阅读说明：本技术 一种发动机及其节气门的减振结构 (Engine and vibration reduction structure of throttle valve thereof ) 是由 邱德财 邹世琛 刘斐 董瑞谦 姜健强 李栋 沈峰 喻秉嵘 于 2020-04-16 设计创作，主要内容包括：本发明公开一种发动机及其节气门的减振结构,该减振结构包括弹性管和支架；其中,所述弹性管的两侧管端分别与发动机进气岐管和节气门连接；所述支架用于固定设置,且所述支架具有与节气门连接的多个弹性连接部。应用本方案,可确保节气门的各连接点均为可吸收振动的弹性连接,从而能够有效降低进气岐管传递至节气门的振动；另外,基于支架的支撑作用,可有效规避节气门连接件在振动传递过程中可能出现的损坏问题,在获得良好减振性能的基础上,具有较好的安装可靠性。(The invention discloses an engine and a vibration damping structure of a throttle valve thereof, wherein the vibration damping structure comprises an elastic pipe and a bracket; the pipe ends of two sides of the elastic pipe are respectively connected with an engine intake manifold and a throttle valve; the support is used for fixed setting, and the support has a plurality of elastic connection portion of being connected with the throttle valve. By applying the scheme, all the connection points of the throttle valve can be ensured to be elastic connection capable of absorbing vibration, so that the vibration transmitted to the throttle valve by the air inlet manifold can be effectively reduced; in addition, based on the supporting function of the bracket, the problem of possible damage of the throttle connecting piece in the vibration transmission process can be effectively avoided, and the installation reliability is better on the basis of obtaining good vibration reduction performance.)

1. A vibration damping structure of an engine throttle valve, characterized by comprising:

the pipe ends at two sides of the elastic pipe are respectively connected with an engine intake manifold and a throttle valve;

the support is used for being fixedly arranged and is provided with a plurality of elastic connecting parts connected with the throttle valve.

2. The vibration damping structure of an engine throttle valve according to claim 1, characterized in that the throttle valve comprises a throttle body and a throttle joint on a connection side of the throttle body; the engine intake manifold and the throttle valve joint are respectively provided with an installation shaft shoulder, and the pipe ends at two sides of the elastic pipe are respectively sleeved and fixed on the corresponding installation shaft shoulders.

3. The vibration damping structure for an engine throttle valve according to claim 2, wherein fixing clips are provided externally to both side pipe ends of the elastic pipe in a sleeved manner.

4. The vibration damping structure for an engine throttle valve according to claim 3, characterized in that the bracket includes a stay for fixed connection and a stay is formed extending from the stay, a connection seat is provided at a projecting end of the stay, and an elastic sleeve forming the elastic connection part is fitted on the connection seat.

5. The vibration damping structure for an engine throttle valve according to claim 4, characterized in that the stay is formed extending from a plate body on a side of the stay plate near the throttle joint.

6. The vibration damping structure for an engine throttle valve according to claim 4, wherein the connecting base has a connecting hole opened in a direction perpendicular to a mounting surface of the throttle joint; the elastic sleeve comprises two groups of rigid cores and elastic outer sleeves which are nested inside and outside, the elastic outer sleeves are provided with peripheral surfaces matched with the connecting holes, the rigid cores are provided with threaded fastener penetrating holes, and the two groups of rigid cores and the elastic outer sleeves are respectively inserted into the connecting holes from two sides.

7. The vibration damping structure for an engine throttle valve according to claim 6, characterized in that the body outside end of the elastic sheath has a first shoulder that overlaps the outside end face of the attachment hole, and the body outside end of the rigid core has a second shoulder that overlaps the outside end of the elastic sheath.

8. The vibration damping structure for an engine throttle valve according to claim 7, wherein the inner ends of the bodies of the two elastic outer casings have a predetermined gap, and the inner ends of the bodies of the two rigid cores abut against each other.

9. The vibration damping structure for an engine throttle valve according to claim 8, characterized in that the elastic sleeve of the bracket is connected to a throttle joint by a threaded fastener, and the stay of the bracket is connected to a cylinder head or a block of the engine by a threaded fastener.

10. An engine comprising an intake manifold and a throttle valve, wherein a vibration damping structure of the engine throttle valve as set forth in any one of claims 1 to 9 is provided between the intake manifold and the throttle valve.

Technical Field

The invention relates to the technical field of assembly of engine components, in particular to an engine and a vibration damping structure of a throttle valve of the engine.

Background

At present, the arrangement modes of electronic throttle bodies are different based on the arrangement position limitation of an automobile engine in a whole automobile cabin. The common arrangement is to mount the electronic throttle body of the engine directly on the intake manifold of the engine, or on a dedicated bracket or other members.

Electronic throttle bodies are known to be precision electronic devices, and the arrangement mode of the electronic throttle bodies needs to be stable and reliable. The engine is used as a main source of vibration of the whole vehicle, the coverage range of self vibration frequency is wide, and the risk of possible resonance exists for parts arranged on the engine; the vibration amplitude and the vibration acceleration of the mounting point are large, and when the mounting point does not meet the mounting requirements of parts, the vibration can exceed the standard if the throttle valve is directly mounted through the rigid support, and finally the throttle valve is failed.

In view of the above, it is desirable to optimize the structure of the existing engine throttle valve to reduce the influence of the engine vibration on the performance of the engine throttle valve.

Disclosure of Invention

In order to solve the technical problem, the invention provides an engine and a vibration reduction structure of a throttle valve thereof, which are used for ensuring the stable reliability of the installation mode of the throttle valve.

The invention provides a vibration reduction structure of an engine throttle valve, which comprises an elastic pipe and a bracket; the pipe ends of two sides of the elastic pipe are respectively connected with an engine intake manifold and a throttle valve; the support is used for fixed setting, and the support has a plurality of elastic connection portion of being connected with the throttle valve.

Preferably, the throttle valve comprises a throttle body and a throttle joint located at the connection side of the throttle body; the engine intake manifold and the throttle body are respectively provided with an installation shaft shoulder, and the pipe ends at two sides of the elastic pipe are respectively sleeved and fixed on the corresponding installation shaft shoulders.

Preferably, the outer parts of the pipe ends at two sides of the elastic pipe are sleeved with fixing clamps.

Preferably, the support comprises a support plate fixedly connected with the support plate, a support rod is formed by extending the support plate, a connecting seat is arranged at the extending end of the support rod, and an elastic sleeve forming the elastic connecting part is embedded in the connecting seat.

Preferably, the stay is formed by extending from a plate body on a side of the fulcrum plate near the throttle joint.

Preferably, the connecting seat is provided with a connecting hole, and the connecting hole is formed in a direction perpendicular to the mounting surface of the throttle joint; the elastic sleeve comprises two groups of rigid cores and elastic outer sleeves which are nested inside and outside, the elastic outer sleeves are provided with peripheral surfaces matched with the connecting holes, the rigid cores are provided with threaded fastener penetrating holes, and the two groups of rigid cores and the elastic outer sleeves are respectively inserted into the connecting holes from two sides.

Preferably, the outer end of the body of the elastic outer sleeve is provided with a first shoulder lapped with the outer end face of the connecting hole, and the outer end of the body of the rigid core is provided with a second shoulder lapped with the outer end of the elastic outer sleeve.

Preferably, the inner ends of the bodies of the two elastic outer sleeves have preset gaps, and the inner ends of the bodies of the two rigid cores are abutted.

Preferably, the elastic sleeve of the bracket is connected with the throttle joint through a threaded fastener, and the support plate of the bracket is connected with an engine head or an engine body of the engine through a threaded fastener.

The invention also provides an engine, which comprises an intake manifold and a throttle valve, wherein the vibration damping structure of the engine throttle valve is arranged between the intake manifold and the throttle valve.

Compared with the prior art, the elastic pipe of this scheme adoption looks adaptation and the support combination that has elastic connection portion constitute the mounting structure who advances the throttle. Specifically, the two side pipe ends of the elastic pipe are respectively connected with an engine intake manifold and a throttle body, so that the elastic connection of the gas passage between the two is formed; the support is fixedly arranged on a cylinder cover or a machine body of the engine and is elastically connected with the throttle valve joint through a plurality of elastic connecting parts. Through the arrangement, all the connection points of the throttle valve are all elastic connections capable of absorbing vibration, so that the vibration transmitted to the throttle valve by the intake manifold can be effectively reduced; in addition, based on the supporting function of the bracket, the problem of possible damage of the throttle connecting piece in the vibration transmission process can be effectively avoided, and the installation reliability is better on the basis of obtaining good vibration reduction performance.

Drawings

FIG. 1 is an exploded view of a vibration damping structure of an engine throttle according to an embodiment;

FIG. 2 is a schematic structural view of the stent shown in FIG. 1;

FIG. 3 is a left side view of the bracket shown in FIG. 2;

fig. 4 is a sectional view a-a of fig. 3.

In the figure:

a throttle valve 10, a throttle body 101, a throttle joint 102, a mounting shoulder 1021, a through hole 1022, an intake manifold 20, a mounting shoulder 201;

the elastic tube 1, the bracket 2, the support plate 21, the stay bar 22, the connecting seat 23, the connecting hole 231, the elastic sleeve 3, the rigid core body 31, the penetrating hole 311, the second shoulder 312, the elastic outer sleeve 32, the first shoulder 321 and the fixing clamp 4.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

Without loss of generality, the present embodiment will describe in detail the specific configuration of the throttle damper structure, taking the engine throttle valve 10 and the intake manifold 20 shown in the drawings as a main description. It should be understood that the specific structure of the throttle valve and the self-structure of the intake manifold are not the core invention of the present application, and do not substantially limit the vibration damping structure of the engine throttle valve claimed in the present application.

Referring to fig. 1, the shock absorbing structure of the engine throttle valve according to the present embodiment is shown in exploded view.

As shown in the figure, the throttle damping structure mainly comprises an elastic tube 1 and a bracket 2 with an elastic connecting part (3). Wherein, the two side pipe ends of the elastic pipe 1 are respectively connected with an engine intake manifold 20 and a throttle valve 10, thereby forming elastic connection of a gas passage between the two; the bracket 2 is fixedly arranged, and particularly can be fixedly arranged on a cylinder cover or a machine body of an engine according to actual needs, and the bracket 2 is provided with a plurality of elastic connecting parts (3) connected with the throttle valve 10 and elastically connected with the throttle valve 10 through the elastic connecting parts (3). Through the arrangement, all the connection points of the throttle valve are all elastic connections capable of absorbing vibration, and the vibration transmitted to the throttle valve by the intake manifold can be reduced; meanwhile, the problem of possible damage of the throttle connecting piece in the vibration transmission process can be effectively avoided based on the supporting effect of the bracket.

Specifically, the throttle valve 10 includes a throttle body 101 for implementing a control function, and a throttle joint 102 located on a connection side of the throttle body 101, and the respective connection relationship between the throttle joint 102 and the elastic tube 1 and the elastic connection portion (3) is implemented.

In order to further improve the assembling workability, structural optimization may be made for the assembling members of the elastic tube 1. As shown in fig. 1, the connection portion of the intake manifold 20 is provided with a mounting shoulder 201, the connection portion of the throttle joint 102 is provided with a mounting shoulder 1021, and accordingly, both side pipe ends of the elastic pipe 1 are respectively fitted and fixed to the mounting shoulder 201 and the mounting shoulder 1021, thereby forming an elastic connection of the air passage therebetween. Of course, the throttle body 102 has a through hole 1022 for maintaining the flow of air.

Here, the fixed connection relationship between the pipe ends of both sides of the elastic pipe 1 and the mounting shoulder may be achieved in different ways, as long as the above connection relationship is satisfied within the scope of the present application. For example, but not limited to, the outside of the pipe ends at both sides of the elastic pipe 1 is sleeved with the fixed clamps 4, and after the assembly is completed, the two fixed clamps 4 are used for fixing, thereby facilitating the detection and maintenance.

Further, the specific structure of the stent 2 preferably adopts an adaptive structural design, please refer to fig. 2 and fig. 3 together, wherein fig. 2 is a schematic structural view of the stent shown in fig. 1, and fig. 3 is a left side view of the stent shown in fig. 2.

As shown in the figure, the bracket 2 in the scheme comprises a support plate 21 fixedly connected with a cylinder cover or a machine body of an engine so as to form a stable structure matched with the mounting surface; a stay 22 is formed to extend from the stay 21 to be adapted to a physical distance between the intake manifold 20 and the throttle valve 10, a connection seat 23 is provided at an extending end of the stay 22, and an elastic sleeve 3 is fitted to the connection seat 23 to form the elastic connection portion. Has better assembly manufacturability.

In actual assembly, each elastic sleeve 3 of the bracket 2 is connected with the throttle joint 102 through a threaded fastener, and the support plate 21 of the bracket 2 is connected with an engine intake manifold through a threaded fastener, so that corresponding connection can be completed.

The stay 22 is formed by extending from a plate body of the stay 21 on the side close to the throttle joint.

The connecting base 23 has a connecting hole 231, wherein the connecting hole 231 is opened along a direction perpendicular to the mounting surface of the throttle valve joint 102, so that the assembling operation is convenient; specifically, the elastic sheath 3 comprises two sets of a rigid core 31 and an elastic sheath 32 nested inside and outside, the rigid core 31 being located on the inside and the elastic sheath 32 being located on the outside, see also fig. 4, which is a cross-sectional view a-a of fig. 3.

Referring to fig. 2, 3 and 4, the elastic sheath 32 has an outer circumferential surface adapted to the connection hole 231 of the connection holder 23, the rigid core 31 has a threaded fastener insertion hole 311, and the two sets of the rigid core 31 and the elastic sheath 32 are respectively inserted into the connection hole 231 of the connection holder 23 from both sides. The processing manufacturability is better, and the maintenance is conveniently carried out.

In order to further improve the assembly manufacturability and reduce the requirements for the assembler, the structure of the elastic sleeve 3 can be optimized. As shown in the figure, the outer end of the body of the elastic casing 32 is provided with a first shoulder 321, and the first shoulder 321 is overlapped with the outer end face of the connecting hole 231 to construct a limit relationship between the two; the outer end of the body of the rigid core 31 has a second shoulder 312, and the second shoulder 312 is overlapped with the outer end of the elastic jacket 32 to construct a limit relationship therebetween. During assembly, the assembling personnel can meet the design requirements by inserting in sequence.

In addition, the inner ends of the bodies of the two elastic outer sleeves 32 have a preset gap δ, and the inner ends of the bodies of the two rigid cores 31 are abutted to adapt to large working vibration, so that the possibility of damage to the bracket or the connecting piece is avoided to the maximum extent.

In addition to the vibration damping structure for the engine throttle valve described above, the present embodiment provides an engine including the intake manifold 20 and the throttle valve 10, and the vibration damping structure for the engine throttle valve described above is provided between the intake manifold 20 and the throttle valve 10. Specifically, the functions of the intake manifold 20, the throttle valve 10, the air chamber, and the like of the engine constitute non-core points of the invention, and those skilled in the art can implement the functions by using the prior art, so the description thereof is omitted.

It should be noted that the damping structure bracket 2 provided in the present embodiment is only a preferred exemplary illustration, and is not limited to the structure of the brace, the stay, the connecting seat, etc. shown in the drawings, and it should be understood that the invention is within the scope of the claims as long as the function requirement of the elastic connection can be satisfied.

It is specifically noted that, in the description of the present invention, the terms "inner" and "outer" are determined based on the illustrated relative positional relationship, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that a device or an element must have a specific orientation, and thus, should not be construed as limiting the present invention.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.