CN111289235B - Key cap convenient to press and detect and detection system for detecting key cap - Google Patents
Key cap convenient to press and detect and detection system for detecting key cap Download PDFInfo
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- CN111289235B CN111289235B CN202010232245.2A CN202010232245A CN111289235B CN 111289235 B CN111289235 B CN 111289235B CN 202010232245 A CN202010232245 A CN 202010232245A CN 111289235 B CN111289235 B CN 111289235B
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The invention discloses a keycap convenient to press and detect and a detection system for detecting the keycap, and relates to the technical field of special detection equipment. This key cap that conveniently presses detection, including the automatic re-setting that is used for imbedding the supporting body healthy, one end is located on the supporting body, the reset spring of the automatic re-setting key body is supported to the other end, and the pot head of keeping away from the supporting body on the automatic re-setting key body is equipped with the key cap, and a circular region on the terminal surface that the supporting body was kept away from to the key cap is sunken to the key cap inwards to form a circular identification district, the bottom surface in circular identification district is main discernment face, and the centre of a circle that main discernment face corresponds falls on the center pin that the automatic re-setting key body corresponds. The scheme can automatically detect whether the reset spring on the keyboard is neglected to be installed.
Description
Technical Field
The invention relates to the technical field of special detection equipment, in particular to a keycap convenient to press and detect and a detection system for detecting the keycap.
Background
The keyboard is a commonly used control tool, and is commonly used as an operation terminal of an electronic device and an electronic system. As shown in fig. 1, the keyboard generally comprises a supporting body 1, an automatic returning body 11 inserted on the supporting body 1, and a return spring 12 disposed on the supporting body 1 for supporting the automatic returning body 11.
An integrated circuit board is usually disposed in the carrier 1, and an automatic reset key body 11 is correspondingly disposed on each control node or control switch of the control circuit board. The automatic reset key body 11 slides on the corresponding jack along the vertical direction, and when the automatic reset key body 11 moves towards the direction of inserting the carrier 1, the automatic reset key body 11 triggers the corresponding control node or control switch to send different instructions to the control system. After the instruction is sent, the spring support automatic reset key body 11 moves upwards and resets.
However, such keyboards are usually produced in a production process in a pipeline automation manner, and the produced finished keyboards need to be detected. Since the return spring 12 functions to be elastically restored and whether the return spring 12 is mounted or not, it cannot be directly determined by the appearance. The detection is therefore mainly directed to the omission of the return spring 12.
Therefore, a detection device is needed for detecting whether the return spring 12 of the keyboard has a missing installation phenomenon.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provides a keycap convenient to press and detect, which can automatically detect whether a reset spring on a keyboard is neglected to be installed.
In order to solve the technical problems, the invention provides a key cap convenient for press detection, which comprises an automatic reset body embedded into a bearing body, and a reset spring, wherein one end of the reset spring is arranged on the bearing body, the other end of the reset spring supports the automatic reset key body, one end of the automatic reset key body, which is far away from the bearing body, is sleeved with the key cap, an annular area on the end surface of the key cap, which is far away from the bearing body, is sunken in the key cap, and an annular identification area is formed, the bottom surface of the annular identification area is a main identification surface, and the circle center corresponding to the main identification surface falls on the central shaft corresponding to the automatic reset key body.
The technical effects are as follows: through increasing distinguishable key cap, through the main discernment face of reflection of light and the reflection of light of low light correction cambered surface form the light sense image, utilize the light sense image to fix a position to the testing process who makes, the manipulator can press the detection to the position at each key cap place.
The technical scheme of the invention is further defined as follows: the side wall of the main identification surface, which is far away from the circle center, is chamfered to form a weak light correction cambered surface, and the side wall of the other side, which is close to the circle center, is a vertical surface.
Another object of the present invention is to provide a detection system for detecting the key cap of the above scheme, which comprises,
the base plate is used for installing and fixing a bearing body to be detected;
the lighting plate is arranged above the substrate in parallel, spans across the substrate, is distributed with a plurality of illuminating ports and lighting ports towards one side of the substrate, and is controlled by the driving part to slide back and forth along the length direction of the substrate;
the sensing module consists of a plurality of light-sensitive sensors arranged in the lighting opening and is used for receiving the light signals reflected by the annular identification area and converting the light signals into electric signals;
the image conversion module receives the electric signal sent by the induction module and converts the electric signal into a light sensing image;
the comparison module is used for establishing a coordinate system on the plane where the substrate is located, comparing and superposing the light sensing images with the coordinate system, and generating coordinate information of each keycap;
the pressing contact is controlled by the positioning part to move to the position recorded by the coordinate information, is just positioned above the keycap and is pressed down once along the vertical direction, a pressure sensor is arranged at the end part for contacting the keycap, and whether the reset spring is installed in the automatic reset key body is judged according to the change condition of the received pressure signal;
the detection chamber is a closed space with an opening at one end and is used for arranging the substrate, the daylighting panel, the driving part, the pressing contact and the positioning part, the opening is used for sliding out or inserting the substrate, and the opening is closed through the openable door.
The invention is further provided with a plurality of positioning holes arranged on the substrate, a plurality of positioning rods are selectively inserted into the positioning holes, the positioning rods surround a space for limiting the bearing body, and the substrate is controlled by the cylinder to slide out of or into the detection chamber.
The invention is further arranged that the illuminating opening is a groove which is sunken towards the interior of the daylighting panel, the light source is arranged at the bottom of the groove, and the wall of the groove forms a limit baffle wall for blocking the scattering of the light source.
The invention is further arranged that the lighting port protrudes out of the lighting plate, a plurality of light sensation sensors are arranged in the lighting port, and the light sensation sensors form a lighting surface protruding out of the lighting plate and forming an arc shape.
The invention is further provided that the positioning part comprises a longitudinal base station and a positioning seat connected on the longitudinal base station in a sliding manner, the longitudinal base station is controlled to be close to or far away from the supporting cylinder, and the supporting cylinder is arranged on the inner wall of the detection chamber.
The invention is further arranged in such a way that a longitudinal slide rail is arranged on the longitudinal base station, a transverse base station is connected on the longitudinal slide rail in a sliding way, a transverse slide rail is arranged on the transverse base station, the transverse slide rail is vertical to the longitudinal slide rail, and the positioning seat is connected on the transverse slide rail in a sliding way.
The invention is further provided that the positioning seat is provided with a guide channel for the sliding of the press contact, a primary positioning cylinder for controlling the press contact to slide along the guide channel in the vertical direction, and a transmission mechanism for connecting the primary positioning cylinder and the press contact.
A circle center positioning method for the detection system,
collecting a light sensing image, wherein the light sensing image is formed by reflected light of a main identification surface and a low-light correction cambered surface, and when the daylighting panel translates, the reflection angle of the low-light correction cambered surface is wider than that of the main identification surface, so that a plurality of elliptical light rings can be generated in the movement process of the daylighting panel, the elliptical light rings can be mutually superposed, a main identification light ring with the maximum brightness is formed by a reflection ring formed by reflection of the main identification surface, boundary points at two ends in the length direction of the elliptical light formed by the low-light correction cambered surface are low-light boundary points, two points with the maximum brightness formed by superposition of the main identification light ring and the elliptical light rings are high-light boundary points, and the intersection point of the connecting line of the high-light boundary points and the connecting line of the low-light boundary points is the position of the circle center;
and determining the coordinate of the circle center in a coordinate image of the substrate corresponding to the circle center position, driving the pressing contact to move right above a coordinate point, namely right above the keycap, through the positioning part, and then performing pressing detection.
The invention has the beneficial effects that:
(1) the outer surface of the keycap is a frosted surface, so that the light intensity reflected to the lighting port under the illumination condition is far less than that reflected by the dim light correction cambered surface;
(2) the surface of the main identification surface is covered with a reflective film, the reflective surface of the reflective film faces the outside of the groove, and the light intensity reflected by the main identification surface is higher than that reflected by the weak light correction cambered surface;
(3) the surface of the weak light correction cambered surface is polished smoothly, so that reflected light is formed after the light emitted by the irradiation port is received, and a corresponding image is formed after the reflected light is received by the lighting port.
Drawings
FIG. 1 is a diagram illustrating a structure of an automatic reset key body according to the background art;
FIG. 2 is a schematic diagram showing a key cap structure according to the present invention;
FIG. 3 is a schematic diagram of a leak detection apparatus of the present invention for detecting whether a spring is missing;
fig. 4 is a schematic view showing a movement structure of the lighting panel;
FIG. 5 is an enlarged view of the light panel structure shown at I in FIG. 4;
FIG. 6 is a schematic view showing the structure of the positioning part;
FIG. 7 is a schematic diagram illustrating the operation of the detection system;
FIG. 8 is a schematic diagram of the principle of light-sensitive image acquisition.
Wherein: 1. a carrier; 11. an automatic reset key body; 12. a return spring; 2. a keycap; 21. an annular identification area; 22. a primary identification surface; 221. a main identification halo; 222. strong light boundary points; 23. correcting the arc surface by weak light; 231. a central correction zone; 232. a weak light boundary point; 24. a vertical plane; 3. a detection chamber; 31. a substrate; 311. positioning holes; 312. positioning a rod; 32. a daylighting panel; 321. an irradiation port; 322. a light collecting port; 323. a slide rail; 324. a servo motor; 33. a positioning part; 331. a longitudinal abutment; 332. a longitudinal slide rail; 333. a transverse abutment; 334. a transverse slide rail; 335. positioning seats; 336. A primary positioning cylinder; 337. a secondary positioning cylinder; 338. pressing the contact; 339. and (4) a guide channel.
Detailed Description
In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Example 1:
the utility model provides a key cap 2 that convenient pressing detected, is good for physically including the automatic re-setting that is used for embedding supporting body 1, one end is located on the supporting body 1, the reset spring 12 of the automatic re-setting key body 11 is supported to the other end, the pot head of keeping away from supporting body 1 on the automatic re-setting key body 11 is equipped with key cap 2, key cap 2 keeps away from an annular region on the terminal surface of supporting body 1 and caves in to key cap 2 to form an annular discernment district 21, the bottom surface of annular discernment district 21 is main discernment face 22, the centre of a circle that main discernment face 22 corresponds falls on the center pin that automatic re-setting key body 11 corresponds.
The technical effects are as follows: through increasing distinguishable key cap 2, form the light sense image through the reflection of light main identification face 22 and the low light correction cambered surface 23 of reflection of light, utilize the light sense image to fix a position to the testing process that makes, the manipulator can press the detection to the position at each key cap 2 place.
The technical scheme of the invention is further defined as follows: the side wall of the main identification surface 22 far away from the center of the circle is chamfered to form a weak light correction arc surface 23, and the side wall of the other side close to the center of the circle is a vertical surface 24.
Example 2:
a detection system for detecting the keycap 2 comprises,
the base plate 31 is used for installing and fixing the carrier 1 to be detected;
the lighting panel 32 is arranged above the substrate 31 in parallel, spans the substrate 31, is provided with a plurality of irradiation ports 321 and lighting ports facing one side of the substrate 31, and is controlled by the driving part to slide back and forth along the length direction of the substrate 31;
the sensing module consists of a plurality of light-sensitive sensors arranged in the lighting opening and is used for receiving the light signals reflected by the annular identification area 21 and converting the light signals into electric signals;
the image conversion module receives the electric signal sent by the induction module and converts the electric signal into a light sensing image;
the comparison module is used for establishing a coordinate system on the plane where the substrate 31 is located, comparing and superposing the light sensing images with the coordinate system, and generating coordinate information of each keycap 2;
the press contact 338 is controlled by the positioning part 33 to move to the position recorded by the coordinate information, is just above the keycap 2, is pressed down once along the vertical direction, is provided with a pressure sensor at the end part for contacting the keycap 2, and judges whether the automatic reset key body 11 is internally provided with the reset spring 12 according to the change condition of the received pressure signal;
the detection chamber 3 is a closed space having an opening at one end, and is used for placing the substrate 31, the plane skylight 32, the driving unit, the press contact 338, and the positioning unit 33, the opening is used for sliding out or inserting the substrate 31, and the opening is closed by an openable door.
The base plate 31 is provided with a plurality of positioning holes 311, a plurality of positioning rods 312 are selectively inserted into the positioning holes 311, the positioning rods 312 enclose a space for limiting the bearing body 1, and the base plate 31 is controlled by a cylinder to slide out or into the detection chamber 3.
The illuminating opening 321 is a concave groove which is concave towards the lighting board 32, the light source is arranged at the bottom of the groove, and the wall of the groove forms a limit barrier wall for blocking the scattering of the light source.
The lighting port protrudes outward from the lighting plate 32, and a plurality of light sensors are arranged in the lighting port and form a lighting surface protruding outward from the lighting plate 32 to form an arc shape.
The positioning part 33 includes a longitudinal base 331 and a positioning seat 335 slidably connected to the longitudinal base 331, and the longitudinal base 331 is controlled by a support cylinder disposed on the inner wall of the detection chamber 3 to approach or separate from the support cylinder.
The longitudinal base 331 is provided with a longitudinal slide rail 332323, the longitudinal slide rail 332323 is connected with a transverse base 333 in a sliding manner, the transverse base 333 is provided with a transverse slide rail 334323, the transverse slide rail 334323 is perpendicular to the longitudinal slide rail 332323, and the positioning seat 335 is connected with a transverse slide rail 334323 in a sliding manner.
The positioning seat 335 is provided with a guide channel 339 for the sliding of the press contact 338, a primary positioning cylinder 336 for controlling the sliding of the press contact 338 along the guide channel 339 in the vertical direction, and a transmission mechanism for connecting the primary positioning cylinder 336 and the press contact 338.
Example 3:
a circle center positioning method for the detection system,
collecting a light sensing image, wherein the light sensing image is formed by the reflected light of the main identification surface 22 and the low-light correction cambered surface 23, and because the light reflection angle of the low-light correction cambered surface 23 is wider than that of the main identification surface 22 when the lighting plate 32 translates, a plurality of elliptical light rings are generated in the moving process of the lighting plate 32, the elliptical light rings are mutually overlapped, a light reflection ring formed by the light reflection of the main identification surface 22 forms a main identification light ring 221 with the maximum brightness, the boundary points at two ends in the length direction of the elliptical light formed by the low-light correction cambered surface 23 are low-light boundary points 232, the two points on the main identification light ring 221 and the elliptical light rings which are overlapped to form the high-brightness boundary high-light points 222, and the intersection point of the connecting line of the high-light boundary points 222 and the connecting line of the low-light boundary points 232 is the position of the circle center;
the coordinate of the circle center is determined in the coordinate image of the substrate 31 corresponding to the circle center position, the positioning part 33 drives the pressing contact 338 to move to the position right above the coordinate point, namely, the key cap 2, and then the pressing detection is performed.
The outer surface of the keycap 2 is a frosted surface, so that the light intensity reflected to the lighting port under the illumination condition is far less than that reflected by the dim light correction cambered surface 23; the surface of the main identification surface 22 is covered with a reflective film, the reflective surface of the reflective film faces the outside of the groove, and the light intensity reflected by the main identification surface 22 is higher than that reflected by the weak light correction cambered surface 23; the surface of the weak light correction arc surface 23 is polished smooth, so that reflected light is formed after receiving the light emitted from the irradiation port 321, and a corresponding image is formed after the reflected light is received by the lighting port.
In addition to the above embodiments, the present invention may have other embodiments; all technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (9)
1. The utility model provides a key cap that conveniently presses detection, locates including the automatic re-setting key body (11), the one end that are used for imbedding supporting body (1) on supporting body (1), the other end supports reset spring (12) of the automatic re-setting key body (11), its characterized in that: a keycap (2) is sleeved on one end, far away from the bearing body (11), of the automatic reset key body (11), an annular area, far away from the bearing body (11), on the end face of the keycap (2) is recessed towards the keycap (2) to form an annular identification area (21), the bottom surface of the annular identification area (21) is a main identification surface (22), and the circle center corresponding to the main identification surface (22) falls on the central axis corresponding to the automatic reset key body (11);
the side wall of the main identification surface (22) far away from the circle center is chamfered to form a weak light correction arc surface, and the side wall of the other side close to the circle center is a vertical surface (24);
the reflected light of the main identification surface (22) and the low-light correction cambered surface (23) form a main identification light ring, boundary points at two ends of an oval light length direction formed by the low-light correction cambered surface (23) are low-light boundary points (232), two points with the highest brightness formed by superposing the main identification light ring (221) and the oval light ring are high-light boundary points (222), and the intersection point of the connecting line of the high-light boundary points (222) and the connecting line of the low-light boundary points is the circle center position.
2. A detection system for detecting the key cap of claim 1, wherein: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
a base plate (31) for mounting and fixing the carrier (1) to be detected;
the lighting plate (32) is arranged above the substrate (31) in parallel, spans the substrate (31), is provided with a plurality of irradiation ports (321) and lighting ports (322) towards one side of the substrate (31), and is controlled by the driving part to slide in a reciprocating manner along the length direction of the substrate (31);
the sensing module consists of a plurality of light-sensitive sensors arranged in the daylight opening (322) and is used for receiving the light signals reflected by the annular identification area (21) and converting the light signals into electric signals;
the image conversion module receives the electric signal sent by the induction module and converts the electric signal into a light sensation image;
the comparison module is used for establishing a coordinate system on the plane where the substrate (31) is located, and comparing and superposing the light sensing images with the coordinate system to generate coordinate information of each keycap;
the pressing contact (338) is controlled by the positioning part (33) to move to the position recorded by the coordinate information, is just positioned above the keycap (2), is pressed down once along the vertical direction, is provided with a pressure sensor at the end part for contacting the keycap, and judges whether the automatic reset key body (11) is internally provided with a reset spring (12) or not according to the change condition of the received pressure signal;
the detection chamber (3) is a closed space with an opening at one end and is used for placing the substrate (31), the daylighting panel (32), the driving part, the pressing contact (338) and the positioning part (33), the opening is used for sliding out or inserting the substrate (31), and the opening is closed through an openable door.
3. The detection system of claim 2, wherein: the substrate (31) is provided with a plurality of positioning holes (311), a plurality of positioning rods (312) are selectively inserted into the positioning holes (311), the positioning rods (312) enclose a space for limiting the bearing body (1), and the substrate (31) is controlled by a cylinder to slide out of or into the detection chamber (3).
4. The detection system of claim 3, wherein: the illuminating opening (321) is a groove which is sunken towards the lighting plate (32), the light source is arranged at the bottom of the groove, and a limiting blocking wall for blocking the scattering of the light source is formed on the groove wall of the groove.
5. The detection system of claim 4, wherein: the lighting port (322) protrudes out of the lighting plate (32), a plurality of light sensors are arranged in the lighting port (322), and the light sensors form an arc-shaped lighting surface protruding out of the lighting plate (32).
6. The detection system of claim 5, wherein: the positioning part (33) comprises a longitudinal base platform (331) and a positioning seat (335) connected to the longitudinal base platform (331) in a sliding mode, the longitudinal base platform (331) is controlled by a supporting cylinder, and the supporting cylinder is arranged on the inner wall of the detection chamber (3).
7. The detection system of claim 6, wherein: be equipped with vertical slide rail (332) on vertical base station (331), sliding connection has horizontal base station (333) on vertical slide rail (332), be equipped with horizontal slide rail (334) on horizontal base station (333), horizontal slide rail (334) perpendicular to vertical slide rail (332), positioning seat (335) sliding connection be in on horizontal slide rail (334).
8. The detection system of claim 7, wherein: the positioning seat (335) is provided with a guide channel (339) for the sliding of the pressing contact (338), a first-stage positioning cylinder (336) for controlling the sliding of the pressing contact (338) along the guide channel (349) in the vertical direction, and a transmission mechanism for connecting the first-stage positioning cylinder (336) and the pressing contact (338).
9. A method for locating the center of a circle of a detection system according to any one of claims 2 to 8,
collecting light sensing images, wherein the light sensing images are formed by reflected light of a main identification surface (22) and a weak light correction cambered surface (23), and because the reflection angle of the weak light correction cambered surface is wider than that of the main identification surface when a lighting panel (32) translates, a plurality of elliptical light rings can be generated in the moving process of the lighting panel, the elliptical light rings can be mutually overlapped, a main identification light ring (221) with the maximum brightness is formed by a reflection ring formed by the reflection of the main identification surface (22), boundary points at two ends in the length direction of elliptical light formed by the weak light correction cambered surface (23) are weak light boundary points (232), two points on the main identification light ring (221) and the elliptical light rings are overlapped to form the highest brightness point which is a strong light boundary point (222), and the intersection point of the connecting line of the strong light boundary point (222) and the connecting line of the weak light boundary point is the position of the circle center;
and determining the coordinate of the circle center in a coordinate image of the circle center position corresponding to the substrate (31), driving the press contact (338) to move right above a coordinate point, namely right above the keycap (2), through the positioning part (33), and then performing press detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010232245.2A CN111289235B (en) | 2020-03-27 | 2020-03-27 | Key cap convenient to press and detect and detection system for detecting key cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010232245.2A CN111289235B (en) | 2020-03-27 | 2020-03-27 | Key cap convenient to press and detect and detection system for detecting key cap |
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| Publication Number | Publication Date |
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| CN111289235A CN111289235A (en) | 2020-06-16 |
| CN111289235B true CN111289235B (en) | 2021-09-24 |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08219726A (en) * | 1995-02-09 | 1996-08-30 | Hitachi Ltd | Inspecting jig |
| JP4485667B2 (en) * | 2000-08-21 | 2010-06-23 | パナソニック株式会社 | Substrate for measuring offset of component mounting apparatus and offset measuring method of component mounting apparatus |
| CN207851244U (en) * | 2017-11-03 | 2018-09-11 | 邹金 | The equipment of proved keyboard quality |
| CN108982541A (en) * | 2018-09-11 | 2018-12-11 | 湖南铼锰途智能科技有限责任公司 | A kind of device for detecting keycaps and detection method |
| CN109785245B (en) * | 2018-12-06 | 2023-03-24 | 江苏大学 | Light spot image trimming method |
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Effective date of registration: 20220314 Address after: 402460 Rongsheng Road, Banqiao Industrial Park, Rongchang District, Chongqing, China Patentee after: CHONGQING DONGJU METAL PRODUCTS CO.,LTD. Address before: 223600 No. 09, Jizhuang group, Yanxia village, Yanji Town, Shuyang County, Suqian City, Jiangsu Province Patentee before: Ji Yufeng |