CN1301375C

CN1301375C - Silent chain

Info

Publication number: CN1301375C
Application number: CNB2003101120021A
Authority: CN
Inventors: 吴瑞章
Original assignee: KMC CHAIN INDUSTRIAL (SUZHOU) Co Ltd
Current assignee: KMC CHAIN INDUSTRIAL (SUZHOU) Co Ltd
Priority date: 2003-10-30
Filing date: 2003-10-30
Publication date: 2007-02-21
Anticipated expiration: 2023-10-30
Also published as: CN1611808A

Abstract

The present invention relates to a mute chain capable of being clamped on a fluted disc with a plurality of clamping teeth. The mute chain is formed by connecting a plurality of serial connecting units in series, wherein each serial connecting unit comprises two spaced outer chain pieces, an inner piece unit arranged between the outer chain pieces, and two chain shafts used for connecting the outer chain pieces, the inner piece unit and the inner piece unit between the adjacent serial connecting units in series, each inner piece unit comprises a plurality of metal inner pieces, and each metal inner piece is provided with a butting face for defining a butting groove clamped with the clamping teeth. The mute chain is characterized in that each inner piece unit comprises at least one sound-attenuating inner piece made of a non-metal material, a sound-attenuating butting face for defining a sound-attenuating butting slot is arranged on the sound-attenuating inner piece, and compared with the butting face, the sound-attenuating butting face is protruded towards the direction of the fluted disc.

Description

Silencing chain

Technical field

The present invention relates to a kind of chain, particularly a kind ofly finishes snap action with the latch that abuts against on mode and the fluted disc, and has the silencing chain than the underneath drive noise.

Background technique

Chain is a kind of use field driving parts widely, the form of assembling is roughly numbered shown in No. 545536, No. 542322, No. 531606 case as the Taiwan patent announcement, be connected into the link spring shape of sealing by many serial connection unit strings, above-mentioned chain can be crossed between two fluted discs separately, stretch into by the latch on the fluted disc and to be fastened between chain two adjacent chain sheets, reach the purpose of transmission power.This kind utilizes spacer chain sheet in twos, though the chain that defines one by one for the space of latch engaging uses for many years, but because the chain of this kind kenel in use, the latch of fluted disc must stretch in twos between the chain sheet, therefore, and in the process of running, the inner side surface meeting and the latch surface of the chain sheet of this chain abut against, rub, therefore, the noise of the chain of this type when transmission is bigger, and bulk strength is also relatively poor.

For noise and the enhancing intensity that reduces chain transmission, in existing technology, have a kind of as the U.S. the 6th, 203,460 B1,6,595,882 B2,6,575, silencing chain (Silentchain) shown in U.S.'s patent of invention cases such as 861 B2, it is a variety of that the assembling kenel of this kind silencing chain has, but its common characteristic is to form the short slot that abuts against that can abut against for the latch of fluted disc on the outer shroud wall of contiguous fluted disc on the chain sheet.Owing to cooperate latch on the fluted disc needn't stretch between two at interval chain sheets, therefore, this kind of drive can effectively reduce friction and the noise between chain and latch to this kind silencing chain when transmission, so be called " silencing chain " by the dealer.Because the part of existing silencing chain is all by for example: metallic material such as steel are made, and the fluted disc that this silencing chain of confession abuts against is also all by the metal manufacturing, therefore, though this silencing chain is by on the latch that is located at fluted disc in the mode that abuts against, but the moment of chain and fluted disc engaging, with the metal chain sheet directly and the metal fluted disc lean, thereby can produce bigger transmission noise, this designs the problem that haves much room for improvement for existing silencing chain.

Summary of the invention

The object of the present invention is to provide a kind of silencing chain that reduces the transmission noise.

Silencing chain of the present invention can have on the fluted disc of many latches across one, and form by many serial connections unit serial connection, each serial connection unit all comprises: the interior blade unit of the outer chain sheet of two internal and external partitions, between between this outer chain sheet, and two be used to be connected in series above-mentioned outer chain sheet, the chain rivet of the interior blade unit of blade unit and adjacent string order unit in this.Wherein should in blade unit comprise sheet in the multi-disc metal, sheet has two at interval inner ends in each metal, and one between between this inner end and define a supporting surface that abuts against short slot, the above-mentioned short slot that abuts against is towards this fluted disc.

The invention is characterized in: blade unit comprises that a slice at least subtracts sheet in the sound by what nonmetallic material were made in this, above-mentioned subtract sheet in the sound have two at interval subtract the sound end, and one subtract between the sound end and define a sound that subtracts that subtracts the sound arrival slot between this and support face, and wherein this subtracts sound and supports face and give prominence to than the direction of past this fluted disc of supporting surface.

When the serial connection unit of this silencing chain is about to be crossed on the latch of fluted disc, make and subtract sound by nonmetallic material and support comparatively outstanding the subtracting of face sheet will abut against with latch earlier mutually in the sound, prevent that whereby direct the and metal fluted disc of sheet leans in the metal, to reduce the transmission noise of this silencing chain further.

Brief Description Of Drawings

Below in conjunction with accompanying drawing,, will make technological scheme of the present invention and other beneficial effect apparent by detailed description to preferred embodiment of the present invention.In the accompanying drawing,

Fig. 1 is the user mode side view of a preferred embodiment of chain of the present invention;

Fig. 2 is the part three-dimensional exploded view of this preferred embodiment;

Fig. 3 is the part combination of side view of this preferred embodiment; And

Fig. 4 is the part combination of side view of a similar Fig. 3.

Embodiment

Consult Fig. 1,2, the preferred embodiment of silencing chain of the present invention can transmission on a fluted disc unit 1, and fluted disc unit 1 comprises two fluted discs 11 that are provided with at interval, and a plurality of equal angular latches 111 are set on each fluted disc 11.And silencing chain of the present invention is formed by many serial connections unit 2,2 ' serial connection, each serial connection unit 2 all comprises: the outer chain sheet 21 of two internal and external partitions, an interior blade unit 3 between 21 of this outer chain sheets, and two support the leftist side right septum and being used for be connected in series on the adjacent serial connection unit 2,2 ' outer chain sheet 21 and in the chain rivet 22 of blade unit 3.

Wherein metallic material is die-cut forms for steel etc. for these outer chain sheets 21, each outer chain sheet 21 all comprise two between left and right every outer end 211, be engaged on the outer rank company headquarters 212 of 211 of this outer ends and contiguous latches 111, and one between this outer end 211 and opening wherein offer an outer shaft hole 214 of passing for chain rivet 22 on each outer end 211 away from the notch part 213 of latch 111.

Consult Fig. 3, should in blade unit 3 comprise the multi-disc left and right sides staggered and in the metal of 21 of this outer chain sheets sheet 31, and a slice is interted the sheet 32 in the sound that subtracts of 31 of in this metal sheets at least, the quantity of sheet 31 is five in this metal of present embodiment, and the quantity that subtracts sheet 32 in the sound is two, and sheet 31 and subtracting in the configuration of sheet 32 in the sound in metal, each sheet subtracts in the interior sheet 32 of sound and this metal overlapping inside and outside a slice at least in the sheet 31, for example Fig. 2 left side to subtract in the sound in the sheet 32 and three-piece metal sheet 31 overlapping, and the right side to subtract in the sound sheet 32 overlapping with the interior sheets 31 of two metals.Sheet 31 is made by metallic material such as steel in the above-mentioned metal, in each metal sheet 31 all have two between left and right every inner end 311, an interior rank company headquarters 312 away from fluted disc 11, and one define a supporting surface 314 that abuts against short slot 313, forms an interior axis hole 315 that passes for this chain rivet 22 on each inner end 311 respectively.

And this shape that subtracts sheet 32 in the sound is identical with sheet 31 in the metal, but be slightly larger than sheet 31 in this metal, the above-mentioned interior sheet 32 of sound that subtracts can be selected for use: polyurethane (polyurethane gum, be commonly called as excellent power glue), silica gel (silicon gum), butyronitrile rubber (Nitrile gum, butadiene-acrylonitrile copolymer) and cloth matter bakelite or the like, with regard to purpose of the present invention, this subtracts sheet 32 in the sound and can also adopt other material nonmetal and that have a wear-resisting property to make, be not restricted in the enforcement above-mentioned for example.Present embodiment subtract that sheet 32 is polyurethane of selecting for use mechanical strength, oil resistance and wear resistance good in the sound, each subtracts, and sheet 32 all has in the sound: two between left and right every the sound end 321, that subtracts be engaged on this and subtract 321 of sound ends and subtract sound rank company headquarters 322 away from fluted disc 11, and one define a sound that subtracts that subtracts sound arrival slot 323 and support face 324, subtract at each and to form one on the sound end 321 respectively and subtract sound axis hole 325 for what chain rivet 22 passed, wherein this subtracts sound to support face 324 outstanding than the supporting surface 314 of sheet in the metal 31.

The interior sheet the 31, the 32nd of present embodiment again, about the setting of staggering, that is, a wherein end the 311, the 321st of the

interior sheet

31,32 of present embodiment, a pivot are on same chain rivet 22, but there wherein have four

interior sheets

31,32 separately to turn left to be side-prominent, remaining three 31,32 of interior sheets be turn right outstanding.

And chain rivet 22 of the present invention is made by metallic material, its form except can be the disclosed cylinder of embodiment shaft-like, also can be for example hollow type or other any be connected in series this outer chain sheet 21 and in the design of blade unit 3.

Consult Fig. 1,3,4, silencing chain of the present invention is after assembling and when also not leaning with latch 111, and this subtracts the sound that subtracts of sheet 32 in the sound, and to support face 324 outstanding than the supporting surface 314 of sheet in the metal 31, also, outstanding toward the direction of this latch 111.When silencing chain 1 in running and wherein a string order unit 2 is about to down when being located on the latch 111, because all having at least on each serial connection unit 2, a slice subtracts sheet 32 in the sound, and this sound that subtracts that subtracts the interior sheet 32 of sound is given prominence to than the supporting surface 314 of sheet in the metal 31 to face 324, therefore, in the moment that silencing chain 2 snaps in, these latch 111 meeting elder generations and the soft sound that subtracts abut against to face 324, compressing this then subtracts and just can lean against on the supporting surface 314 of sheet 31 in the metal after contracting in sheet 32 distortion in the sound, that is, this latch 111 stretches into overlapping interior sheet 31 after abutting against, 32 abut against short slot 313 and subtract in the sound arrival slot 323 directly abuts against the generation friction noise with metal latch 111 mutually with the interior sheet 31 of avoiding metal.The present invention is not exceeded with the arrangement mode that embodiment subtracts sheet 32 in the sound in the design, promptly as long as latch 111 can be in touching metal before the sheet 31, earlier with subtract sound in sheet 32 contact and cushions the purpose that can reach minimizing transmission noise.

Design of the present invention be except can further reducing the transmission noise and since each sheet have subtract the audio fruit to subtract in the sound in sheet 32 and a slice metal at least sheet 31 overlapping, therefore, design of the present invention can be kept the pulling force of silencing chain expection.According to claimant test, the silencing chain of this preferred embodiment of the present invention can bear the pulling force of 850 ~ 900Kg loading, so the structural strength that needs when design of the present invention still can reach transmission.

By above explanation as can be known, the present invention with sheet in the multi-disc metal 31 and at least a slice subtract the design that sheet 32 in the sound is assembled into blade unit 3 in this, not only do not see existing silencing chain, above-mentioned design can be in the moment that silencing chain and fluted disc 11 fasten, allow by nonmetallic material make subtract in the sound sheet 32 earlier and latch 111 lean, and have the effect of this silencing chain transmission noise of reduction.

Be understandable that; for the person of ordinary skill of the art; can make other various corresponding changes and distortion according to technological scheme of the present invention and technical conceive, and all these changes and distortion all should belong to the protection domain of claim of the present invention.

Claims

1. a silencing chain can be fastened on one and have on the fluted disc of many latches, and is formed by many serial connections unit serial connection, it is characterized in that, each serial connection unit all comprises:

Two outer chain sheets, the internal and external partition setting;

Blade unit in one, between between this outer chain sheet, comprise sheet in the multi-disc metal, and at least a slice nonmetallic material make subtract sheet in the sound, sheet all has the inner end at two intervals in each metal, and one between between this inner end and define a supporting surface that abuts against short slot, the above-mentioned short slot that abuts against is towards this fluted disc, and this subtract sheet in the sound have two at interval subtract the sound end, and one subtract between the sound end and define a sound that subtracts that subtracts the sound arrival slot between this and support face, above-mentionedly subtracts sound to support face outstanding than past this fluted disc of supporting surface; And

Two chain rivets are used to be connected in series the interior blade unit of above-mentioned outer chain sheet, interior blade unit and adjacent string order unit.

2. according to the described silencing chain of claim 1, it is characterized in that this subtracts in the interior sheet of sound and these metals overlapping inside and outside a slice at least in the sheet.

3. according to the described silencing chain of claim 1, it is characterized in that, this subtract sheet in the sound also have one be engaged on this subtract between the sound end and away from this fluted disc subtract sound rank company headquarters, and this subtracts and forms one on the sound end respectively and subtract the sound axis hole for what the chain rivet axle was worn.

4. according to the described silencing chain of claim 1, it is characterized in that sheet comprises that also one is engaged between this inner end and away from the interior rank company headquarters of this latch in this metal, and forms the interior axis hole that a confession chain rivet axle is worn on this inner end respectively.

5. according to the described silencing chain of claim 1, it is characterized in that this material that subtracts sheet in the sound can be selected for use: polyurethane, silica gel, butyronitrile rubber and cloth matter bakelite.

6. according to each described silencing chain in the claim 1 to 5, it is characterized in that, each outer chain sheet all comprise two between left and right every outer end, be engaged between this outer end and the outer rank company headquarters of contiguous fluted disc, and one between between this outer end and away from the notch part of this latch.

7. according to the described silencing chain of claim 1, it is characterized in that, the quantity that subtracts sheet in the sound of blade unit is two in being somebody's turn to do, and the quantity of sheet is five in this metal, wherein in the three-piece metal sheet and a slice to subtract in the sound sheet overlapping inside and outside being, in other two metals sheet then with this subtract in the sound overlapping inside and outside the sheet of another in the sheet, sheet and subtract that one of them in the two end part on the sheet is to be located on same the chain rivet in the sound in these metals.