Guide rail type electric energy meter

Abstract

The utility model discloses a guide rail type electric energy meter, which relates to the technical field of electric energy meters, and comprises a rear cover and a front cover, the back of the rear cover is slidably connected with a limiting plate at the lower part of a mounting groove, and the interior of the rear cover is fixedly connected with a first sliding rail which is slidably connected with a sliding block connected with the limiting plate; a locking spring is connected between the sliding block and the rear cover, an extrusion driving assembly is connected between the top block and the first pressing rod, a buckle connected with the sliding block is arranged on the first sliding rail, the sliding block is sleeved with a locking sleeve in a sliding mode, a through groove is formed in the locking sleeve, and an unlocking assembly connected with the locking sleeve is arranged on the first pressing rod. According to the utility model, the electric energy meter can be stably and fixedly mounted on the guide rail, even if the electric energy meter is mounted in a transportation or vibration industrial environment, the electric energy meter can be prevented from loosening or slipping off from the guide rail, the normal operation of metering work is ensured, and tools such as screwdrivers are not needed in the mounting and dismounting process, so that the working efficiency is improved. And the dismounting process is simple, convenient and easy to operate.

Description

Technical Field

[0001] This utility model relates to the field of electricity meter technology, and in particular to a rail-mounted electricity meter. Background Technology

[0002] A large amount of electrical energy consumption is concentrated in low-voltage distribution terminals. In order to strengthen the metering assessment and management of terminal electrical energy and facilitate users' on-site use, renovation and upgrading, a rail-mounted electrical energy meter has been designed to address the inconvenience of traditional DDSD and DTSD series wall-mounted electrical energy meters in the field. Due to its small size, light weight and modular structure, it can be used in conjunction with miniature circuit breakers and installed in distribution boxes to realize terminal distribution electrical energy metering.

[0003] As attached Figure 1 As shown, a traditional rail-mounted energy meter generally consists of a back cover 1, a front cover 2, and various components installed inside the back cover 1 and the front cover 2. A mounting groove adapted to the rail 3 is provided on the back of the back cover 1. The upper part of the mounting groove has an integrally formed protrusion 4 that engages with the back of the upper edge of the rail 3, and the lower part has a slot 6. A retaining plate 5 is installed in the slot 6. When the retaining plate 5 is pushed upwards, it can be secured to the back of the lower edge of the rail 3, thus cooperating with the protrusion 4 to install the energy meter on the rail 3. When disassembling the energy meter, the end of a flathead screwdriver needs to be passed through the disassembly groove 8 on the lower surface of the back cover 1 and finally inserted into the disassembly hole 7 at the lower part of the retaining plate 5. Then, by prying the retaining plate 5 downwards with the screwdriver, the retaining plate 5 can be separated from the rail 3, and the energy meter can be removed.

[0004] However, although there is a snap-fit ​​assembly between the slot 6 and the plate 5, when the electricity meter is installed in a transportation or industrial environment with vibration, the electricity meter may loosen or slip off the guide rail 3, resulting in a connection interruption. Therefore, there is still room for improvement in connection stability. Moreover, when removing the electricity meter, tools such as flathead screwdrivers are required to complete the disassembly, which makes the disassembly work inconvenient. Utility Model Content

[0005] The purpose of this invention is to solve the problems of poor installation stability in existing technologies during transportation or in industrial environments with vibration, and the fact that disassembly still requires tools. Therefore, this invention proposes a rail-mounted energy meter.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A rail-mounted energy meter includes a back cover and a front cover. The back cover has a mounting groove on its back side, with a protrusion fixedly connected to the upper part of the mounting groove. A limiting plate is slidably connected to the lower part of the mounting groove on the back side of the back cover. A first slide rail is fixedly connected inside the back cover, and a slider connected to the limiting plate is slidably connected to the first slide rail. A locking spring connects the slider to the back cover, and a first pressure rod extending from the back cover is fixedly connected to the upper part of the slider. A top block is slidably connected inside the back cover for pressing tightly against the inner cavity of the guide rail. A compression drive assembly connects the top block and the first pressure rod. A buckle connected to the slider is provided on the first slide rail for fixing the slider, and a locking sleeve is slidably fitted onto the outside of the slider for fixing the buckle. A through groove is provided on the locking sleeve, and an unlocking assembly connected to the locking sleeve is provided on the first pressure rod.

[0008] In some embodiments, the extrusion drive assembly includes a transmission groove formed on the top block and a transmission pin fixedly connected to the outside of the first pressure rod. The transmission groove is inclined and the transmission pin is slidably inserted into the interior of the transmission groove.

[0009] In some embodiments, the unlocking assembly includes a second pressure rod and a connector. The second pressure rod is slidably connected to the first pressure rod, the connector is connected to the lower part of the second pressure rod and fixedly connected to the locking sleeve, and a return spring is connected between the second pressure rod and the slider.

[0010] In some embodiments, the first slide rail has a groove that communicates with the inside and outside, the upper end of the buckle is fixedly connected to the inner top wall of the groove, and the lower end is a free end that is snapped into the lower end of the slider.

[0011] In some embodiments, the buckle includes an elastic body and a locking block. The upper end of the elastic body is fixed to the inner top wall of the groove, and the locking block is fixedly connected to the lower end of the elastic body and abuts against the lower end of the slider.

[0012] In some embodiments, a second slide rail is fixedly connected to the interior of the rear cover, and the top block is slidably connected to the second slide rail.

[0013] In some embodiments, a protrusion is fixedly connected to the limiting plate, and a connecting groove adapted to the protrusion is opened on the outer surface of the slider. The protrusion is inserted into the connecting groove, and the protrusion is connected to the slider by a screw.

[0014] Compared with the prior art, this utility model provides a rail-mounted energy meter, which has the following advantages:

[0015] By setting up a limiting plate, slider, first pressure rod and locking spring, the energy meter can be firmly fixed on the guide rail. Even if it is installed in a transportation or vibrating industrial environment, it can prevent the energy meter from loosening or slipping off the guide rail, thereby ensuring the stability of the connection and the normal operation of the metering work. Moreover, the installation process is simple, convenient and easy to operate, and it reduces the installation difficulty of the energy meter to a certain extent.

[0016] By using a combination of buckles, locking sleeves, and unlocking components, the elastic body and the locking block can be fixed between the locking sleeve and the slider under the restriction of the locking sleeve. In this case, the locking block can restrict the sliding of the slider and the limiting plate, thereby effectively preventing the electricity meter from falling off, thus further improving the stability of the electricity meter installation.

[0017] By cooperating with the top block, the extrusion drive assembly and the first pressure rod, the top block is also supported in the inner cavity of the guide rail during the installation of the energy meter on the guide rail, thereby making the connection between the energy meter and the guide rail tighter. This can effectively prevent the energy meter from loosening and vibrating between the energy meter and the guide rail during transportation and vibration environments, thus further improving the stability of the energy meter installation.

[0018] Furthermore, pressing the upper ends of the first and second pressure rods allows the energy meter to be released from the guide rail, eliminating the need for tools such as screwdrivers during disassembly. This makes disassembly more convenient and facilitates future maintenance. Loosening the upper ends of the first and second pressure rods also enables the linkage of various structures on the energy meter and a tight, secure self-locking mechanism with the guide rail, eliminating the need for further operations. Therefore, while ensuring installation stability, it also makes the installation and disassembly of the energy meter more convenient.

[0019] Other advantages, objectives and features of this invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be taught from practice of this invention. Attached Figure Description

[0020] Figure 1 This is a rear-view three-dimensional structural diagram of a rail-mounted energy meter in the prior art;

[0021] Figure 2 This is a side view of the three-dimensional structure of the present invention;

[0022] Figure 3 This is a frontal three-dimensional structural diagram of the present invention;

[0023] Figure 4 This is a rear-view three-dimensional structural diagram of the present invention;

[0024] Figure 5 This is a frontal 3D structural diagram of the back cover;

[0025] Figure 6 This is a side-view three-dimensional structural diagram of the components inside the rear cover after an explosion.

[0026] Figure 7 This is a side sectional view of the rear cover.

[0027] Figure 8 This is a frontal sectional view of the present invention.

[0028] Figure 9 for Figure 8 Enlarged structural diagram at point A in the middle;

[0029] Figure 10 This is a side-view three-dimensional structural diagram of the relationship between the limiting plate and the slider.

[0030] In the diagram: 1. Rear cover; 101. Mounting groove; 102. Slide groove; 103. Restriction groove; 2. Front cover; 3. Guide rail; 4. Protrusion; 5. Clamping plate; 6. Clamping slot; 7. Removal hole; 8. Removal groove; 11. Restriction plate; 1101. Protrusion; 12. Slider; 1201. Connecting groove; 13. Top block; 14. Extrusion drive assembly; 1401. Transmission groove; 1402. Transmission pin; 15. First pressure rod; 16. First slide rail; 1601. Groove; 17. Buckle; 1701. Elastomer; 1702. Clamping block; 18. Locking sleeve; 1801. Through groove; 19. Unlocking assembly; 1901. Second pressure rod; 1902. Connector; 1903. Return spring; 20. Locking spring; 21. Second slide rail. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0032] Reference Figure 2-7 A rail-mounted energy meter includes a rear cover 1 and a front cover 2, which are fixed together by screws to form a housing for accommodating the various components of the energy meter. The back of the rear cover 1 has a mounting groove 101 adapted to a rail 3. A protrusion 4 is fixedly connected to the upper part of the mounting groove 101. A sliding groove 102 is formed on the lower part of the mounting groove 101 on the back of the rear cover 1. A limiting plate 11 is slidably connected inside the sliding groove 102, and the upper end of the limiting plate 11 extends into the interior of the mounting groove 101. A first sliding rail 16 is fixedly connected along the height direction inside the rear cover 1. A slider 12 connected to the limiting plate 11 is slidably connected inside the first sliding rail 16. A locking spring 20 is connected between the slider 12 and the rear cover 1 inside the first sliding rail 16.

[0033] A first pressure rod 15 is fixedly connected to the upper part of the slider 12 and is arranged vertically. An extension hole is opened on the upper surface of the rear cover 1. The upper end of the first pressure rod 15 extends upward out of the rear cover 1 through the extension hole. A second slide rail 21 is fixedly connected inside the rear cover 1. A top block 13 is slidably connected inside the second slide rail 21. An extension groove adapted to the top block 13 is also opened on the back of the rear cover 1. The rear end of the top block 13 extends outward into the mounting groove 101 through the extension groove and is pressed tightly against the inner surface of the guide rail 3. A pressing drive assembly 14 is connected between the top block 13 and the first pressure rod 15 to drive the top block 13 to slide away from the front cover 2.

[0034] The first slide rail 16 is provided with a buckle 17 connected to the slider 12 for fixing the slider 12. The slider 12 is slidably sleeved with a locking sleeve 18. The inner surface of the locking sleeve 18 abuts against the outer surface of the buckle 17 to fix the buckle 17 between the locking sleeve 18 and the slider 12. The locking sleeve 18 is provided with a through groove 1801 on the upper side of the buckle 17. The first pressure rod 15 is provided with an unlocking component 19 connected to the locking sleeve 18.

[0035] Reference Figure 6 and Figure 7 The extrusion drive assembly 14 includes a transmission groove 1401 formed on the top block 13 and a transmission pin 1402 fixedly connected to the outside of the first pressure rod 15. The interior of the top block 13 is hollow with openings at the top and bottom. The first pressure rod 15 passes through the interior of the top block 13. The transmission groove 1401 is inclined from the top end to the bottom end in a direction away from the front cover 2, and the transmission pin 1402 is slidably inserted into the interior of the transmission groove 1401.

[0036] Reference Figure 8 and Figure 9 The unlocking component 19 includes a second pressure rod 1901 and a connector 1902. The first pressure rod 15 is a square tube. The second pressure rod 1901 is slidably inserted into the inside of the first pressure rod 15. The upper end of the second pressure rod 1901 is higher than the upper end of the first pressure rod 15. A connecting hole is provided at the lower part of the second pressure rod 1901. The connector 1902 is inserted into the connecting hole in a horizontal direction. Both ends of the connector 1902 are fixedly connected to the locking sleeve 18 by screws. A return spring 1903 is also connected between the second pressure rod 1901 and the slider 12.

[0037] Reference Figure 6 and Figure 9The first slide rail 16 has a groove 1601 with internal and external communication. The upper end of the buckle 17 is fixedly connected to the inner top wall of the groove 1601, and the lower end is a free end and is snapped into the lower end of the slider 12. In order to improve the fixing effect, two grooves 1601 and two buckles 17 can be provided. The two buckles 17 are symmetrically installed in the two grooves 1601 respectively.

[0038] The buckle 17 includes an elastic body 1701 and a locking block 1702. The cross-sectional shape of the locking block 1702 near the slider 12 is an isosceles trapezoid, an isosceles triangle, or an arc. The upper end of the elastic body 1701 is fixed to the inner top wall of the groove 1601, and the locking sleeve 18 abuts against the outer surface of the elastic body 1701. The locking block 1702 is fixedly connected to the lower end of the elastic body 1701 and abuts against the lower end of the slider 12.

[0039] Reference Figure 10 A protrusion 1101 is fixedly connected to the limiting plate 11. A connecting groove 1201 adapted to the protrusion 1101 is opened on the outer surface of the slider 12. The protrusion 1101 is inserted into the connecting groove 1201 and is connected to the slider 12 by screws. This realizes the detachable connection between the limiting plate 11 and the slider 12, and facilitates the replacement of the limiting plate 11 when it is damaged.

[0040] In this utility model, when installing the energy meter, the upper end of the second pressure rod 1901 is pressed down first. Since the elastic force of the return spring 1903 is less than that of the locking spring 20, pressing the second pressure rod 1901 will first drive the second pressure rod 1901 to slide down and retract into the first pressure rod 15. During this process, the second pressure rod 1901 will compress the return spring 1903 and push the locking sleeve 18 down along the first slide rail 16 through the connector 1902, and completely align the through groove 1801 with the buckle 17. At this time, the locking sleeve 18 separates from the elastic body 1701.

[0041] Then, by continuing to press the upper end of the second pressure rod 1901, the first pressure rod 15 can be pressed down at the same time. During this process, the first pressure rod 15 can push the slider 12 downward to slide down. The downward slide of the slider 12 can compress the locking spring 20 to a certain extent, and will also drive the limiting plate 11 to slide down, thereby separating the upper end of the limiting plate 11 from the limiting groove 103. At this time, the rear end of the limiting groove 103 is in an open state. Then, by holding the energy meter and fitting the limiting groove 103 onto the guide rail 3, during this process, ensure that the protrusion 4 is engaged on the back of the upper edge of the guide rail 3. Then, release the upper ends of the first pressure rod 15 and the second pressure rod 1901. At this time, under the rebound force of the locking spring 20, the slider 12, the limiting plate 11 and the first pressure rod 15 can be pushed upward to reset. At this time, the limiting plate 11 is just engaged on the back of the upper edge of the guide rail 3, and through the cooperation with the protrusion 4, the energy meter is firmly fixed on the guide rail 3. Even if installed in transportation or in an industrial environment with vibration, it can effectively prevent the energy meter from loosening or slipping off the guide rail 3, ensuring the stability of the connection.

[0042] Furthermore, during the downward sliding of slider 12, its lower edge can push outward against the locking block 1702, causing the elastic body 1701 to undergo outward bending elastic deformation. After slider 12, limiting plate 11, and first pressure rod 15 are reset upward, the elastic body 1701 will rebound and lock the locking block 1702 at the lower end of slider 12. After slider 12, limiting plate 11, and first pressure rod 15 are reset, the rebound force of reset spring 1903 will push the second pressure rod 1901, connecting piece 1902, and locking sleeve 18 upward to reset upward, thereby causing the locking sleeve 18 to press against the outer surface of elastic body 1701. This fixes elastic body 1701 and locking block 1702 between locking sleeve 18 and slider 12. In this case, locking block 1702 can restrict the downward sliding of slider 12 and limiting plate 11, thereby preventing the guide rail 3 from being loosened, thus further improving the stability of the electricity meter installation.

[0043] During the process of pressing down the second pressure rod 1901 and the first pressure rod 15, the downward movement of the first pressure rod 15 can drive the top block 13 to retract and slide inward into the rear cover 1 through the transmission pin 1402 and the transmission groove 1401, so as to avoid affecting the installation of the electricity meter. After the electricity meter is fitted onto the guide rail 3 through the mounting slot 101 and the second pressure rod 1901 and the first pressure rod 15 are released, during the upward reset process of the slider 12, the limiting plate 11 and the first pressure rod 15, the first pressure rod 15 can also drive the top block 13 to extend and reset towards the guide rail 3 through the transmission pin 1402 and the transmission slot 1401, thereby inserting the top block 13 into the inner cavity of the guide rail 3. Moreover, the outer end of the top block 13 will press tightly against the inner surface of the guide rail 3. Since the height of the top block 13 is the same as the height of the inner cavity of the guide rail 3, the upper and lower surfaces of the top block 13 will be supported in the inner cavity of the guide rail 3, thereby making the connection between the electricity meter and the guide rail 3 tighter, thus further improving the stability of the electricity meter installation and preventing the electricity meter from loosening between the electricity meter and the guide rail 3 during transportation and vibration.

[0044] When it is necessary to remove the electricity meter, simply press the upper end of the second pressure bar 1901 and the first pressure bar 15 again, and the limiting plate 11 will slide down and separate from the guide rail 3 again, just as described above, and then the electricity meter can be removed from the guide rail 3.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. A rail-mounted energy meter, comprising a rear cover (1) and a front cover (2), wherein a mounting groove (101) is provided on the back of the rear cover (1), and a protrusion (4) is fixedly connected to the upper part of the mounting groove (101), characterized in that: The back of the rear cover (1) is slidably connected to the lower part of the mounting groove (101) with a limiting plate (11), and the interior of the rear cover (1) is fixedly connected to a first slide rail (16). A slider (12) connected to the limiting plate (11) is slidably connected on the first slide rail (16). A locking spring (20) is connected between the slider (12) and the rear cover (1). A first pressure rod (15) extending out of the rear cover (1) is fixedly connected to the upper part of the slider (12). A top block (13) is slidably connected inside the rear cover (1) for pressing tightly against the inner cavity of the guide rail (3). A compression drive assembly (14) is connected between the top block (13) and the first pressure rod (15). The first slide rail (16) is provided with a buckle (17) connected to the slider (12) for fixing the slider (12), and the slider (12) is slidably sleeved with a locking sleeve (18) for fixing the buckle (17), and the locking sleeve (18) is provided with a through groove (1801), and the first pressure rod (15) is provided with an unlocking component (19) connected to the locking sleeve (18).

2. The rail-mounted energy meter according to claim 1, characterized in that: The extrusion drive assembly (14) includes a transmission groove (1401) opened on the top block (13) and a transmission pin (1402) fixedly connected to the outside of the first pressure rod (15). The transmission groove (1401) is inclined and the transmission pin (1402) is slidably inserted into the inside of the transmission groove (1401).

3. The rail-mounted energy meter according to claim 1, characterized in that: The unlocking component (19) includes a second pressure rod (1901) and a connector (1902). The second pressure rod (1901) is slidably connected to the first pressure rod (15). The connector (1902) is connected to the lower part of the second pressure rod (1901) and fixedly connected to the locking sleeve (18). A return spring (1903) is connected between the second pressure rod (1901) and the slider (12).

4. The rail-mounted energy meter according to claim 1, characterized in that: The first slide rail (16) has a groove (1601) that is connected to the inside and outside. The upper end of the buckle (17) is fixedly connected to the inner top wall of the groove (1601), and the lower end is a free end that is snapped into the lower end of the slider (12).

5. The rail-mounted energy meter according to claim 4, characterized in that: The buckle (17) includes an elastic body (1701) and a locking block (1702). The upper end of the elastic body (1701) is fixed to the inner top wall of the groove (1601), and the locking block (1702) is fixedly connected to the lower end of the elastic body (1701) and abuts against the lower end of the slider (12).

6. The rail-mounted energy meter according to claim 1, characterized in that: The rear cover (1) is fixedly connected to a second slide rail (21), and the top block (13) is slidably connected to the second slide rail (21).

7. The rail-mounted energy meter according to claim 1, characterized in that: The limiting plate (11) is fixedly connected to a protrusion (1101), and the outer surface of the slider (12) is provided with a connecting groove (1201) that matches the protrusion (1101). The protrusion (1101) is inserted into the connecting groove (1201), and the protrusion (1101) is connected to the slider (12) by screws.

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