Coffee grinding device with anti-moving function

Abstract

The utility model discloses a coffee grinding device with an anti-moving function. The coffee grinding device comprises a shell, wherein the shell is provided with a grinding cavity, a powder collecting cavity, a powder outlet channel, a first bearing positioning groove and a second bearing positioning groove; the grinding assembly is arranged in the grinding cavity; the powder scraping knife is connected with the bean grinding knife core; the upper end of the output shaft is fixedly connected with the bean grinding cutter core and is in running fit with the first bearing and the second bearing, the output shaft is provided with a hanging table, is sleeved with a sleeve, is fixedly provided with a driving gear and is in threaded connection with a nut, the upper end of the hanging table abuts against the bean grinding cutter core, the lower end of the hanging table abuts against an inner shaft sleeve of the first bearing, and the upper end of the sleeve abuts against an inner shaft sleeve of the first bearing; the lower end of the first bearing abuts against the driving gear which abuts against the inner shaft sleeve of the second bearing. The driving assembly is in driving connection with the driving gear. By the adoption of the technical scheme, a stable anti-movement structure is formed, axial movement and radial movement of the output shaft are well prevented, it can be guaranteed that the coffee grinding device grinds coffee stably, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of grinding devices, and in particular to a coffee grinding device with anti-slip function. Background Technology

[0002] In conventional coffee grinders on the market, the output shaft is typically positioned using a bushing (patent example: CN217137566U). Since there can be no axial clearance on the output shaft, the end of the output shaft needs to be tightly secured with a nut. This causes friction between the end face of the rotating part and the end face of the bushing. Over time, the bushing will wear down, causing axial and radial movement. This, in turn, causes the output shaft to move up and down, affecting the grinding effect, the stability of the device, and its service life. Therefore, designing a coffee grinder that can prevent the output shaft from moving, ensure stable grinding, and extend its service life has become an urgent technical problem to be solved. Utility Model Content

[0003] In order to overcome the existing technical defects, the purpose of this utility model is to provide a coffee grinding device with anti-slip function to solve the above-mentioned technical problems.

[0004] The technical solution adopted by this utility model to solve the technical problem is as follows:

[0005] According to one aspect of this utility model, a coffee grinding device with anti-slip function is designed, comprising:

[0006] The housing is provided with a grinding chamber, a powder collecting chamber and a powder discharging channel that are interconnected, as well as a first bearing positioning groove and a second bearing positioning groove, and a first bearing and a second bearing are correspondingly positioned and installed in the first bearing positioning groove and the second bearing positioning groove.

[0007] A grinding assembly is disposed within the grinding chamber, the grinding assembly including a bean grinder sleeve and a bean grinder core disposed within the bean grinder sleeve;

[0008] A powder scraper is located inside the powder collection chamber and is connected to the grinding blade core;

[0009] The output shaft is fixedly connected to the grinding blade core at its upper end and rotates with the first bearing and the second bearing. The output shaft is provided with a mounting platform, a sleeve, a fixed drive gear, and a nut that abuts against the inner sleeve of the second bearing. The upper end of the mounting platform abuts against the grinding blade core, and the lower end abuts against the inner sleeve of the first bearing. The upper end of the sleeve abuts against the inner sleeve of the first bearing, and the lower end abuts against the drive gear. The annular portion at the lower end of the drive gear abuts against the inner sleeve of the second bearing.

[0010] A drive assembly, which is connected to the drive gear, is used to drive the drive gear to rotate.

[0011] By adopting the above technical solution, the output end can be positioned and installed through the first and second bearings. The upper end of the mounting plate on the output shaft abuts against the grinding blade core, and the lower end abuts against the inner sleeve of the first bearing. The upper end of the sleeve abuts against the inner sleeve of the first bearing, and the lower end abuts against the drive gear. The annular part at the lower end of the drive gear abuts against the inner sleeve of the second bearing. The nut abutting against the inner sleeve of the second bearing forms a stable anti-movement structure, which effectively prevents axial and radial movement of the output shaft, ensuring stable grinding of coffee beans and extending its service life.

[0012] To better address the aforementioned technical deficiencies, this utility model also offers a superior technical solution:

[0013] In some embodiments, at least three protrusions with a height not greater than 0.2 mm are distributed around the bottom circumference of the first bearing positioning groove, and the lower end face of the outer bushing of the first bearing abuts against the protrusions.

[0014] In some embodiments, the gap H between the lower end face of the first bearing outer sleeve and the bottom surface of the first bearing positioning groove is: 0 < H ≤ 0.2 mm. By leaving a gap, the problem of increased friction caused by the axial tightening force of the screws on the inner and outer sleeves of the first bearing can be avoided, effectively controlling the axial movement problem and extending the service life of the bearing.

[0015] In some embodiments, the powder scraper is provided with a locking plate, and a plurality of circumferentially distributed plug-in blocks inside the powder scraper are engaged with a plurality of circumferentially distributed notches on the locking plate.

[0016] In some embodiments, a spring and / or a flat washer is provided between the nut and the second bearing. This helps to prevent the nut from loosening.

[0017] In some embodiments, the housing includes an upper housing and a lower housing. One of the upper and lower housings has multiple positioning pins, and the other has multiple positioning holes. The positioning pins and positioning holes are inserted into each other. One end of a locking screw passes through a through hole at the bottom of the positioning hole and engages with a threaded hole on a positioning pin. Precise positioning and assembly between the upper and lower housings can be achieved through the cooperation of multiple positioning pins and multiple positioning blocks. Attached Figure Description

[0018] Figure 1 A schematic diagram of a coffee grinding device with anti-movement function according to one embodiment of the present invention;

[0019] Figure 2 A cross-sectional structural diagram of a coffee grinding device with anti-slip function;

[0020] Figure label:

[0021] 1. Housing; 11. Upper housing; 12. Lower housing; 13. Positioning post; 14. Positioning hole; 15. Grinding chamber; 16. Powder collection chamber; 17. Powder outlet channel; 2. Grinding assembly; 21. Grinding blade sleeve; 22. Grinding blade core; 3. Powder scraper; 31. Locking plate; 4. Output shaft; 41. Hanging platform; 42. Sleeve; 43. Drive gear; 44. Nut; 5. Drive assembly; 51. Motor; 52. Drive gear; 53. Parallel gear; 6. First bearing; 7. Second bearing. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0023] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, unless otherwise explicitly defined, terms such as setting, installing, connecting, and fixing should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0025] refer to Figures 1 to 2 As shown, the present invention provides a coffee grinding device with anti-slip function, comprising: a housing 1, a grinding component 2, a powder scraper 3, an output shaft 4, and a drive component 5.

[0026] The housing 1 includes an upper housing 11 and a lower housing 12. One of the upper housing 11 and the lower housing 12 is provided with a plurality of positioning pins 13, and the other is provided with a plurality of positioning holes 14. The plurality of positioning pins 13 and the plurality of positioning holes 14 are inserted and engaged. The upper end of the locking screw passes through the through hole at the bottom of the positioning hole 14 and engages with the threaded hole on the positioning pin 13 to lock and engage, thereby fixing the upper housing 11 and the lower housing 12 together.

[0027] The housing 1 is provided with a grinding chamber 15, a powder collecting chamber 16 and a powder discharging channel 17 that are interconnected, as well as a first bearing positioning groove and a second bearing positioning groove. The powder collecting chamber 16 is located below the grinding chamber 15. The powder discharging channel 17 has a powder inlet at the upper end and a powder outlet at the lower end. The powder inlet is connected to the bottom of the powder collecting chamber 16. A first bearing 6 is positioned and installed in the first bearing positioning groove, and a second bearing 7 is positioned and installed in the second bearing positioning groove.

[0028] The grinding assembly 2 is located inside the grinding chamber 15. The grinding assembly 2 includes a bean grinding blade sleeve 21 and a bean grinding blade core 22 located inside the bean grinding blade sleeve 21. The bean grinding blade sleeve 21 is fixedly connected to the housing, snapped or threaded. The bean grinding blade core 22 cooperates with the bean grinding blade sleeve 21 to grind beans. The ground bean powder falls into the powder collection chamber 16.

[0029] The powder scraper 3 is located in the powder collection chamber 16. The powder scraper 3 is connected to the grinding blade core 22 by plugging or by screws. The powder scraper 3 is used to scrape the ground soybean powder so that the soybean powder enters the powder outlet channel 17 and is output.

[0030] The upper end of the output shaft 4 is fixedly connected to the bean grinder core 22. Specifically, the output shaft 4 is inserted into the bean grinder core 22, and a nut is threadedly connected to the top of the output shaft 4, which abuts against the bean grinder core 22.

[0031] The output shaft 4 is rotatably engaged with the first bearing 6 and the second bearing 7. The output shaft 4 is equipped with a mounting platform 41, a sleeve 42, a fixed drive gear 43, and a nut 44 threadedly connected to the inner sleeve of the second bearing 7. The mounting platform 41 is a circular platform on the outer wall of the output shaft 4. A spring and / or a flat washer is provided between the nut 44 and the second bearing 7. The upper end of the mounting platform 41 abuts against the grinding blade core 22, and the lower end of the mounting platform 41 abuts against the inner sleeve of the first bearing 6, thus allowing the first... The bearing 6 is positioned as close as possible to the grinding blade core 22 to prevent radial movement of the upper end of the output shaft 4 relative to the first bearing 6. The upper end of the sleeve 42 abuts against the inner bushing of the first bearing 6, and the lower end of the sleeve 42 abuts against the drive gear 43. The annular portion at the lower end of the drive gear 43 abuts against the inner bushing of the second bearing 7. The axial fixation between the second bearing 7, the drive gear 43, the sleeve 42, the first bearing 6, and the output shaft 4 is achieved by locking the nut 44, thus preventing axial movement of the grinding blade core 22.

[0032] The drive assembly 5 is driven by the drive gear 43. The drive assembly 5 drives the drive gear 43 to rotate, which in turn drives the output shaft 4 to rotate and, in conjunction with the grinding blade 22, to rotate, thus grinding beans. Furthermore, the drive assembly 5 includes a motor 51. The drive end of the motor 51 is connected to a drive gear 52. The drive gear 52 directly meshes with the drive gear 43, or the drive gear 52 is driven by one, two, or more parallel gears 53. In this embodiment, it is preferred that the drive gear 52 is driven by two parallel gears 53, and the parallel gears 53 are rotatably engaged with the housing 1 via connecting shafts.

[0033] The bottom circumference of the first bearing positioning groove has three, four, five, or more protrusions with a height not exceeding 0.2 mm. In this embodiment, four protrusions are preferably evenly distributed around the bottom circumference of the first bearing positioning groove. The height of the protrusions is 0.05 mm, 0.1 mm, 0.15 mm, or 2 mm. In this embodiment, the height of the protrusions is preferably 0.2 mm. The lower end face of the outer bushing of the first bearing 6 abuts against the protrusions. In other embodiments, when no protrusions are provided at the bottom of the first bearing positioning groove, a gap is maintained between the lower end face of the outer bushing of the first bearing 6 and the bottom surface of the first bearing positioning groove. This gap H is: 0 < H ≤ 0.2 mm, and the gap is 0.05 mm, 0.1 mm, 0.15 mm, or 2 mm, and the specific gap is set as needed.

[0034] The powder scraper 3 is equipped with a locking plate 31, and multiple plug-in blocks distributed circumferentially inside the powder scraper 3 are engaged with multiple notches distributed circumferentially on the locking plate 31.

[0035] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A coffee grinding device with anti-slip function, characterized in that, include: The housing is provided with a grinding chamber, a powder collecting chamber and a powder discharging channel that are interconnected, as well as a first bearing positioning groove and a second bearing positioning groove, and a first bearing and a second bearing are correspondingly positioned and installed in the first bearing positioning groove and the second bearing positioning groove. A grinding assembly is disposed within the grinding chamber, the grinding assembly including a bean grinder sleeve and a bean grinder core disposed within the bean grinder sleeve; A powder scraper is located inside the powder collection chamber and is connected to the grinding blade core; The output shaft is fixedly connected to the grinding blade core at its upper end and rotates with the first bearing and the second bearing. The output shaft is provided with a mounting platform, a sleeve, a fixed drive gear, and a nut that abuts against the inner sleeve of the second bearing. The upper end of the mounting platform abuts against the grinding blade core, and the lower end abuts against the inner sleeve of the first bearing. The upper end of the sleeve abuts against the inner sleeve of the first bearing, and the lower end abuts against the drive gear. The annular portion at the lower end of the drive gear abuts against the inner sleeve of the second bearing. A drive assembly, which is connected to the drive gear, is used to drive the drive gear to rotate.

2. A coffee grinding device with anti-slip function according to claim 1, characterized in that, The bottom circumference of the first bearing positioning groove has at least three protrusions with a height not greater than 0.2 mm, and the lower end face of the outer bushing of the first bearing abuts against the protrusions.

3. A coffee grinding device with anti-slip function according to claim 1, characterized in that, The gap H between the lower end face of the outer bushing of the first bearing and the bottom surface of the positioning groove of the first bearing is: 0 < H ≤ 0.2 mm.

4. A coffee grinding device with anti-slip function according to claim 1, characterized in that, The powder scraper is equipped with a locking plate, and multiple plug-in blocks distributed circumferentially inside the powder scraper are engaged with multiple notches distributed circumferentially on the locking plate.

5. A coffee grinding device with anti-slip function according to claim 1, characterized in that, A spring plate and / or a flat washer are provided between the nut and the second bearing.

6. A coffee grinding device with anti-slip function according to claim 1, characterized in that, The housing includes an upper housing and a lower housing. One of the upper housing and the lower housing is provided with multiple positioning posts, and the other housing is provided with multiple positioning holes. The multiple positioning posts and the multiple positioning holes are inserted and engaged. One end of the locking screw passes through the through hole at the bottom of the positioning hole and locks into the threaded hole on the positioning post.

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