Waterproof limit switch

Abstract

The utility model discloses a waterproof limit switch, which belongs to the technical field of limit switches, and comprises a protective shell, a sealing cover is arranged in the protective shell in a penetrating manner, the upper surface of the sealing cover is fixedly connected with a mounting groove, a sealing cover is arranged in the mounting groove in a penetrating manner, a limit groove is formed in the surface of the mounting groove, and the limit groove is fixedly connected with the upper surface of the sealing cover. The waterproof limit switch comprises a sealing cover, a limiting groove is formed in the lower surface of the sealing cover, a limiting rod is arranged in the limiting groove in a penetrating mode, a first spring is connected to the surface of the limiting rod in a sleeving mode, and a telescopic rod is fixedly connected to the lower surface of the sealing cover. Under the cooperation of a limiting rod and a first spring, a clamping block can be tightly attached to the interior of a clamping groove in the surface of a sealing cover, the situation that a protective cover is separated from the interior of a mounting groove in the use process is avoided, and therefore the waterproof effect on the limiting switch body is achieved.

Description

Technical Field

[0001] This utility model relates to the field of limit switch technology, and more specifically, to a waterproof limit switch. Background Technology

[0002] Limit switches, also known as travel switches, are a type of position switch and a commonly used low-current control electrical appliance. They utilize the collision of moving parts in production machinery to actuate their contacts, thereby connecting or disconnecting the control circuit to achieve a certain control purpose. Typically, these switches are used to limit the position or travel of mechanical movement, causing the moving machinery to automatically stop, reverse, change speed, or automatically reciprocate at a certain position or travel. However, existing limit switches are inconvenient for workers to install and fix during the installation process, and the inside of the limit switches is prone to water leakage. Utility Model Content

[0003] (1) Technical problems to be solved

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a waterproof limit switch, which has the characteristics of waterproofing the limit switch body and facilitating installation and fixing by workers.

[0005] (2) Technical solution

[0006] To achieve the above objectives, this utility model provides a waterproof limit switch, including a protective shell. A sealing cover is inserted inside the protective shell. An installation groove is fixedly connected to the upper surface of the sealing cover. A sealing shield is inserted inside the installation groove. A limit groove is formed on the surface of the installation groove. A limit rod is inserted inside the limit groove. A first spring is sleeved on the surface of the limit rod. A telescopic rod is fixedly connected to the lower surface of the sealing cover. A second spring is sleeved on the surface of the telescopic rod. A push plate is fixedly connected to the bottom end of the telescopic rod. A push rod is fixedly connected to the upper surface of the push plate. A sleeve is inserted through the surface of the installation groove. The push rod passes inside the sleeve. A limit switch is provided inside the protective shell. The limit switch body has a push plate positioned directly above its surface. A fixed plate is fixedly connected inside the protective shell. A bearing is fixedly connected to the surface of the fixed plate to allow a rotating shaft to pass through it. A first gear is fixedly connected to the surface of the rotating shaft. A bearing is fixedly connected to the surface of the fixed plate to allow a threaded tube to pass through it. A second gear is fixedly connected to the surface of the threaded tube. The first and second gears mesh with each other. A threaded post passes through the inside of the threaded tube. A connecting plate is fixedly connected to the bottom end of the threaded post. A fixed shaft is fixedly connected to the lower surface of the connecting plate. A limit plate is fixedly connected to the surface of the limit switch body, and a fixing hole is formed on the surface of the limit plate.

[0007] When using the waterproof limit switch of this technical solution, the cooperation of the limit rod and the first spring allows the locking block to fit tightly into the slot on the surface of the sealing cover, preventing the protective cover from detaching from the mounting slot during use. This waterproofs the limit switch body. Furthermore, by rotating the shaft through the knob, the cooperation of the first and second gears allows the threaded column to move the fixed shaft on the lower surface of the connecting plate into the fixed hole, facilitating the installation and fixing of the limit switch body.

[0008] Furthermore, a knob is fixedly connected to the top of the rotating shaft, a sealing gasket is fitted onto the surface of the sealing cover, the mounting groove and the sealing cover are fixedly connected by threads, and both the sealing gasket and the sealing cover are made of elastic material.

[0009] Furthermore, a positioning post is fixedly connected to the lower surface of the limit switch body, and a positioning groove is opened inside the protective shell. The positioning post and the positioning groove are matched. There are two sets of positioning posts and positioning grooves, which are symmetrically arranged on the lower surface of the limit switch body.

[0010] Furthermore, there are two sets of limiting grooves, which are symmetrically arranged on the surface of the mounting groove. One end of the limiting rod is fixedly connected to a locking block, and the surface of the sealing cover is provided with a locking groove, and the locking block is engaged inside the locking groove.

[0011] Furthermore, there are two sets of limiting plates, which are symmetrically arranged on both sides of the limiting switch body. The fixing shaft and fixing hole are matched, and there are multiple sets of fixing shaft and fixing hole, which are evenly arranged on the lower surface of the connecting plate.

[0012] Furthermore, both the protective shell and the sealing cover have threaded holes on their surfaces, and fixing bolts are inserted inside the threaded holes. There are multiple threaded holes and fixing bolts, which are evenly arranged on the surface of the sealing cover.

[0013] (3) Beneficial effects

[0014] In summary, this utility model has the following beneficial effects:

[0015] 1. This waterproof limit switch, by setting a limit rod and a first spring, allows the locking block to fit tightly into the groove on the surface of the sealing cover when the operator uses the device to install the limit switch for waterproofing. This prevents the protective cover from coming off the inside of the mounting groove during use, thus achieving the effect of waterproofing the limit switch body.

[0016] 2. This waterproof limit switch, by setting a threaded tube and a threaded post, allows the operator to install the limit switch in a waterproof manner by simply turning the knob to rotate the shaft. With the cooperation of the first and second gears, the threaded post can move the fixed shaft on the lower surface of the connecting plate into the fixed hole, thus facilitating the operator to install and fix the limit switch body. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the limit switch body in this utility model;

[0021] Figure 4 This is a three-dimensional structural diagram of the sealing cover in this utility model;

[0022] Figure 5 This utility model Figure 2 A magnified structural diagram of point A in the middle.

[0023] The labels in the attached diagram are:

[0024] 1. Protective shell; 2. Sealing cover; 3. Limit switch body; 4. Mounting groove; 5. Sealing cover; 6. Limit groove; 7. Limit rod; 8. First spring; 9. Locking block; 10. Locking groove; 11. Telescopic rod; 12. Push plate; 13. Push rod; 14. Second spring; 15. Fixing plate; 16. Rotating shaft; 17. First gear; 18. Threaded tube; 19. Knob; 20. Second gear; 21. Threaded post; 22. Connecting plate; 23. Fixing shaft; 24. Positioning groove; 25. Positioning post; 26. Limiting plate; 27. Fixing hole; 28. Sealing gasket; 29. ​​Threaded hole; 30. Fixing bolt; 31. Sleeve. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the technical solutions in the specific embodiments of this utility model are clearly and completely described below to further illustrate this utility model. Obviously, the specific embodiments described are only a part of the embodiments of this utility model, and not all of them.

[0026] Example:

[0027] The following is in conjunction with the appendix Figure 1-5 The present invention will be described in further detail below.

[0028] Please see Figure 1-5 This utility model provides a technical solution: a waterproof limit switch, including a protective shell 1, a sealing cover 2 passing through the inside of the protective shell 1, an installation groove 4 fixedly connected to the upper surface of the sealing cover 2, a sealing cover 5 passing through the inside of the installation groove 4, a limit groove 6 formed on the surface of the installation groove 4, a limit rod 7 passing through the inside of the limit groove 6, and a first spring 8 sleeved on the surface of the limit rod 7. By setting the limit rod 7 and the first spring 8, the locking block 9 can be tightly fitted onto the surface of the sealing cover 5 under the cooperation of the limit rod 7 and the first spring 8. Inside the slot 10, to prevent the protective cover from detaching from the mounting slot 4 during use, thus achieving a waterproof effect for the limit switch body 3, a telescopic rod 11 is fixedly connected to the lower surface of the sealing cover 2, a second spring 14 is sleeved on the surface of the telescopic rod 11, a push plate 12 is fixedly connected to the bottom end of the telescopic rod 11, and a push rod 13 is fixedly connected to the upper surface of the push plate 12. A sleeve 31 is inserted through the surface of the mounting slot 4, and the push rod 13 is inserted inside the sleeve 31. The limit switch body 3 is installed inside the protective shell 1, and the push plate 12 is... The limit switch body 3 is positioned directly above the surface of the protective shell 1. A fixing plate 15 is fixedly connected inside the protective shell 1. A bearing is fixedly connected to the surface of the fixing plate 15 so that a rotating shaft 16 passes through it. A first gear 17 is fixedly connected to the surface of the rotating shaft 16. A threaded tube 18 passes through the surface of the fixing plate 15. By setting the threaded tube 18 and the threaded post 21, the rotating shaft 16 can be rotated by the knob 19. With the cooperation of the first gear 17 and the second gear 20, the threaded post 21 can drive the fixing shaft 23 on the lower surface of the connecting plate 22 to move into the fixing hole 27, which is convenient for the operator to install and fix the limit switch body 3. A second gear 20 is fixedly connected to the surface of the threaded tube 18. The first gear 17 and the second gear 20 mesh with each other. A threaded post 21 passes through the inside of the threaded tube 18. A connecting plate 22 is fixedly connected to the bottom end of the threaded post 21. A fixing shaft 23 is fixedly connected to the lower surface of the connecting plate 22. A limit plate 26 is fixedly connected to the surface of the limit switch body 3. A fixing hole 27 is opened on the surface of the limit plate 26.

[0029] Specifically, a knob 19 is fixedly connected to the top of the rotating shaft 16, a sealing gasket 28 is fitted onto the surface of the sealing cover 2, and the mounting groove 4 and the sealing cover 5 are fixedly connected by threads. Both the sealing gasket 28 and the sealing cover 5 are made of elastic material.

[0030] Specifically, a positioning post 25 is fixedly connected to the lower surface of the limit switch body 3, and a positioning groove 24 is opened inside the protective shell 1. The positioning post 25 and the positioning groove 24 are matched. There are two sets of positioning posts 25 and positioning grooves 24, which are symmetrically arranged on the lower surface of the limit switch body 3.

[0031] By adopting the above technical solution, with the cooperation of the positioning column 25 and the positioning groove 24, the position of the limit switch body 3 can be limited and installed, so that the connecting plate 22 can drive the fixed shaft 23 to pass through the inside of the fixed hole 27.

[0032] Specifically, there are two sets of limiting grooves 6, which are symmetrically arranged on the surface of the mounting groove 4. One end of the limiting rod 7 is fixedly connected to a locking block 9. The surface of the sealing cover 5 is provided with a locking groove 10, and the locking block 9 is engaged inside the locking groove 10.

[0033] Specifically, there are two sets of limit plates 26, which are symmetrically arranged on both sides of the limit switch body 3. The fixed shaft 23 and the fixed hole 27 are matched. There are multiple sets of fixed shaft 23 and fixed hole 27, which are evenly arranged on the lower surface of the connecting plate 22.

[0034] Specifically, threaded holes 29 are provided on the surfaces of both the protective shell 1 and the sealing cover 2. Fixing bolts 30 are inserted into the threaded holes 29. There are multiple threaded holes 29 and fixing bolts 30, which are evenly arranged on the surface of the sealing cover 2.

[0035] The working principle of this utility model is as follows: When using this utility model, firstly, the device is moved to a suitable position, then the integrity of the device is checked, and then a corresponding cable tray is opened on the surface of the protective shell 1 to connect the wires, and the cable tray is sealed with sealant. When the operator uses the device to install the limit switch body 3 for waterproofing, firstly, the operator inserts the positioning post 25 on the lower surface of the limit switch body 3 into the positioning groove 24 inside the protective shell 1, and then the operator drives the rotating shaft 16 to rotate through the knob 19, and the rotating shaft 16 drives the threaded tube 18 inside the second gear 20 to rotate through the first gear 17, so that the threaded post 21 passes through the connecting plate 22. The fixed shaft 23 is moved downwards. When the fixed shaft 23 moves into the positioning hole on the surface of the limit plate 26, the limit switch body 3 is installed and fixed inside the protective shell 1. Then, the operator places the sealing cover 2 inside the protective shell 1 and inserts the fixing bolt 30 into the threaded hole 29 to fix the sealing cover 2. Then, the operator inserts the sealing cover 5 into the mounting groove 4 so that the sealing cover 5 fits onto the surface of the push rod 13. At the same time, with the cooperation of the limit rod 7 and the first spring 8, the locking block 9 fits tightly into the inside of the slide groove, preventing the sealing cover 5 from coming out of the mounting groove 4 during use. This completes the waterproof installation process of the limit switch body 3.

[0036] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A waterproof limit switch, comprising a protective housing (1), characterized in that: The protective shell (1) is equipped with a sealing cover (2) inside. The upper surface of the sealing cover (2) is fixedly connected to an installation groove (4). The installation groove (4) is equipped with a sealing cover (5) inside. The surface of the installation groove (4) is provided with a limit groove (6). The limit groove (6) is equipped with a limit rod (7) inside. The surface of the limit rod (7) is fitted with a first spring (8). The lower surface of the sealing cover (2) is fixedly connected to a telescopic rod (11). The surface of the telescopic rod (11) is fitted with a second spring (14). The bottom end of the telescopic rod (11) is fixedly connected to a push plate (12). The upper surface of the push plate (12) is fixedly connected to a push rod (13). The surface of the installation groove (4) is equipped with a sleeve (31). The push rod (13) is inserted inside the sleeve (31). The protective shell (1) is equipped with a limit switch body (3). The push plate (12) is set in the limit switch body. Above the surface of the limit switch body (3), a fixed plate (15) is fixedly connected inside the protective shell (1). A bearing is fixedly connected to the surface of the fixed plate (15) so that a rotating shaft (16) passes through it. A first gear (17) is fixedly connected to the surface of the rotating shaft (16). A threaded tube (18) is fixedly connected to the surface of the fixed plate (15). A second gear (20) is fixedly connected to the surface of the threaded tube (18). The first gear (17) and the second gear (20) mesh with each other. A threaded column (21) passes through the inside of the threaded tube (18). A connecting plate (22) is fixedly connected to the bottom end of the threaded column (21). A fixed shaft (23) is fixedly connected to the lower surface of the connecting plate (22). A limit plate (26) is fixedly connected to the surface of the limit switch body (3). A fixing hole (27) is opened on the surface of the limit plate (26).

2. The waterproof limit switch according to claim 1, characterized in that: A knob (19) is fixedly connected to the top of the rotating shaft (16), a sealing gasket (28) is fitted onto the surface of the sealing cover (2), the mounting groove (4) and the sealing cover (5) are fixedly connected by threads, and the sealing gasket (28) and the sealing cover (5) are both made of elastic material.

3. A waterproof limit switch according to claim 1, characterized in that: The lower surface of the limit switch body (3) is fixedly connected with a positioning post (25), and the inside of the protective shell (1) is provided with a positioning groove (24). The positioning post (25) and the positioning groove (24) are matched. There are two sets of positioning posts (25) and positioning grooves (24), which are symmetrically arranged on the lower surface of the limit switch body (3).

4. A waterproof limit switch according to claim 1, characterized in that: There are two sets of limiting grooves (6), which are symmetrically arranged on the surface of the mounting groove (4). One end of the limiting rod (7) is fixedly connected to a locking block (9). The surface of the sealing cover (5) is provided with a locking groove (10), and the locking block (9) is engaged inside the locking groove (10).

5. A waterproof limit switch according to claim 1, characterized in that: There are two sets of the limiting plates (26), which are symmetrically arranged on both sides of the limit switch body (3). The fixing shaft (23) and the fixing hole (27) are matched. There are multiple sets of the fixing shaft (23) and the fixing hole (27), which are evenly arranged on the lower surface of the connecting plate (22).

6. A waterproof limit switch according to claim 1, characterized in that: Both the protective shell (1) and the sealing cover (2) have threaded holes (29) on their surfaces. Fixing bolts (30) are inserted inside the threaded holes (29). There are multiple threaded holes (29) and fixing bolts (30), which are evenly arranged on the surface of the sealing cover (2).

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