CN105711638A - Gear and rack rolling compressing device - Google Patents
Gear and rack rolling compressing device Download PDFInfo
- Publication number
- CN105711638A CN105711638A CN201610159802.6A CN201610159802A CN105711638A CN 105711638 A CN105711638 A CN 105711638A CN 201610159802 A CN201610159802 A CN 201610159802A CN 105711638 A CN105711638 A CN 105711638A
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- CN
- China
- Prior art keywords
- pinch rollers
- tooth bar
- rack
- housing
- supporting seat
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D3/00—Steering gears
- B62D3/02—Steering gears mechanical
- B62D3/12—Steering gears mechanical of rack-and-pinion type
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention provides a gear and rack rolling compressing device. A casing is a welding element or a casting element formed by three spatially crossing hollow step round tubes; a driving gear and a relevant support element of the driving gear are rotationally arranged in the hollow step round tube of the casing in the vertical direction; a rack is glidingly arranged in the long hollow step round tube of the casing in the horizontal direction; a compression rolling wheel is rotationally arranged on a support seat through a mandrel, a bearing, a gasket, a retainer ring and a screw; the support seat is glidingly arranged in the other short hollow step round tube of the casing in the horizontal direction; the compression rolling wheel supported by one end of the support seat tightly presses the rack onto the driving gear in a rolling contact way; the other end of the support seat is tightly compressed by a plurality of annular disc-shaped elastic bodies. The gear and rack rolling compressing device has the advantages that the rolling compression mode is used, so that the gear abrasion and the device maintenance cost are greatly reduced; the vibration, the noise and abnormal sound are fundamentally eliminated; the device reliability is improved; the structure is simple; parts are few; the assembly is easy; the cost is low.
Description
Technical field
The invention belongs to the transfer technical field of vehicle, the rack-and-pinion particularly relating to a kind of transfer rolls hold down gag.
Background technology
The transfer of vehicle is typically provided rack and pinion drive mechanism, in the process of rack and pinion engagement operating, suitable gap must be kept therebetween.If excesssive gap, then operation process easily produces vibration and noise, if gap is too small, then may result in rubbing excessive and operating and have some setbacks or stuck.Prior art is generally adopted elastic support structure to the certain precompression of rack-and-pinion, makes rack-and-pinion be laminated together, keep therebetween suitable gap.
Patent No. ZL200980150743.4 discloses a kind of device for being pressed to by tooth bar on the driver pinion engaged with this tooth bar, in particular for the steering gear of motor vehicles, described device has pressure containing part that can be loaded, that be directed in housing movably towards the direction of tooth bar and for compensating the adjusting apparatus in the gap come across in steering gear.In known device, the gap of pressure containing part must adjust by adjusting screw.This is highly difficult.Therefore according to the present invention, arranging spring washer between adjusting apparatus and pressure containing part, in the region of spring washer, adjusting apparatus has projection and pressure containing part has a recess, or pressure containing part has projection and adjusting apparatus has recess.
Patent No. ZL201180026844.8 discloses a kind of for tooth bar is pressed to the hold down gag on the little gear engaged with this tooth bar, in particular for the steering gear of motor vehicles, this hold down gag has pressure containing part that can be loaded by compression spring, that can guide movably in the housing towards tooth bar direction and for compensating the adjusting apparatus in the gap occurred in steering gear.Between adjusting apparatus and pressure containing part, arrange elastic washer, in the region of elastic washer, adjusting apparatus there is projection and pressure containing part has a recess or pressure containing part has projection and adjusting apparatus has recess.Adjusting apparatus have in addition two can adjustment disk in relative rotation, said two adjustment disk reclines mutually on the contact surface, and described contact surface has at least two inclined plane.Whole adjusting apparatus together with pressure containing part, elastic washer, compression spring when application clamping pin pre-assembled be assembly unit.
Patent No. ZL200580036048.7 discloses a kind of for a tooth bar is pressed to the device on a little gear, there is a wedge and an adjusting apparatus, wherein set, wedge and adjusting apparatus are respectively provided with the bearing-surface being mutually aligned, they recline mutually at an initial position, and at least one of which bearing-surface is configured to elastic.Wedge has a wedge body and an axle journal stretched out to adjusting apparatus direction, and its free end is configured to bearing-surface.Adjusting apparatus is configured at least two pieces, adjusts screw and a spring washer including one.Spring washer is arranged on and adjusts between screw and wedge and constitute the bearing-surface of the free end for axle journal.
Patent No. ZL201020682816.4 discloses the rack-and-pinion compressing structure of a kind of transfer, including: housing, it is installed in rotation on the gear in housing, arrange in the housing and the tooth bar engaged with gear, install in the housing and support the supporting seat of tooth bar, spiral compression spring and install adjustment bolt in the housing by threaded engagement, described spiral compression spring is arranged between supporting seat and adjustment bolt and abuts with supporting seat and adjustment bolt respectively, described rack-and-pinion compressing structure also includes the ring-type hard elastomer that ratio of rigidity spiral compression spring is big, described ring-type hard elastomer is arranged between supporting seat and adjustment bolt and abuts with supporting seat and adjustment bolt respectively.This rack-and-pinion compressing structure both can eliminate vibration and noise, can compensate for again the wearing clearance between rack-and-pinion.
Patent No. ZL201410098194.3 discloses a kind of automobile manual steering gear and compresses guiding mechanism, includes a bearing, helical spring, adjustment plug screw and butterfly spring；Propping up bearing is cylindrical hollow structure, and its one end is circular arc concave structure, with tooth bar face of cylinder compression fit；Described circular arc concave surface is provided with wear-resistant material layer；Described bearing is arranged in steering gear housing body；The other end propping up bearing is disposed with helical spring, adjusts plug screw butterfly spring and check bolt；Described helical spring is arranged in the hollow structure of a bearing, and a bearing is withstood in one end, and the other end contacts with adjusting plug screw inner surface.The present invention, by including the butterfly spring of stack combinations assembling and with the compression guiding mechanism adjusting plug screw of O, compensates the back lash of rack-and-pinion, eliminates road of jolting simultaneously and bearing occurs and the rigid collision adjusting plug screw and the strike note that produces.
Above-mentioned five kinds of rack-and-pinion compressing structures suffer from the drawback that, one is that seal face exists sliding friction frequently, though being provided with high-abrasive material at contact surface, but high-abrasive material need to safeguard replacing eventually；Two is just to eliminate vibration, noise and abnormal sound simply by the presence of sliding friction, and by adding, lubricant is very many can only reduce vibration, noise and abnormal sound for the moment；Three is that the face that is pressed into contact with all adopts V-type or semi-circular groove to add boss structure in order to prevent tooth bar from reversing and radially to rock so that be pressed into contact with face and contact force strengthens, and aggravate friction；Four be adopt flexible member and small part more, assemble complicated and difficult.
Summary of the invention
It is an object of the invention to provide a kind of motor turning rack-and-pinion and roll hold down gag, it is achieved steering rack is rolled pre-pressing, it is to avoid sliding friction causes vibration, noise and abnormal sound.
It is an object of the invention to be achieved through the following technical solutions:
A kind of rack-and-pinion rolls hold down gag, including: housing, supporting seat, axle, lubricating cup, pinch rollers, driving gear, tooth bar, bearing, packing ring, back-up ring, screw, O RunddichtringO, the dish-like elastomer of ring-type, adjustment bolt, check bolt.Described housing is the weldment being made up of three hollow ladder barrel of space intersection or a cast member, and described driving gear and relevant support member thereof are rotatably installed in the hollow ladder barrel of the vertical direction of described housing；Described tooth bar is slidably mounted in the hollow ladder barrel of a horizontal direction of housing；Described pinch rollers is rotatably installed on supporting seat by axle, bearing, packing ring, back-up ring, screw, and the dish-like elastomer of described supporting seat, ring-type and adjustment bolt are arranged in the hollow ladder barrel of another horizontal direction of described housing.Described tooth bar is by being pressed on driving gear with pinch rollers Structure deformation, and described pinch rollers is by bearing radial force for a pair and can bear again the bearing of axial force and axle is arranged in supporting seat；Described supporting seat is slidably mounted in described housing, and axle and bearings pinch rollers are passed through in its one end, and the other end is compressed by the dish-like elastomer of multiple ring-types；The dish-like elastomer of described ring-type is placed between adjustment bolt and supporting seat, by adjusting bolt presses supporting seat；Described adjustment bolt and housing are threaded connection, and are fixed on housing by check bolt and prevent from rotating because of vibration loosening.
It is trapezoidal groove that described pinch rollers external cylindrical surface is circumferentially with cross section, it is trapezoidal and length and the suitable axial boss of tooth bar length that described tooth bar back of the body flank is provided with the cross section coordinated with pinch rollers, trapezoid boss two bottom surface that pinch rollers trapezoidal groove two end face is provided with tooth bar contacts, and the trapezoid boss two sides base contact that the top, trapezoidal groove two sides in pinch rollers is provided with tooth bar.
Described supporting seat is a ladder cylinder, it is radially provided with, by tooth bar end, the shoulder hole installing axle and holds the half opening U-type groove of pinch rollers, it is provided with the boss installing the dish-like elastomer of ring-type away from tooth bar one end, and the cylinder circumference between boss and half opening U-type groove has the twice cannelure in order to mounting O-shaped sealing ring.
The big end of described axle has the axial blind hole injecting lubricant medium, and blind hole end has the radial direction through hole of a described pinch rollers groove of connection；In the groove of described pinch rollers corresponding uniform multiple for by the radial hole of lubricant medium；And the described big end position of housing respective mandrels is provided with the radial direction screw installing the lubricating cup injecting lubricant medium.
The present invention is relative to existing patented technology, and its good effect is fairly obvious, and one is adopt to roll compression mode, and rolling friction is compared sliding friction and greatly reduced abrasion, reduces device maintenance cost；Two is compare sliding friction, and rolling friction eliminates because rack-and-pinion compresses vibration, noise and the abnormal sound brought root, reduces fault occurrence frequency, is greatly improved device lifetime；Three is simple in construction, and parts are less, and assembly technology is simple, cost is low.
Accompanying drawing explanation
Fig. 1 is front view of the present invention (internal structure profile)；
Fig. 2 is right view of the present invention；
Fig. 3 is top view of the present invention；
Fig. 4 is the partial enlarged drawing of Fig. 1 of the present invention；
Fig. 5 is that supporting seat of the present invention looks schematic diagram；
Fig. 6 is that pinch rollers of the present invention looks schematic diagram；
Fig. 7 is that schematic diagram looked by tooth bar of the present invention.
In figure: 1-housing；2-supporting seat；3-axle；4-lubricating cup；5-pinch rollers；5a-pinch rollers trapezoidal groove；5b-pinch rollers trapezoidal groove end face；5c-pinch rollers trapezoidal groove side；6-driving gear；7-tooth bar；7a-tooth bar trapezoid boss；7b-tooth bar trapezoid boss bottom surface；7c-tooth bar trapezoid boss side；8-bearing;9-packing ring；10-back-up ring；11-screw；12-O RunddichtringO；The dish-like elastomer of 13-ring-type；14-adjusts bolt；15-check bolt.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is elaborated.
With reference to Fig. 1-5, a kind of rack-and-pinion rolls hold down gag, is mainly made up of housing 1, supporting seat 2, axle 3, lubricating cup 4, pinch rollers 5, driving gear 6, tooth bar 7, bearing 8, packing ring 9, back-up ring 10, screw 11, O RunddichtringO 12, the dish-like elastomer 13 of ring-type, adjustment bolt 14 and check bolt 15.
Described housing 1 is the supportive body part of whole hold down gag, as shown in Figure 1, described housing 1 is the weldment being made up of three hollow ladder barrel of space intersection or a cast member, and described driving gear 6 and relevant support member thereof are rotatably installed in the hollow ladder barrel of vertical direction of described housing 1；Described tooth bar 7 is slidably mounted in the hollow ladder barrel of a horizontal direction of housing 1；Described pinch rollers 5 is arranged on supporting seat 2 by axle 3, bearing 8, packing ring 9, back-up ring 10, screw 11, and the dish-like elastomer of described supporting seat 2, ring-type 13 and adjustment bolt 14 are arranged in the hollow ladder barrel of another horizontal direction of described housing 1.
As it is shown in figure 1, described tooth bar 7 is by being pressed on driving gear 6 with pinch rollers 5 Structure deformation, described pinch rollers 5 is by bearing radial force for a pair and can bear again the bearing 8 of axial force and axle 3 is arranged in supporting seat 2；Described supporting seat 2 is slidably mounted in described housing 1, and axle 3 and bearing 8 support compression roller 5 are passed through in its one end, and the other end is compressed by the dish-like elastomer 13 of multiple ring-types；The dish-like elastomer 13 of described ring-type is adjusted bolt 14 and compresses；Described adjustment bolt 14 and housing 1 left end are threaded connection, and are fixed on housing 1 by check bolt 15 and prevent from rotating and loosen.
Described supporting seat 2 is a ladder cylinder, as shown in Figure 5, its one end is radially provided with the shoulder hole installing axle 3 and holds the half opening U-type groove of pinch rollers 5, the other end is provided with the axial boss installing the dish-like elastomer 13 of ring-type, and the cylinder circumference between described boss and half opening U-type groove has the twice cannelure in order to mounting O-shaped sealing ring 12.
It is trapezoidal groove that described pinch rollers 5 external cylindrical surface is circumferentially with cross section, as shown in figs. 4-7, carrying on the back flank on described tooth bar 7, to be axially arranged with the cross section coordinated with pinch rollers 5 be trapezoidal boss, trapezoid boss two bottom surface that pinch rollers 5 groove two end face is provided with tooth bar 7 contacts, and the trapezoid boss two sides base contact that the top, groove two sides in pinch rollers 5 is provided with tooth bar 7.
Described axle 3 is held greatly and is had the axial blind hole injecting grease, as shown in Figure 1, blind hole end has the radial direction through hole of a connection described pinch rollers 5 groove, in the groove of described pinch rollers 5 corresponding uniform multiple can by the radial hole of lubricant medium, and the corresponding described big end position of axle 3 of described housing 1 is provided with and installs the radial direction screw of lubricating cup 4 injecting lubricant medium.
Described adjustment bolt 14 circumference is uniform multiple for the axial aperture through check bolt 15, and the hollow ladder barrel end face edge of described housing 1 mounting and adjusting bolt 14 is provided with the axial screw of an installation check bolt 15, as shown in Figure 1.
Work process of the present invention describes as follows:
When motor turning, steering wheel drives driving gear 6 to rotate, the tooth bar 7 engaged is subject to tangential, the axially and radially component of driving gear 6, tooth bar 7 slides within the case 1 under described tangential component effect and drives deflecting roller to turn to, and pinch rollers trapezoidal groove end face 5b drives pinch rollers 5 to rotate under the force of rolling friction effect being subject to tooth bar trapezoid boss bottom surface 7b simultaneously；And the precompression that tooth bar trapezoid boss bottom surface 7b is subject to pinch rollers trapezoidal groove end face 5b offsets described radial component, and bottom tooth bar trapezoid boss side 7c, it is subject to the precompression described axial thrust load of counteracting at 5c top, pinch rollers trapezoidal groove side, the above two precompression size can be passed through to adjust bolt 14 and be adjusted, by check bolt 15, adjustment bolt 14 being fixed on housing 1 after adjustment is suitable prevents rotation loosening, under the above two precompression effect, reach to eliminate or at utmost reduce the engaged transmission gap of tooth bar 7 and driving gear 6.
Above example simply describes structure and the work process of the present invention in detail, does not limit the technology design of the present invention, all equivalent improvement made according to the present invention or the change done on this basis, is all contained by the present patent application.
Claims (5)
1. rack-and-pinion rolls a hold down gag, including: housing (1), supporting seat (2), axle (3), lubricating cup (4), pinch rollers (5), driving gear (6), tooth bar (7), bearing (8), packing ring (9), back-up ring (10), screw (11), O RunddichtringO (12), the dish-like elastomer of ring-type (13), adjustment bolt (14), check bolt (15)；Described housing (1) is the weldment being made up of three hollow ladder barrel of space intersection or a cast member, and described driving gear (6) and relevant support member thereof are rotatably installed in the hollow ladder barrel of vertical direction of described housing (1)；Described tooth bar (7) is slidably mounted in the hollow ladder barrel of a horizontal direction of housing (1)；Described pinch rollers (5) is rotatably installed on supporting seat (2) by axle (3), bearing (8), packing ring (9), back-up ring (10), screw (11), and described supporting seat (2), the dish-like elastomer of ring-type (13) and adjustment bolt (14) are arranged in the hollow ladder barrel of another horizontal direction of described housing (1)；It is characterized in that, described tooth bar (7) is by being pressed on driving gear (6) with pinch rollers (5) Structure deformation, and described pinch rollers (5) is by bearing radial force for a pair and can bear again the bearing (8) of axial force and axle (3) is arranged in supporting seat (2)；Described supporting seat (2) is slidably mounted in described housing (1), axle (3) and bearing (8) support compression roller (5) are passed through in its one end, and the other end is compressed by the dish-like elastomer of multiple ring-types (13)；The dish-like elastomer of described ring-type (13) is placed between adjustment bolt (14) and supporting seat (2), compresses supporting seat (2) by adjusting bolt (14)；Described adjustment bolt (14) and housing (1) are threaded connection, and are fixed on housing (1) by check bolt (15) and prevent from rotating because of vibration loosening.
2. rack-and-pinion hold down gag as claimed in claim 1, it is characterized in that, it is trapezoidal groove that described pinch rollers (5) external cylindrical surface is circumferentially with cross section, it is trapezoidal and length and the suitable axial boss of tooth bar length that described tooth bar (7) back of the body flank is provided with the cross section coordinated with pinch rollers (5), trapezoid boss two bottom surface (7b) that pinch rollers (5) trapezoidal groove two end face (5b) is provided with tooth bar (7) contacts, and trapezoid boss two sides (7c) base contact that trapezoidal groove two sides (5c) top in pinch rollers (5) is provided with tooth bar (7).
3. rack-and-pinion hold down gag as claimed in claim 1, it is characterized in that, described supporting seat (2) is a ladder cylinder, it is radially provided with, by tooth bar (7) end, the shoulder hole installing axle (3) and holds the half opening U-type groove of pinch rollers (5), it is provided with the boss installing the dish-like elastomer of ring-type (13) away from tooth bar (7) one end, and the cylinder circumference between boss and half opening U-type groove has twice in order to install the cannelure of o RunddichtringO (12).
4. rack-and-pinion hold down gag as claimed in claim 1, it is characterised in that described axle (3) end greatly has the axial blind hole injecting lubricant medium, and blind hole end has the radial direction through hole of a connection described pinch rollers (5) groove；In the groove of described pinch rollers (5) corresponding uniform multiple for by the radial hole of lubricant medium；And the big end position of described housing (1) respective mandrels (3) is provided with the radial direction screw installing the lubricating cup (4) injecting lubricant medium.
5. rack-and-pinion hold down gag as claimed in claim 1, it is characterised in that described adjustment bolt (14) circumference is uniform multiple for the axial aperture through check bolt (15)；And the end face edge of described housing (1) mounting and adjusting bolt (14) is provided with the axial screw of an installation check bolt (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610159802.6A CN105711638A (en) | 2016-03-21 | 2016-03-21 | Gear and rack rolling compressing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610159802.6A CN105711638A (en) | 2016-03-21 | 2016-03-21 | Gear and rack rolling compressing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105711638A true CN105711638A (en) | 2016-06-29 |
Family
ID=56158777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610159802.6A Pending CN105711638A (en) | 2016-03-21 | 2016-03-21 | Gear and rack rolling compressing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105711638A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107870248A (en) * | 2017-11-13 | 2018-04-03 | 威海威高生物科技有限公司 | Reaction cup conveying device |
| CN107985390A (en) * | 2017-11-17 | 2018-05-04 | 广东南利科技有限公司 | Ball head screw thread anti loosening structure in auto steering ware |
| CN110497956A (en) * | 2019-08-12 | 2019-11-26 | 肇庆学院 | A kind of gear shaft of automobile steering device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020152825A1 (en) * | 2001-04-20 | 2002-10-24 | Trw Inc. | Rack and pinion steering gear with low friction roller yoke design |
| WO2006123719A1 (en) * | 2005-05-18 | 2006-11-23 | Jtekt Corporation | Rack guide, and rack and pinion steering device with the rack guide |
| CN102892663A (en) * | 2011-05-13 | 2013-01-23 | 日本精工株式会社 | Rack-and-pinion steering gear unit |
| CN203739968U (en) * | 2014-02-24 | 2014-07-30 | 杭州世宝汽车方向机有限公司 | Gear rack supporting seat |
| CN205499043U (en) * | 2016-03-21 | 2016-08-24 | 邵阳学院 | Rack and pinion roll closing device |
-
2016
- 2016-03-21 CN CN201610159802.6A patent/CN105711638A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020152825A1 (en) * | 2001-04-20 | 2002-10-24 | Trw Inc. | Rack and pinion steering gear with low friction roller yoke design |
| WO2006123719A1 (en) * | 2005-05-18 | 2006-11-23 | Jtekt Corporation | Rack guide, and rack and pinion steering device with the rack guide |
| CN102892663A (en) * | 2011-05-13 | 2013-01-23 | 日本精工株式会社 | Rack-and-pinion steering gear unit |
| CN203739968U (en) * | 2014-02-24 | 2014-07-30 | 杭州世宝汽车方向机有限公司 | Gear rack supporting seat |
| CN205499043U (en) * | 2016-03-21 | 2016-08-24 | 邵阳学院 | Rack and pinion roll closing device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107870248A (en) * | 2017-11-13 | 2018-04-03 | 威海威高生物科技有限公司 | Reaction cup conveying device |
| CN107870248B (en) * | 2017-11-13 | 2024-03-12 | 威海威高生物科技有限公司 | Reaction cup conveying device |
| CN107985390A (en) * | 2017-11-17 | 2018-05-04 | 广东南利科技有限公司 | Ball head screw thread anti loosening structure in auto steering ware |
| CN110497956A (en) * | 2019-08-12 | 2019-11-26 | 肇庆学院 | A kind of gear shaft of automobile steering device |
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Application publication date: 20160629 |
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