Wiring structure for extra-large current

Abstract

The utility model relates to a wiring structure for an extra-large current. The wiring structure comprises a shell, glass, a transition ring and a lead, the glass, the transition ring and the wire are all arranged in the shell, the transition ring is sleeved on the wire, and the glass is arranged between the transition ring and the shell. Compared with the prior art, larger current can pass through the LED lamp, the overall appearance size of the LED lamp does not need to be increased, and the LED lamp is suitable for various installation positions.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical appliances, in particular to a wiring structure for extra-large current. Background Art

[0002] The wiring structure has requirements for sealing. Usually, a wire with a sealing material is sealed with glass to ensure sealing. The current passing through such products is small. If there is a requirement for large current, generally, a copper-core wire glass seal is used to meet the needs. If a larger current needs to pass through, usually, the diameter of the copper-core wire is increased to achieve it, and the overall external dimension of the product also increases accordingly; but in the case of limited installation space, it is impossible to pass a larger current.

[0003] Patent CN202122313772.9 discloses a wiring structure for an extra-large current transformer, including a transformer, a wiring terminal, a wire, and a seal. A wiring terminal is fixedly connected to the transformer. The wiring terminal includes a connecting plate connected to the transformer, and a wiring head is fixedly connected to the connecting plate. A fixed wire is connected inside the wiring head, and a seal is sleeved outside the wire. The seal is hermetically connected to the inner side of the end of the wiring head. The beneficial effects are as follows: By setting a clamping structure, the wiring can be more convenient and fast, and the fixing effect is better, which can effectively prevent the wire from slipping off. And a sealing structure is provided to seal the wiring part, effectively avoiding water vapor and dust from entering the wiring part through the gap at the connection, affecting the wiring connection effect and use, and preventing damage to the inside of the wiring terminal caused by dust and water vapor. However, this structure cannot achieve the passing of extra-large current. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the defects of the above-mentioned prior art and provide a wiring structure for extra-large current, which can achieve the passing of a larger current, and at the same time, the overall external dimension of the product does not need to increase, and it is applicable to various installation positions.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] The utility model provides a wiring structure for extra-large current, including: a housing, glass, a transition ring, and a wire;

[0007] The glass, the transition ring, and the wire are all arranged inside the housing. The transition ring is sleeved on the wire, and the glass is arranged between the transition ring and the housing.

[0008] Furthermore, the wire is a copper wire. By replacing the original copper-core wire with a copper wire, since there is no glass that matches the copper wire in terms of the coefficient of thermal expansion, the copper wire cannot be directly sealed with glass. A transition ring is added outside the copper wire, so that the passing current can be greatly increased without changing the external shape.

[0009] Further, an avoidance groove is provided in the inner cavity of the transition ring.

[0010] Further, the height of the avoidance groove is greater than the height of the glass.

[0011] Further, before sintering, one end of the transition ring is welded to one end of the wire.

[0012] Further, one end of the transition ring is welded to the circumference of one end of the wire. To ensure the sealing between the copper wire and the transition ring. In this way, when the temperature changes, since there is a gap between the glass sealing part and the copper wire, the stress generated by the copper wire is conducted to the glass sealing part through the welding part between the transition ring and the copper wire, rather than directly acting on the glass sealing joint. In this way, the sealing between the glass and the transition ring can be ensured to be effective.

[0013] Further, the other end of the transition ring is in contact with the other end of the wire. Without welding, it is in a free state to ensure the free expansion and contraction of the copper wire with temperature change.

[0014] Further, the material of the transition ring matches the thermal expansion coefficient of the glass.

[0015] Further, the wire welded with the transition ring and the housing are hermetically sealed at high temperature. The wire welded with the transition ring and the housing are pre-treated and then assembled into a graphite mold for high-temperature sealing.

[0016] Further, the stress generated by the wire is conducted to the glass sealing part through the welding part between the transition ring and the wire.

[0017] Under the condition that the installation position remains unchanged, the current allowed to pass through by the present utility model is greatly increased. Since the thermal expansion coefficient of the copper core wire is slightly larger than that of the glass, its reliability is superior to that of the glass-sealed product of the copper core wire. After the reliability test, the product fully meets the requirements.

[0018] Compared with the prior art, the present utility model has the following advantages:

[0019] It can achieve the passing of a larger current, and at the same time, the overall external dimension of the product does not need to be increased, and it is applicable to a variety of installation positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the wiring structure for extra-large current;

[0021] Figure 2 It is a cross-sectional view of the transition ring;

[0022] Figure 3 It is a top view of the transition ring;

[0023] Figure 4 Schematic diagram of a wire

[0024] Figure 5 Schematic diagram of a wire and a transition ring

[0025] Reference numerals in the drawings: 1 - housing; 2 - glass; 3 - transition ring; 4 - wire Detailed implementation manners

[0026] The present utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments. Features such as component models, material names, connection structures, control methods, algorithms, etc. that are not clearly described in this technical solution are regarded as common technical features disclosed in the prior art

[0027] Embodiment 1

[0028] The present utility model provides a wiring structure for extra-large current, as shown in Figure 1 , Figure 2 , Figure 3 , including: housing 1, glass 2, transition ring 3, wire 4

[0029] The glass 2, the transition ring 3, and the wire 4 are all arranged inside the housing 1. The transition ring 3 is sleeved on the wire 4, and the glass 2 is arranged between the transition ring 3 and the housing 1

[0030] As shown in Figure 4 , 5 , in the detailed implementation manner, the wire 4 is a copper wire. By replacing the original copper core wire with a copper wire, since there is no glass that matches the copper in terms of the coefficient of thermal expansion, the copper wire cannot be directly sealed with the glass 2. A transition ring 3 is added outside the copper wire, so that the current passing through can be greatly increased while the outer shape remains unchanged

[0031] In the detailed implementation manner, an avoidance groove is provided in the inner cavity of the transition ring 3

[0032] In the detailed implementation manner, the height of the avoidance groove is greater than the height of the glass 2

[0033] In the detailed implementation manner, before sintering, one end of the transition ring 3 is welded to one end of the wire 4

[0034] In a specific embodiment, one end of the transition ring 3 is welded to the circumference of one end of the wire 4. The sealing performance between the copper wire and the transition ring 3 is ensured. In this way, when the temperature changes, since there is a gap between the glass 2 sealing part and the copper wire, the stress generated by the copper wire is conducted to the glass 2 sealing part through the welding part between the transition ring 3 and the copper wire, rather than directly acting on the sealing part of the glass 2. In this way, the sealing between the glass 2 and the transition ring 3 can be ensured to be effective.

[0035] In a specific embodiment, the other end of the transition ring 3 contacts the other end of the wire 4. It is not welded and is in a free state to ensure the free expansion and contraction of the copper wire with temperature change.

[0036] In a specific embodiment, the material of the transition ring 3 matches the thermal expansion coefficient of the glass 2.

[0037] In a specific embodiment, the wire 4 welded with the transition ring 3 and the housing 1 are hermetically sealed at high temperature. The wire welded with the transition ring 3 and the housing 1 are pre-treated and then assembled into a graphite mold for high-temperature sealing.

[0038] In a specific embodiment, the stress generated by the wire 4 is conducted to the glass 2 sealing part through the welding part between the transition ring 3 and the wire 4.

[0039] With the installation position unchanged, the current allowed to pass through by the present utility model is greatly increased. Since the thermal expansion coefficient of the copper core wire is slightly larger than that of the glass, its reliability is superior to that of the glass-sealed product of the copper core wire. After reliability tests, the product fully meets the requirements.

[0040] It can achieve the passage of a larger current, and at the same time, the overall external dimension of the product does not need to be increased, and it is applicable to various installation positions.

[0041] The components not described in detail in this embodiment are all existing components that can be purchased through public channels.

[0042] The above description of the embodiments is for the convenience of those of ordinary skill in the art to understand and use the utility model. Those skilled in the art can obviously make various modifications to these embodiments easily and apply the general principles described herein to other embodiments without creative labor. Therefore, the present utility model is not limited to the above embodiments, and the improvements and modifications made by those skilled in the art without departing from the scope of the present utility model according to the disclosure of the present utility model should be within the protection scope of the present utility model.

Claims

1. A wiring structure for extremely large current, characterized in that: include: Shell (1), glass (2), transition ring (3), wire (4); The glass (2), transition ring (3) and wire (4) are all arranged in the shell (1); the transition ring (3) is sleeved on the wire (4); and the glass (2) is arranged between the transition ring (3) and the shell (1).

2. The wiring structure for extremely large current according to claim 1, characterized in that: The wire (4) is a copper wire.

3. The wiring structure for extremely large current according to claim 1, characterized in that: The inner cavity of the transition ring (3) is provided with a void avoidance groove.

4. The wiring structure for extremely large current according to claim 3, characterized in that: The height of the air avoidance groove is greater than the height of the glass (2).

5. The wiring structure for extremely large current according to claim 1, characterized in that: Before sintering, one end of the transition ring (3) is welded to one end of the wire (4).

6. The wiring structure for extremely large current according to claim 1, characterized in that: One end of the transition ring (3) is welded to the circumference of one end of the conductor (4).

7. The wiring structure for extremely large current according to claim 1, characterized in that: The other end of the transition ring (3) contacts the other end of the conductor (4).

8. The wiring structure for extremely large current according to claim 1, characterized in that: The material of the transition ring (3) matches the thermal expansion coefficient of the glass (2).

9. The wiring structure for extremely large current according to claim 1, characterized in that: The conductor (4) welded with the transition ring (3) and the housing (1) are sealed at high temperature.

10. The wiring structure for extremely large current according to claim 1, characterized in that: The stress generated by the wire (4) is transmitted to the sealing portion of the glass (2) through the welding portion between the transition ring (3) and the wire (4).

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