Combination switch testing device

Abstract

The application discloses a kind of combination switch test devices, it is related to switch test technical field, wherein, combination switch test device includes rack, drive mechanism, first pressure mechanism, second pressure mechanism and product placement tooling, drive mechanism is installed on rack;First pressure mechanism is connected with drive mechanism transmission, and is equipped with first pressing head, for pressing the key to be measured;Second pressure mechanism is connected with drive mechanism transmission, and is equipped with second pressing head, second pressing head is extended along first direction and is arranged, for with the roller to be measured abuts and drives its rotation;Product placement tooling is set on rack, and it is located below first pressure mechanism and second pressure mechanism, for positioning the steering wheel combination switch to be measured;Drive mechanism is at least used to drive first pressure mechanism and second pressure mechanism along first direction translation and along second direction lifting.The technical scheme of the application can improve the test efficiency of the product provided with multiple operating components.

Description

Technical Field

[0001] This invention relates to the field of switch testing technology, and in particular to a combined switch testing device. Background Technology

[0002] With the development of automotive intelligence, the number of control components integrated into steering wheels, such as buttons and scroll wheels, is increasing. During steering wheel testing, it is usually necessary to perform performance tests on these components to ensure that their pressing force, rotational damping, signal stability, and durability meet design requirements. Currently, button and scroll wheel testing are generally performed independently using separate equipment, which not only occupies production line space but also affects testing efficiency. Summary of the Invention

[0003] The main objective of this invention is to provide a combined switch testing device, which aims to improve the testing efficiency of products with multiple operating components.

[0004] To achieve the above objectives, the present invention proposes a combined switch testing device, comprising: frame; The drive mechanism is mounted on the frame; The first pressure-applying mechanism is connected to the driving mechanism and is provided with a first pressing head for pressing the button to be tested; A second pressure-applying mechanism, driven by the driving mechanism, is provided with a second pressing head, which extends along a first direction and is used to abut against the roller to be tested and drive it to rotate; and The product placement fixture is set on the frame and located below the first pressure mechanism and the second pressure mechanism, and is used to position the steering wheel combination switch to be tested; The driving mechanism is at least used to drive the first pressure applying mechanism and the second pressure applying mechanism to translate along the first direction and to move up and down along the second direction, wherein the first direction and the second direction intersect.

[0005] According to some embodiments of this application, the first pressure-applying mechanism includes: The first support is connected to the drive mechanism; The first slide is slidably connected to the first support so as to be vertically adjustable relative to the first support along the second direction, and the first pressing head is connected to the first slide. A first elastic element acts on the first slide block to apply an elastic force downward in the second direction to the first slide block.

[0006] According to some embodiments of this application, the first pressing head includes a connecting component and an abutting component. The connecting component is connected to the first slide, and the abutting component is detachably connected to the connecting component. The abutting component is used to abut against the button to be tested.

[0007] According to some embodiments of this application, the connecting assembly includes a first connector, a second connector, and a pressure sensor. The first connector is connected to the first slide, and the pressure sensor is located between the first connector and the second connector along the second direction. Both ends of the pressure sensor are respectively connected to the first connector and the second connector. The abutment assembly is detachably connected to the second connector. And / or, the abutment assembly includes a fastener and an abutment connected together, the fastener being detachably connected to the connection assembly, and the abutment being configured as a flexible conductive head.

[0008] According to some embodiments of this application, the first pressure-applying mechanism further includes a counterweight block, which is detachably connected to the first slide block.

[0009] According to some embodiments of this application, the counterweight abuts against the first pressing head along the second direction.

[0010] According to some embodiments of this application, the first pressure-applying mechanism further includes a first connecting rod and a first guide block. The first guide block is disposed on the first support, the first connecting rod is connected to the first slide and passes through the first guide block, and the first elastic member is sleeved on the first connecting rod and sandwiched between the first slide and the first guide block. And / or, the first support is provided with two first limiting portions arranged along the second direction, and the first slide is provided with a first protrusion, the first protrusion being movably disposed between the two first limiting portions.

[0011] According to some embodiments of this application, the second pressure-applying mechanism includes: The second support is connected to the drive mechanism; The second slide is slidably connected to the second support and can move up and down relative to the second support in the second direction; the second pressing head is disposed on the second slide. The second elastic element acts on the second slide or the second pressing head to apply an elastic force downward along the second direction, so as to drive the second pressing head to press against the roller to be tested.

[0012] According to some embodiments of this application, the second pressing head is rotatably connected to the second slide, and the rotation axis of the second pressing head is parallel to the first direction.

[0013] According to some embodiments of this application, the second pressing head is provided with an arc-shaped hole, the center of which is concentric with the rotation axis of the second pressing head. The second pressing mechanism further includes a guide member, which passes through the arc-shaped hole and is connected to the second slide.

[0014] According to some embodiments of this application, the second pressing head includes a pressing head body and a friction pad connected together, the pressing head body is connected to the second slide, and the friction pad is used to abut against the roller to be tested; And / or, the second pressure-applying mechanism further includes a second connecting rod and a second guide block, the second guide block being disposed on the second support, the second connecting rod being connected to the second slide and passing through the second guide block; the second elastic element being sleeved on the second connecting rod and sandwiched between the second slide and the second guide block; And / or, the second support is provided with two second limiting portions arranged along the second direction, and the second slide is provided with a second protrusion, the second protrusion being movably disposed between the two second limiting portions.

[0015] According to some embodiments of this application, the combination switch testing device is provided with at least two sets of the first pressure-applying mechanisms; And / or, the combination switch testing device is provided with at least two sets of the second pressure applying mechanism; And / or, the combination switch testing device is provided with at least two sets of product placement fixtures.

[0016] According to some embodiments of this application, the combined switch testing device further includes an isolation box, the machine frame is mounted in the isolation box, and the control mechanism of the combined switch testing device is located outside the isolation box and electrically connected to the drive mechanism.

[0017] According to some embodiments of this application, the combined switch testing device further includes a temperature regulating mechanism for regulating the internal temperature of the isolation chamber.

[0018] The technical solution of this invention integrates button pressing tests and roller rotation tests onto the same testing platform, sharing a single drive mechanism and product positioning fixture. This enables centralized testing of multiple operating components on the product under test. This setup eliminates the need for multiple separate devices to test different operating components, reducing production line space requirements. Simultaneously, by using the same drive mechanism to apply actions to the button and roller respectively through the first and second pressure mechanisms, automated switching and collaborative operation of button pressing and roller rotation tests are achieved, shortening the testing cycle and improving production line testing efficiency. The shared drive mechanism and product placement fixture allow the product under test to complete multiple tests in a single clamping, reducing positioning deviations caused by multiple clampings, ensuring consistency of the testing benchmark, and thus improving the accuracy and reliability of the test results. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 A structural diagram of an embodiment of the combination switch testing device provided in this application; Figure 2 for Figure 1 The main view; Figure 3 A structural diagram showing the first pressure applying mechanism and the second pressure applying mechanism mounted on a mounting bracket in one embodiment of the combined switch testing device provided in this application; Figure 4 for Figure 3 A combined structural diagram of multiple primary pressure-applying mechanisms; Figure 5 A structural diagram of an embodiment of the first pressure-applying mechanism in the combination switchgear provided in this application; Figure 6 A structural diagram of the first pressure-applying mechanism equipped with a pressure sensor in the combination switchgear provided in this application; Figure 7 for Figure 3 A diagram showing the combined structure of multiple secondary pressure-applying mechanisms. Figure 8 This is a structural diagram of an embodiment of the second pressure-applying mechanism in the combination switchgear provided in this application; Figure 9 This is a schematic diagram showing the arrangement of multiple product placement fixtures in one embodiment of the combination switch device provided in this application.

[0021] Explanation of icon numbers: 100. Combination switch testing device; 10. Frame; 20. Drive mechanism; 21. First linear module; 22. Second linear module; 23. Third linear module; 24. Mounting bracket; 30. First pressure applying mechanism; 31. First pressing head; 311. Connecting assembly; 3111. First connecting member; 3112. Second connecting member; 3113. Pressure sensor; 312. Abutting assembly; 3121. Fixing member; 3122. Abutting member; 32. First support; 321. First limiting part; 33. First slide; 331. First protrusion; 332. First connecting rod; 34. First elastic element; 35. Counterweight; 36. First guide block; 40. Second pressure applying mechanism; 41. Second pressing head; 411. Pressing head body; 4111. Arc-shaped hole; 412. Friction pad; 42. Second support; 421. Second limiting part; 43. Second slide; 431. Second protrusion; 432. Second connecting rod; 44. Second elastic element; 45. Guide element; 46. Second guide block; 50. Product placement fixture; 51. Load-bearing component; X, first direction; Y, third direction; Z, second direction.

[0022] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0023] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0025] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0026] With the development of automotive intelligence, the number of control components integrated into steering wheels, such as buttons and scroll wheels, is increasing. During steering wheel testing, it is usually necessary to perform performance tests on these components to ensure that their pressing force, rotational damping, signal stability, and durability meet design requirements. Currently, button and scroll wheel testing are generally performed independently using separate equipment, which not only occupies production line space but also affects testing efficiency.

[0027] Based on the above considerations, the present invention proposes a combination switch testing device 100, which can improve the testing efficiency of products with multiple operating components.

[0028] Please refer to Figure 1 and Figure 2 In one embodiment of the present invention, the combination switch testing device 100 includes a frame 10, a drive mechanism 20, a first pressure mechanism 30, a second pressure mechanism 40, and a product placement fixture 50. The drive mechanism 20 is mounted on the frame 10. The first pressure mechanism 30 is drivenly connected to the drive mechanism 20 and is provided with a first pressing head 31 for pressing the button to be tested. The second pressure mechanism 40 is drivenly connected to the drive mechanism 20 and is provided with a second pressing head 41, which extends along the first direction X and is used to abut against the roller to be tested and drive it to rotate. The product placement fixture 50 is disposed on the frame 10 and located below the first pressure mechanism 30 and the second pressure mechanism 40, and is used to position the steering wheel combination switch to be tested. The drive mechanism 20 is at least used to drive the first pressure mechanism 30 and the second pressure mechanism 40 to translate along the first direction X and to move up and down along the second direction Z, where the first direction X and the second direction Z intersect.

[0029] For ease of explanation, in this embodiment, the first direction X is parallel to the horizontal plane, and the second direction Z is vertical. Of course, in other embodiments, the first direction X and the second direction Z can also be set to other intersecting angles (e.g., tilted or interchanged directions) depending on the product arrangement. This embodiment uses horizontal and vertical as examples only for ease of understanding and does not constitute a limitation on the scope of protection of this invention.

[0030] The frame 10 serves as the supporting base for the combination switch testing device 100, and is used to install and connect other components, providing stable support and ensuring that each moving part maintains precise positioning and repeatability during operation.

[0031] The drive mechanism 20 includes at least a first linear module 21 and a second linear module 22. The first linear module 21 is mounted on the frame 10, and the second linear module 22 is slidably connected to the output end of the first linear module 21. A first pressure mechanism 30 and a second pressure mechanism 40 are mounted side by side on the output end of the second linear module 22. The first linear module 21 can drive the second linear module 22 to slide the first pressure mechanism 30 and the second pressure mechanism 40 along the first direction X. The second linear module 22 can drive the first pressure mechanism 30 and the second pressure mechanism 40 to rise and fall along the second direction Z. In addition, the drive mechanism 20 may also include a third linear module 23. The third linear module 23 may be disposed between the first linear module 21 and the second linear module 22, or the first linear module 21 may be connected to the output end of the third linear module 23. The third linear module 23 may be used to drive the structure connected to its output end to move the first pressure mechanism 30 and the second pressure mechanism 40 along the third direction Y, so that the first pressure mechanism 30 and the second pressure mechanism 40 have three-dimensional spatial movement capabilities, thereby being able to reach any button or roller position on the product placement fixture 50, improving applicability.

[0032] Please refer to Figure 1 In some embodiments, the drive mechanism 20 further includes a mounting bracket 24, which is mounted on the output end of the second linear module 22, and the first pressure mechanism 30 and the second pressure mechanism 40 are arranged side by side on the mounting bracket 24.

[0033] The drive mechanism 20 can achieve transmission through a servo motor in conjunction with a high-precision ball screw and guide rail pair. The control system outputs commands according to the preset test path to precisely control the translation stroke and speed of the first linear module 21 and the lifting stroke and acceleration of the second linear module 22, so as to synchronously or independently transport the first pressure applying mechanism 30 and the second pressure applying mechanism 40 to the target test position. Alternatively, the drive mechanism 20 can also achieve transmission through cylinders, such as rodless cylinders or slide cylinders as the first linear drive and the second linear drive, respectively.

[0034] The first pressing mechanism 30 is equipped with a first pressing head 31, which is used to move up and down under the drive mechanism 20 to apply pressure to the button to be tested on the product placement fixture 50 below. The second pressing mechanism 40 is installed at the output end of the drive mechanism 20 and arranged side by side with the first pressing mechanism 30. It is equipped with a second pressing head 41 extending along the first direction X. The second pressing head 41 is used to move up and down under the drive mechanism 20 to press the roller to be tested, and moves horizontally under the drive mechanism 20, driving the roller to rotate through the friction between it and the circumferential surface of the roller. Optionally, a friction contact part can be provided at the end of the second pressing head 41, such as a silicone block, felt, or a metal pressure head with knurled surface, to increase the static friction between the second pressing head 41 and the roller to be tested and reduce the risk of slippage between the second pressing mechanism 40 and the roller to be tested.

[0035] The product placement fixture 50 serves as the positioning and fixing base for the product under test, ensuring that the product under test is fixed in the combination switch testing device 100 according to a preset orientation. This can be achieved by: a limiting groove adapted to the product being provided on the product placement fixture 50, placing at least a portion of the product's structure within the limiting groove; or a positioning pin on the product placement fixture 50 engaging with pre-drilled positioning holes on the product to achieve positioning; or by using bolt fastening, clamping structures, or pressure-pressing structures to fix the product.

[0036] Please refer to Figure 9 In some embodiments, the bearing fixture includes two bearing parts 51 arranged opposite to each other. The two bearing parts 51 are respectively used to support the two ends of the product to be tested. With this arrangement, there is no need to set up a large bearing fixture. It is only necessary to adjust the distance between the two bearing parts 51 to adapt to products of different sizes.

[0037] When a press test is required on a button or scroll wheel, the drive mechanism 20 moves the first pressing head 31 above the button according to a preset path, and then presses the button down using a lifting motion. When a rolling test is required on a scroll wheel, the second pressing head 41 is moved to the position of the scroll wheel, and then lowered to press against the surface of the scroll wheel. The second pressing mechanism 40 is then driven to move along the first direction (X) to rotate the scroll wheel. Through the three-dimensional spatial displacement of the drive mechanism 20, multiple buttons and scroll wheels at different positions on the product can be tested sequentially.

[0038] In other words, the technical solution of this application integrates button pressing tests and roller rotation tests onto the same testing platform, sharing a single drive mechanism 20 and product positioning fixture, thus achieving centralized testing of multiple operating components on the steering wheel combination switch. This setup eliminates the need for multiple separate devices to test different operating components, reducing production line space requirements. Simultaneously, by using the same drive mechanism 20 to drive the first pressure mechanism 30 and the second pressure mechanism 40 to apply actions to the button and roller respectively, automated switching and collaborative operation of button pressing tests and roller rotation tests can be achieved, shortening the testing cycle and improving production line testing efficiency. Sharing the drive mechanism 20 and product placement fixture 50 allows the product under test to complete multiple tests in a single clamping, reducing positioning deviations caused by multiple clampings, ensuring the consistency of the testing benchmark, and thereby improving the accuracy and reliability of the test results.

[0039] Please refer to Figure 5 and Figure 6 According to some embodiments of this application, the first pressure-applying mechanism 30 includes a first support 32, a first slide 33, and a first elastic member 34. The first support 32 is connected to the drive mechanism 20. The first slide 33 is slidably connected to the first support 32 so as to be vertically and vertically disposed relative to the first support 32 along the second direction Z. The first pressing head 31 is connected to the first slide 33. The first elastic member 34 acts on the first slide 33 to apply an elastic force downward along the second direction Z to the first slide 33.

[0040] In this embodiment, the first support 32 is fixedly installed at the output end of the drive mechanism 20 and moves in space with the drive mechanism 20. The first slide block 33 is slidably engaged with the first support 32 via a linear guide rail or guide post, and can move up and down relative to the first support 32 along the second direction Z. The first pressing head 31 is fixedly connected to the lower end of the first slide block 33 and moves up and down together with the first slide block 33.

[0041] The first elastic element 34 is disposed between the first support 32 and the first slide 33, with one end acting on the first support 32 and the other end acting on the first slide 33. The first elastic element 34 can be in the form of a compression spring, a disc spring, or a gas spring. In the free state, the first elastic element 34 pushes the first slide 33 to the lower limit position relative to the first support 32, that is, the first pressing head 31 extends to the lowest position. When the first pressing head 31 contacts the surface of the button to be tested, the drive mechanism 20 continues to drive the first support 32 to descend. The upward reaction force on the first slide 33 overcomes the elastic force of the first elastic element 34, causing the first slide 33 to slide upward relative to the first support 32. The first elastic element 34 is further compressed, thereby converting the pressing force into the compression of the elastic element, realizing flexible pressing of the button and avoiding rigid impact damage to the button or the first pressing head 31. By selecting first elastic elements 34 with different stiffnesses, the magnitude of the pressing test force can be adjusted to meet the testing requirements of buttons of different specifications. In addition, a limiting structure can be provided between the first support 32 and the first slide 33 to limit the lifting range of the first slide 33 and prevent the key from being damaged by overpressure due to malfunction of the drive mechanism 20.

[0042] Please refer to Figure 5 and Figure 6 According to some embodiments of this application, the first pressing head 31 includes a connecting component 311 and an abutting component 312. The connecting component 311 is connected to the first slide 33, and the abutting component 312 is detachably connected to the connecting component 311. The abutting component 312 is used to abut against the button to be tested.

[0043] In this embodiment, the connecting component 311 is fixedly connected to the first slide 33, serving as the mounting interface between the entire first pressing head 31 and other parts of the first pressing mechanism 30. The abutting component 312 is fixed to the lower end of the connecting component 311, and its bottom surface is the pressing working surface, used to directly contact the surface of the button to be tested and apply pressing force. The pressing working surface of the abutting component 312 can be designed in various forms such as a flat surface, an arc surface, or a contoured surface to adapt to the top contour of different buttons, ensuring that the working surface and the button surface are fully in contact during the pressing process, and avoiding stress concentration caused by point contact or line contact that could damage the button surface.

[0044] The detachable connection between the abutment component 312 and the connecting component 311 can be, but is not limited to, at least one of the following: threaded connection, snap-fit ​​connection, or magnetic connection. This detachable connection allows the abutment component 312 to be replaced individually after wear, without needing to replace the connecting component 311 or the entire first pressing head 31. Furthermore, depending on the shape and size of the button under test, a suitable abutment component 312 can be replaced without replacing the entire first pressing head 31 or adjusting the entire first pressure mechanism 30, thus improving the versatility and adaptability of the testing device.

[0045] The contact component 312 can be made of hard materials such as metal or plastic to provide rigid pressing, or it can be made of elastic materials with a certain degree of hardness such as polyurethane or nylon to provide appropriate flexible contact and reduce the risk of wear on the button under test.

[0046] Please refer to Figure 6 According to some embodiments of this application, the connecting component 311 includes a first connecting member 3111, a second connecting member 3112, and a pressure sensor 3113. The first connecting member 3111 is connected to the first slide 33. The pressure sensor 3113 is located between the first connecting member 3111 and the second connecting member 3112 along the second direction Z, and both ends of the pressure sensor 3113 are respectively connected to the first connecting member 3111 and the second connecting member 3112. The abutment component 312 is detachably connected to the second connecting member 3112.

[0047] In this embodiment, the first connector 3111 is fixed to the lower end of the first slide block 33, serving as the mounting interface for the pressure sensor 3113. The second connector 3112 is connected to the lower interface of the pressure sensor 3113 and serves as the supporting base for the abutment assembly 312. The pressure sensor 3113 and the first connector 3111 can be connected by means of threaded connection or screw fastening, and the pressure sensor 3113 and the second connector 3112 can also be connected by means of threaded connection or screw fastening.

[0048] During button testing, the drive mechanism 20 lowers the first support 32, causing the contact component 312 to contact the button surface and receive an upward reaction force. This force is transmitted through the contact component 312 to the second connector 3112, and then from the second connector 3112 to the pressure sensor 3113. The pressure sensor 3113 can sense the magnitude of the pressing force and output an electrical signal corresponding to the pressing force to the control system. As the drive mechanism 20 continues to descend, the first elastic element 34 is compressed, and the pressing force gradually increases. The pressure sensor 3113 continuously collects the force value changes throughout the pressing process. Based on this, the control system obtains the button conduction force, rebound force, and force fluctuation curve to determine whether the button performance is qualified.

[0049] The pressure sensor 3113 is set independently of the first elastic element 34 and directly measures the actual pressure applied to the button. It is not affected by the stiffness drift or frictional resistance of the first elastic element 34, thus ensuring measurement accuracy and long-term stability.

[0050] In some embodiments, the combination switch testing device 100 is equipped with an isolation chamber serving as a high-temperature test chamber, requiring testing of the product under test in different temperature environments. During testing, the distance the first pressing mechanism 30 equipped with a pressure sensor 3113 needs to move downwards under the required pressing force can be tested first at room temperature. Then, the first pressing heads 31 of the other first pressing mechanisms 30 without pressure sensors 3113 are adjusted to the same height as the first pressing heads 31 equipped with pressure sensors 3113. This allows the drive mechanism 20 to drive each first pressing mechanism 30 downwards by the same distance, ensuring consistent pressing force on each button under test from each first pressing mechanism 30. Alternatively, to avoid damage to the pressure sensor 3113 under high or low temperature conditions, the pressure sensor 3113 can be removed after measuring the required downward movement at room temperature, and the first pressing heads 31 without pressure sensors 3113 can be replaced.

[0051] Please refer to Figure 5 and Figure 6 According to some embodiments of this application, the abutment component 312 includes a fixing member 3121 and an abutment member 3122 connected to each other. The fixing member 3121 is detachably connected to the connecting component 311, and the abutment member 3122 is configured as a flexible conductive head.

[0052] In this embodiment, the abutment component 312 includes a fixing member 3121 and an abutment member 3122 connected together. The fixing member 3121 serves as a connection structure between the abutment component 312 and the connecting component 311, and its upper end is detachably connected to the second connecting member 3112. The lower end of the fixing member 3121 is connected to the abutment member 3122. The abutment member 3122 and the fixing member 3121 can be fixedly connected by means of bonding, hot pressing, or insert injection molding to ensure the reliability of the connection.

[0053] The contact element 3122 is configured as a flexible conductive voltage head, made of a flexible material with conductive properties, such as silver fiber conductive fabric, conductive silicone, or conductive rubber. The working surface of the flexible conductive voltage head is used to directly contact the surface of the button to be tested. During the pressing process, the flexible conductive voltage head can generate a small amount of elastic deformation, adaptively conforming to the microscopic contour of the button surface, thereby simulating the tactile sensation of pressing with a real finger, while avoiding scratches, indentations, or coating damage to the button surface caused by rigid contact.

[0054] During the test, the flexible conductive voltage head also has a conductive function. When the pressure head presses the button, the flexible conductive voltage head contacts the conductive contacts or conductive film on the surface of the button. The on / off signal of the button is transmitted to the control system through the voltage head via the fixing component 3121 and the connecting component 311. This enables the simultaneous completion of button pressing pressure detection and electrical continuity performance detection, and ensures that the pressing pressure application point and the signal acquisition point are located at the same position, improving the accuracy and consistency of signal detection.

[0055] According to some embodiments of this application, the voltage conduction head is configured as a silver fiber voltage conduction head.

[0056] In this embodiment, the flexible conductive voltage head is made of silver fiber conductive fabric, which has good conductivity, softness, and wear resistance, and can maintain stable conductivity and shape recovery ability during repeated pressing. The silver fiber conductive voltage head has a soft touch similar to human fingers, which can effectively protect the button surface during testing. The pressure head shape of the abutment 3122 can be set to a flat surface, a curved surface, or a contoured surface according to the surface morphology of the button to be tested to ensure good contact.

[0057] Please refer to Figure 4 and Figure 5 According to some embodiments of this application, the first pressure-applying mechanism 30 further includes a counterweight 35, which is detachably connected to the first slide block 33.

[0058] In this embodiment, the counterweight 35 is mounted on the first slide 33 and rises and falls together with the first slide 33. The counterweight 35 provides downward pressure to the first pressing head 31 through its own gravity. This downward pressure is transmitted to the first pressing head 31 through the first slide 33 and finally acts on the surface of the button to be tested. The counterweight 35 adopts a detachable connection method so that counterweights of different masses can be replaced according to different testing requirements, thereby adjusting the basic load force value in the pressing test. The detachable connection method between the counterweight 35 and the first slide 33 may include, but is not limited to, threaded connection, quick-release connection, or magnetic connection.

[0059] When the button under test has a large actuation force, and the elastic force of the first elastic element 34 is insufficient to provide the required actuation force, a counterweight 35 is added to increase the static pressure on the button. This allows the first pressing head 31 to provide sufficient downward force after contacting the button to meet the test requirements. Simultaneously, the constant gravity provided by the counterweight 35 reduces the compression required by the first elastic element 34, which helps improve the service life and test stability of the first elastic element 34. The counterweight 35 can be configured as multiple independent blocks of different mass specifications. One or more of these blocks can be selected and stacked on the first slide block 33 according to actual test requirements to adjust the actuation force. The counterweight 35 can be made of high-density materials such as steel or tungsten alloy, providing a large mass in a small volume and reducing the space occupied during installation.

[0060] Please refer to Figure 5 and Figure 6 According to some embodiments of this application, the counterweight 35 abuts against the first pressing head 31 along the second direction Z.

[0061] In this embodiment, the counterweight 35 is mounted on the first slide 33, and its lower end face abuts against the first pressing head 31 along the second direction Z. When the first pressing head 31 contacts the button to be tested, the gravity of the counterweight 35 is continuously transmitted to the first pressing head 31 and then acts on the button surface, providing stable static pressure for button testing. This ensures that as the drive mechanism 20 drives the first support 32 to continue to descend, the counterweight 35 remains in contact with the first pressing head 31.

[0062] Please refer to Figure 5 and Figure 6 According to some embodiments of this application, the first pressure-applying mechanism 30 further includes a first connecting rod 332 and a first guide block 36. The first guide block 36 is disposed on the first support 32. The first connecting rod 332 is connected to the first slide block 33 and passes through the first guide block 36. The first elastic member 34 is sleeved on the first connecting rod 332 and sandwiched between the first slide block 33 and the first guide block 36.

[0063] In this embodiment, the first guide block 36 is fixedly mounted on the first support 32. One end of the first connecting rod 332 is fixedly connected to the first slide block 33, and the other end passes through the first guide block 36 and can slide relative to the first guide block 36 along the first direction X. The first guide block 36 provides guidance for the first connecting rod 332, ensuring the straightness and stability of the lifting and lowering movement of the first slide block 33 relative to the first support 32.

[0064] The first elastic element 34 is sleeved on the outer periphery of the first connecting rod 332 and sandwiched between the first slide block 33 and the first guide block 36. One end of the first elastic element 34 abuts against the lower end face of the first slide block 33, and the other end abuts against the upper end face of the first guide block 36. In the free state, the first elastic element 34 pushes the first slide block 33 and the first pressing head 31 to the lower limit position relative to the first support 32. When the drive mechanism 20 drives the first support 32 to descend until the first pressing head 31 contacts the surface of the roller to be tested, the first support 32 and the first guide block 36 continue to descend, compressing the first elastic element 34. The elastic reaction force generated by the first elastic element 34 is transmitted to the first pressing head 31 through the first slide block 33, so that it presses against the roller to be tested with a stable elastic pressure.

[0065] By sleeved on the first elastic element 34 and clamped between the first slide block 33 and the first guide block 36, the transmission path of the elastic force can be ensured to be consistent with the lifting and lowering direction of the first slide block 33, thus avoiding the first elastic element 34 from deflecting during compression. This is beneficial to improving the overall stability and reliability of the first pressing mechanism 30 and making the overall structure compact.

[0066] Please refer to Figure 5 and Figure 6 According to some embodiments of this application, the first support 32 is provided with two first limiting portions 321 arranged along the second direction Z, and the first slide 33 is provided with a first protrusion 331, which is movably disposed between the two first limiting portions 321.

[0067] In this embodiment, two first limiting portions 321 are arranged at intervals along the second direction Z on the first support 32. A first protrusion 331 on the first slide 33 is located between the two first limiting portions 321 and can rise and fall together with the first slide 33. When the first slide 33 rises and falls relative to the first support 32, the first protrusion 331 moves within the space between the two first limiting portions 321. When the first protrusion 331 abuts against the upper first limiting portion 321, it restricts the first slide 33 from continuing to move upward, forming the upper limit of the first slide 33; when the first protrusion 331 abuts against the lower first limiting portion 321, it restricts the first slide 33 from continuing to move downward, forming the lower limit of the first slide 33.

[0068] By cooperating with the two first limiting parts 321 and the first protrusion 331, the lifting stroke of the first slide 33 can be limited within a preset range. This prevents the first pressing head 31 from exceeding the safe stroke range due to improper stroke control of the drive mechanism 20 or excessive compression of the first elastic element 34, thereby preventing the button from being damaged by excessive pressing or preventing the first slide 33 from dislodging from the first support 32. The distance between the two first limiting parts 321 can be set according to the pressing stroke requirements of the button to be tested. The first protrusion 331 moves back and forth between the two first limiting parts 321 as the first slide 33 moves up and down, achieving mechanical hard limit protection.

[0069] Please refer to Figure 8 According to some embodiments of this application, the second pressure mechanism 40 includes a second support 42, a second slide 43, and a second elastic member 44; the second support 42 is connected to the drive mechanism 20; the second slide 43 is slidably connected to the second support 42 and can move up and down relative to the second support 42 in the second direction Z; the second pressing head 41 is disposed on the second slide 43; the second elastic member 44 acts on the second slide 43 or the second pressing head 41 to apply an elastic force downward in the second direction Z to drive the second pressing head 41 to press against the roller to be tested.

[0070] In this embodiment, the second support 42 is fixedly installed at the output end of the drive mechanism 20 and moves in space with the drive mechanism 20. The second slide 43 is slidably engaged with the second support 42 via a linear guide rail or guide post, and can move up and down relative to the second support 42 along the second direction Z. The second pressing head 41 is fixedly connected to the lower end of the second slide 43 and moves up and down together with the second slide 43.

[0071] The second elastic element 44 can be disposed between the second support 42 and the second slide 43, with one end acting on the second support 42 and the other end acting on the second slide 43. The second elastic element 44 can be in the form of a compression spring, a disc spring, or a gas spring. In the free state, the second elastic element 44 pushes the second slide 43 to the lower limit position relative to the second support 42, that is, the second pressing head 41 extends to the lowest position. When the second pressing head 41 contacts the surface of the button to be tested, the drive mechanism 20 continues to drive the second support 42 to descend. The force on the second slide 43 overcomes the elastic force of the second elastic element 44, causing the second slide 43 to slide upward relative to the second support 42. The second elastic element 44 is further compressed, thereby converting the pressing force into the compression amount of the second elastic element 44, realizing flexible pressing of the roller to be tested, and avoiding rigid impact damage to the roller to be tested or the second pressing head 41.

[0072] Alternatively, the second elastic element 44 can also be disposed between the second slide 43 and the second pressing head 41, with one end acting on the second slide 43 and the other end acting on the second pressing head 41, so as to directly apply elastic force to the second pressing head 41, which can also play the role of applying reaction force and elastic buffering.

[0073] By selecting second elastic elements 44 with different stiffnesses, the pressure on the roller under test can be adjusted. In addition, a limiting structure can be provided between the second support 42 and the second slide 43 to limit the lifting stroke range of the second slide 43 and prevent damage to the roller under test due to overpressure caused by malfunction of the drive mechanism 20.

[0074] Please refer to Figure 8 According to some embodiments of this application, the second pressing head 41 is rotatably connected to the second slide 43, and the rotation axis of the second pressing head 41 is parallel to the first direction X.

[0075] In this embodiment, the second pressing head 41 is rotatably connected to the second slide 43. At this time, the tilt angle of the second pressing head 41 is adjustable so as to make adaptive adjustments according to the actual tilt direction of the circumference of the roller to be tested, ensuring that the pressing surface and the roller surface maintain the maximum area of ​​contact, thereby improving the stability of friction transmission and the consistency of testing.

[0076] Please refer to Figure 8 In some embodiments, a locking structure can be provided at the rotating connection, such as using a locking screw to lock the second pressing head 41 after adjustment, ensuring that the pressing posture does not change during testing. In other embodiments, the second elastic element 44 is set as a torsion spring, which is located at the rotating connection between the second slide 43 and the second pressing head 41. One end of the torsion spring is fixed relative to the second slide 43, and the other end is fixed relative to the second pressing head 41. The torsion spring generates elastic torque through its own torsional deformation, which acts on the second pressing head 41 to keep its working end continuously pressed against the roller surface, providing stable elastic pressure.

[0077] Please refer to Figure 8 According to some embodiments of this application, the second pressing head 41 is provided with an arc-shaped hole 4111, the center of the arc-shaped hole 4111 is concentric with the rotation axis of the second pressing head 41, and the second pressing mechanism 40 further includes a guide member 45, which passes through the arc-shaped hole 4111 and is connected to the second slide 43.

[0078] In this embodiment, an arc-shaped hole 4111 is provided on the second pressing head 41, and the center of the arc of the arc-shaped hole 4111 coincides with the rotation axis of the second pressing head 41. The guide member 45 can be configured as a guide pin or a bolt, one end of which is fixedly installed on the second slide block 43, and the guide member 45 passes through the arc-shaped hole 4111 and slides in cooperation with the arc-shaped hole 4111.

[0079] When the second pressing head 41 rotates around the pivot, the guide member 45 slides relative to it along the arc-shaped hole 4111. The cooperation between the guide member 45 and the arc-shaped hole 4111 also provides guidance for the rotation of the second pressing head 41, improving the smoothness of the rotation process and the accuracy of position repeatability. Furthermore, the two ends of the arc-shaped hole 4111 constitute a mechanical limit for the rotation angle, restricting the rotation range of the second pressing head 41 within a preset angle and preventing it from rotating excessively or leaving the working position.

[0080] In addition, when the second pressing head 41 uses a torsion spring as an elastic element, the arc-shaped hole 4111 and the guide 45 can also limit the torsion angle range of the torsion spring, prevent the torsion spring from exceeding its elastic limit due to excessive torsion, and extend the service life of the torsion spring.

[0081] Please refer to Figure 8 According to some embodiments of this application, the second pressure applying mechanism 40 further includes a second connecting rod 432 and a second guide block 46. The second guide block 46 is disposed on the second support 42. The second connecting rod 432 is connected to the second slide 43 and passes through the second guide block 46. The second elastic member 44 is sleeved on the second connecting rod 432 and sandwiched between the second slide 43 and the second guide block 46.

[0082] In this embodiment, the second guide block 46 is fixedly mounted on the second support 42. One end of the second connecting rod 432 is fixedly connected to the second slide block 43, and the other end passes through the second guide block 46 and can slide relative to the second guide block 46 along the second direction Z. The second guide block 46 provides guidance for the second connecting rod 432, ensuring the straightness and stability of the vertical movement of the second slide block 43 relative to the second support 42.

[0083] The second elastic element 44 is sleeved on the outer periphery of the second connecting rod 432 and sandwiched between the second slide 43 and the second guide block 46. One end of the second elastic element 44 abuts against the lower end face of the second slide 43, and the other end abuts against the upper end face of the second guide block 46. In the free state, the second elastic element 44 pushes the second slide 43 and the second pressing head 41 to the lower limit position relative to the second support 42. When the drive mechanism 20 drives the second support 42 to descend until the second pressing head 41 contacts the surface of the roller to be tested, the second support 42 and the second guide block 46 continue to descend, compressing the second elastic element 44. The elastic reaction force generated by the second elastic element 44 is transmitted to the second pressing head 41 through the second slide 43, so that it presses against the roller to be tested with a stable elastic pressure.

[0084] By sleeved on the second connecting rod 432 and clamped between the second slide block 43 and the second guide block 46, the transmission path of the elastic force can be ensured to be consistent with the lifting and lowering direction of the second slide block 43, thus preventing the second elastic element 44 from deflecting during compression. This is beneficial to improving the overall stability and reliability of the second pressing mechanism 40 and making the overall structure compact.

[0085] Please refer to Figure 8 According to some embodiments of this application, the second support 42 is provided with two second limiting portions 421 arranged along the second direction Z, and the second slide 43 is provided with a second protrusion 431, which is movably disposed between the two second limiting portions 421.

[0086] In this embodiment, two second limiting portions 421 are arranged at intervals along the second direction Z on the second support 42. The second protrusion 431 on the second slide 43 is located between the two second limiting portions 421 and can rise and fall together with the second slide 43. When the second slide 43 rises and falls relative to the second support 42, the second protrusion 431 moves within the space between the two second limiting portions 421. When the second protrusion 431 abuts against the upper second limiting portion 421, it restricts the second slide 43 from continuing to move upward, forming the upper limit of the second slide 43; when the second protrusion 431 abuts against the lower second limiting portion 421, it restricts the second slide 43 from continuing to move downward, forming the lower limit of the second slide 43.

[0087] By cooperating with the two second limiting parts 421 and the second protrusion 431, the lifting stroke of the second slide 43 can be limited within a preset range. This prevents the second pressing head 41 from exceeding the safe stroke range due to improper stroke control of the drive mechanism 20 or excessive compression of the second elastic element 44, thereby preventing the button from being damaged by excessive pressing or preventing the second slide 43 from dislodging from the second support 42. The distance between the two second limiting parts 421 can be set according to the pressing stroke requirements of the button to be tested. The second protrusion 431 moves back and forth between the two second limiting parts 421 as the second slide 43 rises and falls, achieving mechanical hard limit protection.

[0088] Please refer to Figure 8 According to some embodiments of this application, the second pressing head 41 includes a pressing head body 411 and a friction pad 412 connected together. The pressing head body 411 is connected to the second slide 43, and the friction pad 412 is used to abut against the roller to be tested.

[0089] In this embodiment, the second pressing head 41 includes a pressing head body 411 and a friction pad 412 connected together. The pressing head body 411 serves as a mounting base for connecting with the second slide 43 and for fixing the friction pad 412. The pressing head body 411 can be made of metal materials such as aluminum alloy or stainless steel to ensure the overall structural strength. The pressing head body 411 can also be made of engineering plastics, ceramics or other materials.

[0090] A friction pad 412 is disposed on the working surface of the pressure head body 411 for direct contact with the circumferential surface of the roller to be tested. The friction pad 412 can be made of a flexible material, such as silicone, polyurethane, or nitrile rubber, allowing it to undergo slight elastic deformation when pressing against the roller, adaptively conforming to the roller's arc surface, increasing the actual contact area, and making the pressure distribution more uniform, thus preventing damage to the roller surface due to excessive local pressure. Furthermore, the friction pad 412 also ensures a high static friction force between the second pressure head 41 and the roller to be tested, reducing the risk of slippage. Additionally, anti-slip textures (such as mesh patterns or wavy patterns) can be provided on the surface of the friction pad 412 in contact with the roller to increase the coefficient of friction and ensure that slippage does not occur when driving the roller to rotate.

[0091] The friction pad 412 and the pressure head body 411 can be detachably connected, for example, by screw fastening, slot embedding, or adhesive bonding, so that the friction pad 412 can be replaced separately after wear without replacing the entire pressure head body 411. Additionally, friction pads 412 with different hardness and coefficients of friction can be selected for replacement based on the surface material of different rollers and testing requirements to optimize testing results. Of course, in some embodiments, the friction pad 412 and the pressure head body 411 can also be integrally molded, for example, by injection molding the friction pad 412 directly onto the working surface of the pressure head body 411.

[0092] Please refer to Figure 3 and Figure 4 According to some embodiments of this application, the combination switch testing device 100 is provided with at least two sets of first pressure applying mechanisms 30; with this configuration, multiple buttons on the same product under test can be pressed simultaneously, or multiple products under test can be tested for button performance at the same time, thereby improving testing efficiency.

[0093] Please refer to Figure 6 and Figure 7 According to some embodiments of this application, the combination switch testing device 100 is provided with at least two sets of second pressure applying mechanisms 40; with this configuration, multiple rollers on the same product under test can be rotated and tested simultaneously, or multiple products under test can be tested for roller performance at the same time, which can effectively improve testing efficiency.

[0094] Please refer to Figure 9According to some embodiments of this application, the combination switch testing device 100 is provided with at least two sets of product placement fixtures 50; with this configuration, multiple products to be tested can be positioned and fixed simultaneously, and the drive mechanism 20 can drive the first pressure mechanism 30 and the second pressure mechanism 40 to switch between different fixtures, or multiple sets of the first pressure mechanism 30 and the second pressure mechanism 40 can be set to simultaneously perform button pressing and roller rotation tests on multiple products, thereby improving the efficiency of batch testing.

[0095] According to some embodiments of this application, the combination switch testing device 100 further includes an isolation box, the frame 10 is disposed in the isolation box, and the control mechanism of the combination switch testing device 100 is disposed outside the isolation box and electrically connected to the drive mechanism 20.

[0096] In this embodiment, the isolation box encloses the frame 10 and the moving parts such as the drive mechanism 20, the first pressure mechanism 30, the second pressure mechanism 40 and the product placement fixture 50 disposed on the frame 10 within its internal space, so as to protect the moving parts and the testing station and reduce the risk of interference during the testing process.

[0097] The control mechanism of the combination switch testing device 100 is located outside the isolation chamber and is electrically connected to the internal drive mechanism 20 and various sensing elements via cables or wireless communication. The control mechanism of the combination switch testing device 100 includes a control system, a human-machine interface, and a data processing unit. The control mechanism is located outside the high and low temperature test chamber and is electrically connected to the drive mechanism 20, various sensing elements, and product electrical interfaces inside the high and low temperature test chamber via cables.

[0098] According to some embodiments of this application, the combination switch testing device 100 further includes a temperature regulating mechanism for regulating the internal temperature of the isolation chamber.

[0099] In this embodiment, the isolation chamber can serve as a high and low temperature test chamber. The chamber is equipped with heating devices such as electric heating elements or a hot air circulation system, and may also include cooling devices such as compressor cooling or semiconductor cooling. It is also equipped with a temperature sensor and a temperature control module to control and regulate the internal temperature. This configuration allows for the provision of high-temperature, low-temperature, or alternating high- and low-temperature environmental conditions to simulate the operation of a steering wheel combination switch under different temperature conditions, thereby verifying the mechanical performance, electrical signal stability, and durability of the buttons and rollers in different temperature environments. In some embodiments, the temperature range achievable by the isolation chamber includes at least -40°C to 85°C.

[0100] The driving mechanism 20, the first pressure applying mechanism 30, the second pressure applying mechanism 40, and the product placement fixture 50, among other mechanical components, are all housed inside the high and low temperature test chamber, enabling them to withstand the corresponding temperature range. After the product under test has stabilized at the temperature inside the high and low temperature test chamber, the driving mechanism 20 and the pressure applying mechanism perform test actions such as button pressing and roller rotation according to a preset test program. The control mechanism of the combination switch test device 100 is located outside the isolation chamber, eliminating the need for specialized high and low temperature resistant components and reducing equipment manufacturing costs. Furthermore, the external control mechanism facilitates daily operation, parameter adjustment, and maintenance.

[0101] In some embodiments, the frame 10 is made of metal, such as 304 stainless steel or aluminum alloy, to maintain good structural rigidity and dimensional stability under different temperature environments. This avoids deformation or decreased positioning accuracy of the frame 10 due to thermal expansion and contraction of materials, or softening at high temperatures and embrittlement at low temperatures, thereby ensuring the repeatability and consistency of the testing device over a wide temperature range. Additionally, a high-temperature resistant and corrosion-resistant coating can be sprayed onto the surface of the frame 10, such as silicone high-temperature resistant paint, epoxy resin anti-corrosion paint, polytetrafluoroethylene (Teflon) coating, or ceramic-based high-temperature resistant coating. These coatings effectively isolate air and moisture in high-temperature environments, preventing oxidation and rust on the surface of the frame 10. They also maintain good adhesion during temperature changes, are not prone to cracking or peeling, and contribute to improving the structural stability and durability of the frame 10.

[0102] The above are merely exemplary embodiments of the present invention and do not limit the scope of the patent of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of patent protection of the present invention.

Claims

1. A combination switch testing device, characterized in that, include: frame; The drive mechanism is mounted on the frame; The first pressure-applying mechanism is connected to the driving mechanism and is provided with a first pressing head for pressing the button to be tested; The second pressure mechanism is connected to the drive mechanism and is provided with a second pressing head. The second pressing head extends along the first direction and is used to abut against the roller to be tested and drive it to rotate. as well as The product placement fixture is set on the frame and located below the first pressure mechanism and the second pressure mechanism, and is used to position the steering wheel combination switch to be tested; The driving mechanism is at least used to drive the first pressure applying mechanism and the second pressure applying mechanism to translate along the first direction and to move up and down along the second direction, wherein the first direction and the second direction intersect.

2. The combination switch testing device as described in claim 1, characterized in that, The first pressure-applying mechanism includes: The first support is connected to the drive mechanism; The first slide is slidably connected to the first support so as to be vertically adjustable relative to the first support along the second direction, and the first pressing head is connected to the first slide. A first elastic element acts on the first slide block to apply an elastic force downward in the second direction to the first slide block.

3. The combination switch testing device as described in claim 2, characterized in that, The first pressing head includes a connecting component and an abutting component. The connecting component is connected to the first slide, and the abutting component is detachably connected to the connecting component. The abutting component is used to abut against the button to be tested.

4. The combination switch testing device as described in claim 3, characterized in that, The connecting assembly includes a first connector, a second connector, and a pressure sensor. The first connector is connected to the first slide. The pressure sensor is located between the first connector and the second connector along the second direction, and both ends of the pressure sensor are respectively connected to the first connector and the second connector. The abutment assembly is detachably connected to the second connector. And / or, the abutment assembly includes a fastener and an abutment connected together, the fastener being detachably connected to the connection assembly, and the abutment being configured as a flexible conductive head.

5. The combination switch testing device as described in claim 2, characterized in that, The first pressure-applying mechanism also includes a counterweight, which is detachably connected to the first slide.

6. The combination switch testing device as described in claim 5, characterized in that, Along the second direction, the counterweight abuts against the first pressing head.

7. The combination switch testing device as described in claim 2, characterized in that, The first pressure-applying mechanism further includes a first connecting rod and a first guide block. The first guide block is disposed on the first support, the first connecting rod is connected to the first slide and passes through the first guide block, and the first elastic element is sleeved on the first connecting rod and sandwiched between the first slide and the first guide block. And / or, the first support is provided with two first limiting portions arranged along the second direction, and the first slide is provided with a first protrusion, the first protrusion being movably disposed between the two first limiting portions.

8. The combined switch testing device as described in claim 1, characterized in that, The second pressure-applying mechanism includes: The second support is connected to the drive mechanism; The second slide is slidably connected to the second support and can move up and down relative to the second support in the second direction; the second pressing head is disposed on the second slide. The second elastic element acts on the second slide or the second pressing head to apply an elastic force downward along the second direction, so as to drive the second pressing head to press against the roller to be tested.

9. The combination switch testing device as described in claim 8, characterized in that, The second pressing head is rotatably connected to the second slide, and the rotation axis of the second pressing head is parallel to the first direction.

10. The combination switch testing device as described in claim 9, characterized in that, The second pressing head is provided with an arc-shaped hole, the center of which is concentric with the rotation axis of the second pressing head. The second pressing mechanism also includes a guide member, which passes through the arc-shaped hole and is connected to the second slide.

11. The combination switch testing device as described in claim 8, characterized in that, The second pressing head includes a pressing head body and a friction pad connected together. The pressing head body is connected to the second slide, and the friction pad is used to abut against the roller to be tested. And / or, the second pressure-applying mechanism further includes a second connecting rod and a second guide block, the second guide block being disposed on the second support, the second connecting rod being connected to the second slide and passing through the second guide block; the second elastic element being sleeved on the second connecting rod and sandwiched between the second slide and the second guide block; And / or, the second support is provided with two second limiting portions arranged along the second direction, and the second slide is provided with a second protrusion, the second protrusion being movably disposed between the two second limiting portions.

12. The combination switch testing device as described in any one of claims 1 to 11, characterized in that, The combined switch testing device is equipped with at least two sets of the first pressure applying mechanism; And / or, the combination switch testing device is provided with at least two sets of the second pressure applying mechanism; And / or, the combination switch testing device is provided with at least two sets of product placement fixtures.

13. The combination switch testing device as described in any one of claims 1 to 11, characterized in that, The combined switch testing device also includes an isolation box, in which the machine frame is mounted. The control mechanism of the combined switch testing device is located outside the isolation box and is electrically connected to the drive mechanism.

14. The combination switch testing device as described in claim 13, characterized in that, The combined switch testing device also includes a temperature regulating mechanism, which is used to regulate the internal temperature of the isolation box.

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