Coffee bean grinder

Abstract

The utility model relates to the technical field of coffee bean grinders and discloses a coffee bean grinder which comprises a shell, a base, a grinding assembly and a stopping assembly, the grinding assembly comprises a power assembly and a cutter assembly for grinding coffee beans, and the cutter assembly comprises an inner cutter and an outer cutter; the stopping assembly comprises an adjusting knob, a knob fixing seat and a limiting needle assembly, pressure can be applied to the end face of the outer cutter through the adjusting knob and the knob fixing seat to stop the outer cutter, the adjusting knob can be completely fixed through the limiting needle assembly, and the possibility that the outer cutter rotates is further reduced; the situation that the outer cutter of the cutter assembly rotates along with the inner cutter due to resistance and is difficult to stop can be avoided, the interval gap between the inner cutter and the outer cutter can be kept unchanged, finally, when the coffee bean grinder works normally, the outer cutter stops, coffee powder generated by grinding is uniform in thickness, and the flavor of the coffee powder is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee grinders, and particularly relates to a coffee grinder. Background Art

[0002] A coffee grinder, that is, a coffee mill, is a powder grinding tool that grinds coffee beans into coffee powder when the cutter of the grinder rotates rapidly driven by a motor. Generally, the cutter of a coffee grinder includes an inner cutter that rotates with the motor or the motor, and an outer cutter that is fixedly connected to the outer shell. The cutters of common coffee grinders on the market are mainly of two types: conical cutters and flat cutters. Sometimes, when the motor rotates, the outer cutter may rotate together with the inner cutter due to resistance, which will cause the gap between the outer cutter and the inner cutter to change, resulting in abnormal changes in the fineness of the coffee powder ground by the grinder, and further affecting the poor coffee flavor.

[0003] The traditional flat cutter can achieve the effect of stopping the outer cutter by pressing the outer cutter, but it is difficult to add a pressing stop component to stop the outer cutter for the conical cutter because the thickness of its outer cutter is large. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the technical defect that it is difficult to stop the outer cutter as the resistance changes during grinding, which leads to uneven fineness of the coffee powder ground from coffee beans. For this reason, a coffee grinder is provided:

[0005] A coffee grinder includes the outer shell of the grinder, and further includes:

[0006] A grinding assembly that can grind coffee beans, which includes a power assembly and a cutter assembly. The cutter assembly includes an inner cutter connected to the power assembly and an outer cutter connected to the outer shell;

[0007] A stop assembly that can stop the outer cutter. The stop assembly includes an adjustment knob, a knob fixing seat connected to the outer shell, and a limit pin assembly. Among them:

[0008] The adjustment knob is sleeved in the knob fixing seat. A plurality of limit grooves are provided on the outer circumferential cylindrical surface of the adjustment knob, and the knob fixing seat is provided with a first through hole; the limit pin assembly includes a limit pin and a restricting member. The limit pin is inserted into the first through hole, the tip of the limit pin matches the limit groove of the adjustment knob, and the restricting member is fixedly connected to the knob fixing seat. The restricting member limits the axial movement of the limit pin in the first through hole, so that the adjustment knob and the knob fixing seat can be locked and loosened.

[0009] In some preferred embodiments, the first through hole is a stepped hole, and a second through hole that only allows the tip of the limit pin to be inserted is provided on one side close to the inner wall of the knob fixing seat.

[0010] In some preferred embodiments, the limiting needle assembly further includes a spring, and the spring is installed in the first through hole and sleeved on the limiting needle.

[0011] In some preferred embodiments, the limiting grooves are evenly distributed on the outer peripheral cylindrical surface of the adjusting knob.

[0012] In some preferred embodiments, the bottom of the adjusting knob is provided with a first external thread whose diameter is larger than the diameter of the circumferential cylinder of the adjusting knob; the knob fixing seat is tubular, and its inner wall is a stepped inner wall, and the stepped inner wall is provided with a first internal thread, and the first internal thread can match the first external thread.

[0013] In some preferred embodiments, the power assembly includes a power source capable of providing rotational power for the inner cutter and a power assembly fixing seat capable of fixing the power source.

[0014] In some preferred embodiments, the power component fixing seat is connected to the housing to fix the power source, and the power component fixing seat is connected to the knob fixing seat.

[0015] In some preferred embodiments, the power component fixing seat is connected to a powder outlet nozzle.

[0016] In some preferred embodiments, the housing is connected with a sliding guide groove, the sliding guide groove is slidably connected with a material receiving bracket, and the material receiving bracket can receive a material receiving carrier.

[0017] Compared with the prior art, the utility model provides a coffee bean grinder with the following beneficial effects:

[0018] The utility model can stop the outer cutter of the cutter assembly through the adjusting knob, the knob fixing seat and the limiting needle of the stop assembly. Specifically, the adjusting knob is provided with a limiting groove, the knob fixing seat is connected to the shell of the coffee bean grinder, and the knob fixing seat is provided with a through hole capable of accommodating the needle head of the limiting needle to match the limiting groove. The adjusting knob can be supported by the needle head and the limiting groove. The adjusting knob and the knob fixing seat are sleeved to apply pressure to the top surface of the outer cutter to stop the outer cutter during grinding, thereby making the coffee powder produced by grinding uniform in thickness and not affecting the flavor of the coffee.

[0019] Secondly, evenly distributed limit grooves are provided on the outer cylindrical surface of the adjusting knob. Considering that the limit grooves need to match the needle, evenly arranged limit grooves can help the two match. Specifically, when the needle and the limit grooves cannot be completely aligned, the needle can apply force to the adjusting knob to drive the adjusting knob to rotate so that the needle matches the limit groove.

[0020] Thirdly, through the spring of the limit pin assembly, it is possible to achieve the rebound of the limit pin when the limit pin is pulled out and the adjustment knob is adjusted, which can make the connection between the limit pin and the adjustment knob and the knob fixing seat more gentle and facilitate replacement, installation and maintenance. Brief Description of the Drawings

[0021] The following further elaborates on the specific embodiments of the present invention in conjunction with the drawings, where:

[0022] Figure 1 is a three-dimensional schematic diagram of the present invention;

[0023] Figure 2 is an exploded schematic diagram of the present invention;

[0024] Figure 3 is an exploded schematic diagram of the stop component of the present invention;

[0025] Figure 4 is an exploded schematic diagram of the limit pin assembly of the present invention;

[0026] In the figures: 1, housing; 2, base; 3, motor; 4, inner cutter; 5, outer cutter; 6, adjustment knob; 7, knob fixing seat; 8, first through hole; 9, limit pin; 10, powder outlet nozzle; 11, sliding guide groove; 12, material receiving bracket; 13, material receiving cup; 14, restricting member. Specific Embodiments

[0027] The following describes the preferred embodiments of the present invention in conjunction with the drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention and are not used to limit the present invention.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "above", "one side", "bottom", "both ends", etc. are based on the orientation or positional relationships 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 should not be construed as a limitation to the present invention.

[0029] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "set", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In order to overcome the technical defect that the outer cutter of the cutter assembly is difficult to stop due to the change of resistance, resulting in uneven thickness of the ground coffee beans during grinding, the utility model provides a coffee grinder, which can stop the outer cutter, avoid the change of the gap between the outer cutter and the inner cutter caused by the rotation due to resistance, ensure the uniformity and consistency of the thickness of the ground coffee beans, and prevent the coffee flavor produced by the final ground coffee beans from being poor.

[0031] As Figures 1 to 4 shown, a coffee grinder of the present application includes the outer shell of the coffee grinder, and further includes:

[0032] A grinding assembly capable of grinding coffee beans, which includes a power assembly and a cutter assembly. The cutter assembly includes an inner cutter 4 connected to the power assembly and an outer cutter 5 connected to the outer shell;

[0033] A stopping assembly capable of stopping the outer cutter 5. The stopping assembly includes an adjusting knob 6, a knob fixing seat 7 connected to the outer shell, and a limit pin assembly. Among them:

[0034] The adjusting knob 6 is sleeved in the knob fixing seat 7. A plurality of limit grooves are provided on the outer circumferential cylindrical surface of the adjusting knob 6. The knob fixing seat 7 is provided with a first through hole 8; the limit pin assembly includes a limit pin 9 and a limiting member 14. The limit pin 9 can be inserted into the first through hole 8, and the needle head of the limit pin 9 can match the limit groove of the adjusting knob 6. The limiting member 14 is fixed to the knob fixing seat 7, and the limiting member 14 limits the axial movement of the limit pin 9 in the first through hole 8, so that the adjusting knob 6 and the knob fixing seat 7 can be locked and loosened.

[0035] As Figure 2 and 3 shown, by installing the adjusting knob 6 above the outer cutter 5, connecting the knob fixing seat 7 to the outer shell 1, and sleeving the adjusting knob 6 in the knob fixing seat 7, the coffee grinder disclosed in the present application can apply pressure to the end face of the outer cutter 5 axially to stop it during the grinding of the coffee grinder.

[0036] It can be known that the inner cutter 4 can cut and grind the coffee beans placed in the coffee grinder under the drive of the power component. In order to fully exert the grinding effect and avoid tool wear caused by direct contact between the inner and outer cutters, it is necessary to maintain a certain gap between the inner cutter 4 and the outer cutter 5. The coffee beans are in contact with the outer cutter 5 while being cut and ground by the inner cutter 4 and are cut and ground by the outer cutter. As the grinding progresses, the shape of the coffee beans continuously changes and the resistance they generate against the outer cutter also changes continuously. The outer cutter 5 may be actuated by this resistance to rotate in the same direction as the inner cutter 4. This co-rotation will cause the gap between the inner and outer cutters to change, resulting in abnormal changes in the fineness of the coffee powder produced by grinding, that is, the coffee powder produced by grinding is uneven, which will ultimately have an adverse impact on the coffee flavor.

[0037] When a traditional coffee grinding machine is working normally, it is necessary to press the outer cutter tightly to completely brake it. To achieve this purpose, when a traditional coffee grinding machine is limited, an institution will be set outside the knob fixing seat 7 to limit the adjusting knob 6. A relatively common form is to set a counterbore in the outer shell and set a limit pin assembly that can be inserted into the counterbore on the knob fixing seat 7 or the adjusting knob 6, and limit the adjusting knob 6 by pressing the limit pin assembly, thereby preventing the outer cutter 5 from being driven to rotate.

[0038] In the utility model of this application, considering that the limit pin 9 of the limit pin assembly in this limit form is relatively easy to be damaged, the installation, maintenance and replacement are relatively complex and it is difficult to directly observe, a limit pin assembly that can be visually seen and is connected to the knob fixing seat 7 and can be pulled out and cooperate with the adjusting knob 6 is selected to complete the limit of the adjusting knob 6.

[0039] According to the stop component solution including the pull-out limit pin assembly, a limit groove is provided on the outer circumferential column surface of the adjusting knob 6, and a first through hole 8 is provided on the knob fixing seat 7. The limit pin 9 is inserted into the first through hole 8 and its needle head matches the limit groove provided on the adjusting knob 6 to be able to brake the adjusting knob 6 to make it stop, ultimately avoiding the situation that the outer cutter 5 cannot stop, resulting in uneven fineness of the coffee powder produced by grinding and affecting the coffee flavor.

[0040] During specific work, pull up the limit pin 9, and the adjusting knob 6 can be rotated to the position where the fineness of the coffee powder to be ground is required. Pressing the limit pin 9 back to the position matching the adjusting knob 6 can completely brake the adjusting knob, and then stop the outer cutter; and considering that pulling up the limit pin 9 may cause the limit pin assembly to fall off, the limiting member 14 is connected to the knob fixing seat 7 and can limit the limit pin 9 in the first through hole 8 to prevent the limit pin 9 from falling off, and can allow the limit pin 9 to retain a certain axial movement distance, thereby realizing two situations: the limit pin 9 is matched with the limit groove to lock the adjusting knob 6, and the needle head of the limit pin 9 leaves the limit groove to loosen the adjusting knob 6.

[0041] In some preferred embodiments, the first through-hole 8 is a stepped hole, and a second through-hole for only the tip of the limit pin 9 to insert is provided on one side close to the inner wall of the knob fixing seat 7. As Figure 4 shown, in some embodiments of the present application, there is a portion larger than the tip behind the tip of the limit pin 9. Setting the first through-hole 8 as a stepped hole can make such a limit pin 9 only have its tip protruding from the inner wall of the knob fixing seat 7, so that the spring installed in the first through-hole 8 is only within the first through-hole.

[0042] In some preferred embodiments, the limit pin assembly further includes a spring, and the spring is installed in the first through-hole 8 and sleeved on the limit pin 9. Considering that the user may forget to press the tip of the limit pin 9 after pulling out the limit pin 9, so that it can be re-matched with the limit groove of the adjustment knob 6 for limiting. Through the spring of the limit pin assembly, it can help the limit pin 9 to rebound when the limit pin 9 is pulled out and the adjustment knob 6 is adjusted. Specifically, one end of the spring is connected to the limiting member 14, and the other end abuts against the limit pin 9, so that the spring remains in a compressed state when the limit pin 9 is not pulled out and in a tensioned state when the limit pin 9 is pulled out.

[0043] In some preferred embodiments, the limit grooves are evenly distributed on the outer circumferential surface of the adjustment knob 6. The limit grooves provided on the outer circumferential surface of the adjustment knob 6 are evenly distributed. Considering that the limit grooves need to be matched with the tips, evenly setting the limit grooves can help the two to be matched. Specifically, when the tip and the limit groove cannot be completely aligned, the tip can apply a force to drive the adjustment knob 6 to rotate so that the tip and the limit groove are matched.

[0044] In some preferred embodiments, the bottom of the adjustment knob 6 is provided with a first external thread with a diameter larger than the diameter of the circumferential surface of the adjustment knob 6. The knob fixing seat 7 is tubular, and its inner wall is a stepped inner wall, and the stepped inner wall is provided with a first internal thread, and the first internal thread can be matched with the first external thread.

[0045] As Figure 3 shown, in the coffee grinder disclosed in the present application, the first external thread of the adjustment knob 6 is the acting part directly applying a pressing force to the external tool. The diameter of the first external thread is larger than the diameter of the circumferential surface of the adjustment knob 6 and is matched with the first internal thread provided on the stepped inner wall of the knob fixing seat 7, which can strengthen the pressing action of the adjustment knob 6 on the external tool 5, and the larger contact area can protect the adjustment knob 6 and improve its service life.

[0046] In some preferred embodiments, the power assembly includes a power source capable of providing rotational power for the inner cutter 4 and a power assembly fixing base capable of fixing the power source; the power assembly fixing base is connected to the housing 1 to fix the power source, and the power assembly fixing base is connected to the knob fixing base 7; the power assembly fixing base is connected with a powder outlet nozzle 10; the housing 1 is connected with a sliding guide groove 11, and the sliding guide groove 11 is slidably connected with a material receiving bracket 12, and the material receiving bracket 12 can receive the material receiving carrier.

[0047] As Figure 1 and Figure 2 shown, in the coffee grinder disclosed in the present application, the power source is the motor 3, and the power assembly fixing base is the motor fixing base. The motor fixing base is connected to the housing 1 to further fix the motor 3, which can ensure the stable power transmitted by the motor 3 to the inner cutter. The connection between the motor fixing base and the knob fixing base 7 indirectly connects the knob fixing base 7 and the housing 1, which can ensure the reliable action of the adjusting knob 6 that generates a pressing effect through the knob fixing base 7. Moreover, connecting the housing 1 and the knob fixing base 7 through the motor fixing base is convenient for manufacturing and maintenance, simplifies the complex process required for an integrated housing, and can accommodate different types and sizes of power sources according to the needs of the corresponding coffee grinder. It can be understood that in the figure, the material receiving carrier is the receiving cup 13, and the connection of the motor fixing base with the powder outlet nozzle 10 enables the ground coffee powder to flow out therefrom. The connection of the housing 1 with the sliding guide groove 11 is considered for the different sizes of the receiving cup 13 or other material receiving carriers.

[0048] The working principle of a coffee grinder of the present utility model is:

[0049] A coffee grinder can avoid the situation that the outer cutter of the cutter rotates and is difficult to stop due to the resistance when grinding coffee beans as the inner cutter rotates. It includes a housing, a base, a grinding assembly and a stopping assembly. Among them, the grinding assembly includes a power assembly and a cutter assembly for grinding coffee beans, and the cutter assembly includes an inner cutter and an outer cutter; the stopping assembly includes an adjusting knob, a knob fixing base and a limit pin assembly. By the adjusting knob and the knob fixing base, pressure can be applied to the end face of the outer cutter to stop it, and by the limit pin assembly, the adjusting knob can be completely fixed, further reducing the possibility of the outer cutter rotating, keeping the gap between the inner cutter and the outer cutter unchanged, and finally stopping the outer cutter when the coffee grinder is working properly, thereby ensuring that the ground coffee powder is of uniform fineness and does not affect the flavor of the coffee powder.

[0050] For other structures of a coffee grinder in this embodiment, reference can be made to the prior art.

[0051] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity in description, not all possible combinations of the technical features in the above embodiments are described. As mentioned above, these are only the preferred embodiments of the present utility model, and do not impose any formal restrictions on the present utility model. Therefore, any combination, modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model, as long as there is no contradiction in the combination of these technical features, still fall within the scope of the technical solution of the present utility model.

Claims

1. A coffee bean grinder, comprising a housing of the coffee bean grinder, characterized in that: Also includes: A grinding assembly, the grinding assembly is capable of grinding coffee beans, and comprises a power assembly and a cutter assembly, wherein the cutter assembly comprises an inner cutter connected to the power assembly and an outer cutter connected to the housing; A stop assembly, which can stop the external tool, and includes an adjusting knob, a knob fixing seat connected to the housing, and a stop pin assembly, wherein: The adjusting knob is sleeved in the knob fixing seat, the outer cylindrical surface of the adjusting knob is provided with a plurality of limit grooves, and the knob fixing seat is provided with a first through hole; the limit needle assembly comprises a limit needle and a limit member, the limit needle is inserted into the first through hole, the needle head of the limit needle matches the limit groove of the adjusting knob, the limit member is fixedly connected to the knob fixing seat, and the limit member limits the axial movement of the limit needle in the first through hole, so that the adjusting knob and the knob fixing seat can be locked and released.

2. The coffee bean grinder according to claim 1, characterized in that: The first through hole is a stepped hole, and a second through hole is provided on one side of the first through hole close to the inner wall of the knob fixing seat for only accommodating the needle head of the limiting needle to be inserted.

3. The coffee bean grinder according to claim 2, characterized in that: The limiting needle assembly further includes a spring, which is installed in the first through hole and sleeved on the limiting needle.

4. The coffee bean grinder according to claim 1, characterized in that: The limiting grooves are evenly distributed on the outer peripheral cylindrical surface of the adjusting knob.

5. The coffee bean grinder according to claim 1, characterized in that: The bottom of the adjusting knob is provided with a first external thread having a diameter greater than the diameter of the circumferential cylindrical surface of the adjusting knob; The knob fixing seat is tubular, and its inner wall is a stepped inner wall. The stepped inner wall is provided with a first inner thread, and the first inner thread can match the first outer thread.

6. The coffee bean grinder according to claim 1, characterized in that: The power assembly comprises a power source capable of providing rotational power for the inner cutter and a power assembly fixing seat capable of fixing the power source.

7. The coffee bean grinder according to claim 6, characterized in that: The power component fixing seat is connected to the housing to fix the power source, and the power component fixing seat is connected to the knob fixing seat.

8. The coffee bean grinder according to claim 6, characterized in that: The power component fixing seat is connected with a powder outlet nozzle.

9. The coffee bean grinder according to claim 1, characterized in that: The shell is connected with a sliding guide groove, the sliding guide groove is slidably connected with a material receiving bracket, and the material receiving bracket can receive a material receiving carrier.

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