Roller coding assembly

Abstract

The utility model discloses a roller coding assembly, which comprises a base, a roller, a switching mechanism, an elastic driving lever and a button assembly, the roller is rotationally mounted on the base, and the coding module is triggered to output a signal through rotation of the roller; the switching mechanism is connected to the base and provided with a driving end and a movable end, the driving end and the movable end have a linkage relation, and the driving end can ascend and descend relative to the base so as to drive the movable end to stretch out and draw back relative to the side face of the roller; the elastic deflector rod is connected to the base and provided with a pressing wheel end and a connecting end, the pressing wheel end is arranged corresponding to the side face of the roller, and the connecting end is connected with the movable end; the button assembly is used for driving the driving end to ascend and descend relative to the base to drive the movable end to stretch relative to the side face of the roller to be in linkage with the connecting end, so that the distance between the pressing wheel end and the side face of the roller is changed, and the freedom degree of the roller is changed. By means of the arrangement, switching between the ratchet wheel rolling freedom degree and the free rolling freedom degree is achieved, ratchet wheel rolling is conducted through elastic lifting, the loosening problem caused by long-term rigid lifting is avoided, and the service life is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electronics, and specifically discloses a roller encoding component. Background Art

[0002] A mouse is an external input device for a computer and an indicator for the vertical and horizontal coordinates of a computer display system. It is used to simplify computer operations and replace cumbersome keyboard commands. A mouse wheel generally refers to the part between the left and right buttons on a mouse. A general mouse wheel can slide back and forth and is used when there is a scroll bar in the interface, such as for browsing web pages or documents.

[0003] The degrees of freedom of existing rollers are mostly fixed, and they cannot provide multiple levels of dialing feel, nor can they be dialed quickly, which is very inconvenient when fast scrolling or other scrolling requirements are required. Therefore, CN216596196U "An encoder component with switchable roller rotation freedom" has appeared, which can provide two operational degrees of freedom: ratchet rolling freedom and free rolling freedom. It is provided with a single-sided pressure wheel component, and the ratchet rolling is achieved by extending the rocker end of the pressure wheel component into the inner ring tooth structure of the roller and utilizing the rocking of the rocker end. Long-term rocking will cause the connection between the pressure wheel component and the bracket to loosen, resulting in failure to perform normal ratchet rolling. Utility Model Content

[0004] In order to solve at least one problem existing in the above-mentioned prior art, the utility model provides a roller encoding assembly, which is provided with an elastic lever which can be extended and retracted relative to the side of the roller, so that the switching of the ratchet rolling freedom and the free rolling freedom can be realized by changing the distance between the elastic lever and the side of the roller, and the elastic tilting of the elastic lever is utilized to roll the ratchet, thereby avoiding the looseness problem caused by long-term rigid tilting, greatly extending the service life, and reducing the noise when the ratchet rolls.

[0005] The technical solution adopted by the utility model to solve the problem is:

[0006] Roller encoder assembly, including:

[0007] Pedestal;

[0008] The roller is connected to the base and rotates to trigger the encoder module to output a signal;

[0009] The switching mechanism is mounted on the base, and has a driving end and a movable end. The driving end and the movable end are in a linkage relationship. The driving end can be raised and lowered relative to the base to drive the movable end to extend and retract relative to the side of the roller.

[0010] Elastic lever, the elastic lever is mounted on the base, the elastic lever has a pressing wheel end and a connecting end, the pressing wheel end is arranged corresponding to the side surface of the roller, and the connecting end is connected to the movable end;

[0011] Button assembly, the button assembly is used to drive the driving end to lift relative to the base, so as to drive the movable end to expand and contract relative to the side surface of the roller and drive the connecting end, thereby changing the distance between the pressing wheel end and the side surface of the roller, and further changing the freedom degree of the roller.

[0012] In some embodiments of the present invention, the pressing wheel end is arranged at the opposite end of the elastic lever, the connecting end is arranged at the opposite end of the elastic lever, a rotating hole is arranged on the elastic lever, and a mounting post is arranged on the base corresponding to the rotating hole. The elastic lever is rotationally mounted on the base through the clearance fit between the rotating hole and the mounting post.

[0013] In some embodiments of the present invention, a through hole is arranged at the connecting end, a plug is arranged on the movable end corresponding to the through hole, the plug is inserted into the through hole with a clearance, and a bend is formed at the end of the plug to connect the connecting end and the movable end.

[0014] In some more specific embodiments, the width of the through hole is greater than the thickness of the plug, so that the plug can lift relative to the through hole, so that the movable end can drive the connecting end to expand and contract.

[0015] In some embodiments of the present invention, teeth are arranged on the side surface of the roller along the circumferential direction, grooves are formed between the teeth, and a convex platform is arranged corresponding to the pressing wheel end. When the movable end extends relative to the side surface of the roller, the convex platform abuts against the side surface of the roller and contacts the teeth and the grooves, so that the roller performs ratchet rolling.

[0016] In some embodiments of the present invention, the switching mechanism includes: a lifting table and a telescopic frame. The base is provided with a lifting hole corresponding to the lifting table, and the width of the lifting hole is greater than the width of the lifting table; the lifting table can lift relative to the lifting hole to serve as the driving end; one opposite end of the telescopic frame is rotatably connected to the lifting table, and the opposite end is connected to the connecting end. The telescopic frame can rotate relative to the lifting table as the lifting table lifts, so as to expand and contract relative to the side surface of the roller to serve as the movable end.

[0017] In some more specific embodiments, the button assembly includes: a button, a claw sleeve, and a push rod. The claw sleeve is correspondingly mounted on the base with respect to the lifting table. The button is slidably mounted in the claw sleeve, and the top end of the button is exposed. The push rod is slidably connected in the claw sleeve, and the top end of the push rod is arranged towards the button. The bottom end of the push rod is rotatably connected to the lifting table. A first elastic member is arranged between the button and the push rod. A clamping tooth and a second elastic member abutting against the lifting table are arranged on the circumferential side of the push rod. The claw sleeve is correspondingly provided with a first card slot and a second card slot for the clamping tooth. The first card slot and the second card slot are different in slot length. When the button drives the push rod through the first elastic member, the clamping tooth switches between the first card slot and the second card slot under the action of the second elastic member to drive the lifting table to lift relative to the lifting hole.

[0018] In some further examples, a chute is arranged on the inner wall of the claw sleeve, and a slider is correspondingly arranged on the circumferential side of the button. The button is slidably mounted in the claw sleeve by sliding the slider in the chute.

[0019] In some further examples, a driving tooth is arranged at the bottom end of the button, and a stress tooth is correspondingly arranged at the top end of the push rod. When the button drives the push rod through the first elastic member, the driving tooth abuts against the stress tooth to make the push rod rotate, thereby driving the clamping tooth to switch between the first card slot and the second card slot.

[0020] In some embodiments of the present utility model, a fixing portion is arranged on the elastic lever, and a slot is correspondingly arranged on the base for the fixing portion. The elastic lever is fixedly mounted on the base by inserting the fixing portion into the slot.

[0021] In some embodiments of the present utility model, a circumferentially arranged clamping tooth is arranged on the side surface of the roller, and a groove is formed between the clamping teeth. A convex platform is correspondingly arranged at the pressing wheel end. When the movable end contracts relative to the side surface of the roller, the convex platform abuts against the side surface of the roller and contacts the clamping tooth and the groove to make the roller perform ratchet rolling.

[0022] In some embodiments of the present utility model, the switching mechanism includes: a push rod and a rotating block. The push rod can lift relative to the base to serve as a driving end. The rotating block is rotatably connected to the base. The rotating block abuts against the push rod under the action of a spring. The rotating block can expand and contract relative to the side surface of the roller as the push rod lifts to serve as a movable end.

[0023] In some more specific embodiments, the button assembly includes: a button and a claw sleeve. The claw sleeve is correspondingly mounted on the base for the push rod, the button is slidably mounted in the claw sleeve, and the top end of the button is exposed. The push rod is slidably connected in the claw sleeve, and the top end of the push rod is arranged towards the button. A conical surface connected to the rotating block is arranged at the bottom end of the push rod, and a first elastic member is arranged between the button and the push rod; a clamping tooth and a second elastic member abutting against the rotating block are arranged on the circumferential side of the push rod. The claw sleeve is correspondingly provided with a first card slot and a second card slot for the clamping tooth. The first card slot and the second card slot are different in slot length; when the button drives the push rod through the first elastic member, the clamping tooth switches between the first card slot and the second card slot under the action of the second elastic member to change the position of the push rod, so as to change the width of the part where the conical surface is connected to the rotating block, and further drive the rotating block to rotate.

[0024] In some embodiments of the present invention, two elastic toggle levers are provided and are symmetrically arranged with respect to the roller.

[0025] To sum up, compared with the prior art, the roller coding assembly provided by the present invention has the following technical effects:

[0026] By providing a switching mechanism, elastic toggle levers, and a button assembly, the switching mechanism has a driving end and a movable end, and there is a linkage relationship between the driving end and the movable end. The elastic toggle levers are mounted on the base. The elastic toggle levers have a pressing wheel end and a connecting end. The pressing wheel end is arranged corresponding to the side surface of the roller, and the connecting end is connected to the movable end. The button assembly can drive the driving end to lift relative to the base to drive the movable end to stretch relative to the side surface of the roller and link the connecting end, so as to change the distance between the pressing wheel end and the side surface of the roller, and further change the freedom degree of the roller, realizing the switching between the ratchet rolling freedom degree and the free rolling freedom degree, and using the elastic rocking of the elastic toggle levers for ratchet rolling, avoiding the loosening problem caused by long-term rigid rocking, greatly prolonging the service life, and also being able to reduce the noise during ratchet rolling. Description of the Drawings

[0027] Figure 1 It is a schematic diagram of an embodiment of the roller coding assembly of the present invention;

[0028] Figure 2 It is an internal view of the first embodiment of the roller coding assembly of the present invention;

[0029] Figure 3 It is an exploded view of the first embodiment of the roller coding assembly of the present invention;

[0030] Figure 4 It is an internal view of the second embodiment of the roller coding assembly of the present invention;

[0031] Figure 5 It is an exploded view of the second embodiment of the roller coding assembly of the present invention.

[0032] Among them, the meanings of the reference numerals are as follows:

[0033] 1. Base; 11. Seat body; 110. Accommodating cavity; 111. Wheel groove; 112. Rotating groove; 113. Snap; 12. Bottom cover; 120. Lifting hole; 121. Clamping position; 122. Mounting hole; 2. Roller; 21. Card teeth; 31. Elastic lever; 311. Boss; 312a. Perforation; 312b. Fixed part; 313. Rotating hole; 32a. Lifting platform; 32b. Rotating block; 321a. Protective cover; 321b. Rotating column; 322. Mounting hole; 33a. Telescopic frame; 33b. Spring; 331. Insert buckle; 34. Connecting piece; 41. Button; 411. Driving teeth; 412. Slide block; 42. Claw sleeve; 421. First card slot; 422. Second card slot; 423. Slide groove; 424. Buckle groove; 43. Push rod; 431. Stress teeth; 432. Clamping teeth; 433a. Buckle teeth; 433b. Tapered surface. Specific embodiments

[0034] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present invention. Therefore, the "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0036] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this utility model pertains. The terms used in the description of this utility model herein are for the purpose of describing specific embodiments only and are not intended to limit this utility model.

[0038] First Embodiment

[0039] According to Figure 1 、 2 As shown in FIGS. 3, etc., the present utility model provides a roller coding assembly, including: a base 1, a roller 2, a switching mechanism, an elastic lever 31, and a button assembly.

[0040] Specifically, the roller 2 is rotatably connected to the base 1, and the rotation of the roller 2 triggers the encoding module to output a signal; the switching mechanism is connected to the base 1, the switching mechanism has a driving end and a movable end, the driving end and the movable end have a linkage relationship, the driving end can move up and down relative to the base 1 to drive the movable end to expand and contract relative to the side surface of the roller 2; the elastic lever 31 is connected to the base 1, the elastic lever 31 has a pressing wheel end and a connecting end, the pressing wheel end is arranged corresponding to the side surface of the roller 2, the connecting end is connected to the movable end, and the elastic lever 31 can be set as a metal spring piece; the button 41 assembly is used to drive the driving end to move up and down relative to the base 1 to drive the movable end to expand and contract relative to the side surface of the roller 2 and then link the connecting end, so as to change the distance between the pressing wheel end and the side surface of the roller 2, and further change the freedom degree of the roller 2.

[0041] Through the above settings, the switching between the ratchet rolling freedom degree and the free rolling freedom degree is realized. Since the elastic lever 31 can undergo elastic deformation, when the pressing wheel end is stressed and undergoes elastic deformation, the connecting end can remain unchanged and in its original position without being affected. Therefore, the elastic lever 31 can be used for ratchet rolling, avoiding the loosening problem caused by long-term rigid levering, greatly extending the service life, and also reducing the noise during ratchet rolling.

[0042] Specifically, the pressing wheel end is arranged at the opposite end of the elastic lever 31, the connecting end is arranged at the opposite end of the elastic lever 31, a rotating hole 313 is arranged on the elastic lever 31, and the base 1 is provided with a mounting post corresponding to the rotating hole 313. The elastic lever 31 is rotationally mounted on the base 1 through the clearance fit between the rotating hole 313 and the mounting post; more specifically, the connecting end is provided with a through hole 312a, the movable end is provided with a plug 331 corresponding to the through hole 312a, the plug 331 is inserted into the through hole 312a with a clearance, and a bend is formed at the end of the plug 331 to connect the connecting end and the movable end; further, the width of the through hole 312a is greater than the thickness of the plug 331, so that the plug 331 can move up and down relative to the through hole 312a, thereby enabling the movable end to drive the connecting end to expand and contract; furthermore, a circumferentially arranged tooth 21 is arranged on the side surface of the roller 2, grooves are formed between the teeth 21, and a boss 311 is correspondingly arranged at the pressing wheel end. When the movable end extends relative to the side surface of the roller 2, the boss 311 abuts against the side surface of the roller 2 and contacts the tooth 21 and the groove, so that the roller 2 performs ratchet rolling.

[0043] Preferably, the switching mechanism includes: a lifting table 32a and a telescopic frame 33a. The base 1 is provided with a lifting hole 120 corresponding to the lifting table 32a, and the width of the lifting hole 120 is greater than the width of the lifting table 32a; the lifting table 32a can lift relative to the lifting hole 120 to serve as the driving end; one opposite end of the telescopic frame 33a is rotatably connected to the lifting table 32a, and the other opposite end is connected to the connecting end. The telescopic frame 33a can rotate relative to the lifting table 32a as the lifting table 32a lifts, so as to expand and contract relative to the side surface of the roller 2 to serve as the movable end; the lifting table 32a is provided with a transfer hole corresponding to one opposite end of the telescopic frame 33a, and one opposite end of the telescopic frame 33a is provided with a through hole corresponding to the transfer hole. By connecting a connecting member 34 through the transfer hole and the through hole, one opposite end of the telescopic frame 33a is rotatably connected to the lifting table 32a.

[0044] More preferably, the button 41 assembly includes: a button 41, a claw sleeve 42, and a push rod 43. The claw sleeve 42 is mounted on the base 1 corresponding to the lifting table 32a. The button 41 is slidably mounted in the claw sleeve 42 with its top end exposed. The push rod 43 is slidably connected in the claw sleeve 42, and the top end of the push rod 43 faces the button 41. The bottom end of the push rod 43 is rotatably connected to the lifting table 32a. A first elastic member (not shown) is provided between the button 41 and the push rod 43. A clamping tooth 432 and a second elastic member (not shown) abutted against the lifting table 32a are provided on the circumferential side of the push rod 43. The claw sleeve 42 is provided with a first card slot 421 and a second card slot 422 corresponding to the clamping tooth 432. The first card slot 421 and the second card slot 422 are different in slot length. In this embodiment, the slot length of the first card slot 421 is greater than that of the second card slot 422, so that when the clamping tooth 432 is engaged with the first card slot 421, the push rod 43 drives the lifting table 32a to rise relative to the lifting hole 120, and when the clamping tooth 432 is engaged with the second card slot 422, the push rod 43 drives the lifting table 32a to descend relative to the lifting hole 120. When the button 41 drives the push rod 43 through the first elastic member, the clamping tooth 432 switches between the first card slot 421 and the second card slot 422 under the action of the second elastic member to drive the lifting table 32a to lift relative to the lifting hole 120.

[0045] Wherein, the lifting table 32a is provided with a plugging hole. The bottom end of the push rod 43 passes through the plugging hole and forms a clearance fit between the push rod 43 and the plugging hole. A retaining tooth 433a is formed by the bottom end of the push rod 43 extending radially, so that the width of the bottom end of the push rod 43 is greater than the width of the plugging hole, thereby rotatably connecting the bottom end of the push rod 43 to the lifting table 32a. And, a mounting groove is formed on the outer circumferential side of the push rod 43, and the second elastic member is mounted in the mounting groove and abutted against the lifting table 32a. More preferably, a retaining groove 424 is provided on the outer circumferential side of the claw sleeve 42, and a snap 113 is provided on the base 1 corresponding to the retaining groove 424. The claw sleeve 42 is mounted on the base 1 corresponding to the lifting table 32a by snapping the retaining groove 424 onto the snap 113.

[0046] In order to enable the button 41 to be stably and slidably mounted within the claw sleeve 42, a chute 423 extending along its axial direction is provided on the inner wall of the claw sleeve 42. A slider 412 is provided on the circumferential side of the button 41 corresponding to the chute 423. The button 41 is slidably mounted within the claw sleeve 42 by slidingly engaging the slider 412 within the chute 423. In practice, the number of chutes 423 is greater than or equal to the number of sliders 412. In this embodiment, the number of chutes 423 is twice the number of sliders 412. Four sliders 412 are provided, and the number of chutes 423 is set to eight. Additionally, the chutes 423 are evenly arranged along the inner wall of the claw sleeve 42. In fact, a driving tooth 411 is provided at the bottom end of the button 41, and a stress tooth 431 is provided at the top end of the push rod 43 corresponding to the driving tooth 411. There is an angular deviation between the driving tooth 411 and the stress tooth 431. When the button 41 drives the push rod 43 through the first elastic member, causing the driving tooth 411 to abut against the stress tooth 431, the push rod 43 will rotate unidirectionally under the action of the angular deviation to drive the engaging tooth 432 to switch between the first card slot 421 and the second card slot 422.

[0047] In practical applications, the base 1 includes: a base body 11 and a bottom cover 12. An accommodation cavity 110 for accommodating the button 41 assembly, a wheel groove 111 for mounting the roller 2, and a rotating groove 112 for rotatably connecting the rotating shaft of the roller 2 are provided on the base body 11. In addition, the base 1 further includes: the bottom cover 12 is mounted on the bottom surface of the base body 11. The bottom cover 12 is provided with a mounting hole 122 corresponding to the mounting post. The elastic lever 31 is rotatably mounted on the base 1 by being in clearance fit with the mounting post through the rotating hole 313 and being inserted into the mounting hole 122. Furthermore, a lifting hole 120 is provided on the bottom cover 12. To stably connect the bottom cover 12 and the base body 11, the bottom cover 12 is provided with a clamping position 121 for connecting the base 1, and the base body 11 is provided with a clamping block corresponding to the clamping position 121. The bottom cover 12 is connected to the base body 11 by snapping the clamping position 121 onto the clamping block to form the base 1.

[0048] Most preferably, two elastic levers 31 are provided and are symmetrically arranged with respect to the roller 2. Thus, when the ratchet wheel rolls, relative pressures are applied to both side surfaces of the roller 2, enabling the roller 2 to remain between the two elastic levers 31 during rotation. This ensures that the rotating shaft of the roller 2 does not deviate, avoids the unsmooth rotation caused by the deviation, and further guarantees the smoothness of the rotation of the roller 2.

[0049] During actual use, the coding module is provided on the base 1 corresponding to the roller 2. The input end of the coding module is in photoelectric connection with the roller 2, and the output end of the coding module is in signal connection with the data end. The coding module outputs signals according to the rotation frequency of the roller 2. A protective cover 321a is provided on the bottom surface of the lifting platform 32a to counteract the impact when the lifting platform 32a moves up and down relative to the lifting hole 120, thereby ensuring the service life of the lifting platform 32a.

[0050] The rolling state and switching process of the above-mentioned roller coding component will be described as follows:

[0051] In the state of free rolling degree of freedom, the clamping teeth 432 are engaged with the first card slot 421, the lifting platform 32a is in the high position, the telescopic frame 33a is in the folded state and shrinks relative to the roller 2, and the corresponding connecting end also shrinks relative to the roller 2, and the pressing wheel end is arranged far away from the side surface of the roller 2; in the state of ratchet rolling degree of freedom, the clamping teeth 432 are engaged with the second card slot 422, the lifting platform 32a is in the low position, the two telescopic frames 33a are in the unfolded state and extend relative to the roller 2, and the corresponding connecting end also extends relative to the roller 2, and the pressing wheel end is abutted against the side surface of the roller 2.

[0052] When it is necessary to switch from the free rolling degree of freedom to the ratchet rolling degree of freedom, press the button 41 to compress the first elastic member, and push the push rod 43 to rotate unidirectionally, and compress the second elastic member, and then release the button 41. At this time, the button 41 is reset by using the elastic potential energy generated by the restoration of the first elastic member, and the push rod 43 is reset by using the elastic potential energy generated by the restoration of the second elastic member, so that the clamping teeth 432 are switched from the first card slot 421 to the second card slot 422, so that the lifting platform 32a descends to the low position, and then the telescopic frame 33a rotates, and the telescopic frame 33a is switched from the folded state to the unfolded state and extends relative to the roller 2, so as to drive the connecting end to extend relative to the roller 2, so that the elastic lever 31 rotates, and the linkage pressing wheel end moves towards the roller 2 and abuts against the side surface of the roller 2.

[0053] When it is necessary to switch from the free rolling degree of freedom to the ratchet rolling degree of freedom, press the button 41 to compress the first elastic member, and push the push rod 43 to rotate unidirectionally, and compress the second elastic member, and then release the button 41. At this time, the button 41 is reset by using the elastic potential energy generated by the restoration of the first elastic member, and the push rod 43 is reset by using the elastic potential energy generated by the restoration of the second elastic member, so that the clamping teeth 432 are switched from the second card slot 422 to the first card slot 421, so that the lifting platform 32a rises to the high position, and then the telescopic frame 33a rotates, and the telescopic frame 33a is switched from the unfolded state to the folded state and shrinks relative to the roller 2, so as to drive the connecting end to shrink relative to the roller 2, so that the elastic lever 31 rotates, and drives the pressing wheel end to move away from the roller 2 and away from the side surface of the roller 2.

[0054] Second Embodiment

[0055] According to Figure 1 、 4 、5 shown, based on the same concept, the present invention also provides another roller coding component. Only the parts different from the first embodiment in this embodiment will be described below.

[0056] Specifically, a fixing portion 312b is provided on the elastic lever 31, and the base 1 is provided with a slot corresponding to the fixing portion 312b. The elastic lever 31 is fixedly mounted on the base 1 by inserting the fixing portion 312b into the slot; further, a circumferentially arranged tooth 21 is provided on the side surface of the roller 2, and a groove is formed between the teeth 21. A boss 311 is correspondingly provided at the pressing wheel end. When the movable end contracts relative to the side surface of the roller 2, the boss 311 abuts against the side surface of the roller 2 and contacts the tooth 21 and the groove, so that the roller 2 performs ratchet rolling.

[0057] Preferably, the switching mechanism includes: a push rod 43 and a rotating block 32b; the push rod 43 can move up and down relative to the base 1 to serve as a driving end; the rotating block 32b is rotatably connected to the base 1, and the rotating block 32b abuts against the push rod 43 under the action of a spring 33b. The rotating block 32b can expand and contract relative to the side surface of the roller 2 as the push rod 43 moves up and down to serve as a movable end.

[0058] More preferably, the button 41 assembly includes: a button 41 and a claw sleeve 42. The claw sleeve 42 is mounted on the base 1 corresponding to the push rod 43. The button 41 is slidably mounted in the claw sleeve 42, and the top end of the button 41 is exposed. The push rod 43 is slidably connected in the claw sleeve 42, and the top end of the push rod 43 faces the button 41. A tapered surface 433b connected to the rotating block 32b is provided at the bottom end of the push rod 43. A first elastic member is provided between the button 41 and the push rod 43; a clamping tooth 432 and a second elastic member abutting against the rotating block 32b are provided on the circumferential side of the push rod 43. The claw sleeve 42 is provided with a first card slot 421 and a second card slot 422 corresponding to the clamping tooth 432. The first card slot 421 and the second card slot 422 are different in slot length; when the button 41 drives the push rod 43 through the first elastic member, the clamping tooth 432 switches between the first card slot 421 and the second card slot 422 under the action of the second elastic member to change the position of the push rod 43, so as to change the width of the part of the tapered surface 433b connected to the rotating block 32b, and further drive the rotating block 32b to rotate.

[0059] The following describes the rolling state and switching process of the above roller coding assembly:

[0060] In the state of free rolling freedom, the clamping tooth 432 is engaged with the first card slot 421, the push rod 43 is in a high position, the two rotating blocks 32b contract relative to the roller 2, and the corresponding connecting ends also contract relative to the roller 2. The pressing wheel end abuts against the side surface of the roller 2; in the state of ratchet rolling freedom, the clamping tooth 432 is engaged with the second card slot 422, the push rod 43 is in a low position, the two rotating blocks 32b expand relative to the roller 2, and the corresponding connecting ends also expand relative to the roller 2. The pressing wheel end is set away from the side surface of the roller 2.

[0061] When it is necessary to switch from the free rolling degree of freedom to the ratchet rolling degree of freedom, press the button 41 to compress the first elastic member, and push the push rod 43 to perform a one-way rotation, and compress the second elastic member. Then release the button 41. At this time, the button 41 is reset by using the elastic potential energy generated by the restoration of the first elastic member, and the push rod 43 is reset by using the elastic potential energy generated by the restoration of the second elastic member, so that the engaging tooth 432 is switched from the first card slot 421 to the second card slot 422, thereby causing the push rod 43 to descend to a low position, and further causing the rotating block 32b to rotate, making the rotating block 32b extend relative to the roller 2, so as to drive the connecting end to deform and extend relative to the roller 2, causing the elastic lever 31 to deform, driving the pressing wheel end to displace away from the roller 2 and away from the side surface of the roller 2.

[0062] When it is necessary to switch from the free rolling degree of freedom to the ratchet rolling degree of freedom, press the button 41 to compress the first elastic member, and push the push rod 43 to perform a one-way rotation, and compress the second elastic member. Then release the button 41. At this time, the button 41 is reset by using the elastic potential energy generated by the restoration of the first elastic member, and the push rod 43 is reset by using the elastic potential energy generated by the restoration of the second elastic member, so that the engaging tooth 432 is switched from the second card slot 422 to the first card slot 421, thereby causing the push rod 43 to rise to a high position, and further causing the rotating block 32b to rotate, making the rotating block 32b contract relative to the roller 2, so that the connecting end is restored and contracts relative to the roller 2, causing the elastic lever 31 to be restored, and linking the pressing wheel end to displace towards the roller 2 and abut against the side surface of the roller 2.

[0063] Third Embodiment

[0064] Based on the same concept, the present utility model further provides an electronic device, which applies the roller coding assembly as described in the above embodiments.

[0065] It should be noted that the various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0066] Although the optional embodiments of the embodiments of the present utility model have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted to include the optional embodiments as well as all changes and modifications falling within the scope of the embodiments of the present utility model.

[0067] Finally, it should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity from another, and do not necessarily require or imply any actual relationship or order between these entities. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that an article or terminal device comprising a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such an article or terminal device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the article or terminal device comprising the element.

[0068] The technical solutions provided by the present utility model have been introduced in detail above. Specific examples are used in this text to elaborate on the principles and implementation manners of the present utility model. At the same time, for those of ordinary skill in the art, based on the principles and implementation manners of the present utility model, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. Roller coding component, characterized in that Comprising: Base (1); Roller (2), the roller (2) is rotatably connected to the base (1), and the rotation of the roller (2) triggers the encoding module to output a signal; Switching mechanism, the switching mechanism is connected to the base (1), the switching mechanism has a driving end and a movable end, the driving end and the movable end have a linkage relationship, the driving end can move up and down relative to the base (1) to drive the movable end to expand and contract relative to the side surface of the roller (2); Elastic lever (31), the elastic lever (31) is connected to the base (1), the elastic lever (31) has a pressing wheel end and a connecting end, the pressing wheel end is arranged corresponding to the side surface of the roller (2), and the connecting end is connected to the movable end; Button (41) assembly, the button (41) assembly is used to drive the driving end to move up and down relative to the base (1), so as to drive the movable end to expand and contract relative to the side surface of the roller (2) and link the connecting end, thereby changing the distance between the pressing wheel end and the side surface of the roller (2), and further changing the degree of freedom of the roller (2).

2. The roller coding assembly according to claim 1, wherein The pressing wheel end is arranged at the opposite end of the elastic lever (31), the connecting end is arranged at the opposite end of the elastic lever (31), a rotating hole (313) is arranged on the elastic lever (31), and a mounting post is arranged on the base (1) corresponding to the rotating hole (313). The elastic lever (31) is rotatably connected to the base (1) through the rotating hole (313) and the mounting post with a clearance fit.

3. The roller coding component according to claim 1 or 2, characterized in that A through hole (312a) is arranged at the connecting end, and a plug (331) is arranged on the movable end corresponding to the through hole (312a). The plug (331) is inserted into the through hole (312a) with a clearance, and a bend is formed at the end of the plug (331) to connect the connecting end and the movable end.

4. The roller coding component according to claim 3, characterized in that, The width of the through hole (312a) is greater than the thickness of the plug (331), so that the plug (331) can move up and down relative to the through hole (312a), so that the movable end can link the connecting end to expand and contract.

5. The roller coding component according to claim 1 or 2, characterized in that Circumferentially arranged teeth (21) are arranged on the side surface of the roller (2), grooves are formed between the teeth (21), and a convex platform (311) is arranged corresponding to the pressing wheel end. When the movable end extends relative to the side surface of the roller (2), the convex platform (311) abuts against the side surface of the roller (2) and contacts the teeth (21) and the grooves, so that the roller (2) performs ratchet rolling.

6. The roller coding assembly according to claim 1 or 2, characterized in that, The switching mechanism includes: a lifting table (32a) and a telescopic frame (33a). The base (1) is provided with a lifting hole (120) corresponding to the lifting table (32a), and the width of the lifting hole (120) is greater than the width of the lifting table (32a). The lifting table (32a) can be lifted relative to the lifting hole (120) to serve as the driving end. One opposite end of the telescopic frame (33a) is rotatably connected to the lifting table (32a), and the other opposite end is connected to the connecting end. The telescopic frame (33a) can rotate relative to the lifting table (32a) as the lifting table (32a) is lifted, so as to telescopically move relative to the side surface of the roller (2) to serve as the movable end.

7. The roller coding component according to claim 6, characterized in that, The button (41) assembly includes: a button (41), a claw sleeve (42), and a push rod (43). The claw sleeve (42) is mounted on the base (1) corresponding to the lifting table (32a). The button (41) is slidably mounted in the claw sleeve (42) with the top end of the button (41) exposed. The push rod (43) is slidably connected in the claw sleeve (42), and the top end of the push rod (43) faces the button (41). The bottom end of the push rod (43) is rotatably connected to the lifting table (32a). A first elastic member is provided between the button (41) and the push rod (43). A clamping tooth (432) is provided on the circumferential side of the push rod (43), and a second elastic member abuts against the lifting table (32a). The claw sleeve (42) is provided with a first card slot (421) and a second card slot (422) corresponding to the clamping tooth (432). The first card slot (421) and the second card slot (422) are different in slot length. When the button (41) drives the push rod (43) through the first elastic member, the clamping tooth (432) switches between the first card slot (421) and the second card slot (422) under the action of the second elastic member to drive the lifting table (32a) to lift relative to the lifting hole (120).

8. The roller coding component according to claim 7, characterized in that A chute (423) is provided on the inner wall of the claw sleeve (42). A slider (412) corresponding to the chute (423) is provided on the circumferential side of the button (41). The button (41) is slidably mounted in the claw sleeve (42) by slidingly mating the slider (412) in the chute (423).

9. The roller coding assembly according to claim 7, wherein A driving tooth (411) is provided at the bottom end of the button (41). A stress tooth (431) corresponding to the driving tooth (411) is provided at the top end of the push rod (43). When the button (41) drives the push rod (43) through the first elastic member, the driving tooth (411) abuts against the stress tooth (431) to rotate the push rod (43), so as to drive the clamping tooth (432) to switch between the first card slot (421) and the second card slot (422).

10. The roller coding assembly according to claim 1, characterized in that A fixing part (312b) is provided on the elastic lever (31), and a slot is provided on the base (1) corresponding to the fixing part (312b). The elastic lever (31) is fixedly connected to the base (1) by inserting the fixing part (312b) into the slot.

11. The roller coding component according to claim 1 or 10, characterized in that, Circumferentially arranged teeth (21) are provided on the side surface of the roller (2), and grooves are formed between the teeth (21). A boss (311) is correspondingly provided at the presser wheel end. When the movable end contracts relative to the side surface of the roller (2), the boss (311) abuts against the side surface of the roller (2) and contacts the teeth (21) and the grooves, so that the roller (2) performs ratchet rolling.

12. The roller coding component according to claim 1 or 10, characterized in that, The switching mechanism includes: a push rod (43) and a rotating block (32b); the push rod (43) can move up and down relative to the base (1) to serve as the driving end; the rotating block (32b) is rotatably connected to the base (1), the rotating block (32b) abuts against the push rod (43) under the action of a spring (33b), and the rotating block (32b) can expand and contract relative to the side surface of the roller (2) as the push rod (43) moves up and down to serve as the movable end.

13. The roller coding component according to claim 12, characterized in that, The button (41) assembly includes: a button (41) and a claw sleeve (42). The claw sleeve (42) is connected to the base (1) corresponding to the push rod (43). The button (41) is slidably connected in the claw sleeve (42) with the top end of the button (41) exposed. The push rod (43) is slidably connected in the claw sleeve (42), and the top end of the push rod (43) faces the button (41). A conical surface (433b) connected to the rotating block (32b) is provided at the bottom end of the push rod (43). A first elastic member is provided between the button (41) and the push rod (43); engaging teeth (432) and a second elastic member abutting against the rotating block (32b) are provided on the circumferential side of the push rod (43). A first slot (421) and a second slot (422) are provided on the claw sleeve (42) corresponding to the engaging teeth (432), and the first slot (421) and the second slot (422) are different in slot length; when the button (41) drives the push rod (43) through the first elastic member, the engaging teeth (432) are switched between the first slot (421) and the second slot (422) under the action of the second elastic member to change the position of the push rod (43), so as to change the width of the part where the conical surface (433b) contacts the rotating block (32b), and further drive the rotating block (32b) to rotate.

14. The roller coding component according to claim 1 or 2 or 10, characterized in that Two elastic levers (31) are provided and are symmetrically arranged relative to the roller (2).

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