Limit switch capable of preventing mistaken touch and alarming

Abstract

The utility model discloses a limit switch capable of preventing mistaken touch and alarming, which relates to the technical field of limit switches and comprises a limit switch body, one side of the top of the limit switch body is fixedly connected with a mounting sleeve, the top of the limit switch body is fixedly connected with a fixed seat, and the fixed seat is positioned on one side of the mounting sleeve. Meanwhile, alarm equipment is integrated in the limit switch body, a rotary detection arm in the limit switch body extends to the outer side of the limit switch body through a mounting sleeve, a worm gear is fixedly connected to the top of the detection arm, and an induction sleeve is fixedly connected to the top of the worm gear. According to the limit switch capable of preventing mistaken touch and alarming, when one of the adjusting blocks is not in contact with the adjusting block for a long time or the other adjusting block is in contact with the induction sleeve for multiple times, the alarm equipment in the limit switch body can buzz to remind a user, so that the limit switch body is prevented from being displaced due to mistaken touch of equipment or personnel; and the device damage caused by continuous operation due to movement device failure is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of limit switch, concretely is a limit switch that can prevent false touch alarm. BACKGROUND

[0002] Limit switch is a kind of switch for detecting and limiting mechanical position, is widely used in automation equipment, manipulator, conveying system and various industrial equipment.

[0003] The movement assembly of the existing limit switch is inconvenient to adjust, and the adjustment degree is inconvenient to observe.

[0004] In order to overcome the above defects, the prior art (publication number: CN216925421U) discloses a kind of limit switch, comprising: main body, control circuit and rotating shaft are arranged in the inside of main body, rocker arm is arranged on main body, one end of rocker arm is connected with rotating shaft, rocker arm can drive rotating shaft to rotate, to make control circuit disconnect or connect;Scale line, scale line is arranged on main body, scale line extends along first path, first path is arranged as circular arc and its center of circle coincides with the rotation center of rocker arm;And pointer, pointer has opposite first end and second end, first end is connected with rocker arm, pointer can rotate with rocker arm, to make second end point at different scale of scale line.The limit switch can accurately identify the rotation angle of the rocker arm on the limit switch, and it is very convenient when resetting the rocker arm.

[0005] Although the prior art can overcome the above-mentioned deficiencies, there are still other problems in its operation process: when the limit switch and the movement device support are misaligned, the movement assembly of the limit switch is easy to collide with the device and misaligned, causing damage. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a kind of limit switch that can prevent false touch alarm, to solve the problem that limit switch and movement device support are misaligned in the above background art, limit switch movement assembly is easy to collide with the device and misaligned, causing damage.

[0007] To achieve the above object, the utility model provides the following technical scheme: a kind of limit switch that can prevent false touch alarm, including limit switch body, the limit switch body top side is fixedly connected with installation sleeve, and limit switch body top is fixedly connected with fixed seat, and fixed seat is located installation sleeve side, while limit switch body interior is integrated with alarm device;

[0008] The rotating detection arm in the limit switch body extends to the outside of the limit switch body through the mounting sleeve, and a worm wheel is fixedly connected to the top of the worm wheel, and an induction sleeve is fixedly connected to the top of the worm wheel, and an adjusting structure is arranged in the induction sleeve, and the detection structure comprises a movement strip slidingly connected in the induction sleeve, and two symmetrically distributed adjusting blocks are slidingly connected in the movement strip;

[0009] The adjusting structure for adjusting the angle of the movement strip at the top of the limit switch body is arranged in the mounting sleeve.

[0010] Preferably, symmetrically distributed sliding grooves are arranged on both sides of the movement strip, and the adjusting blocks are fixedly connected in the sliding grooves, a screw rod is rotatably connected in the middle of the movement strip, the screw rod is oppositely threaded at both ends, and the screw rod is screw-connected in the middle of the adjusting block.

[0011] Preferably, scale lines are arranged on both sides of the top of the movement strip, and pointers are fixedly connected on both sides of the top of the adjusting block, the pointers are located at the top of the movement strip at both ends, and the pointers point to the scale lines at the top of the movement strip.

[0012] Preferably, a threaded hole is arranged in the middle of the adjusting block, and the threaded hole is screw-connected to the outside of the screw rod, two symmetrically distributed mounting holes are arranged in the adjusting block, and a spring is fixedly connected in each mounting hole.

[0013] Preferably, a sliding rod is slidingly connected in the mounting hole, one end of the sliding rod in the mounting hole is slidingly connected with the spring, a sliding block is fixedly connected at the end of the two sliding rods away from the mounting hole, a hole is arranged in the middle of the sliding block, and the screw rod penetrates through the hole.

[0014] Preferably, the adjusting structure comprises a worm arranged outside the worm wheel, and one end of the worm is rotatably connected in the fixed seat through one side of the mounting sleeve.

[0015] Preferably, the worm wheel is fixedly connected to the top of the induction sleeve, a fixed disc is slidingly connected in the induction sleeve, a fixed bolt is rotatably connected in the middle of the top of the fixed disc, the fixed bolt is screw-connected to the middle of the top of the sliding block, and the bottom of the fixed disc is attached to the top of the movement strip.

[0016] Compared with the prior art, the present utility model has the following beneficial effects:

[0017] The limit switch can prevent false touch alarm, when one of the adjusting blocks is not in contact with the adjusting block for a long time, or one adjusting block repeatedly contacts the induction sleeve, the alarm device in the limit switch body will issue a buzzing sound to remind the user, preventing the limit switch body from being displaced due to false touch of equipment or personnel, and preventing the movement device from continuing to run due to failure, thereby preventing damage to the device;

[0018] Further, the worm drives the worm gear to rotate in the installation sleeve during the installation of the limit switch body, so as to adjust the angle of the induction sleeve on the top of the worm gear, and further adjust the initial angle of the movement strip, thereby facilitating the installation of the limit switch body, and the movement strip is fixed in the induction sleeve by rotating the fixing bolt to drive the fixing disc between the installation of the movement strip and the movement device, so that the movement center of the movement strip during the periodic movement is always kept in the middle of the induction sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;

[0020] Figure 2 It is an installation sleeve structure schematic diagram of the utility model;

[0021] Figure 3 It is a worm gear structure schematic diagram of the utility model;

[0022] Figure 4 It is a fixing disc structure schematic diagram of the utility model;

[0023] Figure 5 It is a movement strip structure schematic diagram of the utility model;

[0024] Figure 6 It is an adjusting block section structure schematic diagram of the utility model.

[0025] In the drawing: 1, limit switch body; 2, installation sleeve; 3, fixed seat; 4, worm gear; 5, induction sleeve; 6, movement strip; 7, sliding slot; 8, adjusting block; 9, screw rod; 10, pointer; 11, threaded hole; 12, mounting hole; 13, spring; 14, sliding rod; 15, sliding block; 16, worm; 17, fixing disc; 18, fixing bolt. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model. EMBODIMENT

[0027] Please refer to Figure 1 - Figure 6 The utility model provides the following technical scheme:

[0028] The application discloses a limit switch capable of preventing false touch alarm, which comprises a limit switch body 1, a mounting sleeve 2 fixedly connected to one side of the top of the limit switch body 1, a fixed seat 3 fixedly connected to the top of the limit switch body 1, and an alarm device integrated in the limit switch body 1.

[0029] A rotating detection arm in the limit switch body 1 extends to the outside of the limit switch body 1 through the mounting sleeve 2, a worm wheel 4 is fixedly connected to the top of the detection arm, an induction sleeve 5 is fixedly connected to the top of the worm wheel 4, and an adjusting structure is arranged in the induction sleeve 5.

[0030] The mounting sleeve 2 is internally provided with an adjusting structure for adjusting the angle of the motion strip 6 at the top of the limit switch body 1.

[0031] The motion strip 6 is internally provided with symmetrically-distributed sliding grooves 7, the adjusting blocks 8 are fixedly connected to the inside of the sliding grooves 7, a screw rod 9 is rotationally connected to the middle of the motion strip 6, the screw rod 9 is oppositely threaded at two ends, and the screw rod 9 is screw-connected to the middle of the adjusting block 8.

[0032] The top of the motion strip 6 is provided with scale lines on both sides, the adjusting blocks 8 are fixedly connected with pointers 10 on both sides of the top of the motion strip 6, the pointers 10 are located at the top of the motion strip 6 at two ends, and the pointers 10 are directed to the scale lines at the top of the motion strip 6.

[0033] The middle of the adjusting block 8 is provided with a threaded hole 11, the threaded hole 11 is screw-connected to the outside of the screw rod 9, the adjusting block 8 is internally provided with two symmetrically-distributed mounting holes 12, and each mounting hole 12 is fixedly connected with a spring 13.

[0034] The mounting holes 12 are slidably connected with sliding rods 14, one end of each sliding rod 14 in the mounting hole 12 is slidably connected with the spring 13, the sliding rods 14 are fixedly connected with sliding blocks 15 away from the mounting holes 12, the sliding blocks 15 are provided with an opening in the middle, and the screw rod 9 penetrates through the opening.

[0035] During the use of the device, first, one end of the motion strip 6 is connected with the motion device, when the device starts to move, the motion strip 6 will be driven to slide in the induction sleeve 5, the detection of the switch is realized through the sliding distance of the motion strip 6 in the induction sleeve 5, and then the detection of the motion state of the motion strip 6 is realized to realize the control of the switch, during the sliding of the motion strip 6 in the induction sleeve 5, the adjusting block 8 will be in contact with the two sides of the induction sleeve 5 periodically, at this time, the slider 15 on one side of the adjusting block 8 will be pushed by the induction sleeve 5, and then the slider 15 drives the slide rod 14 to slide in the mounting hole 12, each time the slider 15 drives the slide rod 14 to move in the mounting hole 12, the switch control of the device in the limit switch body 1 is triggered;

[0036] When the motion strip 6 slides in the induction sleeve 5, the adjusting block 8 is driven to slide in the motion strip 6 by rotating the screw rod 9, because the thread directions of the two ends of the screw rod 9 are opposite, the screw rod 9 will drive the adjusting block 8 to move in the motion strip 6 in the opposite direction synchronously, and then the different motion amplitudes of different devices are adapted, and the detection efficiency of the device is improved;

[0037] During the movement of the motion strip 6, the adjusting block 8 will be in contact with the two sides of the induction sleeve 5 periodically, and the two adjusting blocks 8 are in spaced contact with the induction sleeve 5 each time, when one of the adjusting blocks 8 does not contact with the adjusting block 8 for a long time, or one adjusting block 8 contacts with the induction sleeve 5 for many times, at this time, the alarm device in the limit switch body 1 will issue a buzzing sound to remind the user, so that the limit switch body 1 is prevented from being displaced due to the false touch of the device or the personnel, and the device damage caused by the continued operation of the motion device failure is prevented. Embodiment

[0038] On the basis of the first embodiment, an adjusting structure is also disclosed, and the specific structure is as follows:

[0039] The adjusting structure comprises a worm 16 in the inner core of the worm gear 4, and one end of the worm 16 penetrates through one side of the mounting sleeve 2 and is rotationally connected in the fixed seat 3.

[0040] The top of the worm gear 4 is fixedly connected with the induction sleeve 5, the induction sleeve 5 is slidably connected with a fixed disc 17, the middle top of the fixed disc 17 is rotationally connected with a fixed bolt 18, the fixed bolt 18 is threadedly connected with the middle top of the slider 15, and the bottom of the fixed disc 17 is in close contact with the top of the motion strip 6.

[0041] In the process of installing the limit switch body 1, first, the cable is connected with the electronic components inside the limit switch body 1 through the opening in the end of the limit switch body 1, and in the process of installing the limit switch body 1, the worm 16 drives the worm wheel 4 to rotate inside the installing sleeve 2, thereby adjusting the angle of the induction sleeve 5 on the top of the worm wheel 4, and further adjusting the initial angle of the movement strip 6, thereby facilitating the installation of the limit switch body 1, and rotating the fixing bolt 18 between the installation of the movement strip 6 and the movement device to drive the fixing disc 17 to fix the movement strip 6 in the middle of the induction sleeve 5, so that the movement center of the movement strip 6 during periodic movement always remains in the middle of the induction sleeve 5.

[0042] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the term "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be direct connection, or indirect connection through intermediate medium. For ordinary skilled person in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to specific circumstances.

[0043] Although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical scheme recorded in the foregoing embodiments can be modified, or part of the technical features can be replaced equivalently, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A false touch proof alarm limit switch, comprising a limit switch body (1), one side of the top of the limit switch body (1) is fixedly connected with a mounting sleeve (2), the top of the limit switch body (1) is fixedly connected with a fixed seat (3), and the fixed seat (3) is located on one side of the mounting sleeve (2), and the limit switch body (1) is integrated with an alarm device inside; characterized in that The rotating detection arm inside the limit switch body (1) extends to the outside of the limit switch body (1) through the mounting sleeve (2), and the detection arm is fixedly connected with a worm wheel (4) at the top, the worm wheel (4) is fixedly connected with a sensing sleeve (5) at the top, and the sensing sleeve (5) is provided with an adjusting structure inside, the detection structure comprises a movement strip (6) slidably connected inside the sensing sleeve (5), and two symmetrically distributed adjusting blocks (8) are slidably connected inside the movement strip (6). The mounting sleeve (2) is provided with an adjusting structure inside for adjusting the angle of the movement strip (6) at the top of the limit switch body (1).

2. The anti-bump alarm limit switch according to claim 1, characterized in that: The movement strip (6) is provided with symmetrically distributed sliding grooves (7) on both sides inside, and the adjusting blocks (8) are fixedly connected inside the sliding grooves (7), a lead screw (9) is rotatably connected in the middle of the movement strip (6), the screw threads of the lead screw (9) are opposite at both ends, and the lead screw (9) is screw connected in the middle of the adjusting block (8) inside.

3. The anti-bump alarm limit switch according to claim 2, wherein: The top of the movement strip (6) is provided with scale lines on both sides, the adjusting blocks (8) are fixedly connected with pointers (10) on both sides at the top, the pointers (10) are located at the top of the movement strip (6) at both ends, and the pointers (10) point to the scale lines at the top of the movement strip (6).

4. The anti-bump alarm limit switch according to claim 3, characterized in that: The adjusting block (8) is provided with a threaded hole (11) in the middle, and the threaded hole (11) is screw connected to the outside of the lead screw (9), the adjusting block (8) is provided with two symmetrically distributed mounting holes (12) inside, and each mounting hole (12) is fixedly connected with a spring (13) inside.

5. The anti-bump alarm limit switch according to claim 4, wherein: The mounting hole (12) is slidably connected with a sliding rod (14), one end of the sliding rod (14) inside the mounting hole (12) is slidably connected with the spring (13), and the other end of the two sliding rods (14) away from the mounting hole (12) is fixedly connected with a sliding block (15), the sliding block (15) is provided with an opening in the middle, and the lead screw (9) penetrates through the opening inside.

6. The limit switch capable of preventing accidental collision and alarming according to claim 5, characterized in that: The adjusting structure comprises a worm (16) inside the worm wheel (4), and one end of the worm (16) penetrates through one side of the mounting sleeve (2) and is rotatably connected inside the fixed seat (3).

7. The anti-bump alarm limit switch according to claim 6, wherein: The worm wheel (4) is fixedly connected with a sensing sleeve (5) at the top, and the sensing sleeve (5) is slidably connected with a fixed disc (17) inside, the fixed disc (17) is rotatably connected with a fixed bolt (18) at the top in the middle, the fixed bolt (18) is screw connected to the middle of the top of the sliding block (15), and the fixed disc (17) is attached to the top of the movement strip (6) at the bottom.

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