Pressure-assisted keyboard defect detection device and detection method thereof

Abstract

The invention relates to the technical field of keyboard manufacturing, in particular to a pressure-assisted keyboard defect detection device and a detection method thereof. Comprising a detection table, a fixing groove is formed in the top of the detection table, a keyboard fixing part is arranged in the fixing groove, and a final detection unit is arranged over the fixing groove; the final testing unit comprises a bidirectional sliding table, a lifting plate is arranged at the bottom of the bidirectional sliding table, and a third electric push rod is arranged at the center of the bottom of the lifting plate. According to the invention, the detection speed is accelerated, and independent tests with different strengths and times can be carried out on each key by adjusting the stroke of each group of pressing mechanisms. And when the rebound condition of the key is simply tested, whether the rebound speed and amplitude of the key have defects or not under the conditions of different intensities and times is tested in a parallel mode of visual observation and a second pressure sensor. And the detection accuracy is improved while the detection speed is increased and the detection functions are enriched.

Description

Technical Field

[0001] The present invention belongs to the technical field of keyboard manufacturing, and particularly relates to a pressure-assisted keyboard defect detection device and a detection method thereof. Background Art

[0002] After the keyboard is manufactured, in order to ensure its normal use, it is necessary to perform pressing detection on each key of the keyboard, and then judge whether there are defects in the keyboard according to the rebound situation of the keys.

[0003] After retrieval, a patent document with the publication number CN222280501U, publication date December 31, 2024, and titled Keyboard defect detection device based on visual recognition is cited. It includes a workbench, two groups of support legs are symmetrically installed at the bottom edge of the workbench, a console is installed at the top edge of the workbench, a display screen is embedded in the top wall of one side of the console, a touch control panel is embedded in the wall of the console close to the display screen, the touch control panel is located below the display screen, and two groups of support columns are symmetrically installed at the center of the top edge of the workbench. In the above embodiment, while the first servo motor drives the sliding block to slide, it drives the mounting plate to move. The mounting plate drives the visual recognition mechanism and the first defect detection mechanism to move. The visual recognition mechanism recognizes the keyboard, the first defect detection mechanism detects the keyboard defects. At the same time, the stepping motor drives the second defect detection mechanism to perform angle adjustment, and the second defect detection mechanism detects the keyboard defects. The second servo motor drives the placement table and the keyboard to rotate, and the placement table detects the periphery of the keyboard, so that the keyboard can be detected in multiple directions, reducing the detection time and improving the work efficiency.

[0004] However, the above embodiment still has the following defects:

[0005] It is impossible to specifically and accurately detect the rebound situation and speed of each key, resulting in the inability to judge whether there are defects in the keyboard keys, resulting in a decrease in detection accuracy, and the detection function is too single. Summary of the Invention

[0006] In view of the above problems, the present invention provides a pressure-assisted keyboard defect detection device, including a detection table, a fixed slot is provided at the top of the detection table, a keyboard fixing component is provided in the fixed slot, and a final test unit is provided directly above the fixed slot;

[0007] The final test unit includes a bidirectional sliding table, a lifting plate is provided at the bottom of the bidirectional sliding table, and a third electric push rod is provided at the center of the bottom of the lifting plate; a detection plate is provided at the bottom of the third electric push rod;

[0008] A plurality of groups of second pressure sensors are provided at the bottom of the detection board, and the position distribution of the plurality of groups of second pressure sensors is the same as the position distribution of the keyboard keys; two groups of crescent-shaped through grooves are symmetrically provided on both sides of each second pressure sensor; a plurality of groups of pressing mechanisms equal in number to the second pressure sensors are arranged to be lifted in the detection board, and the bottom of each group of pressing mechanisms can extend below the second pressure sensors through the corresponding two groups of crescent-shaped through grooves;

[0009] Each group of pressing mechanisms corresponds to a group of keyboard keys. After the pressing mechanism presses the keys, the rebound speed and rebound amplitude of the keys are measured through visual observation and the second pressure sensors, and accurate measurement of all keys can be achieved in a short time.

[0010] Further, the keyboard fixing component includes a fixing seat, the fixing seat is installed at the opening edge of the top of the fixing groove, an inclined block is provided on the top of the fixing seat, and one side wall of the inclined block away from the inner wall of the fixing groove is an inclined surface.

[0011] Further, a plurality of groups of crescent-shaped grooves with a fan-shaped cross-section in the side view are arranged at equal intervals along the length direction on the inclined surface; an upper pressing plate is provided above the inclined block, a clamping block is provided on the side wall of the upper pressing plate, and the other end of the clamping block is movably clamped on the fixing seat.

[0012] Further, a side groove is opened at one side edge of the top opening of the fixing groove, a heating component is provided on the inner wall of the bottom of the fixing groove, the output end of the heating component is vertically upward, a cooling component is provided in the side groove, and the output end of the cooling component faces the fixing groove; the structure of the cooling component is the same as that of the heating component.

[0013] Further, the heating component includes a horizontally arranged heat transfer pipe, two groups of row plates are symmetrically provided on the top of the heat transfer pipe along the central axis of its own length direction, the side view cross-section of the row plate is a fan-shaped structure, a plurality of heat outlet ports are evenly distributed on the top of the row plate, and the input ends of the heat outlet ports are communicated with the heat transfer pipe.

[0014] Further, a preliminary measurement unit is provided at the top edge of one side wall of the detection table perpendicular to the side groove. The preliminary measurement unit includes a side plate, a first electric push rod is arranged horizontally on the side wall of the side plate close to the detection table, and a translation frame is provided at the output end of the first electric push rod.

[0015] Further, a second electric push rod is arranged vertically at the bottom of the translation frame, a roller mounting frame is provided at the bottom of the second electric push rod, and a push roller is rotatably connected in the roller mounting frame; the bottom of the push roller extends below the roller mounting frame.

[0016] Further, a number of groups of extension blocks are arranged at equal intervals on one side of the pushing roller close to the side plate. A first pressure sensor is provided at the bottom of each group of extension blocks, and the height of the bottom of the first pressure sensor is higher than the height of the bottom of the pushing roller.

[0017] Further, the pressing mechanism includes a vertically arranged micro servo electric cylinder. A push plate is installed at the bottom of the micro servo electric cylinder. Two pressing blocks are symmetrically arranged at the two side edges of the push plate. The two pressing blocks respectively extend to the lower part of the second pressure sensor through two crescent-shaped through grooves.

[0018] A detection method for a pressure-assisted keyboard defect detection device, the detection method includes:

[0019] Fix the keyboard using the keyboard fixing component;

[0020] Perform high and low temperature operations on the keyboard;

[0021] Conduct a preliminary detection on each key of the keyboard to determine whether the key can rebound;

[0022] Start the third electric push rod, drive the detection plate to descend through the third electric push rod until it fits on the keyboard surface;

[0023] Through the fine adjustment of the bidirectional electric sliding table, each group of second pressure sensors can be made to contact the surface of a corresponding group of keys;

[0024] Control each group of pressing mechanisms to descend and press the keys;

[0025] After pressing the keys, control the pressing mechanism to quickly rise and separate from the keys;

[0026] Based on the pressure time and pressure value received by each group of second pressure sensors, accurately judge the specific rebound height and rebound speed of each group of keys;

[0027] Then, by adjusting the stroke of a certain group or several groups of pressing mechanisms to change the pressing force, and then pressing the corresponding keys again, to test whether there are defects in the rebound speed and amplitude of the keys under different intensities and numbers of times.

[0028] The beneficial effects of the present invention are:

[0029] 1. By controlling the pressing mechanism to descend and press the keys, and then quickly ascending after completion. Based on the pressure time and pressure values received by each group of second pressure sensors, in cooperation with visual observation, the specific rebound height and rebound speed of each group of keys can be accurately judged. This not only speeds up the detection process but also enables independent testing of each key with different intensities and numbers of presses by adjusting the stroke of each pressing mechanism. Meanwhile, while simply testing the key rebound situation, the rebound speed and amplitude of the keys under different intensities and numbers of presses are tested by combining visual observation and the parallel operation of the second pressure sensors. This improves the detection accuracy while accelerating the detection speed and enriching the detection functions.

[0030] 2. The first electric push rod is used to push the roller to translate and roll-fit with the keyboard, thereby pressing each key row by row in sequence. When the roller leaves a row of keys, each group of first pressure sensors arrives immediately, and the pressure received by each group of first pressure sensors is used to judge whether each key can rebound normally. Without manual testing, the rebound situation of all keys can be detected in a short time, thus finding out the defects among them. This not only shortens the detection time but also improves the automation degree of the device.

[0031] 3. Before detecting the keyboard, heating or cooling treatment is first carried out through the heating component or the cooling component to simulate different real usage environments. Due to the principle that hot air rises and cold air descends, the heating component and the cooling component are respectively arranged at different positions at the bottom and the side, so that more hot air and cold air can act on the keyboard. At the same time, since both groups of row plates are fan-shaped ring structures and are symmetrically arranged, after the hot air and cold air are discharged, a circuit is formed between them and the keyboard, making the keyboard absorb hot air or cold air more thoroughly. This not only makes the test structure more in line with reality but also can speed up the time of high and low temperature operations, thus improving the detection efficiency.

[0032] 4. The two side walls of the keyboard are respectively clamped in the triangular abutment groove and the crescent groove, which enables keyboards of different widths to be limited. Without structures such as springs that cannot be fixedly arranged, while ensuring the compatibility of the device, the problem of keyboard displacement due to pressure during detection is avoided. And the side view cross-section of the triangular abutment groove is a triangular structure, and the side view cross-section of the crescent groove is a fan-shaped ring structure, which ensures the fixing effect of the keyboard while avoiding wear on the keyboard edge.

[0033] Other features and advantages of the present invention will be described in the subsequent specification, and some of them will become obvious from the specification or be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures pointed out in the specification, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0035] Figure 1 Shows a schematic structural diagram of a detection device according to an embodiment of the present invention.

[0036] Figure 2 Shows a schematic structural diagram of a detection table according to an embodiment of the present invention.

[0037] Figure 3 Shows a schematic structural diagram of a keyboard fixing component according to an embodiment of the present invention.

[0038] Figure 4 Shows a schematic structural diagram of a backing plate according to an embodiment of the present invention.

[0039] Figure 5 Shows a schematic structural diagram of a heating component according to an embodiment of the present invention.

[0040] Figure 6 Shows a schematic structural diagram of a preliminary measurement unit according to an embodiment of the present invention.

[0041] Figure 7 Shows a connection schematic diagram of a roller mounting bracket and a pushing roller according to an embodiment of the present invention.

[0042] Figure 8 Shows a bottom view schematic diagram of a pushing roller according to an embodiment of the present invention.

[0043] Figure 9 Shows a schematic structural diagram of a final measurement unit according to an embodiment of the present invention.

[0044] Figure 10 Shows a bottom view schematic diagram of a detection plate according to an embodiment of the present invention.

[0045] Figure 11 Shows a schematic structural diagram of a crescent through groove according to an embodiment of the present invention.

[0046] Figure 12 Shows a cross-sectional view schematic diagram of a detection plate according to an embodiment of the present invention.

[0047] Figure 13 Shows a schematic structural diagram of a pressing mechanism according to an embodiment of the present invention.

[0048] In the figure: 100, detection table; 110, fixed groove; 120, keyboard fixing component; 121, fixing base; 122, upper pressing plate; 123, inclined block; 124, crescent groove; 125, clamping block; 130, side groove; 140, abutting plate; 141, triangular abutting groove; 150, touch screen type controller; 160, heating component; 161, heat transfer pipe; 162, row plate; 163, heat outlet; 170, cooling component; 200, preliminary testing unit; 210, side plate; 220, first electric push rod; 230, translation frame; 240, second electric push rod; 250, roller mounting frame; 260, pushing roller; 270, extension block; 280, first pressure sensor; 300, top plate; 400, final testing unit; 401, horizontal electric sliding table; 402, vertical electric sliding table; 410, lifting plate; 420, third electric push rod; 421, gas spring; 430, detection plate; 440, calibration ring; 450, second pressure sensor; 460, crescent through groove; 470, pressing mechanism; 471, micro servo electric cylinder; 472, pushing plate; 473, pressing block. Detailed implementation mode

[0049] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0050] The embodiments of the present invention provide a pressure-assisted keyboard defect detection device. Exemplarily, as Figure 1 shown, it includes a detection table 100. A fixed groove 110 is opened at the center of the top of the detection table 100. A side groove 130 is opened at the edge of one side of the top opening of the fixed groove 110. Two groups of keyboard fixing components 120 are symmetrically arranged on both sides of the side groove 130. The keyboard fixing component 120 is used to fix the keyboard.

[0051] Specifically, an abutting plate 140 is installed on the side wall of the fixed groove 110 away from the side groove 130. A touch screen type controller 150 is installed on the side wall of the detection table 100. The touch screen type controller 150 is used to control the overall working state of the device.

[0052] Specifically, a preliminary testing unit 200 is provided at the top edge of the side wall of the detection table 100 perpendicular to the side groove 130. The preliminary testing unit 200 is used to preliminarily detect the rebound condition of each key of the keyboard.

[0053] Specifically, a top plate 300 is provided directly above the fixing groove 110, and a final testing unit 400 is installed at the bottom of the top plate 300. The final testing unit 400 is used to accurately detect each specific key.

[0054] Exemplarily, as Figure 2 shown, a heating component 160 is provided on the inner wall of the bottom of the fixing groove 110, the output end of the heating component 160 is vertically upward, a cooling component 170 is provided in the side groove 130, and the output end of the cooling component 170 faces the fixing groove 110. The structure of the cooling component 170 is the same as that of the heating component 160.

[0055] Exemplarily, as Figure 3 shown, the keyboard fixing component 120 includes a fixing base 121, the fixing base 121 is installed at the edge of the top opening of the fixing groove 110, an inclined block 123 is provided on the top of the fixing base 121, one side wall of the inclined block 123 away from the inner wall of the fixing groove 110 is an inclined surface, and a plurality of groups of crescent grooves 124 with a fan-shaped cross-section in the side view are arranged at equal intervals along the length direction on the inclined surface. An upper pressing plate 122 is provided above the inclined block 123, a clamping block 125 is provided on the side wall of the upper pressing plate 122, and the other end of the clamping block 125 is movably clamped on the fixing base 121.

[0056] Exemplarily, as Figure 4 shown, a plurality of groups of triangular abutting grooves 141 are arranged at equal intervals in the vertical direction on the abutting plate 140, and the port cross-section of the triangular abutting grooves 141 is an isosceles triangle structure.

[0057] Exemplarily, as Figure 5 shown, the heating component 160 includes a horizontally arranged heat transfer pipe 161, two groups of row plates 162 are symmetrically arranged along the central axis of the heat transfer pipe 161 in the length direction at the top of the heat transfer pipe 161, the side view cross-section of the row plates 162 is a fan-shaped structure, a plurality of groups of heat outlets 163 are evenly distributed at the top of the row plates 162, and the input ends of the heat outlets 163 are communicated with the heat transfer pipe 161.

[0058] Specifically, the touch screen type controller 150 is electrically connected to the heating component 160, the cooling component 170, the initial testing unit 200 and the final testing unit 400.

[0059] Specifically, a heating device is communicated with the input end of the heating component 160, the heating device is preferably a hot air blower, a refrigeration device is communicated with the input end of the cooling component 170, and the refrigeration device is preferably a cold air blower.

[0060] First, open the upper pressing plate 122. Then, according to the keyboard size, abut one side wall of the keyboard against a corresponding group of crescent grooves 124, and snap the other side wall of the keyboard into a corresponding group of triangular abutting grooves 141 at a corresponding height. Then, according to the detection requirements, turn on the heating component 160 or the cooling component 170 to perform high and low temperature operations on the keyboard to simulate different real usage environments. Then, preliminarily detect each key of the keyboard through the preliminary detection unit 200 to observe whether each key can rebound normally. Then, precisely detect each key through the final detection unit 400 to detect whether the rebound speed and rebound amplitude of the key are qualified.

[0061] Before detecting the keyboard, first perform heating or cooling treatment through the heating component 160 or the cooling component 170 to simulate different real usage environments. Due to the principle that hot air rises and cold air descends, the heating component 160 and the cooling component 170 are respectively arranged at different positions at the bottom and the side, so that both hot air and cold air can act more on the keyboard. At the same time, since the two sets of discharge plates 162 are both fan-shaped ring structures and are symmetrically arranged, after the hot air and cold air are discharged, a circuit is formed between them and the keyboard, so that the keyboard can absorb hot air or cold air more thoroughly. This not only makes the test structure more in line with reality, but also can shorten the time of high and low temperature operations, thereby improving the detection efficiency.

[0062] The two side walls of the keyboard are respectively snapped into the triangular abutting grooves 141 and the crescent grooves 124, which enables keyboards of different widths to be limited, and there is no need for structures such as springs that cannot be fixedly arranged. While ensuring the compatibility of the device, it also avoids the problem that the keyboard moves due to pressure during detection. And the side view cross-section of the triangular abutting groove 141 is a triangular structure, and the side view cross-section of the crescent groove 124 is a fan-shaped ring structure, which ensures the fixing effect of the keyboard while avoiding wear on the keyboard edge.

[0063] Exemplarily, as Figure 6 、 Figure 7 and Figure 8 shown, the preliminary detection unit 200 includes a side plate 210. A first electric push rod 220 is horizontally arranged on one side wall of the side plate 210 close to the detection table 100. A translation frame 230 is arranged at the output end of the first electric push rod 220. A second electric push rod 240 is vertically arranged at the bottom of the translation frame 230. A roller mounting frame 250 is arranged at the bottom of the second electric push rod 240. A push roller 260 is rotatably connected in the roller mounting frame 250. The bottom of the push roller 260 extends below the roller mounting frame 250.

[0064] Exemplarily, a plurality of groups of extension blocks 270 are arranged at equal intervals on one side of the push roller 260 close to the side plate 210 , and a group of first pressure sensors 280 are provided at the bottom of each group of extension blocks 270 . The bottom height of the first pressure sensors 280 is higher than the bottom height of the push roller 260 .

[0065] First, the first electric push rod 220 is started, and the push roller 260 is pushed by the first electric push rod 220 to the top of a row of keys at the edge of the keyboard, and then the second electric push rod 240 is started, so that the push roller 260 descends and presses on the row of keys until the bottom height of the first pressure sensor 280 is the same as the top height when the keys are not pressed. Then the first electric push rod 220 is started, and the push roller 260 is pushed by the first electric push rod 220 to translate and roll with the keyboard, so as to press each key in order in a row. When the push roller 260 leaves a row of keys, each group of first pressure sensors 280 arrives, and judges whether each key can rebound normally by the pressure received by each group of first pressure sensors 280. Without manual testing, the rebound of all keys can be detected in a short time, so as to find out the defects. Not only the detection time is shortened, but also the automation of the device is improved.

[0066] For example, Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown, the final measurement unit 400 includes a bidirectional slide, and the bidirectional slide includes a transverse electric slide 401 and a longitudinal electric slide 402 which are perpendicular to each other. The bottom of the bidirectional slide is connected to a lifting plate 410 in a transmission manner, and a third electric push rod 420 is provided at the center of the bottom of the lifting plate 410. A detection plate 430 is provided at the bottom of the third electric push rod 420, and two groups of gas springs 421 are symmetrically provided on both sides of the third electric push rod 420.

[0067] Exemplarily, a plurality of calibration rings 440 are provided at the bottom of the detection plate 430, and the position distribution of the plurality of calibration rings 440 is the same as the position distribution of the keyboard keys. A second pressure sensor 450 is provided at the center of the top of the calibration ring 440, and the bottom height of the second pressure sensor 450 is lower than the bottom height of the calibration ring 440. Two groups of crescent grooves 460 are symmetrically provided on both sides of the second pressure sensor 450. A plurality of pressing mechanisms 470, the same number as the second pressure sensors 450, are provided in the detection plate 430 for lifting and lowering, and the bottom of each group of pressing mechanisms 470 can extend to the bottom of the detection plate 430 through the corresponding two groups of crescent grooves 460.

[0068] For example, Figure 13As shown in the figure, the pressing mechanism 470 includes a vertically arranged micro servo electric cylinder 471, and the brand model of the micro servo electric cylinder 471 is LUILEC-LMNTL. A push plate 472 is installed at the bottom of the micro servo electric cylinder 471, and two groups of pressing blocks 473 are symmetrically arranged at the two side edges of the push plate 472. The two groups of pressing blocks 473 respectively extend to the lower part of the second pressure sensor 450 through two crescent-shaped through grooves 460.

[0069] Specifically, the distance between adjacent two groups of the second pressure sensors 450 is preferably 19.05 mm.

[0070] Start the third electric push rod 420, drive the detection plate 430 to descend through the third electric push rod 420 until it fits on the keyboard surface, and then through the fine adjustment of the bidirectional electric sliding table, so that each group of second pressure sensors 450 can contact the surface of a corresponding group of keys. Then start each group of micro servo electric cylinders 471, push the pressing blocks 473 to descend through each group of micro servo electric cylinders 471, press the keys, and then quickly rise. Then, based on the pressure time and pressure values received by each group of second pressure sensors 450, accurately judge the specific rebound height and rebound speed of each group of keys. By pressing the keys with the pressing blocks 473 descending to apply pressure, it is used to assist in the detection of key defects. And each group of pressing blocks 473 independently corresponds to a group of micro servo electric cylinders 471, which enables each group of keys to independently perform tests with different pressing amplitudes and pressing times. Without manual pressing, the rebound height and rebound speed of each group of keys can be accurately detected. It not only speeds up the detection speed but also can independently test each key with different intensities and times. And it can not only simply test the rebound situation of the keys but also test whether the rebound speed and rebound amplitude of the keys can meet the standards under different intensities and times. While speeding up the detection speed and enriching the detection functions, it also improves the detection accuracy.

[0071] The above embodiments have the following beneficial effects:

[0072] 1. First, through the work of the third electric push rod 420 and the bidirectional electric sliding table, each group of second pressure sensors 450 respectively contact the corresponding keys, and then the pressing blocks 473 are pushed to descend through the micro servo electric cylinders 471 to press the keys, and then quickly rise after the end. Then, based on the pressure time and pressure values received by each group of second pressure sensors 450, without manual pressing, the specific rebound height and rebound speed of each group of keys can be accurately judged. It not only speeds up the detection speed but also can independently test each key with different intensities and times. And while simply testing the rebound situation of the keys, it can also test whether there are defects in the rebound speed and amplitude of the keys under different intensities and times. While speeding up the detection speed and enriching the detection functions, it also improves the detection accuracy.

[0073] 2. The first electric push rod 220 is used to push the roller 260 to translate and rollingly fit with the keyboard, so as to press each key row by row in sequence. When the roller 260 leaves a certain row of keys, each group of first pressure sensors 280 will arrive accordingly, and the pressure received by each group of first pressure sensors 280 is used to judge whether each key can normally rebound. Without manual testing, the rebound conditions of all keys can be detected in a short time, so as to find out the defects among them. This not only shortens the detection time, but also improves the automation degree of the device.

[0074] 3. Before detecting the keyboard, first perform heating or cooling treatment through the heating component 160 or the cooling component 170 to simulate different real usage environments. Due to the principle that hot air rises and cold air descends, the heating component 160 and the cooling component 170 are respectively arranged at different positions at the bottom and the side, so that more hot air and cold air can act on the keyboard. At the same time, since the two sets of row plates 162 are both fan-shaped ring structures and are symmetrically arranged, after the hot air and cold air are discharged, a loop is formed between them and the keyboard, so that the keyboard can absorb hot air or cold air more thoroughly. This not only makes the test structure more in line with reality, but also can speed up the time of high and low temperature operations, thereby improving the detection efficiency.

[0075] 4. The two side walls of the keyboard are respectively clamped in the triangular abutment groove 141 and the crescent groove 124, which enables keyboards of different widths to be limited, and there is no need for structures such as springs that cannot be fixedly arranged. While ensuring the compatibility of the device, it also avoids the problem that the keyboard moves due to pressure during detection. And the side view cross-section of the triangular abutment groove 141 is a triangular structure, and the side view cross-section of the crescent groove 124 is a fan-shaped ring structure, which ensures the fixing effect of the keyboard while avoiding wear on the keyboard edge.

[0076] Based on the above-mentioned pressure-assisted keyboard defect detection device, an embodiment of the present invention also proposes a detection method for this detection device. Exemplarily, the detection method includes:

[0077] Open the upper pressure plate, and then according to the keyboard size, abut one side wall of the keyboard against a corresponding group of crescent grooves, and clamp the other side wall of the keyboard in a corresponding group of triangular abutment grooves at a corresponding height to complete the fixation of the keyboard;

[0078] According to the detection requirements, turn on the heating component and the cooling component to perform high and low temperature operations on the keyboard to simulate different real usage environments;

[0079] Start the first electric push rod, and use the first electric push rod to push the roller to the position directly above the outermost row of keys on the keyboard;

[0080] Start the second electric push rod to lower the pushing roller and press it on this row of keys until the bottom height of the first pressure sensor is the same as the top height of the keys when not pressed;

[0081] Start the first electric push rod, and use the first electric push rod to push the pushing roller to translate and rollingly fit with the keyboard, so as to press each key in sequence in a row;

[0082] When the pushing roller leaves a row of keys, each group of first pressure sensors will arrive accordingly, and judge whether each key can rebound normally through the pressure received by each group of first pressure sensors;

[0083] After the initial measurement is completed, start the first electric push rod to drive the pushing roller to return to its original position;

[0084] Start the third electric push rod, and drive the detection plate to descend through the third electric push rod until it fits on the keyboard surface;

[0085] Through the fine adjustment of the bidirectional electric slide table, each group of second pressure sensors can be made to contact the surface of a corresponding group of keys;

[0086] Start each group of micro servo cylinders, and drive the pressing block to descend through each group of micro servo cylinders and press the keys;

[0087] After pressing the keys, control the pressing block to quickly rise and separate from the keys;

[0088] Through the pressure time and pressure value received by each group of second pressure sensors, accurately judge the specific rebound height and rebound speed of each group of keys;

[0089] Then, by adjusting the stroke of a certain group or several groups of micro servo cylinders to change the pressing force, and then pressing the corresponding keys again, so as to test whether there are defects in the rebound speed and amplitude of the keys under different intensities and numbers of times.

[0090] Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pressure-assisted keyboard defect detection device, comprising a detection platform, a fixing groove is provided on the top of the detection platform, characterized in that: A keyboard fixing component is provided in the fixing groove, and a final test unit is provided just above the fixing groove; The final measurement unit comprises a bidirectional slide, a lifting plate is provided at the bottom of the bidirectional slide, a third electric push rod is provided at the center of the bottom of the lifting plate; a detection plate is provided at the bottom of the third electric push rod; A plurality of groups of second pressure sensors are arranged at the bottom of the detection plate, and the position distribution of the plurality of groups of second pressure sensors is the same as the position distribution of keyboard keys; two groups of crescent grooves are symmetrically arranged on both sides of the second pressure sensors; a plurality of groups of pressing mechanisms are arranged in the detection plate for lifting and lowering, and the bottom of each group of the pressing mechanisms can extend to the bottom of the second pressure sensor through the corresponding two groups of crescent grooves; Each group of pressing mechanisms corresponds to a group of keyboard keys. After the pressing mechanism presses the keys, the rebound speed and rebound amplitude of the keys are measured through visual observation and a second pressure sensor, thereby achieving accurate measurement of all keys in a short time.

2. A pressure-assisted keyboard defect detection device according to claim 1, characterized in that: The keyboard fixing component comprises a fixing seat, which is installed at the top opening edge of the fixing groove. An inclined block is arranged on the top of the fixing seat, and a side wall of the inclined block away from the inner wall of the fixing groove is an inclined surface.

3. A pressure-assisted keyboard defect detection device according to claim 2, characterized in that: The inclined surface is provided with a plurality of groups of crescent grooves with fan-shaped cross-sections arranged at equal intervals along the length direction; an upper pressure plate is provided above the inclined block, a clamping block is provided on the side wall of the upper pressure plate, and the other end of the clamping block is movably clamped on the fixing seat.

4. A pressure-assisted keyboard defect detection device according to claim 2, characterized in that: A side groove is provided at one edge of the top opening of the fixed groove, a heating component is provided on the inner wall of the bottom of the fixed groove, the output end of the heating component is vertically upward, a cooling component is provided in the side groove, the output end of the cooling component is facing the fixed groove; the structure of the cooling component is the same as that of the heating component.

5. A pressure-assisted keyboard defect detection device according to claim 4, characterized in that: The heating component includes a horizontally arranged heat transfer pipe, and two groups of plates are symmetrically arranged on the top of the heat transfer pipe along the central axis of its own length direction. The side view cross-section of the plate is a fan-shaped ring structure, and a plurality of groups of heat outlets are evenly distributed on the top of the plate. The input end of the heat outlet is connected to the heat transfer pipe.

6. A pressure-assisted keyboard defect detection device according to claim 2, characterized in that: A preliminary measuring unit is provided at the top edge of a side wall of the testing platform perpendicular to the side groove. The preliminary measuring unit includes a side plate. A first electric push rod is provided horizontally on a side wall of the side plate close to the testing platform. A translation frame is provided on the output end of the first electric push rod.

7. A pressure-assisted keyboard defect detection device according to claim 6, characterized in that: A second electric push rod is provided at the bottom of the translation frame in the vertical direction, a roller mounting frame is provided at the bottom of the second electric push rod, a push roller is rotatably connected inside the roller mounting frame, and the bottom of the push roller extends to below the roller mounting frame.

8. The pressure-assisted keyboard defect detection device according to claim 7, characterized in that: A plurality of groups of extension blocks are arranged at equal intervals on one side of the push roller close to the side plate, and a group of first pressure sensors are provided at the bottom of each group of extension blocks. The bottom height of the first pressure sensors is higher than the bottom height of the push roller.

9. The pressure-assisted keyboard defect detection device according to claim 1, characterized in that: The pressing mechanism includes a vertically arranged micro servo electric cylinder, a push plate is installed at the bottom of the micro servo electric cylinder, and two groups of pressing blocks are symmetrically arranged at the edges of both sides of the push plate. The two groups of pressing blocks are respectively extended to the bottom of the second pressure sensor through two groups of crescent grooves.

10. The detection method applied to the pressure-assisted keyboard defect detection device according to any one of claims 1 to 9, characterized in that: The detection method comprises: Fix the keyboard using the keyboard fixing component; Perform high and low temperature operations on the keyboard; Perform a preliminary test on each key of the keyboard to determine whether the key can rebound; The third electric push rod is started to drive the detection plate to descend until it is attached to the keyboard surface; Through fine adjustment of the bidirectional electric slide, each group of second pressure sensors can contact the surface of a corresponding group of keys; Control each group of pressing mechanisms to descend and press the buttons; After pressing the button, the pressing mechanism is controlled to rise quickly and disengage from the button; The specific rebound height and rebound speed of each group of keys can be accurately determined through the pressure time and pressure value received by each group of second pressure sensors; Then, the stroke of one or more groups of pressing mechanisms is adjusted to change the pressing force, and then the corresponding keys are pressed again to test whether there are defects in the rebound speed and amplitude of the keys under different intensities and times.

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