CN116006563A - Microminiature three-way vibration reduction screw structure - Google Patents
Microminiature three-way vibration reduction screw structure Download PDFInfo
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- CN116006563A CN116006563A CN202211526518.XA CN202211526518A CN116006563A CN 116006563 A CN116006563 A CN 116006563A CN 202211526518 A CN202211526518 A CN 202211526518A CN 116006563 A CN116006563 A CN 116006563A
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Abstract
The invention relates to a microminiature three-way vibration reduction screw structure, which belongs to the technical field of vibration response of aerospace product structures; the device comprises a vibration reduction screw, an inner locking screw, an outer locking screw, a belleville spring, a first flat washer, an upper vibration reduction pad, a bracket, a lower vibration reduction pad, a fixed base, a second flat washer, a first conical spring, 2 first pressing blocks, a third flat washer, a second conical spring, a second pressing block and a supporting table; vibration damping performance in the X direction, the Y direction and the Z direction can be independently and continuously adjusted by independently and continuously screwing the vibration damping screw, the external locking screw and the internal locking screw respectively. The invention operates in one direction, can realize independent and continuous adjustment of vibration damping performance in three directions, has compact structure, small volume and simple and convenient operation, is suitable for miniaturization and modularization design of the whole machine, and has strong practicability.
Description
Technical Field
The invention belongs to the technical field of vibration response of aerospace product structures, and relates to a microminiature three-way vibration reduction screw structure.
Background
With the continuous development of technical fields such as aerospace, automobile industry and the like, some complete machines need to work under severe vibration environments. High-precision accessories, sensors and the like mounted on the whole machine have high requirements on vibration environment, and severe vibration seriously affects the reliability and service life of the high-precision accessories, the sensors and the like. Therefore, it is necessary to design a vibration damping structure for a support device such as a high-precision accessory or a sensor.
The traditional vibration damping structure is designed into a whole with the whole equipment, namely, the mounting lugs of the whole equipment are part of the vibration damping device. For the complete machine equipment which needs to be frequently disassembled or replaced, the vibration reduction part needs to be disassembled every time when the complete machine equipment is disassembled or replaced, so that the disassembly and replacement are time-consuming and labor-consuming, and the operation is troublesome.
Disclosure of Invention
The invention solves the technical problems that: the defect of the prior art is overcome, a microminiature three-way vibration damping screw structure is provided, the structure is compact, the size is small, the problem that the existing vibration damping structure is inconvenient to install and disassemble can be solved, one-direction operation can be realized, and the vibration damping performance can be independently and continuously adjusted in three directions.
The solution of the invention is as follows:
a microminiature three-way vibration damping screw structure comprises a vibration damping screw, an inner locking screw, an outer locking screw, a butterfly spring, a first flat washer, an upper vibration damping pad, a bracket, a lower vibration damping pad, a fixed base, a second flat washer, a first conical spring, 2 first pressing blocks, a third flat washer, a second conical spring, a second pressing block and a supporting table;
wherein the fixed base is horizontally arranged; the supporting table is fixedly arranged in the central through hole of the fixed base; the first conical spring is arranged at the top of the supporting table; and 1 first pressing block is respectively arranged at two sides of the bottom of the first conical spring along the Z direction; the second flat washer is horizontally arranged on the top of the first conical spring; the outer locking screw is axially and vertically arranged at the top of the second flat washer;
the second conical spring is arranged above the first conical spring; the two sides of the bottom of the second conical spring along the Y direction are respectively provided with 1 second pressing blocks; the third flat washer is horizontally arranged on the top of the second conical spring; the inner locking screw is axially and vertically arranged at the top of the third flat washer;
the inner locking screw is sleeved on the outer wall of the outer locking screw;
the lower vibration reduction pad is sleeved on the outer side wall of the supporting table and is positioned on the upper surface of the fixed base; the damping screw is sleeved on the outer wall of the inner locking screw, and the damping screw is axially and vertically arranged on the upper surface of the supporting table; the bracket is sleeved on the outer wall of the vibration reduction screw and is placed on the lower vibration reduction pad; the upper vibration reduction pad is sleeved on the outer wall of the vibration reduction screw and is placed on the bracket; the first flat cushion ring is sleeved on the outer wall of the damping screw and is placed on the upper damping cushion; the butterfly spring is sleeved on the outer wall of the vibration reduction screw and is positioned between the head of the vibration reduction screw and the first flat washer;
the side wall of the vibration reduction screw is provided with a corresponding through hole, so that the first pressing block passes through the through hole to be contacted with the inner walls at the two sides of the bracket in the Z direction; meanwhile, the second pressing block is contacted with the inner walls at the two sides of the Y direction of the bracket;
setting the X axis to be vertical upwards; the Y axis and the Z axis are both horizontal and perpendicular to each other.
In the microminiature three-way vibration reduction screw structure, one end of the vibration reduction screw is provided with a straight slot, and the other end of the vibration reduction screw is provided with external threads; the vibration reduction screw is internally provided with a cavity, one end of the cavity is provided with an internal thread, the other end of the cavity is provided with a cylindrical hole and a small cylindrical hole, and one end of the small cylindrical hole is provided with a circular hole; the side wall of the cylindrical hole is symmetrically provided with 2 through holes, and the side wall of the circular hole is symmetrically provided with 2 through holes.
In the microminiature three-way vibration reduction screw structure, one end of the inner locking screw is provided with a straight slot, 8 round holes uniformly distributed on the circumference and external threads, a cylindrical cavity is arranged in the inner locking screw, and the other end is provided with an end face;
the middle of the outer locking screw is provided with a cylindrical surface; one end of the cylindrical surface is provided with a lower cylindrical surface; one end of the lower cylindrical surface is provided with a lower end surface; the other end of the cylindrical surface is provided with an upper thread, and one end of the upper thread is provided with a straight slot.
In the microminiature three-way vibration reduction screw structure, the first pressing block is provided with an outer cylindrical surface, a rectangular bulge, a circular bulge and an inner cylindrical surface; the second pressing block is provided with an outer cylindrical surface, a rectangular bulge, a circular bulge and an inner cylindrical surface.
In the above-mentioned microminiature three-way vibration-damping screw structure, the materials of the lower vibration-damping pad and the upper vibration-damping pad are high damping materials, preferably rubber or metal rubber; the first pressing block and the second pressing block are both made of metal materials with small friction coefficients.
In the microminiature three-way vibration reduction screw structure, the external thread is in threaded connection with the fixed base through the linear groove rotary vibration reduction screw; continuing to rotate the damping screw, and pressing the upper damping pad and the lower damping pad by the damping screw through the belleville spring and the first flat washer; the compression amount of the upper vibration damping pad and the lower vibration damping pad is adjusted through the forward rotation vibration damping screw and the reverse rotation vibration damping screw, so that the contact rigidity and the damping in the X direction are adjusted, and the vibration damping performance in the X direction is adjusted.
In the microminiature three-way vibration reduction screw structure, rectangular protrusions of the 2 second pressing blocks respectively enter 2 through holes symmetrically formed in the side wall of the cylindrical hole in the vibration reduction screw; the outer cylindrical surface is matched with the cylindrical hole, the inner cylindrical surface is closely matched with the second conical spring, and the circular protrusion is in contact fit with the bracket; the inner locking screw is matched with the inner thread of the vibration reduction screw through the outer thread, after the inner locking screw is rotated through the straight slot, the end face of the inner locking screw presses the third flat washer, the third flat washer presses the second conical spring, the second conical spring presses the second pressing block after being deformed, and the second pressing block presses the bracket through the circular bulge; the extrusion amount between the circular bulge and the bracket is adjusted through the forward-rotation and reverse-rotation internal locking screw, so that the contact stiffness in the Y direction is changed, and the vibration damping performance in the Y direction is further changed.
In the microminiature three-way vibration reduction screw structure, rectangular protrusions of the 2 first pressing blocks respectively enter 2 through holes symmetrically formed in the side wall of a circular hole in the vibration reduction screw, the outer cylindrical surface is matched with the circular hole, the inner cylindrical surface is tightly matched with the first conical spring, and the circular protrusions are in contact fit with the bracket; the cylindrical surface enters the cylindrical cavity, and the lower cylindrical surface passes through the third flat washer and the second conical spring; the outer locking screw is matched with the inner thread of the vibration reduction screw through threads, the outer locking screw extrudes a second flat washer after rotating through a straight slot, the second flat washer extrudes a first conical spring arranged in the small cylindrical hole, the first conical spring extrudes a first pressing block after being deformed, and the first pressing block extrudes the bracket through a circular bulge; the extrusion amount between the circular bulge of the first pressing block and the bracket is adjusted through the forward rotation and reverse rotation external locking screw, so that the contact rigidity of the Z direction is changed, and the vibration damping performance of the Z direction is further changed.
In the above-mentioned microminiature three-way damping screw structure, the first briquetting, second briquetting are the point contact with the support, and the coefficient of friction of first briquetting and second briquetting is very little, screws outer locking screw and interior locking screw and does not influence the reciprocating motion of support along X direction, does not influence the contact rigidity and the damping characteristic of X direction promptly, does not influence the damping performance of X direction when realizing adjusting Y direction and Z direction damping performance.
In the microminiature three-way vibration reduction screw structure, after the outer locking screw is rotated, 5 round holes uniformly distributed on 8 circumferences in the inner locking screw are always left without shielding, and a special tool is used for rotating the inner locking screw under the condition that the outer locking screw is not rotated through the round holes; the vibration damping performance in the X direction, the Y direction and the Z direction is independently and continuously adjusted by respectively and continuously screwing the vibration damping screw, the external locking screw and the internal locking screw.
Compared with the prior art, the invention has the beneficial effects that:
(1) According to the microminiature three-way vibration damping screw structure, vibration damping performance in the X direction, the Y direction and the Z direction can be independently and continuously adjusted through the independent and continuous forward rotation or reverse rotation vibration damping screw, the external locking screw and the internal locking screw respectively;
(2) The three-way vibration damping screw structure has independence with important equipment such as a complete machine, the complete machine is connected through the vibration damping screw, and the three-way vibration damping screw structure can be used independently according to actual conditions or can be used in combination by different combination amounts. The problem of equipment such as complete machine often dismantle, the installation of change is solved. The operation is simple, the applicability is strong, the replacement is convenient and quick, and the economy is realized;
(3) The three-way vibration damping screw structure has compact structure and small volume, can realize independent and continuous adjustment of vibration damping performance in three directions when operated in one direction, can solve the vibration damping problem of the whole machine in a limited space, and is suitable for miniaturization and modularization of the whole machine.
Drawings
FIG. 1 is a front view of the three-way vibration reduction screw structure of the present invention;
FIG. 2 is a side view of the three-way vibration reduction screw structure of the present invention;
FIG. 3 is a cross-sectional view of a vibration reduction screw of the present invention;
FIG. 4 is a cross-sectional view of an internal locking screw of the present invention
FIG. 5 is a block diagram of an external locking screw of the present invention;
FIG. 6 is a block diagram of a first embodiment of the present invention;
fig. 7 is a block diagram of a second embodiment of the present invention.
Detailed Description
The invention is further illustrated below with reference to examples.
The invention provides a microminiature three-way vibration reduction screw structure which has a compact structure and a small volume, can solve the problem that the existing vibration reduction structure is inconvenient to install and disassemble, can realize one-direction operation, and can independently and continuously adjust vibration reduction performance in three directions.
The microminiature three-way vibration damping screw structure specifically comprises a vibration damping screw 1, an inner locking screw 2, an outer locking screw 3, a butterfly spring 4, a first flat washer 5, an upper vibration damping pad 6, a bracket 7, a lower vibration damping pad 8, a fixed base 9, a second flat washer 10, a first conical spring 11, 2 first pressing blocks 12, a third flat washer 13, a second conical spring 14, a second pressing block 15 and a supporting table 16 as shown in fig. 1 and 2.
Wherein the fixed base 9 is horizontally arranged; the supporting table 16 is fixedly arranged in the central through hole of the fixed base 9; the first conical spring 11 is arranged on top of the support table 16; and 1 first pressing block 12 is respectively arranged at two sides of the bottom of the first conical spring 11 along the Z direction; the second flat washer 10 is placed horizontally on top of the first conical spring 11; the outer locking screw 3 is placed axially vertically on top of the second flat washer 10.
The second conical spring 14 is arranged above the first conical spring 11; two sides of the bottom of the second conical spring 14 along the Y direction are respectively provided with 1 second pressing blocks 15; a third flat washer 13 is placed horizontally on top of the second conical spring 14; the inner locking screw 2 is placed axially vertically on top of the third flat washer 13.
The inner locking screw 2 is sleeved on the outer wall of the outer locking screw 3.
The lower vibration reduction pad 8 is sleeved on the outer side wall of the supporting table 16 and is positioned on the upper surface of the fixed base 9; the damping screw 1 is sleeved on the outer wall of the inner locking screw 2, and the damping screw 1 is axially and vertically arranged on the upper surface of the supporting table 16; the bracket 7 is sleeved on the outer wall of the vibration reduction screw 1 and is placed on the lower vibration reduction pad 8; the upper vibration reduction pad 6 is sleeved on the outer wall of the vibration reduction screw 1 and is placed on the bracket 7; the first flat washer 5 is sleeved on the outer wall of the vibration reduction screw 1 and is placed on the upper vibration reduction pad 6; the belleville spring 4 is sleeved on the outer wall of the damping screw 1 and is positioned between the head of the damping screw 1 and the first flat washer 5.
The side wall of the vibration reduction screw 1 is provided with corresponding through holes, so that the first pressing block 12 passes through the through holes to be contacted with the inner walls at the two sides of the bracket 7 in the Z direction; and meanwhile, the second pressing blocks 15 are contacted with the inner walls of the two sides of the support 7 in the Y direction.
Setting the X axis to be vertical upwards; the Y axis and the Z axis are both horizontal and perpendicular to each other.
As shown in fig. 3, one end of a vibration reduction screw 1 is provided with a straight slot 1-1, and the other end is provided with an external thread 1-5; the vibration reduction screw 1 is internally provided with a cavity, one end of the cavity is provided with an internal thread 1-2, the other end of the cavity is provided with a cylindrical hole 1-3 and a small cylindrical hole 1-4, and one end of the small cylindrical hole 1-4 is provided with a circular ring hole 1-6; the side wall of the cylindrical hole 1-3 is symmetrically provided with 2 through holes 1-7, and the side wall of the circular hole 1-6 is symmetrically provided with 2 through holes 1-8.
As shown in FIG. 4, one end of an inner locking screw 2 is provided with a straight slot 2-1, 8 round holes 2-2 uniformly distributed on the circumference and an external thread 2-3, a cylindrical cavity 2-4 is arranged in the inner locking screw, and the other end is provided with an end face 2-5;
as shown in fig. 5, a cylindrical surface 3-1 is arranged in the middle of the outer locking screw 3; one end of the cylindrical surface 3-1 is provided with a lower cylindrical surface 3-2; one end of the lower cylindrical surface 3-2 is provided with a lower end surface 3-3; the other end of the cylindrical surface 3-1 is provided with an upper thread 3-4, and one end of the upper thread 3-4 is provided with a straight slot 3-5.
As shown in fig. 6, the first press block 12 is provided with an outer cylindrical surface 12-1, a rectangular protrusion 12-2, a circular protrusion 12-3, and an inner cylindrical surface 12-4; the second pressing block 15 is provided with an outer cylindrical surface 15-1, a rectangular protrusion 15-2, a circular protrusion 15-3 and an inner cylindrical surface 15-4, as shown in fig. 7.
The lower vibration damping pad 9 and the upper vibration damping pad 10 are made of high damping materials, preferably rubber or metal rubber; the first press block 12 and the second press block 15 are both made of a metal material having a small friction coefficient.
The vibration reduction screw 1 is rotated through the straight groove 1-1 to enable the external thread 1-5 to be in threaded connection with the fixed base 9; continuing to rotate the damping screw 1, the damping screw 1 presses the upper damping pad 6 and the lower damping pad 8 through the belleville spring 4 and the first flat washer 5; the compression amount of the upper vibration damping pad 6 and the lower vibration damping pad 8 is adjusted through the forward rotation vibration damping screw 1 and the reverse rotation vibration damping screw 1, so that the contact rigidity and the damping in the X direction are adjusted, and the vibration damping performance in the X direction is adjusted.
Rectangular protrusions 15-2 of the 2 second pressing blocks 15 respectively enter 2 through holes 1-7 symmetrically formed in the side wall of the cylindrical hole 1-3 in the vibration reduction screw 1; the outer cylindrical surface 15-1 is matched with the cylindrical hole 1-3, the inner cylindrical surface 15-4 is closely matched with the second conical spring 14, and the circular protrusion 15-3 is in contact fit with the bracket 7; the inner locking screw 2 is matched with the inner thread 1-2 of the vibration damping screw 1 through the outer thread 2-3, after the inner locking screw 2 is rotated through the straight groove 2-1, the end face 2-5 of the inner locking screw 2 presses the third flat washer 13, the third flat washer 13 presses the second conical spring 14, the second conical spring 14 presses the second pressing block 15 after being deformed, and the second pressing block 15 presses the bracket 7 through the circular protrusion 15-3; the extrusion amount between the circular protrusion 15-3 and the bracket 7 is adjusted through the forward rotation and reverse rotation inner locking screw 2, so that the contact rigidity in the Y direction is changed, and the vibration damping performance in the Y direction is further changed.
The rectangular protrusions 12-2 of the 2 first pressing blocks 12 respectively enter 2 through holes 1-8 symmetrically formed in the side wall of the circular hole 1-6 in the vibration reduction screw 1, the outer cylindrical surface 12-1 is matched with the circular hole 1-6, the inner cylindrical surface 12-4 is tightly matched with the first conical spring 11, and the circular protrusions 12-3 are in contact fit with the bracket 7; the cylindrical surface 3-1 enters the cylindrical cavity 2-4, and the lower cylindrical surface 3-2 passes through the third flat washer 13 and the second conical spring 14; the outer locking screw 3 is matched with the internal thread 1-2 of the vibration reduction screw 1 through threads 3-4, after the outer locking screw 3 is rotated through a straight groove 3-5, the outer locking screw 3 extrudes a second flat washer 10, the second flat washer 10 extrudes a first conical spring 11 arranged in the small cylindrical hole 1-4, the first conical spring 11 extrudes a first pressing block 12 after being deformed, and the first pressing block 12 extrudes a bracket 7 through a circular bulge 12-3; the extrusion amount between the circular protrusion 12-3 of the first pressing block 12 and the bracket 7 is adjusted through the forward rotation and reverse rotation external locking screw 3, so that the contact rigidity in the Z direction is changed, and the vibration damping performance in the Z direction is further changed.
The first pressing block 12 and the second pressing block 15 are in point contact with the support 7, the friction coefficient of the first pressing block 12 and the second pressing block 15 is small, the screwing of the outer locking screw 3 and the inner locking screw 2 does not affect the reciprocating motion of the support 7 along the X direction, namely, the contact rigidity and the damping characteristic of the X direction are not affected, and the vibration damping performance of the X direction is not affected when the vibration damping performance of the Y direction and the Z direction is regulated.
After the outer locking screw 3 is rotated, 5 round holes 2-2 are formed in the round holes 2-2 uniformly distributed on the 8 circumferences of the inner locking screw 2 all the time, and the inner locking screw 2 is rotated under the condition that the outer locking screw 3 is not rotated by applying a special tool through the round holes 2-2; the vibration damping performance in the X direction, the Y direction and the Z direction is independently and continuously adjusted by respectively and continuously screwing the vibration damping screw 1, the outer locking screw 3 and the inner locking screw 2.
The performance parameters achieved by the invention are as follows:
the working temperature is between minus 50 ℃ and plus 75 ℃;
the vibration damping performance can be independently and continuously adjusted in three directions;
the vibration damping performance in three directions can be adjusted by using the tool in one direction, and the operation is convenient;
the two or more of the above-mentioned components can be used singly or in combination;
the installation, adjustment and disassembly are convenient;
the minimum volume is phi 8mmX10mm.
According to the microminiature three-way vibration damping screw structure, vibration damping performance in the X direction, the Y direction and the Z direction can be independently and continuously adjusted through the independent and continuous forward rotation or reverse rotation vibration damping screw, the external locking screw and the internal locking screw respectively. The microminiature three-way vibration reduction screw structure has independence with important equipment such as a complete machine, the complete machine is connected through the vibration reduction screw, and the microminiature three-way vibration reduction screw structure can be used independently according to actual conditions or can be combined in different combination amounts. The problem of equipment such as complete machine often dismantle, the installation of change is solved. The operation is simple, the applicability is strong, the replacement is convenient and fast, and the economical efficiency is realized.
The microminiature three-way vibration damping screw structure has compact structure and small volume, can realize independent and continuous adjustment of vibration damping performance in three directions by operating in one direction, can solve the vibration damping problem of the whole machine in a limited space, and is suitable for miniaturization and modularization of the whole machine.
Although the present invention has been described in terms of the preferred embodiments, it is not intended to be limited to the embodiments, and any person skilled in the art can make any possible variations and modifications to the technical solution of the present invention by using the methods and technical matters disclosed above without departing from the spirit and scope of the present invention, so any simple modifications, equivalent variations and modifications to the embodiments described above according to the technical matters of the present invention are within the scope of the technical matters of the present invention.
Claims (10)
1. A microminiature three-way damping screw structure, its characterized in that: the device comprises a vibration reduction screw (1), an inner locking screw (2), an outer locking screw (3), a butterfly spring (4), a first flat washer (5), an upper vibration reduction pad (6), a bracket (7), a lower vibration reduction pad (8), a fixed base (9), a second flat washer (10), a first conical spring (11), 2 first pressing blocks (12), a third flat washer (13), a second conical spring (14), a second pressing block (15) and a supporting table (16);
wherein the fixed base (9) is horizontally arranged; the supporting table (16) is fixedly arranged in the central through hole of the fixed base (9); the first conical spring (11) is arranged at the top of the supporting table (16); and 1 first pressing blocks (12) are respectively arranged at two sides of the bottom of the first conical spring (11) along the Z direction; the second flat washer (10) is horizontally arranged on the top of the first conical spring (11); the outer locking screw (3) is vertically arranged at the top of the second flat washer (10) in the axial direction;
the second conical spring (14) is arranged above the first conical spring (11); two sides of the bottom of the second conical spring (14) along the Y direction are respectively provided with 1 second pressing blocks (15); the third flat washer (13) is horizontally arranged on the top of the second conical spring (14); the inner locking screw (2) is vertically arranged at the top of the third flat washer (13) in the axial direction;
the inner locking screw (2) is sleeved on the outer wall of the outer locking screw (3);
the lower vibration reduction pad (8) is sleeved on the outer side wall of the supporting table (16) and is positioned on the upper surface of the fixed base (9); the damping screw (1) is sleeved on the outer wall of the inner locking screw (2), and the damping screw (1) is axially and vertically arranged on the upper surface of the supporting table (16); the bracket (7) is sleeved on the outer wall of the vibration reduction screw (1) and is placed on the lower vibration reduction pad (8); the upper vibration reduction pad (6) is sleeved on the outer wall of the vibration reduction screw (1) and is placed on the bracket (7); the first flat washer (5) is sleeved on the outer wall of the vibration reduction screw (1) and is placed on the upper vibration reduction pad (6); the belleville spring (4) is sleeved on the outer wall of the vibration reduction screw (1) and is positioned between the head of the vibration reduction screw (1) and the first flat washer (5);
the side wall of the vibration reduction screw (1) is provided with corresponding through holes, so that the first pressing block (12) passes through the through holes to be in contact with the inner walls of the two sides of the bracket (7) in the Z direction; meanwhile, the second pressing block (15) is contacted with the inner walls at the two sides of the Y direction of the bracket (7);
setting the X axis to be vertical upwards; the Y axis and the Z axis are both horizontal and perpendicular to each other.
2. The microminiature three-way vibration reduction screw structure according to claim 1, wherein: one end of the vibration reduction screw (1) is provided with a straight slot (1-1), and the other end is provided with an external thread (1-5); a cavity is formed in the vibration reduction screw (1), one end of the cavity is provided with an internal thread (1-2), the other end of the cavity is provided with a cylindrical hole (1-3) and a small cylindrical hole (1-4), and one end of the small cylindrical hole (1-4) is provided with a circular ring hole (1-6); the side wall of the cylindrical hole (1-3) is symmetrically provided with 2 through holes (1-7), and the side wall of the circular hole (1-6) is symmetrically provided with 2 through holes (1-8).
3. The microminiature three-way vibration reduction screw structure according to claim 2, wherein: one end of the inner locking screw (2) is provided with a straight groove (2-1), 8 round holes (2-2) uniformly distributed on the circumference and an external thread (2-3), a cylindrical cavity (2-4) is arranged in the inner locking screw, and the other end of the inner locking screw is provided with an end face (2-5);
a cylindrical surface (3-1) is arranged in the middle of the outer locking screw (3); one end of the cylindrical surface (3-1) is provided with a lower cylindrical surface (3-2); one end of the lower cylindrical surface (3-2) is provided with a lower end surface (3-3); the other end of the cylindrical surface (3-1) is provided with an upper thread (3-4), and one end of the upper thread (3-4) is provided with a straight groove (3-5).
4. A microminiature three-way vibration reduction screw structure according to claim 3, wherein: the first pressing block (12) is provided with an outer cylindrical surface (12-1), a rectangular bulge (12-2), a round bulge (12-3) and an inner cylindrical surface (12-4); the second pressing block (15) is provided with an outer cylindrical surface (15-1), a rectangular bulge (15-2), a round bulge (15-3) and an inner cylindrical surface (15-4).
5. The microminiature three-way vibration reduction screw structure according to claim 1, wherein: the lower vibration reduction pad (9) and the upper vibration reduction pad (10) are made of high damping materials, and are preferably rubber or metal rubber; the first pressing block (12) and the second pressing block (15) are both made of metal materials with small friction coefficients.
6. The microminiature three-way vibration reduction screw structure according to claim 4, wherein: the external thread (1-5) is in threaded connection with the fixed base (9) through the linear groove (1-1) and the rotary vibration reduction screw (1); continuing to rotate the damping screw (1), and extruding an upper damping pad (6) and a lower damping pad (8) by the damping screw (1) through the belleville spring (4) and the first flat washer (5); the compression quantity of the upper vibration damping pad (6) and the lower vibration damping pad (8) is adjusted through the forward rotation vibration damping screw (1) and the reverse rotation vibration damping screw (1), so that the contact rigidity and the damping in the X direction are adjusted, and the vibration damping performance in the X direction is adjusted.
7. The microminiature three-way vibration reduction screw structure according to claim 6, wherein: rectangular bulges (15-2) of the 2 second pressing blocks (15) respectively enter 2 through holes (1-7) symmetrically formed in the side wall of the cylindrical hole (1-3) in the vibration reduction screw (1); the outer cylindrical surface (15-1) is matched with the cylindrical hole (1-3), the inner cylindrical surface (15-4) is tightly matched with the second conical spring (14), and the circular protrusion (15-3) is in contact fit with the bracket (7); the inner locking screw (2) is matched with the inner thread (1-2) of the vibration reduction screw (1) through the outer thread (2-3), after the inner locking screw (2) is rotated through the straight groove (2-1), the end face (2-5) of the inner locking screw (2) is extruded to form a third flat gasket (13), the third flat gasket (13) is extruded to form a second conical spring (14), the second conical spring (14) is extruded to form a second pressing block (15) after being deformed, and the second pressing block (15) is extruded to form a bracket (7) through the circular bulge (15-3); the extrusion amount between the circular bulge (15-3) and the bracket (7) is adjusted through the forward rotation and reverse rotation inner locking screw (2), so that the contact rigidity in the Y direction is changed, and the vibration damping performance in the Y direction is further changed.
8. The microminiature three-way vibration reduction screw structure according to claim 7, wherein: rectangular protrusions (12-2) of the 2 first pressing blocks (12) respectively enter 2 through holes (1-8) symmetrically formed in the side wall of a circular hole (1-6) in the vibration reduction screw (1), the outer cylindrical surface (12-1) is matched with the circular hole (1-6), the inner cylindrical surface (12-4) is tightly matched with the first conical spring (11), and the circular protrusions (12-3) are in contact fit with the bracket (7); the cylindrical surface (3-1) enters the cylindrical cavity (2-4), and the lower cylindrical surface (3-2) passes through the third flat washer (13) and the second conical spring (14); the outer locking screw (3) is matched with the inner thread (1-2) of the vibration reduction screw (1) through threads (3-4), after the outer locking screw (3) is rotated through a straight groove (3-5), the outer locking screw (3) extrudes a second flat washer (10), the second flat washer (10) extrudes a first conical spring (11) arranged in the small cylindrical hole (1-4), the first conical spring (11) extrudes a first pressing block (12) after being deformed, and the first pressing block (12) extrudes a bracket (7) through a circular bulge (12-3); the extrusion amount between the circular bulge (12-3) of the first pressing block (12) and the bracket (7) is adjusted through the forward rotation and reverse rotation external locking screw (3), so that the contact stiffness in the Z direction is changed, and the vibration damping performance in the Z direction is further changed.
9. The microminiature three-way vibration reduction screw structure according to claim 8, wherein: the first pressing block (12), the second pressing block (15) are in point contact with the support (7), friction coefficients of the first pressing block (12) and the second pressing block (15) are small, the screwing of the outer locking screw (3) and the inner locking screw (2) does not influence the reciprocating motion of the support (7) along the X direction, namely, the contact rigidity and the damping characteristic of the X direction are not influenced, and the vibration damping performance of the X direction is not influenced when the vibration damping performance of the Y direction and the Z direction is regulated.
10. The microminiature three-way vibration reduction screw structure according to claim 9, wherein: after the outer locking screw (3) is rotated, 5 round holes (2-2) are uniformly distributed in 8 circumferences in the inner locking screw (2) all the time, the 5 round holes (2-2) are not shielded, and a special tool is used for rotating the inner locking screw (2) under the condition that the outer locking screw (3) is not rotated through the round holes (2-2); vibration damping performance in the X direction, the Y direction and the Z direction is independently and continuously adjusted through independent and continuous forward rotation or reverse rotation of the vibration damping screw (1), the outer locking screw (3) and the inner locking screw (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211526518.XA CN116006563A (en) | 2022-11-30 | 2022-11-30 | Microminiature three-way vibration reduction screw structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211526518.XA CN116006563A (en) | 2022-11-30 | 2022-11-30 | Microminiature three-way vibration reduction screw structure |
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| CN116006563A true CN116006563A (en) | 2023-04-25 |
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| CN202211526518.XA Pending CN116006563A (en) | 2022-11-30 | 2022-11-30 | Microminiature three-way vibration reduction screw structure |
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| JP2005147226A (en) * | 2003-11-13 | 2005-06-09 | Toyota Motor Corp | Fastening member with damping function, and vibration control device using its fastening member |
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| CN111335477A (en) * | 2020-03-08 | 2020-06-26 | 北京工业大学 | Compound type multidimensional shock insulation support with double-layer disc springs |
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2022
- 2022-11-30 CN CN202211526518.XA patent/CN116006563A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005147226A (en) * | 2003-11-13 | 2005-06-09 | Toyota Motor Corp | Fastening member with damping function, and vibration control device using its fastening member |
| CN102341613A (en) * | 2009-03-04 | 2012-02-01 | 伊利诺斯工具制品有限公司 | Bushing assembly |
| CN203335579U (en) * | 2013-07-03 | 2013-12-11 | 山推工程机械股份有限公司 | Buffering fixing device for radiator fan support |
| CN103831646A (en) * | 2014-03-13 | 2014-06-04 | 北京航空航天大学 | Milling passive vibration reduction clamp |
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