Dual-purpose multidirectional rocker potentiometer structure

Abstract

The utility model provides a dual -purpose formula multidirectional rocker potentiometer structure, including casing, base, rocker structure, first detection device, second detection device, FPC board, FPC board is installed in the base inner chamber bottom, the casing cover is established on the base and forms the assembly inner chamber, first detection device and second detection device are correspondingly set up in the assembly inner chamber, and the lower part of rocker structure is installed in the casing, when adapting non -contact potentiometer, first detection device and second detection device all include first sliding seat, permanent magnet block, hall effect sensor, when adapting contact potentiometer, first detection device and second detection device all include second sliding seat, brush, carbon film resistance body, can under the premise of not changing core component and mould, perfect adaptation contact potentiometer's installation demand also can efficient matching non -contact sensor's magnetic field arrangement requirement to realize the platform design of product, mould cost is saved obviously.

Description

Technical Field

[0001] This utility model relates to the field of potentiometer technology, specifically to a dual-purpose multi-directional rocker potentiometer structure. Background Technology

[0002] Multi-directional joysticks, as a key human-computer interaction input device, are widely used in game controllers, industrial remote control equipment, medical devices, and aerospace. Their core function is to allow the operator to move the joystick, causing it to tilt in multiple directions, which in turn drives an internal mechanism to convert physical displacement into electrical signal output.

[0003] Chinese patent application publication number CN114237341A, published on March 25, 2022, discloses a multi-directional rocker structure, including a housing, a rocker head, a rocker spindle, a first rocker component, a second rocker component, a first detection device, a second detection device, and a support component. The top of the rocker spindle extends from the top of the housing, and the rocker head is fixed to the top of the rocker spindle. A swing channel is provided in the middle of the rocker spindle, through which the first rocker component passes along its longitudinal extension direction. A strip-shaped through hole is provided at the top of the second rocker component, through which the top of the rocker spindle passes from bottom to top. The first detection device is used to detect the swing amplitude of the first rocker component, and the second detection device is used to detect the swing amplitude of the second rocker component. The support component supports the bottom of the rocker spindle, allowing the rocker spindle to return from an inclined state to its original position. The existing technology has the following drawbacks: for both contact potentiometers and non-contact potentiometers, the "one product, one mold" model requires the redevelopment of an entire set of molds when expanding the product line, which greatly increases R&D costs and manufacturing complexity, and lacks versatility and flexibility. Given this situation, there is an urgent need for improvement. Utility Model Content

[0004] To address the above issues, this utility model provides a dual-purpose multi-directional rocker potentiometer structure that can perfectly adapt to the installation requirements of contact potentiometers and efficiently match the magnetic field arrangement requirements of non-contact sensors without changing core components and molds. This enables platform-based product design and significantly saves mold costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A dual-purpose multi-directional rocker potentiometer structure includes a housing, a base, a rocker structure, a first detection device, a second detection device, and an FPC board. The FPC board is installed at the bottom of the inner cavity of the base. The housing covers the base to form an assembly cavity. The first and second detection devices are correspondingly arranged in the assembly cavity. The lower part of the rocker structure is installed in the housing.

[0007] When adapting to a non-contact potentiometer, both the first detection device and the second detection device include a first sliding seat, a permanent magnet block, and a Hall effect sensor. A fitting groove for receiving the permanent magnet block is provided on one side of the lower surface of the first sliding seat. The permanent magnet block is fitted and fixed in the fitting groove. The Hall effect sensor is mounted on the FPC board and its position is adapted to the permanent magnet block of the first detection device and the second detection device, respectively.

[0008] When adapted to a contact potentiometer, both the first and second detection devices include a second sliding seat, a brush, and a carbon film resistor. A positioning pin is centrally protruding from the lower surface of the second sliding seat. The positioning pin passes through the brush and is interference-fitted with the positioning pin. The carbon film resistor is correspondingly disposed on the FPC board and its position is adapted to the brush of the first and second detection devices, respectively.

[0009] Regardless of whether it is adapted to a non-contact potentiometer or a contact potentiometer, the bottom of both the first and second sliding seats is formed with support feet that contact the FPC board.

[0010] Preferably, the housing includes an upper cover and a lower cover. The upper cover has flip-down buckles formed on opposite sides of its outer edge, and the lower cover has first fastening protrusions formed on opposite sides of its outer surface that engage with the flip-down buckles. The flip-down buckles are fastened to the first fastening protrusions.

[0011] The lower shell has abutting grooves formed at the four corners of its upper surface, and the base has abutting parts integrally formed on all four sides that abut against the abutting grooves.

[0012] The outer side of the lower shell and the side adjacent to the lower snap fastener are formed with a second snap-fit ​​protrusion. The opposite sides of the base are formed with upper snap fasteners that are snapped and connected to the second snap-fit ​​protrusion. The upper surface of the upper cover is provided with an opening for the rocker arm structure to swing.

[0013] Preferably, the rocker structure includes a rocker head, a main shaft, an upper rocker arm, a lower rocker arm, and a return spring;

[0014] The rocker head has a coaxially arranged inner cavity for the main shaft to be inserted into, and a spring positioning pin is coaxially arranged at the top of the inner cavity; the upper part of the main shaft has a coaxially arranged spring receiving groove, the return spring is correspondingly arranged in the spring receiving groove and its top extends out of the inner cavity of the shaft and abuts against the top of the inner cavity of the shaft, and the return spring is correspondingly inserted into the spring positioning pin.

[0015] The bottom of the spindle is integrally formed with a pressure plate; the base is formed with a pressure plate relief groove at the position corresponding to the pressure plate, and the pressure plate penetrates the FPC plate and is embedded in the pressure plate relief groove;

[0016] The upper rocker arm is orthogonally disposed above the lower rocker arm. Both the lower rocker arm and the upper rocker arm have shaft holes for the shaft rod to move. The shaft rod passes through the shaft holes of the upper rocker arm and the lower rocker arm in sequence, and the opposite sides of the shaft rod are rotatably connected to the lower rocker arm by axle pins.

[0017] One end of the upper rocker arm along its length is provided with a connecting shaft, and the other end of the upper rocker arm along its length is provided with a first U-shaped actuating part that cooperates with the second detection device; one end of the lower rocker arm along its length is provided with a pressing shaft, and the other end of the lower rocker arm along its length is provided with a second U-shaped actuating part that cooperates with the first detection device;

[0018] Regarding the adaptation to non-contact or contact potentiometers, both the first sliding seat and the second sliding seat have locking protrusions formed on the side of the corresponding U-shaped actuating part; the locking protrusions at the corresponding positions are inserted into the U-shaped grooves of the first U-shaped actuating part and the second U-shaped actuating part;

[0019] The connecting shaft is rotatably connected to the inner sidewall of the lower shell.

[0020] Preferably, a pressing support block is movably fitted below the position corresponding to the pressing shaft of the lower shell, and a recessed piece is provided on the upper surface of the FPC board that contacts the pressing support block.

[0021] Preferably, the outer side of the main shaft facing the pressure plate is provided with a plurality of guide protrusions arranged in a circumferential array, and the lower side wall of the shaft cavity of the rocker head is provided with a plurality of guide grooves for the guide protrusions to be inserted.

[0022] Preferably, an M-shaped elastic support is fitted between the inner wall of the lower shell and the second detection device, and a pressing part that cooperates with the M-shaped elastic support is formed on the upper side of the first U-shaped actuating part; the lower side of the pressing part is provided with an arc-shaped surface, and contact protrusions are formed on the opposite sides of the upper surface of the M-shaped elastic support at positions corresponding to the pressing part, and a gap is formed between the contact protrusions on the opposite sides.

[0023] Preferably, the rocker head is equipped with a dust cover.

[0024] The beneficial effects of this utility model are:

[0025] First, when adapting to a non-contact potentiometer, both the first and second detection devices include a first sliding base, a permanent magnet, and a Hall effect sensor. When adapting to a contact potentiometer, both the first and second detection devices include a second sliding base, a brush, and a carbon film resistor. This allows for perfect adaptation to the installation requirements of contact potentiometers and efficient matching of the magnetic field arrangement requirements of non-contact sensors without replacing other core components and molds of the potentiometer structure. This enables platform-based design of the product and significantly saves mold costs.

[0026] Secondly, a pressing support block is movably fitted below the position corresponding to the pressing shaft on the lower shell, and a recessed piece is provided on the upper surface of the FPC board to contact the pressing support block. When the pressing support block is pressed, the pressing support block and the recessed piece can directly contact each other to immediately produce a good pressing feel.

[0027] Third, the upper cover and lower shell are fastened to the first fastening protrusion by a downward snap fastener, and the base and lower shell are fastened to the upward snap fastener by a second fastening protrusion, which improves assembly efficiency while ensuring assembly stability.

[0028] Fourth, an M-shaped elastic support is fitted between the inner wall of the lower shell and the second detection device. The pressure plate penetrates the FPC plate and is embedded in the pressure plate clearance groove to ensure that the rocker structure can accurately and quickly achieve the return action, thereby ensuring the return accuracy.

[0029] Fifth, the rocker head is equipped with a dust cover, giving the structure good dust protection.

[0030] Sixth, the lower side of the pressing part is provided with an arc-shaped surface, and the upper surface of the M-shaped elastic support is provided with contact protrusions on both sides corresponding to the pressing part. A gap is formed between the contact protrusions on both sides. When pressing, the arc-shaped surface contacts the contact protrusions, reducing the contact area with the pressing part, thereby reducing wear and improving service life. Attached Figure Description

[0031] Figure 1 This is an exploded view of the present invention (adapted to a non-contact potentiometer).

[0032] Figure 2 A perspective view of the first and second detection devices (adapted to non-contact potentiometers).

[0033] Figure 3 This is an exploded view of the present invention (adapted to a contact potentiometer).

[0034] Figure 4 A perspective view of the first and second detection devices (adapted to contact potentiometers).

[0035] Figure 5 This is an exploded view of the rocker arm structure.

[0036] Figure 6 This is an exploded view of the casing.

[0037] Figure 7 This is a bottom view of the lower casing (for non-contact potentiometers).

[0038] Figure 8 This is a cross-sectional view of the present invention (adapted to a non-contact potentiometer).

[0039] Figure 9 This is a perspective view of this embodiment.

[0040] The attached figures are labeled as follows: dust cover 10, first sliding seat 11, rocker arm structure 12, upper cover 13, flip-down buckle 14, M-shaped elastic support 15, pressing support block 16, first detection device 17, second detection device 18, lower shell 19, abutment clearance groove 20, first fastening protrusion 21, FPC board 22, Hall effect sensor 23, pressing part 24, base 25, flip-up buckle 26, pressure plate clearance groove 27, recessed piece 28, rocker arm head 29, main shaft 31, upper rocker arm 33. 34. Lower rocker arm, 30. Reset spring, 32. Pressure plate, 35. Second U-shaped actuating part, 36. Pressing shaft, 37. First U-shaped actuating part, 38. Connecting shaft, 39. Shaft pin, 40. Support foot, 41. Permanent magnet, 43. Fitting groove, 44. Locking protrusion, 45. Carbon film resistor, 46. Spring positioning pin, 47. Second sliding seat, 48. Positioning pin, 49. Contact protrusion, 50. Brush, 51. Housing, 52. Second fastening protrusion, 54. Guide protrusion, 53. Guide groove, 55. Pressing part. Detailed Implementation

[0041] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0042] Reference Figure 1-9 As shown: A dual-purpose multi-directional rocker potentiometer structure includes a housing 51, a base 25, a rocker structure 12, a first detection device 17, a second detection device 18, and an FPC board 22. The FPC board 22 is installed at the bottom of the inner cavity of the base 25. The housing 51 covers the base 25 to form an assembly cavity. The first detection device 17 and the second detection device 18 are respectively arranged in the assembly cavity. The lower part of the rocker structure 12 is installed in the housing 51.

[0043] When adapting to a non-contact potentiometer, both the first detection device 17 and the second detection device 18 include a first sliding seat 11, a permanent magnet block 43, and a Hall effect sensor 23. A fitting groove 42 for receiving the permanent magnet block 43 is provided on one side of the lower surface of the first sliding seat 11. The permanent magnet block 43 is fitted and fixed in the fitting groove 42. The Hall effect sensor 23 is mounted on the FPC board 22 and its position is adapted to the permanent magnet block 43 of the first detection device 17 and the second detection device 18, respectively.

[0044] When the contact potentiometer is adapted, both the first detection device 17 and the second detection device 18 include a second sliding seat 47, a brush 50, and a carbon film resistor 45. A positioning pin 48 is provided in the center of the lower surface of the second sliding seat 47. The positioning pin 48 passes through the brush 50 and is interference-fitted with the positioning pin 48. The carbon film resistor 45 is correspondingly disposed on the FPC board 22 and its position is adapted to the brush 50 of the first detection device 17 and the second detection device 18, respectively.

[0045] This implementation method can perfectly adapt to the installation requirements of contact potentiometers and efficiently match the magnetic field arrangement requirements of non-contact sensors without replacing other core components and molds of the potentiometer structure, thereby realizing the platform design of the product and significantly saving mold costs.

[0046] Regardless of whether it is adapted to a non-contact potentiometer or a contact potentiometer, the bottom of the first sliding seat 11 and the second sliding seat 47 are formed with support feet 41 that contact the FPC board 22.

[0047] The housing 51 includes an upper cover 13 and a lower cover 19. The upper cover 13 has downward-facing buckles 14 formed on opposite sides of its outer edge. The lower cover 19 has first engaging protrusions 21 formed on opposite sides of its outer surface, which engage with the downward-facing buckles 14. The downward-facing buckles 14 and the first engaging protrusions 21 are fastened together. The lower cover 19 has abutment grooves 20 formed at its four corners on its upper surface. The base 25 has integrally formed pressing portions 24 on all four sides that abut against the abutment grooves 20. The lower cover 19 has second engaging protrusions 52 formed on its outer side adjacent to the downward-facing buckles 14. The base 25 has upward-facing buckles 26 formed on opposite sides that engage with the second engaging protrusions 52. The upper surface of the upper cover 13 has an opening for the rocker arm structure 12 to swing. In this embodiment, the upper cover and lower cover are fastened together with the first engaging protrusions via downward-facing buckles, and the base and lower cover are fastened together with the upward-facing buckles via the second engaging protrusions. This ensures assembly stability while improving assembly efficiency.

[0048] The rocker structure 12 includes a rocker head 29, a main shaft 31, an upper rocker arm 33, a lower rocker arm 34, and a return spring 30; the rocker head 29 is fitted with a dust cover 10, which gives the structure good dust protection.

[0049] The rocker head 29 has a coaxially arranged inner cavity for the main shaft 31 to be inserted into. A spring positioning pin 46 is coaxially arranged at the top of the inner cavity. A spring storage groove is coaxially opened at the upper part of the main shaft 31. A return spring 30 is correspondingly arranged in the spring storage groove and its top extends out of the inner cavity of the shaft and abuts against the top of the inner cavity of the shaft. The return spring 30 is correspondingly inserted into the spring positioning pin 46.

[0050] The bottom of the spindle 31 is integrally formed with a pressure plate 32; the base 25 is formed with a pressure plate relief groove 27 at the position corresponding to the pressure plate 32, and the pressure plate 32 penetrates the FPC plate 22 and is embedded in the pressure plate relief groove 27.

[0051] The upper rocker arm 33 is orthogonally positioned above the lower rocker arm 34. Both the lower rocker arm 34 and the upper rocker arm 33 have shaft holes for the shaft rod 40 to move. The shaft rod 40 passes through the shaft hole of the upper rocker arm 33 and the shaft hole of the lower rocker arm 34 in sequence, and the opposite sides of the shaft rod 40 are rotatably connected to the lower rocker arm 34 through the shaft pin 39.

[0052] One end of the upper rocker arm 33 along its length is provided with a connecting shaft 38, and the other end of the upper rocker arm 33 along its length is provided with a first U-shaped actuating part 37 that cooperates with the second detection device 18; one end of the lower rocker arm 34 along its length is provided with a pressing shaft 36, and the other end of the lower rocker arm 34 along its length is provided with a second U-shaped actuating part 35 that cooperates with the first detection device 17; the connecting shaft 38 is rotatably connected to the inner wall of the lower shell 19.

[0053] Regarding the adaptation to non-contact or contact potentiometers, both the first sliding seat 11 and the second sliding seat 47 have locking protrusions 44 formed on the side of the corresponding U-shaped actuating part; the locking protrusions 44 at the corresponding positions are inserted into the U-shaped grooves of the first U-shaped actuating part 37 and the second U-shaped actuating part 35.

[0054] A pressing support block 16 is movably fitted below the lower shell 19 at the position corresponding to the pressing shaft 36, and a recessed piece 28 is provided on the upper surface of the FPC board 22 to contact the pressing support block 16. When pressure is applied to the pressing support block, the pressing support block and the recessed piece can directly contact each other to immediately produce a good pressing feel.

[0055] The outer side of the main shaft 31 facing the pressure plate 32 is provided with a plurality of guide protrusions 54 arranged in a circumferential array, and the lower side wall of the shaft cavity of the rocker head 29 is provided with a plurality of guide grooves 53 for the guide protrusions 54 to be inserted. Through the cooperation of the guide protrusions 54 and the guide grooves 53, the shaft 40 can be stably reset along the main shaft 31.

[0056] An M-shaped elastic support 15 is fitted between the inner wall of the lower shell 19 and the second detection device 18. A pressing part 55, which mates with the M-shaped elastic support 15, is formed on the upper side of the first U-shaped actuating part 37. The lower side of the pressing part 55 has an arc-shaped surface. Contact protrusions 49 are formed on opposite sides of the upper surface of the M-shaped elastic support 15 at positions corresponding to the pressing part 55. A gap is formed between the contact protrusions 49 on opposite sides to ensure that the upper surface of the M-shaped elastic support 15 has good elastic cushioning force. By setting the M-shaped elastic support 15, when the pressing part 55 presses down on the M-shaped elastic support 15, it contacts the contact protrusions through the arc-shaped surface, reducing the contact area with the pressing part, thereby reducing wear and increasing service life.

[0057] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A dual-purpose multi-directional rocker potentiometer structure, comprising a housing (51), a base (25), a rocker structure (12), a first detection device (17), a second detection device (18), and an FPC board (22), wherein the FPC board (22) is installed at the bottom of the inner cavity of the base (25), the housing (51) covers the base (25) to form an assembly cavity, the first detection device (17) and the second detection device (18) are correspondingly disposed in the assembly cavity, and the lower part of the rocker structure (12) is installed inside the housing (51); characterized in that: When adapted to a non-contact potentiometer, both the first detection device (17) and the second detection device (18) include a first sliding seat (11), a permanent magnet block (43), and a Hall effect sensor (23). A fitting groove (42) for receiving the permanent magnet block (43) is provided on one side of the lower surface of the first sliding seat (11). The permanent magnet block (43) is fitted and fixed in the fitting groove (42). The Hall effect sensor (23) is installed on the FPC board (22) and its position is adapted to the permanent magnet block (43) of the first detection device (17) and the second detection device (18), respectively. When the contact potentiometer is adapted, both the first detection device (17) and the second detection device (18) include a second sliding seat (47), a brush (50), and a carbon film resistor (45). The lower surface of the second sliding seat (47) is provided with a positioning pin (48) protruding in the center. The positioning pin (48) passes through the brush (50) and is interference-fitted with the positioning pin (48). The carbon film resistor (45) is correspondingly disposed on the FPC board (22) and its position is adapted to the brush (50) of the first detection device (17) and the second detection device (18) respectively. Regardless of whether it is adapted to a non-contact potentiometer or a contact potentiometer, the bottom of the first sliding base (11) and the second sliding base (47) are formed with support feet (41) that contact the FPC board (22).

2. The dual-purpose multi-directional rocker potentiometer structure according to claim 1, characterized in that, The housing (51) includes an upper cover (13) and a lower cover (19). The upper cover (13) has flip-down buckles (14) formed on opposite sides of its outer edge. The lower cover (19) has first fastening protrusions (21) formed on opposite sides of its outer side to cooperate with the flip-down buckles (14). The flip-down buckles (14) are fastened to the first fastening protrusions (21). The lower shell (19) has abutting relief grooves (20) formed at the four corners of the upper surface, and the four sides of the base (25) are integrally formed with abutting parts (24) that abut against the abutting relief grooves (20). The outer side of the lower shell (19) and the side adjacent to the lower buckle (14) are formed with a second fastening protrusion (52). The opposite sides of the base (25) are formed with upper buckles (26) that are fastened and connected to the second fastening protrusion (52). The upper surface of the upper cover (13) is provided with an opening for the rocker structure (12) to swing.

3. The dual-purpose multi-directional rocker potentiometer structure according to claim 2, characterized in that, The rocker structure (12) includes a rocker head (29), a main shaft (31), an upper rocker arm (33), a lower rocker arm (34), and a return spring (30); The rocker head (29) has a coaxially arranged inner cavity for the main shaft (31) to be inserted into, and a spring positioning pin (46) is coaxially arranged at the top of the inner cavity; the upper part of the main shaft (31) has a spring storage groove, and the return spring (30) is correspondingly arranged in the spring storage groove and its top extends out of the inner cavity of the shaft and abuts against the top of the inner cavity of the shaft. The return spring (30) is correspondingly inserted into the spring positioning pin (46). The bottom of the spindle (31) is integrally formed with a pressure plate (32); the base (25) is formed with a pressure plate relief groove (27) at the position corresponding to the pressure plate (32), and the pressure plate (32) penetrates the FPC plate (22) and is embedded in the pressure plate relief groove (27); The upper rocker arm (33) is orthogonally disposed above the lower rocker arm (34). Both the lower rocker arm (34) and the upper rocker arm (33) are provided with shaft holes for the shaft rod (40) to move. The shaft rod (40) passes through the shaft holes of the upper rocker arm (33) and the lower rocker arm (34) in sequence. The opposite sides of the shaft rod (40) are rotatably connected to the lower rocker arm (34) through shaft pins (39). One end of the upper rocker arm (33) along its length is provided with a connecting shaft (38), and the other end of the upper rocker arm (33) along its length is provided with a first U-shaped actuating part (37) that cooperates with the second detection device (18); one end of the lower rocker arm (34) along its length is provided with a pressing shaft (36), and the other end of the lower rocker arm (34) along its length is provided with a second U-shaped actuating part (35) that cooperates with the first detection device (17); Regarding the adaptation to non-contact or contact potentiometers, both the first sliding seat (11) and the second sliding seat (47) have a locking protrusion (44) formed on the side of the corresponding U-shaped actuation part; the locking protrusion (44) at the corresponding position is inserted into the U-shaped groove of the first U-shaped actuation part (37) and the second U-shaped actuation part (35); The connecting shaft (38) is rotatably connected to the inner wall of the lower shell (19).

4. The dual-purpose multi-directional rocker potentiometer structure according to claim 3, characterized in that, A pressing support block (16) is movably fitted below the lower shell (19) at the position corresponding to the pressing shaft (36), and a recessed piece (28) is provided on the upper surface of the FPC board (22) to contact the pressing support block (16).

5. The dual-purpose multi-directional rocker potentiometer structure according to claim 4, characterized in that, The outer side of the main shaft (31) facing the pressure plate (32) is provided with a plurality of guide protrusions (54) arranged in a circumferential array, and the lower side wall of the shaft cavity of the rocker head (29) is provided with a plurality of guide grooves (53) for the guide protrusions (54) to be inserted.

6. The dual-purpose multi-directional rocker potentiometer structure according to claim 5, characterized in that, An M-shaped elastic support (15) is fitted between the inner wall of the lower shell (19) and the second detection device (18). A pressing part (55) that cooperates with the M-shaped elastic support (15) is formed on the upper side of the first U-shaped actuating part (37). An arc-shaped surface is provided on the lower side of the pressing part (55). Contact protrusions (49) are formed on the opposite sides of the upper surface of the M-shaped elastic support (15) at positions corresponding to the pressing part (55). A gap is formed between the contact protrusions (49) on the opposite sides.

7. The dual-purpose multi-directional rocker potentiometer structure according to claim 6, characterized in that, The rocker head (29) is fitted with a dust cover (10).

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