阅读说明：本技术 一种用于内燃机的点火线圈的硅酮附接件及其方法 (Silicone attachment for ignition coil of internal combustion engine and method thereof ) 是由 刘周翔 周振辉 于 2020-09-03 设计创作，主要内容包括：本发明公开了一种用于内燃机的点火线圈的硅酮附接件及其方法,包括套管本体,所述套管本体的内部设有直筒孔,所述直筒孔的一端设有第一膨胀孔,所述套管本体的另一侧表面设有收缩筒,所述收缩套的一端设有膨胀套,所述膨胀套的另一端固定连接有收缩端头,所述膨胀套的内部设有第二膨胀孔,所述第二膨胀孔的一端连接于直筒孔的另一端,所述套管本体和膨胀套的表面均设有环形连接槽,所述环形连接槽的内部固定卡接有环形定位套,所述环形定位套的内部固定镶嵌有环形骨架,所述环形连接槽和环形定位套分别位于套管本体的两端位置,这样能够大大提高生产使用的便利性,保证安装定位的安全稳定性。(The invention discloses a silicone attachment for an ignition coil of an internal combustion engine and a method thereof, the silicone attachment comprises a sleeve body, a straight cylinder hole is arranged inside the sleeve body, a first expansion hole is arranged at one end of the straight cylinder hole, a contraction cylinder is arranged on the surface of the other side of the sleeve body, an expansion sleeve is arranged at one end of the contraction sleeve, a contraction end head is fixedly connected to the other end of the expansion sleeve, a second expansion hole is arranged inside the expansion sleeve, one end of the second expansion hole is connected to the other end of the straight cylinder hole, annular connecting grooves are arranged on the surfaces of the sleeve body and the expansion sleeve respectively, an annular positioning sleeve is fixedly clamped inside the annular connecting grooves, an annular framework is fixedly embedded inside the annular positioning sleeve, the annular connecting grooves and the annular positioning sleeve are respectively positioned at two ends of the sleeve body, and therefore, the convenience of production and use can be greatly improved, the safety and stability of installation and positioning are ensured.)

1. A silicone attachment for ignition coils of internal combustion engines and a method thereof, comprising a bushing body (1), characterized in that: a straight cylinder hole (11) is arranged in the sleeve body (1), a first expansion hole (12) is arranged at one end of the straight cylinder hole (11), a contraction cylinder (13) is arranged on the surface of the other side of the sleeve body (1), an expansion sleeve (14) is arranged at one end of the contraction sleeve (13), the other end of the expansion sleeve (14) is fixedly connected with a contraction end head (15), a second expansion hole (16) is arranged in the expansion sleeve (14), one end of the second expansion hole (16) is connected with the other end of the straight cylindrical hole (11), the surfaces of the sleeve body (1) and the expansion sleeve (14) are both provided with an annular connecting groove (17), an annular positioning sleeve (18) is fixedly clamped inside the annular connecting groove (17), an annular framework (19) is fixedly embedded in the annular positioning sleeve (18), the annular connecting groove (17) and the annular positioning sleeve (18) are respectively positioned at two ends of the sleeve body (1).

2. A silicone attachment for ignition coils of internal combustion engines and method thereof according to claim 1, characterized in that: the side face of the shrink sleeve (13) is fixedly connected with annular sheets (2), and the annular sheets (2) are symmetrically distributed at two ends of the sleeve body (1).

3. A silicone attachment for ignition coils of internal combustion engines and method thereof according to claim 2, characterized in that: the surface of the annular sheet (2) is provided with puncture holes (21), and the puncture holes (21) are uniformly distributed on the surface of the annular sheet (2) at equal angles.

4. A silicone attachment for ignition coils of internal combustion engines and method thereof according to claim 1, characterized in that: and the surface of the annular positioning sleeve (18) is fixedly wound with reinforcing fibers (22), and two ends of each reinforcing fiber (22) are fixedly connected to the side surfaces of the annular connecting grooves (17).

5. A silicone attachment for ignition coil of internal combustion engine and method thereof according to claim 4 characterized by: the surface of the reinforcing fiber (22) is connected to the surface of the shrinkage cylinder (13) in a bending mode, and the side face of the reinforcing fiber (22) fixedly penetrates through the side face of the puncture hole (21).

6. A silicone attachment for ignition coils of internal combustion engines and method thereof according to claim 1, characterized in that: the sleeve body (1) is made of silicone rubber and comprises 40-60% of polysiloxane silicone resin, 10-20% of low-density polyethylene, 3-6% of dibutyltin dilaurate catalyst, 5-8% of isocyanate, 2-5% of silane coupling agent and 20-30% of polyether glycol solvent.

7. A silicone attachment for ignition coil of internal combustion engine and method thereof according to claim 6 characterized by: the preparation method of the silicone rubber comprises the following steps:

s1, weighing the components according to the mass percentage for later use;

s2, placing polyether glycol into a reaction kettle, vacuumizing to-0.05 MPa to-0.03 MPa, simultaneously heating to 90 ℃ to 125 ℃, keeping the temperature for 4 hours to 6 hours, and then discharging gas to obtain a standby solvent;

s3, adding polysiloxane silicone resin and low-density polyethylene into a ball mill for ball milling treatment to obtain a mixed raw material;

s4, adding the mixed soft material into a standby solvent, uniformly stirring for 5 to 8 minutes, adding a dibutyltin dilaurate catalyst, isocyanate and a silane coupling agent, and continuously stirring to react for 2 to 3 hours to obtain a viscous product;

and S5, dehydrating and drying the viscous product, and putting the viscous product into a double-screw extruder for extrusion granulation to obtain the silicone rubber.

Technical Field

The present invention relates to the field of ignition coil technology, in particular to a silicone attachment for an ignition coil for an internal combustion engine and a method thereof.

Background

When the ignition coil is connected, the ignition coil needs to be sleeved into an insulating pipe fitting, and the silicone accessory is used.

But current ignition coil annex structure, the straight section of thick bamboo rubber tube that is simple more cup joints the location when connecting, is unfavorable for like this with the end location of coil, and it drops to become flexible easily, and causes the rubber tube to last the tensioning when compactness is too big, and thermal ageing is with higher speed, reduces life, and safety and stability is not enough to be unfavorable for lubricating the maintenance, current rubber performance is unsatisfactory simultaneously, remains to propose a new rubber annex.

Disclosure of Invention

The object of the present invention is to solve the drawbacks of the prior art and to propose a silicone attachment for an ignition coil of an internal combustion engine and a method thereof.

In order to achieve the purpose, the invention adopts the following technical scheme:

the silicone attachment for the ignition coil of the internal combustion engine comprises a sleeve body, wherein a straight cylinder hole is formed in the sleeve body, a first expansion hole is formed in one end of the straight cylinder hole, a contraction cylinder is arranged on the surface of the other side of the sleeve body, an expansion sleeve is arranged at one end of the contraction sleeve, a contraction end head is fixedly connected to the other end of the expansion sleeve, a second expansion hole is formed in the expansion sleeve, one end of the second expansion hole is connected to the other end of the straight cylinder hole, annular connecting grooves are formed in the surfaces of the sleeve body and the expansion sleeve, annular positioning sleeves are fixedly clamped in the annular connecting grooves, annular frameworks are fixedly embedded in the annular positioning sleeves, and the annular connecting grooves and the annular positioning sleeves are located at two ends of the sleeve body respectively.

Preferably, the side surface of the shrinkage sleeve is fixedly connected with annular sheets, and the annular sheets are symmetrically distributed at two ends of the sleeve body.

Preferably, the surface of the annular sheet is provided with puncture holes, and the puncture holes are uniformly distributed on the surface of the annular sheet at equal angles.

Preferably, the surface of the annular positioning sleeve is fixedly wound with a reinforcing fiber, and two ends of the reinforcing fiber are fixedly connected to the side surfaces of the annular connecting groove.

Preferably, the surface of the reinforcing fiber is connected to the surface of the shrinkage cylinder in a bent manner, and the side surface of the reinforcing fiber is fixedly penetrated through the side surface of the puncture hole.

Preferably, the sleeve body is made of silicone rubber and comprises 40% -60% of polysiloxane silicone resin, 10% -20% of low-density polyethylene, 3% -6% of dibutyltin dilaurate catalyst, 5% -8% of isocyanate, 2% -5% of silane coupling agent and 20% -30% of polyether glycol solvent.

Preferably, the preparation method of the silicone rubber comprises the following steps:

s1, weighing the components according to the mass percentage for later use;

s2, placing polyether glycol into a reaction kettle, vacuumizing to-0.05 MPa to-0.03 MPa, simultaneously heating to 90 ℃ to 125 ℃, keeping the temperature for 4 hours to 6 hours, and then discharging gas to obtain a standby solvent;

s3, adding polysiloxane silicone resin and low-density polyethylene into a ball mill for ball milling treatment to obtain a mixed raw material;

s4, adding the mixed soft material into a standby solvent, uniformly stirring for 5 to 8 minutes, adding a dibutyltin dilaurate catalyst, isocyanate and a silane coupling agent, and continuously stirring to react for 2 to 3 hours to obtain a viscous product;

and S5, dehydrating and drying the viscous product, and putting the viscous product into a double-screw extruder for extrusion granulation to obtain the silicone rubber.

According to the silicone attachment for the ignition coil of the internal combustion engine and the method thereof, the multi-stage structure sleeve body is adopted, the annular connecting grooves at two ends are combined to connect the annular positioning sleeves, binding positioning is facilitated after sleeving, structural stability is improved, the periphery is connected with the reinforcing fibers for tensioning, cracking caused by over tensioning is avoided, meanwhile, the inside can be maintained by flushing lubricating oil in a daily safety mode, convenience and stability are achieved, reaction production is carried out by adopting reasonable material proportion, the rubber performance of the silicone attachment is improved, the structural strength and the anti-cracking effect are guaranteed, convenience in production and use can be greatly improved, and safety and stability of installation and positioning are guaranteed.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of the annular positioning sleeve of FIG. 1 at point A.

In the figure: the structure comprises a sleeve body 1, a straight cylinder hole 11, a first expansion hole 12, a contraction sleeve 13, an expansion sleeve 14, a contraction end 15, a second expansion hole 16, an annular connecting groove 17, an annular positioning sleeve 18, an annular framework 19, an annular sheet 2, a puncture hole 21 and reinforcing fibers 22.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.