Integrated bending hinge device and lower vessel type balance

Abstract

The invention relates to a one-piece curved hinge (10) comprising a body (12) penetrated by two pairs of channels (24), a first pair of channels (24-1) and a second pair of channels (24-2), which extend in a radial plane oriented perpendicularly to one another and intersect one another at the center of the body (12) and intersect a central axis orthogonal to the radial plane, each channel pair (24) has two separate through-channels which are oriented parallel to one another and which are arranged closely adjacent to one another by means of convex curved channel wall sections which face one another, such that webs extending between the curved channel wall sections together form a curved joint (22), the central part (16) of the main body (12) can be pivotally hinged to an input part (18), which is otherwise not connected thereto, by means of a first curved hinge (22-1) formed between the through-channels of the first channel pair (24-1), the second channel pair (24-2) is pivotably articulated to the output part (20), which is otherwise not connected thereto, by means of a second curved hinge (22-2) formed between the through-channels of the second channel pair (24-2). The invention is characterized in that the input part (18) and / or the output part (20) is designed as a beam which radially passes through the center part (16). The invention also relates to a lower vessel type balance, the load holder and the weight carrier of which are coupled to each other by means of a bending hinge device (10) according to the invention.

Description

Technical Field

[0001] The present invention relates to an integral bending hinge device, which includes a main body, which is penetrated by two channel pairs, namely a first channel pair and a second channel pair, which extend in a radial plane at right angles to each other and intersect each other at the center of the main body and intersect a central axis orthogonal to the radial plane, wherein each channel pair has two separate through-channels oriented parallel to each other, and the through-channels are arranged closely adjacent to each other using convexly arched channel wall sections facing each other, so that the webs extending between the mentioned arched channel wall sections jointly form a bending hinge portion, wherein the center piece of the main body can be pivotally hinged to an input piece that is not connected to it in other respects by means of a first bending hinge portion formed between the through-channels of the first channel pair, and can be pivotally hinged to an output piece that is not connected to it in other respects by means of a second bending hinge portion formed between the through-channels of the second channel pair.

[0002] The invention also relates to a bottom-pan balance, the weighing material carrier of which is coupled to the load receiving part of its weighing system via such a bending joint. Background Art

[0003] A generic bending joint is known from DE 21 14 802 A.

[0004] In particular, precision balances used as so-called comparators (which are used to calibrate or correct test weights relative to test weights) are mostly constructed as bottom-pan type balances. In bottom-pan type balances, the weight carrier that is determined to accommodate the weighing object is arranged below the so-called load carrier and is coupled to it by a coupling joint. The load carrier itself is a component of a so-called weighing system, i.e., a more or less complex structure composed of levers and guides, which transmits the weight acting on the load carrier to the actual sensor using a suitable weighing transmission or force transmission. The sensor can be constructed as a plunger coil assembly in a balance (EMK balance) that works according to the electromagnetic compensation principle, wherein the coil current required to maintain a balanced state is used as a measured variable representing the weight acting on the load carrier. However, the special function of the sensor does not play a role in this invention. However, it is desired in any case that the weight applied to the weighing object carrier by the mass to be weighed is accurately vertically introduced into the load carrier of the weighing system. For this purpose, an articulated coupling between the load carrier and the weighing object carrier is required, which allows a pivoting movement about two mutually perpendicular horizontally extending pivot axes, wherein the aforementioned pivot axes should preferably extend in the same horizontal plane.

[0005] From the above-mentioned documents of this type, a kind of integral bending hinge device suitable in principle for this purpose is known, wherein the preferred application mentioned in the document is the coupling of a drive shaft with a flywheel. The main body of the known bending hinge device has the basic shape of a hollow cylinder of a tube section. It is divided into three axial sections, the middle section of which can be called the center piece, and the axial outer section of which can be called the input or output piece, wherein the name is only used for the structural distinction of the elements without functional influence. The input piece and the output piece can be pivotally hinged to the center piece through a bending hinge, wherein the two pivot axes are located in the same radial plane of the main body, that is, in particular in its middle plane, and extend perpendicularly to each other. Each bending hinge of the two bending hinges is composed of two thin material parts, which are radially opposite to each other in pairs in the tube wall of the hollow cylindrical main body. Each thin material part is formed by a tab between two holes closely adjacent to each other passing through the tube wall. The two single holes, each located on a radially parallel line, can be considered together as a through-channel through the hollow cylindrical body, which is interrupted by the inner cavity of the tube section. Each curved joint is therefore formed by a channel pair of two closely adjacent through-channels through the body. Each through-hole is connected to its counterpart located on the same radially parallel line via a through-slit that surrounds half of the body, thereby achieving a complete separation of the central part on the one hand and the input and output parts on the other hand (except for the curved joint connection).

[0006] In two aspects, the known bending hinge device is disadvantageous in the articulated coupling between the weighing object carrier and the load holding part of the balance used as a lower dish. On the one hand, it is difficult to directly fix the basically annular input and output parts on the load holding part or the weighing object carrier. This is especially considering the situation that the adjustability of the coupling should be provided in the vertical direction and the azimuth direction in the precision instrument. On the other hand, it must be regarded as disadvantageous that each of the two bending hinges consists only of two approximately point-shaped thin material parts. This hinge is not completely rigid with respect to the parasitic moving parts and is particularly susceptible to torsional movements. Accordingly, the above-mentioned document also provides that the bending hinge device described is not used alone, but only used in combination with a bending hinge device of similar design, wherein the two arrangements are concentrically inserted into each other. This means additional installation costs and precision losses, which may still be reasonable in the case of a drive shaft, but are unacceptable in the articulation of the weighing object carrier and the load holding part of a precision balance that is concerned here. Summary of the invention

[0007] The object of the present invention is to improve a generic bending joint arrangement in such a way that it is better suited for coupling a weighing object carrier to a load receiving part of a bottom-pan precision balance.

[0008] This object is achieved in conjunction with the features of the preamble of claim 1 in that the input element and / or the output element is designed as a beam which passes radially through the central element.

[0009] A bottom-pan balance whose weighing object carrier is coupled accordingly to its load receiving part is the subject of claim 8 .

[0010] Preferred embodiments of the invention are the subject matter of the dependent claims.

[0011] The present invention is different from the basic shape of the main body of the bending hinge device known from the prior art, which is basically a hollow cylinder, and provides a basic shape of the main body that is basically a solid cylinder. The channel pairs that form the respective bending hinges are no longer limited to corresponding gaps that pass through the thin tube wall, but are composed of real channels, which are surrounded by the channel wall over their entire length or at least most of their length. As a result, the webs that exist between the single channels of the channel pairs and define the pivot axis of the respective bending hinges are extended and extend through the entire body in a radial manner. Only in the central area, that is, in the intersection area of ​​the two channel pairs, a relatively small hollow space that interrupts the channel is automatically generated by the intersection of the channel inner cavity. Therefore, in the preferred embodiment in which the input element and the output element are constructed as radial beams, each bending hinge consists of two webs that extend almost half of the diameter of the main body, which leads to a significantly more accurate definition of the pivot axis compared to the situation in the prior art when it is defined by only two approximately point-shaped thin material parts.

[0012] A further advantage of the design according to the invention is that the center point of the end face of the input or output part is not located in the hollow interior of the tubular body, but in the material of the input or output part. This allows the coupling element for the load receiving part or the weighing object carrier to be directly attached to the input or output part in the center. Preferred embodiments of such a coupling element will also be described in detail below.

[0013] Finally, a third advantage of the design according to the invention is that the input or output part can be designed in connection with the center part. If the input and / or output part is designed as a beam that passes radially through the center part, the center part itself can fill the remaining space laterally to the beam at the same axial height. This is not the case in the prior art; here, the input or output part on the one hand and the intermediate part on the other hand must be arranged adjacent to each other purely axially. The design according to the invention therefore allows a significant saving of structural space in the axial direction.

[0014] In a preferred embodiment, as mentioned, not only the input part or the output part, but the input part and the output part are each designed as a beam passing radially through the central part, wherein the beams are oriented eccentrically and perpendicularly to each other and perpendicularly to the central axis. As a result, the input part and the output part are held in different axial sections of the body; however, their associated pivot axes can lie in the same radial plane. As explained at the beginning, this is advantageous for use in precision weighing technology.

[0015] Preferably, the input part has a fastening opening coaxial to the central axis on its side facing away from the associated bending joint for receiving a coupling pin. As explained above, the "body" of the input part is located in the central region of the bending joint. An opening serving as an interface for a coupling pin can be introduced here, with which the input part can be fastened to a load receiving part (preferably) of a bottom plate balance or to a weighing object carrier.

[0016] The fixing opening can be provided with an internal thread, into which the corresponding external thread of the coupling pin can be screwed. However, it is considered more advantageous that the input part has a threaded channel extending transversely to the fixing opening for accommodating a screw that clamps the coupling pin in the fixing opening. That is to say, axial or height adjustment can be achieved in this way. Here, the coupling pin should be inserted into the fixing opening as form-locked as possible and axially movable, for example a cylindrical coupling pin is inserted into a circular fixing hole. The desired relative positioning of the coupling pin and the input part in the axial direction and in the azimuthal direction can be stabilized by a clamping screw in a threaded channel extending transversely to the fixing opening. Preferably, the threaded channel extends parallel to the longitudinal extension of the beam of the input part. Particularly preferably, the threaded channel extends over the entire length of the beam of the input part, so that the coupling pin inserted into the fixing opening can be fixed from both sides by means of clamping screws.

[0017] It is preferably provided for the output member that the output member has a coupling bolt extending longitudinally coaxially with the central axis on its side facing away from the associated bending joint. For example, the coupling bolt can be raised from the end side of the output member in a single piece with uniform material. The coupling bolt can be used as an interface for coupling the output member to a load receiving part or (preferably) a weighing object carrier of a bottom plate type precision balance. Preferably, the coupling bolt has a cylindrical basic shape with a lateral clamping flattened portion. If the corresponding interface of the load receiving part or the weighing object carrier is a sleeve with a lateral threaded channel, the clamping flattened portion of the coupling bolt can be used as a support for a clamping screw guided in the threaded channel.

[0018] In a preferred embodiment of the present invention, it is provided that, in order to construct a common fixing passage, the fixing opening of the input part transitions into the fixing opening of the output part that completely passes through the output part and preferably also passes through the coupling bolt on the length of at least a partial area. In other words, in a preferred embodiment, a passage that passes through the entire bending hinge device as much as possible coaxially is provided. In this design, only the tip of the coupling bolt is closed. It is understood by those skilled in the art that the fixing pin (which is moved into the bending hinge device according to the present invention along the length of this common fixing passage in a form-locking manner) blocks two bending hinges at the same time. In this way, any relative deflection of the input part and the output part relative to the center part is prohibited. When there is a risk that the excessive deflection movement generated by external forces may be applied to the slender bending hinge, this hinge blocking mechanism can be meaningful in particular under transportation conditions. In the conventional operation of the bending hinge device according to the present invention, this fixing pin must of course be at least moved away to make it no longer intersect with the radial planes of the two bending hinges. Subsequently, the bending hinge device according to the present invention can perform two conventional pivoting movements. In a preferred embodiment, as explained below, the coupling pin can fulfill the additional function of a temporary fixing pin.

[0019] The balance according to the invention can be constructed using the bending joint device according to the invention with a common fixing channel. This is in particular a bottom-dish balance, which comprises:

[0020] - a load holder coupled to the load cell via a weighing system,

[0021] - a weighing object carrier arranged below the load receiving element, and

[0022] - a one-piece flexure joint of the type mentioned above, by means of which the load carrier is articulated to the load receiving part,

[0023] in,

[0024] - either the load carrier has a coupling pin which can be fixed in a fixing opening of the input part of the integral bending joint, and the load carrier has a fixing sleeve in which the coupling pin of the output part of the integral bending joint can be fixed,

[0025] - either the load carrier has a coupling pin which can be fixed in a fixing opening of the input part of the integral bending joint, and the load receiving part has a fixing sleeve in which the coupling pin of the output part of the integral bending joint can be fixed,

[0026] And in this case, the coupling pin is supported in a form-fitting manner so that it can be axially displaced in a common fastening channel.

[0027] That is, in such a balance, it is possible that the coupling pin in the operating state is only moved so far into the common fixing channel that it does not intersect the radial plane of the bending joint and therefore serves only as a coupling element to the load holder or the weighing object carrier. This functional position is to be referred to as the operating position. In the other functional position, which is referred to as the transport position, the coupling pin is moved further into the common fixing channel so that it intersects the aforementioned radial plane and serves as a fixing pin and blocks the bending joint as described above.

[0028] In order to precisely define the two functional positions of the coupling pin, it is preferably provided that the coupling pin has two annular grooves spaced apart from each other in the axial direction. These annular grooves can be used as the action surface for the clamping screw in the threaded channel oriented transversely to the fixed opening or the common fixed channel. In this way, the precise operating position and the equally precise transport position of the coupling pin are defined. Although the above-mentioned axial adjustability is lost here. However, the azimuth adjustability mentioned above is also maintained. However, when the coupling bolt on the other side of the bending hinge device is provided with a lateral clamping flattened portion extending over most of its length as provided in the preferred embodiment, the loss of axial adjustability can be particularly acceptable in this case. That is to say, at the clamping flattened portion, the fixing sleeve of the weighing object carrier or the load holding member can be fixed in different axial positionings by means of a clamping screw (while maintaining its azimuth orientation). Therefore, in general, the axial adjustability and azimuth orientability of the weighing object carrier relative to the load holding member are provided in this embodiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Further details and advantages of the present invention are obtained from the following detailed description and the accompanying drawings, in which:

[0030] Figure 1 A perspective view showing a preferred embodiment of a bending hinge device according to the present invention,

[0031] Figure 2 Shows Figure 1 A first side view of a bending hinge device,

[0032] Figure 3 Shows Figure 1 Second side view of the bending hinge device rotated 90º,

[0033] Figure 4 The side view and the cross-sectional view show Figure 1 A bending joint having an inserted coupling pin in an operating position, and

[0034] Figure 5 Shown in side and cross-sectional views Figure 1A bending joint arrangement with an inserted coupling pin in the transport position. DETAILED DESCRIPTION

[0035] Figures 1 to 5 A particularly preferred embodiment of a bending joint 10 according to the invention is shown. The bending joint has a body 12 of substantially cylindrical basic shape. In the figures, the body 12 is coupled to a coupling pin 14, which will be discussed further below. However, the main features of the invention are realized in the body 12, which should therefore first be described separately.

[0036] The body 12 of the bending joint 10 according to the invention comprises a central piece 16. The basic shape of the central piece 16 can be described as cylindrical, in whose two end sides a groove is cut radially through the central piece 16, wherein the two grooves extend perpendicularly to each other. The depth of the grooves is selected so that they penetrate each other in the intersection area.

[0037] A beam-shaped input member 18 is arranged in the groove shown at the top in the drawing of the center piece 16. An output member 20, which is also beam-shaped, is arranged in the groove shown at the bottom in the drawing of the center piece 16. The input member 18 and the output member 20 are each hinged to the center piece 16 via a curved hinge 22 which is constructed as a longitudinally extending thin material portion 22. For the sake of distinction, the curved hinge 22 which hinges the input member 18 to the center piece 16 is referred to herein as a first curved hinge 22-1, and the curved hinge 22 which hinges the output member 20 to the center piece 16 is referred to as a second curved hinge 22-2.

[0038] In order to construct the mentioned bending hinge 22, the main body 12 is provided with two perpendicularly intersecting channel pairs 24, each of which consists of two separate through-channels with a D-shaped profile. The curved side walls of the individual through-channels of each channel pair 24 face each other, and a web forming the bending hinge 22 is constructed between their vertices. For easier assignment, the channel pair assigned to the first bending hinge 22-1 is referred to as the first channel pair 24-1, and the channel pair assigned to the second bending hinge 22-2 is referred to as the second channel pair 24-2.

[0039] A person skilled in the art will appreciate that the above description of "cutting" a slot in a body and "arranging" the input and output elements therein is merely illustrative and does not represent a description of an actual manufacturing method. In practice, the bending hinge device according to the invention is preferably machined from a block of material, preferably metal, particularly preferably aluminum, for example by milling, drilling and / or electro-erosion.

[0040] Through especially from Figures 1 to 3The described structure, which can be seen in the overview of FIG. 1 , realizes the basic function of the bending joint device 10 according to the invention. The input member 18 and the output member 20 can be pivoted relative to the central member 16, wherein the precisely defined pivot axes are perpendicular to each other and lie in the same radial plane relative to the cylindrical basic shape of the body 12.

[0041] The bending joint device 10 according to the invention is particularly suitable for coupling a weighing object carrier (not shown in the drawings) of a bottom-pan precision balance to a load receiving part (also not shown). To facilitate the coupling, the embodiment shown provides that the beam of the input part 18 is provided with a fixing opening 26 in the central area, which extends coaxially with the central axis of the body 12. Figure 4 and Figure 5 As shown, a coupling pin 28 connected or connectable to a load carrier of a balance can be inserted into the aforementioned fastening opening 26 in a form-fitting manner and fixed in a clamping manner by means of a clamping screw 30 which is arranged in a lateral threaded channel 32 of the input part 18 .

[0042] In the embodiment shown, a coupling pin 14 is used for coupling the load carrier, which coupling pin is preferably connected to the output element 20 in a uniform, one-piece manner and also extends coaxially with the central axis of the body. In this embodiment, for coupling, a coupling sleeve (not shown) of the load carrier can be pushed onto the coupling pin 14 in a form-fitting manner and fixed to the coupling pin 14 by means of a clamping screw guided in a lateral threaded channel of the clamping sleeve.

[0043] Figure 4 and Figure 5 A particularly preferred embodiment of the bending joint device 10 according to the invention in combination with a special design of the coupling pin 28 is shown. Figure 4 As can be seen in the sectional views of Figures 5a / d and 5a / d, not only is the input part 18 provided with a guide opening 26 which passes completely through it, but rather the output part 20 and the coupling pin 14 also have a fixing opening 34 which, in the embodiment shown, passes completely through the output part 20 and only partially through the coupling pin 14. In each case, a common fixing channel 36 is produced, into which the coupling pin 28 can be inserted in a form-fitting manner so as to be axially displaceable.

[0044] In the illustrated embodiment, the coupling pin 28 is provided with a first annular groove 38-1 arranged near its free end and a second annular groove 38-2 spaced further away from the free end. Figure 4In the illustrated first functional position, referred to as the operating position, the first annular groove 38-1 is used so that the coupling pin 28 is sunk only to such a depth into the common fixing channel 36 that the clamping screw 30 in the lateral threaded channel 32 of the input part 18 engages in the first annular groove 38-1 and can thus fix the coupling pin (only) to the input part 18. In this operating position, the two bending joints 22 are movable, i.e. the input part 18 can be pivoted relative to the central part 16 about a first pivot axis via the first bending joint 22-1 and the output part 20 can be pivoted relative to the central part 18 about a second pivot axis perpendicular thereto via the second bending joint 22-2. The coupling of the input part 18 to a load carrier (not shown) of a bottom plate precision balance can be realized via the coupling pin 28.

[0045] Here, due to the radial symmetry of the first annular groove 38-1, an azimuth adjustment of the bending joint 10 relative to the coupling pin 28 and thus relative to the load holder can be achieved without changing the height setting. In the embodiment shown, height adjustment is also entirely possible. As explained above, the weighing object carrier of the bottom plate type precision balance is preferably coupled by means of a fixing sleeve that surrounds the coupling bolt 14 in a form-locking manner. However, in the embodiment shown, the coupling bolt 14 has a lateral clamping flattened portion 40. It extends over a considerable length range of the coupling bolt 14. The fixing sleeve of the cylindrical basic shape of the weighing object carrier that surrounds the coupling bolt 14 in a form-locking manner can be moved relative to the coupling bolt 14 in its height position and fixed to the coupling bolt 14 at the desired height by means of a clamping screw that passes through it laterally. Here, the lateral clamping flattened portion 40 serves as a support for the clamping screw and at the same time ensures the relative orientability of the fixing sleeve relative to the coupling bolt 14 in a reproducible azimuth angle.

[0046] exist Figure 5 In the second functional position shown, which is referred to as the transport position, the coupling pin 28 is moved further into the common fixing channel 36, i.e. in particular so that its second annular groove 38-2 is located at the height of the lateral threaded channel 32 of the input part 18 and its free end projects at least into the fixing opening 34 of the output part 20, preferably into the coupling bolt 14 as shown. In this position, the coupling bolt can be fixed by means of the clamping screw 30 and acts as a fixing pin, i.e. the coupling bolt blocks the two bending joints 22 by its positive locking engagement in all sections of the common fixing channel 36. Thus, the input part 18 and the output part 20 are fixed relative to the central part 16 in this transport position. Therefore, even the action of considerable forces does not lead to an overloading of the bending joint 22 and a possible damaging deflection.

[0047] Of course, the embodiments discussed in the specific description and shown in the drawings represent only illustrative embodiments of the invention. Based on the present disclosure, a person skilled in the art is given a wide range of variation possibilities. In its preferred embodiment, the entire bending hinge device 10 made of a unified metal block is milled, drilled and / or electro-eroded. However, alternative manufacturing methods, such as those achieved by additive manufacturing techniques (such as 3D printing), are also conceivable.

[0048] Reference numerals list

[0049] 10 Bending hinge device

[0050] 12 Main Body

[0051] 14 coupling bolts

[0052] 16 center pieces

[0053] 18 Input parts

[0054] 20 output pieces

[0055] 22-1 First bending hinge

[0056] 22-2 Second curved hinge

[0057] 24-1 First channel pair

[0058] 24-2 Second channel pair

[0059] 26 fixed openings in 18

[0060] 28 coupling pins

[0061] 30 Clamping screw

[0062] 32 thread channels

[0063] 34 Coupling bolt / fixed opening in output element

[0064] 36 common fixed channels

[0065] 38-1 First annular groove

[0066] 38-2 Second annular groove

[0067] 40 lateral clamping truncated portion on 14

Claims

1. An integral bending hinge device (10), comprising a main body (12), the main body being penetrated by two channel pairs (24), namely a first channel pair (24-1) and a second channel pair (24-2), the channel pairs extending in a radial plane oriented perpendicularly to each other and intersecting each other at the center of the main body (12) and intersecting a central axis orthogonal to the radial plane, wherein: Each channel pair (24) has two separate through-channels oriented parallel to each other, which are arranged closely adjacent to each other with mutually facing, convexly arched channel wall sections, so that the webs extending between the mentioned arched channel wall sections jointly form a curved hinge (22), wherein the center piece (16) of the main body (12) is pivotally hinged to an input piece (18) that is not connected thereto in other respects by means of a first curved hinge (22-1) formed between the through-channels of the first channel pair (24-1), and is pivotally hinged to an output piece (20) that is not connected thereto in other respects by means of a second curved hinge (22-2) formed between the through-channels of the second channel pair (24-2), characterized in that the input piece (18) and / or the output piece (20) are constructed as beams that radially pass through the center piece (16).

2. The integrated bending hinge device (10) according to claim 1, characterized in that: The input element (18) and the output element (20) are each designed as a beam that passes radially through the central element (16), wherein the beams are oriented eccentrically and perpendicularly to one another and perpendicularly to the central axis.

3. The one-piece bending joint device (10) according to any one of the preceding claims, characterized in that The input element (18) has, on its side facing away from the associated first bending joint (22-1), a fastening opening (26) coaxial with the central axis for accommodating a coupling pin (28).

4. The integrated bending hinge device (10) according to claim 3, characterized in that: The input element (18) has a threaded channel (32) extending transversely to the fixing opening (26) for accommodating a fastening screw (30) for clamping the coupling pin (28) in the fixing opening (26).

5. The one-piece bending joint device (10) according to any one of the preceding claims, characterized in that The output element (20) has, on its side facing away from the associated second bending joint (22-2), a coupling pin (14) extending longitudinally coaxially with the central axis.

6. The integrated bending hinge device (10) according to claim 5, characterized in that: The coupling pin (14) has a cylindrical basic shape with lateral clamping flattened portions (40).

7. The integrated bending hinge device (10) according to any one of claims 3 to 4 and any one of claims 5 to 6, characterized in that: To form a common fastening channel (36), a fastening opening (26) of the input part (18) transitions into a fastening opening (34) of the output part (20) which passes completely through the output part (20) and at least over a partial length region through the coupling bolt (14).

8. A lower dish type balance, the lower dish type balance comprising: - a load holder coupled to the load cell via a weighing system, - a weighing object carrier arranged below the load receiving member, and - an integral flexure joint (10) according to claim 7, by means of which the load carrier is articulated to the load receiving part, in, - either the load carrier has a coupling pin (28) which can be fixed in a fixing opening (26) of an input part (18) of the integral bending joint (10), and the load carrier has a fixing sleeve in which a coupling bolt (14) of an output part (20) of the integral bending joint (10) can be fixed, - either the load carrier has a coupling pin (28) which can be fixed in a fixing opening (26) of an input part (18) of the integral bending joint (10), and the load carrier has a fixing sleeve in which a coupling bolt (14) of an output part (20) of the integral bending joint (10) can be fixed, And wherein the coupling pin (28) is supported in a form-fitting manner so that it can be axially displaced in a common fastening channel (36).

9. The balance according to claim 8, characterized in that The coupling pin (28) has two annular grooves (38-1, 38-2) which are spaced apart from each other in the axial direction.

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