CN219717377U - Elastic interface for ignition cable - Google Patents
Elastic interface for ignition cable Download PDFInfo
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- CN219717377U CN219717377U CN202320669287.1U CN202320669287U CN219717377U CN 219717377 U CN219717377 U CN 219717377U CN 202320669287 U CN202320669287 U CN 202320669287U CN 219717377 U CN219717377 U CN 219717377U
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- ignition
- spring
- insulating tube
- wire
- outer side
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- 230000006835 compression Effects 0.000 claims abstract description 19
- 238000007906 compression Methods 0.000 claims abstract description 19
- 238000009434 installation Methods 0.000 claims abstract description 4
- 238000005452 bending Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The utility model discloses an elastic interface for an ignition cable, which comprises an insulating tube, an ignition wire, a spring and an insulating sleeve, wherein the ignition wire is arranged in the insulating tube, one end of the ignition wire is in compression joint with the tail end of the spring, and the other end of the spring extends out of the insulating tube and is in a natural telescopic state for realizing contact ignition; the outer side of the tail end of the spring is sleeved with an insulating sleeve, and the outer side of the insulating sleeve is in limit installation with the inside of the insulating tube and is used for fixing the position of the spring. According to the utility model, the spring structure is optimized, so that the damage caused by overlarge stress due to displacement of the ignition wire along with compression of the spring when the ignition cable, the ignition device and the ignition electric nozzle are installed is avoided. The utility model reduces the risk of bending fracture of the ignition wire and damage to the ignition cable, the ignition device and the ignition electric nozzle interface in the using process of the traditional spring compression type ignition cable, and has the advantages of accurate pressure control, prolonged service life and reduced weight.
Description
Technical Field
The utility model belongs to the technical field of ignition cable interface structures, and particularly relates to an elastic interface for an ignition cable.
Background
The ignition cable is an important component of an aircraft engine ignition system and has the function of transmitting high-voltage electric energy pulses generated by an ignition device to an ignition nozzle, and converting the electric pulses into electric sparks at the end of the nozzle so as to ignite combustible mixed gas in a combustion chamber of the engine. Currently, an ignition cable for an aeroengine is basically in threaded connection with an ignition device and an ignition electric nozzle. The ignition cable includes a center pole (positive pole), a ground pole (negative pole) and an insulating sleeve. The central pole mainly comprises an ignition wire and a contactor which is contacted with the ignition device and the ignition electric nozzle; the grounding electrode mainly comprises an external metal shield, a spring and a connecting nut.
In actual use, a larger part of ignition cable is in compression contact with the ignition device and the ignition electrode center electrode by adopting a plane, namely, the contactor of the ignition cable center electrode is in plane contact with the ignition device and the contactor of the ignition electrode center electrode, and in the process of screwing the connecting nut on the ignition cable, the insulating sleeve on the ignition cable extrudes the spring to compress the spring to generate elastic force, and after the connecting nut is screwed in place, the elastic force of the spring ensures the reliable contact between the ignition cable and the ignition device and the ignition electrode.
When the ignition cable spring with the structure is compressed, as the two ends are fixed with the ignition device and the ignition electric nozzle respectively, the ignition cable can only be extruded to displace towards the middle without redundant compression space, and the bending deformation stress of the ignition cable is easy to cause, so that after the ignition cable, the ignition device and the ignition electric nozzle are connected, the actual stress of the central electrode is far greater than a design value, the ignition cable is easy to bend and break in the long-term use process, and the ignition cable, the ignition device and the ignition electric nozzle interface are damaged, so that the service life requirement cannot be met.
In summary, the current spring compression ignition cable has the risk of bending fracture of the ignition wire, and damage to the ignition cable, the ignition device and the ignition electric nozzle interface during use.
Disclosure of Invention
The utility model aims to provide an elastic interface for an ignition cable, which solves the problems that in the prior art, an ignition cable, an ignition device and an ignition electric nozzle interface are damaged due to bending fracture caused by extrusion of an ignition wire.
The utility model is realized mainly by the following technical scheme:
the elastic interface for the ignition cable comprises an insulating tube, an ignition wire, a spring and an insulating sleeve, wherein the ignition wire is arranged in the insulating tube, one end of the ignition wire is in compression joint with the tail end of the spring, and the other end of the spring extends out of the insulating tube and is in a natural telescopic state for realizing contact ignition; the outer side of the tail end of the spring is sleeved with an insulating sleeve, and the outer side of the insulating sleeve is in limit installation with the inside of the insulating tube and is used for fixing the position of the spring.
In order to better realize the utility model, further, the two ends of the spring are respectively a fixed end and an elastic end, the tail end of the spring is a fixed end, and the fixed end is sleeved on the outer side of the ignition wire; the other end of the spring is an elastic end which is in a natural telescopic state and extends to the outer side of the insulating tube.
In order to better realize the utility model, further, the outer side of the tail end of the spring is in seamless connection with the outer side of the ignition wire main body, and the tail end of the spring is integrally pressed and connected with the end part of the ignition wire.
In order to better realize the utility model, further, the outer side end of the insulating sleeve is provided with a raised limiting table along the circumferential direction, and the inside of the insulating tube is provided with a stepped limiting step corresponding to the insulating sleeve.
In order to better realize the utility model, further, one end part of the insulating tube is provided with an introduction hole for the ignition wire to penetrate, and the other end of the insulating tube is provided with an opening structure corresponding to the spring.
In order to better realize the utility model, the cable joint is further provided with a cable joint, one end of the insulating tube is in threaded connection with the cable joint, an external thread is arranged on the outer side of one end of the insulating tube, and a limiting abutting table is arranged at the position, close to the external thread, of the insulating tube along the circumferential direction.
The beneficial effects of the utility model are as follows:
the utility model presses the ignition wire with the tail end of the spring through a special tool, fixes the insulating sleeve at the tail end of the spring, and then integrally sleeves the spring and the insulating sleeve into the insulating tube. According to the utility model, the spring structure is optimized, so that the damage caused by overlarge stress due to displacement of the ignition wire along with compression of the spring when the ignition cable, the ignition device and the ignition electric nozzle are installed is avoided. The utility model reduces the risk of bending fracture of the ignition wire, and damage to the ignition cable, the ignition device and the ignition electric nozzle interface in the using process of the traditional spring compression joint type ignition cable. The utility model has the advantages of accurate pressure control, prolonged service life and reduced weight.
The spring is optimized from steel wire coiling to machining, the machining precision is high, and the contact force control requirements of products of different types can be met. When the ignition cable is connected with the ignition device and the ignition electric nozzle, the contact force at the interface is spring force as the compression stress of the ignition wire is not received any more, so that the accurate control of the contact force at the interface can be realized; the interface structure is simplified, and the weight of the ignition cable is reduced; the stress applied to the ignition wire in use is reduced, which is beneficial to prolonging the service life.
Drawings
Fig. 1 is a schematic structural view of an elastic interface of an ignition cable.
The ignition device comprises a spring 1, an insulating sleeve 2, an ignition wire 3 and an insulating tube 4.
Detailed Description
Example 1:
an elastic interface for an ignition cable is shown in fig. 1, and comprises an insulating tube 4, an ignition wire 3, a spring 1 and an insulating sleeve 2, wherein the ignition wire 3 is arranged in the insulating tube 4, one end of the ignition wire 3 is in pressure connection with the tail end of the spring 1, and the other end of the spring 1 extends out of the insulating tube 4 and is in a natural telescopic state for realizing contact ignition; the outer side of the tail end of the spring 1 is sleeved with an insulating sleeve 2, and the outer side of the insulating sleeve 2 is in limit installation with the inside of an insulating tube 4 and is used for fixing the position of the spring 1.
In the use process, the ignition wire 3 is in pressure connection with the spring 1 through a special tool, the insulating sleeve 2 is fixed at the tail end of the spring 1, and then the spring 1 and the insulating sleeve 2 are integrally sleeved into the insulating tube 4. The spring 1 at the same time acts as a contactor.
Preferably, two ends of the spring 1 are respectively a fixed end and an elastic end, the tail end of the spring 1 is a fixed end, and the fixed end is sleeved on the outer side of the ignition wire 3; the other end of the spring 1 is an elastic end which is in a natural telescopic state and extends to the outer side of the insulating tube 4.
Preferably, the outer side of the tail end of the spring 1 is in seamless connection with the outer side of the main body of the ignition wire 3, and the tail end of the spring 1 is integrally pressed and connected with the end part of the ignition wire 3.
In the embodiment, the structure of the spring 1 is optimized, so that the ignition wire 3 is prevented from being displaced along with the compression of the spring 1 when the ignition cable is installed with an ignition device and an ignition electric nozzle, and damage caused by overlarge stress is avoided. The spring 1 is optimized from traditional steel wire winding to mechanical processing, has high processing precision, and can meet the contact force control requirements of products of different types; when the ignition cable is connected with the ignition device and the ignition electric nozzle, the contact force at the interface is the elasticity of the spring 1 as the compression stress of the ignition wire 3 is not received any more, so that the accurate control of the contact force at the interface can be realized; the interface structure is simplified, and the weight of the ignition cable is reduced; the stress applied to the ignition wire 3 in use is reduced, which is beneficial to increase the service life.
Example 2:
an elastic interface for an ignition cable is shown in fig. 1, and comprises an insulating tube 4, an ignition wire 3, a spring 1 and an insulating sleeve 2, wherein one end of the ignition wire 3 extends into the insulating tube 4 and is in compression joint with the fixed end of the spring 1, and the fixed end of the spring 1 is in seamless connection with the main body of the ignition wire 3, and the surface of the fixed end is flush. The elastic end of the spring 1 extends out of the insulating tube 4 for realizing contact ignition. The outer side of the fixed end of the spring 1 is fixed with the inner limit of the insulating tube 4 through the insulating sleeve 2. The outer side wall of the insulating sleeve 2 is in limit connection with the inner side wall of the insulating tube 4. The outside end of insulating sheath 2 is provided with bellied spacing platform along circumference, the inside of insulating tube 4 is provided with echelonment spacing step corresponding to insulating sheath 2.
In the embodiment, the structure of the spring 1 is optimized, so that the ignition wire 3 is prevented from being displaced along with the compression of the spring 1 when the ignition cable is installed with an ignition device and an ignition electric nozzle, and damage caused by overlarge stress is avoided. The spring 1 is optimized from traditional steel wire winding to mechanical processing, has high processing precision, and can meet the contact force control requirements of products of different types; when the ignition cable is connected with the ignition device and the ignition electric nozzle, the contact force at the interface is the elasticity of the spring 1 as the compression stress of the ignition wire 3 is not received any more, so that the accurate control of the contact force at the interface can be realized; the interface structure is simplified, and the weight of the ignition cable is reduced; the stress applied to the ignition wire 3 in use is reduced, which is beneficial to increase the service life.
Example 3:
an elastic interface for an ignition cable is shown in fig. 1, and comprises a cable joint and an insulating tube 4, wherein one end of the insulating tube 4 is in threaded connection with the cable joint, an introduction hole for the ignition wire 3 to penetrate is formed in one end part of the insulating tube 4, and the other end of the insulating tube is arranged in an opening structure corresponding to the spring 1. One end of the ignition wire 3 stretches into the insulating tube 4 and is in compression joint with the tail end of the spring 1, an insulating sleeve 2 is sleeved on the outer side of the compression joint of the ignition wire 3 and the spring 1, and the ignition wire is fixedly connected with the insulating tube 4 through the insulating sleeve 2. The outer side of the insulating sleeve 2 is in limit connection with the insulating tube 4. The other end of the spring 1 extends out of an insulating tube 4 for realizing contact ignition.
Preferably, two ends of the spring 1 are respectively a fixed end and an elastic end, the tail end of the spring 1 is a fixed end, and the fixed end is sleeved on the outer side of the ignition wire 3; the other end of the spring 1 is an elastic end which is in a natural telescopic state and extends to the outer side of the insulating tube 4.
Preferably, the outer side of the tail end of the spring 1 is in seamless connection with the outer side of the main body of the ignition wire 3, and the tail end of the spring 1 is integrally pressed and connected with the end part of the ignition wire 3.
Preferably, a raised limiting table is arranged at the outer side end of the insulating sleeve 2 along the circumferential direction, and a stepped limiting step is arranged in the insulating tube 4 corresponding to the insulating sleeve 2.
Preferably, an external thread is arranged on the outer side of one end of the insulating tube 4, and a limiting abutting table is circumferentially arranged at the position, close to the external thread, of the insulating tube 4.
According to the utility model, an ignition wire 3 is in pressure connection with the tail end of a spring 1 through a special tool, an insulating sleeve 2 is fixed at the tail end of the spring 1, and then the spring 1 and the insulating sleeve 2 are integrally sleeved into an insulating tube 4. According to the utility model, the structure of the spring 1 is optimized, so that the ignition wire 3 is prevented from being displaced along with the compression of the spring 1 when the ignition cable, the ignition device and the ignition electric nozzle are installed, and damage caused by overlarge stress is avoided. The utility model reduces the risk of damage to the ignition cable, the ignition device and the ignition electric nozzle interface due to bending fracture of the ignition wire 3 in the using process of the traditional spring 1 crimping type ignition cable. The utility model has the advantages of accurate pressure control, prolonged service life and reduced weight.
The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model in any way, and any simple modification, equivalent variation, etc. of the above embodiment according to the technical matter of the present utility model fall within the scope of the present utility model.
Claims (6)
1. The elastic interface for the ignition cable is characterized by comprising an insulating tube (4), an ignition wire (3), a spring (1) and an insulating sleeve (2), wherein the ignition wire (3) is arranged in the insulating tube (4), one end of the ignition wire (3) is in compression joint with the tail end of the spring (1), and the other end of the spring (1) extends out of the insulating tube (4) and is in a natural telescopic state for realizing contact ignition; the outer side of the tail end of the spring (1) is sleeved with an insulating sleeve (2), and the outer side of the insulating sleeve (2) and the inside of the insulating tube (4) are in limit installation and are used for fixing the position of the spring (1).
2. The elastic interface for the ignition cable according to claim 1, wherein two ends of the spring (1) are respectively a fixed end and an elastic end, the tail end of the spring (1) is a fixed end, and the fixed end is sleeved outside the ignition wire (3); the other end of the spring (1) is an elastic end which is in a natural telescopic state and extends to the outer side of the insulating tube (4).
3. An elastic interface for an ignition cable according to claim 2, characterized in that the outer side of the end of the spring (1) is in seamless engagement with the outer side of the body of the ignition wire (3), the end of the spring (1) being integrally crimped with the end of the ignition wire (3).
4. An elastic interface for an ignition cable according to claim 1, characterized in that the outer end of the insulating sleeve (2) is provided with a raised limit table in the circumferential direction, and the inside of the insulating tube (4) is provided with a stepped limit step corresponding to the insulating sleeve (2).
5. An elastic interface for an ignition cable according to any one of claims 1-4, characterized in that one end of the insulating tube (4) is provided with an introduction hole for the ignition wire (3) to pass through, and the other end is provided in an open structure corresponding to the spring (1).
6. The elastic interface for an ignition cable according to claim 4, further comprising a cable joint, wherein one end of the insulating tube (4) is in threaded connection with the cable joint, an external thread is arranged on the outer side of one end of the insulating tube (4), and a limiting abutting table is circumferentially arranged at a position, close to the external thread, of the insulating tube (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320669287.1U CN219717377U (en) | 2023-03-30 | 2023-03-30 | Elastic interface for ignition cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320669287.1U CN219717377U (en) | 2023-03-30 | 2023-03-30 | Elastic interface for ignition cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219717377U true CN219717377U (en) | 2023-09-19 |
Family
ID=88000691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320669287.1U Active CN219717377U (en) | 2023-03-30 | 2023-03-30 | Elastic interface for ignition cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219717377U (en) |
-
2023
- 2023-03-30 CN CN202320669287.1U patent/CN219717377U/en active Active
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