CN215871216U - Plastic-compression shell - Google Patents

Abstract

The utility model discloses a plastic compression shell which comprises a support (2) used for installing a functional module, wherein the support (2) comprises an external connecting terminal (21) and an installation groove (22), a connecting piece (211) is arranged on the external connecting terminal (21), and the connecting end of the connecting piece (211) is arranged in the installation groove (22). The shell can be used for integrating an intelligent function module comprising a combination of external cascade control of three groups of upper and lower bridge arms, and integrating three groups of IGBT upper and lower bridge arms which are respectively cascaded into one module, thereby realizing the purpose of integrating the volume of the function module.

Description

Plastic-compression shell

Technical Field

The utility model relates to a plastic compression shell.

Background

At present, a common intelligent assembly adopts a combined mode of external cascade control of three groups of upper and lower bridge arms, wherein each upper bridge arm is formed by connecting an IGBT and a fast recovery diode in parallel, each lower bridge arm is also formed by connecting an IGBT and a fast recovery diode in parallel, and then the upper and lower bridge arms are connected in series. The mode has the advantages of complex assembly, larger integral volume and weak interference resistance.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems in the prior art, the utility model aims to provide a plastic shell which can be used for integrating the intelligent functional module comprising the combination of external cascade control of three groups of upper and lower bridge arms and can achieve the purpose of integrating the volumes of the functional modules.

In order to achieve the purpose of the utility model, the plastic compression shell provided herein comprises a support for installing the functional module, wherein the support comprises an external connecting terminal and an installation groove, a connecting sheet is arranged on the external connecting terminal, and a connecting end of the connecting sheet is arranged in the installation groove.

Furthermore, the plastic compression shell provided by the utility model also comprises an inner lead arranged in the mounting groove.

Further, the inner lead is arranged in the mounting groove in a finger type connection mode.

Furthermore, the connecting mode that the connecting piece connecting end is in the mounting groove is finger formula.

Furthermore, a nested nut for installing the functional module is distributed in the installation groove.

Furthermore, the plastic compression shell provided by the utility model also comprises a bottom plate arranged on the bottom surface of the support.

Furthermore, the bottom surface of the support is provided with a glue guide groove, so that the sealing packaging between the support and the bottom plate is realized.

Furthermore, the bottom plate comprises a semi-counter bore for fool-proofing, and a cylinder matched with the semi-counter bore is arranged on the surface of the support, which is mounted on the bottom plate. The cooperation between half counter bore and the cylinder has prevented that assembly error when bottom plate and support assembly from reaching and preventing slow-witted purpose.

Furthermore, the plastic shell provided by the utility model further comprises a cover plate, and the cover plate is buckled with the support to cover the support.

Furthermore, the cover plate is provided with self-locking engaging teeth; and the support is provided with a limiting groove matched with the self-locking occlusion tooth.

Further, the support also comprises a brake port.

The utility model has the beneficial effects that:

1) the shell can be used for integrating an intelligent function module comprising a combination of external cascade control of three groups of upper and lower bridge arms, and integrating three groups of IGBT upper and lower bridge arms which are respectively cascaded into one module, thereby realizing the purpose of integrating the volume of the function module;

2) the shell provided by the utility model also comprises a brake port serving as a brake connection structure, so that the shell can be used for direct current inversion and has a module for supporting the realization of a brake function, and the structural guarantee is further improved for the comprehensive performance of the module;

3) the contact part of the bottom surface of the support and the bottom plate is provided with the glue guide groove, so that the sealing between the support and the bottom plate is realized, and the sealing protection of the functional module arranged on the support is facilitated;

4) the finger type connection mode is adopted, so that the welding difficulty and the welding stress are reduced, and the welding reliability is ensured;

5) the cover plate is provided with self-locking occlusion teeth which are matched with the limiting grooves on the support, and the cover plate is directly pressed into the support in assembly, so that the sealing and self-locking can be realized, and the assembly is convenient.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model. It is obvious that the drawings in the following description are only some embodiments of the utility model, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is an exploded view of a molded housing according to embodiments herein;

FIG. 2 is an overall cross-sectional view of the plastic compression housing of the embodiments of the present disclosure after assembly;

FIG. 3 is a cross-sectional view of a bottom plate of a compression molded housing according to embodiments herein;

FIG. 4 is a schematic structural diagram of a bottom plate of a compression molded housing according to an embodiment of the present disclosure;

FIG. 5 is a front view of a molded housing support of embodiments herein;

FIG. 6 is a rear view of a molded housing support of embodiments herein;

FIG. 7 is a first schematic structural view of a cover plate of a housing molded in accordance with embodiments herein;

FIG. 8 is a second schematic structural view of a cover plate of a housing molded in accordance with embodiments herein;

in the drawings: 1-bottom plate, 2-support, 3-cover plate, 11-semi-counter bore, 12-external mounting hole, 13-internal connecting hole, 21-external connecting terminal, 22-mounting groove, 23-limiting groove, 24-braking port, 25-column, 26-glue guiding groove, 31-self-locking occlusion tooth, 211-connecting piece, 221-internal lead and 222-nested nut.

Detailed Description

While the positioning fixture provided herein has been described in connection with the accompanying drawings and illustrative embodiments more fully and completely, it will be understood by those skilled in the art that the description herein of embodiments is capable of embodiments and of being embodied in many different forms and should not be construed as limited to the examples set forth herein.

Fig. 1-7 show an exemplary structure of a plastic compression casing, which is mainly assembled by a bottom plate 1, a support 2 and a cover plate 3, wherein the bottom plate 1 is provided with an external mounting hole 12 for external mounting, an internal connecting hole 13 for connecting the support 2 and a semi-countersink 11 for foolproof; the bottom surface of the support 2 is provided with a nested nut and a cylinder 25 matched with the semi-counterbore 11, and the semi-counterbore 11 and the cylinder 25 are matched to realize positioning, so that the condition of assembly dislocation is avoided. The support 2 is fixed with the bottom plate 1 through countersunk screws, the number of the nested nuts and the countersunk screws is matched, and the nested nuts and the countersunk screws can be arranged according to the requirement, such as 2, 4, 5 or other; the cover plate 3 is buckled on the support 2 to cover the support 2.

Wherein, support 2 is including the mark have outer connecting terminal 21 of making clear the wiring sign and the mounting groove 22 that is used for functional module, and the wiring sign of mark on outer connecting terminal 21 can be set for as required, can be respectively: p, N, B, U, V, W, and curing the symbol by hot-plastic molding; the external connection terminal 21 is provided with a connection sheet 211 for electrically connecting with external equipment, realizing electrical connection of a power section and bearing large current; the connection end of the connection piece 211 is arranged in the installation groove 22. An inner lead 221 is further arranged in the mounting groove 22, and the inner lead 221 is used for internal control signal connection to realize signal control.

In this embodiment, the connecting end of the connecting piece 211 and the inner lead 221 can be arranged in the mounting groove 22 in any way, such as a wire connection way, a flat cable connection way, and a PCB connection way, but in order to reduce the welding difficulty and the welding stress and ensure the reliability of welding and electrical connection, a finger connection way can be adopted for connection. The finger type is like fingers, the fingers are connected with each other and are the same connecting piece, and the finger type is designed into the fingers for convenient welding, and belongs to the industry known in the technical field.

In this embodiment, the connection piece 211 may be any one, and an oxygen-free copper connection piece is used here. The inner leads 221 are tin bronze inner leads, but inner leads made of other materials may be used.

A glue guide groove 26 is formed in the contact surface of the support 2 and the bottom plate 1 and used for filling sealant to realize closed packaging; a nested nut 222 for installing the functional module is arranged inside the support 2 and used for fixing the functional module.

Here, the support 2 also comprises a braking port 24, the braking function being realized by the housing constituting the product, the housing support only providing a hardware port for realizing the braking function; the function module of cooperation assembly realizes the braking function, and this shell self realizes, and this shell only provides the component basis that realizes the braking function.

In the embodiment, the cover between the support 2 and the cover plate 3 can be closed in any way, and in order to realize the sealing self-locking and make the assembly convenient, the cover plate 3 is provided with the self-locking engaging teeth 31, and the support 2 is provided with the limiting grooves 23 matched with the self-locking engaging teeth 31. The self-locking meshing teeth 31 are matched with the limiting grooves 23, the cover plate 3 can be directly pressed into the support in assembly, closed self-locking is achieved, and installation and alignment are convenient.

The self-locking teeth 31 arranged on the cover plate 3 are self-locking teeth of a back rib reinforcement type, and the number of the self-locking teeth 31 is set according to the situation and can be 3, 4, 6, 7 or other.

In the embodiment, the bottom plate 1 is provided with the semi-counter bore, so that the purposes of fool proofing and convenience in installation are achieved, and the bottom plate material is made of oxygen-free copper and is excellent in heat dissipation performance; of course, other materials may be used.

In the embodiment, the B-type M3 nested nut is adopted as the nested nut, but other nested nuts can be adopted.

The plastic-compression shell has the foolproof function and the self-locking function, and the assembly suggestion can be used for the integration of any functional module, such as the combination mode for external cascade control of three groups of upper and lower bridge arms for integration, and three groups of IGBT upper and lower bridge arms which are respectively cascaded are integrated in one module, so that the overall volume is integrated.

It will be understood that the utility model is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

Claims (11)

1. The utility model provides a mould and press shell, its characterized in that, is including support (2) that are used for the functional module installation, support (2) are including external connection terminal (21) and mounting groove (22), laid connection piece (211) on external connection terminal (21), the link of connection piece (211) is laid in mounting groove (22).

2. The molded housing of claim 1, wherein: the device also comprises an inner lead (221) arranged in the mounting groove (22).

3. The compression molded housing of claim 2, wherein: the inner lead (221) is arranged in the mounting groove (22) in a finger type connection mode.

4. The plastic compression casing as claimed in claim 1, wherein the connecting end of the connecting piece (211) is connected in a finger-type manner in the mounting groove (22).

5. A moulded casing according to claim 1, characterised in that a nesting nut (222) for the mounting of a functional module is arranged in the mounting groove (22).

6. A moulded casing according to claim 1 or 2 or 3 or 4 or 5, further comprising a base plate (1) mounted to the underside of the support (2).

7. Plastic compression casing according to claim 6, characterized in that the bottom surface of the support (2) is provided with a glue guiding groove (26) for realizing a hermetic sealing with the bottom plate (1).

8. The plastic compression shell as claimed in claim 6, wherein the bottom plate (1) comprises a semi-counterbore (11) for fool-proofing, and a column (25) matched with the semi-counterbore (11) is arranged on the surface of the support (2) which is mounted with the bottom plate (1).

9. The plastic compression shell as claimed in claim 1, further comprising a cover plate (3), wherein the cover plate (3) is buckled with the support (2) to cover the support (2).

10. The plastic compression casing as claimed in claim 9, wherein the cover plate (3) is provided with self-locking engaging teeth (31); and a limiting groove (23) matched with the self-locking meshing teeth (31) is distributed on the support (2).

11. The molded housing of claim 1, wherein: the support (2) also comprises a brake port (24).

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