Filament lead structure capable of preventing surface from being scratched
The filament lead mold with Haf structure solved the surface scratches and poor contact problems of the filament lead head of the YD1212 electronic tube, achieving reliable plane contact, avoiding overheating, and improving product quality.
Patent Information
- Application Number
- CN202421948673.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-13
AI Technical Summary
The filament lead of the YD1212 electronic tube is easily deformed due to local uneven stress at high temperatures, resulting in surface scratches. The traditional clamp structure leads to poor contact and overheating problems.
The filament lead mold with Haf structure is formed by the right lead mold of the filament and the left lead mold of the filament, and is fixed by screws and nuts to ensure that the plane is in contact with the plane, reduce local stress and avoid scratches.
Effectively prevent scratches on the surface of the filament lead head, ensure good contact, avoid overheating caused by increased contact resistance, and improve product appearance quality and reliability.
Smart Images
Figure CN223092813U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of filament lead structures of high-power electron tubes, and particularly relates to a filament lead structure for preventing surface scratches. Background Art
[0002] An electron tube is an electronic device that generates current conduction in an airtight container and uses the action of an electric field on an electron flow in a vacuum to obtain signal amplification or oscillation. It was early used in electronic products such as televisions, radio amplifiers, etc. In recent years, it has gradually been replaced by transistors and integrated circuits. However, currently, in some high-fidelity audio equipment, electron tubes are still used as audio power amplification devices. But the use of electron tubes in different fields has different requirements.
[0003] The YD1212 electron tube is a water-cooled electron tube with a directly heated thorium-tungsten cathode structure. The maximum output power of the YD1212 is 247.5 kW, the filament voltage is 12.6 V, the rated filament current is up to 420 A at most, and the filament heating power reaches up to 5290 W at most. It is mainly used for the radio frequency drying generator of industrial high-frequency drying equipment. Therefore, the filament heating power of this tube is large, which poses higher requirements for the filament lead. It is required that the filament lead device has good contact with the filament lead-out head of the electron tube and does not damage the outer surface of the filament lead-out head. The material of the filament lead-out head of the electron tube is oxygen-free copper. The strength of oxygen-free copper material becomes poor at high temperatures, and it is prone to deformation under local stress and pits will appear. In view of the above situation, the utility model provides a filament lead structure for preventing surface scratches. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a filament lead structure for preventing surface scratches.
[0005] The above technical purpose of the utility model is achieved through the following technical solutions:
[0006] A filament lead structure for preventing surface scratches includes a filament right lead mold, a filament left lead mold, and a filament lead plate. The filament lead-out head of the electron tube is in a cylindrical structure. The filament right lead mold and the filament left lead mold form a split structure through the connecting structures on both sides. Contact blocks for contacting the filament lead-out head are arranged on the inner sides of the bottoms of the filament right lead mold and the filament left lead mold. A gap is provided between the inner wall of the split structure formed by the filament right lead mold and the filament left lead mold and the outer circumference of the filament lead-out head. A screw is provided at the top of each of the filament right lead mold and the filament left lead mold. The filament lead plate covers the upper part of the filament lead-out head. Mounting through holes for the screws to pass through are provided on the filament lead plate. Then, the motor lead joint of the device and the screw are connected together through a nut, and the filament lead plate is fixed on the top of the filament lead-out head and contacts it.
[0007] Further, the connection structure includes connection plugs and connection blocks arranged on both sides of the right lead die or the left lead die of the filament. The connection plugs are inserted into the middle card slots of the connection blocks. The connection block is also provided with fixing through holes, and the right lead die and the left lead die of the filament are connected and fixed on both sides by inserting pins into the fixing through holes.
[0008] Further, the screw and the right lead die or the left lead die of the filament are of an integral structure.
[0009] In summary, the present utility model has the following beneficial effects:
[0010] 1. The lead wire of the device forms a half structure through the left lead die and the right lead die of the filament, and then the upper and lower planes of the die are ensured to be in contact with the lead-out head of the electron tube filament through the filament lead plate. Since it is plane-to-plane contact, local stress on the lead-out head of the filament is avoided. Moreover, by tightening the nut, the upper and lower planes of the die are very reliably in contact with the lead-out head of the electron tube filament, and the contact resistance will not become large due to poor contact, causing the lead-out head of the electron tube filament to overheat.
[0011] 2. The half-type filament lead device provided by the present utility model solves the problem of poor lead contact caused by the traditional clamp structure, and the lead-out head of the filament is scratched during the installation process due to uneven stress, which can effectively protect the appearance quality of the product, and is simple and practical to operate. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 is a schematic diagram of the filament lead device of the present utility model;
[0013] Figure 2 is an assembled schematic diagram of the right lead die and the left lead die of the filament;
[0014] Figure 3 is a side view of the filament lead die;
[0015] Figure 4 is a schematic diagram of the structure of the filament lead plate.
[0016] In the figure, 1. Right lead die of the filament; 2. Left lead die of the filament; 3. Lead-out head of the filament; 4. Filament lead plate; 5. Nut; 6. Screw; 7. Motor lead joint; 8. Contact block; 9. Connection plug; 10. Connection block; 11. Fixing through hole; 12. Installation through hole. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] The present utility model will be further described in detail below in conjunction with the accompanying drawings. The technical solutions in the embodiments of the present utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present utility model.
[0018] As Figure 1 shown, a filament lead structure for preventing surface scratches includes a filament right lead mold 1, a filament left lead mold 2, and a filament lead plate 4. The filament lead-out head 3 of the electronic lamp tube is in a cylindrical structure. The filament right lead mold 1 and the filament left lead mold 2 form a half structure through the connecting structures on both sides (refer to Figure 2 ). Contact blocks 8 in contact with the filament lead-out head 3 are provided on the inner sides of the bottoms of the filament right lead mold 1 and the filament left lead mold 2. A clearance is provided between the inner wall of the half structure formed by the filament right lead mold 1 and the filament left lead mold 2 and the outer circumference of the filament lead-out head 3. A screw 6 is provided at the top of each of the filament right lead mold 1 and the filament left lead mold 2. The filament lead plate 4 covers the upper part of the filament lead-out head 3, and mounting through holes 12 for the screws 6 to pass through are provided on the filament lead plate 4 (refer to Figure 4 ). Then, the motor lead joint 7 of the device and the screw 6 are connected together through a nut 5, and the filament lead plate 4 is fixed on the top of the filament lead-out head 3 and in contact with it.
[0019] Furthermore, as Figure 2 and Figure 3 shown, the connecting structure includes connecting plug blocks 9 and connecting latch blocks 10 provided on both sides of the filament right lead mold 1 or the filament left lead mold 2. The connecting plug block 9 is inserted into the middle card slot of the connecting latch block 10. Fixing through holes 11 are also provided on the connecting block 10, and the two sides of the filament right lead mold 1 and the filament left lead mold 2 are connected and fixed by inserting a pin into the fixing through holes 11.
[0020] Furthermore, as Figure 3 shown, the screw 6 and the filament right lead mold 1 or the filament left lead mold 2 are of an integral structure, which ensures the reliability of the connection and reduces the number of components.
[0021] The lead of this device forms a half structure through the filament left lead mold and the filament right lead mold, and then the upper and lower planes of the mold are ensured to be in contact with the filament lead-out head of the electron tube through the filament lead plate. Because it is plane-to-plane contact, local stress on the filament lead-out head is avoided. Moreover, through the tightening of the nut, the upper and lower planes of the mold are very reliably in contact with the filament lead-out head of the electron tube, and it will not cause the contact resistance to increase due to poor contact, resulting in overheating of the filament lead-out head of the electron tube.
[0022] The split-type filament lead device provided by the utility model solves the problems of poor lead contact caused by the traditional clamp structure and the scratching of the filament lead head during the installation process due to uneven force, which can effectively protect the appearance quality of the product and is simple and practical in operation.
[0023] This specific embodiment is only an explanation of the utility model and does not limit the utility model. After reading this specification, those skilled in the art can make modifications without creative contributions to this embodiment as needed, but as long as they are within the scope of the claims of the utility model, they are protected by the patent law.
Claims
1. A filament lead structure for preventing surface scratches, characterized in that: It includes a filament right lead die (1), a filament left lead die (2) and a filament lead plate (4). The filament lead-out head (3) of the electronic lamp tube is of a cylindrical structure. The filament right lead die (1) and the filament left lead die (2) form a split structure through the connecting structures on both sides. Contact blocks (8) in contact with the filament lead-out head (3) are provided on the inner sides of the bottoms of the filament right lead die (1) and the filament left lead die (2). A clearance is provided between the inner wall of the split structure formed by the filament right lead die (1) and the filament left lead die (2) and the outer circumference of the filament lead-out head (3). A screw (6) is provided at the top of each of the filament right lead die (1) and the filament left lead die (2). The filament lead plate (4) covers the upper part of the filament lead-out head (3). Mounting through holes (12) for the screws (6) to pass through are provided on the filament lead plate (4). Then, the motor lead joint (7) of the device and the screw (6) are connected together through a nut (5), and the filament lead plate (4) is fixed to the top of the filament lead-out head (3) and contacts it.
2. The filament lead structure for preventing surface scratches according to claim 1, characterized in that: The connecting structure includes connecting plugs (9) and connecting blocks (10) provided on both sides of the filament right lead die (1) or the filament left lead die (2). The connecting plugs (9) are inserted into the middle card slots of the connecting blocks (10). Fixing through holes (11) are further provided on the connecting blocks (10). The two sides of the filament right lead die (1) and the filament left lead die (2) are connected and fixed by inserting pins into the fixing through holes (11).
3. A filament lead structure for preventing surface scratches according to claim 2, characterized in that: The screw (6) and the filament right lead die (1) or the filament left lead die (2) are of an integral structure.