CN211308705U - Steering column with good conductivity - Google Patents
Steering column with good conductivity Download PDFInfo
- Publication number
- CN211308705U CN211308705U CN201921956029.1U CN201921956029U CN211308705U CN 211308705 U CN211308705 U CN 211308705U CN 201921956029 U CN201921956029 U CN 201921956029U CN 211308705 U CN211308705 U CN 211308705U
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- Prior art keywords
- steering
- steering shaft
- column
- spline
- column tube
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- 239000002184 metal Substances 0.000 claims abstract description 40
- 239000004033 plastic Substances 0.000 claims abstract description 37
- 229920003023 plastic Polymers 0.000 claims abstract description 37
- 235000014676 Phragmites communis Nutrition 0.000 claims description 9
- 239000002991 molded plastic Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model relates to a steering column that electric conductive property is good, including the upper column tube, be arranged in the upper steering shaft of upper column tube, be arranged in upper bearing between upper column tube and the upper steering shaft, lower column tube, be arranged in lower steering shaft of lower column tube, be arranged in lower bearing between lower column tube and the lower steering shaft, go up steering shaft lower extreme suit and at the upper steering shaft lower extreme or steering shaft upper end suit down, and the axle that is arranged in the inside is marked as the inner hub, is located the axle of outside and is marked as the outer hub, it has the plastic spline to mould plastics on the periphery wall of inner hub, the outer hub connection is on the plastic spline, still includes the conductive metal piece, seted up on the plastic spline and switched on the notch, the conductive metal piece is installed in switching on the notch, the conductive metal piece all keeps in contact with lower steering shaft and upper steering shaft. The utility model discloses a steering column has a plurality of conductive paths for steering column has good electric conductive property, and simple structure, and job stabilization is reliable, low in production cost.
Description
Technical Field
The utility model relates to an automotive electronics field, concretely relates to steering column that electric conductive property is good.
Background
One way of achieving the grounding of the automobile horn is through a steering column, when a horn switch is pressed down, the switch contacts a steering wheel framework, and the grounding is achieved when the steering column is conducted to a CCB (instrument panel beam). At this time, the steering column needs to ensure that the resistance between the steering shaft and the CCB mounting point on the column is smaller than the designed value, namely, the electric conductivity between the steering shaft and the column is good. In a conventional steering column, as shown in fig. 1, a steering shaft is conducted with a column tube through bearings, and a general column has an upper bearing and a lower bearing, but the steering shaft is divided into an upper section and a lower section for collapsing and four-way adjustment, and the upper section and the lower section of the steering shaft are sleeved through plastic spline fitting on the lower steering shaft, that is, the upper steering shaft and the lower steering shaft are insulated. The tubular column also divide into upper and lower tubular column, installs the plastics sliding sleeve between the upper prop pipe of four-way regulation tubular column and the lower prop pipe and guarantees that the regulating power is even. Therefore, the traditional steering column can only realize the conduction between the steering shaft and the column through the upper bearing, the inner ring and the outer ring of the bearing are in contact conduction through the steel ball, the resistance in the rotating process can be increased, the horn grounding is poor due to the single conduction path, the discontinuity of the horn sound in the rotating process of the steering wheel can occur, and particularly after the bearing is worn and the grease is aged and polluted for a period of time.
In order to ensure the conductivity of the steering column, some manufacturers specially design a conductive bearing with a conductive ring, and the inside and the outside of the bearing are stably conducted through the conductive ring, but because the conductive ring and the inner ring (or the outer ring) of the bearing are in relative contact friction during rotation, extra noise and friction torque can be brought.
SUMMERY OF THE UTILITY MODEL
In view of the foregoing prior art's shortcoming, the to-be-solved technical problem of the utility model is to provide a steering column that electric conductive property is good, on traditional steering column's basis, increased a conductive path, simple structure has improved steering column's electric conductive property.
In order to realize the above-mentioned purpose, the utility model provides a steering column that electric conductive property is good, including the upper column tube, be arranged in the upper steering shaft of upper column tube, be arranged in upper bearing between upper column tube and the upper steering shaft, lower column tube, be arranged in lower steering shaft of lower column tube, be arranged in lower bearing between lower column tube and the lower steering shaft, go up steering shaft lower extreme suit and go up the steering shaft upper end or the lower steering shaft upper end suit at the upper steering shaft lower extreme under, and the axle that is located the inside is marked as the internal connection axle, the axle that is located the outside is marked as the external connection axle, it has moulded plastics the spline on the periphery wall of internal connection axle, external shaft cup joints on the plastics spline, still includes the electrically conductive sheetmetal, the notch that switches on has been seted up on the plastics spline, the electrically conductive sheetmetal is installed in the notch that switches on, the electrically conductive sheetmetal all keeps in contact with lower steering shaft and.
Further, be equipped with two rings of spline rings about on the periphery wall of internal connection axle and have the annular between two rings of splines, the spline ring is arranged and is constituted along the hoop by a plurality of splines, the plastics spline is moulded plastics on two rings of spline rings and annular, it sets up in annular department to switch on the notch.
Further, the conductive metal sheet is abutted to the edge of the conduction notch.
Further, the conductive metal sheet is a metal reed, and the metal reed is in a compressed state between the lower steering shaft and the upper steering shaft.
Further, the opening that switches on the plastics spline is a plurality of, all installs electrically conductive sheetmetal in every opening that switches on.
As mentioned above, the utility model relates to a steering column has following beneficial effect:
through set up on the plastics spline and switch on the notch and set up electrically conductive sheetmetal in switching on the notch, guarantee that electricity sheetmetal and steering spindle and last steering spindle all keep in contact down, down steering spindle and last steering spindle keep the on-state through electrically conductive sheetmetal to this, steering column during operation, except having this conductive path of last steering spindle-upper bearing-upper column tube, still increased a conductive path through electrically conductive sheetmetal: the steering column comprises the upper steering shaft, the conductive metal sheet, the lower steering shaft, the lower bearing and the lower column tube, so that the steering column has two conductive paths, and the conductive performance of the steering column is improved. In addition, in the use process of the steering column, the position of the conductive metal sheet is stable and reliable, so that the conductive performance of the steering column is stable and reliable, a conductive path for grounding the horn can be increased, and the grounding stability is improved. The utility model discloses a steering column, simple structure, job stabilization is reliable, for the scheme that uses conductive bearing, can not bring contact noise, low in production cost.
Drawings
Fig. 1 is a schematic structural view of a steering column according to the present invention, which is a half-sectional view.
Fig. 2 is an enlarged view of circle a of fig. 1.
Description of the element reference numerals
1 upper steering shaft
2 column tube
3 Upper bearing
4 installing support on tubular column
5 lower steering shaft
6 lower column tube
7 lower bearing
8 lower mounting bracket of tubular column
9 Plastic sliding sleeve
10 Plastic spline
11 conductive metal sheet
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
It should be understood that the drawings of the present application are only used to match the contents disclosed in the specification, so as to be known and read by those skilled in the art, and not to limit the practical limitations of the present invention, so that the present application does not have any technical significance, and any modification of the structure, change of the ratio relationship, or adjustment of the size should still fall within the scope of the present application without affecting the function and the achievable purpose of the present application. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", and the like used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be considered as the scope of the present invention without substantial changes in the technical content.
Referring to fig. 1 and 2, the present invention provides a steering column with good conductivity, which comprises an upper column tube 2, an upper steering shaft 1 disposed in the upper column tube 2, an upper bearing 3 disposed between the upper column tube 2 and the upper steering shaft 1, a lower column tube 6, a lower steering shaft 5 disposed in the lower column tube 6, and a lower bearing 7 disposed between the lower column tube 6 and the lower steering shaft 5, wherein the lower end of the upper steering shaft 1 is sleeved on the upper end of the lower steering shaft 5 or the upper end of the lower steering shaft 5 is sleeved on the lower end of the upper steering shaft 1, the shaft positioned inside is taken as an inner connecting shaft, the shaft positioned outside is taken as an outer connecting shaft, a plastic spline 10 is injected on the outer peripheral wall of the inner connecting shaft, the outer connecting shaft is sleeved on the plastic spline 10, the electric conduction metal sheet 11 is further included, a conduction notch is arranged on the plastic spline 10, the conductive metal piece 11 is installed in the conduction notch, and the conductive metal piece 11 is kept in contact with both the lower steering shaft 5 and the upper steering shaft 1. Referring to fig. 1 and 2, in the present embodiment, the lower end of the upper steering shaft 1 is sleeved on the upper end of the lower steering shaft 5, the upper end of the lower steering shaft 5 is located in the upper steering shaft 1 and is an inner connecting shaft, and the plastic spline 10 is injection-molded on the upper end of the lower steering shaft 5. In other embodiments, when the upper end of the lower steering shaft 5 is sleeved on the lower end of the upper steering shaft 1, that is, the lower end of the upper steering shaft 1 is located in the lower steering shaft 5 and is an inner shaft, the plastic spline 10 is injection-molded on the lower end of the upper steering shaft 1. The upper column tube 2, the upper steering shaft 1, the upper bearing 3, the lower column tube 6, the lower steering shaft 5 and the lower bearing 7 are all made of metal with better electrical conductivity.
The utility model relates to a steering column is the improvement on current traditional steering column, switches on the notch through setting up on plastic spline 10, and the size and the position that switch on the notch can be confirmed according to actual conditions, the notch that switches on plastic spline 10, specifically, the accessible remains this department and does not mould plastics and form and switch on the notch in the manufacturing process of moulding plastics. Taking the steering column in this embodiment as an example, before last steering spindle 1 and lower steering spindle 5 assemble, install conductive metal piece 11 in switching on the notch, then go up steering spindle 1 and lower steering spindle 5 and cup joint the assembly, go up steering spindle 1 and cup joint on plastic spline 10, guarantee that conductive metal piece 11 all keeps in contact with lower steering spindle 5 and last steering spindle 1, and preferably, conductive metal piece 11 all looks butt with the edge that switches on the notch, avoid conductive metal piece 11 to appear moving in switching on the notch, further guarantee conductive metal piece 11's stability. Therefore, when the steering column works, the conductive path of the upper steering shaft 1, the upper bearing 3 and the upper column tube 2 is provided, the lower steering shaft 5 and the upper steering shaft 1 are kept in a conductive state through the conductive metal sheet 11, namely, through the arrangement of the conductive metal sheet 11, a conductive path is added: the steering column comprises an upper steering shaft 1, a conductive metal sheet 11, a lower steering shaft 5, a lower bearing 7 and a lower column tube 6, and has two conductive paths, so that the conductive performance of the steering column is improved. In addition, in the use process of the steering column, the position of the conductive metal sheet 11 is stable and reliable, and the stability and reliability of the conductivity of the steering column are ensured.
Referring to fig. 1 and 2, as a preferred design, an upper ring spline ring and a lower ring spline ring are arranged on the outer peripheral wall of the inner connecting shaft, a ring groove is arranged between the two rings of splines, the spline rings are formed by annularly arranging a plurality of raised splines, the plastic spline 10 is injected on the two rings of spline rings and the ring groove, and the communication notch is formed in the ring groove. In the embodiment, referring to fig. 2, an upper spline ring and a lower spline ring are arranged on the outer peripheral wall of the upper end of the lower steering shaft 5, the upper spline ring is close to the upper end of the lower steering shaft 5, the lower spline ring is at a proper distance from the upper spline ring, an annular groove is formed between the upper spline ring and the lower spline ring, the two spline rings and the annular groove are covered by the area of the injection molding plastic spline 10, the spline rings can ensure that the plastic spline 10 is firmly attached to the surface of the shaft, and the stability of the injection molding plastic spline 10 is improved. The plastic spline 10 has a large thickness in the ring groove, and because the conduction notch is arranged at the ring groove, the conductive metal sheet 11 is positioned in the ring groove and has a large installation space, the volume of the conductive metal sheet 11 can be large, the contact area is increased, the conductive performance is improved, and in addition, the installation of the conductive metal sheet 11 can be more stable.
As a preferable design, in the present embodiment, referring to fig. 2, the conductive metal piece 11 is a metal reed which is in a compressed state between the lower steering shaft 5 and the upper steering shaft 1. Before the upper steering shaft 1 and the lower steering shaft 5 are assembled, when the metal reed is positioned in the conduction notch, the metal reed is higher than the plastic spline 10 in a free state by a small amount, so that the metal reed is in a compression state after the assembly, and the metal reed can be always kept in contact with the lower steering shaft 5 and the upper steering shaft 1.
The utility model discloses an among the steering column, the quantity of electrically conductive sheetmetal 11 can set up according to actual conditions, can be one, also can be a plurality of, when an electrically conductive sheetmetal 11 can satisfy the requirement, can only set up one, reduces the institutional advancement to plastic spline 10, convenient manufacturing, and is with low costs. When a plurality of conductive metal sheets 11 are needed, the number of the conducting notches on the plastic spline 10 is multiple, and each conducting notch is internally provided with the conductive metal sheet 11, so that good conduction between the upper steering shaft 1 and the lower steering shaft 5 can be ensured, when one or more conductive metal sheets 11 break down, the upper steering shaft 1 and the lower steering shaft 5 can still be kept in conduction, and the working stability of the steering column is improved.
The utility model discloses a steering column, through setting up electrically conductive sheetmetal 11, overcome current commonly used last steering spindle 1 and lower steering spindle 5 cooperation non-conductive problem, increased this electric conduction path through lower bearing 7 for steering column has good electric conductive property, can increase the electrically conductive route of loudspeaker ground connection with this, improves the stability of ground connection. And the steering column has simple structure and stable and reliable work, and does not bring contact noise and has low production cost compared with the scheme of using a conductive bearing.
To sum up, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (5)
1. The utility model provides a steering column that electric conductive property is good, includes upper column tube (2), be arranged in upper steering shaft (1) of upper column tube (2), be arranged in upper bearing (3) between upper column tube (2) and upper steering shaft (1), lower column tube (6), be arranged in lower steering shaft (5) of lower column tube (6), be arranged in lower column tube (6) and lower bearing (7) between lower steering shaft (5), its characterized in that: go up steering spindle (1) lower extreme suit steering spindle (5) upper end under or steering spindle (5) upper end suit is at last steering spindle (1) lower extreme, and the axle that is located the inside is marked as the internal connection axle, is located the axle of outside and is marked as the external connection axle, it has moulded plastics plastic spline (10) to mould plastics on the periphery wall of internal connection axle, external bushing is on plastic spline (10), still includes electrically conductive sheetmetal (11), the notch that switches on has been seted up on plastic spline (10), electrically conductive sheetmetal (11) are installed in the notch that switches on, electrically conductive sheetmetal (11) all keep in contact with lower steering spindle (5) and last steering spindle (1).
2. The steering column of claim 1, wherein: two rings of spline rings about being equipped with on the periphery wall of internal connection axle and have the annular between two rings of splines, the spline ring is arranged and is constituted along the hoop by a plurality of splines, plastics spline (10) are moulded plastics on two rings of spline rings and annular, it sets up in annular department to switch on the notch.
3. The steering column of claim 1, wherein: the conductive metal sheet (11) is abutted to the edge of the conducting notch.
4. The steering column of claim 1, wherein: the conductive metal sheet (11) is a metal reed, and the metal reed is in a compressed state between the lower steering shaft (5) and the upper steering shaft (1).
5. The steering column of claim 1, wherein: the conducting notches on the plastic spline (10) are multiple, and each conducting notch is internally provided with a conducting metal sheet (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921956029.1U CN211308705U (en) | 2019-11-13 | 2019-11-13 | Steering column with good conductivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921956029.1U CN211308705U (en) | 2019-11-13 | 2019-11-13 | Steering column with good conductivity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211308705U true CN211308705U (en) | 2020-08-21 |
Family
ID=72055372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921956029.1U Active CN211308705U (en) | 2019-11-13 | 2019-11-13 | Steering column with good conductivity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211308705U (en) |
-
2019
- 2019-11-13 CN CN201921956029.1U patent/CN211308705U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20230131 Granted publication date: 20200821 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20240108 Granted publication date: 20200821 |
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| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20240227 Granted publication date: 20200821 |