A mechanical performance testing device for a toggle switch

Abstract

The present invention discloses a mechanical performance testing device for a toggle switch, which is composed of a fixed base, an active shaft bracket, a driven shaft bracket, a guide rail assembly, a switch bracket, a toggle switch, a transmission rack, a fastening ring and a connecting rod. The beneficial effect of the present invention is that through a main force input, the continuous periodic motion of pulling up, pulling, retracting, pulling up again, pulling in the opposite direction and retracting again of the toggle switch is realized, thereby realizing the test of the pulling force, pulling torque and life of the toggle switch. Through the close cooperation between the various mechanisms, the present device can complete the cycle of the above-mentioned several actions, and the system configuration is simple, the economy is good, and the test efficiency is high.

Description

Technical Field

[0001] The invention relates to a mechanical performance test of a toggle switch, in particular to a mechanical performance test device of a toggle switch. Background Art

[0002] In order to meet the requirements for aircraft controllability, a large number of switch devices are used in the design process of the aircraft, such as rotary switches, push switches with lights, toggle switches, potentiometers, circuit breakers, etc. By testing and statistically analyzing the human-machine interaction performance indicators such as the toggle force, pressing force, rotational force, and life of various types of switches, a theoretical basis is provided for the selection, customization, and use of switches, and switches that make operators feel uncomfortable are improved or replaced to guide the selection and use of switches. Since the mechanical indicators of each switch have a great impact on the performance of the aircraft's control panel system, it is very necessary to ensure that the performance indicators of the above switches meet the requirements through technical research.

[0003] Among the above switches, the toggle switches are divided into two types: direct toggle type and pull-up toggle type. The main difference in the mechanical performance indicators that need to be measured for these two types of toggle switches is that the pull-up toggle switch needs to be pulled out and unlocked before being pulled, so it is necessary to increase the measurement of the pull-out force. Most of the designs of existing measurement mechanisms add a power drive device to perform the pull-up action first, and then use another power drive device to measure the pulling torque. However, adding a power drive device to complete the measurement of multiple performance indicators within a cycle often requires relatively precise coordination and feedback devices between these power drive devices, which increases the complexity of the entire system.

[0004] For the measurement of the life of a toggle switch, the test mechanism is required to have two opposite directions of rotation: clockwise and counterclockwise. Most existing solutions use two power drive devices with opposite rotation directions or use one drive device to first rotate clockwise and then change direction and then rotate counterclockwise. This measurement method also often increases the complexity of the measurement device or has poor economic performance and low efficiency.

[0005] Therefore, it is necessary to design a measuring device that can complete the pulling force, pulling torque and service life by only one power drive device. Summary of the invention

[0006] The purpose of the present invention is to solve the problems in the prior art and to provide a novel mechanical performance testing device for a toggle switch.

[0007] In order to achieve this purpose, the technical solution of the present invention is as follows: a toggle switch mechanical performance testing device, composed of a fixed base, an active shaft bracket, a driven shaft bracket, a guide rail assembly, a switch bracket, a toggle switch, a transmission rack, a fastening ring and a connecting rod, the active shaft bracket, the guide rail assembly, the driven shaft bracket and the switch bracket are arranged from left to right in sequence, the active shaft bracket is used to support the active shaft, the driven shaft bracket is used to support the driven shaft, the switch bracket is used to fix the toggle switch, the active shaft, the driven shaft and the rotating shaft of the toggle switch have a common axis and the axis extends in the left and right directions, the left side of the active shaft The end is used to connect the main force input device, a cam and a driving gear are fixed on the right end of the driving shaft, the driving gear is a non-full-tooth gear, the profile of the cam includes a base circle and a cam peach, the driven gear is fixed on the left end of the driven shaft, the driven gear is a full-tooth gear with exactly the same parameters as the driving gear, a torque sensor and a lever device are fixed on the right end of the driven shaft, the transmission rack has a rack upper wall and a rack lower wall, the rack upper wall and the rack lower wall act synchronously, the rack upper wall is arranged above the driving gear, and the rack lower wall is arranged below the driving gear and the driven gear. The bottom surface of the upper wall of the rack is formed with an upper wall rack portion, and the top surface of the lower wall of the rack is formed with a lower wall rack portion. Only when the tooth portion of the driving gear rotates to the upper wall rack portion, the driving gear is meshed with the upper wall rack portion, and only when the tooth portion of the driving gear rotates to the lower wall rack portion, the driving gear is meshed with the lower wall rack portion, and the driven gear is always meshed with the lower wall rack portion. The guide rail assembly comprises a linear guide rail and a movable slider on the linear guide rail, the linear guide rail extends in the front-rear direction, the movable slider is displaced along the linear guide rail, and the movable slider is fixedly connected to the lower wall of the rack. Then, the fastening ring is used to fix the handle part of the toggle switch so that the two do not slide. The connecting rod is arranged above the cam, the toggle device and the fastening ring. The connecting rod extends in the left and right directions. The connecting rod is formed with a push rod part extending downward at the cam. The bottom surface of the push rod part abuts against the circumferential surface of the cam to form a cam actuator. The connecting rod is formed with a guide rod part extending downward at the toggle device. The connecting rod is fixedly connected to the fastening ring at the fastening ring. A tension sensor is arranged between the connecting rod and the fastening ring. The tension sensor is used to measure the pulling force of the handle part of the toggle switch.

[0008] As a preferred solution of a mechanical property testing device for a toggle switch, the cam profile includes a base arc, an outer arc, an outer point, and a transition line connecting the base arc, the outer arc, and the outer point. The base arc and the outer circle have a common center. The difference between the diameter of the base arc and the radius of the outer arc should be the height that the handle of the toggle switch can be pulled up. The angle α1 occupied by the outer arc should be twice the angle that the handle of the toggle switch can rotate. The angle occupied by the base arc and the transition line should be (360°-angle α1), and is equally divided into angle α2 and angle α3 by the outer point. As a preferred solution for a toggle switch mechanical property testing device, a guide groove for the guide rod portion to move up and down is provided on the toggle device, and a space for the guide rod portion to move slightly left and right is provided. When the driven gear rotates, the toggle device can rotate synchronously with the guide rod portion. When the toggle device and the guide rod portion rotate and the push rod portion moves up and down, the guide rod portion can move up and down in the guide groove of the toggle device while rotating, and an elastic element is provided in the toggle device.

[0009] Compared with the prior art, the beneficial effect of the present invention is at least that: the mechanical performance testing device of the toggle switch provided by the present invention can realize the continuous periodic motion of pulling up, pulling, retracting, pulling up again, pulling in the opposite direction, and retracting of the toggle switch through an active force input, thereby realizing the test of the pulling force, pulling torque and life of the toggle switch. The device can complete the cycle of the above-mentioned several actions through the close cooperation between the various mechanisms, and the system configuration is simple, the economy is good, and the test efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of an embodiment of the present invention.

[0011] Figure 2 It is a schematic structural diagram of an embodiment of the present invention (without transmission rack).

[0012] Figure 3 It is a schematic diagram of the structure of a driving gear and a transmission rack in one embodiment of the present invention.

[0013] Figure 4 It is a schematic diagram of the structure of a driven gear and a transmission rack in one embodiment of the present invention.

[0014] Figure 5 It is a schematic diagram of the structure of a toggle switch and a cam in one embodiment of the present invention.

[0015] Figure 6 It is a schematic diagram of the structure of a toggle switch and a driven gear in one embodiment of the present invention.

[0016] Figure 7for Figure 6 Schematic diagram of the structure in the AA direction.

[0017] Figure 8 for Figure 6 Schematic diagram of the structure in the middle BB direction.

[0018] Fig. 9 Schematic diagram of the structure of a cam and a transmission rack in one embodiment of the present invention.

[0019] Fig.10 Schematic diagram of the motion cycle of a cam in one embodiment of the present invention.

[0020] Fig.11 Schematic diagram of the cam motion law in one embodiment of the present invention.

[0021] Fig.12 A schematic diagram of the relationship between the main force input speed / cam speed / gear 1 speed and time in one embodiment of the present invention.

[0022] Fig.13 A schematic diagram of the relationship between power input speed / gear 2 speed and time in one embodiment of the present invention.

[0023] Fig.14 A schematic diagram of the relationship between the pull-up height and movement time of a switch in one embodiment of the present invention. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below by means of specific embodiments connected with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] See also Figures 1 to 9 , shown in the figure is a toggle switch mechanical performance test device. The test device is composed of a fixed base 1, an active shaft bracket 2, a driven shaft bracket 3, a guide rail assembly 4, a switch bracket 5, a toggle switch 6, a transmission rack, a fastening ring 8 and a connecting rod 9. The active shaft bracket 2, the driven shaft bracket 3, the guide rail assembly 4 and the switch bracket 5 are fixed on the fixed base 1. Moreover, the active shaft bracket 2, the guide rail assembly 4, the driven shaft bracket 3 and the switch bracket 5 are arranged in sequence from left to right. The active shaft bracket 2 is used to support the active shaft 20. The driven shaft bracket 3 is used to support the driven shaft 30. The switch bracket 5 is used to fix the toggle switch 6. The active shaft 20, the driven shaft 30 and the rotating shaft 61 of the toggle switch 6 have a common axis and the axis extends in the left-right direction.

[0026] The left end of the driving shaft 20 is used to connect the main force input device 21. The main force input device 21 can be a motor. The main force input device 21 can drive the driving shaft 20 to rotate. A cam 22 and a driving gear 23 are fixed to the right end of the driving shaft 20. The driving gear 23 is a non-full-tooth gear. The teeth of the driving gear 23 are continuous teeth. In this embodiment, the teeth occupy 10% of the entire circumference.

[0027] The profile of the cam 22 includes a base arc 221, an outer arc 222, an outer point 223, and a transition line 224 connecting the base arc 221, the outer arc 222, and the outer point 223. The base arc 221 and the outer arc 222 have a common center. The difference between the diameter of the base arc 221 and the radius of the outer arc 222 should be the height that the handle 60 of the flip switch 6 can be pulled up. The angle α1 occupied by the outer arc 222 should be twice the angle that the handle 60 of the flip switch 6 can rotate. The angle occupied by the base arc 221 and the transition line 224 should be (360°-angle α1), and is equally divided into angle α2 and angle α3 by the outer point 223.

[0028] The driven gear 31 is fixed to the left end of the driven shaft 30. The driven gear 31 is a full-tooth gear having the same parameters as the driving gear 21.

[0029] A torque sensor 32 and a pulling device 33 are fixed to the right end of the driven shaft 30 .

[0030] The transmission rack 7 has a rack upper wall 71 and a rack lower wall 72. The rack upper wall 71 and the rack lower wall 72 are an integral structure and move synchronously. In this embodiment, the transmission rack 7 is a frame-shaped structure. The rack upper wall 71 is arranged above the driving gear 21. The rack lower wall 72 is arranged below the driving gear 21 and the driven gear 31. The bottom surface of the rack upper wall 71 is formed with an upper wall rack portion 710. The top surface of the rack lower wall 72 is formed with a lower wall rack portion 720.

[0031] The driving gear 21 is meshed with the upper wall rack portion 710 only when the tooth portion of the driving gear 21 rotates to the upper wall rack portion 710. Similarly, the driving gear 21 is meshed with the lower wall rack portion 720 only when the tooth portion of the driving gear 21 rotates to the lower wall rack portion 720. The driven gear 31 is always meshed with the lower wall rack portion 720.

[0032] The guide rail assembly 4 comprises a linear guide rail 41 and a movable slider 42 on the linear guide rail 41. The linear guide rail 41 extends in the front-rear direction. The movable slider 42 is displaced along the linear guide rail 41. The movable slider 42 is fixedly connected to the rack lower wall 72.

[0033] The fastening ring 8 is used to fit the handle portion 60 of the toggle switch 6 so that the two do not slide.

[0034] The connecting rod 9 is arranged above the cam 22, the pulling device 33 and the fastening ring 8. The connecting rod 9 extends in the left-right direction. The connecting rod 9 is formed with a push rod portion 91 extending downward at the cam 22. The bottom surface of the push rod portion 91 abuts against the peripheral surface of the cam 22 to form a cam actuator. The connecting rod 9 is formed with a guide rod portion 92 extending downward at the pulling device 33. The connecting rod 9 is fixedly connected to the fastening ring 8 at the fastening ring 8. Preferably, a tension sensor 80 is arranged between the connecting rod 9 and the fastening ring 8. The tension sensor 80 is used to measure the pulling force of the handle portion 60 of the pull switch 6.

[0035] The pull device 33 is provided with a guide groove for the guide rod 92 to move up and down, and a space for the guide rod 92 to move slightly left and right is provided. When the driven gear 31 rotates, the pull device 33 can rotate synchronously with the guide rod 92. When the pull device 33 rotates together with the guide rod 92 and the push rod 91 moves up and down, the guide rod 92 can move up and down in the guide groove of the pull device 33 while rotating, and the elastic element provided in the pull device 33 can play a buffering role to better connect the rotation and stop.

[0036] Fig.10 The starting point of the motion cycle is set. When the angle α4 is 60°, the values ​​of the angles α1, α2, and α3 are all 120°. The motion law of the cam is as follows: Fig.11 As shown, when the cam 22 performs uniform circular motion, the push rod portion 91 performs periodic up and down movement, and at the same time, the connecting rod 9 and the guide rod portion 92, the fastening ring 6 and the handle portion 60 of the toggle switch 6 which are integrated with the push rod portion 91 perform up and down movement, thereby realizing the two cyclic actions of pulling up and retracting the handle portion 60 of the toggle switch 6. The pull-up height cycle diagram of the switch handle is shown in FIG. Fig. 9 When angle α4 is other angles, angle α2, angle α3 and angle α4 should be changed accordingly, and Fig.11 Cam motion law, Fig. 9The height cycle diagram of the switch handle should also change accordingly. However, it should be ensured that the angle α2 is equal to the angle α3, and the angle α1 is equal to twice the angle α4.

[0037] See also Fig.10 , sets the starting point of the motion cycle, and when the angle α4 is 60°. When the input speed of the main force input device 21 is ω1, the driving gear speed is as follows Fig.12 As shown, the speed of the driven gear and the speed of the power input are as follows: Fig.13 When the angle is other angles, the input speed of the driven power and the speed of the driven gear will change accordingly. However, it should be ensured that the angle at which the driving gear and the transmission rack can mesh to provide power is consistent.

[0038] Initial position: the extension direction of the push rod is the same as the center line. The push rod portion 91 abuts against the tip of the cam lobe. The angle α4 is 60°.

[0039] According to the above description of the mechanism and motion of the test device, when the main force input device 1 moves at a rotation speed ω1, the driving shaft 2 together with the cam 22 and the driving gear also moves synchronously at a rotation speed ω1. The entire motion cycle T of the device is now described as follows.

[0040] When the movement time t=0, the push rod portion 91 of the connecting rod 9 is at the highest point under the push of the cam 22. The handle portion 60 of the toggle switch 6 is in a pulled-up state. The tooth portion of the driving gear 23 is just in a state of being engaged with the lower wall rack portion 720 and transmitting power.

[0041] When the movement time t=0-1 / 6T, the driving gear 23 pushes the lower wall rack portion 720 backward. At the same time, the lower wall rack portion 720 transmits power to the driven gear 31, so that the driven gear 31, the driven shaft 3 and the driving gear 23 make circular motions at the same speed and direction. The pulling device 33 connected to the driven shaft 3 pulls the guide rod portion 92 on the connecting rod 9, so that the connecting rod 9 together with the fastening ring 6 and the handle portion 60 of the toggle switch 6 make circular motions at the same speed and direction. During this process, the connecting rod 9 and its push rod portion 91 do not move relative to the cam 22, and the handle portion 60 of the toggle switch 6 is always in a pulled-up state. During this process, the handle portion 60 of the toggle switch 6 is in a pulled-up state and rotated 60° (pulled) at a uniform speed relative to the main structure of the toggle switch 6.

[0042] When the movement time t=1 / 6T-1 / 2T, the driving gear 23 and the lower wall rack portion 720 change from the previous meshing state to the disengaged state, and no longer transmit power to the driven gear 31, that is, the moving gear 15 together with the trigger device 33, the connecting rod 9, the fastening ring 8, and the handle portion 60 of the trigger switch 6 return to a stationary state. The cam 22 continues to move in a uniform circular motion, so the push rod portion 91 of the connecting rod 9 and the cam 22 move relative to each other, gradually descending from the highest point to the lowest point and then rising to the highest point, and the handle portion 60 of the trigger switch 6 also changes from the pulled-up state to the retracted state and then to the pulled-up state, and the guide rod portion 92 of the connecting rod 9 moves downward to the lowest point and then moves upward to the highest point in the guide groove of the trigger device 33.

[0043] When the movement time t=1 / 2T-2 / 3T, the driving gear 23 and the transmission rack 9 change from the previous disengagement state to the meshing state with the upper wall rack portion 710 and the transmission power state, so that the driven gear 31, the driven shaft 3 and the driving gear 23 make circular motions in the opposite direction at the same speed, and the pulling device 33 connected to the driven shaft 3 pulls the guide rod portion 92 of the connecting rod 9, so that the connecting rod 9, together with the fastening ring 6 and the handle portion 60 of the pull switch 6, makes circular motions in the opposite direction at the same speed. In this process, the connecting rod 9 and its push rod portion 91 and the cam 22 make circular motions in the opposite direction at the same speed at a relative speed of 2ω1. It can be seen from the shape of the cam 22 and its movement law that the outer edge of the cam is always at the highest point during this time period, and the handle of the pull switch 6 is also always in the pulled-up state. Then, during this process, the handle portion 60 of the toggle switch 6 is in a state of being pulled up relative to the main body structure of the toggle switch 6 and rotating 60° in the opposite direction at a constant speed (reverse toggle).

[0044] When the movement time t=2 / 3T-T, the driving gear 23 and the upper wall rack portion 710 change from the previous meshing state to the disengaged state, and no longer transmit power to the driven gear 31, that is, the driven gear 31 together with the pulling device 33, the connecting rod 9, the fastening ring 8, and the handle portion 60 of the pulling switch 6 are in a stationary state; and the cam 22 is always in uniform circular motion, so the push rod portion 91 of the connecting rod 9 and the cam 22 move relative to each other, gradually descending from the highest point to the lowest point and then rising to the highest point, and the handle portion 60 of the pulling switch 6 also changes from the pulled-up state to the retracted state and then to the pulled-up state, and the guide rod portion 92 of the connecting rod 9 moves downward to the lowest point and then moves upward to the highest point in the guide groove of the pulling device 33.

[0045] During the entire motion cycle described above, the angle α4 of 60° is only an embodiment. When the angle α4 is other angles, the speed of the slave power input and the speed of the driven gear change accordingly, but it should be ensured that the angle at which the driving gear 23 and the transmission rack 7 are meshed to provide power is consistent with the angle α4; at the same time, it should be ensured that the angle α2 is equal to the angle α3, and the angle α1 is equal to twice the angle α4.

[0046] The above only expresses the implementation mode of the present invention, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A mechanical performance testing device for a toggle switch, characterized in that: The invention is composed of a fixed base, a driving shaft bracket, a driven shaft bracket, a guide rail assembly, a switch bracket, a toggle switch, a transmission rack, a fastening ring and a connecting rod. The driving shaft bracket, the guide rail assembly, the driven shaft bracket and the switch bracket are arranged from left to right in sequence. The driving shaft bracket is used to support the driving shaft, the driven shaft bracket is used to support the driven shaft, and the switch bracket is used to fix the toggle switch. The driving shaft, the driven shaft and the rotating shaft of the toggle switch have a common axis and the axis extends in the left-right direction. The left end of the driving shaft is used to connect the main force input device, and the right end of the driving shaft is fixed on the A cam and a driving gear are fixed, the driving gear is a non-full-tooth gear, the profile of the cam includes a base circle and a cam peach, a driven gear is fixed on the left end of the driven shaft, the driven gear is a full-tooth gear with the same parameters as the driving gear, a torque sensor and a pull device are fixed on the right end of the driven shaft, the transmission rack has a rack upper wall and a rack lower wall, the rack upper wall and the rack lower wall act synchronously, the rack upper wall is arranged above the driving gear, the rack lower wall is arranged below the driving gear and the driven gear, and the bottom surface of the rack upper wall is formed with an upper wall rack portion The top surface of the lower wall of the rack is formed with a lower wall rack portion. Only when the tooth portion of the driving gear rotates to the upper wall rack portion, the driving gear is meshed with the upper wall rack portion. Only when the tooth portion of the driving gear rotates to the lower wall rack portion, the driving gear is meshed with the lower wall rack portion, and the driven gear is always meshed with the lower wall rack portion. The guide rail assembly has a linear guide rail and a movable slider on the linear guide rail. The linear guide rail extends in the front-rear direction. The movable slider is displaced along the linear guide rail. The movable slider is fixedly connected to the lower wall of the rack. The fastening ring is used to The handle part of the toggle switch is fixedly sleeved thereon, and the two do not slide. The connecting rod is arranged above the cam, the toggle device and the fastening ring. The connecting rod extends in the left and right directions. The connecting rod is formed with a push rod part extending downward at the cam. The bottom surface of the push rod part abuts against the peripheral surface of the cam to form a cam actuator. The connecting rod is formed with a guide rod part extending downward at the toggle device. The connecting rod is fixedly connected to the fastening ring at the fastening ring. A tension sensor is arranged between the connecting rod and the fastening ring. The tension sensor is used to measure the pulling force of the handle part of the toggle switch.

2. A toggle switch mechanical performance testing device according to claim 1, characterized in that: The cam contour line includes a base arc, an outer arc, an outer point and a transition line connecting the base arc, the outer arc and the outer point. The base arc and the outer circle have a common center. The difference between the diameter of the base arc and the radius of the outer arc should be the height that the handle of the toggle switch can be pulled up. The angle α1 occupied by the outer arc should be twice the angle that the handle of the toggle switch can rotate. The angle occupied by the base arc and the transition line should be (360°-angle α1), and is equally divided into angle α2 and angle α3 by the outer point.

3. A toggle switch mechanical performance testing device according to claim 1, characterized in that: The pulling device is provided with a guide groove for the guide rod part to move up and down, and a space is provided for the guide rod part to make a slight left and right movement. When the driven gear rotates, the pulling device and the guide rod part rotate synchronously. When the pulling device and the guide rod part rotate and the push rod part moves up and down, the guide rod part moves up and down in the guide groove of the pulling device while rotating, and an elastic element is provided in the pulling device.

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