Dual set emergency stop device

Abstract

The utility model discloses double sets of emergency stop device, including base, pressing mechanism, transmission mechanism, switch mechanism, the transmission mechanism includes the transmission fixed module of installation in the limiting step, installs transmission module in the installation cavity, the transmission module includes setting first transmission column on the installation cavity, is connected between first spring of first transmission column and switch mechanism, sets up second transmission column in the installation cavity, is connected between second spring of second transmission column and switch mechanism, double sets of emergency stop device of the utility model, adopts double transmission column, double spring's double sets structure, even if one of transmission assembly appears the trouble such as jam, fracture, another group still can promote switch mechanism action when pressing, avoids single component failure and leads to emergency stop function malfunction, and the security guarantee level is improved greatly.

Description

Technical Field

[0001] This utility model relates to the field of switching device technology, and in particular to a dual-group emergency stop device. Background Technology

[0002] Emergency stop devices, as core mandatory protection components of industrial safety systems, are directly related to personnel safety and equipment reliability in their design and performance. They must strictly adhere to the IEC 60947-5-5 standard, "Emergency Stop Devices," and the core principle of "Fail-Safe," ensuring that they can forcibly cut off hazardous sources and guide the system to a safe state in emergency situations. These devices are widely used in high-risk fields such as machinery manufacturing, automated production lines, and robotic workstations, serving as the last line of defense against collisions, loss of control, and other accidents. Most mainstream emergency stop devices currently employ a single-drive structure, meaning a single drive column and a single spring enable both triggering and resetting functions. The design prioritizes simplified components and cost control. Under normal conditions, the spring supports the drive column against the pressing mechanism, maintaining the initial circuit of the switching mechanism. Upon triggering, the pressing mechanism pushes the drive column to compress the spring, thereby opening the switch contacts and outputting an emergency stop signal. This type of structure is widely used in low-safety-level scenarios, such as the single-drive emergency stop solenoid valve design employed in some hydraulic control systems, which achieves basic shutdown functionality through a simplified circuit. Utility Model Content

[0003] Therefore, the purpose of this utility model is to provide a dual-group emergency stop device.

[0004] The present invention adopts the following technical solution: A dual-unit emergency stop device includes a base, a pressing mechanism, a transmission mechanism, and a switching mechanism. One end of the base has a mounting cavity, and the base includes a limiting step disposed within the mounting cavity. The pressing mechanism is mounted on one end of the base near the mounting cavity, and the switching mechanism is mounted on the other end of the base. The transmission mechanism includes a transmission fixing module mounted on the limiting step and a transmission module mounted within the mounting cavity. The transmission module includes a first transmission column disposed on the mounting cavity, a first spring connecting the first transmission column and the switching mechanism, a second transmission column disposed within the mounting cavity, and a second spring connecting the second transmission column and the switching mechanism. The free ends of the first and second transmission columns respectively abut against the pressing mechanism.

[0005] Furthermore, the switching mechanism includes a switch housing mounted on the base, a first switch, a second switch, and a switch partition mounted inside the switch housing; the switch partition is disposed on the switch housing between the first switch and the second switch, the first switch is disposed opposite to the first spring, and the second switch is disposed opposite to the second spring.

[0006] Furthermore, the dual-group emergency stop device also includes an external thread disposed on the base, a first sealing ring disposed on the external thread, and a fastener threadedly connected to the external thread.

[0007] Furthermore, the base is provided with a mounting slot, and the switching mechanism also includes a mounting buckle disposed on the switch housing; the mounting buckle cooperates with the mounting slot.

[0008] Furthermore, four limiting grooves are provided on the limiting step, and the transmission fixing module includes four conductive limiting rods that are engaged and installed on the limiting grooves, an external plug rod connected to the conductive limiting rod, and a first contact terminal provided on the external plug rod; a transmission channel is formed between adjacent external plug rods for the first transmission column and the second transmission column to move up and down.

[0009] Furthermore, the transmission fixing module also includes a first conductive plate disposed on the first transmission column, a second contact terminal disposed on the first conductive plate, a second conductive plate mounted on the second transmission column, and a third contact terminal disposed on the second conductive plate; the second contact terminal and the third contact terminal are respectively disposed opposite to the first contact terminal.

[0010] Furthermore, there are two second contact terminals, which are disposed at both ends of the first conductive plate; there are also two third contact terminals, which are respectively disposed at both ends of the second conductive plate; the first spring abuts against the first conductive plate, and the second spring abuts against the second conductive plate.

[0011] Furthermore, the first conductive plate is engaged with the first transmission column, and the second conductive plate is engaged with the second transmission column.

[0012] Furthermore, the pressing mechanism includes a pressing column installed in the mounting cavity, a pressing cover installed at one end of the pressing column, a transmission ring installed at the other end of the pressing column, and a connecting bolt for connecting the transmission ring to the pressing column; the transmission ring is installed in the mounting cavity.

[0013] Furthermore, the pressing mechanism also includes a second sealing ring disposed on the transmission ring and a third spring installed between the pressing cover and the limiting step.

[0014] The beneficial effects of this utility model are as follows: The dual-group emergency stop device involved in this utility model adopts a dual-group structure with dual transmission columns and dual springs. Even if one group of transmission components malfunctions such as jamming or breakage, the other group can still push the switch mechanism to operate when pressed, avoiding the failure of the emergency stop function due to the failure of a single component, and greatly improving the level of safety assurance. Attached Figure Description

[0015] Figure 1 This is a perspective view of a dual-group emergency stop device according to an embodiment of the present invention; Figure 2 for Figure 1 Exploded view of the dual-unit emergency stop device; Figure 3 for Figure 1 An exploded view of the dual emergency stop device from another angle; Figure 4 for Figure 1 A three-dimensional schematic diagram of the switching mechanism of the dual-group emergency stop device.

[0016] Reference numerals: 10, base; 11, mounting cavity; 12, limiting step; 13, external thread; 14, first sealing ring; 15, fastener; 16, mounting slot; 17, limiting groove; 20. Pressing mechanism; 21. Pressing column; 22. Pressing cover; 23. Transmission ring; 24. Connecting bolt; 25. Second sealing ring; 26. Third spring; 30. Transmission mechanism; 31. Transmission fixing module; 310. Conductive limiting rod; 311. External plug rod; 312. First contact terminal; 313. First conductive plate; 314. Second contact terminal; 315. Second conductive plate; 316. Third contact terminal; 32. Transmission module; 320. First transmission column; 321. First spring; 322. Second transmission column; 323. Second spring; 40. Switching mechanism; 41. Switch housing; 42. First switch; 43. Second switch; 44. Switch partition; 48. Mounting clip. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] In the description of this utility model, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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 limitations on this utility model. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] Please see Figures 1 to 4 This invention relates to a dual-group emergency stop device, comprising a base 10, a pressing mechanism 20, a transmission mechanism 30, and a switching mechanism 40. One end of the base has a mounting cavity 11, and the base 10 includes a limiting step 12 disposed within the mounting cavity 11. The pressing mechanism 20 is mounted on one end of the base 10 near the mounting cavity 11, and the switching mechanism 40 is mounted on the other end of the base 10. The transmission mechanism 30 includes a transmission fixing module 31 mounted on the limiting step 12 and a transmission module 32 mounted within the mounting cavity 11. The transmission module 32 includes a first transmission column 320 disposed on the mounting cavity 11, a first spring 321 connecting the first transmission column 320 and the switching mechanism 40, a second transmission column 322 disposed within the mounting cavity 11, and a second spring 323 connecting the second transmission column 322 and the switching mechanism 40. The free ends of the first transmission column 320 and the second transmission column 322 respectively abut against the pressing mechanism 20.

[0021] The working principle of the dual-group emergency stop device of this utility model is as follows: Under normal conditions, the first transmission column 320 and the second transmission column 322 of the transmission mechanism 30 are supported by the first spring 321 and the second spring 323, and their free ends are in contact with the pressing mechanism 20. At this time, the switching mechanism 40 is in its initial working state. The transmission fixing module 31 on the limiting step 12 plays a positioning constraint role on the transmission component, ensuring that its position is stable in the mounting cavity 11. When an emergency stop is required, the pressing mechanism 20 is pressed, and the pressure will act synchronously on the free ends of the two transmission columns, pushing them to move along the mounting cavity 11 toward the switching mechanism 40. At the same time, the corresponding springs are compressed. As the transmission columns move, their ends will trigger the switching mechanism 40, thus triggering the emergency stop signal.

[0022] Compared to existing technologies, the dual-group emergency stop device of this utility model adopts a dual-group structure with dual transmission columns and dual springs. Even if one group of transmission components malfunctions such as jamming or breakage, the other group can still push the switch mechanism 40 to operate when pressed, avoiding the failure of the emergency stop function due to the failure of a single component and greatly improving the safety level. The transmission fixing module 31 cooperates with the limiting step 12 to accurately position and constrain the dual transmission columns, reducing their shaking and displacement in the mounting cavity 11. At the same time, when pressed, the pressure is applied synchronously to the two groups of transmission columns, and the force is more balanced, which can ensure that the switch mechanism 40 is stably triggered and reduce the probability of false triggering or incomplete triggering.

[0023] Please refer to Figure 3 and Figure 4 The switching mechanism 40 includes a switch housing 41 mounted on the base 10, a first switch 42, a second switch 43, and a switch partition 44 installed within the switch housing 41. The switch partition 44 is disposed on the switch housing 41 between the first switch 42 and the second switch 43. The first switch 42 is disposed opposite to the first spring 321, and the second switch 43 is disposed opposite to the second spring 323. The first switch 42 and the second switch 43 are respectively disposed corresponding to the first spring 321 and the second spring 323, forming a set of transmission components matching one switch in a dual independent triggering circuit. When the pressing mechanism 20 pushes the transmission column, the two sets of components can drive the corresponding switches to operate. Even if one switch has a fault such as contact burning or poor contact, the other switch can still output an emergency stop signal normally, forming a double redundancy with the dual transmission structure, further meeting the requirements of medium and high safety levels. The switch partition 44 forms a physical barrier between the two switches, which can effectively avoid electrical interference or mechanical collision between the first switch 42 and the second switch 43. Especially in complex environments such as industrial dust and vibration, it can reduce the risk of switch mis-triggering or failure. At the same time, the partition, together with the switch housing 41, can accurately position the two switches, ensuring that their relative positions with the corresponding springs and transmission columns are stable, and improving the consistency of triggering actions.

[0024] Please refer to Figure 3 The dual-set emergency stop device also includes an external thread 13 on the base 10, a first sealing ring 14 on the external thread 13, and a fastener 15 threaded onto the external thread 13. Specifically, the fastener 15 is a nut. The external thread 13 of the base 10, in conjunction with the nut, can firmly fix the entire emergency stop device to the equipment panel, bracket, or other mounting carrier. After the nut is tightened, it can resist vibration and impact in the industrial environment, preventing the device from loosening or shifting. At the same time, by adjusting the position of the nut, the exposed length of the base 10 can be flexibly adjusted to adapt to mounting carriers of different thicknesses, improving installation adaptability.

[0025] Please refer to Figure 2 and Figure 3 The base 10 has a mounting slot 16, and the switch mechanism 40 also includes a mounting buckle 48 disposed on the switch housing 41; the mounting buckle 48 cooperates with the mounting slot 16. The buckle and slot engage to connect, eliminating the need for tools during installation. Simply align the switch mechanism 40 and push it to allow the buckle to spring into the slot for secure fixing. This significantly shortens assembly time compared to purely threaded connections, making it particularly suitable for mass production. The mounting slot 16 provides a clear assembly reference for the switch mechanism 40, and the buckle's engagement restricts its position, ensuring that the first switch and second switch 43 within the switch housing 41 are precisely aligned with their corresponding transmission pins and springs, preventing installation deviations from affecting trigger reliability.

[0026] Four limiting grooves 17 are provided on the limiting step 12. The transmission fixing module 31 includes four conductive limiting rods 310 that are engaged and installed on the limiting grooves 17, an external plug rod 311 connected to the conductive limiting rods 310, and a first contact terminal 312 set on the external plug rod 311. A transmission channel is formed between adjacent external plug rods for the first transmission column and the second transmission column to move up and down. After the four conductive limiting rods 310 are engaged in the limiting grooves 17, a regular transmission channel is formed between adjacent rods, which can strictly limit the lateral movement of the first transmission column and the second transmission column 322. When the transmission column is pressed and moved, the channel can prevent it from deviating, shaking or jamming, ensuring that the two always move along the preset trajectory towards the switching mechanism 40, accurately triggering the corresponding switch, solving the problem of trigger failure caused by deviation in a single transmission. The conductive limiting rods 310 have the dual functions of mechanical limiting and conductive detection. Together with the external plug rods 311 and the first contact terminal 312, a transmission status monitoring circuit can be constructed. For example, when the transmission column moves normally, the position signal can be fed back through its contact / separation status with the external plug rod, so as to realize real-time monitoring of whether the transmission component is stuck and whether the action is in place, thereby further improving the safety and controllability of the device.

[0027] The transmission fixing module 31 also includes a first conductive plate 313 disposed on the first transmission column 320, a second contact terminal 314 disposed on the first conductive plate 313, a second conductive plate 315 mounted on the second transmission column 322, and a third contact terminal 316 disposed on the second conductive plate 315; the second contact terminal 314 and the third contact terminal 316 are respectively disposed opposite to the first contact terminal 312. The first conductive plate and the second conductive plate 315 move synchronously with the corresponding transmission column. When the transmission column is pressed, the second and third contact terminals 316 will move closer and contact the first contact terminal 312, forming an electrical signal path. By monitoring the on / off state of the two contact terminals, it is possible to determine in real time whether both sets of transmission columns are operating normally, solving the problem that the effectiveness of internal transmission cannot be intuitively confirmed by mechanical structure alone; if a set of transmission components fails, the corresponding contact terminal will not be able to conduct with the first contact terminal 312, and the problem of which set of transmission mechanism 30 has a problem can be quickly located by the difference in electrical signals, and it is possible to distinguish whether the fault comes from the transmission end or the switching end without disassembling the device, which greatly improves maintenance efficiency.

[0028] There are two second contact terminals 314, located at both ends of the first conductive plate 313; there are two third contact terminals 316, located at both ends of the second conductive plate 315. A first spring 321 abuts against the first conductive plate 313, and a second spring 323 abuts against the second conductive plate 315. The two second contact terminals 314 and the two third contact terminals 316 form a multi-point corresponding contact structure. Even if the conductive plate tilts slightly due to installation deviation or long-term use, at least one terminal can effectively contact the first contact terminal 312, avoiding interruption of the monitoring signal due to poor single-point contact and ensuring the continuity of transmission status feedback. The first spring 321 directly abuts against the first conductive plate 313, and the second spring 323 directly abuts against the second conductive plate 315, ensuring that the spring force is evenly distributed across the entire conductive plate, rather than being applied at a single point. This reduces the skewing or jamming of the transmission column during movement, ensuring that the conductive plate moves smoothly and synchronously with the transmission column, thus guaranteeing both the accuracy of mechanical transmission and maintaining the relative stability of the contact terminals.

[0029] The first conductive plate 313 is engaged with the first transmission column 320, and the second conductive plate 315 is engaged with the second transmission column 322. This engagement connection eliminates the need for bolts, welding, or other auxiliary fixing methods; assembly is completed simply by aligning the conductive plate with the engagement position on the transmission column and pressing it down. The operation is simple and tool-free, significantly reducing assembly time, making it particularly suitable for industrial mass production scenarios. The engagement structure ensures a tight fixation between the conductive plate and the transmission column, preventing relative slippage or loosening during the reciprocating movement of the transmission column. It also ensures that the contact terminals on the conductive plate always move synchronously with the transmission column, precisely aligning with the first contact terminal 312, guaranteeing stable transmission of status monitoring signals and preventing monitoring failures due to loose connections.

[0030] The pressing mechanism 20 includes a pressing column 21 installed in the mounting cavity 11, a pressing cover 22 installed at one end of the pressing column 21, a transmission ring 23 installed at the other end of the pressing column 21, and a connecting bolt 24 for connecting the transmission ring 23 to the pressing column 21. The transmission ring 23 is installed in the mounting cavity 11. As an intermediate connecting component, the transmission ring 23 can evenly distribute the axial force of the pressing column 21 to the free ends of the first transmission column and the second transmission column 322, ensuring that the two sets of transmission components are subjected to consistent force and move synchronously when pressing, avoiding transmission deviation caused by uneven force on one side, and enhancing the redundancy and reliability of the dual-set structure. The pressing cover 22 increases the contact area of ​​the hand, allowing for rapid application of force in emergencies. The pressing column 21, as the main force transmission component, works with the transmission ring 23 in the mounting cavity 11 to limit the pressing action and ensure stable axial movement, preventing tilting or jamming during pressing, and ensuring smooth emergency stop triggering.

[0031] The pressing mechanism 20 also includes a second sealing ring 25 disposed on the transmission ring 23 and a third spring 26 installed between the pressing cover 22 and the limiting step 12. The second sealing ring 25 is disposed on the transmission ring 23 and can fit tightly against the inner wall of the mounting cavity 11 to form an annular sealing barrier. This can effectively prevent external dust, water vapor, oil and other pollutants from entering the device through the gap between the pressing mechanism 20 and the mounting cavity 11, and prevent core components such as the transmission column, spring and conductive terminals from jamming, rusting or poor contact due to impurities. Together with the first sealing ring 14 of the switching mechanism 40, it forms a double seal, which greatly improves the durability of the device in harsh industrial environments.

[0032] The above description merely illustrates the preferred technical solution of this utility model, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A dual-group emergency stop device, characterized in that, The system includes a base, a pressing mechanism, a transmission mechanism, and a switching mechanism. One end of the base has a mounting cavity, and the base includes a limiting step disposed within the mounting cavity. The pressing mechanism is mounted on one end of the base near the mounting cavity, and the switching mechanism is mounted on the other end of the base. The transmission mechanism includes a transmission fixing module mounted on the limiting step and a transmission module mounted within the mounting cavity. The transmission module includes a first transmission column disposed on the mounting cavity, a first spring connecting the first transmission column and the switching mechanism, a second transmission column disposed within the mounting cavity, and a second spring connecting the second transmission column and the switching mechanism. The free ends of the first and second transmission columns respectively abut against the pressing mechanism.

2. The dual-group emergency stop device according to claim 1, characterized in that, The switching mechanism includes a switch housing mounted on the base, a first switch, a second switch, and a switch partition mounted inside the switch housing; the switch partition is disposed on the switch housing between the first switch and the second switch, the first switch is disposed opposite to the first spring, and the second switch is disposed opposite to the second spring.

3. The dual-group emergency stop device according to claim 2, characterized in that, The dual-group emergency stop device also includes an external thread disposed on the base, a first sealing ring disposed on the external thread, and a fastener threadedly connected to the external thread.

4. The dual-group emergency stop device according to claim 2, characterized in that, The base is provided with a mounting slot, and the switch mechanism also includes a mounting buckle disposed on the switch housing; the mounting buckle cooperates with the mounting slot.

5. The dual-group emergency stop device according to claim 1, characterized in that, The limiting step has four limiting grooves. The transmission fixing module includes four conductive limiting rods that are engaged and installed on the limiting grooves, an external plug rod connected to the conductive limiting rod, and a first contact terminal set on the external plug rod. A transmission channel is formed between adjacent external plug rods for the first transmission column and the second transmission column to move up and down.

6. The dual-group emergency stop device according to claim 5, characterized in that, The transmission fixing module further includes a first conductive plate disposed on the first transmission column, a second contact terminal disposed on the first conductive plate, a second conductive plate mounted on the second transmission column, and a third contact terminal disposed on the second conductive plate; the second contact terminal and the third contact terminal are respectively disposed opposite to the first contact terminal.

7. The dual-group emergency stop device according to claim 6, characterized in that, There are two second contact terminals, which are disposed at both ends of the first conductive plate; there are two third contact terminals, which are respectively disposed at both ends of the second conductive plate; the first spring abuts against the first conductive plate, and the second spring abuts against the second conductive plate.

8. The dual-group emergency stop device according to claim 6, characterized in that, The first conductive plate is engaged with the first transmission column, and the second conductive plate is engaged with the second transmission column.

9. The dual-group emergency stop device according to claim 1, characterized in that, The pressing mechanism includes a pressing column installed in the mounting cavity, a pressing cover installed at one end of the pressing column, a transmission ring installed at the other end of the pressing column, and a connecting bolt for connecting the transmission ring to the pressing column; the transmission ring is installed in the mounting cavity.

10. The dual-group emergency stop device according to claim 9, characterized in that, The pressing mechanism also includes a second sealing ring disposed on the transmission ring and a third spring installed between the pressing cover and the limiting step.

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