Door handle, door fitting and handle construction kit

Abstract

The invention relates to a door handle (10) for a door fitting (100), wherein the door handle (10) has a handle body (12) with a handle part (14) and a neck part (16) connected to the handle part (14), wherein the neck part (16) extends away from the handle part (14), wherein the neck part (16) has an end-face open recess (20) at the end facing away from the handle part (14), which is bounded externally by an end face (22), wherein the recess (20) has an inner contour (24), wherein a connecting piece (26) is inserted into the recess (20), which has an outer contour (29) corresponding to the inner contour (24) in an insertion section (28) and projects beyond the end face (22) of the neck part (16) with a projection section (30), wherein the connecting piece (26) is connected by a The weld seam (32) applied to the end face (22) is welded to the neck part (16), in particular at the inner edge of the end face (22).

Description

[0001] The invention relates to a door handle for a door fitting according to the preamble of claim 1. The invention further relates to a door fitting and a handle assembly with the features of the dependent claims. Finally, the invention relates to a method for manufacturing a door handle according to the further dependent claim.

[0002] Door handles and door fittings of the type mentioned above are known from the prior art and are used, for example, on building doors to open and close them. Door handles and door fittings exist in many different designs. For example, the applicant offers a range of handles that includes several series of handles, which differ in their surface finish, shape, material, and sometimes also in their design (standard or panic version).

[0003] These types of door handles consist of a handle body with a grip section and a neck section connected to the grip section, allowing the handle to be coupled to a door fitting or a locking device attached to the door leaf. Since door fittings and locking devices use spindles with different spindle sizes (7, 8, 8.5, 9, or 10 millimeters), the handle body of the door handle must be adapted to the corresponding spindle size at the neck section. This means that offering a comprehensive range of door handles requires stocking various models with different spindle sizes. Besides the necessary warehousing, this results in high costs for small production runs. Consequently, this limits the flexibility and cost-effectiveness of such a product line.

[0004] The invention aims to enable flexible and cost-effective manufacturing of door handles using simple design elements. A reduction in storage costs is also desirable.

[0005] The invention solves this problem by means of a door handle with the features of claim 1.

[0006] The door handle is designed and / or intended for use with a door hardware. The door handle consists of a handle body with a grip section and a neck section connected to the grip section. A person can grasp the handle body at the grip section and operate the door handle. The neck section connects the handle body to the door hardware. Optionally, there may be a transition section between the handle body and the neck section. The neck section extends away from the handle body, for example, at a right angle.

[0007] The neck section has a recess open at the end furthest from the handle section, which is bounded radially outwards by a front surface (the front surface of the neck section wall). The recess has an internal contour or geometry.

[0008] The door handle also features a connecting piece, which in turn has an insertion section and a projection section. The connecting piece is inserted into the recess and, in the insertion section, has an outer contour / geometry corresponding to the inner contour / geometry. The inner and outer contours are thus adapted to each other in such a way that the connecting piece can be inserted correctly into the opening. When inserted, the connecting piece with its projection section extends beyond the end face of the neck. The connecting piece is welded to the neck by a weld seam applied to the end face, specifically at the (radially) inner edge of the neck's end face.

[0009] The proposed door handle reduces inventory, as it does not need to be stored fully assembled. Instead, the handle body can be joined and welded to the matching connector. The weld on the neck and connector is not visible from the outside (radially). When the door handle is mounted on a door hardware, the weld faces the hardware and is concealed, for example, by a bearing element (slide bearing). This allows the connector to be joined and welded to the handle body without damaging the handle or its finish. The handle body, particularly the handle section and neck, is free of visible welds on the outer surface (weld-free surface design).

[0010] In a preferred embodiment, the overhanging section can be offset adjacent to the insertion section. In other words, a step is formed at the transition from the insertion section to the overhanging section. The overhanging section can have smaller external dimensions (e.g., a smaller outer diameter) or larger external dimensions (e.g., a larger outer diameter) than the insertion section or its outer contour. Smaller external dimensions in the overhanging section create a defined bearing surface for a sliding bearing in the door hardware. Furthermore, accessibility to the end face of the neck section is improved, which facilitates (end-face) welding.Larger external dimensions in the overhang section facilitate the assembly of the connector and handle body, as the connector can only be inserted into the recess in the neck section up to the outwardly projecting shoulder (defined stop). The first part of the overhang section can have a constant external dimension (e.g., constant diameter).

[0011] The protruding section can be advantageously tapered conically at the end opposite the insertion section. In other words, the protruding section can be tapered conically in a second subsection (a second subsection with a diameter that tapers conically towards the free end). The conical taper facilitates the insertion of the connecting piece into a corresponding opening in the door hardware. Furthermore, it can provide better support for a lever handle spindle.

[0012] Specifically, the projecting section adjacent to or within the conically tapered area (second subsection) can have a circumferential groove for a shaft retaining ring. This allows for simple securing of the connecting piece, and thus the entire door handle, to the door hardware. Specifically, the groove in the second subsection can be located adjacent to the first subsection of the projecting section. A shaft retaining ring can be provided for securing it. One or more shims can be provided for fine adjustment.

[0013] Advantageously, the connecting piece can have a through-hole or blind hole extending along its central longitudinal axis, with a polygonal cross-section, in particular a square cross-section. This allows the connecting piece, and thus the entire door handle, to be coupled to a handle spindle or handle square of a door fitting or door set, which can be a conventional or an electrically coupled door fitting. Optionally, an electrically operated actuator can be arranged in the through-hole or blind hole to create an electrically coupled fitting.

[0014] A transverse bore can be advantageously provided, penetrating the neck and insertion section of the connecting part and opening into the through-hole or blind hole. This transverse bore allows for the fixing of a spindle or square drive relative to the neck and thus relative to the door handle as a whole. The transverse bore can optionally have an internal thread.

[0015] In an alternative embodiment, the connecting piece can have an (axially) projecting pin with a polygonal cross-section, in particular a square cross-section, at its end facing away from the insertion section. The pin is designed and / or intended for coupling with an electrically coupling door fitting. The pin can be arranged in the through-hole or blind hole of the connecting piece or, instead of a through-hole or blind hole, be designed as a projecting component integrally connected to the connecting piece.

[0016] Specifically, the neck of the handle body can be formed in one piece. This reduces the number of components of the door handle and, due to its monolithic design, contributes to high stability. Alternatively, the handle body can have a rotating component welded to the neck. This rotating component can be located at the end of the neck opposite the handle body and welded to it. With appropriate dimensioning of the rotating component, the stability of the neck at the end opposite the handle body can be increased, and the connection to the connecting piece can be stabilized.

[0017] The aforementioned problem is also solved by a door fitting with the features of the dependent claim. Regarding the advantages achievable thereby, reference is made to the relevant explanations concerning the door handle.

[0018] The door fitting comprises a fitting body for attachment to the door leaf and / or for concealing components of a locking device arranged in the door leaf, as well as a door handle with one or more of the aspects described above. The door handle is pivotally mounted on a bearing element attached to the fitting body about a pivot axis, in particular at the projecting section of the connecting piece.

[0019] Specifically, a bearing ring can be attached to the fitting body as a bearing element. This bearing ring supports a sliding bearing on which the protruding section of the connecting piece, in particular its first subsection, is mounted. The connecting piece can be secured to the bearing ring by means of a shaft retaining ring inserted into the circumferential groove of the protruding section, optionally with the aid of one or more shims. The end face of the neck section and the weld seam applied to the end face are concealed from the fitting body.

[0020] The sliding bearing can rest against the end face of the neck part, for example by means of an outwardly projecting collar. The door fitting or a locking device coupled to the door fitting, which can be located in the door leaf (mortise lock), for example, can have an electrical coupling device (electrically coupling fitting).

[0021] The measures described above and / or explained below can be used to further design the door fitting.

[0022] The aforementioned problem is also solved by a modular door handle system with the features of the further subordinate claim. Regarding the advantages achievable thereby, reference is made to the relevant explanations concerning door handles.

[0023] The lever handle kit comprises a door handle with one or more of the aspects described above. The lever handle kit also includes at least one additional handle body and at least one additional connecting piece.

[0024] In other words, a modular lever handle system is proposed, comprising two or more handle bodies and two or more connecting pieces. Each handle body has a handle section and an associated neck section, the latter featuring a recess with a defined internal contour / geometry at the end opposite the handle section. Each connecting piece has an insertion section and a projection section, and the insertion section has a defined external contour / geometry that corresponds to the internal contour / geometry of the recess on the neck section of the handle. Thus, each connecting piece fits each of the handle bodies (the insertion section of each connecting piece can be inserted into the recess of each handle body), allowing the desired door handle to be manufactured using the lever handle system by selecting, assembling, and welding the appropriate handle section to the appropriate connecting piece.

[0025] The additional handle body advantageously features a neck section with a further recess open at the end face, which is bounded externally by an end face. This further recess has a further internal contour / geometry that corresponds to the (first) internal contour / geometry of the (first) recess (the handle bodies have the same internal contour at the neck section). This facilitates compatibility, as not only the handle body but also the additional handle body can be coupled to the connector. In other words, the connector, with its insertion section, can be fitted into the recess of both the neck section of the handle body and the additional handle body.

[0026] Specifically, the additional connector in an insertion section can have a further outer contour that matches the outer contour of the (first) connector (connectors have the same outer contour in the insertion section). This facilitates compatibility, as not only the connector but also the additional connector can be coupled to the handle body(s). In other words, the connectors, with their insertion sections, can each be fitted into the recess of the neck part of the handle body as well as into the recess of the additional handle body.

[0027] The handle body and the other handle components can suitably differ in their shape, particularly in the shape of their respective handle parts. This allows the lever handle system to provide a comprehensive lever handle program with handle bodies of varying shapes.

[0028] Advantageously, the additional connecting piece can have a through or blind hole extending along its central longitudinal axis, with a polygonal cross-section, in particular a square cross-section, wherein the through or blind hole of the additional connecting piece differs in cross-section from the through or blind hole of the (first) connecting piece. Thus, by selecting the appropriate connecting piece, the door handle can be adapted to the required cross-section of the handle spindle, e.g., a square handle spindle.

[0029] The measures described above and / or explained below can be used to further develop the door handle kit.

[0030] The aforementioned problem is also solved by a method for manufacturing a door handle with the features of the further dependent claim. Regarding the advantages achievable thereby, reference is made to the relevant explanations concerning the door handle.

[0031] The process for manufacturing a door handle comprises the following steps: Providing a handle body comprising a handle part and a neck part projecting from the handle part, wherein a recess open at the end face is formed on the neck part facing away from the handle part, providing a connecting piece comprising an insertion section and a projection section, assembling the handle body and the connecting piece by inserting the insertion section into the recess on the neck part, and welding the connecting piece to the neck part by applying a weld seam to an end face that limits the recess on the neck part to the outside (radially).

[0032] In a preferred embodiment, the handle body can be selected from several available handle bodies (modular system or lever handle kit) before it is provided. In this way, a door handle with the desired handle body can be manufactured or provided. Analogous to the description above, each handle body has a handle section and an associated neck section. The neck section extends away from the handle section and has an open-ended recess at the end furthest from the handle section. This recess is bounded (radially) outwards by an end face (wall of the neck section), and the recess has an inner contour. The measures described above can be used for further shaping of the handle body.

[0033] The connecting piece can be conveniently selected from several available connecting pieces (modular system or lever handle system) before it is provided. This allows a door handle with the desired spindle connection size to be supplied. As described above, each connecting piece has an insertion section and a projection section. The measures described above can be used for further customization of the connecting piece.

[0034] Optionally, a transverse bore can be formed that penetrates the neck and insertion section of the connecting part and opens into the through hole or blind hole. This allows for the insertion of a locking screw, which can be used to fix the door handle relative to a spindle. The transverse bore can optionally have an internal thread.

[0035] The invention is explained in more detail below with reference to the figures, where identical or functionally identical elements are provided with identical reference numerals, possibly only once. The figures show: Fig. 1a-1 shows an embodiment of a door handle in the unconnected state ( Figure 1a ), in the compound state ( Figure 1b ) and in the welded state ( Figure 1c ), each in a perspective view; Fig. 2a-2 legs further embodiment of a door handle in the unconnected state ( Figure 2a ) and in the assembled and welded state ( Figure 2b ), each in a perspective view; Fig. 3a - 3-legged door fitting with a door handle made of Figures 1a to 1c in a perspective view ( Figure 3a ) and a partially cropped view ( Figure 3b ); and Fig. 4a-4, first enlarged section of the door handle from Figures 3a and 3b ( Figure 4a ) and a second, even larger section ( Figure 4b ).

[0036] The Figures 1a to 1c show a door handle, which is generally designated with the reference symbol 10.

[0037] The door handle 10 has a handle body 12 with a grip section 14 and a neck section 16 connected to the grip section 14. A person can grasp the handle body 12 at the grip section 14 and operate the door handle 10 accordingly. The neck section 16 serves to connect the handle body 12 to a door fitting 100 (described further below). A transition section 18 is located between the grip section 14 and the neck section 16. In this example, the neck section 16 extends at a right angle from the handle body 14. The neck section 16 is formed in one piece.

[0038] The neck section 16 has a recess 20 open at the end facing away from the handle section 14, which is bounded radially outwards by an end face 22. The recess 20 has an inner contour or internal geometry 24.

[0039] The door handle 10 further comprises a connecting piece 26, which in turn has an insertion section 28 and a projection section 30. The connecting piece 26 has an outer contour or geometry 29 in the insertion section 28 that corresponds to the inner contour 24 of the recess 20. The inner contour 24 and the outer contour 29 are adapted to each other in such a way that the connecting piece 26 can be inserted correctly into the opening 20.

[0040] In the assembled state, the connecting piece 26 is inserted into the recess 20 (see figure). Figure 1b and 1cIn the installed state, the connecting piece 26 with the projecting section 30 extends beyond the end face 22 of the neck part 16. The connecting piece 26 is welded to the neck part 16 by a weld 32 applied to the end face 22, in this example at the radially inner edge of the end face 22 of the neck part 16. As explained above, the weld 32 is not visible from the radial outside when the door handle 10 is mounted on the door fitting 100. The handle body 12, in particular the handle part 14 and the neck part 16, are free of visible welds.

[0041] The overhanging section 30 is offset adjacent to the insertion section 28. In other words, a shoulder 34 is formed at the transition from the insertion section 28 to the overhanging section 30. In this example, the overhanging section 30 has a smaller outer diameter than the insertion section 28.

[0042] In a first subsection 30', the overhanging section 30 has a constant outer diameter (cf. Figure 1c ). In a second subsection 30'', the overhanging section 30 is conically tapered at an end facing away from the insertion section 28 (outer diameter tapering conically towards the free end).

[0043] The protruding section 30 has a circumferential groove 35 for a shaft retaining ring in the conically tapered area (second subsection 30'') adjacent to the first subsection 30'. The connecting piece 26 has a through or blind hole 36 extending along its central longitudinal axis M with a polygonal cross-section, in this example a square cross-section.

[0044] Optionally, a transverse bore 38 can be provided, which penetrates the neck part and the insertion section 28 of the connecting part 26 and opens into the through-hole or blind hole 36 (see figure). Figure 1c ).

[0045] Figures 2a and 2bshow another embodiment of a door handle 10 in the unconnected state ( Figure 2a ) and in the assembled and welded state ( Figure 2b ), which are largely related to the Figures 1a to 1c The described embodiment corresponds to the embodiment described, so that reference is made to the explanations given there to avoid repetition.

[0046] In contrast, the handle body 12 has a turned part 40 connected to the neck part 16, which is arranged at the end of the neck part 16 facing away from the handle part 14 and is welded to the neck part 16. The turned part 40 extends the neck part 16 and its opening 20 with inner contour 24. In the assembled state, the connecting piece 26 is inserted into the turned part 40 and the neck part 16 ( Figure 2b The connecting piece 26 is welded to the turned part 40 by a weld 32 applied to the end face 42 of the turned part 40.

[0047] Furthermore, in the connecting piece 26, the paragraph 34 is designed such that the overhanging section 30 has a larger outer diameter than the insertion section 28 ( Figure 2a ). This creates a stop between the overhanging section 30 and the insertion section 28, which limits the insertion of the connecting piece 26 into the opening 20.

[0048] The Figures 3a to 4b show a door fitting 100 with a door handle 10 made of Figures 1a to 1c The door fitting 100 comprises a fitting body 102 for attachment to the door leaf 104 or for covering components of a locking device arranged in the door leaf 104 (not shown). Furthermore, the fitting body 100 comprises a door handle 10 with one or more of the aspects described above.

[0049] A bearing element 106 is attached to the fitting body 102. The door handle 10 is pivotally mounted on the fitting body 102 about a pivot axis 107 on the bearing element 106. In this example, the door handle 10 is pivotally mounted on the bearing element 106 via the projection section 30 of the connecting piece 26.

[0050] Specifically, a bearing ring, which carries a sliding bearing 108, is attached to the impact body 102 as a bearing element 106. The projecting section 30 of the connecting piece 26, in this example its first subsection 30', is supported on the sliding bearing 108. The connecting piece 26 is secured to the bearing ring by means of a shaft retaining ring 110 inserted into the circumferential groove 35 of the projecting section 30, with the aid of a shim 112. The end face of the neck section 16 and the weld seam 32 applied to the end face are concealed from the fitting body 102. The sliding bearing 108 rests against the end face of the neck section 16, in this example by means of an outwardly projecting flange 114.

[0051] A lever handle kit and a method for manufacturing a door handle can be designed as described above.

Claims

1. Door handle (10) for a door fitting (100), wherein the door handle (10) has a handle body (12) with a handle part (14) and a neck part (16) connected to the handle part (14), wherein the neck part (16) extends away from the handle part (14), characterized by the fact that The neck part (16) has a recess (20) open at the end facing away from the handle part (14), which is bounded externally by an end face (22), wherein the recess (20) has an inner contour (24), wherein a connecting piece (26) is inserted into the recess (20), which has an outer contour (29) corresponding to the inner contour (24) in an insertion section (28) and projects beyond the end face (22) of the neck part (16) with a projection section (30), wherein the connecting piece (26) is welded to the neck part (16) by a weld seam (32) applied to the end face (22), in particular at the inner edge of the end face (22).

2. Door handle (10) according to claim 1, characterized by the fact that the overhanging section (30) is set off adjacent to the insertion section (28) and / or the overhanging section (30) is tapered conically towards the insertion section (28) at an end facing away from that end.

3. Door handle (10) according to claim 2, characterized by the fact that the protruding section (30) adjacent to or in the conically tapered area has a circumferential groove (35) for a shaft retaining ring (110).

4. Door handle (10) according to one of the preceding claims, characterized by the fact that the connecting piece (26) has a through or blind hole (36) extending along its central longitudinal axis (M) with a polygonal cross-section, in particular with a square cross-section.

5. Door handle (10) according to claim 4, characterized by the fact thata transverse bore (28) is provided which penetrates the neck part (16) and the insertion section (28) of the connecting part (26) and opens into the through or blind hole (36).

6. Door handle (10) according to any of the preceding claims, characterized by the fact that the connecting piece (26) has a projecting pin with a polygonal cross-section at its end facing away from the insertion section (28).

7. Door handle (10) according to any of the preceding claims, characterized by the fact that the neck part (16) of the handle body (12) is formed in one piece or has a turned part (40) welded to the neck part (16).

8. Door fitting (100), comprising a fitting body (102) for attachment to the door leaf (104) and a door handle (10) according to one of the preceding claims, wherein the door handle (10) is pivotably mounted on the fitting body (102) on the projection section (30) of the connecting piece (26) on a bearing element (106) about a pivot axis (107).

9. Lever handle kit comprising a door lever (10) according to one of claims 1 to 7 as well as a further handle body and a further connecting piece.

10. Door handle kit according to claim 9, characterized by the fact that the further handle body (12) has a neck part (16) with a further recess (20) open at the front, which is bounded to the outside by an end face (22), wherein the further recess (20) has a further inner contour (24) which corresponds to the inner contour (24) of the recess (20).

11. Door handle kit according to claim 9 or 10, characterized by the fact that the further connecting piece (26) in an insertion section (28) has a further outer contour (29) which corresponds to the outer contour (29) of the connecting piece (26).

12. Door handle kit according to one of claims 9 to 11, characterized by the fact that the handle body (12) and the further handle body (12) differ in their shape.

13. Door handle kit according to one of claims 9 to 12, characterized by the fact that the further connecting piece (26) has a passage or blind hole (36) extending along its central longitudinal axis (M) with a polygonal cross-section, in particular with a square cross-section, wherein the passage or blind hole (36) of the further connecting piece (26) differs in cross-section from the passage or blind hole (36) of the connecting piece (26).

14. Method for manufacturing a door handle (10), comprising the steps of: - providing a handle body (12) comprising a handle part (14) and a neck part (16) projecting from the handle part (14) with a recess (20) open at its end face, - providing a connecting piece (26) comprising an insertion section (28) and a projection section (30), - assembling the handle body (12) and the connecting piece (26) by inserting the insertion section (28) into the recess (20) on the neck part (16), and - welding the connecting piece (26) to the neck part (16) by applying a weld seam (32) to an end face (22) that defines the recess (20) on the outside.

15. Method according to claim 14, characterized by the fact that the handle body (12) is selected from several available handle bodies (12) before it is provided and / or the connector (26) is selected from several available connectors (26) before it is provided.

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