Grinding main machine

Abstract

The utility model discloses a grinding main machine which is characterized in that a rotating signal generating device is arranged on a rotating shaft of a power assembly, a rotating signal sensing device is arranged at the corresponding position of a shell assembly, and the rotating signal sensing device collects signals sent by the rotating signal generating device; a control chip is arranged on a circuit board assembly, receives information sent by a rotating signal induction device and controls a power assembly to rotate in the second direction opposite to the grinding direction according to the information so that a grinding main machine can rotate reversely immediately when jamming occurs or suddenly stops working. And the grinding main machine and the charging barrel matched with the grinding main machine can be effectively prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to a grinder, in particular to a grinding host machine. Background Art

[0002] Electric grinders are common small appliances in daily life, and are often used to grind coffee beans, pepper, black pepper and other ingredients, so that people can obtain ingredients with the best flavor. When grinding harder ingredients such as cinnamon, the grinding head of a general electric grinder is easily blocked, which in turn causes damage to the grinder.

[0003] The Chinese invention patent with application number 201910161121.7 discloses an "electric grinder with replaceable barrel and its grinding scheme". The electric grinder includes a power source, a driving machine with a reverse release function, and a barrel assembly. When the output current of the driving machine is greater than the set value, the driving machine drives the grinding head to reverse. When the output current of the driving machine is not greater than the set value, the driving machine drives the grinding head to rotate forward to realize the reverse release function of the driving machine. When the electric grinder encounters a material with higher hardness, it can rotate in both directions to reduce the damage rate of the grinder. However, there are many factors that affect the change of output current, such as long-term operation of the motor or changes in the battery. Therefore, it is not accurate to judge the forward and reverse control only by the output current. Utility Model Content

[0004] The purpose of the utility model is to solve the problem of the electric grinder being damaged due to the grinding head being stuck when grinding hard food. To solve the above problem, the utility model provides a grinding host, which can accurately determine whether a jam occurs and rotate in the opposite direction when a jam occurs, thereby avoiding damage to the grinding host.

[0005] The utility model specifically adopts the following technical solutions:

[0006] A grinding host, characterized in that it includes a shell assembly, a switch assembly, a power assembly, a circuit board assembly, a power assembly, a transmission assembly and a connecting assembly; the switch assembly is installed on the shell assembly, and the power assembly, the circuit board assembly, the transmission assembly and the connecting assembly are accommodated; the switch assembly, the power assembly, the circuit board assembly and the power assembly are electrically connected; one end of the rotating shaft of the power assembly is transmission-connected to the transmission assembly; the transmission assembly is transmission-connected to the connecting assembly; a rotation signal generating device is provided on the rotating shaft of the power assembly, and a rotation signal sensing device is provided at a corresponding position of the shell assembly, and the rotation signal sensing device collects the signal emitted by the rotation signal generating device; a control chip is provided on the circuit board assembly, and the control chip receives information emitted from the rotation signal sensing device, and controls the power assembly to rotate in a second direction opposite to the grinding direction according to the information.

[0007] When the grinding host is working normally, the user presses the switch component, the circuit is connected, the power component rotates in the grinding direction, the rotation signal generating device is installed on the rotating shaft of the power component, and rotates along with the rotation of the power component; the rotation signal sensing device is arranged at the position of the housing component corresponding to the rotation signal generating device, and can collect the signal that is constantly changing due to the continuous rotation of the rotation signal generating device. Once the grinder is blocked, the rotation speed of the power component is reduced or even stopped, and the interval time between the changing signals is extended or even the next signal cannot be sensed. The rotation signal sensing device thus determines that the grinder is blocked or stops working, and sends information to the control chip, and the control chip controls the power component to rotate in the second direction opposite to the grinding direction, so that the grinding host exits the blocking state, effectively extending the service life of the grinding host. When the grinding host suddenly stops rotating, the rotation signal sensing device will also send information to the control chip, so that the control chip controls the power component to rotate in the second direction, so as to avoid the power component from being stuck due to sudden stop under high-speed rotation.

[0008] Furthermore, the housing assembly includes a handle portion and a barrel portion, the barrel portion is arranged below the handle portion; the switch assembly is installed on the upper end of the handle portion, the power supply assembly, the circuit board assembly, and the transmission assembly are accommodated in the handle portion, and the connection assembly is rotatably arranged on the lower end of the handle portion. The arrangement of the handle portion and the barrel portion reduces the manufacturing difficulty, and the assembly is not complicated at the same time. When an abnormality occurs to the internal parts, it is also convenient to disassemble and repair or replace the parts.

[0009] Furthermore, the rotation signal generating device is arranged above the power assembly.

[0010] Furthermore, the rotation signal sensing device is arranged in the handle portion. The position selection of the rotation signal sensing device and the rotation signal generating device makes the overall structure more compact.

[0011] Furthermore, the rotation signal sensing device is a Hall sensor.

[0012] Furthermore, the rotation signal generating device is a magnetic strip.

[0013] Furthermore, the rotation signal generating device is a magnetic ring having a plurality of north and south poles.

[0014] Furthermore, the number of the north and south poles of the magnetic ring is 2 respectively.

[0015] Furthermore, the number of north and south poles of the magnetic ring is 4. Increasing the number of magnetic poles enables the rotation signal generating device to send more signals each time the power assembly rotates one circle, thereby improving the accuracy of sensing.

[0016] Furthermore, the power assembly is a motor assembly, and the transmission assembly is a gear set.

[0017] Furthermore, the connecting assembly includes a door lock component and a driving component.

[0018] The grinding main machine is provided with a rotation signal generating device and a rotation signal sensing device and cooperates with each other, so that the grinding main machine can be reversed immediately when it is stuck or stops working suddenly, which can effectively avoid damage to the grinding main machine and the grinding barrel working with the grinding main machine, and effectively increase the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a stereogram of an embodiment of the utility model;

[0021] Figure 2 It is a cross-sectional view of an embodiment of the utility model;

[0022] Figure 3 This is a front view of the rotation signal generating device of the first embodiment of the utility model;

[0023] Figure 4 It is a front view of the rotation signal generating device of the second embodiment of the utility model. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] like Figure 1 As shown, a grinding machine includes a housing assembly and a switch assembly 2, wherein the housing assembly includes a handle portion 11 and a barrel portion 12, wherein the barrel portion 12 is disposed below the handle portion 11. Figure 2 As shown, the switch assembly 2 is installed at the upper end of the handle portion 11, and the handle portion 11 contains a power supply assembly 8, a circuit board assembly 3 with a control chip, a motor assembly 4, and a gear set 5; the switch assembly 2, the power supply assembly, the circuit board assembly 3, and the motor assembly 4 are electrically connected; one end of the rotating shaft of the motor assembly 4 is transmission-connected to the gear set 5; the gear set 5 is transmission-connected to the connecting assembly including a door lock 91 and a driving member 92, and the connecting assembly can drive the detachable barrel (not shown in the figure) to rotate; a magnetic strip 6 is provided on the rotating shaft of the motor assembly 4 and located above the motor assembly 4 as the rotating A signal generating device, a rotation signal sensing device is arranged at a corresponding position in the handle portion 111, and the rotation signal sensing device is a Hall sensor 7. The magnetic strip 6 rotates with the rotation of the rotating shaft, and then repeatedly sends out the change signal of the interaction between the north and south poles, and the Hall sensor 7 continuously collects the above-mentioned signal; when the motor assembly 4 suddenly stops rotating due to a blockage or a sudden power failure, the interval of the change signal collected by the Hall sensor 7 is extended or the next change signal is no longer received, thereby judging that the grinder is blocked or stops working, and sending information to the control chip, and the control chip controls the motor assembly 4 to rotate in a second direction opposite to the grinding direction.

[0027] like Figure 3As shown, in another embodiment, the rotation signal generating device is a magnetic ring 61, and the number of the north and south poles of the magnetic ring is 2 respectively.

[0028] like Figure 4 As shown, in another embodiment, the rotation signal generating device is a magnetic ring 62, and the number of the north and south poles of the magnetic ring is 4 respectively.

[0029] Finally, it should be noted that the embodiments of the present invention disclose only preferred embodiments of the present invention, which are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A grinding host, characterized in that: It includes a shell component, a switch component, a power component, a circuit board component, a power component, a transmission component and a connecting component; the switch component is installed on the shell component, and the power component, the circuit board component, the transmission component and the connecting component are accommodated; the switch component, the power component, the circuit board component and the power component are electrically connected; one end of the rotating shaft of the power component is transmission-connected to the transmission component; the transmission component is transmission-connected to the connecting component; a rotation signal generating device is provided on the rotating shaft of the power component, and a rotation signal sensing device is provided at a corresponding position of the shell component, and the rotation signal sensing device collects the signal emitted by the rotation signal generating device; a control chip is provided on the circuit board component, and the control chip receives information emitted from the rotation signal sensing device, and controls the power component to rotate in a second direction opposite to the grinding direction according to the information.

2. The grinding host according to claim 1, characterized in that: The shell assembly includes a handle portion and a barrel portion, and the barrel portion is arranged below the handle portion; the switch assembly is installed on the upper end of the handle portion, and the power supply assembly, the circuit board assembly, and the transmission assembly are accommodated in the handle portion. The connecting assembly is rotatably arranged at the lower end of the handle portion, and the rotation signal sensing device is arranged in the handle portion.

3. The grinding host according to claim 1, characterized in that: The rotation signal generating device is arranged above the power component.

4. The grinding host according to claim 1, characterized in that: The rotation signal sensing device is a Hall sensor.

5. The grinding host according to claim 1, characterized in that: The rotation signal generating device is a magnetic strip.

6. The grinding host according to claim 1, characterized in that: The rotation signal generating device is a magnetic ring with a plurality of north and south poles.

7. The grinding host according to claim 6, characterized in that: The number of the north and south poles of the magnetic ring is 2 respectively.

8. The grinding host according to claim 6, characterized in that: The number of north and south poles of the magnetic ring is four respectively.

9. The grinding host according to any one of claims 1 to 8, characterized in that: The power assembly is a motor assembly, and the transmission assembly is a gear set.

10. The grinding host according to claim 9, characterized in that: The connecting component comprises a door lock component and a driving component.

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