Polyurethane suspension and automobile vibration isolation assembly

Abstract

The utility model relates to a polyurethane suspension and automobile vibration isolation assembly which comprises an inner framework and an outer framework. The polyurethane vibration reduction piece is provided with an inner framework mounting hole which is through in the axis direction of the polyurethane vibration reduction piece, and the inner framework is fixedly bonded in the inner framework mounting hole; and the outer framework is provided with a vibration reduction part mounting hole which is through along the axis direction of the outer framework, and the polyurethane vibration reduction part is adhered and fixed in the vibration reduction part mounting hole. The polyurethane suspension has better vibration resistance and can resist transient impact of the suspension under the working conditions of tip in and tip out on the basis of better resilience, mechanical property and compression deformation of polyurethane, and has better heat resistance and corrosion resistance and longer service life on the basis of better stability and chemical resistance of polyurethane. The inner framework, the polyurethane vibration reduction piece and the outer framework are bonded together, so that the inner framework, the polyurethane vibration reduction piece and the outer framework can be tightly matched, and the vibration reduction effect of the polyurethane suspension is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a polyurethane suspension and automobile vibration isolation component. Background Art

[0002] With the development of automobile technology, the performance of automobiles is getting stronger and stronger, and the power and torque of automobile motors are also getting larger and larger. When the automobile is tipped in (pressing the accelerator quickly) or tipped out (pressing the accelerator gently), a strong suspension transient impact will be generated, making the fatigue condition of the suspension more demanding, and placing higher requirements on the material, size, etc. of the automobile suspension.

[0003] Based on the excellent properties of rubber such as excellent elasticity and tensile strength, automobile suspensions mostly use rubber as a material to absorb impact energy. However, the rubber suspensions currently on the market have gradually become difficult to adapt to the fatigue conditions of current automobiles. Under high-intensity suspension transient impacts, existing rubber suspensions are prone to fatigue failure, affecting the power output of the motor. Utility Model Content

[0004] Based on this, it is necessary to provide a polyurethane suspension and automobile vibration isolation assembly to address the problem that the existing automobile suspension is difficult to adapt to high-intensity suspension transient impact.

[0005] A polyurethane suspension, comprising:

[0006] Endoskeleton;

[0007] A polyurethane vibration damper, wherein the polyurethane vibration damper has an inner frame mounting hole extending through the inner frame mounting hole along the axial direction of the polyurethane vibration damper, and the inner frame is adhesively fixed in the inner frame mounting hole; and

[0008] The exoskeleton has a vibration-damping component mounting hole that penetrates along the axial direction of the exoskeleton, and the polyurethane vibration-damping component is adhesively fixed in the vibration-damping component mounting hole.

[0009] In one embodiment, the inner skeleton includes a skeleton body and a plurality of limiting protrusions protruding from the skeleton body, the plurality of limiting protrusions are arranged at intervals around the skeleton body, the polyurethane vibration damper has a plurality of matching grooves arranged at intervals, the matching grooves are recessed outward from the hole wall of the inner skeleton mounting hole, and the limiting protrusions are embedded in the matching grooves.

[0010] In one embodiment, the inner frame has four limiting protrusions, and the limiting protrusions are evenly spaced around the frame body.

[0011] In one embodiment, the polyurethane vibration damper includes an inner vibration damper portion bonded and fixed to the inner frame, an outer vibration damper portion bonded and fixed to the outer frame, and a plurality of connecting arms connecting the inner vibration damper portion and the outer vibration damper portion, wherein the connecting arms are arranged at intervals to form a vibration damping hole between two adjacent connecting arms.

[0012] In one embodiment, the thickness of the connecting arm is smaller than the thickness of the inner vibration-damping portion and the thickness of the outer vibration-damping portion, so as to form vibration-damping grooves on both sides of the connecting arm.

[0013] In one of the embodiments, the polyurethane vibration damping member includes a plurality of vibration damping protrusions respectively arranged in the vibration damping holes, and the vibration damping protrusions protrude from the outer vibration damping portion into the vibration damping hole.

[0014] In one embodiment, the thickness of the inner vibration damping portion is greater than the thickness of the outer vibration damping portion.

[0015] In one embodiment, the vibration damping holes include a pair of first vibration damping holes centrally symmetrically arranged on the polyurethane vibration damping member and a pair of second vibration damping holes centrally symmetrically arranged on the polyurethane vibration damping member, the first vibration damping holes and the second vibration damping holes are alternately arranged at intervals, and the size of the first vibration damping holes is larger than the size of the second vibration damping holes.

[0016] In one embodiment, the inner skeleton has an axial hole penetrating along the axial direction and a keyway opened in the hole wall of the axial hole.

[0017] An automobile vibration isolation assembly, comprising:

[0018] Suspension bracket;

[0019] The polyurethane suspension as described in any one of the above is installed on the suspension bracket.

[0020] The polyurethane suspension has better anti-vibration capability based on the good resilience, mechanical properties and compression deformation of polyurethane, and can resist the transient impact of suspension under the tip-in and tip-out conditions of the automobile. Based on the good stability and chemical resistance of polyurethane, it has better heat resistance, corrosion resistance and longer service life. The inner frame, polyurethane vibration damping member and outer frame are bonded together, so that the inner frame, polyurethane vibration damping member and outer frame can be closely matched, thereby improving the vibration damping effect of the polyurethane suspension. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional schematic diagram of a vehicle vibration isolation assembly provided in one embodiment of the present application;

[0022] Figure 2A three-dimensional schematic diagram of a polyurethane suspension of an automobile vibration isolation assembly according to the above embodiment of the present application is shown;

[0023] Figure 3 A schematic plan view of a polyurethane suspension of an automobile vibration isolation assembly according to the above embodiment of the present application is shown;

[0024] Figure 4 A cross-sectional schematic diagram of a polyurethane suspension of an automobile vibration isolation assembly according to the above embodiment of the present application is shown;

[0025] Figure 5 A schematic plan view of a polyurethane-suspended inner frame of an automobile vibration isolation assembly according to the above embodiment of the present application is shown;

[0026] Figure 6 A schematic plan view of a polyurethane vibration damping member of a polyurethane suspension of an automobile vibration isolation assembly according to the above embodiment of the present application is shown;

[0027] Figure 7 A schematic plan view of an exoskeleton of a polyurethane suspension of an automobile vibration isolation assembly according to the above embodiment of the present application is shown.

[0028] Figure numerals: 10, polyurethane suspension; 11, inner frame; 111, frame body; 112, limiting protrusion; 113, shaft hole; 114, keyway; 12, polyurethane vibration damper; 121, inner frame mounting hole; 122, matching groove; 123, inner vibration damper; 124, connecting arm; 125, outer vibration damper; 126, vibration damping hole; 1261, first vibration damping hole; 1262, second vibration damping hole; 127, vibration damping groove; 128, vibration damping protrusion; 13, outer frame; 131, vibration damper mounting hole; 20, suspension bracket. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0035] For details, please refer to Figures 1 to 7 The present application provides a polyurethane suspension 10, which may include an inner frame 11, a polyurethane damper 12 and an outer frame 13. The polyurethane damper 12 has an inner frame mounting hole 121 that penetrates along its own axis, and the inner frame 11 is bonded and fixed in the inner frame mounting hole 121. The outer frame 13 has a damper mounting hole 131 that penetrates along its own axis, and the polyurethane damper 12 is bonded and fixed in the damper mounting hole 131. The inner frame 11 is used to connect with the rotating shaft of the motor, and the outer frame 13 is used to connect with the suspension bracket 20.

[0036] It is understandable that polyurethane has good resilience, mechanical properties and compression deformation, so that the polyurethane suspension 10 has better vibration resistance and can resist the transient impact of the suspension under the tip-in and tip-out conditions of the automobile. In addition, polyurethane also has good stability and chemical resistance, so that the polyurethane suspension 10 has better heat resistance and corrosion resistance and has a longer service life. The inner frame 11, the polyurethane vibration damping member 12 and the outer frame 13 are bonded together, so that the inner frame 11, the polyurethane vibration damping member 12 and the outer frame 13 can be closely matched, thereby improving the vibration reduction effect of the polyurethane suspension 10.

[0037] More specifically, if Figure 2 , Figure 5 and Figure 6 As shown, in one embodiment, the inner frame 11 includes a frame body 111 and a plurality of limiting protrusions 112 protruding from the frame body 111, the plurality of limiting protrusions 112 are arranged at intervals around the frame body 111, and the polyurethane vibration damper 12 has a plurality of matching grooves 122 arranged at intervals, the matching grooves 122 are recessed outward from the hole wall of the inner frame mounting hole 121, and the limiting protrusions 112 are embedded in the matching grooves 122. The limiting protrusions 112 and the matching grooves 122 are limitedly matched, which can prevent the relative displacement between the inner frame 11 and the polyurethane vibration damper 12, so that the impact on the inner frame 11 can be better transmitted to the polyurethane vibration damper 12, thereby improving the vibration damping ability of the polyurethane suspension 10.

[0038] For example, Figure 2 , Figure 5 and Figure 6 As shown, in one embodiment, the inner frame 11 has four limiting protrusions 112, and the limiting protrusions 112 are evenly spaced around the frame body 111. Such an arrangement can make the inner frame 11 and the polyurethane vibration damping member 12 fit more closely, and make the force of the polyurethane vibration damping member 12 more uniform.

[0039] In particular, if Figure 3 and Figure 4 As shown, in one embodiment, the polyurethane vibration damper 12 includes an inner vibration damper 123 bonded and fixed to the inner frame 11, an outer vibration damper 125 bonded and fixed to the outer frame 13, and a plurality of connecting arms 124 connecting the inner vibration damper 123 and the outer vibration damper 125, and the connecting arms 124 are arranged at intervals to form a vibration damping hole 126 between two adjacent connecting arms 124. In this way, the vibration damping hole 126 can improve the vibration damping ability of the polyurethane vibration damper 12, and when the polyurethane vibration damper 12 is impacted, the inner vibration damper 123 can deform into the vibration damping hole 126 to reduce the impact transmitted to the outer vibration damper 125.

[0040] Preferably, if Figure 3 , Figure 4 and Figure 6 As shown, in one embodiment, the thickness of the connecting arm 124 is less than the thickness of the inner vibration damping part 123 and the thickness of the outer vibration damping part 125, so as to form a vibration damping groove 127 on both sides of the connecting arm 124. In this way, the vibration damping groove 127 can improve the vibration damping ability of the polyurethane vibration damping member 12, and when the polyurethane vibration damping member 12 is subjected to axial impact, the inner vibration damping part 123 can deform into the vibration damping groove 127 to reduce the impact transmitted to the outer vibration damping part 125.

[0041] Preferably, if Figure 6 As shown, in one embodiment, the polyurethane vibration damping member 12 includes a plurality of vibration damping protrusions 128 respectively arranged in the vibration damping holes 126, and the vibration damping protrusions 128 protrude from the outer vibration damping part 125 into the vibration damping hole 126. In this way, the vibration damping protrusions 128 are used to increase the thickness of the outer vibration damping part 125, and can enhance the structural strength of the outer vibration damping part 125.

[0042] Preferably, if Figure 4 As shown, in one embodiment, the thickness of the inner vibration damping part 123 is greater than the thickness of the outer vibration damping part 125. In this way, the inner vibration damping part 123 and the inner frame 11 are more closely matched by increasing the contact area between the inner vibration damping part 123 and the inner frame 11.

[0043] For example, Figure 6As shown, in one embodiment, the vibration-damping hole 126 includes a pair of first vibration-damping holes 1261 centrally symmetrically arranged on the polyurethane vibration-damping member 12 and a pair of second vibration-damping holes 1262 centrally symmetrically arranged on the polyurethane vibration-damping member 12. The first vibration-damping holes 1261 and the second vibration-damping holes 1262 are alternately arranged at intervals, and the size of the first vibration-damping holes 1261 is larger than the size of the second vibration-damping holes 1262. The first vibration-damping holes 1261 can produce more deformation, thereby absorbing more impact. By alternately arranging the first vibration-damping holes 1261 and the second vibration-damping holes 1262 at intervals, the layout of the vibration-damping holes 126 of the polyurethane vibration-damping member 12 is more reasonable, covering more area, and improving the deformation capacity of the polyurethane vibration-damping member 12. In this way, the vibration-damping capacity of the polyurethane vibration-damping member 12 can be improved.

[0044] In particular, if Figure 4 As shown, the inner frame 11 has an axial hole 113 extending through the inner frame 111 along the axial direction and a keyway 114 formed in the wall of the axial hole 113. The axial hole 113 and the keyway 114 are used to cooperate with the rotating shaft and key of the motor, so that the inner frame 11 and the rotating shaft of the motor can rotate synchronously.

[0045] Furthermore, if Figure 1 As shown, the present application also provides an automobile vibration isolation assembly, which may include a suspension bracket 20 and a polyurethane suspension 10 as described in any one of the above claims. The polyurethane suspension 10 is installed on the suspension bracket 20. The automobile vibration isolation assembly is capable of resisting the transient impact of the suspension under the tip-in and tip-out conditions of the automobile, and has a long service life and a vibration reduction effect.

[0046] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A polyurethane suspension, characterized in that: include: Endoskeleton; A polyurethane vibration damper, wherein the polyurethane vibration damper has an inner frame mounting hole extending through the inner frame along its own axial direction, and the inner frame is adhesively fixed in the inner frame mounting hole; as well as The exoskeleton has a vibration-damping component mounting hole that penetrates along the axial direction of the exoskeleton, and the polyurethane vibration-damping component is adhesively fixed in the vibration-damping component mounting hole.

2. The polyurethane suspension according to claim 1, characterized in that: The inner frame includes a frame body and a plurality of limiting protrusions protruding from the frame body, the plurality of limiting protrusions are arranged at intervals around the frame body, the polyurethane vibration damper has a plurality of matching grooves arranged at intervals, the matching grooves are recessed outward from the hole wall of the inner frame mounting hole, and the limiting protrusions are embedded in the matching grooves.

3. The polyurethane suspension according to claim 2, characterized in that: The inner frame has four limiting protrusions, and the limiting protrusions are evenly spaced around the frame body.

4. The polyurethane suspension according to claim 1, characterized in that: The polyurethane vibration damper comprises an inner vibration damper part bonded and fixed to the inner frame, an outer vibration damper part bonded and fixed to the outer frame, and a plurality of connecting arms connecting the inner vibration damper part and the outer vibration damper part, wherein the connecting arms are arranged at intervals to form a vibration damping hole between two adjacent connecting arms.

5. The polyurethane suspension according to claim 4, characterized in that: The thickness of the connecting arm is smaller than the thickness of the inner vibration-damping part and the thickness of the outer vibration-damping part, so as to form vibration-damping grooves on both sides of the connecting arm.

6. The polyurethane suspension according to claim 4, characterized in that: The polyurethane vibration damping member includes a plurality of vibration damping protrusions respectively arranged in the vibration damping holes, and the vibration damping protrusions protrude from the outer vibration damping portion into the vibration damping hole.

7. The polyurethane suspension according to claim 4, characterized in that: The inner vibration damping portion has a thickness greater than that of the outer vibration damping portion.

8. The polyurethane suspension according to claim 4, characterized in that: The vibration damping holes include a pair of first vibration damping holes centrally symmetrically arranged on the polyurethane vibration damping member and a pair of second vibration damping holes centrally symmetrically arranged on the polyurethane vibration damping member. The first vibration damping holes and the second vibration damping holes are alternately arranged at intervals, and the size of the first vibration damping holes is larger than that of the second vibration damping holes.

9. The polyurethane suspension according to claim 1, characterized in that: The inner frame has an axial hole penetrating along the axial direction and a keyway opened on the hole wall of the axial hole.

10. An automobile vibration isolation assembly, characterized in that: include: Suspension bracket; The polyurethane suspension according to any one of claims 1 to 9, wherein the polyurethane suspension is mounted on the suspension bracket.

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