A multi-gear dual-shaft encoder

Abstract

The utility model relates to encoder technical field especially is a kind of multi-gear double-shaft encoder, it includes inner shaft core, outer shaft core, outer shaft sleeve, first output mechanism, second output mechanism, third output mechanism and fourth output mechanism, first output mechanism is set between outer shaft sleeve and second output mechanism, outer shaft core rotation is set in outer shaft sleeve and is used to control first output mechanism output signal, along the central axis of outer shaft core, outer shaft core is provided with first through-hole, inner shaft core rotation is set in first through-hole, the lower end of inner shaft core is protruded from first through-hole outer shaft core after sequentially connecting in second output mechanism, third output mechanism and fourth output mechanism, and respectively used to control the output signal of second output mechanism, third output mechanism and fourth output mechanism. The utility model realizes multi-gear control, and it is favorable to reduce equipment design cost.

Description

Technical Field

[0001] This utility model relates to the field of encoder technology, and in particular to a multi-position dual-axis encoder. Background Technology

[0002] Encoders and potentiometers are both control devices used in equipment, but they operate on different principles: encoders output a range signal and can rotate 360°, while potentiometers output a smooth resistance signal and cannot rotate 360°. Many current devices incorporate both encoders and potentiometers, using them to achieve different control functions. Therefore, controllers integrating encoders and potentiometers have emerged on the market. Current dual-axis encoders integrate the functions of encoders and potentiometers into one unit, and the two operate independently, thus reducing the number of controllers. For example, a dual-axis encoder is disclosed in patent application number 202420853545.6, which was applied for and granted by the applicant of this application in 2024. However, in actual product applications, due to the existence of only the first and second output mechanisms, the number of controllable gears is limited. Ultimately, an additional encoder is needed to realize multi-gear signal control and setting of the equipment. The addition of an extra encoder increases the production cost of the equipment. Therefore, based on the dual-axis encoder disclosed in patent application number 202420853545.6, the applicant has further designed the multi-gear dual-axis encoder of this application. Summary of the Invention

[0003] This invention addresses the problems of existing technologies by providing a multi-position dual-axis encoder with an ingenious design. Compared to existing technologies, it further adds a third and fourth output mechanism. With the cooperation of the outer and inner shaft cores, the first, second, third, and fourth output mechanisms can each output a position signal. The first, second, third, and fourth output mechanisms control different structures of the device to operate independently, improving the versatility and flexibility of applications, achieving multi-position control, and reducing equipment design costs.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This utility model provides a multi-position dual-axis encoder, which includes an inner shaft core, an outer shaft core, an outer shaft sleeve, a first output mechanism, a second output mechanism, a third output mechanism, and a fourth output mechanism. The outer shaft sleeve, the first output mechanism, the second output mechanism, the third output mechanism, and the fourth output mechanism are connected in sequence. The first output mechanism is disposed between the outer shaft sleeve and the second output mechanism. The outer shaft core is rotatably disposed within the outer shaft sleeve and is used to control the output signal of the first output mechanism. A first through hole is provided through the outer shaft core along its central axis. The inner shaft core is rotatably disposed within the first through hole. The lower end of the inner shaft core protrudes from the first through hole from the outer shaft core and is connected in sequence to the second output mechanism, the third output mechanism, and the fourth output mechanism, and is used to control the output signals of the second output mechanism, the third output mechanism, and the fourth output mechanism, respectively.

[0006] The first output mechanism includes a first brush, a first housing, and a first output pin disposed in the first housing. The first brush is movably disposed within the first housing. The first brush is mounted on the outer side wall of the outer shaft and rotates with the outer shaft. The first brush is used to control the output signal of the first output pin.

[0007] The second output mechanism includes a second brush, a second housing, and a second output pin disposed in the second housing. The second brush is movably disposed within the second housing. The second brush is mounted on one end of the inner shaft that protrudes from the outer shaft and rotates with the inner shaft. The second brush is used to control the output signal of the second output pin.

[0008] The third output mechanism includes a third brush, a third housing, and a third output pin disposed in the third housing. The third brush is movably disposed within the third housing. The third brush is mounted on one end of the inner shaft that protrudes from the outer shaft and rotates with the inner shaft. The third brush is used to control the output signal of the third output pin.

[0009] The fourth output mechanism includes a fourth brush, a fourth housing, and a fourth output pin disposed in the fourth housing. The fourth brush is movably disposed within the fourth housing. The fourth brush is mounted on one end of the inner shaft that protrudes from the outer shaft and rotates with the inner shaft. The fourth brush is used to control the output signal of the fourth output pin.

[0010] The beneficial effects of this utility model are:

[0011] This utility model features a novel structure and ingenious design. Compared to existing technologies, it further adds a third and fourth output mechanism. With the cooperation of the outer and inner shaft cores, the first, second, third, and fourth output mechanisms can output gear signals respectively. The first, second, third, and fourth output mechanisms control different structures of the equipment to work independently, without interfering with each other during operation. This improves the diversity and flexibility of applications, enables multi-gear control, and helps reduce equipment design costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a multi-position dual-axis encoder according to the present invention.

[0013] Figure 2 This is an exploded view of the structure of a multi-position dual-axis encoder according to this utility model.

[0014] exist Figures 1 to 2 The reference numerals in the figures include:

[0015] 1. Inner shaft core; 2. Outer shaft core; 3. Outer bushing; 4. First output mechanism; 5. Second output mechanism; 6. Third output mechanism; 7. Fourth output mechanism; 8. First brush; 9. First housing; 10. First output pin; 11. Second brush; 12. Second housing; 13. Second output pin; 14. Third brush; 15. Third housing; 16. Third output pin; 17. Fourth brush; 18. Fourth housing; 19. Fourth output pin. Detailed Implementation

[0016] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention. The present invention will be described in detail below with reference to the accompanying drawings.

[0017] A multi-position dual-axis encoder, such as Figure 1-2As shown, it includes an inner shaft core 1, an outer shaft core 2, an outer bushing 3, a first output mechanism 4, a second output mechanism 5, a third output mechanism 6, and a fourth output mechanism 7. The outer bushing 3, the first output mechanism 4, the second output mechanism 5, the third output mechanism 6, and the fourth output mechanism 7 are connected in sequence. The first output mechanism 4 is disposed between the outer bushing 3 and the second output mechanism 5. The outer shaft core 2 is rotatably disposed within the outer bushing 3 and is used to control the output signal of the first output mechanism 4. Along the central axis of the outer shaft core 2, the outer shaft core 2 is provided with a first through hole. The inner shaft core 1 is rotatably disposed within the first through hole. The lower end of the inner shaft core 1 protrudes from the first through hole from the outer shaft core 2 and is connected in sequence to the second output mechanism 5, the third output mechanism 6, and the fourth output mechanism 7, and is used to control the output signals of the second output mechanism 5, the third output mechanism 6, and the fourth output mechanism 7, respectively.

[0018] Specifically, this utility model has a novel structure and ingenious design. Compared with the prior art, it further adds a third output mechanism 6 and a fourth output mechanism 7. With the cooperation of the outer shaft core 2 and the inner shaft core 1, the first output mechanism 4, the second output mechanism 5, the third output mechanism 6 and the fourth output mechanism 7 can output gear signals respectively. The first output mechanism 4, the second output mechanism 5, the third output mechanism 6 and the fourth output mechanism 7 control different structures of the equipment to work, and do not affect each other during operation, thereby improving the diversity and flexibility of application, realizing multi-gear control, and helping to reduce equipment design costs.

[0019] In this embodiment of the application, the first output mechanism 4 includes a first brush 8, a first housing 9, and a first output pin 10 disposed in the first housing 9. The first brush 8 is movably disposed in the first housing 9. The first brush 8 is assembled to the outer side wall of the outer shaft core 2 and rotates with the outer shaft core 2. The first brush 8 is used to control the output signal of the first output pin 10.

[0020] The second output mechanism 5 includes a second brush 11, a second housing 12, and a second output pin 13 disposed in the second housing 12. The second brush 11 is movably disposed in the second housing 12. The second brush 11 is assembled to one end of the inner shaft 1 that protrudes from the outer shaft 2 and rotates with the inner shaft 1. The second brush 11 is used to control the output signal of the second output pin 13.

[0021] The third output mechanism 6 includes a third brush 14, a third housing 15, and a third output pin 16 disposed in the third housing 15. The third brush 14 is movably disposed within the third housing 15. The third brush 14 is assembled to one end of the inner shaft 1 that protrudes from the outer shaft 2 and rotates with the inner shaft 1. The third brush 14 is used to control the output signal of the third output pin 16.

[0022] The fourth output mechanism 7 includes a fourth brush 17, a fourth housing 18, and a fourth output pin 19 disposed in the fourth housing 18. The fourth brush 17 is movably disposed within the fourth housing 18. The fourth brush 17 is mounted on one end of the inner shaft 1 that protrudes from the outer shaft 2 and rotates with the inner shaft 1. The fourth brush 17 is used to control the output signal of the fourth output pin 19.

[0023] Specifically, in this embodiment, the four output mechanisms adopt a linear series layout, with the first to fourth output mechanisms 7 arranged sequentially from the outer bushing 3 end. This optimizes the signal transmission path. The outer shaft core 2 directly drives the first output mechanism 4, and the inner shaft core 1 sequentially drives the subsequent second output mechanism 5, third output mechanism 6, and fourth output mechanism 7, minimizing the signal path and reducing signal delay and distortion. Furthermore, each output mechanism in this embodiment is independently encapsulated in its own housing, facilitating maintenance and replacement. A failure of a single module does not affect the overall function, achieving a modular design. In addition, adjacent output mechanisms in this embodiment can be thermally isolated, with a 0.2mm thermal insulation gap between adjacent housings to prevent temperature accumulation caused by brush contact heating, thereby improving product reliability and stability.

[0024] In this embodiment, the first output mechanism 4 is directly driven by the outer shaft core 2, and its core is a contact signal generation system composed of the first brush 8 and the first housing 9. When the outer shaft core 2 rotates, the first brush 8, fixed to its outer side wall, moves accordingly and forms a dynamic connection with the preset contact track inside the first housing 9. The second output mechanism 5 is driven by the part of the inner shaft core 1 protruding from the outer shaft core 2, and its core is the cooperation between the second brush 11 and the second housing 12. The rotation of the inner shaft core 1 drives the second brush 11 to slide inside the second housing 12, contacting the preset resistor track or digital encoding pattern inside the second housing 12. The third output mechanism 6 continues to be driven by the inner shaft core 1, and the third brush 14 can contact the third... The housing 15 has a pre-set Gray code encoding track to directly output the absolute position signal. The second brush 11 and the third brush 14 can be set on the same boom. The fourth housing 18 can simultaneously set two independent tracks, one is a high-precision conductive plastic track, and the other is a metal etched digital encoding track. This dual-track design, in conjunction with the fourth brush 17, can realize the synchronous output of high-precision analog signals and absolute position signals. Of course, the second output mechanism 5, the third output mechanism 6, and the fourth output mechanism 7 in this embodiment can also be set with the same type of encoding pattern or resistor track to achieve the same type of model control. They can be designed according to actual needs, and no special limitation is made here.

[0025] In this embodiment, the first brush 8, the second brush 11, the third brush 14, and the fourth brush 17 can all be made of silver-nickel alloy material (e.g., AgNi15), with a contact resistance of <10mΩ, and maintain a constant contact pressure (e.g., 50±5gf) through elastic deformation; the interiors of the first housing 9, the second housing 12, the third housing 15, and the fourth housing 18 are respectively etched with precision conductive patterns, and the brushes contact different circuit nodes at different positions, outputting corresponding gear signals through the output pins.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A multi-position dual-axis encoder, characterized in that: The device includes an inner shaft core, an outer shaft core, an outer bushing, a first output mechanism, a second output mechanism, a third output mechanism, and a fourth output mechanism. The outer bushing, the first output mechanism, the second output mechanism, the third output mechanism, and the fourth output mechanism are connected in sequence. The first output mechanism is disposed between the outer bushing and the second output mechanism. The outer shaft core is rotatably disposed within the outer bushing and is used to control the output signal of the first output mechanism. A first through hole is provided through the outer shaft core along its central axis. The inner shaft core is rotatably disposed within the first through hole. The lower end of the inner shaft core protrudes from the first through hole and is connected in sequence to the second output mechanism, the third output mechanism, and the fourth output mechanism, and is used to control the output signals of the second output mechanism, the third output mechanism, and the fourth output mechanism, respectively.

2. The multi-position dual-axis encoder according to claim 1, characterized in that: The first output mechanism includes a first brush, a first housing, and a first output pin disposed in the first housing. The first brush is movably disposed within the first housing. The first brush is mounted on the outer side wall of the outer shaft core and rotates with the outer shaft core. The first brush is used to control the output signal of the first output pin.

3. The multi-position dual-axis encoder according to claim 1, characterized in that: The second output mechanism includes a second brush, a second housing, and a second output pin disposed in the second housing. The second brush is movably disposed within the second housing. The second brush is mounted on one end of the inner shaft that protrudes from the outer shaft and rotates with the inner shaft. The second brush is used to control the output signal of the second output pin.

4. A multi-position dual-axis encoder according to claim 1, characterized in that: The third output mechanism includes a third brush, a third housing, and a third output pin disposed in the third housing. The third brush is movably disposed within the third housing. The third brush is mounted on one end of the inner shaft that protrudes from the outer shaft and rotates with the inner shaft. The third brush is used to control the output signal of the third output pin.

5. A multi-position dual-axis encoder according to claim 1, characterized in that: The fourth output mechanism includes a fourth brush, a fourth housing, and a fourth output pin disposed in the fourth housing. The fourth brush is movably disposed within the fourth housing. The fourth brush is mounted on one end of the inner shaft that protrudes from the outer shaft and rotates with the inner shaft. The fourth brush is used to control the output signal of the fourth output pin.

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