Electric heater structure plastic-coated part for new energy automobile

Abstract

The utility model discloses an electric heater structure plastic-coated part for a new energy automobile, which relates to the technical field of heater plastic-coated parts, and comprises a plastic part and a die casting, the plastic part is a PTC (Positive Temperature Coefficient) high-pressure air heating heater shell, a connecting frame with a halfpace structure is arranged at the bottom of the plastic part, and the lower part of the connecting frame is matched with the external size of the die casting. A hook-shaped assembly is tightly connected between the die casting and the connecting frame, a glue pouring groove is formed between the upper portion of the connecting frame and the die casting, and a sealing medium is poured into the glue pouring groove. The die casting is simple in structure, the die casting and the plastic part are matched through the hooking structure, a gap between the die casting and the plastic part can be effectively reduced when thermal expansion and cold contraction occur, the glue filling groove is formed, glue filling can be conducted on the gap, connection between the die casting and the plastic part is tight, and the die casting is suitable for popularization.

Description

Technical Field

[0001] The utility model belongs to the technical field of heater plastic-coated parts, and in particular relates to a plastic-coated part of an electric heater structure for a new energy vehicle. Background Art

[0002] The proportion of new energy vehicles in social transportation has been increasing, and they will gradually compete with fuel vehicles. The weight of the whole vehicle has a direct impact on the endurance. More and more car companies use lightweighting as an important indicator to measure parts.

[0003] Traditional controllers are made of die-cast aluminum and have a high overall weight. More and more controllers use plastic-coated structures to reduce weight. However, due to the different expansion and contraction ratios of plastic and metal, there is a gap between the two after the injection molding is completed and cooled, resulting in poor airtightness. Therefore, this example proposes a plastic-coated structure for an electric heater for new energy vehicles that can solve the problem of poor airtightness. Utility Model Content

[0004] The purpose of the utility model is to provide a plastic-coated electric heater structure for new energy vehicles. The structure is simple, and a hook-mounted structure is adopted between the die-casting part and the plastic part. The gap between the two can be effectively reduced when thermal expansion and contraction occur. A glue pouring groove is provided, and glue can be poured into the gap. The die-casting part and the plastic part are tightly connected, which is suitable for promotion.

[0005] The utility model provides the following technical solution: a plastic-coated electric heater structure for new energy vehicles, comprising:

[0006] A plastic part, wherein a connection frame having a step-shaped cross section is provided at the bottom of the plastic part;

[0007] A die casting, wherein the die casting is closely connected to the lower part of the connection frame, and the connection frame and the upper part of the side surface of the die casting form a surrounding glue pouring groove, and the glue pouring groove is filled with a sealing medium to form an extension layer;

[0008] A hook-shaped component is arranged between the plastic component and the die-casting component to form a tensioning structure.

[0009] Preferably, the top of the connection frame is lower than the top of the die-casting, the sealing medium is silica gel, and forms an extension layer of the integral structure between the glue-filling groove and the top of the die-casting.

[0010] Preferably, the hook assembly comprises a hook member and a hook groove, and the hook groove is wrapped around the hook member in an injection molding manner to form an integral structure.

[0011] Preferably, the hook piece and the hook groove are T-shaped structures, and the bottom of the glue-filling groove is the hook groove portion extending from the upper surface of the hook piece.

[0012] The beneficial effects of the utility model are as follows: the structure is simple, the die casting and the plastic part are matched with a hook structure, the gap between the two can be effectively reduced when thermal expansion and contraction occur, and a glue pouring groove is provided to pour glue into the gap, and the die casting and the plastic part are tightly connected, as follows:

[0013] (1) The utility model is provided with a hook and a hook groove. The plastic part is installed on the die-casting part by means of plastic coating. The side of the die-casting part is combined with the plastic part by a hook structure, so that the die-casting part and the plastic part are tightly connected. When thermal expansion and contraction occur, the T-shaped hook is stuck in the hook groove, and the part located in the hook groove extends to the upper and lower sides. Even if expansion or contraction occurs, the plastic part and the die-casting part will not be separated.

[0014] (2) The utility model is provided with a glue pouring groove, and the glue pouring groove is formed between the upper part of the die casting and the connecting frame. After the hook is combined with the hook groove, fluid silicone is poured into the glue pouring groove, so that the fluid silicone fills the glue pouring groove and the gap between the hook and the hook groove. The bottom of the connecting frame has a step-shaped cross-section structure, which supports the part of the hook extending out of the hook groove to prevent the fluid silicone from leaking out. After the sealing medium is formed in the glue pouring groove and the gap between the hook and the hook groove, the connection between the die casting and the plastic part is made tighter. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is an overall schematic diagram of the utility model;

[0017] Figure 2 It is a top view of the utility model;

[0018] Figure 3 It is a cross-sectional view of point A of the utility model;

[0019] Figure 4 It is a cross-sectional view of the utility model at point B;

[0020] Figure 5 It is an enlarged view of point C in the utility model;

[0021] The markings in the figure are: 1. plastic part; 2. connecting frame; 3. clamping hole; 4. die-casting part; 5. glue pouring groove; 6. extension layer; 7. hook groove; 8. hook part. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "top / bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] The structural features of the utility model are now described in detail with reference to the accompanying drawings of the specification.

[0026] See also Figure 1-3 A plastic-coated electric heater structure for new energy vehicles includes: a plastic part 1, a die-casting part 4, and a hook-shaped component. A connecting frame 2 with a step-shaped cross-section is provided at the bottom of the plastic part 1. The step-shaped structure supports the die-casting part 4. The die-casting part 4 is closely connected to the lower part of the connecting frame 2. The connecting frame 2 and the upper part of the side of the die-casting part 4 form a surrounding glue pouring groove 5.

[0027] See also Figure 4-5 The hook component is arranged between the plastic part 1 and the die-casting part 4 to form a tensioning structure. The hook component includes a hook member 8 and a hook groove 7. The hook groove 7 is wrapped on the hook member 8 by injection molding to form an integrated structure. The hook member 8 and the hook groove 7 are T-shaped structures. The T-shaped hook member 8 is stuck in the hook groove 7, and its part located in the hook groove 7 extends to the upper and lower sides to fix the plastic part 1 and the die-casting part 4.

[0028] See also Figure 3-5The glue pouring groove 5 is filled with a sealing medium to form an extension layer 6. The top of the connecting frame 2 is lower than the top of the die-casting 4. The sealing medium is silicone. An extension layer 6 of an integral structure is formed on the top of the glue pouring groove 5 and the die-casting 4. The bottom of the glue pouring groove 5 is a portion of the hook groove 7 extending from the upper surface of the hook 8. By pouring fluid silicone into the glue pouring groove 5, the fluid silicone fills the gap between the glue pouring groove 5 and the hook 8 and the hook groove 7 to form an extension layer 6, so that the connection between the die-casting and the plastic part is tighter.

[0029] The utility model discloses a plastic-coated electric heater structure for new energy vehicles, which has a simple structure. A hook-mounted structure is adopted between the die-casting part and the plastic part, which can effectively reduce the gap between the two when thermal expansion and contraction occur. A glue pouring groove is provided to pour glue into the gap. The die-casting part and the plastic part are tightly connected, and the utility model is suitable for promotion.

[0030] When using it specifically, refer to Figure 2 , 4 The plastic part 1 is installed on the die casting 4 by means of overmolding. The side of the die casting 4 is combined with the plastic part 1 by a hook structure, so that the die casting 4 is tightly connected with the plastic part 1. When thermal expansion and contraction occur, the T-shaped hook 8 is stuck in the hook groove 7, and its part located in the hook groove 7 extends to the upper and lower sides, so that the plastic part 1 and the die casting 4 are fixed as a whole.

[0031] Reference Figure 3-4 After the hook piece 8 is combined with the hook groove 7, fluid silicone is poured into the glue pouring groove 5, so that the fluid silicone fills the glue pouring groove 5 and the gap between the hook piece 8 and the hook groove 7, and the bottom of the connecting frame 2 is a step-shaped structure in cross section, which supports the part of the hook piece 8 extending from the hook groove 7 to prevent the fluid silicone from leaking out, and forms a sealing medium in the glue pouring groove 5 and the gap between the hook piece 8 and the hook groove 7.

[0032] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A plastic-coated electric heater structure for new energy vehicles, characterized in that: include: A plastic part (1), wherein a connection frame (2) having a step-shaped cross-section is provided at the bottom of the plastic part (1); A die casting (4), the die casting (4) being closely connected to the lower part of the connection frame (2), the connection frame (2) and the upper part of the side surface of the die casting (4) forming a surrounding glue pouring groove (5), the glue pouring groove (5) being filled with a sealing medium to form an extension layer (6); A hook-shaped component is arranged between the plastic part (1) and the die-cast part (4) to form a tensioning structure.

2. The electric heater structure plastic-coated component for new energy vehicles according to claim 1, characterized in that: The top of the connection frame (2) is lower than the top of the die-casting (4); the sealing medium is silica gel, and forms an extension layer (6) of an integral structure between the glue pouring groove (5) and the top of the die-casting (4).

3. The electric heater structure plastic-coated component for new energy vehicles according to claim 1, characterized in that: The hook-shaped component comprises a hook piece (8) and a hook groove (7), wherein the hook groove (7) is wrapped around the hook piece (8) by injection molding to form an integral structure.

4. The electric heater structure plastic-coated component for new energy vehicles according to claim 3, characterized in that: The hook member (8) and the hook groove (7) are of T-shaped structure, and the groove bottom of the glue pouring groove (5) is the portion of the hook member (8) that extends out of the hook groove (7) from the upper surface.

Images