A novel coffee grinder structure

Abstract

This application relates to the field of coffee machine technology, and more particularly to a novel coffee grinder structure, including a razor assembly, a gearbox housing, a gearbox assembly, and a drive module. The gearbox assembly includes an output shaft, a gear stop washer, stop beads, a spring, and a first gear. The output shaft is sequentially connected to the razor assembly, passes through the mounting base of the gearbox housing and the gear stop washer, and connects to the first gear. The output shaft is provided with an eccentric shaft, and the center of the gear stop washer is provided with an eccentric hole that matches the eccentric shaft. The top of the first gear is provided with a large circular groove, and the gear stop washer is disposed in the large circular groove. The first gear has multiple small circular grooves, multiple stop beads, a spring, and limiting holes for the gear stop washer. This application provides a novel coffee grinder structure that, through the design of the stop bead-spring structure, prevents damage to the gears and motor when stalled, allowing the product to continue to function normally even after the stall is cleared.

Description

Technical Field

[0001] This application relates to the field of coffee machine technology, and in particular to a novel coffee grinder structure. Background Technology

[0002] The stall process refers to the working state of an electric motor in which the rotor (rotating part) cannot rotate or the speed is severely low due to excessive external resistance or mechanical jamming when the motor is energized.

[0003] In related technologies, existing coffee grinding systems are prone to gear slippage during stalling. Prolonged stalling due to slippage is extremely dangerous, potentially burning out the motor or damaging the mechanical structure. The significant stall torque can cause mechanical damage to the motor's bearings, gearbox, and the driven transmission mechanisms (such as gears and belts). Therefore, coffee grinding products in related technologies suffer from an irreparable problem of gear slippage after stalling. Utility Model Content

[0004] In order to overcome the shortcomings of related technologies, this application provides a novel coffee grinder structure.

[0005] A novel coffee grinder structure includes a drive module, a second gear connected to the drive module, a first gear meshing with the second gear, and an output shaft driven by the first gear, the output shaft being connected to a grinding blade assembly; The output shaft is connected to the first gear via a coaxially rotating gear stop washer. The gear stop washer is provided with a limit hole. The first gear is provided with a stop block that cooperates with the limit hole. The stop block is provided with a guide surface. The stop block abuts against the limit hole through an elastic structure, so that when the circumferential force between the gear stop washer and the first gear is greater than a preset force, the stop block overcomes the elastic structure and disengages from the limit hole.

[0006] Furthermore, the stop block is configured as a stop glass bead, and the elastic structure is configured as a spring.

[0007] Furthermore, the first gear is provided with multiple small circular grooves, and springs are respectively set in the small circular grooves one by one.

[0008] Furthermore, multiple stop glass beads are provided, and the multiple stop glass beads are arranged circumferentially around the output shaft.

[0009] Furthermore, a hollow groove is provided inside the first gear.

[0010] Furthermore, a large circular groove is provided on the top of the first gear to mate with the gear retaining washer.

[0011] Furthermore, the output shaft includes threaded connection portions at both ends and a rotating round shaft and an eccentric shaft located between the two ends. The gear stop washer is provided with an eccentric hole and is sleeved on the eccentric shaft through the eccentric hole, rotating coaxially with the output shaft.

[0012] Furthermore, the diameter of the rotating shaft is larger than the diameter of the eccentric shaft, and the gear stop washer is limited within the large circular groove by the end of the rotating shaft.

[0013] Furthermore, the first gear is provided with a central hole, and the bottom of the output shaft passes through the central hole and is connected to a limit nut.

[0014] Furthermore, the drive module includes a mounting plate, and the second gear, the first gear, and the output shaft driven by the first gear are all mounted on the mounting plate.

[0015] This application has at least one of the following beneficial effects: This application provides a novel grinder structure that prevents damage to gears and motors during stalling by using a stop glass ball-spring structure design, so that even if the product malfunctions, it can still be used normally after the stalling fault is cleared. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the overall structure of an embodiment of this application.

[0017] Figure 2 This is an exploded view of the overall structure of an embodiment of this application.

[0018] Figure 3 Examples of this application Figure 1 An enlarged schematic diagram of part A of the structure.

[0019] Reference numerals: 1. Grinding tool assembly; 2. Gearbox housing; 3. Output shaft; 4. Gear stop washer; 5. Stopping glass ball; 6. First gear; 7. Spring; 8. Drive module; 9. Second gear; 21. Mounting base; 23. First intermediate circular hole; 31. Eccentric shaft; 42. Limiting hole; 43. Eccentric hole; 61. Large circular groove; 62. Small circular groove; 63. Center hole; 64. Hollowed-out groove. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0021] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0023] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0024] like Figure 1 and Figure 3 As shown, a novel coffee grinder structure includes a grinding blade assembly 1, a gearbox housing 2, a gearbox assembly, and a drive module 8. The drive module 8 drives a second gear 9 connected to the drive module 8 to rotate, thereby driving a first gear 6 meshing with the second gear 9 and an output shaft 3 driven by the first gear 6 to rotate. The output shaft 3 is connected to the grinding blade assembly 1. The grinding blade assembly 1 is disposed in a mounting base 21 of the gearbox housing 2, and the gearbox assembly is disposed below the mounting base 21. The gearbox assembly includes an output shaft 3, a gear stop washer 4, a stop glass ball 5, a spring 7, and a first gear 6. The output shaft 3 is connected to the first gear 6 through a coaxially rotating gear stop washer 4. The output shaft 3 is sequentially connected to the grinding blade assembly 1 and passes through the mounting base 21 and the gear stop washer 4 of the gearbox housing 2. The gear stop washer 4 is provided with a limiting hole 42. The first gear 6 is provided with a stop block that cooperates with the limiting hole 42. The stop block is provided with a guide surface. The stop block abuts against the limiting hole 42 through an elastic structure, so that when the circumferential force between the gear stop washer 4 and the first gear 6 is greater than a preset force, the stop block overcomes the elastic structure and disengages from the limiting hole 42.

[0025] Specifically, the top of the first gear 6 is provided with a large circular groove 61 that mates with the gear stop washer 4 for mounting the gear stop washer 4. The inner wall of the large circular groove 61 abuts against the outer wall of the gear stop washer 4. The stop block is provided with a stop glass bead 5, and the elastic structure is provided with a spring 7. The first gear 6 is provided with six small circular grooves 62, and the springs 7 are respectively provided in the small circular grooves 62. Six stop glass beads 5 are provided, and the six stop glass beads 5 are arranged circumferentially around the output shaft 3. The diameter of the stop glass beads 5 is smaller than the inner diameter of the small circular grooves 62. The top of the stop glass beads 5 abuts against the limiting holes 42 of the gear stop washer 4. The first gear 6 is provided with a hollow groove 64. The bottom of the stop glass beads 5 abuts against the spring 7; the top of the stop glass beads 5 abuts against the limiting holes 42 of the gear stop washer 4. The arc of the stop glass beads 5 abutting against the limiting holes 42 serves as a guide surface. The center of the stop glass bead 5 is lower than the gear stop shim 4.

[0026] The output shaft 3 includes threaded connections at both ends and a rotating round shaft and an eccentric shaft 31 located between the two ends. A gear stop washer 4 has an eccentric hole 43 and is fitted onto the eccentric shaft 31 through the eccentric hole 43, rotating coaxially with the output shaft 3. The diameter of the rotating round shaft is larger than the diameter of the eccentric shaft 31, and the rotating round shaft and the eccentric shaft 31 are arranged vertically. The output shaft 3 is integrally formed. The gear stop washer 4 is limited within the large circular groove 61 by the end of the rotating round shaft. The first gear 6 has a central hole 63, and the bottom of the output shaft 3 passes through the central hole 63 and is connected to a limit nut. The output shaft 3 passes through the first intermediate circular hole 23 of the mounting base 21 at the top of the gearbox housing 2. The top of the output shaft 3 is threadedly connected to the grinding tool assembly 1. The output shaft 3 then sequentially passes through the eccentric hole 43 of the gear stop washer 4, the central hole 63 of the first gear 6, the mounting plate of the drive module 8, and is fixedly connected to the nut by threads.

[0027] The drive module 8 includes a mounting plate, on which the second gear 9, the first gear 6, and the output shaft 3 driven by the first gear 6 are all mounted.

[0028] The drive module 8 is equipped with a motor and a second gear 9. The second gear 9 meshes with the first gear 6. The motor drives the second gear 9 to rotate, the second gear 9 drives the first gear 6 to rotate, the first gear 6 drives the gear stop washer 4 to rotate, the gear stop washer 4 drives the output shaft 3 to rotate, and the output shaft 3 drives the grinding assembly 1 to rotate.

[0029] The working principle of this application embodiment: like Figure 2As shown, when the entire gearbox assembly is working, the drive module 8 drives the second gear 9 to rotate. The second gear 9 meshes with the first gear 6, and the second gear 9 drives the first gear 6 to rotate. At this time, the first gear 6 drives the gear stop washer 4 through the stop glass ball 5, thereby driving the output shaft 3 to make the grinding assembly 1 work. When the grinding assembly 1 malfunctions and causes the gearbox assembly to stall, if the stalling force is greater than the compression force of the spring 7, the stop glass ball 5 will be disengaged from its original position by the downward force of the gear stop washer 4, and will no longer drive the gear stop washer 4 to move. Thus, the first gear 6 and the second gear 9 will maintain their original movement mode and will not be affected by the stalling force to cause slippage. This will not damage the gears and the motor.

[0030] In summary, this application provides a novel grinder structure that can prevent damage to gears and motors during stalling by using a stop glass ball-spring structure design, so that even if the product malfunctions, it can still be used normally after the stalling fault is cleared.

[0031] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A novel coffee grinder structure, characterized in that, It includes a drive module (8), a second gear (9) connected to the drive module (8), a first gear (6) meshing with the second gear (9), and an output shaft (3) driven by the first gear (6). The output shaft (3) is connected to the grinding assembly (1). The output shaft (3) is connected to the first gear (6) through a coaxially rotating gear stop washer (4). The gear stop washer (4) is provided with a limiting hole (42). The first gear (6) is provided with a stop block that cooperates with the limiting hole (42). The stop block is provided with a guide surface. The stop block abuts against the limiting hole (42) through an elastic structure so that when the circumferential force between the gear stop washer (4) and the first gear (6) is greater than a preset force, the stop block overcomes the elastic structure and disengages from the limiting hole (42).

2. The novel coffee grinder structure according to claim 1, characterized in that, The stop block is provided with a stop glass bead (5), and the elastic structure is provided with a spring (7).

3. The novel coffee grinder structure according to claim 2, characterized in that, The first gear (6) is provided with multiple small circular grooves (62), and the springs (7) are respectively provided in the small circular grooves (62).

4. The novel coffee grinder structure according to claim 3, characterized in that, Multiple stop glass beads (5) are provided, and the multiple stop glass beads (5) are arranged circumferentially around the output shaft (3).

5. The novel coffee grinder structure according to claim 1, characterized in that, The first gear (6) has a hollowed-out groove (64) inside.

6. The novel coffee grinder structure according to claim 1, characterized in that, The top of the first gear (6) is provided with a large circular groove (61) that mates with the gear stop washer (4).

7. The novel coffee grinder structure according to claim 6, characterized in that, The output shaft (3) includes threaded connection parts at both ends and a rotating round shaft and an eccentric shaft (31) located between the two ends. The gear stop washer (4) is provided with an eccentric hole (43) and is sleeved on the eccentric shaft (31) through the eccentric hole (43) and rotates coaxially with the output shaft (3).

8. The novel coffee grinder structure according to claim 7, characterized in that, The diameter of the rotating shaft is larger than the diameter of the eccentric shaft (31), and the gear stop washer (4) is limited in the large circular groove (61) by the end of the rotating shaft.

9. The novel coffee grinder structure according to claim 1, characterized in that, The first gear (6) is provided with a center hole (63), and the bottom of the output shaft (3) passes through the center hole (63) and is connected to a limit nut.

10. The novel coffee grinder structure according to claim 9, characterized in that, The drive module includes a mounting plate (8), a second gear (9), a first gear (6), and an output shaft (3) driven by the first gear (6), all mounted on the mounting plate.

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