CN115054115A - Bean grinding device of coffee machine - Google Patents

Abstract

The invention provides a bean grinding device of a coffee machine, which relates to the technical field of bean grinding of coffee machines and comprises a discharging funnel, a grinding mechanism and a receiving funnel which are sequentially connected; the grinding mechanism comprises a sleeve body and an inner grinding wheel, the inner grinding wheel is rotatably positioned in the sleeve body, and a first grinding surface is formed on the inner wall of the sleeve body; a second grinding surface is correspondingly formed on the outer wall of the inner grinding wheel, and a grinding space is formed between the first grinding surface and the second grinding surface; the inner grinding wheel is connected with the driving assembly, and the sleeve body is connected with the adjusting assembly; the material receiving funnel is positioned below the grinding mechanism. The coffee bean grinding device has the beneficial effects that the sleeve body is adjusted by the adjusting assembly, so that the position between the sleeve body and the inner grinding wheel is changed, namely, the distance between the first grinding surface and the second grinding surface is changed, the grinding thickness of coffee beans can be adjusted, and the coffee bean grinding device is suitable for different drinking taste requirements.

Description

Grinding device for coffee machine

technical field

The invention relates to the technical field of coffee grinders, in particular to a coffee grinder device.

Background technique

Because coffee contains caffeine, caffeine can stimulate the nerves, heart and respiratory system. Drinking coffee in moderation can refresh the mind and reduce fatigue; in addition, caffeine also has a diuretic effect, which can promote excess sodium in the kidneys and blood. Ions are excreted out of the body and have certain benefits for the cardiovascular system, so coffee has become a favorite daily necessities. However, there is a problem of flavor loss in coffee powder products. The higher the quality of single-product coffee beans, the more half of the flavor will be lost within three days after grinding. Therefore, freshly ground coffee grinders are launched on the market.

The coffee grinder usually includes a feeding funnel, a grinding component and a feeding funnel that are connected in sequence from top to bottom. After the coffee beans enter from the feeding funnel, they are ground by the grinding component to form powder and enter the powder outlet. The device falls into the hopper. However, the disadvantage of the existing bean grinding device technology on the market is that the coffee powder is often blocked in the powder outlet device after a certain period of use. Based on this, it is necessary to provide a bean grinding device for a coffee machine that can solve the above problems.

SUMMARY OF THE INVENTION

The present invention overcomes the shortcomings of the prior art, and provides a bean grinding device for a coffee machine. The adjusting component adjusts the sleeve body, so that the position between the sleeve body and the inner grinding wheel changes, that is, the first grinding surface and the second grinding surface are adjusted. The distance between the grinding surfaces changes, so that the grinding thickness of the coffee beans can be adjusted, so that after the coffee beans are ground, the powder directly falls into the receiving funnel.

In order to solve the above-mentioned technical problems, the present invention is achieved through the following technical solutions:

A bean grinding device of a coffee machine, comprising a feeding funnel, a grinding mechanism and a feeding funnel which are connected in sequence;

The grinding mechanism includes a sleeve body and an inner grinding wheel, the inner grinding wheel rotates and is located in the sleeve body, the inner wall of the sleeve body is formed with a first grinding surface; the outer wall of the inner grinding wheel is correspondingly formed with a second grinding surface, so A grinding space is formed between the first grinding surface and the second grinding surface;

The inner grinding wheel is connected with the drive assembly, and the sleeve body is connected with the adjustment assembly;

The receiving funnel is located below the grinding mechanism.

Further, the sleeve body includes a grinding sleeve located inside, the first grinding surface is located on the inner wall of the grinding sleeve; the first grinding surface gradually narrows from the upper and lower ends to the middle, and the second grinding surface is The grinding surface gradually expands from top to bottom.

Furthermore, the first grinding surface includes a first coarse tooth area and a first fine tooth area connected from top to bottom, and the second grinding surface includes a second coarse tooth area and a second fine tooth connected from top to bottom The first coarse tooth region corresponds to the second coarse tooth region, and the first fine tooth region corresponds to the second fine tooth region.

Further, the drive assembly includes a motor, the motor shaft of the motor is provided with a gear rod, the gear rod is meshed with the first double gear, the first double gear is meshed with the shaft gear, the The shaft gear is connected on the shaft body, and the shaft body is connected with the inner grinding wheel.

Further, the adjustment assembly includes a drive sleeve and a rotating member, the sleeve body is located in the drive sleeve, the inner wall of the drive sleeve is provided with internal threads, and the outer wall of the sleeve body is provided with external threads; the The edge of the drive sleeve is annularly provided with a rack edge; the rotating member is connected with a straight rod, the straight rod is connected with a gear, the gear is meshed with a second double gear, and the second double gear is connected with the The rack edges are meshed and connected; a cover cylinder is provided outside the drive sleeve, the cover cylinder is provided with a guide rod, a positioning hole is set on the lower surface of the sleeve body, and the guide rod is inserted into the positioning hole .

Further, the gap between the first coarse tooth region and the second coarse tooth region is larger than the gap between the first fine tooth region and the second fine tooth region.

Further, a cover body is provided outside the drive assembly, and the cover body is provided with a lower material level; a cover body is provided on the cover body, and the cover body is provided with a feed level, and the material feed level is provided inside the cover body. A protective plate is provided, and the protective plate extends to the lower material level.

Further, the unloading funnel is provided with a baffle plate, the baffle plate is connected with the opening and closing assembly, and the opening and closing assembly is provided with a diverting guide plate, and the diversion guide plate and the inner wall of the funnel body are preliminarily arranged. Leave blanking gaps.

Further, the opening and closing assembly includes a connecting rod and a knob switch, the lower end of the connecting rod is connected to the baffle plate, and the upper end of the connecting rod is connected to the knob switch; the diverting guide plate is connected to the on the connecting rod; the periphery of the diverting guide plate is formed with a downwardly inclined curved surface; the connecting part of the upper end of the connecting rod is set in a square shape, and the knob switch is correspondingly provided with a square mounting groove.

Further, an assembly cylinder is provided in the middle of the funnel body, and the connecting rod is located in the assembly cylinder; the funnel body is provided with a first opening, and the baffle plate is provided with a second opening. When the baffle plate overlaps the second opening with the first opening, the coffee beans in the funnel body will be discharged through the first opening and the second opening in sequence; a sealing cover is arranged above the funnel body.

Further, a plurality of protrusions are arranged longitudinally on the circumference of the rotating member, and friction lines are provided between adjacent protrusions.

Compared with the prior art, the beneficial effects of the present invention are:

In the present invention, the sleeve body is adjusted by the adjustment component, so that the position between the sleeve body and the inner grinding wheel changes, that is, the distance between the first grinding surface and the second grinding surface changes, so that the grinding thickness of the coffee beans can be adjusted. Adjustable, suitable for different drinking taste needs, with ingenious structure.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. In the accompanying drawings:

Figure 1 is a general view of a coffee grinder;

Fig. 2 is the structural representation of drive assembly;

Fig. 3 is the structural representation in the cover in the drive assembly;

FIG. 4 is a schematic view of the structure of FIG. 3 with the cover removed;

5 is a schematic structural diagram of a cover body;

6 is a schematic structural diagram of an adjustment assembly;

Fig. 7 is the structural representation of removing cover cylinder in Fig. 6;

Fig. 8 is the structural representation of cover cylinder;

Fig. 9 is the structural representation of sleeve body;

Figure 10 is a schematic structural diagram of a sleeve body, a grinding sleeve and an inner grinding wheel;

Figure 11 is a schematic structural diagram of a drive sleeve;

Fig. 12 is the structural representation of grinding sleeve and inner grinding wheel;

Figure 13 is a cross-sectional view of the grinding sleeve and the inner grinding wheel;

Fig. 14 is the structural representation of grinding sleeve;

Fig. 15 is the structural representation of inner grinding wheel;

Fig. 16 is the structural representation of unloading funnel;

Figure 17 is a schematic view of the structure of the unloading funnel from a lower perspective;

Figure 18 is a schematic diagram of the internal structure of the removal of the diverting guide plate in the unloading funnel;

Figure 19 is a schematic structural diagram of an opening and closing assembly;

FIG. 20 is a schematic diagram of the structure of the rotary switch.

In the picture: 1-Unloading funnel, 101-Baffle plate, 1011-Second opening, 102-Split guide plate, 103-Rod, 104-Knob switch, 1041-Square installation groove, 105-Assembly cylinder, 106-Section One opening, 107-sealing cover, 2-grinding mechanism, 201-body, 2011-external thread, 2012-positioning hole, 202-grinding sleeve, 2021-first coarse tooth area, 2022-first fine tooth area, 203 -Internal grinding wheel, 2031- Second coarse tooth area, 2032- Second fine tooth area, 204- Motor, 205- Gear rod, 206- First double gear, 207- Shaft gear, 208- Shaft body, 209- Drive Sleeve, 2091-internal thread, 2092-rack edge, 210-rotating piece, 211-straight rod, 212-gear, 213-second double gear, 214-cover cylinder, 2141-guide rod, 215-cover body, 2151-feeding level, 216-cover, 2161-feeding level, 2162-protection plate, 3-receiving funnel.

Detailed ways

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention.

As shown in FIGS. 1 to 10 , a bean grinding device for a coffee machine includes a feeding funnel 1 , a grinding mechanism 2 and a feeding funnel 3 that are connected in sequence. The grinding mechanism 2 includes a sleeve body 201 and an inner grinding wheel 202 . The grinding wheel 202 is rotated and located in the sleeve body 201, the inner wall of the sleeve body 201 is formed with a first grinding surface, the outer wall of the inner grinding wheel 202 is correspondingly formed with a second grinding surface, and a grinding space is formed between the first grinding surface and the second grinding surface. After the beans fall into the grinding space, they are ground under the interaction of the first grinding surface and the second grinding surface.

The inner grinding wheel 2 is connected with the driving component and rotates under the driving of the driving component, so that the first grinding surface and the second grinding surface move mutually; The size of the grinding space between the first grinding surface and the second grinding surface changes, so as to adjust the grinding thickness; in addition, by adjusting the distance between the first grinding surface and the second grinding surface, it is also conducive to the falling of the powder , to avoid blocking.

The receiving funnel 3 is located below the grinding mechanism 2 and is used to receive the ground powder.

The sleeve body 201 includes a grinding sleeve 202 located inside, the grinding sleeve 202 is fixed in the sleeve body 201, and the first grinding surface is located on the inner wall of the grinding sleeve 202; in conjunction with FIGS. 12 to 15, the first grinding surface is from the upper and lower ends. It gradually narrows to the middle, and the second grinding surface gradually expands from top to bottom, that is, the through hole surrounded by the middle of the first grinding surface in the grinding sleeve 202 is the smallest, and the through hole in the middle is named as the through hole A (for the convenience of later explanation). ), the purpose of this structure is that when the grinding sleeve 202 moves downward, the gap between the second grinding surface and the through hole A is small, and the ground coffee bean powder is finer; when the grinding sleeve 202 moves upward At this time, the gap between the second grinding surface and the through hole A is larger, and the ground coffee bean powder is coarser at this time.

The first grinding surface includes a first coarse tooth area 2021 and a first fine tooth area 2022 connected from top to bottom, the second grinding surface includes a second coarse tooth area 2031 and a second fine tooth area 2032 connected from top to bottom, After the inner grinding wheel 2 is assembled into the grinding sleeve 1, the first coarse tooth area 2021 corresponds to the second coarse tooth area 2031, the first fine tooth area 2022 corresponds to the second fine tooth area 2032, and the first coarse tooth area corresponds to the position of the first coarse tooth area 2032. The gap between the region 2021 and the second coarse tooth region 2031 is larger than the gap between the first fine tooth region 2022 and the second fine tooth region 2032. The purpose of this gap design is that the coffee beans first fall to the first coarse tooth region 2021 Grinding is performed between the second coarse tooth area 2031, and after preliminary grinding, it falls to between the first fine tooth area 2022 and the second fine tooth area 2032 for further fine grinding, so as to achieve a good grinding effect.

The drive assembly includes a motor 204, the motor shaft of the motor 204 is provided with a gear rod 205, the gear rod 205 is meshed with the first double gear 206, the first double gear 206 is meshed with the shaft gear 207, and the shaft gear 207 is connected to the shaft body. 208, the shaft body 208 is connected with the inner grinding wheel 203. It can be known from the above structure that when the motor 204 is started, the power will be transmitted to the inner wheel through the gear rod 205, the first double gear 206, the shaft gear 207 and the shaft body 208 in turn. In the grinding wheel 203, the inner grinding wheel 203 is rotated, that is, the first grinding surface and the second grinding surface are mutually moved to grind the coffee beans.

The adjustment assembly includes a drive sleeve 209 and a rotating member 210. The sleeve body 201 is located in the drive sleeve 209. The inner wall of the drive sleeve 209 is provided with an inner thread 2091, and the outer wall of the sleeve body 201 is provided with an outer thread 2011. The drive sleeve 209 and the sleeve body 201 are The inner thread 2091 and the outer thread 2011 are threadedly connected; the edge of the driving sleeve 209 is annularly provided with a rack edge 2091, the rotating member 210 is connected with the straight rod 211, the straight rod 211 is connected with the gear 212, and the gear 212 is connected with the The second double gear 213 is meshed and connected, and the second double gear 213 is meshed with the rack edge 2091. The purpose of the above structure is that the rotation of the hand-held rotating member 210 will drive the second double gear 213 to rotate, and the second double gear 213 is rotated. The interaction between the gear 213 and the rack edge 2091 causes the drive sleeve 209 to rotate; the drive sleeve 209 is provided with a cover cylinder 214, the cover cylinder 214 is provided with a guide rod 2141, and the lower surface of the sleeve body 201 is provided with a positioning hole 2012, After assembly, the guide rod 2141 is inserted into the positioning hole 2012, and the guide rod 2141 is inserted into the positioning hole 2012 upward. Following the rotation, since the driving sleeve 209 and the sleeve body 201 are threadedly connected between the inner thread 2091 and the outer thread 2011, the rotation of the driving sleeve 209 will cause the sleeve body 201 to move up and down, that is, the grinding sleeve 202 moves up and down, Finally, the grinding space between the first grinding surface and the second grinding surface is changed, which can adjust and grind coffee bean powder with different thicknesses.

A plurality of protrusions are arranged longitudinally on the circumference of the rotating member 210, and friction lines are arranged between adjacent protrusions. Both the protrusions and the friction lines help to increase the friction force with fingers and avoid slipping.

A cover body 215 is provided outside the drive assembly, the cover body 215 is provided with a lower material level 2151, a cover body 216 is provided on the cover body 215, the cover body 216 is fixed on the cover body 215 by screwing, and the cover body 216 is provided with The feeding position 2161 is provided with a protective plate 2162 in the feeding position 2161. The protective plate 2162 extends to the feeding position 2151; The material level 2151 falls to between the grinding sleeve 202 and the inner grinding wheel 203 for grinding; in conjunction with FIG. 2 to FIG. 5 , the protective plate 2162 extends to the lower material level 2151, which helps to guide the coffee beans to the lower material level 2151 on the one hand. On the other hand, the protective plate 2162 covers the shaft gear 207 and the shaft body 208 and other components to prevent coffee beans from falling into the components and affecting the use.

A baffle plate 101 is arranged under the funnel body 1, the baffle plate 101 is connected with the opening and closing assembly, and the opening and closing assembly controls the baffle plate 101 to rotate; the funnel body 1 is provided with a first opening 106, and the baffle plate 101 is provided with a second Two openings 1011, the first opening 106 matches the shape of the second opening 1011, after the coffee beans are poured into the funnel body 1, the baffle plate 101 is controlled to rotate by the opening and closing assembly, so that the second opening 1011 and the first opening 106 are overlapped. , the coffee beans in the funnel body 1 will be sequentially discharged through the first opening 106 and the second opening 1011 to the feeding position 2161 of the cover body 216 in the lower grinding component 2; The second opening 1011 is staggered from the first opening 106, so the baffle plate 101 will seal the first opening 106, and the coffee beans cannot be cut.

The opening and closing assembly includes a connecting rod 103 and a knob switch 104. The lower end of the connecting rod 103 is connected to the baffle plate 101, and the upper end of the connecting rod 103 is connected to the knob switch 104, so that the baffle plate can be controlled by holding the knob switch 104 and turning it. 101 is rotated, that is, the second opening 1011 is controlled to overlap or stagger from the first opening 106 .

The top of the funnel body 1 is provided with a sealing cover 107 to achieve a sealing effect. The opening and closing assembly is provided with a distribution guide plate 102, and a blanking gap is reserved between the distribution guide plate 102 and the inner wall of the funnel body 1, that is, the edge of the distribution guide plate 102 is not pressed against the inner wall of the funnel body 1 by a sealing cover, but there is a gap for coffee. 16 and 19, the surrounding of the distribution guide plate 102 forms a downwardly inclined curved surface. When the coffee beans are poured into the funnel body 1 after the sealing cover 107 is removed, the coffee beans will follow the distribution guide plate. The peripheries of 102 are diverted to the feeding gap and then flow into the bottom of the funnel body 1, so as not to accumulate in the middle of the funnel body 1 like a traditional bean grinder, which is conducive to the smooth pouring of coffee beans.

The diverter guide plate 102 is connected to the connecting rod 103, the upper end connecting part of the connecting rod 103 is set in a square shape, and the rotary switch 104 is correspondingly provided with a square mounting groove 1041,

The square mounting groove 1041 is clamped on the upper end of the connecting rod 103 in a square shape. The square shape helps to enhance the stability of the connection between the knob switch 104 and the connecting rod 103. The rotation of the knob switch 104 drives the rotation of the connecting rod 103. will not slip.

The middle of the funnel body 1 is provided with an assembly cylinder 105 , and the connecting rod 103 is located in the assembly cylinder 105 .

The working principle of the present invention is that after the coffee beans are poured into the feeding hopper 1, when the opening and closing assembly is opened, the coffee beans will fall through the first opening 106, the second opening 1011, the feeding position 2161, and the feeding position 2151. To grind between the grinding sleeve 202 and the inner grinding wheel 203, the driving component will drive the inner grinding wheel 203 to rotate, and the manual rotating member 210 can adjust the grinding sleeve 202 to rise or fall, and move with the inner grinding wheel 203 to adjust different thicknesses. The ground coffee bean powder will fall into the receiving funnel 3 for people to brew and drink.

Finally, it should be noted that the above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still The technical solutions recorded in each embodiment are modified, or some technical features thereof are equivalently replaced, but any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the present invention. within the scope of protection.

Claims (10)

1. A bean grinding device for a coffee machine, characterized in that it comprises a feeding funnel, a grinding mechanism and a feeding funnel that are connected in sequence; The grinding mechanism includes a sleeve body and an inner grinding wheel, the inner grinding wheel rotates and is located in the sleeve body, the inner wall of the sleeve body is formed with a first grinding surface; the outer wall of the inner grinding wheel is correspondingly formed with a second grinding surface, so A grinding space is formed between the first grinding surface and the second grinding surface; The inner grinding wheel is connected with the drive assembly, and the sleeve body is connected with the adjustment assembly; The receiving funnel is located below the grinding mechanism. 2. The bean grinding device for a coffee machine according to claim 1, wherein the sleeve body comprises a grinding sleeve located inside, and the first grinding surface is located on the inner wall of the grinding sleeve; the first grinding surface is located on the inner wall of the grinding sleeve; The first grinding surface gradually narrows from the upper and lower ends to the middle, and the second grinding surface gradually expands from the top to the bottom. 3. The bean grinding device for a coffee machine according to claim 2, wherein the first grinding surface comprises a first coarse tooth area and a first fine tooth area connected from top to bottom, the second grinding surface The surface includes a second coarse tooth area and a second fine tooth area connected from top to bottom; the first coarse tooth area corresponds to the position of the second coarse tooth area, and the first fine tooth area and the second The position of the fine tooth area corresponds. 4. A coffee machine grinding device according to claim 1, wherein the drive assembly comprises a motor, the motor shaft of the motor is provided with a gear rod, and the gear rod is connected to the first double gear In meshing connection, the first double gear is in meshing connection with the shaft gear, the shaft gear is connected on the shaft body, and the shaft body is connected with the inner grinding wheel. 5 . The bean grinding device for a coffee machine according to claim 1 , wherein the adjustment assembly comprises a drive sleeve and a rotating member, the sleeve body is located in the drive sleeve, and the inner wall of the drive sleeve is located in the drive sleeve. 6 . An inner thread is provided, the outer wall of the sleeve body is provided with an outer thread; the edge of the driving sleeve is annularly provided with a rack edge; the rotating part is connected with a straight rod, the straight rod is connected with a gear, and the gear It is meshed and connected with the second double gear, and the second double gear is meshed with the edge of the rack; the drive sleeve is provided with a cover cylinder, the cover cylinder is provided with a guide rod, and the lower part of the sleeve body is provided with a guide rod. The surface is provided with a positioning hole, and the guide rod is inserted into the positioning hole. 6 . The bean grinding device for a coffee machine according to claim 3 , wherein the gap between the first coarse tooth area and the second coarse tooth area is larger than the gap between the first fine tooth area and the first fine tooth area. 7 . the space between the second fine tooth regions. 7 . The bean grinding device for a coffee machine according to claim 4 , wherein a cover body is provided outside the drive assembly, the cover body is provided with a feeding level, and a cover is provided on the cover body. 8 . The cover body is provided with a feeding position, and a protective plate is disposed in the feeding position, and the protective plate extends to the feeding position. 8 . The bean grinding device of a coffee machine according to claim 1 , wherein the feeding hopper is provided with a baffle plate, and the baffle plate is connected with an opening and closing assembly, and the opening and closing The assembly is provided with a flow distribution guide plate, and a blanking gap is reserved between the flow distribution guide plate and the inner wall of the funnel body. 9 . The bean grinding device for a coffee machine according to claim 8 , wherein the opening and closing assembly comprises a connecting rod and a knob switch, the lower end of the connecting rod is connected to the baffle plate, and the The upper end of the connecting rod is connected with the knob switch; the diverting guide plate is connected to the connecting rod; the periphery of the diverting guide plate forms a downwardly inclined curved surface; the connecting part of the upper end of the connecting rod is set in a square shape, and the knob The switch is correspondingly provided with a square mounting slot. 10 . The bean grinding device for a coffee machine according to claim 9 , wherein an assembly cylinder is provided in the middle of the funnel body, and the connecting rod is located in the assembly cylinder; the funnel body is provided with an assembly cylinder. 11 . a first opening, the baffle plate is provided with a second opening, when the baffle plate is rotated to make the second opening overlap the first opening, the coffee beans in the funnel body will pass through the first opening and the second opening in sequence The opening is used to discharge; the upper part of the funnel body is provided with a sealing cover.

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