A sensor mounting structure for thickness trimming detection of a smart card
By protecting the sensor probe assembly with a metal detection head and slide rail structure, the problems of sensor damage and poor contact are solved, thus extending the sensor's service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ESIM TECH LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-07-10
AI Technical Summary
In existing smart card thickness edge detection devices, the sensors are prone to damage, the circuit contacts are poor, and the sensor probe assembly is damaged when the equipment fails, affecting its service life.
It adopts a metal detection head and slide rail structure. The horizontal plate is moved down by the cylinder, and the metal detection head presses down on the smart card. The combination structure of the slider and the vertical plate protects the sensor probe group, avoiding direct contact and vibration errors. The combination of ball bearings and movable springs improves stability.
It effectively protects the sensor probe assembly, prevents damage in case of equipment failure, reduces poor circuit contact and vibration errors, and extends the service life of the sensor.
Smart Images

Figure CN224480148U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of smart card thickness edge detection technology, and in particular relates to a sensor mounting structure for smart card thickness edge detection. Background Technology
[0002] Smart card: A general term for a plastic card (usually the size of a credit card) with an embedded microchip. Some smart cards contain a microelectronic chip and require a reader to exchange data. Smart cards are equipped with a CPU and RAM, allowing them to process large amounts of data independently without interfering with the host CPU's operation. During manufacturing, smart cards require thickness trimming, a step that necessitates the use of a smart card thickness trimming detection device.
[0003] High-precision thickness detection devices in smart card edge cutting equipment are particularly suitable for detecting thickness deviations of the smart card substrate after lamination and for dynamically adjusting the detection parameters of the edge cutting equipment. Some detection devices have sensors that move up and down with a cylinder structure assembly. Prolonged movement can damage the sensors and cause poor wiring contact. Furthermore, since the sensor probes directly contact the smart card, equipment malfunctions can directly damage the sensor probe assembly, rendering the main component unusable. Therefore, a sensor mounting structure for smart card thickness edge cutting detection is needed. Direct detection via a metal detection head can better protect the sensor probe assembly. Equipment malfunctions will not cause damage to the sensor probe assembly components. The sensor probe assembly is also fixed in position to prevent poor wiring contact or vibration errors during movement, thereby improving the sensor's lifespan. Utility Model Content
[0004] The purpose of this invention is to provide a sensor mounting structure for detecting the thickness and edge of a smart card. By directly detecting the thickness using a metal detection head, the sensor probe assembly can be better protected. In the event of a device malfunction, the smart card will not damage the components of the sensor probe assembly. Furthermore, the sensor probe assembly is fixed in a fixed position to prevent poor circuit contact or vibration errors during movement, thereby improving the service life of the sensor and solving the technical problems mentioned in the background.
[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A sensor mounting structure for detecting the thickness and edge of a smart card includes a sensor probe group and a metal detection head: a slide rail is provided on the outer side of the metal detection head, a mounting back plate is fixedly connected to the rear side of the slide rail, a cylinder is fixedly mounted on the surface of the mounting back plate by bolts, a horizontal plate is fixedly connected to the output end of the cylinder by a flange, a vertical plate is fixedly mounted on the top of the metal detection head, a slider is slidably connected to the surface of the slide rail, a fixing block is fixedly connected to the rear side of the mounting back plate by bolts, a sensor fixing block is provided on the surface of the mounting back plate, two symmetrically arranged slide rods are welded to the top of the vertical plate, the top of the slide rods extends through to the top of the horizontal plate and is fixedly connected to a limit plate, a movable spring is provided above the vertical plate, and a pressure sensor is fixedly connected to the bottom of the horizontal plate by bolts.
[0006] Preferably, the slider and the vertical plate are fixedly connected by bolts.
[0007] Preferably, the bottom of the horizontal plate has a rod hole adapted to the slide rod, and a ball bearing is embedded in the inner wall of the rod hole and the surface of the ball bearing is in contact with the slide rod.
[0008] Preferably, the two ends of the movable spring are fixedly connected to the pressure sensor at the bottom of the horizontal plate and the vertical plate, respectively.
[0009] Preferably, the mounting backplate and the sensor probe assembly are both fixedly connected to the sensor mounting block by bolts.
[0010] The beneficial effects of this utility model are:
[0011] 1. This utility model uses a cylinder to drive a horizontal plate to move downwards, which in turn drives a metal detection head to press down on the smart card via a vertical plate. The downward movement of the horizontal plate also squeezes the probes of the sensor probe group, allowing for direct detection by the metal detection head. This design better protects the sensor probe group, preventing damage to the components of the sensor probe group in case of equipment failure. Furthermore, the sensor probe group is fixed in a fixed position to prevent poor wiring contact or vibration errors during movement, thereby improving the service life of the sensor.
[0012] 2. By using ball bearings, this utility model provides padding protection between the inner wall of the rod hole and the slide rod, avoiding excessive wear when the two are in direct contact, thereby reducing losses. Attached Figure Description
[0013] in:
[0014] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;
[0015] Figure 2 This is one embodiment of the present utility model. Figure 1 A magnified view of point A in the middle;
[0016] Figure 3 This is a three-dimensional schematic diagram of a vertical plate and a slider according to an embodiment of the present invention;
[0017] Figure 4 This is a three-dimensional schematic diagram of the slide bar and the rod hole according to one embodiment of the present invention.
[0018] The attached diagram lists the components represented by each number as follows:
[0019] 1. Sensor probe assembly, 2. Metal detection head, 3. Slide rail, 4. Mounting back plate, 5. Cylinder, 6. Horizontal plate, 7. Vertical plate, 8. Slider, 9. Fixing block, 10. Sensor fixing block, 11. Slide rod, 12. Limiting plate, 13. Rod hole, 14. Ball bearing, 15. Movable spring. Detailed Implementation
[0020] In the following description, embodiments of the sensor mounting structure for detecting the thickness of a smart card will be described with reference to the accompanying drawings.
[0021] Example 1:
[0022] Figure 1-4 This invention illustrates a sensor mounting structure for detecting the thickness and edge of a smart card according to an embodiment of the present invention. The structure includes a sensor probe assembly 1 and a metal detection head 2. A slide rail 3 is provided on the outer side of the metal detection head 2. A mounting back plate 4 is fixedly connected to the rear side of the slide rail 3. A cylinder 5 is fixedly mounted on the surface of the mounting back plate 4 by bolts. A horizontal plate 6 is fixedly connected to the output end of the cylinder 5 via a flange. A vertical plate 7 is fixedly mounted on the top of the metal detection head 2. A slider 8 is slidably connected to the surface of the slide rail 3. The slider 8 and the vertical plate 7 are fixedly connected by bolts. A fixing block 9 is fixedly connected to the rear side of the mounting back plate 4 by bolts. A sensor mounting block is provided on the surface of the mounting back plate 4. The top of the fixed block 10 and the vertical plate 7 are welded with two symmetrically arranged sliding rods 11. The top of the sliding rods 11 extends through to the top of the horizontal plate 6 and is fixedly connected to the limiting plate 12. The bottom of the horizontal plate 6 is provided with rod holes 13 that are adapted to the sliding rods 11. The inner wall of the rod hole 13 is embedded with rolling balls 14. The surface of the balls 14 is in contact with the sliding rods 11. The setting of the balls 14 provides padding protection between the inner wall of the rod hole 13 and the sliding rods 11, avoiding the occurrence of large wear when the two are in direct contact, thereby reducing wear. A movable spring 15 is provided on the top of the vertical plate 7, and a pressure sensor is fixedly connected to the bottom of the horizontal plate 6 by bolts.
[0023] Example 2:
[0024] Figure 1-4This invention illustrates a sensor mounting structure for detecting the thickness and edge of a smart card according to an embodiment of the present invention. The structure includes a sensor probe assembly 1 and a metal detection head 2. A slide rail 3 is provided on the outer side of the metal detection head 2. A mounting back plate 4 is fixedly connected to the rear side of the slide rail 3. A cylinder 5 is fixedly mounted on the surface of the mounting back plate 4 by bolts. A horizontal plate 6 is fixedly connected to the output end of the cylinder 5 via a flange. A vertical plate 7 is fixedly mounted on the top of the metal detection head 2. A slider 8 is slidably connected to the surface of the slide rail 3. A fixing block 9 is fixedly connected to the rear side of the mounting back plate 4 by bolts. A sensor fixing block 10 is provided on the surface of the mounting back plate 4. Two symmetrically arranged slide rods 11 are welded to the top of the vertical plate 7. The top ends of the slide rods 11 extend through to the top of the horizontal plate 6 and are fixedly connected to a limit plate 12. A movable spring 15 is provided above the vertical plate 7. A pressure sensor is fixedly connected to the bottom of the horizontal plate 6 by bolts. The two ends of the movable spring 15 are fixedly connected to the pressure sensor at the bottom of the horizontal plate 6 and the vertical plate 7, respectively. The mounting back plate 4 and the sensor probe assembly 1 are both fixedly connected to the sensor fixing block 10 by bolts.
[0025] Working principle: When using this utility model, the user can:
[0026] - Step 1: Place the smart card material at the inspection station and manually move the cylinder up and down to the lower position using the button.
[0027] - Step 2: Zero the sensor value to zero;
[0028] - Step 3: Preset the maximum deviation value of thickness using the smart card specification sheet material dispensing method to complete the setting;
[0029] - Step 4: Using the out-of-tolerance smart card material, manually move the cylinder up and down to observe whether the sensor completes the alarm detection; if there is an abnormality, it means that the out-of-tolerance alarm setting is complete;
[0030] The specific operation is as follows: The cylinder 5 is activated, causing the horizontal plate 6 to move downwards. This causes the horizontal plate 6 to drive the metal detection head 2 to press down on the smart card via the vertical plate 7. The downward movement of the horizontal plate 6 also compresses the probes of the sensor probe group 1. The movable spring 15 replaces the previous direct contact between the sensor probes and the smart card material, which affected the lifespan of the springs inside the probes. The sliding rod 11 and the limiting plate 12 work together to limit the position and movement of the vertical plate 7, improving its stability during use. Direct detection by the metal detection head better protects the sensor probe group. In case of equipment failure, the smart card will not damage the components of the sensor probe group. Furthermore, the sensor probe group is fixed in position to prevent poor wiring contact or vibration errors during movement, thereby extending the sensor's lifespan.
[0031] In summary, the sensor mounting structure for detecting the thickness and edge of a smart card utilizes a cylinder 5 to move a horizontal plate 6 downwards. This horizontal plate 6, through a vertical plate 7, causes the metal detection head 2 to press down on the smart card. Furthermore, the downward movement of the horizontal plate 6 compresses the probes of the sensor probe group 1, enabling direct detection by the metal detection head. This design better protects the sensor probe group, preventing damage to the components of the sensor probe group in case of equipment failure. The fixed mounting position of the sensor probe group also prevents poor contact or vibration errors during movement, thereby extending the sensor's lifespan.
Claims
1. A sensor mounting structure for detecting the thickness and edge cutting of a smart card, characterized in that, The device includes a sensor probe assembly (1) and a metal detection head (2). A slide rail (3) is provided on the outer side of the metal detection head (2). A mounting back plate (4) is fixedly connected to the rear side of the slide rail (3). A cylinder (5) is fixedly mounted on the surface of the mounting back plate (4) by bolts. A horizontal plate (6) is fixedly connected to the output end of the cylinder (5) by a flange. A vertical plate (7) is fixedly mounted on the top of the metal detection head (2). A slider (8) is slidably connected to the surface of the slide rail (3). A fixing block (9) is fixedly connected to the rear side of the mounting back plate (4) by bolts. A sensor fixing block (10) is provided on the surface of the mounting back plate (4). Two symmetrically arranged slide rods (11) are welded to the top of the vertical plate (7). The top of the slide rods (11) extends through to the top of the horizontal plate (6) and is fixedly connected to a limit plate (12). A movable spring (15) is provided above the vertical plate (7). A pressure sensor is fixedly connected to the bottom of the horizontal plate (6) by bolts.
2. The sensor mounting structure for detecting the thickness of a smart card edge according to claim 1, characterized in that, The slider (8) and the vertical plate (7) are fixedly connected by bolts.
3. The sensor mounting structure for detecting the thickness of a smart card edge according to claim 2, characterized in that, The bottom of the horizontal plate (6) is provided with a rod hole (13) that is compatible with the slide rod (11). A ball bearing (14) is embedded in the inner wall of the rod hole (13) and is rolled. The surface of the ball bearing (14) is in contact with the slide rod (11).
4. The sensor mounting structure for detecting the thickness of a smart card edge according to claim 3, characterized in that, The two ends of the movable spring (15) are fixedly connected to the pressure sensor at the bottom of the horizontal plate (6) and the vertical plate (7), respectively.
5. The sensor mounting structure for detecting the thickness of a smart card edge according to claim 4, characterized in that, The mounting backplate (4) and the sensor probe group (1) are both fixedly connected to the sensor fixing block (10) by bolts.