CN218552139U - Coffee bean grinding device - Google Patents

Abstract

The utility model relates to a coffee bean grinder, including casing, axle center subassembly and mounting, axle center subassembly is assembled in the casing, and after the structure of grinding coffee was assembled with the outer cutter of casing to the interior cutter of axle center subassembly, its structural design through the mounting can be simple assemble axle center subassembly and casing fixed, simultaneously, also can dismantle axle center subassembly and casing through the structural design of mounting to do benefit to the use cleanness and the follow-up maintenance of coffee bean grinder after grinding coffee beans.

Description

Coffee bean grinding device

Technical Field

The utility model relates to a technical field of grinding coffee beans especially relates to a coffee bean grinder.

Background

The conventional coffee bean grinding device has the problem that ground coffee powder of coffee beans is easy to remain in the device. The above problems not only cause the problem of tainting with the smell of the mixture of the coffee beans of different types after being ground and the residual coffee powder, but also cause the problem that the health of the user is affected after the user drinks the coffee because the toxin of Ju is generated because the residual coffee beans are accumulated for a long time and the coffee brewed from the newly ground coffee powder has trace toxin after being mixed in the subsequently newly ground coffee powder. The conventional coffee bean grinding device is not easy to disassemble and assemble, so that a user cannot completely remove coffee powder remained after grinding coffee beans by the coffee bean grinding device at any time, and the cleaning and subsequent maintenance of the user who uses the coffee bean grinding device daily are not facilitated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a coffee bean grinder, it can solve traditional coffee bean grinder and be difficult for dismantling and assemble in order to carry out the problem of clean and follow-up maintenance behind the daily use coffee bean grinder.

In order to solve the technical problem, the utility model discloses a so realize:

the utility model provides a coffee bean grinder, it includes: a shell, an axis assembly and a fixing piece. The shell is provided with a shell, a bearing assembly and an outer cutter, the bearing assembly is arranged in the shell, the outer cutter is assembled in the shell, and the outer cutter is positioned below the bearing assembly; the axis assembly is assembled in the shell and provided with an axis piece, an inner cutter piece and an elastic piece, one end of the axis piece is provided with a connecting shaft and an axis cap, the axis cap is arranged on the connecting shaft, the outer diameter of the bottom end of the axis cap is larger than the outer diameter of the connecting shaft, the inner cutter piece is arranged at the other end of the axis piece, one end of the axis piece sequentially penetrates through the elastic piece and the bearing assembly, two ends of the elastic piece are respectively supported between the inner cutter piece and the bearing assembly, a grinding gap is formed between the inner cutter piece and the outer cutter piece, and the axis piece drives the inner cutter piece to rotate relative to the outer cutter piece so as to grind through the matching of the inner cutter piece and the outer cutter piece; the fixing piece is provided with a body, a fixing hole and a fixing groove, the shape of an orifice of the fixing hole and the shape of a notch of the fixing groove are the same as the shape of the periphery of the bottom end of the shaft cap, the fixing groove is arranged on the body, the position, corresponding to the fixing groove, of the fixing hole penetrates through the body, and the angle position, located on the surface of the body, of the notch of the fixing groove is different from the angle position, located on the surface of the body, of the orifice of the fixing hole; wherein, in the assembled state, the shaft cap correspondingly passes through the fixing hole of the fixing piece, and the fixing piece downwards supports against the bearing shaft assembly and the elastic piece; in the assembled state, the elastic part upwards supports the bearing assembly and the fixing part, the bottom end of the shaft cap is embedded in the fixing groove of the fixing part, and the fixing part is fixed between the shaft cap and the bearing assembly.

In one embodiment, the bearing shaft assembly includes a bearing shaft portion, a first ball bearing and a second ball bearing, the bottom of the bearing shaft portion has a lower bearing groove, the top of the bearing shaft portion has an upper bearing groove, the bearing shaft portion has a shaft hole, the shaft hole is communicated between the lower bearing groove and the upper bearing groove, the first ball bearing is located in the lower bearing groove, the second ball bearing is located in the upper bearing groove, and the shaft member is disposed through the first ball bearing, the bearing shaft portion and the second ball bearing.

In one embodiment, the shaft assembly further includes a collar disposed around the shaft member and located between the elastic member and the bottom of the bearing assembly.

In one embodiment, the bottom end of the shaft cap is provided with a shoulder, and the shape of the hole of the fixing hole, the shape of the notch of the fixing groove and the shape of the periphery of the shoulder of the shaft cap are polygons.

In one embodiment, the adjusting device further includes an adjusting assembly, the adjusting assembly includes an adjusting member, a plurality of driving rods and a rotating ring, the bottom of the adjusting member is screwed into the upper bearing groove, the adjusting member supports the fixing member, a gear ring is disposed on the top circumference of the adjusting member, the rotating ring is rotatably disposed on the housing, the driving rods are disposed on the rotating ring, and the driving rods are respectively engaged with the gear ring, wherein the rotating ring drives the driving rods to rotate, and the driving rods are linked with the gear ring to drive the adjusting member to rotate up or rotate down relative to the upper bearing groove.

In one embodiment, the adjusting device further comprises a third ball bearing, the adjusting member has a groove, the third ball bearing is disposed in the groove, and the fixing member is disposed on the third ball bearing.

In one embodiment, the outer side of the top of the housing has a plurality of protrusions, the inner side of the rotating ring has a plurality of recesses, the protrusions correspond to the recesses, and the protrusions are located on the rotating path of the recesses.

In one embodiment, the handle assembly further comprises a pivot member, a handle bar and a handle, wherein the pivot member is disposed at one end of the handle bar, the handle is disposed at the other end of the handle bar, and the pivot member is assembled on the shaft cap.

In one embodiment, the shaft cap has a groove, the pivot member is embedded in the shaft cap, the shaft cap and the pivot member are magnetic members, and the shaft cap and the pivot member are mutually magnetically attracted.

In one embodiment, a receiving space is formed between the housing and the bearing assembly, and the receiving space is communicated with the grinding gap.

In one embodiment, the hinge assembly further includes a cover assembly including a support member and a cover, the support member is assembled on the shaft cap, the cover is assembled on the support member, and the cover is covered over the accommodating space.

In one embodiment, a grinding bevel of the inner cutter has a grinding gap relative to a grinding ring surface of the outer cutter, the grinding bevel of the inner cutter has a first grinding surface and a second grinding surface, the first grinding surface is located above the second grinding surface, and grinding grains of the second grinding surface are dense compared with those of the first grinding surface.

In one embodiment, the device further comprises an electric mechanism, and the electric mechanism is connected with the core piece.

The utility model provides a coffee bean grinder, including casing, axle center subassembly and mounting, axle center subassembly is assembled in the casing, and after the structure of grinding coffee was assembled with the outer cutter of casing to the interior cutter of axle center subassembly, its structural design through the mounting can be simple assemble axle center subassembly and casing fixed, simultaneously, also can dismantle axle center subassembly and casing through the structure of mounting to do benefit to the use cleanness and the follow-up maintenance of coffee bean grinder after grinding coffee beans.

The accompanying drawings, which are included to provide a further understanding of the invention and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention.

Drawings

FIG. 1 is a perspective view of a coffee bean grinding apparatus of the present invention;

FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A' of FIG. 1;

FIG. 3 is an exploded view of a portion of the coffee bean grinder assembly of the present invention;

FIG. 4 is another exploded view of a part of the structure of the coffee bean grinder of the present invention;

fig. 5 is a first view showing the fixing action of the fixing member and the shaft of the present invention;

fig. 6 is a second diagram of the fixing action of the fixing member and the shaft of the present invention;

fig. 7 is a third drawing illustrating the fixing action of the fixing member and the shaft of the present invention;

fig. 8 is a fourth view illustrating the fixing action of the fixing member and the shaft of the present invention;

FIG. 9 is another exploded view of a part of the structure of the coffee bean grinder of the present invention;

FIG. 10 is a further exploded view of a part of the structure of the coffee bean grinder of the present invention; and

fig. 11 is a perspective view of the electric mechanism connected to the coffee bean grinder of the present invention.

The reference numbers indicate: 1-coffee bean grinding means; 11-a housing; 110-a containing space; 111-a housing; 112-a bearing assembly; 1121-bearing part; 1122-a first ball bearing; 1123-a second ball bearing; 1124-lower bearing groove; 1125-upper bearing groove; 1126-axle center hole; 1127-internal thread; 113-an outer insert; 1131-grinding the ring surface; 114-a male member; 13-an axle assembly; 131-a hub; 1311-a connecting shaft; 1312-a shaft cap; 13120-shoulder; 1313-grooves; 132-an inner insert; 1321-grinding the bevel; 1322-a first abrasive surface; 1323-a second abrasive side; 133-an elastic member; 134-a collar; 15-a fixing member; 150-a body; 151-fixing holes; 152-a fixation groove; 17-an adjustment assembly; 171-a trim; 1711-toothed ring; 1712-grooves; 172-a drive rod; 173-a rotating ring; 1731-a notch; 174-a third ball bearing; 19-a handle assembly; 191-a pivot; 192-hand lever; 193-a grip; 21-a cover plate assembly; 211-a support; 212-a cover plate; 23-a container; 231-a receiving groove; g-grinding gap.

Detailed Description

Embodiments of the invention will be described in detail below with reference to the drawings, and for the purpose of clarity, numerous implementation details are set forth in the following description. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings for the sake of simplifying the drawings. In the following embodiments, the same or similar components will be denoted by the same reference numerals.

Referring to fig. 1 to 3, fig. 1 isbase:Sub>A perspective view ofbase:Sub>A coffee bean grinder of the present invention, fig. 2 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A' of fig. 1, and fig. 3 is an exploded view ofbase:Sub>A portion of the coffee bean grinder. As shown in the figure, the utility model provides a coffee bean grinding device 1, including casing 11, axle center subassembly 13 and mounting 15. The housing 11 has a casing 111, a bearing assembly 112 and an outer cutter 113, the bearing assembly 112 is disposed in the casing 111, the outer cutter 113 is assembled in the casing 111, and the outer cutter 113 is located below the bearing assembly 112. The shaft center assembly 13 is assembled in the housing 111, the shaft center assembly 13 has a shaft center piece 131, an inner cutter 132 and an elastic piece 133, one end of the shaft center piece 131 has a connecting shaft 1311 and a shaft cap 1312, the shaft cap 1312 is disposed on the connecting shaft 1311, the outer diameter of the bottom end of the shaft cap 1312 is larger than the outer diameter of the connecting shaft 1311, the inner cutter 132 is disposed at the other end of the shaft center piece 131, one end of the shaft center piece 131 sequentially penetrates through the elastic piece 133 and the bearing assembly 112, two ends of the elastic piece 133 are respectively supported between the inner cutter 132 and the bearing assembly 112, and a grinding gap G is formed between the inner cutter 132 and the outer cutter 113. The hub 131 drives the inner cutter 132 in rotation relative to the outer cutter 113, the coffee beans are ground by cooperation of the inner cutter 132 and the outer cutter 113, and ground coffee powder of the coffee beans is output through the grinding gap G.

As mentioned above, an accommodating space 110 is formed between the housing 111 and the bearing assembly 112, and the accommodating space 110 is communicated with the grinding gap G. In addition, the grinding bevel 1321 of the inner tool 132 has a grinding gap G with respect to the grinding ring surface 1131 of the outer tool 113, the grinding bevel 1321 of the inner tool 132 has a first grinding surface 1322 and a second grinding surface 1323, the first grinding surface 1322 is located above the second grinding surface 1323, and the grinding texture of the second grinding surface 1323 is denser than that of the first grinding surface 1322. Thus, after the coffee beans are placed in the accommodating space 110, the coffee beans are roughly ground by the first grinding surface 1322 of the grinding inclined surface 1321 and the grinding ring surface 1131, and then further finely ground by the second grinding surface 1323 of the grinding inclined surface 1321 and the grinding ring surface 1131.

Please refer to fig. 4, which is another exploded view of a portion of the coffee bean grinder. As shown in the drawings, in the embodiment of the present invention, the fixing member 15 has a body 150, a fixing hole 151 and a fixing groove 152, the hole shape of the fixing hole 151 and the notch shape of the fixing groove 152 are the same as the shape of the shoulder 13120 formed at the bottom end of the shaft cap 1312, the fixing groove 152 is disposed on the body 150, the fixing hole 151 penetrates through the body 150 at a position corresponding to the fixing groove 152, and the notch angular position of the fixing groove 152 on the surface of the body 150 is different from the hole angular position of the fixing hole 151 on the surface of the body 150. Wherein, the orifice shape of the fixing hole 151, the notch shape of the fixing groove 152 and the peripheral shape of the shoulder 13120 of the shaft cap 1312 are polygonal, for example: hexagonal, pentagonal, quadrangular or triangular shape, but the practical implementation is not limited thereto, and the shapes can be selected and adjusted according to the needs of users.

The shape of the embodiment of the present invention is illustrated by a hexagon, the notch of the fixing groove 152 and the hole opening of the fixing hole 151 are hexagons, the fixing groove 152 and the fixing hole 151 are overlapped and disposed on the fixing member 15, the angular position of the notch of the fixing groove 152 is different from the angular position of the hole opening of the fixing hole 151, that is, the notch of the fixing groove 152 and the center of the hole opening of the fixing hole 151 are the same, but two hexagons deflect each other. In other words, the fixing groove 152 and the fixing hole 151 have an overlapping portion at the center, and after the fixing groove 152 and the fixing hole 151 are deflected at the same axial position, the corner of the notch of the fixing groove 152 and the corner of the opening of the fixing hole are offset from each other and do not overlap, i.e., the corner of the notch of the fixing groove 152 corresponds to the outside of the side of the opening of the fixing hole 151, and the corner of the opening of the fixing hole 151 corresponds to the outside of the side of the notch of the fixing groove 152. Furthermore, when the fixing hole 151 penetrates through the groove bottoms of the fixing member 15 and the fixing groove 152, and the fixing hole 151 penetrates through a portion of the groove bottom of the fixing groove 152, the region of the fixing groove 152 not penetrated by the fixing hole 151 (i.e., the corner of the notch of the fixing groove 152) still has the groove bottom of the fixing groove 152, which serves as the shoulder 13120 for supporting the shaft cap 1312.

Please refer to fig. 5, which is a first diagram of the fixing member and the shaft of the present invention. As shown in the drawings, in the assembled state of the embodiment of the present invention, the fixing hole 151 of the fixing member 15 corresponds to the peripheral shape of the shoulder portion 13120 of the shaft cap 1312, and the connecting shaft 1311 and the shaft cap 1312 of the shaft center 131 are inserted into the fixing hole 151 of the fixing member 15. Here, the dotted line shown in fig. 5 is a schematic range of the aperture region of the fixing hole 151, and also indicates a region where the shaft cap 1312 and the connecting shaft 1311 pass through the fixing hole 151 of the fixing piece 15 upward.

Please refer to fig. 6, which is a second diagram of the fixing action between the fixing member and the shaft of the present invention. As shown in the drawings, in the embodiment of the present invention, after the connecting shaft 1311 and the shaft cap 1312 correspondingly pass through the fixing hole 151 of the fixing element 15, the fixing element 15 presses the bearing assembly 112 of the housing 11 downward (please refer to fig. 2 again), so that the bearing assembly 112 of the housing 11 presses the elastic element 133 downward, and the shoulder 13120 of the shaft cap 1312 is located above the hole opening of the fixing hole 151 of the fixing element 15, that is, the connecting shaft 1311 is located in the fixing hole 151 of the fixing element 15.

Please refer to fig. 7, which shows a third diagram of the fixing member and the shaft of the present invention. As shown in the drawings, in the embodiment of the present invention, the hole diameter of the fixing hole 151 of the fixing member 15 is larger than the outer diameter of the connecting shaft 1311, so that the rotatable fixing member 15 is turned from the angle of the hole opening of the fixing hole 151 corresponding to the shoulder 13120 of the shaft cap 1312 to the angle of the notch of the fixing groove 152 corresponding to the shoulder 13120 of the shaft cap 1312, that is, the corner of the shoulder 13120 of the shaft cap 1312 corresponds to the position above the corner of the fixing groove 152 having the groove bottom, wherein the dotted line shown in fig. 7 is the schematic range of the notch area of the fixing groove 152.

Please refer to fig. 8, which is a fourth diagram of the fixing action between the fixing member and the shaft of the present invention. As shown in the drawings, in the assembled state of the embodiment of the present invention, the external force of the fixing member 15 pushing the bearing assembly 112 of the housing 11 downward is released, so that the elastic member 133 does not receive any pressure, the elastic member 133 recovers the elastic force to support the bearing assembly 112 of the housing 11 upward, the bearing assembly 112 supports the fixing member 15 upward, the shoulder 13120 of the shaft cap 1312 is engaged with the fixing groove 152, and the groove bottom of the fixing groove 152 supports the corner of the shoulder 13120, so that the fixing member 15 is fixed between the shaft cap 1312 and the bearing assembly 112.

Referring to fig. 3 again, the bearing assembly 112 includes a bearing portion 1121, a first ball bearing 1122 and a second ball bearing 1123, the bottom of the bearing portion 1121 has a lower bearing groove 1124, the top of the bearing portion 1121 has an upper bearing groove 1125, the bearing portion 1121 has a shaft hole 1126, the shaft hole 1126 is connected between the lower bearing groove 1124 and the upper bearing groove 1125, the first ball bearing 1122 is located in the lower bearing groove 1124, the second ball bearing 1123 is located in the upper bearing groove 1125, the shaft member 131 is inserted into the first ball bearing 1122, the bearing portion 1121 and the second ball bearing 1123, the first ball bearing 1122 and the second ball bearing 1123 are fixed to the shaft member 131, so as to reduce the rotation friction force of the shaft member 131 relative to the bearing portion 1121 of the bearing assembly 112. In addition, the shaft assembly 13 further includes a collar 134, the collar 134 is sleeved on the shaft member 131, and the collar 134 is located between the elastic member 133 and the bottom of the bearing assembly 112, and the collar 134 helps to support and stabilize one end of the elastic member 133.

Fig. 9 is another exploded view of a part of the coffee bean grinder of the present invention. As shown in the drawings, the present invention further includes an adjusting element 17, the adjusting element 17 includes an adjusting element 171, a plurality of driving rods 172 and a rotating ring 173, the outer side of the bottom of the adjusting element 171 has an external thread 1713, the inner portion of the upper bearing groove 1125 has an internal thread 1127, and the external thread 1713 at the bottom of the adjusting element 171 is screwed into the internal thread 1127 of the upper bearing groove 1125. The adjusting element 171 is supported below the fixing element 15, a toothed ring 1711 is disposed on the top of the adjusting element 171, the rotating ring 173 is rotatably disposed on the housing 11, the driving rods 172 are disposed on the rotating ring 173, the driving rods 172 are respectively engaged with the toothed ring 1711, wherein the rotating ring 173 drives the driving rods 172 to rotate, and the driving rods 172 drive the toothed ring 1711 to drive the adjusting element 171 to rotate up or rotate down relative to the upper bearing groove 1125.

Referring back to fig. 2, when the adjusting member 171 is rotated and lifted, the fixing member 15 supported by the adjusting member 171 is lifted upwards, and at the same time, the fixing member 15 pulls the shaft member 131 upwards, the inner blade 132 of the shaft member 131 compresses the elastic member 133 in the direction of the bearing assembly 112, and the grinding inclined surface 1321 of the inner blade 132 of the shaft member 131 approaches the grinding ring surface 1131 of the outer blade 113 of the housing 11 to reduce the grinding gap G, so that when the size of the ground coffee powder is smaller than the grinding gap G, the coffee powder falls out from the grinding gap G, thereby controlling the particle size of the ground coffee powder. In fig. 2, when the adjusting member 171 is rotated and raised to the highest position, the bottom of the grinding bevel 1321 of the inner blade 132 of the hub member 131 and the bottom of the grinding ring surface 1131 of the outer blade 113 of the housing 11 are brought into contact with each other, and the grinding gap G is closed.

When the adjusting member 171 is rotated and lowered, the fixing member 15 is supported by the adjusting member 171 to move downward, the fixing member 15 no longer acts on the shaft member 131, and at the same time, the inner blade 132 of the shaft member 131 is no longer compressed toward the bearing assembly 112 with respect to the elastic member 133, in other words, the elastic restoring force of the elastic member 133 pushes the inner blade 132 downward, which also drives the shaft member 131 to move downward, and the grinding inclined surface 1321 of the inner blade 132 moves away from the grinding ring surface 1131 of the outer blade 113 of the housing 11 to enlarge the grinding gap G, so that the ground coffee bean powder also becomes coarse.

The adjusting assembly 17 further includes a third ball bearing 174, the adjusting member 171 has a recess 1712, the third ball bearing 174 is disposed in the recess 1712, and the fixing member 15 is disposed on the third ball bearing 174. The hub 131 also passes through a third ball bearing 174. The third ball bearing 174 thus serves to reduce the rotational friction between the fixing member 15 and the adjustment member 171. Furthermore, the top of the housing 11 has a plurality of protrusions 114 on the outside, the rotating ring 173 has a plurality of recesses 1731 on the inside, the plurality of protrusions 114 correspond to the plurality of recesses 1731, the protrusions 114 are located on the rotating path of the recesses 173 of the rotating ring 173, and during the rotation of the rotating ring 173, the vibration and sound generated when the protrusions 114 move into or out of the recesses 1731 can be sensed obviously. Wherein, the outer surface of the rotating ring 173 has numbers, and during the rotating process, the user can adjust the rotating distance by the numbers and scales of the rotating ring 173 to adjust the size of the grinding gap G.

In addition, the top outer side of the housing 11 has a return-to-zero marker 115 located between the two protrusions 114. In this case, the user can rotate the adjusting member 171 to the highest position, so as to raise the inner cutter 132 of the hub member 131 to the highest position, and assemble the zero point of the number or scale of the outer surface of the rotating ring 173 corresponding to the position of the zero-returning mark 115 in a state where the grinding gap G is closed. Thus, the user can know that the grinding gap G of the coffee bean grinding apparatus 1 is the zero point of the closed state, and the subsequent adjustment of the size of the grinding gap G can be performed according to the zero-returning mark 115, and how many scales the rotating ring 173 rotates to correspond to how large or small the grinding gap G.

Please refer to fig. 10, which is a further exploded view of the coffee bean grinding device of the present invention. As shown in the drawings, the present invention further includes a handle assembly 19, the handle assembly 19 includes a pivot member 191, a handle 192 and a grip 193, the pivot member 191 is disposed at one end of the handle 192, the grip 193 is disposed at the other end of the handle 192, and the pivot member 191 is assembled on a shaft cap 1312. Furthermore, the shaft cap 1312 has a groove 1313, the pivot element 191 is embedded in the shaft cap 1312, the shaft cap 1312 and the pivot element 191 are magnetic elements, and the shaft cap 1312 and the pivot element 191 are magnetically attracted to each other, so that assembly and fixation are facilitated.

Furthermore, the cover plate assembly 21 further includes a support 211 and a cover plate 212, the support 211 is assembled on the shaft cap 1312, the cover plate 212 is assembled on the support 211, and the cover plate 212 covers the accommodating space 110. In addition, the coffee grinder further comprises a containing part 23, the containing part 23 is provided with an outlet of the containing groove 231 corresponding to the grinding gap G, and the containing part 23 is used for collecting the ground coffee powder.

Please refer to fig. 11, which is a perspective view of the electric mechanism connected to the coffee bean grinder of the present invention. As shown in the figure, the coffee bean grinding device of the present invention further comprises an electric mechanism 25, wherein the electric mechanism 25 is connected to the hub 131, and the electric mechanism 25 drives the hub 131 to rotate, and the hub 131 can drive the inner knife 132 to rotate relative to the outer knife 113, so as to achieve electric coffee bean grinding. The electric mechanism 25 is a motor or any drive assembly. Wherein the electric mechanism 25 can be at least a base of another Taiwan utility model (utility model No.: 111203945) of the utility model, and is connected to the axle member 131 by the driving shaft of the first assembly part, wherein the length of the driving shaft is matched with the structure, and the whole shape and size of the coffee bean grinding device of the utility model can be changed.

To sum up, the utility model provides a coffee bean grinder, including casing, axle center subassembly and mounting, axle center subassembly is assembled in the casing, and after the structure of grinding coffee was assembled to the interior knife of axle center subassembly and the outer knife of casing, its structural design through the mounting can be simple assemble axle center subassembly and casing fixed, simultaneously, also can dismantle axle center subassembly and casing through the structure of mounting to do benefit to coffee bean grinder in the clean and follow-up maintenance of the use of grinding coffee beans.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of other like elements in a process, method, article, or apparatus comprising the element.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (13)

1. A coffee bean grinding apparatus, comprising:

the cutter comprises a shell, a cutter body and a cutter blade, wherein the shell is provided with a shell, a bearing assembly and an outer cutter blade;

the shaft center component is assembled in the shell and provided with a shaft center piece, an inner cutter piece and an elastic piece, one end of the shaft center piece is provided with a connecting shaft and a shaft cap, the shaft cap is arranged on the connecting shaft, the outer diameter of the bottom end of the shaft cap is larger than that of the connecting shaft, the inner cutter piece is arranged at the other end of the shaft center piece, one end of the shaft center piece sequentially penetrates through the elastic piece and the bearing shaft component, two ends of the elastic piece are respectively supported between the inner cutter piece and the bearing shaft component, a grinding gap is formed between the inner cutter piece and the outer cutter piece, and the shaft center piece drives the inner cutter piece to rotate relative to the outer cutter piece so as to grind through the matching of the inner cutter piece and the outer cutter piece; and

the fixing piece is provided with a body, a fixing hole and a fixing groove, the shape of an orifice of the fixing hole and the shape of a notch of the fixing groove are the same as the shape of the periphery of the bottom end of the shaft cap, the fixing groove is arranged on the body, the fixing hole penetrates through the body at a position corresponding to the fixing groove, and the angular position of the notch of the fixing groove on the surface of the body is different from the angular position of the orifice of the fixing hole on the surface of the body;

wherein, in the assembled state, the shaft cap correspondingly passes through the fixing hole of the fixing piece, and the fixing piece downwards supports against the bearing assembly and the elastic piece; in the assembled state, the elastic element upwards supports the bearing assembly and the fixing element, the bottom end of the shaft cap is embedded in the fixing groove of the fixing element, and the fixing element is fixed between the shaft cap and the bearing assembly.

2. A coffee bean grinding apparatus as recited in claim 1, wherein: the bearing shaft assembly comprises a bearing shaft part, a first ball bearing and a second ball bearing, wherein a lower bearing groove is formed in the bottom of the bearing shaft part, an upper bearing groove is formed in the top of the bearing shaft part, a shaft hole is formed in the bearing shaft part and communicated between the lower bearing groove and the upper bearing groove, the first ball bearing is located in the lower bearing groove, the second ball bearing is located in the upper bearing groove, and the shaft element penetrates through the first ball bearing, the bearing shaft part and the second ball bearing.

3. The coffee bean grinding apparatus of claim 1, wherein: the axle center assembly further comprises a sleeve ring, the sleeve ring is sleeved on the axle center piece, and the sleeve ring is located between the elastic piece and the bottom of the bearing assembly.

4. A coffee bean grinding apparatus as recited in claim 1, wherein: the bottom end of the shaft cap is provided with a shoulder, and the shape of the hole opening of the fixing hole, the shape of the notch of the fixing groove and the shape of the periphery of the shoulder of the shaft cap are polygons.

5. The coffee bean grinding apparatus of claim 2, wherein: the adjusting assembly comprises an adjusting piece, a plurality of driving rods and a rotating ring, the bottom of the adjusting piece is screwed in the upper bearing groove, the adjusting piece supports the fixing piece, a toothed ring is arranged on the periphery of the top of the adjusting piece, the rotating ring is rotatably arranged on the shell, the driving rods are arranged on the rotating ring, the driving rods are clamped on the toothed ring respectively, the rotating ring drives the driving rods to rotate, and the driving rods are linked with the toothed ring to drive the adjusting piece to rotate upwards or downwards relative to the upper bearing groove.

6. A coffee bean grinding apparatus as defined in claim 5, wherein: the adjusting part is provided with a groove, the third ball bearing is arranged in the groove, and the fixing part is arranged on the third ball bearing.

7. A coffee bean grinding apparatus as defined in claim 5, wherein: the top of the shell is provided with a plurality of convex pieces, the inner side of the rotating ring is provided with a plurality of notches, the plurality of convex pieces correspond to the plurality of notches, and the plurality of convex pieces are positioned on the rotating path of the plurality of notches.

8. A coffee bean grinding apparatus as recited in claim 1, wherein: the handle assembly comprises a pivoting piece, a hand rod and a handle, the pivoting piece is arranged at one end of the hand rod, the handle is arranged at the other end of the hand rod, and the pivoting piece is assembled on the shaft cap.

9. The coffee bean grinding apparatus of claim 8, wherein: the shaft cap is provided with a groove, the pivoting piece is embedded in the shaft cap, the shaft cap and the pivoting piece are magnetic pieces, and the shaft cap and the pivoting piece are mutually attracted in a magnetic manner.

10. A coffee bean grinding apparatus as recited in claim 1, wherein: an accommodating space is arranged between the shell and the bearing component, and the accommodating space is communicated with the grinding gap.

11. A coffee bean grinding apparatus as recited in claim 10, wherein: the cover plate assembly comprises a supporting piece and a cover plate, the supporting piece is assembled on the shaft cap, the cover plate is assembled on the supporting piece, and the cover plate is covered above the accommodating space in a sealing mode.

12. A coffee bean grinding apparatus as recited in claim 1, wherein: the grinding inclined plane of the inner cutter piece is provided with the grinding gap relative to a grinding ring surface of the outer cutter piece, the grinding inclined plane of the inner cutter piece is provided with a first grinding surface and a second grinding surface, the first grinding surface is positioned above the second grinding surface, and the grinding grains of the second grinding surface are dense compared with the grinding grains of the first grinding surface.

13. The coffee bean grinding apparatus of claim 1, wherein: still include an electric mechanism, this electric mechanism connects this axle center piece.

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