CN101149097B - Chain tensioner - Google Patents

Chain tensioner Download PDF

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Publication number
CN101149097B
CN101149097B CN2006101567452A CN200610156745A CN101149097B CN 101149097 B CN101149097 B CN 101149097B CN 2006101567452 A CN2006101567452 A CN 2006101567452A CN 200610156745 A CN200610156745 A CN 200610156745A CN 101149097 B CN101149097 B CN 101149097B
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CN
China
Prior art keywords
mentioned
plunger
fastening parts
cylinder portion
internal diameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2006101567452A
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Chinese (zh)
Other versions
CN101149097A (en
Inventor
广濑武彦
滨野斋
吉村年光
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daido Kogyo Co Ltd
Daedong Industrial Co Ltd
Original Assignee
Daido Kogyo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daido Kogyo Co Ltd filed Critical Daido Kogyo Co Ltd
Publication of CN101149097A publication Critical patent/CN101149097A/en
Application granted granted Critical
Publication of CN101149097B publication Critical patent/CN101149097B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/385—Dispositions with two or more expansion means arranged in parallel on a refrigerant line leading to the same evaporator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/39—Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2507—Flow-diverting valves

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air Conditioning Control Device (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

An air conditioner in which heat exchange performance is enhanced by controlling deflection flow of refrigerant among respective paths of a shunt corresponding to a heat exchanger for the air conditioner having a plurality of paths reversely and appropriately. The air conditioner comprises a compressor, a four-way valve, an outdoor heat exchanger, a restrictor, and an indoor heat exchanger having a plurality of paths. Respective members are connected sequentially by refrigerant piping to constitute a refrigerant circuit. Between the indoor heat exchanger equipped with a plurality of paths and the restrictor, a shunt equipped with a plurality of paths is arranged. Each of the plurality of paths of the shunt is provided with a refrigerant flow rate regulation valve. A larger quantity of refrigerant is distributed to a predetermined path where the processing capacity is high under a predetermined operating state and refrigerant temperature becomes high at the outlet of the indoor heat exchanger than to other paths.

Description

Chain tensioning device
Technical field
The technical program relates to the lax chain tensioning device that is used to prevent the transmission chain bar.
Background technique
With the rotation of bent axle in the driving mechanism that camshaft transmits, in the slack-side of chain chain tensioning device is set, be applied to chain by adjusting power with this chain tensioning device, the tension force of guaranteeing chain is constant.
General chain tensioning device is to be assembled into spring and plunger in the cylinder portion that is formed at housing and to constitute, under the lax situation of chain, its effect is to push chain by the plunger that is suppressed by spring, guarantee the tension force of appropriateness, on chain, produce tension force, produced under the situation at the power that is pressed into of plunger, its effect is the oil pressure by the working oil at the back that is filled into plunger, and retreating of plunger cushioned.
But, in this chain tensioning device, because plunger is suppressed by spring, so during the not use when regaining etc., need prevent the outstanding mechanism of plunger.In the past, inhibition mechanism as the plunger of general use, have following mechanism etc., that is, on plunger and housing, card complex hole is set, pin and each card complex hole are provided with communicatively, prevent the outstanding mechanism of plunger and the fastening groove is set on plunger, by fixing on the fastening groove by the outstanding integrated circuit board that prevents that spring pin is installed, prevent outstanding (for example, with reference to the patent documentations 1) such as mechanisms of plunger.
[patent documentation 1] spy opens the 2005-344872 communique
But the outstanding mechanism that prevents plunger in the past exists number of spare parts many, and the space that need carry out the processing of hole and groove etc. on plunger, the problem that has hindered the compactness of chain tensioning device.In addition, with regard to the mechanism that uses above-mentioned pin, for example, when safeguarding, under the situation about stretcher need be pulled down in the motor, in order to prevent the outstanding of plunger, pin need be set once more, hardly the operability excellence.
The technical program is exactly to form in view of relevant truth, and it is compact and simple structure that purpose is to provide a kind of, the chain tensioning device that prevents the mechanism that plunger is outstanding with operability excellence.
Summary of the invention
The chain tensioning device of the technical program has housing, plunger and spring, and this housing has the cylinder at end portion is arranged; This plunger can be assembled into above-mentioned cylinder portion with being free to slide; This spring makes it apply elastic force pressure from the outstanding direction of above-mentioned cylinder portion to above-mentioned plunger, it is characterized in that, have the fastening parts, these fastening parts are arranged on the opening side of above-mentioned cylinder portion rotationally, and has an identical plunger inserting hole of internal diameter of internal diameter and above-mentioned cylinder portion, above-mentioned plunger inserting hole is the center with the position from the center of rotation off-centre of above-mentioned fastening parts, when with above-mentioned fastening parts rotating operation to the regulation the position time, the internal diameter center of above-mentioned cylinder portion and the internal diameter centres of above-mentioned plunger inserting hole allow the outstanding of above-mentioned plunger.
The invention effect
According to the technical program, can pass through the only such shirtsleeve operation of rotating operation fastening parts, or limit the outstanding of plunger, or allow the outstanding of plunger, operability excellence.In addition, fill in the special processing of row, just can prevent the outstanding of plunger, so the stroke that can make plunger can be sought compactness for necessary MIN length because there is no need coupled columns.
Description of drawings
Fig. 1 is the figure of chain tensioning device of the mode of execution of the relevant the technical program of expression.
Fig. 2 is the figure of fastening parts of chain tensioning device of the mode of execution of the relevant the technical program of expression.
Fig. 3 is the figure of housing of chain tensioning device of the mode of execution of the relevant the technical program of expression.
Fig. 4 is used for the figure that the operation with regard to the fastening parts of the chain tensioning device of the mode of execution of relevant the technical program describes.
Fig. 5 is in the chain tensioning device of the mode of execution of relevant the technical program, the figure that is used for just preventing and allows the outstanding state of plunger to describe.
Fig. 6 is in the chain tensioning device of the mode of execution of relevant the technical program, is used to illustrate the figure of the outstanding state that limits plunger.
Fig. 7 is in the chain tensioning device of the mode of execution of relevant the technical program, is used to illustrate the figure of the outstanding state that allows plunger.
Fig. 8 is in the chain tensioning device of the mode of execution of relevant the technical program, is used for the figure that just prevents that coming off of plunger from describing.
Fig. 9 is the figure of variation of the chain tensioning device of expression the technical program.
Symbol description
1 chain tensioning device
10 housings
11 cylinder portions
12 return springs
13 plungers
17 fastening parts
23 engagement portions
25 set wall
26 C shapes ring
27 circumferential grooves
The 27a conical surface
The 27b snap-latch surface
30 engagement portions
31 fastening parts
Embodiment
Below, with reference to the accompanying drawings, the mode of execution of the technical program is described.Fig. 1 represents the chain tensioning device 1 of relevant present embodiment, and Fig. 1 (a) is a plan view, and Fig. 1 (b) is a sectional view, Fig. 1 (c) be from arrow C see to view.
As shown in the figure, on the housing 10 that forms by aluminum casting etc., run through the cylinder portion 11 that is provided with.Return spring 12 and plunger 13 are assembled into this cylinder portion 11.In addition, the internal diameter of the maximum outside diameter of plunger 13 and cylinder portion 11 is roughly the same, and plunger 13 can be assembled into cylinder portion 11 with being free to slide.
In addition, in housing 10, form the hydraulic chamber 14 that is communicated with cylinder portion 13, keep the working oil that flows into from one-way valve 16 described later in this hydraulic chamber 14.
Have again, on housing 10, form mounting hole 15a and 15b, when being installed to chain tensioning device 1 in the motor, use.
One-way valve 16 is made of valve seat 16a, ball 16b and block 16c, and this valve seat 16a has the hydraulic fluid port with external communications from hydraulic chamber 14; This ball 16b is configured on the valve seat 16a; This block 16c restriction ball 16b's is outstanding.The working oil that these one-way valve 16 controls flow into to hydraulic chamber 14, extend at chain, under the situation that plunger 13 is given prominence to, ball 16b leaves from valve seat 16a, working oil is flowed into, be subjected in the direction that plunger 13 is pushed under the situation of power, ball 16b closes the hydraulic fluid port of valve seat 16a, the adverse current that stops the working oil in the hydraulic chamber 14 keeps working oil.
The opening side of the cylinder portion 11 in housing 10, that is, the direction side that plunger 13 is given prominence to is engaging fastening parts 17 rotationally.By these fastening parts 17 of rotating operation, can or prevent the outstanding of plunger 13, or allow the outstanding of plunger 13.Below, simultaneously with reference to Fig. 2 and Fig. 3, one side being described in detail with regard to fastening parts 17.
Fig. 2 represents fastening parts 17, and Fig. 2 (a) is a plan view, Fig. 2 (b) be Fig. 2 (a) from arrow A see to view, Fig. 2 (c) be Fig. 2 (a) from arrow B see to view.
As shown in Figure 2, fastening parts 17 are formed the hollow cylindrical that has flange, have from the outstanding bar 19 of a part of the periphery of lip part 18.Be formed on the fastening parts 17 plunger inserting hole 20 with from the center (that is, the center of rotation of fastening parts 17) of fastening parts 17 only the position of eccentric gauge set a distance L1 be the center, its internal diameter is set to the internal diameter of cylinder portion 11 roughly the same.
In addition, on the outer circumferential face of the cylindrical part 21 of the single order that begins from lip part 18 to descend, the claw 22 of two outstanding laterally arcuations is set.Though in the present embodiment, claw 22 is separately positioned on the 180 degree phase bit positions that stagger in the outer circumferential face of cylindrical part 21, is not to be defined to such configuration.
Then, Fig. 3 represents housing 10, is return spring 12, plunger 13 and fastening parts not to be gone into to the plan view of the state of cylinder portion 11 for 17 groups.In addition, for convenience, Fig. 3 uses the state after beginning dextrorotation and turn 90 degrees from the state shown in Fig. 1 (c) to represent.
As shown in Figure 3, the opening side of the cylinder portion 11 in housing 10, that is, the direction side that plunger 13 is given prominence to is being provided with the engagement portion 23 (also with reference to Fig. 1) that is used to engage fastening parts 17.More particularly, engagement portion 23 is run through and is arranged to the circular depressions shape that is communicated with cylinder portion 11 by the bottom.In this case, the engagement portion 23 of circular depressions shape be not be formed with cylinder portion 11 on coaxial, but be formed with from the internal diameter center of cylinder portion 11 only the position of eccentric gauge set a distance L1 be the center.
On the inner peripheral surface of engagement portion 23, near the roughly neutral position of its depth direction, a pair of guide portion 24 of outstanding arcuation to the inside is set.Between these a pair of guide portion 24, on the inner peripheral surface of engagement portion 23, form the space on the 180 degree phase bit positions that stagger, the arc length in each space is configured to longer than the arc length of the claw 22 of fastening parts 17.
In addition, the internal diameter of engagement portion 23 is configured to bigger than the claw 22 mutual external diameters that form of fastening parts 17, and the internal diameters that guide portion 24 forms mutually are configured to littler than the external diameters of claw 22 mutual formation.
In addition, the mark 10a shown in the figure is the mark that expression allows the outstanding position of plunger 13, is described in detail later, and bar 19 and mark 10a contraposition by fastening parts 17 allow the outstanding of plunger 13.
Below, with reference to Fig. 4, illustrate fastening parts 17 are engaged to engagement portion 23, or prevent the outstanding of plunger 13, or allow the outstanding appearance of plunger 13.In addition, in the fastening parts 17 shown in Fig. 4 (a)-(c) difference, express for convenient, and claw 22 is exposed.
The initial step that fastening parts 17 are engaged with engagement portion 23 is gone into return spring 12 and plunger after cylinder portion 11 in Fig. 4 (a) expression for 13 groups.That is, the claw 22 of expression fastening parts 17 enters the state that is formed at the space between the guide portion 24.Under this state, the bottom surface of fastening parts 17 is positioned at the inboard of comparing with the guide portion 24 of engagement portion 23.In addition, in the drawings, black arrow is represented the position of claw 22, and white arrow represents to be formed on the space between the guide portion 24.In addition, under this state, the internal diameter center of the internal diameter center of cylinder portion 11 and the plunger inserting hole 20 of fastening parts 17 is not with one heart, and interfere the bottom surface of the position of the maximum outside diameter of plunger 13 and fastening parts 17, prevents the outstanding of plunger 13.
Fig. 4 (b) expression make fastening parts 17 from the state of Fig. 4 (a) to the appearance of counterclockwise rotating.Specifically make it to rotate 45 degree, under this state, the claw 22 of fastening parts 17 is positioned at the back side of guide portion 24, can not extract fastening parts 17.In addition, under this state, the internal diameter centres of the internal diameter center of cylinder portion 11 and the plunger inserting hole 20 of fastening parts 17, does not interfere with the bottom surface of fastening parts 17 at the position of the maximum outside diameter of plunger 13, allows the outstanding of plunger 13.At this moment, bar 19 overlaps with above-mentioned mark 10a.Like this, by discerning the outstanding position that allows plunger 13 in advance easily, improve usability.
Fig. 4 (c) expression make fastening parts 17 from the state of Fig. 4 (b) to the appearance of counterclockwise further rotating.Specifically making it to rotate 45 degree, even under this state, also is the back side that the claw 22 of fastening parts 17 is positioned at guide portion 24 again, can not extract fastening parts 17.In addition, under this state, the internal diameter center of the internal diameter center of cylinder portion 11 and the plunger inserting hole 20 of fastening parts 17 is not with one heart, and interfere the bottom surface of the position of the maximum outside diameter of plunger 13 and fastening parts 17, prevents the outstanding of plunger 13.
Here, with reference to Fig. 5, describe with regard to the relation of the plunger inserting hole 20 of cylinder portion 11 and fastening parts 17.State shown in Fig. 5 (a) is the figure of relation of the plunger inserting hole 20 of expression cylinder portion 11 corresponding with Fig. 4 (a) and fastening parts 17.The bottom surface of the region representation fastening parts 17 shown in the oblique line of this figure covers the zone of cylinder portion 11.That is, be the internal diameter center and the nonconcentric(al) state of the plunger inserting hole 20 of the internal diameter center of cylinder portion 11 and fastening parts 17, the bottom surface interference of the position of the maximum outside diameter of plunger 13 and fastening parts 17 prevents the outstanding of plunger 13.
State shown in Fig. 5 (b) is the figure of relation of the plunger inserting hole 20 of expression cylinder portion 11 corresponding with Fig. 4 (b) and fastening parts 17.Among this figure, be that the internal diameter center of the plunger inserting hole 20 of the internal diameter center of cylinder portion 11 and fastening parts 17 becomes concentric state, does not interfere with the bottom surface of fastening parts 17 at the position of the maximum outside diameter of plunger 13, allows the outstanding of plunger 13.
State shown in Fig. 5 (c) is the figure of relation of the plunger inserting hole 20 of expression cylinder portion 11 corresponding with Fig. 4 (c) and fastening parts 17.The bottom surface of the region representation fastening parts 17 shown in the oblique line of this figure covers the zone of cylinder portion 11.That is, be the internal diameter center and the nonconcentric(al) state of the plunger inserting hole 20 of the internal diameter center of cylinder portion 11 and fastening parts 17, the bottom surface interference of the position of the maximum outside diameter of plunger 13 and fastening parts 17 prevents the outstanding of plunger 13.
Here, with reference to Fig. 6, the position of the maximum outside diameter of illustrated plunger 13 so far just, that is, the position that interfere bottom surfaces plunger 13 and fastening parts 17 describes.As shown in Figure 6, form on the outer circumferential face of plunger 14 and set wall 25, this setting wall 25 has the external diameter roughly the same with the internal diameter of cylinder portion 11.This setting wall 25 is positions that the C shape ring 26 that is used for the outer circumferential face of the fastening plunger 13 of elasticity carries out initial setting, in addition, is the position of interfering with the bottom surface of fastening parts 17.C shape ring 26 is elastic rings of part of opening, can hole enlargement, undergauge.
State shown in this figure is the bottom surface and setting wall 25 butts of fastening parts 17, promptly interferes, and has prevented the outstanding state (corresponding with Fig. 4 (a) or Fig. 4 (c)) of plunger 13.
The rear of comparing with setting wall 25 in the outer circumferential face of plunger 13 equally spaced forms a plurality of circumferential grooves 27.Each circumferential groove 27 has the conical surface 27a of rear side and the snap-latch surface 27b of front side.In addition, the just in time relative prevent surface 28 of the inner peripheral surface in cylinder portion 11, angulation with the snap-latch surface 27b of circumferential groove 27.Allowing plunger 13 under the state that projected direction moves,, moving to 13 stages of plunger by being installed in C shape ring 26 the conical surface 27a hole enlargements on the plunger 13 along circumferential groove 27.In addition, draw back direction when moving,, stop the backward movement of plunger 13, retreat amount of movement and be restricted by prevent surface 28 and snap-latch surface 27b clamping C shape ring 26 at plunger 13.
Fig. 7 (a)-(c) is the figure of the appearance of representing that interimly plunger 13 moves to projected direction.Fig. 7 (a) expression rotating operation fastening parts 17, the state (corresponding) that moves of permission plunger 13 with Fig. 4 (b).In this state,,, be set at the bottom surface butt of the C shape ring 26 set on the wall 25 and fastening parts 17 so plunger 13 is outstanding because the bottom surface of fastening parts 17 and the butt state of setting wall 25 are disengaged.Like this because C shape ring 26 by with fastening parts 17 butts, one side is along the conical surface 27a hole enlargement of circumferential groove 27, one side moves plunger 13, so can suddenly not give prominence to, but moves (with reference to Fig. 7 (b), Fig. 7 (c)) interimly.
Fig. 7 (d) expression prevents the appearance that comes off of plunger 13.On the outer circumferential face of plunger 13, the rear of Fang circumferential groove 27 in the end forms and stops groove 29.Become wall at the formed side 29a of the rear side that stops groove 29 with respect to the axial approximate vertical of plunger 13.Therefore, arrive under the situation of side 29a at C shape ring 26, by the bottom surface clamping C shape ring 26 of side 29a and fastening parts 17, plunger 13 be fixed (with reference to Fig. 8).
In the chain tensioning device 1 of the present embodiment of relevant above explanation, for example become the state that plunger 13 is pushed when regaining etc., can pass through only rotating operation fastening parts 17 such shirtsleeve operations, prevent the outstanding of plunger 13.And, can pass through only rotating operation fastening parts 17 such shirtsleeve operations, allow the outstanding of plunger 13, the operability excellence.
The stroke that can make plunger 13 in addition,, just can prevent the outstanding of plunger 13, so can be sought compactness for necessary MIN length because there is no need plunger 13 is processed especially.
In addition, resemble present embodiment like this, form a plurality of circumferential grooves 27 on plunger 13, by C shape ring 26, the amount of movement when restriction plunger 13 retreats in such structure, can utilize fastening parts 17, makes C shape encircle 26 hole enlargements, can reduce the part kind.
In addition, the technical program is not limited only to this mode of execution, in the scope of the technical program, can change etc.For example, though in the present embodiment, the outer circumferential face that is constituted as at plunger 13 forms a plurality of circumferential grooves 27, by with the cooperating of C shape ring 26, the amount of returning of restriction plunger 13 is not limited only to this.For example, also can constitute by the ratchet mode, the amount of returning of restriction plunger 13, the structure that does not have the amount of returning that limits plunger 13 is also passable.
In addition, though in the present embodiment, fastening parts 17 are housed in the inside of housing 10, have further sought compactness, are not limited only to this.For example, also can be as shown in Figure 9, be constituted as engagement portion 30 is formed highlightedly from housing 10, make fastening parts 31 be the cap shape, be exposed to the outside.In this case, because the position relations at the center of the center of rotation of the center of cylinder portion 11, fastening parts 31 and the plunger inserting hole that fastening parts 31 had etc. are also basic identical with above-mentioned mode of execution, so can implement rightly.

Claims (4)

1. chain tensioning device, this chain tensioning device has housing, plunger and spring, and this housing has the cylinder at end portion is arranged; This plunger can be assembled into above-mentioned cylinder portion with being free to slide; This spring, is characterized in that making it apply elastic force pressure from the outstanding direction of above-mentioned cylinder portion to above-mentioned plunger,
Have the fastening parts, these fastening parts are arranged on the opening side of above-mentioned cylinder portion rotationally, and have the identical plunger inserting hole of internal diameter of internal diameter and above-mentioned cylinder portion,
Above-mentioned plunger inserting hole is the center with the position from the center of rotation off-centre of above-mentioned fastening parts, when with above-mentioned fastening parts rotating operation to the regulation the position time, the internal diameter center of above-mentioned cylinder portion and the internal diameter centres of above-mentioned plunger inserting hole allow the outstanding of above-mentioned plunger.
2. chain tensioning device as claimed in claim 1, it is characterized in that, on above-mentioned housing, the engagement portion of the circular depressions shape that formation is communicated with above-mentioned cylinder portion by the bottom, the above-mentioned fastening parts of hollow cylindrical insert rotationally and are arranged on above-mentioned engagement portion, and above-mentioned engagement portion is the center with the position from the internal diameter center off-centre of above-mentioned cylinder portion.
3. chain tensioning device as claimed in claim 1 or 2 is characterized in that, on above-mentioned housing mark is set, and this mark represents that the internal diameter center of above-mentioned cylinder portion and the internal diameter center of above-mentioned plunger inserting hole become concentric position.
4. chain tensioning device as claimed in claim 1 or 2 is characterized in that, has circumferential groove, elastic ring, prevent surface,
This circumferential groove is formed with many on the outer circumferential face of above-mentioned plunger, have the snap-latch surface of front side and the conical surface of rear side respectively;
This elastic ring is assembled in the above-mentioned circumferential groove one;
Above-mentioned prevent surface is formed on the inner peripheral surface of above-mentioned cylinder portion,
When above-mentioned plunger is outstanding, above-mentioned elastic ring and above-mentioned fastening parts butt, along the conical surface hole enlargement in the above-mentioned circumferential groove, when above-mentioned plunger retreated, above-mentioned ring was stoped the return motion of above-mentioned plunger by snap-latch surface in the above-mentioned circumferential groove and above-mentioned prevent surface clamping.
CN2006101567452A 2006-01-16 2006-12-28 Chain tensioner Expired - Fee Related CN101149097B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2006007578A JP4120680B2 (en) 2006-01-16 2006-01-16 Air conditioner
JP2006-007578 2006-01-16
JP2006007578 2006-09-19

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Publication Number Publication Date
CN101149097A CN101149097A (en) 2008-03-26
CN101149097B true CN101149097B (en) 2011-11-16

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Application Number Title Priority Date Filing Date
CN2006101567452A Expired - Fee Related CN101149097B (en) 2006-01-16 2006-12-28 Chain tensioner
CN2007800017227A Expired - Fee Related CN101360961B (en) 2006-01-16 2007-01-16 Air conditioner

Family Applications After (1)

Application Number Title Priority Date Filing Date
CN2007800017227A Expired - Fee Related CN101360961B (en) 2006-01-16 2007-01-16 Air conditioner

Country Status (7)

Country Link
US (1) US20090025420A1 (en)
EP (1) EP1975525A4 (en)
JP (1) JP4120680B2 (en)
KR (1) KR100973916B1 (en)
CN (2) CN101149097B (en)
AU (1) AU2007205443B2 (en)
WO (1) WO2007081021A1 (en)

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