Vibration reduction foot pad and compressor
By designing the inner hole structure of the vibration-absorbing foot pad with raised vibration-absorbing foot pad, the problem of poor vibration reduction in the prior art is solved, and more effective axial vibration reduction is achieved, which significantly improves the vibration-absorbing effect of the compressor.
Patent Information
- Application Number
- CN202422338163.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-24
AI Technical Summary
Existing vibration-absorbing foot pads are not effective in reducing the axial vibration of the compressor. They are only used to fix the fasteners and are unable to effectively resist axial deformation.
A vibration-absorbing foot pad is designed, and its inner hole structure includes a first end hole section, a middle hole section and a second end hole section connected in sequence along the axial direction. The inner surface of the middle hole section is provided with a protrusion. The fastener does not contact the protrusion during initial installation, but when the protrusion is deformed and squeezes inwardly, touching the surface of the fastener, thereby effectively resisting the axial deformation.
Vibration is absorbed through radial deformation and effectively resist axial deformation through the protrusions of the hole section in the middle of the inner hole, which significantly reduces the axial vibration of the compressor, and reduces the maximum acceleration by 15%-30%, improving the vibration damping effect.
Smart Images
Figure CN223049319U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of compressors, in particular to a vibration damping foot pad and a compressor using the vibration damping foot pad. Background Art
[0002] Due to its structural limitations, the rotary compressor of a household air conditioner cannot achieve torque balance within the full speed range, resulting in relatively large vibrations. Reducing the vibrations of the rotary compressor can effectively reduce the vibrations of the air conditioning system. In the prior art, vibration damping foot pads are mainly used to achieve the vibration damping of the compressor. Through the damping effect of the vibration damping foot pads, the axial vibrations of the compressor can be effectively reduced. Conventional vibration damping foot pads focus on the shape design, and the inner holes of the vibration damping foot pads are only for fasteners (such as bolts) for fixing the compressor to the installation surface to pass through, and are only used for the installation of the fasteners, without contributing to the vibration damping effect of the vibration damping foot pads. Summary of the Utility Model
[0003] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the utility model is to provide a vibration damping foot pad, and the inner hole structure of the vibration damping foot pad can more effectively resist axial deformation and reduce vibrations.
[0004] To solve the above technical problem, the utility model adopts the following technical solutions:
[0005] The utility model provides a vibration damping foot pad, which includes a foot pad body. An inner hole for a fastener to pass through is formed axially through the interior of the foot pad body. The inner hole includes a first end hole section, a middle hole section, and a second end hole section that are sequentially connected along the axis. The diameters of both the first end hole section and the second end hole section are smaller than the diameter of the middle hole section. A protrusion is provided on the inner surface of the middle hole section. When the fastener is not axially stressed, the surface of the fastener and the protrusion do not contact.
[0006] Preferably, the middle hole section has a straight hole section with an equal diameter. The two ends of the straight hole section are respectively connected to the first end hole section and the second end hole section through a first tapered hole section and a second tapered hole section. The protrusion is provided on the inner surface of the straight hole section.
[0007] Preferably, the length of the straight hole section in the axial direction of the inner hole is H, and the maximum width of the protrusion in the axial direction of the inner hole is h, and it satisfies: 0.4 ≤ h / H ≤ 0.5.
[0008] Preferably, the length of the straight hole section in the axial direction of the inner hole is H, the end surface of the first end hole section is used to connect to the installation surface, and the axial distance from the center of the protrusion in the axial direction of the inner hole to the end of the straight hole section close to the first end hole section is L, and it satisfies: 0.5 ≤ L / H ≤ 0.6.
[0009] Preferably, the length of the straight hole section in the axial direction of the inner hole is H, and the maximum height by which the protrusion protrudes from the inner surface of the straight hole section in the radial direction of the inner hole is d, and the following is satisfied: 0.05 ≤ d / H ≤ 0.3.
[0010] Preferably, 0.1 ≤ d / H ≤ 0.3.
[0011] Preferably, 0.05 ≤ d / H ≤ 0.1.
[0012] Preferably, the protrusions are arranged continuously or at intervals along the circumferential direction of the inner hole.
[0013] Preferably, the surface of the protrusion is a spherical surface or an arc surface.
[0014] The present utility model further provides a compressor, which adopts the vibration damping foot pad as described above.
[0015] Compared with the prior art, the present utility model has significant progress:
[0016] When the vibration damping foot pad of the present utility model is subjected to an axial force due to the vibration of the vibrating body it is assembled to, it can absorb the vibration through the radial deformation of the foot pad body. A protrusion is provided on the inner surface of the middle hole section of the inner hole of the foot pad body. During initial installation, the fastener can smoothly pass through the vibration damping foot pad for installation and fixation, and in the non-loaded state, especially in the non-axially loaded state, the fastener does not touch the protrusion on the inner surface of the middle hole section of the inner hole of the foot pad body, reducing the installation difficulty of the fastener. And in the working state of the vibrating body, the protrusion is axially loaded and deforms inward to squeeze and touch the surface of the fastener, forming a deformation resistance zone. While fastening the fastener, it more effectively resists the axial deformation of the foot pad body, thereby more effectively reducing vibration and achieving a better vibration damping effect. Description of the Drawings
[0017] Figure 1 is a cross-sectional schematic view of the vibration damping foot pad according to an embodiment of the present utility model.
[0018] Among them, the reference numerals are explained as follows:
[0019] 1 Foot pad body
[0020] 2 Inner hole
[0021] 21 First end hole section
[0022] 22 Middle hole section
[0023] 221 Straight hole section
[0024] 222 First tapered hole section
[0025] 223 Second tapered hole section
[0026] 23 Second end hole section
[0027] 3 protrusions Detailed implementation manners
[0028] The following further describes in detail the detailed implementation manners of the present utility model in conjunction with the accompanying drawings. These implementation manners are only used to illustrate the present utility model and are not intended to limit the present utility model.
[0029] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0030] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0031] In addition, in the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.
[0032] As Figure 1 shown, it is an embodiment of the vibration damping foot pad provided by the present utility model. This embodiment of the vibration damping foot pad is used when installing a vibrating body (such as a compressor) on an installation surface (such as the inner side surface of the equipment housing). The vibration damping foot pad is provided between the feet of the vibrating body and the installation surface, and the damping is provided by the vibration damping foot pad to achieve the vibration damping effect.
[0033] The shock-absorbing foot pad of this embodiment includes a foot pad body 1, and the foot pad body 1 is preferably made of an elastic material, and the elastic material for making the foot pad body 1 is preferably rubber. An inner hole 2 is formed through the foot pad body 1 along the axial direction, and the inner hole 2 is for a fastener to pass through. The fastener is used to mount and fix the vibrating body to the mounting surface, and the fastener is preferably a bolt. The inner hole 2 includes a first end hole section 21, a middle hole section 22, and a second end hole section 23 that are sequentially connected along the axial direction. The first end hole section 21, the middle hole section 22, and the second end hole section 23 are preferably coaxially arranged. The diameters of the first end hole section 21 and the second end hole section 23 are both smaller than the diameter of the middle hole section 22. A protrusion 3 is provided on the inner surface of the middle hole section 22. When the fastener passing through the inner hole 2 is not axially stressed, the surface of the fastener and the protrusion 3 do not contact.
[0034] When the shock-absorbing foot pad of this embodiment is axially stressed due to the vibration of the vibrating body it is assembled with, it can absorb the vibration through the radial deformation of the foot pad body 1. A protrusion 3 is provided on the inner surface of the middle hole section 22 of the inner hole 2 of the foot pad body 1. During initial installation, the fastener can smoothly pass through the shock-absorbing foot pad for installation and fixation. And in the non-stressed state, especially in the non-axially stressed state, the fastener does not touch the protrusion 3 on the inner surface of the middle hole section 22 of the inner hole 2 of the foot pad body, reducing the installation difficulty of the fastener. While in the working state of the vibrating body, the protrusion 3 is axially stressed and deforms inward to squeeze and touch the surface of the fastener, forming a deformation resistance area. While fastening the fastener, it more effectively resists the axial deformation of the foot pad body 1, thereby more effectively reducing vibration and achieving a better shock-absorbing effect.
[0035] In this embodiment, preferably, the middle hole section 22 of the inner hole 2 of the foot pad body 1 has a straight hole section 221 with an equal diameter. The two ends of the straight hole section 221 are respectively connected to the first end hole section 21 and the second end hole section 23 through a first tapered hole section 222 and a second tapered hole section 223. That is, one end of the straight hole section 221 is connected to the first end hole section 21 through the first tapered hole section 222, and the diameter of the first tapered hole section 222 gradually decreases from the first end close to the straight hole section 221 to the end close to the first end hole section 21; the other end of the straight hole section 221 is connected to the second end hole section 23 through the second tapered hole section 223, and the diameter of the second tapered hole section 223 gradually decreases from the first end close to the straight hole section 221 to the end close to the second end hole section 23. The length of the straight hole section 221 in the axial direction of the inner hole 2 is greater than the lengths of the first tapered hole section 222 and the second tapered hole section 223 in the axial direction of the inner hole 2. The protrusion 3 is provided on the inner surface of the straight hole section 221, which can achieve a better effect of resisting the axial deformation of the foot pad body 1.
[0036] In this embodiment, the length of the straight hole section 221 of the middle hole section 22 in the axial direction of the inner hole 2 is H. Preferably, the maximum width of the protrusion 3 in the axial direction of the inner hole 2 is h, and it satisfies: 0.4 ≤ h / H ≤ 0.5.
[0037] In this embodiment, the end face of the first end hole section 21 of the inner hole 2 of the foot pad body 1 is used to connect to the installation surface, and one end of the foot pad body 1 provided with the second end hole section 23 is used to connect to the bottom feet of the vibrating body. The fastener sequentially passes through the second end hole section 23, the middle hole section 22, and the first end hole section 21 and then connects to the installation surface, thereby installing and fixing the bottom feet of the vibrating body on the installation surface. Preferably, the axial distance from the center of the protrusion 3 in the axial direction of the inner hole 2 to one end of the straight hole section 221 close to the first end hole section 21 is L, and it satisfies: 0.5 ≤ L / H ≤ 0.6.
[0038] In this embodiment, preferably, the maximum height d of the protrusion 3 protruding from the inner surface of the straight hole section 221 in the radial direction of the inner hole 2 satisfies: 0.05 ≤ d / H ≤ 0.3. Preferably, 0.1 ≤ d / H ≤ 0.3. Preferably, 0.05 ≤ d / H ≤ 0.1.
[0039] In this embodiment, the protrusions 3 are arranged continuously along the circumferential direction of the inner hole 2, or the protrusions 3 are arranged at intervals along the circumferential direction of the inner hole 2.
[0040] In this embodiment, the surface of the protrusion 3 is a spherical surface, or the surface of the protrusion 3 is an arc surface.
[0041] Based on the vibration damping foot pad of the present utility model, the embodiment of the present utility model further provides a compressor. The compressor of this embodiment adopts the above-mentioned vibration damping foot pad of this embodiment. When the compressor is installed on a fixed installation surface (such as the inner side surface of the temperature control equipment housing), the above-mentioned vibration damping foot pad is arranged between the bottom feet of the compressor and the installation surface, and the bottom feet of the compressor are connected and fixed to the installation surface through a fastener (such as a bolt) passing through the inner hole 2 of the foot pad body 1, thereby installing and fixing the compressor on the installation surface. When the vibration damping foot pad is subjected to an axial force due to the vibration of the compressor, it can absorb the vibration through the radial deformation of the foot pad body 1, and the protrusion 3 provided on the inner surface of the middle hole section 22 of the inner hole 2 of the foot pad body 1 can more effectively resist the axial deformation of the foot pad body 1, thereby more effectively reducing the vibration and achieving a better vibration damping effect. Tests show that after the compressor is replaced with the vibration damping foot pad of the present utility model, the maximum value of the axial vibration acceleration can be reduced by 15% - 30%, and the vibration damping effect is better.
[0042] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present utility model.
Claims
1. A vibration-damping foot pad, characterized in that: The invention comprises a foot pad body (1), wherein the interior of the foot pad body (1) is axially penetrated to form an inner hole (2) for a fastener to pass through, wherein the inner hole (2) comprises a first end hole section (21), a middle hole section (22) and a second end hole section (23) which are sequentially connected along the axial direction, wherein the diameter of the first end hole section (21) and the diameter of the second end hole section (23) are both smaller than the diameter of the middle hole section (22), and a protrusion (3) is provided on the inner surface of the middle hole section (22), and when the fastener is not subjected to axial force, the surface of the fastener and the protrusion (3) are not in contact.
2. The vibration-damping foot pad according to claim 1, characterized in that: The middle hole section (22) has a straight hole section (221) of equal diameter, and the two ends of the straight hole section (221) are connected to the first end hole section (21) and the second end hole section (23) respectively through a first tapered hole section (222) and a second tapered hole section (223), and the protrusion (3) is arranged on the inner surface of the straight hole section (221).
3. The vibration-damping foot pad according to claim 2, characterized in that: The length of the straight hole section (221) in the axial direction of the inner hole (2) is H, the maximum width of the protrusion (3) in the axial direction of the inner hole (2) is h, and the following conditions are satisfied: 0.4≤h / H≤0.
5.
4. The vibration-damping foot pad according to claim 2, characterized in that: The axial length of the straight hole section (221) in the inner hole (2) is H, the end face of the first end hole section (21) is used to connect to the mounting surface, the axial distance from the center of the protrusion (3) in the axial direction of the inner hole (2) to an end of the straight hole section (221) close to the first end hole section (21) is L, and the following conditions are satisfied: 0.5≤L / H≤0.
6.
5. The vibration-damping foot pad according to claim 2, characterized in that: The length of the straight hole section (221) in the axial direction of the inner hole (2) is H, the maximum height of the protrusion (3) protruding from the inner surface of the straight hole section (221) in the radial direction of the inner hole (2) is d, and the following conditions are satisfied: 0.05≤d / H≤0.
3.
6. The vibration-damping foot pad according to claim 5, characterized in that: 0.1≤d / H≤0.
3.
7. The vibration-damping foot pad according to claim 5, characterized in that: 0.05≤d / H≤0.
1.
8. The vibration-damping foot pad according to claim 1, characterized in that: The protrusions (3) are arranged continuously or at intervals along the circumference of the inner hole (2).
9. The vibration-damping foot pad according to claim 1, characterized in that: The surface of the protrusion (3) is a spherical surface or an arc surface.
10. A compressor, characterized in that: A vibration-damping foot pad as claimed in any one of claims 1 to 9 is used.