Guide rail meter

Abstract

A guide rail meter comprises a bottom shell and an electric meter element arranged in the bottom shell. The bottom shell comprises side plates and a bottom plate connected with the side plates; the side plates are provided with extension plates which horizontally extend inwards; the extension plate is connected with a vertical electrostatic baffle plate; the two electrostatic baffles are oppositely arranged; the guide rail meter further comprises a middle coaming arranged between the two electrostatic baffles. An accommodating cavity is defined by the electrostatic baffle and the middle coaming; the accommodating cavity is used for accommodating an electric meter element sensitive to static electricity. The static electricity protection device can ensure that static electricity near the side plate of the guide rail meter bottom shell is correctly guided and dissipated, and the power panel and other sensitive ammeter elements are not damaged by the static electricity, so that the static electricity protection capability of equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of guide rail gauge technology, and in particular to a guide rail gauge. Background Technology

[0002] A rail meter is an electrical energy measuring instrument mounted on a DIN rail, specifically designed to measure parameters such as voltage, current, power, and energy in DC systems. It typically features high accuracy and stability, supports remote monitoring and data exchange, and is widely used in telecommunications base stations, new energy systems (such as solar photovoltaic), electric vehicle charging stations, industrial automation, and building automation, providing technical support for the monitoring and management of DC power systems. The "DIN rail" in a rail meter refers to a standardized mounting structure, commonly used for the installation and fixation of electrical equipment.

[0003] Electrostatic discharge (ESD) is a common natural phenomenon that can occur on the surface of objects or between objects due to friction, contact, and separation. In the electronics industry, ESD can cause sudden or potential failures of electronic components, thereby affecting overall system performance and causing serious losses.

[0004] The existing patent with application number 202021540026.2 discloses a guide rail meter, including a bottom shell, a power board and an outer shell. The power board is disposed above the current copper strip and has a relay. The relay is located in the middle of the current copper strip which is arranged in a U shape. The two ends of the power board are provided with wiring terminals. Other internal components are placed above the power board. The power board and other internal components are in contact with the edge of the bottom shell side plate.

[0005] The guide rail meter in this patent document has anti-static terminal blocks at both ends of the power board, so there's no need to consider electrostatic protection for the side panels of the bottom case corresponding to the power board's ends. The drawback is that without terminal blocks on the sides of the power board, the corresponding side panels of the bottom case are too close to the power board and other internal components. This means that static electricity from these side panels may not be effectively discharged, leading to static accumulation between the meter components and the bottom case, increasing the risk of electrostatic discharge. Electrostatic discharge can damage the power board and other sensitive meter components, affecting the device's performance and reliability. Utility Model Content

[0006] In view of the above-mentioned deficiencies of the prior art, the present invention provides a guide rail meter that can ensure that static electricity near the bottom shell side plate of the guide rail meter is properly guided and dissipated, and that the power board and other sensitive meter components are not damaged by static electricity, thereby improving the electrostatic protection capability of the equipment.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A rail meter includes a base shell and a meter element disposed within the base shell; the base shell includes a side plate and a bottom plate connected to the side plate; the side plate has an inwardly extending horizontal extension plate; the extension plate is connected to a vertical electrostatic baffle; there are two electrostatic baffles disposed opposite to each other; the rail meter further includes an intermediate enclosure plate disposed between the two electrostatic baffles; the electrostatic baffles and the intermediate enclosure plate surround to form a receiving cavity; the receiving cavity is used to accommodate the electrostatic-sensitive meter element.

[0009] The bottom shell features an inwardly extending extension plate that connects to a vertically positioned electrostatic barrier. This structure creates a gap between the housing cavity, the internal meter components, and the side plates, thus constructing an effective electrostatic protection barrier. The presence of the electrostatic barrier further enhances this protective effect. The housing cavity houses the highly electrostatic-sensitive meter components, placing them within this protective space and maintaining an effective electrostatic discharge distance from the side plates of the bottom shell of the rail meter. Without the electrostatic barrier, simply adding an extension plate to increase the distance between the meter components and the bottom shell would affect the fixation and integration of the meter components within the meter, causing displacement when the rail meter moves on the rail, making electrostatic protection difficult to achieve. The electrostatic barrier not only provides electrostatic protection but also increases the integration and stability of the rail meter components.

[0010] Preferably, the meter component includes a power board; the power board is used to support the meter component; an electrostatic baffle is provided between the power board and the base plate to increase the distance between the power board and the base plate.

[0011] The power board is located inside the bottom shell. An anti-static rib is designed between the power board and the bottom plate, which increases the distance between the power board and the bottom plate and reduces the possibility of direct conduction of static electricity, thereby improving the anti-static protection capability of the bottom of the power board. Since other meter components are all located on the power board, this also means that the anti-static capability of other meter components is increased.

[0012] Preferably, the meter component further includes a battery, a crystal oscillator, a transformer, and a terminal block; the receiving cavity is located in the middle of the power board, the terminal block is located on both sides of the power board, and the battery, crystal oscillator, and transformer are installed in the receiving cavity.

[0013] Except for the terminal blocks installed at both ends of the power board, all other meter components are installed in the middle of the power board. This includes the electrostatic sensitive element battery, crystal oscillator, transformer installed in the housing cavity, and the meter display element installed above the housing cavity.

[0014] Preferably, the device also includes a top shell connected to the bottom shell; the top shell has terminal through holes for easy wiring of the terminal block; and an end cap for anti-static protection of the terminal block is rotatably connected to the top shell.

[0015] A rotatable end cap for electrostatic discharge (ESD) protection of the terminal block is rotatably connected to the top housing. This design achieves ESD protection while also maximizing the convenience of meter wiring and maintenance. The rotatable end cap design allows for easy rotation from the top housing to the top when wiring is required, providing ample operating space for wiring personnel and avoiding wiring difficulties caused by limited space. Simultaneously, this design also ensures effective ESD protection for the terminal block when not in use, reducing the potential damage of static electricity to sensitive internal components of the meter.

[0016] Preferably, the top shell has a clamping groove for clamping the extension plate.

[0017] The clamping groove ensures a secure connection between the top and bottom shells, enhancing the overall structural stability and protecting the extension plate from damage. In addition, the clamping groove provides electrostatic protection, resisting static electricity from special electrostatic channels on the surfaces of the top and bottom shells.

[0018] Preferably, the electrostatic baffle includes a fixing clip for securing the power board in the height direction; the fixing clip includes an abutment block extending in the horizontal direction and a fixing rib connected to the abutment block.

[0019] The power board is fixed between the stop block and the base plate. Because of the stop block, the power board cannot move vertically, and is firmly fixed to the base plate. This reduces the risk of displacement due to vibration or impact, thus enhancing the overall mechanical stability of the guide rail meter. The stable fixing of the power board helps prevent loosening of electrical connections, reduces electrical faults caused by poor contact, and improves the safety of the guide rail meter.

[0020] Preferably, the electrostatic baffle includes a perforated window; the fixing buckle is disposed inside the perforated window, and the abutting block extends horizontally to the outside of the perforated window.

[0021] The fixing clips placed on the surface of the static baffle will encroach on the internal space of the housing cavity and affect the layout of the meter components. To solve this problem, a hollow window is set. This not only saves the internal space of the housing cavity, but also reduces the stress concentration points in the fixing clips, thereby improving the durability and reliability of the components. At the same time, it reduces the use of materials and directly reduces manufacturing costs.

[0022] Preferably, the inner side of the electrostatic baffle is provided with a foolproof rib to prevent the power board from being installed in the wrong direction.

[0023] The anti-misalignment ribs ensure that the power board can only be installed in the designated position in the correct orientation, avoiding poor contact or functional failure that may be caused by incorrect installation direction, thus improving assembly accuracy and reliability. Because of the anti-misalignment ribs, operators do not need special experience to correctly install the power board, which reduces the skill requirements for operators and thereby improves production efficiency and assembly speed.

[0024] Compared with the prior art, the beneficial effects of this utility model are reflected in:

[0025] 1. This utility model improves electrostatic protection by increasing the distance between the meter components and the meter's base, and by using an electrostatic baffle to form a receiving cavity. This effectively guides and dissipates static electricity, reducing damage to the meter components. Compared to existing rail-mounted meters without electrostatic protection, this solution reduces the risk of electrostatic damage and improves the overall performance and reliability of the rail-mounted meter.

[0026] 2. The design of the extended plate on the bottom shell and the electrostatic baffle makes the installation and maintenance of meter components more convenient, and also facilitates the inspection and upgrading of electrostatic protection. Although the electrostatic baffle and intermediate enclosure have been added, these improvements do not significantly increase manufacturing costs, but they do bring significant performance improvements.

[0027] 3. By adding anti-static ribs, the electrostatic protection capability of the bottom of the power board is improved. Since other meter components are also located on the power board, the anti-static capability of other meter components is also increased.

[0028] 4. The inclusion cavity enables high integration of meter components, which not only optimizes space utilization but also effectively reduces the overall length of the meter, resulting in a compact and efficient layout. This not only enhances the product's aesthetics but also improves its adaptability within limited spaces. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the internal structure of the guide rail gauge;

[0030] Figure 2 This is a side view of the internal structure of the guide rail.

[0031] Figure 3 This is a schematic diagram of the external structure of the guide rail.

[0032] Figure 4 This is a bottom view of the top casing of the guide rail gauge;

[0033] Figure 5 This is a schematic diagram of the electrostatic baffle structure of the guide rail meter;

[0034] Figure 6 This is a top view of the bottom case of the guide rail gauge;

[0035] Figure 7This is a schematic diagram of the overall structure of the guide rail gauge.

[0036] in:

[0037] 1. Bottom shell; 2. Middle partition plate; 3. Receiving cavity; 4. Power board; 5. Terminal block; 6. Top shell; 7. End cover;

[0038] 11. Side plate; 12. Base plate; 13. Extension plate; 14. Static baffle; 15. Static baffle rib; 61. Terminal through hole; 62. Rotating component; 63. Clamping groove;

[0039] 141. Fixing buckle; 142. Cutout window; 143. Anti-fouling rib;

[0040] 1411. Fixed retaining rib; 1412. Abutting block; Detailed Implementation

[0041] To make the technical means, inventive features, objectives, and effects of this utility model readily understandable, the present utility model is further described below in conjunction with specific illustrations. However, this utility model is not limited to the following embodiments.

[0042] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0043] Example 1:

[0044] like Figure 1 , Figure 2 The guide rail meter shown includes a base shell 1 and a meter element disposed within the base shell 1; the base shell 1 includes a side plate 11 and a base plate 12 connected to the side plate 11; the side plate 11 is provided with an extension plate 13 extending horizontally inward; the extension plate 13 is connected to a vertical electrostatic baffle 14; there are two electrostatic baffles 14 and they are arranged opposite to each other; the guide rail meter also includes an intermediate enclosure 2 disposed between the two electrostatic baffles 14; the electrostatic baffles 14 and the intermediate enclosure 2 surround to form a receiving cavity 3; the receiving cavity 3 is used to accommodate the electrostatic-sensitive meter element.

[0045] The bottom shell 1 features an inwardly extending extension plate 13 connected to a vertically positioned electrostatic barrier 14. This structure creates a gap between the housing cavity 3, the meter components within it, and the side plate 11, thus constructing an effective electrostatic protection barrier. The presence of the electrostatic barrier 14 further enhances this protective effect. The housing cavity 3 houses the electrostatically sensitive meter components, placing them within this protective space and maintaining an effective electrostatic discharge distance from the side plate 11 of the bottom shell 1. Without the electrostatic barrier 14, simply adding an extension plate to increase the distance between the meter components and the bottom shell would affect the fixation and integration of the meter components within the meter, causing displacement when the meter moves on the rail, making electrostatic protection difficult to achieve. The electrostatic barrier 14 not only provides electrostatic protection but also increases the integration and stability of the meter components. The intermediate enclosure 2 is fixed by pin headers and nuts located within the housing cavity 3, maximizing the use of the internal space.

[0046] Specifically, the meter components include a power board 4, which is located inside the bottom shell 1; the power board 4 is used to support the meter components. An electrostatic barrier 15 is provided between the power board 4 and the bottom plate 12 to increase the distance between them. The electrostatic barrier 15 between the power board 4 and the bottom plate 12 increases the distance between them, reducing the possibility of direct electrostatic conduction and thus improving the electrostatic protection capability of the bottom of the power board 4. Since other meter components are also located on the power board 4, this also means increased anti-static capability for other meter components.

[0047] Specifically, the meter components also include a battery, crystal oscillator, transformer, and terminal block 5. These components are all positioned above the power board 4 and are electrically connected to it. The housing cavity 3 is located in the middle of the power board 4, while the terminal blocks 5 are located on both sides. The battery, crystal oscillator, and transformer are installed within the housing cavity 3. Except for the terminal blocks 5, which are installed at both ends of the power board 4, all other meter components are installed in the middle of the power board 4. This includes the electrostatic sensing elements (battery, crystal oscillator, transformer) installed in the housing cavity 3, and the meter display element installed above the housing cavity 3. This design achieves high component integration, optimizing space utilization and effectively reducing the overall length of the meter. This results in a compact and efficient layout, enhancing the product's aesthetics and adaptability within limited spaces.

[0048] Specifically, such as Figure 3 and Figure 7As shown, the guide rail meter also includes a top shell 6 connected to the bottom shell 1; the top shell 6 has terminal through holes 61 for easy wiring of the terminal block 5; an end cover 7 for anti-static protection of the terminal block 5 is rotatably connected to the top shell 6. The end cover 7 for anti-static protection of the terminal block 5 is rotatably connected to the top shell 6, and the end cover 7 is connected to the top shell 6 via a rotating component 62, which can be a rotating shaft. This design achieves electrostatic protection while fully considering the convenience of meter wiring and maintenance. The rotatable connection design of the end cover 7 allows it to be easily rotated from the top shell 6 to the top when wiring is required, providing ample operating space for wiring personnel and avoiding wiring difficulties caused by limited space. At the same time, this design also ensures effective electrostatic protection for the terminal block 5 when not in use, reducing the potential damage of static electricity to sensitive internal components of the meter.

[0049] Specifically, such as Figure 4 As shown, the top shell 6 has a clamping groove 63 for holding the extension plate 13. The clamping groove 63 ensures a firm connection between the top shell 6 and the bottom shell 1, enhances the stability of the overall structure, and also protects the extension plate 13 from damage. In addition, the clamping groove 63 also has an electrostatic protection function, which can resist static electricity from some special electrostatic channels on the surface of the top shell 6 and the bottom shell 1.

[0050] Specifically, such as Figure 5 As shown, the electrostatic baffle 14 includes a fixing clip 141 for fixing the power board 4 in the height direction; the fixing clip 141 includes a horizontally extending abutment block 1412 and a fixing rib 1411 connected to the abutment block 1412. The electrostatic baffle 14 includes a cutout window 142; the fixing clip 141 is disposed in the cutout window 142, and the abutment block 1412 extends horizontally to the outside of the cutout window 142.

[0051] The power board 4 is fixed between the abutment block 1412 and the base plate 12. Due to the resistance of the abutment block 1412, the power board 4 cannot move vertically, and is firmly fixed to the base plate 12. This reduces the displacement of the power board 4 caused by vibration or impact, thereby enhancing the mechanical stability of the entire guide rail meter. The stable fixing of the power board 4 helps prevent loosening of electrical connections, reduces electrical faults caused by poor contact, and improves the safety of the guide rail meter. If the fixing buckle 141 were located on the surface of the static baffle 14, it would encroach on the internal space of the receiving cavity 3, affecting the layout of the meter components. To solve this problem, a perforated window 142 is provided. This not only saves internal space in the receiving cavity 3 but also reduces stress concentration points in the fixing buckle 141, thereby improving the durability and reliability of the components, while also reducing material usage and directly lowering manufacturing costs.

[0052] Specifically, such as Figure 6As shown, the inner side of the electrostatic baffle 14 is provided with asymmetrical anti-misalignment ribs 143 to prevent the power board 4 from being installed in the wrong orientation. The anti-misalignment ribs 143 ensure that the power board 4 can only be installed in the designated position in the correct orientation, avoiding poor contact or functional failure that may be caused by incorrect installation orientation, thus improving the accuracy and reliability of assembly. Due to the presence of the anti-misalignment ribs 143, operators do not need special experience to correctly install the power board 4, which reduces the skill requirements for operators and thus improves production efficiency and assembly speed.

[0053] The guide rail meter in this embodiment is a DC guide rail meter, and its overall layout is compatible with 3PCB layout. The end cover features a hidden lead seal design at 7 locations. Since the guide rail meter is installed in a meter box, its front face is usually outwards; this design makes the lead seal holes invisible from the front, improving aesthetics.

Claims

1. A guide rail meter, comprising a base shell (1) and a meter element disposed within the base shell (1); characterized in that, The bottom shell (1) includes a side plate (11) and a bottom plate (12) connected to the side plate (11); the side plate (11) is provided with an extension plate (13) extending horizontally inward; the extension plate (13) is connected to a vertical electrostatic baffle (14); there are two electrostatic baffles (14) and they are arranged opposite to each other; the guide rail meter also includes an intermediate enclosure plate (2) disposed between the two electrostatic baffles (14); the electrostatic baffles (14) and the intermediate enclosure plate (2) surround to form a receiving cavity (3); the receiving cavity (3) is used to receive the meter element that is sensitive to static electricity.

2. The guide rail gauge according to claim 1, characterized in that, The meter component includes a power board (4); the power board (4) is used to support the meter component; an electrostatic baffle (15) is provided between the power board (4) and the base plate (12) to increase the distance between the power board (4) and the base plate (12).

3. The guide rail gauge according to claim 2, characterized in that, The meter component also includes a battery, a crystal oscillator, a transformer, and a terminal block (5); the receiving cavity (3) is located in the middle of the power board (4), the terminal block (5) is located on both sides of the power board (4), and the battery, crystal oscillator, and transformer are installed in the receiving cavity (3).

4. The guide rail gauge according to claim 1, characterized in that, It also includes a top shell (6) connected to the bottom shell (1); the top shell (6) has a terminal through hole (61) for easy wiring of the terminal block (5); and an end cap (7) for antistatic protection of the terminal block (5) is rotatably connected to the top shell (6).

5. The guide rail gauge according to claim 1, characterized in that, The top shell (6) has a clamping groove (63) for clamping the extension plate (13).

6. The guide rail gauge according to claim 2, characterized in that, The electrostatic baffle (14) includes a fixing buckle (141) for fixing the power board (4) in the height direction; the fixing buckle (141) includes an abutment block (1412) extending in the horizontal direction and a fixing rib (1411) connected to the abutment block (1412).

7. The guide rail gauge according to claim 6, characterized in that, The electrostatic baffle (14) includes a cutout window (142); the fixing buckle (141) is located inside the cutout window (142), and the abutting block (1412) extends horizontally outside the cutout window (142).

8. The guide rail gauge according to claim 2, characterized in that, The inner side of the electrostatic baffle (14) is provided with anti-fooling ribs (143) to prevent the power board (4) from being installed in the wrong direction.

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