An emergency stop switch

Abstract

The utility model relates to an emergency stop switch, including switch casing, install the cavity and button mouth to be opened in switch casing, be equipped with the base, movable seat and spacing assembly seat in install the cavity, the movable setting of button mouth has movable cylinder, the lower extreme of movable cylinder is detachably connected with spacing assembly seat, the upper extreme of movable cylinder penetrates out button mouth and is connected with the button, movable seat buckle connection is in spacing assembly seat downside, the base is fixed in install the cavity downside, movable seat is in active cooperation in the base, be equipped with return spring between movable seat lower end surface and the base, movable seat upper movable setting has dynamic contact piece, be equipped with static contact piece on the base, static contact piece extends to dynamic contact piece top and is fixed with static contact point, dynamic contact piece corresponds in static contact point downside fixed connection to have dynamic contact point, be equipped with the compression spring between dynamic contact piece downside and movable seat, the utility model discloses under the guarantee its electrical performance and mechanical stability prerequisite, still can be convenient for assembly.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to an emergency stop switch. Background Technology

[0002] An emergency stop switch is an important safety device that quickly cuts off the power supply or control system of equipment in emergency situations. It is widely used in industrial machinery, automation equipment, power tools, and other fields. Its core function is to quickly trigger the circuit breaking mechanism when operators detect abnormal conditions, thereby ensuring the safety of equipment and personnel.

[0003] Traditional emergency stop switches typically consist of a housing, button, moving contact assembly, reset mechanism, and stationary contact. In practical applications, the structural design of these emergency stop switches often involves many components, making assembly cumbersome and requiring various equipment. Furthermore, existing emergency stop switches are prone to poor contact during long-term use, affecting the circuit's conductivity.

[0004] Therefore, there is an urgent need for a new type of emergency stop switch that can be easily assembled while ensuring its electrical performance and mechanical stability. Utility Model Content

[0005] This invention proposes an emergency stop switch with a stable structure and easy assembly, which solves the above-mentioned problems existing in the use of the prior art.

[0006] The technical solution of this utility model is implemented as follows: An emergency stop switch includes a switch housing. The switch housing has a downward-facing mounting cavity and a button port extending upwards from the mounting cavity through the switch housing. The mounting cavity contains a base, a movable seat, and a limiting assembly seat. A movable column is movably disposed within the button port. The lower end of the movable column is detachably connected to the limiting assembly seat, and the upper end of the movable column extends through the button port and is connected to a button. The movable seat is snap-fitted to the lower side of the limiting assembly seat. The base is fixed to the switch housing and seals the lower opening of the mounting cavity. The movable seat is movably fitted onto the base. A return spring is provided between the lower end face of the movable seat and the base. A movable contact piece is movably disposed on the movable seat. A stationary contact piece is disposed on the base. The stationary contact piece extends above the movable contact piece and is fixedly attached to a stationary contact point. A movable contact point is fixedly connected to the lower side of the stationary contact point on the movable contact piece. A compression spring is provided between the lower side of the movable contact piece and the movable seat. The compression spring is used to push the movable contact piece upwards so that the movable contact point abuts against the stationary contact point.

[0007] Preferably, the limiting assembly seat is movably fitted within the mounting cavity, and the limiting assembly seat cannot pass upward through the button opening.

[0008] Preferably, the limiting assembly seat has a through-hole in the middle, the lower end of the movable column passes through the through-hole and is fixedly connected to a limiting plate located on the lower side of the limiting assembly seat by screws, and the movable column is provided with an upper limit step located on the upper side of the through-hole.

[0009] Preferably, the left and right sides of the limiting assembly seat are provided with downwardly extending buckle connecting blocks, the inner side of the buckle connecting block is provided with a buckle groove, and the upper side of the movable seat is integrally formed with a buckle for engaging in the buckle groove.

[0010] Preferably, the inner wall of the mounting cavity is fixedly connected with movable rails located on both sides of the snap-fit ​​connecting block, and the snap-fit ​​connecting block can only slide up and down between the movable rails.

[0011] Preferably, the base has a movable groove for the movable seat to move and cooperate, and the base also has limit grooves on both sides of the movable groove. The movable seat has a sliding plate integrally formed in the limit groove.

[0012] Preferably, the movable seat has a movable contact opening for the movable contact to move and engage. The movable seat has an integrally formed abutment protruding towards the movable contact on the upper side of the movable contact opening. When the movable contact abuts against the stationary contact, there is a gap between the abutment and the movable contact. The upper side of the movable contact has a positioning groove corresponding to the abutment.

[0013] Preferably, the base has a stationary contact mounting opening, the upper side of the stationary contact mounting opening penetrates into the movable groove, and the base forms a vertical limit on the upper side of the stationary contact located in the stationary contact mounting opening.

[0014] Preferably, the upper side of the outer wall of the switch housing is provided with an upper abutment, and a threaded sleeve located below the upper abutment is threadedly connected to the outer wall of the switch housing, and a pad is provided on the upper side of the threaded sleeve.

[0015] Preferably, the button is threaded onto the upper end of the movable column.

[0016] In summary, the beneficial effects of this utility model are as follows:

[0017] 1. This structure, through the rational layout of various functional components (such as the base, movable seat, limit assembly seat, movable column, button, return spring, moving / stationary contacts, and clamping spring), achieves a compact overall structure, easy assembly, and stable electrical connection for the emergency stop switch. The modular design of each component facilitates assembly and maintenance; the snap-fit ​​connection and detachable structure facilitate assembly; simultaneously, the clamping spring ensures stable contact pressure between the moving and stationary contacts, improving electrical performance and service life. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is an exploded view of the structure of this utility model;

[0021] Figure 3 for Figure 2 A schematic diagram of the structure when observed from another angle;

[0022] Figure 4 This is a cross-sectional structural diagram of the present invention;

[0023] Figure 5 This is a schematic diagram of the present invention without the button, upper abutment, threaded sleeve, and pad.

[0024] Figure 6 For the present utility model in Figure 5 Based on the structural diagram of the switch housing, the following diagram is then removed;

[0025] Figure 7 for Figure 6 A schematic diagram of the structure when observed from another angle;

[0026] Figure 8 For the present utility model in Figure 5 Based on the structural diagram of the base section, the following diagram is then removed;

[0027] Figure 9 This is a schematic diagram of the movable seat part in this utility model.

[0028] In the diagram: 1. Switch housing; 11. Mounting cavity; 12. Button port; 13. Movable track; 14. Second latch; 2. Base; 21. Movable groove; 22. Limiting groove; 23. Stationary contact mounting port; 24. Second latch; 4. Movable seat; 41. Clamp; 42. Sliding plate; 43. Movable contact port; 44. Abutment; 5. Limiting assembly seat; 51. Through hole; 52. Clamp connecting block; 53. Clamp groove; 6. Movable column; 61. Upper limit step; 62. Screw; 63. Limiting plate; 7. Button; 81. Return spring; 82. Movable contact; 821. Movable contact; 822. Positioning groove; 83. Stationary contact; 831. Stationary contact; 84. Compression spring; 91. Upper abutment; 92. Threaded sleeve; 93. Pad. Detailed Implementation

[0029] The following will refer to the appendix in the embodiments of this utility model. Figure 1-9 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] Example:

[0031] like Figures 1 to 9 As shown, this utility model discloses an emergency stop switch, including a switch housing 1. A downward-opening mounting cavity 11 and a button port 12 extending upward from the mounting cavity 11 through the switch housing 1 are provided within the switch housing 1. Within the mounting cavity 11, from bottom to top, a base 2, a movable seat 4, and a limiting assembly seat 5 are sequentially arranged. A movable column 6 is movably disposed within the button port 12. The lower end of the movable column 6 is detachably connected to the limiting assembly seat 5, while the upper end of the movable column 6 extends through the button port 12 and is connected to a button 7. Furthermore, the movable seat 4 is snap-fitted to the lower side of the limiting assembly seat 5, and the base 2 is fixed to the switch housing 1 and aligns with the mounting cavity 1. The lower opening of cavity 11 is sealed. The movable seat 4 is movably fitted onto the base 2. A return spring 81 is provided between the lower end face of the movable seat 4 and the base 2. A movable contact piece 82 is movably mounted on the movable seat 4. A stationary contact piece 83 is provided on the base 2. The stationary contact piece 83 extends above the movable contact piece 82 and is fixed with a stationary contact point 831. The movable contact piece 82 is fixedly connected to the lower side of the stationary contact point 831 with a movable contact point 821. A compression spring 84 is provided between the lower side of the movable contact piece 82 and the movable seat 4. The compression spring 84 is used to push the movable contact piece 82 upward so that the movable contact point 821 abuts against the stationary contact point 831, thereby maintaining a good electrical connection.

[0032] Furthermore, the limiting assembly seat 5 is movably fitted within the mounting cavity 11, and the limiting assembly seat 5 cannot pass upward through the button opening 12, preventing the limiting assembly seat 5 from accidentally dislodging from the button opening 12 during operation. The detachable connection between the movable column 6 and the limiting assembly seat 5 is specifically as follows: a through-hole 51 is provided in the middle of the limiting assembly seat 5, and the lower end of the movable column 6 passes through the through-hole 51 and is fixedly connected to a limiting plate 63 located below the limiting assembly seat 5 by screws 62. The movable column 6 also has an upper limit step 61 located above the through-hole 51. Through the cooperation of the through-hole 51, the limiting plate 63, and the upper limit step 61, a stable connection between the movable column 6 and the limiting assembly seat 5 is achieved, effectively transmitting the pressing action while preventing detachment, thus improving structural strength and safety.

[0033] The specific structure of the movable seat 4 being snapped to the lower side of the limiting assembly seat 5 is as follows: both the left and right sides of the limiting assembly seat 5 are provided with downwardly extending snap-connecting blocks 52, and snap-connecting grooves 53 are opened inside the snap-connecting blocks 52. The upper side of the movable seat 4 is integrally formed with snaps 41 for snapping into the snap-connecting grooves 53. This snap-connecting structure allows the movable seat 4 to be quickly and securely connected to the lower side of the limiting assembly seat 5, simplifying the assembly steps, improving assembly efficiency, and preventing loosening or falling off, thereby improving the stability of the overall structure.

[0034] The base 2 is fixed on the switch housing 1. The specific structure is as follows: a second buckle 24 is integrally formed on the outer side wall of the base 2, and a second slot 14 is provided on the switch housing 1 for the second buckle 24 to be engaged.

[0035] Furthermore, in order to improve the stability of the limit assembly seat 5 when it moves up and down, the switch housing 1 is fixedly connected to the inner wall of the mounting cavity 11 with movable rails 13 located on both sides of the snap-fit ​​connecting block 52. The movable rails 13 guide and restrict the movement direction of the snap-fit ​​connecting block 52, ensuring that the snap-fit ​​connecting block 52 can only slide up and down between the movable rails 13, avoiding deviation or jamming, and improving the sensitivity and reliability of the switch action.

[0036] The specific structure of the movable seat 4 movably fitting on the base 2 is as follows: a movable groove 21 is provided in the base 2 for the movable seat 4 to move and fit within it. In addition, the base 2 also has limiting grooves 22 on both sides of the movable groove 21. A sliding plate 42 located in the limiting groove 22 is integrally formed on the movable seat 4. Through the cooperation between the sliding plate 42 and the limiting groove 22, the movement trajectory of the movable seat 4 is further constrained, ensuring that it runs smoothly in the vertical direction and enhancing the structural guidance.

[0037] The specific structure of the movable contact 82 being movably mounted on the movable seat 4 is as follows: a movable contact opening 43 is provided in the movable seat 4 for the movable contact 82 to move and cooperate. In addition, a stop post 44 protruding towards the movable contact 82 is integrally formed on the upper side of the movable contact opening 43 of the movable seat 4. When the movable contact 821 abuts against the stationary contact 831, there is a gap between the stop post 44 and the movable contact 82. This gap is between 0.3mm and 0.8mm. If the gap is too large, the response time is slow. If the gap is smaller, the movable contact 82 will react faster when it is pressed, but the manufacturing difficulty will also increase. It is also easy to accidentally disconnect the power. Therefore, it is sufficient to ensure an appropriate gap. In addition, a positioning groove 822 is provided on the upper side of the movable contact 82 corresponding to the stop post 44. In this way, when the stop post 44 drives the movable contact 82 downward, the downward movement of the movable contact 82 can be more stably guaranteed.

[0038] The specific structure of the stationary contact 83 mounted on the base 2 is as follows: a stationary contact mounting opening 23 is provided on the base 2, and the upper side of the stationary contact mounting opening 23 penetrates into the movable groove 21. The base 2 forms a vertical limit on the upper side of the stationary contact 83 located in the stationary contact mounting opening 23. This design facilitates the installation of the stationary contact 83 and keeps the stationary contact 83 in a stable position after installation, avoiding displacement due to external force or vibration, ensuring precise docking between the stationary contact 831 and the moving contact 821, and improving the reliability and safety of the electrical connection.

[0039] In this utility model, an upper abutment 91 is provided on the upper side of the outer side wall of the switch housing 1, and a threaded sleeve 92 located below the upper abutment 91 is threadedly connected to the outer side wall of the switch housing 1. A pad 93 is provided on the upper side of the threaded sleeve 92. Through the cooperation of the upper abutment 91, the threaded sleeve 92, and the pad 93, the emergency stop switch can be quickly installed and adjusted with external equipment, adapting to installation panels of different thicknesses and improving installation flexibility and adaptability.

[0040] Button 7 is threaded to the upper end of movable column 6. The threaded connection between button 7 and movable column 6 not only facilitates disassembly and replacement, but also ensures a firm connection that is not easily loosened, thereby improving the overall durability and ease of maintenance.

[0041] In actual use, when the operator presses button 7, the movable column 6 moves downward together with the limit assembly seat 5 and the movable seat 4, compressing the return spring 81, and at the same time moving the movable contact 82 downward, so that the movable contact 821 leaves the stationary contact 831, realizing the signal output of cutting off the power supply and completing the emergency stop function; the working principle of this emergency stop switch is common knowledge to those skilled in the art, and this application has not made any improvements in the working principle, so it will not be described in detail.

[0042] During assembly, the movable column 6 is inserted from top to bottom into the button port 12 of the switch housing 1. Then, the limiting assembly seat 5 is inserted upwards through the lower opening of the mounting cavity 11. Note that the two side snap-fit ​​connecting blocks 52 of the limiting assembly seat 5 must be aligned with the movable track 13 on the inner wall of the mounting cavity 11 to ensure that it can only slide up and down along the track. The movable column 6 passes through the through-hole 51 in the middle of the limiting assembly seat 5. Screws 62 are used below the limiting assembly seat 5 to fix the limiting plate 63 to the lower end of the movable column 6, thus achieving a stable connection between the limiting assembly seat 5 and the movable column 6. At this time, the limiting assembly seat 5 is clamped between the limiting step and the limiting plate 63.

[0043] Then, the movable contact 82 is placed into the movable contact opening 43 in the movable seat 4, and a compression spring 84 is placed between the movable contact 82 and the movable seat 4. The movable seat 4 with the movable contact 82 and compression spring 84 installed is placed on the base 2, and a return spring 81 is placed between the lower end face of the movable seat 4 and the base 2. The sliding plate 42 of the movable seat 4 must be accurately inserted into the limiting groove 22 of the base 2 to ensure that the movable seat 4 can only move in the vertical direction.

[0044] Insert the base 2 with the movable seat 4 into the mounting cavity 11 from bottom to top. The base 2 is engaged with the second slot 14 of the switch housing 1 by the second snap 41. At the same time, the snap 41 of the movable seat 4 is connected from bottom to top to the snap groove 53 of the snap connecting block 52 on the limiting assembly seat 5, ensuring a tight fit between the two. Finally, screw the button 7 onto the upper end of the movable column 6 by threaded connection.

[0045] It should also be noted that the terms used in this utility model, such as "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An emergency stop switch, comprising a switch housing, characterized in that: The switch housing has a downward-facing mounting cavity and a button opening extending upwards from the mounting cavity through the switch housing. The mounting cavity contains a base, a movable seat, and a limiting assembly seat. A movable column is movably mounted within the button opening. The lower end of the movable column is detachably connected to the limiting assembly seat, and the upper end of the movable column extends through the button opening and connects to a button. The movable seat is snap-fitted to the lower side of the limiting assembly seat. The base is fixed to the switch housing and seals the lower opening of the mounting cavity. The movable seat is movably fitted onto the base. A return spring is provided between the lower end face of the movable seat and the base. A movable contact is movably mounted on the movable seat. A stationary contact is provided on the base. The stationary contact extends above the movable contact and has a fixed stationary contact point. A movable contact point is fixedly connected to the lower side of the stationary contact point. A compression spring is provided between the lower side of the movable contact and the movable seat. The compression spring pushes the movable contact upwards, causing the movable contact point to abut against the stationary contact point.

2. An emergency stop switch according to claim 1, characterized in that: The limiting assembly seat is movably fitted inside the mounting cavity, and the limiting assembly seat cannot pass upward through the button opening.

3. An emergency stop switch according to claim 2, characterized in that: The limiting assembly seat has a through-hole in the middle. The lower end of the movable column passes through the through-hole and is fixedly connected to a limiting plate located on the lower side of the limiting assembly seat by screws. The movable column is provided with an upper limit step located on the upper side of the through-hole.

4. An emergency stop switch according to claim 2, characterized in that: Both sides of the limiting assembly seat are provided with downwardly extending buckle connecting blocks, and the buckle connecting blocks have buckle grooves on their inner sides. The upper side of the movable seat is integrally formed with buckles for engaging in the buckle grooves.

5. An emergency stop switch according to claim 4, characterized in that: The inner wall of the mounting cavity is fixedly connected with movable rails located on both sides of the snap-fit ​​connecting block, and the snap-fit ​​connecting block can only slide up and down between the movable rails.

6. An emergency stop switch according to claim 1, characterized in that: The base has a movable groove for the movable seat to move and cooperate. The base also has limit grooves on both sides of the movable groove. The movable seat has a sliding plate integrally formed in the limit groove.

7. An emergency stop switch according to claim 1, characterized in that: The movable seat has an opening for the movable contact piece to move and engage. The movable seat has an integrally formed abutment protruding towards the movable contact piece on the upper side of the movable contact piece opening. When the movable contact point abuts against the stationary contact point, there is a gap between the abutment and the movable contact piece. The upper side of the movable contact piece has a positioning groove corresponding to the abutment.

8. An emergency stop switch according to claim 1, characterized in that: The base has a stationary contact mounting opening, and the upper side of the stationary contact mounting opening penetrates into the movable groove. The base forms a vertical limit on the upper side of the stationary contact located in the stationary contact mounting opening.

9. An emergency stop switch according to claim 1, characterized in that: The upper side of the outer wall of the switch housing is provided with an upper abutment, and a threaded sleeve located below the upper abutment is threadedly connected to the outer wall of the switch housing. A pad is provided on the upper side of the threaded sleeve.

10. An emergency stop switch according to claim 1, characterized in that: The button is threadedly connected to the upper end of the movable column.

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