Bean grinder and motor mounting rack

Abstract

The utility model relates to the field of coffee bean processing equipment, in particular to a bean grinder and a motor mounting frame. The motor mounting rack comprises an inner supporting ring, the inner side wall of the inner supporting ring is provided with a positioning block, the positioning block is provided with a mounting disc used for mounting a motor assembly, and a space is reserved between the mounting disc and the inner supporting ring. The mounting disc is arranged on the inner supporting ring through the positioning blocks, so that a space is reserved between the mounting disc and the inner supporting ring, and an extension piece of a lifting rod of the bean grinder can penetrate through the space. As the extension sheet can abut against the positioning block in the rotating direction, and the positioning block can limit the lifting rod to prevent the lifting rod from rotating, when the adjusting knob is rotated, the lifting rod can rotate relative to the adjusting gear and ascend and descend under the action of threads, the movable grinding disc moving along with the lifting rod is controlled to ascend and descend, and the gap between the movable grinding disc and the fixed grinding disc is adjusted; and the thickness of discharged powder can be adjusted. In the process, the positions of the motor mounting rack and the motor do not need to be moved.

Description

Technical Field

[0001] The present application relates to the field of coffee bean processing equipment, and in particular to a coffee bean grinder and a motor mounting bracket. Background Art

[0002] The existing electric coffee grinder drives the movable grinding disc to rotate through the motor, and grinds the coffee beans into coffee powder with the fixed grinding disc. In order to meet the needs of consumers for different coarseness of freshly ground coffee powder, the coffee grinder is usually designed with an adjustable structure for the coarseness of the powder.

[0003] There are two types of adjustment for the coarseness of the powder output of existing grinders: one is a downward adjustment grinder, which uses a knob threadedly connected to the mandrel to adjust the position of the movable grinding disc. The knob is set below the movable grinding disc and abuts against the movable grinding disc. The height is adjusted by rotating the knob to change the gap between the movable grinding disc and the fixed grinding disc, thereby achieving adjustment and control of the powder output coarseness. However, since this adjustment method requires the powder receiving box to be opened every time adjustment is made, and the knob will inevitably be touched during the adjustment process, and the movable grinding disc and the fixed grinding disc may also be touched, from the perspective of food processing hygiene, it needs to be cleaned after each adjustment, so the adjustment operation is more inconvenient.

[0004] The other type is the upward adjustment type grinder, which is connected to the outer shell through a knob on the top. By turning the knob, the motor mounting frame, the motor, the mandrel connected to the motor, and the movable grinding disc installed on the mandrel move together to adjust the gap between the movable grinding disc and the fixed grinding disc, so as to adjust the coarseness of the powder output of the grinder. However, since this method will drive the motor mounting frame and the motor to move as a whole, the wear between the motor mounting frame and the contact parts when the motor moves, and the position offset caused by multiple movements of the motor, will affect the matching gap between the movable grinding disc and the fixed grinding disc, resulting in unstable powder output.

[0005] Therefore, in order to conveniently adjust the powder coarseness of the grinder and keep the powder coarseness stable, it is necessary to provide an upward-adjustable grinder, so that when the grinder adjusts the matching gap between the movable grinding disc and the fixed grinding disc, it is not necessary to move the motor mounting frame and the position of the motor. At present, the motor mounting frame of the existing grinders either moves with the adjustment or is fixed to the shell and cannot move, but at the same time, it is also impossible to adjust the components, so it is necessary to design a new motor mounting frame. Utility Model Content

[0006] In a first aspect, in order to be applicable to an upward-adjustable coffee grinder that does not require moving the motor mounting frame and the motor position, the present application provides a motor mounting frame.

[0007] A motor mounting frame comprises an inner support ring, wherein a positioning block is arranged on the inner side wall of the inner support ring, a mounting plate for mounting a motor assembly is arranged on the positioning block, and a space is left between the mounting plate and the inner support ring.

[0008] By adopting the above technical solution, a mounting plate is arranged on the inner support ring through a positioning block, so that a space is left between the mounting plate and the inner support ring, so that the extension piece of the lifting rod of the grinder can pass through the space. Since the extension piece will abut against the positioning block in the direction of rotation, the positioning block can limit the lifting rod so that it cannot rotate. Therefore, when the adjustment knob is turned, the lifting rod will rotate relative to the adjustment gear and be lifted and lowered under the action of the thread, thereby controlling the lifting and lowering of the movable grinding disc that moves with the lifting rod, adjusting the gap between the movable grinding disc and the fixed grinding disc, and adjusting the coarseness of the powder output. In this process, the position of the motor mounting frame and the motor does not need to be moved.

[0009] Preferably, at least two positioning blocks are provided and both are connected to the mounting plate, and the positioning blocks extend along the axial direction of the inner support ring.

[0010] By adopting the above technical solution, the positioning block is arranged to extend axially along the inner support ring, so that there can be a longer contact surface between the positioning block and the extension piece of the lifting rod, thereby avoiding local contact causing eccentricity of the lifting rod. At the same time, the larger contact surface can avoid damage to parts due to large force pressure.

[0011] Preferably, the mounting plate is circular, and a square positioning groove is formed on the upper side of the mounting plate. The center of the positioning groove is opposite to the center of the mounting plate, and the four corners of the positioning groove extend beyond the mounting plate to form a broken edge structure. The bottom of the positioning groove is formed with a central through hole that passes through the mounting plate and four peripheral through holes evenly distributed around the central through hole.

[0012] By adopting the above technical solution, the motor assembly is positioned by means of the positioning groove, the central through hole structure is used to pass the output shaft of the motor assembly, and the peripheral through holes are used to cooperate with bolts to fix the motor assembly.

[0013] Preferably, the inner surface of the positioning block is a concave arc surface coaxial with the inner support ring, the top of the positioning block is formed with a first inclined guide surface, and the first inclined guide surface is inclined from top to bottom toward the center of the inner support ring, and the inner side wall of the positioning block near the upper end is formed with an avoidance groove, and the inner side wall of the avoidance groove is formed with a second inclined guide surface inclined from top to bottom toward the center of the inner support ring near the upper end, and a square first through hole is formed on the inner side wall of the avoidance groove at a position below the second inclined guide surface, and a second through hole is formed on the inner side wall of the avoidance groove at a position below the first through hole, the second through hole includes two longitudinal holes near the two side walls of the avoidance groove and a transverse hole connecting the two longitudinal holes at the lower end of the longitudinal hole, the inner side wall of the inner support ring forms a deformable and movable block at the lower end under the cutting of the second through hole, and the inner side wall of the lower end of the block is inclined from top to bottom toward the center of the inner support ring.

[0014] By adopting the above technical solution, the concave arc surface is used to cooperate in positioning the motor assembly. The first inclined guide surface and the second inclined guide surface cooperate to facilitate the motor assembly to enter the inner support ring when it is installed. The setting of the second through hole cooperates to form a deformable and movable block structure, so that when the motor assembly is installed, the protrusion on the motor assembly will squeeze the block outward and deform it and push it away. The block will then reset and cooperate with the protrusion on the motor assembly to fix the motor assembly, so that the motor assembly will not move at will after the installation is completed, making it convenient to adjust the output shaft position of the motor assembly, and the motor assembly will not move during the process of locking the position of the motor assembly with bolts after the adjustment is completed.

[0015] Preferably, the lower edge of the first through hole on the positioning block adjacent to the first connection portion is lower than the upper edge of the second through hole, and the lower edge of the first through hole on the positioning block adjacent to the second connection portion is higher than the upper edge of the second through hole.

[0016] By adopting the above technical solution, when the lower edge of the first through hole is lower than the upper edge of the second through hole, the upper end of the block structure will form a thinner structure, so that the block has a stronger deformation ability, which is convenient for installing the motor assembly. When the lower edge of the first through hole is higher than the upper edge of the second through hole, the block is more difficult to deform, and the positioning effect after the motor assembly is installed is stronger.

[0017] Preferably, it also includes an outer support ring located outside the inner support ring, and a first connecting part and a second connecting part connecting the inner support ring and the outer support ring, and the area between the inner support ring and the outer support ring where the first connecting part and the second connecting part are not set forms a material dropping channel.

[0018] By adopting the above technical solution, a feeding channel is formed between the inner support ring and the outer support ring so that the coffee beans can enter the working area of ​​the movable grinding disc and the fixed grinding disc for grinding from the feeding channel.

[0019] Preferably, the outer support ring has a hole at the position of the first connecting part as a battery mounting slot, and has a hole at the position of the second connecting part as a control module mounting slot; the side of the outer support ring is formed with a wire passing slot connecting from the battery mounting slot to the control module mounting slot, the wire passing slot extends in a horizontal direction, and the lower side of the wire passing slot close to one end of the battery mounting slot forms a downward curved surface, the upper end of the outer support ring is evenly distributed around the circumference with four protrusions, each of which is formed with a large circular hole and a small circular hole located above the large circular hole.

[0020] By adopting the above technical solution, the battery mounting slot is used to install the battery assembly, the control module mounting slot is used to install the control module assembly, the wire groove is used to connect the wires of the battery assembly to the control module assembly, and the large circular hole and the small circular hole are used for elastic abutments.

[0021] Preferably, the first connecting portion includes a first side connecting plate constituting the left and right side walls of the battery mounting groove, a first upper connecting plate constituting the upper wall of the battery mounting groove, a first lower connecting plate constituting the lower wall of the battery mounting groove, and a first bottom plate formed by the downward extension of the inner support ring portion and constituting a part of the bottom surface of the battery mounting groove; the first upper connecting plate is horizontally arranged, and the upper end surface of the first upper connecting plate is formed with first reinforcing ribs near both sides, and the first reinforcing ribs are connected to the inner support ring and the outer support ring; the middle part of the first upper connecting plate is formed with a cylindrical gear seat, a gear shaft located above the gear seat, and a first guide cone located above the gear shaft, and the outer diameter of the gear shaft is smaller than the outer diameter of the gear seat; A guide vertebra is a conical structure that is small at the top and large at the bottom, and the outer diameter of the lower end of the first guide vertebra is smaller than the outer diameter of the gear shaft, and an internal threaded hole is formed at the center of the upper end surface of the first guide vertebra; the upper end surface of the gear seat is flush with the upper end surface of the outer support ring, and the side surface of the gear seat is connected to the outer support ring; a horizontal battery baffle is formed on the first bottom plate, and charging module mounting columns are formed at the connection between the first bottom plate and the first side connecting plates on both sides, the position of the charging module mounting columns is lower than the position of the battery baffle, and a threaded hole is formed in the center of each charging module mounting column; the two first side connecting plates are both formed with charging module baffles near the lower ends, and a charging module positioning column is formed in the middle of the first lower connecting plate.

[0022] By adopting the above technical solution, the transmission gear is installed through the gear shaft, and the first guide cone is used to cooperate with the alignment and fixation of the main housing and the motor mounting frame. The battery baffle is used to limit the battery from moving down and occupying the space of the charging module, and the charging module mounting column is used to cooperate with the bolt to install and fix the charging module. The charging module baffle and the charging module positioning column can play a role in limiting the position of the charging module.

[0023] Preferably, the second connecting portion includes a second side connecting plate constituting the left and right side walls of the control module mounting slot, a second upper connecting plate constituting the upper wall of the control module mounting slot, a second lower connecting plate constituting the lower wall of the control module mounting slot, and a second bottom plate formed by extending downwardly from the inner support ring portion and constituting a part of the bottom surface of the control module mounting slot; the second upper connecting plate is horizontally arranged, and the upper end surface of the second upper connecting plate is formed with second reinforcing ribs near both sides, and the second reinforcing ribs are connected to the inner support ring and the outer support ring; a connecting column is formed in the middle part of the second upper connecting plate, and the side surface of the connecting column is connected to the outer support ring, and the upper end of the connecting column is formed with a second guide cone, and the second guide cone is a conical structure with a small top and a large bottom, and the second guide cone The outer diameter of the lower end is smaller than the outer diameter of the connecting column, and an internal threaded hole is formed at the center of the upper end surface of the second guide cone; a horizontally extending upper control module baffle is formed at a position between the first through hole and the second through hole in the control module mounting groove, a horizontally extending middle control module baffle is formed at a middle position in the control module mounting groove, a horizontally extending lower control module baffle is formed near the lower part of the control module mounting groove, and a longitudinally extending control module longitudinal baffle is connected to the middle of the middle control module baffle and the lower control module baffle; an upper control module mounting column is formed at a position between the upper control module baffle and the middle control module baffle on the bottom surface of the control module mounting groove, and a lower control module mounting column is formed at a position near the lower end of the bottom surface of the control module mounting groove.

[0024] By adopting the above technical solution, the second guide cone is used to cooperate with the alignment and fixation of the main engine housing and the motor mounting frame. The upper control module baffle, the middle control module baffle, the lower control module baffle, and the control module longitudinal baffle are used to limit the position of the control module. The upper control module mounting column and the lower control module mounting column are used to cooperate with the bolts to fix the control module.

[0025] In a second aspect, the present application provides a coffee bean grinder, which adopts the following technical solution:

[0026] A coffee bean grinder comprises a main body shell and a powder receiving box arranged below the main body shell, wherein the main body shell is provided with the above-mentioned battery mounting frame.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. A mounting plate is arranged on the inner support ring through a positioning block, so that a space is left between the mounting plate and the inner support ring, so that the extension piece of the lifting rod of the grinder can pass through the space. Since the extension piece will abut against the positioning block in the rotation direction, the positioning block can limit the lifting rod so that it cannot rotate. Therefore, when the adjustment knob is turned, the lifting rod will rotate relative to the adjustment gear and be lifted and lowered under the action of the thread, thereby controlling the lifting and lowering of the movable grinding disc that moves with the lifting rod, adjusting the gap between the movable grinding disc and the fixed grinding disc, and realizing the adjustment of the coarseness of the powder output. In this process, the position of the motor mounting frame and the motor does not need to be moved.

[0029] 2. There can be a longer contact surface between the positioning block and the extension piece of the lifting rod to avoid partial contact causing eccentricity of the lifting rod. At the same time, a larger contact surface can prevent damage to parts due to high force pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural diagram of the motor mounting frame;

[0031] Figure 2 is a schematic cross-sectional view of a motor mounting frame;

[0032] Figure 3 It is a cross-sectional diagram of the grinder;

[0033] Figure 4 It is a structural diagram of the transmission part involved in adjusting the gap between the fixed grinding disc and the movable grinding disc of the coffee grinder.

[0034] Explanation of the reference numerals: 1. inner support ring; 2. outer support ring; 3. first connecting part; 4. second connecting part; 5. positioning block; 6. mounting plate; 7. positioning groove; 8. central through hole; 9. peripheral through hole; 10. first inclined guide surface; 11. avoidance groove; 12. second inclined guide surface; 13. first through hole; 14. second through hole; 15. clamping block; 16. battery mounting groove; 17. control module mounting groove; 18. countersunk hole; 19. wire groove; 20. protrusion; 21. large circular hole; 22. small circular hole; 23. first side connecting plate; 24. first upper connecting plate; 25. first lower connecting plate; 26. first bottom plate; 27. first reinforcing rib; 28. gear seat; 29. ​​gear shaft; 30. first guide cone; 31. battery baffle; 32. charging module mounting column; 33. charging Module baffle; 34, charging module positioning column; 35, second side connecting plate; 36, second upper connecting plate; 37, second lower connecting plate; 38, second bottom plate; 39, second reinforcing rib; 40, connecting column; 41, second guide vertebra; 42, upper control module baffle; 43, middle control module baffle; 44, lower control module baffle; 45, control module longitudinal baffle; 46, upper control module mounting column; 47, lower control module mounting column; 48, mainframe housing; 49, powder receiving box; 50, battery assembly; 51, control module assembly; 52, motor assembly; 53, output shaft; 54, driving rod; 55, movable grinding disc; 56, fixed grinding disc; 57, adjusting knob; 58, elastic abutment; 59, transmission gear; 60, adjusting gear; 61, lifting rod; 62, extension sheet. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-4 This application is described in further detail.

[0036] The embodiments of the present application provide a coffee bean grinder and a motor mounting bracket.

[0037] Embodiment 1:

[0038] like Figure 1 As shown, the motor mounting frame includes an inner support ring 1, an outer support ring 2 located outside the inner support ring 1, and a first connecting portion 3 and a second connecting portion 4 respectively located on both sides of the inner support ring 1 to connect the inner support ring 1 and the outer support ring 2. The inner support ring 1, the outer support ring 2, the first connecting portion 3 and the second connecting portion 4 are all integrally injection molded, and the area between the inner support ring 1 and the outer support ring 2 where the first connecting portion 3 and the second connecting portion 4 are not provided forms a blanking channel.

[0039] like Figure 2As shown, positioning blocks 5 are formed protrudingly on the inner wall of the inner support ring 1 near the first connection part 3 and the second connection part 4. The positioning blocks 5 extend from top to bottom, and a mounting plate 6 connecting the two is formed integrally between the two positioning blocks 5. The mounting plate 6 is circular, and the diameter of the mounting plate 6 is smaller than the inner diameter of the inner support ring 1. A square positioning groove 7 is formed on the upper side of the mounting plate 6. The center of the positioning groove 7 faces the center of the mounting plate 6, and the four corners of the positioning groove 7 exceed the mounting plate 6 to form a broken edge structure. Two of the opposite sides of the positioning groove 7 face the first connection part 3 and the second connection part 4. The bottom of the positioning groove 7 is formed with a central through hole 8 that penetrates the mounting plate 6, and four peripheral through holes 9 evenly distributed around the central through hole 8.

[0040] like Figure 2 As shown, the inner surface of the positioning block 5 is a concave arc surface, which is coaxial with the inner support ring 1, and the inner diameter is equal to or slightly larger than the outer diameter of the motor assembly 52. ​​A first inclined guide surface 10 is formed on the top of the positioning block 5, and the first inclined guide surface 10 is inclined from top to bottom toward the center of the inner support ring 1, which is used to guide the motor assembly 52 to easily enter the inner support ring 1. A avoidance groove 11 is formed on the inner side wall of the positioning block 5 near the upper end, and a second inclined guide surface 12 is formed on the inner side wall of the avoidance groove 11 near the upper end and inclined from top to bottom toward the center of the inner support ring 1. A square first through hole 13 is formed on the inner side wall of the avoidance groove 11 at a position below the second inclined guide surface 12, and a second through hole 14 is formed on the inner side wall of the avoidance groove 11 at a position below the first through hole 13. The second through hole 14 includes two longitudinal holes near the two side walls of the avoidance groove 11, and a transverse hole at the lower end of the longitudinal hole connecting the two longitudinal holes. The inner side wall of the inner support ring 1 forms a deformable block 15 at the lower end under the cutting of the second through hole 14, and the inner side wall at the lower end of the block 15 is inclined from top to bottom toward the center of the inner support ring 1. The lower edge position of the first through hole 13 on the positioning block 5 adjacent to the first connecting portion 3 is lower than the upper edge position of the second through hole 14, and the lower edge position of the first through hole 13 on the positioning block 5 adjacent to the second connecting portion 4 is higher than the upper edge position of the second through hole 14.

[0041] like Figure 1 and Figure 2As shown, the outer support ring 2 has a hole at the position of the first connection part 3 as a battery installation slot 16, and a hole at the position of the second connection part 4 as a control module installation slot 17. The side of the outer support ring 2 is formed with a countersunk hole 18 for passing bolts at the position below the battery installation slot 16 and the control module installation slot 17. The side of the outer support ring 2 is formed with a wire groove 19 that connects from the battery installation slot 16 to the control module installation slot 17. The wire groove 19 extends in the horizontal direction, and the lower side of the wire groove 19 near one end of the battery installation slot 16 forms a downward curved surface, so that the wires in the battery installation slot 16 can pass into the wire groove 19 at a larger angle. Four protrusions 20 are evenly distributed around the upper end of the outer support ring 2, and each protrusion 20 is formed with a large circular hole 21 and a small circular hole 22 located above the large circular hole 21.

[0042] like Figure 1 As shown, the first connecting portion 3 includes a first side connecting plate 23 constituting the left and right side walls of the battery installation groove 16, a first upper connecting plate 24 constituting the upper wall of the battery installation groove 16, a first lower connecting plate 25 constituting the lower wall of the battery installation groove 16, and a first bottom plate 26 formed by the downward extension of the inner support ring 1 and constituting a part of the bottom surface of the battery installation groove 16. The first upper connecting plate 24 is arranged horizontally, and the upper end surface of the first upper connecting plate 24 is formed with a first reinforcing rib 27 near both sides, and the first reinforcing rib 27 is connected to the inner support ring 1 and the outer support ring 2. The middle part of the first upper connecting plate 24 is formed with a cylindrical gear seat 28, a gear shaft 29 located above the gear seat 28, and a first guide cone 30 located above the gear shaft 29, and the outer diameter of the gear shaft 29 is smaller than the outer diameter of the gear seat 28. The first guide cone 30 is a conical structure with a small top and a large bottom, and the outer diameter of the lower end of the first guide cone 30 is smaller than the outer diameter of the gear shaft 29, and the center of the upper end surface of the first guide cone 30 is formed with an internal threaded hole. The upper end surface of the gear seat 28 is flush with the upper end surface of the outer support ring 2, and the side surface of the gear seat 28 is connected to the outer support ring 2. A horizontal battery baffle 31 is formed on the first bottom plate 26, and charging module mounting columns 32 are formed at the connection between the first bottom plate 26 and the first side connecting plates 23 on both sides. The position of the charging module mounting columns 32 is lower than the position of the battery baffle 31, and a threaded hole is formed in the center of each charging module mounting column 32. Charging module baffles 33 are formed near the lower ends of the two first side connecting plates 23, and a charging module positioning column 34 is formed in the middle of the first lower connecting plate 25.

[0043] The second connecting portion 4 includes a second side connecting plate 35 constituting the left and right side walls of the control module installation slot 17, a second upper connecting plate 36 constituting the upper wall of the control module installation slot 17, a second lower connecting plate 37 constituting the lower wall of the control module installation slot 17, and a second bottom plate 38 formed by extending downward from a portion of the inner support ring 1 and constituting a portion of the bottom surface of the control module installation slot 17. The second upper connecting plate 36 is arranged horizontally, and the upper end surface of the second upper connecting plate 36 is formed with second reinforcing ribs 39 near both sides, and the second reinforcing ribs 39 are connected to the inner support ring 1 and the outer support ring 2. A connecting column 40 is formed in the middle of the second upper connecting plate 36, and the side surface of the connecting column 40 is connected to the outer support ring 2. A second guide cone 41 is formed at the upper end of the connecting column 40. The second guide cone 41 is a conical structure with a small upper portion and a large lower portion, and the outer diameter of the lower end of the second guide cone 41 is smaller than the outer diameter of the connecting column 40, and an internal threaded hole is formed at the center of the upper end surface of the second guide cone 41. A horizontally extending upper control module baffle 42 is formed at a position between the first through hole 13 and the second through hole 14 in the control module installation slot 17, a horizontally extending middle control module baffle 43 is formed at a position in the middle of the control module installation slot 17, a horizontally extending lower control module baffle 44 is formed near the lower part of the control module installation slot 17, and a longitudinally extending control module longitudinal baffle 45 is connected to the middle of the middle control module baffle 43 and the lower control module baffle 44. An upper control module installation column 46 is formed at a position between the upper control module baffle 42 and the middle control module baffle 43 on the bottom surface of the control module installation slot 17, and a lower control module installation column 47 is formed near the lower end of the bottom surface of the control module installation slot 17.

[0044] Embodiment 2:

[0045] like Figure 3 As shown, the coffee grinder includes a main body housing 48, a powder receiving box 49 arranged below the main body housing 48, and a battery mounting frame is arranged inside the main body housing 48, through which a battery assembly 50 (including a battery and a battery charging module), a control module assembly 51, and a motor assembly 52 are installed. The output shaft 53 of the motor assembly 52 is axially slidably connected with a driving rod 54, and the driving rod 54 can be set as a multi-prism and inserted into the interface of the output shaft 53 of the motor assembly 52, so as to restrict the driving rod 54 from rotating relative to the output shaft 53. The lower end of the driving rod 54 is connected to a movable grinding disc 55. When the motor assembly 52 drives the movable grinding disc 55 to rotate relative to the fixed grinding disc 56 fixed on the main body housing 48, the coffee beans are ground into powder and fall into the powder receiving box 49.

[0046] like Figure 3 and Figure 4As shown, the upper end of the main housing 48 is rotatably connected with an adjusting knob 57, and the inner side of the adjusting knob 57 is formed with internal teeth. Elastic abutment members 58 are installed in the large circular hole 21 and the small circular hole 22 of the battery mounting frame, respectively abutting against the inner teeth of the adjusting knob 57 and the inner ring groove of the adjusting knob 57, which are used to limit the rotation of the adjusting knob 57 without axial movement, and facilitate accurate control of the rotation angle of the adjusting knob 57. A transmission gear 59 meshing with the adjusting knob 57 is installed on the gear shaft 29 of the battery mounting frame, and an adjusting gear 60 meshing with the transmission gear 59 is installed above the inner support ring 1 of the battery mounting frame, and the inner side of the adjusting gear 60 is formed with internal threads. A lifting rod 61 is installed on the driving rod 54, and the driving rod 54 can rotate relative to the lifting rod 61, and the driving rod 54 moves with the lifting rod 61 in the axial direction. Two extension pieces 62 are formed on the upper end of the lifting rod 61 and extend through the gap between the mounting plate 6 and the inner support ring 1 to the position of the adjusting gear 60 , and the extension piece 62 is formed with an external thread that matches the internal thread of the adjusting gear 60 .

[0047] When adjusting the coarseness of the powder output of the grinder, the adjusting knob 57 is turned, and the adjusting knob 57 drives the adjusting gear 60 to rotate through the transmission gear 59. Since the extension piece 62 of the lifting rod 61 cannot rotate under the limiting effect of the positioning block 5, the lifting rod 61 will rotate relative to the adjusting gear 60. When the two rotate relative to each other, due to the threaded connection relationship, the lifting rod 61 rises or falls, and drives the driving rod 54 and the movable grinding disc 55 on the driving rod 54 to rise and fall together, so as to adjust the gap between the movable grinding disc 55 and the fixed grinding disc 56, and change the coarseness of the powder output of the grinder.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A motor mounting bracket, characterized in that: It comprises an inner support ring (1), wherein a positioning block (5) is provided on the inner side wall of the inner support ring (1), and a mounting plate (6) for mounting a motor assembly (52) is provided on the positioning block (5), and a space is left between the mounting plate (6) and the inner support ring (1).

2. The motor mounting bracket according to claim 1 is characterized in that: The positioning blocks (5) are provided in at least two numbers and are both connected to the mounting plate (6); the positioning blocks (5) extend along the axial direction of the inner support ring (1).

3. The motor mounting bracket according to claim 1 or 2, characterized in that: The mounting plate (6) is circular, and a square positioning groove (7) is formed on the upper side of the mounting plate (6). The center of the positioning groove (7) is directly opposite to the center of the mounting plate (6), and the four corners of the positioning groove (7) all extend beyond the mounting plate (6) to form a broken edge structure. The bottom of the positioning groove (7) is formed with a central through hole (8) penetrating the mounting plate (6) and four peripheral through holes (9) evenly distributed along the periphery of the central through hole (8).

4. The motor mounting bracket according to claim 3 is characterized in that: The inner surface of the positioning block (5) is an inwardly concave arc-shaped surface coaxial with the inner support ring (1); a first inclined guide surface (10) is formed on the top of the positioning block (5); the first inclined guide surface (10) is inclined from top to bottom toward the center of the inner support ring (1); an avoidance groove (11) is formed on the inner side wall near the upper end of the positioning block (5); a second inclined guide surface (12) is formed on the inner side wall of the avoidance groove (11) near the upper end and inclined from top to bottom toward the center of the inner support ring (1); ), a square first through hole (13) is formed at a position below the avoidance groove (11), a second through hole (14) is formed on the inner side wall of the avoidance groove (11) at a position below the first through hole (13), the second through hole (14) includes two longitudinal holes close to the two side walls of the avoidance groove (11) and a transverse hole located at the lower end of the longitudinal holes connecting the two longitudinal holes, the inner side wall of the inner support ring (1) forms a deformable and movable block (15) at the lower end under the cutting of the second through hole (14), and the inner side wall of the lower end of the block (15) is inclined from top to bottom toward the center of the inner support ring (1).

5. The motor mounting bracket according to claim 4 is characterized in that: The lower edge position of the first through hole (13) on the positioning block (5) adjacent to the first connecting portion (3) is lower than the upper edge position of the second through hole (14), and the lower edge position of the first through hole (13) on the positioning block (5) adjacent to the second connecting portion (4) is higher than the upper edge position of the second through hole (14).

6. The motor mounting bracket according to claim 1 or 2, characterized in that: The invention also comprises an outer support ring (2) located outside the inner support ring (1), and a first connection portion (3) and a second connection portion (4) connecting the inner support ring (1) and the outer support ring (2); an area between the inner support ring (1) and the outer support ring (2) where the first connection portion (3) and the second connection portion (4) are not provided forms a material dropping channel.

7. The motor mounting bracket according to claim 6, characterized in that: The outer support ring (2) has a hole at the position of the first connection portion (3) as a battery installation slot (16), and has a hole at the position of the second connection portion (4) as a control module installation slot (17); a wire groove (19) is formed on the side of the outer support ring (2) and is connected from the battery installation slot (16) to the control module installation slot (17); the wire groove (19) extends in a horizontal direction, and the lower side surface of the wire groove (19) close to one end of the battery installation slot (16) forms a downward curved surface; the upper end of the outer support ring (2) is evenly distributed with four protrusions (20) in a circumferential direction, and each protrusion (20) is formed with a large circular hole (21) and a small circular hole (22) located above the large circular hole (21).

8. The motor mounting bracket according to claim 6, characterized in that: The first connecting portion (3) comprises a first side connecting plate (23) constituting the left and right side walls of the battery installation groove (16), a first upper connecting plate (24) constituting the upper wall of the battery installation groove (16), a first lower connecting plate (25) constituting the lower wall of the battery installation groove (16), and a first bottom plate (26) formed by extending downward from a portion of the inner support ring (1) and constituting a portion of the bottom surface of the battery installation groove (16); the first upper connecting plate (24) is arranged horizontally, and the upper end surface of the first upper connecting plate (24) is formed with first reinforcing ribs (27) at positions near both sides, and the first reinforcing ribs (27) are connected to the inner support ring (1) and the outer support ring (2); the middle part of the first upper connecting plate (24) is formed with a cylindrical gear seat (28), a gear shaft (29) located above the gear seat (28), and a first guide cone (30) located above the gear shaft (29), and the outer diameter of the gear shaft (29) is smaller than the outer diameter of the gear seat (28). The first guide cone (30) is a conical structure with a small top and a large bottom, and the outer diameter of the lower end of the first guide cone (30) is smaller than the outer diameter of the gear shaft (29), and an internal threaded hole is formed at the center of the upper end surface of the first guide cone (30); the upper end surface of the gear seat (28) is flush with the upper end surface of the outer support ring (2), and the side surface of the gear seat (28) is connected to the outer support ring (2); a horizontal battery baffle (31) is formed on the first bottom plate (26), and charging module mounting columns (32) are formed at the connection between the first bottom plate (26) and the first side connecting plates (23) on both sides, the position of the charging module mounting columns (32) is lower than the position of the battery baffle (31), and a threaded hole is formed at the center of each charging module mounting column (32); the two first side connecting plates (23) are both formed with charging module baffles (33) near the lower ends, and a charging module positioning column (34) is formed in the middle of the first lower connecting plate (25).

9. The motor mounting bracket according to claim 6, characterized in that: The second connecting portion (4) comprises a second side connecting plate (35) constituting the left and right side walls of the control module mounting groove (17), a second upper connecting plate (36) constituting the upper wall of the control module mounting groove (17), a second lower connecting plate (37) constituting the lower wall of the control module mounting groove (17), and a second bottom plate (38) formed by extending downward from a portion of the inner support ring (1) and constituting a portion of the bottom surface of the control module mounting groove (17); the second upper connecting plate (36) is arranged horizontally, and the upper end surface of the second upper connecting plate (36) is formed with second reinforcing ribs (39) at positions near both sides, and the second reinforcing ribs (39) are connected to the inner support ring (1) and the outer support ring (2); a connecting column (40) is formed in the middle part of the second upper connecting plate (36), the side surface of the connecting column (40) is connected to the outer support ring (2), and the upper end of the connecting column (40) is formed with a second guide cone (41), and the second guide cone (41) is a conical structure with a small upper portion and a large lower portion, and the second guide cone (41) is a conical structure with a small upper portion and a large lower portion. The outer diameter of the lower end of the body (41) is smaller than the outer diameter of the connecting column (40); an internal threaded hole is formed at the center of the upper end surface of the second guide cone (41); a horizontally extending upper control module baffle (42) is formed at a position between the first through hole (13) and the second through hole (14) in the control module installation groove (17); a horizontally extending middle control module baffle (43) is formed at a position near the lower part of the control module installation groove (17); A horizontally extending lower control module baffle (44) is formed, and a longitudinally extending control module longitudinal baffle (45) is connected to the middle of the middle control module baffle (43) and the lower control module baffle (44); an upper control module mounting column (46) is formed at a position between the upper control module baffle (42) and the middle control module baffle (43) on the bottom surface of the control module mounting groove (17), and a lower control module mounting column (47) is formed at a position near the lower end of the bottom surface of the control module mounting groove (17).

10. A coffee bean grinder, characterized by: It comprises a main body housing (48) and a powder receiving box (49) arranged below the main body housing (48), wherein the main body housing (48) is provided with a motor mounting bracket according to any one of claims 1 to 9.

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