Wind-warming PTC heater wire harness limiting structure

Abstract

This utility model discloses a wiring harness limiting structure for a PTC heater with ambient air heating. It includes a housing and a wiring harness integration tube with multiple annular grooves; the housing has a separate wiring harness slot; the wiring harness slot has multiple annular protrusions matching the shape of the annular grooves. The advantages are: the wiring harness integration tube has multiple annular grooves, and the wiring harness slot has corresponding annular protrusions. After the wiring harness is fixed in the integration tube, the grooves and protrusions cooperate to limit the wiring harness integration tube, which can enhance the limiting and sealing effect of the wiring harness, while avoiding unpleasant odors and reducing the risk of abnormal noise, thereby improving the user experience; the wiring harness slot is designed as a separate upper and lower section, making the product easier to disassemble and assemble, while further improving the limiting effect of the wiring harness integration tube; the wiring harness integration tube has an extension section extending outward from the wiring harness slot, which can strengthen the protection of the transition section from dispersed to integrated wiring harness and improve its bending resistance.

Description

Technical Field

[0001] This utility model relates to a PTC heater, specifically a wiring harness limiting structure for a wind-heated PTC heater. Background Technology

[0002] Currently, the traditional method for limiting the wiring harness of PTC heaters with ambient air heating involves placing a silicone ring around the wire and then fixing the silicone ring in a groove in the base. The portion of the wiring harness extending beyond the base is then wrapped with electrical tape. To ensure a tight seal, the silicone ring and the wire must be interference-fitted, which is difficult to assemble and results in low production efficiency. Furthermore, the use of silicone rings and tape poses a high risk of unpleasant odors and abnormal noises, potentially affecting the user's driving experience. In addition, this method also has a certain impact on the aesthetics of the product. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a limiting structure for the wiring harness of a PTC heater with good limiting and sealing effects.

[0004] To solve the above-mentioned technical problems, the present invention provides a wiring harness limiting structure for a PTC heater with a wind-heated system, comprising a housing for mounting the heating assembly and a wiring harness integration tube with multiple annular grooves; the housing includes a lower base and an upper base connected by a snap-fit ​​method, and the housing is provided with a split wiring harness slot for the wiring harness to pass through, the lower half of the wiring harness slot being disposed on the lower base and the upper half being disposed on the upper base; the wiring harness slot is provided with multiple annular protrusions that match the shape of the annular grooves, and the wiring harness integration tube is engaged into the wiring harness slot and limited by the cooperation of the annular grooves and the annular protrusions.

[0005] The wire harness integration tube has an extension section extending outward from the wire harness slot, and the extension section has the same annular groove as the main body.

[0006] The lower base is provided with multiple buckles, and the upper base is provided with multiple protrusions at corresponding positions for engaging the buckles.

[0007] The number of the buckles and the number of the protrusions are both six.

[0008] The upper base is provided with a limiting piece for limiting the position of the heating assembly.

[0009] The upper base is provided with a wire-blocking block for separating the wire harness from the heating assembly.

[0010] The wire harness integration tube is a corrugated tube.

[0011] The advantages of this utility model are: (1) The wire harness integration tube has multiple annular grooves and multiple annular protrusions on the wire harness slot. After the wire harness is fixed in the wire harness integration tube, the grooves and protrusions cooperate to limit the wire harness integration tube. Compared with the traditional method of using silicone rings and tape to directly fix the wire harness, this method can enhance the limiting and sealing effect of the wire harness, while avoiding unpleasant odors and reducing the risk of abnormal noise, thereby improving the user experience. (2) The wire harness slot is designed as a split type, which allows the housing to be snapped shut after the wire harness integration tube is inserted during assembly. Compared with the traditional method of first leading out the wire harness and then fixing it, this structure makes the product easier to disassemble and assemble, and further improves the limiting effect on the wire harness integration tube. (3) The wire harness integration tube is provided with an extension section outside the wire harness slot, and an annular groove with the same shape as the main body is opened on the extension section, which can strengthen the protection of the transition section of the wire harness from dispersion to integration and improve its bending resistance. (4) Multiple limiting plates are provided on the upper base to further enhance the limiting effect on the housing heating assembly; (5) A wire block is provided on the upper base to separate the wire harness connected to the heating assembly, making the internal wiring of the product more aesthetically pleasing. Attached Figure Description

[0012] Figure 1 This is a perspective view of the present utility model; Figure 2 This is an exploded top-down view of the present invention; Figure 3 for Figure 2 Enlarged image; Figure 4 This is an exploded view from an upward angle after the wire harness has been removed from this utility model. Detailed Implementation

[0013] The following detailed description of the wiring harness limiting structure of the PTC heater of this utility model, in conjunction with the accompanying drawings and specific embodiments, will be provided in further detail.

[0014] As shown in the figure, the wiring harness limiting structure of this utility model for a PTC heater includes a housing 1 for mounting the heating assembly and a wiring harness integration tube 3 for fixing the wiring harness. The housing 1 includes a lower base 6 and an upper base 7 connected by a snap-fit ​​method. Six snap fasteners 8 are symmetrically arranged on the four sides of the lower base 6, and six protrusions 9 for engaging the snap fasteners 8 are arranged at corresponding positions on the upper base 7. A heating assembly mounting groove is opened in the middle of the lower base 6 and the upper base 7. Multiple limiting pieces 10 for limiting the heating assembly are provided on one short side of the upper base 7, and square notches are opened on them for locking the rear corners of the heating assembly. A wire-blocking block 11 is provided on the other short side to separate the wiring harness connected to the front of the heating assembly from the heating assembly itself, making the wiring of the equipment more aesthetically pleasing.

[0015] The wire harness integration tube 3 passes through and is fixedly connected to the heating assembly. Multiple annular grooves 2 are evenly spaced on the outside. For ease of application, in this embodiment, the wire harness integration tube 3 uses a conventional corrugated pipe, which combines good strength and bending performance. A split wire harness slot 4 is provided on the side of the housing 1 near the front of the heating assembly (i.e., the side of the wire block 11) for the wire harness to pass through. The lower half of the wire harness slot 4 is located on the lower base 6, and the upper half is located on the upper base 7. Multiple annular protrusions 5, matching the shape of the annular grooves 2, are provided inside. The wire harness integration tube 3 also extends outward from the wire harness slot 4, and the extended section has the same annular grooves 2 as the main body, used to strengthen the protection of the transition section from dispersed to integrated wire harnesses and improve its bending resistance.

[0016] During assembly, firstly, the wire harness is fabricated and integrated into the wire harness integration tube 3 and connected to the heating assembly. Then, the heating assembly is placed in the heating assembly mounting slot of the lower base 6. After the wire harness is positioned by the wire stop block 11, the wire harness integration tube 3 is inserted into the wire harness slot 4 by the cooperation of the annular groove 2 and the annular protrusion 5 to limit its position. Finally, the upper base 7 is fastened, and the heating assembly is limited by the limiting piece 10. Screws are screwed in at each corner for further fixation, thus completing the assembly of the PTC heater.

[0017] 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 limiting structure for a PTC heater wiring harness, characterized in that: The device includes a housing (1) for mounting a heating assembly and a wire harness integration tube (3) with multiple annular grooves (2); the housing (1) includes a lower base (6) and an upper base (7) connected by a snap-fit ​​method, and the housing (1) is provided with a split wire harness slot (4) for the wire harness to pass through. The lower half of the wire harness slot (4) is provided on the lower base (6) and the upper half is provided on the upper base (7); the wire harness slot (4) is provided with multiple annular protrusions (5) that match the shape of the annular grooves (2), and the wire harness integration tube (3) is inserted into the wire harness slot (4) and limited by the cooperation between the annular grooves (2) and the annular protrusions (5).

2. The wiring harness limiting structure for the PTC heater according to claim 1, characterized in that: The wire harness integration tube (3) has an extension section extending outward from the wire harness slot (4), and the extension section has the same annular groove (2) as the main body.

3. The wiring harness limiting structure for the PTC heater according to claim 1, characterized in that: The lower base (6) is provided with a plurality of buckles (8), and the upper base (7) is provided with a plurality of protrusions (9) for engaging the buckles (8) at the corresponding positions.

4. The wiring harness limiting structure for the PTC heater according to claim 2, characterized in that: The number of buckles (8) and protrusions (9) is six.

5. The wiring harness limiting structure for the PTC heater according to claim 2, characterized in that: The upper base (7) is provided with a limiting piece (10) for limiting the heating assembly.

6. The wiring harness limiting structure for the PTC heater according to claim 2, characterized in that: The upper base (7) is provided with a wire-blocking block (11) for separating the wire harness from the heating assembly.

7. The wiring harness limiting structure for a PTC heater according to any one of claims 1-6, characterized in that: The wire harness integration tube (3) is a corrugated tube.

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