Double-shaft optical encoder with pressing function
By designing a dual-axis optical encoder with pressing function, the upper and lower grating encoded signals and switch signals are independently controlled by the inner and outer shafts, the problems of congestion and misoperation of the single-axis encoder are solved, and the convenience of multi-parameter adjustment is achieved.
Patent Information
- Application Number
- CN202311270437.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-28
- Publication Date
- 2025-03-28
AI Technical Summary
In the prior art, the single-axis optical encoder is congested on the control panel, which easily leads to erroneous operation and cannot complete the logical correlation adjustment of multiple parameters in one action.
A two-axis optical encoder with pressing function is designed, including a shaft unit, an upper grating encoding unit, a lower grating encoding unit and a switching unit, and the upper and lower grating encoding signals and switching signals are independently controlled through the inner and outer rotating shafts.
The dual-axis optical encoder outputs upper and lower grating encoded signals and switch signals, which is equivalent to two single-axis encoders, which reduces the number of devices on the control panel, solves the problems of layout congestion and misoperation, and supports the completion of multi-parameter adjustment in one action.
Smart Images
Figure CN119714374A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to an optical encoder, in particular to a dual-axis optical encoder with a pressing function. Background Art
[0002] An optical encoder is a sensor that converts the mechanical geometric displacement on the output shaft into pulses or digital quantities through photoelectric conversion. It is currently a widely used sensor. In the civilian field, it is mainly used in computers, radios, global positioning systems, televisions, game systems and other equipment. In the military field, it is widely used in aircraft, ships, weapons, dual-axis optical encoders, individual equipment and other systems.
[0003] Commonly used optical encoders with push functions are mostly single-axis encoders. However, in order to control multiple parameters on a control panel, multiple encoders are often required. In some cases, the layout of the control panel is relatively crowded. Using a single-axis encoder will result in too small a spacing between encoders, which will cause problems such as misoperation. Using a dual-axis encoder can save half the number, greatly optimizing the layout space of the control panel. In addition, in some cases, there is often a certain logical connection between the two parameters that need to be adjusted, such as the relationship between "one octave" and "ten octaves" is the relationship between fine adjustment and coarse adjustment. Using a dual-axis encoder allows the operator to complete the desired parameter adjustment action in one action, without having to complete it in two actions. Summary of the invention
[0004] The purpose of the present invention is to solve the problems in the prior art and to provide a novel dual-axis optical encoder with a pressing function.
[0005] In order to achieve the above object, the present invention provides a technical solution: a dual-axis optical encoder with a pressing function, comprising: a rotating shaft unit, an upper grating encoding unit, a lower grating encoding unit and a switch unit. The rotating shaft unit controls the upper grating encoding unit, the lower grating encoding unit and the switch unit to output an upper grating encoding signal, a lower grating encoding signal and a switch signal.
[0006] As a preferred solution of a dual-axis optical encoder with a pressing function, the shaft unit has an inner shaft and an outer shaft surrounding the outer side of the inner shaft, the inner shaft controls the lower grating encoding unit and the switch unit to output a lower grating encoding signal and a switch signal, and the outer shaft controls the upper grating encoding unit to output an upper grating encoding signal; wherein the inner shaft is independent of the outer shaft, and the rotations of the two do not interfere with each other.
[0007] As a preferred solution of the dual-axis optical encoder with a pressing function, the upper grating encoding unit comprises an upper grating seat, an upper transmitting plate, an upper receiving plate, an upper grating turntable and an upper spring sheet, one of the upper transmitting plate and the upper receiving plate covers the upper part of the upper grating seat, and the other covers the lower part of the upper grating seat, the upper grating seat, the upper transmitting plate and the upper receiving plate together form an upper grating accommodating chamber, the upper grating accommodating chamber is separated into an upper grating accommodating main chamber and an upper grating accommodating sub-chamber by an upper partition plate inside the upper grating accommodating main chamber, and the upper grating accommodating main chamber is provided with a plurality of upper grating accommodating sub-chambers. The upper grating turntable is arranged, the lower end of the outer layer rotating shaft enters downward into the upper grating accommodating main cavity, the lower end of the outer layer rotating shaft and the upper grating turntable have a common axis and the two are fixedly connected, the outer peripheral surface of the upper grating turntable has alternately arranged crests and troughs, the upper grating accommodating sub-cavity contains the upper spring sheet, the upper partition has a partition hole, the elastic protrusion of the upper spring sheet passes through the partition hole of the upper partition into the upper grating accommodating main cavity and is embedded in one of the troughs of the upper grating turntable.
[0008] As a preferred solution for a dual-axis optical encoder with a pressing function, the upper transmitting plate has an upper transmitting tube, and the upper receiving plate has an upper receiving tube relative to the upper transmitting tube. The upper grating encoding signal is formed by utilizing the upper transmitting tube of the upper transmitting plate, the upper receiving tube of the upper receiving plate and the grating hole of the upper grating turntable.
[0009] As a preferred solution of a dual-axis optical encoder with a pressing function, the lower grating encoding unit is below the upper grating encoding unit, and the lower grating encoding unit has a lower grating seat, a lower transmitting plate, a lower receiving plate, a lower grating turntable and a lower spring sheet, and one of the lower transmitting plate and the lower receiving plate covers above the lower grating seat, while the other covers below the lower grating seat. The lower grating seat, the lower transmitting plate and the lower receiving plate together form a lower grating accommodating chamber, and the lower grating accommodating chamber is separated into a lower grating accommodating main chamber and a lower grating accommodating sub-chamber by a lower partition inside the chamber, the lower grating accommodating main chamber contains the lower grating turntable, the lower end portion of the inner rotating shaft downwardly enters into the lower grating accommodating main chamber, the lower end portion of the inner rotating shaft and the lower grating turntable have a common axis and the two are fixedly connected, the outer peripheral surface of the lower grating turntable has alternately arranged crests and troughs, the lower grating accommodating sub-chamber contains the lower spring sheet, the lower partition has a partition hole, the elastic protrusion of the lower spring sheet passes through the partition hole of the lower partition into the lower grating accommodating main chamber and is embedded in one of the troughs of the lower grating turntable.
[0010] As a preferred solution for a dual-axis optical encoder with a pressing function, the lower transmitting plate has a lower transmitting tube, and the lower receiving plate has a lower receiving tube relative to the lower transmitting tube. The lower grating encoding signal is formed by utilizing the lower transmitting tube of the lower transmitting plate, the lower receiving tube of the lower receiving plate and the grating hole of the lower grating turntable.
[0011] As a preferred solution of a dual-axis optical encoder with a pressing function, the switch unit is below the lower grating encoding unit, the switch unit has a switch plate, the lower grating turntable has a turntable lower convex shaft, and the turntable lower convex shaft is above the push switch of the switch plate; the inner layer shaft is pressed down, and the inner layer shaft presses the push switch of the switch plate through the turntable lower convex shaft of the lower grating turntable to form the switch signal.
[0012] As a preferred solution of a dual-axis optical encoder with a pressing function, the press switch includes: a switch static contact, a switch moving contact and a key spring, the switch static contact and the switch moving contact are formed on the switch plate, a portion of the key spring abuts against the switch static contact, and a portion of the key spring selectively abuts against the switch moving contact, and when the key spring is equivalent to the switch moving contact, the switch signal is formed.
[0013] As a preferred solution of the dual-axis optical encoder with a pressing function, a fixing ring is provided above the key spring, the fixing ring is used to position the key spring, and the ring hole of the fixing ring is for the lower convex shaft of the turntable to pass through.
[0014] As a preferred solution of the dual-axis optical encoder with a pressing function, the outer rotating shaft and / or the inner rotating shaft has an anti-slip structure.
[0015] Compared with the prior art, the beneficial effects of the present invention are at least that: the dual-axis optical encoder can output upper grating coding signals, lower grating coding signals and switch signals, which is equivalent to two single-axis encoders with pressing functions, reducing the number of components on the control panel and solving the problem of crowded component layout and easy misoperation of the control panel. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the structure of the present invention.
[0017] Figure 2 It is a schematic diagram of the structure of the grating encoding unit of the present invention.
[0018] Figure 3 It is a schematic diagram of the structure of the grating encoding unit of the present invention.
[0019] Figure 4 It is a structural schematic diagram of the switch unit of the present invention. Implementation
[0020] The present invention is further described in detail below by means of specific embodiments in combination with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0021] See also Figure 1 , the figure shows a dual-axis optical encoder with a pressing function. The dual-axis optical encoder includes: a rotating shaft unit 1, an upper grating encoding unit 2, a lower grating encoding unit 3, a switch unit 4, etc. The rotating shaft unit 1 controls the upper grating encoding unit 2, the lower grating encoding unit 3 and the switch unit 4, and outputs an upper grating encoding signal, a lower grating encoding signal and a switch signal, etc.
[0022] The rotating shaft unit 1 comprises an inner rotating shaft 11 and an outer rotating shaft 12 surrounding the inner rotating shaft 11. The inner rotating shaft 11 and the outer rotating shaft 12 have a common axis. The inner rotating shaft 11 is independent of the outer rotating shaft 12, and the rotation of the two does not interfere with each other.
[0023] See also Figure 2The upper grating encoding unit 2 has an upper grating seat 21, an upper transmitting plate 22, an upper receiving plate 23, an upper grating turntable 24 and an upper spring sheet 25. One of the upper transmitting plate 22 and the upper receiving plate 23 covers the upper part of the upper grating seat 21, while the other covers the lower part of the upper grating seat 21. The upper grating seat 21, the upper transmitting plate 22 and the upper receiving plate 23 together form an upper grating accommodating chamber. The upper grating accommodating chamber is separated into an upper grating accommodating main chamber and an upper grating accommodating sub-chamber by an upper partition plate inside the chamber. The upper grating accommodating main chamber is equipped with the upper grating turntable 24. The upper grating turntable 24 is rotatable. The lower end of the outer rotating shaft 12 enters downward into the upper grating accommodating main chamber. The lower end of the outer rotating shaft 12 and the upper grating turntable 24 have a common axis and are fixedly connected. The upper grating turntable 24 moves synchronously with the outer rotating shaft 12. The outer peripheral surface of the upper grating turntable 24 has crests and troughs arranged alternately. The upper spring sheet 25 is built into the upper grating accommodating sub-cavity. The upper spring sheet 25 is fixed. The upper partition has a partition hole. The elastic protrusion of the upper spring sheet 25 passes through the partition hole of the upper partition into the upper grating accommodating main cavity and is embedded in one of the troughs of the upper grating turntable 24. The outer rotating shaft 12 is rotated, and the outer rotating shaft 12 drives the upper grating turntable 24 to move, and the elastic protrusion of the upper spring sheet 25 can sequentially enter the subsequent troughs, thereby providing operational feedback to the outer rotating shaft 12. The upper transmitting plate 22 has an upper transmitting tube. The upper receiving plate 23 has an upper receiving tube relative to the upper transmitting tube. The upper grating coding signal is formed by using the upper transmitting tube of the upper transmitting plate 22, the upper receiving tube of the upper receiving plate 23 and the grating holes of the upper grating rotating disk 24. The upper receiving plate 23 can output the upper grating coding signal through the upper socket electrically connected thereto.
[0024] See also Figure 3, the lower grating encoding unit 3 is below the upper grating encoding unit 2. The lower grating encoding unit 3 has a lower grating seat 31, a lower transmitting plate 32, a lower receiving plate 33, a lower grating rotating disk 34 and a lower spring sheet 35. One of the lower transmitting plate 32 and the lower receiving plate 33 covers the upper part of the lower grating seat 31, and the other covers the lower part of the lower grating seat 31. The lower grating seat 31, the lower transmitting plate 32 and the lower receiving plate 33 together form a lower grating accommodating chamber. The lower grating accommodating chamber is separated into a lower grating accommodating main cavity and a lower grating accommodating sub-cavity by a lower partition plate inside the lower grating accommodating chamber. The lower grating accommodating main cavity is equipped with the lower grating rotating disk 34. The lower grating rotating disk 34 is rotatable. The lower end of the inner layer rotating shaft 11 enters downward into the lower grating accommodating main cavity. The lower end of the inner layer rotating shaft 11 and the lower grating rotating disk 34 have a common axis and are fixedly connected. The lower grating turntable 34 moves synchronously with the inner rotating shaft 11. The outer peripheral surface of the lower grating turntable 34 has crests and troughs arranged alternately. The lower spring sheet 35 is built into the lower grating accommodating sub-cavity. The lower spring sheet 35 is fixed. The lower partition has a partition hole. The elastic protrusion of the lower spring sheet 35 passes through the partition hole of the lower partition into the lower grating accommodating main cavity and is embedded in one of the troughs of the lower grating turntable 34. By rotating the inner rotating shaft 11, the outer rotating shaft 12 drives the lower grating turntable 34 to move, and the elastic protrusion of the lower spring sheet 35 can sequentially enter the subsequent troughs, thereby providing operational feedback to the inner rotating shaft 11. The lower transmitting plate 32 has a lower transmitting tube. The lower receiving plate 33 has a lower receiving tube relative to the lower transmitting tube. The lower grating coding signal is formed by using the lower transmitting tube of the lower transmitting plate 32, the lower receiving tube of the lower receiving plate 33 and the grating holes of the lower grating rotating disk 34. The lower receiving plate 33 can output the lower grating coding signal through the lower socket electrically connected thereto.
[0025] See also Figure 4 , the switch unit 4 is below the lower grating encoding unit 3. The switch unit 4 has a switch plate 40. The lower grating rotary disk 34 has a rotary disk lower convex shaft 340. The rotary disk lower convex shaft 340 is above the push switch 400 of the switch plate 40. The inner layer rotary shaft 11 is pressed downward, and the inner layer rotary shaft 11 presses the push switch 400 of the switch plate 40 through the rotary disk lower convex shaft 340 of the lower grating rotary disk 34 to form the switch signal. The switch plate 40 can output the switch signal through the lower receiving plate 33 electrically connected thereto.
[0026] Preferably, the push switch 400 includes: a switch static contact 401, a switch moving contact 402 and a key spring 403. The switch static contact 401 and the switch moving contact 402 are formed in the switch plate 40. A portion of the key spring 403 always abuts against the switch static contact 401, and a portion of the key spring 403 selectively abuts against the switch moving contact 402. When the key spring 403 conducts the switch static contact 401 and the switch moving contact 402, the switch signal is formed. Furthermore, a fixing ring 404 is provided above the key spring 403. The fixing ring 404 is used to position the key spring 403. The ring hole of the fixing ring 404 allows the lower convex shaft 340 of the turntable to pass downward.
[0027] Preferably, the inner rotating shaft 11 has an anti-escape structure. The anti-escape structure includes: a limit stopper and a limit blocked portion below the limit stopper. The limit blocked portion is fixed to the inner rotating shaft 11. When the limit blocked portion abuts against the limit stopper, the inner rotating shaft 11 can no longer move upward to prevent the inner rotating shaft 11 from escaping upward. The limit stopper is, for example, a shell partition between the upper grating encoding unit 2 and the lower grating encoding unit 3. The limit blocked portion is, for example, a retaining ring 110 embedded in the groove of the inner rotating shaft 11.
[0028] Preferably, the outer layer rotating shaft 12 has an anti-escape structure. The anti-escape structure includes: a limit stopper and a limit stopper below the limit stopper. The limit stopper is fixed to the outer layer rotating shaft 12. When the limit stopper abuts against the limit stopper, the outer layer rotating shaft 12 can no longer move upward to prevent the outer layer rotating shaft 12 from escaping upward. The limit stopper is, for example, a top wall of the shell above the upper grating encoding unit 2. The limit stopper is, for example, a shoulder 120 formed on the outer layer rotating shaft 12.
[0029] The above only expresses the implementation mode of the present invention, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.
Claims
1. A dual-axis optical encoder with a pressing function, characterized in that: include: A shaft unit, an upper grating encoding unit, a lower grating encoding unit and a switch unit, wherein the shaft unit controls the upper grating encoding unit, the lower grating encoding unit and the switch unit to output an upper grating encoding signal, a lower grating encoding signal and a switch signal.
2. The dual-axis optical encoder with a pressing function according to claim 1, characterized in that: The rotating shaft unit comprises an inner rotating shaft and an outer rotating shaft surrounding the outer side of the inner rotating shaft, the inner rotating shaft controls the lower grating encoding unit and the switch unit to output the lower grating encoding signal and the switch signal, and the outer rotating shaft controls the upper grating encoding unit to output the upper grating encoding signal; wherein, the inner rotating shaft is independent of the outer rotating shaft, and the rotation of the two does not interfere with each other.
3. The dual-axis optical encoder with a pressing function according to claim 2, characterized in that: The upper grating encoding unit comprises an upper grating seat, an upper transmitting plate, an upper receiving plate, an upper grating rotating disk and an upper spring sheet, wherein one of the upper transmitting plate and the upper receiving plate covers above the upper grating seat, and the other covers below the upper grating seat, and the upper grating seat, the upper transmitting plate and the upper receiving plate together form an upper grating accommodating chamber, and the upper grating accommodating chamber is separated into an upper grating accommodating main chamber and an upper grating accommodating sub-chamber by an upper partition plate inside the upper grating accommodating main chamber, and the upper grating rotating disk is built in the upper grating accommodating main chamber, The lower end of the outer rotating shaft downwardly enters into the upper grating accommodating main cavity, the lower end of the outer rotating shaft and the upper grating rotating disk have a common axis and the two are fixedly connected, the outer peripheral surface of the upper grating rotating disk has alternately arranged crests and troughs, the upper grating accommodating sub-cavity contains the upper spring sheet, the upper partition has a partition hole, the elastic protrusion of the upper spring sheet passes through the partition hole of the upper partition plate into the upper grating accommodating main cavity and is embedded in one of the troughs of the upper grating rotating disk.
4. The dual-axis optical encoder with a pressing function according to claim 3, characterized in that: The upper transmitting plate has an upper transmitting tube, and the upper receiving plate has an upper receiving tube relative to the upper transmitting tube. The upper grating coding signal is formed by utilizing the upper transmitting tube of the upper transmitting plate, the upper receiving tube of the upper receiving plate and the grating hole of the upper grating turntable.
5. The dual-axis optical encoder with a pressing function according to claim 3 or 4, characterized in that: The lower grating encoding unit is below the upper grating encoding unit, and the lower grating encoding unit has a lower grating seat, a lower transmitting plate, a lower receiving plate, a lower grating turntable and a lower spring sheet. One of the lower transmitting plate and the lower receiving plate covers above the lower grating seat, and the other covers below the lower grating seat. The lower grating seat, the lower transmitting plate and the lower receiving plate together form a lower grating accommodating chamber, and the lower grating accommodating chamber is separated into a lower grating accommodating main chamber and a lower grating accommodating sub-chamber by a lower partition inside the chamber, the lower grating accommodating main chamber contains the lower grating turntable, the lower end portion of the inner rotating shaft downwardly enters into the lower grating accommodating main chamber, the lower end portion of the inner rotating shaft and the lower grating turntable have a common axis and the two are fixedly connected, the outer peripheral surface of the lower grating turntable has alternately arranged crests and troughs, the lower grating accommodating sub-chamber contains the lower spring sheet, the lower partition has a partition hole, the elastic protrusion of the lower spring sheet passes through the partition hole of the lower partition into the lower grating accommodating main chamber and is embedded in one of the troughs of the lower grating turntable.
6. The dual-axis optical encoder with a pressing function according to claim 5, characterized in that: The lower transmitting plate has a lower transmitting tube, and the lower receiving plate has a lower receiving tube relative to the lower transmitting tube. The lower grating encoding signal is formed by utilizing the lower transmitting tube of the lower transmitting plate, the lower receiving tube of the lower receiving plate and the grating hole of the lower grating turntable.
7. The dual-axis optical encoder with a pressing function according to claim 5 or 6, characterized in that: The switch unit is below the lower grating encoding unit, the switch unit has a switch plate, the lower grating turntable has a turntable lower convex shaft, and the turntable lower convex shaft is above the push switch of the switch plate; The inner rotating shaft is pressed downward, and the inner rotating shaft presses the push switch of the switch plate through the lower convex shaft of the lower grating rotating disk to form the switch signal.
8. The dual-axis optical encoder with a pressing function according to claim 7, characterized in that: The push switch includes: a switch static contact, a switch moving contact and a key spring, the switch static contact and the switch moving contact are formed on the switch plate, a portion of the key spring abuts against the switch static contact, and a portion of the key spring selectively abuts against the switch moving contact, and when the key spring is equivalent to the switch moving contact, the switch signal is formed.
9. The dual-axis optical encoder with a pressing function according to claim 8, characterized in that: A fixing ring is arranged above the key spring sheet, and the fixing ring is used to position the key spring sheet, and the ring hole of the fixing ring is for the lower convex shaft of the rotating disk to pass through.
10. The dual-axis optical encoder with a pressing function according to claim 2, characterized in that: The outer layer rotating shaft and / or the inner layer rotating shaft has an anti-falling-out structure.