Novel cam triggering mechanism

Abstract

The utility model relates to the technical field of switching trigger mechanisms, and discloses a novel cam trigger mechanism which comprises a supporting frame, and a cover plate is fixedly connected to the top end of the supporting frame. According to the novel cam triggering mechanism, the small gear is fixed to the cam shaft through the clamping groove and can drive the cam shaft to rotate together, the cam shaft drives the first cam, the second cam, the third cam and the fourth cam which are fixed to the cam shaft through the locking screws to rotate together, and the first cam, the second cam, the third cam and the fourth cam are clamped together through the fluted discs machined on the side faces of the cams. In the rotating process, the protruding parts of the cams trigger different travel switches, the cams determine the sequence, displacement and angle of triggering the travel switches according to the installation positions, the installation angles and the shapes of the protruding parts of the cams, and after the different travel switches are triggered, signals are fed back to an upper controller, so that control logic is achieved. And the travel switches are isolated by insulating plates, so that signal interference is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of switch trigger mechanism, in particular to a new cam trigger mechanism. BACKGROUND

[0002] The development of microswitches and travel switches is closely related to their wide application in industry and daily life. These switch trigger mechanisms are developed to meet the demand of precise, fast and reliable control in modern electrical control systems. Microswitches are a kind of fast switch driven by pressure. The working principle is that the action spring is driven by external mechanical force to produce instantaneous action, thereby realizing the fast on-off of the circuit. This kind of switch has the characteristics of small size, sensitive action, small contact spacing, etc., and is suitable for automatic control and safety protection devices that need to frequently switch the circuit. Travel switches are mainly used to detect the position of working machinery and send commands to control the movement direction or travel length. Travel switches are divided into contact type with mechanical structure and non-contact type with electrical structure.

[0003] However, the direct trigger mechanism of the existing travel switch or microswitch has a single trigger mode, large force and long force time, and is prone to impact or fatigue damage. Therefore, there is an urgent need for a new cam trigger mechanism. SUMMARY

[0004] The present application aims to provide a new cam trigger mechanism to solve the problems in the background art.

[0005] In order to solve the above technical problems, the present application provides the following technical scheme: a new cam trigger mechanism, comprising a support frame, the top end of the support frame is fixedly connected with a cover plate;

[0006] The inner wall of the support frame is provided with a camshaft, the surface of the camshaft is provided with an adjusting washer, the surface of the camshaft is provided with a cam four, the surface of the camshaft is provided with a cam three, the surface of the camshaft is provided with a cam two, the surface of the camshaft is provided with a cam one, the surface of the cam one is provided with a locking screw in a threaded connection mode, the surface of the camshaft is provided with a pinion, the left end of the camshaft is provided with a sleeve three, the right end of the camshaft is provided with a sleeve two, the top end of the pinion is engaged with a gear wheel, the inner wall of the gear wheel is fixedly connected with a connecting shaft, the surface of the connecting shaft is provided with a thin nut in a threaded connection mode, the surface of the connecting shaft is provided with a nut one in a threaded connection mode, the surface of the connecting shaft is provided with a spring washer one, the surface of the connecting shaft is provided with an adjusting sleeve, the surface of the connecting shaft is provided with a rotation stopping screw in a threaded connection mode, the left end of the connecting shaft is provided with a sleeve one, the inner wall of the support frame is provided with a travel switch mounting plate, the bottom end of the travel switch mounting plate two is fixedly connected with a travel switch mounting plate one, the inner wall of the travel switch mounting plate one is provided with a travel switch fixing rod, the surface of the travel switch fixing rod is provided with an insulating plate, and the surface of the travel switch fixing rod is provided with a travel switch.

[0007] Preferably, the top end of the travel switch mounting plate two is fixedly connected with a terminal mounting plate, the surfaces of the two ends of the travel switch fixing rod are provided with spring washers three, and the surfaces of the two ends of the travel switch fixing rod are provided with nuts three.

[0008] Preferably, the left end surface of the support frame is provided with a mounting plate, the left end of the support frame is provided with the mounting plate in a threaded connection mode through a bolt one, and the surface of the bolt one is provided with a spring washer two.

[0009] Preferably, the surface of the connecting shaft is provided with a rotating rod, the surface of the connecting shaft is provided with a pointer, and the right end of the support frame is fixedly connected with an angle indicator.

[0010] Preferably, the inner wall of the support frame is provided with a support plate, the left end of the connecting shaft is rotatably connected with the support plate, and the right end of the camshaft penetrates through the support plate and is rotatably connected with the support frame.

[0011] Preferably, the travel switch is provided with five travel switches, and the five travel switches are linearly arranged on the surface of the travel switch fixing rod.

[0012] Preferably, the left end of the cam one is engaged with the cam two, the left end of the cam two is engaged with the cam three, and the left end of the cam three is engaged with the cam four.

[0013] Preferably, the method comprises the following steps: S1, the rotating rod is in a horizontal position, at this time, the pointer points to "0" position, but it is not the full-off position of the measured device;

[0014] S2 rotating rod is set as full-off position of the measured device by rotating 45° anticlockwise from "0" position;

[0015] S3 rotating rod is set as full-on position of the measured device by rotating 45° clockwise from "0" position.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] Firstly, the measured device of the present application drives the rotating rod to rotate through the zero connected to one side of the rotating rod. The rotating rod is fixed as a whole with the connecting shaft through the square mounting hole, so that the rotating rod drives the connecting shaft to rotate at the same time. The large gear is installed on the connecting shaft and is fixed by using the locking screw, so that it can rotate with the connecting shaft. At the same time, it drives the small gear meshing therewith to rotate. Through the size transmission ratio, the rotating torque is reduced, and the rotating angular displacement is transmitted. The small gear is fixed on the cam shaft through the clamping groove, so that it can drive the cam shaft to rotate. The cam shaft drives the cam one, cam two, cam three and cam four fixed thereon by the locking screw to rotate together. The cam one, cam two, cam three and cam four are clamped together through the tooth disc machined on the side surface of the cam, and the protruding part of the cam triggers different travel switches in the rotating process. The installation position, installation angle and shape of the protruding part of the cam of each cam determine the order, displacement and angle of triggering the travel switch. After different travel switches are triggered, feedback signals are fed back to the upper controller to realize the control logic. The travel switches are isolated by using the insulating plate to avoid signal interference.

[0018] Secondly, the rotating rod rotation, gear transmission and cam rotation triggering mode of the present application can effectively reduce the triggering force of the travel switch, prevent the travel switch from being damaged by impact or fatigue, and the rotating triggering structure assembled by the triggering mechanism can change the triggering position by adjusting the overall rotation angle of the cam shaft, change the triggering interval, triggering position and triggering angle of the travel switch by adjusting the meshing angle of the tooth disc of the split gear or changing the shape and position of the protruding outer circle of the cam.

[0019] Thirdly, the present application can realize complex triggering logic and complete control requirements by matching cams with different numbers, shapes and installation angles. The cam triggering mechanism transmits force and position through the rotating rod and matching transmission gears, effectively reduces the stress of the travel switch, avoids damage to the travel switch, and ensures that the triggering mechanism can better realize the control function. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front view of the structure of the present application.

[0021] Figure 2 It is a whole view of the structure of the present application.

[0022] Figure 3 is a schematic view of the right side of the structure of the present application;

[0023] Figure 4 is a schematic view of the left side of the structure of the present application.

[0024] Wherein: 1, rotating rod; 2, angle indicator; 3, pointer; 5, terminal mounting plate; 6, support frame; 7, sleeve one; 8, large gear; 9, rotation stop screw; 10, adjusting sleeve; 11, spring washer one; 12, nut one; 13, thin nut; 14, connecting shaft; 15, sleeve two; 16, small gear; 17, nut two; 18, locking screw; 19, cam one; 20, cam two; 21, cam three; 22, cam four; 23, adjusting washer; 24, cam shaft; 25, mounting plate; 26, bolt one; 27, spring washer two; 28, sleeve three; 29, travel switch mounting plate one; 30, travel switch fixing rod; 31, nut three; 32, spring washer three; 33, travel switch; 34, insulating plate; 35, travel switch mounting plate two; 36, cover plate. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0026] The present application provides the following technical solutions: EMBODIMENT

[0027] Please refer to Figures 1-4 A novel cam trigger mechanism, comprising a support frame 6, the top end of the support frame 6 is fixedly connected with a cover plate 36;

[0028] The inner wall of the support frame 6 is installed with a camshaft 24, the surface of the camshaft 24 is installed with an adjusting washer 23, the surface of the camshaft 24 is installed with a cam four 22, the surface of the camshaft 24 is installed with a cam three 21, the surface of the camshaft 24 is installed with a cam two 20, the surface of the camshaft 24 is installed with a cam one 19, the surface of the cam one 19 is screwed with a locking screw 18, the surface of the camshaft 24 is installed with a pinion 16, the left end of the camshaft 24 is installed with a sleeve three 28, the right end of the camshaft 24 is installed with a sleeve two 15, the top end of the pinion 16 is engaged with a gear wheel 8, the inner wall of the gear wheel 8 is fixedly connected with a connecting shaft 14, the surface of the connecting shaft 14 is screwed with a thin nut 13, the surface of the connecting shaft 14 is screwed with a nut one 12, the surface of the connecting shaft 14 is installed with a spring washer one 11, the surface of the connecting shaft 14 is installed with an adjusting sleeve 10, the surface of the connecting shaft 14 is screwed with a rotation stopping screw 9, the left end of the connecting shaft 14 is installed with a sleeve one 7, the inner wall of the support frame 6 is installed with a travel switch mounting plate two 35, the bottom end of the travel switch mounting plate two 35 is fixedly connected with a travel switch mounting plate one 29, the inner wall of the travel switch mounting plate one 29 is installed with a travel switch fixing rod 30, the surface of the travel switch fixing rod 30 is installed with an insulating plate 34, the surface of the travel switch fixing rod 30 is installed with a travel switch 33.

[0029] By the above technical scheme, the support frame 6 is made of bent plate and plate bending, and is used as a base to install the travel switch installation plate two 35 and the installation plate 25. The sleeve one 7 and the sleeve two 15 are installed on the support frame 6 in an interference fit, and are used to fix the connecting shaft 14 and the cam shaft 24. After the large gear 8 is placed in the indicated position, the connecting shaft 14 is transmitted, and then the adjusting sleeve 10 and the rotating rod 1 are installed. Finally, the spring washer one 11 is installed, the nut one 12 is tightened, and the thin nut 13 is used to tighten the rotation stop. The pinion 16, the cam one 19, the cam two 20, the cam three 21, the cam four 22, and the nut two 17 are placed in the indicated position, and after the cam angle is determined, the gear teeth of the cams are meshed and tightly attached to each other. Then, the cam shaft 24 is inserted, and attention should be paid to meshing the pinion 16 and the large gear 8 when the cam shaft 24 is inserted. After adjusting the positions of all the cams, the cams are fixed on the cam shaft 24 using the nut two 17. Finally, the mounting holes of the rotation stop screw 9 and the locking screw 18 are drilled, three locking screws 18 are screwed in, the large gear 8 and all the cams are fixed, the travel switch 33 and the insulating plate 34 are placed in the U-shaped groove of the travel switch installation plate two 35 in the indicated position, and then the travel switch fixing rod 30 is inserted. The travel switch 33 is fixed by screwing the nut three 31 and the spring washer three 32 at both ends. The terminal installation plate 5 is welded on the travel switch installation plate two 35 for installing the wiring terminal 4. After the whole installation is completed, the travel switch installation plate two 35 and the zero thereon are fixed on the support frame 6 using screws. The pointer 3 is installed on the connecting shaft 14 and rotates accordingly. The angle indicator 2 is pasted on the support frame 6 for angle indication. Finally, the cover plate 36 is installed on the support frame 6 using screws for protecting the internal equipment. After the whole assembly is completed, the trigger mechanism of the present application can be installed in a suitable position. The trigger mechanism of the present application should be installed vertically, and the upper part is provided with the cover plate 36.

[0030] Specifically, the terminal installation plate 5 is fixedly connected to the top end of the travel switch installation plate two 35. The spring washer three 32 is installed on the surface of both ends of the travel switch fixing rod 30. The nut three 31 is threadedly connected to the surface of both ends of the travel switch fixing rod 30.

[0031] Through the above technical scheme, the nut three 31 is tightened to compress the spring washer three 32 to fix the travel switch fixing rod 30.

[0032] Specifically, the installation plate 25 is installed on the left end surface of the support frame 6. The installation plate 25 is threadedly connected to the left end of the support frame 6 through the bolt one 26. The surface of the bolt one 26 is provided with the spring washer two 27.

[0033] Through the above technical scheme, the installation of the cam shaft 24 is reinforced through the installation plate 25.

[0034] Specific, the surface of the connecting shaft 14 is mounted with a rotating rod 1, the surface of the connecting shaft 14 is mounted with a pointer 3, the right end of the support frame 6 is fixedly connected with an angle indicator 2.

[0035] Through the above technical scheme, the operation of the angle indicator 2 control device is observed.

[0036] Specific, the inner wall of the support frame 6 is provided with a support plate, the left end of the connecting shaft 14 is rotatably connected with the support plate, and the right end of the camshaft 24 penetrates the support plate and is rotatably connected with the support frame 6.

[0037] Through the above technical scheme, the camshaft 24 and the connecting shaft 14 are stably installed in the inside of the support frame 6.

[0038] Specific, the travel switch 33 is provided with five, and the five travel switches 33 are linearly arranged along the surface of the travel switch fixing rod 30.

[0039] Through the above technical scheme, after different travel switches 33 are triggered, feedback signals are given to the upper controller to realize control logic; the travel switches 33 are isolated by using the insulating plate 34 to avoid signal interference

[0040] Specific, the left end of the cam one 19 is engaged with the cam two 20, the left end of the cam two 20 is engaged with the cam three 21, and the left end of the cam three 21 is engaged with the cam four 22.

[0041] Through the above technical scheme, the cam one 19, the cam two 20, the cam three 21 and the cam four 22 are clamped together through the tooth disc machined on the side surface of the cam, and the protruding part of the cam triggers different travel switches 33 in the rotating process. The installation position, the installation angle and the shape of the protruding part of each cam determine the order, the displacement and the angle of triggering the travel switch 33.

[0042] In use, the measured device drives the rotating rod 1 to rotate through the zero connected to one side of the rotating rod 1. The rotating rod 1 is fixed to the connecting shaft 14 through the square mounting hole, so that the rotating rod 1 drives the connecting shaft 14 to rotate at the same time. The large gear 8 is installed on the connecting shaft 14 and is fixed by the stop screw 9, so that it can rotate with the connecting shaft 14 and drive the small gear 16 engaged therewith to rotate at the same time. Through the size transmission ratio, the rotating torque is reduced to transmit the rotating angular displacement. The small gear 16 is fixed on the camshaft 24 through the clamping groove, so that it can drive the camshaft 24 to rotate. The camshaft 24 drives the cam 1 19, the cam 2 20, the cam 3 21 and the cam 4 22 fixed thereon through the locking screw 18 to rotate at the same time. The cam 1 19, the cam 2 20, the cam 3 21 and the cam 4 22 are clamped together through the tooth disc machined on the side surface of the cam. In the rotating process, the protruding part of the cam triggers different travel switches 33. The order, displacement and angle of triggering the travel switches 33 are determined by the installation position, installation angle and shape of the protruding part of the cam of each cam. After different travel switches 33 are triggered, feedback signals are fed back to the upper controller to realize control logic. The insulation plates 34 are used between the travel switches 33 to avoid signal interference. Embodiment

[0043] A working method of a novel cam triggering mechanism, comprising the following steps: S1, the rotating rod 1 is in a horizontal position, at this time, the pointer 3 points to "0" position, but it is not the full-off position of the measured device;

[0044] S2, the rotating rod 1 is rotated counterclockwise from the "0" position to a position 45° away, which is set as the full-off position of the measured device;

[0045] S3, the rotating rod 1 is rotated clockwise from the "0" position to a position 45° away, which is set as the full-on position of the measured device.

[0046] Through the above technical scheme, the control logic is realized, and the insulation plates 34 are used between the travel switches 33 to avoid signal interference.

[0047] In use, the order, displacement and angle of the switch, after different travel switches 33 are triggered, feedback signals are fed back to the upper controller to realize control logic, and the insulation plates 34 are used between the travel switches 33 to avoid signal interference.

[0048] Working principle: the measured device drives the rotating rod 1 to rotate through the zero connected to one side of the rotating rod 1. The rotating rod 1 is fixed as a whole with the connecting shaft 14 through the square mounting hole, so that the rotating rod 1 drives the connecting shaft 14 to rotate at the same time. The large gear 8 is installed on the connecting shaft 14 and is fixed by using the stop screw 9. It can rotate with the connecting shaft 14, and at the same time, drive the small gear 16 engaged with it to rotate. Through the size transmission ratio, the rotating torque is reduced, the rotating angular displacement is transmitted, the small gear 16 is fixed on the camshaft 24 through the clamping groove, and can drive the camshaft 24 to rotate, the camshaft 24 drives the cam 1 19, the cam 2 20, the cam 3 21 and the cam 4 22 fixed thereon through the locking screw 18 to rotate together, the cam 1 19, the cam 2 20, the cam 3 21 and the cam 4 22 are clamped together through the tooth disc machined on the side of the cam, and the protruding part of the cam triggers different travel switches 33 in the rotating process. The order, displacement and angle of triggering the travel switch 33 are determined by the installation position, installation angle and shape of the protruding part of the cam. After different travel switches 33 are triggered, feedback signals are fed back to the upper controller to realize control logic; the insulation plate 34 is used between the travel switches 33 to avoid signal interference;

[0049] In addition, through the rotating mode of the rotating rod 1, gear transmission and cam rotation triggering, the triggering force of the travel switch 33 can be effectively reduced to prevent the travel switch 33 from being damaged by impact or fatigue. The rotating triggering structure assembled by the triggering mechanism can change the triggering position by adjusting the overall rotation angle of the camshaft 24, change the triggering interval, triggering position and triggering angle of the travel switch 33 by adjusting the meshing angle of the tooth disc of the split gear or changing the shape and position of the protruding outer circle of the cam, and realize complex triggering logic and complete control requirements by matching different numbers, shapes and installation angles of the cams. The cam triggering mechanism transmits force and position through the rotating rod 1 and matching transmission gears, effectively reduces the stress of the travel switch 33, avoids damage to the travel switch 33, and ensures that the triggering mechanism can better realize the control function.

[0050] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A new type of cam trigger mechanism comprising a support frame (6) characterized in that: The top end of the support frame (6) is fixedly connected with a cover plate (36); The inner wall of the support frame (6) is provided with a camshaft (24), the surface of the camshaft (24) is provided with an adjusting washer (23), the surface of the camshaft (24) is provided with a cam four (22), the surface of the camshaft (24) is provided with a cam three (21), the surface of the camshaft (24) is provided with a cam two (20), the surface of the camshaft (24) is provided with a cam one (19), the surface of the cam one (19) is threadedly connected with a locking screw (18), the surface of the camshaft (24) is provided with a pinion (16), the left end of the camshaft (24) is provided with a sleeve three (28), the right end of the camshaft (24) is provided with a sleeve two (15), the top end of the pinion (16) is engaged with a gear wheel (8), the inner wall of the gear wheel (8) is fixedly connected with a connecting shaft (14), the surface of the connecting shaft (14) is threadedly connected with a thin nut (13), the surface of the connecting shaft (14) is threadedly connected with a nut one (12), the surface of the connecting shaft (14) is provided with a spring washer one (11), the surface of the connecting shaft (14) is provided with an adjusting sleeve (10), the surface of the connecting shaft (14) is threadedly connected with a rotation-stopping screw (9), the left end of the connecting shaft (14) is provided with a sleeve one (7), the inner wall of the support frame (6) is provided with a travel switch mounting plate two (35), the bottom end of the travel switch mounting plate two (35) is fixedly connected with a travel switch mounting plate one (29), the inner wall of the travel switch mounting plate one (29) is provided with a travel switch fixing rod (30), the surface of the travel switch fixing rod (30) is provided with an insulating plate (34), and the surface of the travel switch fixing rod (30) is provided with a travel switch (33).

2. A new cam trigger mechanism according to claim 1, characterized in that: The top end of the travel switch mounting plate two (35) is fixedly connected with a terminal mounting plate (5), and the surfaces of the two ends of the travel switch fixing rod (30) are provided with spring washers three (32), and the surfaces of the two ends of the travel switch fixing rod (30) are threadedly connected with nuts three (31).

3. A new type of cam trigger mechanism according to claim 1, characterized in that: The left end surface of the support frame (6) is provided with a mounting plate (25), the mounting plate (25) is threadedly connected with the left end of the support frame (6) through a bolt one (26), and the surface of the bolt one (26) is provided with a spring washer two (27).

4. A new cam trigger mechanism as claimed in claim 1, wherein: The surface of the connecting shaft (14) is provided with a rotating rod (1), the surface of the connecting shaft (14) is provided with a pointer (3), and the right end of the support frame (6) is fixedly connected with an angle indicator (2).

5. A new type of cam trigger mechanism as claimed in claim 1, wherein: The inner wall of the support frame (6) is provided with a support plate, the left end of the connecting shaft (14) is rotatably connected with the support plate, and the right end of the camshaft (24) penetrates through the support plate and is rotatably connected with the support frame (6).

6. A new cam trigger mechanism as claimed in claim 1, wherein: The travel switch (33) is provided with five, and the five travel switches (33) are linearly arranged on the surface of the travel switch fixing rod (30).

7. A new type of cam trigger mechanism as claimed in claim 1, wherein: The left end of the cam one (19) engages with the cam two (20), the left end of the cam two (20) engages with the cam three (21), and the left end of the cam three (21) engages with the cam four (22).

Images