Three-phase guide rail type electric energy meter buckle self-locking support

Abstract

The application discloses a buckle self-locking support for a three-phase guide rail type electric energy meter, and relates to the technical field of buckle self-locking structures. The buckle self-locking support comprises a metal guide rail fixed in an electric meter box, an electric energy meter installed on the front side wall of the metal guide rail, and a buckle self-locking support arranged between the metal guide rail and the electric energy meter. In the application, the electric energy meter is clamped and self-locked on the guide rail through the buckle self-locking support. After the electric energy meter is pressed onto the guide rail, the electric energy meter contacts the rubber ring to rotate the rotating shaft, the driven shaft is driven through the belt, and after the positioning pin is clamped into the groove on the electric energy meter, the latch loses the adsorption constraint of the magnet and naturally falls into the protrusion, thereby fixing the positioning pin on the rotating shaft, and the clamping and self-locking effect of the two sides of the electric energy meter is achieved. Compared with the traditional mode that the electric energy meter is connected in series on the guide rail, the electric energy meter is prevented from shaking and being unstable on the guide rail.

Description

Technical Field

[0001] This invention relates to the field of snap-locking structure technology, specifically to a snap-locking bracket for a three-phase rail-mounted energy meter. Background Technology

[0002] DIN rail-mounted electricity meters are commonly installed using the traditional wall-mounted method, which has disadvantages such as large size and inconvenient installation. In contrast, DIN rail-mounted electricity meters adopt a modular design, which has advantages such as small size, easy installation, and easy networking. They are easy to implement for terminal lighting electricity metering and facilitate the retrofitting of lighting systems with electricity meters.

[0003] Rail-mounted energy meters, due to their miniaturized structure, can be easily used with miniature circuit breakers and installed in terminal distribution boxes. They provide an effective solution for energy metering in low-voltage terminals and can be widely used in buildings, shopping malls, exhibition centers, schools, ports, and factories.

[0004] Regarding the installation of rail-mounted energy meters, the inventor believes that existing energy meter installation methods still have some defects: rail-mounted energy meters are fixed by inserting their outer casing into the internal groove of the rail, mainly relying on the snap-fit ​​and contact between the outer casing and the rail. However, under the existing technology, the installation casing of rail-mounted energy meters lacks connection and fixing structures on both sides, and relying solely on the tension between the rail and the outer casing may cause unstable connection between the energy meter and the rail. Summary of the Invention

[0005] To address the aforementioned deficiencies, the technical problem to be solved by the present invention is to provide a snap-lock bracket for a three-phase rail-mounted energy meter, comprising: a metal rail fixed in the meter box, an energy meter installed on the front side wall of the metal rail, and a snap-lock bracket disposed between the metal rail and the energy meter. The snap-lock bracket includes two back plates, and limit self-locking components are provided on both side walls of the back plates; The limiting self-locking assembly includes a fixing block fixed on both sides of the back plate, a rotating shaft and a driven shaft rotatably connected in the inner cavity of the fixing block, and a rubber ring that contacts the outer surface of the buckle self-locking bracket is fixed on the top of the outer ring of the rotating shaft. A belt for transmission is provided between the rotating shaft and the driven shaft and is wound around the outer ring of the two. A positioning pin for engaging the buckle self-locking bracket is fixed on the side wall of the outer ring of the rotating shaft. The outer ring of the driven shaft is provided with a protrusion, and a pin extends into the interior of the fixed block.

[0006] In the above-mentioned technical solution of a snap-lock bracket for a three-phase rail-mounted energy meter, preferably, two cavities are opened on the side of the back plate that are close to each other, and an extension rod is movably connected to the inner cavity of each cavity.

[0007] In the above-mentioned technical solution of a buckle self-locking bracket for a three-phase rail-mounted energy meter, preferably, a connecting plate is fixed on the back side wall of the back plate, and a fastening bolt is provided between the connecting plate and the metal rail for fixing.

[0008] In the above-mentioned technical solution of a self-locking bracket for a three-phase rail-mounted energy meter, preferably, grooves are provided on both side walls of the energy meter for engaging with positioning pins.

[0009] In the above-mentioned technical solution of a buckle self-locking bracket for a three-phase rail-mounted energy meter, preferably, a tension spring is fixed on the outer surface of the belt, and the other end of the tension spring is fixedly connected to the inner cavity side wall of the fixing block.

[0010] In the above-mentioned technical solution of a self-locking bracket for a three-phase rail-mounted energy meter, preferably, the protrusion has a through hole for inserting a pin, and the fixing block has a round hole for the pin to pass through.

[0011] In the above-mentioned technical solution of a self-locking bracket for a three-phase rail-mounted energy meter, preferably, one end of the rotating plate is rotatably connected to the top surface of the fixed block, and the other end is located directly above the top of the pin.

[0012] In the above-mentioned technical solution of a buckle self-locking bracket for a three-phase rail-mounted energy meter, preferably, a magnet is provided on the bottom surface of the rotating plate, and an iron block that cooperates with the magnet to be attracted is provided on the top of the pin.

[0013] As can be seen from the above technical solution, the self-locking bracket for a three-phase rail-mounted energy meter provided by the present invention has the following advantages compared with the prior art: In this invention, the energy meter is snapped and locked onto the guide rail using a snap-lock bracket. After the energy meter is pressed onto the guide rail in the forward direction, the energy meter contacts the rubber ring and rotates the shaft. This rotates the driven shaft via a belt. After the positioning pin is engaged in the groove on the energy meter, the pin loses the magnetic attraction and naturally falls into the protrusion, thus fixing the positioning pin on the shaft. This achieves a snap-locking effect on both sides of the energy meter. Compared to the traditional method of stringing the energy meter on the guide rail, this invention avoids the energy meter shaking or unstable connection on the guide rail. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments of the present invention or the prior art will be briefly introduced and explained below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram showing the connection between the electricity meter and the self-locking bracket on the guide rail. Figure 2 An exploded view of the connection between the electricity meter and the self-locking bracket. Figure 3 This is an exploded disassembly diagram of a snap-lock bracket; Figure 4 This is a partial exploded sectional view of the snap-lock bracket; Figure 5 for Figure 4 Enlarged diagram of region A in the image; Figure 6 for Figure 4 Enlarged diagram of region B in the image; Figure 7 for Figure 4 A magnified diagram of region C in the image.

[0016] Figure 1-7 The correspondence between the parts is as follows: 1. Metal guide rail; 2. Electricity meter; 3. Snap-on self-locking bracket; 31. Back plate; 32. Fixing block; 33. Fastening bolt; 34. Connecting plate; 35. Cavity; 36. Extension rod; 37. Rotating shaft; 38. Driven shaft; 39. Positioning pin; 310. Rotating plate; 311. Magnet; 312. Rubber ring; 313. Pin; 314. Protrusion; 315. Tension spring; 316. Belt; 4. Groove. Implementation

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

[0018] To provide a clearer explanation and description of the technical solution and implementation of the present invention, several preferred specific embodiments for implementing the technical solution of the present invention are described below.

[0019] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0020] Furthermore, the terms "inner" and "outer", "front" and "back", "left" and "right", "vertical" and "horizontal", "top" and "bottom" used in this document to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0021] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Specific Implementation

[0022] Reference Appendix Figure 1 To be continued Figure 7 ; A self-locking bracket for a three-phase rail-mounted energy meter: This embodiment includes: The metal guide rail 1 is fixed in the meter box, the energy meter 2 is installed on the front side wall of the metal guide rail 1, and the snap-lock bracket 3 is set between the metal guide rail 1 and the energy meter 2; the snap-lock bracket 3 includes two back plates 31, and the two side walls of the back plates 31 are provided with limit self-locking components.

[0023] Specifically, the metal guide rail 1 is installed on the bracket inside the meter box and is installed in a horizontal arrangement. At the same time, the back plate 31 and the self-locking bracket 3 provide installation for a single energy meter 2. There are multiple sets of back plates 31 and self-locking brackets 3 on the metal guide rail 1, and there is a gap of 5cm-10cm between them to allow the back plate 31 to adjust its length.

[0024] The limiting self-locking assembly includes a fixing block 32 fixed on both sides of the back plate 31, a rotating shaft 37 rotatably connected in the inner cavity of the fixing block 32, and a driven shaft 38. The top of the outer ring of the rotating shaft 37 is fixed with a rubber ring 312 that contacts the outer surface of the snap-lock bracket 3.

[0025] Specifically, the rotating shaft 37 and the driven shaft 38 are of equal length and diameter, and their top and bottom ends are connected to the inner cavity sidewall of the fixed block 32 through rotating parts; the outer edge of the rubber ring 312 on the rotating shaft 37 is serrated, and the edge of the rubber ring 312 protrudes slightly to the outside of the inner cavity of the fixed block 32, so that when the instrument 2 is inserted, the friction of the rubber ring 312 and the protrusion drive the rotating shaft 37 and the driven shaft 38 to rotate.

[0026] A belt 316 for transmission is provided between the rotating shaft 37 and the driven shaft 38, which is wound around the outer ring of both. A positioning pin 39 for engaging the self-locking bracket 3 is fixed on the outer ring side wall of the rotating shaft 37. A protrusion 314 is provided on the outer ring of the driven shaft 38, and a pin 313 extends into the protrusion 314 through the interior of the fixing block 32.

[0027] Specifically, after the energy meter 2 is inserted into the back plate 31 in the forward direction, the two side surfaces of the energy meter 2 contact the outer surface of the rubber ring 312. Due to the friction between the rubber ring 312 and the energy meter 2, the push of the energy meter 2 will drive the rotating shaft 37 to rotate. Since the belt 316 is wrapped around the outer ring of the rotating shaft 37 and the driven shaft 38 for transmission, after the rotating shaft 37 is rotated and the positioning pin 39 is rotated into the groove 4 of the energy meter 2, the driven shaft 38 will also rotate the protrusion 314 to the lower end position of the pin 313.

[0028] Two cavities 35 are formed on the adjacent sides of the back plate 31, and an extension rod 36 is movably connected to the inner cavity of each cavity 35. A connecting plate 34 is fixed to the back side wall of each back plate 31, and a fastening bolt 33 is provided between the connecting plate 34 and the metal guide rail 1 for fixing.

[0029] Specifically, when installing electricity meters of different lengths and sizes, after comparing the length of the electricity meter, the extension rod 36 is pulled out from the two cavities 35. After increasing the distance between the two back plates 31, the back plates 31 are fixed to the metal guide rail 1 using the fastening bolts 33 on the connecting plate 34, so that the snap-fit ​​self-locking bracket can be used for electricity meters of different specifications.

[0030] The side walls of the electricity meter 2 are provided with grooves 4 for engaging with the positioning pins 39.

[0031] Specifically, the groove 4 on the side wall of the electricity meter 2 is 1 / 4 cylindrical in shape, and its shape can match the rotation insertion / disengagement trajectory of the positioning pin 39.

[0032] A tension spring 315 is fixed to the outer surface of the belt 316, and the other end of the tension spring 315 is fixedly connected to the inner cavity side wall of the fixing block 32. The inside of the protrusion 314 is provided with a through hole for the insertion of the pin 313, and the inside of the fixing block 32 is provided with a round hole for the pin 313 to pass through.

[0033] One end of the rotating plate 310 is rotatably connected to the top surface of the fixed block 32, and the other end is located directly above the top of the pin 313. A magnet 311 is provided on the bottom surface of the rotating plate 310, and an iron block that cooperates with the magnet 311 to be attracted is provided on the top of the pin 313.

[0034] Specifically, after rotating the rotating plate 310 to release the attraction between the magnet 311 at its bottom and the pin 313, the pin 313 naturally falls and inserts into the through hole inside the protrusion 314. The insertion of the pin 313 fixes the position of the driven shaft 38, thereby restricting the position of the rotating shaft 37 with the help of the belt 316. Conversely, when it is necessary to remove the energy meter 2, the rotating plate 310 is rotated back to its original position. The attraction of the magnet 311 pulls the pin 313 out of the protrusion 314. At this time, the tension spring 315 on the belt 316 uses its elasticity to keep the rotating shaft 37 and the driven shaft 38 on the belt 316 in place, thereby allowing the positioning pin 39 to disengage from the groove 4.

[0035] Finally, it should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0036] As used herein, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] This invention is not limited to the above-described preferred embodiments. Anyone should know that any structural changes made under the guidance of this invention, and any technical solutions that are the same as or similar to this invention, fall within the protection scope of this invention.

Claims

1. A self-locking bracket for a three-phase rail-mounted energy meter, characterized in that, It includes a metal rail (1) fixed in the meter box, an energy meter (2) installed on the front side wall of the metal rail (1), and a snap-lock bracket (3) set between the metal rail (1) and the energy meter (2). The buckle self-locking bracket (3) includes two back plates (31), and limit self-locking components are provided on both sides of the back plate (31); The limiting self-locking assembly includes a fixing block (32) fixed on both sides of the back plate (31), a rotating shaft (37) and a driven shaft (38) rotatably connected in the inner cavity of the fixing block (32), and a rubber ring (312) that contacts the outer surface of the buckle self-locking bracket (3) is fixed on the top of the outer ring of the rotating shaft (37). A belt (316) is provided between the rotating shaft (37) and the driven shaft (38) for transmission, and a positioning pin (39) for engaging the buckle self-locking bracket (3) is fixed on the side wall of the outer ring of the rotating shaft (37). The driven shaft (38) has a protrusion (314) on its outer ring, and a pin (313) extends into the protrusion (314) through the interior of the fixing block (32). The two side walls of the energy meter (2) are provided with grooves (4) for engaging with the positioning pin (39). A tension spring (315) is fixed on the outer surface of the belt (316), and the other end of the tension spring (315) is fixedly connected to the inner cavity side wall of the fixing block (32). The protrusion (314) The interior of the fixed block (32) has a through hole for inserting the pin (313), and the interior of the fixed block (32) has a round hole for the pin (313) to pass through. The top surface of the fixed block (32) is rotatably connected to one end of the rotating plate (310). The other end of the rotating plate (310) is located directly above the top of the pin (313). A magnet (311) is provided on the bottom surface of the rotating plate (310), and an iron block that cooperates with the magnet (311) to be attracted is provided on the top of the pin (313).

2. The self-locking bracket for a three-phase rail-mounted energy meter according to claim 1, characterized in that, Two cavities (35) are opened on the side of the back plate (31) that are close to each other, and an extension rod (36) is movably connected to the inner cavity of each cavity (35).

3. The self-locking bracket for a three-phase rail-mounted energy meter according to claim 1, characterized in that, Each back plate (31) has a connecting plate (34) fixed on its back side wall, and a fastening bolt (33) is provided between the connecting plate (34) and the metal guide rail (1) for fixing.

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