CN213481363U

CN213481363U - Novel non-contact encoder

Info

Publication number: CN213481363U
Application number: CN202021427677.0U
Authority: CN
Inventors: 舒斯龙
Original assignee: Dongguan Linjve Industry Investments Co ltd
Current assignee: Dongguan Linjiwei Technology Co ltd
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2021-06-18
Anticipated expiration: 2030-07-20

Abstract

The utility model relates to a novel non-contact encoder, including the axle sleeve, undulant dish, optical assembly, the mesochite, undulant dish sets up between axle sleeve and mesochite, it produces the location structure that the gear was felt to set up between undulant dish and the axle sleeve, optical assembly is including all being located undulant dish with the light emitting source of one side and accepting the source, undulant dish an organic whole is provided with reflection of light face and shading portion, the light emitting source emits light toward reflection of light face direction and with light reflection to accepting the source through reflection of light face, shading portion can block light entering and accept the source, through rotating undulant dish switching position in reflection of light face and shading portion in light emitting light path the place. The utility model discloses rational in infrastructure, novel in design, practicality are strong, through setting up optical assembly in same one side of reflection of light face, great simplification the structure, reduced production and assembly cost, wherein set up the reflector panel and the anti-dazzling screen integrated into one piece of reflection of light face and separate the setting with reflector panel and light screen on the wave-motion disk.

Description

Novel non-contact encoder

Technical Field

The utility model relates to an encoder technical field, in particular to novel non-contact encoder.

Background

Along with the continuous development of society, the iteration is updated fast to the electronic product, in the middle of present electronic product, need use the switch of various differences, wherein knob switch is owing to shift gears convenient operation, is used widely by people, need use body quill shaft encoder in some knob switches, chinese utility model patent like application number CN 201910591080.5 discloses a knob, including knob body, code wheel, circuit board and cell type photoelectric switch, be provided with first type interface and second type interface on the circuit board, first type interface and second type interface are used for connecting cell type photoelectric switch. The knob with the required number of gears can be obtained by selecting the number of the groove-shaped photoelectric switches and the number of channels and correspondingly setting the code of the code disc. This patent utilizes cell type photoelectric switch to realize potentiometre and encoder function, but cell type photoelectric switch is the photoelectric switch of direct injection formula, need be equipped with the code wheel that the structure is complicated, has increased production and assembly cost, and the space between cell type photoelectric switch and the code wheel is very easily euphotic simultaneously for cell type photoelectric switch produces indiscriminate sign indicating number easily, and stability remains to improve.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides a novel non-contact encoder.

In order to achieve the above purpose, the utility model provides a technical scheme does: the utility model provides a novel non-contact encoder, includes axle sleeve, ripples driving disk, optical assembly, mesochite, ripples driving disk sets up between axle sleeve and mesochite, set up the location structure that produces the gear and feel between ripples driving disk and the axle sleeve, optical assembly is including all being located the light emitting source and the source of accepting of undulant dish with one side, ripples driving disk an organic whole is provided with reflection of light face and shading portion, the light emitting source emits light toward reflection of light face direction and with light reflection to accepting the source through reflection of light face, shading portion can block light entering and accept the source, through rotating undulant dish switching position in the reflection of light face and shading portion in light emitting light path the place ahead.

In the technical scheme, the wave-driving disk is coated with the light reflecting plate, the surface of one exposed side of the light reflecting plate from the wave-driving disk is a light reflecting surface, and the plurality of shading parts are arranged on the wave-driving disk at intervals along the circumferential direction.

In the technical scheme, the LED lamp further comprises a bottom plate fixed on one side of the middle shell, a PCB board for mounting the optical assembly is arranged between the middle shell and the bottom plate, the middle shell is provided with a light emitting hole and a light receiving hole, and the light emitting source and the light receiving source are respectively positioned in the light emitting hole and the light receiving hole.

In the above technical solution, the light shielding portion is a light shielding column having a light shielding area not smaller than an area of the light receiving hole.

In order to achieve the above object, the utility model provides another kind of novel non-contact encoder is still provided, including axle sleeve, wave driving disk, optical assembly, mesochite, the wave driving disk sets up between axle sleeve and mesochite, set up the location structure that produces the gear and feel between wave driving disk and the axle sleeve, optical assembly is including all being located the light emitting source and the accepting source of wave driving disk with one side, light emitting source transmission light path the place ahead is provided with the reflector panel with the light reflex to accepting the source, be provided with the light screen that can block the light entering accepting source between reflector panel and the optical assembly, the light screen has the shading portion and the non-light tight portion of keeping away of shading, the light screen is connected with wave driving disk and switches the shading portion and the portion of keeping away that are located light emitting source transmission light.

In the technical scheme, the reflector is fixed between the shaft sleeve and the middle shell, the reflector is provided with a circular hole for the hollow shaft of the wave disc to pass through, the light screen is sleeved on the hollow shaft of the wave disc, and the surface of one side of the reflector facing the middle shell is a reflecting surface.

In the technical scheme, the light screen is provided with a through hole which is sleeved on the hollow shaft of the fluctuation disc, the through hole is provided with a clamping groove, and the hollow shaft of the fluctuation disc is provided with a boss which is clamped with the clamping groove.

In the above technical solution, the light shielding portion is a light shielding sheet, the plurality of light shielding sheets are circumferentially arranged on the light shielding plate at intervals, and a gap between two adjacent light shielding sheets forms a space-avoiding portion.

The utility model has the advantages of that, the utility model has the advantages of reasonable structure, novel design, the practicality is strong, through setting up optical assembly in the same one side of reflection surface, great simplification structure, production and assembly cost have been reduced, wherein set up the reflector panel and the shading post integrated into one piece of reflection surface on the fluctuation disk or set up reflector panel and light screen separately, make the light that the light source sent reflect to the accepting source through the reflection surface and form a return circuit, when the fluctuation disk rotates, the shading portion can cover the light-receiving hole and make the accepting source not accept the light and form a broken circuit, realize the coding function, simultaneously fluctuation disk and optical assembly seal between axle sleeve, mesochite, bottom plate, make optical assembly can not receive the interference of external light, guarantee the stability of code; the retainer ring is arranged in a clamping groove of the shaft core to prevent the shaft core from falling off; the spring and the steel ball are arranged in the mounting hole of the fluctuation disc to achieve the effect of fixing the spring and the steel ball, the spring increases the rotation torque of the shaft core, the steel ball is matched with the shaft sleeve positioning teeth to provide gear positioning hand feeling, and the spring and steel ball positioning structure is adopted to improve the rotation service life of a product; the PCB is provided with a switch circuit corresponding to the switch elastic sheet; the switch elastic sheet is arranged in a four-foot supporting shape so as to prolong the pressing life of the product; the switch elastic sheet is positioned through the groove of the middle shell.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment.

Fig. 2 is an exploded schematic view of the first embodiment.

Fig. 3 is an exploded view (another view direction of fig. 2) of the first embodiment.

Fig. 4 is a schematic view of the mounting structure of the optical module.

FIG. 5 is a schematic view of a wave plate according to an embodiment.

FIG. 6 is an exploded view of a wave plate according to an embodiment.

Fig. 7 is a schematic perspective view of the second embodiment.

Fig. 8 is an exploded schematic view of the second embodiment.

Fig. 9 is an exploded view (another view direction of fig. 8) of the second embodiment.

In the figure: 1. a base plate; 2. a PCB board; 21. a switching circuit; 22. welding the hole; 23. a terminal; 3. a middle shell; 30. a circular hole; 31. a light emitting hole; 32. a light receiving hole; 321. a first light receiving hole; 322. a second light receiving hole; 33. a groove; 4. a wave disk; 40. a clamping hole; 41. a light-reflecting surface; 42. a shading column; 43. mounting holes; 44. a spring; 45. steel balls; 46A and 46B, a reflector; 47. a visor; 471. a shading sheet; 472. an evacuation section; 473. a clamping groove; 48. a boss; 5. a shaft sleeve; 50. a mesopore; 51. positioning teeth; 6. a support; 61. riveting pins; 7. a shaft core; 71. a card slot; 72. a collar; 73. pressing the press; 74. a switch spring plate; 81. a positioning column; 82. positioning holes; 83. fixing a column; 84. a fixing hole; 9. an optical component; 91. a light emitting source; 92. a source is accepted.

Detailed Description

The embodiments of the present invention will be described with reference to the accompanying drawings.

In the first embodiment, the first step is,

as shown in fig. 1-6, a novel non-contact encoder includes a shaft sleeve 5, a wave disk 4, an optical assembly 9, a middle shell 3, a bottom plate 1, a shaft core 7, a pressing member 73, a collar 72, and a bracket 6, wherein the wave disk 4 is disposed between the shaft sleeve 5 and the middle shell 3, a positioning structure for generating gear hand feeling is disposed between the wave disk 4 and the shaft sleeve 5, the optical assembly 9 includes a light emitting source 91 and a receiving source 92 both disposed on the same side of the wave disk 4, the wave disk 4 is integrally provided with a reflective surface 41 and a light shielding portion, the light emitting source 91 emits light toward the reflective surface 41 and reflects the light to the receiving source 92 through the reflective surface 41, the light shielding portion can block the light from entering the receiving source 92, and the reflective surface 41 and the light shielding portion disposed in front of the light path of the light emitting.

The wave disc 4 is coated with a light reflecting plate 46A, the surface of one side of the light reflecting plate 46A exposed from the wave disc 4 is a light reflecting surface 41, and a plurality of shading parts are arranged on the wave disc 4 at intervals along the circumferential direction. The light shielding portion is a light shielding column 42 having a light shielding area not smaller than the light receiving hole 32. The reflector 46A is a metal reflector 46A, the light-emitting plate is annular, and a mirror surface capable of reflecting light is formed on one side surface of the reflector 46A; the edge of the light reflecting plate 46A is provided with a plurality of barbs, and the extending directions of two adjacent barbs are opposite, so that the light reflecting plate 46A can be stably coated on the wave disc 4.

The bottom plate 1 is fixed on one side of the middle shell 3, the PCB 2 for installing the optical assembly 9 is arranged between the middle shell 3 and the bottom plate 1, the middle shell 3 is provided with a light emitting hole 31 and a light receiving hole 32, and the light emitting source 91 and the light receiving source 92 are respectively positioned in the light emitting hole 31 and the light receiving hole 32.

The inner wall of the shaft sleeve 5 is provided with a positioning tooth 51, the wave disc 4 is provided with a mounting hole 43 along the radial direction, a spring 44 and a steel ball 45 are arranged in the mounting hole 43, and the steel ball 45 and the positioning tooth 51 cooperate to form a positioning structure under the action of the spring 44.

The bottom plate 1 is provided with a clamping groove 71 matched with the PCB 2, a fixing column 83 used for positioning the PCB 2 is arranged in the clamping groove 71, and the PCB 2 is provided with a fixing hole 84 clamped with the fixing column 83.

The lower end of the shaft core 7 sequentially penetrates through the middle hole 50 of the shaft sleeve 5, the clamping hole 40 of the fluctuation disk 4 and the round hole 30 of the middle shell 3 and is connected with a pressing piece 73 coaxially arranged below the shaft core 7, the lower part of the shaft core 7 is clamped with the clamping hole 40 of the fluctuation disk 4 to drive the fluctuation disk 4 to rotate, and the clamping ring 72 is positioned between the shaft sleeve 5 and the fluctuation disk 4 and clamped in the clamping groove 71 of the shaft core 7 to limit the axial freedom degree of the shaft core 7.

The PCB 2 is provided with a switch circuit 21, the switch circuit 21 is connected with a switch elastic sheet 74, the middle shell 3 is provided with a groove 33 matched with the shape of the switch elastic sheet 74, the switch elastic sheet 74 is embedded in the groove 33, and the shaft core 7 moving along the axial direction in a straight line acts on the switch elastic sheet 74 through a pressing piece 73.

The PCB 2 is provided with a plurality of soldering holes 22, and terminals 23 connected to an external circuit are inserted and fixed in the soldering holes 22, and the terminals 23 extend from the bottom plate 1 and are exposed.

The support 6 is arranged on one side of the shaft sleeve 5, the support 6 is provided with a riveting foot 61 riveted and fixed with the bottom plate 1, and matched positioning holes 82 and positioning columns 81 are arranged among the shaft sleeve 5, the middle shell 3 and the bottom plate 1 and are riveted and fixed through the support 6.

The PCB 2 is provided with a circuit connected with the optical components 9, and after 2

luminous sources

91 and 2 receiving sources 92 of the two groups of optical components 9 are welded on the PCB 2, the luminous sources 91 and the receiving sources 92 can work by electrifying the circuit of the PCB 2.

Six shading columns 42 are arranged on the undulation disc 4 at intervals along the circumferential direction, and the shading columns 42 are arranged on the undulation disc 4 in a protruding mode. The light source 91 irradiates light onto the reflecting surface 41 of the fluctuation disk 4 through the light emitting hole 31, the reflecting surface 41 of the fluctuation disk 4 reflects the light into the receiving source 92 in the light receiving hole 32, and the receiving source 92 receives the light to form a lower loop and output a low level signal through the PCB 2; when the wave plate 4 rotates, the shading column 42 with a larger area can shade the light receiving hole 32 to block the light reflected to the light receiving hole 32 by the reflecting surface, so that the receiving source 92 cannot receive the light, an open circuit is formed, and a high-level signal is output through the PCB 2.

In the second embodiment, the first embodiment of the method,

as shown in fig. 7-9, a novel non-contact encoder comprises a shaft sleeve 5, a wave disk 4, an optical assembly 9, a middle shell 3 and a bottom plate 1, the shaft core 7, press son 73, rand 72, support 6, undulant dish 4 sets up between axle sleeve 5 and mesochite 3, set up the location structure that produces the gear and feel between undulant dish 4 and the axle sleeve 5, optical assembly 9 is including all being located the light emitting source 91 and the accepting source 92 of undulant dish 4 same side, light emitting source 91 sends light path place ahead and is provided with the reflector panel 46B that reflects light to accepting source 92, be provided with between reflector panel 46B and the optical assembly 9 and block light screen 47 that light gets into accepting source 92, light screen 47 has shading's portion and the non-light tight portion of keeping out light 472, light screen 47 is connected with undulant dish 4 and switches the shading portion and the non-light portion 472 that are located light emitting source 91 and send light path place ahead through rotating undulant dish 4. Compared with the first embodiment, the reflecting plate 46B is fixedly arranged between the middle shell 3 and the shaft sleeve 5, so that the reflecting plate 46B and the light shielding plate 47 are arranged separately, and the encoding process is the same as that of the first embodiment.

The reflector 46B is fixed between the shaft sleeve 5 and the middle shell 3, the reflector 46B is provided with a circular hole 30 for the hollow shaft of the wave disc 4 to pass through, the light screen 47 is sleeved on the hollow shaft of the wave disc 4, and the surface of one side of the reflector 46B facing the middle shell 3 is a reflecting surface 41.

The light screen 47 is provided with a through hole which is sleeved on the hollow shaft of the wave disc 4, the through hole is provided with a clamping groove 33, and the hollow shaft of the wave disc 4 is provided with a boss 48 which is clamped with the clamping groove 33.

The light shielding portions are light shielding sheets 471, the light shielding sheets 471 are arranged on the light shielding plate 47 at intervals along the circumferential direction, and a gap between two adjacent light shielding sheets 471 forms a clearance portion.

luminous sources

The six light shielding sheets 471 are circumferentially arranged on the light shielding plate 47 at intervals, the light emitting source 91 irradiates light to the reflecting surface 41 through the light emitting hole 31, the reflecting surface 41 reflects the light to the receiving source 92 in the light receiving hole 32, and the receiving source 92 receives the light to form a lower loop and output a low level signal through the PCB 2; when the wave plate 4 rotates, the light shielding plate 47 is driven to rotate, so that the light shielding sheet 471 with a large area can shield the light receiving hole 32 to block the light reflected to the light receiving hole 32 by the reflection surface, so that the receiving source 92 cannot receive the light, an open circuit is formed, and a high level signal is output through the PCB 2.

According to the principle of the incremental encoder, the two groups of optical elements 9 of the two embodiments have a phase difference of 1/4 cycles, the two groups of optical elements 9 are used to determine the rotation direction, the relative positions of the two light-receiving holes 32 and the light-shielding columns 42 of the wobble plate 4 are staggered, in the same shift position, the first light-receiving hole 321 corresponding to the first group of optical element 9 is located at the center of one of the light-shielding columns 42, the second light-receiving hole 322 corresponding to the second group of optical element 9 is located at the position between the center and the edge of the other light-shielding column 42, when the wobble plate 4 is rotated clockwise, the first group of optical element 9 generates a high/low level signal earlier than the second group of optical element 9, and when the wobble plate 4 is rotated counterclockwise, the second group of optical element 9 generates a high/low level signal earlier than the first group of optical element 9.

The utility model has the advantages of reasonable structure, novel design, therefore, the clothes hanger is strong in practicability, through setting up optical assembly 9 in the same one side of reflector surface 41, the structure has been greatly simplified, production and assembly cost have been reduced, wherein set up reflector plate 46A and the shading post integrated into one piece of reflector surface 41 on undulant dish 4 or with reflector plate 46B and light screen 47 separately set up, make the light that light source 91 sent reflect through reflector surface 41 and form a return circuit in accepting source 92, when undulant dish 4 rotates, shading portion can shelter from and connect unthreaded hole 32 and make and accept source 92 and accept light and form a broken circuit, realize the coding function, undulant dish 4 and optical assembly 9 are sealed at axle sleeve 5 simultaneously, mesochite 3, bottom plate 1, make optical assembly 9 can not receive the interference of external light, guarantee the stability of coding; the retainer ring 72 is arranged in the clamping groove 71 of the shaft core 7 to prevent the shaft core 7 from falling off; the spring 44 and the steel ball 45 are arranged in the mounting hole 43 of the fluctuation disc 4 to achieve the effect of fixing the spring 44 and the steel ball 45, the spring 44 increases the rotation moment of the shaft core 7, the steel ball 45 is matched with the positioning teeth 51 of the shaft sleeve 5 to provide gear positioning hand feeling, and the positioning structure of the spring 44 and the steel ball 45 is adopted to prolong the rotation life of the product; the PCB 2 is provided with a switch circuit 21 corresponding to the switch elastic sheet 74; the switch elastic sheet 74 is arranged in a four-leg supporting shape so as to prolong the pressing life of the product; the switch elastic sheet 74 is positioned by the groove 33 of the middle shell 3.

The above is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications to the above embodiments are all within the scope of the present invention.

Claims

1. The utility model provides a novel non-contact encoder, its characterized in that, includes axle sleeve, wave driving disk, optical assembly, mesochite, the wave driving disk sets up between axle sleeve and mesochite, set up the location structure that produces the gear and feel between wave driving disk and the axle sleeve, optical assembly is including all being located the light emitting source and the accepting source of wave driving disk with one side, light emitting source transmission light path the place ahead is provided with the reflector panel to accepting the source with the light reflection, be provided with between reflector panel and the optical assembly and block the light screen that the light got into and accept the source, the light screen has the shading portion and the non-light tight portion of keeping away of shading, the light screen is connected with wave driving disk and switches the shading portion and the portion of keeping away that is located light emitting source transmission light.

2. The novel non-contact encoder as claimed in claim 1, wherein the reflector is fixed between the sleeve and the middle casing, the reflector defines a circular hole for passing the hollow shaft of the wobble plate, the light shielding plate is disposed on the hollow shaft of the wobble plate, and a surface of the reflector facing the middle casing is a light reflecting surface.

3. The novel non-contact encoder as claimed in claim 2, wherein the light shielding plate has a through hole formed therein, the through hole having a locking groove, and the hollow shaft has a boss for locking with the locking groove.

4. The novel non-contact encoder as claimed in claim 3, wherein the light shielding portion is a plurality of light shielding plates, the plurality of light shielding plates are circumferentially spaced on the light shielding plate, and the gap between two adjacent light shielding plates forms a space-avoiding portion.

5. The novel non-contact encoder according to claim 4, further comprising a bottom plate fixed on one side of the middle shell, wherein a PCB board for mounting the optical assembly is disposed between the middle shell and the bottom plate, the middle shell is provided with a light emitting hole and a light receiving hole, and the light emitting source and the light receiving source are respectively positioned in the light emitting hole and the light receiving hole.