A button knob and coffee grinder with a gear sense

Abstract

The present invention discloses a button knob with a gear sense and a coffee bean grinder equipped with the button knob. The button and the knob are integrated into one, making the overall design of the coffee bean grinder more compact. The button knob can provide the user with a gear sense, thereby improving the user experience of the product.

Description

Technical Field

[0001] The invention relates to a key knob, and in particular to a key knob with a gear position sense. Background Art

[0002] During the coffee making process, a grinder is used to grind coffee beans into powder, which is then extracted to create the coffee. Grinders are typically equipped with a start / stop button and a timer knob. The start / stop button controls the grinder's start and stop, while the timer knob sets the grinder's operating time. As market demands for industrial design in home appliances increase, users are demanding smaller product sizes and higher levels of integration to minimize the number of switches and buttons. They also desire a better user experience when manipulating knobs and buttons. Summary of the Invention

[0003] To solve the above problems, the present invention first provides a key knob with a gear position sense, comprising a knob and a key arranged at the center of the knob, a return spring, and an elastic ring piece; the inner bottom surface of the knob is provided with a plurality of fixing slots located on the same circumference, and a plurality of claws located on the same circumference extend from the inner circumference formed by the fixing slots, and a flange portion is provided inside the circumference of the claws; a key rod extends from the key, and a plurality of fins are provided on the rod body of the key rod, and a limiting groove is provided on the fin; a first side surface of the elastic ring piece is provided with a plurality of first columnar protrusions that can cooperate with the fixing slots, and a second side surface is provided with a plurality of second columnar protrusions; the elastic ring piece also includes a platform portion provided on the machine housing on which the key knob is installed, and an outer surface of the platform portion is provided with a plurality of gear slots located on the same circumference that can cooperate with the second columnar protrusions; When the button knob is mounted on the platform portion, the claw passes through the platform portion to fix the knob on the platform portion, and the button rod passes through the platform portion and rests on the touch switch on the circuit board arranged in the shell, and the flange portion of the knob is restricted in the limit groove on the fin of the button, and the return spring for the button is sleeved outside the button rod, and the elastic ring piece is clamped between the inner bottom surface of the button and the platform portion. At the same time, the first columnar protrusion of the elastic ring piece is inserted into the fixed slot hole of the timing knob, so that the knob can drive the elastic ring piece to move together, and the second columnar protrusion of the elastic ring piece is fitted in the gear slot hole of the platform portion, and when the elastic ring piece rotates with the knob, the elastic deformation of the elastic ring piece causes the second columnar protrusion to continuously slide out of the previous gear slot hole and slide into the next gear slot hole, thereby generating a gear sense and emitting a continuous clicking sound.

[0004] Furthermore, the fixing slots are arranged continuously to form a circle.

[0005] Furthermore, a stopper portion is provided outside the circumference of the claw, and a limiting portion is provided inside the circumference of the gear slot; through the cooperation of the stopper portion and the limiting portion, the rotation angle of the knob can be limited.

[0006] Furthermore, the elastic ring piece is made of plastic and includes two opposite arc segments, in which the first permanent magnet piece and the second permanent magnet piece are respectively wrapped, and the first permanent magnet piece and the second permanent magnet piece have opposite polarities facing the same side.

[0007] Furthermore, a Hall effect sensor is provided on the inner side of the platform portion. When the knob is turned, the first permanent magnet piece and the second permanent magnet piece can be respectively moved closer to or away from the Hall effect sensor.

[0008] The present invention also provides a bean grinder, comprising a shell and a button knob with a gear sense, wherein the button knob with a gear sense comprises a knob for setting the grinding time and a button arranged at the center of the knob for controlling the start and stop of the bean grinder, as well as a reset spring and an elastic ring piece; a plurality of fixing slots located on the same circumference are provided on the inner bottom surface of the knob, and a plurality of claws located on the same circumference are extended from the inside of the circumference formed by the fixing slots, and a flange portion is provided inside the circumference of the claws; a button rod extends from the button, a plurality of fins are provided on the rod body of the button rod, and a limiting groove is provided on the fin; a first side surface of the elastic ring piece is provided with a plurality of first columnar protrusions that can cooperate with the fixing slots, and a plurality of second columnar protrusions are provided on the second side surface; it also includes a platform portion provided on the shell, and a plurality of second columnar protrusions are provided on the outer side surface of the platform portion. The cam is engaged with the button and the spring which is engaged with the button is engaged with the button and the spring which is engaged with the button is engaged with the button.

[0009] Furthermore, the fixing slots are arranged continuously to form a circle.

[0010] Furthermore, a stopper portion is provided outside the circumference of the claw, and a limiting portion is provided inside the circumference of the gear slot; through the cooperation of the stopper portion and the limiting portion, the rotation angle of the knob can be limited.

[0011] Furthermore, the elastic ring piece is made of plastic and includes two opposite arc segments, in which the first permanent magnet piece and the second permanent magnet piece are respectively wrapped, and the first permanent magnet piece and the second permanent magnet piece have opposite polarities facing the same side.

[0012] Furthermore, a Hall effect sensor is provided on the inner side of the platform portion. When the knob is turned, the first permanent magnet piece and the second permanent magnet piece can be respectively moved closer to or away from the Hall effect sensor.

[0013] The button knob with gear position sense provided by the present invention integrates the button and the knob into one, making the overall design of the coffee grinder more compact. The button knob can provide the user with a gear position sense, thereby improving the user experience of the product.

[0014] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a perspective view of a coffee bean grinder in a preferred embodiment of the present invention;

[0016] Figure 2 yes Figure 1 Disassembly diagram of the medium grinder's button knob with gear feel;

[0017] Figure 3 yes Figure 1 Another disassembly view of the middle gear knob with a gear position feel;

[0018] Figure 4 yes Figure 1 A partial cross-sectional view of the medium grinder's button knob with a gear-sensing feel. DETAILED DESCRIPTION

[0019] The following describes several preferred embodiments of the present invention with reference to the accompanying drawings to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the scope of protection of the present invention is not limited to the embodiments mentioned herein.

[0020] like Figure 1 As shown, the coffee grinder 1 according to the present invention includes a housing 2. The housing 2 is provided with a key knob with a gear sensor and a powder adjustment button 3 according to the present invention. The key knob with a gear sensor includes a timing knob 5 and a key 4 located at the center of the timing knob 5. Pressing key 4 starts the coffee grinder 1; rotating the timing knob 5 sets the operating time of the coffee grinder 1. Rotating the powder adjustment button 3 controls the particle size of the coffee powder.

[0021] like Figure 2 As shown, the key knob with gear position sense also includes a return spring 6 and an elastic ring 7.

[0022] like Figure 3As shown, the inner bottom surface of the timing knob 5 is provided with a plurality of fixing slots 51 located on the same circumference. In this embodiment, the fixing slots 51 are arranged continuously to form a circle. A plurality of claws 54 also extend from the inner bottom surface of the timing knob 5 within the circumference formed by the fixing slots 51. The claws 54 are also located on the same circumference and are provided with a flange portion 54 within the circumference. A stop portion 53 is provided outside the circumference of the claws 54. In this embodiment, there are four claws 5. A key rod 41 extends from the button 4. The button rod 41 is provided with a plurality of fins 42. The fins 42 are provided with limiting grooves 43. In this embodiment, there are four fins 42. The first side surface of the elastic ring 7 is provided with a plurality of first columnar protrusions 72 that mate with the fixing slots 51, and the second side surface is provided with a plurality of second columnar protrusions 71. In this embodiment, there are three first columnar protrusions 72 and three second columnar protrusions 71. The elastic ring 7 includes two opposing arc segments, each enclosing a first permanent magnet 73 and a second permanent magnet 74. The north and south poles of the first and second permanent magnets 73 and 74 are arranged in opposite directions. In this embodiment, the elastic ring 7 is made of plastic, and the first and second permanent magnets 73 and 74 are arc-shaped. During injection molding of the elastic ring 7, they are encased within the plastic of the elastic ring 7. A platform 8 is provided on the housing 2 of the grinder 1. A first side surface of the platform 8 is provided with a plurality of shift slots 81 arranged along the same circumference, which engage with the second cylindrical protrusions 71. In this embodiment, the shift slots 81 are arranged continuously to form a circle. An arc-shaped limiter 82 is also provided within the circumference of the shift slots 81. The stopper 53 cooperates with the limiter 82 to limit the rotation angle of the timing knob 5.

[0023] like Figure 4As shown, when the gear-sensing push-button knob is installed on the coffee grinder 1, the claw 54 of the timing knob 2 passes through the platform 8, securing the timing knob 2 to the platform 8. The stem 4 of the button 4 passes through the platform 8 and rests against the tactile switch 11 on the circuit board 10 within the housing 2. The flange 54 of the timing knob 2 is restrained within the retaining groove 43 on the fin 42 of the button 4. In other words, the button 4 is mounted on the flange 54 of the timing knob 2 via the retaining groove 43. A spring 6 is sleeved around the stem 4 of the button 4 to reset the button 4. The elastic ring 7 is sandwiched between the inner bottom surface of the timing button 5 and the first side surface of the platform 8. The first cylindrical protrusion 72 of the elastic ring 7 fits within the fixing slot 51 of the timing knob 5. Because the fixing slot 51 is relatively deep, the two are relatively fixed, meaning that the timing knob 5 can move with the elastic ring 7. The second cylindrical protrusion 71 of the elastic ring piece 7 fits into the gear slot 81 of the platform portion 8. The gear slot 81 is set relatively shallowly, and the elastic ring piece 7 has a certain elasticity. When the elastic ring piece 7 rotates, the elastic ring piece 7 elastically deforms, causing the second cylindrical protrusion 71 to slide out of the previous gear slot 81 and slide into the next gear slot 81. That is, the two can move relative to each other, and at the same time provide people with a sense of gear position and emit a continuous clicking sound. A Hall sensor 9 is also provided on the second side surface of the platform portion 8.

[0024] When button 4 is pressed, its stem 41 depresses the touch switch 11, thereby starting or stopping the grinder 1. The knob reset spring 6 automatically resets the pressed button 4. Rotating the timing button 5, located outside the button 4, causes the elastic ring 7 to rotate along with it. As the first and second permanent magnets 73, 74, with oppositely positioned north and south poles on the elastic ring 7, approach and move away from the Hall sensor 8, current signals of varying directions and magnitudes are generated in the Hall sensor 8, used to set different operating times for the grinder 1. The relative motion between the elastic ring 7 and the platform 8 provides a sense of gear position and sound.

[0025] The preferred embodiments of the present invention have been described in detail above. It should be understood that numerous modifications and variations based on the concepts of the present invention are possible without inventive effort by those skilled in the art. Therefore, any technical solution that can be derived by one skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A button knob with a gear sense, characterized in that: The invention comprises a knob and a button arranged at the center of the knob, a return spring and an elastic ring piece; the inner bottom surface of the knob is provided with a plurality of fixing slots located on the same circumference, and a plurality of claws located on the same circumference are extended from the inside of the circumference formed by the fixing slots, and a flange portion is provided inside the circumference of the claws; a key rod is extended from the button, and a plurality of fins are provided on the rod body of the key rod, and a limiting groove is provided on the fin; a first side surface of the elastic ring piece is provided with a plurality of first columnar protrusions that can cooperate with the fixing slots, and a second side surface is provided with a plurality of second columnar protrusions; it also includes a platform portion provided on the machine housing where the button knob is installed, and a plurality of gear slots located on the same circumference that can cooperate with the second columnar protrusions are provided on the outer surface of the platform portion; when the button knob is installed on the platform portion, The claw passes through the platform portion to fix the knob on the platform portion, and the button rod passes through the platform portion and rests on the touch switch on the circuit board arranged in the shell. The flange portion of the knob is restricted in the limit groove on the fin of the button, and the reset spring for the button is sleeved outside the button rod, and the elastic ring piece is clamped between the inner bottom surface of the button and the platform portion. At the same time, the first columnar protrusion of the elastic ring piece is inserted into the fixed slot hole of the timing knob, so that the knob can drive the elastic ring piece to move together, and the second columnar protrusion of the elastic ring piece is fitted in the gear slot hole of the platform portion, and when the elastic ring piece rotates with the knob, the elastic deformation of the elastic ring piece causes the second columnar protrusion to continuously slide out of the previous gear slot hole and slide into the next gear slot hole, thereby generating a gear sense and emitting a continuous clicking sound.

2. The button knob with gear position sense according to claim 1, wherein: The fixing slots are arranged continuously to form a circle.

3. The button knob with gear position sense according to claim 1, wherein: A stopper portion is provided outside the circumference of the claw, and a limiting portion is further provided inside the circumference of the gear slot; the rotation angle of the knob can be limited by the cooperation of the stopper portion and the limiting portion.

4. The button knob with gear position sense according to claim 1, wherein: The elastic ring piece is made of plastic and includes two opposite arc segments, in which the first permanent magnet piece and the second permanent magnet piece are respectively wrapped. The first permanent magnet piece and the second permanent magnet piece have opposite polarities when facing the same side.

5. The button knob with gear position sense according to claim 4, wherein: A Hall effect sensor is also provided on the inner side of the platform portion. When the knob is turned, the first permanent magnet piece and the second permanent magnet piece can be respectively moved closer to or away from the Hall effect sensor.

6. A coffee bean grinder, characterized in that: The invention comprises a shell and a button knob with a gear sense, wherein the button knob with a gear sense comprises a knob for setting the grinding time and a button arranged at the center of the knob for controlling the start and stop of the grinder, as well as a reset spring and an elastic ring piece; a plurality of fixing slots located on the same circumference are provided on the inner bottom surface of the knob, and a plurality of claws located on the same circumference are extended from the inside of the circumference formed by the fixing slots, and a flange portion is provided inside the circumference of the claws; a button rod extends from the button, a plurality of fins are provided on the rod body of the button rod, and a limiting groove is provided on the fin; a first side surface of the elastic ring piece is provided with a plurality of first columnar protrusions that can cooperate with the fixing slots, and a plurality of second columnar protrusions are provided on the second side surface; it also includes a platform portion provided on the shell, and a plurality of gears located on the same circumference that can cooperate with the second columnar protrusions are provided on the outer surface of the platform portion. When the button knob is mounted on the platform portion, the claw passes through the platform portion to fix the knob on the platform portion, and the button rod passes through the platform portion and rests on the touch switch on the circuit board arranged in the shell, and the flange portion of the knob is restricted in the limiting groove on the fin of the button, and the return spring for the button is sleeved outside the button rod, and the elastic ring piece is clamped between the inner bottom surface of the button and the platform portion. At the same time, the first columnar protrusion of the elastic ring piece is inserted into the fixing slot hole of the timing knob, so that the knob can drive the elastic ring piece to move together, and the second columnar protrusion of the elastic ring piece is fitted in the gear slot hole of the platform portion, and when the elastic ring piece rotates with the knob, the elastic deformation of the elastic ring piece causes the second columnar protrusion to continuously slide out of the previous gear slot hole and slide into the next gear slot hole, thereby generating a gear sense and emitting a continuous clicking sound.

7. The coffee bean grinder according to claim 6, wherein: The fixing slots are arranged continuously to form a circle.

8. The coffee bean grinder according to claim 6, wherein: A stopper portion is provided outside the circumference of the claw, and a limiting portion is further provided inside the circumference of the gear slot; the rotation angle of the knob can be limited by the cooperation of the stopper portion and the limiting portion.

9. The coffee bean grinder according to claim 6, wherein: A Hall effect sensor is also provided on the inner side of the platform portion. When the knob is turned, the first permanent magnet piece and the second permanent magnet piece can be respectively moved closer to or away from the Hall effect sensor.

10. The coffee bean grinder according to claim 9, wherein: A Hall effect sensor is also provided on the inner side of the platform portion. When the knob is turned, the first permanent magnet piece and the second permanent magnet piece can be respectively moved closer to or away from the Hall effect sensor.

Images