Coffee bean grinder

Abstract

The utility model discloses a coffee bean grinding machine which comprises a machine body, a tool bit is arranged on the machine body, and the tool bit is connected with the machine body through a detachable mechanism. According to the utility model, the machine body and the tool bit can be detachably mounted, and different grinding requirements can be met only by replacing tool bits of different models, so that the cost investment of overall purchase is greatly reduced, and the use requirements can be better met.

Description

Technical Field

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

[0002] A known coffee grinder is a device used to grind coffee beans into powder, and then make coffee by brewing the coffee powder. For the existing coffee grinders, the grinding device (blade head) is integrated with the grinder. For example, the coffee grinder disclosed in the Chinese utility model patent with the authorization announcement number CN201510169U includes a main body, a motor, a base, a blade assembly, a filter screen, a coffee bean cup, a switch assembly, and a coffee powder cup. The motor and the coffee bean cup are arranged inside the main body. The blade assembly is installed inside the coffee bean cup and is connected to the output shaft of the motor. The switch assembly is connected to the motor. A filter screen is arranged on the side wall of the coffee bean cup. The coffee bean cup is placed at an angle of 60° - 80° with the horizontal direction. A coffee powder cup is arranged on the side of the main body. The filter screen is at the opening of the coffee powder cup. The main body and the coffee powder cup are both arranged on the base. Since the existing coffee grinders are integrated, when different flavors of coffee need to be ground, in the prior art, the grinding of the coffee flavor that does not need to be ground is stopped, and then the grinding of the next coffee flavor is replaced. This will cause the taste of the previous flavor of coffee to appear in the first few cups of coffee ground with the new flavor, that is, the phenomenon of flavor mixing occurs, which greatly affects the user experience and taste. If a new coffee machine is purchased, the purchase cost is greatly increased. Secondly, when grinding coffee, the required grinding requirements (such as rotation speed, etc.) need to be adjusted. Frequent use of the same coffee grinder greatly increases the difficulty of adjusting the grinding. Based on the above phenomena, it is necessary to make improvements. Summary of the Utility Model

[0003] (1) Technical Problems to be Solved

[0004] In view of the deficiencies in the prior art, the utility model provides a coffee grinder. Its designed body is a general part, and only by replacing the blade head can various grinding requirements be provided, and the phenomenon of flavor mixing caused by grinding multiple coffee beans with the same blade head can be effectively avoided, and the need to purchase multiple grinders to meet the grinding requirements of different coffee beans can be avoided, solving the problem of high cost. Moreover, the disassembly and installation of the blade head and the body are fast and convenient, easy to operate, and convenient for popularization and application.

[0005] (2) Technical Solutions to be Adopted

[0006] In order to achieve the above purpose, the technical solutions adopted by the utility model are as follows:

[0007] A coffee grinder includes a body, and a blade head is arranged on the body. The blade head is connected to the body through a detachable mechanism.

[0008] Preferably, the detachable mechanism includes a locking member that can move back and forth on the body and at least two lugs provided on the upper side surface of the body. A locking groove is provided on the side surface of the cutter head, and at least two mounting grooves are provided on the side surface of the cutter head. The lugs are correspondingly installed in the mounting grooves to realize the positioning and installation of the cutter head on the upper side surface of the body, and when the locking member slides and locks in the locking groove, the cutter head is positioned and installed on the upper side surface of the body.

[0009] Preferably, the locking member includes a vertical hole and a transverse groove provided on the body. The vertical hole and the transverse groove are perpendicularly distributed, and the open end of the vertical hole is on the upper end surface of the body. A horizontal rod that moves horizontally is provided in the transverse groove, and a vertical rod is provided in the vertical hole. The vertical rod is provided on the horizontal rod and is perpendicularly connected to the horizontal rod.

[0010] Preferably, the vertical hole is in a long strip shape.

[0011] Preferably, both the mounting groove and the lug are arc-shaped, and the arc length of the arc-shaped mounting groove is greater than the arc length of the arc-shaped lug.

[0012] Preferably, the body includes a housing, a motor provided inside the housing, and a driving gear provided on the output shaft of the motor. A transmission gear is provided inside the housing. The driving gear and the transmission gear are connected by a transmission belt, and a rotating shaft is provided on the transmission gear. A first bearing is provided between the rotating shaft and the housing. A transmission shaft is provided inside the rotating shaft. The cutter head includes a housing and a feed hopper provided on the upper end surface of the housing. A powder outlet is provided on the lower end surface of the housing. A grinding knife is provided inside the housing, and an end cover is provided on one side end surface of the housing. A shaft rod is provided in the grinding knife, and the other end of the shaft rod is for the transmission shaft to be inserted and connected, and a second bearing is provided between the shaft rod and the end cover.

[0013] Preferably, the end cover and one side end surface of the housing are fixedly connected together by a locking bolt.

[0014] Preferably, an adaptive expansion ring is provided on the upper side surface of the housing in contact with the end face of the cutter head to solve the problems of shaking and noise caused by different clearances between different cutter heads due to production tolerances.

[0015] Preferably, the grinding knife is a flat knife or a taper knife or a ghost tooth.

[0016] (III) Technical effects to be achieved

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] First, a cutter head is provided on the body of the present utility model, and the cutter head is connected to the body through a detachable mechanism. Its design enables the fuselage and the cutter head to be quickly disassembled and installed, greatly reducing the difficulty of installation and disassembly, and being more conducive to large-scale promotion and application.

[0019] Second, the body of the present utility model is made into a universal part, and only by replacing the cutter head can more different models be realized, avoiding the investment in purchasing a whole new machine, greatly reducing the cost investment. Only by replacing the cutter head can the phenomenon of different flavors of coffee mixing be avoided and the requirements for the grinding particle shape of different coffee beans be met, which is more conducive to meeting the user's usage requirements, also conducive to greatly reducing the difficulty of adjusting grinding each time, further reducing the usage threshold, and enhancing the operability and mobility of the equipment.

[0020] Third, the detachable mechanism of the present utility model includes a locking part that can move back and forth on the body and at least two lugs provided on the upper side of the body. A locking groove is provided on the side of the cutter head, and at least two mounting grooves are provided on the side of the cutter head. The lugs are correspondingly installed in the mounting grooves to position and install the cutter head on the upper side of the body, and when the locking part slides and locks in the locking groove, the cutter head is positioned and installed on the upper side of the body. This kind of setting is reasonable, the structure is simple, it is convenient for production and manufacturing, reduces the cost investment in production and manufacturing, and the operation is extremely simple and convenient, being more conducive to large-area promotion and application. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the whole of the present utility model.

[0022] Figure 2 It is a schematic diagram in the main view direction of the present utility model.

[0023] Figure 3 It is Figure 2 A cross-sectional view taken along the A-A direction in

[0024] Figure 4 It is a schematic diagram of the decomposition of the body and the cutter head of the present utility model.

[0025] Figure 5 It is a schematic diagram of the whole cutter head of the present utility model.

[0026] In the figure: 1, the body; 2, the cutter head; 3, the detachable mechanism; 11, the housing; 12, the motor; 13, the driving gear; 14, the transmission gear; 15, the transmission belt; 16, the rotating shaft; 17, the first bearing; 18, the transmission shaft; 19, the adaptive expansion ring; 21, the outer shell; 22, the feed hopper; 23, the powder outlet; 24, the grinding cutter; 25, the end cover; 26, the shaft rod; 27, the second bearing; 28, the locking bolt; 31, the locking member; 32, the lug; 33, the locking groove; 34, the installation groove. Detailed implementation manner

[0027] In the description of the present utility model, it should be noted that when an element is referred to as "fixed to" or "arranged on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0028] In the description of the present utility model, it should be noted that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this utility model is usually placed during use. It is only for the convenience of describing the present utility model 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. Therefore, it cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, unless otherwise clearly and specifically defined. "Several" means one or more, unless otherwise clearly and specifically defined.

[0029] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] To make the objectives, technical solutions, and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the scope of the present utility model. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0031] Embodiment 1: Refer to Figure 1 , Figure 2 and Figure 3 . A coffee grinder includes a machine body 1, a cutter head 2 is arranged on the machine body 1, and the cutter head 2 is connected to the machine body 1 through a detachable mechanism 3. This is beneficial for replacing different cutter heads 2, so that the machine body 1 can become a common part, and only the cutter head 2 needs to be replaced. This is not only beneficial for later maintenance (repair and cleaning), but also more beneficial for grinding by replacing different cutter heads 2 according to the needs of users, avoiding the cost of overall purchase and reducing cost investment.

[0032] Embodiment 2: It can be described on the basis of Embodiment 1. As shown in Figure 3 and Figure 4 , the detachable mechanism 3 includes a locking member 31 that can move back and forth on the machine body 1 and at least two ear plates 32 arranged on the upper side surface of the machine body 1. A locking groove 33 is arranged on the side surface of the cutter head 2, and at least two mounting grooves 34 are arranged on the side surface of the cutter head 2. The ear plates 32 are correspondingly installed in the mounting grooves 34 to realize the positioning and installation of the cutter head 2 on the upper side surface of the machine body 1. When the locking member 31 slides and locks in the locking groove 33, the cutter head 2 is positioned and installed on the upper side surface of the machine body 1. When the locking member 31 slides out of the locking groove 33, the cutter head 2 can be detached from the upper side surface of the machine body 1. It can be seen that this realizes quick connection and disassembly, which is more beneficial for meeting the use needs of users.

[0033] Further illustration is as shown in Figure 3 and Figure 4 . The locking member 31 includes a vertical hole and a transverse groove arranged on the machine body 1. The vertical hole and the transverse groove are perpendicular to each other. The open end of the vertical hole is on the upper end surface of the machine body 1. A transverse rod that moves horizontally is arranged in the transverse groove, and a vertical rod is arranged in the vertical hole. The vertical rod is arranged on the transverse rod and is perpendicularly connected to the transverse rod. The vertical hole is in a long strip shape, preferably a stadium shape. This is beneficial for manually sliding the vertical rod back and forth, thereby realizing the horizontal movement of the transverse rod.

[0034] Even further illustration is as shown in Figure 3 and Figure 4As shown, there are two installation grooves 34 and two lugs 32, which makes the connection between the cutter head 2 and the machine body 1 more stable. Both the installation groove 34 and the lug 32 are arc-shaped. The arc length of the arc-shaped installation groove 34 is greater than the arc length of the arc-shaped lug 32. This setting is beneficial for adjusting the position when installing the cutter head 2 and is more conducive to the fitting installation of the locking member 31 and the locking groove 33.

[0035] Embodiment 3: It can be described on the basis of Embodiment 1 or Embodiment 2. For example, Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the machine body 1 includes a housing 11, a motor 12 arranged inside the housing 11, and a driving gear 13 arranged on the output shaft of the motor 12. A transmission gear 14 is arranged inside the housing 11. The driving gear 13 and the transmission gear 14 are connected by a transmission belt 15 to achieve transmission. A rotating shaft 16 is arranged on the transmission gear 14. A first bearing 17 is arranged between the rotating shaft 16 and the housing 11. This is beneficial for the rotation of the rotating shaft 16. A transmission shaft 18 is arranged inside the rotating shaft 16. The transmission shaft 18 inserted into the cutter head 2 is a square shaft. The cutter head 2 includes a housing 21 and a feed hopper 22 arranged on the upper end face of the housing 21. A powder outlet 23 is arranged on the lower end face of the housing 21. A grinding knife 24 is arranged inside the housing 21. The raw materials in the feed hopper 22 are ground by the grinding knife 24 and then discharged through the powder outlet 23. An end cover 25 is arranged on one side end face of the housing 21. A shaft rod 26 is arranged in the grinding knife 24. The other end of the shaft rod 26 is for the transmission shaft 18 to be inserted and connected. The shaft rod 26 and the end cover 25 are connected by a second bearing 27. This is beneficial for the rotating shaft 16 to drive the transmission shaft 18 to rotate, and the transmission shaft 18 drives the shaft rod 26 to rotate. Finally, the shaft rod 26 drives the grinding knife 24 to rotate, so as to achieve grinding of materials.

[0036] Among them, as shown in Figure 3 and Figure 5 The end cover 25 and one side end face of the housing 21 are fixedly connected together by a locking bolt 28. This is convenient for disassembly and installation. In this embodiment, three locking bolts 28 are used. This is beneficial for fixedly locking the end cover 25 and one side end face of the housing 21 together.

[0037] Such as Figure 4As shown in the figure, an adaptive expansion ring 19 is provided on the upper side of the housing 11 in contact with the end face of the cutter head 2. The adaptive expansion ring 19 is used to solve the problems of shaking and noise caused by different gaps between different cutter heads due to production tolerances. It should be noted that the adaptive expansion ring 19 has a certain elasticity. By this means, it is beneficial to reduce the gap between the cutter head 2 and the machine body 1, and it is also beneficial to keep the central axis consistent after the cutter head 2 is installed on the machine body 1, which is beneficial to the movement of the cutter head 2, thereby reducing the noise during operation. Moreover, due to the tolerance problems of the cutter head 2 and the machine body 1 itself, setting the adaptive expansion ring 19 can reduce the manufacturing difficulty of the cutter head 2 and the machine body 1, especially the manufacturing difficulty of the cutter head 2, and thus is also beneficial to reducing the input of production and manufacturing costs.

[0038] Among them, the grinding knife 24 can be a flat knife, a conical knife or a ghost tooth. There are various types and a large selection range. The flat knife grinds by shaving, and the coffee particles are in flakes. The flat knife grinds horizontally, with a short path, a high rotation speed, and more heat generated, which has a greater impact on the flavor of the coffee powder. The parallel grinding is more uniform, and at the same time, the fine powder increases; the conical knife grinds by rolling, and the coffee particles are in blocks. The conical knife grinds longitudinally, with a long path, a low rotation speed, and less heat generated, which can better retain the aroma of the coffee powder, and relatively less fine powder is ground; the ghost tooth grinds by grinding, and the coffee particles are close to round. The ghost tooth knife is mainly used for grinding coarse powder and cannot grind Italian fine powder, and is suitable for single - origin coffee for hand - brewing.

[0039] Among them, a controller is provided on the housing 11. The controller is connected to the motor 12. The start and stop of the motor 12 can be controlled through the controller. Generally, the controller includes a circuit board and a control switch. This is a well - known technology for those skilled in the art and will not be elaborated here. And the circuit board can be connected to a power cord. This is beneficial for the wired mode, or there is a power source inside the housing, and a lithium battery can be used. The power source is connected to the motor and the controller. This is beneficial for powering the motor through the power source, with various modes and a large selection range. This structure is simple, easy to implement, and reduces the manufacturing difficulty.

[0040] When the present utility model is in use, only by replacing the cutter head 2 can different grindings of materials (coffee) be achieved. In this way, the machine body 1 becomes a universal part, and only the cutter head 2 needs to be replaced according to the user's needs, which is beneficial to avoiding repurchasing the whole, and greatly reduces the cost input.

[0041] The standard parts used in this application document can all be purchased from the market. The specific connection methods of each part all adopt conventional means such as bolts and rivets that are mature in the prior art. The switches and internal components of the processor all adopt conventional models in the prior art, and their internal structures belong to the prior art structures. Workers can complete the normal operation of them according to the prior art manuals. Coupled with the circuit connection adopting the conventional connection method in the prior art, no specific description will be made here.

[0042] It should be noted that although the above-mentioned embodiments have been described in this article, the patent protection scope of the present utility model is not limited thereby. Therefore, based on the innovative concept of the present utility model, the changes and modifications made to the embodiments in this article, or the equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, and directly or indirectly applying the above technical solutions to other related technical fields, are all included in the patent protection scope of the present utility model.

Claims

1. A coffee grinder, comprising a body (1), characterized in that: A cutter head (2) is provided on the machine body (1), and the cutter head (2) is connected to the machine body (1) through a detachable mechanism (3). The detachable mechanism (3) includes a locking member (31) that can move back and forth on the machine body (1) and at least two lugs (32) provided on the upper side surface of the machine body (1). A locking groove (33) is provided on the side surface of the cutter head (2), and at least two mounting grooves (34) are provided on the side surface of the cutter head (2). The lugs (32) are correspondingly installed in the mounting grooves (34) to realize the positioning and installation of the cutter head (2) on the side surface of the machine body (1) part, and when the locking member (31) slides and locks in the locking groove (33), the cutter head (2) is positioned and installed on the upper side surface of the machine body (1).

2. The coffee grinder according to claim 1, characterized in that: The locking member (31) includes a vertical hole and a transverse groove provided on the machine body (1). The vertical hole and the transverse groove are perpendicularly distributed, and the open end of the vertical hole is on the upper end surface of the machine body (1). A transverse rod that can move horizontally is provided in the transverse groove, and a vertical rod is provided in the vertical hole. The vertical rod is provided on the transverse rod and is perpendicularly connected to the transverse rod.

3. The coffee grinder according to claim 2, characterized in that: The vertical hole is strip-shaped.

4. The coffee grinder according to claim 1 or 2 or 3, characterized in that: Both the mounting groove (34) and the lug (32) are arc-shaped, and the arc length of the arc-shaped mounting groove (34) is greater than the arc length of the arc-shaped lug (32).

5. The coffee grinder according to claim 1 or 2 or 3, characterized in that: The machine body (1) includes a housing (11), a motor (12) provided inside the housing (11), and a driving gear (13) provided on the output shaft of the motor (12). A transmission gear (14) is provided inside the housing (11). The driving gear (13) is connected to the transmission gear (14) through a transmission belt (15). A rotating shaft (16) is provided on the transmission gear (14). A first bearing (17) is provided between the rotating shaft (16) and the housing (11). A transmission shaft (18) is provided inside the rotating shaft (16). The cutter head (2) includes a housing (21) and a feed hopper (22) provided on the upper end surface of the housing (21). A powder outlet (23) is provided on the lower end surface of the housing (21). A grinding cutter (24) is provided inside the housing (21). An end cover (25) is provided on one side end surface of the housing (21). A shaft rod (26) is provided in the grinding cutter (24). The other end of the shaft rod (26) is for the transmission shaft (18) to be inserted and connected, and a second bearing (27) is provided between the shaft rod (26) and the end cover (25).

6. The coffee grinder according to claim 5, characterized in that: The end cover (25) and one side end surface of the housing (21) are fixedly connected together through a locking bolt (28).

7. The coffee grinder according to claim 5, wherein: An adaptive expansion ring (19) is provided on the upper side surface of the housing (11) in contact with the end surface of the cutter head (2).

8. The coffee grinder according to claim 5, wherein: The grinding cutter (24) is a flat cutter or a taper cutter or a ghost tooth cutter.

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