CN108952394B

CN108952394B - Adjustable damping hinge

Info

Publication number: CN108952394B
Application number: CN201810994276.4A
Authority: CN
Inventors: 戈建鸣; 黄振振; 史德金
Original assignee: KTK Group Co Ltd
Current assignee: KTK Group Co Ltd
Priority date: 2018-08-29
Filing date: 2018-08-29
Publication date: 2023-06-27
Anticipated expiration: 2038-08-29
Also published as: CN108952394A

Abstract

The invention relates to an adjustable damping hinge applied to rail transit, which comprises a hinge male part, a hinge female part, a hinge shaft for connecting the hinge male part and the hinge female part, and a shaft sleeve sleeved on the outer side of the hinge shaft, wherein the hinge shaft comprises a first shaft and a second shaft which are coaxially connected, the first shaft comprises a first shaft section and a second shaft section with a threaded hole, the outer diameter of the first shaft section is larger than that of the second shaft section, and the second shaft is in threaded fit with the threaded hole of the second shaft section. The shaft sleeve generates heat by utilizing the friction resistance of the high polymer material, so that the mechanical energy of the system is reduced and is converted into internal energy; when vibration or noise is transmitted to the high polymer material from the matrix, the mechanical energy is partially converted into heat energy to be dissipated due to the internal friction resistance between the molecular chain segments, so that a damping effect is achieved; the second shaft is matched with the threaded hole of the first shaft section, so that space is reserved for the first shaft section of the first shaft to be spread outwards in the radial direction.

Description

Adjustable damping hinge

Technical Field

The invention relates to a hinge, in particular to an adjustable damping hinge applied to rail transit.

Background

At present, hinges used in rail transit are basically non-damping hinges, impact is large when a door is opened and closed due to the fact that no buffer exists when the door is opened and closed, actions are not gentle and mild enough in the opening and closing process, and riding comfort is affected by large noise.

Disclosure of Invention

The invention aims to solve the technical problems that: the problem of track traffic equipment door switching noise is big, influences riding comfort is solved, an adjustable damping hinge is provided.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides an adjustable damping hinge, includes the public spare of hinge, hinge female spare, connects the articulated shaft of the public spare of hinge and hinge female spare to and the axle sleeve of cover in the articulated shaft outside, the articulated shaft includes coaxial coupling's first axle and second axle, and first axle includes axle section one and has the axle section two of screw hole, and axle section one external diameter is greater than axle section two external diameters, the screw hole screw thread fit of second axle and axle section two.

Preferably, the adjustable damping hinge further comprises a first limiting structure for limiting the axial movement of the hinge shaft and the shaft sleeve and a second limiting structure for limiting the rotation of the hinge shaft and the shaft sleeve.

Preferably, the hinge shaft is provided with a first protruding part protruding relative to a shaft sleeve hole of the shaft sleeve, one end of the shaft sleeve is provided with a first groove, the hinge male part is provided with a second groove, the first groove and the second groove are combined to form a third groove matched with the first protruding part, and the first protruding part limits rotation of the hinge shaft and the shaft sleeve and axial forward movement of the hinge shaft.

Preferably, the shaft sleeve is provided with a second protruding part protruding relative to the through hole of the hinge male part, and the second protruding part is used for limiting the axial reverse movement of the shaft sleeve.

Preferably, the hinge shaft is provided with a third protruding part protruding relative to the shaft sleeve hole of the shaft sleeve, the second protruding part and the third protruding part cooperate to limit the axial reverse movement of the hinge shaft, and the first protruding part and the third protruding part cooperate to limit the axial forward movement of the shaft sleeve; the first bulge, the second bulge and the third bulge form a first limiting structure for limiting the axial movement of the hinge shaft and the shaft sleeve, and the first bulge forms a second limiting structure for limiting the rotation of the hinge shaft and the shaft sleeve.

Preferably, the first protrusion and the third protrusion are respectively located at two ends of the hinge shaft, and the second protrusion is disposed on the shaft sleeve adjacent to an end of the third protrusion.

Preferably, the first shaft is provided with a convex strip forming a first convex part, the second shaft comprises a shaft section III in threaded connection with a shaft section II and a shaft section IV forming a third convex part, the inner wall of a shaft sleeve hole of the shaft sleeve is provided with an inner convex ring, the inner diameter of a through hole of the inner convex ring is larger than that of the shaft section III and smaller than or equal to that of the shaft section IV and the shaft section II, the end part of the shaft sleeve, which is adjacent to the third convex part, is provided with an outer convex ring forming a second convex part, the hinge male part is provided with an annular groove matched with the outer convex ring, and the depth of the annular groove is larger than or equal to the thickness of the outer convex ring.

Preferably, the first shaft section is provided with a first shaft hole and a second shaft hole which are communicated with the threaded hole, the second shaft hole is positioned between the first shaft hole and the threaded hole, and the inner diameter of the second shaft hole is larger than that of the first shaft hole.

Preferably, the hinge male member includes a first hinge body and a first connection portion having a through hole, and the hinge female member includes a second hinge body and a second connection portion having a through hole, the first hinge body and the second hinge body being connected by a hinge shaft passing through the through hole of the first connection portion and the through hole of the second connection portion.

Preferably, a gasket is sleeved outside the shaft sleeve and is positioned between the adjacent end surfaces of the first connecting part and the second connecting part.

Preferably, the sleeve is made of damping material.

Preferably, the sleeve is made of nylon, polyoxymethylene, polytetrafluoroethylene or ultra-high molecular weight polyethylene.

The beneficial effects of the invention are as follows:

1. the shaft sleeve and the gasket of the invention utilize the friction resistance of the high polymer material to generate heat, so that the mechanical energy of the system is reduced and converted into internal energy. When vibration or noise is transmitted to the high polymer material from the matrix, the mechanical energy is partially converted into heat energy to be dissipated due to the internal friction resistance between the molecular chain segments, so that the damping effect is achieved.

2. The polymer damping material selected by the invention has the characteristics of wear resistance, good dimensional stability, good mechanical property, self-lubricating property and the like. Specifically nylon (PA), polyoxymethylene (POM), polytetrafluoroethylene (PTFE), ultra High Molecular Weight Polyethylene (UHMWPE).

3. The hinge shaft comprises a first shaft and a second shaft, the first shaft is arranged into a stepped cylinder or a round platform structure, the first shaft comprises a first shaft section and a second shaft section, the outer diameter of the first shaft is reduced, the second shaft is matched with a threaded hole of the first shaft section, and therefore a space is reserved for the first shaft section to be expanded outwards in the radial direction.

4. Set up first shaft hole and second shaft hole on first axle, lead to both hardly taking apart because of the screw hole long-time combination of second axle and first axle, add lubricating oil to first shaft hole, second shaft hole, lubricating oil gets into the screw hole afterwards to make things convenient for the dismantlement of hinge, first shaft hole internal diameter is less than the second shaft hole internal diameter and can prevent that the intraductal lubricating oil of second shaft from flowing out from first shaft hole.

Drawings

FIG. 1 is an exploded view of an adjustable damping hinge of the present invention;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

FIG. 3 is a schematic cross-sectional view of an alternative view of the adjustable damping hinge of the present invention;

FIG. 4 is a perspective view of the adjustable damping hinge of the present invention;

fig. 5 is a perspective view of another view of the adjustable damping hinge of the present invention.

Reference numerals:

1 a hinge male part, 11 a first hinge body, 12 a first connecting part, 13 a second groove and 14 an annular groove;

2 hinge parent piece, 21 second hinge body, 22 second connecting part;

the first shaft, the first shaft section 31, the second shaft section A, the second shaft section 33, the first shaft hole 34, the second shaft hole 35, the threaded hole 36 and the raised line 37 are arranged on the first shaft;

the shaft sleeve 4, the shaft sleeve hole 41, the groove 42I, the inner convex ring 43 and the outer convex ring 44;

a gasket 5;

6 second axis, 61 axis segment three, 62 axis segment four.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 5, an adjustable damping hinge comprises a hinge male member 1, a hinge female member 2, a hinge shaft connecting the hinge male member 1 and the hinge female member 2, a shaft sleeve 4 sleeved outside the hinge shaft, a first limiting structure limiting axial movement of the hinge shaft and the shaft sleeve 4, and a second limiting structure limiting rotation of the hinge shaft and the shaft sleeve 4.

As shown in fig. 1, the hinge male member 1 includes a first hinge body 11 and a first connecting portion 12, the first connecting portion 12 is cylindrical with an axial through hole, and the first connecting portion 12 is located at one side of the first hinge body 11 and is integrally formed with the first hinge body 11. The hinge parent component 2 comprises a second hinge body 21 and a second connecting portion 22, wherein the second connecting portion 22 is cylindrical and provided with an axial through hole, and the second connecting portion 22 is positioned on one side of the second hinge body 21 and is integrally formed with the second hinge body 21. The first hinge body 11 and the second hinge body 21 are connected by a hinge shaft passing through the through-hole of the first connecting portion 12 and the through-hole of the second connecting portion 22. In this embodiment, the number of the first connecting portions 12 is two, the number of the second connecting portions 22 is one and is located between the two first connecting portions 12, and the first connecting portions 12 and the second connecting portions 22 coaxially cooperate to form a third connecting portion.

As shown in fig. 1, the hinge shaft includes a first shaft 3 and a second shaft 6 coaxially connected. The first shaft 3 is divided into a first shaft section 31 and a second shaft section 31 which are coaxially connected and have decreasing outer diameters from left to right, and the first shaft section 31 is tightly attached to a shaft sleeve hole 41 of the shaft sleeve 4. In this embodiment, the shaft section is divided into a second shaft section a32 and a second shaft section B33, and the outer diameter of the second shaft section a32 is larger than the outer diameter of the second shaft section B33. The second shaft 6 is divided from left to right into a shaft section three 61 with external threads and a shaft section four 62 forming a third projection, which are coaxially connected and have an increasing outer diameter.

As shown in fig. 2, the first shaft 3 is provided with a through hole penetrating axially, which is divided from left to right into a first shaft hole 34, a second shaft hole 35 and a screw hole 36, the first shaft hole 34 has an inner diameter smaller than that of the second shaft hole 35, and the third shaft hole has an inner diameter smaller than or equal to that of the second shaft hole 35. Lubricating oil is added into the first shaft hole 34 and the second shaft hole 35, and then the lubricating oil enters the threaded hole 36, so that the hinge is convenient to disassemble, and the lubricating oil in the second shaft hole 35 can be prevented from flowing out of the first shaft hole 34 due to the fact that the inner diameter of the first shaft hole 34 is smaller than that of the second shaft hole 35. The third shaft section 61 is threadedly engaged with the threaded bore 36 of the first shaft 3. Preferably, the threaded hole 36 is located at the second shaft segment but does not extend to the first shaft segment 31, because the third shaft segment 61, when mated with the threaded hole 36, will expand the second shaft segment radially outward, which is designed to provide space for the second shaft segment to be expanded.

As shown in fig. 3, the left end (end away from the second shaft 6) of the first shaft 3 is provided with a ridge 37 constituting a first projection, and the ridge 37 is located on the outer side surface of the first shaft 3 and extends in the axial direction. The left end of the shaft sleeve 4 is provided with a first groove 42 matched with the convex strip 37, the left end of the first connecting part 12 is provided with a second groove 13 matched with the convex strip 37, and the first groove 42 and the second groove 13 are combined to form a third groove matched with the convex strip 37. The first shaft 3 enters from the left end of the shaft sleeve hole 41 of the shaft sleeve 4 until the convex strip 37 is completely matched with the groove III, and at the moment, the left end face of the first shaft 3, the left end face of the shaft sleeve 4 and the left end face of the first connecting part 12 are flush. In this embodiment, the first groove 42 is a through groove (groove with two ends penetrating) penetrating the shaft sleeve 4 in the radial direction, and the second groove 13 is a through groove (groove with two ends penetrating) penetrating the first connecting portion 12 in the axial direction. Since the through holes of the first connecting portion 12 and the second connecting portion 22 have the same inner diameter, the portion of the left end surface of the second connecting portion 22 corresponding to the second groove 13 restricts the protrusion 37 from moving axially rightward. When the gasket 5 is sleeved outside the shaft sleeve 4, the part of the left end surface of the left gasket 5 corresponding to the second groove 13 limits the convex strip 37 to move axially to the right.

As shown in fig. 2, the sleeve 4 is cylindrical with a sleeve hole 41 passing through axially, the sleeve 4 is located between the inner wall of the through hole of the third connecting portion and the outer side surface of the hinge shaft, and the outer side surface of the sleeve 4 is matched with the inner wall of the through hole of the third connecting portion. The outer side surface of the right end of the shaft sleeve 4 is provided with a circle of convex ring 44 forming a second convex part, the outer diameter of the convex ring 44 is larger than the inner diameter of the right end of the through hole of the third connecting part, and the convex ring 44 is used for preventing the shaft sleeve 4 from being separated from the left end of the through hole of the third connecting part. The sleeve 4 enters from the right end of the through hole of the third connecting part until the outer convex ring 44 is abutted against the right end face of the third connecting part, and in order to prevent the outer convex ring 44 from protruding out of the through hole of the third connecting part, an annular groove 14 is arranged on the right end face of the third connecting part (the end face abutted against the outer convex ring 44), and the annular groove 14 is matched with the outer convex ring 44 to ensure that the right end faces of the outer sleeve and the third connecting part are flush.

As shown in fig. 2 and 3, an annular inner convex ring 43 is arranged on the inner wall of the shaft sleeve hole 41 of the shaft sleeve 4, and convex parts corresponding to the inner convex ring 43 are respectively arranged on two axial sides of the inner convex ring 43 of the hinge shaft, and are used for ensuring the axial mutual limit between the hinge shaft and the shaft sleeve 4. Specifically, the inner diameter of the inner convex ring 43 is smaller than or equal to the outer diameter of the second shaft section B33, the inner diameter of the inner convex ring 43 is larger than the third shaft section 61, and smaller than or equal to the fourth shaft section 62, i.e., the second shaft section B33 and the fourth shaft section 62 respectively form convex parts on two axial sides of the inner convex ring 43.

The hinge male part 1 and the hinge female part 2 are respectively fixed on a wall and a door of the railway vehicle by screws. The outer convex ring 44 of the shaft sleeve 4 limits the axial left movement of the shaft sleeve 4, and the outer convex ring 44 and the shaft section IV 62 protruding relative to the inner convex ring 43 cooperate to limit the axial left movement of the hinge shaft; the convex strip 37 limits the axial rightward movement of the hinge shaft, and the convex strip 37 and the inner convex ring 43 protruding relative to the fourth shaft section 62 cooperate to limit the axial rightward movement of the shaft sleeve 4; the protrusion 37 restricts both the rotation of the hinge shaft and the rotation of the sleeve 4. The outer convex ring 44, the inner convex ring 43, the fourth shaft section 62 and the convex strips 37 are combined to form a first limiting structure, and the convex strips 37 form a second limiting structure.

As shown in fig. 3, 4 and 5, the gasket 5 is sleeved outside the sleeve 4 and is located between the end surfaces of the adjacent first connecting portion 12 and the end surfaces of the second connecting portion 22. The outside diameter of the washer 5 is substantially the same as the outside diameters of the first and

second connection portions

12 and 22.

In this embodiment, the shaft sleeve 4 and the gasket 5 are made of damping materials, which are materials for converting solid mechanical vibration energy into heat energy and dissipating the heat energy, and are mainly used for vibration control and noise control. The shaft sleeve 4 and the gasket 5 of the invention utilize the friction resistance of the high polymer material to generate heat, so that the mechanical energy of the system is reduced and converted into internal energy. When vibration or noise is transmitted to the high polymer material from the matrix, the mechanical energy is partially converted into heat energy to be dissipated due to the internal friction resistance between the molecular chain segments, so that the damping effect is achieved.

The polymer damping material selected by the invention has the characteristics of wear resistance, good dimensional stability, good mechanical property, self-lubricating property and the like. Specifically nylon (PA), polyoxymethylene (POM), polytetrafluoroethylene (PTFE), ultra High Molecular Weight Polyethylene (UHMWPE).

The above embodiments do not limit the scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the above embodiments should be included in the scope of the present invention.

Claims

1. An adjustable damping hinge which is characterized in that: the hinge comprises a hinge male part (1), a hinge female part (2), a hinge shaft for connecting the hinge male part (1) and the hinge female part (2) and a shaft sleeve (4) sleeved outside the hinge shaft, wherein the hinge shaft comprises a first shaft (3) and a second shaft (6) which are coaxially connected, the first shaft (3) comprises a first shaft section (31) and a second shaft section with a threaded hole (36), the outer diameter of the first shaft section (31) is larger than that of the second shaft section, and the second shaft (6) is in threaded fit with the threaded hole (36) of the second shaft section; the first shaft section (31) is provided with a first shaft hole (34) and a second shaft hole (35) which are communicated with the threaded hole (36), the second shaft hole (35) is positioned between the first shaft hole (34) and the threaded hole (36), and the inner diameter of the second shaft hole (35) is larger than that of the first shaft hole (34);

the first shaft (3) is provided with a convex strip (37) forming a first convex part, the second shaft (6) comprises a shaft section III (61) in threaded connection with a shaft section II and a shaft section IV (62) forming a third convex part, the inner wall of a shaft sleeve hole (41) of the shaft sleeve (4) is provided with an inner convex ring (43), the inner diameter of a through hole of the inner convex ring (43) is larger than the outer diameter of the shaft section III (61) and smaller than or equal to the outer diameter of the shaft section IV (62) and the shaft section II, the end part of the shaft sleeve (4) adjacent to the third convex part is provided with an outer convex ring (44) forming a second convex part, the hinge male part (1) is provided with an annular groove (14) matched with the outer convex ring (44), and the depth of the annular groove (14) is larger than or equal to the thickness of the outer convex ring (44).

2. The adjustable damping hinge of claim 1, wherein: the hinge is characterized in that a first protruding portion protruding relative to a shaft sleeve hole (41) of the shaft sleeve (4) is arranged on the hinge shaft, a first groove (42) is formed in one end of the shaft sleeve (4), a second groove (13) is formed in the hinge male member (1), the first groove (42) and the second groove (13) are combined to form a third groove matched with the first protruding portion, and the first protruding portion limits rotation of the hinge shaft and the shaft sleeve (4) and axial forward movement of the hinge shaft.

3. The adjustable damping hinge of claim 2, wherein: the shaft sleeve (4) is provided with a second protruding part protruding relative to the through hole of the hinge male part (1), and the second protruding part is used for limiting the axial reverse movement of the shaft sleeve (4); the hinge shaft is provided with a third protruding part protruding relative to a shaft sleeve hole (41) of the shaft sleeve (4), the second protruding part and the third protruding part cooperate to limit the axial reverse movement of the hinge shaft, and the first protruding part and the third protruding part cooperate to limit the axial forward movement of the shaft sleeve (4).

4. The adjustable damping hinge of claim 3, wherein: the first protruding part and the third protruding part are respectively positioned at two ends of the hinge shaft, and the second protruding part is arranged at the end part of the shaft sleeve (4) adjacent to the third protruding part.

5. The adjustable damping hinge of claim 1, wherein: the hinge male part (1) comprises a first hinge body (11) and a first connecting part (12) with a through hole, the hinge female part (2) comprises a second hinge body (21) and a second connecting part (22) with a through hole, and the first hinge body (11) and the second hinge body (21) are connected through a hinge shaft penetrating through the through hole of the first connecting part (12) and the through hole of the second connecting part (22).

6. The adjustable damping hinge of claim 5, wherein: the outer side of the shaft sleeve (4) is sleeved with a gasket (5), and the gasket (5) is positioned between the adjacent end surfaces of the first connecting part (12) and the second connecting part (22).

7. The adjustable damping hinge of claim 1, wherein: the shaft sleeve (4) is made of damping materials.

8. The adjustable damping hinge of claim 7, wherein: the shaft sleeve (4) is made of nylon, polyformaldehyde, polytetrafluoroethylene or ultra-high molecular weight polyethylene.