PTC heating core assembly tool

Abstract

The utility model discloses a PTC heating core assembly tool. It includes lower base, and the lower base is provided with detachable upper base through connecting piece, and the upper base is provided with the PTC sheet limiting slot that is through and is matched with the PTC sheet shape on the upper base, the PTC sheet limiting slot front end is provided with the lower electrode limiting slot that is matched with the lower electrode strip extension electrode part shape and the upper electrode limiting slot that is matched with the upper electrode strip extension electrode part shape, and the PTC sheet limiting slot tail end is provided with the electrode strip tail part limiting slot that is matched with the lower electrode strip main part shape. Advantage is: the upper base is provided with the through limiting slot that is matched with each layer shape of PTC heating core and coincides with the midaxial line in the width direction, plays the limiting effect to each layer when assembling, avoids the risk that the insulating film is broken by electrode strip corner, the assembly process is difficult to carry out and the like caused by misplacement, makes the assembly process more stable and reliable, and the assembly tool is composed of detachable upper base and lower base, and the finished product is more convenient to take out.

Description

Technical Field

[0001] This utility model relates to a PTC heater, specifically a PTC heating element assembly fixture. Background Technology

[0002] The PTC heating element is a crucial component of the PTC heater, comprising a heating section encased in an aluminum tube by an insulating film. This section consists of a PTC sheet and electrode strips clamped to the upper and lower sides of the PTC sheet, secured with adhesive. Current assembly fixtures are prone to misalignment when placing the PTC sheet onto the lower electrode strip. This can cause the insulating film to be torn by the edges of the electrode strips during wrapping, resulting in poor voltage withstand performance of the heating element, potentially leading to insulation failure and even serious vehicle malfunctions. Furthermore, misalignment between the PTC sheet and the electrode strips can hinder subsequent assembly processes, reducing production efficiency. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a PTC heating core assembly tooling that provides precise and efficient assembly.

[0004] To solve the above-mentioned technical problems, the present invention provides a PTC heating element assembly fixture, including a lower base, on which a detachable upper base is provided via a connector. The upper base has a through PTC sheet limiting groove that matches the shape of the PTC sheet. The front end of the PTC sheet limiting groove has a lower limit groove that matches the shape of the extended electrode portion of the lower electrode strip, and an upper limit groove that matches the shape of the extended electrode portion of the upper electrode strip. The rear end of the PTC sheet limiting groove has an electrode strip tail limiting groove that matches the shape of the main body portion of the lower electrode strip.

[0005] The central axes of the PTC sheet limiting groove and the electrode strip tail limiting groove coincide in the width direction.

[0006] The width of the PTC sheet limiting groove is greater than the width of the electrode strip tail limiting groove.

[0007] The width of the PTC sheet limiting groove is 2cm wider than the limiting groove at the tail of the electrode strip.

[0008] The advantages of this utility model are:

[0009] (1) The upper base has a through-type limiting groove that matches the shape of each layer of the PTC heating core and coincides with the central axis in the width direction. It plays a limiting role in each layer during assembly, avoiding the risks of misalignment, such as the insulating film being scratched by the edge of the electrode strip when wrapping the insulating film, and the assembly process being difficult to carry out, making the assembly process more stable and reliable.

[0010] (2) The assembly fixture consists of a detachable upper base and a lower base. Compared with the integrated fixture, it is more convenient to remove the finished product and the production efficiency is higher. Attached Figure Description

[0011] Figure 1 This is a perspective view of the present utility model;

[0012] Figure 2 This is a top view of the present invention;

[0013] Figure 3 This is an exploded view of the working state of this utility model. Detailed Implementation

[0014] The PTC heating element assembly fixture of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] As shown in the figure, the PTC heating core assembly tooling of this utility model includes a detachable lower base 1 and an upper base 2, which are fixed together by bolts (not shown in the figure). The upper base 2 is machined with a through PTC sheet limiting groove 4 that matches the shape of the PTC sheet 3. At the front end of the PTC sheet limiting groove 4, there is a lower limit groove 6 that matches the shape of the extended electrode part of the lower electrode strip 5 and an upper limit groove 8 that matches the shape of the extended electrode part of the upper electrode strip 7. At the rear end of the PTC sheet limiting groove 4, there is an electrode strip tail limiting groove 9 that matches the shape of the main body of the lower electrode strip 5.

[0016] The central axes of each limiting groove in the width direction coincide, forming an assembly groove that matches the overall shape of the assembled PTC heating core. Since the PTC sheet 3 is 2mm wider than the main body of the lower electrode strip 5 and the upper electrode strip 7, the corresponding PTC sheet limiting groove 4 is also 2cm wider than the electrode strip tail limiting groove 9, that is, 1mm wider on each side.

[0017] In use, first apply adhesive to the lower electrode strip 5 and insert it into the assembly groove. Under the limiting action of the lower limit groove 6 and the limiting groove 9 at the tail of the electrode strip, the position of the lower electrode strip 5 remains fixed. Then, insert the PTC sheet 3 into the assembly groove. Under the limiting action of the PTC sheet limiting groove 4, the PTC sheet 3 is placed in the center on the lower electrode strip 5, bonded and fixed with it, avoiding the risk of the insulating film being torn by the edges of the electrode strip when wrapping the insulating film due to misalignment, and the assembly process being difficult. Finally, apply adhesive to the upper electrode strip 7, insert it into the assembly groove, and press to strengthen the adhesion between the layers. After the adhesive has cured, the upper base 1 and the lower base 2 can be removed, and the bonded and assembled PTC heating core can be taken out and sent to the subsequent processing station.

[0018] Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A PTC heating element assembly fixture, characterized in that: The device includes a lower base (1), on which a detachable upper base (2) is provided via a connector. The upper base (2) has a through PTC sheet limiting groove (4) that matches the shape of the PTC sheet (3). The front end of the PTC sheet limiting groove (4) has a lower limit groove (6) that matches the shape of the extended electrode portion of the lower electrode strip (5) and an upper limit groove (8) that matches the shape of the extended electrode portion of the upper electrode strip (7). The rear end of the PTC sheet limiting groove (4) has an electrode strip tail limiting groove (9) that matches the shape of the main body portion of the lower electrode strip (5).

2. The PTC heating element assembly fixture according to claim 1, characterized in that: The central axis of the PTC sheet limiting groove (4) and the electrode strip tail limiting groove (9) coincides in the width direction.

3. The PTC heating element assembly fixture according to claim 2, characterized in that: The width of the PTC sheet limiting groove (4) is greater than the width of the electrode strip tail limiting groove (9).

4. The PTC heating element assembly fixture according to claim 3, characterized in that: The width of the PTC sheet limiting groove (4) is 2cm greater than the electrode strip tail limiting groove (9).

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