Shielding threading conduit for microwave oven

Abstract

A shielding threading guide pipe for a microwave oven comprises an inner pipe, the outer end of the inner pipe extends outwards to form a mounting pipe, the outer diameter of the mounting pipe is smaller than that of the inner pipe, and the outer end of the mounting pipe extends outwards to form a shielding pipe; the mounting hole is formed in the shielding plate, and the shielding pipe and the mounting pipe extend out of the shielding plate after being mounted in a penetrating manner; the outer sleeve is sleeved outside the shielding tube and the mounting tube, the inner hole wall of the outer sleeve is in interference fit connection with the outer wall of the mounting tube, and the inner tube and the outer tube are clamped and fixed at the inner end and the outer end of the shielding plate through the outer end face of the inner tube and the inner end face of the outer sleeve. The beneficial effects of the utility model are that through the structural optimization of the inner pipe, the installation pipe and the shielding pipe, the simple and convenient assembly of the assembly is realized. And particularly, the outer sleeve is in interference fit connection with the mounting tube and the shielding tube, so that the use of a traditional welding process is effectively avoided, the production process is simplified, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to a microwave oven accessory, in particular to a shielded wire threading conduit for a microwave oven. Background Art

[0002] In the design of modern microwave ovens, the application of shielded wire conduits is crucial, mainly used to protect against electromagnetic interference and improve the safety performance of microwave ovens. According to the prior art, shielded wire conduits usually include a shielding tube and a shielding plate, and the shielding tube needs to be fixedly connected to the shielding plate by welding. Although this method can meet the shielding requirements to a certain extent, its process is complicated and the cost is high.

[0003] In traditional microwave oven shielding systems, the shielding tube is usually made of metal materials, and its connection with the shielding plate is mainly completed by welding technology. This welding process not only requires special equipment and technicians to operate, but also the quality of the welding interface directly affects the overall shielding effect and the stability of the equipment. Incomplete or uneven welding at the welding joint may lead to a reduction in the shielding effect, which in turn affects the performance of the microwave oven and the user's safety.

[0004] In addition, the welding process has certain limitations. For example, the high temperature welding process may damage the material of the shielding tube, reducing its durability and reliability. Welding also needs to be carried out in a relatively complex environment, which increases the process steps and costs of production, so it is necessary to make further improvements. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a shielded wire conduit for microwave ovens that is simple in structure, easy to use, and designed to simplify the installation process and reduce the need to rely on complex welding technology, thereby improving production efficiency.

[0006] The utility model aims to achieve the following: a shielded wire threading conduit for a microwave oven, comprising an inner tube, a mounting tube extending outwardly from the outer end of the inner tube, the outer diameter of the mounting tube being smaller than the outer diameter of the inner tube, and a shielding tube extending outwardly from the outer end of the mounting tube;

[0007] It also includes a mounting hole opened on the shielding plate, through which the shielding tube and the mounting tube pass and extend out of the shielding plate after being installed;

[0008] It also includes an outer sleeve, which is sleeved on the outside of the shielding tube and the mounting tube. The inner hole wall of the outer sleeve and the outer wall of the mounting tube are connected by interference fit. The outer end surface of the inner tube and the inner end surface of the outer sleeve are clamped and fixed on the inner and outer ends of the shielding plate.

[0009] Furthermore, the outer diameter of the mounting tube is larger than the diameter of the mounting hole, an anti-slip groove is concavely arranged on the outer cylindrical surface of the mounting tube, and the mounting hole is fixed in the anti-slip groove.

[0010] Furthermore: the bottom diameter of the anti-slip groove is smaller than or equal to the diameter of the mounting hole.

[0011] Furthermore: the inner diameter of the outer sleeve is smaller than or equal to the outer diameter of the mounting tube.

[0012] Furthermore: the length of the outer sleeve is greater than the sum of the lengths of the shielding tube and the installation tube.

[0013] Furthermore: the inner tube, the mounting tube and the shielding tube are integrally formed of metal material.

[0014] Furthermore: the outer sleeve is integrally formed from metal material.

[0015] Furthermore: the outer end of the installation tube is provided with a step hole, and the shielding tube is inserted and fixed in the step hole.

[0016] Furthermore: a trumpet hole is arranged in the installation tube, one end of the shielding tube is arranged as a trumpet mouth, and the trumpet mouth of the shielding tube covers the trumpet hole and is fixed thereto.

[0017] The beneficial effects of the utility model are: 1. Simple structure, low production cost and improved market competitiveness.

[0018] 2. The design achieves easy assembly of components by optimizing the structure of the inner tube, mounting tube and shielding tube. In particular, the interference fit connection between the outer tube and the mounting tube and shielding tube effectively avoids the use of traditional welding technology, simplifies the production process and reduces production costs.

[0019] 3. Through the interference fit design of the outer sleeve, the shielding tube and the mounting tube can be firmly fixed on the shielding plate. This mechanical fixing method is more reliable and stable than the traditional welding method, and effectively reduces the failure rate caused by poor welding.

[0020] 4. The design of the entire shielded wire conduit takes electromagnetic compatibility into consideration. The one-piece design of the inner tube, mounting tube and shielding tube reduces electromagnetic leakage points, provides better shielding effect, and ensures the safe use and electromagnetic compatibility performance of the microwave oven.

[0021] 5. Since the design of the shielded wire conduit avoids complex welding operations, the maintenance and replacement process is simpler and faster. If repair or replacement is required, the entire assembly can be quickly disassembled and reinstalled, greatly reducing maintenance time and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 , 2 This is the general assembly effect diagram of the utility model.

[0023] Figure 3 This is an assembly drawing of the utility model.

[0024] Figure 4 It is a cross-sectional view of the structure of the utility model.

[0025] Figure 5 This is a structural sectional view of the first embodiment of the utility model.

[0026] Figure 6 This is a structural sectional view of the second embodiment of the utility model.

[0027] Explanation of the reference numerals: 1 - inner tube; 2 - mounting tube; 21 - anti-slip groove; 22 - step hole; 3 - shielding tube; 4 - shielding plate; 5 - mounting hole; 6 - outer tube. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below with reference to the accompanying drawings. A shielded wire threading conduit for a microwave oven comprises an inner tube 1, a mounting tube 2 is extended outwardly from the outer end of the inner tube 1, the outer diameter of the mounting tube 2 is smaller than the outer diameter of the inner tube 1, and a shielding tube 3 is extended outwardly from the outer end of the mounting tube 2;

[0029] It also includes a mounting hole 5 opened on the shielding plate 4, through which the shielding tube 3 and the mounting tube 2 are installed and extend out of the shielding plate 4;

[0030] It also includes an outer sleeve 6, which is sleeved on the outside of the shielding tube 3 and the mounting tube 2. The inner hole wall of the outer sleeve 6 and the outer wall of the mounting tube 2 are connected by interference fit. The outer end face of the inner tube 1 and the inner end face of the outer sleeve 6 are clamped and fixed on the inner and outer ends of the shielding plate 4.

[0031] In one embodiment, the outer diameter of the mounting tube 2 is larger than the diameter of the mounting hole 5, and an anti-slip groove 21 is concavely provided on the outer cylindrical surface of the mounting tube 2, and the mounting hole 5 is fixed in the anti-slip groove 21. The anti-slip groove allows the mounting tube to be directly inserted into the mounting hole for pre-positioning when installing, thereby preventing the mounting tube from being loosened and displaced during the assembly process, which is conducive to automated assembly.

[0032] In one embodiment, the bottom diameter of the anti-slip groove 21 is less than or equal to the diameter of the mounting hole 5. During installation, the mounting tube is tightly connected to the mounting hole by virtue of the deformation of the mounting hole, and the anti-slip groove plays an electromagnetic shielding role.

[0033] In one embodiment, the inner diameter of the outer sleeve 6 is smaller than or equal to the outer diameter of the mounting tube 2 .

[0034] In one embodiment, the length of the outer sleeve 6 is greater than the sum of the lengths of the shielding tube 3 and the mounting tube 2 .

[0035] like Figure 3 As shown, in one of the embodiments: the inner tube 1, the mounting tube 2 and the shielding tube 3 are integrally formed of metal material.

[0036] In one embodiment, the outer sleeve 6 is integrally formed of metal material.

[0037] like Figure 5 As shown, in one embodiment, in order to reduce the manufacturing difficulty and production cost, the outer end of the mounting tube 2 in this case is provided with a stepped hole 22, and the shielding tube 3 is inserted and fixed in the stepped hole. Therefore, the shielding tube can be cut by ordinary pipe material without complicated machining.

[0038] like Figure 6 As shown, in one embodiment, in order to prevent electromagnetic wave leakage in the axial direction and the loosening of the shielding tube during use, a horn hole 23 is provided in the mounting tube 2 described in this case, and one end of the shielding tube 3 is provided as a horn mouth 31, and the horn mouth 31 of the shielding tube covers the horn hole 23 and is fixed thereto. By using the axial and radial positioning of the horn mouth and the horn hole, the connection strength between the two can be effectively guaranteed.

[0039] Working principle: In this case, the inner tube 1 is used as the core threading channel, and its outer end extends to form the mounting tube 2. This design allows the mounting tube to be directly integrated with the inner tube, improving the structural firmness. The outer end of the mounting tube 2 further extends outward to form a shielding tube 3. The shielding tube not only enhances the shielding performance of the entire conduit, but also expands its connection function for better installation and fixation.

[0040] During assembly, the shielding tube 3 and the mounting tube 2 pass through the mounting hole 5 preset on the shielding plate 4 and extend out of the shielding plate. This penetrating and extending design allows the shielding tube and the mounting tube to be more effectively shielded and supported by the shielding plate. The outer sleeve 6 is designed to be sleeved on the outside of the shielding tube 3 and the mounting tube 2. This sleeve relationship is connected by an interference fit between the inner hole wall and the outer wall of the mounting tube. Interference fit is a tight fit that can effectively prevent relative movement and looseness between components and increase the overall stability of the structure.

[0041] It should be noted that the design of the outer sleeve 6 not only provides additional mechanical strength, but also enhances the shielding effectiveness of the entire threading conduit system. The fixing of the inner and outer ends of the shielding plate 4 is achieved by physical clamping, that is, the outer end surface of the inner tube 1 and the inner end surface of the outer sleeve 6 are clamped to each other. This clamping does not rely on traditional welding, reduces assembly complexity, and improves production efficiency and reliability.

[0042] Furthermore, the anti-slip groove 21 is designed to be concavely arranged on the outer cylindrical surface of the mounting tube 2, matching the diameter of the mounting hole 5. The purpose of this design is to make the mounting hole clamped and fixed in the anti-slip groove, thereby preventing the component from being displaced or falling off during long-term use. The precise calculation of the length and inner diameter of the outer sleeve ensures that the length and diameter covering the shielding tube and the mounting tube are sufficient to ensure the shielding effect, and allow the internal components to have enough space for necessary adjustments without generating excessive pressure.

[0043] In addition, the manufacturing process of selecting metal material for integral molding is crucial to the durability and functionality of the inner tube 1, the mounting tube 2, the shielding tube 3 and the outer tube 6. The metal material can effectively block electromagnetic interference while providing sufficient mechanical strength to withstand the pressure of daily use.

[0044] In summary: the structural design in this case has completely improved the assembly process of the traditional shielded wire conduit. By replacing welding with mechanical fixing, it not only simplifies the manufacturing process, but also improves the overall reliability and maintenance convenience of the product. Therefore, it can be widely promoted and used.

[0045] Obviously, the above embodiments are merely examples for clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the scope of protection of the claims created by the present invention.

Claims

1. A shielded wire conduit for a microwave oven, characterized in that: It comprises an inner tube (1), a mounting tube (2) extending outwardly from the outer end of the inner tube (1), the outer diameter of the mounting tube (2) being smaller than the outer diameter of the inner tube (1), and a shielding tube (3) extending outwardly from the outer end of the mounting tube (2); It also includes a mounting hole (5) formed on the shielding plate (4), through which the shielding tube (3) and the mounting tube (2) pass and extend out of the shielding plate (4) after being installed; It also includes an outer sleeve (6), which is sleeved outside the shielding tube (3) and the mounting tube (2), and the inner hole wall of the outer sleeve (6) is connected to the outer wall of the mounting tube (2) by interference fit, and the outer end surface of the inner tube (1) and the inner end surface of the outer sleeve (6) are clamped and fixed to the inner and outer ends of the shielding plate (4).

2. The shielded wire guide for a microwave oven according to claim 1, characterized in that: The outer diameter of the mounting tube (2) is larger than the diameter of the mounting hole (5), an anti-slip groove (21) is concavely arranged on the outer cylindrical surface of the mounting tube (2), and the mounting hole (5) is fixed in the anti-slip groove (21).

3. The shielded wire guide for a microwave oven according to claim 2, characterized in that: The bottom diameter of the anti-slip groove (21) is smaller than or equal to the diameter of the mounting hole (5).

4. The shielded wire guide for a microwave oven according to claim 1, characterized in that: The inner diameter of the outer sleeve (6) is smaller than or equal to the outer diameter of the mounting tube (2).

5. The shielded wire conduit for a microwave oven according to claim 1, characterized in that: The length of the outer sleeve (6) is greater than the sum of the lengths of the shielding tube (3) and the mounting tube (2).

6. The shielded wire conduit for a microwave oven according to claim 1, characterized in that: The inner tube (1), the mounting tube (2) and the shielding tube are integrally formed from a metal material.

7. The shielded wire guide for a microwave oven according to claim 1, characterized in that: The outer sleeve (6) is integrally formed from a metal material.

8. The shielded wire conduit for a microwave oven according to claim 1, characterized in that: The outer end of the mounting tube (2) is provided with a stepped hole (22), and the shielding tube (3) is inserted and fixed in the stepped hole.

9. The shielded wire conduit for a microwave oven according to claim 1, characterized in that: The mounting tube (2) is provided with a trumpet hole (23), one end of the shielding tube (3) is provided as a trumpet mouth (31), and the trumpet mouth (31) of the shielding tube covers the trumpet hole (23) and is fixed thereto.

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