Feedback switch

Abstract

The utility model relates to the technical field of switches, and discloses a feedback switch which comprises a feedback box, a fixed outer plate is fixedly arranged at the edge position of the top of the feedback box, a top cover plate is fixedly arranged at the top of the fixed outer plate, and one end of the upper surface of the top cover plate is provided with a connecting base plate through a bolt and is communicated with the top cover plate. An observation window is fixedly and slidably contacted with the top of the connecting base plate, a feedback indication window is rotatably arranged on the outer side of the observation window, an outer sleeve is fixedly arranged in the middle of one side of the inner wall of the feedback box, the inner wall of the outer sleeve is slidably connected with the outer side of the inner pipe, and a top power round box is fixedly arranged on the top of the inner pipe. According to the feedback switch, components such as a sliding rod, an inner pipe and a limiting ball are arranged, the sliding rod drives the inner side of the inner pipe and the inner side of the outer sleeve to slide under the action of external force, and the sliding rod is limited and fixed through the limiting ball, so that the top cover plate and the components above are fixed, and the feedback switch is installed; and the sealing effect after installation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of switches, in particular to a feedback switch. Background Art

[0002] Industrial valves can be affected by factors such as air pressure or controlled by the system to produce corresponding actions. In the prior art, the devices related to the purpose of detection in the valve include valve core, valve connecting rod and valve position feedback switch. The in-position switch with feedback indication is a common feedback switch used in on-site pneumatic stop gates.

[0003] In actual use, due to frequent abnormal feedback, the feedback indicator and the rotating shaft are detachable, and the feedback indicator and the housing are tightly fitted, the indicator may become stuck when the valve is frequently opened and closed, affecting the feedback signal. Due to long-term wear, the feedback indicator and the rotating shaft are disengaged, and the feedback situation cannot be viewed through the display on site. After adjusting the feedback cam of the valve, when installing the feedback indicator, it is easy to cause slight rotation of the rotating shaft, which may cause slight rotation of the cam and change the feedback, affecting the maintenance efficiency. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a feedback switch, which has a feedback indicator window with alternating black and transparent layers for observing the internal structure. When the outer shell is round, a pointer with a curved structure is used, and the indication is more accurate. When the outer shell is square, a pointer with a parallel structure is used. There is sufficient space between the pointer and the outer shell, and no friction is generated with the outer shell, and the indication will not fall off or get stuck due to vibration, friction, etc., thereby reducing the maintenance of the machinery and the cost investment of the feedback switch when in use. The utility model solves the problems of indication getting stuck and affecting the feedback signal, and the feedback indication and the rotating shaft being disengaged due to long-term wear, so that the feedback situation cannot be viewed through the display on site. After the feedback cam of the valve is adjusted, when the feedback indicator is installed, it is easy to cause the rotating shaft to rotate slightly, which may cause the cam to rotate slightly, the feedback changes, and the maintenance efficiency is affected.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a feedback switch, including a feedback box, a fixed outer plate is fixedly provided at the edge position of the top of the feedback box, a top cover plate is fixedly provided on the top of the fixed outer plate, a connecting pad is provided at one end of the upper surface of the top cover plate through bolts and is connected to the top cover plate, an observation window is fixedly and slidably contacted on the top of the connecting pad, and a feedback indication window is rotatably provided on the outer side of the observation window.

[0007] An external sleeve is fixedly provided in the middle of one side of the inner wall of the feedback box, the inner wall of the external sleeve is slidably connected to the outer side of the inner tube, a top power round box is fixedly provided on the top of the inner tube, a sliding rod is slidably inserted in the middle of the top power round box, a round rod is fixedly provided near the bottom of the sliding rod, the outer side of the round rod is slidably connected to the inner wall of the inner tube, and the top of the inner tube is fixedly connected to the top of the inner wall of the pressing groove fixedly provided at the bottom position of the top cover plate.

[0008] Preferably, the four corners of the fixed outer plate are all chamfered, and the four corners of the fixed outer plate are all provided with sealing pads by screw clamping, and the area of ​​the fixed outer plate is larger than the area of ​​the bottom feedback box.

[0009] Preferably, the observation window is configured as a circle, a card slot is fixedly provided on the top of the inner wall of the observation window, the inner wall of the card slot is engaged with the card rail protruding from the upper surface of the top cover plate, the feedback indicator window outside the observation window is configured as a circular cover window with alternating black and transparent colors, and the card slot is configured as an inwardly concave "mouth" shape.

[0010] Preferably, a return spring is fixedly arranged at the bottom of the inner wall of the top power round box, the middle part of the return spring is slidably sleeved on the outer surface of the sliding rod near the top, the diameter of the top power round box is larger than the inner ring diameter of the inner tube, and the bottom of the top power round box is in sliding contact with the top of the outer sleeve.

[0011] Preferably, two identical slide grooves are fixedly provided near the bottom of the slide rod, and the slide grooves are symmetrically arranged on both sides of the round rod, and the length of the slide groove is the same as the diameter of the limiting ball.

[0012] Preferably, limiting circular holes are fixedly provided near the bottom of the inner tube and the outer sleeve, the diameter of the limiting circular hole near the outer sleeve is smaller than the diameter of the limiting ball, the diameter of the limiting circular hole at the inner tube position is larger than the diameter of the limiting circular hole at the outer sleeve, and a limiting ball is slidably provided on the inner wall of the limiting circular hole at the inner tube position.

[0013] Preferably, a cylinder is fixedly provided at the bottom of the left end of the feedback box, the top of the cylinder is connected to the bottom of the feedback box, a rotating shaft is fixedly provided at the top of the cylinder, a connecting rod is fixedly provided at the top of the rotating shaft, and a feedback pointer is clamped on the top of the connecting rod.

[0014] (II) Beneficial effects

[0015] Compared with the prior art, the utility model provides a feedback switch, which has the following beneficial effects:

[0016] 1. The feedback switch is provided with components such as a sliding rod, an inner tube and a limiting ball. The sliding rod is driven to slide inside the inner tube and the outer sleeve under the action of an external force. The limiting ball limits and fixes the sliding rod, thereby fixing the top cover plate and the components above, and is used for installing the feedback switch to increase the sealing effect after installation.

[0017] 2. The feedback switch is equipped with a feedback indication window with alternating black and transparent colors for observing the internal structure. When the outer shell is round, the pointer is used in a curved structure, and the indication is more accurate. When the outer shell is square, the pointer is used in a parallel structure. There is sufficient space between the pointer and the outer shell, and no friction will be generated with the outer shell, which will not cause the indication to fall off or get stuck due to vibration, friction, etc., thereby reducing the maintenance of the machine and the cost investment of the feedback switch when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional cross-sectional structure of the feedback box of the utility model;

[0019] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the internal three-dimensional structure of the observation window of the utility model;

[0021] Figure 4 It is a schematic diagram of the three-dimensional cross-sectional structure of the external sleeve of the utility model.

[0022] In the figure: 1. Feedback box; 2. Sealing pad; 3. Top cover; 4. Press groove; 5. Connecting rod; 6. Observation window; 7. Feedback indication window; 8. Connecting pad; 9. Rotating shaft; 10. External sleeve; 11. Inner tube; 12. Cylinder; 13. Sliding rod; 14. Top power round box; 15. Feedback pointer; 16. Limiting ball; 17. Round rod; 18. Sliding groove; 19. Reset spring; 20. Fixed outer plate; 21. Slot. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The following is combined with Figure 1-Figure 4 This application is described in further detail.

[0025] The embodiment of the present application discloses a feedback switch, including a feedback box 1, a cylinder 12 is fixedly arranged at the bottom of the left end of the feedback box 1, the top of the cylinder 12 is connected to the bottom of the feedback box 1, a rotating shaft 9 is fixedly arranged at the top of the cylinder 12, a connecting rod 5 is fixedly arranged at the top of the rotating shaft 9, a feedback pointer 15 is clamped at the top of the connecting rod 5, and the feedback pointer 15 is installed on the rotating shaft 9, with a symmetrical 180° structure, and is set to be fixed. When the feedback box 1 is round, the pointer is also bent, and when the feedback box 1 is square, the pointer is a parallel structure. There is enough space between the feedback pointer 15 and the transparent shell to prevent the pointer and the shell from rubbing. A fixed outer plate 20 is fixedly arranged at the edge position of the top of the feedback box 1, and the four corners of the fixed outer plate 20 are all rounded, and the outer side of the arc is prevented from cutting the user when in use. The four corners of the fixed outer plate 20 are clamped by screws and are provided with sealing pads 2, and the sealing pads 2 increase the stability after the screws are installed. The area of ​​the fixed outer plate 20 is larger than the area of ​​the bottom feedback box 1.

[0026] A top cover plate 3 is fixedly provided on the top of the fixed outer plate 20, one end of the upper surface of the top cover plate 3 is provided with a connecting pad 8 by bolts and is connected to the top cover plate 3, an observation window 6 is fixedly slidably contacted on the top of the connecting pad 8, the observation window 6 is set to be circular, a card slot 21 is fixedly provided on the top of the inner wall of the observation window 6, which is engaged with the internal fasteners through the card slot 21, so as to facilitate the disassembly of the observation window 6, the inner wall of the card slot 21 is engaged with the protruding card rail on the upper surface of the top cover plate 3, the feedback indication window 7 on the outer side of the observation window 6 is set to be a circular cover window with alternating black and transparent colors, when the valve is closed, the CLOSE indication rotates to the transparent window, the card slot 21 is set to be concave inwardly in the shape of a "mouth", when the valve is opened, OPEN is connected to the valve shaft 9 and rotates to the transparent window, and the indication is more accurate.

[0027] A feedback indicating window 7 is rotatably provided on the outer side of the observation window 6 .

[0028] An external sleeve 10 is fixedly provided in the middle of one side of the inner wall of the feedback box 1, and the inner wall of the external sleeve 10 is slidably connected to the outer side of the inner tube 11. Limiting circular holes are fixedly provided near the bottom of the inner tube 11 and the external sleeve 10. The diameter of the limiting circular hole near the external sleeve 10 is smaller than the diameter of the limiting ball 16, and the outer diameter is smaller than the inner diameter, so as to prevent the limiting ball 16 from excessively moving outward and detaching from the external sleeve 10, and ensure that the limiting ball 16 has stability while achieving the limiting effect. The diameter of the limiting circular hole at the position of the inner tube 11 is larger than the diameter of the limiting circular hole of the external sleeve 10, and the limiting ball 16 is slidably provided on the inner wall of the limiting circular hole at the position of the inner tube 11.

[0029] A top power round box 14 is fixedly provided on the top of the inner tube 11, and a return spring 19 is fixedly provided on the bottom of the inner wall of the top power round box 14. The middle part of the return spring 19 is slidably sleeved on the outer surface of the sliding rod 13 near the top. After the return spring 19 is subjected to pressure, it is convenient to provide assistance for the reset of the sliding rod 13. The diameter of the top power round box 14 is larger than the inner ring diameter of the inner tube 11. The larger diameter of the top power round box 14 avoids falling into the inside of the outer sleeve 10, limits the downward position of the top power round box 14, and the bottom of the top power round box 14 is in sliding contact with the top of the outer sleeve 10.

[0030] A sliding rod 13 is slidably inserted in the middle of the top power round box 14, and two identical sliding grooves 18 are fixedly provided near the bottom of the sliding rod 13. When the sliding groove 18 moves to the position of the limiting ball 16, the limiting ball 16 moves toward the sliding rod 13, and the limiting ball 16 is freed from the restriction on the inner tube 11. The sliding grooves 18 are symmetrically arranged on both sides of the round rod 17. The length of the sliding grooves 18 is the same as the diameter of the limiting ball 16, which facilitates the sliding of the limiting ball 16.

[0031] A round rod 17 is fixedly provided near the bottom of the slide rod 13 , the outer side of the round rod 17 is slidably connected to the inner wall of the inner tube 11 , and the top of the inner tube 11 is fixedly connected to the top of the inner wall of the pressing groove 4 fixedly provided at the bottom position of the top cover plate 3 .

[0032] The working principle of a feedback switch in an embodiment of the present application is as follows: when in use, a feedback indicator is installed on the valve body shaft 9, and a black and transparent feedback indicator window 7 is installed on the outside of the feedback box 1. When the valve is closed, the CLOSE indicator rotates to the transparent window. When the valve is open, the OPEN indicator is connected to the valve shaft 9 and rotates to the transparent window. An integrated indicator needle is installed on the shaft 9, which has a symmetrical 180° structure and is set to be fixed. When the feedback box 1 is round, the pointer is also bent. When the feedback box 1 is square, the pointer is in a parallel structure. There is enough space between the feedback pointer 15 and the transparent shell to prevent friction between the pointer and the shell. The shell is a transparent structure, and the internal structure can be observed through the observation window 6. There are switch marks and scales on the outer shell. When the valve is closed, the pointer turns to the closed scale, and when the valve is opened, the pointer turns to the open scale. When the top cover 3 needs to be assembled with the feedback box 1, the top cover 3 drives the slide rod 13 and the inner tube 11 to be inserted into the interior of the outer sleeve 10. When the round rod 17 at the bottom of the slide rod 13 contacts the limit ball 16, due to the larger diameter of the round rod 17, the two limit balls 16 move outward at the same time. When the round rod 17 moves to the bottom of the limit ball 16, the slide groove 18 above the round rod 17 is parallel to the limit ball 16, and the limit ball 16 moves inward. When the feedback switch is to be disassembled, the circular plate at the bottom of the slide groove 18 below the top cover plate 3 is slightly pulled upward to push the limiting ball 16 outward, so that the slide rod 13 can move upward, thereby moving the inner tube 11 away from the outer sleeve 10, thereby facilitating the disassembly of the feedback switch while avoiding damage to the switch.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A feedback switch, comprising a feedback box (1), characterized in that: At the edge position of the top of the feedback box (1), a fixed outer plate (20) is fixedly arranged. At the top of the fixed outer plate (20), a top cover plate (3) is fixedly arranged. One end of the upper surface of the top cover plate (3) is provided with a connecting backing plate (8) through bolts and is communicated with the top cover plate (3). A viewing window (6) is fixedly slidably contacted at the top of the connecting backing plate (8). A feedback indicating window (7) is rotatably arranged outside the viewing window (6). In the middle of one side of the inner wall of the feedback box (1), an external sleeve (10) is fixedly arranged. The inner wall of the external sleeve (10) is slidably connected with the outer side of the inner tube (11). At the top of the inner tube (11), a top power circular box (14) is fixedly arranged. A sliding rod (13) is slidably inserted in the middle of the top power circular box (14). Near the bottom position of the sliding rod (13), a circular rod (17) is fixedly arranged. The outer side of the circular rod (17) is slidably connected with the inner wall of the inner tube (11). The top of the inner tube (11) is fixedly connected with the top of the inner wall of a pressure groove (4) fixedly arranged at the bottom of the top cover plate (3).

2. A feedback switch according to claim 1, characterized in that: The four corners of the fixed outer plate (20) are all rounded. At the four corners of the fixed outer plate (20), sealing backing plates (2) are fixedly arranged through screw clamping. The area of the fixed outer plate (20) is larger than the area of the bottom feedback box (1).

3. A feedback switch according to claim 1, characterized in that: The viewing window (6) is set to be circular. At the top of the inner wall of the viewing window (6), a clamping groove (21) is fixedly arranged. The inner wall of the clamping groove (21) is clamped with a clamping rail protruding from the upper surface of the top cover plate (3). The feedback indicating window (7) outside the viewing window (6) is set to be a circular cover window with black and transparent intervals. The clamping groove (21) is set to be an inward concave "mouth" shape.

4. A feedback switch according to claim 1, characterized in that: At the bottom of the inner wall of the top power circular box (14), a return spring (19) is fixedly arranged. The middle of the return spring (19) is slidably sleeved on the outer surface of the sliding rod (13) near the top. The diameter of the top power circular box (14) is larger than the inner diameter of the inner tube (11). The bottom of the top power circular box (14) is slidably contacted with the top of the external sleeve (10).

5. A feedback switch according to claim 1, characterized in that: At the near-bottom position of the sliding rod (13), two identical sliding grooves (18) are fixedly arranged. The sliding grooves (18) are symmetrically arranged on both sides of the circular rod (17). The length of the sliding groove (18) is the same as the diameter of the limiting spherical ball (16).

6. A feedback switch according to claim 1, characterized in that: At the near-bottom positions of the inner tube (11) and the external sleeve (10), limiting round holes are fixedly arranged. The diameter of the limiting round hole near the external sleeve (10) is smaller than the diameter of the limiting spherical ball (16). The diameter of the limiting round hole at the inner tube (11) position is larger than the diameter of the limiting round hole of the external sleeve (10). A limiting spherical ball (16) is slidably arranged on the inner wall of the limiting round hole at the inner tube (11) position.

7. A feedback switch according to claim 1, characterized in that: At the bottom of the left end of the feedback box (1), a cylinder (12) is fixedly arranged. The top of the cylinder (12) is communicated with the bottom of the feedback box (1). At the top of the cylinder (12), a rotating shaft (9) is fixedly arranged. At the top of the rotating shaft (9), a connecting rod (5) is fixedly arranged. A feedback pointer (15) is clamped at the top of the connecting rod (5).

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