Grinder and coffee machine

Abstract

Grinder (1), designed for installation in a coffee machine (2), with a grinder housing (3) and a drive device (4), wherein a force-locking and / or form-locking element (5) is provided for fixing the drive device (4) relative to the grinder housing (3) and a tolerance compensation means (6) is provided between the grinder housing (3), the drive device (4) and / or the force-locking and / or form-locking element (5).

Description

[0001] The present invention relates to a grinder, designed for installation in a coffee machine, with a grinder housing and a drive device - and to a coffee machine with a corresponding grinder.

[0002] It is known that grinders designed for installation in coffee machines comprise a grinder housing and a drive unit. The drive unit is usually a drive motor mounted on the grinder housing. This can be achieved, for example, by screwing or snapping the drive motor onto / into the grinder housing.

[0003] The disadvantages of screw mounting are the comparatively high assembly effort, and the potentially high forces acting on the snap-on mechanism with snap-on mounting. A secure hold of the drive motor on the grinder housing over its service life, despite possible manufacturing tolerances, is therefore often ensured by a very robust snap-on mechanism, which in turn complicates assembly.

[0004] The object of the present invention is therefore to improve the disadvantages mentioned, in particular to provide an advantageous embodiment and, most particularly, to enable a simple yet robust assembly of the drive device on the grinder housing despite the manufacturing tolerances that occur.

[0005] This object is achieved by the subject matter of claim 1 as well as by the subject matter of claim 10. Advantageous developments of the invention are the subject matter of the dependent claims.

[0006] A grinder according to the invention is designed for installation in a coffee machine and comprises a grinder housing and a drive device, wherein a force-locking and / or form-locking element is provided for fixing the drive device relative to the grinder housing and a tolerance compensation means is provided between the grinder housing, the drive device and / or the force-locking and / or form-locking element. In this way, the disadvantages of the known solutions can be improved or overcome, in particular an advantageous embodiment can thus be specified. In particular, a simple yet robust installation of the drive device on the grinder housing is now possible despite occurring manufacturing tolerances. The tolerance compensation means not only reduces the high assembly effort of a screw assembly and the high forces acting on the snap-in device.This is because the tolerance compensation device can ensure that the snap-in mechanism exerts the required holding force over its entire service life, even when lower forces are applied to the snap-in mechanism, without the snap-in mechanism itself having to be designed to be extremely robust, which in turn complicates assembly. Furthermore, the tolerance compensation device, when arranged according to the invention, ensures that even an unfavorable interaction of various manufacturing tolerances does not negatively affect the noise emissions of the grinder, or even increases them. Thus, a secure and even noise-optimized fixation of the drive mechanism relative to the grinder housing can be achieved with very little assembly effort.

[0007] In an advantageous development of the solution according to the invention, the force-locking and / or form-locking element at least partially encompasses a surface of the drive device facing away from the grinder housing in a bow-shaped manner. This allows for a particularly simple and easily manufactured arrangement of the tolerance compensation means between the grinder housing, the drive device, and / or the force-locking and / or form-locking element.

[0008] In a further advantageous development of the solution according to the invention, the form-locking element comprises a locking device. This allows for particularly easy assembly of the form-locking element together with the tolerance compensation means.

[0009] In a further advantageous development of the solution according to the invention, the tolerance compensation means is provided on the force-locking and / or form-locking element. This enables particularly simple installation of the tolerance compensation means relative to the grinder housing together with the form-locking element.

[0010] In a further advantageous development of the solution according to the invention, the tolerance compensation means is attached to a bracket-shaped section that encompasses the surface of the drive device. This enables particularly effective tolerance compensation.

[0011] In a further advantageous development of the solution according to the invention, the tolerance compensation means is manufactured in one piece with the force-locking and / or form-locking element. This not only saves component costs but also ensures that the tolerance compensation means is provided in a captive manner.

[0012] In a further advantageous development of the solution according to the invention, the tolerance compensation means is made of a soft component, in particular silicone, rubber, NBR, or EPDM. This allows this solution to be provided with particularly low cost, tensile strength, lubricant resistance, and climate resistance.

[0013] In a further advantageous development of the solution according to the invention, it is provided that the tolerance compensation means 6 has a hardness of 30 to 90 Shore A, in particular 45 to 70 Shore A. In addition to the tolerance compensation properties advantageous in the range of 30 to 90 Shore A for various force and / or form-fitting connections, 45 to 70 Shore A enable a surprisingly positive influence on the noise emission of the grinding mechanism.

[0014] In a further advantageous development of the inventive solution, the tolerance compensation means comprises a spherical, annular, mushroom-shaped, cylindrical, conical, pyramidal, tetrahedral, and / or cuboid-shaped section. This enables particularly advantageous tolerance compensation properties for a wide variety of arrangement situations.

[0015] The aforementioned problem is also solved by a coffee machine with a grinder according to the above description. This allows the aforementioned advantages to be realized to a particularly significant degree.

[0016] Further advantages and advantageous configurations result from the following in connection with the single Fig. 1 described embodiment. It shows: Fig. 1 a grinder with a grinder housing and a drive device, designed for installation in a coffee machine, and Fig. 2 a coffee machine with such a grinder.

[0017] In Fig. 1 shows a grinder 1 with a grinder housing 3 and a drive device 4, which is designed for installation in a coffee machine 2, wherein the coffee machine 2 is Fig. 2 is shown.

[0018] The grinder 1, which is designed for installation in the coffee machine 2, comprises a grinder housing 3 and a drive device 4. A force-locking and form-locking element 5 is provided to fix the drive device 4 relative to the grinder housing 3. A tolerance compensation means 6 is provided between the drive device 4 and the force-locking and form-locking element 5. The force-locking and form-locking element 5 encompasses, in a bow-shaped manner, a surface of the drive device 4 facing away from the grinder housing 3. The form-locking element 5 comprises a locking device which is engaged with a counter-locking device on the grinder housing 3. Fig. 1 shows a specific embodiment of the tolerance compensation means 6 in detail, whereas in Fig. 2 is only shown schematically.

[0019] The tolerance compensation means 6 is provided on the force and form-locking element 5 and is fastened to a section that encompasses the surface of the drive device 4 in a bow-shaped manner. In the present example, the tolerance compensation means 6 is not manufactured in one piece with the force and / or form-locking element 5, but rather separately from a soft component, in this case EPDM. It has a hardness of 55 Shore A and two conical and one cylindrical sections. It can be inserted into a cylindrical hole in the force and form-locking element 5 by guiding a smaller of the two conical sections through the hole and then seating the cylindrical section in the cylindrical hole and being held there by the smaller conical section. The larger conical section, designed as a truncated cone, rests against the surface of the drive device 4 and effects tolerance compensation.On both sides of the cylindrical section, the tolerance compensation means 6 is accordingly designed as a truncated cone.

[0020] This allows the aforementioned disadvantages to be improved. In particular, an advantageous embodiment is provided that allows for simple yet robust mounting of the drive device 4 to the grinder housing 3 despite the manufacturing tolerances that may occur. Furthermore, a secure and even noise-optimized fixation of the drive device 4 to the grinder housing 3 can be achieved with very little assembly effort.

[0021] The components shown in the exemplary embodiment, such as the grinder housing 3 and the drive device 4, as well as their relative sizes, are generally not to be considered to scale. Rather, individual elements, such as the tolerance compensation means 6, may be shown to be exaggeratedly thick or large for clarity and / or clarity. The explanation of the grinder 1 according to the invention and the tolerance compensation means 6 with reference to the described exemplary embodiments is not to be considered as a limitation of the invention to these. Rather, the invention encompasses any new feature and any combination of features, even if this feature or combination itself is not explicitly stated in the patent claims or the exemplary embodiments. LIST OF REFERENCE SYMBOLS 1 grinder 2 coffee machines 3 grinder housing 4 Drive device 5 Force and / or form-locking element 6 Tolerance compensation agents

Claims

[1] Grinder (1), designed for installation in a coffee machine (2), with a grinder housing (3) and a drive device (4), wherein a force-locking and / or form-locking element (5) is provided for fixing the drive device (4) relative to the grinder housing (3) and a tolerance compensation means (6) is provided between the grinder housing (3), the drive device (4) and / or the force-locking and / or form-locking element (5). [2] Grinder (1) according to claim 1, characterized by that the force and / or form-locking element (5) at least partially encompasses a surface of the drive device (4) facing away from the grinder housing (3) in a bow-shaped manner. [3] Grinder (1) according to claim 1 or 2, characterized by that the form-locking element (5) comprises a locking device. [4] Grinder (1) according to one of claims 1 to 3, characterized by that the tolerance compensation means (6) is provided on the force and / or form-locking element (5). [5] Grinder (1) according to one of claims 2 to 4, characterized by that tolerance compensation means (6) is fastened to a section which encompasses the surface of the drive device (4) in a bow-shaped manner. [6] Grinder (1) according to one of claims 1 to 5, characterized by that the tolerance compensation means (6) is made in one piece with the force and / or form-locking element (5). [7] Grinder (1) according to one of claims 1 to 5, characterized by that the tolerance compensation means (6) is made of a soft component, in particular silicone, rubber, NBR or EPDM. [8] Grinder (1) according to claim 7, characterized by that the tolerance compensation agent (6) has a hardness of 30 to 90 Shore A, in particular 45 to 70 Shore A. [9] Grinder (1) according to one of claims 1 to 8, characterized by that the tolerance compensation means (6) has a spherical, ring-shaped, mushroom-shaped, cylindrical, conical, pyramid-shaped, tetrahedral and / or cuboid-shaped section. [10] Coffee machine (2) with a grinder (1) according to one of claims 1 to 9.

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