Hand-held tool

Abstract

Hand-held tool, preferably pliers (1), comprising: - two handle elements (2, 3), each formed in one piece with a jaw element (5, 6), and - a joint (7) which joint (7) connects the two handle elements (2, 3) pivotably relative to each other about an axis of rotation (4) of the joint (7), wherein a gap between the two jaw elements (5, 6) can be changed by pivoting the handle elements (2, 3) relative to each other or the jaw elements (5, 6) can be brought into contact with each other by pivoting, characterized in that the two handle elements (2, 3) each have an engagement element (8, 9) and a receiving geometry (10, 11), wherein each of the engagement elements (8, 9) of a handle element (2, 3) is arranged or can be arranged transversely to the axis of rotation (4) in the receiving geometry (11, 10) of the respective other handle element (3, 2).

Description

[0001] The present invention relates to a hand-held tool having the features of the preamble of claim 1.

[0002] Typical hand-held tools include: - two handle elements, each formed in one piece with a jaw element and - a joint which joint connects the two handle elements pivotably to each other about a rotation axis of the joint, wherein a gap between the two jaw elements can be changed by pivoting the handle elements or the jaw elements can be placed against each other by pivoting.

[0003] The following outlines the state of the art using a specific hand-held tool as an example. This applies generally to hand-held tools.

[0004] When working as a roofer and / or a plumber, a folding pliers is part of the basic equipment, which is always carried by the respective persons in their daily work and is used countless times during the workday.

[0005] It is already evident from this that a corresponding folding pliers is also subject to corresponding wear and tear.

[0006] Due to the high frequency of use and the high stresses to which the folding pliers are subjected when folding, bending, correcting or shaping metal sheets, the wear is so extreme that they can often only be used for a few days.

[0007] Such wear and tear is noticeable, among other things, at the joint between the two handle elements.

[0008] In the prior art, such a joint is usually formed by two bores in the jaw elements and a joint bolt guided through the bores.

[0009] However, due to increasing wear, this bolting loosens, creating a certain amount of play between the jaw elements and the joint bolt, whereby the jaw elements can tilt slightly towards each other.

[0010] Such a tilting is strongly noticeable in the gap between the two jaw elements, which no longer runs parallel and / or can no longer be completely closed, making the work of a roofer and / or plumber with the folding pliers difficult, limited or requiring a lot of effort.

[0011] As mentioned, this leads to a situation where a worn-out folding pliers are discarded and the roofer and / or plumber uses a new pair of folding pliers in order to continue to perform his job smoothly, accurately and quickly.

[0012] It is therefore evident that a corresponding folding pliers, when used as intended in the professional field of a roofer and / or plumber, has only a limited lifespan.

[0013] The object of the present invention is therefore to provide a hand-held tool which can at least partially improve the aforementioned disadvantages of the prior art and / or enable more precise or reliable operation - especially throughout the entire product life - and / or increase the durability of the hand-held tool.

[0014] This problem is solved according to the invention by a hand-held tool having the features of claim 1.

[0015] According to the present disclosure, a hand-held tool is intended to comprise the following: - two handle elements, each formed in one piece with a jaw element and - a joint which joint connects the two handle elements pivotably about an axis of rotation of the joint, wherein a gap between the two jaw elements can be changed by pivoting the handle elements relative to each other or the jaw elements can be brought together by pivoting, wherein the two handle elements each have an engagement element and a receiving geometry, wherein each of the engagement elements of a handle element is arranged or can be arranged transversely to the axis of rotation in the receiving geometry of the respective other handle element.

[0016] By arranging the engagement elements in the receiving geometries, guidance between the gripping elements is implemented via the engagement elements in the receiving geometries during a rotation around the axis of rotation, thus enabling precise positioning of the jaw elements relative to each other.

[0017] Even if the joint is subject to wear, guidance can still always be achieved via the engagement elements in the receiving geometries.

[0018] Thus, the service life of the hand-held tool can be increased, since, in contrast to known prior art designs, positional stability can be ensured even in the presence of wear during a pivoting movement around the axis of rotation of the jaw elements relative to each other.

[0019] Advantageous embodiments of the invention are defined in the dependent claims.

[0020] Preferably, the joint may have a joint bolt which connects the two handle elements to each other via corresponding openings in the handle elements.

[0021] It may be provided that the openings for receiving the joint bolts in the two handle elements penetrate the receiving geometry and / or the engagement element.

[0022] Embodiments in which the pivot bolt penetrates the receiving geometry and the engagement element in both handle elements may be preferred because this is expected to result in a maximum service life of the hand-held tool.

[0023] In particular, it may be provided that the openings for receiving the joint bolts in the handle elements are implemented by means of a machining process, preferably by means of a bore.

[0024] Preferably, the engagement elements of the two handle elements can each be designed as a bridge.

[0025] It can be provided that the engagement elements of the two handle elements have at least one guide surface, preferably which is oriented essentially orthogonally to the axis of rotation.

[0026] In particular, it may be provided that at least one guide surface is designed orthogonally to an opening of the receptacle for the pivot bolt in the handle element.

[0027] Preferably, the receiving geometry of the two handle elements can be designed as a groove, in particular having two groove flanks and a groove base.

[0028] It may be provided that the engagement elements along an axis transverse to the depth extension of the groove have a greater height than the gripping elements in the area of ​​the respective groove bottom of the grooves.

[0029] Preferably, the receiving geometry of the two handle elements may have at least one - in particular two - guide flank, which is particularly preferably at least one guide flank oriented orthogonally to the axis of rotation.

[0030] In particular, it may be provided that the guide flank is aligned orthogonally to the longitudinal extent of the opening for receiving the pivot bolt in the handle element.

[0031] It can be provided that at least one guide surface of the engagement element cooperates with at least one guide flank of the receiving geometry, preferably in contact with each other.

[0032] Preferably, the engagement elements can be provided to have the basic shape of a circular disk, with the circular path axis preferably coinciding with the axis of rotation of the joint.

[0033] It may be provided that the two handle elements are symmetrical and / or identical in their outer contour.

[0034] Because the handle elements are identical, the manufacturing effort can be significantly reduced, as it is no longer necessary to manufacture two different types of parts.

[0035] Preferably, the two handle elements are made of one of the following materials: - C45 (1.0503), - C50 (1.0540), - C55 (1.0535), - C60 (1.0601), - AlZnMgCul,5 (7075), - 50CrMo4, - 51CrMoV4, - 52CrMoV4, or - 25CrMo4.

[0036] It may be provided that the two handle elements are manufactured by a forging process, preferably a drop forging process.

[0037] Preferably, the hand-held tool is designed as flat-nose pliers, round-nose pliers, crimping pliers and / or folding pliers.

[0038] Further advantages and details of the invention will become apparent from the figures and the accompanying figure description. These show: Fig. 1a - 1e a first embodiment of a pair of pliers, Fig. 2a - 2e a second embodiment of pliers, Fig. 3a - 3e a third embodiment of pliers, Fig. 4a - 4f a fourth embodiment of pliers, Fig. 5a - 5f a fifth embodiment of pliers, Fig. 6a - 6f a sixth embodiment of pliers, Fig. 7a - 7f a seventh embodiment of pliers, Fig. 8a - 8e an eighth embodiment of pliers, Fig. 9a - 9f a ninth embodiment of a pair of pliers, Fig. 10a - 10e a tenth embodiment of pliers, Fig. 11a - 11f an eleventh embodiment of pliers, Fig. 12a - 12e a twelfth embodiment of pliers, and Fig. 13a - 13e a thirteenth embodiment of a pair of pliers.

[0039] The Fig. Figures 1a to 1e show a first embodiment of a pair of pliers 1, wherein these pliers 1 are designed in the form of flat pliers for a plumber.

[0040] This includes in the Fig. 1a and Fig. 1b shows two different views of the pliers 1 in a closed state. Fig. Figure 1e shows a detailed view of the jaw elements 5, 6 of the pliers 1 in an open state and the Fig. 1c and Fig. 1d a view of a handle element 2 of the pliers 1 in insulation.

[0041] The pliers 1 of this first embodiment of the Fig. 1a to 1e comprises two handle elements 2, 3, each of which is formed in one piece with a jaw element 5, 6.

[0042] More precisely, the first handle element 2 is implemented as a single piece with the first jaw element 5, and the second handle element 3 is implemented as a single piece with the second jaw element 6.

[0043] These two handle elements 2, 3 are pivotable relative to each other about a rotation axis 4 by means of the joint 7, whereby a gap between the two jaw elements 5, 6 can be changed by pivoting the handle elements 2, 3.

[0044] The joint 7 includes a joint bolt 12, which passes through the two handle elements 2, 3 via corresponding openings along the axis of rotation 4.

[0045] In this particular embodiment of the Fig. In 1a to 1e, the two handle elements 2, 3 are symmetrical or identical in their external geometry.

[0046] Each of the two grip elements 2, 3 includes at least one engagement element 8, 9, which is designed as a bridge.

[0047] These engagement elements 8, 9 are designed to be inserted into the receiving geometry 10, 11 of the respective other grip element 2, 3 and thus positioned.

[0048] The web-shaped engagement elements 8, 9 each comprise two guide surfaces 13, which are aligned orthogonally to the axis of rotation 4.

[0049] The receiving geometries 10, 11, on the other hand, are implemented as grooves 14, each of which has two guide flanks 15.

[0050] These guide flanks 15 are in turn implemented orthogonally to the axis of rotation 4.

[0051] When the two handle elements 2, 3 are positioned relative to each other, the engagement elements 8, 9 of the handle elements 2, 3 are inserted into the respective receiving geometry 10, 11 of the other handle element 3, 2, thereby axially positioning the handle elements 2, 3 along the axis of rotation 4.

[0052] After positioning the engagement elements 8, 9 in the receiving geometries 10, 11, the grip elements 2, 3 are connected or positioned relative to each other via the joint bolt 12.

[0053] In this assembled state of the pliers 1, the guide surfaces 13 of the engagement elements 8, 9 now lie orthogonally to the axis of rotation 4 against the guide flanks 15 of the receiving geometries 10, 11, thus ensuring guidance of the handle elements 2, 3 and therefore of the jaw elements 5, 6 to each other around the axis of rotation 4.

[0054] The Fig. Figures 2a to 2e show a second embodiment of a pair of pliers 1, which in this embodiment is the pair of pliers 1. Fig. 2a to 2e is implemented as a folding pliers for a tinsmith.

[0055] Again, the Fig. 2a and Fig. 2b a closed assembled state of the pliers 1, Fig. 2e a detailed view of the jaw elements 5, 6 in the open state of the pliers 1 and the Fig. 2c and Fig. 2d a handle element 2 of the pliers 1 in insulation.

[0056] In this embodiment of the Fig. 2a to 2e, in turn, have identical grip elements 2 and 3 with their external geometry.

[0057] The joint 7 of the pliers 1 is essentially the same as that of the first embodiment of the Fig. 1a to 1e implemented.

[0058] The Fig. Figures 3a to 3e show a third embodiment of pliers 1, wherein these pliers 1 are also implemented as folding pliers for a tinsmith, but in contrast to the embodiment of the Fig. 2a to 2e have flat jaw elements 5, 6 with a larger length extension parallel to the axis of rotation 4.

[0059] The Fig. 3a and Fig. Figure 3b again shows a closed, assembled state of the pliers 1. Fig. Figure 3e shows a detailed view of the pliers 1 in their assembled, open state. Fig. 3c and Fig. Figure 3d shows a handle element 2 of the third embodiment in isolation.

[0060] The handle elements 2, 3 of the third embodiment, which is in the Fig. Figures 3a to 3e are identical in their geometric design and are arranged symmetrically to each other in an assembled state of the pliers 1.

[0061] The joint 7 of the third embodiment of the Fig. 3a to 3e is essentially the same as that of the first embodiment of the Fig. 1a to 1e implemented.

[0062] The Fig. Figures 4a to 4f show a fourth embodiment of a pair of pliers 1. These pliers 1 are implemented as folding pliers for a tinsmith with a 45° bend in the jaw elements 5, 6.

[0063] The fourth embodiment of the pliers 1 is in a closed position by the Fig. 4a and Fig. 4b shown. Fig. Figure 4f shows a detailed view of the pliers 1 in the open state.

[0064] The Fig. 4c and Fig. Figure 4d shows a representation of the first grip element 2 in isolation and the Fig. 4e a representation of the second handle element 3 in isolation.

[0065] In contrast to the previous embodiments, the two handle elements 2, 3 are not identical, since the jaw elements 5, 6 differ in the front area of ​​the handle elements 2, 3 due to the bending.

[0066] The joint 7 of this fourth embodiment of the Fig. However, 4a to 4f is implemented in essentially the same way as in the preceding exemplary embodiments.

[0067] The Fig. Figures 5a to 5f show a further embodiment of a pair of pliers 1, which is implemented as a folding pliers for a tinsmith.

[0068] The fifth embodiment of the pliers 1 is held in a closed position by the Fig. 5a and Fig. 5b is shown. Fig. Figure 5f shows a detailed view of the pliers 1 in the open state.

[0069] The Fig. 5c and Fig. Figure 5d shows a representation of the first grip element 2 in isolation and the Fig. 5e a representation of the second handle element 3 in isolation.

[0070] In contrast to the fourth embodiment of the Fig. 4a to 4f shows the embodiment of the Fig. 5a to 5f wider jaw elements 5, 6, which have a greater extent parallel to the axis of rotation 4.

[0071] The remaining features of the fifth embodiment of the Fig. 5a to 5f are essentially the same as the fourth embodiment of the Fig. 4a to 4f.

[0072] The sixth embodiment of the Fig. Figures 6a to 6f show another embodiment of a folding pliers for a tinsmith, which is implemented with a 90° bend in the jaw elements 5, 6.

[0073] Apart from this bend, the sixth embodiment of the pliers 1 corresponds to the Fig. 6a to 6f essentially the embodiment of the Fig. 5a to 5f.

[0074] The sixth embodiment of the pliers 1 is held in a closed position by the Fig. 6a and Fig. 6b shown. Fig. Figure 6f shows a detailed view of the pliers 1 in the open state.

[0075] The Fig. 6c and Fig. Figure 6d shows a representation of the first grip element 2 in isolation and the Fig. 5e a representation of the second handle element 3 in isolation.

[0076] The exemplary embodiment of the Fig. Figures 7a to 7f show another embodiment of a pair of pliers 1, which are implemented as corner folding pliers for a tinsmith.

[0077] The joint 7 of the seventh embodiment of the Fig. However, 7a to 7f essentially correspond to the previous embodiments.

[0078] The seventh embodiment of the pliers 1 is held in a closed position by the Fig. 7a and Fig. 7b is shown. Fig. Figure 7f shows a detailed view of the pliers 1 in the open state.

[0079] The Fig. 7c and Fig. Figure 7d shows a representation of the first grip element 2 in isolation and the Fig. 7e a representation of the second handle element 3 in isolation.

[0080] The Fig. Figures 8a to 8e show a further embodiment with a substantially identical joint 7 of a pair of pliers 1, wherein these pliers 1 of the eighth embodiment are implemented as biting pliers.

[0081] The eighth embodiment of the pliers 1 is again in a closed position by the Fig. 8a and Fig. 8b shown. Fig. Figure 8e shows a detailed view of the pliers 1 in the open state.

[0082] The Fig. 8c and Fig. Figure 8d shows a representation of the handle element 2 in isolation.

[0083] The handle elements 2, 3 of this embodiment are again identical or symmetrically designed in an assembled state of the pliers 1.

[0084] A ninth embodiment of the pliers 1 is positioned in a closed position by the Fig. 9a and Fig. 9b is shown. Fig. Figure 9f shows a detailed view of the pliers 1 in the open state.

[0085] The Fig. 9d and Fig. Figure 9e shows a representation of the first grip element 2 in isolation and the Fig. 9c a representation of the second grip element 3 in isolation.

[0086] The ninth embodiment of a pair of pliers 1 of the Fig. 9a to 9f are essentially similar to the preceding embodiments with respect to the joint 7 and the handle elements 2, 3, whereas the ninth embodiment of the Fig. 9a to 9f is implemented as an asymmetrical biting pliers.

[0087] The tenth embodiment of a pair of pliers 1 is held in a closed position by the Fig. 10a and Fig. 10b shown. Fig. Figure 10e shows a detailed view of the pliers 1 in the open state.

[0088] The Fig. 10c and Fig. Figure 10d shows a representation of the first handle element 2 in isolation.

[0089] The tenth embodiment of the Fig. Figures 10a to 10e show an embodiment of pliers 1 as biting pliers, which also have two handle elements 2, 3 with a joint 7, which are implemented according to the preceding embodiments.

[0090] The handle elements 2, 3 of this embodiment are again identical or symmetrically designed in an assembled state of the pliers 1.

[0091] The exemplary embodiment of the Fig. Figures 11a to 11f show a pair of pliers 1, which is implemented as a folding and bending pliers.

[0092] The exemplary embodiment of Fig. 11a to 11f corresponds essentially to the previous embodiments with regard to its handle elements 2, 3 and the joint 7.

[0093] An eleventh embodiment of the pliers 1 is in a closed position by the Fig. 11a and Fig. 11b shown. Fig. Figure 11f shows a detailed view of the pliers 1 in the open state.

[0094] The Fig. 11d and Fig. Figure 11e shows a representation of the first grip element 2 in isolation and the Fig. 11c a representation of the second grip element 3 in isolation.

[0095] The examples of implementation of Fig. 12a to 12e and Fig. Figures 13a to 13e show a deck clamp for a tinsmith, the twelfth embodiment of which Fig. 12a to 12e has jaw elements 2, 3 bent at 45° and the embodiment of the Fig. 13a to 13e a straight version of the jaw elements 2, 3.

[0096] However, the twelfth and thirteenth embodiments are also essentially identical to the preceding embodiments with regard to the joint 7 with the engagement elements 8, 9 and the receiving geometries 10, 11.

[0097] The twelfth embodiment of the pliers 1 is in a closed position by the Fig. 12a and Fig. 12b shown. Fig. Figure 12e shows a detailed view of the pliers 1 in the open position. Fig. 12c and Fig. Figures 12d show a representation of the second handle element 3 in isolation.

[0098] The thirteenth embodiment of the pliers 1 is in a closed position by the Fig. 13a and Fig. 13b shown. Fig. Figure 13e shows a detailed view of the pliers 1 in the open position. Fig. 13c and Fig. Figure 13d shows a representation of the second handle element 3 in isolation.

[0099] The handle elements 2, 3 of the thirteenth embodiment are again identical or symmetrically designed in an assembled state of the pliers 1. Reference symbol list: 1 pair of pliers 2 First handle element 3 Second handle element 4 Rotation axis 5 First jaw element 6 Second jaw element 7 joint 8 First intervention element 9 Second intervention element 10 First recording geometry 11 Second recording geometry 12 hinge bolts 13 Guide surface 14 groove 15 Leading flank

Claims

[1] Hand-held tool, preferably pliers (1), comprising: - two handle elements (2, 3), each formed in one piece with a jaw element (5, 6), and - a joint (7) which joint (7) connects the two handle elements (2, 3) pivotably to each other about an axis of rotation (4) of the joint (7), wherein a gap between the two jaw elements (5, 6) can be changed by pivoting the handle elements (2, 3) to each other or the jaw elements (5, 6) can be placed against each other by pivoting, characterized by , that the two handle elements (2, 3) each have an engagement element (8, 9) and a receiving geometry (10, 11), wherein each of the engagement elements (8, 9) of a handle element (2, 3) is arranged or can be arranged transversely to the axis of rotation (4) in the receiving geometry (11, 10) of the respective other handle element (3, 2). [2] Tool according to claim 1, wherein the joint (7) has a joint bolt (12) which joint bolt (12) connects the two handle elements (2, 3) to each other via corresponding openings in the handle elements (2, 3). [3] Tool according to one of the preceding claims, wherein the engagement elements (8, 9) of the two handle elements (2, 3) are each designed as a bridge. [4] Tool according to at least one of the preceding claims, wherein the engagement elements (8, 9) of the two grip elements (2, 3) have at least one guide surface (13), preferably which at least one guide surface (13) is oriented substantially orthogonally to the axis of rotation (4). [5] Tool according to at least one of the preceding claims, wherein the receiving geometry (10, 11) of the two handle elements (2, 3) is designed as a groove (14), preferably having two groove flanks and a groove base. [6] Tool according to claim 5, wherein the gripping elements (8, 9) have a greater height along an axis transverse to the depth extension of the groove (14) than the gripping elements (2, 3) in the area of ​​the respective groove base of the grooves (14). [7] Tool according to at least one of the preceding claims, wherein the receiving geometry (10, 11) of the two handle elements (2, 3) has at least one - in particular two - guide flank (15), preferably which at least one guide flank (15) is oriented orthogonally to the axis of rotation (4). [8] Tool according to claims 4 and 7, wherein the at least one guide surface of the engagement element cooperates with the at least one guide flank of the receiving geometry, preferably abutting each other. [9] Tool according to at least one of the preceding claims, wherein the engagement elements have the basic shape of a circular disk, wherein a circular disk axis preferably coincides with the axis of rotation of the joint. [10] Tool according to at least one of the preceding claims, wherein the two handle elements (2, 3) are symmetrical and / or identical in their outer contour. [11] Tool according to at least one of the preceding claims, wherein the two handle elements (2, 3) are made of one of the following materials: - C45 (1.0503), - C50 (1.0540), - C55 (1.0535), - C60 (1.0601), - AlZnMgCu1.5 (7075), - 50CrMo4, - 51CrMoV4, - 52CrMoV4, or - 25CrMo4. [12] Tool according to at least one of the preceding claims, wherein the two handle elements (2, 3) are produced by a forging process, preferably a drop forging process. [13] Tool according to at least one of the preceding claims, wherein the hand-held tool is designed as flat-nose pliers, round-nose pliers, crimping pliers and / or folding pliers.

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