A push-to-contract rotary adjustment knob module

Abstract

The application discloses a kind of pressable retractable rotary knob module of rotation adjustment, belong to knob field, including outer shell, pedestal and knob, knob is rotatably installed on pedestal, outer shell is sleeved in the circumferential direction of pedestal, reset spring is arranged between outer shell and pedestal, and the guide groove on the outer shell is sleeved with the limiting block on the pedestal;Elastic spring is installed on the outer shell, and track groove and guide island are formed on the pedestal.The reset spring is arranged between the outer shell and the pedestal, so that the pedestal and the outer shell can move axially relative to each other when the knob is pressed, so that the knob has a pressing function;The height of the part protruding from the outer shell before the knob is pressed is limited by the cooperation between the limiting block and the guide groove, and the position of the knob after being pressed and retracted in the outer shell is limited by the cooperation between the elastic spring, the track groove and the guide island, so that the knob is pressed and retracted into the outer shell or protrudes out of the outer shell.

Description

Technical Field

[0001] This invention relates to the field of knobs, and more specifically, to a knob module for press-to-shrink rotation adjustment. Background Technology

[0002] With the continuous development of society and the rapid updates and iterations of electronic products, various types of switches are needed in current electronic products, among which rotary switches are one of the most widely used. A rotary switch sends different signals to the circuit board by rotating the knob or pressing the knob's cover, enabling the circuit board to control functions such as start / stop, direction adjustment, position adjustment, and running speed.

[0003] However, the existing knobs have a complex structure and are exposed when not in use. Over time, their surface will be contaminated with dust and other impurities, affecting their rotation and other functions. They are also not easy to clean around the knobs.

[0004] For example, the invention patent with publication number WO2018188574A1 discloses a knob structure for an induction cooker, including a knob switch assembly. The knob switch assembly consists of a sleeve button, a rotary encoder, a display screen bracket, and a control component. The knob switch assembly is connected to a printed circuit board through a through hole. Guide ribs are provided around the through hole. A protective component is provided outside the display screen. The display screen and the knob switch assembly are an integrated structure. However, the knob structure is still exposed. After long-term use, its surface will be contaminated by dust and other impurities, and it is not convenient to clean the area around the knob.

[0005] For example, utility model patent CN215834461U discloses a circular base with a limiting ring on the outer cylinder of the base. Several guide posts protrude upward from the middle of the base, and the mounting ring is fitted onto the guide posts through the guide hole at its bottom. The bottom of the mounting ring is provided with a circuit board, the upper end of the circuit board is provided with a potentiometer, and the bottom of the circuit board is provided with a push-button switch. The knob structure is also exposed, which will cause its surface to be contaminated by dust and other impurities after long-term use, and it is also inconvenient to clean around the knob. Summary of the Invention

[0006] To overcome the problems of exposed knobs in existing technologies, which can lead to dust and other impurities on their surface after prolonged use and make cleaning around the knob inconvenient, this invention provides a knob module that can be pressed, retracted, and rotated for adjustment. The module includes a housing, a base, and a knob. The knob is rotatably mounted on the base. The housing is fitted around the outer circumference of the base. A return spring with its length parallel to the central axis of the knob is provided between the housing and the base. A limit block is provided on the base at one end away from the knob. A guide groove with the same length direction as the return spring is provided on the housing, and the limit block is fitted within the guide groove.

[0007] A spring clip is installed on the outer shell, and a track groove is formed on the base in the same direction as the length of the return spring. A guide island is provided in the track groove, and the spring clip is located above the track groove with its free end bent toward the bottom of the track groove to form a bent part.

[0008] A return spring is placed between the outer shell and the base, allowing axial relative movement between the base and the outer shell when the knob is pressed, thus enabling the knob to have a pressing function. The height of the part of the knob protruding from the outer shell before pressing is limited by the cooperation between the limiting block and the guide groove. The knob is then retracted into the outer shell after being pressed by the cooperation between the spring clip, the track groove and the guide island, thus limiting the knob to either retract into the outer shell or protrude out of the outer shell when pressed.

[0009] Preferably, a first cylindrical mounting groove is formed on the outer shell, and a second cylindrical mounting groove coaxial with the first cylindrical mounting groove is formed on the base at a position corresponding to the first cylindrical mounting groove. The central axes of the first cylindrical mounting groove and the second cylindrical mounting groove are parallel to the central axis of the knob, and the openings of the first cylindrical mounting groove and the second cylindrical mounting groove fit together.

[0010] The first cylindrical mounting groove opening is fitted inside the second cylindrical mounting groove opening, or the second cylindrical mounting groove opening is fitted inside the first cylindrical mounting groove opening;

[0011] The reset spring is located within the accommodating space formed by the first cylindrical mounting groove and the second cylindrical mounting groove, and both ends of the reset spring abut against the bottom of the first cylindrical mounting groove and the second cylindrical mounting groove, respectively.

[0012] Here, the return spring is housed in the space formed by the two cylindrical mounting slots. The two ends of the return spring press against the bottom of the two cylindrical mounting slots, thereby applying a separation force between the outer shell and the base.

[0013] Preferably, the limiting block has a limiting engagement portion formed on the side near the knob, and the guide groove has a guide slot formed on the end near the knob that cooperates with the limiting engagement portion.

[0014] Preferably, the guide island has a recessed retaining spring fixing part formed on the side near the knob.

[0015] Preferably, two track grooves are formed at the same position on opposite surfaces A and B of the base. The end of the spring retainer corresponding to the two track grooves away from the bent part is fixedly installed on the spring retainer main rod. The spring retainer main rod is rotatably installed on the base through a spring retainer rotating shaft. The axis of the spring retainer rotating shaft is the same as the length direction of the track groove.

[0016] Preferably, the guide island on the track groove on surface A includes a first guide block and a second guide block, and the first guide block and the second guide block have the retaining spring fixing part formed on the side of the intersection near the knob; a first guide track groove and a second guide track groove are formed on the track groove on surface A near the knob.

[0017] The first guide track groove includes a first guide inner wall extending from one side of the free end of the first guide block toward the middle of the track groove, and the distance between the first guide inner wall and the knob decreases linearly or non-linearly as the first guide inner wall extends from one side of the free end of the first guide block toward the middle.

[0018] The guide island on the track groove on side B includes a third guide block and a fourth guide block. The third guide block and the fourth guide block have a retaining spring fixing part formed on the side of the intersection near the knob. The track groove on side B has a third guide track groove and a fourth guide track groove formed on the end near the knob.

[0019] The third guide track groove includes a second guide inner wall extending from the free end of the third guide block toward the middle of the track groove, and the distance between the second guide inner wall and the knob decreases linearly or non-linearly as the second guide inner wall extends from one side of the free end of the third guide block toward the middle position.

[0020] Preferably, the third guide track groove and the fourth guide track groove on the base B surface are respectively located at the middle position of the snap ring fixing part, and a third guide inner wall is connected between the third guide track groove and the fourth guide track groove. The third guide inner wall is located at the middle position between the snap ring fixing part and the knob. When the third guide inner wall extends from the snap ring fixing part to the fourth guide track groove, the distance from the knob decreases linearly or non-linearly.

[0021] The first guide groove on the base A surface is located at the end near the knob, between the retaining spring fixing part and the knob.

[0022] Preferably, the second guide track groove and the fourth guide track groove are both on the same straight line. The second guide track groove is located on one side of the free end of the second guide block and extends away from the knob to the side of the second guide block away from the knob. The fourth guide track groove is located on one side of the free end of the fourth guide block and extends away from the knob to the side of the second guide block away from the knob. The distance between the fourth guide track groove and the middle of the track groove decreases linearly from the end near the knob to the other end.

[0023] By cooperating with two sets of spring clips, track grooves, and guide islands located on sides A and B, the knob is popped out when pressed and retracted when pressed again, thus turning off the rotation control function. This achieves the switching between the extended and retracted states. The simple structure realizes the press-to-extend function with fewer parts, reducing economic costs. Utilizing the rotatability of the knob rotor, the rotation adjustment information of the knob is transmitted to the internal circuit board components, allowing the internal circuit board components to recognize the information and achieve the purpose of rotation control.

[0024] Here, when the knob is in the protruding state, the spring clip is located in the main groove of the track groove. Pressing the knob causes the guide islands on the track grooves on surfaces A and B of the base to move toward the spring clip. When the bent part of the spring clip contacts the side wall of the guide island at the end of the base, it moves along the trajectory of the guide island side wall to the ends of the first and third guide track grooves. Here, the ends of the first and third guide track grooves are both located on the side of the guide islands on surfaces A and B of the base that are closer to the knob. Releasing the knob causes the guide islands on the track grooves of the base to move in the opposite direction, so that the retaining part of the spring clip on the guide island is locked onto the bent part of the spring clip, preventing the guide island from moving in the opposite direction. The knob then retracts into the outer shell and no longer protrudes. At this time, the knob cannot be operated.

[0025] When the knob is in the retracted state, pressing the knob causes the bent part of the spring clip on the B side of the base to move along the inner wall of the third guide to the end of the fourth guide track groove. At this time, the spring clip on the A side of the base also moves to the end of the second guide track groove. Releasing the knob causes the bent part of the spring clip to retract along the second guide track groove and the fourth guide track groove, through the sides of the second guide block and the fourth guide block, to the main groove of the track groove.

[0026] Preferably, it further includes a circuit board protective housing, a knob rotor, and a circuit board assembly. The knob is rotatably mounted on the periphery of one end of the circuit board protective housing. One end of the base is fixedly mounted on the circuit board protective housing at a position away from the knob end. The circuit board assembly and the knob rotor are sequentially installed inside the circuit board protective housing from the base to the knob.

[0027] The circuit board assembly is fixedly installed inside the circuit board protective housing. The circuit board protective housing has a circular opening at the center of one end near the knob. The knob rotor has a rotor fixing shaft extending from the center of the side near the circular opening toward the knob. A threaded hole is formed in the middle of the rotor fixing shaft. A threaded rod is formed on the knob at the position corresponding to the threaded hole.

[0028] Preferably, the knob rotor is sleeved on the side of the circuit board assembly near the circuit board assembly, and the circuit board assembly has a sleeve opening in the middle on the side of the base near the base, and the end of the base passes through the sleeve opening and is sleeved on the circuit board assembly.

[0029] When using the knob, rotating the knob causes the knob rotor to rotate as well. The internal circuit board assembly monitors the movement of the knob rotor and transmits corresponding signals, thereby controlling the knob by rotating it.

[0030] Since the base cannot rotate, the circuit board protective housing synchronous base cannot rotate, but the knob rotor can rotate coaxially. This allows the knob to rotate, generate a signal, and perform control. Pressing the knob will push the entire assembly back inside, and pressing it again will pop the control out, thus realizing press-to-pop rotation control, and pressing it again will compress it back, turning off the rotation control function.

[0031] Beneficial effects:

[0032] The beneficial effects of adopting the technical solution of this invention are as follows:

[0033] (1) A reset spring is placed between the outer shell and the base so that the base and the outer shell can move axially relative to each other when the knob is pressed, so that the knob has a pressing function; then the height of the part of the knob protruding from the outer shell before pressing is limited by the cooperation between the limiting block and the guide groove; and the position of the knob retracting into the outer shell after pressing is limited by the cooperation between the spring clip, the track groove and the guide island, so that the knob retracts into the outer shell or protrudes out of the outer shell after pressing, thus achieving the purpose of the knob retracting into the outer shell or protruding out of the outer shell.

[0034] (2) By cooperating with the two sets of spring clips, track grooves and guide islands located on the A and B sides, the purpose of the knob press-to-pop control and press-to-retract control is realized, and the rotation control function is turned off. The two states of extension and retraction are switched. The simple structure realizes the press-to-extend function, and the parts are few, which can reduce economic costs. By utilizing the rotatability of the knob rotor, the rotation adjustment information of the knob is transmitted to the inside, so that the internal circuit board components can recognize the information and achieve the purpose of rotation control. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 This is a three-dimensional structural diagram of the preferred knob module of the present invention;

[0037] Figure 2 This is an exploded perspective view of the preferred knob module of the present invention;

[0038] Figure 3 This is a diagram showing the preferred fit between the return spring, the base, and the outer shell of the present invention.

[0039] Figure 4 This is a preferred embodiment of the present invention, showing the internal structure of the knob module when the knob is in the protruding state.

[0040] Figure 5 This is a preferred embodiment of the present invention, showing the internal structure of the knob module when the knob is in the retracted state.

[0041] Figure 6 This is a diagram showing the positional relationship between the spring clip, the track groove, and the guide island when the knob of the present invention is in the protruding state.

[0042] Figure 7 This is a diagram showing the positional relationship between the spring clip, the track groove, and the guide island when the knob of the present invention is in the retracted state.

[0043] Figure 8 This is a diagram showing the preferred fit between the knob and the knob rotor of the present invention. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] like Figures 1 to 8 As shown, the pressable, retractable, and rotatable knob module includes a housing 1, a base 2, and a knob 3. The knob 3 is rotatably mounted on the base 2. The housing 1 is sleeved on the outer circumference of the base 2. A return spring 4 with its length direction parallel to the central axis of the knob 3 is provided between the housing 1 and the base 2. A limit block 21 is provided on the base 2 at one end away from the knob 3. A guide groove 11 with the same length direction as the return spring 4 is provided on the housing 1. The limit block 21 is sleeved in the guide groove 11.

[0046] A spring clip 12 is installed on the outer shell 1. A track groove 22 is formed on the base 2 in the same direction as the length of the return spring 4. A guide island 23 is provided in the track groove 22. The spring clip 12 is located above the track groove 22 and its free end is bent toward the bottom of the track groove 22 to form a bent part 121.

[0047] A return spring is placed between the outer shell and the base, allowing axial relative movement between the base and the outer shell when the knob is pressed, thus enabling the knob to have a pressing function. The height of the part of the knob protruding from the outer shell before pressing is limited by the cooperation between the limiting block and the guide groove. The knob is then retracted into the outer shell after being pressed by the cooperation between the spring clip, the track groove and the guide island, thus limiting the knob to either retract into the outer shell or protrude out of the outer shell when pressed.

[0048] A first cylindrical mounting groove 13 is formed on the outer shell 1, and a second cylindrical mounting groove 24 coaxial with the first cylindrical mounting groove 13 is formed on the base 2 at a position corresponding to the first cylindrical mounting groove 13. The central axes of the first cylindrical mounting groove 13 and the second cylindrical mounting groove 24 are parallel to the central axis of the knob 3, and the openings of the first cylindrical mounting groove 13 and the second cylindrical mounting groove 24 fit together.

[0049] The opening of the first cylindrical mounting groove 13 is fitted inside the opening of the second cylindrical mounting groove 24, or the opening of the second cylindrical mounting groove 24 is fitted inside the opening of the first cylindrical mounting groove 13;

[0050] The reset spring 4 is located within the accommodating space formed by the first cylindrical mounting groove 13 and the second cylindrical mounting groove 24, and the two ends of the reset spring 4 abut against the bottom of the first cylindrical mounting groove 13 and the second cylindrical mounting groove 24, respectively.

[0051] Here, the return spring is housed in the space formed by the two cylindrical mounting slots. The two ends of the return spring press against the bottom of the two cylindrical mounting slots, thereby applying a separation force between the outer shell and the base.

[0052] The limiting block 21 has a limiting engagement portion 211 formed on the side near the knob, and the guide groove 11 has a guide slot (not shown in the figure) formed on the end near the knob 3 that cooperates with the limiting engagement portion 211. The guide island 23 has a recessed retaining spring fixing portion 231 formed on the side near the knob 3.

[0053] Two track grooves 22 are formed at the same position on opposite surfaces A and B of the base 2. The end of the spring clip 12 corresponding to the two track grooves 22 away from the bent part 121 is fixedly installed on the spring clip main rod 122. The spring clip main rod 122 is rotatably installed on the base 2 through a spring clip rotation shaft (not shown in the figure). The axis of the spring clip rotation shaft is the same as the length direction of the track groove 22.

[0054] The guide island 23 located on the track groove 22 on surface A includes a first guide block 232 and a second guide block 233. The first guide block 232 and the second guide block 233 form the snap ring fixing part 231 at the intersection position near the knob 3. A first guide track groove 221 and a second guide track groove 222 are formed on the track groove 22 located on surface A near the knob 3.

[0055] The first guide track groove 221 includes a first guide inner wall 223 extending from one side of the free end of the first guide block 232 toward the middle position of the track groove 22, and the distance between the first guide inner wall 223 and the knob 3 decreases linearly or non-linearly as the first guide inner wall 223 extends from one side of the free end of the first guide block 232 toward the middle position.

[0056] The guide island 23 on the track groove 22 on side B includes a third guide block 234 and a fourth guide block 235. The third guide block 234 and the fourth guide block 235 form the retaining spring fixing part 231 near the knob 3 at the intersection position. The track groove 22 on side B has a third guide track groove 224 and a fourth guide track groove 225 near the knob 3.

[0057] The third guide track groove 224 includes a second guide inner wall 226 extending from the free end of the third guide block 234 toward the middle of the track groove 22, and the distance between the second guide inner wall 226 and the knob 3 decreases linearly or non-linearly as the second guide inner wall 226 extends from one side of the free end of the third guide block 234 toward the middle position.

[0058] The third guide groove 224 and the fourth guide groove 225 on surface B of the base 2 are respectively located in the middle of the snap ring fixing part 231. A third guide inner wall 227 is connected between the third guide groove 224 and the fourth guide groove 225. The third guide inner wall 227 is located in the middle of the snap ring fixing part 231 and the knob 3. When the third guide inner wall 227 extends from the snap ring fixing part 231 to the fourth guide groove 225, the distance from the knob 3 decreases linearly or non-linearly.

[0059] On surface A of base 2, the first guide track groove 221 is located near the end of the knob 3 at the midpoint between the snap ring fixing part 231 and the knob 3.

[0060] The second guide track groove 222 and the fourth guide track groove 225 are both on the same straight line. The second guide track groove 222 is located on one side of the free end of the second guide block 233 and extends away from the knob 3 to the side of the second guide block 233 away from the knob 3. The fourth guide track groove 225 is located on one side of the free end of the fourth guide block 235 and extends away from the knob 3 to the side of the second guide block 233 away from the knob 3. The distance between the fourth guide track groove 225 and the track groove 22 decreases linearly from one end near the knob 3 to the other end.

[0061] By cooperating with two sets of spring clips, track grooves, and guide islands located on sides A and B, the knob is popped out when pressed and retracted when pressed again, thus turning off the rotation control function. This achieves the switching between the extended and retracted states. The simple structure realizes the press-to-extend function with fewer parts, reducing economic costs. Utilizing the rotatability of the knob rotor, the rotation adjustment information of the knob is transmitted to the internal circuit board components, allowing the internal circuit board components to recognize the information and achieve the purpose of rotation control.

[0062] Here, when the knob is in the protruding state, the spring clip is located in the main groove 228 of the track groove. When the knob is pressed, the guide islands on the track grooves on the A and B surfaces of the base will move towards the spring clip. When the bent part of the spring clip contacts the side wall of the guide island at the end of the base, it will move along the trajectory of the guide island side wall to the end of the first guide track groove and the third guide track groove. Here, the ends of the first guide track groove and the third guide track groove are both located on the side of the guide island on the A and B surfaces of the base that are closer to the knob. When the knob is released, the guide islands on the track grooves of the base move in the opposite direction, so that the fixing part of the spring clip on the guide island is locked on the bent part of the spring clip, so that the guide island can no longer move in the opposite direction. The knob then retracts into the outer shell and no longer protrudes. At this time, the knob cannot be operated.

[0063] When the knob is in the retracted state, pressing the knob causes the bent part of the spring clip on the B side of the base to move along the inner wall of the third guide to the end of the fourth guide track groove. At this time, the spring clip on the A side of the base also moves to the end of the second guide track groove. Releasing the knob causes the bent part of the spring clip to retract along the second guide track groove and the fourth guide track groove, through the sides of the second guide block and the fourth guide block, to the main groove of the track groove.

[0064] In a preferred embodiment, the circuit board protective housing 5, the knob rotor 6, and the circuit board assembly 7 are also included. The knob 3 is rotatably mounted on the periphery of one end of the circuit board protective housing 5. One end of the base 2 is fixedly mounted on the circuit board protective housing 5 at a position away from the knob 3. The circuit board assembly 7 and the knob rotor 6 are sequentially mounted inside the circuit board protective housing 5 from the base 2 to the knob 3. Preferably, the base 2 has an external thread on its outer edge near the end of the circuit board protective housing 5, and the circuit board protective housing 5 has an internal thread at the position corresponding to the external thread. That is, the base 2 and the circuit board protective housing 5 are fixedly connected by threads.

[0065] The circuit board assembly 7 is fixedly installed inside the circuit board protective housing 5. The circuit board protective housing 5 has a circular opening at the center of one end near the knob 3. The knob rotor 6 has a rotor fixing shaft 61 extending from the center of the side near the circular opening toward the knob 3. A threaded hole 62 is formed in the middle of the rotor fixing shaft 61. A threaded rod 31 is formed on the knob 3 at the position corresponding to the threaded hole 62.

[0066] The knob rotor 6 is sleeved on the side of the circuit board assembly 7 near the circuit board assembly 7. The circuit board assembly 7 has a sleeve opening in the middle on the side of the base 2 near the base 2. The end of the base 2 passes through the sleeve opening and is sleeved on the circuit board assembly 7.

[0067] When using the knob, rotating the knob causes the knob rotor to rotate as well. The internal circuit board assembly monitors the movement of the knob rotor and transmits corresponding signals, thereby controlling the knob by rotating it.

[0068] Since the base cannot rotate, the circuit board protective housing synchronous base cannot rotate, but the knob rotor can rotate coaxially. This allows the knob to rotate, generate a signal, and perform control. Pressing the knob will push the entire assembly back inside, and pressing it again will pop the control out, thus realizing press-to-pop rotation control, and pressing it again will compress it back, turning off the rotation control function.

[0069] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A knob module for press-to-shrink rotation adjustment, characterized in that, The device includes an outer shell, a base, and a knob. The knob is rotatably mounted on the base. The outer shell is fitted around the outer circumference of the base. The knob has a protruding state and a retracted state relative to the outer shell. When the knob is in the protruding state, it protrudes from the outer shell. When the knob is in the retracted state, the knob retracts into the outer casing; A return spring with its length direction parallel to the central axis of the knob is provided between the outer shell and the base. A limit block is provided on the base at the end away from the knob. A guide groove with the same length direction as the return spring is provided on the outer shell. The limit block is sleeved in the guide groove. The cooperation between the limit block and the guide groove is used to limit the height of the part of the knob protruding from the outer shell when the knob is in the protruding state. A spring-loaded retaining ring is mounted on the outer casing. A track groove with the same length direction as the return spring is formed on the base. A guide island is provided in the track groove. The spring-loaded retaining ring is located above the track groove, and its free end is bent towards the bottom of the track groove to form a bent portion. The cooperation between the spring-loaded retaining ring, the track groove, and the guide island is used to limit the position of the knob when it is in the retracted state and retracted into the outer casing. A first cylindrical mounting groove is formed on the outer casing. A second cylindrical mounting groove, coaxial with the first cylindrical mounting groove, is formed on the base at a position corresponding to the first cylindrical mounting groove. The central axes of the first cylindrical mounting groove and the second cylindrical mounting groove are both parallel to the central axis of the knob, and the openings of the first cylindrical mounting groove and the second cylindrical mounting groove fit together. The first cylindrical mounting groove opening is fitted inside the second cylindrical mounting groove opening, or the second cylindrical mounting groove opening is fitted inside the first cylindrical mounting groove opening; The reset spring is located within the accommodating space formed by the first cylindrical mounting groove and the second cylindrical mounting groove, and both ends of the reset spring abut against the bottom of the first cylindrical mounting groove and the second cylindrical mounting groove, respectively.

2. The knob module for press-to-contract rotation adjustment according to claim 1, characterized in that, The limiting block has a limiting engagement portion on the side near the knob, and the guide groove has a guide opening that cooperates with the limiting engagement portion on the end near the knob.

3. The knob module for press-to-contract rotation adjustment according to claim 1, characterized in that, The guide island has a recessed retaining spring on the side near the knob.

4. The knob module for press-to-contract rotation adjustment according to claim 3, characterized in that, Two track grooves are formed at the same position on opposite surfaces A and B of the base. The end of the spring clip corresponding to the two track grooves away from the bend is fixedly installed on the spring clip main rod. The spring clip main rod is rotatably installed on the base through a spring clip rotation shaft. The axis of the spring clip rotation shaft is the same as the length direction of the track groove.

5. The knob module for press-to-contract rotation adjustment according to claim 4, characterized in that, The guide island located on the track groove on surface A includes a first guide block and a second guide block. The first guide block and the second guide block have a retaining spring fixing part formed on the side of the intersection near the knob. A first guide track groove and a second guide track groove are formed on the track groove on surface A near the knob. The first guide track groove includes a first guide inner wall extending from one side of the free end of the first guide block toward the middle of the track groove, and the distance between the first guide inner wall and the knob decreases linearly or non-linearly as the first guide inner wall extends from one side of the free end of the first guide block toward the middle. The guide island on the track groove on side B includes a third guide block and a fourth guide block. The third guide block and the fourth guide block have a retaining spring fixing part formed on the side of the intersection near the knob. The track groove on side B has a third guide track groove and a fourth guide track groove formed on the end near the knob. The third guide track groove includes a second guide inner wall extending from the free end of the third guide block toward the middle of the track groove, and the distance between the second guide inner wall and the knob decreases linearly or non-linearly as the second guide inner wall extends from one side of the free end of the third guide block toward the middle position.

6. The knob module for press-to-contract rotation adjustment according to claim 5, characterized in that, The third guide track groove and the fourth guide track groove on the base B surface are respectively located at the middle position of the snap ring fixing part. A third guide inner wall is connected between the third guide track groove and the fourth guide track groove. The third guide inner wall is located at the middle position between the snap ring fixing part and the knob. When the third guide inner wall extends from the position of the snap ring fixing part to the direction of the fourth guide track groove, the distance from the knob decreases linearly or non-linearly. The first guide groove on the base A surface is located at the end near the knob, between the retaining spring fixing part and the knob.

7. The knob module for press-to-contract rotation adjustment according to claim 6, characterized in that, The second guide track groove and the fourth guide track groove are both on the same straight line. The second guide track groove is located on one side of the free end of the second guide block and extends away from the knob to the side of the second guide block away from the knob. The fourth guide track groove is located on one side of the free end of the fourth guide block and extends away from the knob to the side of the fourth guide block away from the knob. The distance between the fourth guide track groove and the middle of the track groove decreases linearly from the end near the knob to the other end.

8. A knob module for press-to-contract rotation adjustment according to any one of claims 1-7, characterized in that, It also includes a circuit board protective housing, a knob rotor, and a circuit board assembly. The knob is rotatably mounted on the periphery of one end of the circuit board protective housing. One end of the base is fixedly mounted on the circuit board protective housing at a position away from the knob end. The circuit board assembly and the knob rotor are sequentially installed inside the circuit board protective housing from the base to the knob. The circuit board assembly is fixedly installed inside the circuit board protective housing. The circuit board protective housing has a circular opening at the center of one end near the knob. The knob rotor has a rotor fixing shaft extending from the center of the side near the circular opening toward the knob. A threaded hole is formed in the middle of the rotor fixing shaft. A threaded rod is formed on the knob at the position corresponding to the threaded hole.

9. A knob module for press-to-contract rotation adjustment according to claim 8, characterized in that, The knob rotor is sleeved on the side of the circuit board assembly near the circuit board assembly. The circuit board assembly has a sleeve opening in the middle on the side near the base. The end of the base passes through the sleeve opening and is sleeved on the circuit board assembly.

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