Bean grinder blade support and bean grinder

Abstract

The utility model discloses a coffee bean grinder blade support and a coffee bean grinder, comprising a support body, which is integrally formed, and is provided with an outer grinding disc mounting hole and a connecting shaft mounting hole, wherein the connecting shaft mounting hole comprises at least one bearing mounting position, and the hole wall of the bearing mounting position and the hole wall of the connecting shaft mounting hole are arranged in a continuous straight line, thereby improving the concentricity of the connecting shaft mounting hole and the outer grinding disc mounting hole.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee grinding equipment, in particular to a coffee bean grinder, a knife grinder, a support machine and a coffee bean grinder. Background Art

[0002] The grinding process is very important for coffee making. There are various independent and professional coffee grinders on the market. Based on the grinding drive method, coffee grinders are currently divided into two basic styles: electric grinders and manual grinders.

[0003] The uniformity of the grinder's ground particles is closely related to the assembly accuracy of the grinding assembly. The grinding assembly includes bearings, inner and outer grinding discs, and a connecting shaft. The connecting shaft mounts the inner grinding disc on the bracket through bearings. The assembly accuracy affects the coaxiality of the inner and outer grinding discs.

[0004] In order to facilitate assembly in the prior art, the bearing bracket and the outer grinding disc bracket are usually set separately and fixed on the grinder body respectively. Since the bearing bracket and the outer grinding disc bracket are set separately, the assembly accuracy is greatly reduced, which affects the coaxiality of the outer grinding disc and the inner grinding disc. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a grinder blade support and a grinder, so that the grinder assembly has high concentricity and the grinding coarseness is uniform. To achieve the above purpose, the present invention provides the following technical solutions:

[0006] The utility model provides a knife sharpening bracket for a coffee bean grinder, comprising a bracket body, which is integrally formed, and is provided with an outer grinding disc mounting hole and a connecting shaft mounting hole, wherein the connecting shaft mounting hole comprises at least one bearing mounting position, and the hole wall of the bearing mounting position and the hole wall of the connecting shaft mounting hole are arranged in a continuous straight line.

[0007] As a further improvement of the present invention, the bracket body is made of metal, alloy or plastic material, the alloy material includes aluminum alloy, and the plastic material includes ABS and PPS.

[0008] As a further improvement of the present invention, the bearing mounting position includes a first bearing mounting position and a second bearing mounting position, both the first bearing mounting position and the second bearing mounting position are mounted with bearings, and a positioning ring is arranged between the two bearings.

[0009] As a further improvement of the utility model, the outer grinding disc mounting hole and the connecting shaft mounting hole are milled on one side by a milling machine.

[0010] As a further improvement of the utility model, the main body bracket includes a lower mounting tube and an upper mounting tube, the outer grinding disc mounting hole is arranged on the lower mounting tube, the connecting shaft mounting hole is arranged on the upper mounting tube, the upper mounting tube and the lower mounting tube are connected by connecting ribs, and a bean inlet channel connected to the lower mounting tube is formed between the plurality of connecting ribs.

[0011] As a further improvement of the present invention, a first convex ring is extended from the upper end surface of the lower mounting cylinder, and the upper end surface of the first convex ring forms a smooth downwardly inclined guiding curved surface at the bean inlet channel.

[0012] As a further improvement of the utility model, a step is formed at the connection between the first convex ring and the lower mounting tube, and a straight line segment is provided on the outer ring surface of the first convex ring, and a mounting hole is provided on the straight line segment.

[0013] As a further improvement of the utility model, a fastener installation groove which penetrates the lower end surface of the installation bracket is opened on the hole wall of the outer grinding disc installation hole.

[0014] As a further improvement of the utility model, a second convex ring extends below the lower mounting tube, the hole wall of the second convex ring encloses an outer grinding disc mounting hole, a step is formed at the connection between the second convex ring and the lower mounting tube, and the lower mounting tube is provided with a mounting fastening hole at the step.

[0015] The utility model also provides a coffee bean grinder, comprising any one of the coffee bean grinder blade holders described above.

[0016] In summary, the utility model includes at least one of the following beneficial technical effects:

[0017] By setting the sharpening bracket as an integral molding, the corresponding bracket parts of the connecting shaft mounting hole and the outer grinding disc mounting hole do not need to be assembled again, thereby reducing the assembly error between the two. By setting the hole wall of the bearing mounting position and the hole wall of the connecting shaft mounting hole as a continuous straight line, the concentricity of the connecting shaft mounting hole and the outer grinding disc mounting hole is improved.

[0018] Setting the bracket body to metal, alloy or plastic material can achieve a good load-bearing effect, thereby making the overall strength of the bracket body higher. The alloy material is made with high precision, which ensures the accuracy of the bracket body during processing and achieves lightweighting of the knife sharpening bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a knife sharpening bracket according to one embodiment of the utility model;

[0020] Figure 2 It is a cross-sectional schematic diagram of a knife sharpening bracket according to one embodiment of the utility model;

[0021] Figure 3This is a schematic diagram of the structure of a knife sharpening bracket according to one embodiment of the utility model;

[0022] Figure 4 It is a schematic diagram of the installation structure of the knife sharpening installation bracket of the utility model.

[0023] Figure numerals: 1. bracket body; 2. outer grinding disc mounting hole; 3. connecting shaft mounting hole; 4. bearing mounting position; 5. first bearing mounting position; 6. second bearing mounting position; 7. bearing; 8. positioning ring; 9. lower mounting cylinder; 10. upper mounting cylinder; 11. connecting rib; 12. bean feeding channel; 13. first convex ring; 14. guiding curved surface; 15. step; 16. mounting hole; 17. fastener mounting groove; 18. second convex ring; 19. mounting fastening hole; 20. main frame bracket; 21. outer grinding disc; 22. inner grinding disc; 23. connecting shaft; 24. baffle. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Unless otherwise specified, "plurality" means two or more.

[0026] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection. It can also be a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] Although the embodiments of the utility model have been shown and described, those skilled in the art should understand that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the utility model, and the scope of the utility model is defined by the claims and their equivalents. Improvements made without creative work should be included in the scope of protection of the utility model.

[0028] One specific implementation example is Figure 1-3 As shown, a grinder stand for a coffee bean grinder comprises a stand body 1, on which an outer grinding disc mounting hole 2 and a connecting shaft mounting hole 3 are arranged, the connecting shaft mounting hole 3 comprises at least one bearing mounting position 4, preferably two, the stand body 1 is integrally formed, and the material can be selected from metal, alloy material or plastic material, the alloy material comprises aluminum alloy, the preparation process of the stand body 1 can be selected from casting integrally formed, block material milling forming, or injection casting integrally formed combined with milling forming process, which greatly improves the concentricity of the outer grinding disc mounting hole 2 and the connecting shaft mounting hole 3.

[0029] The hole wall of the bearing installation position 4 and the hole wall of the connecting shaft installation hole 3 are arranged in a continuous straight line, and the bearing 7 and the bearing installation position 4 are interference fit. When there are two bearing installation positions 4, a positioning ring 8 is arranged between the two bearings 7, and the positioning ring 8 respectively conflicts with the bearings 7 arranged on both sides to limit the upper bearing 7 from moving downward and the lower bearing 7 from moving upward. Preferably, the upper and lower ends of the connecting shaft installation hole 3 are respectively provided with limiting members that limit the two bearings 7 from coming out, and the limiting members can be selected as limiting gaskets or limiting pins, etc., which are known limiting members in the prior art.

[0030] When the bracket body 1 is selected as a block material for milling, the alloy raw material is first clamped by a fixture, and the outer grinding disc mounting hole 2 is first drilled on one side of the alloy block by a milling device, and the milling device then drills the connecting shaft mounting hole 3 on the same side. The hole diameter of the connecting shaft mounting hole 3 is smaller than the outer grinding disc mounting hole 2. By setting the side wall of the connecting shaft mounting hole 3 to a straight line, the traditional step 15 type bearing 7 mounting hole 16 is abandoned, and the connecting shaft mounting hole 3 and the outer grinding disc mounting hole 2 can be milled on one side by a positioning and installed milling device, avoiding the concentricity error in the installation process of multiple milling devices in the prior art.

[0031] After the outer grinding disc mounting hole 2 and the connecting shaft mounting hole 3 are milled and formed, grinding and drilling are performed on the outer periphery of the semi-finished product, so that the main body bracket includes a lower mounting tube 9 and an upper mounting tube 10, the outer grinding disc mounting hole 2 is arranged in the lower mounting tube 9, and the connecting shaft mounting hole 3 is arranged in the upper mounting tube 10, and the upper mounting tube 10 and the lower mounting tube 9 are connected by connecting ribs 11, and a bean feeding channel 12 connected to the lower mounting tube 9 is formed between several connecting ribs 11, and a first convex ring 13 is extended from the upper end surface of the lower mounting tube 9, and the upper end surface of the first convex ring 13 forms a smooth downwardly inclined guide curved surface 14 at the bean feeding channel 12, so as to more smoothly guide the beans in the bean storage chamber to enter the grinding chamber evenly.

[0032] A step 15 is formed at the connection between the first convex ring 13 and the lower mounting tube 9. A straight line segment is provided on the outer ring surface of the first convex ring 13. The straight line segment is used to cooperate with the grinder housing to form an anti-rotation structure. A mounting hole 16 is provided on the straight line segment. The first convex ring 13 of the grinder bracket is used to be sleeved with the main frame bracket 20. The main frame bracket 20 is connected to the knife grinding bracket through the fasteners to the mounting hole 16, so that the concentricity of the main frame bracket and the knife grinding bracket for installing the coarse and fine adjustment component is higher, so as to improve the adjustment accuracy of the coarse and fine adjustment component.

[0033] The outer grinding disc 21 is interference fit with the outer grinding disc mounting hole 2. A fastener mounting groove 17 that penetrates the lower end surface of the mounting bracket is opened on the hole wall of the outer grinding disc mounting hole 2. After the outer grinding disc 21 is installed in the outer grinding disc mounting hole 2, the outer grinding disc 21 is locked by installing a fastener in the fastener mounting groove 17 to prevent the outer grinding disc 21 from rotating and falling out. The fastener can be selected as a screw or a pin, etc.

[0034] As a preferred embodiment, a second convex ring 18 extends below the lower mounting cylinder 9, and the hole wall of the second convex ring 18 encloses an outer grinding disc mounting hole 2. A step 15 is formed at the connection between the second convex ring 18 and the lower mounting cylinder 9. The lower mounting cylinder 9 is provided with a mounting fastening hole 19 at the step 15. When the sharpening bracket is assembled, a baffle 24 is installed below the lower mounting cylinder 9. The connecting portion of the baffle 24 is connected to the mounting fastening hole 19 and extends radially toward the side of the outer grinding disc mounting hole 2 to form a baffle ring for receiving the outer grinding disc 21. The baffle ring not only serves to receive the outer grinding disc 21, but also forms a baffle ring arranged around the powder outlet, which can effectively prevent flying powder.

[0035] like Figure 4As shown, the utility model also provides a specific installation method of the above-mentioned knife sharpening bracket in the grinder, the knife sharpening bracket is installed on the grinder housing, the outer grinding disc 21 is installed in the outer grinding disc installation hole 2, the connecting shaft 23 is connected to the connecting shaft installation hole 3 through the bearing 7, the connecting shaft 23 passes through the connecting shaft installation hole 3 and is connected to the inner grinding disc 22 at one end, the inner grinding disc 22 and the outer grinding disc 21 are clearance-matched, a powder receiving assembly is arranged below the knife sharpening bracket, and a host bracket 20 is connected to the upper end of the bracket body 1. The knife sharpening bracket of the utility model can be installed in a manual grinder, and can also be applied to an electric grinder.

[0036] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A coffee bean grinder blade support, characterized in that: The invention comprises a support body (1), the support body (1) is integrally formed, the support body (1) is provided with an outer grinding disc mounting hole (2) and a connecting shaft mounting hole (3), the connecting shaft mounting hole (3) comprises at least one bearing mounting position (4), and the hole wall of the bearing mounting position (4) and the hole wall of the connecting shaft mounting hole (3) are arranged in a continuous straight line.

2. The coffee bean grinder blade support according to claim 1, characterized in that: The support body (1) is made of metal, alloy or plastic material, and the alloy material includes aluminum alloy.

3. The coffee bean grinder blade support according to claim 2, characterized in that: The bearing mounting position (4) comprises a first bearing mounting position (5) and a second bearing mounting position (6), wherein the first bearing mounting position (5) and the second bearing mounting position (6) are both mounted with bearings (7), and a positioning ring (8) is arranged between the two bearings (7).

4. The coffee bean grinder blade support according to claim 1 or 2, characterized in that: The outer grinding disc mounting hole (2) and the connecting shaft mounting hole (3) are milled on one side by a milling machine.

5. The coffee bean grinder blade support according to claim 1, characterized in that: The support body (1) comprises a lower mounting tube (9) and an upper mounting tube (10); the outer grinding disc mounting hole (2) is arranged on the lower mounting tube (9); the connecting shaft mounting hole (3) is arranged on the upper mounting tube (10); the upper mounting tube (10) and the lower mounting tube (9) are connected by connecting ribs (11); and a bean feeding channel (12) communicating with the lower mounting tube (9) is formed between a plurality of connecting ribs (11).

6. The coffee bean grinder blade support according to claim 5, characterized in that: A first convex ring (13) extends from the upper end surface of the lower mounting cylinder (9), and the upper end surface of the first convex ring (13) forms a smooth downwardly inclined guide curved surface (14) at the bean inlet channel (12).

7. The coffee bean grinder blade support according to claim 6, characterized in that: A step (15) is formed at the connection between the first convex ring (13) and the lower mounting tube (9), and a straight line segment is provided on the outer ring surface of the first convex ring (13), and a mounting hole (16) is provided on the straight line segment.

8. The coffee bean grinder blade support according to claim 5, characterized in that: A fastener installation groove (17) which penetrates the lower end surface of the installation bracket is formed on the hole wall of the outer grinding disc installation hole (2).

9. The coffee bean grinder blade support according to claim 8, characterized in that: A second convex ring (18) extends below the lower mounting tube (9), and the hole wall of the second convex ring (18) encloses an outer grinding disc mounting hole (2). A step (15) is formed at the connection between the second convex ring (18) and the lower mounting tube (9), and the lower mounting tube (9) is provided with a mounting fastening hole (19) at the step (15).

10. A coffee bean grinder, characterized in that: A coffee bean grinder blade support comprising the coffee bean grinder blade support according to any one of claims 1 to 9.

Images