阅读说明：本技术 一种封闭式防脱开减噪微型拖链 (Closed anti-drop miniature tow chain of making an uproar that subtracts ) 是由 孙驰 张军营 于 2021-09-16 设计创作，主要内容包括：本发明提供一种封闭式防脱开减噪微型拖链,相邻两个链节之间设有限位结构,限位结构包括设于其中一链节上的限位槽,以及设于相邻另一链节上、与限位槽适配连接的限位块,限位块具有与限位槽底壁相对设置的第一面,通过在第一面和限位槽的其中一方设置阻尼件,阻尼件适于在限位块转动时、与其对向设置的配合面滑动摩擦,且阻尼件具有弹性,这样限位块在转动至与限位槽的侧壁接触之前,会因受到摩擦力和弹性阻尼力作用而降低其与限位槽侧壁的接触速度及碰撞力度,与现有技术相比,这种降噪效果更好。(The invention provides a closed anti-drop and noise-reduction miniature drag chain, wherein a limiting structure is arranged between two adjacent chain links, the limiting structure comprises a limiting groove arranged on one chain link and a limiting block arranged on the other adjacent chain link and in adaptive connection with the limiting groove, the limiting block is provided with a first surface opposite to the bottom wall of the limiting groove, a damping part is arranged on one of the first surface and the limiting groove, the damping part is suitable for sliding friction with a matching surface arranged opposite to the limiting block when the limiting block rotates, and the damping part has elasticity, so that the contact speed and the collision force between the limiting block and the side wall of the limiting groove can be reduced due to the action of friction force and elastic damping force before the limiting block rotates to be in contact with the side wall of the limiting groove.)

1. A closed anti-disengagement noise-reduction miniature drag chain is formed by splicing a plurality of chain links (1), a limiting structure used for controlling the rotation angle of the two is arranged between two adjacent chain links (1), the limiting structure comprises a limiting groove (2) arranged on one of the chain links (1) and a limiting block (3) arranged on the other adjacent chain link (1) and capable of being in adaptive connection with the limiting groove (2), the limiting groove (2) is provided with a bottom wall (21) and side walls (22) respectively arranged at two sides of the bottom wall (21), the limiting block (3) is provided with a first surface (31) opposite to the bottom wall (21) and a second surface (32) opposite to the side walls (22), the miniature drag chain is characterized by further comprising a damping piece (4) arranged at one of the first surface (31) and the limiting groove (2), and the damping piece (4) is suitable for being rotated by the limiting block (3), And the matching surface arranged opposite to the sliding friction surface is in sliding friction.

2. The miniature closed anti-release noise-reducing towline of claim 1, wherein the damping member (4) is integrally formed on the bottom wall (21) or the first face (31) of the retaining groove (2).

3. The closed anti-drop noise-reducing micro towline according to claim 1 or 2, wherein the damping member (4) has an elastic arm (41), and both ends of the elastic arm (41) extend toward the corresponding side wall (22).

4. The enclosed anti-drop noise-reducing mini drag chain of claim 3, wherein the middle of the elastic arm (41) is provided with a connecting part (42) connected to the bottom wall (21) of the limiting groove (2) or the first surface (31), the elastic arm (41) has a first contact surface (43) and a second contact surface (44) respectively arranged at two sides of the connecting part (42), and when the limiting block (3) rotates, only the first contact surface (43) and the second contact surface (44) of the elastic arm (41) contact with the matching surface.

5. The closed anti-disengagement noise-reduction micro towline according to claim 1, wherein the damping member (4) is a rubber member provided on the bottom wall (21) or the first face (31) of the limiting groove (2).

6. The closed anti-disengagement noise-reduction miniature drag chain according to claim 1, characterized in that the chain links (1) comprise two parallel arranged chain link bodies (11), and a first baffle (5) and a second baffle (6) distributed up and down and adapted to connect the two chain link bodies (11), and a support structure for mutual support is arranged between two adjacent chain links (1) when the drag chain is kept horizontally arranged.

7. The closed anti-disengagement noise-reduction miniature towline according to claim 6, wherein the supporting structure comprises a first catching groove (61) and a catching block (62) respectively arranged at two ends of the second baffle (6) in the length direction, wherein the catching block (62) of the second baffle (6) of one chain link (1) is adapted to be inserted into the first catching groove (61) of the second baffle (6) of another adjacent chain link (1) when the towline is kept horizontally arranged.

8. The closed anti-drop noise-reducing micro towline according to claim 6 or 7, characterized in that the supporting structure further comprises the limiting groove (2) and the limiting block (3), wherein when the towline is horizontally arranged, the limiting block (3) of one link (1) is abutted against a side wall (22) of the limiting groove (2) of another adjacent link (1).

9. The miniature closed drag chain with the functions of preventing disengagement and reducing noise according to claim 6, wherein the link body (11) comprises a first link plate (12) and a second link plate (13) which are arranged in the left-right direction, and an insertion slot (14) for inserting the second link plate (13) of the adjacent link (1) is arranged between the first link plate (12) and the second baffle plate (6) of one link (1).

10. The miniature closed anti-disengagement noise-reducing drag chain according to claim 6, wherein the second baffle (6) comprises a second baffle main body (63), and a first baffle portion (64) and a second baffle portion (65) which are respectively arranged at two sides of the second baffle main body (63) and extend towards the second baffle main body (63) of the adjacent chain link (1), the second baffle portion (65) extends to the inner side surface of the first baffle portion (64), and the second baffle portion (65) of one chain link (1) and the first baffle portion (64) of the other chain link (1) enclose to form a closed space.

11. The miniature closed anti-disengagement noise-reducing drag chain according to claim 6, wherein the first baffle (5) comprises a first baffle main body (51), and a first extension portion (52) and a second extension portion (53) which are respectively arranged on two sides of the first baffle main body (51) and extend towards the first baffle main body (51) of the adjacent chain link (1), the second extension portion (53) extends to the inner side surface of the first extension portion (52), and the second extension portion (53) of one chain link (1) and the first extension portion (52) of the other chain link (1) enclose to form a closed space.

12. The miniature closed anti-release noise-reducing towline of claim 6, wherein said first flap (5) is removably mounted to said link body (11) by a snap-fit structure comprising:

the connecting shaft (15) is arranged at the top of the chain link main body (11);

the clamping seat is arranged on two sides of the first baffle (5), and is provided with a second clamping groove (54) which is in adaptive clamping connection with the connecting shaft (15), and a first clamping block (55) and a second clamping block (56) which are respectively arranged on two sides of the second clamping groove (54).

13. The closed anti-disengagement noise-reduction micro towline according to claim 12, wherein a damping structure adapted to position and maintain the first baffle (5) in an open state is arranged between the first baffle (5) and the link body (11), and the damping structure comprises a first clamping block (55) arranged on an outer side surface of the second clamping groove (54), and a matching surface arranged on the link body (11) and adapted to be clamped with the first clamping block (55).

Technical Field

The invention relates to the technical field of drag chains, in particular to a closed anti-drop noise-reduction miniature drag chain.

Background

The drag chain is suitable for being used in reciprocating occasions, and is a functional drag chain which can play a role in dragging and protecting built-in cables, oil pipes, air pipes, water pipes and the like.

The drag chain is formed by splicing a plurality of chain links 01, the rotation connection is realized between two adjacent chain links 01 through the hole shaft cooperation, a limiting structure used for limiting the rotation angle between the two adjacent chain links 01 is arranged between the two adjacent chain links 01, the limiting structure comprises a limiting groove 02 arranged on one side of the chain link 01 and a limiting block 03 arranged on the inner side of the chain link 01 and capable of being in adaptive connection with the limiting groove 02 on the adjacent chain link 01, and when the drag chain runs at a high speed at present, the limiting block 03 and a side arm of the limiting groove 02 continuously collide rapidly, so that great noise is generated.

In order to solve the above problem, as shown in fig. 11, it is a common method that elastic strips 04 are disposed on two side walls of a limiting groove 02, and the elastic strips 04 can play a certain buffering role when colliding with a limiting block, so as to reduce noise, but the above scheme has a defect in that: the limiting block is contacted with the elastic strip only when the limiting block is close to the side wall of the limiting groove, and the noise reduction effect of the structure is general due to the fact that the movement speed of the limiting block is high and the impact force is large; in addition, the existing miniature drag chains in the market cannot realize an inner side and outer side totally-enclosed structure, so that foreign matters can easily enter the chain links, and the built-in wire pipes are damaged.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defect of poor noise reduction effect in the prior art, so that the closed anti-drop noise-reduction micro drag chain with good noise reduction effect is provided.

Therefore, the invention provides a closed anti-disengagement noise-reduction miniature drag chain which is formed by splicing a plurality of chain links, wherein a limiting structure used for controlling the rotation angle of the two adjacent chain links is arranged between the two adjacent chain links, the limiting structure comprises a limiting groove arranged on one of the chain links, a limiting block arranged on the other adjacent chain link and capable of being in fit connection with the limiting groove, the limiting groove is provided with a bottom wall and side walls respectively arranged at two sides of the bottom wall, the limiting block is provided with a first surface opposite to the bottom wall and a second surface opposite to the side walls, the closed anti-disengagement noise-reduction miniature drag chain further comprises a damping piece arranged on one of the first surface and the limiting groove, and the damping piece is suitable for sliding friction with a matching surface arranged opposite to the limiting block when the limiting block rotates.

The damping piece is integrally formed on the bottom wall of the limiting groove or the first surface.

The damping piece is provided with elastic arms, and two ends of each elastic arm extend towards the corresponding side wall.

The middle part of elastic arm be equipped with the spacing groove diapire or the connecting portion that first face links to each other, the elastic arm has the branch to be located the first contact surface and the second contact surface of connecting portion both sides, wherein when the stopper rotates, the elastic arm only have first contact surface and second contact surface with the fitting surface contact.

The damping piece is for locating spacing groove diapire or rubber spare on the first face.

The chain link comprises two chain link main bodies arranged in parallel, a first baffle and a second baffle which are distributed up and down and are suitable for connecting the two chain link main bodies, and a supporting structure which is used for supporting each other when the drag chain is horizontally arranged is arranged between every two adjacent chain links.

The supporting structure comprises a first clamping groove and a clamping block which are respectively arranged at two ends of the second baffle in the length direction, wherein when the drag chain is horizontally arranged, the clamping block of the second baffle of one chain link is suitable for being inserted into the first clamping groove of the second baffle of another adjacent chain link.

The supporting structure further comprises the limiting groove and the limiting block, wherein when the drag chain is horizontally arranged, the limiting block of one chain link is abutted against one side wall of the limiting groove of the other adjacent chain link.

The chain link main body comprises a first chain plate and a second chain plate which are arranged on the left and right sides, wherein an insertion groove into which the second chain plate of the other adjacent chain link can be inserted is formed between the first chain plate and the second baffle of one chain link.

The second baffle includes second baffle main part to and divide and locate second baffle main part both sides, first baffle portion and the second baffle portion that extend towards the second baffle main part direction of adjacent chain link, the second baffle portion extends to the medial surface of first baffle portion, one of them chain link the second baffle portion and another chain link first baffle portion enclose to close and form the enclosure space.

The first baffle comprises a first baffle main body, a first extending portion and a second extending portion, wherein the first extending portion and the second extending portion are arranged on two sides of the first baffle main body and extend towards the first baffle main body of an adjacent chain link, the second extending portion extends to the inner side face of the first extending portion, and the second extending portion of one chain link and the first extending portion of the other chain link are enclosed to form a closed space.

The first baffle is detachably arranged on the chain link main body through a clamping structure, the clamping structure comprises a connecting shaft and a clamping seat, and the connecting shaft is arranged at the top of the chain link main body; the clamping seat is arranged on two sides of the first baffle and provided with a second clamping groove matched and clamped with the connecting shaft, and a first clamping block and a second clamping block which are respectively arranged on two sides of the second clamping groove.

The damping structure is arranged between the first baffle and the chain link main body and is suitable for enabling the first baffle to be positioned and kept in an open state, and the damping structure comprises a first clamping block arranged on the outer side surface of the second clamping groove and a matching surface arranged on the chain link main body and capable of being matched and clamped with the first clamping block.

The technical scheme of the invention has the following advantages:

1. the closed anti-disengagement noise-reduction miniature tow chain provided by the invention has the advantages that the limiting structure is arranged between two adjacent chain links, the limiting structure comprises a limiting groove arranged on one chain link and a limiting block arranged on the other adjacent chain link and in adaptive connection with the limiting groove, the limiting block is provided with a first surface opposite to the bottom wall of the limiting groove, and a damping part is arranged on one of the first surface and the limiting groove and is suitable for sliding friction with a matching surface arranged opposite to the limiting block when the limiting block rotates, namely the limiting block can reduce the contact speed and the collision force with the side wall of the limiting groove under the damping action of friction force before rotating to be in contact with the side wall of the limiting groove.

2. According to the closed anti-disengagement noise-reduction miniature tow chain provided by the invention, the damping piece is integrally formed on the bottom wall of the limiting groove or the first surface, so that the structure is simpler, the processing is convenient, and the production cost is reduced.

3. According to the closed anti-disengagement noise-reduction miniature tow chain provided by the invention, the damping part is provided with the elastic arms, the two ends of each elastic arm extend towards the corresponding side wall, and the elastic arms can be elastically deformed under pressure, namely, the limiting block is not only under the action of sliding friction force but also under the action of elastic damping force in the movement process, so that the contact speed before the limiting block collides with the side wall of the limiting groove is further reduced, and the noise reduction effect is better.

4. The invention provides a closed anti-disengagement noise-reduction miniature tow chain, wherein the middle part of an elastic arm is provided with a connecting part connected with the bottom wall of a limit groove or a first surface, the elastic arm is provided with a first contact surface and a second contact surface which are respectively arranged at two sides of the connecting part, wherein when the limiting block rotates, only the first contact surface and the second contact surface of the elastic arm are contacted with the matching surface, because the connecting part has smaller elasticity or almost no elasticity, when the limiting block rotates to the position opposite to the connecting part, a small gap is arranged between the damping part and the elastic arm, so that the hard contact between the limiting block and the contact surface at one side of the connecting part of the damping part and the blocking condition caused by large damping force can be avoided, when the cooperation face upwards or during the downward rotation, the contact friction between cooperation face and first contact surface or the second contact surface crescent to better play the effect that slows down contact speed and dynamics to the stopper.

5. The invention provides a closed anti-disengagement noise-reduction miniature towline, which comprises a first clamping groove and a clamping block which are respectively arranged at two ends of a second baffle in the length direction, wherein when the towline is horizontally arranged, the clamping block of the second baffle of one chain link is suitable for being inserted into the first clamping groove of the second baffle of another adjacent chain link, and when the towline is horizontally arranged, the supporting structure can enable two adjacent chain links to keep a certain supporting effect to play a role in preventing collapse, so that the overall operation stability of the towline can be enhanced, and the overhead performance and the load-carrying performance can be improved.

6. The supporting structure of the closed anti-disengagement noise-reduction miniature drag chain further comprises a limiting groove and a limiting block, wherein when the drag chain is horizontally arranged, the limiting block of one chain link is abutted against one side wall of the limiting groove of the other adjacent chain link, so that the two adjacent chain links can further keep a certain supporting effect, and the overhead performance and the load-carrying performance are improved.

7. The invention provides a closed anti-disengagement noise-reduction miniature drag chain, wherein a chain link main body comprises a first chain plate and a second chain plate which are arranged at the left and right sides, an inserting groove for inserting the second chain plate of the other adjacent chain link is arranged between the first chain plate and a second baffle of one chain link, and when the closed anti-disengagement noise-reduction miniature drag chain is assembled, the second chain plate can be clamped and fixed by the first chain plate and the second baffle after the second chain plate is inserted into the inserting groove, so that the two adjacent chain links can be prevented from disengaging to cause disjointing, and the overhead performance and the load-carrying performance of the drag chain are improved.

8. The closed anti-disengagement noise-reduction miniature drag chain provided by the invention has the advantages that the second baffle comprises a second baffle main body, a first baffle part and a second baffle part which are respectively arranged at two sides of the second baffle main body and extend towards the direction of the second baffle main body of the adjacent chain link, the second baffle part extends to the inner side surface of the first baffle part, the second baffle part of one chain link and the first baffle part of the other chain link are enclosed to form a closed space, and thus the arrangement can realize full closure between the second baffles of the two adjacent chain links and prevent foreign matters at the outer side from entering the chain links, thereby avoiding damage to the built-in wire pipe.

9. The invention provides a closed anti-disengagement noise-reduction miniature tow chain, which comprises a first baffle main body, a first extending part and a second extending part, wherein the first extending part and the second extending part are respectively arranged at two sides of the first baffle main body and extend towards the direction of the first baffle main body of an adjacent chain link, the second extending part extends to the inner side surface of the first extending part, the second extending part of one chain link and the first extending part of another chain link are enclosed to form a closed space, and thus the arrangement can realize full closure between the first baffles of two adjacent chain links and prevent foreign matters at the outer side from entering the chain links, thereby avoiding damage to built-in wire pipes.

10. According to the closed anti-disengagement noise-reduction micro tow chain provided by the invention, the damping structure which is suitable for positioning and keeping the first baffle in an open state is arranged between the first baffle and the chain link main body, the damping structure comprises the first clamping block which is arranged on the outer side surface of the second clamping groove and the matching surface which is arranged on the chain link main body and can be in adaptive clamping connection with the first clamping block, and the damping structure can position the first baffle to an open position after being opened without slipping, so that an assembler can conveniently fill a spool.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a perspective view of a closed anti-drop noise-reducing micro tow chain according to the present invention;

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

FIG. 3 is an enlarged view of the structure of portion A in FIG. 2;

FIG. 4 is an enlarged view of the structure of part B in FIG. 2;

FIG. 5 is an enlarged view of the structure of the portion C in FIG. 2;

FIG. 6 is an enlarged view of the structure of the portion D in FIG. 2;

FIG. 7 is a perspective view of two adjacent links of FIG. 1 with the first flap open;

FIG. 8 is a schematic diagram of the exploded structure of FIG. 7;

FIG. 9 is a perspective view of FIG. 7 from another perspective;

FIG. 10 is a cross-sectional view of FIG. 7;

fig. 11 is a schematic structural diagram of a limiting structure in the prior art.

Description of reference numerals: 01. a chain link; 02. a limiting groove; 03. a limiting block; 04. an elastic strip;

1. a chain link; 11. a link body; 12. a first link plate; 13. a second link plate; 14. a slot; 15. a connecting shaft; 16. a rotating shaft; 17. a jack; 2. a limiting groove; 21. a bottom wall; 22. a side wall; 3. a limiting block; 31. a first side; 32. a second face; 4. a damping member; 41. a resilient arm; 42. a connecting portion; 43. a first contact surface; 44. a second contact surface; 5. a first baffle plate; 51. a first baffle body; 52. a first extension portion; 53. a second extension portion; 54. a second card slot; 55. a first clamping block; 56. a second fixture block; 6. a second baffle; 61. a first card slot; 62. a clamping block; 63. a second baffle main body; 64. a first baffle portion; 65. a second baffle portion.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. 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 the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Examples

The embodiment provides a closed anti-drop noise-reduction miniature drag chain, as shown in fig. 1 and 2, which is formed by splicing a plurality of chain links 1, wherein each chain link 1 comprises two chain link main bodies 11, a first baffle 5 and a second baffle 6.

The link main body 11, as shown in fig. 7, includes a first link plate 12 formed on the right side and a second link plate 13 formed on the left side, and a connecting shaft 15 is provided on the top of the link main body 11.

The second link plate 13 has a rotating shaft 16 formed therein, and a limiting groove 2 formed at an edge thereof, as shown in fig. 2, 3, 4, and 5, the limiting groove 2 has a bottom wall 21 and side walls 22 respectively disposed at two sides of the bottom wall 21, the bottom wall 21 is formed with a damping member 4 adapted to be in sliding friction with the limiting block 3, the damping member 4 has an elastic arm 41, two ends of the elastic arm 41 extend toward the corresponding side walls 22, a connecting portion 42 connected to the bottom wall 21 of the limiting groove 2 is disposed at a middle portion of the elastic arm 41, the damping member 4 is in an H shape with the bottom wall 21, the elastic arm 41 has a first contact surface 43 and a second contact surface 44 respectively disposed at two sides of the connecting portion 42, wherein only the first contact surface 43 and the second contact surface 44 of the elastic arm 41 are in contact with the first surface 31 when the limiting block 3 rotates.

The first link plate 12 has an insertion hole 17 formed in the middle thereof, and a stopper 3 disposed on the inner side surface thereof, as shown in fig. 2, 3, 4 and 5, when two adjacent links 1 are assembled, the rotating shaft 16 of one link 1 is adapted to be inserted into the insertion hole 17 of the other link 1, and the stopper 3 of one link 1 is adapted to be inserted into the stopper groove 2 of the other link 1, and the stopper 3 has a first surface 31 disposed opposite to the bottom wall 21, and a second surface 32 disposed opposite to the side wall 22.

As an alternative embodiment, the damping member 4 is integrally formed on the first surface 31 of the stopper 3, and the damping member 4 can abut against the bottom wall 21 of the stopper groove 2.

In an alternative embodiment, the damping member 4 is a rubber member disposed on the bottom wall 21 or the first surface 31 of the stopper groove 2.

The second baffle 6, as shown in fig. 2, 6, 8, and 9, includes a second baffle main body 63, and a first baffle portion 64 and a second baffle portion 65 respectively disposed on two sides of the second baffle main body 63 and extending toward the second baffle main body 63 of the adjacent link 1, when two adjacent links 1 are assembled, the second baffle portion 65 extends to the inner side surface of the first baffle portion 64, and the second baffle portion 65 of one link 1 and the first baffle portion 64 of another link 1 enclose to form a closed space. In this embodiment, a fixture block 62 is disposed at an edge of the first baffle portion 64, a first slot 61 is disposed between the second baffle portion 65 and the second baffle main body 63, and when the drag chain is horizontally disposed, the fixture block 62 of the second baffle 6 of one link 1 is suitable for being inserted into the first slot 61 of the second baffle 6 of another adjacent link 1. The slots 14 are formed between both sides of the first baffle portion 64 and the corresponding first link plates 12, and when two adjacent chain links 1 are assembled, the second link plate 13 of one chain link 1 is suitable for being inserted into the slot 14 of the other adjacent chain link 1 so as to be clamped and fixed.

The first baffle 5, as shown in fig. 2, 6, 7 and 10, includes a first baffle main body 51, and a first extending portion 52 and a second extending portion 53 respectively disposed on both sides of the first baffle main body 51 in the width direction and extending toward the first baffle main body 51 of the adjacent link 1, wherein the second extending portion 53 extends to the inner side surface of the first extending portion 52, the second extending portion 53 of one link 1 and the first extending portion 52 of another link 1 enclose to form a closed space, both sides of the first baffle 5 in the length direction are provided with a clamping seat, the clamping seat has a second clamping groove 54 adapted to be clamped with the connecting shaft 15, and a first clamping block 55 and a second clamping block 56 respectively disposed on both sides of the second clamping groove 54, a damping structure adapted to position and maintain the first baffle 5 in an open state is disposed between the first baffle 5 and the link main body 11, the damping structure comprises a first clamping block 55 arranged on the outer side surface of the second clamping groove 54 and a matching surface arranged on the chain link main body 11 and capable of being in adaptive clamping connection with the first clamping block 55.

The invention provides a closed anti-disengagement noise-reduction miniature drag chain, wherein a limiting structure is arranged between two adjacent chain links 1, the limiting structure comprises a limiting groove 2 arranged on one chain link 1 and a limiting block 3 arranged on the other adjacent chain link 1 and in adaptive connection with the limiting groove 2, the limiting block 3 is provided with a first surface 31 arranged opposite to the bottom wall 21 of the limiting groove 2, a damping part 4 is arranged on one of the first surface 31 and the limiting groove 2, the damping part 4 is suitable for sliding friction with a matching surface arranged opposite to the limiting block 3 when the limiting block 3 rotates, namely the limiting block 3 can reduce the contact speed and the collision force with the side wall 22 of the limiting groove 2 due to the damping action of friction force before rotating to contact with the side wall 22 of the limiting groove 2, and compared with the prior art, the noise reduction effect is better.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.