Grinding driving mechanism and electric coffee bean grinding machine
By using a grinding drive mechanism with elastic rings and L-shaped hooks in the electric coffee bean grinder, the problems of grinding shake and noise in the prior art are solved, achieving a more stable assembly and a better user experience.
Patent Information
- Application Number
- CN202420476922.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-12
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-03-12
AI Technical Summary
There is a matching gap between the convex buckle and L-shaped groove structures of the existing electric coffee bean grinder and the bean grinding module, resulting in large jitter and noise during grinding, affecting the user experience.
The grinding driving mechanism including an elastic ring and an L-shaped elastic hook buckle is adopted. Through the cooperation of the elastic external thread and the rigid internal thread, the interference hook structure of the L-shaped elastic hook buckle and the L-shaped rigid hook buckle is combined to achieve stable and detachable assembly, and the grinding shake is reduced through the elastic buffering effect of the elastic ring.
It effectively reduces the grinding shaking amplitude and noise, improves the assembly sealing of the drive module and the grinding module, and improves the user experience.
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electrical equipment for grinding coffee beans, in particular to a grinding drive mechanism and an electric coffee bean grinder with the grinding drive mechanism. Background Art
[0002] In order to be able to clean the grinding bean chamber, the existing electric coffee bean grinder arranges the drive module and the grinding bean module into a detachable assembly structure. The existing detachable assembly structure mainly comprises a detachable fit of a convex buckle and an L-shaped groove. The drive module and the grinding bean module of the existing electric coffee bean grinder are detachably assembled through the convex buckle and the L-shaped groove.
[0003] Since the convex buckle structure and L-shaped groove structure set between the drive module and the bean grinding module of the existing electric coffee bean grinder are both rigid and non-deformable structural features, in order to ensure the smooth assembly of the convex buckle structure and the L-shaped groove structure, the convex buckle structure and the L-shaped groove structure are clearance-matched. However, since there is a matching gap between the drive module and the bean grinding module through the assembly between the convex buckle and the L-shaped groove, the matching stability between the two is not good enough. Therefore, when the motor driving shaft of the drive module of the existing electric coffee bean grinder drives the driving grinding wheel to grind the coffee beans in the bean grinding chamber of the bean grinding module, there is a large shaking phenomenon between the drive module and the bean grinding module, and the grinding noise is large, which affects the user experience. Summary of the invention
[0004] In order to achieve the first purpose of the utility model, the utility model provides a grinding drive mechanism that can stably detachably assemble, reduce the grinding jitter amplitude, reduce grinding noise and improve assembly sealing, thereby enhancing the user experience.
[0005] In order to achieve the second purpose of the utility model, the utility model provides an electric coffee bean grinder with the above-mentioned grinding drive mechanism.
[0006] In order to achieve the first purpose of the utility model, the utility model provides a grinding drive mechanism, including a driving module and a grinding bean module, the driving module including a first shell and a motor, the motor is arranged in the first shell, the bottom end of the first shell is penetrated by a through hole, the driving shaft of the motor is rotatably located in the through hole, the grinding bean module includes a second shell, a rotating shaft and an elastic ring, the rotating shaft is rotatably supported in the second shell, the grinding end of the rotating shaft extends into the grinding bean cavity of the second shell, the grinding end is used for sleeve-engaging the moving grinding wheel, the driving end of the rotating shaft can be connected to the driving shaft, the outer peripheral wall of the elastic ring is provided with an elastic external thread, the inner peripheral surface of the opening end of the second shell away from the grinding bean cavity is provided with a rigid internal thread, the elastic ring is located in the opening end, the elastic external thread cooperates with the rigid internal thread, the inner peripheral wall of the elastic ring is protruded with a plurality of L-shaped elastic hooks, the plurality of L-shaped elastic hooks are evenly distributed in the circumferential direction of the elastic ring, and each L-shaped elastic hook is uniformly distributed in the circumferential direction of the elastic ring. The first elastic arm of the L-shaped elastic hook extends in the circumferential direction of the elastic ring, and the second elastic arm of each L-shaped elastic hook extends in the axial direction of the elastic ring, and the first elastic arm is away from the second elastic arm. One end of the first elastic arm is protruding toward the extension direction of the second elastic arm with an elastic hook, and an elastic groove is formed between the elastic hook, the first elastic arm and the second elastic arm. A plurality of L-shaped rigid hooks are protruding from the bottom end of the first shell, and an L-shaped rigid hook is adapted to an L-shaped elastic hook. The first rigid arm of each L-shaped rigid hook extends in the circumferential direction of the elastic ring, and the second rigid arm of each L-shaped rigid hook extends in the axial direction of the elastic ring, and one end of the first rigid arm is away from the second rigid arm. A rigid buckle is protruding toward the extension direction of the second rigid arm with a rigid buckle, and a rigid groove is formed between the rigid buckle, the first rigid arm and the second rigid arm, and the elastic buckle can be inserted into the rigid groove by interference fit, and the rigid buckle can be inserted into the elastic groove by interference fit.
[0007] It can be seen from the above scheme that the elastic ring of the grinding bean module of the grinding drive mechanism of the utility model cooperates with the rigid internal thread of the opening end of the second shell through the elastic external thread, and the elastic external thread of the elastic ring can be firmly engaged with the rigid internal thread of the second shell, so that the elastic ring is stably fastened in the opening end of the second shell. In addition, the bottom end of the first shell of the driving module of the grinding drive mechanism of the utility model is protrudingly provided with an L-shaped rigid hook, and the inner peripheral wall of the elastic ring of the grinding bean module of the grinding drive mechanism is protrudingly provided with an L-shaped elastic hook, and the elastic buckle of the L-shaped elastic hook can be inserted into the rigid groove of the L-shaped rigid hook by interference fit, and the rigid buckle of the L-shaped rigid hook can be inserted into the elastic groove of the L-shaped elastic hook by interference fit, so that the L-shaped elastic hook and the L-shaped rigid hook form a stable interference hook, so that the cooperation between the detachable L-shaped elastic hook and the L-shaped rigid hook is stable, and the sealing of the interference fit of the two is improved, and the elastic ring has an elastic buffering effect, which can greatly reduce the grinding vibration amplitude, thereby reducing the grinding noise, and thus improving the user experience.
[0008] A preferred solution is that the thread matching gap between the elastic external thread and the rigid internal thread is filled with adhesive.
[0009] A further solution is that a plurality of rigid ribs are protruding from the bottom end of the first shell, and one rigid rib is connected to the inner side surface of an L-shaped rigid hook in the radial direction of the rotating shaft.
[0010] A further solution is that the elastic buckle is arranged on an inclined surface away from the side of the first elastic arm and the second elastic arm; and / or, the rigid buckle is arranged on an inclined surface away from the side of the first rigid arm and the second rigid arm; and / or, the outer side surface of the first rigid arm in the radial direction of the rotating shaft is arranged on an inclined surface.
[0011] A further solution is that a support sleeve is provided in the second shell, and the rotating shaft is rotatably supported on the support sleeve through a waterproof sealed bearing.
[0012] A further solution is that the outer circumferential wall of the support sleeve is connected to the inner circumferential wall of the second shell body via a plurality of reinforcing plates, and the plurality of reinforcing plates are evenly distributed in the circumferential direction of the rotating shaft.
[0013] A further solution is that the drive module also includes a circuit board and a battery, the circuit board and the battery are respectively located in the first shell, and the circuit board is electrically connected to the battery and the motor respectively.
[0014] A further solution is that the battery is a storage battery, a charging head is provided on the circuit board, a through groove corresponding to the charging head is penetrated through the top of the first shell, and a mounting hole is penetrated through the top of the first shell, and a limiting groove is provided on the outer end surface of the top of the first shell corresponding to the through groove and the mounting hole; the drive module also includes an elastic seal, which can be inserted into the limiting groove through an interference fit, and an elastic connecting rod is protruding from the inner side surface of the first end of the elastic seal, and an elastic mushroom head is provided at the end of the elastic connecting rod, which passes through the mounting hole and can be buckled on the inner end surface of the top of the first shell, and a grabbing portion is protruding from the outer side surface of the second end of the elastic seal.
[0015] A further solution is that a push switch is provided on the circuit board, a key position hole corresponding to the push switch is formed through the top of the first shell, the driving module also includes a touch plate, the touch plate is connected to the key position hole through a plurality of arc-shaped elastic arms, and the plurality of arc-shaped elastic arms are evenly distributed in the circumferential direction of the touch plate; and / or, a plurality of light-emitting components are provided on the circuit board, the plurality of light-emitting components are arranged side by side, a plurality of light-emitting holes are formed through the top of the first shell, one light-emitting hole is arranged corresponding to one light-emitting component, the driving module also includes a light guide bar, the outer end surface of the top of the first shell is provided with positioning grooves corresponding to the plurality of light-emitting holes, the light guide bar is located in the positioning groove and extends in the side-by-side direction of the plurality of light-emitting components to cover the plurality of light-emitting components.
[0016] In order to achieve the second purpose of the utility model, the utility model provides an electric coffee bean grinder, including a grinding drive mechanism, and the grinding drive mechanism is the above-mentioned grinding drive mechanism. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural diagram of an embodiment of the electric coffee bean grinder of the utility model.
[0018] Figure 2 It is a cross-sectional view of an embodiment of the electric coffee bean grinder of the utility model.
[0019] Figure 3 It is an exploded view of the grinding drive mechanism in the embodiment of the electric coffee bean grinder of the utility model.
[0020] Figure 4 It is a structural diagram of the bean grinding module in the embodiment of the electric coffee bean grinder of the utility model.
[0021] Figure 5 It is a cross-sectional view of a bean grinding module in an embodiment of the electric coffee bean grinder of the utility model.
[0022] Figure 6 It is a structural diagram of an elastic ring in an embodiment of the electric coffee bean grinder of the utility model.
[0023] Figure 7 It is a cross-sectional view of the cooperation between the L-shaped elastic hook and the L-shaped rigid hook in the embodiment of the electric coffee bean grinder of the utility model.
[0024] Figure 8 It is a structural diagram of a driving module in an embodiment of the electric coffee bean grinder of the utility model.
[0025] Fig. 9 It is an exploded structural diagram of a drive module in an embodiment of the electric coffee bean grinder of the utility model.
[0026] Fig.10 It is a cross-sectional view from a first perspective of a driving module in an embodiment of the electric coffee bean grinder of the utility model.
[0027] Fig.11 It is a cross-sectional view from a second viewing angle of the driving module in the embodiment of the electric coffee bean grinder of the utility model.
[0028] Fig.12 It is a partial structural exploded view of a driving module in an embodiment of the electric coffee bean grinder of the utility model.
[0029] Fig.13 It is a partial structural sectional view of a driving module in an embodiment of the electric coffee bean grinder of the utility model.
[0030] Fig.14It is a structural diagram of an elastic sealing member in an embodiment of the electric coffee bean grinder of the utility model.
[0031] Fig.15 This is a first-view structural diagram of the upper cover in an embodiment of the electric coffee bean grinder of the utility model.
[0032] Fig.16 This is a second viewing angle structural diagram of the upper cover in the embodiment of the electric coffee bean grinder of the utility model.
[0033] Fig.17 It is a structural diagram of the lower cover in an embodiment of the electric coffee bean grinder of the utility model.
[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION
[0035] See also Figures 1 to 17The present embodiment discloses an electric coffee bean grinder, including a grinding drive mechanism 10 and a grinding module, wherein the grinding module includes a movable grinding wheel 13 and a fixed grinding wheel 14. The grinding drive mechanism 10 of the present embodiment includes a driving module 11 and a bean grinding module 12, wherein the driving module 11 includes a first housing 111 and a motor 117, wherein the motor 117 is disposed in the first housing 111, wherein a through hole 11131 is formed through the bottom end of the first housing 111, wherein a driving shaft 1171 of the motor 117 is rotatably disposed in the through hole 11131, wherein the bean grinding module 12 includes a second housing 121 and a rotating shaft 122, wherein the rotating shaft 122 is rotatably supported in the second housing 121, wherein the rotating shaft 1171 is The grinding end of the rotating shaft 122 extends into the bean grinding chamber 125 of the second housing 121, and the grinding end of the rotating shaft 122 is used to sleeve the moving grinding wheel 13, and the fixed grinding wheel 14 is fixedly arranged in the bean grinding chamber 125 of the second housing 121. Since the moving grinding wheel 13 is located in the axial hole of the fixed grinding wheel 14, the moving grinding wheel 13 is driven to rotate by the rotating shaft 122 driven by the motor 117, so that the coffee beans in the bean grinding chamber 125 can be ground, and the driving end of the rotating shaft 122 of this embodiment can be connected with the driving shaft 1171 of the motor 117. Specifically, the bean grinding module 12 of this embodiment also includes an elastic ring 124, and the outer peripheral wall of the elastic ring 124 is provided with an elastic external thread 1241, and the inner peripheral surface of the opening end of the second housing 121 away from the bean grinding chamber 125 is provided with a rigid internal thread 1211, and the elastic ring 124 is located in the opening end of the second housing 121, and the elastic external thread 1241 is matched with the rigid internal thread 1211. At the same time, the inner circumferential wall of the elastic ring 124 of this embodiment is protrudingly provided with a plurality of L-shaped elastic hooks 1242, and the plurality of L-shaped elastic hooks 1242 are evenly distributed in the circumferential direction of the elastic ring 124, and the first elastic arm 12421 of each L-shaped elastic hook 1242 extends in the circumferential direction of the elastic ring 124, and the second elastic arm 12422 of each L-shaped elastic hook 1242 extends in the axial direction of the elastic ring 124, and an elastic buckle 12423 is protruding from one end of the first elastic arm 12421 away from the second elastic arm 12422 toward the extension direction of the second elastic arm 12422, and an elastic groove 12424 is formed between the elastic buckle 12423, the first elastic arm 12421 and the second elastic arm 12422.In addition, in this embodiment, a plurality of L-shaped rigid hooks 118 are protruding from the bottom end of the first shell 111, and one L-shaped rigid hook 118 is matched with an L-shaped elastic hook 1242. The first rigid arm 1182 of each L-shaped rigid hook 118 extends in the circumferential direction of the elastic ring 124, and the second rigid arm 1181 of each L-shaped rigid hook 118 extends in the axial direction of the elastic ring 124. A rigid buckle 1183 is protruding from one end of the first rigid arm 1182 away from the second rigid arm 1181 toward the extension direction of the second rigid arm 1181, and a rigid groove 1184 is formed between the rigid buckle 1183, the first rigid arm 1182 and the second rigid arm 1181. The elastic buckle 12423 can be inserted into the rigid groove 1184 by interference fit, and the rigid buckle 1183 can be inserted into the elastic groove 12424 by interference fit.
[0036] The elastic ring 124 of the bean grinding module 12 of the grinding drive mechanism 10 of this embodiment cooperates with the rigid internal thread 1211 of the opening end of the second shell 121 through the elastic external thread 1241. The elastic external thread 1241 of the elastic ring 124 can be firmly engaged with the rigid internal thread 1211 of the second shell 121, so that the elastic ring 124 is stably fastened in the opening end of the second shell 121. In addition, the bottom end of the first shell 111 of the driving module 11 of the grinding drive mechanism 10 of this embodiment is protrudingly provided with an L-shaped rigid hook 118, and the inner peripheral wall of the elastic ring 124 of the bean grinding module 12 of the grinding drive mechanism 10 is protrudingly provided with an L-shaped elastic hook 1242. The elastic buckle 12423 of the L-shaped elastic hook 1242 can be inserted into the rigid groove 1184 of the L-shaped rigid hook 118 through interference fit, and the rigid buckle 1183 of the L-shaped rigid hook 118 can be inserted into the rigid groove 1184 of the L-shaped rigid hook 118 through interference fit. It is embedded in the elastic groove 12424 of the L-shaped elastic hook 1242, so that a stable interference fit is formed between the L-shaped elastic hook 1242 and the L-shaped rigid hook 118, so that the fit between the detachable L-shaped elastic hook 1242 and the L-shaped rigid hook 118 is stable, and the sealing of the interference fit between the two is improved. At the same time, the elastic ring 124 has an elastic buffering effect, which can greatly reduce the grinding jitter amplitude, thereby reducing the grinding noise, and then improving the user experience.
[0037] In order to further ensure that the elastic ring 124 is stably fastened in the open end of the second shell 121, the thread fitting gap between the elastic external thread 1241 of the elastic ring 124 and the rigid internal thread 1211 of the second shell 121 in this embodiment is filled with adhesive, thereby preventing the elastic ring 124 from loosening relative to the open end of the second shell 121 and affecting the stability of the hooking between the L-shaped elastic hook 1242 and the L-shaped rigid hook 118.
[0038] Combination Figures 4 to 6In this embodiment, a support sleeve 1212 is provided in the second housing 121, and the rotating shaft 122 is rotatably supported on the support sleeve 1212 through a waterproof sealing bearing 123, so that when cleaning the grinding chamber 125 of the second housing 121, it is possible to avoid contamination of the waterproof sealing bearing 123 that supports the rotation of the rotating shaft 122, thereby ensuring the reliability and stability of the rotation of the rotating shaft 122. In addition, in order to stably support the rotation of the rotating shaft 122, the outer peripheral wall of the support sleeve 1212 of this embodiment is connected to the inner peripheral wall of the second housing 121 through a plurality of reinforcing plates 1213, and the plurality of reinforcing plates 1213 are evenly distributed in the circumferential direction of the rotating shaft 122, so as to evenly support the rotating shaft 122 in the circumferential direction of the rotating shaft 122.
[0039] Combination Figures 7 to 17 In this embodiment, a plurality of rigid ribs 1187 are protruding from the bottom end of the first shell 111, and one rigid rib 1187 is connected to the inner side surface of an L-shaped rigid hook 118 in the radial direction of the rotating shaft 122, thereby strengthening the structural rigidity of the L-shaped rigid hook 118, and making the fit between the detachably assembled L-shaped elastic hook 1242 and the L-shaped rigid hook 118 more stable and reliable.
[0040] In order to improve the smoothness of assembly between the L-shaped elastic hook 1242 and the L-shaped rigid hook 118, the elastic hook 12423 of this embodiment is arranged at an inclined surface on the side 12425 away from the first elastic arm 12421 and the second elastic arm 12422, the rigid hook 1183 of this embodiment is arranged at an inclined surface on the side 1185 away from the first rigid arm 1182 and the second rigid arm 1181, and the outer side surface 1186 of the first rigid arm 1182 of this embodiment in the radial direction of the rotating shaft 122 is arranged at an inclined surface.
[0041] Among them, the driving module 11 of this embodiment also includes a circuit board 115 and a battery 1115, and the circuit board 115 and the battery 1115 are respectively located in the first shell 111, and the circuit board 115 is electrically connected to the battery 1115 and the motor 117 respectively, so that the operation of the motor 117 is controlled by the circuit board 115. Specifically, the battery 1115 of this embodiment is a storage battery 1115, and a charging head 1152 is arranged on the circuit board 115. A through groove 11123 corresponding to the charging head 1152 is penetrated through the top of the first shell 111, and a mounting hole 11124 is penetrated through the top of the first shell 111. A limiting groove 11125 is formed on the outer end surface of the top of the first shell 111 corresponding to the through groove 11123 and the mounting hole 11124. The driving module 11 of this embodiment also includes an elastic seal 114, which can be inserted into the limiting groove 11125 by interference fit, and an elastic connecting rod 1142 is protrudingly provided on the inner side surface of the first end of the elastic seal 114, and an elastic mushroom head 1143 is provided on the end of the elastic connecting rod 1142. The elastic mushroom head 1143 passes through the mounting hole 11124 and can be buckled on the inner end surface of the top of the first shell 111, and a grabbing portion 1141 is protrudingly provided on the outer side surface of the second end of the elastic seal 114. When the battery 1115 needs to be charged, the grasping portion 1141 on the elastic seal 114 is grasped to pull the elastic seal 114 out of the limiting groove 11125, because the elastic mushroom head 1143 on the end of the elastic connecting rod 1142 on the elastic seal 114 is snapped on the inner end surface of the top end of the first shell 111, so that the elastic seal 114 is hung on the first shell 111; when charging is completed, the elastic seal 114 is interference fit into the limiting groove 11125 to seal the charging head 1152 to prevent the charging head 1152 from being contaminated and affecting the charging performance.
[0042] In addition, a key switch 1151 is provided on the circuit board 115 of this embodiment, and a key hole 11126 corresponding to the key switch 1151 is provided through the top of the first shell 111, and the driving module 11 also includes a touch plate 11127, which is connected to the key hole 11126 through a plurality of arc-shaped elastic arms 11128, and the plurality of arc-shaped elastic arms 11128 are evenly distributed in the circumferential direction of the touch plate 11127, so that the touch plate 11127 can be movably supported at the key hole 11126, so that the touch plate 11127 can be pressed to touch the key switch 1151 on the circuit board 115 to control the operation of the electric coffee bean grinder, and because the arc-shaped elastic arms 11128 have excellent elasticity, the touch plate 11127 can be ensured to be stably reset. In order to demonstrate the function of the touch plate 11127, a key indicator plate 113 is provided on the outer side of the touch plate 11127 of this embodiment.
[0043] In addition, in this embodiment, a plurality of light-emitting components 1153 are arranged on the circuit board 115, and the plurality of light-emitting components 1153 are arranged side by side. A plurality of light-emitting holes 111210 are opened through the top of the first shell body 111, and one light-emitting hole 111210 is arranged corresponding to one light-emitting component 1153. The driving module 11 also includes a light guide bar 112, and a positioning groove 11129 is opened on the outer end surface of the top of the first shell body 111 corresponding to the plurality of light-emitting holes 111210. The light guide bar 112 is located in the positioning groove 11129 and extends in the side-by-side direction of the plurality of light-emitting components 1153 to cover the plurality of light-emitting components 1153, so that the working status of the electric coffee bean grinder can be quickly identified by the bright color displayed by the light guide bar 112.
[0044] Specifically, the first shell 111 of this embodiment includes a shell cover 1111, an upper cover 1112 and a lower cover 1113. The upper cover 1112 covers the top opening of the shell cover 1111. The through groove 11123, the mounting hole 11124, the limit groove 11125, the key hole 11126, the light exit hole 111210 and the positioning groove 11129 are arranged on the upper cover 1112. The lower cover 1113 covers the bottom opening of the shell cover 1111. The L-shaped rigid hook 118 and the through hole 11131 are arranged on the lower cover 1113, so that the circuit board 115, the battery 1115 and the motor 117 are arranged in the accommodating cavity surrounded by the shell cover 1111, the upper cover 1112 and the lower cover 1113. In order to improve the sealing of the accommodating cavity, a first sealing ring 116 is arranged between the outer peripheral wall of the upper cover 1112 of this embodiment and the inner peripheral wall of the top opening of the shell cover 1111, and a second sealing ring 1110 is arranged between the outer peripheral wall of the lower cover 1113 of this embodiment and the inner peripheral wall of the lower end opening of the shell cover 1111. Among them, the inner peripheral wall of the shell cover 1111 of this embodiment is protrudingly provided with a positioning rib 11111, the inner side surface of the upper cover 1112 close to the lower cover 1113 is provided with a first card groove 11121, and the inner side surface of the lower cover 1113 close to the upper cover 1112 is provided with a second card groove 11132, and the two ends of the positioning rib 11111 are respectively inserted into the first card groove 11121 and the second card groove 11132, and the lower cover 1113 and the upper cover 1112 are locked by screws 1116, so that the shell cover 1111, the lower cover 1113 and the upper cover 1112 are fastened to form the first shell 111. In addition, in this embodiment, the lower cover 1113 is provided with a first mounting groove 11133 on the inner side surface close to the upper cover 1112, and the lower end of the motor 117 is located in the first mounting groove 11133, and the upper cover 1112 is provided with a second mounting groove 11122 on the inner side surface close to the lower cover 1113, and the upper end of the motor 117 is provided with a limit column 1172 protruding from the upper end, and the limit column 1172 is located in the second mounting groove 11122, so as to fix the motor 117 in the accommodating cavity. In order to further improve the sealing performance of the accommodating cavity, a third sealing ring 119 is provided between the outer peripheral wall of the lower end of the motor 117 and the groove peripheral wall of the first mounting groove 11133. In addition, in this embodiment, the lower cover 1113 is provided with a third mounting groove 11134 on the inner side surface close to the upper cover 1112, and the battery 1115 is located in the third mounting groove 11134. In addition, in this embodiment, the circuit board 115 is located between the upper cover 1112 and the upper end of the motor 117. In order to improve the appearance, a decorative plate 1114 is provided on the outer side of the lower cover 1113 away from the upper cover 1112 in this embodiment.
[0045] The above embodiments are only preferred examples of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structure, features and principles of the present invention should be included in the scope of the present invention patent application.
Claims
1. A grinding drive mechanism, comprising a driving module and a bean grinding module, wherein the driving module comprises a first housing and a motor, wherein the motor is arranged in the first housing, wherein a through hole is formed through the bottom end of the first housing, wherein a driving shaft of the motor is rotatably located in the through hole, wherein the bean grinding module comprises a second housing and a rotating shaft, wherein the rotating shaft is rotatably supported in the second housing, wherein a grinding end of the rotating shaft extends into a bean grinding cavity of the second housing, wherein the grinding end is used for sleeve-engaging a moving grinding wheel, and wherein the driving end of the rotating shaft can be butted against the driving shaft; It is characterized in that The bean grinding module further comprises an elastic ring, the outer peripheral wall of the elastic ring is provided with an elastic external thread, the inner peripheral surface of the opening end of the second shell away from the bean grinding chamber is provided with a rigid internal thread, the elastic ring is located in the opening end, and the elastic external thread cooperates with the rigid internal thread; The inner circumferential wall of the elastic ring is protruded with a plurality of L-shaped elastic hooks, and the plurality of L-shaped elastic hooks are evenly distributed in the circumferential direction of the elastic ring. The first elastic arm of each L-shaped elastic hook extends in the circumferential direction of the elastic ring, and the second elastic arm of each L-shaped elastic hook extends in the axial direction of the elastic ring. An elastic buckle is protruded toward the extension direction of the second elastic arm at one end of the first elastic arm away from the second elastic arm, and an elastic groove is formed between the elastic buckle, the first elastic arm and the second elastic arm. A plurality of L-shaped rigid hooks are protruding from the bottom end of the first shell, and one of the L-shaped rigid hooks is adapted to one of the L-shaped elastic hooks. The first rigid arm of each of the L-shaped rigid hooks extends in the circumferential direction of the elastic ring, and the second rigid arm of each of the L-shaped rigid hooks extends in the axial direction of the elastic ring. A rigid buckle is protruding from one end of the first rigid arm away from the second rigid arm toward the extension direction of the second rigid arm, and a rigid groove is formed between the rigid buckle, the first rigid arm and the second rigid arm, the elastic buckle can be embedded in the rigid groove by interference fit, and the rigid buckle can be embedded in the elastic groove by interference fit.
2. The grinding drive mechanism according to claim 1, characterized in that: The thread matching gap between the elastic external thread and the rigid internal thread is filled with adhesive.
3. The grinding drive mechanism according to claim 1, characterized in that: A plurality of rigid ribs are protruding from the bottom end of the first shell, and one of the rigid ribs is connected to an inner side surface of the L-shaped rigid hook in the radial direction of the rotating shaft.
4. The grinding drive mechanism according to claim 1, characterized in that: The side surface of the elastic buckle away from the first elastic arm and the second elastic arm is arranged in an inclined surface; And / or, the side surface of the rigid buckle away from the first rigid arm and the second rigid arm is arranged in an inclined surface; And / or, the first rigid arm is arranged on an outer side surface in the radial direction of the rotating shaft in the form of an inclined surface.
5. The grinding drive mechanism according to claim 1, characterized in that: A support sleeve is arranged in the second shell, and the rotating shaft is rotatably supported on the support sleeve through a waterproof sealed bearing.
6. The grinding drive mechanism according to claim 5, characterized in that: The outer circumferential wall of the support sleeve is connected to the inner circumferential wall of the second shell through a plurality of reinforcing plates, and the plurality of reinforcing plates are evenly distributed in the circumferential direction of the rotating shaft.
7. The grinding drive mechanism according to any one of claims 1 to 6, characterized in that: The driving module also includes a circuit board and a battery. The circuit board and the battery are respectively located in the first shell, and the circuit board is electrically connected to the battery and the motor respectively.
8. The grinding drive mechanism according to claim 7, characterized in that: The battery is a storage battery, a charging head is provided on the circuit board, a through slot corresponding to the charging head is formed through the top of the first shell, a mounting hole is formed through the top of the first shell, and a limiting slot is formed on the outer end surface of the top of the first shell corresponding to the through slot and the mounting hole; The driving module also includes an elastic seal, which can be inserted into the limiting groove by interference fit, and an elastic connecting rod is protruding from the inner side surface of the first end of the elastic seal, and an elastic mushroom head is provided at the end of the elastic connecting rod. The elastic mushroom head passes through the mounting hole and can be snapped onto the inner end surface of the top end of the first shell, and a grabbing portion is protruding from the outer side surface of the second end of the elastic seal.
9. The grinding drive mechanism according to claim 7, characterized in that: The circuit board is provided with a key switch, the top of the first shell is penetrated with a key hole corresponding to the key switch, the driving module also includes a touch plate, the touch plate is connected to the key hole through a plurality of arc-shaped elastic arms, and the plurality of arc-shaped elastic arms are evenly distributed in the circumferential direction of the touch plate; And / or, a plurality of light-emitting components are arranged on the circuit board, and the plurality of light-emitting components are arranged side by side. A plurality of light-emitting holes are formed through the top end of the first shell, and one light-emitting hole is formed corresponding to one of the light-emitting components. The driving module also includes a light guide bar, and a positioning groove is formed on the outer end surface of the top end of the first shell corresponding to the plurality of light-emitting holes. The light guide bar is located in the positioning groove and extends in the side-by-side direction of the plurality of light-emitting components to cover the plurality of light-emitting components.
10. An electric coffee bean grinder, comprising a grinding drive mechanism, characterized in that: The grinding drive mechanism is the grinding drive mechanism described in any one of claims 1 to 9 above.