A grinding device

Abstract

The utility model discloses a kind of grinding devices, including the grinding main body of being equipped with grinding pass, grinding head, for driving the driving shaft rotating of the grinding head, the auxiliary frame for stabilizing the driving shaft lifting is equipped in the grinding pass, the driving shaft is installed in the auxiliary frame by quick-mounting component;The quick-mounting component includes quick-mounting elastic member and lock joint, the quick-mounting elastic member is clamped between grinding head and auxiliary frame;One end of the driving shaft is connected with the grinding head, and the other end is equipped with the limiting head of the section of non-circular, the lock joint is equipped with the lock joint hole compatible with the limiting head;The auxiliary frame is equipped with the rotating shaft hole for the driving shaft and limiting head pass through, the limiting head is equipped with the lock joint groove for the rotating activity of the lock joint, so that the limiting head is rotated to preset position when at the lock joint groove, the lock joint is clamped between the inner wall of the lock joint groove and auxiliary frame. Adopt the utility model, simple structure, and easy to dismount cleaning.

Description

Technical Field

[0001] This utility model relates to the field of grinding tool technology, and in particular to a grinding device. Background Technology

[0002] Among food grinding tools, coffee grinders are commonly used. In existing household coffee grinders, they are generally cylindrical in structure with an internal grinding mechanism. Therefore, during use, the material to be processed must be placed into the grinding chamber, processed by the core grinding components, and then the finished product is output. This process easily leaves material residue inside the chamber, especially noticeable in the joint areas of the precision grinding components. Because the grinding device, as a core component bearing mechanical stress, is usually assembled using high-strength fixing methods, disassembly and maintenance are objectively difficult, directly impacting the efficiency of daily cleaning. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a grinding device with a simple structure and easy assembly, disassembly and cleaning.

[0004] To solve the above-mentioned technical problems, this utility model provides a grinding device, including a grinding body with a grinding channel inside, a grinding head, a drive shaft for driving the grinding head to rotate, an auxiliary frame for stabilizing the lifting and lowering of the drive shaft inside the grinding channel, and the drive shaft being installed on the auxiliary frame through a quick-release assembly;

[0005] The quick-release assembly includes a quick-release elastic element and a locking element that restricts the downward movement of the drive shaft. The quick-release elastic element is clamped between the grinding head and the auxiliary frame to drive the grinding head to press down.

[0006] 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 that matches the limiting head so that the limiting head can pass through.

[0007] The auxiliary frame is provided with a rotating shaft hole through which the drive shaft and the limiting head pass. 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 to the above solution, a grinding ring adapted to the grinding head is provided at one end 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 to the above solution, the cross-section of the limiting head is polygonal or elliptical.

[0010] As an improvement to the above solution, a driver for driving the drive shaft to rotate is also included, wherein the drive shaft is provided with a drive end for connecting to the driver so as to be driven by the driver.

[0011] As an improvement to the above solution, the driver includes a drive housing and a drive motor. The drive housing is divided into a drive space for mounting the drive motor and a powder dropping space for communicating with the grinding channel. The top of the drive housing is provided with a feed port.

[0012] As an improvement to the above solution, a first adjustment component for driving the grinding ring to move up and down is also included;

[0013] The first adjustment assembly includes a first elastic element for supporting the grinding ring and a first adjustment ring for pressing down the grinding ring. The outer side of the grinding body and the inner wall of the first adjustment ring are provided with a first threaded portion for mutual threaded connection. The side wall of the grinding ring is provided with an adjustment linkage element for the first adjustment ring to press down and contact. The side wall of the grinding body is provided with a first adjustment stroke hole for the adjustment linkage element to move up and down.

[0014] As an improvement to the above solution, the driver includes a rocker arm and a connector at one end of the rocker arm, the connector having a connection hole adapted to the driving end;

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

[0016] As an improvement to the above solution, a second adjustment component for driving the grinding head to move up and down is also included;

[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. The outer side of the grinding body and the inner wall of the second adjustment ring are provided with a second threaded portion for mutual threaded connection.

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

[0019] As an improvement to the above solution, the rocker arm includes a folding arm and a connecting arm for connecting to the connector. One end of the connecting arm is connected to the connector, and the other end is hinged to the folding arm to allow the folding arm to swing toward the grinding body.

[0020] As an improvement to the above solution, a powder cup is also included, the mouth of which is connected to the lower port of the grinding body to catch the powder falling from the grinding channel.

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

[0022] This utility model discloses a grinding device, including a grinding body with a grinding channel, a grinding head and a drive shaft. An auxiliary frame is provided in the grinding channel, and the drive shaft is installed on the auxiliary frame through a quick-release assembly. 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 auxiliary frame is provided with a rotating shaft hole for the drive shaft and the limiting head to pass through.

[0023] The quick-release assembly includes a quick-release elastic element and a locking element that restricts the downward movement of the drive shaft. The quick-release elastic element is clamped between the grinding head and the auxiliary frame to drive the grinding head downward. Correspondingly, the locking element has a locking hole that matches the limiting head so that the limiting head can pass through. Therefore, when the locking element can be disengaged from the limiting head, the drive shaft can be disengaged from the rotating shaft hole without restriction, thereby completing the disassembly of the drive shaft and facilitating the tilting of the drive shaft, grinding head, and grinding channel.

[0024] Accordingly, based on the non-circular cross-sectional design of the limiting head, 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, that is, the limiting head and the locking hole are misaligned, so that the locking member is clamped between the inner wall of the locking groove and the auxiliary frame, thereby preventing the locking member from moving along the axial direction of the drive shaft. At the same time, under the action of the quick-release elastic member driving the drive shaft to press down, the locking member will be clamped and cannot rotate on its own, thereby ensuring the installation stability of the drive shaft. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the grinding device in the first embodiment of this utility model;

[0026] Figure 2 This is a cross-sectional structural schematic diagram of the grinding device in the first embodiment of this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of a grinding device equipped with a driver and a powder cup in the first embodiment of this utility model;

[0028] Figure 4 This is a cross-sectional structural schematic diagram of the grinding device equipped with a driver and a powder cup in the first embodiment of this utility model;

[0029] Figure 5 This is a cross-sectional structural schematic diagram of the grinding device in the second embodiment of this utility model. Detailed Implementation

[0030] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0031] See Figure 1 , 2 The first embodiment of this utility model provides a grinding device, including a grinding body 1 with a grinding channel 1a inside, a grinding head 2, and a drive shaft 3 for driving the grinding head 2 to rotate. The grinding channel 1a is provided with an auxiliary frame 4 for stabilizing the lifting and lowering of the drive shaft 3. The drive shaft 3 is installed on the auxiliary frame 4 through a quick-release assembly.

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

[0033] One end of the drive shaft 3 is connected to the grinding head 2, and the other end is provided with a limiting head 31 with a non-circular cross-section. The locking member 6 is provided with a locking hole 61 that matches the limiting head 31 so that the limiting head 31 can pass through. The limiting head with a non-circular cross-section can be in the shape of a polygonal prism, an elliptical cylinder, or a columnar body with a cross-section composed of rectangles and sectors, etc.

[0034] The auxiliary frame 4 is provided with a pivot hole 41 through which the drive shaft 3 and the limiting head 31 pass. The limiting head 31 is provided with a locking groove 311 for the locking member 6 to rotate, so that when the limiting head 31 rotates to a preset position at 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 also includes a powder cup 7, the mouth of which is connected to the lower port 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 a threaded connection or magnetic attraction. For the magnetic connection, both the grinding body 1 and the powder cup 7 are provided with magnets 71 for mutual attraction. More preferably, both the grinding body 1 and the powder cup 7 are provided with multiple magnets 71, and the magnets are circumferentially distributed. Furthermore, for the magnets 71 provided on the grinding body 1 and the powder cup 7, the magnetic poles of adjacent magnets 71 are opposite. This allows the two mutually attracting magnets to be misaligned and spring away when the user twists the powder cup.

[0037] Specifically, a grinding ring 8 adapted to the grinding head 2 is provided at one end of the grinding channel 1a. 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 enters the grinding channel 1a, it will fall between the grinding head 2 and the grinding ring 8 and be crushed.

[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 polygonal prism, an elliptical cylinder, or a columnar body with a cross-section composed of rectangles and sectors. 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 concave or convex to facilitate manual screwing.

[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, so as to be driven by the driver. Preferably, the drive shaft 3, the limiting head 31 and the drive end 32 are connected in sequence and form an integrated structure.

[0041] See Figure 3 and Figure 4 The first embodiment of this utility model includes a drive housing 9a and a drive motor 91a. The drive housing 9a is divided into a drive space 911a for mounting the drive motor 91a and a powder-feeding space 912a for communicating with the grinding channel 1a. The top of the drive housing 9a has a feed inlet 95a, which allows the user to pour the required grinding material directly into the feed inlet without disassembling the connection between the drive and the grinding device. Preferably, a matching cover 92a is provided at the feed inlet to cover it. Preferably, the drive also includes an encapsulation housing 93a for encapsulating the drive motor 91a. The bottom of the encapsulation housing 93a has a drive port for extending the output shaft of the drive motor 91a. The encapsulation housing 93a contains a battery compartment for supplying power to the drive motor 91a. Preferably, the output shaft of the drive motor 91a has a socket 94a for engaging the drive end 32.

[0042] Since the grinding surface is inclined, the minimum gap between the grinding head 2 and the grinding ring 8 can be changed by controlling the relative vertical position between the grinding head 2 and the grinding ring 8, thereby controlling the size of the ground particles.

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

[0044] The first adjustment assembly includes a first elastic element 95a for supporting the grinding ring 8 and a first adjustment ring 96a for pressing down the grinding ring 8. The outer surface of the grinding body 1 and the inner wall of the first adjustment ring are provided with a first threaded portion 97a for mutual threaded connection, so that the first adjustment ring 96a can be moved along the axial direction of the drive shaft 3 by screwing it. Preferably, the first elastic element 95a can be a spring or a wave spring.

[0045] The grinding ring 8 has an adjusting linkage 81a on its side wall for the first adjusting ring 96a to press down and contact it. The grinding body 1 has a first adjusting stroke hole on its side wall for the adjusting linkage 81a to move up and down, so that the adjusting linkage can pass through the side wall of the grinding body 1 to abut against the first adjusting ring. Correspondingly, the first adjusting ring 96a has a stepped surface 961a for pressing down and contacting the adjusting linkage.

[0046] Therefore, when the inclined grinding surface is tilted upwards, turning the first adjusting ring 96a downwards to press down the grinding ring 8 will increase the minimum gap between the grinding ring 8 and the grinding head 2. Correspondingly, when the first adjusting ring 96a is turned in the opposite direction to raise it, the grinding ring 8 will be pushed up by the first elastic member 95a, allowing the grinding ring 8 to rise along with the first adjusting ring 96a, thus reducing the minimum gap between the grinding ring 8 and the grinding head 2.

[0047] Preferably, to provide a tactile feel when turning the first adjusting ring 96a for ease of adjustment by the user, the adjusting linkage 81a can be a ball screw. Accordingly, the first adjusting ring 96a has a toothed surface 962a corresponding to the ball screw.

[0048] See Figure 5 Regarding the driving method of the drive shaft 3, this utility model also provides a second embodiment. The driver of the second embodiment of this utility model includes a rocker arm and a connector 91b provided at one end of the rocker arm. The connector 91b is provided with a connection hole 911b adapted to the drive end 32. The drive end 32 is connected to the connector 91b through the connection hole 911b.

[0049] Since the rocker arm is generally set at a right angle relative to the drive shaft 3, it occupies a large lateral space. To facilitate storage, the rocker arm includes a folding arm 92b and a connecting arm 93b for connecting to the connector 91b. One end of the connecting arm 93b is connected to the connector 91b, and the other end is hinged to the folding arm 92b, allowing the folding arm to swing towards the grinding body 1. Therefore, the connecting arm 93b can be close to the side wall of the grinding body 1, thereby reducing the lateral space occupied by the folding arm. Preferably, the tail end of the folding arm 92b is provided with a handle 94b for a person to grip, and the folding arm 92b is correspondingly provided with a handle shaft 941b for mounting the handle 94b.

[0050] The minimum gap between the grinding head 2 and the grinding ring 8 is changed by controlling the relative vertical positional relationship between them. The second embodiment of the grinding apparatus further includes a second adjustment component for driving the grinding head 2 to move vertically.

[0051] The second adjustment assembly includes a rotating shaft auxiliary seat 95b for supporting the locking member 6 and a second adjustment ring 96b for driving the rotating shaft auxiliary seat 95b. The outer side of the grinding body 1 and the inner wall of the second adjustment ring are provided with a second threaded portion 97b for mutual threaded connection.

[0052] The rotating shaft auxiliary seat 95b is provided with an auxiliary hole 951b for the drive shaft 3 and the limiting head 31 to pass through, so as 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, so as to move up and down with the second adjusting ring 96b. The up and down movement of the drive shaft 3 can be controlled by turning the second adjusting ring 96b.

[0053] On the other hand, in order to determine the minimum gap within the adjustment range between the grinding head 2 and the grinding ring 8 during assembly, the drive shaft 3 is provided with a limiting step surface 33 for limiting the maximum lifting height of the drive shaft 3, so that when the drive shaft 3 is raised to its maximum height, the limiting step surface 33 abuts against the bottom surface of the auxiliary frame 4. That is, when the first adjusting ring or the second adjusting ring is turned so that the limiting step surface 33 abuts against the bottom surface of the auxiliary frame 4, it can be determined that the grinding head 2 and the grinding ring 8 are in a state of minimum gap. This setting can avoid the problem of instability in the minimum gap between the grinding head 2 and the grinding ring 8 due to assembly and processing technology.

[0054] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A grinding apparatus, characterized in that, The invention includes a grinding body with a grinding channel, a grinding head, and a drive shaft for driving the grinding head to rotate. The grinding channel is provided with an auxiliary frame for stabilizing the lifting and lowering of the drive shaft. The drive shaft is mounted to the auxiliary frame via a quick-release assembly. The quick-release assembly includes a quick-release elastic element and a locking element that restricts the downward movement of the drive shaft. The quick-release elastic element 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 that matches the limiting head so that the limiting head can pass through. The auxiliary frame is provided with a rotating shaft hole through which the drive shaft and the limiting head pass. 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.

2. The grinding apparatus as described in claim 1, characterized in that, A grinding ring adapted to the grinding head is provided at one end 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 polishing apparatus as claimed in claim 1, wherein The cross-section of the limiting head is polygonal or elliptical.

4. The polishing apparatus as claimed in claim 2, wherein It also includes a driver for driving the drive shaft to rotate, the drive shaft having a drive end for connecting to the driver so as to be driven by the driver.

5. The polishing apparatus as claimed in claim 4, wherein The driver includes a drive housing and a drive motor. The drive housing is divided into a drive space for mounting the drive motor and a powder dropping space for communicating with the grinding channel. The top of the drive housing is provided with a feed port.

6. The polishing apparatus as claimed in claim 2 or 5, wherein It also includes a first adjustment component for driving the grinding ring to move up and down; The first adjustment assembly includes a first elastic element for supporting the grinding ring and a first adjustment ring for pressing down the grinding ring. The outer side of the grinding body and the inner wall of the first adjustment ring are provided with a first threaded portion for mutual threaded connection. The side wall of the grinding ring is provided with an adjustment linkage element for the first adjustment ring to press down and contact. The side wall of the grinding body is provided with a first adjustment stroke hole for the adjustment linkage element to move up and down.

7. The polishing apparatus as claimed in claim 4, wherein The driver includes a rocker arm and a connector at one end of the rocker arm, the connector having a connection hole adapted to the driver end; The drive end is connected to the connector through the connection hole.

8. The polishing apparatus as claimed in claim 7, wherein It also includes a second adjustment component for driving the grinding head to move up and down; 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. The outer side of the grinding body and the inner wall of the second adjustment ring are provided with a second threaded portion for mutual threaded connection. The rotating shaft auxiliary seat is provided with an auxiliary hole for the drive shaft and the limiting head to pass through, and the rotating shaft auxiliary seat is provided with a connecting arm connected to the second adjusting ring to move up and down with the second adjusting ring.

9. The polishing apparatus as claimed in claim 8, wherein The rocker arm includes a folding arm and a connecting arm for connecting to the connector. One end of the connecting arm is connected to the connector, and the other end is hinged to the folding arm to allow the folding arm to swing toward the grinding body.

10. The polishing apparatus as set forth in claim 1, wherein The drive shaft is provided with a stepped surface for limiting the maximum lifting height of the drive shaft, such that when the drive shaft is raised to the maximum height, the stepped surface abuts against the bottom surface of the auxiliary frame.

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