Structural interlock and power supply with structural interlock

Abstract

The utility model discloses a structure interlock device and power supply with structure interlock device, including movable plate, guide portion, fixed casing and elastomer, the guide portion is fixed in fixed casing, movable plate with guide portion can slide connection, the elastomer is arranged between fixed casing and movable plate, the fixed setting of movable plate has the positioning pin, the fixed casing is provided with the power output end of the movable plate, power output end and cable separable connection, when cable is connected with power output end, and cable pressure unites movable plate moves to fixed casing and drives the positioning pin to write the travel switch, when cable separates with power output end, movable plate resets under the action of elastomer and drives the positioning pin to write the travel switch away. The utility model movable plate writes the travel switch through the mode of moving, does not need to process the inclined plane structure, reduces the processing complexity.

Description

Technical Field

[0001] This utility model relates to the field of power supply structure technology, specifically providing a structural interlocking device and a power supply with a structural interlocking device. Background Technology

[0002] Existing power supplies typically have a limit switch at the power output terminal. This limit switch closes the power circuit when a cable is inserted into the power output port, or disconnects the power circuit when the cable is removed from the power output port. Limit switches are often used in conjunction with structural interlocking mechanisms. When a cable is connected to the power output port, the structural interlocking mechanism abuts against the spring or contact of the limit switch, thus closing the power circuit; when the cable is removed from the power output port, the structural interlocking mechanism disengages from the limit switch, thus disconnecting the power circuit.

[0003] Common structural interlocking components in existing technologies typically employ bent springs, such as... Figure 4 As shown, the power supply includes a power output terminal, a limit switch, and a housing. The right end of the spring contact is fixedly connected to the housing, and the spring contact extends to the left with a beveled surface to separate the left side of the spring contact from the housing. During cable connection, the cable presses the left side of the spring contact together, bringing the spring contact closer to the housing, and causing the fixing pin on the left side of the spring contact to contact the limit switch, thereby achieving structural interlocking. In this technical solution, the bent spring contact, due to its beveled surface, is difficult to control in terms of size during processing, making the processing relatively complex; at the same time, substandard dimensional accuracy may affect the stability of the structure during use. Utility Model Content

[0004] This utility model provides a structural interlocking device to solve the problems of difficult-to-control machining dimensions and low structural stability in existing structural interlocking components. The technical solution of this utility model is as follows:

[0005] A structural interlocking device for triggering / resetting a limit switch includes a movable plate, a guide portion, a fixed housing, and an elastic body. The guide portion is fixed to the fixed housing, the movable plate is slidably connected to the guide portion, the elastic body is disposed between the fixed housing and the movable plate, a positioning pin is fixedly disposed on the movable plate, and the fixed housing has a power output terminal penetrating the movable plate. The power output terminal is detachably connected to a cable. When the cable is connected to the power output terminal, the cable presses the movable plate toward the fixed housing and drives the positioning pin to trigger the limit switch. When the cable is separated from the power output terminal, the movable plate resets under the action of the elastic body and drives the positioning pin away from the limit switch.

[0006] In this design, when the cable is connected to the power output terminal, the cable end is plugged into the power output terminal. The cable end has a connector or similar structure adapted to the power output terminal. During the connection process, a movable plate is pushed, causing it to move closer to the fixed housing. A locating pin on the movable plate triggers a limit switch. As the movable plate moves towards the fixed housing, the locating pin moves with it, triggering the limit switch. When the cable is disconnected from the power output terminal, an elastic body applies a spring force to the movable plate, causing it to move away from the fixed housing, thus disengaging the locating pin from the limit switch and resetting it. The movable plate moves by the cable or an elastic body to change the state of the limit switch, eliminating the need for machining inclined surfaces or other structures, effectively reducing manufacturing complexity.

[0007] Furthermore, during the connection and disconnection of the cable from the power output terminal, the movable plate is displaced by the cable or elastic body, thereby changing the state of the limit switch. No separate operation is required to change the state of the limit switch, which has the advantage of simple operation.

[0008] Preferably, the structural interlocking component includes at least two guide parts, each guide part is installed on the fixed housing, and the movable plate is slidably connected to each guide part.

[0009] In this design, at least two guide sections are provided to make the movement of the movable plate more stable and to prevent the movable plate from being stuck due to force deviation.

[0010] Preferably, the guide part is a guide rod, and the movable plate is provided with a sliding hole adapted to the guide rod, and the movable plate is sleeved on the guide rod through the sliding hole.

[0011] In this design, the movable plate and the guide rod slide together through a sliding hole, resulting in a simple structure that is easy to assemble and helps control costs.

[0012] Preferably, the elastic body is a helical spring, and the helical spring is sleeved on the guide rod.

[0013] In this design, the helical spring works in conjunction with the guide rod, which can position the helical spring to ensure that the direction and magnitude of the elastic force exerted by the helical spring on the movable plate are stable.

[0014] Preferably, a limiting structure is provided at the end of the guide rod away from the fixed housing, the limiting structure being used to prevent the movable plate from detaching from the guide rod.

[0015] In this design, the limiting structure prevents the movable plate from detaching from the guide rod, ensuring that the helical spring always provides a certain elastic force to the movable plate, thus guaranteeing that the helical spring can push the movable plate to the end position of the guide rod. When the cable end is not connected to the power output end, it ensures that the movable plate will not contact the limit switch.

[0016] Preferably, the guide rod is a screw, and the limiting structure is the screw nut.

[0017] In this design, the screw shank acts as a guide, while the nut acts as a limit. During installation, simply install the screw onto the fixed housing.

[0018] Preferably, the limiting structure is a screw, the guide rod is provided with a threaded hole, the screw is connected to the threaded hole, and the diameter of the screw nut is larger than the diameter of the guide rod.

[0019] In this solution, screws are used to connect the guide rod, and nuts are used to limit the movement of the movable plate. Screws are common parts on the market, and are inexpensive and easy to promote.

[0020] Preferably, to solve the problem of complicated installation operations caused by the need to install the guide rod and the limiting structure separately, the guide rod is provided with an axial fixing hole, the limiting structure is a screw, the fixing housing is provided with a threaded hole adapted to the screw, and the screw is connected to the threaded hole.

[0021] In this solution, installation only requires passing the screw through the fixing hole of the guide rod and then connecting the screw to the fixing housing. This only requires one installation operation, which can reduce the number of installation steps and improve installation efficiency.

[0022] Preferably, the structural interlocking component includes at least two elastic bodies, each elastic body being disposed around the power output terminal.

[0023] In this solution, at least two elastic bodies are provided to provide a more uniform force to the movable plate, preventing uneven force distribution and tilting, and preventing the movable plate from becoming stuck due to tilting.

[0024] This utility model also provides a power supply with a structural interlocking device, the power supply including the above-mentioned structural interlocking device, the fixed housing being the outer shell of the power supply; or, the fixed housing being a detachable plate-like structure, the fixed housing being connected to the outer shell of the power supply.

[0025] In this solution, the aforementioned structural interlocking component automatically triggers the limit switch when the cable is plugged into the power output terminal and automatically disconnects the limit switch when the cable is disconnected. Furthermore, the structural interlocking component does not have complex curved or inclined surfaces, resulting in low manufacturing costs and ease of adoption.

[0026] The choice of mounting housing depends on its dimensions. If the power supply housing is existing technology and already standardized, a plate-like structure can be used as the mounting housing. During installation, the plate-like structure can be directly installed onto the power supply housing. Using a single plate-like structure also has the advantage that structural interlocking components can be connected to the power supply housing after assembly, eliminating the need for individual installation on the housing and improving assembly efficiency. For new power supply housing designs, the existing housing can be used directly as the mounting housing.

[0027] The beneficial effects of this utility model are:

[0028] This invention utilizes the cooperation of a guide section and an elastic body to enable the cable to push a movable plate, triggering a limit switch. After the cable is disconnected from the power output terminal, the elastic body pushes the movable plate to move, thus disconnecting the limit switch. This achieves automatic triggering or disconnection of the limit switch upon cable insertion or removal, with the movable plate triggering the limit switch through movement. Replacing the bent spring sheet in existing technology with a movable plate reduces the difficulty of dimensional control during processing. The sliding connection between the movable plate and the conductor section, along with the elastic body between the movable plate and the fixed plate, utilizes the elastic body to reset the interlocking structure, improving the overall stability of the structure. Furthermore, it eliminates the need for machining inclined surfaces, reducing processing costs. Attached Figure Description

[0029] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description of the embodiments 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.

[0030] Figure 1 This is a schematic diagram of the structure of this utility model;

[0031] Figure 2 The locations of the cable, limit switch, and structural interlocking components of this utility model are shown.

[0032] Figure 3 This is a schematic diagram of the structure of this utility model installed in a power supply;

[0033] Figure 4 This is a schematic diagram of a structural interlocking component in the prior art.

[0034] In the above figures, the corresponding reference numerals are as follows:

[0035] 1. Structural interlocking components; 2. Power output terminal; 3. Limit switch; 4. Housing; 5. Fixed housing; 6. Mounting hole; 7. Limiting structure; 8. Movable plate; 9. Through hole; 10. Power hole; 11. Guide part; 12. Positioning pin; 13. Elastomer; 14. Cable. Detailed Implementation

[0036] The technical solution of this utility model will be clearly and completely described in conjunction with the accompanying drawings and through specific embodiments.

[0037] Example 1:

[0038] like Figure 1 and Figure 2 As shown, this embodiment provides a structural interlocking device for installation on a power supply to trigger / reset the limit switch 3 on the power supply. It includes a movable plate 8, a guide portion 11, and a helical spring. One end of the guide portion 11 is fixed to a fixed housing 5. The movable plate 8 has a sliding hole and is slidably connected to the guide portion 11 through the sliding hole. The guide portion includes a rod-shaped guide rod. The axis of the guide rod is approximately perpendicular to the surface of the connection point with the fixed housing 5. The guide rod constrains the sliding direction of the movable plate 8, making the sliding direction of the movable plate 8 approximately perpendicular to the fixed housing 5. The helical spring is sleeved on the guide rod, with one end abutting against the fixed housing 5 and the other end abutting against the movable plate 8. It provides a force to the movable plate 8 away from the fixed housing 5. A limiting structure 7 is provided at the end of the guide rod away from the fixed housing 5 to prevent the movable plate 8 from falling off. When the movable plate 8 abuts against the limiting structure 7, the helical spring is still compressed, providing a force to the movable plate 8 away from the fixed housing 5. The fixed housing 5 is also provided with a power output terminal 2, and the movable plate 8 is provided with a through hole 9 for the power output terminal 2 to pass through. The power output terminal 2 passes through the movable plate 8.

[0039] The cable 14 is connected to the power output terminal 2 via a plug-in connection. The end of the cable 14 is equipped with a connector adapted to the power output terminal 2. During the plug-in process, the cable 14 pushes the movable plate 8 closer to the fixed housing 5. The movable plate 8 is equipped with a positioning pin 12, the position of which corresponds to the position of the limit switch 3. As the positioning pin 12 follows the movable plate 8 closer to the fixed housing 5, the limit switch 3 is located on the side of the fixed housing 5, causing the positioning pin 12 to gradually approach and trigger the limit switch 3. When the cable 14 and the power output terminal 2 are in the connected position, the limit switch 3 is in a state of circuit connection under the action of the positioning pin 12. It should be noted that when the cable 14 and the power output terminal 2 are connected, the frictional force between the cable 14 and the power output terminal 2 is much greater than the force exerted by the coil spring on the movable plate 8, preventing the coil spring from causing the cable 14 to separate from the power output terminal 2. When it is necessary to disconnect cable 14 from power output terminal 2, simply unplug cable 14. As cable 14 is pulled out, the helical spring applies force to the movable plate 8, causing it to move away from the fixed housing 5. After cable 14 is disconnected from power output terminal 2, the movable plate 8 moves to the position of the limiting structure 7 under the force of the helical spring. The positioning pin 12 moves with the movable plate 8, separating from the limit switch 3, and the limit switch 3 resets. At this point, the limit switch 3 is in the open circuit state. It should be noted that the open and closed circuit states of the limit switch 3 refer to the connected and disconnected states of the circuit in which the limit switch 3 is located.

[0040] Since the structural interlock component 1 of this application is used to be installed to a power supply, the fixed housing 5 can be part of the structural interlock component 1, or the fixed housing 5 can be the side, bottom or top surface of the power supply housing that is connected to the structural interlock component 1.

[0041] When the fixed housing 5 is not one side of the power supply housing, the fixed housing 5 can be a plate-like structure, such as a rectangular plate or a circular plate. In this case, the power output terminal 2 on the power supply also needs to pass through the fixed housing 5, so the fixed housing 5 is also provided with a power hole 10 for the power output terminal 2 to pass through, so that the power output terminal 2 can pass through the fixed housing 5.

[0042] The guide rod can be connected to the fixed housing 5 by means of riveting, threaded connection, or welding. For example, in a threaded connection, one end of the guide rod can be provided with an external thread, the fixed housing 5 can be provided with a threaded hole, and the guide rod can be connected to the threaded hole of the fixed housing 5 through the thread.

[0043] The limiting structure 7 on the guide rod can be a nut or a screw. For example, the guide rod is a double-ended stud structure, with one end of the guide rod connected to the fixed housing 5 by a thread. After the movable plate 8 slides onto the guide rod, a nut is connected to the end of the guide rod away from the fixed housing 5. The outer diameter of the nut is larger than the diameter of the sliding hole, which can prevent the movable plate 8 from detaching. Similarly, a threaded hole can be provided at the end of the guide rod away from the fixed housing 5, and then a screw can be connected to the threaded hole. The diameter of the screw nut is larger than the diameter of the sliding hole, which can also prevent the movable plate 8 from detaching.

[0044] In a more preferred embodiment, the guide rod is a single screw, and the limiting structure is the nut of that screw. Guiding and limiting functions can be achieved with a single screw, requiring fewer parts and offering the advantage of a simplified structure. Although the power output terminal 2 also passes through the through hole 9 of the movable plate 8 and can cooperate with the guide rod to prevent the movable plate 8 from rotating around the guide rod, the diameter of the through hole 9 is slightly larger than the diameter of the power output terminal 2, making the movement of the movable plate 8 unstable. Therefore, it is preferable to use two or more guide rods. For example, four guide rods can be provided along the outer side of the power output terminal 2, and four sliding holes can be provided on the movable plate 8, each slidingly connected to one of the four guide rods, providing the movable plate 8 with more support points and thus making the sliding of the movable plate 8 smoother.

[0045] With at least two guide rods, the number of helical springs can also be increased. Each helical spring applies force to different parts of the movable plate 8, making the force on the movable plate 8 more even and preventing uneven force and tilting. Tilt of the movable plate 8 can easily cause it to jam. Therefore, increasing the number of helical springs can make the force on the movable plate 8 more even and prevent it from jamming.

[0046] Each guide rod may be fitted with a helical spring, or some guide rods may not have helical springs fitted on them. The guide rods are arranged along the circumference of the power output terminal 2, therefore, the helical springs fitted on the guide rods are also distributed along the circumference of the power output terminal 2. The helical springs, as elastic bodies 13 that provide the restoring force for the movable plate 8, can be replaced by spring sheets.

[0047] As an optional implementation, the limit switch 3 can be located inside the fixed housing 5. The fixed housing 5 has a hole, the position of which corresponds to the position of the limit switch 3, allowing one end of the positioning pin 12 to pass through the hole and trigger the limit switch. When the cable 14 is connected to the power output terminal 2, and the cable 14 pushes the movable plate 8 towards the fixed housing 5, the positioning pin 12 moves with the movable plate 8, thus triggering the limit switch. When the cable 14 is removed, separating it from the power output terminal 2, the movable plate 8 moves away from the fixed housing 5 under the action of the elastic body 13, and the positioning pin 12 simultaneously moves away from the limit switch 3, resetting the limit switch 3. Located inside the fixed housing 5, the limit switch 3 is positioned inside the power supply, requiring the positioning pin 12 to pass through the fixed housing 5 to trigger it. This arrangement provides some protection for the limit switch 3, preventing accidental triggering due to contact with external objects.

[0048] Example 2:

[0049] This embodiment two provides a structural interlocking device. Unlike embodiment one, in this embodiment two, the guide rod is a hollow rod with an axial fixing hole, and is fixed to the fixed housing 5 by screws.

[0050] The fixing hole on the guide rod extends through both end faces of the guide rod. After the screw passes through the fixing hole, it connects to the threaded hole on the fixing housing 5. The helical spring is sleeved on the guide rod. The diameter of the screw nut is larger than the diameter of the sliding hole.

[0051] In this second embodiment, the guide rod does not need to be installed separately. The guide rod and the limiting structure 7 can be installed at once, reducing installation steps and improving installation efficiency.

[0052] Example 3:

[0053] This embodiment three provides a structural interlocking device, which differs from embodiment one in that the installation position of the helical spring is different.

[0054] A helical spring is fitted onto the power output terminal 2. One end of the helical spring abuts against the fixed housing 5, and the other end abuts against the movable plate 8, still providing a force to the movable plate 8 to move away from the fixed housing 5.

[0055] Example 4:

[0056] This embodiment four provides a structural interlocking device. Unlike embodiment one, one end of the helical spring is welded to the fixed housing 5, and the other end of the helical spring abuts against the movable plate 8.

[0057] A groove can also be provided on the movable plate 8, and the helical spring abuts against the bottom of the groove. The groove serves to position the helical spring and prevent it from tilting.

[0058] Example 5:

[0059] This fifth embodiment provides a power supply with a structural interlock device, including the structural interlock component 1 described in Embodiment 1, Embodiment 2, Embodiment 3, or Embodiment 4.

[0060] The power supply also includes a housing 4, a power output terminal 2, and a limit switch 3. Both the power output terminal 2 and the limit switch 3 are connected to the housing 4, with the limit switch 3 located on one side of the power output terminal 2.

[0061] The fixed housing 5 is a rectangular plate with mounting holes 6, a power supply hole 10, and a switch hole. The power supply housing 4 has threaded holes corresponding to the mounting holes 6, allowing the fixed housing 5 to be fixed to the power supply housing 4 with screws. The power supply hole 10 corresponds to the position of the power output terminal 2, allowing the power output terminal 2 to pass through the fixed housing 5. The switch hole corresponds to the position of the limit switch 3 on the power supply, allowing the limit switch 3 to pass through the switch hole. When the movable plate 8 moves towards the fixed housing 5, it pushes the limit switch 3 to move, thus connecting the circuit containing the limit switch 3.

[0062] Example 6:

[0063] This sixth embodiment provides a power supply with a structural interlock device, including the structural interlock component 1 described in Embodiment 1, Embodiment 2, Embodiment 3, or Embodiment 4.

[0064] like Figure 3 As shown, the fixed housing 5 is the outer shell 4 of the power supply. The power supply includes a power output terminal 2 and a limit switch 3. The power output terminal 2 is connected to the limit switch 3, and the limit switch 3 is located on one side of the power output terminal 2.

Claims

1. A structural interlocking device, characterized in that, The device includes a movable plate (8), a guide (11), a fixed housing (5), and an elastic body (13). The guide (11) is fixed to the fixed housing (5), and the movable plate (8) is slidably connected to the guide (11). The elastic body (13) is disposed between the fixed housing (5) and the movable plate (8). A positioning pin (12) is fixedly disposed on the movable plate (8), and the fixed housing (5) is provided with a power output terminal (2) that passes through the movable plate (8). The power output terminal (2) is detachably connected to a cable (14). When the cable (14) is connected to the power output terminal (2), the cable (14) presses the movable plate (8) toward the fixed housing (5) and drives the positioning pin (12) to trigger a limit switch. When the cable (14) is separated from the power output terminal (2), the movable plate (8) is reset under the action of the elastic body (13) and drives the positioning pin (12) away from the limit switch.

2. The structural interlocking device according to claim 1, characterized in that, It includes at least two guide parts (11), each guide part (11) is installed on the fixed housing (5), and the movable plate (8) is slidably connected to each guide part (11).

3. The structural interlocking device according to claim 1, characterized in that, The guide part (11) is a guide rod, and the movable plate (8) is provided with a sliding hole adapted to the guide rod. The movable plate (8) is sleeved on the guide rod through the sliding hole.

4. A structural interlocking device according to claim 3, characterized in that, The elastic body is a helical spring, and the helical spring is sleeved on the guide rod.

5. A structural interlocking device according to claim 3, characterized in that, The end of the guide rod away from the fixed housing (5) is provided with a limiting structure (7) for limiting the displacement of the movable plate.

6. A structural interlocking device according to claim 5, characterized in that, The guide rod is a screw, and the limiting structure is the screw nut.

7. A structural interlocking device according to claim 5, characterized in that, The limiting structure (7) is a screw, the guide rod is provided with a threaded hole, the screw is connected to the threaded hole, and the diameter of the screw nut is larger than the diameter of the guide rod.

8. A structural interlocking device according to claim 5, characterized in that, The guide rod is provided with an axial fixing hole, the limiting structure (7) is a screw, the fixing housing (5) is provided with a threaded hole adapted to the screw, and the screw is connected to the threaded hole.

9. A structural interlocking device according to claim 1, characterized in that, It includes at least two elastomers, with each elastomer disposed around the power output terminal (2) as the center.

10. A power supply with a structural interlocking device, characterized in that, Includes the structural interlocking device according to any one of claims 1-9, wherein the fixed housing (5) is the outer shell (4) of the power supply; or, The fixed housing (5) is a detachable plate structure, and the fixed housing (5) is connected to the outer shell (4) of the power supply.

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