Grinding device

Abstract

The invention discloses a grinding device which comprises a grinding main body internally provided with a grinding channel, a grinding head and a driving shaft used for driving the grinding head to rotate, an auxiliary frame used for stabilizing lifting of the driving shaft is arranged in the grinding channel, and the driving shaft is installed on the auxiliary frame through a quick assembly. The quick-mounting assembly comprises a quick-mounting elastic piece and a locking piece, and the quick-mounting elastic piece is clamped between the grinding head and the auxiliary frame; one end of the driving shaft is connected with the grinding head, the other end of the driving shaft is provided with a limiting head with a non-circular section, and the locking piece is provided with a locking hole matched with the limiting head; the auxiliary frame is provided with a rotating shaft hole for the driving shaft and the limiting head to penetrate through, and the limiting head is provided with a locking groove for the locking piece to rotate and move, so that when the limiting head rotates to a preset position at the position of the locking groove, the locking piece is clamped between the inner wall of the locking groove and the auxiliary frame. The device is simple in structure and easy to assemble, disassemble and clean.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding tools, and particularly to a grinding device. Background Art

[0002] Among food grinding tools, a coffee grinder for grinding coffee beans is commonly seen. In existing household coffee grinding equipment, it is generally of a cylindrical structure with a grinding structure provided inside. Therefore, during use, the material to be processed needs to be put into the grinding cavity, and after being processed by the core grinding components, the finished product is output. This processing flow is likely to cause material residue inside the cavity, especially more obvious in the joint area of the precision grinding components. Since the grinding device, as the core component bearing mechanical stress, is usually assembled by a high-strength fixing method, it is objectively difficult to disassemble and maintain, which directly affects the daily cleaning efficiency of the equipment. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a grinding device with a simple structure and easy to load, unload and clean.

[0004] To solve the above technical problem, the present invention provides a grinding device, which includes a grinding main body with a grinding channel inside, a grinding head, and a driving shaft for driving the grinding head to rotate. An auxiliary frame for stabilizing the lifting of the driving shaft is provided in the grinding channel, and the driving shaft is installed on the auxiliary frame through a quick-installation component;

[0005] Wherein, the quick-installation component includes a quick-installation elastic member and a locking member for restricting the downward movement of the driving shaft. The quick-installation elastic member is clamped between the grinding head and the auxiliary frame to drive the grinding head to press down;

[0006] One end of the driving shaft is connected to the grinding head, and the other end is provided with a limiting head with a non-circular cross-section. The locking member is provided with a locking hole adapted to the limiting head for the limiting head to pass through;

[0007] The auxiliary frame is provided with a rotating shaft hole for the driving shaft and the limiting head to pass through. The limiting head is provided with a locking groove for the locking member to rotate and move, so that when the limiting head rotates to a preset position at the locking groove, the locking member is clamped between the inner wall of the locking groove and the auxiliary frame.

[0008] As an improvement of the above solution, a grinding ring adapted to the grinding head is provided at one port of the grinding channel, and the grinding head is provided with an inclined grinding surface corresponding to the inner wall of the grinding ring.

[0009] As an improvement of the above solution, the cross-section of the limiting head is polygonal or elliptical.

[0010] As an improvement to the above solution, it further includes a driver for driving the rotation of the drive shaft. The drive shaft is provided with a drive end for connecting to the driver to be driven by the driver.

[0011] As an improvement to the above solution, the driver includes a drive housing and a drive motor. A drive space for installing the drive motor and a powder falling space for communicating with the grinding channel are partitioned inside the drive housing; a feed port is provided at the top of the drive housing.

[0012] As an improvement to the above solution, it further includes a first adjustment assembly for driving the grinding ring to move up and down;

[0013] The first adjustment assembly includes a first elastic member for supporting the grinding ring and a first adjustment ring for pressing down the grinding ring. First threaded portions for threaded connection with each other are provided on the outer part of the grinding main body and the inner wall of the first adjustment ring. An adjustment linkage member for the first adjustment ring to press down and contact is provided on the side wall of the grinding ring, and a first adjustment stroke hole for the adjustment linkage member to move up and down is provided on the side wall of the grinding main body.

[0014] As an improvement to the above solution, the driver includes a rocker arm and a connection head provided at one end of the rocker arm. The connection head is provided with a connection hole adapted to the drive end;

[0015] The drive end is connected to the connection head through the connection hole.

[0016] As an improvement to the above solution, it further includes a second adjustment assembly for driving the grinding head to move up and down;

[0017] The second adjustment assembly includes a rotating shaft auxiliary seat for supporting the locking member and a second adjustment ring for driving the rotating shaft auxiliary seat. Second threaded portions for threaded connection with each other are provided on the outer part of the grinding main body and the inner wall of the second adjustment ring;

[0018] The rotating shaft auxiliary seat is provided with an auxiliary hole for the drive shaft and the limit head to pass through, and the rotating shaft auxiliary seat is provided with a connecting arm connected to the second adjustment ring to move up and down following the second adjustment ring.

[0019] As an improvement to the above solution, the rocker arm includes a folding arm and a connecting arm for connecting to the connection head. One end of the connecting arm is connected to the connection head, and the other end is hinged to the folding arm to enable the folding arm to swing towards the grinding main body.

[0020] As an improvement to the above solution, it further includes a powder cup. The cup mouth of the powder cup is butted against the lower port of the grinding main body to receive the powder falling from the grinding channel.

[0021] Implementing the present invention has the following beneficial effects:

[0022] The present invention discloses a grinding device, which includes a grinding main body with a grinding channel inside, a grinding head, and a driving shaft. An auxiliary frame is arranged inside the grinding channel, and the driving shaft is installed on the auxiliary frame through a quick-installation component; one end of the driving shaft is connected to the grinding head, and the other end is provided with a limiting head with a non-circular cross-section. The auxiliary frame is provided with a rotating shaft hole for the driving shaft and the limiting head to pass through.

[0023] Wherein, the quick-installation component includes a quick-installation elastic part and a locking part for restricting the downward movement of the driving shaft. The quick-installation elastic part is clamped between the grinding head and the auxiliary frame to drive the grinding head to press down; correspondingly, the locking part is provided with a locking hole adapted to the limiting head for the limiting head to pass through. Therefore, when the locking part can be disengaged from the limiting head, the driving shaft can be unrestrictedly detached from the rotating shaft hole, thereby completing the disassembly of the driving shaft to facilitate the tilting of the driving shaft, the grinding head, and the grinding channel.

[0024] Correspondingly, based on the non-circular cross-section design of the limiting head, the limiting head is provided with a locking groove for the rotating movement of the locking part, so that when the limiting head rotates to a preset position at the locking groove, that is, when the limiting head and the locking hole are misaligned, the locking part is clamped between the inner wall of the locking groove and the auxiliary frame, so that the locking part cannot move along the axial direction of the driving shaft. At the same time, under the action of the quick-installation elastic part driving the driving shaft to press down, the locking part will be clamped and cannot rotate independently, thereby ensuring the installation stability of the driving shaft. Description of the Drawings

[0025] Figure 1 is a schematic structural diagram of the grinding device according to the first embodiment of the present invention;

[0026] Figure 2 is a schematic cross-sectional structural diagram of the grinding device according to the first embodiment of the present invention;

[0027] Figure 3 is a schematic structural diagram of the grinding device equipped with a driver and a powder cup according to the first embodiment of the present invention;

[0028] Figure 4 is a schematic cross-sectional structural diagram of the grinding device equipped with a driver and a powder cup according to the first embodiment of the present invention;

[0029] Figure 5 is a schematic cross-sectional structural diagram of the grinding device according to the second embodiment of the present invention. Detailed Embodiments

[0030] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be described in further detail below with reference to the accompanying drawings.

[0031] See also Figure 1 、 2 A first embodiment of the present invention provides a grinding device, comprising a grinding body 1 having a grinding channel 1a therein, a grinding head 2, and a drive shaft 3 for driving the grinding head 2 to rotate. An auxiliary frame 4 is provided in the grinding channel 1a for stabilizing the lifting and lowering of the drive shaft 3. The drive shaft 3 is mounted on the auxiliary frame 4 via a quick-release assembly.

[0032] The quick-release assembly includes a quick-release elastic member 5 and a locking member 6 for limiting the downward movement of the drive shaft 3. The quick-release elastic member 5 is clamped between the grinding head 2 and the auxiliary frame 4 to drive the grinding head 2 downward.

[0033] One end of the drive shaft 3 is connected to the grinding head 2, and the other end is provided with a stopper head 31 having a non-circular cross-section. The locking member 6 is provided with a locking hole 61 adapted to fit the stopper head 31 and for the stopper head 31 to pass through. The stopper head having a non-circular cross-section can be shaped like a polygonal prism, an elliptical cylinder, or a columnar body with a rectangular and sector-shaped cross-section.

[0034] The auxiliary frame 4 is provided with a shaft hole 41 for the driving shaft 3 and the limiting head 31 to pass through. The limiting head 31 is provided with a locking groove 311 for the locking member 6 to rotate and move. When the limiting head 31 is rotated to a preset position in the locking groove 311, the locking member 6 is clamped between the inner wall of the locking groove 311 and the auxiliary frame 4. Preferably, the quick-release elastic member 5 is a spring.

[0035] The grinding device further includes a powder cup 7, the cup opening of which is connected to the lower end of the grinding body 1 to receive the powder falling from the grinding channel 1a.

[0036] The powder cup 7 and the grinding body 1 can be connected by threaded connection or magnetic attraction. Regarding the magnetic attraction connection method, the grinding body 1 and the powder cup 7 are both provided with magnets 71 for mutual magnetic attraction. More preferably, the grinding body 1 and the powder cup 7 are both provided with multiple magnets 71, and the magnets are distributed circumferentially. Furthermore, for the magnets 71 provided on the grinding body 1 and the powder cup 7, the magnetic poles of two adjacent magnets 71 are opposite. Therefore, when the user screws the powder cup, the two mutually attractive magnets are offset and can produce a bouncing effect.

[0037] Specifically, a grinding ring 8 adapted to the grinding head 2 is provided at one port of the grinding channel 1a, and the grinding head 2 is provided with an inclined grinding surface 2a corresponding to the inner wall of the grinding ring 8. Therefore, when the material entering the grinding channel 1a falls between the grinding head 2 and the grinding ring 8, it will be crushed by rolling.

[0038] Regarding the shape of the limiting head 31, the limiting head 31 can be a columnar body with a polygonal or elliptical cross-section, such as a prism, an elliptical cylinder, or a columnar body composed of a rectangle and a sector in cross-section, etc. Correspondingly, the shape of the locking hole 61 can be designed to be the same as the cross-sectional shape of the limiting head 31.

[0039] The outer contour of the locking member 6 is preferably provided with an inner concave or outer convex contour to facilitate manual screwing of the locking member 6.

[0040] The grinding device further includes a driver for driving the drive shaft 3 to rotate. The drive shaft 3 is provided with a drive end 32 for connecting to the driver to be driven by the driver. Preferably, the drive shaft 3, the limiting head 31, and the drive end 32 are sequentially connected and integrally structured.

[0041] See Figure 3 and Figure 4 , the driver of the first embodiment of the present invention includes a drive housing 9a and a drive motor 91a. A drive space 911a for installing the drive motor 91a and a powder falling space 912a for communicating with the grinding channel 1a are partitioned inside the drive housing 9a; a feed port 95a is provided at the top of the drive housing 9a. With such a setting, it is convenient for the user to directly pour the required grinding material from the feed port without disassembling the connection between the driver and the grinding device. Preferably, a matching cover 92a is provided at the feed port to cover the feed port. Preferably, the driver further includes a packaging housing 93a for encapsulating the drive motor 91a. A drive port for extending the output shaft of the drive motor 91a is opened at the bottom of the packaging housing 93a. A battery compartment for supplying power to the drive motor 91a is provided inside the packaging housing 93a. Preferably, the output shaft of the drive motor 91a is provided with a socket hole 94a for sleeving the drive end 32.

[0042] Based on the fact that the grinding surface of the inclined grinding surface is inclined, the relative up-and-down position relationship between the grinding head 2 and the grinding ring 8 can be controlled to change the minimum gap between the grinding head 2 and the grinding ring 8, thereby controlling the particle size of the ground particles.

[0043] Therefore, the grinding device of the first embodiment of the present invention further includes a first adjustment component for driving the grinding ring 8 to move up and down;

[0044] The first adjusting component includes a first elastic member 95a for supporting the grinding ring 8 and a first adjusting ring 96a for pressing down the grinding ring 8. A first thread portion 97a for threaded connection with each other is provided on the outer portion of the grinding main body 1 and the inner wall of the first adjusting ring, so that by screwing the first adjusting ring 96a, the first adjusting ring 96a can move along the axial direction of the driving shaft 3. Preferably, the first elastic member 95a can be a spring or a corrugated spring.

[0045] An adjusting linkage member 81a for the first adjusting ring 96a to press down and contact is provided on the side wall of the grinding ring 8, and a first adjusting stroke hole for the adjusting linkage member 81a to move up and down is formed in the side wall of the grinding main body 1, so that the adjusting linkage member can penetrate through the side wall of the grinding main body 1 to abut against the first adjusting ring. Correspondingly, the first adjusting ring 96a is provided with a step surface 961a for pressing down and contacting the adjusting linkage member.

[0046] Therefore, when the inclined grinding surface is inclined upward, when the first adjusting ring 96a is screwed to press down the grinding ring 8, the minimum gap between the grinding ring 8 and the grinding head 2 will become larger. Correspondingly, when the first adjusting ring 96a is screwed in the reverse direction to raise the first adjusting ring 96a, the grinding ring 8 will be jacked up under the action of the first elastic member 95a, so that the grinding ring 8 can rise following the first adjusting ring 96a, and the minimum gap between the grinding ring 8 and the grinding head 2 will become smaller.

[0047] Preferably, in order to make the screwing of the first adjusting ring 96a have an adjusting feel to facilitate the screwing adjustment operation of the user. The adjusting linkage member 81a can be a ball screw. Correspondingly, the first adjusting ring 96a is provided with a tooth surface 962a corresponding to the ball screw.

[0048] See Figure 5 For the driving mode of the driving shaft 3, the present invention also provides a second embodiment. The driver in the second embodiment of the present invention includes a rocker arm and a connecting head 91b provided at one end of the rocker arm. The connecting head 91b is provided with a connecting hole 911b adapted to the driving end 32; the driving end 32 is connected to the connecting head 91b through the connecting hole 911b.

[0049] Since the rocker arm is generally arranged at a right angle relative to the drive shaft 3, the rocker arm will occupy a relatively large lateral space. For the convenience of storage, the rocker arm includes a folding arm 92b and a connecting arm 93b for connecting with the connecting head 91b. One end of the connecting arm 93b is connected to the connecting head 91b, and the other end is hinged to the folding arm 92b to enable the folding arm to swing towards the grinding main body 1. Therefore, the connecting arm 93b can be attached to the side wall of the grinding main body 1, thereby reducing the lateral space occupied by the folding arm. Preferably, a handle 94b for being grasped by a human hand is provided at the tail end of the folding arm 92b, and a handle shaft 941b for mounting the handle 94b is correspondingly provided on the folding arm 92b.

[0050] For controlling the relative vertical position relationship between the grinding head 2 and the grinding ring 8 to change the minimum gap between the grinding head 2 and the grinding ring 8. The grinding device of the second embodiment of the present invention further includes a second adjusting assembly for driving the grinding head 2 to move up and down;

[0051] The second adjusting assembly includes a rotating shaft auxiliary seat 95b for supporting the locking member 6 and a second adjusting ring 96b for driving the rotating shaft auxiliary seat 95b. Second thread portions 97b for threaded connection with each other are provided on the outer part of the grinding main body 1 and the inner wall of the second adjusting ring;

[0052] The rotating shaft auxiliary seat 95b is provided with an auxiliary hole 951b for the drive shaft 3 and the limit head 31 to pass through to avoid affecting the disassembly of the drive shaft 3. The rotating shaft auxiliary seat 95b is provided with a connecting arm 952b connected to the second adjusting ring to move up and down following the second adjusting ring 96b. The up and down movement of the drive shaft 3 can be controlled by screwing the second adjusting ring 96b.

[0053] On the other hand, in order to determine the minimum gap in the gap adjustment range between the grinding head 2 and the grinding ring 8 during assembly, the drive shaft 3 is provided with a limit step surface 33 for defining the maximum rising height of the drive shaft 3, so that when the drive shaft 3 rises to the maximum height, the limit step surface 33 abuts against the bottom surface of the auxiliary frame 4. That is, when screwing the first adjusting ring or the second adjusting ring to make the limit step surface 33 abut against the bottom surface of the auxiliary frame 4, the state where the minimum gap exists between the grinding head 2 and the grinding ring 8 can be determined. With such a setting, the problem that the minimum gap between the grinding head 2 and the grinding ring 8 is unstable due to assembly and processing techniques can be avoided.

[0054] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. A grinding device, characterized in that, It includes a grinding body with a grinding channel inside, a grinding head, and a drive shaft for driving the rotation of the grinding head. An auxiliary frame for stabilizing the lifting of the drive shaft is provided in the grinding channel, and the drive shaft is installed on the auxiliary frame through a quick - mounting component; Among them, the quick - mounting component includes a quick - mounting elastic member and a locking member for restricting the downward movement of the drive shaft. The quick - mounting elastic member is clamped between the grinding head and the auxiliary frame to drive the grinding head to press down; One end of the drive shaft is connected to the grinding head, and the other end is provided with a limiting head with a non - circular cross - section. The locking member is provided with a locking hole adapted to the limiting head for the limiting head to pass through; The auxiliary frame is provided with a rotating shaft hole for the drive shaft and the limiting head to pass through. The limiting head is provided with a locking groove for the rotating movement of the locking member, so that when the limiting head rotates to a preset position at the locking groove, the locking member is clamped between the inner wall of the locking groove and the auxiliary frame.

2. The grinding device according to claim 1, characterized in that, A grinding ring adapted to the grinding head is provided at one port of the grinding channel, and the grinding head is provided with an inclined grinding surface corresponding to the inner wall of the grinding ring.

3. The grinding device according to claim 1, characterized in that The cross - section of the limiting head is polygonal or elliptical.

4. The grinding device according to claim 2, characterized in that, It also includes a driver for driving the rotation of the drive shaft. The drive shaft is provided with a drive end for connecting the driver to be driven by the driver.

5. The grinding device according to claim 4, wherein, The driver includes a drive housing and a drive motor. A drive space for installing the drive motor and a powder - falling space for communicating with the grinding channel are divided inside the drive housing; a feed port is provided at the top of the drive housing.

6. The grinding device according to claim 2 or 5, characterized in that, It also includes a first adjustment component for driving the grinding ring to move up and down; The first adjustment component includes a first elastic member for supporting the grinding ring and a first adjustment ring for pressing down the grinding ring. First thread portions for threaded connection with each other are provided on the outside of the grinding body and the inner wall of the first adjustment ring. An adjustment linkage member for the first adjustment ring to press down and contact is provided on the side wall of the grinding ring, and a first adjustment stroke hole for the adjustment linkage member to move up and down is provided on the side wall of the grinding body.

7. The grinding device according to claim 4, characterized in that, The driver includes a swing arm and a connection head provided at one end of the swing arm. The connection head is provided with a connection hole adapted to the drive end; The drive end is connected to the connection head through the connection hole.

8. The grinding device according to claim 2 or 7, characterized in that, It also includes a second adjustment component for driving the grinding head to move up and down; The second adjustment component includes a rotating shaft auxiliary seat for supporting the locking member and a second adjustment ring for driving the rotating shaft auxiliary seat. Second thread portions for threaded connection with each other are provided on the outside of the grinding body and the inner wall of the second adjustment ring; The rotating shaft auxiliary seat is provided with an auxiliary hole for the drive shaft and the limiting head to pass through. The rotating shaft auxiliary seat is provided with a connecting arm connected to the second adjustment ring to move up and down following the second adjustment ring.

9. The grinding device according to claim 8, characterized in that The swing arm includes a folding arm and a connecting arm for connecting with the connection head. One end of the connecting arm is connected to the connection head, and the other end is hinged to the folding arm to enable the folding arm to swing towards the grinding body.

10. The grinding device according to claim 1, characterized in that, The drive shaft is provided with a stepped surface for defining the maximum lifting height of the drive shaft, so that when the drive shaft rises to the maximum height, the stepped surface abuts against the bottom surface of the auxiliary frame.

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