Knob limit adjusting mechanism
By designing the knob limit adjustment mechanism, the adjustment and zeroing operation of the grinder tool spacing are simplified, the adjustment error and complex operation in the prior art are solved, and the particle size adjustment is achieved with high precision.
Patent Information
- Application Number
- CN202421260588.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-06-04
AI Technical Summary
After long-term use of existing bean grinders with adjustable cutter distance, errors are prone to tool adjustment spacing, making it difficult to accurately adjust the particle size of coffee powder, and the adjustment process is complicated and cumbersome.
A knob limit adjustment mechanism is designed, including a limiting member, an adjustment shaft, a bearing and a knob main body. Through the adjustable parts and indicators on the knob main body, precise adjustment and zeroing operation of tool spacing are achieved.
This design simplifies the tool adjustment process, reduces the number of parts, is simpler to operate, and can achieve high-precision tool spacing adjustment and zeroing, solving the problems of adjustment errors and complex operations in the prior art.
Smart Images
Figure CN222565655U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of knobs, and mainly relates to a knob limit adjustment mechanism. Background Art
[0002] A coffee bean grinder generally grinds coffee beans by rotating a cutter driven by a motor. 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. Therefore, only coffee powder with a uniform particle size can be ground out during coffee bean grinding, and the particle size of the coffee powder cannot be changed according to customer needs.
[0003] Based on this, a number of grinders with adjustable cutter spacing have appeared on the market. The distance between the cutters can be adjusted by adjusting the knob, and then different sizes of coffee powder can be ground. However, after long-term use, the cutter spacing of the grinder with adjustable cutter spacing will have errors, so the cutter needs to be reset to zero. However, this type of adjustable cutter machine has a relatively complex structure and relatively more parts. It has problems such as the inability to reset the cutter to zero or the cumbersome reset operation of the cutter, and the low zeroing accuracy. 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 knob limit adjustment mechanism.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A knob limit adjustment mechanism comprises a limit piece, an adjustment shaft and a bearing, wherein the limit piece is arranged on a machine body, the adjustment shaft is arranged inside the machine body and one end thereof is passed through the limit piece, and the bearing is arranged between the limit piece and the adjustment shaft; and further comprises a knob body, wherein the knob body is detachably arranged on the adjustment shaft and can rotate relative to the limit piece, the knob body comprises a knob and an adjustable piece, the knob and the adjustable piece are fixed by screws, the knob is provided with a plurality of assembly holes, including a first assembly hole and a second assembly position hole, the adjustable piece is provided with a plurality of arc-shaped notches, including a first arc-shaped notch and a second arc-shaped notch, the first assembly hole is located in the first arc-shaped notch, the screw is assembled in the first assembly hole and the first arc-shaped notch, and the second assembly position hole is located in the second arc-shaped notch.
[0007] Further on the basis of the above solution, an indicator is arranged on the outer wall of the adjustable part, and the indicator is used in conjunction with the scale area on the body.
[0008] Further on the basis of the above solution, the limiting member is provided with a plurality of tooth-shaped protrusions distributed along the circumference and at equal intervals.
[0009] Further on the basis of the above scheme, the adjustable part is provided with a limiting boss, the limiting part is provided with two limiting blocks, the limiting blocks are provided on both sides of the limiting part, and the limiting part is used in conjunction with the limiting boss.
[0010] Further on the basis of the above solution, the knob is provided with an eight-pointed star hole and a connecting hole, and the eight-pointed star hole and the connecting hole are interconnected.
[0011] Further on the basis of the above scheme, a chuck is provided at one end of the adjusting shaft, the cross section of the chuck is square, and the chuck is used in conjunction with the eight-pointed star hole.
[0012] Further on the basis of the above solution, the arc angle of the first arc-shaped notch is 120°.
[0013] Further on the basis of the above solution, the adjusting shaft is provided with a nut at one end of the chuck.
[0014] Compared with the prior art, the beneficial effects of the utility model are:
[0015] The utility model comprises a limiter, an adjusting shaft, a bearing and a knob body, and achieves the purpose of zeroing by zeroing the tool and the adjustable part, and has the advantages of fewer parts, simple operation, high zeroing accuracy and the like.
[0016] 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
[0017] Figure 1 This is a three-dimensional diagram of the knob limit adjustment mechanism of the utility model;
[0018] Figure 2 This is a cross-sectional view of the knob limit adjustment mechanism of the utility model;
[0019] Figure 3 This is an exploded view of the knob limit adjustment mechanism of the utility model;
[0020] Figure 4 This is an exploded view of the knob body of the utility model;
[0021] Figure 5 A three-dimensional diagram of a coffee bean grinder to which the utility model is applied;
[0022] Figure 6 It is a partial cross-sectional view of a coffee bean grinder to which the utility model is applied.
[0023] In the figure: 1. limit member, 11. toothed protrusion, 12. limit stopper, 2. adjusting shaft, 21. clamp, 22. nut, 3. bearing, 4. knob body, 41. knob, 411. first assembly hole, 412. second assembly hole, 413. eight-pointed star hole, 414. connecting hole, 42. adjustable member, 421. first arc-shaped notch, 422. second arc-shaped notch, 423. indicator, 424. limit boss, 43. screw;
[0024] 5. First slider, 6. Second slider, 7. Lower tool holder, 8. Lower tool disc, 100. Machine body, 1001. Scale area. DETAILED DESCRIPTION
[0025] 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.
[0026] 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.
[0027] 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.
[0028] Please refer to Figure 1-6A knob 41 limit adjustment mechanism includes a limit member 1, an adjustment shaft 2 and a bearing 3. The limit member 1 is fixedly arranged on a body 100 by a fastener. The adjustment shaft 2 is movably arranged inside the body 100 and one end of the adjustment shaft 2 is passed through the limit member 1. The other end of the adjustment shaft 2 is connected to a first slider 5. The bearing 3 is arranged between the limit member 1 and the adjustment shaft 2. The bearing 3 reduces the friction coefficient of the adjustment shaft 2 during the movement and ensures the rotation accuracy of the adjustment shaft 2.
[0029] Specifically, by rotating the adjustment shaft 2, the adjustment shaft 2 will drive the first slider 5 to move to the left, and the first slider 5 will squeeze the second slider 6 when moving to the left (the contact surfaces of the first slider 5 and the second slider 6 are matching inclined surfaces), so the second slider 6 will move upward, and then lift the lower tool holder 7 and the lower cutter disc 8, so that the lower tool holder 7 and the lower cutter disc 8 are close to the upper cutter disc, thereby changing the distance between the upper and lower cutter discs 8 to become smaller; conversely, the distance between the upper and lower cutter discs 8 can be increased. The main improvement of this application lies in the knob 41, so the tool adjustment principle is only briefly described in this application.
[0030] A knob 41 limit adjustment mechanism also includes a knob body 4, which is detachably arranged on the adjustment shaft 2 through a fastener and can rotate relative to the limit member 1. The knob body 4 includes a knob 41 and an adjustable member 42, and the knob 41 and the adjustable member 42 are fixed by screws 43. The knob 41 is provided with two kinds of assembly holes, including two first assembly holes 411 and a second assembly position hole 412. The first assembly hole 411 is provided with a thread used in conjunction with the screw 43, and the second assembly hole 412 is provided with a thread used in conjunction with the screw 43. A spring and a positioning bead can be assembled in the positioning hole 412 (the spring is placed first, and then the positioning bead is installed, which is not shown in the figure). Two arc-shaped slots are provided on the adjustable part 42, including a first arc-shaped slot 421 and a second arc-shaped slot 422. The first assembly hole 411 is located in the first arc-shaped slot 421. The screw 43 is assembled in the first assembly hole 411 and the first arc-shaped slot 421 to fix the knob 41 and the adjustable part 42 together. The second assembly hole 412 is located in the second arc-shaped slot 422.
[0031] Furthermore, an indicator 423 is provided on the outer wall of the adjustable part 42, and the indicator 423 is used in conjunction with the scale area 1001 on the body 100. The scale area 1001 is drawn with scale lines distributed at equal intervals. When returning to zero, the indicator 423 is aligned with the scale 0 line.
[0032] In this embodiment, the indicator 423 is a groove, and the groove is sprayed with a color different from that of the adjustable component 42 .
[0033] Furthermore, the limit member 1 is provided with a plurality of tooth-like protrusions 11 distributed along the circumference and at equal intervals. The tooth-like protrusions 11 are used in conjunction with the positioning beads. When the knob body 4 is rotated, the positioning beads will move with the knob body 4, and the positioning beads will rub against the tooth-like protrusions 11, and a "sizzling" prompt sound will be emitted, reminding the user that the knob body 4 has started to rotate and the distance between the upper and lower blade discs 8 has begun to be adjusted.
[0034] Furthermore, a limiting boss 424 is provided on the adjustable part 42, and two limiting blocks 12 are provided on the limiting part 1. The limiting blocks 12 are provided on both sides of the limiting part 1, and are used in conjunction with the limiting boss 424 on the limiting part 1. When the limiting boss 424 rotates to the limiting part 1, the limiting part 1 can prevent the limiting boss 424 from continuing to move, thereby limiting the rotation angle of the knob body 4. It should be noted that the maximum angle between the two limiting columns is greater than the scale line angle, so that the spacing between the upper and lower blade discs 8 can be adjusted to the maximum.
[0035] Furthermore, an eight-pointed star hole 413 and a connecting hole 414 are provided on the knob 41, and the eight-pointed star hole 413 and the connecting hole 414 are interconnected and can be used to assemble fasteners; a clamping head 21 is provided at one end of the adjusting shaft 2, and the cross-section of the clamping head 21 is square. The clamping head 21 is used in conjunction with the eight-pointed star hole 413, and the clamping head 21 can be clamped into the eight-pointed star hole 413. After the clamping head 21 can be clamped into the eight-pointed star hole 413, the knob body 4 and the adjusting shaft 2 can be fixed together using fasteners.
[0036] The four inner angles of the clamping head 21 are all 90°, and the four inner angles of the eight-pointed star hole 413 are all 45°, so when the clamping head 21 and the eight-pointed star hole 413 are matched, they can be matched again every time they rotate 45°.
[0037] Furthermore, the arc of the first arc-shaped slot 421 is 120°, that is, the adjustable member 42 can rotate relative to the knob 41, and the maximum rotation range is 120°. Since 120° is greater than the matching angle of 45°, the adjustable range of the adjustable member 42 is sufficient.
[0038] The adjusting shaft 2 is provided with a nut 22 at one end of the clamping head 21 , and the adjusting shaft 2 is provided with a thread used in conjunction with the nut 22 .
[0039] The utility model is a knob 41 limit adjustment mechanism, and its working principle is described in conjunction with the accompanying drawings:
[0040] First, rotate the knob body 4 to adjust the distance between the upper blade disc and the lower blade disc 8 to 0 (a "bang" sound will be heard when the upper blade disc and the lower blade disc 8 touch each other, which means that the distance between the upper blade disc and the lower blade disc 8 is 0); secondly, remove the lower knob body 4 and loosen the screw 43. At this time, the adjustable part 42 can be rotated and adjusted, and then the adjustable part 42 and the knob 41 are installed back on the adjusting shaft 2; then, rotate the adjustable part 42 to align the indicator 423 of the adjustable part 42 with the scale 0 line to complete the zeroing of the tool; finally, remove the knob body 4, keep the relative position of the adjustable part 42 and the knob 41 unchanged, tighten the screw 43 to fix the adjustable part 42 and the knob 41 together, assemble the spring and the positioning ball, and then install the knob body 4 back on the adjusting shaft 2 and complete the fixation, completing the zeroing of the knob body 4 and the distance between the tool.
[0041] 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 claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A knob limit adjustment mechanism, comprising a limiter, an adjustment shaft and a bearing, wherein the limiter is arranged on a machine body, the adjustment shaft is arranged inside the machine body and one end of the adjustment shaft is inserted through the limiter, and the bearing is arranged between the limiter and the adjustment shaft, characterized in that: It also includes a knob body, which is detachably arranged on the adjustment shaft and can rotate relative to the limit member. The knob body includes a knob and an adjustable member, and the knob and the adjustable member are fixed by screws. The knob is provided with several assembly holes, including a first assembly hole and a second assembly position hole. The adjustable member is provided with several arc-shaped notches, including a first arc-shaped notch and a second arc-shaped notch. The first assembly hole is located in the first arc-shaped notch. The screw is assembled in the first assembly hole and the first arc-shaped notch, and the second assembly position hole is located in the second arc-shaped notch.
2. The knob limit adjustment mechanism according to claim 1, characterized in that: An indicator is arranged on the outer wall of the adjustable part, and the indicator is used in conjunction with the scale area on the machine body.
3. The knob limit adjustment mechanism according to claim 1 or 2, characterized in that: The limiting member is provided with a plurality of tooth-shaped protrusions which are distributed along the circumference and at equal intervals.
4. The knob limit adjustment mechanism according to claim 3, characterized in that: The adjustable part is provided with a limiting convex column, and the limiting part is provided with two limiting blocks, which are arranged on both sides of the limiting part and are used in conjunction with the limiting convex column.
5. The knob limit adjustment mechanism according to claim 1, characterized in that: The knob is provided with an octagonal star hole and a connecting hole, and the octagonal star hole and the connecting hole are interconnected.
6. The knob limit adjustment mechanism according to claim 5, characterized in that: A clamping head is arranged at one end of the adjusting shaft, the cross section of the clamping head is a square, and the clamping head is used in conjunction with the eight-pointed star hole.
7. The knob limit adjustment mechanism according to claim 2, characterized in that: The arc angle of the first arc-shaped notch is 120°.
8. The knob limit adjustment mechanism according to claim 6, characterized in that: The adjusting shaft is provided with a nut at one end of the chuck.