Proximity switch capable of preventing hard contact

Abstract

The utility model provides a proximity switch preventing hard contact, which comprises a protection assembly and a switch assembly, the switch assembly is movably mounted in the protection assembly, and the protection assembly comprises a mounting plate, a shell, a fixing plate and a guide assembly. The switch assembly is arranged in the shell of the protection assembly, so that the switch assembly can be prevented from being directly exposed to the outside, direct impact and contact of external objects can be avoided, and meanwhile, the influence of water vapor and dust in the external environment can be reduced; according to the proximity switch, the movable plate, the protection rod and the proximity switch body are buffered, then the impact force can be relieved, the proximity switch body is greatly protected against the impact influence, and the situation that the proximity switch body is in hard contact and collision with an external workpiece is effectively avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of proximity switches, and particularly relates to a hard contact-proof proximity switch. Background Art

[0002] Existing proximity switches have significant shortcomings in terms of impact protection. First, these devices are susceptible to mechanical impact and vibration in the working environment, which can cause damage to the sensing elements of the proximity switch or degradation of their performance. Especially in industrial environments, frequent mechanical impact and vibration can accelerate equipment aging and reduce its reliability and service life. Secondly, since proximity switches usually use sensitive electronic components and precision mechanical structures, when subjected to strong impact, the internal circuits and connecting parts may loosen or break, causing poor contact or failure. These shortcomings are mainly due to the lack of tolerance to mechanical shock and vibration in the design of the proximity switch. In addition, external environments such as high temperature, humidity and corrosive gases can also damage the casing and internal components of the proximity switch, increasing its vulnerability to impact.

[0003] To address these problems, conventional methods include reinforcing the design of the proximity switch and using impact-resistant materials and structures, such as adding shock-absorbing pads or using more robust shell materials. In addition, double or multiple sealing designs can be used to improve the protection level of the equipment and reduce the impact of the external environment on internal components. However, these methods also have obvious disadvantages. First, the reinforced design and the use of high-strength materials will significantly increase the weight and volume of the equipment, limiting its application scenarios, especially in situations where space is limited or lightweight equipment is required. Increasing the weight of the equipment will also increase the difficulty and cost of installation and maintenance. In addition, although the multiple sealing design can improve the protection capability, it also increases the manufacturing complexity and cost. At the same time, these seals may age and fail after long-term use, requiring regular inspection and replacement, increasing the operating and maintenance costs. In addition, although the addition of shock-absorbing pads can buffer the impact force, it has limited effect under strong or frequent impacts and cannot completely avoid damage to internal components. Therefore, we hope to design a proximity switch with a new structure to solve this problem. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a hard contact-proof proximity switch to solve the problems raised in the above-mentioned background technology.

[0005] The utility model is realized by the following technical scheme: a hard contact proof proximity switch, comprising: a protection component, a switch component, wherein the switch component is movably installed inside the protection component, and the protection component comprises a mounting plate, a housing, a fixing plate and a guide component;

[0006] A shell is fixed on the upper side of the mounting plate, a positioning plate is integrally provided on the right end of the mounting plate, and four guide components distributed in a rectangular structure are fixed inside the shell;

[0007] The switch assembly comprises a movable plate and a proximity switch body. The middle of the movable plate is fixedly connected to the right end of the proximity switch. The proximity switch body is movably mounted on the right ends of four guide assemblies through the movable plate.

[0008] As a preferred embodiment, the mounting plate and the positioning plate are integrally arranged and have an L-shaped structure as a whole, and four fixing holes distributed in a rectangular structure are opened downward at the left end of the mounting plate.

[0009] As a preferred embodiment, a through hole 1 is formed by penetrating from the middle of the right surface of the positioning plate to the left, and a plurality of through holes 2 distributed in a ring structure are formed by penetrating from the outer portion of the edge of the through hole 1 on the right surface of the positioning plate to the left. The setting of the positioning plate facilitates the positioning of the outer shell and improves the convenience of installing the outer shell.

[0010] As a preferred embodiment, a heat dissipation window is respectively provided on the front and rear sides of the left end of the shell, the right end of the shell is sealed and clamped with the positioning plate, and the upper surface of the right side of the shell is fixedly connected to the right side of the mounting plate by four long screws.

[0011] As a preferred embodiment, the guide assembly includes a guide rod, a limit block and a spring. A limit block is arranged on the right side of the guide rod. The diameter of the limit block is larger than the diameter of the guide rod. A spring is mounted on the outer side of the right end of the guide rod. The left and right ends of the guide rod are respectively fixedly connected to the inner wall of the left end and the inner wall of the right end of the shell. The setting of the guide assembly can provide a good sliding basis for the movement of the switch assembly.

[0012] As a preferred embodiment, the four corners of the movable plate are respectively provided with guide holes, the movable plate is slidably connected with four guide rods through the four guide holes, and the four corners of the left surface of the movable plate are respectively abutted against the right end of a spring;

[0013] An elastic sleeve is respectively arranged at four corners of the right surface of the movable plate. The elastic sleeve is a rubber hollow column. The elastic sleeve is slidably connected to the right end of the guide rod.

[0014] As a preferred embodiment, a plurality of protective rods distributed in a ring structure are fixed to the right surface of the movable plate, the number, diameter and distribution position of the protective rods match the number, inner diameter and distribution position of the through holes, and the right end of each of the protective rods is equipped with an anti-collision cap.

[0015] After adopting the above technical solution, the beneficial effects of the utility model are as follows: the setting of the protection component, by placing the switch component inside the shell of the protection component, can prevent the switch component from being directly exposed to the outside world, can prevent direct impact and contact from external objects, and can also reduce the influence of water vapor and dust in the external environment, and a heat dissipation window is respectively provided on the front side and the rear side of the shell, so that the switch component inside the shell has good heat dissipation performance, avoids the accuracy of the switch component being reduced due to being in an environment with high temperature and long-term operation, and helps to increase its service life;

[0016] The setting of the switch assembly, in conjunction with the guide assembly, the protective rod and the anti-collision cap are placed on the outer edge of the right end of the proximity switch body in an annular structure, which can effectively prevent the monitored workpiece from directly colliding with the proximity switch body. If the workpiece moves excessively and impacts the protective rod and the proximity switch with a large impact force, the workpiece will directly collide with the anti-collision cap at the right end of the protective rod. After being impacted, the protective rod will transfer the impact to the movable plate, and under the impact, the connected movable plate will move to the left on the guide rod. The movement of the movable plate will squeeze the spring, and under the action of the spring restoring potential energy, the movable plate, the protective rod, and the proximity switch body are buffered, thereby being able to unload the impact force, greatly protecting the proximity switch body from the impact, and effectively avoiding hard contact collision between the proximity switch body and external workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 The utility model is a schematic diagram of the overall structure of a hard contact-proof proximity switch.

[0019] Figure 2 The utility model is a schematic diagram of the internal structure of a hard contact-proof proximity switch.

[0020] Figure 3 The utility model is a schematic diagram of a switch component structure of a hard contact-proof proximity switch.

[0021] In the figure, 100-protection component, 110-mounting plate, 120-housing, 121-heat dissipation window, 130-positioning plate, 131-through hole 1, 140-guide component, 141-guide rod, 142-limiting block, 143-spring;

[0022] 200-switch assembly, 210-movable plate, 211-elastic sleeve, 212-protection rod, 213-anti-collision cap, 220-proximity switch body. 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 of 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] See also Figures 1 to 3 The utility model provides a technical solution: a hard contact-proof proximity switch, comprising: a protection component 100, a switch component 200, wherein the switch component 200 is movably installed inside the protection component 100, and the protection component 100 comprises a mounting plate 110, a housing 120, a fixing plate and a guide component 140;

[0025] A housing 120 is fixed on the upper side of the mounting plate 110, a positioning plate 130 is integrally provided at the right end of the mounting plate 110, and four guide components 140 distributed in a rectangular structure are fixed inside the housing 120;

[0026] The switch assembly 200 includes a movable plate 210 and a proximity switch body 220 . The middle of the movable plate 210 is fixedly connected to the right end of the proximity switch. The proximity switch body 220 is movably mounted on the right ends of the four guide assemblies 140 through the movable plate 210 .

[0027] See also Figure 1 to Figure 2 The mounting plate 110 and the positioning plate 130 are integrally arranged and have an L-shaped structure as a whole. Four fixing holes distributed in a rectangular structure are opened downward at the left end of the mounting plate 110.

[0028] A through hole 131 is formed by penetrating from the middle of the right surface of the positioning plate 130 to the left, and a portion of the right surface of the positioning plate 130 located outside the edge of the through hole 131 is penetrated to the left to form a plurality of through holes 2 distributed in a ring structure. The arrangement of the positioning plate 130 facilitates the positioning of the outer shell 120 and improves the convenience of installing the outer shell 120.

[0029] A heat dissipation window 121 is respectively provided on the front and rear sides of the left end of the shell 120. The right end of the shell 120 is sealed and clamped with the positioning plate 130. The upper surface of the right side of the shell 120 is fixedly connected to the right side of the mounting plate 110 by four long screws.

[0030] As the first embodiment of the utility model, the setting of the protection component 100 can prevent the switch component 200 from being directly exposed to the outside world by placing the switch component 200 inside the shell 120 of the protection component 100, and can prevent direct impact and contact from external objects, while also reducing the influence of water vapor and dust in the external environment. A heat dissipation window 121 is respectively provided on the front and rear sides of the shell 120, which can make the switch component 200 inside the shell 120 have good heat dissipation performance, avoid it being in a high temperature and long-term working environment resulting in a decrease in accuracy, and help to improve its service life.

[0031] See also Figures 2 to 3 The guide assembly 140 includes a guide rod 141, a limit block 142 and a spring 143. The limit block 142 is arranged on the right side of the guide rod 141. The diameter of the limit block 142 is larger than the diameter of the guide rod 141. The spring 143 is sleeved on the outer side of the right end of the guide rod 141. The left and right ends of the guide rod 141 are respectively fixedly connected to the left inner wall and the right inner wall of the housing 120. The setting of the guide assembly 140 can provide a good sliding basis for the activities of the switch assembly 200.

[0032] The four corners of the movable plate 210 are respectively provided with guide holes, and the movable plate 210 is slidably connected with the four guide rods 141 through the four guide holes, and the four corners of the left surface of the movable plate 210 are respectively in contact with the right end of a spring 143;

[0033] An elastic sleeve 211 is respectively disposed at the four corners of the right surface of the movable plate 210 . The elastic sleeve 211 is a rubber hollow column. The elastic sleeve 211 is slidably connected to the right end of the guide rod 141 .

[0034] A plurality of protective rods 212 distributed in a ring structure are fixed to the right surface of the movable plate 210. The number, diameter and distribution position of the protective rods 212 match the number, inner diameter and distribution position of the through holes. The right end of each protective rod 212 is provided with an anti-collision cap 213.

[0035] As the second embodiment of the utility model, based on the above-mentioned first embodiment, in actual use, the protective rod 212 cooperates with the anti-collision cap 213 to be placed on the outer edge of the right end of the proximity switch body 220 in an annular structure, which can effectively prevent the monitored workpiece from directly colliding with the proximity switch body 220. If the workpiece moves excessively and impacts the protective rod 212 and the proximity switch with a large impact force, the workpiece will directly collide with the anti-collision cap 213 at the right end of the protective rod 212. After being impacted, the protective rod 212 will transfer the impact to the movable plate 210, and under the impact, the movable plate 210 is connected to move to the left on the guide rod 141. The movement of the movable plate 210 will squeeze the spring 143. Under the action of the spring 143 restoring the potential energy, the movable plate 210, the protective rod 212, and the proximity switch body 220 are buffered, and then the impact force can be unloaded, which greatly protects the proximity switch body 220 from being affected by the impact and effectively avoids the proximity switch body 220 from hard contact collision with external workpieces.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hard contact proof proximity switch, comprising: A protection component (100) and a switch component (200), characterized in that the switch component (200) is movably installed inside the protection component (100), and the protection component (100) comprises a mounting plate (110), a housing (120), a fixing plate, and a guide component (140); A housing (120) is fixed on the upper side of the mounting plate (110), a positioning plate (130) is integrally provided at the right end of the mounting plate (110), and four guide components (140) distributed in a rectangular structure are fixed inside the housing (120); The switch assembly (200) comprises a movable plate (210) and a proximity switch body (220); the middle of the movable plate (210) is fixedly connected to the right end of the proximity switch; the proximity switch body (220) is movably mounted on the right ends of four guide assemblies (140) via the movable plate (210).

2. A hard contact proof proximity switch according to claim 1, characterized in that: The mounting plate (110) and the positioning plate (130) are integrally arranged and have an L-shaped structure as a whole. Four fixing holes distributed in a rectangular structure are opened downward at the left end of the mounting plate (110).

3. A hard contact proof proximity switch according to claim 2, characterized in that: A through hole 1 (131) is formed through the middle of the right surface of the positioning plate (130) to the left, and a portion of the right surface of the positioning plate (130) located outside the edge of the through hole 1 (131) is formed through the left to form a plurality of through holes 2 distributed in a ring structure.

4. A hard contact proof proximity switch according to claim 3, characterized in that: A heat dissipation window (121) is respectively provided on the front side and the rear side of the left end of the housing (120); the right end of the housing (120) is sealed and clamped with the positioning plate (130); and the upper surface of the right side of the housing (120) is fixedly connected to the right side of the mounting plate (110) via four long screws.

5. The hard contact proof proximity switch according to claim 1, characterized in that: The guide assembly (140) comprises a guide rod (141), a limit block (142) and a spring (143); a limit block (142) is arranged on the right side of the guide rod (141); the diameter of the limit block (142) is larger than the diameter of the guide rod (141); a spring (143) is sleeved on the outer side of the right end of the guide rod (141); and the left end and the right end of the guide rod (141) are fixedly connected to the left end inner wall and the right end inner wall of the housing (120) respectively.

6. A hard contact proof proximity switch according to claim 5, characterized in that: The four corners of the movable plate (210) are respectively provided with guide holes, the movable plate (210) is slidably connected to four guide rods (141) via the four guide holes, and the four corners of the left surface of the movable plate (210) are respectively in contact with the right end of a spring (143); An elastic sleeve (211) is respectively provided at the four corners of the right surface of the movable plate (210); the elastic sleeve (211) is a rubber hollow column; the elastic sleeve (211) is slidably connected to the right end of the guide rod (141).

7. The hard contact proof proximity switch according to claim 6, characterized in that: A plurality of protective rods (212) distributed in an annular structure are fixed to the right surface of the movable plate (210); the number, diameter and distribution position of the protective rods (212) match the number, inner diameter and distribution position of the through holes; and the right end of each protective rod (212) is fitted with an anti-collision cap (213).

Images