KR20080077349A - Flat link chain - Google Patents

Abstract

The invention relates to a flat link chain (1) from a plurality of link plates(2, 2') which form respective stacks of link plates (8, 8') which are connected to respective adjacent stacks of link plates by means of a joint (4, 5, 5', 11). At least a part of the link plates comprises a stop (13, 19, 19', 20, 20', 21, 21', 22) which limits a curvature of the flat link chain in a direction of curvature about the joint.

Description

Flat Link Chain {FLAT LINK CHAIN}

The present invention relates to a flat link chain consisting of a plurality of link plates each forming link plate packets each connected by neighboring link plate packets.

Flat link chains are used, for example, in continuously variable transmission (CVT) gears, in which the gear ratio can be continuously adjusted between conical pulleys which can be spaced apart, or as toothed flat link chains with toothed wheels. . In the case of the flat link chain as described above, by the force acting on the chain member when the chain is inserted into or taken out of the chain wheel or CVT-gear disk set of the toothed flat link chain gear. So-called (chain-) belt vibrations are generated. The belt vibration at this time is the transverse vibration of the chain occurring between the disc sets or between the chain wheels. The collision of the tooth flanks in the toothed flat link chain in connection with the polygonal effect of the link chain causes vibrations in the chain belt. In the case of flat link chains, a similar phenomenon occurs in the CVT-gear between the roller front and the disc set. By means of the insertion pulses that occur when the tooth link plate is inserted when engaged with the tooth wheels of the tooth flat link chain, vibrations can be achieved which can be achieved according to the chain revolutions of various frequencies. The vibrations can adversely affect the acoustic properties of such chain gears. In order to avoid such undesirable effects on the acoustic properties of the gears, it is possible to install additional remedies such as sliding rails or damping members inside the gears, but such measures require additional installation space and , Increases the manufacturing cost.

It is known to reduce chain belt vibrations by various measures applied to the chain. In US 1,780,040 a toothed link plate with a crank, for example, is described. The toothed link plate is blocked in one direction by vibration of the chain. The link plate may be implemented as a guide link plate. One disadvantage of this solution is that the rigidity of the link plate increases, especially as the back region of the link plate is formed very hard, which results in an increase in the tensile stress inside the link plate bore. A further disadvantage is that the crank increases the installation space demand of the chain and the manufacturing cost of the individual link plates is expensive.

The first object of the present invention is to provide a flat link chain which can be manufactured simply and economically and which reduces chain belt vibration. The second object of the present invention is to provide a flat link chain, in which further damping measures such as, for example, sliding rails or damping members can be omitted, thereby reducing the space required for installing the gears and the cost required to manufacture the gears. To provide.

The above problem consists of a plurality of link plates each forming link plate packets respectively connected to neighboring link plate packets by a joint, wherein at least one portion of the link plate has a stop member, The flat link chain is solved by a flat link chain which is configured to limit the warpage of the flat link chain in one bending direction around the joint. Preferably, the warp of the flat link chain in the warp direction is limited against warpage that occurs when the chain wheel or disk set is wrapped, that is, the warp necessary for the wrapping action is not limited. The flat link chain may be a toothed flat link chain.

The stop member may be an edge supported at the rear of the link plate as long as the flat link chain is bent inward. In this case, it is preferable that the link plates with the stop member have one recess between the joints.

Alternatively, the stop member may comprise at least one nose feature which engages in one recess of the guide link plate. In a further embodiment, the stop member is a lateral flank of the link plate. In a further embodiment, the joint comprises a bolt, the stop member comprises a blade, which blade is supported on the bolt of one neighboring joint when the flat link chain is bent inward. In a further embodiment, the stop member is an angled blade of one link plate that is supported at the back of the link plate of one neighboring joint when the flat link chain is bent inward.

Preferably, each one roller of one joint is connected to link plates of one link plate packet through a fixing opening, and two rollers of neighboring link plate packets form a joint, in which case each one rolling The rollers having a profile can be rolled and / or sliding in superimposition with one another. Preferably, the link plate packets comprise at least one guide link plate. The guide link plate may be disposed in a link plate packet, but may also be disposed at an outer end of each of the link plate packets.

The problem mentioned at the outset is solved by a link plate for a flat link chain having features related to the link plate of the chain according to the invention and a gear with a flat link chain according to the invention. The gear may be a cog wheel gear or a gear with a variable speed ratio, in particular a CVT gear. Correspondingly, the flat link chain may be a toothed flat link chain. In this case one toothed flat link chain generally has a plurality of guide link plates.

Embodiments of the present invention are described in detail below with reference to the accompanying drawings.

1 is a first embodiment of a guide link plate according to the present invention.

FIG. 2 is a cross sectional view of a toothed flat link chain with a guide link plate according to FIG. 1; FIG.

3 is a schematic view showing a state where the toothed flat link chain according to FIG. 2 is bent inward;

4 is a partially enlarged cross-sectional view of FIG. 3.

5 is a first embodiment of a toothed link plate according to the invention.

6 is a cross-sectional view of a toothed flat link chain with toothed link plates according to FIG. 5.

FIG. 7 is a schematic view showing the toothed flat link chain having the toothed link plate according to FIG. 5 in a first folded state. FIG.

FIG. 8 is a cross-sectional view showing the toothed flat link chain according to FIG. 7 in a second folded state. FIG.

9 is a second embodiment of a toothed link plate according to the invention.

10 is a cross-sectional view of a toothed flat link chain with toothed link plates according to FIG. 9.

FIG. 11 is a cross-sectional view of the toothed flat link chain according to FIG. 10 in a long stretched state. FIG.

12 is a schematic view of the view according to FIG. 11 with the toothed flat link chain bent inward;

13 is a third embodiment of a toothed link plate according to the present invention.

14 is a cross-sectional view of a toothed flat link chain with toothed link plate according to FIG. 13.

Fig. 15 is a side view showing one toothed flat link chain folded inward;

16 is a partially enlarged cross-sectional view of FIG. 15.

17 is a fourth embodiment of a toothed link plate according to the invention.

18 is a schematic view showing the toothed link plate according to the present invention shown in FIG. 17 from another side.

19 is a cross-sectional view of one toothed flat link chain with toothed link plates according to FIGS. 17 and 18.

20 is a cross-sectional view showing one toothed flat link chain in a folded state.

21 is a side view of one toothed flat link chain.

22 is a plan view of one toothed flat link chain.

Explanation of symbols on the main parts of the drawings

1: flat link chain 2, 2.1, 2.2 ...: link plate

2 ': counterpart link plate 4: counterpart bolt

5: Roller assigned to link plate

5 ': roller assigned to the corresponding link plate

7, 7 ': rolling profile

8, 8 ': link plate packet (link plate stack, chain member)

9: tooth 10: guide link plate

11: receiving bore 12: roller rear

13: edge 14: recess

15: Base 16: Blade

17: Link plate rear 18, 18 ': end

19, 19 ': nose shape 20, 20': flank flank

21, 21 ': blade 22: edged blade

23: initial width 24: stop side

25: Width of toothed link plate

26: width of the edged blade 21 at the stop side 24

27: stop

FIG. 21 shows a side view of a toothed flat link chain according to the prior art with an assembly consisting of two link plates and FIG. 22 shows a top view of the toothed flat link chain. With reference to FIGS. 21 and 22, the basic structure of the flat link chain and toothed flat link chain and the terms used and described in the embodiments according to the invention are explained. Although the present embodiments are described by way of an example of one flat link chain having a combination consisting of two link plates, the above embodiments may be applied to a flat link chain having a combination consisting of three link plates as well. The flat link chain 1 comprises a plurality of link plates 2 and corresponding link plates 2 '. The link plates 2 and the corresponding link plates 2 'are alternately arranged and connected to a joint bolt 4 that functions as a joint. Thus, both ends of one link plate 2 are connected to one or two corresponding link plates 2 'by one joint, and both ends of the corresponding link plate 2' correspondingly have one It is connected to one or two link plates 2 by a joint of. The joint bolt 4 may be integrally formed, but preferably two parts, in which case the link plate 2 is assigned with rollers 5 one by one, and the rollers correspond to the corresponding links. The rolling operation is carried out on the roller 5 'assigned to the plate 2'. The rollers 5, 5 ′ also each have one rolling profile (7 or 7 ′), by means of which the rollers can be rolled up or slid over one another. The rolling profiles 7, 7 ′ may be the same or different. The link plate 2 and the corresponding link plate 2 'are horizontally overlapped with respect to the traveling direction L indicated by an arrow having the reference numeral L, thereby being horizontally parallel to the traveling direction L. Between the two joint bolts 4 arranged, one overlapping link plate 2 'is disposed overlapping, and on the contrary, two corresponding link plates 2 arranged side by side horizontally with respect to the traveling direction L are arranged. One link plate 2 is overlapped with each other between '). This does not apply to a link plate 2 or a corresponding link plate 2 ′ having only one neighboring link plate on only one side, which is naturally disposed outwardly in the transverse direction L, respectively. . The link plate packets (also referred to as link plate stacks) of the link plate 2 formed as above form one chain member 8 for each packet and correspondingly of the corresponding link plate 2 ' The (correspondence) link plate packets form one chain member 8 'for each packet. In this embodiment, the link plate 2 and the corresponding link plate 2 'may be identical parts, and the link plate 2 and the corresponding link plate 2' are different from each other only in one point of being arranged. It can be seen that. As such, the following is only referred to the link plate 2, since it is the same as the corresponding link plate except that the link plate is arranged in a packet manner. 22 shows one link plate packet consisting of three link plates 2 and two corresponding link plates 2 ', in which case any other number of link plates 2 and corresponding link plates. Link plate packets with 2 'may also be provided.

In the case of a toothed flat link chain, the link plates 2 are provided with one link plate tooth 9-as can be seen in FIG. In the case of flat link chains, for example for use in CVT gears, the link plate teeth 9 are absent. By means of the link plate teeth 9, the flat link chain 1 can be engaged with one tooth wheel. In this case, the pitch between the link plate 2 and the corresponding link plate 2 'is designed such that when the chain is elongated, one uniform pitch as a whole appears between the link plate teeth 9. . The link plate teeth 9 are provided in the corresponding link plate 2 ', so that the entire link plate and the corresponding link plate are provided with the link plate teeth 9, respectively. However, two link plate teeth 9 are provided only to the link plate or only to the corresponding link plate 2 'or only one link plate tooth to the link plate 2 and the corresponding link plate 2', respectively. It is also possible to provide (9). The link plate packets are closed at both sides of the guide link plate 10.

1 shows a guide link plate 10 according to the invention with a receiving bore 11 for receiving a roller 5 or 5 ′. The guide link plate 10 surrounds the roller rear surface 12, and an edge is disposed on the roller rear surface. Between the receiving bores 11 is formed a recess 14 which penetrates the edge 13, the roller rear face 12 and a part of the base 15. The base 15 includes a blade 16 on the side facing away from the roller rear face 12. 2 shows a guide link plate 10 according to the invention in one cross section of a toothed flat link chain 1. The guide link plate 10 is part of one link plate packet 8 or 8 'as described in FIGS. 21 and 22, and is fixedly connected to the corresponding roller 5 or 5'. In FIG. 3, one cut portion of the flat link chain 1 is shown in side view in a bent or folded state towards the roller rear face 12. In this embodiment, each front end and the rear end of the edge 13 are not in contact with the lower surface of the link plate rear face 17 of the link plate 2 as long as they are adjacent.

5 shows a first embodiment 2.1 of a toothed link plate 2 according to the invention. The base 15 of the toothed link plate 2.1 comprises a receiving bore 11 for two rollers 5, 5 ′, each of which is functionally coupled to each other of two different link plate stacks. One nose shape 19 or 19 'is arranged at the front end 18 or 18', respectively, and the nose shape projects above the base 15 from the side with respect to the chain travel direction L. FIG. . FIG. 6 shows a cross section of a flat link chain with toothed link plate 2.1 according to FIG. 5. A series of tooth link plates 2.1 arranged successively in the chain travel direction L is arranged next to the series of guide link plates 10. The nose features 19 and 19 ′ engage in one recess so as to be comparable to the recess 14 shown in FIG. 1 of the guide link plate 10, respectively. Fig. 7 shows a bent state of one cross section of the toothed flat link chain 1 according to Fig. 6, in which case the toothed flat link chain 1 is bent inward in the direction of the tooth. In this state, the nose portion 19 is not adjacent to the guide link plate 10. 8 shows the toothed flat link chain 1 according to FIG. 7 being bent in the opposite direction and thus in the direction of the link plate rear face 17. In this state the nose feature 19 is inserted into the recess 14 of the guide link plate to prevent further bending or bending.

9 a second embodiment 2.2 of a toothed link plate 2 according to the invention is shown. Only the differences between the toothed link plate 2.2 and the example shown in FIG. 5 are described in this section. The toothed link plate 2.2 has lateral flanks 20 and 20 'instead of the nose features 19 or 19'. FIG. 10 shows a cross section of a flat link chain 1 with toothed link plates 2.2 according to FIG. 9. 10 and 11 show the manner of operation of the lateral flanks. Fig. 11 also shows the elongated state of the chain, and Fig. 12 shows the state in which the chain is bent inward with the part bent inward in the direction of the link plate rear face 17. In the illustration according to FIG. 12, the flanks 20 and 20 ′ of neighboring toothed link plates are adjacent to each other to prevent further bending or bending of the flat link chain 1.

Figure 13 shows a third embodiment 2.3 of a toothed link plate 2 according to the invention. In this case, the blades 21 and 21 'extending in the chain traveling direction L are disposed as the stop members. The blades 21 and 21 ′ are supported by neighboring bolts 4 or rollers 5, 5 ′ when the flat link chain 1 is bent inward. 14 shows a cross section of a flat link chain 1 with toothed link plates 2.3 according to the invention. The toothed link plates 2.3 are arranged in a link plate assembly, so that in the rows in which the toothed link plates 2.3 are arranged, they are denoted as bolts or rollers 5 and 5 ', respectively, as bolts 4 according to FIG. May be free). According to the example of FIG. 15, blades 21 and 21 ′ can be supported on the rollers 5, 5 ′ when the toothed flat link chain 1 is bent inward. FIG. 16 shows how the link plates 21 and 21 ′ of the neighboring tooth link plate 2.3 are supported on the rollers 5, 5 ′ respectively when the toothed flat link chain 1 is bent inward.

17 and 18 show a fourth embodiment 2.4 of the toothed link plate 2 according to the invention. In this case, as the stop member, the edged blade 22 is disposed on the link plate rear surface 17. The edged blade 22 extends only over a portion of the length of the link plate back surface 17 and corresponds to an initial width corresponding to the width 23 of the base 15 of the tooth link plate 2.4. Has 23. The edged blade 22 on one stop side 24 extends so that the width 26 of the blade in the area of the stop side 24 exceeds the width 25 of the toothed link plate 2.4. do. The region of the link plate back surface 17 which does not overlap with the edged blade 22 has a stop surface 27, and the edged blade 22 of the toothed link plate 2.4 is edged by one neighboring tooth. The lower surface of the blade 22 can stop on the stop surface at the stop side 24. 19 shows one cross section of a toothed flat link chain 1 with toothed link plate 2.4 according to FIGS. 17 and 18. The toothed link plates 2.4 are all provided in the toothed flat link chain 1 in the same direction. 20 clearly illustrates the mode of action of the stop member of the embodiment according to FIGS. 17 and 18. When the toothed flat link chain is bent in the direction of the link plate rear face 17, the edged blades 22 stop at the stop surfaces 27 of their respective toothed link plates.

Claims (11)

A plurality of link plates 2, 2 respectively forming link plate packets 8, 8 'connected to neighboring link plate packets 8, 8' by joints 4, 5, 5 ', 11, respectively. In the flat link chain 1 composed of '), At least one portion of the link plate 2, 2 ′ has stop members 13, 19, 19 ′, 20, 20 ′, 21, 21 ′, 22, the stop member having the flat link chain 1 Flat link chain, characterized by limiting the deflection of the to one bending direction around the joints (4, 5, 5 ', 11). The method of claim 1, The flat link chain comprises at least one guide link plate 10, the stop means surrounding one edge 13 of the guide link plate 10, the edge of which the flat link chain 1 enters in. A flat link chain, characterized by being supported by a back plate 17 adjacent to one another when it is folded. The method of claim 2, Link plates provided with said stopping means have a recess (14) between the joints (4, 5, 5 ', 11). The method of claim 1, Said stop means comprise at least one nose feature (19, 19 '), said nose feature engaging in a recess (14) of one guide link plate. The method of claim 1, Flat stop chain, characterized in that the stop means is one side flank (20, 20 ') of the link plate (2, 2'). The method of claim 1, The joint comprises bolts 4, 5, 5 ′, the stop means comprising blades 21, 21 ′, which blades are bolted to one adjacent joint when the flat link chain is bent inward. 5, 5 ') is supported on the flat link chain. The method of claim 1, The stop means comprise edged blades 22 of the link plates 2, 2 ', which are supported by the link plate rear surface 17 of the link plate as one adjacent when the flat link chain is bent inward. Flat link chain, characterized in that. The method according to any one of claims 1 to 7, One roller 5 of each joint 4, 5, 5 ′ is connected to the link plates 2, 2 ′ of the link plate packet 8, 8 ′ by a fixing opening 11, and adjacent The two rollers 5, 5 ′ of the link plate packet form joints 4, 5, 5 ′, and the rollers 5, 5 ′ each overlap one rolling profile 7, 7 ′. A flat link chain, characterized by being capable of rolling and / or sliding motion. The method according to any one of claims 1 to 8, Flat link chain, characterized in that the link plate packet (8, 8 ') comprises at least one guide link plate (10). Link plate for a flat link chain, characterized in that it relates to a link plate (2, 2 ') in claims 1 to 9. Gear with a flat link chain according to claim 1.

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