CN220706314U

CN220706314U - Vibration isolator

Info

Publication number: CN220706314U
Application number: CN202322402171.4U
Authority: CN
Inventors: 程昌利; 吴剑超; 邓森中
Original assignee: Wuxi Jiangda Vibration Isolator Co ltd
Current assignee: Wuxi Jiangda Vibration Isolator Co ltd
Priority date: 2023-09-05
Filing date: 2023-09-05
Publication date: 2024-04-02
Anticipated expiration: 2033-09-05

Abstract

The utility model provides a vibration isolator, which is characterized by comprising the following components: the fixing assembly comprises a fixing shaft extending along the axial direction, at least two elastic pieces, wherein the fixing shaft is sleeved with the elastic pieces along the axial direction, any two adjacent elastic pieces are arranged at intervals, the interval between any two adjacent elastic pieces is used for arranging a workpiece, and the fixing shaft can fix the position of the elastic pieces in the axial direction; the fixed sleeve extends along the circumferential direction, and the fixed sleeve is sleeved outside any elastic piece. The vibration isolator provided by the embodiment of the utility model has a simple structure, can be used for chassis equipment, and has the advantages of large axial and radial contact area, strong supporting capability and large radial contact area, and ensures long service life of metal rubber and good vibration isolation effect.

Description

Vibration isolator

Technical Field

The utility model belongs to the technical field of vibration isolators, and particularly relates to a vibration isolator.

Background

The vehicle-mounted equipment and the missile-borne equipment can generate larger vibration problem in the use process, vibration reduction treatment is usually needed, the vehicle-mounted equipment and the missile-borne equipment are small in inner space and severe in use environment within the temperature range of-55 ℃ to 130 ℃, and the existing vibration isolator cannot meet the use requirement, so that a new vibration isolator is urgently needed to be designed.

Disclosure of Invention

In order to solve at least one technical problem in the prior art, the embodiment of the utility model provides the vibration isolator which is good in vibration isolation effect. In order to achieve the technical purpose, the technical scheme adopted by the embodiment of the utility model is as follows:

the embodiment of the utility model provides a vibration isolator, which comprises the following components:

a fixed component comprising a fixed shaft extending along the axial direction,

the elastic pieces are sleeved on the fixed shaft along the axial direction, any two adjacent elastic pieces are arranged at intervals, the interval between any two adjacent elastic pieces is used for arranging a workpiece, and the fixed shaft can fix the position of the elastic pieces in the axial direction;

the fixed sleeve extends along the circumferential direction, and the fixed sleeve is sleeved outside any elastic piece.

Further, the elastic piece is made of metal rubber.

Further, the fixed shaft comprises a screw and a nut, the elastic piece is sleeved on the screw, and the nut can limit the position of the elastic piece on the screw.

Further, the fixed subassembly still includes the axle sleeve, the axle sleeve cover is established on the fixed axle, the axle sleeve includes:

the shaft sleeve body extends along the axial direction,

the first bottom plate is arranged at one end of the shaft sleeve body;

the second bottom plate is arranged at the other end of the shaft sleeve body,

the elastic piece is sleeved on the shaft sleeve and arranged between the first bottom plate and the second bottom plate.

Further, the first bottom plate is fixedly connected with the shaft sleeve body, and the second bottom plate is movably connected with the shaft sleeve body.

Further, any one of the fixing sleeves includes:

an axial portion, which is arranged outside the elastic piece, and the length of the axial portion is smaller than the length of the elastic piece along the axial direction;

and the radial part is fixedly connected with the axial part and is arranged on one side of any elastic piece, which is close to the other elastic piece, and the length of the radial part is smaller than the radial width of the elastic piece.

The technical scheme provided by the embodiment of the utility model has the beneficial effects that:

the vibration isolator provided by the embodiment of the utility model has a simple structure, can be used for an airborne or vehicle-mounted medium-sized electronic chassis, an inertial unit electronic device, a comprehensive navigation system and the like, and has the advantages of large axial and radial contact area, strong supporting capability and large radial contact area when in use, and ensures long service life of metal rubber and good vibration isolation effect.

Drawings

Fig. 1 is an exploded view of a shock absorber in accordance with an embodiment of the present utility model.

Fig. 2 is a cross-sectional view of a shock absorber in an embodiment of the present utility model.

FIG. 3 is an illustration of an installation of a shock absorber in accordance with an embodiment of the present utility model.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the description of the embodiments of the present utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, or can be communicated inside the two components, or can be connected wirelessly or in a wired way. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

the fixed assembly 1 comprises a fixed shaft 11 extending along the axial direction,

the elastic pieces 2 are sleeved on the fixed shaft 11 along the axial direction, any two adjacent elastic pieces 2 are arranged at intervals, the interval between any two adjacent elastic pieces 2 is used for arranging a workpiece, and the fixed shaft 11 can fix the position of the elastic piece 2 in the axial direction;

and the fixed sleeve 3 extends along the circumferential direction, and the fixed sleeve 3 is sleeved on the outer side of any elastic piece 2.

In a specific embodiment, as shown in fig. 1 and fig. 2, the fixed shaft 11 of the vibration isolator extends along the vertical direction, the elastic members 2 are sequentially sleeved on the fixed shaft 11 along the vertical direction, a workpiece is arranged between any two adjacent elastic members 2, when the workpiece moves upwards, the elastic member 2 above the workpiece contracts and has a restoring trend, and then the upward movement of the workpiece can be slowed down, when the workpiece moves downwards, the elastic member 2 below the workpiece contracts and has a restoring trend, and then the downward movement of the workpiece can be slowed down, in the structure, the axial contact area between the elastic member 2 and the workpiece is large, and the vibration isolation effect of the vibration isolator along the axial direction can be ensured. And because the outer side of any elastic piece 2 is sleeved with the fixed sleeve 3, when the workpiece moves along the radial direction, the elastic piece 2 contracts along the radial direction and has a tendency of restoring to the original state, and the radial movement of the workpiece can be slowed down. The vibration isolator can be used for an onboard or vehicle-mounted medium-sized electronic chassis, an inertial unit electronic device and the like, in a specific embodiment, as shown in fig. 3, when the vibration isolator is used, the connecting part of the chassis device is arranged in the interval between the elastic pieces, the axial contact area and the radial contact area are large, the supporting capacity is strong, the service life is long, and the vibration isolator has good impact resistance in the axial direction or the radial direction and good vibration isolation effect.

The size and the number of the elastic pieces 2 are not limited, the size and the number of the elastic pieces 2 can be adaptively adjusted according to actual needs, and it can be understood that the larger the volume of the elastic pieces 2 is, the better the buffering effect of the elastic pieces 2 is; the sizes of the elastic pieces 2 can be the same or different from each other, so that different vibration isolation effects can be generated on the workpieces among the elastic pieces 2. In a specific embodiment, as shown in fig. 2, the vibration isolator adopts two elastic members 2, and a workpiece can be arranged between the two elastic members 2, in another specific embodiment, the vibration isolator adopts three elastic members 2, a workpiece is arranged between any two elastic members 2, and the sizes of the three elastic members 2 are different from each other, so that different vibration isolation effects can be respectively generated for the two workpieces.

The kind of the elastic member 2 is not limited in the present application. In a specific embodiment, the elastic member 2 is made of polymer rubber.

In another specific embodiment, the elastic member 2 is made of metal rubber, the metal rubber is a homogeneous elastic porous material, metal wires are orderly arranged in a die, and then the die is formed by stamping, and the metal rubber has good wear resistance, strong conductivity and strong shock resistance.

The specific configuration of the fixing shaft 11 is not limited, and in a specific embodiment, the fixing shaft 11 includes a screw 111 and a nut 112, the elastic member 2 is sleeved on the screw 111, and the nut 112 can define the position of the elastic member 2 on the screw 111.

As shown in fig. 2, when in installation, one elastic member 2 is sleeved on the screw 111 and is tightly attached to the head of the screw 111, then a workpiece and the other elastic member 2 are sleeved in sequence, the nut 112 is screwed at the lower end of the screw 111 from bottom to top, then the screw 111 and the nut 112 can fix the elastic member 2 and the workpiece, the distance between the nut 112 and the head of the screw 111 can be adjusted, and the fixing shaft 11 can be suitable for the elastic members 2 with different sizes and numbers, can also adjust the intervals between the elastic members 2, and is suitable for workpieces with different specifications.

Further, the fixing assembly 1 further includes a sleeve 12, the sleeve 12 is sleeved on the fixing shaft 11, and the sleeve 12 includes:

the sleeve body 121, extending in the axial direction,

a first bottom plate 122 disposed at one end of the sleeve body 121;

a second bottom plate 123 provided at the other end of the sleeve body 121,

the elastic member 2 is sleeved on the shaft sleeve 12 and is disposed between the first bottom plate 122 and the second bottom plate 123. In a specific embodiment, as shown in fig. 2, the sleeve 12 can fix the position of the elastic member 2 on the screw 111, so as to ensure the stability of the vibration isolator in the use process, the first bottom plate 122 increases the contact area between the elastic member 2 and the head of the screw 111 on the upper side, and can avoid abrasion of the upper surface of the elastic member 2 on the upper side, so as to prolong the service life of the elastic member 2 on the upper side, and similarly, the second bottom plate 123 increases the contact area between the elastic member 2 and the nut 112 on the lower side, and can avoid abrasion of the lower surface of the elastic member 2 on the lower side, so as to prolong the service life of the elastic member 2 on the lower side.

The connection modes between the sleeve body 121, the first bottom plate 122, and the second bottom plate 123 are not limited, and in a specific embodiment, the first bottom plate 122 is movably connected with the sleeve body 121, and the second bottom plate 123 is movably connected with the sleeve body 121. In another specific embodiment, the first bottom plate 122 is fixedly connected with the shaft sleeve body 121, the second bottom plate 123 is movably connected with the shaft sleeve body 121, the structure increases the stability of connection between the first bottom plate 122 and the shaft sleeve body 121, which is favorable for clamping the elastic piece 2 and the workpiece and ensuring the stability of using the vibration isolator, the first bottom plate 122 and the shaft sleeve body 121 can be integrally formed or be separately arranged and are connected through welding, and the second bottom plate 123 and the shaft sleeve body 121 are movably connected to facilitate the installation of the vibration isolator.

Further, any one of the fixing sleeves 3 includes:

an axial portion 31 provided outside the elastic member 2, the axial portion 31 having a length smaller than a length of the elastic member 2 in an axial direction;

the radial portion 32 is fixedly connected with the axial portion 31 and is disposed on one side of any one of the elastic members 2 close to the other elastic member 2, and the length of the radial portion 32 is smaller than the radial width of the elastic member 2.

In a specific embodiment, as shown in fig. 2, taking the elastic member 2 on the right side of the upper side as an example, since the length of the axial portion 31 is smaller than the length of the elastic member 2 along the up-down direction, when the workpiece moves upwards, the elastic member 2 compresses, and the axial portion 31 will not collide with the first bottom plate 122; because the length of the radial portion 32 is smaller than the radial width of the elastic member 2, when the vibration isolator is compressed by the workpiece in the radial direction, the elastic member 2 is compressed in the radial direction, no collision occurs between the radial portion 32 and the sleeve body 121, and the fixing sleeve 3 can fix the position of the elastic member 2, and also can avoid abrasion of the contact surface between the elastic member 2 and the workpiece, so that the service life of the elastic member 2 is prolonged.

Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same, and although the present utility model has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present utility model.

Claims

1. A vibration isolator, comprising:

a fixed assembly (1) comprising a fixed shaft (11) extending in an axial direction,

the elastic pieces (2) are sleeved on the fixed shaft (11) along the axial direction, any two adjacent elastic pieces (2) are arranged at intervals, the interval between any two adjacent elastic pieces (2) is used for arranging a workpiece, and the fixed shaft (11) can fix the position of the elastic piece (2) in the axial direction;

and the fixing sleeve (3) extends along the circumferential direction, and the fixing sleeve (3) is sleeved on the outer side of any elastic piece (2).

2. The vibration isolator according to claim 1, wherein,

the elastic piece (2) is made of metal rubber.

3. The vibration isolator according to claim 1, wherein,

the fixed shaft (11) comprises a screw (111) and a nut (112), the elastic piece (2) is sleeved on the screw (111), and the nut (112) can limit the position of the elastic piece (2) on the screw (111).

4. The vibration isolator according to claim 1, wherein,

the fixed assembly (1) further comprises a shaft sleeve (12), the shaft sleeve (12) is sleeved on the fixed shaft (11), and the shaft sleeve (12) comprises:

a sleeve body (121) extending in the axial direction,

a first bottom plate (122) provided at one end of the sleeve body (121);

a second bottom plate (123) arranged at the other end of the shaft sleeve body (121),

the elastic piece (2) is sleeved on the shaft sleeve (12) and is arranged between the first bottom plate (122) and the second bottom plate (123).

5. The vibration isolator according to claim 4, wherein,

the first bottom plate (122) is fixedly connected with the shaft sleeve body (121), and the second bottom plate (123) is movably connected with the shaft sleeve body (121).

6. The vibration isolator according to claim 1, wherein any one of the stationary bushings (3) comprises:

an axial portion (31) provided outside the elastic member (2), the length of the axial portion (31) being smaller than the length of the elastic member (2) in the axial direction;

the radial part (32) is fixedly connected with the axial part (31) and is arranged on one side of any elastic piece (2) close to the other elastic piece (2), and the length of the radial part (32) is smaller than the radial width of the elastic piece (2).