WO2017045449A1 - 一种咖啡机磨豆系统 - Google Patents

一种咖啡机磨豆系统 Download PDF

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Publication number
WO2017045449A1
WO2017045449A1 PCT/CN2016/085708 CN2016085708W WO2017045449A1 WO 2017045449 A1 WO2017045449 A1 WO 2017045449A1 CN 2016085708 W CN2016085708 W CN 2016085708W WO 2017045449 A1 WO2017045449 A1 WO 2017045449A1
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WIPO (PCT)
Prior art keywords
transmission joint
output shaft
coffee
grinder system
hole
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PCT/CN2016/085708
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English (en)
French (fr)
Inventor
郭建刚
文灵丹
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广东新宝电器股份有限公司
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Application filed by 广东新宝电器股份有限公司 filed Critical 广东新宝电器股份有限公司
Priority to US15/755,867 priority Critical patent/US10791875B2/en
Priority to AU2016322559A priority patent/AU2016322559B2/en
Priority to DE112016003092.4T priority patent/DE112016003092T5/de
Publication of WO2017045449A1 publication Critical patent/WO2017045449A1/zh

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J42/00—Coffee mills; Spice mills
    • A47J42/38—Parts or details
    • A47J42/46—Driving mechanisms; Coupling to drives
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/42—Beverage-making apparatus with incorporated grinding or roasting means for coffee
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J42/00—Coffee mills; Spice mills
    • A47J42/02—Coffee mills; Spice mills having grinding cones
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J42/00—Coffee mills; Spice mills
    • A47J42/38—Parts or details

Definitions

  • the present invention relates to a coffee machine, and more particularly to a coffee machine grinder system.
  • the coffee processing process generally includes the following three steps: step one, grinding the coffee beans into coffee powder; step two, loading the coffee powder into the coffee box; and step three, squeezing the coffee powder in the coffee box.
  • step one grinding the coffee beans into coffee powder
  • step two loading the coffee powder into the coffee box
  • step three squeezing the coffee powder in the coffee box.
  • coffee powder is susceptible to oxidation and fragrance, so a grinder for automatic grinding of coffee beans for ordinary consumers has emerged.
  • Chinese patent CN103271655A discloses a grinder system for a fully automatic coffee machine.
  • the patented grinder system includes a motor, a helical gear, a lower tool holder, a lower tool, and an upper tool.
  • the output of the motor is provided with a gear that meshes with the helical gear.
  • the middle shaft of the helical gear is engaged with the lower tool holder, the lower tool is fixedly disposed on the lower tool holder, and the upper tool is fixedly disposed on the upper tool holder.
  • the lower tool and the upper tool are coaxially set.
  • the system realizes the function of centrifugal automatic grinding of coffee powder, but there are deficiencies: the upper cutter and the lower cutter are coaxially arranged.
  • the lower tool is fixedly disposed on the lower tool holder, and the lower tool holder is fixedly coupled to the center shaft of the helical gear.
  • the helical gear, the lower tool holder, the lower tool, and the upper tool need to be coaxially set at the same time.
  • the lower tool holder and the lower tool when the axis of the helical gear is different from the axis of the upper sharpening, the axis of the lower sharpening and the axis of the upper sharpening are not coaxial.
  • the helical gear is integrated with the lower sharpening knife.
  • the upper sharpening knife and the lower sharpening knife have different axes, so that the thickness of the ground coffee powder is not uniform. Affects the taste of the coffee brewed by the user using the coffee powder.
  • the technical problem to be solved by the present invention is to overcome the integral structure between the helical gear and the lower sharpening knife in the prior art.
  • the upper sharpening knife and the lower sharpening knife are different. Insufficient axis.
  • the present invention provides a coffee machine grinding system, comprising: a grinding bean box, including a bottom a lower sharpening assembly disposed within the grinding bean box, including a transmission joint disposed on the bottom wall; a gearbox including an output shaft drivingly coupled to the transmission joint, the transmission joint and the output shaft Active connection.
  • a coffee machine grinder system includes a gearbox and a lower sharpener assembly in a separate configuration. During the assembly of the gearbox and the lower sharpener assembly, there is no need to ensure that the axis of the output shaft completely coincides with the axis of the drive joint.
  • the output shaft and the transmission joint are connected by means of plugging. When the axis of the output shaft is different from the axis of the transmission joint, the output shaft does not affect the coaxiality between the transmission joint, the lower sharpening knife and the upper sharpening knife.
  • the transmission joint includes a shaft bore, and the output shaft is plugged into the shaft bore.
  • the output shaft and the shaft hole are assembled by means of a plug connection, and the installation process is quick and easy to operate.
  • the outer peripheral surface of the output shaft is provided with a protrusion extending axially along the output shaft, and the hole wall of the shaft hole is provided with a groove that cooperates with the protrusion.
  • the bottom wall is provided with a bearing that is sleeved on an outer peripheral surface of the transmission joint.
  • the bearing forms a support for the transmission joint to ensure the smoothness of the transmission joint when it is rotated.
  • the bottom wall is provided with a pressure ring for pressing the bearing.
  • the pressure ring is fixedly connected to the bottom wall to press the bearing to form a limit on the bearing to prevent the bearing from coming off the bearing housing.
  • the top of the transmission joint is provided with a plug block
  • the lower sharpener assembly further includes a doctor blade, the wiper blade being provided with a mating slot that cooperates with the plug block.
  • the lower sharpening assembly further includes a screw head, the screw head and the transmission joint are respectively disposed on two sides of the powder scraping sheet, the spiral head includes a threaded hole, and the scraping blade comprises a first central bore disposed coaxially with the threaded bore, the drive joint further including a second central bore coaxial with the first central bore.
  • the helical head further includes a die orifice disposed coaxially with the threaded bore and a barrier for spacing the die orifice and the threaded bore.
  • the barrier prevents the coffee beans from entering the threaded holes and also shields the screws to ensure aesthetics at the screw head.
  • a rubber plug is disposed in the die hole.
  • a rubber plug is arranged in the die hole to block the die hole, thereby preventing coffee beans smaller than the diameter of the die hole from entering the die hole and causing residual coffee beans, thereby ensuring that the grinder system is kept clean during long-term use.
  • the lower sharpener assembly further includes a lower sharpener disposed between the spiral head and the powder scraping sheet, and a connecting pin is disposed between the lower sharpening blade and the scraping powder sheet. After the connecting pin is installed in the pin hole, the lower sharpening blade is connected with the scraping powder piece, so that the lower sharpening blade and the scraping powder piece can be synchronously moved, and the lower sharpening blade and the scraping powder piece are assembled conveniently.
  • FIG. 1 is a schematic exploded view of a coffee grinder system of an embodiment of the present invention.
  • FIG. 2 is a schematic view showing the structure of an assembled product of a coffee grinder system according to an embodiment of the present invention.
  • FIG 3 is a schematic view showing the structure of a transmission joint according to an embodiment of the present invention.
  • Fig. 4 is a schematic view showing the structure of a doctor blade according to an embodiment of the present invention.
  • Fig. 5 is a schematic structural view of an upper planetary gear set according to an embodiment of the present invention.
  • Figure 6 is a schematic cross-sectional view of a coffee machine grinder system in accordance with an embodiment of the present invention.
  • the coffee grinder system 10 of the embodiment of the present invention comprises a grinder box 22, an upper sharpening assembly matched with the grinder box 22, and a lower grinding machine disposed inside the grind box 22. Knife assembly, gearbox and motor 29.
  • the grinder box 22 includes a bottom wall and side walls. As shown in Fig. 6, a bearing block is provided on the bottom wall. An opening is provided at the bottom of the bearing housing. A bearing 21 is connected to the inner seat of the bearing housing. A pressure ring 20 is provided on the outer side of the bearing 21. The pressure ring 20 is fixedly coupled to the bottom wall by screws to press the bearing 21 to form a limit on the bearing 21 to prevent the bearing 21 from being detached from the bearing housing.
  • the lower sharpening assembly includes a transmission joint 23 connected to the bearing 21, a doctor blade 18, a lower sharpener 16, and a screw head 15.
  • the drive joint 23 passes through the opening in the bottom of the bearing housing and is inserted into the inner ring of the bearing 21.
  • the transmission joint 23 includes a first stepped shaft 231 and a second stepped shaft 232.
  • the second stepped shaft 232 cooperates with the inner ring of the bearing 21.
  • the transmission joint 23 includes a plug block 233 extending from the stepped surface between the first stepped shaft 231 and the second stepped shaft 232 in the axial direction of the first stepped shaft 231.
  • three plug blocks 233 are uniformly disposed around the axis of the first stepped shaft 231.
  • An annular flange 234 is provided on the outer peripheral surface of the end of the second stepped shaft 232.
  • the bearing 21 is sleeved on the outer peripheral surface of the second stepped shaft 232 of the transmission joint 23.
  • the rim of the annular flange 234 is pressed against the inner ring of the bearing 21 to prevent the transmission joint 23 from moving axially along the bearing 21.
  • the squeegee blade 18 includes stepped holes that cooperate with the first stepped shaft 231 and the second stepped shaft 232. As shown in FIG. 4, the surface of the wiper blade 18 facing the side of the transmission joint 23 is provided with a fitting groove 181 corresponding to the insertion block 233.
  • the plug block 233 of the drive joint 23 is inserted into the insert groove 181 of the wiper blade 18 to effect the connection of the drive joint 23 to the wiper blade 18, so that the drive joint 23 It can move synchronously with the wiper blade 18.
  • the end face of the wiper blade 18 facing the transmission joint 23 is pressed against the inner ring of the bearing 21 to further limit the bearing 21.
  • a wool ring 19 is disposed between the wiper blade 18 and the bottom wall of the grinder box 22. The wool loop 19 fills the gap between the wiper blade 18 and the bottom wall of the grinder 22 to prevent coffee powder from entering the gap.
  • a projection is provided on the surface of the wiper blade 18 facing away from the transmission joint 23.
  • the lower sharpener 16 includes a central bore that mates with the stud such that the lower sharpener 16 is sleeved onto the stud of the wiper blade 18 to form a location.
  • the lower sharpener 16 and the drive joint 23 are respectively disposed on both sides of the wiper blade 18.
  • Pin holes are provided on the surfaces of the lower sharpening blade 16 and the doctor blade 18 opposite to each other. After the connecting pin 17 is installed in the pin hole, the lower sharpening blade 16 is connected to the powder removing blade 18, so that the lower sharpening blade 16 and the scraping blade 18 can move in synchronization.
  • the screw head 15 includes an insertion section that is inserted into the center hole of the lower sharpening blade 16 and a pressing section that is pressed against the end surface of the lower sharpening blade 16.
  • the top of the stud of the wiper blade 18 is provided with a card slot.
  • Top of the insertion section of the screw head 15 The portion is provided with a snap portion that is engaged with the card slot, so that the screw head 15 and the wiper blade 18 are synchronously moved by the snap connection.
  • the insertion section is provided with a threaded hole 151 facing the boss of the wiper blade 18.
  • the pressing section is provided with a die hole 152 coaxial with the threaded hole 151.
  • a blocking portion 153 (shown in FIG. 6) for separating the die hole 152 and the screw hole 151 is provided between the die hole 152 and the screw hole 151.
  • the blocking portion 153 can prevent the coffee beans from entering the threaded hole 151 while also shielding the screw to ensure the aesthetics at the screw head 15.
  • a rubber plug 99 shown in FIGS.
  • the doctor blade 18 is provided with a first center hole 182 which is opposite to and coaxial with the threaded hole 151 of the screw head 15.
  • the transmission joint 23 is provided with a second central hole 235 coaxial with the first central hole 182.
  • the screw 24 can tighten the transmission joint 23 and the screw head 15, so that the transmission joint 23 and the spiral The head 15 collectively clamps the lower sharpener 16 and the wiper blade 18 to complete the assembly of the lower sharpener assembly.
  • the transmission joint 23, the wiper blade 18, the lower sharpening blade 16, and the screw head 15 are capable of synchronous movement and maintaining the stability of the relative positions of the members during movement.
  • the upper sharpening assembly includes an upper sharpener 11 disposed coaxially with the lower sharpener 16, a cutter bracket 13 supporting the upper sharpener 11, a fixture 98 for pressing the upper sharpener 11 against the cutter bracket 13, and a bearing
  • the adjustment wheel 14 of the tool holder 13 and the adjustment wheel cover 12 cooperate with the adjustment wheel 14. When the adjustment wheel 14 is rotated, the adjustment wheel 14 can be moved to adjust the position of the tool holder 13.
  • the cutter holder 13 drives the upper sharpener 11 to move to adjust the distance between the upper sharpener 11 and the lower sharpener 16, so that the grinder system can grind the coffee powder with different particle sizes.
  • the gearbox includes a gearbox 28, a lower planetary gear set 27 disposed within the gearbox 28, and an upper planetary gear set 26 coupled to the lower planetary gear set 27.
  • Spacers 25 are provided on the outer sides of the bottom and lower planetary gear sets 27, the lower planetary gear set 27 and the upper planetary gear set 26, and the upper planetary gear set 26 of the gear case 28, respectively.
  • the motor 29 is drivingly coupled to the lower planetary gear set 27 to input power to the gearbox.
  • the output shaft 261 of the upper planetary gear set 26 is the output shaft of the gearbox.
  • the output shaft of the gearbox is drivingly coupled to the transmission joint 23, thereby finally transferring the power of the motor 29 through the transmission joint 23 to the lower sharpener 16 to drive the lower sharpener 16 turns. move.
  • the drive joint 23 is provided with a shaft bore for receiving an output shaft 261 (shown in Figure 5) of the upper planetary gear set 26.
  • the outer peripheral surface of the output shaft 261 is provided with a projection 262 (shown in FIG. 5) extending in the axial direction of the output shaft 261.
  • the hole wall of the shaft hole is provided with a groove that cooperates with the protrusion 262 and extends in the axial direction of the shaft hole.
  • the output shaft 261 is capable of driving the transmission joint 23 to rotate synchronously, so that the output shaft 261 can synchronously drive the lower sharpener 16 to rotate through the transmission joint 23.
  • the rotating lower sharpener 16 cooperates with the stationary upper sharpener 11 to grind the coffee beans.
  • the output shaft 261 is splined with the shaft hole to improve the connection stability of the output shaft 261 and the transmission joint 23, and further ensure the stability of the power transmission process of the output shaft 261 and the transmission joint 23.
  • a bump is disposed on an end surface of the output shaft 261, and a bottom wall of the shaft hole is provided with a groove that cooperates with the bump.
  • the gear box and the lower sharpening assembly are separated structures, and assembled after being assembled.
  • the drive joint 23 and the lower sharpener 16 are coaxially disposed.
  • the upper sharpening blade 11 and the lower sharpening blade 16 are coaxially disposed to ensure the equal spacing between the upper sharpener 11 and the lower sharpener 16.
  • the output shaft 261 is directly inserted into the transmission joint 23 and the gear box 28 is fixed to the grinder box 22.
  • the gearbox and the lower sharpener assembly are of a separate structure, there is no need to ensure that the axis of the output shaft 261 completely coincides with the axis of the transmission joint 23 during assembly of the gearbox and the lower sharpener assembly.
  • the output shaft 261 and the transmission joint 23 are connected by means of plugging. When the axis of the output shaft 261 is different from the axis of the transmission joint 23, the output shaft 261 does not affect the transmission joint 23, the lower sharpener 16 and the upper portion.
  • the coaxiality between the sharpening blades 11 reduces the assembly accuracy requirement between the output shaft 261 and the lower sharpening assembly, and also effectively avoids the assembly error between the output shaft 261 and the transmission joint 23 at the lower sharpener 16
  • the accumulation ensures that the distance between the upper sharpener 11 and the lower sharpener 16 does not change due to the assembly error between the output shaft 261 and the transmission joint 23, thereby ensuring that the upper sharpener 11 and the lower sharpener 16 are ground to a thickness. Even coffee powder.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Apparatus For Making Beverages (AREA)
  • Tea And Coffee (AREA)
  • Crushing And Grinding (AREA)
  • Food-Manufacturing Devices (AREA)

Abstract

一种咖啡机磨豆系统（10），包括：磨豆盒（22），包括底壁；下磨刀组件，设置在所述磨豆盒内，包括设置在所述底壁上的传动接头（23）；齿轮箱，包括与所述传动接头驱动连接的输出轴（261），所述传动接头与输出轴活动连接。该咖啡机磨豆系统的齿轮箱与下磨刀组件为分离式结构。输出轴与传动接头通过插接的方式实现传动连接，当输出轴的轴线与传动接头的轴线不同轴时，输出轴不会影响传动接头、下磨刀（16）以及上磨刀（11）之间的同轴度，从而有效地避免输出轴与传动接头之间的装配误差在下磨刀处的积累，保证上磨刀与下磨刀之间的间距不会因为输出轴与传动接头之间的装配误差而发生变化。

Description

一种咖啡机磨豆系统 技术领域
本发明涉及咖啡机，特别是涉及一种咖啡机磨豆系统。
背景技术
随着社会的发展，人们生活水平和生活品位的提高，咖啡已经成为一种时尚饮料，并广受消费者青睐。咖啡加工过程通常包括以下三个步骤：步骤一，将咖啡豆研磨成咖啡粉；步骤二，将咖啡粉装入咖啡盒；步骤三，在咖啡盒内挤压咖啡粉。在常规条件下，咖啡粉易受到氧化而散发香味，因此适用于普通消费者的自动研磨咖啡豆的磨豆机应运而生。
中国专利CN103271655A公开了一种全自动咖啡机的磨豆系统。该专利的磨豆系统包括电机、斜齿轮、下刀具支架、下刀具和上刀具。电机的输出端设置有与斜齿轮啮合的齿轮。斜齿轮的中轴与下刀具架卡接，下刀具固定设置在下刀具架上，上刀具固定设置在上刀具架上。下刀具和上刀具同轴设置。
该系统实现了离心式自动研磨咖啡粉的功能，但存在不足之处：上刀具与下刀具同轴设置。下刀具固定设置在下刀具架上，而下刀具架与斜齿轮的中轴卡接固定连接。斜齿轮、下刀具架、下刀具以及上刀具需要同时保持同轴设置。然而，在组装斜齿轮、下刀具架以及下刀具过程中，当斜齿轮的轴线与上磨刀的轴线不同轴时，会导致下磨刀的轴线与上磨刀的轴线也不同轴。斜齿轮与下磨刀之间是一体结构，当各构件在制造或装配过程中存在误差时，会导致上磨刀与下磨刀不同轴，从而使得研磨出的咖啡粉粗细程度不均匀，影响用户使用该咖啡粉酿造出的咖啡的口感。
发明内容
本发明所要解决的技术问题是为了克服现有技术中斜齿轮与下磨刀之间是一体结构，当各构件在制造或装配过程中存在误差时，会导致上磨刀与下磨刀不同轴的不足。
针对上述问题，本发明提出了一种咖啡机磨豆系统，包括：磨豆盒，包括底 壁；下磨刀组件，设置在所述磨豆盒内，包括设置在所述底壁上的传动接头；齿轮箱，包括与所述传动接头驱动连接的输出轴，所述传动接头与输出轴活动连接。
根据本发明的咖啡机磨豆系统，其包括的齿轮箱与下磨刀组件为分离式结构。在组装齿轮箱与下磨刀组件过程中，不需要保证输出轴的轴线与传动接头的轴线完全重合。输出轴与传动接头通过插接的方式实现传动连接，当输出轴的轴线与传动接头的轴线不同轴时，输出轴也不会影响传动接头、下磨刀以及上磨刀之间的同轴度，从而降低了输出轴与下磨刀组件之间的装配精度要求，同时也有效地避免输出轴与传动接头之间的装配误差在下磨刀处的积累，保证上磨刀与下磨刀之间的间距不会因为输出轴与传动接头之间的装配误差而发生变化，从而保证上磨刀与下磨刀研磨出粗细均匀的咖啡粉。
在一个实施例中，所述传动接头包括轴孔，所述输出轴与所述轴孔插接连接。输出轴与轴孔通过插接连接的连接方式进行组装，安装过程快捷，操作方便。
在一个实施例中，所述输出轴的外周面上设置有沿所述输出轴轴向延伸的凸起，所述轴孔的孔壁设置有与所述凸起相配合的凹槽。在将齿轮箱与下磨刀组件的传动接头进行组装时，只需将输出轴插入到传动接头的轴孔内以使得凸起与凹槽相配合，组装过程方便快捷且保证输出轴与传动接头的连接稳定性。
在一个实施例中，所述底壁设置有轴承，所述轴承套设在所述传动接头的外周面上。轴承对传动接头形成支撑，保证传动接头转动时的平稳性。
在一个实施例中，所述底壁设置有用于抵压所述轴承的压环。压环与底壁固定连接以压紧轴承，对轴承形成限位，防止轴承从轴承座中脱离出去。
在一个实施例中，所述传动接头的顶部设置有插接块，所述下磨刀组件还包括刮粉片，所述刮粉片设置有与所述插接块相配合的插合槽。刮粉片套接到传动接头上时，传动接头的插接块插入到刮粉片的插合槽中以实现传动接头与刮粉片的连接，从而传动接头与刮粉片能够同步运动。
在一个实施例中，所述下磨刀组件还包括螺旋头，所述螺旋头与传动接头分别设置在所述刮粉片的两侧，所述螺旋头包括螺纹孔，所述刮粉片包括与所述螺纹孔同轴设置的第一中心孔，所述传动接头还包括与所述第一中心孔同轴的第二中心孔。使用螺钉依次穿过第二中心孔和第一中心孔并拧入螺纹孔后，螺钉能够拉紧传动接头以及螺旋头，从而传动接头与螺旋头共同夹紧下磨刀和刮粉片，完 成下磨刀组件的组装。这样，传动接头、刮粉片、下磨刀以及螺旋头能够同步运动并保持运动过程中的各构件彼此之间相对位置的稳定性。
在一个实施例中，所述螺旋头还包括与所述螺纹孔同轴设置的出模孔以及用于隔开所述出模孔和螺纹孔的隔挡部。隔挡部能够防止咖啡豆进入到螺纹孔，同时也将螺钉遮挡起来以保证螺旋头处的美观性。
在一个实施例中，所述出模孔内设置有胶塞。在出模孔中设置胶塞以将出模孔堵住，从而避免小于出模孔直径的咖啡豆进入出模孔而造成咖啡豆残留，保证磨豆系统在长期使用过程中保持清洁卫生。
在一个实施例中，所述下磨刀组件还包括设置在所述螺旋头与刮粉片之间的下磨刀，所述下磨刀与刮粉片之间设置有连接销。在销孔中安装连接销后，下磨刀与刮粉片相连接，从而下磨刀与刮粉片能够同步运动，方便对下磨刀与刮粉片进行组装。
附图说明
在下文中将基于实施例并参考附图来对本发明进行更详细的描述。
图1是本发明实施例的咖啡机磨豆系统的分解结构示意图。
图2是本发明实施例的咖啡机磨豆系统的组装产品结构示意图。
图3是本发明实施例的传动接头结构示意图。
图4是本发明实施例的刮粉片的结构示意图。
图5是本发明实施例的上行星齿轮组的结构示意图。
图6是本发明的实施例的咖啡机磨豆系统的全剖视示意图。
在附图中，相同的部件使用相同的附图标记。附图并未按照实际的比例绘制。
具体实施方式
下面将结合附图对本发明作进一步说明。
如图1、图2所示，本发明实施例的咖啡机磨豆系统10，包括磨豆盒22、与磨豆盒22相配合的上磨刀组件、设置在磨豆盒22内部的下磨刀组件、齿轮箱以及电机29。
磨豆盒22包括底壁和侧壁。如图6所示，底壁上设置有轴承座。轴承座的底部设置有开口。轴承座内座接有轴承21。轴承21的外侧设置有压环20。压环20通过螺钉与底壁固定连接以压紧轴承21，对轴承21形成限位，防止轴承21从轴承座中脱离出去。
如图1、图6所示，下磨刀组件包括与轴承21相连接的传动接头23、刮粉片18、下磨刀16以及螺旋头15。
传动接头23穿过轴承座的底部的开口并插入到轴承21内圈。本发明实施例中，如图3所示，传动接头23包括第一阶梯轴231以及第二阶梯轴232。第二阶梯轴232与轴承21内圈相配合。传动接头23包括从第一阶梯轴231与第二阶梯轴232之间的台阶面上沿第一阶梯轴231的轴向延伸的插接块233。优选地，围绕第一阶梯轴231的轴线均匀设置三个插接块233。第二阶梯轴232的端部的外周面上设置有环形凸缘234。轴承21套设在传动接头23的第二阶梯轴232的外周面上。环形凸缘234的边沿抵压在轴承21的内圈上，防止传动接头23沿轴承21轴向移动。
刮粉片18包括与第一阶梯轴231和第二阶梯轴232相配合的阶梯孔。如图4所示，刮粉片18朝向传动接头23的一侧的表面上设置有与插接块233相对应的插合槽181。刮粉片18套接到传动接头23上时，传动接头23的插接块233插入到刮粉片18的插合槽181中以实现传动接头23与刮粉片18的连接，从而传动接头23与刮粉片18能够同步运动。刮粉片18的朝向传动接头23的端面抵压在轴承21的内圈上，进一步地对轴承21形成限位。刮粉片18与磨豆盒22的底壁之间设置有羊毛圈19。羊毛圈19填充刮粉片18与磨豆盒22的底壁之间的间隙，避免咖啡粉进入该间隙。
刮粉片18的背向传动接头23的表面上设置有凸柱。下磨刀16包括与凸柱相配合的中心孔，从而下磨刀16套接到刮粉片18的凸柱上以形成定位。下磨刀16与传动接头23分别设置在刮粉片18的两侧。下磨刀16与刮粉片18彼此相对的表面上均设置有销孔。在销孔中安装连接销17后，下磨刀16与刮粉片18相连接，从而下磨刀16与刮粉片18能够同步运动。
螺旋头15包括插入到下磨刀16的中心孔内的插入段以及抵压在下磨刀16的端面的压紧段。刮粉片18的凸柱的顶部设置有卡槽。螺旋头15的插入段的顶 部设置有与卡槽相卡接的卡接部，从而螺旋头15与刮粉片18通过卡接的连接方式实现同步运动。
如图6所示，插入段设置有朝向刮粉片18凸柱的螺纹孔151。压紧段设置有与螺纹孔151同轴的出模孔152。优选地，出模孔152与螺纹孔151之间设置有用于隔开出模孔152和螺纹孔151的隔挡部153(如图6所示)。隔挡部153能够防止咖啡豆进入到螺纹孔151，同时也将螺钉遮挡起来以保证螺旋头15处的美观性。进一步地，在出模孔152中设置胶塞99(如图2、图6所示)以将出模孔152堵住，从而避免小于出模孔152直径的咖啡豆进入出模孔152而造成咖啡豆残留，保证磨豆系统在长期使用过程中保持清洁卫生。
如图4所示，刮粉片18上设置有与螺旋头15的螺纹孔151相对且同轴的第一中心孔182。如图3所示，传动接头23上设置有与第一中心孔182同轴的第二中心孔235。如图6所示，将螺钉24依次穿过第二中心孔235和第一中心孔182并拧入螺纹孔151后，螺钉24能够拉紧传动接头23以及螺旋头15，从而传动接头23与螺旋头15共同夹紧下磨刀16和刮粉片18，完成下磨刀组件的组装。这样，传动接头23、刮粉片18、下磨刀16以及螺旋头15能够同步运动并保持运动过程中的各构件彼此之间相对位置的稳定性。
上磨刀组件包括与下磨刀16同轴设置的上磨刀11、承托上磨刀11的刀具支架13、用于将上磨刀11压紧在刀具支架13上的固定件98、承托刀具支架13的调节轮14以及与调节轮14相配合的调节轮盖12。转动调节轮14时，调节轮14能够移动以调节刀具支架13的位置。刀具支架13带动上磨刀11移动以调节上磨刀11与下磨刀16之间的间距大小，从而磨豆系统能够研磨出颗粒尺寸不同的咖啡粉。上磨刀11与下磨刀16的同轴度越高，磨豆系统研磨出的咖啡粉的颗粒尺寸大小越均匀，使用该粗细均匀的咖啡粉酿造出的咖啡口感好，颗粒均匀的咖啡粉更具美观性。
齿轮箱包括齿轮盒28、设置在齿轮盒28内部的下行星齿轮组27、与下行星齿轮组27传动连接的上行星齿轮组26。在齿轮盒28底部和下行星齿轮组27、下行星齿轮组27和上行星齿轮组26以及上行星齿轮组26的外侧分别设置有垫片25。电机29与下行星齿轮组27驱动连接以向齿轮箱输入动力。上行星齿轮组26的输出轴261为齿轮箱的输出轴。齿轮箱的输出轴与传动接头23驱动连接，从而将电机29的动力通过传动接头23最终传递至下磨刀16以带动下磨刀16转 动。
传动接头23设置有用于容纳上行星齿轮组26的输出轴261(如图5所示)的轴孔。输出轴261的外周面上设置有沿输出轴261的轴向延伸的凸起262(如图5所示)。轴孔的孔壁上设置有与该凸起262相配合并沿轴孔的轴向延伸的凹槽。在将齿轮箱与下磨刀组件的传动接头23进行组装时，只需将输出轴261插入到传动接头23的轴孔内以使得凸起262与凹槽相配合，组装过程方便快捷且保证输出轴与传动接头23的连接稳定性。输出轴261能够驱动传动接头23同步转动，从而输出轴261能够通过传动接头23同步驱动下磨刀16转动。转动的下磨刀16与静止的上磨刀11共同对咖啡豆进行研磨。
优选地，输出轴261与轴孔为花键配合，提升输出轴261与传动接头23的连接稳定性，进一步保证输出轴261与传动接头23动力传递过程的稳定性。
可选地，输出轴261的端面上设置有凸块，轴孔的底壁上设置与该凸块相配合的槽。输出轴261插入到轴孔后，凸块插入到槽中以实现输出轴261与传动接头23的驱动连接。
本发明实施例的咖啡机磨豆系统10，齿轮箱与下磨刀组件之间为分离式结构，完成各自组装后再将彼此进行组装。首先，在组装下磨刀组件时，传动接头23与下磨刀16之间同轴设置。然后，在安装上磨刀组件时，上磨刀11与下磨刀16之间同轴设置以保证上磨刀11与下磨刀16之间的间距相等。最后，将输出轴261直接插入传动接头23并将齿轮盒28与磨豆盒22进行固定。
由于齿轮箱与下磨刀组件为分离式结构，在组装齿轮箱与下磨刀组件过程中，不需要保证输出轴261的轴线与传动接头23的轴线完全重合。输出轴261与传动接头23通过插接的方式实现传动连接，当输出轴261的轴线与传动接头23的轴线不同轴时，输出轴261也不会影响传动接头23、下磨刀16以及上磨刀11之间的同轴度，从而降低了输出轴261与下磨刀组件之间的装配精度要求，同时也有效地避免输出轴261与传动接头23之间的装配误差在下磨刀16处的积累，保证上磨刀11与下磨刀16之间的间距不会因为输出轴261与传动接头23之间的装配误差而发生变化，从而保证上磨刀11与下磨刀16研磨出粗细均匀的咖啡粉。
虽然已经参考优选实施例对本发明进行了描述，但在不脱离本发明的范围的 情况下，可以对其进行各种改进并且可以用等效物替换其中的部件。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本发明并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (10)

  1. 一种咖啡机磨豆系统，包括：
    磨豆盒，包括底壁；
    下磨刀组件，设置在所述磨豆盒内，包括设置在所述底壁上的传动接头；
    齿轮箱，包括与所述传动接头驱动连接的输出轴，所述传动接头与输出轴活动连接。
  2. 根据权利要求1所述的咖啡机磨豆系统，其特征在于，所述传动接头包括轴孔，所述输出轴与所述轴孔插接连接。
  3. 根据权利要求2所述的咖啡机磨豆系统，其特征在于，所述输出轴的外周面上设置有沿所述输出轴轴向延伸的凸起，所述轴孔的孔壁设置有与所述凸起相配合的凹槽。
  4. 根据权利要求1所述的咖啡机磨豆系统，其特征在于，所述底壁设置有轴承，所述轴承套设在所述传动接头的外周面上。
  5. 根据权利要求4所述的咖啡机磨豆系统，其特征在于，所述底壁设置有用于抵压所述轴承的压环。
  6. 根据权利要求1所述的咖啡机磨豆系统，其特征在于，所述传动接头的顶部设置有插接块，所述下磨刀组件还包括刮粉片，所述刮粉片设置有与所述插接块相配合的插合槽。
  7. 根据权利要求6所述的咖啡机磨豆系统，其特征在于，所述下磨刀组件还包括螺旋头，所述螺旋头与传动接头分别设置在所述刮粉片的两侧，所述螺旋头包括螺纹孔，所述刮粉片包括与所述螺纹孔同轴设置的第一中心孔，所述传动接头还包括与所述第一中心孔同轴的第二中心孔。
  8. 根据权利要求7所述的咖啡机磨豆系统，其特征在于，所述螺旋头还包括与所述螺纹孔同轴设置的出模孔以及用于隔开所述出模孔和螺纹孔的隔挡部。
  9. 根据权利要求8所述的咖啡机磨豆系统，其特征在于，所述出模孔内设 置有胶塞。
  10. 根据权利要求7所述的咖啡机磨豆系统，其特征在于，所述下磨刀组件还包括设置在所述螺旋头与刮粉片之间的下磨刀，所述下磨刀与刮粉片之间设置有连接销。
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CN204931358U (zh) * 2015-09-15 2016-01-06 广东新宝电器股份有限公司 一种咖啡机磨豆系统

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US11389029B2 (en) * 2018-06-14 2022-07-19 Jura Elektroapparate Ag Grinding device for grinding coffee beans

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CN105167615A (zh) 2015-12-23
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AU2016322559B2 (en) 2019-01-31

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