Device for testing durability of key switch of generator controller
By replacing the pneumatic contacts with electric contacts and pushing mechanisms, the problems of air source dependence and complicated operation in the durability test of the key switch of the generator controller are solved, and efficient durability tests with no noise and low vibration are achieved.
Patent Information
- Application Number
- CN202421861124.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-02
AI Technical Summary
The existing generator controller button switch durability test method requires the use of compressed air source, with limited number of pneumatic contacts and complicated operation.
Electric contacts are used instead of pneumatic contacts, motors are used as power source, and key switches are fixed through pushing mechanisms and buffer adjustment mechanisms to simplify the operation process.
No need to be equipped with a compressed air source, multiple electric contacts can be turned on at the same time to reduce noise and vibration, making it simple and reliable to operate.
Smart Images
Figure CN223091497U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technology of durability test for key switches of generator controllers, and particularly to a durability test device for key switches of generator controllers. Background Art
[0002] Generally, several key switches are arranged on the panel of a generator controller. The operating parameters of the generator can be viewed through the key switches, or the operating parameters of the generator can be adjusted (see Figure 1 ). Since generators are usually installed and used in the wild or in harsh environments, the environment has a great impact on the controller. Therefore, after the generator controller is produced, it is necessary to test the durability of the key switches to ensure the reliability and durability of the long-term use of the key switches. The existing durability test method for key switches of generator controllers uses pneumatic contacts to touch the key switches. The key switches are touched thousands or tens of thousands of times by the pneumatic contacts, and then the contacts of the key switches are detected to confirm the reliability and durability of the contacts. During the specific test, the controller is fixed on a substrate. A fixed frame is arranged on the substrate, and several mutually perpendicular strip-shaped hole plates are arranged on the frame. The pneumatic contacts are fixed on the strip-shaped hole plates by bolts (see the attached Figure 2 , in the figure, A is the controller, a is the substrate, b is the L-shaped pressing block, c is the fixed frame, d is the strip-shaped hole plate, and e is the pneumatic contact). Since pneumatic contacts are used, a compressed air source needs to be equipped. Since the noise and vibration during the operation of the pneumatic contacts are relatively large, the number of simultaneously opened pneumatic contacts is limited (usually not exceeding three). When the number of key switches arranged on the controller exceeds three, multiple tests are required. In addition, since the L-shaped pressing block is used to fix the controller on the substrate by bolts, the operation is relatively complicated. Moreover, using bolts to fix the pneumatic contacts on the strip-shaped hole plates further increases the complexity of the operation.
[0003] Obviously, the existing durability test method for key switches of generator controllers has problems such as the need to equip a compressed air source, the limited number of simultaneously opened pneumatic contacts, and relatively complicated operation. Summary of the Invention
[0004] In order to solve the problems existing in the existing durability test method for key switches of generator controllers, such as the need to equip a compressed air source, the limited number of simultaneously opened pneumatic contacts, and relatively complicated operation, the utility model provides a durability test device for key switches of generator controllers.
[0005] The durability test device for the key switch of the generator controller of the present utility model includes a substrate, an L-shaped baffle, a pushing mechanism, and an electric contact; the substrate is a rectangular plate; the L-shaped baffle is arranged at the upper left corner of the substrate, and its two sides are respectively parallel to the two right-angled sides of the substrate; there are four pushing mechanisms, two in a group, which are respectively arranged on the right side and the lower side of the substrate, and the front ends of the pushing rods all face the inner side of the substrate; there are several electric contacts, including a bracket, a main body, a contact rod, a return spring, a cam, and a motor; the bracket is a rectangular frame structure, and a hollow rectangular support plate is arranged at the bottom of the bracket; the main body is a cuboid, fixed directly above the bracket, and a circular through hole with a larger upper part and a smaller lower part is arranged at the vertical center of the cuboid main body; the contact rod is a round rod with a thicker upper part and a thinner lower part, and the diameters of the thicker upper part and the thinner lower part respectively match the upper and lower ends of the through hole of the main body; the return spring is sleeved on the thinner end of the contact rod and is inserted into the through hole of the main body together with the contact rod; the cam is fixedly installed at the end of the motor shaft; the motor is horizontally fixedly installed on the upper surface of the main body through a machine base, and it is ensured that the cam at the end of the shaft is directly above the upper surface of the contact rod.
[0006] Further, the pushing mechanism includes a base, a rocker, a pushing rod, and a connecting rod; the base is a cuboid, an articulated seat is arranged at the rear side of the upper surface of the base, and a guiding seat is arranged at the front side of the upper surface of the base; the rocker is an L-shaped bent long strip, and articulated holes are respectively arranged at the end and the bending part of the short folded edge of the L-shaped bend. Its end is articulated with the articulated seat, and its bending part is articulated with one end of the connecting rod; the pushing rod is slidably installed in the guiding hole of the guiding seat; the other end of the connecting rod is articulated with the end of the pushing rod.
[0007] Further, a buffer adjustment mechanism is arranged on the lower section of the contact rod of the electric contact. A round hole with a smaller upper part and a larger lower part is arranged on the lower section of the contact rod, and a thread is arranged on the outer circle of the lower section of the contact rod. It includes a pushing rod, a buffer spring, and a cap; the pushing rod is a round rod with smaller ends and a larger middle part, and the diameters of the upper section and the middle section respectively match the round hole of the lower section of the contact rod; the buffer spring is sleeved on the upper section of the pushing rod and is inserted into the round hole of the lower section of the contact rod together with the pushing rod; the cap is a hollow cylinder with a larger upper part and a smaller lower part, and a thread is arranged on the inner circle of the large hole, and the diameter of the small hole matches the lower section of the pushing rod; the cap is screwed on the lower end of the contact rod to fix the pushing rod and the buffer spring in the round hole of the lower section of the contact rod.
[0008] The beneficial technical effect of the durability test device for the key switch of the generator controller of the present utility model is that it does not require a compressed air gas source, can simultaneously activate multiple electric contacts, and has simple operation. Description of the Drawings
[0009] Attached Figure 1 is a three-dimensional schematic diagram of the generator controller;
[0010] Attached Figure 2It is a three-dimensional schematic diagram of the durability test method for the key switch of the generator controller in the prior art;
[0011] Appendix Figure 3 It is a three-dimensional schematic diagram of the durability test device for the key switch of the generator controller of the present utility model;
[0012] Appendix Figure 4 It is a three-dimensional schematic diagram of the electric contact of the present utility model;
[0013] Appendix Figure 5 It is a three-dimensional schematic diagram of the electric contact of the present utility model from another angle;
[0014] Appendix Figure 6 It is a cross-sectional schematic diagram of the electric contact of the present utility model;
[0015] Appendix Figure 7 It is a three-dimensional schematic diagram of the top-pushing mechanism of the present utility model;
[0016] Appendix Figure 8 It is a cross-sectional schematic diagram of another embodiment of the electric contact of the present utility model;
[0017] Appendix Figure 9 It is a three-dimensional schematic diagram when the durability test device for the key switch of the generator controller of the present utility model is in test.
[0018] In the figure, A is the controller, a is the substrate, b is the L-shaped pressing block, c is the fixed frame, d is the strip-shaped hole plate, e is the pneumatic contact; 1 is the substrate; 2 is the L-shaped baffle; 3 is the top-pushing mechanism, 3-1 is the base, 3-2 is the rocker, 3-3 is the top-pushing rod, 3-4 is the connecting rod; 4 is the electric contact, 4-1 is the bracket, 4-2 is the main body, 4-3 is the contact rod, 4-4 is the return spring, 4-5 is the cam, 4-6 is the motor, 4-7 is the ejector rod, 4-8 is the buffer spring, 4-9 is the cap.
[0019] The following further describes the durability test device for the key switch of the generator controller of the present utility model in conjunction with the drawings and specific embodiments. Specific Embodiments
[0020] From Appendix Figure 3 、 4As can be seen from FIGS. 5, 6, and 9, the durability test device for the key switch of the generator controller of the present utility model includes a substrate 1, an L-shaped baffle 2, a pushing mechanism 3, and an electric contact 4; the substrate is a rectangular plate; the L-shaped baffle is arranged at the upper left corner of the substrate, and the two sides are respectively parallel to the two right-angled sides of the substrate; there are four pushing mechanisms, two in a group, respectively arranged on the right side and the lower side of the substrate, and the front ends of the push rods all face the inner side of the substrate; there are several electric contacts, including a bracket 4-1, a main body 4-2, a contact rod 4-3, a return spring 4-4, a cam 4-5, and a motor 4-6; the bracket is a rectangular frame structure, and a hollow rectangular support plate is arranged at the bottom of the bracket; the main body is a cuboid, fixed directly above the bracket, and a circular through hole with a larger upper part and a smaller lower part is arranged at the vertical center of the cuboid main body; the contact rod is a round rod with a thicker upper part and a thinner lower part, and the diameters of the thicker upper part and the thinner lower part respectively match the upper and lower ends of the through hole of the main body; the return spring is sleeved on the thin end of the contact rod and is inserted into the through hole of the main body together with the contact rod; the cam is fixedly installed at the end of the motor shaft; the motor is horizontally fixedly installed on the upper surface of the main body through a machine base, and it is ensured that the cam at the end of the rotating shaft is directly above the upper surface of the contact rod. The durability test device for the key switch of the generator controller of the present utility model uses electricity as the power source and does not require a compressed air source; since the electric contact is used instead of the pneumatic contact, the noise and vibration during the operation of the contact are greatly reduced, and multiple electric contacts can be turned on simultaneously. During the specific test, the controller is placed on the substrate, and the upper left corner of the controller is just placed between the two sides of the L-shaped baffle. Each pushing mechanism is successively turned to the ejected position, thereby fixing the controller on the substrate; according to the number of key switches to be tested, select the appropriate number of electric contacts; stick double-sided tape on the lower surface of the support plate at the bottom of the electric contact bracket, place the electric contact directly above the key switch to be tested, so that the lower surface of the contact rod of the electric contact is directly above the key switch to be tested; press down the electric contact so that the double-sided tape firmly fixes the electric contact directly above the key switch to be tested; repeat the operation in this way so that electric contacts are fixed directly above all the key switches to be tested; according to the test requirements, set the opening frequency and number of times of the electric contact; turn on the power supply, the motor of the electric contact starts to rotate, the cam presses the contact rod to move downward, and the lower surface of the contact rod will contact and trigger the key switch to be tested, and so on until the test is completed. After the test is completed, move the electric contact, the double-sided tape becomes loose, and the electric contact can be removed from the controller. Since the triggering force of the key switch to be tested is small, the pressure required by the electric contact is also small, the power of the electric contact can be selected to be small, the whole electric contact can be made small and delicate, and the noise and vibration during the operation of the electric contact are also small. Therefore, using double-sided tape to fix the electric contact can fully meet the requirements.The utility model uses a pushing mechanism and an L-shaped baffle to cooperate to fix the control instrument on the substrate, and uses double-sided tape to fix the electric contact above the key switch to be tested. It not only has a simple structure but also is easy to operate.
[0021] As can be seen from the appendix Figure 7 As one of the preferred technical solutions, the pushing mechanism includes a base 3-1, a rocker 3-2, a push rod 3-3 and a connecting rod 3-4; the base is a cuboid, and a hinge seat is arranged at the rear side of the upper surface of the base, and a guide seat is arranged at the front side of the upper surface of the base; the rocker is an L-shaped bent long strip, and hinge holes are respectively arranged at the end and the bent part of the short bent edge of the L-shaped bend. Its end is hinged to the hinge seat, and its bent part is hinged to one end of the connecting rod; the push rod is slidably installed in the guide hole of the guide seat; the other end of the connecting rod is hinged to the end of the push rod. Using a connecting rod mechanism as the pushing mechanism is relatively simple to manufacture, and the connecting rod mechanism has a self-locking function, which can ensure that the control instrument will not loosen during the entire test process.
[0022] As can be seen from the appendix Figure 8 As one of the preferred technical solutions, a buffer adjustment mechanism is arranged on the lower section of the contact rod of the electric contact. A round hole with a small upper part and a large lower part is arranged on the lower section of the contact rod, and a thread is arranged on the outer circle of the lower section of the contact rod. It includes a push rod 4-7, a buffer spring 4-8 and a cap 4-9; the push rod is a round rod with small ends and a large middle part, and the diameters of the upper and middle sections are respectively matched with the round holes of the lower section of the contact rod; the buffer spring is sleeved on the upper section of the push rod and is inserted into the round hole of the lower section of the contact rod together with the push rod; the cap is a hollow cylinder with a large upper part and a small lower part, and a thread is arranged on the inner circle of the large hole, and the diameter of the small hole is matched with the lower section of the push rod; the cap is screwed on the lower end of the contact rod to fix the push rod and the buffer spring in the round hole of the lower section of the contact rod. The purpose of setting the buffer adjustment mechanism is to prevent the lower end face of the contact rod from "hard" squeezing with the key switch when the height of individual key switches on the control instrument seriously exceeds the standard, causing damage to the key switch. When the lower end face of the contact rod continues to move downward after contacting the key switch, the push rod will compress the buffer spring and move upward to avoid "hard" squeezing with the key switch. In addition, by adjusting the screwing position of the cap, the length of the push rod extending out can be adjusted, and then the distance between the lower end face of the push rod and the key switch can be adjusted, so that the push rod can not only ensure that it can trigger the key switch during the up and down movement, but also ensure that once the key switch is triggered, the push rod has already moved to the lowest point and starts to move upward, thus avoiding "hard" squeezing with the key switch.
[0023] Obviously, the beneficial technical effect of the key switch durability test device of the generator control instrument of the utility model is that it does not need to be equipped with a compressed air gas source, can simultaneously turn on multiple electric contacts, and is easy to operate.
Claims
1. A durability test device for the key switch of a generator controller, characterized in that, The test device includes a substrate, an L-shaped baffle, a pushing mechanism, and an electric contact; the substrate is a rectangular plate; the L-shaped baffle is arranged at the upper left corner of the substrate, and its two sides are respectively parallel to the two right-angle sides of the substrate; there are four pushing mechanisms, two in a group, which are respectively arranged on the right side and the lower side of the substrate, and the front ends of the push rods all face the inner side of the substrate; there are several electric contacts, including a bracket, a main body, a contact rod, a return spring, a cam, and a motor; the bracket is a rectangular frame structure, and a hollow rectangular support plate is arranged at the bottom of the bracket; the main body is a cuboid, fixed directly above the bracket, and a circular through-hole with a larger upper part and a smaller lower part is arranged at the vertical center of the cuboid main body; the contact rod is a round rod with a thicker upper part and a thinner lower part, and the diameters of the thicker upper part and the thinner lower part respectively match the upper and lower ends of the through-hole of the main body; the return spring is sleeved on the thin end of the contact rod and is inserted into the through-hole of the main body together with the contact rod; the cam is fixedly installed at the end of the motor shaft; the motor is horizontally fixedly installed on the upper surface of the main body through a machine base, and it is ensured that the cam at the end of the shaft is directly above the upper end surface of the contact rod.
2. The durability test device for the key switch of the generator controller according to claim 1, characterized in that The pushing mechanism includes a base, a rocker, a push rod, and a connecting rod; the base is a cuboid, an articulated seat is arranged at the rear side of the upper surface of the base, and a guide seat is arranged at the front side of the upper surface of the base; the rocker is an L-shaped bent long strip, and articulated holes are respectively arranged at the end and the bent part of the short bent side of the L-shaped bent part. Its end is articulated with the articulated seat, and its bent part is articulated with one end of the connecting rod; the push rod is slidably installed in the guide hole of the guide seat; the other end of the connecting rod is articulated with the end of the push rod.
3. The durability test device for the key switch of the generator controller according to claim 1 or 2, characterized in that, A buffer adjustment mechanism is arranged on the lower section of the contact rod of the electric contact. A round hole with a smaller upper part and a larger lower part is arranged on the lower section of the contact rod, and a thread is arranged on the outer circle of the lower section of the contact rod. It includes a push rod, a buffer spring, and a cap; the push rod is a round rod with smaller ends and a larger middle part, and the diameters of the upper section and the middle section respectively match the round hole of the lower section of the contact rod; the buffer spring is sleeved on the upper section of the push rod and is inserted into the round hole of the lower section of the contact rod together with the push rod; the cap is a hollow cylinder with a larger upper part and a smaller lower part, and a thread is arranged on the inner circle of the large hole, and the diameter of the small hole matches the lower section of the push rod; the cap is screwed onto the lower end of the contact rod to fix the push rod and the buffer spring in the round hole of the lower section of the contact rod.