Manual and electric dual-purpose bean grinder

Abstract

The utility model discloses a manual and electric dual-purpose bean grinder which comprises a grinding mechanism, a manual driving mechanism and an electric driving mechanism, wherein the manual driving mechanism can be matched with the grinding mechanism for use; the electric driving mechanism can be matched with the grinding mechanism for use; the manual and electric dual-purpose bean grinder comprises a grinding mechanism, a manual driving mechanism and an electric driving mechanism, the manual driving mechanism can be matched with the grinding mechanism for use, the electric driving mechanism can be matched with the grinding mechanism for use, and when the grinding mechanism is matched with the manual driving mechanism for use, the manual and electric dual-purpose bean grinder can be used as a manual bean grinder; when the grinding mechanism is matched with the electric driving mechanism for use, the grinding mechanism can be used as the electric driving mechanism; meanwhile, compared with a manual bean grinder and an electric bean grinder which are manufactured at the same time, the manufacturing cost is lower.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee bean grinders, in particular to a manual and electric dual-purpose coffee bean grinder. Background Art

[0002] Coffee is a favorite drink of people, and people often use bean grinders to grind their favorite coffee; bean grinders are generally divided into manual bean grinders and electric bean grinders; manual bean grinders are hand-driven, easy to carry and can be used outdoors where there is no electricity; electric bean grinders are easy to operate; coffee lovers usually prepare both manual bean grinders and electric bean grinders at the same time, but it is more expensive to buy manual bean grinders and electric bean grinders separately.

[0003] The utility model is proposed in view of the deficiencies in the prior art. Utility Model Content

[0004] In view of the technical problem that coffee lovers in the prior art mentioned above usually prepare both a manual bean grinder and an electric bean grinder, but the prices of purchasing the manual bean grinder and the electric bean grinder separately are relatively high. The utility model adopts the following technical solution to solve the technical problem: a manual and electric dual-purpose coffee bean grinder, comprising: a grinding mechanism, a manual driving mechanism that can be used in conjunction with the grinding mechanism, and an electric driving mechanism that can be used in conjunction with the grinding mechanism; the grinding mechanism comprises: a grinding seat, a fixed grinding knife, a moving grinding knife and a powder storage bin, the fixed grinding knife is arranged in the grinding seat, the grinding seat is connected with a moving knife positioning seat for installing the moving grinding knife, the moving grinding knife is rotatably connected to the moving knife positioning seat and can cooperate with the fixed grinding knife to grind powder, the grinding seat is provided with a grinding cavity for placing beans to be ground and is located above the moving grinding knife, the powder storage bin is connected to the lower end of the grinding seat for receiving the ground powder, and the grinding seat is also connected with a connecting shaft that drives the moving grinding knife to rotate; the manual driving mechanism comprises: a first docking seat, a cover body, an output shaft, an input shaft, a first docking joint and a hand crank, the cover body is connected to On the first docking seat, the input shaft is rotatably connected to the cover body, the output shaft is rotatably connected to the first docking seat and linked to the input shaft, the first docking joint is connected to the lower end of the output shaft, the hand crank is connected to the input shaft, the upper end of the grinding seat is detachably connected to the first docking seat, and the first docking joint can be matched and connected with the upper end of the connecting shaft; the electric drive mechanism includes: a machine base, a second docking seat, a second docking joint, an output end, a speed change mechanism and a motor, the second docking seat is connected to the machine base, the output end is rotatably connected to the machine base, the second docking joint is connected to the lower end of the output end, the motor is arranged on the machine base to drive the second docking joint to rotate, the speed change mechanism is arranged between the rotating shaft and the output end of the motor for deceleration, the upper end of the grinding seat is detachably connected to the second docking seat, and the second docking joint can be matched and connected with the upper end of the connecting shaft.

[0005] In the manual-electric dual-purpose coffee grinder as described above, at least two first connecting hook grooves with a shape of “┐” are provided on the outer side surface of the first docking seat and along the circumferential direction, and a first limiting protrusion is provided in the first connecting hook groove; at least two second connecting hook grooves with a shape of “┐” are provided on the outer side surface of the second docking seat and along the circumferential direction, and a second limiting protrusion is provided in the second connecting hook groove; a connecting protrusion matching the first connecting hook groove or the second connecting hook groove is provided on the upper edge of the grinding seat, and a limiting groove matching the first limiting protrusion or the second limiting protrusion is provided in the middle of the connecting protrusion.

[0006] In the manual and electric dual-purpose coffee grinder as described above, the movable knife positioning seat is provided with a wear-resistant sheet that is in frictional contact with the movable grinding knife; the lower end of the connecting shaft is connected with a driving disk, the driving disk is located between the movable grinding knife and the wear-resistant sheet, the lower end of the connecting shaft is provided with a driving head, the driving disk is provided with a driving port that is slidably matched with the driving head, and a connecting pin is provided between the driving disk and the movable grinding knife to enable the movable grinding knife to rotate with the driving disk.

[0007] In the manual and electric dual-purpose coffee grinder as described above, the portion of the driving disc that is in sliding contact with the wear-resistant sheet is provided with an annular contact protrusion.

[0008] In the manual-electric dual-purpose coffee grinder as described above, the wear-resistant sheet is provided with a downwardly bent positioning foot, and the movable knife positioning seat is provided with a positioning hole for the positioning foot to be inserted into.

[0009] In the manual-electric dual-purpose coffee bean grinder as described above, a positioning frame for positioning the connecting shaft is provided on the grinding seat, the upper part of the connecting shaft is rotatably connected to the positioning frame, and a spring for driving the movable grinding knife to be in close contact with the wear-resistant sheet is sleeved on the connecting shaft, and the spring is located between the positioning frame and the movable grinding knife.

[0010] In the manual-electric dual-purpose coffee bean grinder as described above, the lower end of the grinding seat is connected to a connecting seat, the movable knife positioning seat is connected between the grinding seat and the connecting seat and can slide up and down between the two, and the grinding seat is provided with a coarseness adjustment block for adjusting the relative position of the movable knife positioning seat relative to the connecting seat and thereby adjusting the gap between the fixed grinding knife and the movable grinding knife.

[0011] In the manual-electric dual-purpose coffee bean grinder as described above, the grinding seat is provided with a guide column for guiding the movable knife positioning seat, the coarseness adjustment block comprises: an adjustment ring and a toggle block, the adjustment ring is rotatably connected between the grinding seat and the connecting seat, the outer side wall of the movable knife positioning seat is provided with a stepped gear, the adjustment ring is provided with a push block that cooperates with the gear to adjust the gap between the fixed grinding knife and the movable grinding knife, so that when the adjustment ring is rotated, the push block cooperates with different positions of the gear to make the fixed grinding knife and the movable grinding knife be in different gaps.

[0012] In the manual-electric dual-purpose coffee grinder as described above, a planetary gear reduction mechanism is provided between the first docking seat and the cover body, and the planetary gear reduction mechanism comprises: a sun gear, a planetary gear, a planetary gear frame and a ring gear, the ring gear is provided on the first docking seat, the output shaft is connected to one side of the planetary gear frame, the planetary gear is rotatably connected to the planetary gear frame, the input shaft is connected to one side of the sun gear, and the planetary gear is meshed with the ring gear and the sun gear at the same time.

[0013] The beneficial effects of the utility model are:

[0014] 1. The manual-electric dual-purpose coffee bean grinder of the utility model comprises: a grinding mechanism, a manual drive mechanism that can be used in conjunction with the grinding mechanism, and an electric drive mechanism that can be used in conjunction with the grinding mechanism. When the grinding mechanism is used in conjunction with the manual drive mechanism, it can be used as a manual coffee bean grinder; when the grinding mechanism is used in conjunction with the electric drive mechanism, it can be used as an electric drive mechanism; it can achieve the advantage of one machine for dual purposes, and at the same time, compared with manufacturing both a manual coffee bean grinder and an electric coffee bean grinder at the same time, the cost is lower.

[0015] 2. When the grinding mechanism needs to be installed on the manual drive mechanism, the connecting protrusion first enters the first connecting hook groove, and then the grinding seat is rotated, so that the first limiting protrusion is stuck in the limiting groove and can be removed in the opposite direction, thereby realizing quick disassembly and assembly; when the grinding mechanism needs to be installed on the electric drive mechanism, the connecting protrusion first enters the second connecting hook groove, and then the grinding seat is rotated, so that the second limiting protrusion is stuck in the limiting groove and can be removed in the opposite direction, thereby realizing quick disassembly and assembly; it has the advantage of convenient installation.

[0016] 3. When used as an electric coffee grinder, the manual drive mechanism can be hung on a hook for easy organization, which has the advantage of convenient organization.

[0017] 4. A wear-resistant sheet in frictional contact with the moving grinding knife is provided on the moving knife positioning seat. The wear-resistant sheet can be made of stainless steel material, which can reduce the wear of the moving knife positioning seat, thereby increasing the service life of the grinding mechanism, and has a simple structure and low cost.

[0018] 5. A planetary gear reduction mechanism is provided between the docking seat and the cover body to reduce the speed between the input shaft and the output shaft. It has the advantages of compact structure, small size, large transmission ratio, low operating noise, high efficiency and long service life, and can easily achieve grinding.

[0019] The utility model will be further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the manual and electric dual-purpose coffee grinder of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the electric drive mechanism of the utility model;

[0022] Figure 3 It is an exploded schematic diagram of the electric drive mechanism and the grinding mechanism of the utility model;

[0023] Figure 4 for Figure 3An enlarged view of the portion marked A in FIG.

[0024] Figure 5 This is one of the exploded schematic diagrams of the electric drive mechanism of the utility model;

[0025] Figure 6 This is the second exploded schematic diagram of the electric drive mechanism of the utility model;

[0026] Figure 7 It is an exploded schematic diagram of the manual drive mechanism and the grinding mechanism of the utility model;

[0027] Figure 8 for Figure 7 An enlarged view of the portion marked B in FIG.

[0028] Fig. 9 This is one of the exploded schematic diagrams of the retracting and moving driving mechanism of the utility model;

[0029] Fig.10 This is the second exploded schematic diagram of the receiving and moving driving mechanism of the utility model;

[0030] Fig.11 It is a structural schematic diagram of the grinding mechanism of the utility model;

[0031] Fig.12 This is one of the exploded schematic diagrams of the grinding mechanism of the utility model;

[0032] Fig.13 This is the second exploded schematic diagram of the grinding mechanism of the utility model;

[0033] Fig.14 It is a full cross-sectional schematic diagram of the grinding mechanism of the utility model. DETAILED DESCRIPTION

[0034] The implementation modes of the present utility model are described in detail below in conjunction with the accompanying drawings.

[0035] like Figures 1 to 14As shown, a manual and electric dual-purpose coffee bean grinder of this embodiment comprises: a grinding mechanism 1, a manual drive mechanism 2 that can be used in conjunction with the grinding mechanism 1, and an electric drive mechanism 3 that can be used in conjunction with the grinding mechanism 1; the grinding mechanism 1 comprises: a grinding seat 11, a fixed grinding knife 121, a movable grinding knife 122 and a powder storage bin 13, the fixed grinding knife 121 is arranged in the grinding seat 11, the grinding seat 11 is connected to a movable knife positioning seat 14 for mounting the movable grinding knife 122, the movable grinding knife 122 is rotatably connected to the movable knife positioning seat 14 and The grinding seat 11 is provided with a grinding chamber 1101 for placing beans to be ground, and can cooperate with the fixed grinding knife 121 to grind powder. The grinding seat 11 is located above the moving grinding knife 122 and is provided with a grinding chamber 1101 for placing beans to be ground. The powder storage bin 13 is connected to the lower end of the grinding seat 11 for receiving the ground powder. The grinding seat 11 is also connected to a connecting shaft 15 that drives the moving grinding knife 122 to rotate. The manual drive mechanism 2 comprises: a first docking seat 21, a cover body 27, an output shaft 24, an input shaft 25, a first docking joint 22 and a hand crank 26. The cover body 27 is connected to the first The input shaft 25 is rotatably connected to the cover 27 on the docking seat 21, the output shaft 24 is rotatably connected to the first docking seat 21 and is linked to the input shaft 25, the first docking joint 22 is connected to the lower end of the output shaft 24, the hand crank 26 is connected to the input shaft 25, the upper end of the grinding seat 11 is detachably connected to the first docking seat 21, and the first docking joint 22 can be matched and connected with the upper end of the connecting shaft 15; the electric drive mechanism 3 includes: a machine base 31, a second docking seat 32, and a second docking joint 33 , output end, speed change mechanism 37 and motor 34, the second docking seat 32 is connected to the machine base 31, the output end is rotatably connected to the machine base 31, the second docking joint 33 is connected to the lower end of the output end, the motor 34 is arranged on the machine base 31 to drive the second docking joint 33 to rotate, the speed change mechanism 37 is arranged between the rotating shaft of the motor 34 and the output end for deceleration, the upper end of the grinding seat 11 is detachably connected to the second docking seat 32, and the second docking joint 33 can be matched and connected with the upper end of the connecting shaft 15. The manual and electric dual-purpose coffee bean grinder of the utility model comprises: a grinding mechanism, a manual driving mechanism that can be used in conjunction with the grinding mechanism, and an electric driving mechanism that can be used in conjunction with the grinding mechanism. When the grinding mechanism is used in conjunction with the manual driving mechanism, it can be used as a manual coffee bean grinder; when the grinding mechanism is used in conjunction with the electric driving mechanism, it can be used as an electric driving mechanism; it can achieve the advantage of one machine for two purposes, and at the same time, compared with manufacturing a manual coffee bean grinder and an electric coffee bean grinder at the same time, the cost is lower.

[0036] In order to enable quick connection between the grinding mechanism and the electric drive mechanism or the manual drive mechanism, at least two first connecting hook grooves 211 with a “┐” shape are provided on the outer side surface of the first docking seat 21 and along the circumferential direction, and a first limiting protrusion 212 is provided in the first connecting hook groove 211; at least two second connecting hook grooves 321 with a “┐” shape are provided on the outer side surface of the second docking seat 32 and along the circumferential direction, and a second limiting protrusion 322 is provided in the second connecting hook groove 321; a connecting protrusion 113 matching the first connecting hook groove 211 or the second connecting hook groove 321 is provided on the upper edge of the grinding seat 11, and a limiting groove 1130 matching the first limiting protrusion 212 or the second limiting protrusion 322 is provided in the middle part of the connecting protrusion 113. When the grinding mechanism needs to be installed on the manual drive mechanism, the connecting protrusion 113 first enters the first connecting hook groove, and then the grinding seat is rotated, so that the first limiting protrusion is stuck in the limiting groove, and it can be removed in the opposite direction, so as to achieve rapid disassembly and assembly; when the grinding mechanism needs to be installed on the electric drive mechanism, the connecting protrusion 113 first enters the second connecting hook groove, and then the grinding seat is rotated, so that the second limiting protrusion is stuck in the limiting groove, and it can be removed in the opposite direction, so as to achieve rapid disassembly and assembly. It has the advantage of convenient installation.

[0037] like Figures 11 to 14 As shown, in this embodiment, a wear-resistant sheet 16 that is in frictional contact with the moving grinding knife 122 is provided on the moving knife positioning seat 14; by providing a wear-resistant sheet that is in frictional contact with the moving grinding knife on the moving knife positioning seat, the wear-resistant sheet can be made of stainless steel, which can reduce the wear of the moving knife positioning seat, thereby improving the service life of the grinding mechanism, and the structure is simple and the cost is low. A driving disc 17 is connected to the lower end of the connecting shaft 15, and the driving disc 17 is located between the moving grinding knife 122 and the wear-resistant sheet 16. A driving head 151 is provided at the lower end of the connecting shaft 15, and a driving port 171 that is slidably matched with the driving head 151 is provided on the driving disc 17, and a connecting pin 172 is provided between the driving disc 17 and the moving grinding knife 122 to make the moving grinding knife 122 rotate with the driving disc 17. Arranging a driving disc between the moving grinding knife 122 and the wear-resistant sheet 16 has two advantages. The first is that it is convenient to assemble and process; the second is that the driving disc can be made of a wear-resistant and pressure-resistant material (such as cast iron), which can improve the service life.

[0038] In this embodiment, an annular contact protrusion 173 is provided at the portion where the drive disc 17 and the wear-resistant sheet 16 are in sliding contact. The cross section of the annular contact protrusion 173 is semicircular, which can change the surface contact between the drive disc 17 and the wear-resistant sheet 16 into line contact, thereby reducing friction and heat generation.

[0039] In this embodiment, the wear-resistant sheet 16 is provided with a downwardly bent positioning foot 161, and the movable knife positioning seat 14 is provided with a positioning hole 1401 for inserting the positioning foot 161. This design has the advantage of convenient assembly.

[0040] In this embodiment, a positioning frame 111 for positioning the connecting shaft 15 is provided on the grinding seat 11, and the upper part of the connecting shaft 15 is rotatably connected to the positioning frame 111. A spring 152 for driving the moving grinding knife 122 to be in close contact with the wear-resistant sheet 16 is sleeved on the connecting shaft 15, and the spring 152 is located between the positioning frame 111 and the moving grinding knife 122. The moving grinding knife 122 can be driven to be in close contact with the wear-resistant sheet 16 by the spring 152, so that the spacing between the moving grinding knife 122 and the fixed grinding knife is kept constant, so that the coarseness of the grinding is consistent.

[0041] In this embodiment, a connecting seat 18 is connected to the lower end of the grinding seat 11, and the movable knife positioning seat 14 is connected between the grinding seat 11 and the connecting seat 18 and can slide up and down between the two. The grinding seat 11 is provided with a coarseness adjustment block 19 for adjusting the relative position of the movable knife positioning seat 14 relative to the connecting seat 18 and thus adjusting the gap between the fixed grinding knife 121 and the movable grinding knife 122. The coarseness adjustment block 19 adjusts the relative position of the movable knife positioning seat 14 relative to the connecting seat 18 to adjust the gap between the fixed grinding knife 121 and the movable grinding knife 122, thereby adjusting the coarseness of the ground powder.

[0042] In this embodiment, a guide column 112 for guiding the movable blade positioning seat 14 is provided on the grinding seat 11, and the coarseness adjustment block 19 comprises: an adjustment ring 191 and a toggle block 192, the adjustment ring 191 is rotatably connected between the grinding seat 11 and the connecting seat 18, the outer wall of the movable blade positioning seat 14 is provided with a step-shaped gear 141, and the adjustment ring 191 is provided with a push block 193 that cooperates with the gear 141 to adjust the gap between the fixed grinding blade 121 and the movable grinding blade 122, so that when the adjustment ring 191 is rotated, the push block 193 cooperates with different positions of the gear 141 to make the fixed grinding blade 121 and the movable grinding blade 122 in different gaps. Because the gear 141 is in a step-shaped shape, when the coarseness adjustment block is rotated, when the push block contacts different positions of the gear 141, the relative position of the movable blade positioning seat 14 relative to the connecting seat 18 can be adjusted, thereby achieving the adjustment of the coarseness of the ground powder.

[0043] like Figures 7 to 10As shown, in order to make the manual drive mechanism more labor-saving, a planetary gear reduction mechanism 23 is provided between the first docking seat 21 and the cover body 27, and the planetary gear reduction mechanism 23 comprises: a sun gear 231, a planetary gear 232, a planetary gear carrier 233 and a ring gear 234, wherein the ring gear 234 is provided on the first docking seat 21, the output shaft 24 is connected to one side of the planetary gear carrier 233, the planetary gear 232 is rotatably connected to the planetary gear carrier 233, the input shaft 25 is connected to one side of the sun gear 231, and the planetary gear 232 is meshed with the ring gear 234 and the sun gear 231 at the same time. By providing a planetary gear reduction mechanism between the docking seat and the cover body, the planetary gear reduction mechanism is used to reduce the speed between the input shaft and the output shaft, which has the advantages of compact structure, small volume, large transmission ratio, low operating noise, high efficiency and long service life, and can easily achieve grinding.

[0044] In this embodiment, a planetary gear positioning shaft 2331 for positioning the planetary gear 232 is provided on the planetary gear carrier 233 , and the planetary gear 232 is rotatably connected to the planetary gear positioning shaft 2331 , so as to facilitate the assembly of the planetary gear 232 .

[0045] In this embodiment, the planetary gear carrier 233, the planetary gear positioning shaft 2331, the output shaft 24 and the docking joint 22 are integrally formed, which facilitates processing and reduces costs.

[0046] A circular protrusion 2331 is provided at the position where the planetary gear carrier 233 contacts the docking seat 21; the cross section of the protrusion 2331 is semicircular, so that the position where the planetary gear carrier 233 contacts the docking seat 21 can be changed from surface contact to line contact, which can reduce friction.

[0047] In order to facilitate assembly, a docking groove 2310 is provided on the sun gear 231 , and a plug-in portion 251 which can be inserted into the docking groove 2310 is provided on the input shaft 25 .

[0048] A limiting disc 252 is provided at the middle of the input shaft 25 and contacts the inner wall of the cover body 27 . The input shaft can be positioned by the limiting disc to facilitate assembly.

[0049] The above examples are only used to further illustrate the technical content of the utility model, so that readers can understand it more easily, but it does not mean that the implementation methods of the utility model are limited to this. Any technical extension or re-creation made based on the utility model is protected by the utility model. The protection scope of the utility model shall be based on the claims.

Claims

1. A manual and electric dual-purpose coffee grinder, characterized in that: include: A grinding mechanism (1), a manual drive mechanism (2) that can be used in conjunction with the grinding mechanism (1), and an electric drive mechanism (3) that can be used in conjunction with the grinding mechanism (1); the grinding mechanism (1) comprises: a grinding seat (11), a fixed grinding knife (121), a movable grinding knife (122), and a powder storage bin (13); the fixed grinding knife (121) is arranged in the grinding seat (11); the grinding seat (11) is connected to a movable knife positioning seat (14) for mounting the movable grinding knife (122); the movable grinding knife (122) is rotatably connected to the movable knife positioning seat (14) and can cooperate with the fixed grinding knife (121) to grind powder. The grinding seat (11) is provided with a grinding chamber (1101) for placing beans to be ground, and is located above the moving grinding knife (122). The powder storage bin (13) is connected to the lower end of the grinding seat (11) for receiving the ground powder. The grinding seat (11) is also connected to a connecting shaft (15) for driving the moving grinding knife (122) to rotate. The manual drive mechanism (2) comprises: a first docking seat (21), a cover body (27), an output shaft (24), an input shaft (25), a first docking joint (22) and a hand crank (26). The cover body (27) is connected to the first docking seat (21). The input shaft (25) is rotatably connected to the cover body (27); the output shaft (24) is rotatably connected to the first docking seat (21) and is linked to the input shaft (25); the first docking joint (22) is connected to the lower end of the output shaft (24); the hand crank (26) is connected to the input shaft (25); the upper end of the grinding seat (11) is detachably connected to the first docking seat (21); the first docking joint (22) can be matched and connected to the upper end of the connecting shaft (15); the electric drive mechanism (3) comprises: a machine base (31), a second docking seat (32), a second docking joint (33), an output shaft (24), and a first docking joint (22). The invention relates to a grinding machine (11) comprising a grinding wheel (12) and a grinding wheel (13). The grinding wheel (12) comprises a grinding wheel (13) and a grinding wheel (14). The grinding wheel (13) comprises a grinding wheel (14) and a grinding wheel (15). The grinding wheel (13) comprises a grinding wheel (14) and a grinding wheel (15). The grinding wheel (13) comprises a grinding wheel (14) and a grinding wheel (15). The grinding wheel (13) comprises a grinding wheel (14) and a grinding wheel (15). The grinding wheel (13) comprises a grinding wheel (14) and a grinding wheel (15). The grinding wheel (13) comprises a grinding wheel (14) and a grinding wheel (15). The grinding wheel (13) comprises a grinding wheel (14) and a grinding wheel (15).

2. A manual and electric dual-purpose coffee grinder according to claim 1, characterized in that: The outer side surface of the first docking seat (21) is provided with at least two first connecting hook grooves (211) with a shape of "┐" along the circumferential direction, and a first limiting protrusion (212) is provided in the first connecting hook groove (211); the outer side surface of the second docking seat (32) is provided with at least two second connecting hook grooves (321) with a shape of "┐" along the circumferential direction, and a second limiting protrusion (322) is provided in the second connecting hook groove (321); the upper edge of the grinding seat (11) is provided with a connecting protrusion (113) matching with the first connecting hook groove (211) or the second connecting hook groove (321), and the middle part of the connecting protrusion (113) is provided with a limiting groove (1130) matching with the first limiting protrusion (212) or the second limiting protrusion (322).

3. The manual and electric dual-purpose coffee grinder according to claim 1, characterized in that: The movable knife positioning seat (14) is provided with a wear-resistant sheet (16) which is in frictional contact with the movable grinding knife (122); the lower end of the connecting shaft (15) is connected with a driving disk (17), the driving disk (17) is located between the movable grinding knife (122) and the wear-resistant sheet (16), the lower end of the connecting shaft (15) is provided with a driving head (151), the driving disk (17) is provided with a driving opening (171) which is slidably matched with the driving head (151), and a connecting pin (172) is provided between the driving disk (17) and the movable grinding knife (122) so that the movable grinding knife (122) rotates along with the driving disk (17).

4. The manual and electric dual-purpose coffee grinder according to claim 3, characterized in that: The portion of the driving disc (17) that is in sliding contact with the wear-resistant plate (16) is provided with an annular contact protrusion (173).

5. The manual and electric dual-purpose coffee grinder according to claim 3, characterized in that: The wear-resistant sheet (16) is provided with a downwardly bent positioning foot (161), and the movable knife positioning seat (14) is provided with a positioning hole (1401) for the positioning foot (161) to be inserted therein.

6. The manual and electric dual-purpose coffee grinder according to claim 3, characterized in that: The grinding seat (11) is provided with a positioning frame (111) for positioning the connecting shaft (15); the upper part of the connecting shaft (15) is rotatably connected to the positioning frame (111); the connecting shaft (15) is sleeved with a spring (152) for driving the moving grinding knife (122) to be in close contact with the wear-resistant sheet (16); the spring (152) is located between the positioning frame (111) and the moving grinding knife (122).

7. A manual and electric dual-purpose coffee bean grinder according to any one of claims 3-4, characterized in that: The lower end of the grinding seat (11) is connected to a connecting seat (18), the movable knife positioning seat (14) is connected between the grinding seat (11) and the connecting seat (18) and can slide up and down between the two, and the grinding seat (11) is provided with a coarseness adjustment block (19) for adjusting the relative position of the movable knife positioning seat (14) relative to the connecting seat (18) and thus adjusting the gap between the fixed grinding knife (121) and the movable grinding knife (122).

8. The manual and electric dual-purpose coffee bean grinder according to claim 7, characterized in that: The grinding seat (11) is provided with a guide column (112) for guiding the movable blade positioning seat (14); the coarseness adjustment block (19) comprises: an adjustment ring (191) and a toggle block (192); the adjustment ring (191) is rotatably connected between the grinding seat (11) and the connecting seat (18); the outer side wall of the movable blade positioning seat (14) is provided with a stepped gear position (141); the adjustment ring (191) is provided with a push block (193) which cooperates with the gear position (141) to adjust the gap between the fixed grinding blade (121) and the movable grinding blade (122), so that when the adjustment ring (191) is rotated, the push block (193) cooperates with different positions of the gear position (141) to make the fixed grinding blade (121) and the movable grinding blade (122) be in different gaps.

9. The manual and electric dual-purpose coffee grinder according to claim 1, characterized in that: A planetary gear reduction mechanism (23) is provided between the first docking seat (21) and the cover body (27), the planetary gear reduction mechanism (23) comprising: a sun gear (231), a planetary gear (232), a planetary gear carrier (233) and a ring gear (234), the ring gear (234) being provided on the first docking seat (21), the output shaft (24) being connected to one side of the planetary gear carrier (233), the planetary gear (232) being rotatably connected to the planetary gear carrier (233), the input shaft (25) being connected to one side of the sun gear (231), and the planetary gear (232) being meshed with the ring gear (234) and the sun gear (231) at the same time.

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