Electromagnetic switch structure for eliminating false touch closing
By designing the electromagnetic switch structure of the limit component and the closing component, the problem of accidental closing of the electromagnetic switch during maintenance was solved, achieving safe and reliable power control and avoiding equipment damage and personnel danger.
Patent Information
- Application Number
- CN202423147942.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-19
AI Technical Summary
Existing electromagnetic switches are prone to accidental activation during maintenance, posing safety hazards and equipment damage risks. Common protective covers and limit components are easily damaged and difficult to detect.
An electromagnetic switch structure including a closing component, a limit component, and a knob judgment system was designed. The limit component restricts the displacement of the slide bar to ensure that the moving contact and the stationary contact are always separated. The magnetic attraction of the closing component enables reliable closing. The knob judges the limit status to avoid misoperation.
This effectively avoids the risk of accidental power-on during maintenance, improves equipment safety and lifespan, and reduces the probability of safety accidents caused by operational errors.
Smart Images
Figure CN223679942U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to an electromagnetic switch, in particular to an electromagnetic switch structure eliminating mis-touch closing. BACKGROUND
[0002] The rock mass or concrete needs to be pre-broken in the aspects of city concrete beam demolition, and tunnel rock and mine rock pre-cracking, so as to facilitate further processing.
[0003] In the rock breaking process, the high-voltage energy storage pulse power is discharged to the controllable shock wave transducer, a short pulse high voltage is formed between the discharge electrodes of the controllable shock wave transducer, the pulse high voltage breaks through the liquid medium to generate a plasma channel, and high temperature and high pressure are generated in the plasma channel after the energy is injected into the plasma channel to make the plasma channel expand outward to generate a pulse pressure wave.
[0004] Since the operating voltage and current are large, the electromagnetic switch is required to have certain anti-interference performance, that is, it can stably maintain the power-on state, and can also resist external interference to stably maintain the power-off state in the case of needing to power off the equipment, so as to avoid mis-touch during maintenance to cause closing and power-on, and cause equipment loss and harm to personnel safety. Common mis-touch prevention methods include adding a protective cover and limiting a limiting component.
[0005] Since the strength of the common protective cover is not high, it cannot effectively prevent mis-touch; therefore, limiting components are commonly used for limiting in the market; since there is a large amount of magnetic field and current in the electromagnetic switch, long-term use can accelerate the wear of the limiting component, and the state of the limiting component is not easy to detect; the limiting component is damaged during use, and the operator does not detect it, so that safety accidents are prone to occur during maintenance and maintenance. UTILITY MODEL CONTENTS
[0006] The utility model aims at providing an electromagnetic switch structure eliminating mis-touch closing, to solve the problems in the above background technology.
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0008] An electromagnetic switch structure eliminating mis-touch closing, comprising a base and a box body fixedly installed on the base;
[0009] The first support and the second support are fixedly installed on the base, the slide rod is slidingly installed on the first support, the moving contact is fixedly installed on the slide rod, the second support is provided with two groups of static contacts, and the two groups of static contacts are fixedly connected with wires;
[0010] The base is provided with a closing assembly, which can drive the moving contact to approach the static contact through the slide rod when the closing assembly acts, so that the static contact and the moving contact are attached.
[0011] The base is provided with a limiting assembly, which can limit the slide rod.
[0012] The electromagnetic switch structure for eliminating the false closing: the closing assembly comprises an iron core fixedly installed on the slide rod, and a coil wrapped around the outer periphery of the iron core; the base is fixedly installed with a button, and the button is fixedly connected with the coil; the box body is fixedly installed with a magnet on the side close to the static contact.
[0013] The electromagnetic switch structure for eliminating the false closing: the static contact is slidingly installed on the second support, and the static contact is fixedly installed with a second baffle, and the second baffle is fixedly installed with a buffer spring fixedly connected with the second support.
[0014] The electromagnetic switch structure for eliminating the false closing: the limiting assembly comprises a limiting sleeve fixedly installed on the first support; the limiting sleeve is slidingly embedded with a limiting wedge block slidingly connected with the first support, and the limiting wedge block is fixedly installed with a guide rod slidingly connected with the box body; the limiting wedge block is fixedly installed with a limiting spring fixedly connected with the box body; the guide rod is rotatably installed with a knob, and the box body is fixedly installed with a protrusion matched with the knob; the slide rod is provided with a limiting groove matched with the limiting wedge block.
[0015] The electromagnetic switch structure for eliminating the false closing: the protrusion is arc-shaped and is obliquely arranged.
[0016] The electromagnetic switch structure for eliminating the false closing: the slide rod is fixedly installed with a first baffle away from the second support, and the slide rod is wrapped with a reset spring, and the two ends of the reset spring are respectively in contact with the first baffle and the first support.
[0017] The electromagnetic switch structure for eliminating the false closing: the box body is slidingly embedded with a knob sleeve, and the knob sleeve is fixedly connected with the button.
[0018] Compared with the prior art, the electromagnetic switch structure for eliminating the mis-touch closing has the beneficial effects that: the sliding rod is limited by the limiting assembly, so that the sliding rod cannot freely displace on the first support, and thus the moving contact and the stationary contact always keep a separated state, so as to avoid that the closing assembly moves due to mis-touch or operation error in the maintenance process, and drives the moving contact and the stationary contact to resist each other, so that the equipment is in a power-on state, threatens the safety of the operator and damages the equipment; the working state of the limiting assembly can be judged through the position state of the knob, so as to facilitate the operator to make accurate judgment, and thus safety accidents are avoided. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 Structure schematic view of the electromagnetic switch structure for eliminating the mis-touch closing.
[0020] Figure 2 Structure schematic view of the closing assembly in the electromagnetic switch structure for eliminating the mis-touch closing.
[0021] Figure 3 Structure schematic view of the closing assembly in the electromagnetic switch structure for eliminating the mis-touch closing. Figure 2 Structure schematic view of another perspective of the closing assembly.
[0022] Figure 4 Structure schematic view of the closing assembly in the electromagnetic switch structure for eliminating the mis-touch closing. Figure 3 Structure schematic view of A in the closing assembly.
[0023] Figure 5 Structure schematic view of the closing assembly in the electromagnetic switch structure for eliminating the mis-touch closing. Figure 1 Structure schematic view of the closing assembly in the electromagnetic switch structure for eliminating the mis-touch closing.
[0024] Figure 6 Structure schematic view of B in the closing assembly. Figure 5 Structure schematic view of B in the closing assembly.
[0025] Figure 7 Structure schematic view of the closing assembly in the electromagnetic switch structure for eliminating the mis-touch closing. Figure 1 Structure schematic view of the closing assembly in the electromagnetic switch structure for eliminating the mis-touch closing.
[0026] In the drawing: 1, base; 101, first support; 102, second support;
[0027] 2, box body; 201, protrusion; 202, knob sleeve;
[0028] 3, button; 301, coil;
[0029] 4, sliding rod; 401, first baffle; 402, moving contact; 403, iron core; 404, limiting groove;
[0030] 5, reset spring;
[0031] 6, stationary contact; 601, second baffle;
[0032] 7, buffer spring;
[0033] 8, wire;
[0034] 9. Limiting sleeve;
[0035] 10. Limiting wedge; 1001, guide rod;
[0036] 11. Limiting spring;
[0037] 12. Knob;
[0038] 13. Magnet. DETAILED DESCRIPTION
[0039] 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, rather than all the embodiments.
[0040] Please refer to Figures 1-7 As an embodiment of the utility model, the electromagnetic switch structure for eliminating false touch closing includes a base 1 and a box body 2 fixedly installed on the base 1.
[0041] The first support 101 and the second support 102 are fixedly installed on the base 1, the slide rod 4 is slidingly installed on the first support 101, the moving contact 402 is fixedly installed on the slide rod 4, two groups of static contacts 6 are arranged on the second support 102, and the two groups of static contacts 6 are fixedly connected with wires 8.
[0042] The base 1 is provided with a closing assembly, when the closing assembly acts, the slide rod 4 can drive the moving contact 402 to approach the static contact 6, so that the static contact 6 is attached to the moving contact 402.
[0043] The base 1 is provided with a limiting assembly, and the limiting assembly can limit the slide rod 4.
[0044] In this embodiment, the two wires 8 are connected with the power supply and the load device respectively; when the moving contact 402 is attached to the two static contacts 6, the two static contacts 6 will be in a conduction state, that is, the power supply can supply power to the load device; when the moving contact 402 is separated from the two static contacts 6, the power supply will not supply power to the load device.
[0045] When the closing assembly acts, the slide rod 4 can be driven to slide on the first support 101 to the direction of the second support 102, so as to drive the moving contact 402 to approach the static contact 6 until the moving contact 402 is attached to the static contact 6; then the closing assembly can keep the attachment state of the two, so that the power supply continuously supplies power to the load device.
[0046] When the load device needs to be maintained, the power supply for the load device needs to be removed to perform non-live operation to protect the safety of the operator; at this time, the static contact 6 and the moving contact 402 are in a separated state, and the limiting assembly acts.
[0047] The limiting assembly limits the sliding rod 4 so that the sliding rod 4 cannot freely displace on the first support 101, so that the moving contact 402 and the static contact 6 are always kept in a separated state, to avoid that, during the maintenance process, due to a mistake or an operation error, the closing assembly acts to drive the moving contact 402 and the static contact 6 to abut, so that the device is in a power-on state, which threatens the safety of the operator and damages the device.
[0048] After the maintenance is completed, the limiting assembly releases the limitation on the sliding rod 4, so that the closing assembly can drive the sliding rod 4 to act when the closing assembly acts.
[0049] As a further scheme of the utility model, the closing assembly comprises an iron core 403 fixedly installed on the sliding rod 4, and a coil 301 wrapped around the outer periphery of the iron core 403; the base 1 is fixedly installed with a button 3, and the button 3 is fixedly connected with the coil 301; the box body 2 is fixedly installed with a magnet 13 on the side close to the static contact 6.
[0050] In this embodiment, in the initial state, the static contact 6 and the moving contact 402 are in a separated state, the coil 301 is in a non-power-on state, the magnetic force of the magnet 13 cannot drive the iron core 403 to displace, the power supply does not supply power to the load device, the button 3 is loaded with a direct current power supply, and pressing the button 3 can make the direct current power supply supply power to the coil 301, so that the coil 301 is in a power-on state; pressing the button 3 can disconnect the power-on state of the coil 301.
[0051] When closing is needed, the coil 301 is in a power-on state by pressing the button 3, and due to the fact that the coil 301 wraps the iron core 403, under the action of electromagnetic induction, the iron core 403 has magnetism, and through the mutual attraction with the magnet 13, the iron core 403 is driven to move towards the magnet 13, so as to drive the sliding rod 4 to slide on the first support 101 towards the second support 102, so as to drive the moving contact 402 to move towards the static contact 6 until the moving contact 402 abuts against the static contact 6.
[0052] The closing assembly drives the moving contact 402 and the static contact 6 to abut, so that the power supply supplies power to the load device, which can reliably and relatively simply realize the closing function, and after closing, it is relatively stable and will not be disconnected due to external interference.
[0053] As a further scheme of the utility model, the static contact 6 is slidably installed on the second support 102, a second baffle 601 is fixedly installed on the static contact 6, and a buffer spring 7 fixedly connected with the second support 102 is fixedly installed on the second baffle 601.
[0054] In this embodiment, when the closing assembly is in action, the displacement distance of the iron core 403 is slightly greater than the distance between the moving contact 402 and the static contact 6 in the initial state; that is, when the moving contact 402 is in action, the moving contact 402 will first abut against the static contact 6, then the moving contact 402 will displace the static contact 6 until the iron core 403 reaches the maximum displacement position; during the displacement of the static contact 6, the static contact 6 slides on the second support 102 in a direction away from the first support 101 and will compress the buffer spring 7 through the second baffle 601; so as to avoid rigid collision between the moving contact 402 and the static contact 6 during the displacement of the moving contact 402 and increase the loss of the static contact 6, thereby improving the service life of the switch.
[0055] As a further scheme of the utility model, the limiting assembly comprises a limiting sleeve 9 fixedly installed on the first support 101; a limiting wedge 10 slidably connected with the first support 101 is slidably embedded in the limiting sleeve 9, a guide rod 1001 is fixedly installed on the limiting wedge 10, and the guide rod 1001 is slidably connected with the box body 2; a limiting spring 11 fixedly connected with the box body 2 is fixedly installed on the limiting wedge 10; a knob 12 is rotatably installed on the guide rod 1001, and a protrusion 201 matched with the knob 12 is fixedly installed on the box body 2; a limiting groove 404 matched with the limiting wedge 10 is formed in the slide rod 4.
[0056] In this embodiment, in the initial state, the elastic force of the limiting spring 11 will make the limiting wedge 10 located in the limiting groove 404, and at this time, the knob 12 is separated from the protrusion 201; and the moving contact 402 and the static contact 6 are in a separated state.
[0057] Through the mutual abutment of the limiting groove 404 and the limiting wedge 10, the displacement of the slide rod 4 is limited, so that the separated state of the moving contact 402 and the static contact 6 remains unchanged.
[0058] When the limiting state of the limiting assembly to the slide rod 4 is needed, the knob 12 is rotated, and during the rotation of the knob 12, the knob 12 will be matched with the protrusion 201 to drive the knob 12 to gradually move away from the box body 2; thereby driving the guide rod 1001 to slide outward on the box body 2, so as to drive the limiting wedge 10 to slide inward in the limiting sleeve 9; and the limiting spring 11 is compressed; during this process, the limiting wedge 10 will be separated from the limiting groove 404.
[0059] Then the closing assembly is driven to act, so as to drive the slide rod 4 to slide, so that the moving contact 402 abuts against the static contact 6.
[0060] The slide rod 4 is limited by the limiting assembly, so that the slide rod 4 cannot freely displace on the first support 101, so that the moving contact 402 and the static contact 6 are always kept in a separated state, so that the closing assembly is not actuated due to mistaken touch or operation error during maintenance, the moving contact 402 and the static contact 6 are brought into contact, the equipment is in a power-on state, the safety of the operator is threatened, and the equipment is damaged.
[0061] As a further scheme of the utility model, the protrusion 201 is arc-shaped and is arranged obliquely.
[0062] In this embodiment, the protrusion 201 is arranged in the rotation range of the knob 12; the protrusion 201 is arranged obliquely, and the knob 12 will be in contact with the protrusion 201 during rotation, and then the knob 12 will slide on the protrusion 201 to gradually move away from the box body 2; so as to drive the limiting wedge 10 to separate from the limiting groove 404.
[0063] As a further scheme of the utility model, the slide rod 4 is fixedly installed with a first baffle 401 away from the second support 102, a return spring 5 is wrapped around the slide rod 4, and the two ends of the return spring 5 are in contact with the first baffle 401 and the first support 101 respectively.
[0064] In this embodiment, after the button 3 is pressed, the coil 301 is electrified, so that the iron core 403 has magnetism; so as to drive the slide rod 4 to slide on the first support 101 towards the second support 102, so as to drive the first baffle 401 to displace synchronously to compress the return spring 5.
[0065] The button 3 is pressed again, so that the coil 301 is in a power-off state, at this time, the iron core 403 loses magnetism, so as to be unable to cooperate with the magnet 13; under the elastic force of the return spring 5, the first baffle 401 drives the slide rod 4 to slide and reset; so as to separate the moving contact 402 from the static contact 6.
[0066] During the resetting process, under the elastic force of the limiting spring 11, the limiting wedge 10 is in contact with the slide rod 4 and slides; after the slide rod 4 is reset, the limiting wedge 10 is separated from the slide rod 4 and is aligned with the limiting groove 404; then under the elastic force of the limiting spring 11, the limiting wedge 10 slides on the limiting sleeve 9 towards the limiting groove 404; until the limiting wedge 10 enters the limiting groove 404, the limiting groove 404 and the limiting wedge 10 are in contact with each other, so as to limit the slide rod 4.
[0067] During the process that the limiting wedge 10 enters the limiting groove 404, the guide rod 1001 drives the knob 12 to move towards the box body 2, cooperates with the obliquely arranged protrusion 201, and drives the knob 12 to rotate and reset.
[0068] The position state of the knob 12 (separated from the protrusion 201 or in contact with the protrusion 201) can determine the working state of the limiting assembly (limiting the displacement of the slide rod 4 or releasing the limitation on the slide rod 4), so that the operator can make accurate judgment, thereby avoiding safety accidents.
[0069] As a further scheme of the present application, the box 2 is slidably embedded with a knob sleeve 202, and the knob sleeve 202 is fixedly connected with the button 3.
[0070] In this embodiment, the button 3 is actuated by pressing the knob sleeve 202, and the knob sleeve 202 can reduce the friction consumption of the button 3, thereby prolonging the service life of the button 3.
[0071] The above embodiments are exemplary but not restrictive, and the technical solutions of the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application, which are all included in the present application.
Claims
1. A false touch closing electromagnetic switch structure, comprising a base (1) and a box (2) fixedly installed on the base (1); characterized in that A first support (101) and a second support (102) are fixedly installed on the base (1), a sliding rod (4) is slidingly installed on the first support (101), a moving contact (402) is fixedly installed on the sliding rod (4), two groups of static contacts (6) are arranged on the second support (102), and each group of static contacts (6) is fixedly connected with a wire (8); A closing assembly is arranged on the base (1), and when the closing assembly acts, the moving contact (402) can be driven by the sliding rod (4) to approach the static contact (6), so that the static contact (6) is combined with the moving contact (402). A limiting assembly is arranged on the base (1), and the limiting assembly can limit the sliding rod (4).
2. The electromagnetic switch structure according to claim 1, wherein The closing assembly comprises an iron core (403) fixedly installed on the sliding rod (4), and a coil (301) is wrapped around the outer periphery of the iron core (403); a button (3) is fixedly installed on the base (1), and the button (3) is fixedly connected with the coil (301); and a magnet (13) is fixedly installed on one side of the box (2) close to the static contact (6).
3. The electromagnetic switch structure according to claim 2, wherein The static contact (6) is slidingly installed on the second support (102), a second baffle (601) is fixedly installed on the static contact (6), and a buffer spring (7) fixedly connected with the second support (102) is fixedly installed on the second baffle (601).
4. The electromagnetic switch structure according to claim 3, wherein The limiting assembly comprises a limiting sleeve (9) fixedly installed on the first support (101); a limiting wedge (10) slidingly connected with the first support (101) is slidingly embedded in the limiting sleeve (9), a guide rod (1001) is fixedly installed on the limiting wedge (10), and the guide rod (1001) is slidingly connected with the box (2); a limiting spring (11) fixedly connected with the box (2) is fixedly installed on the limiting wedge (10); a knob (12) is rotatably installed on the guide rod (1001), a protrusion (201) matched with the knob (12) is fixedly installed on the box (2); and a limiting groove (404) matched with the limiting wedge (10) is formed in the sliding rod (4).
5. The electromagnetic switch structure according to claim 4, wherein The protrusion (201) is arc-shaped and is arranged obliquely.
6. The electromagnetic switch structure according to claim 5, wherein A first baffle (401) is fixedly installed on the sliding rod (4) away from the second support (102), a reset spring (5) is wrapped around the sliding rod (4), and the two ends of the reset spring (5) abut against the first baffle (401) and the first support (101) respectively.
7. The electromagnetic switch structure according to claim 2, wherein A knob sleeve (202) is slidingly embedded in the box (2), and the knob sleeve (202) is fixedly connected with the button (3).