Home knob of coffee bean grinder

Abstract

The utility model discloses a return knob of coffee bean grinder, including knob, knob adjusting lever, adjusting screw, cavity lid and scale indicator dial, cavity lid is installed in the machine body, the scale indicator dial is installed at the one end of machine body, adjusting screw is installed in cavity lid through screw thread, and the knob adjusting lever is installed in the cavity lid through screw thread. The knob adjusting rod is installed on the adjusting screw rod, the knob is installed on the knob adjusting rod, a plurality of first clamping teeth which are distributed at equal intervals are arranged on the inner side of the knob, a clamping tooth groove is formed between every two adjacent first clamping teeth, a plurality of second clamping teeth which are distributed at equal intervals are arranged on the outer side of the knob adjusting rod, and a clamping tooth groove is formed between every two adjacent second clamping teeth. The second clamping teeth are used in cooperation with the clamping tooth grooves. When the cutter is reset (zero), the knob is detached firstly, the cutter is reset (zero) through the knob adjusting rod, and then the knob is installed again. The method has the advantages of simplicity in operation, high homing (zero) precision and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee bean grinders, and mainly relates to a return knob of a coffee bean grinder. Background Art

[0002] A coffee bean grinder is a grinding tool that cuts and grinds coffee into powder when a motor drives a mechanical cutter to rotate rapidly. The grinder consists of two circular toothed blades. The toothed blades "tear" the beans instead of "cutting" them in a whirlwind manner. This not only grinds out extremely fine and uniform coffee powder, but also the powder is porous and irregular particles in the shape of cake crumbs, so that hot water can penetrate each coffee powder evenly and thoroughly.

[0003] A coffee bean grinder generally grinds coffee beans by rotating a cutter driven by a motor, and the cutter generally consists of an upper cutter disc and a lower cutter disc. The upper cutter disc and the lower cutter disc of the existing cutter are spaced at a fixed distance, so that only coffee powder with uniform particle size can be ground during coffee bean grinding, and the particle size of the coffee powder cannot be changed according to customer needs. Based on this, a number of grinders with adjustable cutter spacing have appeared on the market, such as a prior application of the applicant (publication number: CN215272136U). After long-term use, the cutter spacing of the grinder with adjustable cutter spacing will have errors, and the cutter needs to be re-positioned (zeroed). However, this type of adjustable cutter machine has a relatively complex structure and relatively more parts, and the cutter cannot be re-positioned (zeroed) or the re-positioning (zeroing) operation of the cutter is relatively cumbersome, and the re-positioning (zeroing) accuracy is not high. Utility Model Content

[0004] The utility model aims to solve at least one problem existing in the prior art. To this end, the purpose of the utility model is to provide a return knob for a coffee bean grinder.

[0005] A return knob for a coffee bean grinder comprises a knob, a knob adjustment rod, an adjustment screw, a cavity cover and a scale indicator disk, wherein the cavity cover is installed inside a machine body, the scale indicator disk is installed at one end of the machine body, the adjustment screw is installed in the cavity cover through a thread, the knob adjustment rod is installed on the adjustment screw, and the knob is installed on the knob adjustment rod, a plurality of first latch teeth distributed at equal intervals are arranged on the inner side of the knob, a latch tooth groove is formed between two adjacent first latch teeth, a plurality of second latch teeth distributed at equal intervals are arranged on the outer side of the knob adjustment rod, and the second latch teeth cooperate with the latch tooth groove.

[0006] Preferably, a limit member and an indicator member are provided on the knob, the limit member, the indicator member and the knob are an integrated structure, and the center of the limit member is aligned with the center of the indicator member.

[0007] Preferably, a limiting block is provided on the cavity cover, and the limiting block is used in conjunction with a limiting member.

[0008] Preferably, a positioning bead is provided on the knob adjustment rod, and a plurality of equally spaced dividing grooves are provided on the cavity cover, and the dividing grooves are used in conjunction with the positioning bead.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The utility model comprises a knob, a knob adjusting rod, an adjusting screw, a cavity cover and a scale indicator plate. When returning a tool to zero, the knob is first disassembled, the tool is returned to zero by means of the knob adjusting rod, and then the knob is reinstalled. The utility model has the advantages of fewer parts, simple operation, high return (zero) accuracy and the like.

[0011] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional diagram of the utility model;

[0013] Figure 2 This is a cross-sectional view of the utility model;

[0014] Figure 3 This is an exploded view of the utility model;

[0015] Figure 4 This is a three-dimensional diagram of the knob of the utility model.

[0016] In the figure: 1. knob, 2. knob adjustment rod, 3. adjustment screw, 4. cavity cover, 5. scale indicator plate, 6. first latch tooth, 7. latch tooth groove, 8. second latch tooth, 9. limit member, 10. indicator member, 11. limit block, 12. positioning bead, 13. dividing groove, 14. upper cutter disc seat, 15. upper cutter disc, 16. lower cutter disc, 100. machine body. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0018] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices consistent with some aspects of the present application as detailed in the appended claims.

[0019] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which the utility model belongs. The words "one" or "one" and the like used in the specification and claims of this application do not indicate a quantitative limitation, but indicate the existence of at least one. "Multiple" includes two, which is equivalent to at least two. "Including" or "including" and the like mean that the elements or objects appearing in front of "including" or "including" include the elements or objects listed after "including" or "including" and their equivalents, and do not exclude other elements or objects. "Connected" or "connected" and the like are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect. The singular forms of "one", "said" and "the" used in the specification and the appended claims of this application are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0020] Please refer to Figure 1-4 A return knob 1 of a coffee bean grinder comprises a knob 1, a knob adjusting rod 2, an adjusting screw 3, a cavity cover 4 and a scale indicator disk 5 (the scale indicator disk 5 is provided with scales), the cavity cover 4 is fixedly installed inside a machine body 100 by screws, the scale indicator disk 5 is snap-fitted and installed at one end of the machine body 100, the adjusting screw 3 is threadedly installed in the cavity cover 4, that is, the outer surface of the adjusting screw 3 is provided with an external thread, the cavity cover 4 is provided with an internal thread matched with the external thread of the adjusting screw 3, the knob adjusting rod 2 is fixedly installed on the adjusting screw 3 by screws, the knob 1 is installed on the knob adjusting rod 2, and the knob 1, the knob adjusting rod 2 and the adjusting screw 3 are three parts. The upper blade disc seat 14, the upper blade disc 15, the lower blade disc 16, bearings, motors, positioning pins, springs, etc. are installed inside the machine body 100. Reference may be made to a prior application (publication number: CN215272136U) of the present applicant. The knob 1 is turned to control the knob adjustment rod 2 and the adjustment screw 3 to rotate, thereby controlling the lateral movement of the adjustment screw 3. The lateral movement of the adjustment screw 3 promotes the lateral movement of the upper blade disc seat 14 and the upper blade disc 15, thereby controlling the distance between the upper blade disc 15 and the lower blade disc 16. When the coffee beans are ground, the distance between the upper blade disc 15 and the lower blade disc 16 changes, and the size of the ground particles also changes accordingly.

[0021] Specifically, a plurality of equally spaced first latch teeth 6 are provided on the inner side of the knob 1, and a latch tooth groove 7 is formed between two adjacent first latch teeth 6. A plurality of equally spaced second latch teeth 8 are provided on the outer side of the knob adjustment rod 2. The second latch teeth 8 are used in conjunction with the latch tooth groove 7. The second latch teeth 8 can be inserted into the latch tooth groove 7 to form a fixed fit, and then the knob 1 can be fastened to the knob adjustment rod 2 under the action of the screw, that is, the cooperation between the second latch teeth 8 and the latch tooth groove 7 completes the axial fixation of the knob 1 to the knob adjustment rod 2, and the screw completes the lateral fixation of the knob 1 to the knob adjustment rod 2, and the knob adjustment rod 2 can be driven to rotate while the knob 1 is rotated.

[0022] Furthermore, a limit member 9 and an indicator member 10 are provided on the knob 1. The limit member 9, the indicator member 10 and the knob 1 are an integrated structure. The center of the limit member 9 is aligned with the center of the indicator member 10. When returning to the position (zero), the indicator member 10 is aligned with the "O" position of the scale indicator disk 5.

[0023] Furthermore, a limit block 11 is provided on the cavity cover 4, and the limit block 11 is used in conjunction with the limit piece 9. The limit block 11 limits the rotation angle of the knob 1. When the knob 1 is rotated to the limit (clockwise or counterclockwise), the limit block 11 and the limit piece 9 will touch each other to play a limiting role. When the indicator 10 is aligned with the "O" position of the scale indicator disk 5, the right wall of the limit block 11 is in contact with the limit piece 9.

[0024] Furthermore, a positioning bead 12 is provided on the knob adjustment rod 2, and a plurality of equally spaced dividing grooves 13 are provided on the cavity cover 4. The dividing grooves 13 are used in conjunction with the positioning bead 12. The positioning bead 12 can roll along the dividing groove 13. When the positioning bead 12 rotates along the dividing groove 13, a "sizzling" sound is generated, reminding the user that the knob adjustment rod 2 has started to rotate.

[0025] The utility model is a return knob 1 of a coffee bean grinder, and the working principle is described in conjunction with the accompanying drawings:

[0026] When the return (zero) operation is required, first remove the knob 1 from the knob adjusting rod 2, and then turn the knob adjusting rod 2. The knob adjusting rod 2 drives the adjusting screw 3 to rotate. The adjusting screw 3 will move laterally while rotating. The adjusting screw 3 will push the upper cutter disc seat 14 to slide laterally along the motor shaft while moving laterally. The upper cutter disc 15 also moves due to the lateral sliding of the upper cutter disc seat 14, changing the spacing between the upper cutter disc 15 and the lower cutter disc 16, so that the upper cutter disc 15 and the lower cutter disc 16 hit the cutter (there will be a sound when hitting the cutter). When the sound is heard, turn the knob adjusting rod 2 in the opposite direction (the number of turns is 2-3 turns, which can be changed according to actual conditions). At this time, the return (zero) is completed, and the knob 1 is fixed to the knob adjusting rod 2 again, the indicator 10 is aligned with the "O" position of the scale indicator disc 5, the second tooth 8 is inserted into the tooth groove 7, and finally the screw is tightened.

[0027] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A return knob for a coffee bean grinder, comprising a knob, a knob adjustment rod, an adjustment screw, a cavity cover and a scale indicator plate, wherein the cavity cover is installed inside a machine body, the scale indicator plate is installed at one end of the machine body, the adjustment screw is installed in the cavity cover by a thread, the knob adjustment rod is installed on the adjustment screw, and the knob is installed on the knob adjustment rod, characterized in that: The knob is provided with a plurality of first latch teeth distributed at equal intervals on the inner side, a latch tooth groove is formed between two adjacent first latch teeth, and the knob adjusting rod is provided with a plurality of second latch teeth distributed at equal intervals on the outer side, the second latch teeth cooperate with the latch tooth groove.

2. The return knob of a coffee bean grinder according to claim 1, characterized in that: A limit member and an indicator member are arranged on the knob. The limit member, the indicator member and the knob are an integrated structure. The center of the limit member is aligned with the center of the indicator member.

3. The return knob of a coffee bean grinder according to claim 1, characterized in that: A limiting block is arranged on the cavity cover, and the limiting block is used in conjunction with a limiting member.

4. The return knob of a coffee bean grinder according to claim 1, characterized in that: The knob adjusting rod is provided with a positioning bead, and the cavity cover is provided with a plurality of equally spaced dividing grooves, which are used in conjunction with the positioning bead.

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