Thermistor testing device
By designing a thermistor testing device that includes a frame, a push assembly, and a pawl-ratchet mechanism, the problem of low efficiency caused by frequent insertion and removal in thermistor testing is solved, realizing automated continuous testing and improving testing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ANHUI JINGER ELECTRONICS CO LTD
- Filing Date
- 2025-12-05
- Publication Date
- 2026-04-28
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing thermistor testing devices require frequent insertion and removal of thermistors during use, resulting in low testing efficiency and the inability to achieve continuous testing.
A thermistor testing device was designed, comprising a frame, a push assembly, a conveying device, a test interface, and a drive assembly. Through the cooperation of pawls and ratchet grooves, the thermistors are automatically connected and transferred, ensuring the continuity of the testing process.
It improves the continuity and efficiency of thermistor testing, reduces manual operation, and increases the degree of automation in testing.
Smart Images
Figure CN121933155A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of resistance detection technology, specifically to a thermistor testing device. Background Technology
[0002] Thermistors possess advantages such as high sensitivity, good stability, fast response, long lifespan, and low cost, making them widely used in automatic temperature control circuits for fixed-point temperature measurement, such as temperature control systems in refrigerators, air conditioners, and greenhouses. When combined with a simple amplifier circuit, a thermistor can detect temperature changes as small as one-thousandth of a degree Celsius, thus forming a thermometer with electronic instruments capable of high-precision temperature measurement. General-purpose thermistors operate from -55°C to +315°C, while special low-temperature thermistors can measure ultra-low temperatures down to -273°C. However, thermistor applications suffer from significant measurement errors due to poor consistency, limiting their use to applications where high measurement accuracy is not critical. A thermistor testing device is needed to address this issue.
[0003] During the testing process, the two terminals of the thermistor need to be inserted into the test interface for testing. However, existing thermistor testing devices generally place the thermistor on a fixed part and then test it through the test interface. After the test is completed, the tested thermistor is removed and then an untested thermistor is placed in, resulting in continuous operation and low testing efficiency. Summary of the Invention
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a thermistor testing device.
[0005] To achieve the above objectives, the present invention provides the following technical solution: A thermistor testing device includes a frame and a pushing assembly. The frame is equipped with a conveying device, and multiple placement assemblies for placing thermistors are connected to the conveying device. The pushing assembly is equipped with a test interface, and a test board is connected to one side of the test interface. A driving assembly for driving the conveying device is provided on one side of the frame. A pushing component for driving the driving assembly is connected to the pushing assembly. Fixing assemblies for fixing the placement assemblies are provided on both sides of the frame.
[0006] Preferably, the conveying device includes a drive roller and a driven roller rotatably connected inside the frame, the drive roller and the driven roller being drivenly connected to a conveyor belt, and the placement assembly being fixedly connected to the conveyor belt.
[0007] Preferably, the drive assembly includes two sets of rotating shafts, a synchronous belt, and a rotating rod. The two sets of rotating shafts are fixedly connected to the driving roller and the driven roller, respectively. A first synchronous pulley is fixedly connected to the outer surface of each set of rotating shafts. The rotating rod is rotatably connected to one side of the frame via a bearing seat. A second synchronous pulley is fixedly connected to the outer surface of the rotating rod. The synchronous belt is driven and connected to the first and second synchronous pulleys. A rotating assembly is fixedly connected to the side of the rotating rod away from the frame. The rotating assembly is configured to cooperate with the pusher.
[0008] Preferably, the rotating assembly includes a connecting plate fixedly connected to the rotating rod. A placement groove is provided on one side of the connecting plate. A pawl is rotatably connected to the inside of the placement groove via a pin. An installation ring is rotatably connected to the outer surface of the rotating rod via a rotating component. A connecting ring is fixedly connected to one side of the installation ring. A hollow gear that cooperates with the pushing component is fixedly connected to the other side of the connecting ring. The inner wall of the hollow gear is provided with a ratchet groove that cooperates with the pawl.
[0009] Preferably, the pushing member includes a connecting plate fixedly connected to the pushing assembly, a placement seat fixedly connected to one side of the connecting plate, two sets of placement frames fixedly connected inside the placement seat, and a sprocket that meshes with the empty sleeve gear connected between the two sets of placement frames.
[0010] Preferably, the pushing component includes a connecting frame, a driving component is provided on the connecting frame, one end of the driving component is fixedly connected to a limiting frame that cooperates with the fixing component, a connecting rod is fixedly connected on the limiting frame, the other end of the connecting rod is fixedly connected to the test interface, the connecting plate is fixedly connected to the limiting frame, and the test plate is fixedly connected to one side of the limiting frame.
[0011] Preferably, the placement assembly includes a placement frame fixedly connected to the conveyor belt. The placement frame has sliding grooves on both sides and placement slots on the inner walls of both sides. The two sets of placement slots are respectively connected to the two sets of sliding grooves. A sliding block is slidably connected inside the sliding groove. A fixing plate is fixedly connected to one side of the sliding block. The fixing plate is located inside the placement slot. A first spring is sleeved on the sliding block, and both ends of the first spring are fixedly connected to the fixing plate and the inner wall of the placement slot, respectively.
[0012] Preferably, guide grooves are provided on both sides of the frame, and the fixing component includes a guide post slidably connected inside the guide groove. A limiting block that cooperates with the limiting frame is fixedly connected to one side of the guide post. The limiting block has a trapezoidal structure, and a second spring is sleeved on the guide post. The two sides of the second spring are fixedly connected to the limiting block and the frame, respectively.
[0013] The beneficial effects of this invention are as follows: The thermistor testing device provided by this invention allows the thermistor to be placed inside the placement assembly when testing is required. The driving mechanism is activated, moving the test interface and test board downwards to connect with the thermistor located below the test interface. During the test, the data on the corresponding display screen of the test board is observed. After the test is completed, the driving mechanism is activated again, moving the test interface upwards. This causes the pushing component to rotate the rotating assembly. The pawl and ratchet groove work together to rotate the second synchronous wheel on the rotating rod, which in turn causes the shaft with the first synchronous wheel to rotate via the synchronous belt. This, in turn, causes the driving roller and the driven roller to rotate. The conveyor belt transports the next placement assembly containing untested thermistors to below the test interface, allowing for the testing of the next group of thermistors. Due to the presence of the pawl and ratchet groove, the rotating rod does not rotate when the driving mechanism moves the pushing component downwards, resulting in better continuity of the device and improved testing efficiency. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the basic structure of the present invention; Figure 2 This is a schematic diagram of the pushing component structure of the present invention; Figure 3 This is a schematic diagram of the transmission device structure of the present invention; Figure 4 This is a schematic diagram of the placement component structure of the present invention; Figure 5 This is a schematic diagram of the rotating component structure of the present invention; Figure 6 This is an exploded view of the rotating assembly of the present invention; Figure 7 This is a schematic diagram of the hollow gear structure of the present invention; Figure 8 This is a schematic diagram of the pushing component structure of the present invention; Figure 9 This is a schematic diagram of the fixed component structure of the present invention. Detailed Implementation
[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0016] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0017] Example 1, such as Figure 1 As shown, the present invention provides a thermistor testing device, including a frame 1 and a pushing assembly 2. The frame 1 is equipped with a conveying device 3, and multiple sets of placement assemblies 4 for placing thermistors are connected to the conveying device 3. A test interface 5 is mounted on the pushing assembly 2, and a test board 6 is connected to one side of the test interface 5. A driving assembly 7 for driving the transmission device is provided on one side of the frame 1, and a pushing member 8 for driving the driving assembly 7 is connected to the pushing assembly 2. Fixing assemblies 9 for fixing the placement assemblies 4 are provided on both sides of the frame 1. When the thermistor needs to be tested, the thermistor is placed inside the placement assembly 4. The pushing assembly 2 drives the test interface 5 and the test board 6 downwards, connecting them to the thermistor located below the test interface 5. During the test, the data on the display screen corresponding to the test board 6 is observed. After the test is completed, the pushing assembly 2 drives the test interface 5 upwards, causing the pushing member 8 to drive the driving assembly 7, which in turn causes the transmission device to transport the next set of placement assemblies 4 containing untested thermistors to below the test interface 5. This allows for the testing of the next set of thermistors, improving the continuity of the device and increasing testing efficiency.
[0018] Example 2, as Figure 2 - Figure 9 As shown. The conveying device includes a drive roller 31 and a driven roller 32 rotatably connected inside the frame 1. The drive roller 31 and the driven roller 32 are driven by a conveyor belt 33. The placement component 4 is fixedly connected to the conveyor belt. The rotation of the drive roller 31 and the driven roller 32 can drive the conveyor belt 33 to move, which facilitates the movement of the placement component 4.
[0019] The frame 1 is internally fixedly connected to a support plate 34 for supporting the conveyor belt 33.
[0020] The drive assembly 7 includes two sets of rotating shafts 71, a synchronous belt 72, and a rotating rod 73. The two sets of rotating shafts 71 are fixedly connected to the driving roller 31 and the driven roller 32, respectively. A first synchronous pulley 74 is fixedly connected to the outer surface of each set of rotating shafts 71. The rotating rod 73 is rotatably connected to one side of the frame 1 through a bearing seat. A second synchronous pulley 75 is fixedly connected to the outer surface of the rotating rod 73. The synchronous belt 72 is driven by the first synchronous pulley 74 and the second synchronous pulley 75. A rotating assembly 76 is fixedly connected to the side of the rotating rod 73 away from the frame 1. The rotating assembly 76 is configured to cooperate with the pusher 8. The rotating assembly 76 includes a connecting plate 761 fixedly connected to the rotating rod 73. A placement groove 762 is opened on one side of the connecting plate 761. A pawl 763 is rotatably connected to the inside of the placement groove 762 through a pin. An installation ring 765 is rotatably connected to the outer surface of the rotating rod 73 through the rotating assembly 764. A connecting ring 766 is fixedly connected to one side of the installation ring 765. A pawl 763 is fixedly connected to the other side of the connecting ring 766 to cooperate with the pusher 8. The device includes a hollow gear 767 with an inner wall that engages with a ratchet groove 768. The push assembly 2 moves the test interface 5 upwards, causing the pusher 8 to rotate the rotating assembly 76. The ratchet 763 and ratchet groove 768 engage to rotate the second synchronous wheel 75 on the rotating rod 73. This, in turn, causes the rotating shaft 71, equipped with the first synchronous wheel 74, to rotate via the synchronous belt 72. This, in turn, causes the drive roller 31 and driven roller 32 to rotate. The conveyor belt transports the next assembly 4, containing untested thermistors, to the area below the test interface 5, allowing for the next thermistor test. Because of the ratchet 763 and ratchet groove 768, the rotating rod 73 does not rotate when the drive assembly 22 moves the pusher 8 downwards, improving the continuity of the device and increasing testing efficiency. The pusher 8 can rotate the hollow gear 767, but the ratchet groove 768 and ratchet 763 allow the rotating rod 73 to rotate only in one direction.
[0021] The rotating component 764 is a ball bearing. The inner ring of the ball bearing is fixedly connected to the outer surface of the rotating rod 73, and the outer ring of the ball bearing is fixedly connected to the mounting ring 765.
[0022] A baffle is fixedly connected to one side of the empty sleeve gear 767.
[0023] The pusher 8 includes a connecting plate 81 fixedly connected to the pusher assembly 2. A placement seat 82 is fixedly connected to one side of the connecting plate 81. Two sets of placement frames 83 are fixedly connected inside the placement seat 82. A sprocket 84 that meshes with the empty gear 767 is connected between the two sets of placement frames 83. The empty gear 767 can be rotated by the up and down movement of the sprocket 84.
[0024] The pushing component 2 includes a connecting frame 21, on which a driving component 22 is provided. One end of the driving component 22 is fixedly connected to a limiting frame 23 that cooperates with the fixing component 9. A connecting rod 24 is fixedly connected to the limiting frame 23. The other end of the connecting rod 24 is fixedly connected to the test interface 5. A connecting plate 81 is fixedly connected to the limiting frame 23. A test plate 6 is fixedly connected to one side of the limiting frame 23. The driving component 22 is an electric push rod. The connecting frame 21 has mounting holes for mounting the electric push rod.
[0025] The placement component 4 includes a placement frame 41 fixedly connected to the conveyor belt 33. The placement frame 41 has sliding grooves 42 on both sides, and the inner walls of the placement frame 83 have placement slots 43 on both sides. The two sets of placement slots 43 are respectively connected to the two sets of sliding grooves 42. A sliding block 44 is slidably connected inside the sliding groove 42. A fixing plate 45 is fixedly connected to one side of the sliding block 44. The fixing plate 45 is located inside the placement slot 43. A first spring 46 is sleeved on the sliding block 44, and both ends of the first spring 46 are fixedly connected to the fixing plate 45 and the inner wall of the placement slot 43, respectively. The fixing component 9 can push the two sets of sliding blocks 44, causing the two sets of fixing plates 45 to fix the thermistor, preventing displacement during insertion. After testing, the fixing component 9 no longer limits the sliding block 44. When the conveyor belt moves the placement frame 41 so that its opening faces downwards, the thermistor falls off, completing the unloading process.
[0026] Guide grooves 10 are provided on both sides of the frame 1. The fixing component 9 includes a guide post 91 slidably connected inside the guide groove 10. A limiting block 92 that cooperates with the limiting frame 23 is fixedly connected to one side of the guide post 91. The limiting block 92 has a trapezoidal structure. A second spring 93 is sleeved on the guide post 91. The two sides of the second spring 93 are fixedly connected to the limiting block 92 and the frame 1, respectively. The fixing component 9 cooperates with the placement component 4 located below the test interface 5. When the limiting frame 23 is pushed down by the driving component 22, the limiting block 92 is pushed, causing the guide post 91 to move, thereby pushing the sliding block 44 on the placement frame 41, so that the fixing plate 45 fixes the thermistor. When the limiting frame 23 no longer limits it, the guide post 91 no longer limits the sliding block 44 due to the setting of the second spring 93.
[0027] Working principle: When a thermistor needs to be tested, the thermistor is placed inside the placement assembly 4. The drive unit 22 is activated to move the test interface 5 and the test board 6 downwards, connecting them to the thermistor located below the test interface 5. During the test, the data on the corresponding display screen of the test board 6 is observed. After the test is completed, the drive unit 22 is activated again to move the test interface 5 upwards, causing the pusher 8 to rotate the rotating assembly 76. The second synchronous wheel 75 on the rotating rod 73 rotates through the cooperation of the pawl 763 and the ratchet groove 768, thereby causing the rotating shaft 71 with the first synchronous wheel 74 to rotate through the synchronous belt 72, which in turn causes the driving roller 31 and the driven roller 32 to rotate. The conveyor belt transports the next placement assembly 4 containing the untested thermistors to below the test interface 5, allowing the next group of thermistors to be tested. Due to the presence of the pawl 763 and the ratchet groove 768, the rotating rod 73 does not rotate when the drive unit 22 moves the pusher 8 downwards, resulting in better continuity of the device and improved testing efficiency.
[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.
Claims
1. A thermistor testing device, characterized in that: The device includes a frame (1) and a push assembly (2). The frame (1) is provided with a conveying device (3). The conveying device (3) is connected to multiple sets of placement assemblies (4) for placing thermistors. The push assembly (2) is equipped with a test interface (5). A test board (6) is connected to one side of the test interface (5). A drive assembly (7) for driving the transmission device is provided on one side of the frame (1). A pusher (8) for driving the drive assembly (7) is connected to the push assembly (2). Fixing assemblies (9) for fixing the placement assemblies (4) are provided on both sides of the frame (1).
2. The thermistor testing device according to claim 1, characterized in that: The transmission device includes an active roller (31) and a driven roller (32) rotatably connected inside the frame (1). The active roller (31) and the driven roller (32) are driven by a conveyor belt (33). The placement component (4) is fixedly connected to the conveyor belt.
3. The thermistor testing device according to claim 2, characterized in that: The drive assembly (7) includes two sets of rotating shafts (71), a synchronous belt (72), and a rotating rod (73). The two sets of rotating shafts (71) are fixedly connected to the driving roller (31) and the driven roller (32), respectively. The outer surfaces of the two sets of rotating shafts (71) are fixedly connected to the first synchronous pulley (74). The rotating rod (73) is rotatably connected to one side of the frame (1) through a bearing seat. The outer surface of the rotating rod (73) is fixedly connected to the second synchronous pulley (75). The synchronous belt (72) is driven and connected to the first synchronous pulley (74) and the second synchronous pulley (75). The rotating rod (73) is fixedly connected to a rotating assembly (76) on the side away from the frame (1). The rotating assembly (76) is configured to cooperate with the pusher (8).
4. The thermistor testing device according to claim 3, characterized in that: The rotating assembly (76) includes a connecting plate (761) fixedly connected to the rotating rod (73). A placement groove (762) is provided on one side of the connecting plate (761). A pawl (763) is rotatably connected inside the placement groove (762) via a pin. An installation ring (765) is rotatably connected to the outer surface of the rotating rod (73) via a rotating component (764). A connecting ring (766) is fixedly connected to one side of the installation ring (765). A hollow gear (767) that cooperates with the pusher (8) is fixedly connected to the other side of the connecting ring (766). The inner wall of the hollow gear (767) is provided with a ratchet groove (768) that cooperates with the pawl (763).
5. The thermistor testing device according to claim 4, characterized in that: The pusher (8) includes a connecting plate (81) fixedly connected to the pusher assembly (2). A placement seat (82) is fixedly connected to one side of the connecting plate (81). Two sets of placement frames (83) are fixedly connected inside the placement seat (82). A sprocket (84) that meshes with the empty sleeve gear (767) is connected between the two sets of placement frames (83).
6. The thermistor testing device according to claim 5, characterized in that: The pushing component (2) includes a connecting frame (21), a driving component (22) is provided on the connecting frame (21), one end of the driving component (22) is fixedly connected to a limiting frame (23) that cooperates with the fixing component (9), a connecting rod (24) is fixedly connected on the limiting frame (23), the other end of the connecting rod (24) is fixedly connected to the test interface (5), the connecting plate (81) is fixedly connected to the limiting frame (23), and the test plate (6) is fixedly connected to one side of the limiting frame (23).
7. The thermistor testing device according to claim 2, characterized in that: The placement component (4) includes a placement frame (41) fixedly connected to the conveyor belt (33). The placement frame (41) has a sliding groove (42) on both sides. The placement frame (83) has a placement slot (43) on both sides of its inner wall. The two sets of placement slots (43) are respectively connected to the two sets of sliding grooves (42). A sliding block (44) is slidably connected inside the sliding groove (42). A fixing plate (45) is fixedly connected to one side of the sliding block (44). The fixing plate (45) is located inside the placement slot (43). A first spring (46) is sleeved on the sliding block (44). The two ends of the first spring (46) are fixedly connected to the fixing plate (45) and the inner wall of the placement slot (43) respectively.
8. The thermistor testing device according to claim 6, characterized in that: The frame (1) has guide grooves (10) on both sides. The fixing component (9) includes a guide post (91) slidably connected inside the guide groove (10). A limiting block (92) that cooperates with the limiting frame (23) is fixedly connected to one side of the guide post (91). The limiting block (92) has a trapezoidal structure. A second spring (93) is sleeved on the guide post (91). The two sides of the second spring (93) are fixedly connected to the limiting block (92) and the frame (1) respectively.