CN1062195A - Automatic heat-sensitive clutch for car fan - Google Patents
Automatic heat-sensitive clutch for car fan Download PDFInfo
- Publication number
- CN1062195A CN1062195A CN 91105337 CN91105337A CN1062195A CN 1062195 A CN1062195 A CN 1062195A CN 91105337 CN91105337 CN 91105337 CN 91105337 A CN91105337 A CN 91105337A CN 1062195 A CN1062195 A CN 1062195A
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- China
- Prior art keywords
- clutch
- hollow shaft
- spring
- contained
- pull bar
- 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.)
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of automatic heat-sensitive clutch for car fan, the outer rim of its left half-clutch is that taper can match with the inner conical groove of right semi-clutch, clutch is contained on the hollow shaft by bearing, hollow shaft sleeve, the right-hand member of axle is equipped with the heat-sensitive memory alloy spring of 2 different set temperature spotss, this spring is contained in the water pump vane inner chamber, when coolant water temperature surpasses setting temperature, the spring elongation, the elastic force that makes pull bar drive left half-clutch overcome balance spring engages with right semi-clutch, thereby fan rotates, otherwise, throw-out-of clutch, fan just stops.Second temperature sensing spring can work on after first temperature sensing spring loses efficacy, and made the unlikely cause thermal damage of crossing of motor.
Description
The present invention relates to a kind of automatic heat-sensitive clutch for car fan, belong to the automobile cooling system technical field of parts in addition.
Only some time needs fan running to automobile in the process of moving at present, in order to save oil consumption, generally adopt clutch to control the running of fan and stop, domestic existing multinomial patent, for example the automatic clutch of patent such as CN2035019U and 2052050U all adopts spring that marmem makes as thermosensitive element, this spring all has the temperature spots of a setting, when the ambient temperature of spring element meets or exceeds the temperature of this setting, spring is with regard to refresh memory, compress balance spring (or Returnning spring) by mechanism during its elongation and make clutch then, fan is running just, be lower than the setting temperature point in temperature, spring does not extend, do not recover its memory performance, under the effect of balance spring and appropriate authority, clutch is disengaged, thereby fan shuts down, the fatal shortcoming of these clutches is when spring work number of times surpasses the life-span (about 10000 times), the memory performance forfeiture, spring just lost efficacy, and cause automobile to travel under the overtemperature state, and fan shut down, coolant water temperature rises rapidly, the consequence that causes the motor parts to damage finally.
In addition, 89202218.3 the clutch of patent is that memory alloy spring is contained in the water tank back, relying on it to experience the water tank width of cloth penetrates temperature and carries out work, because ambient temperature often is subjected to the influence of extraneous factors such as weather, area, wind band bigger, because temperature sensor is inaccurate, make fan can not adapt to need of work, even can't use.
88205803.4 patent has been done improvement to this, memory alloy spring is contained in the water pump vane, directly contacts with water, and from the hollow shaft of pump, pass the action that a pull bar comes solenoidoperated cluthes, its shortcoming is to adopt the sealing of bellows, and its sealability is unreliable, inconvenient maintenance.
In sum, if singly make a memory alloy spring, its narrow limitation is always arranged as thermosensitive element.
The objective of the invention is to provide a kind of automatic heat-sensitive clutch for car fan, and it can overcome above-mentioned shortcoming.
The object of the present invention is achieved like this, adopt two memory alloy springs as thermosensitive element, the setting temperature point of two springs also is different, two springs all are contained in the inner chamber of water pump vane, the end face of impeller adopts cover plate to compress the O RunddichtringO, and spring does not contact with water, spring just extends when temperature surpasses setting temperature point, recover its memory performance, by being contained in the action of hollow tubular draw-in bar, extruding clutch inner equilibrium spring, the taper outer rim that makes left half-clutch contact with the inner conical groove of right semi-clutch and make fan running.Clutch is contained in above the hollow shaft sleeve by bearing, thereby clutch and disengagement are all very nimble reliable.
The structural drawing of accompanying drawing 1 automatic heat-sensitive clutch for car fan
Now in conjunction with the accompanying drawings the structure of clutch is described in detail.
By Fig. 1, the outer rim of left half-clutch (7) is taper, and it can intermesh with the cone tank on the right semi-clutch (9), and 1 bearing (5) is housed in the endoporus of right semi-clutch (9), refills on hollow shaft sleeve (29); Lining (28) is contained on hollow shaft sleeve (29) middle part, its right-hand member presses the interior ring of bearing (5) and the step of hollow shaft sleeve (29), make bearing (5) unlikely mobile, sliding sleeve (3) inserts in the endoporus of left half-clutch (7), refill on hollow shaft sleeve (29), between the groove of left half-clutch (7) and the lining (28) balance spring (6) is housed, the left side of the right side of hollow shaft sleeve (29) and Vee pulley V (12) and lining (10) link into an integrated entity with screw (11), be fixed on again above the hollow shaft (14), locate with spring collar (30), pump body (13) is with two bearings (24), (25) be contained on the hollow shaft (14), spacer (31) is housed between bearing (24) and (25), bearing (24) outer shroud is fixing with spring clip (32), the outer shroud of bearing (25) is by the step location of the pump housing (13) endoporus, stealing ring locatees with clip (33), water pump vane (16) is contained in the right-hand member of hollow shaft (14), pull bar (15) is contained in the hollow shaft (14), pull bar (15) left end also passes hollow shaft sleeve (29) and stretches out, refill a gland (4), the step of gland (4) partly just in time withstands sliding sleeve (3), the left side is fixing with nut (2), and locate with pin (1), two memory alloy springs (20) are housed on pull bar (15), (21), the pull bar right-hand member has external screw thread, fishplate bar (22) is fixed on the pull bar right-hand member, make memory alloy spring (20), (21) in lobus dexter wheel (16) endoporus, keep the tram, impeller (16) right side is fixed on cover plate (17) on impeller (16) right side with bolt (18), and compress O type seal ring (19), impeller (16) the right pump cover of suit (34), pump cover (34) is to be fixed on above the pump housing (13) with bolt (35), and fan (27) is contained on right semi-clutch (9) right-hand member with bolt (23) and becomes one.
The spring that two memory alloys are made has different setting temperature points, for example the setting temperature of spring (20) is 75-95 ℃, and spring (21) is 95-120 ℃, when first spring (20) reaches lifetime limitation and lost efficacy, because fan shuts down, water temperature just rises rapidly, so second spring just enters work, play a part insurance, automobile normal running is guaranteed, the driver just can organize maintenance immediately according to the temperature sensing spring inefficacy of one as can be known of water-thermometer temperature indicative, changes spring.
Two memory alloy springs all are mounted in the inner chamber of water pump vane, directly do not contact with water in the work, and temperature-sensitive is accurate, and it adopts seal arrangement, favorable sealing property, thereby spring is not fragile, but is easy to change.
When the temperature of engine cooling water was lower than specified value, memory alloy spring was balanced length of spring compressed, the taper outer rim of left half-clutch (7) and the cone tank on the right semi-clutch (9) was disengaged, so fan quits work; When coolant water temperature is specified value, memory alloy spring (20) refresh memory and extending, pull bar (15) is moved right, endoporus step compression balance spring (6) by nut (2) gland (4) and left half-clutch (7), cause left half-sum right semi-clutch (7), (9) to be intermeshed, so fan entry into service work makes internal-combustion engine reach cool effect.
Compared with prior art, clutch of the present invention has following advantages:
1, adopt two memory alloy springs as temperature-sensing element, the design temperature difference of two springs, when first spring failure, second spring can be taken over job, avoided owing to coolant-temperature gage raises engine being damaged, so second spring plays the effect of security insurance.
2, two memory alloy springs place in the water pump vane chamber, and temperature-sensitive is more accurate.
3, adopt cover plate and O RunddichtringO structure, sealing is reliable, and is easy to maintenance.
Claims (3)
1, a kind of automatic heat-sensitive clutch for car fan, the outer rim that it is characterized in that left half-clutch (7) is taper, can be meshed with right semi-clutch (9) left side cone tank, bearing (5) is housed in the endoporus of right semi-clutch (9) to be refilled on hollow shaft sleeve (29), lining (28) is contained in sky and gives on axle sleeve (29) middle part, sliding sleeve (3) inserts in left half-clutch (7) endoporus, refill on hollow shaft sleeve (29), between the groove of left half-clutch (7) and the lining (28) balance spring (6) is housed, hollow shaft sleeve (29) right side and Vee pulley V (12) left side and lining (10) are connected in one with screw (11), be fixed on again above the hollow shaft (14), pump body (13) is with two bearings (24), (25) be contained on the hollow shaft (14), spacer (31) is arranged between the bearing, water pump vane (16) is contained in hollow shaft (14) right-hand member, pull bar (15) is contained in the hollow shaft (14), pull bar (15) left end passes hollow shaft sleeve (29) and stretches out, refill upper press cover (4), the left side is fixing with nut (2), use pin (1) location again, pull bar (16) right-hand member is equipped with 2 memory alloy springs (20), (21) baffle plate (22) is fixed on above the pull bar right-hand member.
2, automatic clutch according to claim 1 is characterized in that impeller (16) right side is fixed on cover plate (17) on the impeller (16) with bolt (18), and compresses O type seal ring (19).
3, clutch according to claim 1 is characterized in that two memory alloy springs have different setting temperature scopes, and the setting range of working memory spring (20) is 75-95 ℃, and the setting range of memory spring (21) is 90-120 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91105337 CN1021121C (en) | 1991-08-05 | 1991-08-05 | Thermal sensitive automatic clutch of automobile fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91105337 CN1021121C (en) | 1991-08-05 | 1991-08-05 | Thermal sensitive automatic clutch of automobile fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1062195A true CN1062195A (en) | 1992-06-24 |
| CN1021121C CN1021121C (en) | 1993-06-09 |
Family
ID=4907088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91105337 Expired - Fee Related CN1021121C (en) | 1991-08-05 | 1991-08-05 | Thermal sensitive automatic clutch of automobile fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1021121C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1107819C (en) * | 1999-07-13 | 2003-05-07 | 王跃 | Automatic clutch |
| CN105545448A (en) * | 2016-02-19 | 2016-05-04 | 太仓钰丰机械工程有限公司 | Ventilating cooling fan clutch |
| CN105545450A (en) * | 2016-02-19 | 2016-05-04 | 太仓钰丰机械工程有限公司 | Fan clutch with cooling and temperature controlling functions |
| CN111720457A (en) * | 2020-06-29 | 2020-09-29 | 肖恩君 | Star-type roller clutch |
| CN112983617A (en) * | 2021-03-03 | 2021-06-18 | 三一重机有限公司 | Mounting structure of engine cooling fan and engine with same |
-
1991
- 1991-08-05 CN CN 91105337 patent/CN1021121C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1107819C (en) * | 1999-07-13 | 2003-05-07 | 王跃 | Automatic clutch |
| CN105545448A (en) * | 2016-02-19 | 2016-05-04 | 太仓钰丰机械工程有限公司 | Ventilating cooling fan clutch |
| CN105545450A (en) * | 2016-02-19 | 2016-05-04 | 太仓钰丰机械工程有限公司 | Fan clutch with cooling and temperature controlling functions |
| CN111720457A (en) * | 2020-06-29 | 2020-09-29 | 肖恩君 | Star-type roller clutch |
| CN112983617A (en) * | 2021-03-03 | 2021-06-18 | 三一重机有限公司 | Mounting structure of engine cooling fan and engine with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1021121C (en) | 1993-06-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |