CN205499043U - Rack and pinion roll closing device - Google Patents
Rack and pinion roll closing device Download PDFInfo
- Publication number
- CN205499043U CN205499043U CN201620215615.0U CN201620215615U CN205499043U CN 205499043 U CN205499043 U CN 205499043U CN 201620215615 U CN201620215615 U CN 201620215615U CN 205499043 U CN205499043 U CN 205499043U
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- China
- Prior art keywords
- pinch rollers
- tooth bar
- rack
- ring
- housing
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Abstract
The utility model provides a rack and pinion roll closing device, the casing is a welding spare or a cast member of compriseing the crossing hollow ladder drum in three space, driving gear and relevant support piece rotatably install in the hollow ladder drum of the vertical direction of casing, install in the vast sky heart ladder drum of a horizontal direction of casing the rack slidable, pressing idler wheel passes through mandrel, bearing, packing ring, retaining ring, screw and rotatably installs on the supporting seat, and install the supporting seat slidable in the hollow ladder drum of weak point of another horizontal direction of casing, the pressing idler wheel rolling contact that supporting seat one end supported compresses tightly the rack is to the driving gear, and the other end is compressed tightly by a plurality of cyclic annular disk -type elastomers, cyclic annular disk -type elastomer is arranged in between adjusting bolt and the supporting seat, adjusting bolt passes through threaded connection with the casing to it prevents to take place rotatoryly not hard up because of the vibration to be fixed in the casing through the check bolt. The utility model discloses a roll compresses tightly the mode, and rolling friction compares sliding friction and greatly reduces wearing and tearing, reduces device maintenance cost, eliminates because of rack and pinion compresses tightly vibration, noise and the abnormal sound that brings from the root, reduces trouble occurring frequency, has improved device lifetime greatly, and simple structure, and spare part is less, and assembly process is simple, with low costs.
Description
Technical field
This utility model belongs to the transfer technical field of vehicle, and 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, during rack and pinion engagement operates, suitable gap must be kept therebetween.If excesssive gap, then operation process easily produces vibration and noise, if gap is too small, then may cause rubbing excessive and operating and have some setbacks or stuck.General in prior art use elastic support structure to the certain precompression of rack-and-pinion, make rack-and-pinion be laminated together, keep therebetween suitable gap.
Patent No. ZL200980150743.4 discloses a kind of for tooth bar is pressed to the device 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, the most against one another, and described contact surface has at least two inclined plane to said two adjustment disk.Whole adjusting apparatus together with pressure containing part, elastic washer, compression spring application clamping pin in the case of 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 mutually recline 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 the bearing-surface adjusting between screw and wedge and constituting the free end for axle journal.
Patent No. ZL201020682816.4 discloses the rack-and-pinion compressing structure of a kind of transfer, including: housing, the gear being installed in rotation in housing, the tooth bar in the housing and engaged with gear is set, install in the housing and support the support seat of tooth bar, spiral compression spring and install adjustment bolt in the housing by threaded engagement, described spiral compression spring is arranged between support seat and adjustment bolt and abuts with support 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 support seat and adjustment bolt and abuts with support 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 uses 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 use flexible member and small part more, assemble complicated and difficult.
Summary of the invention
The purpose of this utility model is to provide a kind of motor turning rack-and-pinion and rolls hold down gag, it is achieved steering rack is rolled pre-pressing, it is to avoid sliding friction causes vibration, noise and abnormal sound.
The purpose of this utility model is achieved through the following technical solutions:
A kind of rack-and-pinion rolls hold down gag, including: housing, support seat, mandrel, lubricating cup, pinch rollers, driving gear, tooth bar, bearing, packing ring, back-up ring, screw, O RunddichtringO, ring-type dish-like elastomer, adjustment bolt, check bolt.Described housing is the weldment being made up of three hollow ladder barrel of space intersection or a cast member, in the hollow ladder barrel of the vertical direction that described driving gear and relevant support member thereof are rotatably installed in described housing；In the hollow ladder barrel of the horizontal direction that described tooth bar is slidably mounted on housing；Described pinch rollers is rotatably installed on support seat by mandrel, bearing, packing ring, back-up ring, screw, and in the hollow ladder barrel of another horizontal direction that described support seat, ring-type dish-like elastomer and adjustment bolt are arranged on 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 mandrel is arranged in support seat；Described support seat is slidably mounted in described housing, and mandrel and bearings pinch rollers are passed through in its one end, and the other end is compressed by multiple ring-type dish-like elastomers；Described ring-type dish-like elastomer is placed in adjustment bolt and supports between seat, supports seat by adjusting bolt presses；Described adjustment bolt is threaded connection with housing, and is fixed on housing by check bolt and prevents 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 the length axial boss suitable with 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 contacts bottom the trapezoid boss two sides that are provided with tooth bar, the top, trapezoidal groove two sides in pinch rollers.
Described support seat is a ladder cylinder, it is radially provided with the shoulder hole installing mandrel and the half opening U-type groove accommodating pinch rollers by tooth bar end, it is provided with the boss installing ring-type dish-like elastomer 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 mandrel has the axial blind hole injecting lubricant medium, and blind hole end has the radial direction through hole of a connection described pinch rollers groove；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.
This utility model is relative to existing patented technology, and its good effect is fairly obvious, and one is to use to roll compression mode, and rolling friction is compared sliding friction and greatly reduced abrasion, reduces device maintenance cost；Two is to compare sliding friction, and rolling friction eliminates because rack-and-pinion compresses vibration, noise and the abnormal sound brought from root, reduces fault occurrence frequency, is greatly improved device lifetime；Three is simple in construction, and parts are less, and assembly technology is simple, low cost.
Accompanying drawing explanation
Fig. 1 is this utility model front view (internal structure profile)；
Fig. 2 is this utility model right view；
Fig. 3 is this utility model top view；
Fig. 4 is the partial enlarged drawing of this utility model Fig. 1；
Fig. 5 is that this utility model supports seat regarding schematic diagram；
Fig. 6 is that this utility model pinch rollers regards schematic diagram；
Fig. 7 is that this utility model tooth bar regards schematic diagram；
In figure: 1-housing；2-supports seat；3-mandrel；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 ring-type dish-like elastomer of 13-；14-adjusts bolt；15-check bolt.
Detailed description of the invention
Below in conjunction with the accompanying drawings 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, support seat 2, mandrel 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, ring-type dish-like elastomer 13, 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, in the hollow ladder barrel of the vertical direction that described driving gear 6 and relevant support member thereof are rotatably installed in described housing 1；In the hollow ladder barrel of the horizontal direction that described tooth bar 7 is slidably mounted on housing 1；Described pinch rollers 5 is arranged on support seat 2 by mandrel 3, bearing 8, packing ring 9, back-up ring 10, screw 11, and in the hollow ladder barrel of another horizontal direction that described support seat 2, ring-type dish-like elastomer 13 and adjustment bolt 14 are arranged on 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 mandrel 3 is arranged in support seat 2；Described support seat 2 is slidably mounted in described housing 1, and mandrel 3 and bearing 8 support compression roller 5 are passed through in its one end, and the other end is compressed by multiple ring-type dish-like elastomers 13；Described ring-type dish-like elastomer 13 is adjusted bolt 14 and compresses；Described adjustment bolt 14 is threaded connection with housing 1 left end, and by check bolt 15 be fixed on housing 1 prevent rotate loosen.
Described support seat 2 is a ladder cylinder, as shown in Figure 5, its one end is radially provided with the shoulder hole installing mandrel 3 and the half opening U-type groove accommodating pinch rollers 5, the other end is provided with the axial boss installing ring-type dish-like elastomer 13, 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, carry on the back flank on described tooth bar 7 being axially arranged with the cross section coordinated with pinch rollers 5 is trapezoidal boss, trapezoid boss two bottom surface that pinch rollers 5 groove two end face is provided with tooth bar 7 contacts, and contacts bottom the trapezoid boss two sides that are provided with tooth bar 7, the top, groove two sides in pinch rollers 5.
Described mandrel 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 connection described pinch rollers 5 groove, in the groove of described pinch rollers 5 corresponding uniform multiple can be by the radial hole of lubricant medium, and the corresponding described big end position of mandrel 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.
Utility model works process prescription is as follows:
When motor turning, steering wheel drives driving gear 6 to rotate, the tooth bar 7 engaged is by 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 by tooth bar trapezoid boss bottom surface 7b simultaneously；And tooth bar trapezoid boss bottom surface 7b is offset described radial component by the precompression of pinch rollers trapezoidal groove end face 5b, and by the precompression described axial thrust load of counteracting at 5c top, pinch rollers trapezoidal groove side bottom tooth bar trapezoid boss side 7c, the above two precompression size can be adjusted by adjusting bolt (14), by check bolt 15, adjustment bolt 14 being fixed on housing 1 after adjusting properly prevents rotation from loosening, under the above two precompression effect, reach to eliminate or at utmost reduce tooth bar 7 and the engaged transmission gap of 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, the change that all equivalents made according to the present invention are improved or done on the basis of basis, is all contained by the present patent application.
Claims (5)
1. rack-and-pinion rolls a hold down gag, including: housing (1), support seat (2), mandrel (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), ring-type dish-like elastomer (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, in the hollow ladder barrel of the vertical direction that described driving gear (6) and relevant support member thereof are rotatably installed in described housing (1)；In the hollow ladder barrel of the horizontal direction that described tooth bar (7) is slidably mounted on housing (1)；Described pinch rollers (5) is rotatably installed in support seat (2) by mandrel (3), bearing (8), packing ring (9), back-up ring (10), screw (11), and in the hollow ladder barrel of another horizontal direction that described support seat (2), ring-type dish-like elastomer (13) and adjustment bolt (14) are arranged on 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 mandrel (3) is arranged on and supports in seat (2)；Described support seat (2) is slidably mounted in described housing (1), mandrel (3) and bearing (8) support compression roller (5) are passed through in its one end, and the other end is compressed by multiple ring-type dish-like elastomers (13)；Described ring-type dish-like elastomer (13) is placed in adjustment bolt (14) and supports between seat (2), supports seat (2) by adjusting bolt (14) compression；Described adjustment bolt (14) is threaded connection with housing (1), and is fixed on housing (1) by check bolt (15) and prevents from rotating because of vibration loosening.
2. a kind of rack-and-pinion as claimed in claim 1 rolls hold down gag, 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 the length axial boss suitable with 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 the bottom, trapezoid boss two sides (7c) that trapezoidal groove two sides (5c) top in pinch rollers (5) is provided with tooth bar (7) contacts.
3. a kind of rack-and-pinion as claimed in claim 1 rolls hold down gag, it is characterized in that, described support seat (2) is a ladder cylinder, it is radially provided with the shoulder hole installing mandrel (3) and the half opening U-type groove accommodating pinch rollers (5) by tooth bar (7) end, it is provided with the boss installing ring-type dish-like elastomer (13) away from tooth bar (7) 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 (12).
4. a kind of rack-and-pinion as claimed in claim 1 rolls hold down gag, it is characterized in that, described mandrel (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. a kind of rack-and-pinion as claimed in claim 1 rolls hold down gag, 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 |
|---|---|---|---|
| CN201620215615.0U CN205499043U (en) | 2016-03-21 | 2016-03-21 | Rack and pinion roll closing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620215615.0U CN205499043U (en) | 2016-03-21 | 2016-03-21 | Rack and pinion roll closing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205499043U true CN205499043U (en) | 2016-08-24 |
Family
ID=56733441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620215615.0U Expired - Fee Related CN205499043U (en) | 2016-03-21 | 2016-03-21 | Rack and pinion roll closing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205499043U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105711638A (en) * | 2016-03-21 | 2016-06-29 | 邵阳学院 | Gear and rack rolling compressing device |
| CN109611532A (en) * | 2018-12-13 | 2019-04-12 | 华南理工大学 | A kind of power transmission and its working method |
| CN111120789A (en) * | 2018-10-31 | 2020-05-08 | 佳能株式会社 | Rotating mechanism and equipment comprising same |
-
2016
- 2016-03-21 CN CN201620215615.0U patent/CN205499043U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105711638A (en) * | 2016-03-21 | 2016-06-29 | 邵阳学院 | Gear and rack rolling compressing device |
| CN111120789A (en) * | 2018-10-31 | 2020-05-08 | 佳能株式会社 | Rotating mechanism and equipment comprising same |
| US11448942B2 (en) | 2018-10-31 | 2022-09-20 | Canon Kabushiki Kaisha | Rotational mechanism and apparatus including the same |
| CN109611532A (en) * | 2018-12-13 | 2019-04-12 | 华南理工大学 | A kind of power transmission and its working method |
| CN109611532B (en) * | 2018-12-13 | 2023-06-20 | 华南理工大学 | Power transmission device and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 Termination date: 20190321 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |