Rubber cushion, installation structure and method

Abstract

This invention discloses a rubber pad, its installation structure, and a method. The rubber pad includes a pad body with a through-hole. An annular flange extends inward from one end of the pad body within the inner hole. During installation, the annular flange elastically expands and deforms, thus tightly clamping itself onto a mating component passing through the inner hole. By providing an annular flange on the inner hole, when the mating component passes through, the annular flange is compressed and expanded, elastically clamping itself onto the mating component, thereby forming an anti-detachment structure. This prevents the rubber pad from falling off the mating component, allowing for control of only the mating component during movement and assembly, significantly improving installation efficiency.

Description

Technical Field

[0001] This invention relates to the field of cushion technology, specifically to a rubber cushion, installation structure, and method. Background Technology

[0002] Vibration isolation between two automotive parts is often achieved using soft pads. Rubber pads are a common structure, while cylindrical pads are frequently used in automotive cooling and exhaust systems. Cylindrical pads typically have a hole in the center, which is used to fit onto standard fasteners (such as bolts and studs) for tightening and vibration reduction.

[0003] For ease of installation, the size of the round hole is generally larger than the outer diameter of the standard fastener. This makes it easy for the rubber pad on the stud to fall off after it is tightened into the mounting hole, affecting subsequent installation steps. It is necessary to hold the pad by hand, and too much time and manpower are spent on positioning and preventing the pad from falling off during the parts assembly process, which affects efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a rubber pad, an installation structure and method that can be automatically fixed to the inserted mating part, i.e., the standard fastener, during installation without the need for manual positioning and anti-detachment.

[0005] To solve the above-mentioned technical problems, the present invention provides a rubber pad, including a pad body, wherein the pad body is provided with a through inner hole, and the pad body extends inward at one end of the inner hole to form an annular flange. During installation, the annular flange can elastically expand and deform, thereby tightly clamping onto the mating part passing through the inner hole.

[0006] Preferably, the inner diameter of the inner hole is larger than the outer diameter of the mating part, and the inner diameter of the annular flange is smaller than the outer diameter of the mating part.

[0007] In the aforementioned rubber pad structure, by setting an annular flange on the inner hole, when the mating part passes through the inner hole, the annular flange is squeezed and expanded, elastically clamping onto the mating part, thereby forming an anti-detachment structure to prevent the rubber pad from falling off the mating part. This allows only the mating part to be controlled during movement and assembly, greatly improving installation efficiency.

[0008] Furthermore, a sleeve is nested within the inner hole, the height of which is less than the depth of the inner hole. Preferably, the sleeve is fixed to the inner wall of the inner hole by vulcanization.

[0009] The sleeve can limit the overall compressible limit of the rubber pad, preventing damage to the rubber pad and also preventing excessive elasticity that could damage the parts.

[0010] Furthermore, the sleeve extends inward from the end of the inner bore away from the annular flange. Preferably, a gap is provided between the sleeve and the annular flange in the axial direction of the inner bore.

[0011] Both the sleeve and the annular flange are set on the inner wall of the inner hole, with a gap reserved between them to allow space for the deformation of the annular flange, so as not to affect the elastic expansion deformation of the annular flange; moreover, since the sleeve is lower than the height of the inner hole, the annular flange is set on the empty inner hole wall, which is a reasonable structural design.

[0012] Furthermore, the cushion body is cylindrical and coaxial with the inner hole. An annular gasket is provided on the end face of the cushion body away from the annular flange. The central hole of the annular gasket is the same size as that of the sleeve and they are coaxially arranged. Preferably, the annular gasket has the same outer diameter as the cushion body. The annular gasket is fixed to the cushion body by vulcanization.

[0013] The ring-shaped gasket makes the force applied to the cushion body more even and stable.

[0014] Furthermore, the cross-section of the annular flange is in the shape of a right trapezoid, with the right-angled waist located on the top surface of the cushion body and the long base located on the inner wall surface of the inner hole.

[0015] By designing the cross-section of the annular flange into a right-angled trapezoidal shape, a structure with reduced radial dimensions is formed. This allows the annular flange to expand outwards while its end moves along the insertion direction of the mating part during insertion of the rubber pad and the mating component. This results in low insertion resistance, facilitating installation, while providing a larger clamping contact surface, enhancing the elastic clamping effect and providing a better seal for the inner bore. Furthermore, when the mating component is inserted into the inner bore from the end with the annular flange, the end of the annular flange moves inwards into the inner bore, with ample space at the bottom to accommodate the end, preventing excessive compression or even damage.

[0016] Furthermore, an annular groove is formed at the root of the annular flange, that is, an annular groove is formed at the outer edge of the top surface of the annular flange. Preferably, the depth of the annular groove is less than the length of the long bottom edge of the annular flange.

[0017] By setting an annular groove in the body of the pad, a groove width space can be reserved within the groove depth dimension of the annular groove, partially cutting off the radial connection between the annular flange and the pad body, making the elastic expansion of the annular groove easier, reducing the resistance of the mating parts to the inner hole, improving installation efficiency, and also reducing the deformation effect of the annular flange on the pad body, thus providing a better vibration reduction effect.

[0018] Furthermore, B ≤ d1 - d2, where B is twice the width of the annular groove, d1 is the maximum outer diameter of the mating area between the mating part and the inner hole, and d2 is the diameter of the central hole of the annular flange.

[0019] When the mating part is inserted into the inner hole, the expansion and deformation of the annular flange, by controlling the width of the annular groove, allows most or even completely of the space inside the groove to be occupied by the deformation of the annular flange. In the installed state, this creates a nearly groove-free soft pad body for vibration isolation, a clever structural design. This reduces the insertion resistance of the annular flange on the mating part, while the annular flange compresses the groove space and contacts the soft pad body, providing sufficient clamping force.

[0020] To solve the above-mentioned technical problems, the present invention provides an installation structure with the aforementioned rubber pad, including an installation component, a stud, an installation plate, and a nut. The bottom mounting surface of the installation component is provided with a vertically upward threaded blind hole. The installation plate is provided with an installation through hole. One end of the stud passes through the installation through hole and is threadedly fastened into the threaded blind hole. The rubber pad is sleeved on the outside of the stud between the installation plate and the installation component. The nut is tightened on the stud, thereby pressing the rubber pad between the installation plate and the installation component. The inner hole has an annular flange with one end close to the installation component.

[0021] The rubber pads achieve vibration isolation between the mounting components and the mounting plate. During installation, the rubber pads can be tightly fastened to the studs through the annular flange structure. Even if the blind hole of the threaded installation faces downwards, there is no need to worry about the rubber pads on the studs falling off, thus improving installation efficiency.

[0022] To address the aforementioned technical problems, the present invention provides an installation method based on the above-described installation structure, comprising the following steps:

[0023] Step 1: Secure the stud to the mounting piece using threads;

[0024] Step 2: Put a rubber pad on the outside of the stud, and use the elasticity of the annular flange to make the rubber pad with the annular flange end tightly attached to the bottom mounting surface of the mounting part.

[0025] Step 3: Secure the mounting plate to the other end of the rubber pad using the nut.

[0026] In the above installation method, the rubber pad is tightly clamped to the set position on the stud by the annular flange without the need for hand support. Then the mounting plate is installed. The operation is simple, saves installation time, and improves work efficiency.

[0027] In summary, by adopting the above-mentioned rubber pad, installation structure, and method, and by adding an anti-detachment structure to the rubber pad, the pad is prevented from falling off the mating parts. During the movement and assembly process, only the mating parts need to be controlled, which greatly improves the installation efficiency. Attached Figure Description

[0028] In the attached diagram:

[0029] Figure 1 This is a structural diagram of the rubber pad of the present invention.

[0030] Figure 2 This is a structural diagram of the rubber pad with an annular groove of the present invention.

[0031] Figure 3 This is a structural diagram of the installation structure of the present invention.

[0032] In the figure, 1 is the soft pad body; 2 is the inner hole; 3 is the annular flange; 31 is the annular groove; 4 is the sleeve; 5 is the annular gasket; 61 is the mounting part; 611 is the threaded mounting blind hole; 62 is the stud; 63 is the mounting plate; 631 is the mounting through hole; and 64 is the nut. Detailed Implementation

[0033] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted that these descriptions of the embodiments are for the purpose of helping to understand the present invention, but do not constitute a limitation thereof.

[0034] This invention discloses a rubber pad, comprising a pad body 1 with a through-hole 2. An annular flange 3 extends inward from one end of the pad body 1 within the inner hole 2. During installation, the annular flange 3 can elastically expand and deform, thereby tightly clamping onto a mating component passing through the inner hole 2. The inner diameter of the inner hole 2 is larger than the outer diameter of the mating component, and the inner diameter of the annular flange 3 is smaller than the outer diameter of the mating component.

[0035] An annular flange 3 is provided on the inner hole 2. When the mating part passes through the inner hole 2, the annular flange 3 is squeezed and expanded, and elastically clamps onto the mating part, thereby forming an anti-detachment structure to prevent the rubber pad from falling off the mating part. This allows only the mating part to be controlled during movement and assembly, greatly improving installation efficiency.

[0036] Optionally, a sleeve 4 is nested within the inner hole 2, the height of which is less than the depth of the inner hole 2. The sleeve 4 is fixed to the inner wall of the inner hole 2 by vulcanization. The sleeve 4 can limit the compressible limit size of the rubber pad as a whole, preventing damage to the rubber pad and also preventing excessive elastic fluctuation that could damage the parts.

[0037] Optionally, the sleeve 4 extends inward from the end of the inner bore 2 away from the annular flange 3. A gap is provided between the sleeve 4 and the annular flange 3 in the axial direction of the inner bore 2.

[0038] Both the sleeve 4 and the annular flange 3 are set on the inner wall of the inner hole 2, with a gap reserved between them to allow space for the deformation of the annular flange 3, so as not to affect the elastic expansion deformation of the annular flange 3; moreover, since the sleeve 4 is lower than the height of the inner hole 2, the annular flange 3 is set on the inner wall of the empty inner hole 2, which is a reasonable structural design.

[0039] Optionally, the cushion body 1 is a cylinder coaxial with the inner hole 2. An annular gasket 5 is provided on the end face of the cushion body 1 away from the annular flange 3. The central hole of the annular gasket 5 has the same size as that of the sleeve 4 and is arranged coaxially. The annular gasket 5 has the same outer diameter as the cushion body 1.

[0040] The annular gasket 5 can be fixed to the pad body 1 by vulcanization, so that the force acting on the pad body 1 is more uniform and stable.

[0041] Optionally, the cross-section of the annular flange 3 is in the shape of a right trapezoid, with the right-angle waist located on the top surface of the cushion body 1 and the long base located on the inner wall surface of the inner hole 2.

[0042] The cross-section of the annular flange 3 is designed as a right-angled trapezoid, forming a structure with reduced radial dimensions. This allows the annular flange 3 to expand outwards as it is inserted into the mating part, while its end moves along the insertion direction of the mating part. This results in low insertion resistance, facilitating installation, while providing a larger clamping contact surface with the mating part, leading to better elastic clamping and sealing of the inner hole 2. Furthermore, when the mating part is inserted into the inner hole 2 with the annular flange 3, the end of the annular flange 3 moves inwards into the inner hole 2, with ample space at the bottom to accommodate the end, preventing excessive compression or damage.

[0043] Optionally, an annular groove 31 is formed at the root of the annular flange 3, that is, an annular groove 31 is formed at the outer edge of the top surface of the annular flange 3. The depth of the annular groove 31 is less than the length of the long bottom edge of the annular flange 3, and can be set to half the length of the long bottom edge.

[0044] Since an excessively large size of the annular flange 3 would hinder the insertion of mating parts, while an excessively small size would result in insufficient clamping force and make manufacturing difficult, an annular groove 31 can be designed at the root of the annular flange 3. Since the annular groove 31 allows the annular flange 3 to deform freely outward, the size of the annular flange 3 can be appropriately increased during manufacturing, while the insertion resistance of the mating parts increases less, making manufacturing and installation easier.

[0045] Furthermore, the annular groove 31 provided within the pad body 1 allows for reserved space within the groove depth, partially severing the radial connection between the annular flange 3 and the pad body 1. This reduces the impact of deformation of the annular flange 3 on the pad body 1, thus providing better vibration damping. Moreover, when the mating component is inserted into the inner hole 2 from the end with the annular flange 3, the annular flange 3 can rapidly expand and enlarge the central hole by occupying the space of the annular groove 31, further reducing insertion resistance and improving installation efficiency.

[0046] Optionally, B ≤ d1 - d2, where B is twice the width of the annular groove 31, d1 is the maximum outer diameter of the mating area between the mating part and the inner hole 2, and d2 is the diameter of the central hole of the annular flange 3.

[0047] When the mating part is inserted into the inner hole 2, due to the expansion and deformation of the annular flange 3, the width of the annular groove 31 is controlled, allowing most or even all of the space inside the annular groove 31 to be squeezed and occupied, forming a nearly grooveless soft pad body 1 for vibration isolation. The structural design is ingenious. In addition, it can reduce the insertion resistance of the annular flange 3 to the mating part to a certain extent, while the annular flange 3 squeezes the groove space and contacts the soft pad body 1, providing sufficient clamping force.

[0048] The present invention provides an installation structure having the aforementioned rubber pad, comprising an installation component 61, a stud 62, an installation plate 63, and a nut 64. The bottom mounting surface of the installation component 61 is provided with a vertically upward threaded blind hole 611. The installation plate 63 is provided with an installation through hole 631. One end of the stud 62 passes through the installation through hole 631 and is threadedly fastened into the threaded blind hole 611. A rubber pad is sleeved on the outside of the stud 62 between the installation plate 63 and the installation component 61. The nut 64 is tightened on the stud 62, thereby pressing the rubber pad between the installation plate 63 and the installation component 61. The inner hole 2 has an annular flange 3 with one end close to the installation component 61.

[0049] The rubber pad enables vibration isolation between the mounting component 61 and the mounting plate 63. During installation, the rubber pad can be tightly fastened to the stud 62 through the annular flange 3 structure. Even if the threaded blind hole 611 is facing downwards, there is no need to worry about the rubber pad on the stud 62 falling off, thus improving installation efficiency.

[0050] This invention provides an installation method based on the above-described installation structure, comprising the following steps:

[0051] Step 1: Secure the stud 62 to the mounting part 61 using threads;

[0052] Step 2: Put a rubber pad on the outside of the stud 62, and use the elastic tightening effect of the annular flange 3 to make the rubber pad with one end of the annular flange 3 tightly attached to the bottom mounting surface of the mounting part 61.

[0053] Step 3: Secure the mounting plate 63 to the other end of the rubber pad using the nut 64. You can first thread the mounting through hole 631 of the mounting plate 63 onto the stud 62, and then screw the nut 64 onto the end of the stud 62 to clamp the rubber pad between the mounting plate 63 and the mounting part 61.

[0054] In the above installation method, the annular flange 3 tightly clamps the rubber pad to the set position on the stud 62 without the need for hand support, and then the mounting plate 63 is installed. The operation is simple, saves installation time, and improves work efficiency.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit its scope of protection. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that after reading the present invention, they can still make various changes, modifications or equivalent substitutions to the specific implementation of the invention, but these changes, modifications or equivalent substitutions are all within the scope of protection of the pending claims of the invention.

Claims

1. A rubber pad, characterized in that, Includes a soft pad body (1), the soft pad body (1) is provided with a through inner hole (2), the soft pad body (1) extends inward at one end of the inner hole (2) to form an annular flange (3), during installation, the annular flange (3) can elastically expand and deform, thereby tightly clamping onto the mating part passing through the inner hole (2); A sleeve (4) is nested in the inner hole (2), the height of the sleeve (4) is less than the depth of the inner hole (2), and the sleeve (4) extends inward from the end of the inner hole (2) away from the annular flange (3); A gap is provided between the sleeve (4) and the annular flange (3) in the axial direction of the inner hole (2); The cross section of the annular flange (3) is a right trapezoid, with the right-angled waist located on the top surface of the cushion body (1) and the long base located on the inner wall surface of the inner hole (2). The root of the annular flange (3) has an annular groove (31), and the depth of the annular groove (31) is less than the length of the long bottom edge of the annular flange (3). The annular groove (31) is provided in the cushion body (1), which can reserve groove width space within the groove depth dimension and partially cut off the radial connection between the annular flange (3) and the cushion body (1).

2. The rubber pad according to claim 1, characterized in that, The inner diameter of the inner hole (2) is greater than the outer diameter of the corresponding part of the mating part, and the inner diameter of the annular flange (3) is smaller than the outer diameter of the corresponding part of the mating part.

3. The rubber pad according to claim 2, characterized in that, The soft pad body (1) is a cylindrical shape coaxial with the inner hole (2). An annular gasket (5) is provided on the end face of the soft pad body (1) away from the annular flange (3). The central hole of the annular gasket (5) is the same size as that of the sleeve (4) and is arranged coaxially.

4. The rubber pad according to claim 1, characterized in that, B≤d1-d2, where B is twice the width of the annular groove (31), d1 is the maximum outer diameter of the mating area between the mating part and the inner hole (2), and d2 is the diameter of the central hole of the annular flange (3).

5. An installation structure having the rubber pad according to any one of claims 1-4, characterized in that, The device includes a mounting component (61), a stud (62), a mounting plate (63), and a nut (64). The mounting component (61) has a vertically upward threaded blind hole (611) on its bottom mounting surface. The mounting plate (63) has a mounting through hole (631). One end of the stud (62) passes through the mounting through hole (631) and is threadedly fastened into the threaded blind hole (611). A rubber pad is fitted on the outside of the stud (62) between the mounting plate (63) and the mounting component (61). The nut (64) is tightened on the stud (62), and the mounting plate (63) and the mounting component (61) press the rubber pad together. The inner hole (2) has an annular flange (3) with one end close to the mounting component (61).

6. An installation method based on the installation structure of claim 5, characterized in that, Includes the following steps: Step 1: Thread the stud (62) onto the mounting part (61); Step 2: Put a rubber pad on the outside of the stud (62) and use the elastic clamping effect of the annular flange (3) to make the rubber pad have one end of the annular flange (3) tightly attached to the bottom mounting surface of the mounting part (61); Step 3: Secure the mounting plate (63) to the other end of the rubber pad using the nut (64).

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