CN109296639B - Novel sliding pair assembly - Google Patents
Novel sliding pair assembly Download PDFInfo
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- CN109296639B CN109296639B CN201811488025.5A CN201811488025A CN109296639B CN 109296639 B CN109296639 B CN 109296639B CN 201811488025 A CN201811488025 A CN 201811488025A CN 109296639 B CN109296639 B CN 109296639B
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- sliding
- sliding pair
- arc
- outer sleeve
- slip
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
- F16C29/04—Ball or roller bearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bearings For Parts Moving Linearly (AREA)
Abstract
The invention belongs to the technical field of automobile engineering, and discloses a novel sliding pair assembly which comprises a sliding auxiliary shaft, a sliding pair outer sleeve, a first connecting fork arranged at one end of the sliding pair outer sleeve and a second connecting fork arranged at the end part of the sliding auxiliary shaft extending out of the sliding pair outer sleeve, wherein a plurality of separating strips are arranged on the periphery of the sliding auxiliary shaft along the length direction of the shaft, a groove is formed between every two adjacent separating strips, an arc-shaped elastic sheet with a bent and arched part facing the sliding pair outer sleeve is arranged in the groove along the length direction, two guide rails are symmetrically arranged above the arc-shaped elastic sheet in the width direction, balls are arranged between the two guide rails, the surfaces of the guide rails, which are in contact with the balls, are matched with the periphery of the balls, and a guide chute which is matched with the periphery of the balls and penetrates through the length direction of the sliding pair outer sleeve is arranged on the inner surface of the sliding pair outer sleeve at the ball arrangement position. The arc-shaped elastic sheet can generate elasticity, eliminate the gap generated by the abrasion of the ball, avoid the clamping stagnation phenomenon, effectively improve the sliding force, transmit larger torque, eliminate the angle gap, and ensure the accuracy and the stability of steering and aligning.
Description
Technical Field
The invention relates to the technical field of automobile engineering, in particular to a novel sliding pair assembly.
Background
In the sliding pair in the prior art, the matching of the sliding pair outer sleeve and the sliding auxiliary shaft is realized by arranging the ball retainer on the sliding auxiliary shaft and placing the balls on the ball retainer, as shown in the attached drawing 10 in the specification, because an elastic structure with high elasticity is not provided, once the balls are slightly worn, a gap is generated between the sliding pair outer sleeve and the ball retainer, and the gap cannot be automatically eliminated, so that the balls are bound to generate jumping, impact and the like when moving relative to the ball guide chute on the sliding pair outer sleeve in the later period, and further work abnormal sound is caused.
Disclosure of Invention
The invention aims to solve the technical problem of providing a novel sliding pair assembly which can improve the sliding force, transmit larger torque, eliminate the angular clearance and reduce abnormal sound aiming at the defects of the prior art.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a novel vice assembly slides, including the slip countershaft, the vice overcoat of slip on the slip countershaft is established to the cover, locate the first fork that connects of the vice overcoat one end of slip and locate the second that the slip countershaft stretches out in the tip of the vice overcoat of slip and connect the fork, slip countershaft periphery is equipped with a plurality of parting beads along axle length direction, the recess has between the adjacent parting bead, arrange the arc shell fragment that has the crooked hunch-up portion of the vice overcoat of slip towards length direction in the recess, two guide rails are installed to arc shell fragment top symmetry on width direction, arrange the ball between two guide rails, the surface and the ball periphery adaptation of guide rail and ball contact, the vice overcoat internal surface of slip is equipped with in ball arrangement position department and link up the spout that leads of the vice overcoat length direction of slip.
Further, one end of the groove is communicated with a first end portion of the sliding auxiliary shaft in the sliding auxiliary outer sleeve, a first end face of the end portion of the sliding auxiliary shaft is provided with a recessed hole, a first end portion of the arc-shaped elastic sheet extends to the first end portion and is provided with a hook portion which is hooked in the recessed hole, a second end portion of the arc-shaped elastic sheet extends to a non-communicated end of the groove, the arc-shaped elastic sheet is provided with a blocking piece which is attached to the end faces of the two guide rails near the second end portion, an interval section is arranged between the end portion of the separation strip and the first end portion of the sliding auxiliary shaft, the end face of the guide rail near the first end portion is flush with the end face of the separation strip, and a blocking ring is sleeved on the interval section and used for preventing the guide rail from sliding.
Furthermore, the curved arched part of the arc-shaped elastic sheet comprises two sections of arched parts which are connected with each other.
Still further, the highest arched position of the arched arc portion is provided with a curved portion that is curved toward the sliding auxiliary shaft, and a curved end of the curved portion can contact the sliding auxiliary shaft when the arched arc portion is depressed.
Still further, arc shell fragment integral type stamping forming.
Furthermore, the non-through end of the groove is provided with a concave hole, and the second end part of the arc-shaped elastic sheet is inserted into the concave hole.
Furthermore, the second end part of the arc-shaped elastic sheet is in clearance fit with the concave hole.
Further, the sliding pair outer sleeve and the first connection fork are fixed through riveting, pressing and expanding.
Furthermore, each guide sliding groove of the sliding pair outer sleeve is provided with a riveting point for riveting at the end part close to the second connecting fork so as to prevent the ball from sliding out.
Further, the sliding auxiliary shaft and the second connecting fork are fixed through riveting expansion.
Compared with the prior art, the invention has the following beneficial effects:
1) The arc-shaped elastic sheet and the independent guide rail are arranged between the sliding pair outer sleeve and the sliding auxiliary shaft, when the sliding auxiliary shaft and the sliding pair outer sleeve are in transmission, the ball presses down the guide rail and the arc-shaped elastic sheet, the arc-shaped elastic sheet can generate elastic force, the arc-shaped elastic sheet can slowly recover to the initial state to be upwards arched along with the abrasion of the ball, and then the gap generated by the abrasion of the ball is eliminated, the clamping stagnation phenomenon can be completely avoided through the elastic press fit of the guide rail and the arc-shaped elastic sheet, the sliding force is effectively improved, larger torque can be transmitted, the angle gap is eliminated, and the accuracy and the stability of steering and aligning are ensured;
2) The elastic sheet is integrally formed in a punching mode, the stop piece arranged on the elastic sheet and the check ring sleeved on the spacing section can provide restraint for two ends of the guide rail and limit the guide rail to slide in the groove, and in addition, two sections of arched arc parts are arranged on the arc elastic sheet, so that the structural stability of the arc elastic sheet can be improved under the condition that the sufficient elasticity is ensured;
3) The bent part arranged at the arched part of the arc-shaped elastic sheet can prevent the arc-shaped elastic sheet from being compressed to the limit and losing efficacy;
4) The second end part of the arc-shaped elastic sheet and the concave hole of the groove can not be fixed but are in clearance fit, so that the ball and the sliding pair outer sleeve guide chute can be automatically aligned;
5) The sliding pair outer sleeve and the first connecting fork as well as the sliding auxiliary shaft and the second connecting fork are all fixed through riveting expansion, so that the two fixing parts can be firmly occluded, and the functions of excellent fastening and torque transmission are achieved;
6) The sliding pair assembly is simple in structure, the independent guide rail is convenient to machine and manufacture, the overall cost is low, and the comprehensive performance is good.
Drawings
FIG. 1 is a schematic view of the overall structure of the novel sliding pair assembly of embodiment 1;
FIG. 2 is a partial schematic view of the novel sliding pair assembly of embodiment 1 with the first yoke and the outer sleeve of the sliding pair removed;
FIG. 3 is a schematic view of the sliding sub-shaft, the arc-shaped elastic pieces, the guide rails, the balls and the sliding sub-sleeve according to embodiment 1;
FIG. 4 is a schematic view of the structure of two guide rails in a groove according to embodiment 1;
fig. 5 is a schematic structural view of the arc-shaped elastic piece according to embodiment 1;
FIG. 6 is a partial schematic view of the second end of the arc-shaped resilient piece of FIG. 2 inserted into the recess;
FIG. 7 is a schematic view showing the structure of an outer cover of a sliding pair in accordance with embodiment 1;
FIG. 8 is a view showing a rivet point arrangement of the sliding pair outer casing and the first yoke in the embodiment 1;
fig. 9 is a diagram showing arrangement of riveting points at the end of the sliding pair outer sleeve close to the second contact yoke and riveting points of the sliding pair outer sleeve and the second contact yoke in riveting manner in embodiment 1;
FIG. 10 shows an internal transmission structure of a sliding pair in the prior art;
fig. 11 is a view showing the fixing of the sliding pair outer sleeve, the sliding pair shaft and the coupling fork in the sliding pair of the prior art.
Detailed Description
The invention will be further described with reference to the following detailed description, wherein the drawings are given by way of illustration only, and are not intended to be in any way limiting; for a better explanation of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Examples
The novel sliding pair assembly comprises a sliding auxiliary shaft 1, a sliding pair outer sleeve 2 sleeved on the sliding auxiliary shaft, a first connecting fork 31 arranged at one end of the sliding pair outer sleeve and a second connecting fork 32 arranged at the end part of the sliding auxiliary shaft extending out of the sliding pair outer sleeve, wherein the first connecting fork and the second connecting fork are respectively connected with a spline fork 5 used for transmitting torque force from an automobile steering wheel through a cross shaft 4, as shown in figures 1 to 3.
The periphery of the sliding auxiliary shaft 1 is provided with a plurality of separation strips 11 along the shaft length direction, a groove is formed between every two adjacent separation strips 11, an arc-shaped elastic sheet 6 is arranged in the groove along the length direction, the arc-shaped elastic sheet is provided with a bending arch part 61 facing the sliding auxiliary outer sleeve 2, two guide rails 7 extending along the shaft length direction are symmetrically arranged above the arc-shaped elastic sheet 6 in the width direction, balls 8 are arranged between the two guide rails 7, the surfaces of the guide rails 7 and the balls 8 are in contact with each other and are matched with the peripheries of the balls 8, the inner surface of the sliding auxiliary outer sleeve 2 is provided with a guide chute 21 which is matched with the peripheries of the balls and penetrates through the sliding auxiliary outer sleeve along the length direction at the ball arrangement position, and fig. 7 shows the structure of the sliding auxiliary outer sleeve.
Specifically, as shown in fig. 3 and 4, the contact surface between the guide rail 7 and the arc-shaped elastic sheet 6 is also an arc-shaped surface 71 so as to be better matched with the arc-shaped elastic sheet, the side surface of the adjacent partition bar 11 of the sliding auxiliary shaft is respectively contacted with the periphery of one guide rail 7, when the sliding auxiliary assembly works, the ball 8 initially presses down the guide rail 7 and the arc-shaped elastic sheet 6, the arc-shaped elastic sheet 6 gradually arches upwards along with the abrasion of the ball 8, the orientation of the two independently arranged guide rails 7 can be adjusted along with the structural change of the arc-shaped elastic sheet 6, and then the gap generated by the abrasion of the ball 8 is eliminated, so that the ball can be tightly wrapped in the space formed by the two guide rails and the sliding auxiliary outer sleeve sliding groove all the time.
The number of the balls 8 arranged between every two guide rails 7 is six, and the balls do not need to fill the length direction of the whole guide rail, so that the enough telescopic amount of the arc-shaped elastic sheet is ensured.
As shown in fig. 2, 3 and 5, one end of the groove penetrates through to the first end of the sliding auxiliary shaft 1 located in the sliding auxiliary outer sleeve 2, one end face of the end of the sliding auxiliary shaft is provided with a recessed hole 12, the first end of the arc-shaped elastic sheet 6 extends to the first end and is provided with a hook portion 62 hooked in the recessed hole 12, the second end 63 of the arc-shaped elastic sheet extends to the non-penetrating end of the groove, and a blocking sheet 64 attached to the end faces of the two guide rails 7 is arranged at the position, close to the second end, of the arc-shaped elastic sheet. In order to form axial sliding constraint on the guide rail 7 in the direction of the sliding auxiliary shaft 1, a distance section is arranged between the end part of the separation bar 11 and the end part I of the sliding auxiliary shaft 1, wherein the end face of the guide rail close to the end part I of the sliding auxiliary shaft is flush with the end face of the separation bar end part, a check ring 9 is sleeved on the distance section and used for preventing the guide rail 7 from sliding, and the end face of the check ring is attached to the end face of the separation bar end part and the end face of the guide rail. The sliding auxiliary shaft is provided with a plurality of salient points as riveting points at the position of the other end face of the retainer ring, so that the retainer ring is riveted after being assembled, the retainer ring is prevented from sliding out and falling, and meanwhile, the sliding auxiliary shaft is prevented from being pulled out and damaged when bearing qualified tensile force.
In addition, the retainer ring 9 also plays a role of tightly holding the arc-shaped elastic sheet 6, and the hook part 62 of the arc-shaped elastic sheet can be firmly hooked at the concave hole 12.
For guaranteeing arc shell fragment elasticity reliable and stable in structure, this embodiment sets up arc shell fragment's crooked hunch portion 61 into the hunch arc portion that includes two sections and meet, and fretwork portion is established at hunch arc portion center, can further promote arc shell fragment's elasticity, and two sections hunch arc portion handing-over departments are equipped with gusset 611 and cut fretwork portion, make arc shell fragment overall structure tie up stably.
The highest arch position of the arch arc part is also provided with a bending part 612 bending towards the sliding auxiliary shaft 1, and the bending tail end of the bending part 612 can contact the sliding auxiliary shaft 1 when the arch arc part is pressed down, so that the function of preventing the arc elastic sheet 6 from being compressed to the limit and losing efficacy is achieved. Specifically, when the arching arc portion is pressed down, the curved end of the curved portion 612 first contacts the sliding sub-shaft 1, and the other portion of the arching arc portion does not abut against the sliding sub-shaft (the arc spring fails when the arching arc portion abuts against the sliding sub-shaft).
The arc-shaped elastic sheet 6 is formed by integral punch forming, the angular gap can be eliminated freely, and all parts can not be disjointed or easily broken due to external force application.
In order to further ensure the stable installation of the arc-shaped elastic piece 6 in the width direction of the groove, a concave hole 13 may be provided at the non-through end of each groove, as shown in fig. 6, the second end 63 of the arc-shaped elastic piece is inserted into the concave hole 13 so as to obtain a good positioning, and the second end 63 of the arc-shaped elastic piece is a bent U-shaped structure.
The second end 63 of the arc-shaped elastic sheet is in clearance fit with the concave hole 13, the second end cannot be fixed with the concave hole, and the reserved clearance can enable the ball 8 and the sliding pair outer sleeve guide chute 21 to be automatically aligned, namely, when the ball moves in the sliding pair outer sleeve guide chute, the arc-shaped elastic sheet can be forced to slightly change the position according to the degree of fit of the ball and the guide chute, so that the sliding pair assembly can be better adapted to the overall operation.
In addition, the sliding pair outer sleeve, the sliding pair shaft and the connecting fork of the sliding pair assembly in the prior art are all welded and fastened, as shown in fig. 11, the fastening mode is high in cost, difficult in process implementation, resource-wasting and not environment-friendly. In the embodiment, the conventional welding means is reversed, and the sliding pair outer sleeve 2 and the first joint fork 31, and the sliding pair shaft 1 and the second joint fork 32 are all fixed through riveting expansion.
Specifically, as shown in fig. 8, four riveting points 22 are uniformly provided at the mouth of the sliding pair housing 2 near the first yoke 31, the four riveting points correspond to four tooth shapes 23 on the outer periphery of the sliding pair housing, and the four tooth shapes are expanded and riveted at the four riveting points, so that the four tooth shapes are firmly engaged with the inner wall of the first yoke 31 through riveting deformation. As shown in fig. 9, three riveting points 14 are provided on the end surface of the sliding sub shaft 1, and the teeth 15 at the end of the sliding sub shaft can be engaged with the inner wall of the second yoke 32 by expanding and riveting the three riveting points. The expansion riveting is very simple to implement, after the riveting, the tooth shape of the sliding pair outer sleeve is meshed with the inner wall of the first joint fork, and the tooth shape of the sliding pair shaft is meshed with the inner wall of the second joint fork, so that excellent fastening and transmission torque effects can be achieved, and the worry that the loosening and the loosening can be caused by the torque is avoided.
As shown in fig. 9, in order to prevent the balls 8 from coming out of the slide guide grooves 21 of the slide pair housing during operation, the slide guide grooves 21 of the slide pair housing of the present embodiment are further provided with riveting points 24 for riveting at the end portions near the second fork 32, and after the riveting points are riveted with protrusions, the balls can be prevented from slipping out, and the whole slide pair can be prevented from being pulled out and damaged.
This novel sliding pair assembly can effectively improve sliding force, the great moment of torsion of transmission, eliminate the angle clearance, guarantee to turn to and return positive precision and stability to can be on the vice basis of current slip reduce the noise, the vice assembly of slip has been successfully applied to the car, and assembly and operation effect are very good.
It should be understood that the above examples are only for clearly illustrating the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (8)
1. The utility model provides a vice assembly slides, a serial communication port, including the slip countershaft, the cover establish the vice overcoat of slip on the slip countershaft, locate the first fork that connects of vice overcoat one end of slip and locate the second that the slip countershaft stretches out in the tip of the vice overcoat of slip and connect the fork, slip countershaft periphery is equipped with a plurality of parting beads along axle length direction, the recess has between the adjacent parting bead, arrange the arc shell fragment that has the crooked hunch-up portion of the vice overcoat of slip towards length direction in the recess, two guide rails are installed to arc shell fragment top symmetry on the width direction, recess one end link up to the tip that the slip countershaft is located the vice overcoat of slip one, slip countershaft tip one end has the reentrant hole, arc shell fragment first end extends to tip one and is equipped with hook portion and downthehole at the reentrant, arc shell fragment second end extends to the non-through end of recess, the non-through end of recess has the shrinkage pool, the second end of arc shell fragment inserts in the recess, the arc shell fragment is equipped with a separation blade of laminating with two guide rail terminal surfaces near second end, the separation strip tip has the interval section between the tip and the tip one end of the slide outer sleeve, the slide baffle ring is equipped with ball contact with ball end face on the slide baffle ring on the slide end of the slide and the vice guide rail, the slide.
2. The sliding pair assembly of claim 1 wherein the curved arcuate section of the arcuate spring includes two abutting arcuate sections.
3. The sliding pair assembly according to claim 2, wherein the highest arched portion of the arched arcuate portion is provided with a curved portion that curves toward the sliding secondary shaft, and a curved end of the curved portion can contact the sliding secondary shaft when the arched arcuate portion is depressed.
4. The sliding pair assembly of claim 3, wherein the curved spring plate is integrally formed by stamping.
5. The sliding pair assembly of claim 1, wherein the second end of the arcuate spring is in a clearance fit with the recess.
6. The sliding pair assembly of claim 1 wherein the sliding pair outer sleeve is secured to the first interface fork by staking.
7. The sliding pair assembly of claim 1 wherein each of the sliding pair housing guide slots has a rivet point for riveting at an end adjacent the second yoke to prevent the balls from sliding out.
8. The sliding pair assembly of claim 1 wherein the sliding pair shaft and the second interface fork are secured by staking expansion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811488025.5A CN109296639B (en) | 2018-12-06 | 2018-12-06 | Novel sliding pair assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811488025.5A CN109296639B (en) | 2018-12-06 | 2018-12-06 | Novel sliding pair assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109296639A CN109296639A (en) | 2019-02-01 |
| CN109296639B true CN109296639B (en) | 2023-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811488025.5A Active CN109296639B (en) | 2018-12-06 | 2018-12-06 | Novel sliding pair assembly |
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| CN (1) | CN109296639B (en) |
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| Publication number | Publication date |
|---|---|
| CN109296639A (en) | 2019-02-01 |
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