Damping device

Abstract

The invention relates to a damping device which comprises a first damping body which comprises an upper damping part, a lower damping part and supporting damping feet for connecting and supporting the upper damping part and the lower damping part. And the second vibration reduction body is limited between the upper vibration reduction piece and the lower vibration reduction piece to form a multi-stage vibration reduction structure. Based on the multi-stage vibration reduction principle, the multi-stage vibration reduction device can be well suitable for products such as a projector with a high-power output sound all-in-one machine and the like, solves the vibration reduction problems of single-end vibration conduction, two-end vibration conduction, rotation vibration conduction, high-frequency vibration and the like on the products, and is beneficial to the structure of the vibration reduction device. The swing is small, and the noise is low.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration reduction, and in particular to a vibration reduction device. Background Art

[0002] Currently, the most commonly used vibration dampers on the market are spring-type, which have the following disadvantages: First, they can only reduce vibration amplitude, not frequency; spring damping can generate noise, making it unsuitable for audio products; spring damping has large swings, requiring ample swing space, and is expensive to manufacture. For products with rotating lifting mechanisms, vibration damping devices cannot be well integrated with the lifting mechanism, failing to address the vibration issues associated with the lifting process. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a vibration reduction device in response to the above-mentioned deficiencies in the prior art, which can effectively reduce the vibration amplitude, vibration frequency, noise, and swing range, and has a low manufacturing cost. It can be applied to products that require vibration reduction, such as audio products, projectors, or audio-projector all-in-one machines, and has a wide range of applications.

[0004] An embodiment of the present invention provides a vibration damping device, which includes: a first vibration damping body, including an upper vibration damping member, a lower vibration damping member, and a supporting vibration damping foot that connects the upper vibration damping member and the lower vibration damping member to support each other; and a second vibration damping body, which is limited between the upper vibration damping member and the lower vibration damping member.

[0005] In some embodiments, the upper vibration damping member, the lower vibration damping member, and the supporting vibration damping foot are integrally formed into a first vibration damping body.

[0006] In some embodiments, the first vibration damper and / or the second vibration damper are made of soft material.

[0007] In some embodiments, the initial contact between the second vibration damper and the first vibration damper is point-to-surface contact.

[0008] In some embodiments, the second vibration damping body is a sphere.

[0009] In some embodiments, the top surface of the upper vibration damping member is locked with the first connecting member, and the bottom surface of the lower vibration damping member is locked with the second connecting member.

[0010] In some embodiments, the first connecting member and the second connecting member are assembled by a locking member so as to be movable relative to each other.

[0011] In some embodiments, the first connecting member or the second connecting member is assembled on a lifting assembly.

[0012] In some embodiments, a limiting member for limiting the horizontal position of the second vibration damping body is provided between the upper vibration damping member and the lower vibration damping member.

[0013] In some embodiments, the first connecting member or the second connecting member has a limiting member.

[0014] Compared to related technologies, the vibration reduction device provided in the embodiments of the present invention includes a first vibration reduction body comprising an upper vibration reduction member, a lower vibration reduction member, and a support vibration reduction foot that connects and supports the upper and lower vibration reduction members; and a second vibration reduction body positioned between the upper and lower vibration reduction members, forming a multi-stage vibration reduction structure. Based on this multi-stage vibration reduction principle, it is well suited for products such as projectors with built-in high-power output audio systems. It solves the vibration reduction issues faced by such products, whether single-ended vibration transmission, double-ended vibration transmission, rotational vibration transmission, or high-frequency vibration. Furthermore, thanks to the structure of the vibration reduction device, it has minimal swing and noise.

[0015] The details of one or more embodiments of the invention are set forth in the accompanying drawings and the description below so that other features, objects, and advantages of the invention are more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 2 is a structural diagram of a vibration reduction device according to an embodiment of the present invention.

[0018] Figure 2 1 is an exploded structural diagram of a rotating connecting rod multi-stage vibration reduction device according to an embodiment of the present invention.

[0019] Figure 3 It is an assembly cross-sectional structural diagram of the rotating connecting rod multi-stage vibration reduction device according to an embodiment of the present invention.

[0020] Figure 4 1 is an exploded structural diagram of a connecting rod multi-stage vibration damping device according to an embodiment of the present invention.

[0021] Figure 5 It is an assembly cross-sectional structural diagram of the connecting rod multi-stage vibration damping device according to an embodiment of the present invention.

[0022] In the figure, 1. first vibration damping body; 2. second vibration damping body; 3. upper vibration damping member; 4. lower vibration damping member; 5. supporting vibration damping foot; 6. first connecting member; 7. second connecting member; 8. first positioning rod; 9. second positioning rod; 10. lifting bracket; 11. screw; 12. flange nut; 13. lower fixing plate; 14. motor; 15. upper fixing plate; 16. limit member; 17. annular groove; 18. annular ridge; 19. upper bracket; 20. lower bracket; 21. connecting rod. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described and illustrated in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of the present invention. In addition, it can also be understood that although the efforts made in this development process may be complex and lengthy, for those of ordinary skill in the art related to the contents disclosed by the present invention, some changes such as design, manufacturing or production based on the technical contents disclosed by the present invention are only conventional technical means and should not be understood as the contents disclosed by the present invention being insufficient.

[0024] References to "embodiments" in this disclosure mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the disclosure. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this disclosure may be combined with other embodiments, unless there is a conflict.

[0025] Unless otherwise defined, technical or scientific terms used in the present invention shall have the ordinary meaning as understood by a person of ordinary skill in the art to which the invention pertains. The terms "a," "an," "a kind," "the," and similar expressions used in the present invention do not limit the number and may refer to the singular or plural. The terms "comprise," "include," "have," and any variations thereof used in the present invention are intended to cover non-exclusive inclusions; for example, a process, method, system, product, or device comprising a series of steps or modules (units) is not limited to the listed steps or units but may also include steps or units not listed, or may include other steps or units inherent to the process, method, product, or device. The terms "connect," "connected," "coupled," and similar expressions used in the present invention are not limited to physical or mechanical connections but may include electrical connections, whether direct or indirect. The term "plurality" used in the present invention means greater than or equal to two. "And / or" describes an association relationship between associated objects, indicating that three relationships may exist. For example, "A and / or B" may mean: A exists alone, A and B exist simultaneously, or B exists alone. The terms "first", "second", "third", etc. involved in the present invention are merely used to distinguish similar objects and do not represent a specific ordering of the objects.

[0026] like Figure 1As shown, the vibration damping device of an embodiment of the present invention includes a first vibration damper 1 made of a soft material and a second vibration damper 2 in the shape of a sphere. The first vibration damper 1 of this embodiment includes an upper vibration damper 3, a lower vibration damper 4, and support vibration damping legs 5 that connect and support the upper vibration damper 3 and the lower vibration damper 4. The upper vibration damper 3 and the lower vibration damper 4 are both made of a soft colloid having a certain thickness. The two support vibration damping legs 5 made of a soft material are respectively connected to the upper vibration damper 3 and the lower vibration damper 4 on both sides, forming a gap with a certain distance between the upper vibration damper 3 and the lower vibration damper 4. The second vibration damper 2 of this embodiment is located between the upper vibration damper 3 and the lower vibration damper 4 to provide support between the upper vibration damper 3 and the lower vibration damper 4. Since the first vibration damper 1 is made of a soft colloid material, the second vibration damper 2 provides soft contact support for the upper vibration damper 3 and the lower vibration damper 4. In different embodiments, the second vibration damper 2 can be made of either a hard or soft material. A hard material provides better support, while a soft material provides better soft contact. In this embodiment, the upper vibration damper 3, the lower vibration damper 4, and the support vibration damper foot 5 are integrally injection-molded to form the first vibration damper 1. This creates a tighter soft connection between the upper vibration damper 3, the lower vibration damper 4, and the support vibration damper foot 5, and provides a more stable gap for accommodating the second vibration damper 2.

[0027] Because the second vibration damper 2 is spherical, and the lower surface of the upper vibration damper 3 in the first vibration damper 1 and the upper surface of the lower vibration damper are flat, the initial contact between the second vibration damper 2 and the first vibration damper 1 is point-to-surface contact. Since the first vibration damper 1 is made of soft rubber, the soft rubber material will elastically deform as the force applied to it continues to increase after contact with an object, causing the contact surface to change and eventually develop into surface-to-surface contact. Therefore, the initial point-to-surface contact can improve the buffering and vibration reduction effect under force vibration. This process of contact surface change is also the process of buffering and vibration reduction.

[0028] like Figure 2-3As shown, for the connection and assembly structure of the vibration damping device of Example 1 of the present invention (a multi-stage vibration damping device with a rotating connecting rod), in order to ensure the overall assembly reliability of the first vibration damping body 1 and the second vibration damping body 2 and to facilitate the specific application of the vibration damping device, a first connecting member 6 is locked on the top surface of the upper vibration damping member 3, and a second connecting member 7 is locked on the bottom surface of the lower vibration damping member 4. In this embodiment, the first connecting member 6 is a plastic upper shell, and the second connecting member 7 is a plastic lower shell. The plastic upper shell and the plastic lower shell together surround the first vibration damping body 1. The plastic upper shell and the plastic lower shell are fixed by clamping the first vibration damping body 1 in a non-contact manner. The plastic upper shell includes a top shell and a rear side shell, and the plastic lower shell includes a bottom shell and a front side shell. The front side shell and the rear side shell together cover the gap. To limit the range of motion between the first and second connectors 6 and 7, the first and second connectors 6 and 7 are assembled via locking elements to allow relative movement. The first connector 6 is provided with two diagonally arranged first positioning rods 8, which pass through the positioning holes of the upper vibration damper 3 and are secured with screws. The second connector 7 is provided with two diagonally arranged second positioning rods 9, which pass through the positioning holes of the lower vibration damper 4 and are secured with screws. The first positioning rods 8 are located inside the second positioning rods 9 and are diagonally opposite to each other, allowing the first and second connectors 6 and 7 to be more securely assembled with the first vibration damper 1, thereby ensuring the vibration reduction effect.

[0029] To enable the vibration damping device of the present invention to be applied to products requiring a lifting function, either the first connector 6 or the second connector 7 is assembled to a lifting assembly. In this embodiment, the second connector 7 is assembled to the lifting assembly, which includes a lifting bracket 10, a screw 11, a flange nut 12, and a lower fixing plate 13. The screw 11 is fixed to the lifting bracket 10, which is screwed to the second connector 7. The flange nut 12 is screwed to the lower fixing plate 13. By rotating the screw 11, the relative position of the screw 11 and the flange nut 12 is adjusted, thereby achieving the rotary lifting function. The output shaft of the motor 14 is screwed to the top surface of the first connector 6, and the motor 14 is screwed to the upper fixing plate 15. When the output shaft of the motor 14 rotates, it drives the first connecting member 6 to rotate synchronously. The sides of the first connecting member 6 and the second connecting member 7 are parallel. When the first connecting member 6 rotates, the side squeezes the soft rubber, and the soft rubber twists and squeezes the side of the second connecting member 7 to transmit force. The second connecting member 7 follows the rotation to achieve the purpose of rotation. Therefore, the vibration reduction device of this embodiment can not only reduce vibration in a single direction, but also reduce vibration generated during rotation, and its applicability is enhanced. The rotation of the output shaft of the motor 14 drives the lifting bracket 10 to rotate synchronously; the flange nut 12 is fixed to the lower fixed plate 13 and will not move, so that the motor 14 assembly moves up and down, and the forward and reverse rotation of the motor 14 forms a lifting action. The output shaft of the motor 14 is connected to the lifting bracket 10 through the vibration reduction device to achieve the vibration reduction effect of the connecting rod, forming a rotating connecting rod multi-stage vibration reduction device.

[0030] To ensure the position of the second vibration damper 2 and provide a consistent cushioning and vibration reduction effect, a stopper 16 is provided between the upper vibration damper 3 and the lower vibration damper 4 in this embodiment to limit the horizontal position of the second vibration damper 2. The first connecting member 6 in this embodiment includes a stopper 16, which comprises four stopper posts integrally formed therewith. These stopper posts surround the spherical second vibration damper 2. Since the second vibration damper 2 is spherical, the contact surfaces between the second vibration damper 2 and the four stopper posts are all point-to-surface contact. This ensures that the vibration reduction effect is reduced due to displacement of the second vibration damper 2 during long-term and repeated vibration reduction processes, and also ensures that the vibration reduction direction remains constant and does not shift.

[0031] To better define the position of the first connector 6 and the upper vibration damper 3, an annular groove 17 is provided on the upper vibration damper 3, and a corresponding annular ridge 18 is provided on the first connector 6. This combination of concave and convex features defines the relative position of the first connector 6 and the upper vibration damper 3, ensuring a vibration-damping effect. Similarly, the second connector 7 and the lower vibration damper 4 also adopt the same structure as described above, and the details will not be repeated here.

[0032] like Figure 4-5The figure shows a multi-stage vibration damping device with a connecting rod according to Example 2 of the present invention. This differs from Example 1 in that the top surface of the first connecting member 6 is locked with an upper bracket 19, and the bottom surface of the second connecting member 7 is locked with a lower bracket 20, which is connected to a connecting rod 21. This Example 2 reduces the lifting function compared to Example 1.

[0033] The working principle of the embodiment of the present invention is as follows:

[0034] The multi-stage vibration reduction principle: When one end of the first connecting member 6 vibrates, the vibration is transmitted to the upper vibration damper 3 of the first vibration damper 1. Due to the cushioning properties of the soft rubber, the first stage of vibration reduction occurs. The upper vibration damper 3 then transmits the vibration to the second vibration damper 2. Due to the single-point contact of the second vibration damper 2, only a portion of the vibration of the upper vibration damper 3 is transmitted to the second vibration damper 2, resulting in the second stage of vibration reduction. The vibration is then transmitted to the lower vibration damper 4 through the upper vibration damper 3 and the supporting vibration damper foot 5. The vibration is then transmitted to the lower vibration damper 4 through the second vibration damper 2, resulting in the fourth stage of vibration reduction. The four stages of vibration reduction are then subtracted. After the four stages of vibration reduction, the amplitude and frequency of the vibration are reduced accordingly, achieving a vibration reduction effect. Based on this multi-stage vibration reduction principle, it is well suited for use in integrated high-power audio systems, such as projectors. It solves the vibration reduction issues of such integrated systems, including single-ended vibration transmission, double-ended vibration transmission, rotational vibration transmission, and high-frequency vibration. Furthermore, due to the structure of the vibration reduction device, the vibration is minimal, resulting in low vibration and noise.

[0035] Those skilled in the art should understand that the various technical features of the above-described embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the various 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.

[0036] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A vibration damping device, characterized in that: include: A first vibration damping body (1) comprises an upper vibration damping member (3), a lower vibration damping member (4), and a supporting vibration damping foot (5) for connecting and supporting the upper vibration damping member (3) and the lower vibration damping member (4); and a second vibration damping body (2) which is located between the upper vibration damping member (3) and the lower vibration damping member (4).

2. A vibration damping device according to claim 1, characterized in that: The upper vibration damping member (3), the lower vibration damping member (4) and the supporting vibration damping foot (5) are integrally formed into the first vibration damping body (1).

3. A vibration damping device according to claim 2, characterized in that: The first vibration damper (1) and / or the second vibration damper (2) are made of soft material.

4. A vibration damping device according to claim 3, characterized in that: The initial contact between the second vibration damping body (2) and the first vibration damping body (1) is point-surface contact.

5. A vibration damping device according to claim 1 or 4, characterized in that: The second vibration damping body (2) is a sphere.

6. A vibration damping device according to claim 1, characterized in that: The top surface of the upper vibration damping member (3) is locked with a first connecting member (6), and the bottom surface of the lower vibration damping member (4) is locked with a second connecting member (7).

7. A vibration damping device according to claim 6, characterized in that: The first connecting member (6) and the second connecting member (7) are assembled via a locking member so as to be movable relative to each other.

8. The vibration damping device according to claim 6, characterized in that: The first connecting member (6) or the second connecting member (7) is assembled on a lifting component.

9. The vibration damping device according to claim 6, characterized in that: A limiting member (16) for limiting the horizontal position of the second vibration damping body (2) is provided between the upper vibration damping member (3) and the lower vibration damping member (4).

10. The vibration damping device according to claim 7, characterized in that: The first connecting member (6) or the second connecting member (7) has the limiting member (16).

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