Ammeter case assembly

Abstract

The utility model discloses an ammeter case assembly, which comprises a bottom box, a surface cover and a terminal box, a volume cavity is arranged in the bottom box, the surface of the volume cavity is an open surface, the upper part of the volume cavity is a component cavity, and the lower part of the volume cavity is a wiring cavity; the surface cover can be covered on the surface of the bottom box and is used for carrying out closed assembly on the open surface of the volume cavity; the terminal box has an outer contour size for being placed into the wiring cavity, a connecting seat extending outwards is arranged at the upper part of one side of the terminal box, and an assembly structure is formed on the side connecting seat; and an assembling part matched with the assembling structure is formed on the inner side surface of the surface cover, the terminal box can be directly connected and assembled on the surface cover through the combination of the assembling structure and the assembling part, and the terminal box is embedded into the wiring cavity of the bottom box when the surface cover covers and is fixedly assembled on the surface of the bottom box. The utility model has the advantages of simple operation, stable connection, convenient repair and maintenance and the like, and can greatly improve the assembly efficiency and accuracy of the intelligent electric meter.

Description

Technical Field

[0001] The utility model relates to a shell structure in electric meter technology, in particular to an electric meter shell component. Background Art

[0002] With the development of smart grid, smart meters, as one of its important components, have been used more and more widely, and the market demand for smart meters has also grown explosively.

[0003] The terminal box is the wiring structure of the smart meter. In the prior art, the terminal box is usually directly assembled in the bottom box structure of the meter, so that when assembling, inspecting and maintaining the upper component cavity of the corresponding terminal box in the meter, the operating space is small, which increases the difficulty of the operation and also reduces the efficiency of the wiring operation. Utility Model Content

[0004] The technical problem solved by the utility model is to provide an electric meter case component to solve the defects in the above technical background.

[0005] The technical problem solved by the utility model is achieved by the following technical solutions:

[0006] An electric meter case assembly comprises a base box, a face cover and a terminal box; a volume cavity is arranged in the base box, the surface of the volume cavity is an open surface, the upper part of the volume cavity is a component cavity, and the lower part is a wiring cavity; the face cover can be covered on the surface of the base box and the open surface of the volume cavity can be sealed and assembled; the terminal box has an outer contour size for being placed in the wiring cavity, a connecting seat extending outward is arranged on an upper part of one side of the terminal box, and an assembly structure is formed on the side connecting seat; an assembly part matching the assembly structure is formed on the inner side surface of the face cover, and the terminal box can be directly connected and assembled on the face cover through the combination of the assembly structure and the assembly part, and when the face cover is covered, combined and fixedly assembled on the surface of the base box, the terminal box is embedded in the wiring cavity of the base box.

[0007] As a further limitation, the surface cover includes a main surface cover and a sub-cover, the main surface cover matches the size of the component cavity and can cover the surface of the component cavity, the sub-cover matches the size of the wiring cavity and can cover the surface of the wiring cavity; the assembly portion is formed on the inner side of the main surface cover;

[0008] The main cover and the auxiliary cover are independently formed and can be independently assembled on the bottom box; the main cover is assembled on the bottom box by a combination of snap-fitting and threaded fastening, and the auxiliary cover is assembled on the bottom box by a combination of slot insertion and threaded fastening;

[0009] An external module assembly position is also reserved on the upper part of the component cavity, and the surface of the external module assembly position is covered by a module box cover;

[0010] The auxiliary cover is provided with an openable terminal cover plate, which is hinged to the auxiliary cover and can be opened in a flipping manner. A lead sealing bolt assembly position is reserved on the opposite side of the hinge setting position of the terminal cover plate;

[0011] An inner locking structure is also provided between the main cover and the auxiliary cover, and the auxiliary cover can be removed from the main cover only when the inner locking structure is unlocked.

[0012] As a further limitation, the assembly structure is a combination of a pre-fixed structure and a threaded assembly structure, and the pre-fixed structure is one or a combination of a plug-in structure, a snap-on structure, a clamping structure, a pin structure, a positioning step structure, and a magnetic attraction structure.

[0013] As a further limitation, the terminal box is also formed with a wire buckle plate, and the wire buckle plate is formed with a wire hole for the wire to pass through; the hole diameter of the wire hole matches the wire to be inserted, and the setting position of the wire hole matches the wire connection position on the terminal box;

[0014] The terminal button box is formed with protrusions on the outer edges of both sides of the wiring terminal, and buckle holes are formed on the protrusions; the wire buckle plate has fixing buckles matching the buckle holes on both sides of the plate body, and the wire buckle plate is formed with a lead sealing bolt assembly position for assembling lead sealing bolts in the middle position of the plate body.

[0015] As a further limitation, the surface of the base box at the wiring cavity is lined with buffer foam, and an insulating heat dissipation film is mounted on the surface of the buffer foam.

[0016] Beneficial effects: The meter case assembly of the utility model can facilitate the terminal wiring assembly by optimizing the assembly structure; the meter case assembly assembles the terminal button box on the back side of the cover instead of directly assembling it on the bottom box, which effectively reduces the difficulty of wiring operation, can effectively improve the terminal wiring assembly efficiency, and makes the wire wiring process simpler, especially when the number of wiring is large, the operation is simpler and faster, and the error rate is reduced;

[0017] At the same time, the terminal box and the cover can be disassembled together, so that the operating space is larger when inspecting and maintaining the components inside the volume cavity, which reduces the difficulty of operation;

[0018] The terminal box is equipped with a wire clip plate structure, which can make the positioning of the wires on the terminal box quick and easy, and keep the wires axial at the front end of the wire entry hole on the terminal box. The clamping of the wire clip plate makes the wire wiring process more stable, reduces the possibility of wire coming out, and is not prone to displacement, thereby improving the wiring quality and ensuring wiring safety.

[0019] In summary, the utility model provides an electric meter case assembly with the advantages of reasonable structure, simple operation, stable connection, and easy maintenance. It is suitable for the manufacture and use of smart meters and is expected to contribute to the development of my country's smart grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the assembly of a preferred embodiment of the utility model.

[0021] Among them: 1. Module box cover; 2. Base box; 3. Component cavity; 4. Wiring cavity; 5. Connecting seat; 6. Terminal box; 7. Buckle hole; 8. Fixing buckle; 9. Wire buckle plate; 10. Lead seal bolt assembly position I; 11. Sub-cover; 12. Inner lock assembly hole; 13. Terminal cover plate; 14. Inner lock hole cover; 15. Lead seal bolt assembly position II; 16. Main surface cover. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific illustrations.

[0023] See also Figure 1 A preferred embodiment of an electric meter case assembly is provided. In this embodiment, the electric meter case assembly includes a bottom box 2, a surface cover and a terminal box 6.

[0024] The bottom box 2 and the top cover are both injection-molded structural parts, and the back side of the bottom box 2 is reserved with an assembly fixing structure position. By setting an assembly fixing such as a back hook at the assembly position of the assembly part, the assembled case structure can be fixed and assembled on a wall or a corresponding assembly frame. The front of the bottom box 2 is formed with a volume cavity, and the surface of the volume cavity is an open surface. The upper part of the volume cavity is a component cavity 3, and the lower part is a wiring cavity 4; the component cavity 3 is used to assemble components that realize the functions of the electric meter. In order to assist in assembly, an assembly structure for assisting component assembly can also be provided in the component cavity 3. The assembly structure can be one or a combination of a bracket, a partition, a slot, a buckle, a limit buckle, and an assembly column, and the wiring cavity 4 has an inner contour that matches the terminal box 6, and is used as a storage space for the terminal box 6.

[0025] The surface cover of the present embodiment can be used to cover the surface of the base box 2 and perform a closed assembly of the open surface of the entire volume cavity of the base box 2. The surface cover includes a detachable module box cover 1, a main surface cover 16 and a sub-cover 11. The main surface cover 16 is a main structure, which covers the surface of the component cavity 3 of the wiring cavity 4, and can be fixedly assembled on the surface of the component cavity 3 by a combination of snap fixation and threaded fastening; the surface of the main surface cover 16 has a transparent window structure corresponding to the reading area and a light guide column assembly structure that can be used for data reading; an independent external module assembly position is separated from the upper part of the component cavity 3 by a partition, and the external module assembly position can be used for the assembly of an extended functional structure. The surface cover covers the external module assembly position through the module box cover 1 at the position corresponding to the external module assembly position. After the main surface cover 16 is assembled, the module box cover 1 is detachably connected and assembled by a detachable connection assembly method with a buckle and a lead-sealing bolt. The auxiliary cover 11 is assembled as a whole with the main surface cover 16 and the bottom box 2; the covering position of the auxiliary cover 11 corresponds to the setting area of ​​the lower wiring cavity 4 of the bottom box 2, and the upper part of the auxiliary cover 11 and the lower part of the main surface cover 16 have an overlapping area, the lower part of the main surface cover 16 is located on the inner side of the overlapping area, and the upper part of the auxiliary cover 11 is located on the outer side of the overlapping area. The above structure makes it necessary for the auxiliary cover 11 to be covered at the position corresponding to the wiring cavity 4 in the lower part of the main surface cover 16 only after the main surface cover 16 is covered. The covering method of the auxiliary cover 11 is a combined assembly method of slot insertion and threaded fastening. The corresponding slot insertion position can be located on the main surface cover 16, on the bottom box 2, or on the combined structure of the main surface cover 16 and the bottom box 2 in different embodiments.

[0026] In addition, an inner locking structure for locking the assembly state of the main surface cover 16 is also provided between the main surface cover 16 and the auxiliary cover 11. Specifically in this embodiment, the inner locking structure is arranged at the overlapping position of the main surface cover 16 and the auxiliary cover 11. At the same time, an inner locking assembly hole 12 is provided on the auxiliary cover 11 corresponding to the above-mentioned overlapping position. The inner locking hole cover 12 is covered by a pivotally connected inner locking hole cover 14. After opening the inner locking hole cover 14, the inner locking structure is unlocked by an unlocking device in the inner locking assembly hole 12 and the main surface cover 16 is unlocked. The auxiliary cover 11 can be removed from the main surface cover 16 only when the inner locking structure is unlocked.

[0027] In this embodiment, the terminal box 6 is a wiring structure for the wire, on which a wiring terminal is arranged, and can be electrically connected to the corresponding components in the component cavity 3 through a contact or a connecting wire structure on the back side or the upper part of the terminal box 6 to realize the corresponding function. The terminal box 6 is formed with a connection seat 5 extending upward at the upper left part, and the connection seat 5 is formed with a card interface and a threaded assembly position, and the corresponding main cover 16 is formed with an assembly position matching the connection seat 5 at the corresponding position on the back side. Through the combination of the above-mentioned card interface and the threaded assembly position, the terminal box 6 can be assembled with the main cover 16 in the cover at the connection seat 5 position, and when the main cover 16 is covered on the surface of the bottom box 2, the corresponding terminal box 6 will be correspondingly embedded in the wiring cavity of the bottom box 2. In other embodiments, the card interface on the connection seat 5 can also be replaced by one or a combination of a plug-in structure, a snap-on structure, a clamping structure, a pin structure, a positioning step structure, and a magnetic structure, so as to reach the pre-fixation of the connection seat 5 at the corresponding assembly position on the back side of the main cover 16.

[0028] The front surface of the terminal button box 6 is the wire assembly area (i.e., the corresponding wiring terminal), on which a number of wire assembly terminals are formed. The terminal button box 6 is formed with forwardly protruding outer edges on both sides of the wire assembly terminals, and relatively arranged buckle holes 7 are formed on the outer convex parts on both sides. The buckle holes 7 are used to clamp and assemble the wire buckle plate 9 as an independent structure. The corresponding wire buckle plate 9 is a long strip plate body matching the front end surface of the terminal button box 6, and a wire hole matching the wire assembly terminal on the terminal button box 6 is formed on the plate surface, and the aperture of the wire hole matches the wire to be inserted; the wire buckle plate 9 is formed with a lead sealing bolt assembly position I for assembling lead sealing bolts in the middle position of the plate body 10; The wire clamp plate 9 has fixing buckles 8 on both sides that match the buckle holes 7, and a 6mm gap is reserved between the wire clamp plate 9 and the terminal surface of the terminal box 6 after the terminal of the terminal box 6 is assembled through the buckle holes 7 / fixing buckles 8. The wire clamp plate 9 can be used to preset the position of the access wire, and after the preset insertion, the wire terminal is assembled on the terminal box 6 by inserting the whole wire. After the assembly, the wire will maintain axial entry between the wire clamp plate 9 and the terminal box 6. The clamping of the wire clamp plate makes the wire wiring process more stable, reduces the possibility of the wire coming out, and is not easy to cause the wire end to fold and shift.

[0029] In another embodiment, in order to improve the structural stability of the entire terminal box 6 in the wiring cavity 4 after the terminal box 6 is assembled in the base box 2 together with the main surface cover 16, a cushioning foam is lined on the surface of the wiring cavity 4, and an insulating heat dissipation film is attached to the surface of the cushioning foam, and the insulating heat dissipation film is used as the contact surface of the terminal box 6.

[0030] The auxiliary cover 11 is formed with an openable terminal cover 13 at the position corresponding to the wiring chamber 4. The terminal cover 13 is hinged to the auxiliary cover 11 at the bottom and can be opened by flipping from top to bottom. The terminal cover 13 is also reserved with a lead sealing bolt assembly position II 15 on the opposite side of the hinge setting position; the above structure allows the terminal cover 13 to be opened independently, and the terminal box 6 in the wiring chamber 4 can be wired, and the cover can be closed and locked with a lead sealing bolt after the wiring operation is completed.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the purpose of these embodiments is only to illustrate the utility model and is not intended to limit the scope of protection of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various changes, modifications and / or variations to the utility model, and all of these equivalent forms also fall within the scope of protection defined by the claims attached to this application.

Claims

1. An electric meter case assembly, characterized in that: It comprises a base box, a surface cover and a terminal box; a volume cavity is arranged in the base box, the surface of the volume cavity is an open surface, the upper part of the volume cavity is a component cavity, and the lower part is a wiring cavity; the surface cover can be covered on the surface of the base box and the open surface of the volume cavity can be closed and assembled; the terminal box has an outer contour size for being placed in the wiring cavity, a connecting seat extending outward is arranged on an upper part of one side of the terminal box, and an assembling structure is formed on the side connecting seat; an assembling part matching the assembling structure is formed on the inner side surface of the surface cover, and the terminal box can be directly connected and assembled on the surface cover through the combination of the assembling structure and the assembling part, and when the surface cover is covered, combined and fixedly assembled on the surface of the base box, the terminal box is embedded in the wiring cavity of the base box.

2. The electric meter case assembly according to claim 1, characterized in that: The surface cover includes a main surface cover and a sub-cover. The main surface cover matches the size of the component cavity and can cover the surface of the component cavity. The sub-cover matches the size of the wiring cavity and can cover the surface of the wiring cavity. The assembly part is formed on the inner side of the main surface cover.

3. The electric meter case assembly according to claim 2, characterized in that: The main cover and the auxiliary cover are independently formed and can be independently assembled on the base box; the main cover is assembled on the base box by a combination of snap-fitting and threaded fastening, and the auxiliary cover is assembled on the base box by a combination of slot insertion and threaded fastening.

4. The electric meter case assembly according to claim 2, characterized in that: An external module assembly position is also reserved on the upper part of the component cavity, and the surface of the external module assembly position is covered by a module box cover.

5. The electric meter case assembly according to claim 2, characterized in that: The auxiliary cover is provided with an openable terminal cover plate, which is hinged to the auxiliary cover and can be opened in a flipping manner. A lead sealing bolt assembly position is reserved on the opposite side of the hinge setting position of the terminal cover plate.

6. The electric meter case assembly according to claim 1, characterized in that: An inner locking structure is also arranged between the main cover and the auxiliary cover.

7. The electric meter case assembly according to claim 1, characterized in that: The assembly structure is a combination of a pre-fixed structure and a threaded assembly structure, and the pre-fixed structure is one or a combination of a plug-in structure, a snap-on structure, a clamping structure, a pin structure, a positioning step structure, and a magnetic attraction structure.

8. The electric meter case assembly according to claim 1, characterized in that: The terminal box is also formed with a wire buckle plate, and the wire buckle plate is formed with a wire hole for the wire to pass through; the hole diameter of the wire hole matches the wire to be inserted, and the setting position of the wire hole matches the wire connection position on the terminal box.

9. The electric meter case assembly according to claim 8, characterized in that: The terminal box is formed with protrusions on the outer edges on both sides of the wiring terminal, and buckle holes are formed on the protrusions; the wire buckle plate has fixing buckles matching the buckle holes on both sides of the plate body, and the wire buckle plate is formed with a lead sealing bolt assembly position for assembling lead sealing bolts in the middle position of the plate body; after the terminal of the terminal button box is assembled, a gap of 3~8mm is reserved between the wire buckle plate and the surface of the terminal of the terminal button box.

10. The electric meter case assembly according to claim 1, characterized in that: The surface of the bottom box at the wiring cavity position is lined with buffer foam, and an insulating heat dissipation film is attached to the surface of the buffer foam.

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