Multi-gear roller adjusting device

Abstract

The invention discloses a multi-gear roller adjusting device. The multi-gear roller adjusting device solves the problem that the stop position of an existing roller adjusting device is random. The multi-gear roller adjusting device comprises a shell and a roller, the shell is provided with a mounting seat, the roller is rotationally connected with the mounting seat, one of the roller and the mounting seat is provided with a locking part, an elastic arm is integrally formed on the other one of the roller and the mounting seat, the locking part is provided with a plurality of locking grooves distributed at intervals in the rotating direction of the roller, and the elastic arm is arranged in the locking grooves. The rolling wheel is provided with a locking groove, the free end of the elastic arm is provided with a locking block protruding towards the locking groove, the rolling wheel has a stopping state and a rolling state, in the stopping state, the locking block is embedded into one locking groove, and in the rolling state, the elastic arm elastically deforms so that the locking block can slide relative to the locking groove. According to the multi-gear rolling wheel adjusting device, the structure of a rolling wheel locking mechanism in the rolling wheel adjusting device is simplified, and the material cost and the labor cost of the rolling wheel adjusting device are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of adjusting devices, in particular to a multi-position roller adjusting device. Background Art

[0002] Common roller adjustment devices usually adjust the parameters of the device through a roller, thereby controlling the working parameters of the working equipment connected to the adjustment device, such as power, angle, direction, light color temperature, etc.

[0003] Conventional technology typically uses a spring, a steel ball, and a slot to achieve roller positioning. For details, see Chinese Utility Model Patent Publication No. CN217214559U, entitled "A Vehicle Roller Switch." However, this structure requires separate assembly of the steel ball and spring, increasing the material and labor costs of the roller adjustment device. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and propose a multi-speed roller adjustment device to solve the problem of high cost of the existing roller adjustment device.

[0005] In order to achieve the above technical objectives, the present invention proposes a multi-speed roller adjustment device, a housing and a roller, wherein the housing is provided with a mounting seat, the roller is rotatably connected to the mounting seat, a locking portion is provided on one of the roller and the mounting seat, and an elastic arm is integrally formed on the other, the locking portion has a plurality of locking grooves spaced apart along the rotation direction of the roller, and the free end of the elastic arm is provided with a locking block protruding toward the locking groove, The roller has a stationary state and a rolling state. In the stationary state, the locking block is engaged in one of the locking grooves. In the rolling state, the elastic arm is elastically deformed to enable the locking block to slide relative to the locking groove.

[0006] The multi-speed roller adjustment device of the present invention has multiple locking grooves on the locking part and cooperates with the elastic arm to form multiple locking gears for locking the roller. The static locking and sliding unlocking of the roller are achieved through the cooperation of the elastic arm and the locking groove. The structure is simple and the positioning is reliable. Since the elastic arm is integrally formed with the roller or the mounting seat, the structure of the roller locking mechanism in the roller adjustment device is simplified. At the same time, the elastic arm does not need to be assembled, thereby reducing the material and labor costs of the roller adjustment device.

[0007] Preferably, a first stop rib and a second stop rib are respectively provided on two radially opposite sides of the roller, and a first limiting wall and a second limiting wall are correspondingly provided on the mounting seat. The first limiting wall stops the first stop rib at the extreme position of the roller rotating along the first direction, and the second limiting arm stops the second limiting rib at the extreme position of the roller rotating along the second direction. The first direction is opposite to the second direction.

[0008] By adopting the above technical solution, the roller adjustment device can limit the rolling range of the roller, thereby preventing the roller from rotating excessively.

[0009] Preferably, the locking portion includes a first locking rib close to the first stopping rib and a second locking rib close to the second stopping rib, and the first locking rib and the second locking rib protrude toward the elastic arm; When the first limiting wall stops the first stopping rib, the first locking rib stops the locking block to limit the roller from rotating along the second direction; When the second limiting wall stops the second stopping rib, the second locking rib stops the locking block to limit the roller from rotating along the first direction.

[0010] By adopting the above technical solution, the multi-speed roller adjusting device can form two additional locking gears on both sides of the locking portion, thereby increasing the adjustable gears in the multi-speed roller adjusting device.

[0011] Preferably, the locking portion includes at least three locking ribs protruding toward the elastic arm, and the locking groove is formed between two adjacent locking ribs.

[0012] By adopting the above-mentioned technical solution, since the locking groove is the force-bearing part, by forming the locking groove between two adjacent locking ribs, on the one hand, it helps to increase the strength of the roller or the mounting seat at the locking groove position, thereby improving the service life of the roller or the mounting seat; on the other hand, it also avoids the need to increase the thickness of the adjacent position to compensate for the depression of the locking groove in order to increase the strength of the locking groove position, thereby reducing the amount of material used and avoiding material waste, thereby reducing the material cost of the multi-speed roller adjustment device.

[0013] Preferably, the locking rib is in a strip shape, and the cross section of the locking rib smoothly transitions from the highest point to both sides.

[0014] By adopting the above-mentioned technical solution, the shape of the locking rib makes it difficult for the locking block to stay on the locking rib, and the locking block is more easily embedded in the locking groove and enters a stationary state; and it can also reduce the resistance of the locking block when sliding relative to the locking groove, making the rolling of the roller smoother.

[0015] Preferably, the locking block has an end facing the locking groove that is spherical or conical.

[0016] By adopting the above-mentioned technical solution, the friction between the locking block and the locking rib is reduced, so that the locking block can slide more smoothly relative to the locking rib, further reducing jamming and improving the smoothness of the roller rolling.

[0017] Preferably, the elastic arm is elastically deformed along the axial direction of the roller, and the plurality of locking grooves are distributed at intervals in a fan shape on the axial side surface of the roller or the mounting seat.

[0018] By adopting the above-mentioned technical solution, by setting the elastic arm to elastically deform along the axial direction of the roller, the force applied by the user on the roller is prevented from acting on the elastic arm or the locking groove, so that when the user turns the roller, the roller can maintain a roughly unchanged operating feel, thereby improving the user experience.

[0019] Preferably, a separation groove is provided between the mounting seat or the roller and the elastic arm.

[0020] By adopting the above-mentioned technical solution, the elastic arm forms a cantilever structure. Compared with other complex structures, the cantilever structure is relatively simple and has sufficient reliability. On the basis of ensuring the normal function of the elastic arm, the elastic arm is easier to design and integrally formed, which helps to reduce costs.

[0021] Preferably, the mounting seat includes a first support and a second support, and the roller is provided with a rotating shaft, and both ends of the rotating shaft are rotatably connected to the first support and the second support respectively.

[0022] By adopting the above-mentioned technical solution, the mounting seat can stably support the roller, improve the stability and reliability of the roller rotation, and reduce the shaking of the roller during rotation.

[0023] Preferably, the first support and the second support are respectively provided with connecting grooves, and the two connecting grooves are respectively rotatably connected to the two ends of the rotating shaft. The rotating shaft is provided with a front limit plate and a rear limit plate, and at least one of the connecting grooves is located between the front limit plate and the rear limit plate, and the front limit plate and the rear limit plate limit the axial movement of the rotating shaft.

[0024] By adopting the above-mentioned technical solution, the axial movement of the roller is limited by the front limit plate and the rear limit plate, thereby reducing the left and right shaking of the roller when the user turns the roller, thereby improving the user experience.

[0025] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1An exploded schematic diagram of a multi-position roller adjustment device according to an embodiment of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 Another exploded schematic diagram of the multi-position roller adjustment device according to an embodiment of the present invention; Figure 4 is a schematic diagram of a roller in an embodiment of the present invention; Figure 5 is a schematic diagram of a mounting base according to an embodiment of the present invention; Figure 6 A cross-sectional view of a multi-position roller adjustment device according to an embodiment of the present invention; Figure 7 Schematic diagram of the cooperation between the locking portion and the elastic arm in an embodiment of the present invention.

[0027] Reference numerals: 100, housing, 110, bottom housing, 120, cover, 121, operating window, 130, mounting seat, 131, first support, 1311, first limiting wall, 1312, second limiting wall, 132, second support, 133, connecting groove, 134, opening, 140, elastic arm, 150, locking block, 151, base, 152, locking head, 160, partition groove; 200, roller, 201, mounting groove, 210, locking portion, 211, locking groove, 212, locking rib, 2121, first locking rib, 2122, second locking rib, 220, first stop rib, 230, second stop rib, 240, rotating shaft, 241, front limit plate, 242, rear limit plate. DETAILED DESCRIPTION

[0028] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are 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 understood as limiting the present invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" or "several" means two or more, unless otherwise explicitly specified.

[0031] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0032] like Figures 1 to 7 As shown, the multi-gear roller adjustment device proposed in the embodiment of the present invention includes a housing 100 and a roller 200 . The housing 100 is provided with a mounting seat 130 , and the roller 200 is rotatably connected to the mounting seat 130 .

[0033] In this embodiment, the housing 100 includes a bottom shell 110 and a cover 120 . The cover 120 is fastened to the bottom shell 110 by snaps, and the mounting seat 130 is provided on the bottom shell 110 .

[0034] In this embodiment, a locking portion 210 is provided on the roller 200, and a resilient arm 140 is integrally formed on the mounting base 130. The locking portion 210 has a plurality of locking grooves 211 spaced apart along the rotational direction of the roller 200. One end of the resilient arm 140 is fixed to the mounting base 130, and the free end of the resilient arm 140 is provided with a locking block 150 that protrudes toward the locking groove 211. The roller 200 has a rolling state and a stationary state. In the stationary state, the locking block 150 is engaged with one of the locking grooves 211. In the rolling state, the elastic deformation of the resilient arm 140 causes the locking block 150 to slide relative to the locking groove 211.

[0035] The roller 200 or the housing 100 is made of plastic and is integrally formed by injection molding. The elastic arm 140 utilizes the inherent elasticity of the plastic material to achieve its elastic deformation and reset. The multiple locking grooves 211 cooperate with the locking blocks 150 to form multiple locking gears for locking the roller 200.

[0036] In some other embodiments, the elastic arm 140 may be integrally formed on the roller 200 , and the locking portion 210 may be provided on the mounting seat 130 .

[0037] In this embodiment, the cover 120 is provided with an operating window 121, through which a portion of the scroll wheel 200 is operably exposed. The scroll wheel 200 is circumferentially provided with shifting grooves. A gap is left between the perimeter of the scroll wheel 200 exposed through the operating window 121 and the operating window 121. The operating window 121 is recessed toward the scroll wheel 200, creating a space for the user to operate the scroll wheel 200.

[0038] In this embodiment, the parameters of the multi-speed roller adjustment device are adjusted by rotating the roller 200 , and the specific adjustment method will be described in detail in subsequent embodiments.

[0039] In the multi-speed roller adjustment device of the present invention, the multiple locking grooves 211 on the locking portion 210 cooperate with the elastic arm 140 to form multiple locking gears for locking the roller 200. The stationary locking and sliding unlocking of the roller 200 are achieved through the cooperation of the elastic arm 140 and the locking groove 211. The structure is simple and the positioning is reliable. Since the elastic arm 140 is integrally formed with the roller 200 or the mounting seat 130, the structure of the roller locking mechanism in the roller adjustment device is simplified. At the same time, the elastic arm 140 does not need to be assembled, thereby reducing the material and labor costs of the roller adjustment device.

[0040] In this embodiment, the locking block 150 and the elastic arm 140 are integrally formed.

[0041] In some other embodiments, the locking block 150 may also be installed on the elastic arm 140 .

[0042] In this embodiment, if Figure 2 As shown, the mounting base 130 includes a first support 131 and a second support 132. The roller 200 is provided with a rotating shaft 240, and the two ends of the rotating shaft 240 are respectively rotatably connected to the first support 131 and the second support 132. Among them, the first support 131 is close to the outside of the housing 100, and the second support 132 is close to the inside of the housing 100.

[0043] By providing the first support 131 and the second support 132 , the mounting base 130 can stably support the roller 200 , thereby improving the stability and reliability of the rotation of the roller 200 and reducing the shaking of the roller 200 during rotation.

[0044] In order to limit the rotation range of the roller 200, in this embodiment, as shown in FIG. Figures 3 to 5As shown, a first stop rib 220 and a second stop rib 230 are respectively provided on two radially opposite sides of the roller 200, and a first limiting wall 1311 and a second limiting wall 1312 are correspondingly provided on the mounting seat 130. The first limiting wall 1311 stops the first stop rib 220 at the extreme position of the roller 200 rotating along the first direction, and the second limiting wall 1312 stops the second stop rib 230 at the extreme position of the roller 200 rotating along the second direction. The first direction is opposite to the second direction.

[0045] In this embodiment, the first limiting wall 1311 and the second limiting wall 1312 are disposed on both sides of the first support 131 .

[0046] In some other embodiments, the first limiting wall 1311 and the second limiting wall 1312 can also be respectively arranged on the first support 131 and the second support 132, and the first stop rib 220 and the second stop rib 230 are arranged opposite to each other along the radial direction of the roller 200 and located on both sides of the axial direction of the roller 200.

[0047] Such an arrangement enables the roller adjustment device to limit the rolling range of the roller 200 , thereby preventing the roller 200 from excessively rotating.

[0048] In one embodiment, Figures 3 to 5 As shown, the locking portion 210 includes a first locking rib 2121 close to the first stopping rib 220 and a second locking rib 2122 close to the second stopping rib 230 , and the first locking rib 2121 and the second locking rib 2122 protrude toward the elastic arm 140 .

[0049] When the first limiting wall 1311 stops the first stop rib 220 to limit the roller 200 from rotating in the first direction, the first locking rib 2121 stops the locking block 150 to limit the roller 200 from rotating in the second direction. The roller 200 is restricted from rotating in the first and second directions, thereby forming an additional locking position on the side outside the locking portion 210 close to the first stop rib 220. When the user applies force to rotate the roller 200 in the second direction, the elastic deformation of the elastic arm 140 causes the locking block 150 to slide relative to the first locking rib 2121, and the roller 200 enters a rolling state.

[0050] When the second limiting wall 1312 stops the second stop rib 230 to limit the roller 200 from rotating in the second direction, the second locking rib 2122 stops the locking block 150 to limit the roller 200 from rotating in the first direction. The roller 200 is restricted from rotating in the first and second directions, thereby forming an additional locking position on the side outside the locking portion 210 close to the second stop rib 230. When the user applies force to rotate the roller 200 in the first direction, the elastic deformation of the elastic arm 140 causes the locking block 150 to slide relative to the second locking rib 2122, and the roller 200 enters a rolling state.

[0051] In this way, the multi-position roller adjusting device forms two additional locking positions on both sides of the locking portion 210, thereby increasing the adjustable positions in the multi-position roller adjusting device.

[0052] In one embodiment, Figure 4 As shown, the locking portion 210 includes at least three locking ribs 212 protruding toward the elastic arm 140 , and a locking groove 211 is formed between two adjacent locking ribs 212 .

[0053] Since the locking groove 211 is a force-bearing part, by forming the locking groove 211 between two adjacent locking ribs 212, on the one hand, it helps to increase the strength of the roller 200 or the mounting seat 130 at the locking groove 211 position, thereby improving the service life of the roller 200 or the mounting seat 130; on the other hand, it also avoids the need to increase the thickness of the adjacent position to compensate for the decrease in strength caused by the depression of the locking groove 211 in order to increase the strength of the locking groove 211 position, thereby reducing the amount of material used and avoiding material waste, thereby reducing the material cost of the multi-speed roller adjustment device.

[0054] In one embodiment, Figure 4 As shown, the at least three locking ribs 212 include a first locking rib 2121 and a second locking rib 2122 , and the first locking rib 2121 and the second locking rib 2122 are respectively located on both sides of the locking portion 210 .

[0055] In this way, the elastic arm 140 has the same deformation when switching between multiple locking positions including those on both sides of the locking portion 210. During the rotation of the roller 200, the deformation of the elastic arm 140 is relatively stable, which helps to improve the service life of the elastic arm 140.

[0056] It is understandable that in some other embodiments, the locking portion 210 may also be partially recessed between the first locking rib 2121 and the second locking rib 2122 to form a plurality of locking grooves 211 .

[0057] In one embodiment, Figure 4 、 Figure 7 As shown, the locking rib 212 is strip-shaped, and the cross section of the locking rib 212 smoothly transitions from the highest point to both sides.

[0058] The shape of the locking rib 212 makes it difficult for the locking block 150 to stay on the locking rib 212, and the locking block 150 is more easily embedded in the locking groove 211 and enters a stationary state; and it can also reduce the resistance when the locking block 150 slides relative to the locking groove 211, making the rolling of the roller 200 smoother.

[0059] In one embodiment, Figure 2As shown, the locking block 150 has one end facing the locking groove 211 in a spherical or conical shape.

[0060] In this way, the friction between the locking block 150 and the locking rib 212 is reduced, so that the locking block 150 can slide more smoothly relative to the locking rib 212, further reducing the jamming and improving the smoothness of the rolling of the roller 200.

[0061] In one embodiment, Figures 2 to 4 As shown, the elastic arm 140 is disposed on the mounting seat 130 , and the elastic arm 140 elastically deforms along the axial direction of the roller 200 . A plurality of locking grooves 211 are distributed at intervals on the axial side of the roller 200 in a fan-shaped manner.

[0062] In another embodiment, the elastic arm 140 may also be provided on the roller 200 , and the elastic arm 140 elastically deforms along the axial direction of the roller 200 , and the plurality of locking grooves 211 are distributed in a fan-shaped manner at intervals on the axial side surface of the mounting seat 130 .

[0063] When the user rolls the scroll wheel 200, a radial force is applied to the scroll wheel 200. If the elastic arm 140 elastically deforms along the radial direction of the scroll wheel 200, the force applied to the scroll wheel 200 will act on the elastic arm 140, causing the friction between the locking block 150 and the locking groove 211 to change, resulting in a change in the rolling feel of the scroll wheel 200.

[0064] By setting the elastic arm 140 to elastically deform along the axial direction of the roller 200, the force applied by the user to the roller 200 is prevented from acting on the elastic arm 140 or the locking groove 211, so that when the user turns the roller 200, the roller 200 can maintain a roughly unchanged operating feel, thereby improving the user's experience.

[0065] In one embodiment, Figure 2 As shown, the locking block 150 includes a base 151 and a locking head 152. The base 151 is connected to the elastic arm 140. The locking head 152 is arranged at one end of the base 151 away from the elastic arm 140. The locking head 152 has a spherical or conical end facing the locking groove 211.

[0066] Under the same displacement, the longer the length of the locking block 150 in the deformation direction of the elastic arm 140 is, the smaller the required deformation of the elastic arm 140 is. Increasing the length of the locking block 150 in the deformation direction of the elastic arm 140 helps reduce the required elastic deformation of the elastic arm 140 and increase the service life of the elastic arm 140. However, increasing the length of the locking block 150 reduces the structural strength of the locking block 150.

[0067] In this embodiment, the locking block 150 is divided into a base 151 and a locking head 152. The diameter of the base 151 is larger than the diameter of the locking head 152. This not only increases the length of the locking block 150 in the deformation direction of the elastic arm 140, but also ensures that the strength of the locking block 150 is not significantly reduced when the length is increased, thereby improving the service life of the elastic arm 140.

[0068] In one embodiment, Figure 2 As shown, the elastic arm 140 is disposed on the mounting seat 130 , and a separation groove 160 is provided between the mounting seat 130 and the elastic arm 140 , so that the elastic arm 140 forms a cantilever structure.

[0069] In some other embodiments, the elastic arm 140 is disposed on the roller 200 , and a separation groove 160 is defined between the roller 200 and the elastic arm 140 .

[0070] Such a setting enables the elastic arm 140 to form a cantilever structure. Compared with other complex structures, the cantilever structure is relatively simple and has sufficient reliability. On the basis of ensuring the normal function of the elastic arm 140, the elastic arm 140 is easier to design and integrally molded, which helps to reduce costs.

[0071] In one embodiment, Figure 4 、 Figure 5 As shown, the first support 131 and the second support 132 are respectively provided with connecting grooves 133, and the two connecting grooves 133 are respectively rotated to connect the two ends of the rotating shaft 240. The rotating shaft 240 is provided with a front limit plate 241 and a rear limit plate 242. At least one connecting groove 133 is located between the front limit plate 241 and the rear limit plate 242. The front limit plate 241 and the rear limit plate 242 limit the axial movement of the rotating shaft 240.

[0072] In this embodiment, the front limiting plate 241 and the rear limiting plate 242 are both provided on one end of the rotating shaft 240 , and the front limiting plate 241 and the rear limiting plate 242 are respectively limited at the front and rear ends of the connecting groove 133 of the first support 131 .

[0073] In some other embodiments, the front limiting plate 241 and the rear limiting plate 242 may also be respectively disposed at the two ends of the rotation.

[0074] The front limiting plate 241 and the rear limiting plate 242 limit the axial movement of the roller 200, thereby reducing the left and right shaking of the roller 200 when the user moves the roller 200, thereby improving the user experience.

[0075] In one embodiment, based on the multi-position roller adjustment device of the above embodiment, as Figure 2As shown, the connecting groove 133 has an opening 134 that opens toward the rotating shaft 240. The rotating shaft 240 is inserted into the connecting groove 133 through the opening 134. The minimum width of the opening 134 is smaller than the diameter of the rotating shaft 240. The rotating shaft 240 can be inserted into the connecting groove 133 through the opening 134 due to the elastic deformation of the rotating shaft 240 or the connecting groove 133.

[0076] A limiting rib is provided on at least one side of the upper end of the opening 134 , and the limiting rib reduces the minimum width of the opening 134 .

[0077] Such an arrangement enables the roller 200 to be well rotatably limited on the mounting seat 130 , thereby improving the installation stability of the roller 200 and reducing the probability of the roller 200 detaching from the mounting seat 130 .

[0078] In one embodiment, the rotation of the roller 200 is used to adjust the parameters of the multi-speed roller adjustment device. Figure 1 、 Figure 6 As shown, the multi-speed roller adjustment device also includes a circuit board. The roller 200 is provided with a mounting groove 201 for accommodating the circuit board. The circuit board rotates with the roller 200. The rotation of the circuit board realizes the adjustment of the parameters of the multi-speed roller adjustment device.

[0079] In some embodiments, the tilt angle or rotation angle of the circuit board can be sensed by a sensor to achieve parameter adjustment.

[0080] For example, a gyroscope sensor for sensing the tilt angle of the circuit board may be provided on the circuit board, and parameter adjustment is achieved through the sensing signal of the gyroscope sensor.

[0081] For another example, a magnet is provided on one of the circuit board and the housing 100, and a Hall element is provided on the other. The rotation of the roller 200 causes the straight-line distance and straight-line direction of the magnet and the Hall element to change. The tilt angle or rotation angle of the circuit board is obtained through the induction signal of the Hall element, thereby realizing parameter adjustment.

[0082] For another example, the rotation direction and rotation amplitude of the roller 200 are sensed by a grating and a photoelectric sensor, thereby achieving parameter adjustment.

[0083] In some other embodiments, the parameters can also be adjusted by rotating the circuit board through the circuit structure.

[0084] For example, a conductive contact is provided on the circuit board, and a plurality of conductive contacts at different positions are correspondingly provided in the housing 100 . The rotation of the circuit board causes the contacts at different positions to be conductive, thereby achieving parameter adjustment.

[0085] In some other embodiments, the rotation of the circuit board may cause changes in the resistance, capacitance, or electric field of components on the circuit board, and the parameters are adjusted through the above changes.

[0086] By installing the circuit board on the roller 200, the rotation of the roller 200 can be more easily detected, thereby improving the adjustment accuracy of the multi-speed roller adjustment device.

[0087] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art will understand that the present invention includes, but is not limited to, the contents described in the drawings and the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the present invention are intended to be included within the scope of the claims.

Claims

1. A multi-position roller adjustment device, comprising a housing and a roller, wherein the housing is provided with a mounting seat, and the roller is rotatably connected to the mounting seat, characterized in that: A locking portion is provided on one of the roller and the mounting seat, and an elastic arm is integrally formed on the other. The locking portion has a plurality of locking grooves spaced apart along the rotation direction of the roller, and a locking block protruding toward the locking groove is provided at the free end of the elastic arm. The roller has a stationary state and a rolling state. In the stationary state, the locking block is engaged in one of the locking grooves. In the rolling state, the elastic arm is elastically deformed to enable the locking block to slide relative to the locking groove.

2. The multi-position roller adjustment device according to claim 1, characterized in that: A first stop rib and a second stop rib are respectively provided on two radially opposite sides of the roller, and a first limiting wall and a second limiting wall are correspondingly provided on the mounting seat. The first limiting wall stops the first stop rib at the extreme position of the roller rotating along the first direction, and the second limiting wall stops the second stop rib at the extreme position of the roller rotating along the second direction. The first direction is opposite to the second direction.

3. The multi-position roller adjustment device according to claim 2, characterized in that: The locking portion includes a first locking rib close to the first stopping rib and a second locking rib close to the second stopping rib, wherein the first locking rib and the second locking rib protrude toward the elastic arm; When the first limiting wall stops the first stopping rib, the first locking rib stops the locking block to limit the roller from rotating along the second direction; When the second limiting wall stops the second stopping rib, the second locking rib stops the locking block to limit the roller from rotating along the first direction.

4. The multi-position roller adjustment device according to claim 1, characterized in that: The locking portion includes at least three locking ribs protruding toward the elastic arm, and the locking groove is formed between two adjacent locking ribs.

5. The multi-position roller adjustment device according to claim 4, characterized in that: The locking rib is strip-shaped, and the cross section of the locking rib smoothly transitions from the highest point to both sides.

6. The multi-position roller adjustment device according to claim 1, characterized in that: The locking block has an end facing the locking groove that is spherical or conical.

7. The multi-position roller adjustment device according to claim 1, characterized in that: The elastic arm is elastically deformed along the axial direction of the roller, and the plurality of locking grooves are distributed at intervals in a fan shape on the axial side surface of the roller or the mounting seat.

8. The multi-position roller adjustment device according to claim 1, characterized in that: A separation groove is provided between the mounting seat or the roller and the elastic arm.

9. The multi-position roller adjustment device according to claim 1, characterized in that: The mounting seat includes a first support and a second support. The roller is provided with a rotating shaft, and both ends of the rotating shaft are rotatably connected to the first support and the second support respectively.

10. The multi-position roller adjustment device according to claim 9, characterized in that: The first support and the second support are respectively provided with connecting grooves, and the two connecting grooves are respectively rotatably connected to the two ends of the rotating shaft. The rotating shaft is provided with a front limit plate and a rear limit plate. At least one of the connecting grooves is located between the front limit plate and the rear limit plate. The front limit plate and the rear limit plate limit the axial movement of the rotating shaft.

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