Lightweight sensor head structure

Abstract

The utility model provides a lightweight sensor head structure, which comprises a plastic head and a metal insert, the metal insert is provided with latches, the metal insert is embedded in the plastic head, the latches are located on the outer side of the plastic head, and a clamping groove used for being connected with the outside is arranged between the plastic head and the latches in a surrounding mode. According to the light-weight sensor head structure, the metal insert is embedded in the plastic head in an embedding manner, and the latches arranged on the metal insert are exposed outside the plastic head, so that the latches are mounted on the plastic head, the weight of the plastic head can be reduced, the strength of the plastic head can be improved, and the light-weight sensor head structure can be used for manufacturing a sensor. When the sensor and a box body (an oil tank or a urea tank) are assembled, sealing failure and leakage of a box body opening due to the fact that a bayonet of the box body scratches the installation position of the plastic head are prevented, meanwhile, the situation that the installation position of the plastic head is abraded after a vehicle runs for a long time due to insufficient assembling strength is prevented, and sealing failure and leakage of the box body opening are further avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level sensors, in particular to a lightweight sensor head structure. Background Art

[0002] In existing urea tanks or fuel tanks, a sensor for detecting the liquid level height is generally provided. For example, Chinese Patent CN202153143U discloses a liquid level sensor and its installation and fixing structure. The liquid level sensor sleeved a toothed ring at the lower end of the fixing seat of the main body, and the toothed ring was installed and fixed on the fixing seat of the main body by using a buckle and a buckle hole. At the same time, a clamping groove was formed by enclosing between the flanging of the toothed ring and the fixing seat, so that the clamping block in the installation opening of the urea tank was embedded in the clamping groove as the main body rotated, realizing the connection and installation of the liquid level sensor and the urea tank. However, the toothed ring is a whole metal ring. The application of a whole metal ring not only increases the material cost due to more materials used, but also increases the weight of the fixing seat made of plastic as a whole. Therefore, the weight of the entire sensor head increases, which is not conducive to the realization of vehicle lightweight.

[0003] Therefore, it is necessary to provide at least a lightweight sensor head structure that can reduce weight and increase strength. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a lightweight sensor head structure that can reduce weight and increase strength.

[0005] To achieve the above purpose, the utility model provides a lightweight sensor head structure, including a plastic head and a metal insert. The metal insert is provided with a clamping tooth, the metal insert is embedded in the plastic head, and the clamping tooth is located outside the plastic head. A clamping groove for external connection is enclosed between the plastic head and the clamping tooth.

[0006] Preferably, a plurality of the metal inserts are embedded in the plastic head at intervals along the circumferential direction of the plastic head.

[0007] Preferably, the metal insert is integrally bent to form the clamping tooth.

[0008] Preferably, a fitting portion is convexly provided on the plastic head, and the clamping tooth is attached to the fitting portion.

[0009] Preferably, the clamping tooth includes a horizontal section, an arc section and a vertical section. The horizontal section is connected to the metal insert, one end of the arc section is connected to the horizontal section, the other end of the arc section is connected to the vertical section, and the horizontal section, the arc section and the vertical section are respectively attached to the fitting portion.

[0010] Preferably, the fitting portion has a limiting post located at one end of the horizontal section.

[0011] Preferably, the teeth are located at the end or middle position of the metal insert.

[0012] Preferably, a plurality of pipelines are provided on the plastic head.

[0013] Preferably, an arc notch for adapting to the outer edge of the opening of the pipeline is provided on the metal insert.

[0014] Preferably, the lightweight sensor head structure further includes a positioning pin, and the positioning pin is fixed on the metal insert and embedded in the plastic head.

[0015] Compared with the prior art, the lightweight sensor head structure of the present invention uses an inlay method to embed the metal insert in the plastic head, and the teeth provided on the metal insert are exposed outside the plastic head, so that the teeth are installed on the plastic head, which can reduce the weight of the plastic head and increase the strength of the plastic head. When the sensor is assembled with the box body (fuel tank or urea tank), it can prevent the sealing failure and leakage of the box body due to the scratching of the installation position of the plastic head by the box body bayonet, and at the same time, prevent the wear of the installation position of the plastic head after the vehicle has been running for a long time due to insufficient assembly strength, and further avoid the sealing failure and leakage of the box body. Description of the Drawings

[0016] Figure 1 is a three-dimensional structure diagram of the lightweight sensor head structure of the present invention.

[0017] Figure 2 is an exploded view of the lightweight sensor head structure of the present invention. Detailed Description of the Invention

[0018] In order to describe the technical content and structural features of the present invention in detail, the following further description is made in conjunction with the embodiments and the accompanying drawings.

[0019] Please refer to Figure 1 and Figure 2 , the lightweight sensor head structure 100 of the present invention includes a plastic head 1 and a metal insert 2. The metal insert 2 is provided with teeth 21. The metal insert 2 is embedded in the plastic head 1, and the teeth 21 are located outside the plastic head 1. A slot 3 for external connection is provided around the plastic head 1 and the teeth 21. The slot 3 can be used for installation and cooperation with an external box body.

[0020] In the present utility model, the metal insert 2 is embedded in the plastic head 1, so that the locking teeth 21 are installed on the plastic head 1, thereby reducing the weight of the plastic head 1 and increasing the strength of the plastic head 1. When the sensor is assembled with the box body (fuel tank or urea tank), it can prevent the sealing failure and leakage of the box body due to the scratching of the installation position of the plastic head 1 by the box body bayonet. At the same time, it can prevent the wear of the installation position of the plastic head 1 after the vehicle has been running for a long time due to insufficient assembly strength, and further avoid the sealing failure and leakage of the box body mouth.

[0021] Please continue to refer to Figure 1 and Figure 2 In an embodiment, a plurality of metal inserts 2 are spacedly embedded in the plastic head 1 along the circumferential direction of the plastic head 1. For example, the number of metal inserts 2 can be one, two, three, four, etc. By embedding the metal inserts 2 in the plastic head 1 at intervals along the circumferential direction of the plastic head 1, the locking teeth 21 on each metal insert 2 are arranged at intervals on the plastic head 1, which can not only ensure the connection strength between the sensor and the box body, but also ensure a better assembly and matching effect between the two. And there is no need to wrap the entire metal ring at the bottom of the plastic head 1 as in the prior art, which can effectively reduce the material consumption and lower the material cost.

[0022] Please refer to Figure 2 In an embodiment, the metal insert 2 is integrally bent to form the locking teeth 21, but not limited thereto.

[0023] Please refer to Figure 1 and Figure 2 In an embodiment, a fitting portion 11 protrudes from the plastic head 1, and the locking teeth 21 are fitted on the fitting portion 11. Further, the locking teeth 21 include a horizontal section 211, an arc section 212 and a vertical section 213. The horizontal section 211 is connected to the metal insert 2. One end of the arc section 212 is connected to the horizontal section 211, and the other end of the arc section 212 is connected to the vertical section 213. The horizontal section 211, the arc section 212 and the vertical section 213 are respectively fitted on the fitting portion 11. Further still, the fitting portion 11 has a limiting post 12 at one end of the horizontal section 211. The limiting post 12 can be used for limiting when the clamping block of the box body is engaged with the clamping groove 3. When the clamping block of the box body abuts against the limiting post 12, it means that the installation is in place.

[0024] Please refer to Figure 2 The locking teeth 21 are located at the end or middle position of the metal insert 2. Among them, when the number of metal inserts 2 is multiple, the locking teeth 21 on some metal inserts 2 can be arranged at the end position of the metal insert 2, and the locking teeth 21 on some metal inserts 2 can be arranged at the middle position of the metal insert 2, but not limited thereto.

[0025] Please continue to refer to Figure 2, in one embodiment, a plurality of pipelines 13 are provided on the plastic head 1. Further, an arc notch 22 for adapting to the outer edge of the opening of the pipeline 13 is provided on the metal insert 2. By providing the arc notch 22 on the metal insert 2, the position of the pipeline 13 of the plastic head 1 is avoided, and the outer edge of the opening of the pipeline 13 is adapted.

[0026] Please refer to again Figure 2 , the lightweight sensor head structure 100 of the present invention further includes a positioning pin 4, and the positioning pin 4 is fixed on the metal insert 2 and embedded in the plastic head 1. By providing the positioning pin 4 on the metal insert 2, the metal insert 2 can be stably positioned and embedded in the plastic head 1. Specifically, the positioning pin 4 can be connected to the metal insert 2 by welding.

[0027] Combined with Figure 1 and Figure 2 , the specific assembly process of the lightweight sensor head structure 100 of the present invention is as follows:

[0028] First, the positioning pin 4 and the metal insert 2 are welded together, and then the metal insert 2 is placed in the injection mold and injection-molded with the plastic head 1 to form the lightweight sensor head structure 100 of the present invention. Among them, the metal insert 2 is completely embedded in the plastic head 1 while the engaging teeth 21 are located outside the plastic head 1; the number of metal inserts 2 placed can be one or more.

[0029] In summary, the lightweight sensor head structure 100 of the present invention uses an inlay method to embed the metal insert 2 in the plastic head 1, and the engaging teeth 21 provided on the metal insert 2 are exposed outside the plastic head 1, so that the engaging teeth 21 are installed on the plastic head 1, thereby reducing the weight of the plastic head 1 and increasing the strength of the plastic head 1. When the sensor is assembled with the box body (fuel tank or urea tank), it can prevent the sealing failure and leakage of the box body due to the scratching of the installation position of the plastic head 1 by the box body bayonet, and at the same time, prevent the wear of the installation position of the plastic head 1 after the vehicle has traveled for a long time due to insufficient assembly strength, and further avoid the sealing failure and leakage of the box body. And there is no need to wrap the entire metal ring at the bottom of the plastic head 1 as in the prior art, which can effectively reduce the material consumption and lower the material cost.

[0030] The above-disclosed are only the preferred examples of the present invention, and the scope of the rights of the present invention cannot be limited by this. Therefore, all equivalent changes made according to the claims of the present invention fall within the scope covered by the present invention.

Claims

1. A lightweight sensor head structure, characterized in that, It includes a plastic head and a metal insert. The metal insert is provided with locking teeth, the metal insert is embedded in the plastic head, and the locking teeth are located outside the plastic head. A clamping groove for connecting with the outside is arranged around between the plastic head and the locking teeth.

2. The lightweight sensor head structure according to claim 1, wherein, A plurality of the metal inserts are embedded in the plastic head at intervals along the circumferential direction of the plastic head.

3. The lightweight sensor head structure according to claim 1, characterized in that, The metal insert is integrally bent to form the locking teeth.

4. The lightweight sensor head structure according to claim 1, characterized in that, A fitting portion is protruded on the plastic head, and the locking teeth are fitted on the fitting portion.

5. The lightweight sensor head structure according to claim 4, characterized in that, The locking teeth include a horizontal section, an arc section and a vertical section. The horizontal section is connected to the metal insert. One end of the arc section is connected to the horizontal section, and the other end of the arc section is connected to the vertical section. The horizontal section, the arc section and the vertical section are respectively fitted on the fitting portion.

6. The lightweight sensor head structure according to claim 5, wherein, The fitting portion has a limiting post at one end of the horizontal section.

7. The lightweight sensor head structure according to claim 1, wherein The locking teeth are located at the end or the middle position of the metal insert.

8. The lightweight sensor head structure according to claim 1, characterized in that A plurality of pipelines are arranged on the plastic head.

9. The lightweight sensor head structure according to claim 8, characterized in that, The metal insert is provided with an arc notch for adapting to the outer edge of the opening of the pipeline.

10. The lightweight sensor head structure according to claim 1, wherein It further includes a positioning pin. The positioning pin is fixed on the metal insert and embedded in the plastic head.

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