An instrument with a waterproof structure

Abstract

This utility model discloses an instrument with a waterproof structure, including an instrument body and a back cover fixed to the back of the instrument body; a rectangular cover groove on the back of the back cover, a U-shaped groove on the inner wall of the rectangular cover groove, a rectangular through-hole in the U-shaped groove, and a semi-circular wire harness notch on the left inner wall of the rectangular through-hole; a plastic waterproof cover installed in the rectangular cover groove, an integrated U-shaped insert on the top surface of the plastic waterproof cover, and a semi-circular wire harness notch on the left side of the U-shaped insert; this application eliminates the complex process of traditional injection molding and coating waterproof covers that require custom molds for different wire harnesses by adding a plastic waterproof cover that can be adapted to various wire harness outer diameters to the instrument, greatly reducing mold development costs and production preparation time. At the same time, sealing and waterproofing can be completed by simply applying a ring of waterproof glue around the cover, which is simple and easy to operate and has low requirements for the production environment and operator skills.

Description

Technical Field

[0001] This utility model belongs to the field of instrument technology, specifically relating to an instrument with a waterproof structure. Background Technology

[0002] In many fields such as industrial automation, automotive electronics, and smart homes, instruments are key monitoring and control devices. The stability and reliability of their performance directly affect the normal operation of the entire system. Among them, waterproof performance is one of the important indicators for measuring the quality of instruments. Especially in humid, watery, or liquid-corrosion environments, a good waterproof structure can effectively prevent moisture from entering the instrument and avoid instrument failures caused by internal circuit short circuits, component damage, etc., thereby extending the service life of the instrument and ensuring its accurate and stable operation.

[0003] Currently, the traditional method for waterproofing the wiring harness in commonly available instruments involves injection molding a waterproof cover over heat-shrink tubing. This process requires custom-made waterproof covers for different specifications of wiring harnesses. Since the outer diameter and shape of each wiring harness may vary, multiple different molds need to be designed and manufactured, undoubtedly increasing the cost and time of mold development. Furthermore, after the injection-molded waterproof cover is completed, a waterproof silicone ring needs to be installed using screws to further enhance the waterproof performance. Installing the silicone ring requires precisely machining screw holes on both the instrument housing and the waterproof cover, ensuring the screws are tightened to the appropriate tightness. Excessive tightening may deform or damage the silicone ring, while insufficient tightening will prevent proper sealing. Additionally, the silicone ring is prone to aging and deformation over long-term use, leading to a decrease in waterproof performance. In summary, existing waterproof structures in instruments, especially for the wiring harness, suffer from cumbersome processes and high costs, failing to meet market demands for low-cost, high-efficiency production and reliable waterproof performance. Therefore, this invention proposes an instrument with a waterproof structure. Utility Model Content

[0004] The purpose of this invention is to provide an instrument with a waterproof structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an instrument with a waterproof structure, comprising...

[0006] The instrument body and the back cover fixed to the back of the instrument body;

[0007] And a rectangular cover groove on the back of the back cover, a U-shaped groove on the inner wall of the rectangular cover groove, a rectangular through-hole through the U-shaped groove, and a semi-circular wire harness notch on the inner left side of the rectangular through-hole.

[0008] And a plastic waterproof cover installed in a rectangular cover groove, an integrated U-shaped insert on the top surface of the plastic waterproof cover, and a semi-circular wire harness notch on the left side of the U-shaped insert;

[0009] A wire harness is provided on the inner side of the instrument body, and the wire harness extends through a circular hole formed by the combination of a semi-circular wire harness notch one and a semi-circular wire harness notch two to the outer side of the back cover.

[0010] Preferably, it also includes a locking and limiting structure, which is disposed between the U-shaped insert and the rectangular opening.

[0011] Preferably, the locking and limiting structure includes two integrated L-shaped locking feet symmetrically arranged on the top surface of the U-shaped insert, and the inner wall of the rectangular opening has two symmetrical side locking notches for the L-shaped locking feet to pass through.

[0012] Preferably, the inner side of the side card notch is provided with an inclined guide groove, and the inclined guide groove and the instrument body are an integral structure.

[0013] Preferably, the U-shaped groove is adapted to the U-shaped insert.

[0014] Preferably, the plastic waterproof cover, U-shaped insert, and L-shaped locking foot are an integrated structure.

[0015] Preferably, it also includes a bonding structure, which includes multiple adhesive grooves formed on the surface of the plastic waterproof cover.

[0016] Preferably, the inner wall of the glue tank has two symmetrically formed side limiting grooves, and the cross-section of the side limiting grooves is a right triangle.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: The instrument with a waterproof structure proposed in this application eliminates the complex process of traditional injection molding and encapsulation of waterproof covers that require custom molds for different wire harnesses by adding a plastic waterproof cover that can be adapted to various wire harness outer diameters. This greatly reduces mold development costs and production preparation time. At the same time, waterproof sealing can be achieved simply by applying a ring of waterproof adhesive around the cover. The operation is simple and easy, with low requirements for the production environment and operator skills, effectively reducing production steps and operational difficulty, and significantly improving production efficiency. In addition, this waterproof structure avoids the unstable waterproof performance caused by aging and deformation problems that may occur when using waterproof silicone rings. It can provide reliable and durable waterproof protection for the instrument, reducing overall production costs and enhancing the product's competitiveness in the market while ensuring the instrument's waterproof performance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2This is a schematic diagram of the instrument structure after the plastic waterproof cover of this utility model has been removed;

[0020] Figure 3 This utility model Figure 1 A magnified view of a portion of region A in the middle;

[0021] Figure 4 This utility model Figure 2 A magnified view of a portion of region B in the middle;

[0022] Figure 5 This utility model Figure 4 A magnified view of a portion of region C in the middle;

[0023] Figure 6 This is a schematic diagram of the structure of the plastic waterproof cover of this utility model;

[0024] Figure 7 This is a structural schematic diagram of the plastic waterproof cover of this utility model from another perspective;

[0025] Figure 8 This utility model Figure 7 A magnified view of a portion of region D in the middle;

[0026] Figure 9 This is a cross-sectional view of the glue tank of this utility model;

[0027] In the diagram: 1. Instrument body; 2. Rear cover; 3. Plastic waterproof cover; 31. U-shaped insert; 32. L-shaped clip; 33. Glue groove; 331. Side limiting groove; 34. Semi-circular wire harness notch two; 4. Wire harness body; 5. Rectangular cover groove; 51. U-shaped insert; 52. Rectangular through-hole; 53. Side clip notch; 531. Inclined guide groove; 54. Semi-circular wire harness notch one. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1

[0030] Please see Figures 1 to 7 This is the first embodiment of the present invention, which provides the following technical solution: an instrument with a waterproof structure, including...

[0031] Instrument body 1 and back cover 2 fixed to the back of instrument body 1;

[0032] And a rectangular cover groove 5 on the back of the rear cover 2, a U-shaped groove 51 on the inner wall of the rectangular cover groove 5, a rectangular through-hole 52 through the U-shaped groove 51, and a semi-circular wire harness notch 54 on the inner left side of the rectangular through-hole 52.

[0033] And a plastic waterproof cover 3 installed in a rectangular cover groove 5, an integrated U-shaped insert 31 set on the top surface of the plastic waterproof cover 3, and a semi-circular wire harness notch 34 opened on the left side of the U-shaped insert 31.

[0034] A wire harness 4 is provided on the inner side of the instrument body 1, and the wire harness 4 extends through a circular hole formed by the combination of a semi-circular wire harness notch 1 54 and a semi-circular wire harness notch 2 34 to the outer side of the rear cover 2.

[0035] In this embodiment, preferably, a locking and limiting structure is also included. The locking and limiting structure is disposed between the U-shaped insert 31 and the rectangular opening 52, so that the plastic waterproof cover 3 can be locked and limited after being pushed into the inner side of the rectangular cover groove 5.

[0036] In this embodiment, preferably, the locking and limiting structure includes two integrated L-shaped locking feet 32 ​​symmetrically arranged on the top surface of the U-shaped insert 31. The inner wall of the rectangular through-hole 52 is symmetrically provided with two side locking notches 53 for the L-shaped locking feet 32 ​​to pass through. In fact, after the plastic waterproof cover 3 is pushed into the rectangular cover groove 5, the U-shaped insert 31 will enter the U-shaped groove 51, and the L-shaped locking feet 32 ​​will pass through the side locking notches 53 to the inner side of the instrument body 1 to achieve locking and limiting of the plastic waterproof cover 3.

[0037] In this embodiment, preferably, the inner side of the side notch 53 is provided with an inclined guide groove 531, and the inclined guide groove 531 is an integral structure with the instrument body 1. The design of the inclined guide groove 531 makes the L-shaped locking foot 32 contact the inclined guide groove 531 first when it is pushed into the side notch 53, and deform under the guidance of the inclined guide groove 531, and finally pass through the side notch 53 so that the top of the L-shaped locking foot 32 is locked on the inner surface of the instrument body 1, thereby achieving stable positioning of the plastic waterproof cover 3.

[0038] In this embodiment, preferably, the U-shaped groove 51 is adapted to the U-shaped insert 31 so that the U-shaped insert 31 can fit more closely after entering the U-shaped groove 51.

[0039] In this embodiment, preferably, the plastic waterproof cover 3, the U-shaped insert 31 and the L-shaped clip 32 are an integral structure, all three of which are made of plastic material, so that the top of the L-shaped clip 32 will undergo a certain elastic deformation when it is squeezed.

[0040] In summary, when using this instrument, after the wiring harness 4 is led out to the outside of the rear cover 2, the wiring harness 4 is aligned with the semi-circular wiring harness notch 54. Then, the plastic waterproof cover 3 is pushed into the inside of the rectangular cover groove 5, so that the U-shaped insert 31 is embedded in the U-shaped groove 51, and the two L-shaped locking feet 32 ​​are respectively locked into the inside of the instrument body 1 through the two side locking notches 53. This quickly completes the locking and limiting of the plastic waterproof cover 3 after it is pushed into the rectangular cover groove 5. At this time, the semi-circular wiring harness notch 34 is also aligned with the wiring harness 4. This completes the initial sealing. At this point, apply a ring of waterproof adhesive around the gaps of the plastic waterproof cover 3 and the rectangular cover groove 5, and wait for the adhesive to solidify. This completes the sealing of the wire harness 4 exit point, which is simple and convenient. The design of the semi-circular wire harness notch 1 54 and semi-circular wire harness notch 2 34 can accommodate wire harnesses 4 with various outer wire diameters. Even when the outer wire diameter of the wire harness 4 is reduced, the sealing and waterproofing can still be completed by applying adhesive between the wire harness 4, the semi-circular wire harness notch 1 54 and the semi-circular wire harness notch 2 34.

[0041] Example 2

[0042] Please see Figures 1 to 9 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but differs in that it also includes a glue-fixing structure. The glue-fixing structure includes multiple glue grooves 33 formed on the surface of the plastic waterproof cover 3. Two side limiting grooves 331 are symmetrically formed on the inner wall of the glue grooves 33, and the cross-section of the side limiting grooves 331 is a right-angled triangle. When the waterproof glue is applied to the gaps around the plastic waterproof cover 3 and the rectangular cover groove 5, some of the waterproof glue will enter the glue grooves 33 and the side limiting grooves 331. After the waterproof glue solidifies, the waterproof glue in the glue grooves 33 and the side limiting grooves 331 will form an anchoring point, making the waterproof glue applied between the plastic waterproof cover 3 and the rectangular cover groove 5 more secure, less prone to delamination, and improving the stability of the glue application.

[0043] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An instrument with a waterproof structure, characterized by: include Instrument body (1) and back cover (2) fixed to the back of instrument body (1); And a rectangular cover groove (5) opened on the back of the back cover (2), a U-shaped groove (51) opened on the inner wall of the rectangular cover groove (5), a rectangular through-hole (52) opened in the U-shaped groove (51), and a semi-circular wire harness notch (54) opened on the inner wall of the left side of the rectangular through-hole (52). And a plastic waterproof cover (3) installed in the rectangular cover groove (5), an integrated U-shaped insert (31) set on the top surface of the plastic waterproof cover (3), and a semi-circular wire harness notch (34) opened on the left side of the U-shaped insert (31). The instrument body (1) is provided with a wire harness (4) on its inner side, and the wire harness (4) passes through the circular hole formed by the combination of the semi-circular wire harness notch one (54) and the semi-circular wire harness notch two (34) to the outer side of the back cover (2).

2. The instrument with waterproof structure according to claim 1, characterized in that: It also includes a locking and limiting structure, which is disposed between the U-shaped insert (31) and the rectangular opening (52).

3. The instrument with waterproof structure according to claim 2, characterized in that: The locking and limiting structure includes two integrated L-shaped locking feet (32) symmetrically arranged on the top surface of the U-shaped insert (31), and two side locking notches (53) symmetrically opened on the inner wall of the rectangular through-hole (52) for the L-shaped locking feet (32) to pass through.

4. The instrument with waterproof structure according to claim 3, characterized in that: The inner side of the side card notch (53) is provided with an inclined guide groove (531), and the inclined guide groove (531) and the instrument body (1) are an integral structure.

5. The instrument with waterproof structure according to claim 1, characterized in that: The U-shaped groove (51) is adapted to the U-shaped insert (31).

6. The instrument with waterproof structure according to claim 1, characterized in that: The plastic waterproof cover (3), U-shaped insert (31) and L-shaped clip (32) are an integrated structure.

7. The instrument with waterproof structure according to claim 1, characterized in that: It also includes a glue-fixing structure, which includes multiple glue grooves (33) formed on the surface of the plastic waterproof cover (3).

8. The instrument with waterproof structure according to claim 7, characterized in that: The inner wall of the glue tank (33) has two symmetrical side limiting grooves (331), and the cross section of the side limiting grooves (331) is a right triangle.

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