CN207363762U

CN207363762U - A kind of connection structure of diffusion plate and intermediate

Info

Publication number: CN207363762U
Application number: CN201721256029.1U
Authority: CN
Inventors: 付雪飞
Original assignee: JIANGSU YIHEJIE AUTOMOBILE TECHNOLOGY Co Ltd
Current assignee: JIANGSU YIHEJIE AUTOMOBILE TECHNOLOGY Co Ltd
Priority date: 2017-09-27
Filing date: 2017-09-27
Publication date: 2018-05-15
Anticipated expiration: 2027-09-27

Abstract

The utility model discloses the connection structure of a kind of diffusion plate and intermediate, it includes diffusion plate and intermediate, through hole is offered on the diffusion plate, the corresponding through hole on the diffusion plate in offering threaded hole, trip bolt, which passes through the through hole and lock onto in the threaded hole, is fixed on diffusion plate on intermediate, wherein, the trip bolt includes screw head and forms externally threaded screw bar portion, the radius of the screw head is more than the outside diameter of the screw bar portion, the screw head medial surface outer rim is extended with a circle corners to the side close to the screw bar portion, the corners is partially submerged into the diffusion plate during trip bolt locking.The connection structure of above-mentioned diffusion plate and intermediate is not only simple in structure；It is easily achieved；And good seal performance, firm and reliable connection.

Description

A kind of connection structure of diffusion plate and intermediate

Technical field

A kind of turbocharger is the utility model is related to, more particularly, to a kind of diffusion plate for turbocharger with The connection structure of mesosome.

Background technology

Turbocharger is actually a kind of air compressor, increases air inflow by compressed air.It is to utilize hair The exhaust gas inertia impulsive force of motivation discharge promotes the indoor turbine of turbine, and turbine drives coaxial impeller again, impeller force feed is by sky The air that air cleaner pipeline is sent, is allowed to supercharging and enters cylinder.When engine speed increases, the exhaust gas velocity of discharge turns with turbine Speed also synchronous increase, impeller just compress more air and enter cylinder, and pressure and the density increase of air can burn more Fuel, the corresponding rotating speed for increasing fuel quantity and adjusting engine, it is possible to increase the output power of engine.

At present, it is existing to be connected mostly using plain screw for the diffusion plate of turbocharger and the connection structure of intermediate Connect, junction between the two does not consider encapsulation process, therefore this structure is got over the application range of turbocharging technology Come wider, the leakage problem that turbocharger produces in use is also more and more.

Utility model content

The purpose of this utility model is to provide the connection structure of a kind of diffusion plate and intermediate, its with it is simple in structure, The characteristics of good airproof performance and reliable connection, to solve above-mentioned existing for the connection structure of diffusion plate and intermediate in the prior art ask Topic.

For this purpose, the utility model uses following technical scheme：

A kind of connection structure of diffusion plate and intermediate, it includes diffusion plate and intermediate, is offered on the diffusion plate Through hole, for the corresponding through hole in offering threaded hole on the intermediate, trip bolt is through the through hole and lock onto described Diffusion plate is fixed on intermediate in threaded hole, wherein, the trip bolt includes screw head and forms externally threaded Screw bar portion, the radius of the screw head are more than the outside diameter of the screw bar portion, the screw head medial surface outer rim to by The side of the nearly screw bar portion is extended with a circle corners, and the corners is partially submerged into described when the trip bolt is locked In diffusion plate.

Especially, cylinder convex shoulder, the cylinder convex shoulder are provided between the screw bar portion and the screw head Radius be more than the radius of the screw bar portion, the radius of the screw head is more than the radius of the cylinder convex shoulder, described Through hole is coordinates the stepped hole that the cylinder convex shoulder is set, the one side wall of the cylinder convex shoulder when trip bolt is locked It is resisted against on the step surface of the stepped hole and forms sealing surface.

Especially, the screw head setting is close in the cylinder convex shoulder.

The beneficial effects of the utility model are that the connection structure of the diffusion plate and intermediate passes through compared with prior art Change the structure of screw head, reduce the gap between screw and diffusion plate, improve the sealing performance of booster, while utilize platform The cooperation of rank hole and cylinder convex shoulder improves its sealing performance again.It is not only simple in structure；It is easily achieved；And sealing performance It is good, firm and reliable connection.

Brief description of the drawings

Fig. 1 is the structural representation of the connection structure of the diffusion plate that the utility model embodiment 1 provides and intermediate Figure；

Fig. 2 is the partial enlarged view at A in Fig. 1；

Fig. 3 is the trip bolt of the connection structure of the diffusion plate that the utility model embodiment 1 provides and intermediate Structure diagram.

Embodiment

Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.

Shown in please referring to Fig.1 to Fig.3, in the present embodiment, a kind of connection structure of diffusion plate and intermediate includes diffusion plate 1 With intermediate 2, offer through hole 3 on the diffusion plate 1, the corresponding through hole 3 in offering threaded hole 4 on the intermediate 2, Trip bolt 5, which passes through the through hole 3 and lock onto in the threaded hole 4, is fixed on diffusion plate 1 on intermediate 2, the fastening Screw 5 includes screw head 50 and forms externally threaded screw bar portion 51, and the radius of the screw head 50 is more than the spiral shell The outside diameter in nail rod portion 51, the 50 medial surface outer rim of screw head are extended with circle point to close to the side of the screw bar portion 51 Corner 52, the corners 52 is partially submerged into the diffusion plate 1 when the trip bolt 5 is locked, thus effective to reduce Gap between screw and diffusion plate 1.

Cylinder convex shoulder 53, the cylinder convex shoulder 53 are provided between the screw bar portion 51 and the screw head 50 It is close to the screw head 50 to set, the radius of the cylinder convex shoulder 53 is more than the radius of the screw bar portion 51, the spiral shell The radius of nail head 50 is more than the radius of the cylinder convex shoulder 53, and the through hole 3 is set for the cooperation cylinder convex shoulder 53 Stepped hole, the one side wall of the cylinder convex shoulder 53 is resisted against the step surface of the stepped hole when trip bolt 5 is locked Upper formation sealing surface.

Above example is to elaborate the basic principle and characteristic of the utility model, and the utility model is from above-mentioned example Limitation, on the premise of not departing from the spirit and scope of the utility model, the utility model also has various changes, these changes Change and change and both fall within claimed the scope of the utility model.The utility model requires protection scope will by appended right Ask book and its equivalent thereof.

Claims

1. the connection structure of a kind of diffusion plate and intermediate, it includes diffusion plate and intermediate, is offered on the diffusion plate logical Hole, for the corresponding through hole in offering threaded hole on the intermediate, trip bolt is through the through hole and lock onto the spiral shell Diffusion plate is fixed on intermediate in pit, it is characterised in that the trip bolt includes screw head and forms outer spiral shell The screw bar portion of line, the radius of the screw head are more than the outside diameter of the screw bar portion, the screw head medial surface outer rim A circle corners is extended with to close to the side of the screw bar portion, the corners is partially submerged into when the trip bolt is locked In the diffusion plate.

2. the connection structure of diffusion plate according to claim 1 and intermediate, it is characterised in that the screw bar portion and institute State and cylinder convex shoulder is provided between screw head, the radius of the cylinder convex shoulder is more than the radius of the screw bar portion, institute The radius for stating screw head is more than the radius of the cylinder convex shoulder, the platform that the through hole is set for the cooperation cylinder convex shoulder Rank hole, during the trip bolt locking one side wall of the cylinder convex shoulder be resisted against on the step surface of the stepped hole formed it is close Front cover.

3. the connection structure of diffusion plate according to claim 2 and intermediate, it is characterised in that the cylinder convex shoulder is tight The screw head is pasted to set.