CN109869470A - Metrograph worm gear axle assembly - Google Patents
Metrograph worm gear axle assembly Download PDFInfo
- Publication number
- CN109869470A CN109869470A CN201910252321.3A CN201910252321A CN109869470A CN 109869470 A CN109869470 A CN 109869470A CN 201910252321 A CN201910252321 A CN 201910252321A CN 109869470 A CN109869470 A CN 109869470A
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- worm gear
- shaft
- axle sleeve
- gear axle
- gear shaft
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Abstract
The present invention relates to a kind of metrograph worm gear axle assemblies, including worm gear shaft, worm gear axle sleeve, the worm gear axle sleeve is using nylon material production molding, the axle center of the worm gear axle sleeve is equipped with a stepped hole, oil sealing is equipped in the large diameter hole of the stepped hole, the shaft lower end of the worm gear shaft is fixed with worm gear, the shaft middle section of worm gear shaft is equipped with helicla flute section, the rotation direction of the helicla flute section rotates forward contrary with worm gear shaft, the middle part of the helicla flute section is equipped with a limited ring groove, in the stepped hole of shaft a part insertion worm gear axle sleeve of the worm gear shaft, the diameter holes of stepped hole are slidably matched with shaft, the upper end of shaft is located in stepped hole large diameter hole and cooperatively forms sealing with oil sealing, the helicla flute section of the worm gear shaft shaft, a part is located in the diameter holes of stepped hole, another part extends outside worm gear axle sleeve, the worm gear axle sleeve It is equipped with the dowel hole that the axial limiting to form worm gear shaft is inserted into for positioning pin, dowel hole is corresponding with the limited ring groove of worm gear shaft.
Description
Technical field
The present invention relates to metrograph field, in particular to a kind of metrograph worm gear axle assembly.
Background technique
Metrograph is the device for being used to measure vehicle wheel rotational speed in automobile, and the worm gear shaft for being used to measure is typically mounted on
On drive axle or speed changer, setting sealing structure is usually required for the metrograph worm gear shaft being mounted on speed changer, with
Prevent the oil leak of speed changer.Currently, the sealing of metrograph worm gear shaft is usually to be arranged between worm gear shaft and worm gear axle sleeve
Oil sealing, oil sealing it is cheap, light-weight, service life is also grown.But oil sealing can be influenced by quality and assembly technology, in length
Sometimes it still will appear the case where oil leak in the use process of phase, between worm gear shaft and worm gear axle sleeve, so that inside case of transmission
Lubricating oil reduce, result in the abrasion of gear, if it find that oil leak is too late, also needs the replacement for carrying out gear, increase maintenance
Cost.Moreover, the worm gear axle sleeve of metrograph is made by metal at present, quality is larger, is unfavorable for the light of automobile
Quantization requires.
Summary of the invention
In view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of metrograph worm gear axle assembly, settings
Oil sealing and the helicla flute section of worm gear shaft together form the sealing between worm gear shaft and axle sleeve, ensure that worm gear shaft and worm gear shaft
Good leakproofness between set, it is therefore prevented that oil leak.
The technical scheme is that a kind of metrograph worm gear axle assembly, including worm gear shaft, worm gear axle sleeve, it is described
Worm gear axle sleeve is equipped with a stepped hole, the major diameter of the stepped hole using nylon material production molding, the axle center of the worm gear axle sleeve
Oil sealing is equipped in hole, the shaft lower end of the worm gear shaft is fixed with worm gear, and the shaft middle section of worm gear shaft is equipped with helicla flute section, institute
It states the rotation direction of helicla flute section and worm gear shaft rotates forward contrary, the middle part of the helicla flute section is equipped with a limited ring groove, described
In the stepped hole of shaft a part insertion worm gear axle sleeve of worm gear shaft, diameter holes and the shaft of stepped hole are slidably matched, shaft
Upper end is located in stepped hole large diameter hole and cooperatively forms sealing, the helicla flute section of the worm gear shaft shaft, a part of position with oil sealing
In the diameter holes of stepped hole, another part extends outside worm gear axle sleeve, and the worm gear shaft, which puts on to be equipped with, is inserted into shape for positioning pin
At the dowel hole of the axial limiting of worm gear shaft, the dowel hole is corresponding with the limited ring groove of worm gear shaft.
The worm gear axle sleeve uses nylon material injection molding.
Worm gear shaft set upper side outer circle is equipped with the screw thread for installing sensor.
It is in that setting is mutually cut with worm gear shaft that the worm gear shaft, which covers upper dowel hole,.
Worm gear axle sleeve periphery is equipped with an installation annular groove, is equipped with sealing ring in the installation annular groove.
The worm gear is fixed by injection injection molding with worm gear shaft using nylon material.
The oil sealing passes through the hole shoulder axially position of worm gear axle sleeve stepped hole.
The positioning pin is volume pin.
By adopting the above technical scheme: including worm gear shaft, worm gear axle sleeve, the worm gear axle sleeve is fabricated to using nylon material
Type, the axle center of the worm gear axle sleeve are equipped with a stepped hole, are equipped with oil sealing, the axis of the worm gear shaft in the large diameter hole of the stepped hole
Bar lower end is fixed with worm gear, and the shaft middle section of worm gear shaft is equipped with helicla flute section, and the rotation direction and worm gear shaft of the helicla flute section are just
What is turned is contrary, and the middle part of the helicla flute section is equipped with a limited ring groove, and shaft a part of the worm gear shaft is inserted into worm gear
In the stepped hole of axle sleeve, diameter holes and the shaft of stepped hole are slidably matched, the upper end of shaft be located in stepped hole large diameter hole and with
Oil sealing cooperatively forms sealing, the helicla flute section of the worm gear shaft shaft, and a part is located in the diameter holes of stepped hole, another part
Extend outside worm gear axle sleeve, the worm gear shaft puts on the positioning pin for being equipped with and being inserted into the axial limiting to form worm gear shaft for positioning pin
Hole, the dowel hole are corresponding with the limited ring groove of worm gear shaft.The worm gear axle sleeve quality of nylon material is small, can meet the light of automobile
Quantization requires, and nylon material also can guarantee high mechanical strength, with heat-resisting, wear-resistant, oil resistant, Highly-absorbing it is excellent
Point, the stability of worm gear axle sleeve, the production of worm gear axle sleeve is also simple, passes through injection molding.In this worm gear axle assembly
The oil sealing of setting and the helicla flute section of worm gear shaft together form the sealing between worm gear shaft and axle sleeve.When worm gear shaft rotates forward,
The helicla flute section opposite with worm gear shaft forward rotation direction can be squeezed a large amount of oil liquid flowing in worm gear axle sleeve stepped hole by helicla flute
It returns in the housing chamber of speed changer, and extends the helicla flute outside worm gear axle sleeve, can will also be located at worm gear axle sleeve stepped hole mouth
Oil liquid is thrown away outward, oil liquid can be avoided to a certain extent to enter in the stepped hole of worm gear axle sleeve.Meanwhile it flowing to worm gear shaft on a small quantity
Shaft upper end the oil sealing barrier that can also be set of oil liquid, oil circuit is thoroughly separated, ensure that worm gear shaft and worm gear axle sleeve it
Between good leakproofness, it is therefore prevented that oil leak, the appearance of gear wear situation caused by avoiding because of oil leak, reduce maintenance at
This, optimizes the working environment of oil sealing.Moreover, worm gear shaft and worm gear axle sleeve are the axial limiting formed by positioning pin, the snail
The assembly of axle aggregate is also simple.
The worm gear axle sleeve uses nylon material injection molding, and sprayup process is simple, and the production of worm gear axle sleeve is simpler
Just.
Worm gear shaft set upper side outer circle is equipped with the screw thread for installing sensor, and worm gear shaft puts on the sensor meeting of installation
The tach signal for acquiring the shaft upper end of worm gear shaft, provides the initial data of speed, the installation of sensor for metrograph
Simply.
The worm gear shaft covers upper dowel hole in setting is mutually cut with worm gear shaft, can guarantee positioning pin to worm gear after mutually cutting
The effective position of axis.
Worm gear axle sleeve periphery is equipped with an installation annular groove, is equipped with sealing ring in the installation annular groove.The sealing of installation
Circle is mainly used for preventing the oil leak between worm gear axle sleeve and case of transmission, increases the sealing performance of speed changer.
The worm gear is fixed by spraying injection molding with worm gear shaft using nylon material, when molding, is first consolidated worm gear shaft
It is scheduled in the mold for forming worm gear, then by nylon material injection molding worm gear, is formed simultaneously between worm gear and worm gear shaft
Be fixedly connected, the stable connection is effective.Moreover, the worm gear quality of nylon material is small, it is more favorable to the lightweight of automobile.
The oil sealing passes through the hole shoulder axially position of worm gear axle sleeve stepped hole, and the positioning of oil sealing is simple.
The positioning pin is volume pin, because volume pin has certain elasticity, when installation, can first exert a force reduce the diameter of positioning pin after
It is inserted into dowel hole and limited ring groove, unclamps again the automatic enlarged diameter of opening of volume pin and form fixation, not only the peace of positioning pin
Dress is convenient, and the fixation in hole might as well.
The helicla flute section of the oil sealing and worm gear shaft that are arranged in this metrograph worm gear axle assembly together forms worm gear shaft
Sealing between axle sleeve ensure that good leakproofness between worm gear shaft and worm gear axle sleeve, it is therefore prevented that oil leak.Moreover, spiral
The machining spiral groove of slot section is also simple, and the stability of worm gear axle sleeve is good, and the worm gear axle sleeve and worm gear of nylon material are by being injected into
Type, production is simple, light-weight, meets the lightweight requirements of automobile.
The invention will be further described with specific embodiment with reference to the accompanying drawings of the specification.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of worm gear shaft；
Fig. 3 is the structural schematic diagram of worm gear axle sleeve；
Fig. 4 is the schematic diagram of worm gear axle sleeve and detent fit；
Fig. 5 is the schematic diagram of the present invention with case of transmission cooperation.
In attached drawing, 1 is worm gear shaft, and 1-1 is helicla flute section, and 1-2 is limited ring groove, and 2 be worm gear, and 3 be worm gear axle sleeve, 3-1
For stepped hole, 3-2 is dowel hole, and 3-3 is installation annular groove, and 3-4 is screw thread, and 4 be oil sealing, and 5 be positioning pin, and 6 be sealing ring.
Specific embodiment
Referring to Fig. 1 to Fig. 5, a kind of metrograph worm gear axle assembly, including worm gear shaft 1, worm gear axle sleeve 3, the worm gear
Axis 1 is made by metal, and the worm gear shaft 1 of metal can guarantee the rigidity of axis.The worm gear axle sleeve 3 is using nylon material injection system
Form, sprayup process is simple, worm gear axle sleeve 3 it is simple for production.And the quality of nylon material is small, also can guarantee high machine
Tool intensity has the advantages that heat-resisting, wear-resistant, oil resistant, Highly-absorbing, and the stability of worm gear axle sleeve 3 might as well.The worm gear axle sleeve
3 axle center is equipped with a stepped hole 3-1, and oil sealing 4 is equipped in the large diameter hole of the stepped hole 3-1, and the oil sealing 4 passes through worm gear axle sleeve
The hole shoulder axially position of 3 stepped hole 3-1, the positioning of oil sealing 4 are simple.The shaft lower end of the worm gear shaft 1 is fixed with worm gear 2,
The worm gear 2 is fixed by injection injection molding and worm gear shaft 1 using nylon material, and when molding, worm gear shaft 1 is first fixed on use
In in the mold of molding worm gear 2, then by nylon material injection molding worm gear 2, it is formed simultaneously between worm gear 2 and worm gear shaft 1
It is fixedly connected, the stable connection is effective, and the quality of the worm gear 2 of nylon material is also small.The shaft middle section of worm gear shaft 1 is equipped with spiral
Rotation direction and the worm gear shaft 1 of slot section 1-1, the helicla flute section 1-1 rotate forward contrary, set in the middle part of the helicla flute section 1-1
There is a limited ring groove 1-2.In the stepped hole 3-1 of shaft a part insertion worm gear axle sleeve 3 of the worm gear shaft 1, stepped hole 3-1's
Diameter holes are slidably matched with shaft, and the upper end of shaft is located in stepped hole 3-1 large diameter hole and cooperatively forms sealing with oil sealing 4.Institute
The helicla flute section 1-1 of 1 shaft of worm gear shaft is stated, for a part in the diameter holes of stepped hole 3-1, another part extends worm gear shaft
Outside set 3.The worm gear axle sleeve 3 is equipped with the dowel hole 3-2 for being inserted into for positioning pin 5 and forming the axial limiting of worm gear shaft 1, described
Dowel hole 3-2 is corresponding with the limited ring groove 1-2 of worm gear shaft 1, and limited ring groove 1-2 can be formed together axis positioning with positioning pin 5,
Also it can guarantee rotating in a circumferential direction for worm gear shaft 1.Dowel hole 3-2 on the worm gear axle sleeve 3 is in cut setting, phase with 1 phase of worm gear shaft
Positioning pin 5 can be guaranteed to the effective position of worm gear shaft 1 after cutting, it is preferable that the axis of limited ring groove 1-2 shaft section circular arc and fixed
The axis of position pin hole 3-2 coincides, and the shaft section semicircular in shape of limited ring groove 1-2.The positioning pin 5 is volume pin, because volume is sold
With certain elasticity, when installation, can first exert a force and be inserted into dowel hole 3-2 and limited ring groove 1-2 after the diameter for reducing positioning pin 5
It unclamps again, the automatic enlarged diameter of opening of volume pin forms fixation, and not only positioning pin 5 is easy for installation, and the fixation in hole might as well.
The 3 upper end outer circle of worm gear axle sleeve is equipped with the screw thread 3-4 for installing sensor, and the sensor installed on worm gear axle sleeve 3 can be adopted
The tach signal for collecting the shaft upper end of worm gear shaft 1, provides the initial data of speed for metrograph, the installation of sensor is also simple
It is single.3 periphery of worm gear axle sleeve is equipped with an installation annular groove 3-3, is equipped with sealing ring 6 in the installation annular groove 3-3, installation it is close
Seal 6 is mainly used for preventing the oil leak between worm gear axle sleeve 3 and case of transmission, increases the sealing performance of speed changer.
The helicla flute section 1-1 of the oil sealing 4 and worm gear shaft 1 that are arranged in this turbine axle assembly together forms worm gear shaft 1 and snail
Sealing between axle sleeve 3.When worm gear shaft 1 rotates forward, the helicla flute section 1-1 opposite with 1 forward rotation direction of worm gear shaft can pass through spiral shell
Spin slot squeezes back a large amount of oil liquid flowing in 3 stepped hole 3-1 of worm gear axle sleeve in the housing chamber of speed changer, and extends worm gear axle sleeve
The oil liquid being located at 3-1 mouthfuls of 3 stepped hole of worm gear axle sleeve can also be thrown away outward, can be avoided to a certain extent by the helicla flute outside 3
Oil liquid enters in the stepped hole 3-1 of worm gear axle sleeve 3.Meanwhile the oil liquid for flowing to the shaft upper end of worm gear shaft 1 on a small quantity can also be set
Oil sealing 4 obstruct, oil circuit is thoroughly separated, ensure that good leakproofness between worm gear shaft 1 and worm gear axle sleeve 3, it is therefore prevented that leakage
Oil, the appearance of gear wear situation, reduces maintenance cost caused by avoiding because of oil leak, optimizes the working environment of oil sealing,
It is more advantageous to the holding of 4 validity of oil sealing.Moreover, worm gear shaft 1 and worm gear axle sleeve 3 are the axial limitings formed by positioning pin 5,
The assembly of the worm gear axle assembly is also simple.Meanwhile worm gear axle sleeve 3 is sprayed with worm gear 2 by nylon material, not only production letter
Single, quality is also light, meets the lightweight requirements of automobile.
Claims (8)
1. a kind of metrograph worm gear axle assembly, including worm gear shaft (1), worm gear axle sleeve (3), it is characterised in that: the worm gear
Axle sleeve (3) is equipped with a stepped hole (3-1) using nylon material production molding, the axle center of the worm gear axle sleeve (3), the stepped hole
Oil sealing (4) are equipped in the large diameter hole of (3-1), the shaft lower end of the worm gear shaft (1) is fixed with worm gear (2), worm gear shaft (1)
Shaft middle section is equipped with helicla flute section (1-1), and rotation direction and the worm gear shaft (1) of the helicla flute section (1-1) rotate forward contrary, institute
The middle part for stating helicla flute section (1-1) is equipped with a limited ring groove (1-2), and shaft a part of the worm gear shaft (1) is inserted into worm gear shaft
In the stepped hole (3-1) for covering (3), the diameter holes of stepped hole (3-1) are slidably matched with shaft, and the upper end of shaft is located at stepped hole
Sealing, the helicla flute section (1-1) of worm gear shaft (1) shaft, a part are cooperatively formed in (3-1) large diameter hole and with oil sealing (4)
In the diameter holes of stepped hole (3-1), another part extends worm gear axle sleeve (3) outside, and the worm gear axle sleeve (3), which is equipped with, to supply
Positioning pin (5) insertion forms the dowel hole (3-2) of the axial limiting of worm gear shaft (1), the dowel hole (3-2) and worm gear shaft
(1) limited ring groove (1-2) is corresponding.
2. metrograph worm gear axle assembly according to claim 1, it is characterised in that: the worm gear axle sleeve (3) uses
Nylon material injection molding.
3. metrograph worm gear axle assembly according to claim 1, it is characterised in that: worm gear axle sleeve (3) upper end
Outer circle is equipped with the screw thread (3-4) for installing sensor.
4. metrograph worm gear axle assembly according to claim 1, it is characterised in that: on the worm gear axle sleeve (3)
Dowel hole (3-2) is in mutually to cut setting with worm gear shaft (1).
5. metrograph worm gear axle assembly according to claim 1, it is characterised in that: worm gear axle sleeve (3) periphery
Equipped with installation annular groove (3-3), sealing ring (6) are installed in the installation annular groove (3-3).
6. metrograph worm gear axle assembly according to claim 1, it is characterised in that: the worm gear (2) uses nylon
Material is fixed by injection injection molding and worm gear shaft (1).
7. metrograph worm gear axle assembly according to claim 1, it is characterised in that: the oil sealing (4) passes through worm gear
The hole shoulder axially position of axle sleeve (3) stepped hole (3-1).
8. metrograph worm gear axle assembly according to claim 1, it is characterised in that: the positioning pin (5) is volume pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910252321.3A CN109869470A (en) | 2019-03-29 | 2019-03-29 | Metrograph worm gear axle assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910252321.3A CN109869470A (en) | 2019-03-29 | 2019-03-29 | Metrograph worm gear axle assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109869470A true CN109869470A (en) | 2019-06-11 |
Family
ID=66921699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910252321.3A Pending CN109869470A (en) | 2019-03-29 | 2019-03-29 | Metrograph worm gear axle assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109869470A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4466300A (en) * | 1981-02-20 | 1984-08-21 | Nissan Motor Company, Limited | Speedometer drive gear arrangement in transaxle |
| CN205605734U (en) * | 2016-02-02 | 2016-09-28 | 陕西法士特齿轮有限责任公司 | Mechanical type nylon odometer gear assembly |
| CN208547647U (en) * | 2018-04-28 | 2019-02-26 | 重庆长安汽车股份有限公司 | A kind of speedometer, speed changer and automobile |
| CN210034348U (en) * | 2019-03-29 | 2020-02-07 | 重庆青山工业有限责任公司 | Assembly structure of automobile speedometer worm wheel shaft assembly |
-
2019
- 2019-03-29 CN CN201910252321.3A patent/CN109869470A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4466300A (en) * | 1981-02-20 | 1984-08-21 | Nissan Motor Company, Limited | Speedometer drive gear arrangement in transaxle |
| CN205605734U (en) * | 2016-02-02 | 2016-09-28 | 陕西法士特齿轮有限责任公司 | Mechanical type nylon odometer gear assembly |
| CN208547647U (en) * | 2018-04-28 | 2019-02-26 | 重庆长安汽车股份有限公司 | A kind of speedometer, speed changer and automobile |
| CN210034348U (en) * | 2019-03-29 | 2020-02-07 | 重庆青山工业有限责任公司 | Assembly structure of automobile speedometer worm wheel shaft assembly |
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