Split type direct current guide rail meter

Abstract

A split type direct current guide rail meter comprises a meter shell and a circuit board installed in the meter shell, the meter shell comprises a meter seat and a meter cover installed on the meter seat, the meter seat and the meter cover are spliced to form an installation cavity, and the installation cavity is used for installing the circuit board. In order to improve the installation convenience of the circuit board, a circuit board support is formed on the gauge stand, a supporting rib plate used for positioning and supporting the circuit board is arranged on the circuit board support, an installation step is arranged on the supporting rib plate, the circuit board is supported through the end face of the installation step, and the circuit board is positioned through the side wall of the installation step. Therefore, the circuit board is installed. A plurality of limiting steps used for abutting against the circuit board are arranged on the meter cover, and the circuit board is fixed to the circuit board support through cooperation of the supporting rib plates and the limiting steps.

Description

Technical Field

[0001] This utility model belongs to the technical field of guide rail meters, specifically relating to a split-type DC guide rail meter. Background Technology

[0002] A rail meter is an instrument used for measuring electrical energy. It is usually installed on a standard rail. It adopts a modular design and has the advantages of small size and easy installation. Most rail meters on the market include a casing and multiple circuit boards, with the circuit boards installed inside the casing. Utility model application No. 2023226657546 discloses a rail meter, including a casing, a first circuit board and a second circuit board; the casing has a receiving cavity; the first circuit board is located in the receiving cavity and connected to the casing; the second circuit board is located in the receiving cavity and connected to the first circuit board. This installation method of assembling multiple circuit boards first and then installing them into the casing as a whole has the following disadvantages: (1) The circuit boards need to be connected by external connecting parts, which increases the number of components of the rail meter, thereby increasing production costs; (2) During the installation process, the assembled circuit boards are large in size, which brings certain inconvenience to the installation. At the same time, the circuit boards are easy to separate, resulting in damage to the circuit boards or the need for rework of the circuit boards, which brings inconvenience to the assembly of the rail meter. Summary of the Invention

[0003] To address the above shortcomings, the technical problem to be solved by this utility model is to provide a split-type DC rail meter that improves the ease of circuit board installation without increasing the production cost of the rail meter.

[0004] To solve the above technical problems, the technical solution adopted by this utility model is as follows:

[0005] A split-type DC rail meter includes a meter case and a circuit board installed inside the meter case. The meter case includes a base and a cover mounted on the base. A circuit board support is formed on the base, and a support rib is provided on the circuit board support. The support rib has mounting steps, which support the circuit board through their end faces and position it through their side walls. The cover has multiple limiting steps for abutting the circuit board. The circuit board is fixed to the circuit board support by the cooperation of the support rib and the limiting steps.

[0006] As a preferred embodiment of this utility model, the supporting rib includes a middle supporting plate disposed in the middle of the circuit board bracket and a bottom supporting plate disposed at the bottom of the circuit board bracket, wherein the middle supporting plate and the bottom supporting plate are staggered.

[0007] As a preferred embodiment of this utility model, the mounting step on the central support plate includes a support surface for supporting the circuit board and a guide surface for guiding the circuit board, wherein the guide surface is arranged between the support surface and the inner wall of the circuit board bracket.

[0008] As a preferred embodiment of the present invention, the circuit board includes a top circuit board, a middle circuit board and a bottom circuit board. The top circuit board is disposed on the top surface of the circuit board support, the middle circuit board is installed in the middle of the circuit board support, and the bottom circuit board is disposed at the bottom of the circuit board support.

[0009] As a preferred embodiment of this utility model, the bottom circuit board is provided with a relief groove that is adapted to the middle support plate, and the bottom circuit board is installed on the bottom support plate through the relief groove.

[0010] As a preferred embodiment of this utility model, the circuit board bracket is provided with a spring clip adapted to the bottom support plate, and the bottom circuit board abuts against the bottom support plate through the spring clip.

[0011] As a preferred embodiment of this utility model, the central circuit board is provided with a limiting groove, and the central circuit board abuts against the side wall of the central support plate through the limiting groove.

[0012] As a preferred embodiment of this utility model, the top of the circuit board bracket is provided with a limiting platform, and the side wall of the top circuit board is provided with a slot, which is engaged with the limiting platform.

[0013] As a preferred embodiment of this utility model, the limiting step includes at least a central step surface adapted to the central support plate, through which the central circuit board abuts against the central support plate.

[0014] As a preferred embodiment of this utility model, the end face of the base is provided with a creepage step groove, and the end face of the cover is provided with a creepage insert. After the base and cover are assembled, the creepage insert is inserted into the creepage step groove.

[0015] Compared with the prior art, the beneficial effects of this utility model are: (1) Compared with the existing guide rail structure, this application installs multiple circuit boards on the circuit board bracket, without the need for external connectors to connect the circuit boards, which can reduce the number of components of the guide rail and thus reduce the production cost of the guide rail.

[0016] (2) This application supports the circuit board by means of a support rib and provides an installation step on the support rib. The circuit board is supported and positioned by the end face and side wall of the installation step, thereby realizing the positioning and installation of the circuit board and improving the installation convenience of the circuit board. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the structure of this DC guide rail meter.

[0018] Figure 2 This is a cross-sectional view of this DC guide rail table.

[0019] Figure 3 This is a schematic diagram of the watch cover.

[0020] Figure 4 This is a schematic diagram of the base structure.

[0021] Figure 5 This is a structural diagram of the top circuit board.

[0022] Figure 6 This is a schematic diagram of the middle circuit board.

[0023] Figure 7 This is a schematic diagram of the bottom circuit board.

[0024] Reference numerals: 1. Table base; 1-1. Circuit board bracket; 1-2. Support rib; 1-3. Middle support plate; 1-4. Bottom support plate; 1-5. Support surface; 1-6. Guide surface; 1-7. Creeping step groove; 1-8. Mounting step; 1-9. Support plane; 1-10. Limiting surface; 1-11. Spring buckle; 1-12. Limiting platform; 2. Table cover; 2-1. Limiting step; 2-2. Middle step surface; 2-3. Creeping insert; 2-4. Bottom step surface; 2-5. Adjustment groove; 2-6. Wiring groove; 3. Top circuit board; 3-1. Slot; 4. Middle circuit board; 4-1. Limiting groove; 5. Bottom circuit board; 5-1. Retreat groove; 6. Rotating cover; 6-1. Empty groove; 6-2. First groove; 6-3. Detailed Implementation

[0025] The present invention will now be further described with reference to the accompanying drawings.

[0026] A split-type DC rail meter includes a meter case and a circuit board installed inside the meter case. The meter case includes a base 1 and a cover 2 mounted on the base 1. The base 1 and the cover 2 are assembled to form a mounting cavity for mounting the circuit board. To improve the convenience of circuit board installation, a circuit board support 1-1 is formed on the base 1. The circuit board support 1-1 is provided with a support rib 1-2 for positioning and supporting the circuit board. The support rib 1-2 is provided with a mounting step 1-8. The end face of the mounting step 1-8 supports the circuit board, and the side wall of the mounting step 1-8 positions the circuit board, thereby mounting the circuit board. The cover 2 is provided with multiple limiting steps 2-1 for abutting the circuit board. The circuit board is fixed to the circuit board support 1-1 by the cooperation of the support rib 1-2 and the limiting steps 2-1.

[0027] In this embodiment, the circuit board includes a top circuit board 3, at least one middle circuit board 4, and a bottom circuit board 5. The top circuit board 3 is disposed on the top surface of the circuit board support 1-1, the middle circuit board 4 is installed in the middle of the circuit board support 1-1, and the bottom circuit board 5 is disposed at the bottom of the circuit board support 1-1.

[0028] To facilitate the installation of the top circuit board 3, the middle circuit board 4, and the bottom circuit board 5, the support rib 1-2 includes a middle support plate 1-3 located in the middle of the circuit board bracket 1-1 and a bottom support plate 1-4 located at the bottom of the circuit board bracket 1-1. The middle circuit board 4 is installed on the circuit board bracket 1-1 via the middle support plate 1-3, and the bottom circuit board 5 is installed on the circuit board bracket 1-1 via the bottom support plate 1-4. The middle support plate 1-3 and the bottom support plate 1-4 are staggered to facilitate the installation of the circuit boards onto different middle support plates 1-3 or bottom support plates 1-4.

[0029] In a preferred embodiment, the circuit board support 1-1 may be provided with multiple sets of central support plates 1-3 for fixing multiple central circuit boards 4 at different heights in the middle of the circuit board support 1-1. The top end face of each set of central support plates 1-3 is located on the same plane. In this embodiment, the number of central circuit boards 4 is 1, and a set of central support plates 1-3 may be provided in the middle of the circuit board support 1-1.

[0030] Mounting steps 1-8 are provided on both the middle support plate 1-3 and the bottom support plate 1-4. The mounting step 1-8 on the middle support plate 1-3 includes a support surface 1-5 for supporting the circuit board and a guide surface 1-6 for guiding the circuit board. The guide surface 1-6 is arranged between the support surface 1-5 and the inner wall of the circuit board bracket 1-1, and guides the installation of the middle circuit board 4 through the guide surface 1-6.

[0031] The middle circuit board 4 is provided with a limiting groove 4-1. When the middle circuit board 4 is installed, the limiting groove 4-1 and the middle support plate 1-3 are located on the same vertical plane, and the inner side wall of the limiting groove 4-1 abuts against the side wall of the middle support plate 1-3 where the support surface 1-5 is located. The support surface 1-5 abuts against the bottom surface of the middle circuit board 4, thereby positioning the middle circuit board 4 against the middle support plate 1-3 through the limiting groove 4-1.

[0032] The bottom circuit board 5 is provided with a relief groove 5-1 that is adapted to the middle support plate 1-3. The bottom circuit board 5 is installed on the bottom support plate 1-4 through the relief groove 5-1.

[0033] The mounting steps 1-8 on the bottom support plate 1-4 include a horizontally arranged support plane 1-9 and a vertically arranged limiting surface 1-10. The bottom circuit board 5 is mounted on the support plane 1-9 and is limited by the limiting surface 1-10.

[0034] To facilitate the fixing of the bottom circuit board, a spring clip 1-11 adapted to the bottom support plate 1-4 is provided on the circuit board bracket 1-1, and the bottom circuit board 5 is abutted against the bottom support plate 1-4 through the spring clip 1-11.

[0035] A limiting platform 1-12 is provided at the top of the circuit board bracket 1-1, and a slot 3-1 is provided on the side wall of the top circuit board 3. The slot 3-1 is engaged with the limiting platform 1-12, thereby positioning and installing the top circuit board 3 on the circuit board bracket 1-1, and the top circuit board 3 is abutted against the top of the circuit board bracket 1-1 through the inner end face of the cover 2.

[0036] The limiting step 2-1 includes a middle step surface 2-2 adapted to the middle support plate 1-3 and a bottom step surface 2-4 adapted to the bottom support plate 1-4. The middle step surface 2-2 abuts against the upper end surface of the middle circuit board 4, thereby abutting the middle circuit board 4 against the middle support plate 1-3. The middle step surface 2-2 and the bottom step surface 2-4 respectively wrap around the wiring terminals of the circuit board at different positions. The middle step surface 2-2 and the bottom step surface 2-4 are provided with adjustment grooves 2-5 for rotating the screws on the wiring terminals and wiring grooves 2-6 for wiring.

[0037] The end face of the watch base 1 is provided with a creepage step groove 1-7, and the end face of the watch cover 2 is provided with a creepage insert 2-3. After the watch base 1 and the watch cover 2 are assembled, the creepage insert 2-3 is inserted into the creepage step groove 1-7. The creepage insert 2-3 and the creepage step groove 1-7 increase the contact area at the joint of the watch base 1 and the watch cover 2, thereby increasing the creepage distance of static electricity and improving the antistatic performance of the watch case.

[0038] A rotating cover 6 is installed on the cover 2. The rotating cover 6 has a slot 6-1. The slot 6-1 includes a first slot 6-2 and a second slot 6-3, so that the slot 6-1 is arranged in layers. The lead wires of the middle circuit board 4 are led out of the slot 6-1 through the first slot 6-2, and the lead wires of the bottom circuit board 5 are led out of the slot 6-1 through the second slot 6-3.

[0039] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0040] Although this document uses many terms corresponding to the reference numerals in the figures, the possibility of using other terms is not excluded; these terms are used only to more conveniently describe and explain the essence of this utility model; interpreting them as any kind of additional limitation would be contrary to the spirit of this utility model.

Claims

1. A split-type DC rail watch, comprising a watch case and a circuit board mounted inside the watch case, characterized in that, The watch case includes a base (1) and a cover (2) mounted on the base (1). A circuit board support (1-1) is formed on the base (1). A support rib (1-2) is provided on the circuit board support (1-1). An installation step (1-8) is provided on the support rib (1-2). The circuit board is supported by the end face of the installation step (1-8) and positioned by the side wall of the installation step (1-8). The cover (2) is provided with multiple limiting steps (2-1) for abutting the circuit board. The circuit board is fixed on the circuit board support (1-1) by the cooperation of the support rib (1-2) and the limiting steps (2-1).

2. The split-type DC rail meter according to claim 1, characterized in that, The supporting rib (1-2) includes a central supporting plate (1-3) arranged in the middle of the circuit board bracket (1-1) and a bottom supporting plate (1-4) arranged at the bottom of the circuit board bracket (1-1), wherein the central supporting plate (1-3) and the bottom supporting plate (1-4) are staggered.

3. A split-type DC rail meter according to claim 2, characterized in that, The mounting steps (1-8) on the central support plate (1-3) include a support surface (1-5) for supporting the circuit board and a guide surface (1-6) for guiding the circuit board. The guide surface (1-6) is arranged between the support surface (1-5) and the inner wall of the circuit board bracket (1-1).

4. A split-type DC rail meter according to claim 2, characterized in that, The circuit board includes a top circuit board (3), a middle circuit board (4) and a bottom circuit board (5). The top circuit board (3) is arranged on the top surface of the circuit board support (1-1), the middle circuit board (4) is installed in the middle of the circuit board support (1-1), and the bottom circuit board (5) is arranged at the bottom of the circuit board support (1-1).

5. A split-type DC rail meter according to claim 4, characterized in that, The bottom circuit board (5) is provided with a relief groove (5-1) that is adapted to the middle support plate (1-3). The bottom circuit board (5) is installed on the bottom support plate (1-4) through the relief groove (5-1).

6. A split-type DC rail meter according to claim 4, characterized in that, The circuit board bracket (1-1) is provided with a spring clip (1-11) adapted to the bottom support plate (1-4), and the bottom circuit board (5) abuts against the bottom support plate (1-4) through the spring clip (1-11).

7. A split-type DC rail meter according to claim 4, characterized in that, The central circuit board (4) is provided with a limiting groove (4-1), and the central circuit board (4) abuts against the side wall of the central support plate (1-3) through the limiting groove (4-1).

8. A split-type DC rail meter according to claim 4, characterized in that, The top of the circuit board support (1-1) is provided with a limiting platform (1-12), and the side wall of the top circuit board (3) is provided with a slot (3-1), which is engaged with the limiting platform (1-12).

9. A split-type DC rail meter according to claim 4, characterized in that, The limiting step (2-1) includes at least a middle step surface (2-2) adapted to the middle support plate (1-3), through which the middle circuit board (4) is abutted against the middle support plate (1-3).

10. A split-type DC rail meter according to claim 1, characterized in that, The end face of the base (1) is provided with a creepage step groove (1-7), and the end face of the cover (2) is provided with a creepage insert (2-3). After the base (1) and the cover (2) are assembled, the creepage insert (2-3) is inserted into the creepage step groove (1-7).

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