Weighing junction box with good sealing performance
The weighing junction box, made of stainless steel and featuring a double-sealed structure, solves the problem of moisture absorption in humid environments, achieving excellent sealing performance and extended component lifespan.
Patent Information
- Application Number
- CN202520249955.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-02-17
AI Technical Summary
The junction boxes of existing electronic truck scales are susceptible to moisture ingress in humid environments, which can cause electronic components to become damp and shorten their service life.
The bottom shell and top cover are made of stainless steel and are fixed with bolts. The top cover has a positioning groove and a second sealing gasket, and the bottom shell has a first sealing gasket on the side, forming a double sealing structure to isolate water vapor.
The junction box is completely sealed, keeping the electronic components in a dry environment and extending their service life.
Smart Images
Figure CN223871998U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of junction boxes, and in particular to a weighing junction box with good sealing performance. Background Technology
[0002] The weighing junction box is an important component for adjusting the balance of electronic scales. Its main function is to collect signals from multiple sensors and adjust the angle difference. Because the sensitivity of each weighing sensor is not consistent, the potentiometer (adjustable resistor) of the junction box is adjusted to make the sensitivity of each weighing sensor approximately the same, thereby ensuring that all corners of the entire scale are balanced.
[0003] In actual use, the junction boxes used for electronic truck scales are generally built into the bottom of the electronic truck scale, which is in a humid environment. Moisture can easily enter the junction box, causing the internal electronic components to become damp and shortening their service life.
[0004] Therefore, it is urgent to improve the structure of the junction box to achieve better sealing performance. Utility Model Content
[0005] The purpose of this application is to provide a weighing junction box with good sealing performance to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this application provides a weighing junction box with good sealing performance, using the following technical solution:
[0007] A weighing junction box with good sealing performance includes a bottom shell and a top cover. The top cover is fixed to the bottom shell by bolts. The bottom shell has an annular frame on its periphery. A first sealing gasket is provided on the surface of the annular frame. The opening edge of the top cover can abut against the first sealing gasket. A positioning groove is provided on the inner wall of the top cover at a position corresponding to the opening edge of the bottom shell. A second sealing gasket is matched in the positioning groove. The opening edge of the bottom shell can abut against the second sealing gasket.
[0008] The annular frame is integrally formed with the bottom shell, and an annular groove is formed on the surface of the annular frame. The cross-section of the first sealing gasket is T-shaped, and the first sealing gasket is fitted and installed on the annular frame.
[0009] Preferably, for ease of assembly, the positioning groove has rounded corners at the inner edge facing the bottom shell.
[0010] The bottom shell has multiple wiring holes on its side, and waterproof wiring terminals are sealed and installed in the wiring holes.
[0011] Preferably, in order to ensure that the first sealing gasket can achieve a good sealing effect, the open end face of the top cover can be matched and pressed against the annular frame.
[0012] Both the top cover and the bottom shell are made of stainless steel.
[0013] In summary, this application includes at least one of the following beneficial technical effects: the weighing junction box with good sealing performance has a positioning groove and a second sealing gasket added inside the top cover. When the top cover is fixed to the bottom shell, the opening edge of the bottom of the top cover can abut against the first sealing gasket on the side of the bottom shell to form a first seal, while the opening edge of the top of the bottom shell abuts against the second sealing gasket in the positioning groove of the top cover to form a second seal. The two seals can achieve a complete sealing effect, thereby ensuring that the electronic components inside the junction box are in a relatively dry environment. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.
[0015] Figure 2 This is an exploded structural diagram of an embodiment of this application.
[0016] Figure 3 This is a schematic diagram illustrating the structure of the top cover in an embodiment of this application.
[0017] Explanation of reference numerals in the attached drawings: 1. Bottom shell; 11. Annular frame; 111. Annular groove; 2. Top cover; 21. Positioning groove; 3. Bolt; 4. First sealing gasket; 5. Second sealing gasket; 6. Waterproof terminal block. Detailed Implementation
[0018] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.
[0019] This application discloses a weighing junction box with good sealing performance, referring to... Figure 1-3 The device includes a bottom shell 1 and a top cover 2, both of which are made of stainless steel. The top cover 2 and the bottom shell 1 are fixed together by bolts 3. The bottom shell 1 has an annular frame 11 around its periphery, and a first sealing gasket 4 is provided on the surface of the annular frame 11. The opening edge of the top cover 2 can abut against the first sealing gasket 4. A positioning groove 21 is provided on the inner wall of the top cover 2 at the position corresponding to the opening edge of the bottom shell 1. A second sealing gasket 5 is provided in the positioning groove 21. The opening edge of the bottom shell 1 can abut against the second sealing gasket 5. The inner edge of the positioning groove 21 facing the bottom shell 1 is rounded.
[0020] Reference Figure 2 The annular frame 11 is integrally formed with the bottom shell 1. An annular groove 111 is provided on the surface of the annular frame 11. The cross-section of the first sealing gasket 4 is T-shaped. The first sealing gasket 4 is fitted and installed on the annular frame 11. The opening end face of the top cover 2 can be fitted and pressed onto the annular frame 11.
[0021] Reference Figure 1-2The bottom shell 1 has multiple wiring holes on its side, and waterproof wiring terminals 6 are sealed and installed inside the wiring holes.
[0022] The implementation principle of a weighing junction box with good sealing performance in this application embodiment is as follows:
[0023] The top cover 2 is fixed to the bottom shell 1. The opening edge at the bottom of the top cover 2 can abut against the first sealing gasket 4 on the side of the bottom shell 1 to form the first seal. The opening edge at the top of the bottom shell 1 abuts against the second sealing gasket 5 in the positioning groove 21 of the top cover 2 to form the second seal. This achieves a complete seal and prevents moisture from entering the junction box.
[0024] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A weighing junction box with good sealing performance, comprising a bottom shell (1) and a top cover (2), wherein the top cover (2) is fixed to the bottom shell (1) by bolts (3), characterized in that: The bottom shell (1) has an annular frame (11) around its periphery. A first sealing gasket (4) is provided on the surface of the annular frame (11). The opening edge of the top cover (2) can abut against the first sealing gasket (4). A positioning groove (21) is provided on the inner wall of the top cover (2) at the position corresponding to the opening edge of the bottom shell (1). A second sealing gasket (5) is provided in the positioning groove (21). The opening edge of the bottom shell (1) can abut against the second sealing gasket (5).
2. The weighing junction box with good sealing performance according to claim 1, characterized in that: The annular frame (11) is integrally formed with the bottom shell (1). An annular groove (111) is provided on the surface of the annular frame (11). The cross-section of the first sealing gasket (4) is T-shaped. The first sealing gasket (4) is fitted and installed on the annular frame (11).
3. The weighing junction box with good sealing performance according to claim 2, characterized in that: The positioning groove (21) has a rounded corner at the inner edge facing the bottom shell (1).
4. The weighing junction box with good sealing performance according to claim 1, characterized in that: The bottom shell (1) has multiple wiring holes on its side, and waterproof wiring terminals (6) are sealed and installed in the wiring holes.
5. The weighing junction box with good sealing performance according to claim 1, characterized in that: The open end face of the top cover (2) can be pressed against the annular frame (11).
6. The weighing junction box with good sealing performance according to claim 1, characterized in that: Both the top cover (2) and the bottom shell (1) are made of stainless steel.