effectively prevents this from happening. Particularly high robustness can be achieved by welding the axial front and rear sides of the impact load protector 110 to the bit sleeve 126.

[0148] like Figure 15 As shown, the fixed sleeve 124 extends axially for only about 35% of the axial extension length l along the bit sleeve 126. The impact load protection device 110 extends axially for only about 20% of the axial extension length l along the bit sleeve 126. This allows the fixed sleeve 124 and the impact load protection device 110 to be mounted on the fixed sleeve 126 without adversely affecting their function and operation.

[0149] according to Figure 32 The acute angle β between the inclined surface 116 of the bit holder 100 and the central axis 117 deviates from a right angle by only about 15-20°. This angle β achieves a good compromise between good impact resistance and anti-tipping performance.

[0150] Figure 16 A side view of a bit holder 100 with bit 102 mounted is shown. Figure 17 Showing according to Figure 16 A side view of the bit holder 100, but without bit 102 installed.

[0151] according to Figure 16and Figure 17 (and Figure 32 (Different), when the spacer ring 200 is not installed, the annular end face 118 of the impact load protection device 110 forms the axial end of the bit holder 100. One end of the bit sleeve 126 is located inside the impact load protection device 110, or this end can be flush with the annular end face 118.

[0152] Figure 18 A side view of a bit holder 100 with bit 102 mounted is shown. Figure 19 Showing according to Figure 18 A side view of the bit holder 100, but without bits installed.

[0153] according to Figure 18 and Figure 19 The outer surface of the fixed sleeve 124 is provided with knurling 154 in at least sections, which makes it convenient for the user to fix or loosen the bit 102 by moving the fixed sleeve 124 back and forth on the bit sleeve 126. In other words, the knurling 154 makes it easier for the user to grip the fixed sleeve 124.

[0154] Figure 20 A perspective view of a bit holder 100 with bit 102 mounted is shown. Figure 21 Showing according to Figure 20 Another perspective view of the bit holder 100. Figure 22 Showing according to Figure 20 and Figure 21 Another stereoscopic view of the bit holder 100. Figure 23 Showing with Figure 22 A perspective view of the corresponding bit holder 100 without the bit.

[0155] Figures 20 to 23 The various components of the bit holder 100 are shown through their different spatial relationships. The figure illustrates various features of the bit holder 100. Especially... Figure 23 The diagram shows that the receiving device 106 has an internal hexagonal portion 128 for receiving the external hexagonal portion of the bit 102.

[0156] Figures 24 to 28 The image shows a side view of a bit holder 100 with bit 102 mounted on it during the process of inserting the fixing element 114 into the anchor base 112.

[0157] exist Figures 24 to 28The diagram illustrates a structure 150 consisting of a schematically shown drive tool 104, a bit holder 100, a bit 102, a retaining element 114, and an anchoring base 112. The chuck of the drive tool 104 (e.g., a cordless screwdriver) is connected to a tool connector 108 of the bit holder 100. The retaining element 114, designed for wood screws (e.g., ASSY® screws from the applicant Würth), has a recess on its head 134 that serves as a drive mechanism (not shown). The drive tip 152 of the bit 102 is inserted into this recess to transmit torque from the bit 102 to the retaining element 114. Figures 24 to 28 As shown, by rotating the drive tool 104, the fixing element 114 mounted on the bit 102 is rotated into the wooden anchor base 112.

[0158] like Figure 26 As shown, the outer diameter D of the impact load protection device 110 is greater than the maximum outer diameter d of the head 134 of the fixing element 114.

[0159] The method of installing the fixing element 114 into the anchoring base 112 using the screwdriver bit 102, the drive tool 104, and the bit holder 100 will be described in more detail below:

[0160] refer to Figure 24 The tool connector 108 of the bit holder 100 is connected to the drive tool 104. In addition, the bit 102 is housed in the receiving device 106 of the bit holder 100.

[0161] like Figure 25 As shown, the drive tip 152 of the bit 102 is introduced into the drive mechanism of the head 134 of the fixing element 114, thereby forming a surface locking.

[0162] refer to Figure 26 The fixing element 114 is then inserted into the anchoring base 112 by applying a combined axial and rotational force using a screwdriver bit 102, a drive tool 104, and a bit holder 100. This process can be performed after pre-drilling holes in the anchoring base 112 or without pre-drilling. During screwing, the external thread 156 on the shank of the fixing element 114 cuts mating threads into the anchoring base 112. Thus, the fixing element 114 can be inserted into the wooden anchoring base 112 and anchored there. According to... Figure 26 In this state, the end face of the head 134 of the fixing element 114 is flush with the flat outer surface of the anchor base 112.

[0163] refer to Figure 27The process of the retaining element 114 sinking deeper into the anchoring base 112 is illustrated. First, the head 134 of the retaining element 114 sinks further into the anchoring base 112, such that the bit 102 is also partially located inside the anchoring base 112. Therefore, as the retaining element 114 sinks into the anchoring base 112, the head 134 of the retaining element 114, driven by the bit 102, is inserted deeper into the anchoring base 112 beyond the outer surface of the base. Then, the inclined surface 116 of the impact load protection device 110 contacts the outer surface of the anchoring base 112. This inclined contact reduces the impact force acting on the bit holder 100. As the impact load protection device 110 rotates further to the outer surface of the anchoring base 112, strong friction also prevents the retaining element 114 from sinking deeper into the anchoring base 112 and further limits the load acting on the bit holder 100. Therefore, by equipping the bit holder 100 with an impact load protection device 110, the impact load on the bit holder 100 when it comes into contact with the anchor base 112 can be reduced, and thus the bit holder 100 is mechanically protected.

[0164] refer to Figure 28 As shown, the drive tool 104, together with the bit holder 100 and the bit 102, can be removed from the fixing element 104 that is inserted into the anchor base 112. The installation process is completed without damage to the bit holder 100.

[0165] Figures 29 to 31 The image shows a side view of the bit holder 100 and the bit 102 mounted thereon during the process of sinking the fixing element 114 into the anchor base 112.

[0166] refer to Figure 29 The illustration shows the use of the extended bit sleeve 126 and the standard length bit 102.

[0167] refer to Figure 30 This illustrates the use of standard length bit socket 126 and standard length bit 102.

[0168] refer to Figure 31 The diagram shows the use of the standard length bit socket 126 and the standard length bit 102. The shortened bit 102 is shown in the figure.

[0169] Figures 29 to 31 This shows that the length of the bit protrusion, bit 102, and bit sleeve 120 can be coordinated.

[0170] In addition, it should be noted that "having" does not exclude other elements or steps, and "a" or "one" does not exclude multiple. Furthermore, it should be noted that the features or steps described with reference to one of the above embodiments can also be used in combination with the features or steps described in the other above embodiments. Reference numerals in the claims should not be considered limiting.

Claims

1. A bit holder (100) for holding a bit (102) for connecting the bit (102) to a drive tool (104), wherein, The bit holder (100) includes: A receiving device (106) is designed to receive a bit (102). Tool connector (108), which is designed to be connected to a drive tool (104); The impact load protection device (110) is designed to protect against impact loads acting on the bit holder (100), and particularly on the retaining sleeve (124) of the bit holder (100), when the fixing element (114) driven by the bit (102), the drive tool (104), and the bit holder (100) is installed in the anchoring base (112), especially in a rotatable manner; and when the bit holder (100) collides with an obstacle (301). A spacer ring (200) is mounted on the impact load protection device (110) on one side in a removable manner along the insertion direction (119), wherein a through-hole (202) is provided in the spacer ring (200), the through-hole being configured to guide a fixing element (114) through so as to make the fixing element contact with the bit (102).

2. The bit holder (100) according to claim 1. in, The spacer ring (200) is configured to deflect against an obstacle (301) when the fixing element (114) is inserted into the anchor base (112), such that the impact load protection device (110) and the spacer ring (200) together limit the maximum sinking depth of the fixing element (114) into the anchor base (112).

3. The bit holder (100) according to any one of the preceding claims, wherein, The impact load protection device (110) has an end face (203) perpendicular to the insertion direction (119), the end face (203) being designed in particular as an annular end face (203), the inner surface (204) of the spacer ring (200), in particular the inner annular surface (204), abutting the end face.

4. The bit holder (100) according to claim 3. in, The impact load protection device (110) has an inclined surface (116) that is opposite to the end face (203), arranged on the back side against the insertion direction (119), and oriented perpendicular to the insertion direction (119). The inclined surface is particularly designed as an annular inclined surface (116).

5. The bit holder (100) according to claim 4, wherein, The impact load protection device (110) has an end face (118) that extends radially inward from an annular inclined surface (116) and is oriented perpendicular to the insertion direction (119), the end face (118) being specifically designed as an annular end face (118).

6. The bit holder (100) according to any one of the preceding claims comprises at least one of the following features: The spacer ring (200) has an inner shell surface (205) that surrounds the outer shell surface (1101) of the impact load protection device (110) and preferably at least partially abuts against the outer shell surface; A radially inwardly protruding flange (206) is provided on the edge of the inner shell surface (205) relative to the inner surface (204) of the spacer ring (200). The inner diameter of the inner shell surface (205) gradually tapers along the flange. Preferably, the inner diameter (d3) at the flange (206) is smaller than the inner diameter (d2*) of the inner shell surface (205); The spacer ring (200) is made of an elastic material, preferably soft plastic or fiber-reinforced soft plastic.

7. The bit holder (100) according to any one of the preceding claims comprises at least one of the following features: The impact load protection device (110) is installed in a replaceable manner, particularly screwed onto the bit holder (100); The impact load protection device is fixedly installed on the bit holder; The impact load protection device (110) is integrally constructed with the bit sleeve (126) of the bit holder (100), and is particularly welded and / or riveted to the bit sleeve (126); The bit sleeve (126) has an external thread (138), and the internal thread (140) of the impact load protection device (110) is tightened or can be tightened on the external thread (138); With the bit (102) housed in the receiving device (106), the impact load protection device (110) extends around the bit (102) in a circumferentially closed manner; The impact load protection device (110) is made of non-magnetic material; The bit holder (100) has a retaining sleeve (124) for fixing the bit (102) to the receiving device (106), wherein, The retaining sleeve (124) is designed to selectively secure or release the bit (102) housed in the receiving device (106) by pushing the retaining sleeve (124). The impact load protection device (110) is designed to absorb the impact motion of the fixed sleeve (124) of the bit holder (100) when it collides with an obstacle (301) without the impact load protection device (110) being equipped; The bit holder (100) has a bit sleeve (126) having a receiving device (106) in particular, and a fixing sleeve (124) is fitted on the bit sleeve; The fixed sleeve (124) is mounted on the drive tool side and the impact load protection device (110) is mounted on the bit sleeve (126) on the bit side; The fixed sleeve (124) extends axially along the axial extension length (L) of the bit sleeve (126) by a maximum of 50%, particularly a maximum of 40%. The impact load protection device (110) extends axially along the axial extension length (L) of the bit sleeve (126) by a maximum of 30%, particularly a maximum of 20%. The receiving device (106) has an internal hexagonal portion (128); The tool connector (108) has an external hexagonal portion (130); The impact load protection device (110) protrudes radially from the rest of the bit holder (100) along the entire circumference of the bit holder (100).

8. The bit holder (100) according to any one of the preceding claims, comprising at least one of the following features: The height (h*) between the inner surface (204) of the spacer ring (200) and the opposite surface of the flange (206) is 3-10 mm, preferably 4-6 mm; The inner diameter (d3) at the flange (206) is 28-22 mm, preferably 27-25 mm; The inner diameter (d2*) of the inner shell surface (205) of the spacer ring (200) is 27-29 mm, preferably 28-28.5 mm; The outer diameter (d1) of the spacer ring (200) is 29-34 mm, preferably 30-33 mm; The wall thickness (s) between the inner surface (204) of the spacer ring (200) and the opposite outer end surface of the spacer ring (200) is 0.5-3 mm, preferably 1-2 mm.

9. A kit for inserting a fixing element (114) into an anchoring base (112), the kit comprising: A bit holder (100) for holding a bit (102) according to any one of the preceding claims, for connecting the bit (102) to a drive tool (104); Screwdriver bit (102), said screwdriver bit being received or being able to be received on the receiving device (106) of said screwdriver bit holder (100); and A set of multiple spacer rings (200) having different wall thicknesses (s1, s2, s3) between the inner surface (204) of the spacer ring (200) and the opposite outer end surface of the spacer ring (200).

10. A structure for inserting a fixing element (114) into an anchoring base (112), the structure comprising: A bit holder (100) for holding a bit (102) according to any one of claims 1 to 8, for connecting the bit (102) to a drive tool (104); Screwdriver bit (102), said screwdriver bit being received or being able to be received in a receiving device (106) of a screwdriver bit holder (100), and A spacer (300) is configured to be inserted into an anchor base (112) and to accommodate a bit holder (100) in such a way that when a fixing element (114) is inserted into the anchor base (112), the end face (203) of the impact load protection device (110) or the spacer ring (200) abuts against the stop face (301) of the forming barrier (301) of the spacer (300), thereby ensuring that the fixing element (114) is inserted into the anchor base (112) to a predetermined depth.

11. The structure according to claim 10, wherein, The spacer (300) has a guide (302), preferably a guide groove (302), for fixing the element (114), the guide extending perpendicular to the stop surface (301) of the spacer (300), wherein the guide (302) preferably has an internal metal profile (309) to prevent wear.

12. The structure according to claim 11, wherein, The guide (302) has a fiber-reinforced plastic profile or a sleeve (309) made of metal or plastic, the sleeve being arranged in a replaceable manner in the spacer (300), the sleeve (309) preferably being held in the shaft of the spacer (300) by a screw (314) provided in the shaft of the spacer (300); wherein, more preferably, a set of sleeves (309) with different inner diameters is provided.

13. The structure according to claim 11 or 12, wherein, The guide (302) has a lateral opening (303) configured to remove the spacer (300) from the anchor base (112) when the fixing element (114) is inserted.

14. The structure according to any one of claims 11 to 13, wherein, The guide (302) is inclined at an angle relative to the anchor base (112), wherein the inclination angle is preferably adjustable and fixed.

15. The structure according to any one of claims 11 to 14, wherein, The guide (302) has a funnel-shaped widened portion (304) at the entrance of the fixing element (114).

16. The structure according to any one of claims 10 to 15, comprising at least one of the following features: The outer contour of the spacer (300) is shaped like a handle; The spacer (300) has a base plate (305) for placement on the anchor base (112), wherein, Preferably, a protrusion (306) protrudes from the bottom surface of the base plate (305), and / or wherein, Preferably, a mark (307) is provided on the edge of the base plate (305), the mark indicating the position where the fixing element (114) extends from the base plate (305); The spacer (300) has a base plate (305) for placement on the anchor base (112), wherein, preferably, at least one receiving portion for one or more bits (102) is provided on the base plate (305), and / or preferably, a through hole (313) is provided in the base plate (305) through which a screw can be guided to temporarily fix the spacer (300) to the anchor base (112), wherein, more preferably, the through hole (313) is provided in a raised segment on the base plate (305); The spacer (300) has another handle (308), in which a notch (312) is preferably provided, into which the bit holder (100) can be pushed or snapped to store the bit holder (100). The spacer (300) has a magnet or brush ring inside the guide portion, which is configured to hold the fixing element (114). The fixing element (114) is a wood screw.

17. A method for inserting a fixing element (114) into an anchoring base (112) using the structure according to any one of claims 10 to 16, the method comprising: The bit (102) is housed in the receiving device (106) of the bit holder (100); Connect the tool connector (108) of the bit holder (100) to the drive tool (104); Place the base plate (305) onto the anchor base (112); The bit (102) is brought into contact with the fixing element (114), preferably with the head of the fixing element (114); The bit holder (100) and the fixing element (114) are introduced into the spacer (300), preferably into the guide (302) of the spacer (300); By applying an insertion force to the fixing element (114) using a bit (102), a drive tool (104), and a bit holder (100), the fixing element (114) is inserted into, particularly rotated into, the anchoring base (112) until the end face (203) of the impact load protection device (110) or the spacer ring (200) of the bit holder (100) abuts against the stop face (301) of the spacer device (300), thereby inserting the fixing element (114) into the anchoring base (112) to a predetermined depth; and The spacer (300) is preferably removed by lateral displacement, wherein the fixing element (114) passes through the lateral opening (303) of the guide (302).

18. The method of claim 17, wherein: After the bit holder (100) and the fixing element (114) are introduced into the spacer (300), and preferably after the bit (102) comes into contact with the fixing element (114), the spacer (300) is tilted in such a way that the fixing element (114) is inserted substantially vertically into the anchor base (112) and pressed into the anchor base (112); and The base plate (305) is then placed flat on the anchor base (112).

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