Limit switch structure

Abstract

The utility model provides a limit switch structure, and belongs to the technical field of limit mechanisms. The limit switch structure comprises a U-shaped plate, a motor, a lead screw, a guide rod, a moving block, an L-shaped plate, a limit switch, a threaded rod, a nut and a protection mechanism, the U-shaped plate, the motor and the guide rod are all fixed to the U-shaped plate, one end of the lead screw is rotationally arranged on the U-shaped plate, when the limit switch structure is used, the limit switch works to control the motor to stop working, and the moving block is fixed to the L-shaped plate. The baffle and the spring protect the limit switch, the limit switch is effectively prevented from being damaged by collision, the limit switch structure is convenient to quickly adjust the position of the limit switch according to the point and the scale of different physical objects of the control system advancing to the actuating switch, a new threaded hole does not need to be formed, time and labor are saved, and the working efficiency is improved. And a baffle and a spring are used for protecting the limiting switch, so that the service life of the limiting switch is prolonged, and better use experience is brought to a user.

Description

Technical Field

[0001] This application relates to the technical field of limit mechanisms, and more particularly, to a limit switch structure. Background Art

[0002] A limit switch is a switch actuated by the movement of a physical object, such as a machine or a part of a machine. The limit switch can be used as part of a control system to positively determine when a physical object has traveled to the point where the switch is actuated. Currently, the left and right movement of a moving block is often used to touch the limit switch to achieve the limit function. However, depending on the control system, the point at which the physical object travels to the actuating switch is different, which requires adjusting the position of the limit switch. Currently, adjusting the limit switch requires re-drilling threaded holes to reinstall the limit switch, which is time-consuming and laborious, bringing a bad user experience. Utility Model Content

[0003] To make up for the above deficiencies, this application provides a limit switch structure, aiming to improve the problem that currently, the left and right movement of a moving block is often used to touch the limit switch to achieve the limit function. However, depending on the control system, the point at which the physical object travels to the actuating switch is different, which requires adjusting the position of the limit switch. Currently, adjusting the limit switch requires re-drilling threaded holes to reinstall the limit switch, which is time-consuming and laborious.

[0004] This application is implemented as follows:

[0005] This application provides a limit switch structure, including a U-shaped plate, a motor, a lead screw, a guide rod, a moving block, an L-shaped plate, a limit switch, a threaded rod, a nut, and a protection mechanism. The U-shaped plate, the motor, and the guide rod are all fixed on the U-shaped plate. One end of the lead screw is rotatably arranged on the U-shaped plate, and the other end of the lead screw is fixed to the output shaft of the motor.

[0006] The moving block is threadedly sleeved on the lead screw and also slidably sleeved on the guide rod. Different limit switches are respectively installed on the U-shaped plate and the L-shaped plate. The limit switch and the moving block are arranged corresponding to each other. The upper end of the threaded rod is fixed to the lower surface of the limit switch. Different threaded rods respectively penetrate through the L-shaped plate and the U-shaped plate, and the nut is threadedly sleeved on the threaded rod.

[0007] The protection mechanism is installed on the limit switch, and the setting of the protection mechanism is used to protect the limit switch from collision.

[0008] In one embodiment of this application, a locking member is further included, and the locking member threadedly penetrates through the L-shaped plate and the U-shaped plate at the same time.

[0009] In an embodiment of the present application, through holes are provided on both the L-shaped plate and the U-shaped plate, and the threaded rod passes through the through holes.

[0010] In an embodiment of the present application, it further includes scales, and different scales are respectively arranged on the L-shaped plate and the U-shaped plate.

[0011] In an embodiment of the present application, the protection mechanism includes a baffle and a spring. The baffle is sleeved on the limit switch, and the spring is fixed between the baffle and the limit switch.

[0012] In an embodiment of the present application, a plurality of springs are provided, and the plurality of springs are linearly and equidistantly arranged on the baffle.

[0013] The beneficial effect of the present application is as follows: A limit switch structure obtained through the above design in the present application, when in use, according to the point where different physical objects in the control system travel to the actuating switch, move the limit switch, adjust the position of the limit switch according to the scale. After adjustment, hold the limit switch and rotate the nut. The upper surface of the nut squeezes the surface of the L-shaped plate or the U-shaped plate to fix the limit switch. The motor works, and the rotation of the output shaft of the motor drives the screw rod to rotate. The moving block realizes lateral movement under the combined action of the screw rod and the guide rod. When the moving block touches the baffle, the baffle squeezes the spring, and the reaction force of the spring acts on the limit switch, and the limit switch works to control the motor to stop working to achieve the limiting effect. The baffle and the spring protect the limit switch, effectively preventing the limit switch from being damaged. This limit switch structure is convenient for quickly adjusting the position of the limit switch according to the points where different physical objects in the control system travel to the actuating switch and the scale, without the need to newly open threaded holes, saving time and effort, and protecting the limit switch by using the baffle and the spring, improving the service life of the limit switch and bringing a better use experience to users. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 is a three-dimensional structural schematic diagram of a limit switch structure provided by an embodiment of the present application;

[0016] Figure 2 is a three-dimensional structural schematic diagram of the L-shaped plate and the limit switch provided by an embodiment of the present application;

[0017] Figure 3 Relationship diagram between the limit switch and the protection mechanism provided by the embodiment of the present application;

[0018] Figure 4 Relationship diagram between the U-shaped plate, L-shaped plate and moving block provided by the embodiment of the present application.

[0019] In the figure: 110 - U-shaped plate; 120 - motor; 130 - lead screw; 140 - guide rod; 150 - moving block; 160 - L-shaped plate; 170 - locking member; 180 - through hole; 190 - scale; 191 - limit switch; 192 - protection mechanism; 1921 - baffle; 1922 - spring; 193 - threaded rod; 194 - nut. Specific embodiments

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0021] Embodiment

[0022] Please refer to Figure 1 - Figure 4 , the present application provides a technical solution: a limit switch structure, including a U-shaped plate 110, a motor 120, a lead screw 130, a guide rod 140, a moving block 150, an L-shaped plate 160, a limit switch 191, a threaded rod 193, a nut 194 and a protection mechanism 192. The U-shaped plate 110, the motor 120 and the guide rod 140 are all fixed on the U-shaped plate 110. A locking member 170 is also included. The locking member 170 simultaneously threadedly penetrates through the L-shaped plate 160 and the U-shaped plate 110. The locking member 170 in this embodiment is a bolt. One end of the lead screw 130 is rotatably arranged on the U-shaped plate 110, and the other end of the lead screw 130 is fixed to the output shaft of the motor 120;

[0023] The moving block 150 is threadedly sleeved on the lead screw 130, and the moving block 150 is also slidably sleeved on the guide rod 140. Different limit switches 191 are respectively installed on the U-shaped plate 110 and the L-shaped plate 160. The limit switches 191 and the moving block 150 are correspondingly arranged. The upper end of the threaded rod 193 is fixed on the lower surface of the limit switch 191. Different threaded rods 193 respectively penetrate through the L-shaped plate 160 and the U-shaped plate 110. The nut 194 is threadedly sleeved on the threaded rod 193. Through holes 180 are formed on both the L-shaped plate 160 and the U-shaped plate 110. The threaded rod 193 penetrates through the through holes 180. The arrangement of the through holes 180 facilitates the movement of the threaded rod 193 on the L-shaped plate 160 or the U-shaped plate 110, that is, facilitates the adjustment of the position of the limit switch 191. It also includes scales 190. Different scales 190 are respectively arranged on the L-shaped plate 160 and the U-shaped plate 110. The arrangement of the scales 190 facilitates the precise adjustment of the limit switch 191;

[0024] The protection mechanism 192 is installed on the limit switch 191. The protection mechanism 192 is provided for anti-collision protection of the limit switch 191. The protection mechanism 192 includes a baffle 1921 and a spring 1922. The baffle 1921 is sleeved on the limit switch 191. The spring 1922 is fixed between the baffle 1921 and the limit switch 191. The spring 1922 facilitates the protection of the limit switch 191. A plurality of springs 1922 are provided. The plurality of springs 1922 are linearly and equidistantly arranged on the baffle 1921. The plurality of springs 1922 better protect the limit switch 191.

[0025] Specifically, the working principle of this limit switch structure is as follows: When in use, according to different physical objects of the control system moving to the point of the actuating switch, move the limit switch 191, adjust the position of the limit switch 191 according to the scale 190. After adjustment, hold the limit switch 191 and rotate the nut 194. The upper surface of the nut 194 fixes the limit switch 191 by squeezing the surface of the L-shaped plate 160 or the U-shaped plate 110. The motor 120 works, and the rotation of the output shaft of the motor 120 drives the lead screw 130 to rotate. The moving block 150 realizes lateral movement under the combined action of the lead screw 130 and the guide rod 140. When the moving block 150 touches the baffle 1921, the baffle 1921 squeezes the spring 1922, and the reaction force of the spring 1922 acts on the limit switch 191. The limit switch 191 works to control the motor 120 to stop working, so as to achieve the limiting effect. The baffle 1921 and the spring 1922 protect the limit switch 191, effectively preventing the limit switch 191 from being damaged. This limit switch structure is convenient for quickly adjusting the position of the limit switch 191 according to different physical objects of the control system moving to the point of the actuating switch and the scale 190, without the need to newly drill threaded holes, saving time and effort. Moreover, the baffle 1921 and the spring 1922 are used to protect the limit switch 191, improving the service life of the limit switch 191 and bringing a better use experience to users.

[0026] It should be noted that the specific model specifications of the motor 120 and the limit switch 191 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated in detail.

[0027] The power supply and its principle of the motor 120 and the limit switch 191 are clear to those skilled in the art and will not be described in detail here.

[0028] The above are only the embodiments of the present application and are not used to limit the protection scope of the present application. For those skilled in the art, various changes and modifications can be made to the present application. 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. It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

Claims

1. A limit switch structure, characterized in that: The invention comprises a U-shaped plate (110), a motor (120), a screw rod (130), a guide rod (140), a moving block (150), an L-shaped plate (160), a limit switch (191), a threaded rod (193), a nut (194) and a protection mechanism (192); the U-shaped plate (110), the motor (120) and the guide rod (140) are all fixed on the U-shaped plate (110); one end of the screw rod (130) is rotatably arranged on the U-shaped plate (110); and the other end of the screw rod (130) is fixed together with an output shaft of the motor (120); The moving block (150) is threadedly sleeved on the screw rod (130), and the moving block (150) is also slidably sleeved on the guide rod (140). Different limit switches (191) are respectively installed on the U-shaped plate (110) and the L-shaped plate (160). The limit switch (191) and the moving block (150) are arranged correspondingly. The upper end of the threaded rod (193) is fixed on the lower surface of the limit switch (191). Different threaded rods (193) pass through the L-shaped plate (160) and the U-shaped plate (110) respectively. The nut (194) is threadedly sleeved on the threaded rod (193); The protection mechanism (192) is installed on the limit switch (191), and the protection mechanism (192) is used to provide anti-collision protection for the limit switch (191).

2. A limit switch structure according to claim 1, characterized in that: It also includes a locking piece (170), wherein the locking piece (170) is threadedly penetrated through the L-shaped plate (160) and the U-shaped plate (110).

3. A limit switch structure according to claim 1, characterized in that: The L-shaped plate (160) and the U-shaped plate (110) are both provided with through holes (180), and the threaded rod (193) passes through the through holes (180).

4. A limit switch structure according to claim 3, characterized in that: It also includes scales (190), and different scales (190) are respectively arranged on the L-shaped plate (160) and the U-shaped plate (110).

5. A limit switch structure according to claim 1, characterized in that: The protection mechanism (192) comprises a baffle (1921) and a spring (1922); the baffle (1921) is sleeved on the limit switch (191); and the spring (1922) is fixed between the baffle (1921) and the limit switch (191).

6. A limit switch structure according to claim 5, characterized in that: The spring (1922) is provided in plurality, and the plurality of springs (1922) are linearly and equidistantly arranged on the baffle (1921).

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