Inductance type proximity switch

Abstract

The utility model discloses an inductance type proximity switch, which relates to the technical field of inductance type proximity switches and comprises a first protective shell, a proximity switch body is in threaded connection with one end in the first protective shell, a protective sleeve is fixedly connected with the upper end of the proximity switch body, and a second protective shell is mounted at one end of the first protective shell. Fixing blocks are symmetrically and fixedly connected in the second protective shell, connecting mechanisms are installed in the fixing blocks, fixing mechanisms are symmetrically installed in the upper ends of the first protective shell and the second protective shell, and a first protective column is installed at the end, close to the second protective shell, of the first protective shell; a second protection column is installed at the end, close to the first protection shell, of the second protection shell. By adopting the structure, the inductance type switch can be effectively protected from being influenced by the external environment, so that the service life of the inductance type switch is prolonged, and the inductance type switch can be prevented from being accidentally touched or damaged by an external object.

Description

Technical Field

[0001] The utility model belongs to the technical field of inductive proximity switches, and particularly relates to an inductive proximity switch. Background Art

[0002] An inductive proximity switch is a sensor that uses the principle of inductive electromagnetic fields. It detects the approach or distance of an object by sensing the change in the electromagnetic field of a metal object. When a metal object approaches the inductive proximity switch, the metal object changes its inductive electromagnetic field, triggering the switch action. This type of switch is often used in industrial automation to detect the position of metal parts, count, or approach and distance of objects. They can work in harsh environmental conditions and have high sensitivity and stability.

[0003] Publication No. "CN213637707U" An inductive proximity switch includes a placement table, a proximity switch body arranged on the placement table, a clamping module arranged on the placement table and cooperating with the proximity switch body, a mounting module slidably connected to the placement table, and an adjustment module and a buffer module arranged on the mounting module and connected to the placement table; the proximity switch body includes an oscillator, a signal trigger connected to the oscillator, a switch circuit connected to the signal trigger, and an amplifying output circuit connected to the switch circuit; the adjustment module includes an adjustment cylinder and a pad connected to the adjustment cylinder; the pad is installed on the placement table. The utility model solves the problems of the traditional inductive proximity switch having a simple structure, difficulty in adjusting the sensing distance to adapt to different objects to be measured, and low sensing accuracy.

[0004] Although the above-mentioned utility model solves the problems of the traditional inductive proximity switch, such as simple structure, difficulty in adjusting the sensing distance to adapt to different objects to be measured, and low sensing accuracy, the inductive proximity switch is easily affected by external environment such as dust, water vapor, and chemical substances during use, which may cause switch failure or damage. At the same time, although there is a buffer module, it cannot effectively resist the impact or collision of external objects, which can easily cause the inductive proximity switch to be damaged, and it may cause safety hazards due to the entry of external objects. For example, in some industrial environments, it may be interfered by foreign objects, thereby affecting the normal operation of the switch, which is very inconvenient. Utility Model Content

[0005] In view of the problems mentioned in the background technology, the purpose of the utility model is to provide an inductive proximity switch to solve the problem that the inductive proximity switch is easily affected by the external environment such as dust, water vapor, chemical substances, and cannot effectively resist the impact or collision of external objects, resulting in failure or damage of the inductive proximity switch.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] An inductive proximity switch comprises a first protective shell, wherein one end of the first protective shell is threadedly connected to a proximity switch body, an end of the proximity switch body away from the first protective shell is provided with a sensing end, a protective sleeve is fixedly connected to the upper end of the proximity switch body, a second protective shell is installed at one end of the first protective shell, a fixing block is symmetrically fixedly connected to the inside of the second protective shell, the fixing block protrudes from one end of the second protective shell close to the first protective shell, a connecting mechanism is installed inside the fixing block, fixing mechanisms are symmetrically installed inside the upper ends of the first protective shell and the second protective shell, a first protective column is installed at one end of the first protective shell close to the second protective shell, and a second protective column is installed at one end of the second protective shell close to the first protective shell;

[0008] The connecting mechanism includes a cavity, a first return spring, a movable plate, a positioning block, a slider and a first push block, a cavity is provided inside the fixed block, one end of the cavity is symmetrically fixedly connected with the first return spring, the other end of the first return spring is fixedly connected with the movable plate, one end of the movable plate away from the first return spring is fixedly connected with the positioning block, the positioning block penetrates the fixed block and protrudes from the upper end of the fixed block, one end of the movable plate is fixedly connected with the slider, the slider penetrates the fixed block and protrudes from one end of the fixed block, and the end of the slider away from the movable plate is fixedly connected with the first push block, both ends of the second protective shell are symmetrically provided with sliding grooves, the sliding grooves are connected with the cavity, the slider and the sliding grooves are slidably connected, and the fixed grooves are symmetrically provided at one end of the first protective shell close to the second protective shell. The fixing groove and the fixing block are plug-in, a positioning groove is opened at one end inside the fixing groove, the positioning groove and the positioning block are plug-in, limiting holes are symmetrically opened at the chamfer of one end of the first protective shell close to the second protective shell, the chamfer of one end of the second protective shell close to the first protective shell is symmetrically fixedly connected with limiting columns, the limiting columns and the limiting holes are plug-in, slots are symmetrically opened at one end of the first protective column close to the second protective column, and plug-in blocks are symmetrically fixedly connected at one end of the second protective column close to the first protective column, and the plug-in block is plug-in to the slot, which can effectively protect the inductive switch from the influence of the external environment, thereby extending its service life, and can prevent external objects from accidentally touching or damaging the inductive switch, thereby improving the safety of the equipment.

[0009] As a preferred technical solution, the fixing mechanism includes a accommodating chamber, a second return spring, a connecting block, a moving column, an arc-shaped clamping plate, a moving block and a second pushing block. The first protective shell and the second protective shell upper ends are symmetrically provided with accommodating chambers, one end of the accommodating chamber is symmetrically fixedly connected with the second return spring, the other end of the second return spring is fixedly connected with the connecting block, and the end of the connecting block away from the second return spring is fixedly connected with the moving column, the moving column respectively penetrates the first protective shell and the second protective shell and protrudes into the first protective column and the second protective column, the end of the moving column away from the connecting block is fixedly connected with the arc-shaped clamping plate, the upper end of the connecting block is fixedly connected with the moving block, the moving blocks extend out of the upper ends of the first protective shell and the second protective shell respectively, and the end of the moving block away from the connecting block is fixedly connected with the second pushing block, the upper ends of the first protective shell and the second protective shell are symmetrically provided with moving grooves, the moving grooves are connected with the accommodating chamber, and the moving grooves are slidably connected with the moving columns, which can ensure that the connection between the connecting line and the inductive proximity switch is stable and reliable, prevent the connection from loosening or falling off due to external force pulling or vibration, and reduce the friction and vibration between the connecting line and the inductive proximity switch, thereby extending the service life of the connecting components.

[0010] As a preferred technical solution, a through groove is provided at the end of the second protective shell away from the first protective shell, a movable groove is provided inside the through groove, a baffle is symmetrically slidably connected inside the movable groove, T-shaped grooves are symmetrically provided at the upper and bottom ends of the movable groove, T-shaped blocks are symmetrically fixedly connected to the upper and bottom ends of the baffle, and the T-shaped block and the T-shaped groove are slidably connected, and a push groove is symmetrically provided at the end of the second protective shell away from the first protective shell, the push groove is connected to the movable groove, a third push block is fixedly connected to the end of the baffle close to the push groove, and the third push block is slidably connected to the push groove, so as to achieve precise control of the sensitivity of the inductive switch to meet specific detection requirements, and at the same time, the sensitivity of the sensing end to the external magnetic field can be flexibly controlled, so that the inductive switch can adapt to different working environments and application requirements.

[0011] In summary, the utility model mainly has the following beneficial effects:

[0012] First, the utility model uses a connecting mechanism. When the first protective shell and the second protective shell need to be installed, the user pushes the first push block downward, the slider slides in the slide groove, the moving plate drives the positioning block to retract into the cavity, and then the first protective shell and the second protective shell are merged, the limiting column is inserted into the limiting hole, the fixing block is inserted into the fixing groove, and then the push block is released, the first reset spring is reset, the moving plate drives the positioning block to pop out and plug and fix it with the positioning groove, and the installation between the first protective shell and the second protective shell is completed. It can effectively protect the inductive switch from being affected by the external environment, such as dust, water vapor, chemicals, etc., thereby extending its service life, and preventing external objects from accidentally touching or damaging the inductive switch, thereby improving the safety of the equipment;

[0013] Second, the utility model uses a fixing mechanism. When the inductive proximity switch connecting line needs to be fixed, the user pushes the second push block to both sides, the moving block slides inside the moving groove, the connecting block drives the moving column to retract into the accommodating cavity, and then the connecting line is connected to the inductive proximity switch. At the same time, the second push block is released, the second reset spring is reset, the connecting block drives the moving column to return to its position, and the arc-shaped clamping plate clamps the connecting line to complete the fixing of the inductive proximity switch connecting line, which can ensure that the connection between the connecting line and the inductive proximity switch is stable and reliable, prevent the connection from being loosened or falling off due to external pulling or vibration, and reduce the friction and vibration between the connecting line and the inductive proximity switch, thereby extending the service life of the connecting component;

[0014] Third, the utility model uses the baffle, when it is necessary to adjust the opening degree of the through slot, the user pushes the third push block, the push block slides in the push slot, the baffle slides in the movable slot, and the T-shaped block slides inside the T-shaped slot, so that the baffle is merged or opened on both sides, and the opening degree of the through slot is adjusted. The sensitivity of the inductive switch can be precisely controlled to meet specific detection requirements, and the inductive protective shell can be adapted to different installation positions and working scenes, thereby improving the adaptability and versatility of the equipment, and at the same time, the sensitivity of the induction end to the external magnetic field can be flexibly controlled, so that the inductive switch can adapt to different working environments and application requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the second protective shell of the utility model;

[0017] Figure 3 It is a schematic diagram of a cross-sectional three-dimensional structure of the connection mechanism of the utility model;

[0018] Figure 4 It is a schematic diagram of the cross-sectional three-dimensional structure of the fixing groove of the utility model;

[0019] Figure 5 It is a cross-sectional three-dimensional structural schematic diagram of the fixing mechanism of the utility model;

[0020] Figure 6 This is a schematic diagram of the three-dimensional structure of the first protective shell of the utility model;

[0021] Figure 7 It is a schematic diagram of a sectional three-dimensional structure of a baffle of the utility model.

[0022] 1. The first protective shell, 2. The second protective shell, 3. The proximity switch body, 4. The limiting column, 5. The limiting hole, 6. The fixing block, 7. The connecting mechanism, 71. The cavity, 72. The first return spring, 73. The movable plate, 74. The positioning block, 75. The slider, 76. The first push block, 8. The slide groove, 9. The fixing groove, 10. The positioning groove, 11. The fixing mechanism, 111. The accommodating cavity, 112. The second return spring, 113. The connecting block, 114. The movable column, 115. The arc-shaped clamping plate, 116. The movable block, 117. The second push block, 12. The movable groove, 13. The first protective column, 14. The second protective column, 15. The plug-in block, 16. The slot, 17. The sensing end, 18. The through groove, 19. The movable groove, 20. The baffle, 21. The T-shaped groove, 22. The T-shaped block, 23. The pushing groove, 24. The pushing block, 25. The third push block. DETAILED DESCRIPTION

[0023] Example 1

[0024] refer to Figures 1 to 7 , an inductive proximity switch described in this embodiment includes a first protective shell 1, a proximity switch body 3 is threadedly connected to one end of the first protective shell 1, a sensing end 17 is provided at the end of the proximity switch body 3 away from the first protective shell 1, a protective sleeve is fixedly connected to the upper end of the proximity switch body 3, a second protective shell 2 is installed at one end of the first protective shell 1, a fixing block 6 is symmetrically fixedly connected to the inside of the second protective shell 2, the fixing block 6 protrudes from the end of the second protective shell 2 close to the first protective shell 1, a connecting mechanism 7 is installed inside the fixing block 6, fixing mechanisms 11 are symmetrically installed inside the upper ends of the first protective shell 1 and the second protective shell 2, a first protective column 13 is installed at one end of the first protective shell 1 close to the second protective shell 2, and a second protective column 14 is installed at one end of the second protective shell 2 close to the first protective shell 1;

[0025] The connecting mechanism 7 includes a cavity 71, a first return spring 72, a movable plate 73, a positioning block 74, a slider 75 and a first push block 76. The fixed block 6 is provided with a cavity 71 inside. The first return spring 72 is symmetrically fixedly connected to one end of the cavity 71. The movable plate 73 is fixedly connected to the other end of the first return spring 72. The end of the movable plate 73 away from the first return spring 72 is fixedly connected to the positioning block 74. The positioning block 74 penetrates the fixed block 6 and protrudes from the upper end of the fixed block 6. The movable plate 73 is fixedly connected to a slider 75 at one end. The slider 75 penetrates the fixed block 6 and protrudes from one end of the fixed block 6. The end of the slider 75 away from the movable plate 73 is fixedly connected to the first push block 76. Both ends of the second protective shell 2 are symmetrically provided with slide grooves 8. The slide grooves 8 are connected to the cavity 71. The slider 75 is slidably connected to the slide grooves 8. The first protective shell 1 is symmetrically provided with fixed grooves 9 at one end close to the second protective shell 2. The fixed groove 9 is plugged into the fixed block 6, and a positioning groove 10 is provided at one end of the fixed groove 9. The positioning groove 10 is plugged into the positioning block 74. The first protective shell 1 is symmetrically provided with a limiting hole 5 at the chamfer of one end close to the second protective shell 2. The second protective shell 2 is symmetrically fixedly connected to the limiting column 4 at the chamfer of one end close to the first protective shell 1. The limiting column 4 is plugged into the limiting hole 5. The user pushes the first push block 76 downward, and the slider 75 slides in the slide groove 8. The movable plate 73 drives the positioning block 74 to retract into the cavity 71, and then the first protective shell 1 and the second protective shell 2 are merged. The limiting column 4 is plugged into the limiting hole 5, and the fixed block 6 is plugged into the fixed groove 9. Then the push block is released, the first reset spring 72 is reset, and the movable plate 73 drives the positioning block 74 to pop out and plug and fix with the positioning groove 10 to complete the installation between the first protective shell 1 and the second protective shell 2.

[0026] refer to Figures 2 to 6 A slot 16 is symmetrically provided at one end of the first protective column 13 close to the second protective column 14, and an insert block 15 is symmetrically fixedly connected to one end of the second protective column 14 close to the first protective column 13. The insert block 15 and the slot 16 are plug-in. The user combines the first protective shell 1 and the second protective shell 2, and inserts the insert block 15 into the slot 16 to complete the installation between the first protective column 13 and the second protective column 14.

[0027] refer to Figure 5The fixing mechanism 11 includes an accommodating chamber 111, a second return spring 112, a connecting block 113, a moving column 114, an arc-shaped clamping plate 115, a moving block 116 and a second pushing block 117. The first protective shell 1 and the second protective shell 2 are symmetrically provided with an accommodating chamber 111 inside the upper ends. The second return spring 112 is symmetrically fixedly connected to one end of the accommodating chamber 111. The second return spring 112 is fixedly connected to the connecting block 113 at the other end. The connecting block 113 is fixedly connected to the moving column 114 at one end away from the second return spring 112. The moving column 114 passes through the first protective shell 1 and the second protective shell 2 respectively and protrudes into the first protective column 13 and the second protective column 14. The moving column 114 is fixedly connected to the arc-shaped clamping plate 115 at one end away from the connecting block 113. The moving block 116 is fixedly connected to the upper end of the connecting block 113. The moving block 116 extends out of the upper ends of the first protective shell 1 and the second protective shell 2 respectively, and the end of the moving block 116 away from the connecting block 113 is fixedly connected with the second push block 117. The upper ends of the first protective shell 1 and the second protective shell 2 are symmetrically provided with moving grooves 12, and the moving grooves 12 are connected with the accommodating chamber 111. The moving grooves 12 and the moving columns 114 are slidably connected. The user pushes the second push blocks 117 to both sides, and the moving block 116 slides inside the moving grooves 12. The connecting block 113 drives the moving column 114 to retract into the accommodating chamber 111, and then connects the connecting line with the inductive proximity switch. At the same time, the second push block 117 is released, the second reset spring 112 is reset, and the connecting block 113 drives the moving column 114 to return to its position, so that the arc clamping plate 115 clamps the connecting line, thereby completing the fixation of the connecting line of the inductive proximity switch.

[0028] refer to Figure 7 A through slot 18 is provided at one end of the second protective shell 2 away from the first protective shell 1, and a movable slot 19 is provided inside the through slot 18. A baffle 20 is symmetrically slidably connected inside the movable slot 19. T-shaped slots 21 are symmetrically provided at the upper and bottom ends of the movable slot 19. T-shaped blocks 22 are symmetrically fixedly connected to the upper and bottom ends of the baffle 20. The T-shaped blocks 22 and the T-shaped slots 21 are slidably connected. A push slot 23 is symmetrically provided at one end of the second protective shell 2 away from the first protective shell 1. The push slot 23 is connected to the movable slot 19. A third push block 25 is fixedly connected to the end of the baffle 20 close to the push slot 23. The third push block 25 is slidably connected to the push slot 23. The user pushes the third push block 25, and the push block 24 slides in the push slot 23. The baffle 20 slides in the movable slot 19. At the same time, the T-shaped block 22 slides inside the T-shaped slot 21, so that the baffle 20 is merged or opened on both sides, thereby completing the adjustment of the opening degree of the through slot 18.

[0029] Principle and advantages of use: The user connects the proximity switch body 3 to the inside of the first protective shell 1 by threading, and then pushes the first push block 76 downward, the slider 75 slides in the slide groove 8, and the moving plate 73 drives the positioning block 74 to retract into the cavity 71, and then merges the first protective shell 1 and the second protective shell 2, the limiting column 4 is inserted into the limiting hole 5, the fixing block 6 is inserted into the fixing groove 9, and the insert block 15 is inserted into the slot 16 at the same time, and then the push block is released, the first reset spring 72 is reset, and the moving plate 73 drives the positioning block 74 to pop out and plug and fix it with the positioning groove 10, completing the installation between the first protective shell 1 and the second protective shell 2, and the user pushes the two The second push block 117 is pushed sideways, the moving block 116 slides inside the moving groove 12, the connecting block 113 drives the moving column 114 to retract into the accommodating chamber 111, and then the connecting line is connected to the inductive proximity switch, and the second push block 117 is released at the same time, the second reset spring 112 is reset, the connecting block 113 drives the moving column 114 to return to its position, so that the arc clamping plate 115 clamps the connecting line, and the user pushes the third push block 25, the pushing block 24 slides in the pushing groove 23, the baffle 20 slides in the movable groove 19, and the T-shaped block 22 slides inside the T-shaped groove 21, so that the baffle 20 is merged or opened on both sides, and the opening degree of the through groove 18 is adjusted;

[0030] The utility model can effectively protect the inductive switch from the influence of the external environment, such as dust, water vapor, chemicals, etc., thereby extending its service life, can prevent the inductive switch from being accidentally touched or damaged by external objects, improve the safety of the equipment, and ensure that the connection between the connecting line and the inductive proximity switch is stable and reliable, prevent the connection from loosening or falling off due to external pulling or vibration, and at the same time reduce the friction and vibration between the connecting line and the inductive proximity switch, thereby extending the service life of the connecting parts, and can flexibly control the sensitivity of the sensing end 17 to the external magnetic field, so that the inductive switch can adapt to different working environments and application requirements.

Claims

1. An inductive proximity switch, comprising a first protective shell, characterized in that: A proximity switch body is threadedly connected to one end of the first protective shell, a sensing end is provided at one end of the proximity switch body away from the first protective shell, a protective cover is fixedly connected to the upper end of the proximity switch body, a second protective shell is installed at one end of the first protective shell, a fixing block is symmetrically fixedly connected to the inside of the second protective shell, the fixing block protrudes out of the second protective shell close to one end of the first protective shell, a connecting mechanism is installed inside the fixing block, fixing mechanisms are symmetrically installed inside the upper ends of the first protective shell and the second protective shell, a first protective column is installed at one end of the first protective shell close to the second protective shell, and a second protective column is installed at one end of the second protective shell close to the first protective shell; The connecting mechanism includes a cavity, a first return spring, a movable plate, a positioning block, a slider and a first pushing block, a cavity is opened inside the fixed block, one end of the cavity is symmetrically fixedly connected to the first return spring, the other end of the first return spring is fixedly connected to the movable plate, the end of the movable plate away from the first return spring is fixedly connected to the positioning block, the positioning block penetrates the fixed block and protrudes from the upper end of the fixed block, one end of the movable plate is fixedly connected to the slider, the slider penetrates the fixed block and protrudes from one end of the fixed block, and the end of the slider away from the movable plate is fixedly connected to the first pushing block.

2. The inductive proximity switch according to claim 1, characterized in that: Both ends of the second protective shell are symmetrically provided with sliding grooves, the sliding grooves are communicated with the cavity, and the sliding block is slidably connected with the sliding grooves.

3. The inductive proximity switch according to claim 1, characterized in that: A fixing groove is symmetrically provided at one end of the first protective shell close to the second protective shell, and the fixing groove is plugged into the fixing block. A positioning groove is provided at one end inside the fixing groove, and the positioning groove is plugged into the positioning block.

4. The inductive proximity switch according to claim 1, characterized in that: The first protective shell has symmetrically arranged limiting holes at the chamfered end close to the second protective shell, and the second protective shell has symmetrically fixedly connected limiting columns at the chamfered end close to the first protective shell, and the limiting columns are plugged into the limiting holes.

5. The inductive proximity switch according to claim 1, characterized in that: A slot is symmetrically provided at one end of the first protective column close to the second protective column, and an insert block is symmetrically fixedly connected to one end of the second protective column close to the first protective column, and the insert block is plugged into the slot.

6. The inductive proximity switch according to claim 1, characterized in that: The fixing mechanism includes an accommodating chamber, a second return spring, a connecting block, a moving column, an arcuate clamping plate, a moving block and a second pushing block, the first protective shell and the second protective shell upper ends are symmetrically provided with accommodating chambers, one end of the accommodating chamber is symmetrically fixedly connected to the second return spring, the other end of the second return spring is fixedly connected to the connecting block, the end of the connecting block away from the second return spring is fixedly connected to the moving column, the moving column respectively penetrates the first protective shell and the second protective shell and protrudes into the first protective column and the second protective column, the end of the moving column away from the connecting block is fixedly connected to the arc clamping plate, the upper end of the connecting block is fixedly connected to the moving block, the moving blocks extend out of the upper ends of the first protective shell and the second protective shell respectively, and the end of the moving block away from the connecting block is fixedly connected to the second pushing block.

7. The inductive proximity switch according to claim 1, characterized in that: The first protective shell and the second protective shell are both symmetrically provided with moving grooves at their upper ends, the moving grooves are communicated with the accommodating cavity, and the moving grooves are slidably connected with the moving columns.

8. The inductive proximity switch according to claim 1, characterized in that: A through groove is formed at one end of the second protective shell away from the first protective shell, a movable groove is formed inside the through groove, a baffle is symmetrically slidably connected inside the movable groove, T-shaped grooves are symmetrically formed at the upper and bottom ends of the movable groove, T-shaped blocks are symmetrically fixedly connected at the upper and bottom ends of the baffle, and the T-shaped block and the T-shaped groove are slidably connected.

9. The inductive proximity switch according to claim 8, characterized in that: A push groove is symmetrically formed at one end of the second protective shell away from the first protective shell, the push groove is communicated with the movable groove, a third push block is fixedly connected to one end of the baffle plate close to the push groove, and the third push block is slidably connected to the push groove.

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