CN210661188U - Axial hydraulic bushing of rear auxiliary frame and automobile rear auxiliary frame assembly - Google Patents

Abstract

The utility model discloses a back sub vehicle frame axial hydraulic pressure bush and car back sub vehicle frame assembly, wherein back sub vehicle frame axial hydraulic pressure bush includes axial hydraulic pressure bush body, axial hydraulic pressure bush body includes the inner frame, outer skeleton, the stopper and the rubber body that is used for interconnect between inner frame and the outer skeleton, the internal downside of rubber and tip apron subassembly interior side between the ring are equipped with and hold the cavity, the ring is equipped with the throttle plate between rubber body and inner frame and the tip apron subassembly, the throttle plate evenly is equipped with the orifice, it is first hydraulic working chamber to hold cavity upper portion, it is second hydraulic working chamber to hold the cavity lower part, the throttle plate is located between first hydraulic working chamber and the second hydraulic working chamber, the throttle plate downside extends to cover and is connected with the rubber diaphragm. The utility model discloses back sub vehicle frame axial hydraulic pressure bush plays the better damping and falls the effect of making an uproar to can effectively improve the carriage shake condition, eliminate the phenomenon of rumbling, improve the NVH level.

Description

Axial hydraulic bushing of rear auxiliary frame and automobile rear auxiliary frame assembly

Technical Field

The utility model relates to a back sub vehicle frame axial hydraulic pressure bush especially relates to a back sub vehicle frame axial hydraulic pressure bush that produces higher resistance.

The utility model relates to a sub vehicle frame assembly behind the car especially relates to a sub vehicle frame assembly behind car that improves carriage shake condition.

Background

As shown in fig. 1, the conventional rear subframe assembly 01 (with a bush) is mainly used for connecting various scattered suspension elements, and after a large-assembly rear suspension assembly 02 (with a brake and a main damper) is formed, the conventional rear subframe assembly is connected to a vehicle body through 4 mounting points 03, so that the impact of road vibration on the vehicle body can be weakened, the connection rigidity of a suspension system is improved, the comfort and the stability in the driving process of the vehicle are improved, and the driving performance of a chassis is more compact, as shown in fig. 2 to 5, the conventional rear suspension assembly (with the brake and the main damper) comprises a rear subframe welding part 04, a rear subframe front rubber bush 05 and a rear subframe rear rubber bush 06, the rear subframe front rubber bush 05 is press-fitted to a front sleeve 07 of the rear subframe welding part, and the rear subframe rear rubber bush 06 is press-fitted to a rear sleeve 08 of the rear subframe welding part; as shown in fig. 6 to 9, the front rubber bushing 05 of the rear subframe is mainly configured to integrally connect the first rubber 011 with the first inner frame 010 and the first outer frame 09 by vulcanization; as shown in fig. 10 to 13, the rear rubber bushing 06 of the rear subframe is mainly formed by integrally connecting a second rubber 014, a second inner frame 013 and a second outer frame 012 through vulcanization, and stoppers 015 are press-fitted to upper and lower ends of the inner frame 013.

The existing rear auxiliary frame assembly has the following problems:

1. in the process of 50-80Km/h running of an automobile, the engine ignition knocking causes large angular acceleration fluctuation of a transmission system and residual dynamic unbalance of the transmission system, so that the vibration of the whole transmission system in the rotation direction is caused and is transmitted to the automobile body through mounting supports of the transmission system, and the vibration and the rolling of a carriage are caused;

2. the shaking of the carriage causes the silence level difference in the automobile cabin, and passengers complain;

3. the front bushing and the rear bushing of the auxiliary frame are not shared, the types of parts are multiple, and the development cost is high.

Disclosure of Invention

The utility model relates to a solve not enough among the prior art and accomplish, the utility model aims at providing a play better damping and fall the effect of making an uproar to can effectively improve the carriage shake condition, eliminate the phenomenon of rumbling, improve NVH horizontally back sub vehicle frame axial hydraulic pressure bush.

The utility model discloses a rear auxiliary frame axial hydraulic bushing, which comprises an axial hydraulic bushing body, wherein the axial hydraulic bushing body comprises an inner frame, an outer frame, a limiting block and a rubber body used for the interconnection between the inner frame and the outer frame, the limiting block is arranged at the upper end of the inner frame, the lower end of the inner frame is hermetically sleeved at the upper side of the middle part of a end cover plate component, the lower side of the rubber body is connected with the outer upper side of the end cover plate component and the lower side of the outer frame, the lower side of the rubber body is positioned at the upper part in the end cover plate component, a containing cavity is annularly arranged between the lower side of the rubber body and the upper side in the end cover plate component, a throttle plate is annularly arranged between the rubber body and the inner frame and the end cover plate component, the throttle plate is uniformly provided with a throttle hole, the upper part of the containing cavity is a first hydraulic, the throttle plate is located between the first hydraulic working chamber and the second hydraulic working chamber, liquid in the first hydraulic working chamber is communicated with liquid in the second hydraulic working chamber through a throttle hole, a rubber diaphragm is connected to the lower side of the throttle plate in an extending and covering mode, and the rubber diaphragm is located in the second hydraulic working chamber.

The utility model discloses a back sub vehicle frame axial hydraulic pressure bush can also be:

the throttle plate is n-shaped in longitudinal section from outside to inside, the throttle plate comprises a first longitudinal arm, a second longitudinal arm and a transverse arm, the upper end of the first longitudinal arm is fixed on the inner side of the transverse arm, the upper end of the second longitudinal arm is fixed on the outer side of the transverse arm, the throttle holes are uniformly arranged on the transverse arm, the transverse arm is positioned between the first hydraulic working chamber and the second hydraulic working chamber, a first flanging is arranged at the lower end part of the first longitudinal arm of the throttle plate in an inward extending mode, a second flanging is arranged at the lower end part of the second longitudinal arm of the throttle plate in an outward extending mode, the first flanging is connected between the lower side of the inner framework and the inner upper side of the end cover plate component, the second flanging is connected between the outer lower side of the rubber body and the outer upper side of the end cover plate component, and the rubber diaphragm is connected from the lower side of the second flanging to the middle upper part of the inner side of the first longitudinal arm, the throttle plate is connected between the rubber body and the inner framework and between the corresponding end cover plate assemblies through a first flanging and a second flanging respectively.

The inner side support is arranged in the second hydraulic working cavity in an annular mode, the outer side face of the inner side support is connected to the inner side face of the middle lower portion of the first longitudinal arm in a sealing mode, the bottom face of the inner side support is connected with the upper side of the end cover plate assembly in a sealing mode, and the rubber diaphragm extends from the lower side of the second flanging to the middle upper portion of the inner side of the first longitudinal arm of the throttle plate in a sealing mode and is connected to the upper side face of the inner side support.

And an outer side support is annularly arranged in the second hydraulic working cavity, is positioned on the inner side of the middle lower part of the second longitudinal arm, and is connected with the inner side of the corresponding rubber diaphragm.

The inner side face of the middle lower part of the first longitudinal arm is fixedly connected with the outer side face of the inner side support in a sealing mode through interference fit, and the outer side face of the outer side support is connected with the inner side face of the corresponding rubber diaphragm through press fitting.

The end cover plate assembly comprises a cover plate and a lateral seal plate which is covered on the upper side of the cover plate, the lower end of the inner framework is sleeved with a seal ring at the upper side of the middle part of the cover plate, the outer lower side of the rubber body is connected with the outer upper side of the lateral seal plate and between the lower sides of the outer frameworks, the first flanging is connected with the lower side of the inner framework and between the upper sides of the cover plate, the second flanging is connected with the rubber diaphragm connected with the lower side of the second flanging in a sealing mode, the throttle plate is connected with the rubber diaphragm and the rubber body are connected with the lateral seal plate and the cover plate in a sealing mode.

The lower end of the inner framework is arranged on the upper side of the middle part of the cover plate through an interference press-fitting sealing sleeve.

The first flanging is connected between the lower side of the inner framework and the inner upper side of the cover plate in a sealing mode through interference press-fitting, and the second flanging is connected between the inner lower side of the lateral sealing plate in a sealing mode through interference press-fitting.

The rubber body is connected between the inner framework and the outer framework in a vulcanization integrated mode, and the limiting block is arranged on the upper end of the inner framework in a pressing mode through interference fit.

The utility model discloses a rear auxiliary frame axial hydraulic bushing, which comprises an axial hydraulic bushing body, wherein the axial hydraulic bushing body comprises an inner frame, an outer frame, a limiting block and a rubber body used for the interconnection between the inner frame and the outer frame, the limiting block is arranged at the upper end of the inner frame, the lower end of the inner frame is hermetically sleeved at the upper side of the middle part of a end cover plate component, the lower side of the rubber body is connected with the outer upper side of the end cover plate component and the lower side of the outer frame, the lower side of the rubber body is positioned at the upper part in the end cover plate component, a containing cavity is annularly arranged between the lower side of the rubber body and the upper side in the end cover plate component, a throttle plate is annularly arranged between the rubber body and the inner frame and the end cover plate component, the throttle plate is uniformly provided with a throttle hole, the upper part of the containing cavity is a first hydraulic, the throttle plate is located between the first hydraulic working chamber and the second hydraulic working chamber, liquid in the first hydraulic working chamber is communicated with liquid in the second hydraulic working chamber through a throttle hole, a rubber diaphragm is connected to the lower side of the throttle plate in an extending and covering mode, and the rubber diaphragm is located in the second hydraulic working chamber. Thus, the inner framework and the outer framework are connected with each other through the rubber body, the limiting block is annularly arranged at the upper end of the inner framework and used for increasing the contact area of the installation surface between the axial hydraulic bushing body and the automobile frame and reducing the contact stress, a containing cavity is arranged between the rubber body and the end cover plate assembly and is divided into a first hydraulic working cavity and a second hydraulic working cavity through a throttle plate, the first hydraulic working cavity is positioned at the upper side of the second hydraulic working cavity, the lower side of the throttle plate extends to cover and is connected with a rubber diaphragm, the rubber diaphragm is used for adjusting the damping force of liquid flowing in the second hydraulic working cavity, when the axial hydraulic bushing body is loaded in the Z direction, the rubber body deforms to cause the volume change of the first hydraulic working cavity and drive the liquid in the first hydraulic working cavity to flow between the first hydraulic working cavity and the second hydraulic working cavity through throttle holes uniformly distributed on the throttle plate, the rubber diaphragm that is arranged in the second hydraulic working chamber is impacted to produce the resistance, play better damping and fall the effect of making an uproar, simultaneously to the quantity and the aperture size of orifice, adjust the axial dynamic stiffness and the loss angle that hydraulic bushing was adjusted to the thickness of orifice, and the axial hydraulic bushing body is compared traditional rubber bush, and the axial hydraulic bushing body has better dynamic characteristic.

The utility model discloses a back sub vehicle frame axial hydraulic pressure bush, the advantage that has for prior art is: the vibration reduction and noise reduction effects are better, so that the vibration condition of a carriage can be effectively improved, the rolling phenomenon is eliminated, and the NVH level is improved.

Another object of the utility model is to provide a contain the aforesaid and play better damping and fall the effect of making an uproar to can effectively improve the carriage shake condition, eliminate the rumble phenomenon, improve a car back sub vehicle frame assembly of NVH horizontally back sub vehicle frame axial hydraulic pressure bush.

The utility model discloses a rear auxiliary frame assembly of an automobile, which comprises a rear auxiliary frame welding piece and four rear auxiliary frame axial hydraulic bushings, wherein the rear auxiliary frame welding piece comprises a rear auxiliary frame rear support and two rear auxiliary frame front supports, the rear end parts of the rear auxiliary frame front supports are respectively fixed on the front parts of the left and right ends of the rear auxiliary frame rear support, the two rear auxiliary frame axial hydraulic bushings are respectively vertically sleeved on the left and right ends of the rear auxiliary frame rear support, the other two rear auxiliary frame axial hydraulic bushings are respectively vertically sleeved on the front end parts of the two rear auxiliary frame front supports, the four rear auxiliary frame axial hydraulic bushings respectively comprise axial hydraulic bushing bodies, each axial hydraulic bushing body comprises an inner frame, an outer frame, a limiting block and a rubber body used for mutual connection between the inner frame and the outer frame, the limiting block is arranged at the upper end of the inner frame, the lower end of the inner framework is sleeved on the upper side of the middle part of the end cover plate component in a sealing manner, the outer lower side of the rubber body is connected with the outer upper side of the end cover plate component and the lower side of the outer framework, the inner lower side of the rubber body is positioned at the inner upper part of the end cover plate component, a containing cavity is arranged between the inner lower side of the rubber body and the inner upper side of the end cover plate component in a surrounding manner, a throttle plate is arranged between the rubber body and the inner framework and between the end cover plate component and the end cover plate component in a surrounding manner, throttle holes are uniformly formed in the throttle plate, the upper part of the containing cavity is a first hydraulic working cavity, the lower part of the containing cavity is a second hydraulic working cavity, the throttle plate is positioned between the first hydraulic working cavity and the second hydraulic working cavity, liquid in the first hydraulic working cavity and liquid in the, the rubber diaphragm is positioned in the second hydraulic working cavity. Thus, the left and right ends of the rear subframe rear support and the front end part of the rear subframe front support of the rear subframe welding piece are respectively and vertically connected with a rear subframe axial hydraulic bushing, the rear subframe axial hydraulic bushing comprises an axial hydraulic bushing body, when the axial hydraulic bushing body is loaded in the Z direction, the rubber body deforms to cause the volume change of a first hydraulic working cavity, liquid in the first hydraulic working cavity is driven to flow between the first hydraulic working cavity and a second hydraulic working cavity through throttling holes uniformly distributed on a throttling plate, and a rubber diaphragm in the second hydraulic working cavity is impacted, so that resistance is generated, good vibration and noise reduction effects are achieved, meanwhile, the axial dynamic stiffness and the loss angle of the hydraulic bushing are adjusted by adjusting the thickness of the throttling holes, and compared with the traditional rubber bushing, the axial hydraulic bushing body is more suitable for the traditional rubber bushing, the axial hydraulic bushing body has better dynamic characteristics, the rubber bushings on the front support and the rear support of the rear auxiliary frame of the traditional rear auxiliary frame are changed into the axial hydraulic bushing of the rear auxiliary frame, the axial hydraulic bushing of the rear auxiliary frame is along the vertical direction of the welding piece of the rear auxiliary frame, the welding piece of the rear auxiliary frame with the axial hydraulic bushing of the rear auxiliary frame not only provides better axial damping effect, thereby obtaining higher axial rigidity, the rear auxiliary frame welding piece with the rear auxiliary frame axial hydraulic bushing obviously improves the first-order noise of a transmission system in four, five and six gears, reduces the total noise sound pressure in a carriage, improves the mute level in an automobile cabin and basically eliminates the phenomenon that passengers feel rumble subjectively; the back sub vehicle frame seam piece that has back sub vehicle frame axial hydraulic pressure bush can conveniently replace sub vehicle frame rubber bush behind the current independent suspension, and preceding, the back bush sharing of back sub vehicle frame, reducible part number reduces assembly fixture quantity, realizes platformization and reduce cost. The utility model discloses a sub vehicle frame assembly behind car, the advantage that has for prior art is: the vibration reduction and noise reduction effects are better, so that the vibration condition of a carriage can be effectively improved, the rolling phenomenon is eliminated, and the NVH level is improved.

Drawings

FIG. 1 is a schematic view of a prior art assembly of a rear subframe assembly and a rear suspension assembly of a vehicle.

FIG. 2 is a top plan view of a rear subframe assembly of a prior art vehicle.

FIG. 3 is a perspective view of a rear subframe assembly of a prior art vehicle.

FIG. 4 is a top view of a rear subframe weldment of a rear subframe assembly of a prior art vehicle.

FIG. 5 is a rear subframe weldment view of a rear subframe assembly of a prior art automotive vehicle.

FIG. 6 is a perspective view of a rear subframe front rubber bushing of a prior art automotive rear subframe assembly.

FIG. 7 is a cut away view of the rear subframe front rubber bushing of FIG. 6.

FIG. 8 is a top view of the rear subframe front rubber bushing of FIG. 6.

FIG. 9 is a bottom view of the rear subframe front rubber bushing of FIG. 6.

FIG. 10 is a perspective view of a rear subframe rear rubber bushing of a prior art automotive rear subframe assembly.

FIG. 11 is a cut away view of the rear rubber bushing of the rear subframe of FIG. 10.

FIG. 12 is a top view of the rear subframe rear rubber bushing of FIG. 10.

FIG. 13 is a bottom view of the rear subframe rear rubber bushing of FIG. 10.

Fig. 14 is a plan view of the rear subframe assembly of the vehicle according to the present invention.

Fig. 15 is a perspective view of the rear subframe assembly of the vehicle according to the present invention.

FIG. 16 is an exploded view of the rear sub-frame assembly of the utility model

Fig. 17 is a perspective view of the rear sub frame axial hydraulic bushing of the rear sub frame assembly of the utility model.

FIG. 18 is a cut-away view of the rear subframe axial hydraulic bushing of FIG. 17.

Fig. 19 is a partially enlarged view of the area a in fig. 18.

FIG. 20 is a top view of the rear subframe axial hydraulic bushing of FIG. 17.

FIG. 21 is a bottom view of the rear subframe axial hydraulic bushing of FIG. 17.

Description of the figures

100 … axial hydraulic bushing body 101 … inner frame 102 … outer frame

103 … stopper 104 … rubber body 105 … throttle plate

106 … first trailing arm 107 … second trailing arm 108 … transverse arm

109 … first hydraulic working chamber 110 … second hydraulic working chamber 111 … rubber diaphragm

112 … first flange 113 … second flange 114 … inner support

115 … outside leg 116 … orifice 117 … fluid

120 … end closure plate assembly 121 … closure plate 122 … lateral closure plate

200 … rear subframe weldment 201 … rear subframe rear bracket 202 … rear subframe front bracket

203 … support sleeve

Detailed Description

A rear sub frame axial hydraulic bushing and a rear sub frame assembly of an automobile according to the present invention will be described in further detail with reference to fig. 14 to 20 of the drawings.

The utility model relates to a rear sub-frame axial hydraulic bushing, please refer to fig. 14 to fig. 20, comprising an axial hydraulic bushing body 100, the axial hydraulic bushing body 100 comprises an inner frame 101, an outer frame 102, a stopper 103 and a rubber body 104 for interconnecting the inner frame 101 and the outer frame 102, the stopper 103 is arranged at the upper end of the inner frame 101, the lower end of the inner frame 101 is hermetically sleeved at the upper side of the middle part of an end cover plate assembly 120, the lower outer side of the rubber body 104 is connected with the upper outer side of the end cover plate assembly 120 and the lower side of the outer frame 102, the lower inner side of the rubber body 104 is arranged at the upper inner part of the end cover plate assembly 120, an accommodating cavity is arranged between the lower inner side of the rubber body 104 and the upper inner side of the end cover plate assembly 120, a throttle plate 105 is arranged between the rubber body 104 and the inner frame 101 and the end cover plate assembly 120, the throttle plate 105 is, the upper portion of the accommodating cavity is a first hydraulic working cavity 109, the lower portion of the accommodating cavity is a second hydraulic working cavity 110, the throttle plate 105 is located between the first hydraulic working cavity 109 and the second hydraulic working cavity 110, liquid 117 in the first hydraulic working cavity 109 is communicated with liquid 117 in the second hydraulic working cavity 110 through a throttle hole 116, a rubber diaphragm 111 is connected to the lower side of the throttle plate 105 in an extending and covering mode, and the rubber diaphragm 111 is located in the second hydraulic working cavity 110. Specifically, the inner frame 101 and the outer frame 102 are connected with each other through the rubber body 104, the limiting block 103 is annularly arranged at the upper end of the inner frame 101 and used for increasing the contact area of the installation surface between the axial hydraulic bushing body 100 and the automobile frame and reducing the contact stress, an accommodating cavity is arranged between the rubber body 104 and the end cover plate assembly 120 and is divided into a first hydraulic working cavity 109 and a second hydraulic working cavity 110 through the throttle plate 105, the first hydraulic working cavity 109 is located on the upper side of the second hydraulic working cavity 110, the lower side of the throttle plate 105 extends, covers and is connected with the rubber diaphragm 111, the rubber diaphragm 111 is used for adjusting the damping force of the liquid 117 flowing in the second hydraulic working cavity 110, when the axial hydraulic bushing body 100 is loaded in the Z direction, the rubber body 104 deforms to cause the volume change of the first hydraulic working cavity 109, and drives the liquid 117 in the first hydraulic working cavity 109 to flow in the first hydraulic working cavity 109 and the second hydraulic working cavity 110 through the throttle holes 116 evenly distributed on the throttle plate 105 The flow of the throttling holes 116 is changed into the flow of the throttling holes, the rubber diaphragm 111 in the second hydraulic working chamber 110 is impacted, so that resistance is generated, good vibration and noise reduction effects are achieved, meanwhile, the axial dynamic stiffness and the loss angle of the hydraulic bushing are adjusted by adjusting the thickness of the throttling plate 105, compared with the traditional rubber bushing, the axial hydraulic bushing body 100 has good dynamic characteristics, the number of the throttling holes 116 can be 2-6, 2-6 throttling holes can be uniformly distributed on the throttling plate 105 for the circumference, the aperture of each throttling hole can be 0.5-3 mm, and the thickness value of each throttling hole is larger than 2 mm. Compared with the prior art, the advantages are as follows: the vibration reduction and noise reduction effects are better, so that the vibration condition of a carriage can be effectively improved, the rolling phenomenon is eliminated, and the NVH level is improved.

The utility model discloses a back sub vehicle frame axial hydraulic pressure bush, please refer to fig. 14 to fig. 20 and show, can also be on the basis of the technical scheme of preceding description: the throttle plate 105 is n-shaped in longitudinal section from outside to inside, the throttle plate 105 comprises a first longitudinal arm 106, a second longitudinal arm 107 and a transverse arm 108, the upper end of the first longitudinal arm is fixed on the inner side of the transverse arm 108, the upper end of the second longitudinal arm 107 is fixed on the outer side of the transverse arm 108, the throttle holes 116 are uniformly arranged on the transverse arm 108, the transverse arm 108 is positioned between the first hydraulic working chamber 109 and the second hydraulic working chamber 110, the lower end of the first longitudinal arm 106 of the throttle plate 105 is provided with a first flange 112 extending inwards, the lower end of the second longitudinal arm 107 of the throttle plate 105 is provided with a second flange 113 extending outwards, the first flange 112 is connected between the lower side of the inner frame 101 and the inner upper side of the end cover plate assembly 120, the second flange 113 is connected between the outer lower side of the rubber body 104 and the outer upper side of the end cover plate assembly 120, the rubber diaphragm 111 extends from the lower side of the second flange 113 to the middle upper part of the inner side of the first trailing arm 106 of the throttle plate 105, and the throttle plate 105 is connected between the rubber body 104 and the inner frame 101 and the corresponding end cover plate assembly 120 through the first flange 112 and the second flange 113 respectively. Thus, the first flange 112 is connected between the lower side of the inner frame 101 and the upper side of the end cover plate assembly 120, the second flange 113 is connected between the lower side of the rubber body 104 and the upper side of the end cover plate assembly 120, the throttle plate 105 is connected between the upper side of the rubber body 104 and the upper side of the end cover plate assembly 120 through the first flange 112, the throttle plate 105 is connected between the lower side of the inner frame 101 and the upper side of the end cover plate assembly 120 through the second flange 113, when the axial hydraulic bushing body 100 is loaded in the Z direction, the deformation of the rubber body 104 causes the volume change of the first hydraulic working chamber 109, and drives the liquid 117 in the first hydraulic working chamber 109 to flow between the first hydraulic working chamber 109 and the second hydraulic working chamber 110 through the orifices 116 uniformly distributed on the transverse arm 108, so as to impact the rubber diaphragm 111 in the second hydraulic working chamber 110, thereby generating resistance and playing a good role in vibration and noise reduction. The technical scheme is further preferable on the basis of the technical scheme described in the foregoing: an inner side support 114 is arranged in the second hydraulic working cavity 110 in an annular mode, the outer side face of the inner side support 114 is connected to the inner side face of the middle lower portion of the first longitudinal arm 106 in a sealing mode, the bottom face of the inner side support 114 is connected with the upper side of the end cover plate assembly 120 in a sealing mode, and the rubber diaphragm 111 extends from the lower side of the second flanging 113 to the middle upper portion of the inner side of the first longitudinal arm 106 of the throttle plate 105 and is connected to the upper side face of the inner side support 114 in a sealing mode. In this way, the inner side bracket 114 is arranged in the second hydraulic working chamber 110, the outer side surface of the inner side bracket 114 is hermetically connected with the inner side surface of the middle lower part of the first longitudinal arm, the bottom surface of the inner side bracket 114 is hermetically connected with the upper side of the end cover plate assembly 120, the upper side surface of the inner side bracket 114 is hermetically connected with the lower side surface of the rubber diaphragm 111, and the inner side bracket 114 is preferably used for sealing and preventing the second hydraulic working chamber 110 and preventing liquid leakage. The further preferable technical scheme on the basis of the technical scheme described above is as follows: an outer bracket 115 is arranged in the second hydraulic working chamber 110 in an inner ring manner, the outer bracket 115 is positioned on the inner side of the middle lower part of the second trailing arm 107, and the outer side surface of the outer bracket 115 is connected with the inner side surface of the corresponding rubber diaphragm 111. Thus, the outer holder 115 is provided in the second hydraulic working chamber 110, the outer side of the outer holder 115 is attached to the inner side of the corresponding rubber diaphragm 111, and the outer holder 115 is connected to the inner side of the rubber diaphragm 111 and acts on the rubber diaphragm 111 together with the throttle plate 105 to prevent the rubber diaphragm 111 from being wrinkled and deformed. The further preferable technical scheme on the basis of the technical scheme described above is as follows: the inner side surface of the middle lower part of the first trailing arm 106 is fixedly connected with the outer side surface of the inner side bracket 114 in a sealing manner through interference fit, and the outer side surface of the outer side bracket 115 is connected with the corresponding inner side surface of the rubber diaphragm 111 through press fitting. Therefore, the inner side face of the middle lower part of the first trailing arm 106 and the outer side face of the inner side support 114 are fixedly connected in a sealing mode through interference fit, the structure is simple, the bearing capacity is high, the outer side face of the outer side support 115 is connected with the inner side face of the corresponding rubber diaphragm 111 through press fitting, the assembling effect is good, the outer side support 115 and the throttle plate 105 act on the rubber diaphragm 111 together, and the rubber diaphragm 111 is prevented from being wrinkled and deformed.

The utility model discloses a back sub vehicle frame axial hydraulic pressure bush, please refer to fig. 14 to fig. 20 and show, can also be on the basis of the technical scheme of preceding description: the end cover plate assembly 120 comprises a cover plate 121 and a lateral cover plate 122, the lateral cover plate 122 is extended and connected from the outer upper side of the cover plate 121 to the outer lower side of the cover plate 121, the lower end of the inner frame 101 is sleeved on the upper side of the middle part of the cover plate 121 in a sealing manner, the outer lower side of the rubber body 104 is connected between the outer upper side of the lateral cover plate 122 and the lower side of the outer frame 102, the first flanging 112 is connected between the lower side of the inner frame 101 and the inner upper side of the cover plate 121 in a sealing manner, the second flanging 113 and the rubber diaphragm 111 connected with the lower side of the second flanging 113 are connected on the inner lower side of the lateral cover plate 122 in a sealing manner, and the throttle plate 105, the rubber diaphragm 111 and the rubber body 104 are connected with the. Thus, the lateral sealing plate 122 extends along the outer upper side of the cover plate 121 and the outer lower side of the lateral cover plate 121, the lateral sealing plate 122 is half covered on the outer upper side of the cover plate 121 and the outer lower side of the cover plate 121, the second flange 113 and the rubber diaphragm 111 connected with the lower side of the second flange 113 are hermetically connected to the inner lower side of the lateral sealing plate 122, and the throttle plate 105, the rubber diaphragm 111 and the rubber body 104 are hermetically connected with the cover plate 121 through the lateral sealing plate 122, so that the outer side of the bottom of the axial hydraulic bushing body 100 achieves a sealing effect. The further preferable technical scheme on the basis of the technical scheme described above is as follows: the lower end of the inner framework 101 is arranged on the upper side of the middle of the cover plate 121 through interference press-fitting and sealing sleeves. Therefore, the lower end of the inner framework 101 is arranged on the upper side of the middle part of the cover plate 121 through an interference press-fitting sealing sleeve and is in interference press-fitting sealing connection, the structure is simple, the bearing capacity is high, and the sealing effect is good. On the basis of the technical scheme described above, the method can also comprise the following steps: the first flanging 112 is connected between the lower side of the inner frame 101 and the inner upper side of the cover plate 121 through interference press-fitting sealing, and the second flanging 113 is connected to the inner lower side of the lateral sealing plate 122 through interference press-fitting sealing. Therefore, the first flanging 112 is connected between the lower side of the inner framework 101 and the inner upper side of the cover plate 121 in a sealing mode through interference press-fitting, and the second flanging 113 is connected to the inner lower side of the lateral sealing plate 122 in a sealing mode through interference press-fitting.

The utility model discloses a back sub vehicle frame axial hydraulic pressure bush, please refer to fig. 14 to fig. 20 and show, can also be on the basis of the technical scheme of preceding description: the rubber body 104 is integrally connected between the inner frame 101 and the outer frame 102 through vulcanization, and the limiting block 103 is press-fitted on the upper end of the inner frame 101 through interference fit. Like this, the rubber body 104 flows between inner frame 101 and exoskeleton 102 through the vulcanization integral type, treats that rubber body 104 meets the condensation and solidifies back rubber body 104 and inner frame 101 and exoskeleton 102 integral type and is connected, and stopper 103 passes through interference fit pressure fit and adorns on inner frame 101 upper end, simple structure, and the assembly is effectual.

The utility model relates to a rear sub-frame assembly of an automobile, please refer to fig. 14 to fig. 20, which comprises a rear sub-frame welding part 200 and four rear sub-frame axial hydraulic bushings, wherein the rear sub-frame welding part 200 comprises a rear sub-frame rear support 201 and two rear sub-frame front supports 202, the rear end parts of the two rear sub-frame front supports 202 are respectively fixed on the front parts of the left and right ends of the rear sub-frame rear support 201, the two rear sub-frame axial hydraulic bushings are respectively vertically sleeved on the left and right ends of the rear sub-frame rear support 201, the other two rear sub-frame axial hydraulic bushings are respectively vertically sleeved on the front end parts of the two rear sub-frame front supports 202, the four rear sub-frame axial hydraulic bushings respectively comprise axial hydraulic bushing bodies 100, each axial hydraulic bushing body 100 comprises an inner frame 101, an outer frame 102, a limiting block 103 and a rubber body 104 for mutual connection between the inner frame, the limiting block 103 is arranged at the upper end of the inner frame 101, the lower end of the inner frame 101 is hermetically sleeved at the upper side of the middle part of the end cover plate assembly 120, the outer lower side of the rubber body 104 is connected with the outer upper side of the end cover plate assembly 120 and the lower side of the outer frame 102, the inner lower side of the rubber body 104 is positioned at the inner upper part of the end cover plate assembly 120, an accommodating cavity is annularly arranged between the inner lower side of the rubber body 104 and the inner upper side of the end cover plate assembly 120, throttle plates 105 are annularly arranged between the rubber body 104 and the inner frame 101 and the end cover plate assembly 120, throttle plates 105 are uniformly provided with throttle holes 116, the upper part of the accommodating cavity is a first hydraulic working cavity 109, the lower part of the accommodating cavity is a second hydraulic working cavity 110, the throttle plates 105 are positioned between the first hydraulic working cavity 109 and the second hydraulic working cavity 110, and the liquid 117 in the first hydraulic working cavity 109 and the second hydraulic working cavity 110 are both communicated through the, a rubber diaphragm 111 is connected to the lower side of the throttle plate 105 in an extending manner, and the rubber diaphragm 111 is located in the second hydraulic working chamber 110. Thus, the left and right ends of the rear subframe rear bracket 201 and the front end of the rear subframe front bracket 202 of the rear subframe welding part 200 are respectively and vertically connected with a rear subframe axial hydraulic bushing, the rear subframe axial hydraulic bushing comprises an axial hydraulic bushing body 100, when the axial hydraulic bushing body 100 is loaded in the Z direction, the rubber body 104 deforms to cause the volume change of the first hydraulic working cavity 109, so as to drive the liquid 117 in the first hydraulic working cavity 109 to flow between the first hydraulic working cavity 109 and the second hydraulic working cavity 110 through the throttling holes 116 uniformly distributed on the throttling plate 105, so as to impact the rubber diaphragm 111 in the second hydraulic working cavity 110, thereby generating resistance, and playing a good role in vibration and noise reduction, and simultaneously, for the number and the aperture size of the throttling holes 116, the thickness of the throttling plate 105 is adjusted to adjust the axial dynamic stiffness and the loss angle of the hydraulic bushing, and compared with the conventional rubber bushing body 100, the axial hydraulic bushing body 100 has better dynamic characteristics, the rubber bushings on the front support 202 and the rear support 201 of the traditional rear subframe are changed into the axial hydraulic bushings of the rear subframe, the axial hydraulic bushings of the rear subframe are along the vertical direction of the welding part 200 of the rear subframe, the welding part 200 of the rear subframe with the axial hydraulic bushings of the rear subframe not only provides better axial damping effect, thereby obtaining higher axial rigidity, the rear subframe welding piece 200 with the rear subframe axial hydraulic bushing obviously improves the first-order noise of a transmission system in four, five and six gears, reduces the total noise sound pressure in a carriage, improves the mute level in an automobile cabin and basically eliminates the phenomenon that passengers feel rumble subjectively; the rear auxiliary frame welding part 200 with the rear auxiliary frame axial hydraulic bushing can conveniently replace the rubber bushing of the rear auxiliary frame of the existing independent suspension, and the front bushing and the rear bushing of the rear auxiliary frame are shared, so that the number of parts can be reduced, the number of assembly tools can be reduced, and the platform and the cost can be reduced. And support sleeves 203 are respectively arranged at the left end and the right end of the rear sub-frame rear support 201 and the front end parts of the two rear sub-frame front supports 202, two rear sub-frame axial hydraulic bushings are respectively vertically sleeved at the left end and the right end of the rear sub-frame rear support 201 through the corresponding support sleeves 203, and the other two rear sub-frame axial hydraulic bushings are respectively vertically sleeved at the front end parts of the two rear sub-frame front supports 202 through the corresponding support sleeves 203. Can also establish perpendicularly through the support sleeve 203 interference fit that corresponds respectively for two back sub vehicle frame axial hydraulic bush on the back sub vehicle frame rear support 201 left and right sides both ends, establish two respectively through the perpendicular cover of the support sleeve 203 interference fit that corresponds of two other back sub vehicle frame axial hydraulic bush back sub vehicle frame front truck frame 202 front end portion is last.

Use the utility model discloses afterwards, total noise acoustic pressure all improves in the front in the carriage back row, the utility model discloses with former scheme transmission shaft one-order total acoustic pressure sound contrast table see table 1, wherein front-seat drive system one-order noise improves and is at most 10dB, and well row of drive system one-order noise improves and is at most 9dB, and back-seat drive system one-order noise improves and is at most 10dB, the utility model discloses with former scheme transmission shaft one-order sound order chart contrast table 2.

Table 1 is the utility model discloses with the first-order total sound pressure sound contrast table of original scheme transmission shaft:

TABLE 1

Table 2 is the utility model discloses with the first-order sound order chart contrast table of original scheme transmission shaft:

TABLE 2

The above description is only for the purpose of illustration of several embodiments of the present invention, but should not be construed as an exclusive scope of the present invention, and all equivalent changes or modifications or proportional enlargements or reductions made according to the spirit of the present invention should be considered as falling within the scope of the present invention.

Claims (10)

1. The utility model provides a back sub vehicle frame axial hydraulic pressure bush which characterized in that: comprises an axial hydraulic bushing body (100), wherein the axial hydraulic bushing body (100) comprises an inner framework (101), an outer framework (102), a limiting block (103) and a rubber body (104) used for connecting the inner framework (101) and the outer framework (102) with each other, the limiting block (103) is arranged at the upper end of the inner framework (101), the lower end of the inner framework (101) is arranged at the upper side of the middle part of an end cover plate component (120) in a sealing way, the outer lower side of the rubber body (104) is connected with the outer upper side of the end cover plate component (120) and the lower side of the outer framework (102), the inner lower side of the rubber body (104) is positioned at the inner upper part of the end cover plate component (120), an accommodating cavity is annularly arranged between the inner lower side of the rubber body (104) and the inner upper side of the end cover plate component (120), and a throttle plate (105) is annularly arranged between the rubber body (104) and the inner framework (101), throttle plate (105) evenly are equipped with orifice (116), it is first hydraulic pressure working chamber (109) to hold cavity upper portion, it is second hydraulic pressure working chamber (110) to hold the cavity lower part, throttle plate (105) are located first hydraulic pressure working chamber (109) with between second hydraulic pressure working chamber (110), liquid (117) in first hydraulic pressure working chamber (109) all communicate through orifice (116) with liquid (117) in second hydraulic pressure working chamber (110), throttle plate (105) downside extends to cover and is connected with rubber diaphragm (111), rubber diaphragm (111) are located in second hydraulic pressure working chamber (110).

2. The rear sub frame axial hydraulic bushing of claim 1, wherein: the throttle plate (105) is n-shaped in longitudinal section from outside to inside, the throttle plate (105) comprises a first longitudinal arm (106), a second longitudinal arm (107) and a transverse arm (108), the upper end of the first longitudinal arm is fixed on the inner side of the transverse arm (108), the upper end of the second longitudinal arm (107) is fixed on the outer side of the transverse arm (108), throttle holes (116) are uniformly formed in the transverse arm (108), the transverse arm (108) is located between a first hydraulic working chamber (109) and a second hydraulic working chamber (110), a first flanging (112) extends inwards from the lower end of the first longitudinal arm (106) of the throttle plate (105), a second flanging (113) extends outwards from the lower end of the second longitudinal arm (107) of the throttle plate (105), and the first flanging (112) is connected between the lower side of the inner framework (101) and the inner upper side of the end cover plate component (120), the second flanging (113) is connected between the outer lower side of the rubber body (104) and the outer upper side of the end cover plate component (120), the rubber diaphragm (111) extends from the lower side of the second flanging (113) to the middle upper part of the inner side of the first longitudinal arm (106) of the throttle plate (105), and the throttle plate (105) is connected between the rubber body (104) and the end cover plate component (120) corresponding to the inner framework (101) through the first flanging (112) and the second flanging (113) respectively.

3. The rear sub frame axial hydraulic bushing of claim 2, wherein: an inner side support (114) is arranged on the inner ring of the second hydraulic working cavity (110), the outer side face of the inner side support (114) is connected to the inner side face of the middle lower portion of the first longitudinal arm (106) in a sealing mode, the bottom face of the inner side support (114) is connected with the upper side of the end cover plate assembly (120) in a sealing mode, and the rubber diaphragm (111) extends from the lower side of the second flanging (113) to the middle upper portion of the inner side of the first longitudinal arm (106) of the throttle plate (105) to be connected to the upper side face of the inner side support (114) in a sealing mode.

4. The rear sub frame axial hydraulic bushing of claim 3, wherein: an outer side support (115) is arranged in the second hydraulic working cavity (110) in an inner ring mode, the outer side support (115) is located on the inner side of the middle lower portion of the second longitudinal arm (107), and the outer side face of the outer side support (115) is connected with the inner side face of the corresponding rubber diaphragm (111).

5. The rear sub frame axial hydraulic bushing of claim 4, wherein: the inner side face of the middle lower part of the first longitudinal arm (106) is fixedly connected with the outer side face of the inner side support (114) in a sealing mode through interference fit, and the outer side face of the outer side support (115) is connected with the corresponding inner side face of the rubber diaphragm (111) through press fitting.

6. The rear sub frame axial hydraulic bushing according to any one of claims 2 to 5, wherein: the end closure plate assembly (120) comprising a closure plate (121) and a lateral closure plate (122), the lateral closing plates (122) extend along the outer upper side of the cover plate (121) to the outer lower side of the cover plate (121), the lower end of the inner framework (101) is sleeved on the upper side of the middle part of the cover plate (121) in a sealing way, the outer lower side of the rubber body (104) is connected between the outer upper side of the lateral sealing plate (122) and the lower side of the outer framework (102), the first flanging (112) is connected between the lower side of the inner framework (101) and the inner upper side of the cover plate (121) in a sealing way, the second flanging (113) and the rubber diaphragm (111) connected with the lower side of the second flanging (113) are hermetically connected to the inner lower side of the lateral sealing plate (122), the throttle plate (105), the rubber diaphragm (111) and the rubber body (104) are all connected with the cover plate (121) in a sealing mode through the lateral sealing plate (122).

7. The rear sub frame axial hydraulic bushing of claim 6, wherein: the lower end of the inner framework (101) is sleeved on the upper side of the middle part of the cover plate (121) in a sealing manner through interference press fitting.

8. The rear sub frame axial hydraulic bushing of claim 6, wherein: the first flanging (112) is connected between the lower side of the inner framework (101) and the inner upper side of the cover plate (121) in a sealing mode through interference press-fitting, and the second flanging (113) is connected between the inner lower side of the lateral sealing plate (122) in a sealing mode through interference press-fitting.

9. The rear sub frame axial hydraulic bushing according to any one of claims 1 to 5, wherein: the rubber body (104) is integrally connected between the inner framework (101) and the outer framework (102) through vulcanization, and the limiting block (103) is pressed on the upper end of the inner framework (101) through interference fit.

10. The utility model provides a sub vehicle frame assembly behind car which characterized in that: including back sub vehicle frame seam piece (200) and four back sub vehicle frame axial hydraulic bush, back sub vehicle frame seam piece (200) are including back sub vehicle frame after-poppet (201) and two back sub vehicle frame fore-stock (202), two back sub vehicle frame fore-stock (202) rear end portion is fixed respectively on both ends are anterior about back sub vehicle frame after-poppet (201), two back sub vehicle frame axial hydraulic bush is established perpendicularly respectively on both ends about back sub vehicle frame after-poppet (201), two in addition back sub vehicle frame axial hydraulic bush is established perpendicularly respectively and is established two on the preceding tip of back sub vehicle frame fore-stock (202), four back sub vehicle frame axial hydraulic bush be respectively claim 1 to 5 arbitrary one claim back sub vehicle frame axial hydraulic bush.

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