High-stability contactless hall-effect joystick potentiometer

Abstract

The present invention provides a high-stability contactless Hall-effect joystick potentiometer, comprising a base and a cover case, wherein the cover case covers the base to form an assembling space, a spring, a gland, and a joystick structure are sequentially arranged in the assembling space from bottom to top, and the joystick structure comprises a lower joystick arm, an upper joystick arm, and a joystick handle; a first protective shell is mounted on one side of the cover case, and a second protective shell is mounted on an adjacent side of the cover case; a first circuit board is mounted in the first protective shell, and a second circuit board is mounted in the second protective shell; a first contactless Hall sensor is mounted on the first circuit board, and a second contactless Hall sensor is mounted on the second circuit board; a magnet mounting recess is formed in the part of a free end of one side of each of the upper joystick arm and the lower joystick arm extending beyond the cover case, a first magnet is mounted in the magnet mounting recess of the lower joystick arm, and a second magnet is mounted in the magnet mounting recess of the upper joystick arm; a rotating shaft, the second magnet, and the second contactless Hall sensor are coaxially arranged. The stability of voltage output is improved.

Description

High-stability non-contact Hall effect rocker potentiometer TECHNICAL FIELD

[0001] The present application relates to the technical field of potentiometers, in particular to a high-stability non-contact Hall effect rocker potentiometer. BACKGROUND

[0002] A non-contact Hall effect rocker potentiometer is disclosed in Chinese Patent No. CN218038727U, authorized on December 13, 2022, which comprises a base and a cover. The cover is placed on the base to form an assembly space. Inside the assembly space, from bottom to top, there are a spring, a gland, a lower rocker arm, and an upper rocker arm. A handle is provided on the cover. One side of the handle penetrates the cover, the upper rocker arm, and the lower rocker arm, and is in contact with the gland. The upper rocker arm and the lower rocker arm are perpendicular to each other. A shaft is installed near the position of the lower rocker arm close to the gland. The shaft penetrates the handle. The free end of one side of the upper rocker arm and the lower rocker arm extends out of the cover and forms a magnet mounting seat. The bottom of the magnet mounting seat is provided with a through hole. A magnet mounting groove is provided in the magnet mounting seat, and a magnet is embedded in the magnet mounting groove. A circuit board is provided at the corresponding position of the base and the magnet mounting seat. A non-contact Hall sensor is provided on the circuit board to cooperate with the magnet. The service life is improved, and the temperature resistance and weather resistance are good. The existing technology has the following defects: the structure of the non-contact Hall sensor and the shaft is eccentric, which directly affects the stability of the voltage output during actual operation, thereby directly affecting the performance of the product. In addition, since the cover is basically a metal part and the lower rocker arm is a plastic part, the contact between the lower rocker arm and the cover during actual operation will directly cause wear, thereby greatly reducing the service life. In view of this situation, improvement is urgently needed. SUMMARY

[0003] To solve the above problems, the present application provides a high-stability non-contact Hall effect rocker potentiometer, which realizes coaxial arrangement of the shaft, the magnet, and the non-contact Hall sensor, thereby ensuring that the rotation center of the magnet, the non-contact Hall sensor, and the handle remains consistent, thereby directly improving the stability of the voltage output and having a long service life.

[0004] To achieve the above-mentioned purposes, the present application solves the problems by the following technical solutions:

[0005] The utility model provides a high stability non -contact hall effect rocker potentiometer, including base and cover, the cover is covered on the base forms the assembly space, the spring, the gland, the rocker structure are sequentially arranged from below to above in the assembly space, the rocker structure includes lower rocker arm, upper rocker arm and handle, one side of handle penetrates cover, upper rocker arm and lower rocker arm and gland are in contact with each other, upper rocker arm and lower rocker arm are orthogonal with each other, the position of upper rocker arm and lower rocker arm with handle all are equipped with the hole for the handle swing, the side of lower rocker arm near the gland is equipped with pivot, pivot penetrates handle and is equipped with the press part of the free end of one side of lower rocker arm that extends outside cover, the position of base with press part is equipped with key switch, the side of cover opposite with key switch is equipped with first protective housing, the side of cover adjacent is equipped with second protective housing,

[0006] First circuit board is installed in first protective housing, and second circuit board is installed in second protective housing, first non -contact hall sensor is installed on first circuit board, and second non -contact hall sensor is installed on second circuit board, the press part of the free end of one side of upper rocker arm and lower rocker arm that extends outside cover all are formed with magnet mounting groove, first magnet is installed in magnet mounting groove of lower rocker arm and cooperates with first non -contact hall sensor, second magnet is installed in magnet mounting groove of upper rocker arm and cooperates with second non -contact hall sensor, pivot, second magnet and second non -contact hall sensor are coaxial, first non -contact hall sensor and first magnet are coaxial, and the axis of first non -contact hall sensor and first magnet coincides with the length 50% of pivot,

[0007] The side of cover close to first non -contact hall sensor is equipped with first plastic fixing sleeve, and the side of cover close to key switch is equipped with second plastic fixing sleeve, and the end surface of both sides of lower rocker arm extension end is in contact with first plastic fixing sleeve and second plastic fixing sleeve.

[0008] Preferably, the opposite two side surfaces of the first plastic fixing sleeve in the width direction and the opposite two side surfaces of the second plastic fixing sleeve in the width direction are formed with the embedded clamping grooves for clamping and fixing with the cover.

[0009] Preferably, the cross-sectional length of the contact part of the lower rocker arm and the first plastic fixing sleeve is M, the cross-sectional length of the contact part of the first plastic fixing sleeve and the lower rocker arm is N, and M>N.

[0010] Preferably, a contact guide groove is formed at the contact position between the lower rocker arm and the second plastic fixing sleeve, the cross-sectional length of the contact surface between the second plastic fixing sleeve and the contact guide groove is E, the cross-sectional width of the contact guide groove is F, and F is greater than or equal to 2E; a first arc-shaped surface is formed on the inner side of the second plastic fixing sleeve and close to the position where the lower rocker arm extends.

[0011] Preferably, an accommodation cavity for accommodating the bottom of the handle is formed on the upper surface of the gland, and the accommodation cavity is coaxial with the handle; an R-shaped corner is formed on the side edge of the bottom end of the handle, and a second arc-shaped surface that cooperates with the R-shaped corner is formed on the side edge of the inner cavity of the bottom of the accommodation cavity.

[0012] Preferably, a leakage hole is formed at the center of the bottom of the gland, and the leakage hole is coaxial with the handle; an arc-shaped convex particle that extends into the leakage hole is formed at the center of the bottom of the handle, and a reset support convex particle that cooperates with the arc-shaped convex particle is arranged below the arc-shaped convex particle.

[0013] Preferably, an oil storage groove is arranged on the lower surface of the handle and around the arc-shaped convex particle.

[0014] Preferably, the cross-sectional width of the upper surface of the first plastic fixing sleeve is D, the wall thickness of the cover shell is G, and D is greater than or equal to 2G.

[0015] Preferably, a clamping convex buckle is arranged on each of the opposite sides of the width direction of the magnet mounting groove, and a first guide inclined surface is formed on the upper surface of each clamping convex buckle and close to the opening side of the magnet mounting groove.

[0016] Preferably, a second guide inclined surface is formed on each of the opposite sides of the length direction of the upper surface of the magnet mounting groove.

[0017] The beneficial effects of the present application are:

[0018] First, the rotation shaft, the second magnet, and the second non-contact Hall sensor are coaxial, the first non-contact Hall sensor and the first magnet are coaxial, and the axis of the first non-contact Hall sensor and the first magnet is coincided with the 50% length division axis of the rotation shaft, so as to ensure that the rotation center of the magnet, the non-contact Hall sensor, and the handle is consistent, thereby directly improving the stability of the voltage output.

[0019] Second, the first plastic fixing sleeve and the second plastic fixing sleeve are arranged to replace metal friction, thereby prolonging the service life to more than 10 million times and improving the service life.

[0020] Third, the cross-sectional length of the contact between the lower rocker arm and the first plastic fixing sleeve is set as M, the cross-sectional length of the contact between the first plastic fixing sleeve and the lower rocker arm is set as N, M>N, the contact area between the first plastic fixing sleeve and the lower rocker arm is increased, so that the deformation of the first plastic fixing sleeve is prevented, and the service life is improved;

[0021] Fourth, the contact guide groove is formed at the contact position between the lower rocker arm and the second plastic fixing sleeve, the cross-sectional length of the contact surface between the second plastic fixing sleeve and the contact guide groove is set as E, the cross-sectional width of the contact guide groove is set as F, F≥2E, the contact area between the second plastic fixing sleeve and the contact guide groove is reduced, so that the abrasion and deformation are reduced, the concentricity of the magnet, the non-contact Hall sensor and the handle is ensured, and the probability of the shaft center deviation caused by the abrasion and deformation is directly reduced;

[0022] Fifth, the inner side of the second plastic fixing sleeve and the position close to the extension of the lower rocker arm are formed with the first arc surface, the contact area is reduced through the contact between the first arc surface and the conical surface of the lower rocker arm, so that the abrasion and deformation are further reduced. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 is a perspective view of the present application.

[0024] Fig. 2 is an exploded view of the present application.

[0025] Fig. 3 is a first sectional view of the present application.

[0026] Fig. 4 is a second sectional view of the present application.

[0027] Fig. 5 is an enlarged view of A in Fig. 4.

[0028] Fig. 6 is an enlarged view of B in Fig. 4.

[0029] Fig. 7 is an enlarged view of C in Fig. 4.

[0030] Fig. 8 is a perspective view of the present application (hidden cover shell).

[0031] The reference signs are: lower rocker arm 12, upper rocker arm 11, rocker handle 10, cover 13, second lead-in inclined surface 14, reset support nub 15, leakage hole 16, oil reservoir 17, arc-shaped nub 18, spring 20, gland 19, first protective shell 21, first non-contact Hall sensor 22, first circuit board 23, second magnet 24, rotating shaft 25, base 26, second arc-shaped surface 27, first plastic fixing sleeve 28, second plastic fixing sleeve 29, first magnet 30, key switch 31, first lead-in inclined surface 32, rocker structure 33, second protective shell 34, storage cavity 36, R-shaped corner 37, first arc-shaped surface 38, contact guide groove 39, magnet mounting groove 40, clamping protrusion 41, embedded clamping groove 42, pressing portion 43, second circuit board 44, second non-contact Hall sensor 45. DETAILED DESCRIPTION

[0032] The application will be further described in conjunction with the embodiments and the drawings, but the embodiments of the application are not limited thereto.

[0033] Referring to FIGS. 1-8, a high-stability non-contact Hall-effect rocker potentiometer includes a base 26 and a cover 13, the cover 13 is arranged on the base 26 to form an assembly space, the assembly space is sequentially provided with a spring 20, a gland 19 and a rocker structure 33 from bottom to top, the rocker structure 33 includes a lower rocker arm 12, an upper rocker arm 11 and a rocker handle 10; one side of the rocker handle 10 penetrates the cover 13, the upper rocker arm 11 and the lower rocker arm 12 in sequence and is in contact with the gland 19; the upper rocker arm 11 and the lower rocker arm 12 are arranged orthogonally to each other; the upper rocker arm 11 and the lower rocker arm 12 are both provided with an avoidance hole corresponding to the rocker handle 10; a rotating shaft 25 is arranged on one side of the lower rocker arm 12 close to the gland 19; the rotating shaft 25 penetrates the rocker handle 10; a pressing portion 43 is formed on the part of the free end of one side of the lower rocker arm 12 extending out of the cover 13; a key switch 31 is arranged on the base 26 corresponding to the pressing portion 43; a first protective shell 21 is arranged on the side of the cover 13 opposite to the key switch 31, and a second protective shell 34 is arranged on the adjacent side of the cover 13.

[0034] The first protective shell 21 is provided with a first circuit board 23, and the second protective shell 34 is provided with a second circuit board 44; the first circuit board 23 is provided with a first non-contact Hall sensor 22, and the second circuit board 44 is provided with a second non-contact Hall sensor 45; the free end of the upper rocker arm 11 and the free end of the lower rocker arm 12, which extend out of the cover shell 13, are provided with a magnet mounting groove 40; the magnet mounting groove 40 of the lower rocker arm 12 is provided with a first magnet 30 matched with the first non-contact Hall sensor 22, and the magnet mounting groove 40 of the upper rocker arm 11 is provided with a second magnet 24 matched with the second non-contact Hall sensor 45; the rotation shaft 25, the second magnet 24 and the second non-contact Hall sensor 45 are coaxial; the first non-contact Hall sensor 22 and the first magnet 30 are coaxial, and the axis of the first non-contact Hall sensor 22 and the first magnet 30 is 50% of the length of the rotation shaft 25; through the above structure, the rotation center of the magnet, the non-contact Hall sensor and the handle are kept consistent, thereby directly improving the stability of the voltage output.

[0035] The cover shell 13 is provided with a first plastic fixing sleeve 28 on the side close to the first non-contact Hall sensor 22, and is provided with a second plastic fixing sleeve 29 on the side close to the key switch 31; the first plastic fixing sleeve 28 and the second plastic fixing sleeve 29 are in contact with the end faces of the two extending ends of the lower rocker arm 12. Through the first plastic fixing sleeve and the second plastic fixing sleeve, the metal friction is replaced, and the service life is improved to more than 100 million times.

[0036] The opposite two side faces of the first plastic fixing sleeve 28 in the width direction and the opposite two side faces of the second plastic fixing sleeve 29 in the width direction are provided with embedded clamping grooves 42 for clamping and fixing the cover shell 13. Through the above structure, the assembly is facilitated, and the production efficiency is improved.

[0037] The cross-sectional length of the contact part of the lower rocker arm 12 and the first plastic fixing sleeve 28 is set as M, the cross-sectional length of the contact part of the first plastic fixing sleeve 28 and the lower rocker arm 12 is set as N, and M>N. Through the above structure, the contact area of the first plastic fixing sleeve and the lower rocker arm is increased, thereby preventing the first plastic fixing sleeve from deforming and improving the service life.

[0038] The contact part of the lower rocker arm 12 and the second plastic fixing sleeve 29 is provided with a contact guide groove 39, the cross-sectional length of the contact surface of the second plastic fixing sleeve 29 and the contact guide groove 39 is set as E, the cross-sectional width of the contact guide groove 39 is set as F, and F≥2E; through the above structure, the contact area of the second plastic fixing sleeve and the contact guide groove is reduced, thereby reducing the probability of wear and deformation, laying a foundation for ensuring the concentricity of the magnet, the non-contact Hall sensor and the handle, and directly reducing the probability of the shaft center deviation caused by the wear and deformation.

[0039] The inner side of the second plastic fixing sleeve 29 and the position extending towards the lower rocker arm 12 is formed with a first arc surface 38. By the contact of the first arc surface with the conical surface of the lower rocker arm, the contact area is reduced, thereby further reducing the probability of wear and deformation.

[0040] The upper surface of the gland 19 is formed with a receiving cavity 36 for receiving the bottom of the handle 10, and the receiving cavity 36 is coaxial with the handle 10; the side edge of the bottom end of the handle 10 is formed with an R-shaped corner 37, and the side edge of the inner cavity of the bottom of the receiving cavity 36 is formed with a second arc surface 27 matched with the R-shaped corner 37. Through such structural arrangement, it conforms to the relationship F=F1L1 / L, wherein F represents the required input force value, F1 represents the force value of the spring 20, L represents the distance from the top of the handle 10 to the center of the shaft 25, and L1 represents the distance from the center of the shaft 25 to the arc surface of the R-shaped corner 37. Through the relationship, it can be obtained that in actual operation, L is constantly changing with the angle of action, that is, the action curve of the handle 10 changes, and under the supporting force of the spring 20, the curve generated by the handle 10 when it is actuated is slowly raised through the matching structure of the R-shaped corner 37 and the second arc surface 27, which on the one hand ensures that the embodiment can maintain good hand feeling when actuated, and on the other hand improves the service life of the structure.

[0041] The bottom center of the gland 19 is provided with a leakage hole 16 coaxial with the handle 10; the bottom center of the handle 10 is formed with an arc-shaped convex particle 18 extending into the leakage hole 16, and the bottom seat 26 located directly below the arc-shaped convex particle 18 is provided with a reset support convex particle 15 matched with the arc-shaped convex particle 18. Through the matching structure of the arc-shaped convex particle 18 and the reset support convex particle 15, on the one hand, it ensures good hand feeling during operation, and on the other hand, it ensures that the handle 10 will not be deformed due to excessive force during the process of pressing and returning, thereby improving the service life.

[0042] The lower surface of the handle 10 and the position surrounding the arc-shaped convex particle 18 are provided with an oil storage groove 17, and in actual use, lubricating oil can be filled in the oil storage groove 17 to improve the smoothness during operation, thereby further improving the hand feeling.

[0043] The cross-sectional width of the upper surface of the first plastic fixing sleeve 28 is D, the wall thickness of the cover shell 13 is G, and D≥2G. Through such structural arrangement, the contact area of the first plastic fixing sleeve 28 and the cover shell 13 is increased, thereby reducing the probability of deformation and improving the service life.

[0044] The two magnetic mounting grooves 40 are provided with clamping protrusions 41 on opposite sides in the width direction, and the upper surfaces of the clamping protrusions 41 on the two sides are formed with first guide inclined surfaces 32 close to the opening side of the magnetic mounting groove 40. By arranging the clamping protrusions 41, when the magnets are mounted in the two magnetic mounting grooves 40, the magnets are fixed by the clamping protrusions 41, so as to avoid the magnets from moving and affecting the concentricity, thereby laying a foundation for ensuring that the rotation center of the magnets, the non-contact Hall sensor and the handle are consistent.

[0045] The upper surfaces of the two magnetic mounting grooves 40 and the opposite sides in the length direction at the opening are formed with second guide inclined surfaces 14. By arranging the second guide inclined surfaces 14, the assembly is facilitated, and the assembly efficiency is improved.

[0046] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A high-stability non-contact Hall-effect rocker potentiometer, comprising a base (26) and a cover (13), the cover (13) covers the base (26) to form an assembly space, the assembly space is sequentially provided with a spring (20), a gland (19) and a rocker structure (33) from bottom to top, the rocker structure (33) comprises a lower rocker arm (12), an upper rocker arm (11) and a rocker handle (10); one side of the rocker handle (10) penetrates the cover (13), the upper rocker arm (11) and the lower rocker arm (12) in sequence and is in contact with the gland (19); the upper rocker arm (11) and the lower rocker arm (12) are orthogonally arranged; the upper rocker arm (11) and the lower rocker arm (12) are both provided with an avoiding hole corresponding to the rocker handle (10) for swinging of the rocker handle (10); a rotating shaft (25) is installed on one side of the lower rocker arm (12) close to the gland (19); the rotating shaft (25) penetrates the rocker handle (10); a pressing portion (43) is formed on the part of the free end of the lower rocker arm (12) extending out of the cover (13); a key switch (31) is installed on the base (26) corresponding to the pressing portion (43); a first protective shell (21) is installed on the side of the cover (13) opposite to the key switch (31), and a second protective shell (34) is installed on the adjacent side of the cover (13); characterized in that a first circuit board (23) is installed in the first protective shell (21), and a second circuit board (44) is installed in the second protective shell (34); a first non-contact Hall sensor (22) is installed on the first circuit board (23), and a second non-contact Hall sensor (45) is installed on the second circuit board (44); the part of the free end of the upper rocker arm (11) and the lower rocker arm (12) extending out of the cover (13) is formed with a magnet installation groove (40), a first magnet (30) cooperating with the first non-contact Hall sensor (22) is installed in the magnet installation groove (40) of the lower rocker arm (12), and a second magnet (24) cooperating with the second non-contact Hall sensor (45) is installed in the magnet installation groove (40) of the upper rocker arm (11); the rotating shaft (25), the second magnet (24) and the second non-contact Hall sensor (45) are coaxially arranged; the first non-contact Hall sensor (22) and the first magnet (30) are coaxial, and the axes of the first non-contact Hall sensor (22) and the first magnet (30) coincide with 50% of the length of the rotating shaft (25); a first plastic fixing sleeve (28) is arranged on the side of the cover (13) close to the first non-contact Hall sensor (22), a second plastic fixing sleeve (29) is arranged on the side of the cover (13) close to the key switch (31), and the first plastic fixing sleeve (28) and the second plastic fixing sleeve (29) are in contact with the end faces of the two extending ends of the lower rocker arm (12).

2. A highly stable non-contact Hall effect rocker potentiometer according to claim 1, characterized in that, The opposite two side faces of the first plastic fixing sleeve (28) and the opposite two side faces of the second plastic fixing sleeve (29) are formed with the embedded clamping grooves (42) for clamping and fixing the cover shell (13).

3. A highly stable non-contact Hall effect rocker potentiometer according to claim 2, wherein, The cross-sectional length of the contact part of the lower rocker arm (12) and the first plastic fixing sleeve (28) is set as M, the cross-sectional length of the contact part of the first plastic fixing sleeve (28) and the lower rocker arm (12) is set as N, and M>N.

4. A highly stable non-contact Hall effect rocker potentiometer according to claim 3, wherein, The contact part of the lower rocker arm (12) and the second plastic fixing sleeve (29) is formed with the contact guide groove (39), the cross-sectional length of the contact surface of the second plastic fixing sleeve (29) and the contact guide groove (39) is set as E, the cross-sectional width of the contact guide groove (39) is set as F, and F≥2E; the inner side face of the second plastic fixing sleeve (29) and the position close to the extension of the lower rocker arm (12) are formed with the first arc face (38).

5. A highly stable non-contact Hall effect rocker potentiometer according to any one of claims 1-4, characterized in that, The upper surface of the pressure cover (19) is formed with the receiving cavity (36) for receiving the bottom of the handle (10), the receiving cavity (36) is coaxial with the handle (10); the side edge of the bottom end of the handle (10) is formed with the R-shaped corner (37), and the side edge of the inner cavity bottom of the receiving cavity (36) is formed with the second arc face (27) matched with the R-shaped corner (37).

6. A highly stable non-contact Hall effect rocker potentiometer according to claim 5, wherein, The bottom center of the pressure cover (19) is provided with the leakage hole (16), and the leakage hole (16) is coaxial with the handle (10); the bottom center of the handle (10) is formed with the arc convex particle (18) extending into the leakage hole (16), and the bottom seat (26) located directly below the arc convex particle (18) is provided with the reset support convex particle (15) matched with the arc convex particle (18).

7. A highly stable non-contact Hall effect rocker potentiometer according to claim 6, wherein, The lower surface of the handle (10) and the position around the arc convex particle (18) are provided with the oil storage groove (17).

8. A highly stable non-contact Hall effect rocker potentiometer according to claim 3, wherein, The cross-sectional width of the upper surface of the first plastic fixing sleeve (28) is set as D, the wall thickness of the cover shell (13) is set as G, and D≥2G.

9. A highly stable non-contact Hall effect rocker potentiometer according to claim 7, wherein, The opposite two sides of the width direction of the two magnet mounting grooves (40) are provided with the clamping convex buckles (41), and the upper surfaces of the two clamping convex buckles (41) close to the opening side of the magnet mounting groove (40) are formed with the first guide inclined face (32).

10. A highly stable non-contact Hall effect rocker potentiometer according to claim 9, wherein, The upper surfaces of the two magnet mounting grooves (40) and the opposite two sides of the length direction of the opening are formed with the second guide inclined face (14).

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