Limit switch

Abstract

The utility model discloses a limit switch, and belongs to the field of limit switches, and the limit switch mainly comprises a switch assembly, the switch assembly comprises a sealing box, the bottom of the sealing box is fixedly provided with a fixing assembly, the top of a fixing block and the bottom of the sealing box are fixedly installed, and the bottom of the fixing block is provided with a first fixing plate. According to the limiting switch, the first fixing plate and the second fixing plate are matched with each other, the bottom of the second fixing plate can make contact with the external equipment needing to be installed, and the first fixing plate and the second fixing plate enable the bottom of the switch assembly to have a certain height with the external equipment; and a second fixing plate can be adjusted at a third moving groove through a third bolt, and meanwhile, a second bolt can be adjusted at a second moving groove, so that the switch assembly can be suitable for different terrain conditions during installation, and the installation efficiency is improved. Therefore, the mounting adaptability of the switch assembly is improved.

Description

Technical Field

[0001] The present application relates to the technical field of limit switches, and in particular to limit switches. Background Art

[0002] A limit switch usually refers to a switch used to control and detect the movement position of a mechanical or electronic device. In mechanical equipment or automation systems, limit switches are usually used to detect signals when an object reaches or exceeds a specific position, thereby triggering corresponding operations or stopping actions. At the same time, limit switches are usually installed near the moving parts that need to monitor the position in order to detect whether the object or part has reached a specific position. Usually, limit switches can be installed on a variety of equipment such as valves, electric actuators, door control systems or lifting equipment;

[0003] However, the limit switches we currently use may be composed of multiple parts when they are installed in combination on the equipment. This will make it inconvenient to install the limit switches on the equipment. Often, the limit switches may need to be installed and used with the help of external parts and auxiliary equipment.

[0004] Therefore, it is necessary to provide a limit switch to solve the above problems.

[0005] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Utility Model Content

[0006] Based on the above problems existing in the prior art, the problem to be solved by the present application is: to provide a limit switch so as to achieve the effect of being able to install a variety of equipment and models of different specifications.

[0007] The technical solution adopted by the present application to solve its technical problems is: a limit switch, including a switch assembly, the switch assembly including a sealing box, a fixing assembly fixedly installed on the bottom of the sealing box, the fixing assembly including a fixing block, the top of the fixing block is fixedly installed on the bottom of the sealing box, a first fixing plate is arranged at the bottom of the fixing block, the first fixing plate is an L-shaped structure, a first bolt is arranged at the bottom of the first fixing plate, the first bolt is threadedly connected to the fixing block, and a second fixing plate is arranged at one end of the bottom of the first fixing plate.

[0008] Furthermore, the first fixing plate has two first movable grooves near the first bolt, the first bolt passes through the first bolt and is connected to the fixing block, the bottom of the first fixing plate has two third movable grooves, the inside of the second fixing plate is provided with a third bolt, the third bolt passes through the second fixing plate and the third movable groove, and one end of the third bolt is provided with a threaded cap.

[0009] Furthermore, a second movable groove is formed on the second fixing plate, and a second bolt is disposed inside the second movable groove.

[0010] Furthermore, a bearing block is fixedly clamped on the sealing box, and a rotating shaft is installed on the internal bearing of the bearing block.

[0011] Furthermore, a sealing cover is provided on the bearing block, and a plurality of groups of bayonet pins are clamped on the sealing cover, and the plurality of groups of bayonet pins pass through the sealing cover and are connected to the bearing block.

[0012] Furthermore, a limiter is arranged on the outer side of the rotating shaft, a cam is fixedly installed on the outer side of the rotating shaft near the limiter, and the cam is irregular in shape. Two groups of relatively arranged micro switches are arranged inside the sealing box near the cam.

[0013] Furthermore, a wire collection port is provided on the sealing box, and wiring terminals are fixedly installed inside the sealing box, and the wiring terminals are aligned with the wire collection port.

[0014] The beneficial effects of the present application are: the limit switch provided by the present application, through the mutual cooperation between the first fixing plate and the second fixing plate, wherein the bottom of the second fixing plate can contact the external device that needs to be installed, and the first fixing plate and the second fixing plate make the bottom of the switch assembly have a certain height with the external device, so that the switch assembly can be installed on the external device, and the second fixing plate can be adjusted at the third movable groove by the third bolt, and the second bolt can also be adjusted at the second movable groove, so that the switch assembly can be adapted to different terrain conditions during installation, thereby improving the adaptability of the installation of the switch assembly.

[0015] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0017] In the attached picture:

[0018] Figure 1 It is an overall schematic diagram of the limit switch in this application;

[0019] Figure 2 1 is a schematic diagram of the switch assembly;

[0020] Figure 3 Schematic diagram of the micro switch of switch assembly 2;

[0021] Figure 4 This is a schematic diagram of the fixed components in 1;

[0022] Among them, the reference numerals in the figure are:

[0023] 1. Switch assembly; 11. Sealing cover; 12. Bayonet; 13. Bearing block; 14. Sealing box; 15. Rotating shaft; 16. Cam; 17. Micro switch; 18. Wiring terminal; 19. Cable collection port; 110. Limiter;

[0024] 2. Fixing assembly; 21. First fixing plate; 22. Fixing block; 23. First bolt; 24. First movable groove; 25. Second fixing plate; 26. Second movable groove; 27. Second bolt; 28. Third bolt; 29. ​​Third movable groove. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0027] like Figure 1 As shown, the present application provides a limit switch, including a switch assembly 1, and a fixing assembly 2 fixedly mounted on the bottom of the switch assembly 1, wherein the switch assembly 1 is used to be installed between external devices that need to be combined, such as a valve, so as to monitor the switch state or a specific position of the valve, such as open, closed or intermediate position, and the fixing assembly 2 is used to cooperate with the external device for installation, so that the switch assembly 1 can be smoothly fixed on the valve;

[0028] Before the switch assembly 1 works, it needs to be installed. When the switch assembly 1 is installed, it needs to be fixed between the fixing assembly 2 and the external device. To this end:

[0029] like Figure 4As shown, the fixing assembly 2 includes a fixing block 22, the top of which is fixedly mounted to the bottom of the sealing box 14. It can be understood that the fixing block 22 and the sealing box 14 are an integral structure, and the fixing block 22 is provided with a thread inside. The bottom of the fixing block 22 is provided with a first fixing plate 21, which is an L-shaped structure, so that the first fixing plate 21 has a certain height space at the bottom through the L mechanism, so that the switch assembly 1 can pass over some protruding parts through the first fixing plate 21, thereby avoiding obstruction;

[0030] At the same time, two first moving grooves 24 are formed on the first fixing plate 21 near the fixing block 22. The first moving groove 24 has a certain length. A first bolt 23 is arranged inside the first moving groove 24. The first bolt 23 passes through the first bolt 23 and is connected to the fixing block 22. At the same time, the first bolt 23 is threadedly connected to the fixing block 22, so that the first bolt 23 passes through the first moving groove 24 and is connected to the fixing block 22, so that the bottom of the sealing box 14 can be initially fixed to the first fixing plate 21, and a second fixing plate 25 is arranged at one end of the bottom of the first fixing plate 21. The second fixing plate 25 is also an L-shaped structure, and the second fixing plate 25 A third bolt 28 is provided near the first fixing plate 21, and a nut is provided at one end of the third bolt 28. A third movable groove 29 is provided near the third bolt 28 on the first fixing plate 21. The third movable groove 29 also has a certain length, so that the second fixing plate 25 can pass through the third movable groove 29 through the third bolt 28, and then the nut is connected to the third bolt 28, so that the first fixing plate 21 and the second fixing plate 25 can be installed, and the third movable groove 29 has a certain length, so that the second fixing plate 25 can be adjusted at one end of the first fixing plate 21, so that the fixing assembly 2 can be suitable for different height positions;

[0031] A second bolt 27 is installed on the second fixing plate 25, and a second movable groove 26 is opened on the second fixing plate 25 near the second bolt 27. The second movable groove 26 has a certain length, and the bottom of the second fixing plate 25 will contact the external device, so that the second bolt 27 can pass through the second movable groove 26 to connect with the external device, so that the fixing component 2 and the switch component 1 can be smoothly fixed and installed on the external device. At the same time, through the second movable groove 26, the second bolt 27 can be in different positions, so that the second bolt 27 can be installed between external devices of different models, thereby greatly improving the adaptability of the limit switch installation;

[0032] The sealing box 14 is fixedly clamped with a bearing block 13, and the internal bearing of the bearing block 13 is equipped with a rotating shaft 15, and an arc is provided between the first fixing plates 21, and the arc is adapted to the rotating shaft 15, so that when the two sets of first fixing plates 21 are close to each other, the arc can avoid contact with the rotating shaft 15, so that the rotating shaft 15 can work normally;

[0033] like Figure 1 and Figure 2 As shown, a sealing cover 11 is provided on the bearing block 13, and a plurality of groups of bayonet pins 12 are clamped on the sealing cover 11. The plurality of groups of bayonet pins 12 pass through the sealing cover 11 and are connected to the bearing block 13, so that the sealing cover 11 can be used to install the bearing block 13 through the plurality of sealing covers 11, and the switch assembly 1 includes a sealing box 14, which can be assembled and installed between the sealing cover 11 and the bearing block 13, so as to seal and protect the parts inside the limit switch;

[0034] A limiter 110 is arranged on the outside of the rotating shaft 15, and a cam 16 is fixedly installed on the outside of the rotating shaft 15 near the limiter 110. The cam 16 is irregular in shape, and the inside of the limiter 110 is ninety degrees, so that the rotating shaft 15 can be limited by the ninety degrees of the limiter 110. Two groups of relatively arranged micro switches 17 are arranged inside the sealing box 14 near the cam 16, and the two groups of micro switches 17 can transmit opening signals and closing signals respectively. The micro switches 17 are used to contact with the cam 16. When the rotating shaft 15 rotates, the irregular cam 16 will be driven to rotate successively. At this time, the protruding part of the cam 16 will contact with one group of micro switches 17. At this time, the cam 16 triggers the micro switch 17 to switch the direction, so that the valve can realize the opening or closing operation.

[0035] The sealed box 14 is provided with a wire collection port 19 , and a wiring terminal 18 is fixedly installed inside the sealed box 14 . The wiring terminal 18 is aligned with the wire collection port 19 . The wiring terminal 18 is provided with eight groups of terminal parts, so that the external power line can pass through the wire collection port 19 and connect to the wiring terminal 18 .

[0036] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A limit switch, comprising a switch assembly (1), wherein the switch assembly (1) comprises a sealing box (14), characterized in that: A fixing assembly (2) is fixedly installed at the bottom of the sealing box (14), and the fixing assembly (2) comprises a fixing block (22). The top of the fixing block (22) is fixedly installed with the bottom of the sealing box (14). A first fixing plate (21) is arranged at the bottom of the fixing block (22). The first fixing plate (21) is an L-shaped structure. A first bolt (23) is arranged at the bottom of the first fixing plate (21). The first bolt (23) is threadedly connected to the fixing block (22). A second fixing plate (25) is arranged at one end of the bottom of the first fixing plate (21).

2. The limit switch according to claim 1, characterized in that: The first fixing plate (21) is provided with two first movable grooves (24) near the first bolt (23), the first bolt (23) passes through the first bolt (23) and is connected to the fixing block (22), the bottom of the first fixing plate (21) is provided with two third movable grooves (29), the interior of the second fixing plate (25) is provided with a third bolt (28), the third bolt (28) passes through the second fixing plate (25) and the third movable groove (29), and one end of the third bolt (28) is provided with a threaded cap.

3. The limit switch according to claim 1, characterized in that: The second fixing plate (25) is provided with a second movable groove (26), and a second bolt (27) is arranged inside the second movable groove (26).

4. The limit switch according to claim 1, characterized in that: A bearing block (13) is fixedly clamped on the sealing box (14), and a rotating shaft (15) is installed on the internal bearing of the bearing block (13).

5. The limit switch according to claim 4, characterized in that: The bearing block (13) is provided with a sealing cover (11), and a plurality of groups of bayonet pins (12) are clamped on the sealing cover (11). The plurality of groups of bayonet pins (12) pass through the sealing cover (11) and are connected to the bearing block (13).

6. The limit switch according to claim 4, characterized in that: A limiter (110) is arranged on the outer side of the rotating shaft (15), a cam (16) is fixedly installed on the outer side of the rotating shaft (15) close to the limiter (110), and the cam (16) is irregular in shape. Two groups of micro switches (17) arranged opposite to each other are arranged inside the sealing box (14) close to the cam (16).

7. The limit switch according to claim 6, characterized in that: The sealing box (14) is provided with a wire collection port (19), and a wiring terminal (18) is fixedly installed inside the sealing box (14), and the wiring terminal (18) and the wire collection port (19) are aligned with each other.

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