CN112356912A - Pneumatic locking wedge type steering column - Google Patents
Pneumatic locking wedge type steering column Download PDFInfo
- Publication number
- CN112356912A CN112356912A CN202011364843.1A CN202011364843A CN112356912A CN 112356912 A CN112356912 A CN 112356912A CN 202011364843 A CN202011364843 A CN 202011364843A CN 112356912 A CN112356912 A CN 112356912A
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- China
- Prior art keywords
- steering column
- pneumatic
- rack
- base
- wedge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
- B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
- B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
- B62D1/184—Mechanisms for locking columns at selected positions
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering Controls (AREA)
Abstract
The invention belongs to the technical field of steering columns of commercial vehicles and discloses a pneumatic locking wedge type steering column which comprises a base and a wedge block, wherein the base is fixedly arranged on a vehicle body and is provided with a first rack; the wedge block is fixedly arranged at the output end of the pneumatic driving mechanism, a second rack along the inclined direction of the inclined plane is arranged on the inclined plane of the wedge block, a third rack is arranged on the vertical plane opposite to the inclined plane, the third rack is meshed with the arc gear on the steering column pipe, and the pneumatic driving mechanism is configured to drive the wedge block to move so that the second rack is meshed with the first rack to lock the steering column pipe or is disengaged to unlock the steering column pipe. According to the invention, the pneumatic driving mechanism is used as a power source, the wedge block and the attached second rack and third rack are used as a locking structure and a locking kinematic pair, the tooth meshing force is higher, higher holding force can be provided, the manufacturing cost is lower, the wedge block can supplement the gap problem caused by abrasion in real time, and the problem of clamping force attenuation is solved.
Description
Technical Field
The invention relates to the technical field of steering columns of commercial vehicles, in particular to a pneumatic locking wedge type steering column.
Background
In the driving process of a vehicle, it is very important for the driving safety and the comfort of the driver that the driver has a good driving posture, and the stable work of the steering column adjusting mechanism plays an important role. The steering column adjusting mechanism commonly used in the prior art adopts pneumatic steering adjustment, the adjusting and locking device adopts pneumatic unlocking and locking, but the adjusting and locking device adopts a relatively complex friction plate and a locking mechanism in the form of the friction plate, the manufacturing cost is higher, a more precise processing form is required, and meanwhile, the friction plate is continuously worn in the using process, and the hidden danger of clamping force attenuation exists.
Disclosure of Invention
The invention aims to provide a pneumatic locking wedge type steering column, which aims to solve the problem that the clamping force of a pneumatic locking device of the steering column is attenuated due to the abrasion of a friction plate.
In order to achieve the purpose, the invention adopts the following technical scheme:
a pneumatic locking wedge steering column, comprising:
the base is fixedly arranged on the vehicle body, and a first rack is arranged on the base;
the wedge block is fixedly arranged at the output end of a pneumatic driving mechanism, a second rack arranged along the inclined direction of the inclined plane is arranged on the inclined plane of the wedge block, a third rack is arranged on the vertical plane opposite to the inclined plane and meshed with an arc gear on a steering column tube, and the pneumatic driving mechanism is configured to drive the wedge block to move so that the second rack is meshed with the first rack to lock the steering column tube or is disengaged to unlock the steering column tube.
Optionally, the pneumatic locking wedge steering column further comprises a synchronization frame, one end of the synchronization frame is connected with the pneumatic driving mechanism, and the other end of the synchronization frame is connected with the steering column tube.
Optionally, the pneumatic locking wedge steering column further comprises a return spring, one end of the return spring is connected with the base, the other end of the return spring is connected with the synchronous frame, and the one end of the return spring is located at a high position relative to the other end of the return spring.
Optionally, the synchronizer is disposed on the base and slidably connected with the base.
Optionally, the pneumatic locking wedge steering column further comprises an adjusting spring, one end of the adjusting spring is connected with the synchronous frame, and the other end of the adjusting spring is connected with the steering column tube.
Optionally, the pneumatic drive mechanism is movably connected to the base.
Optionally, the pneumatic locking wedge steering column further comprises a support frame, one end of the support frame is rotatably connected with the pneumatic driving mechanism, and the other end of the support frame is slidably connected with the base.
Optionally, the wedge is a U-shaped piece with an upward opening, the bottom plate of the wedge is connected to the output end of the pneumatic driving mechanism, one end of each of the two side plates is an inclined surface, the inclined surface is provided with a pair of second racks, the other end of each of the two side plates is a vertical surface, and the vertical surface is provided with a pair of third racks.
Optionally, the base is a U-shaped member with a downward opening, the base cover is disposed on the steering column tube, two synchronizing frames are provided, the two synchronizing frames are respectively disposed on two side plates of the base and connected through a cross beam, and two ends of the cross beam are respectively connected to the two side plates of the base in a sliding manner; the first rack is provided with a pair of racks which are arranged on the inner side of the top plate of the base in parallel.
Optionally, the pneumatic drive mechanism is a pneumatic cylinder.
The invention has the beneficial effects that:
according to the pneumatic locking wedge type steering column, the pneumatic driving mechanism is used as a power source for unlocking and locking, the wedge block and the attached second rack and third rack are used as a locking structure and a locking kinematic pair, and the meshing force of the teeth is larger in the meshing force aspect, so that larger holding force can be provided. The wedge block and the manufacturing cost for processing the second rack and the third rack on the wedge block are low, and the wedge block mechanism can supplement the gap problem caused by abrasion in real time, so that the steering column mechanism is more stable and reliable, and the problem of clamping force attenuation caused by abrasion of the friction plate in the adjusting mechanism adopting the friction plate in the prior art is solved.
In addition, the rotating center of the steering column tube does not need to be designed to be larger due to the fact that the holding force is too large and a longer force arm is needed, so that the idle reduction can be effectively saved, the angle adjustment can be optimized, and the angle adjustment can be effectively increased. The pneumatic locking wedge type steering column provided by the invention has a compact structure and a small volume, so that the space can be effectively saved for peripheral parts, for example, the pneumatic locking wedge type steering column can be used for increasing the area of an instrument and displaying more vehicle information on an instrument panel.
Drawings
Fig. 1 is a side view angle schematic view of a pneumatic locking wedge steering column of the present invention;
FIG. 2 is a side view schematic of a pneumatically locked wedge steering column of the present invention with the base removed;
FIG. 3 is a schematic front view of a pneumatically locked wedge steering column of the present invention with the base removed;
FIG. 4 is a schematic structural view of a wedge block in a pneumatic locking wedge type steering column according to the present invention;
fig. 5 is a schematic view illustrating a structure of a base in a pneumatic locking wedge type steering column of the present invention.
In the figure:
100. a steering column tube; 1001. a circular arc gear;
1. a base; 11. a first rack; 12. a first chute; 13. a circular hole; 14. a second chute; 2. a wedge block; 21. a second rack; 22. a third rack; 3. a pneumatic drive mechanism; 4. a synchronous frame; a cross member 41; 5. a return spring; 6. adjusting the spring; 7. a support frame.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The invention provides a pneumatic locking wedge type steering column, which comprises a base 1 and a wedge block 2 as shown in figures 1-3, wherein the base 1 is fixedly arranged on a vehicle body, and a first rack 11 is arranged on the base; the wedge block 2 is fixedly arranged at the output end of the pneumatic driving mechanism 3, a second rack 21 arranged along the inclined direction of the inclined plane is arranged on the inclined plane of the wedge block 2, a third rack 22 is arranged on the vertical plane opposite to the inclined plane, the third rack 22 is meshed with a circular arc gear 1001 on the steering column pipe, and the pneumatic driving mechanism 3 is configured to drive the wedge block 2 to move up and down so that the second rack 21 is meshed with the first rack 11 to lock the steering column pipe or is disengaged to unlock the steering column pipe.
It should be noted that in the present embodiment, the first rack 11, the second rack 21, the third rack 22, and the circular-arc gear 1001 are straight teeth, and it can be understood that, in the initial locking state, the circular-arc gear 1001 on the column tube 100 is engaged with the third rack 22 on the wedge 2, and at the same time, the second rack 21 on the wedge 2 is engaged with the first rack 11 on the base 1, and the pneumatic driving mechanism 3 provides stable locking pneumatic power for the wedge 2. When a driver needs to adjust the position of the steering wheel and presses the pneumatic switch unlocking button, the output end of the pneumatic driving mechanism 3 unloads the pneumatic force acting on the wedge block 2, the steering column tube 100 rotates to enable the arc gear 1001 at the tail end to be meshed with the third rack 22 for transmission to achieve adjustment of the height and the angle of the steering wheel, finally, the pneumatic switch unlocking button is stopped being pressed, and the pneumatic driving mechanism 3 drives the wedge block 2 to be locked on the first rack 11 again.
According to the pneumatic locking wedge type steering column, the pneumatic driving mechanism 3 is used as a power source for unlocking and locking, the wedge block 2 and the attached second rack 21 and third rack 22 are used as a locking structure and a locking kinematic pair, and the meshing force is larger in the aspect of meshing force, so that larger holding force can be provided. The wedge block 2 and the manufacturing cost for processing the second rack 21 and the third rack 22 on the wedge block are low, and the wedge block 2 can supplement the gap problem caused by abrasion in real time, so that the steering column mechanism is more stable and reliable, and the problem of clamping force attenuation caused by abrasion of friction plates in an adjusting mechanism adopting the friction plates in the prior art is solved.
In addition, the rotation center of the steering column tube 100 does not need to be designed to be larger due to the fact that the holding force is too large and a longer force arm is needed, so that the idle reduction can be effectively saved, the angle adjustment can be optimized, and the angle adjustment can be effectively increased. The pneumatic locking wedge type steering column provided by the invention has a compact structure and a small volume, so that the space can be effectively saved for peripheral parts, for example, the pneumatic locking wedge type steering column can be used for increasing the area of an instrument and displaying more vehicle information on an instrument panel.
Optionally, the pneumatic locking wedge steering column further comprises a synchronization frame 4, one end of the synchronization frame 4 is connected to the pneumatic driving mechanism 3, and the other end is connected to the steering column tube 100.
As shown in fig. 2, when the pneumatic driving mechanism 3 drives the wedge 2 to move up and down, the synchronization frame 4 can keep the position of the pneumatic driving mechanism 3 fixed relative to the column tube 100, and at this time, the pneumatic driving mechanism 3 rotates relative to the synchronization frame 4 to match the meshing transmission between the circular arc gear 1001 and the third rack 22.
Optionally, the pneumatic locking wedge steering column further comprises a return spring 5, one end of the return spring 5 is connected with the base 1, the other end of the return spring is connected with the synchronization frame 4, and one end of the return spring is at a high position relative to the other end of the return spring.
As shown in fig. 1, one end of the return spring 4 is disposed at a high position and connected to the base 1, and the other end is disposed at a low position and connected to the synchronous frame 4, and since the pneumatic driving mechanism 3 and the steering column tube 100 are connected to the synchronous frame 4, it can be understood that the return spring 4 can overcome partial gravity of the steering column tube 100 and the pneumatic driving mechanism 3, so that the adjustment process of the steering column tube 100 is light and smooth.
Optionally, the synchronization frame 4 is disposed on the base 1 and slidably connected with the base 1.
As shown in fig. 1, 2 and 5, the base 1 is provided with a second sliding groove 14, the synchronizing frame 4 is slidably connected in the second sliding groove 14, and the synchronizing frame 4 slides on the base 1 when the steering column pipe 100 rotates or moves, so as to ensure the stability of the steering column pipe 100.
Optionally, the pneumatic locking wedge steering column further comprises an adjusting spring 6, one end of the adjusting spring 6 is connected to the synchronizer 4, and the other end is connected to the steering column tube 100.
As shown in fig. 3, two adjusting springs 6 are symmetrically arranged on two sides of the steering column tube 100 along the long axis, one end of each adjusting spring is connected with the synchronization frame 4, the other end of each adjusting spring is connected with the steering column tube 100, and meanwhile, as can be seen from the above embodiments, the synchronization frame 4 is also connected with the pneumatic driving mechanism 3 and the steering column tube 100, so that it can be understood that the synchronization frame 2 is arranged in the present invention to fix the relative position relationship among the pneumatic driving mechanism 3, the steering column tube 100 and the adjusting springs 6, and meanwhile, the synchronization frame 2 is slidably connected to the base 1, so that the angle adjusting force of the steering column tube 100 can be effectively controlled to be consistent at any position in the up-down process, and meanwhile, the synchronization frame 4 also ensures that the stroke of the pneumatic driving mechanism 3 at any position is consistent, so that the opening and locking time of the steering column tube 100 is consistent.
Optionally, a pneumatic drive mechanism 3 is movably connected to the base 1.
It can be understood that when the circular arc gear 1001 is in meshing transmission relative to the third rack 22, the wedge 2 needs to move along with the third rack, and the movement of the wedge is limited by the synchronizing frame 4, so that the wedge 2 and the pneumatic driving cylinder 3 can only rotate to realize transmission, and therefore, the pneumatic driving mechanism 3 is movably connected to the base 1 to realize rotation and movement adjustment of the steering column tube 100.
Optionally, the pneumatic locking wedge steering column further comprises a support frame 7, one end of the support frame 7 is rotatably connected with the pneumatic driving mechanism 3, and the other end of the support frame 7 is slidably connected with the base 1.
With reference to fig. 1, 2 and 5, one end of the supporting frame 7 is rotatably connected to the pneumatic driving mechanism 3, the other end of the supporting frame passes through the first sliding slot 12 on the base 1, and then a blocking piece 71 is arranged, the supporting frame 7 is slidably connected to the base 1 through a nut 72, one end of the supporting frame 7 slides relative to the base 1, and the other end of the supporting frame 7 can rotate relative to the pneumatic driving mechanism 3 to match the movement of the wedge 2.
Optionally, as shown in fig. 2 and 4, in this embodiment, the wedge 2 is a U-shaped member with an upward opening, a bottom plate of the wedge 2 is connected to an output end of the pneumatic driving mechanism 3, one end of each of the two side plates is an inclined surface, the inclined surface is provided with a pair of second racks 21, the other end of each of the two side plates is a vertical surface, and the vertical surface is provided with a pair of third racks 22. Adopt the U-shaped spare can alleviate the whole weight of voussoir 2, set up a pair of second rack 21 and a pair of third rack 22 respectively on the board of both sides and all be the mutual parallel arrangement respectively, can guarantee to move or rotate in a definite plane of steering column pipe 100, avoid taking place to vert, arouse positional deviation. Wherein the inclination angle of the second rack 21 on the inclined plane needs to be reasonably designed in advance according to the specific structural clearance and the relative position with the pneumatic driving mechanism 3. Meanwhile, as the wedge-shaped inclined surface structure is adopted, the locking retaining force of the wedge block 2 can be controlled through the stroke of the pneumatic driving mechanism 3, and the attenuation of the retaining force is avoided.
Optionally, the base 1 is a U-shaped member with a downward opening, the base 1 is covered on the steering column tube 100, two synchronization frames 4 are provided, the two synchronization frames 4 are respectively provided on two side plates of the base 1 and connected through a cross beam 41, and two ends of the cross beam 41 are respectively connected to the two side plates of the base 1 in a sliding manner; the first rack 11 is provided with a pair of racks parallel to each other and disposed inside the top plate of the base 1.
As shown in fig. 5, the top plate of the base 1 is provided with a first sliding chute 12 for slidably connecting the supporting frame 7; round holes 13 are arranged at two ends of the top plate and are used for detachably connecting the first racks 11 at the inner side of the bottom plate; the two side plates are respectively provided with three second sliding grooves 14 for slidably connecting three beams 41, as shown in fig. 3, two ends of the three beams 41 are respectively connected with two synchronous frames 4, wherein, the first beam 41 is arranged through the pneumatic driving mechanism 3 and is fixedly connected, the second beam 41 is arranged through the steering column tube 100 and is fixedly connected, the third beam 41 is connected with two adjusting springs 6, the other ends of the two adjusting springs 6 are connected with the steering column tube 100 and are respectively arranged at two sides of the long shaft of the steering column tube 100, the tension springs of the adjusting springs 6, when the steering column tube 100 rotates relative to the base 1, the synchronous frame 4 slides relative to the base 1 and drives the steering column tube 100 to move under the action of the elastic force of the spring through the adjusting spring 6, therefore, the angle adjusting force of the steering column tube 100 can be effectively controlled, and the stroke of the pneumatic driving mechanism 3 is ensured to be consistent in the movement process of the steering column tube 100. Wherein, the end of the beam 41 sequentially penetrates through the side plate of the base 1 and the synchronous frame 4 and is locked by a nut, so as to connect the synchronous frame 4 on the base 1 in a sliding way. In this embodiment, the synchronizing frame 4, the return spring 5, the adjusting spring 6, the circular arc gear 1001, the first rack 11, the second rack 21, and the third rack 22 are all symmetrically disposed on both sides of the steering column tube 100 in the long axis direction, so that the stability of the steering column tube 100 in the movement process can be ensured.
Alternatively, the pneumatic drive mechanism 3 is a pneumatic cylinder. The aerodynamic force is used as a power source, and continuous and stable aerodynamic force is provided to ensure the stability of the wedge block 2.
In conclusion, the pneumatic unlocking wedge type steering column provided by the invention can be effectively adjusted and locked in an adjusting range, and the steering column tube 100 can be more smoothly adjusted by adding the return spring 5; the wedge block 2 and the rack locking structure are added, so that the locking is more effective, and the clearance caused by long-term use can be supplemented in real time. Therefore, the driver has better posture and a more comfortable and labor-saving adjusting process, the posture of the driver is ensured, and the driver is more comfortable and reliable, so that the driving safety is ensured.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. 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 (10)
1. A pneumatically locking wedge steering column, comprising:
the vehicle body is characterized by comprising a base (1), wherein the base (1) is fixedly arranged on a vehicle body, and a first rack (11) is arranged on the base (1);
the wedge block (2) is fixedly arranged at the output end of a pneumatic driving mechanism (3), a second rack (21) arranged along the inclined direction of the inclined surface is arranged on the inclined surface of the wedge block (2), a third rack (22) is arranged on the vertical surface opposite to the inclined surface, the third rack (22) is meshed with a circular arc gear (1001) on a steering column tube (100), and the pneumatic driving mechanism (3) is configured to drive the wedge block (2) to move so that the second rack (21) is meshed with the first rack (11) to lock the steering column tube (100) or be disengaged to unlock the steering column tube (100).
2. The pneumatic locking wedge steering column according to claim 1, further comprising a synchronizer (4), wherein one end of the synchronizer (4) is connected to the pneumatic drive mechanism (3) and the other end is connected to the steering column tube (100).
3. Pneumatic locking wedge steering column according to claim 2, characterized in that it further comprises a return spring (5), one end of said return spring (5) being connected to said base (1) and the other end being connected to said synchronization frame (4), and said one end being in a high position with respect to said other end.
4. Pneumatic locking wedge steering column according to claim 2, characterized in that the synchronizer frame (4) is arranged on the base (1) and is in sliding connection with the base (1).
5. Pneumatic locking wedge steering column according to claim 2, characterized in, that it further comprises an adjusting spring (6), which adjusting spring (6) is connected with one end to the synchrotilt (4) and with the other end to the column tube (100).
6. Pneumatic locking wedge steering column according to claim 1, characterized in that the pneumatic drive mechanism (3) is movably connected to the base (1).
7. The pneumatic locking wedge steering column according to claim 6, further comprising a support bracket (7), wherein one end of the support bracket (7) is rotatably connected to the pneumatic driving mechanism (3), and the other end is slidably connected to the base (1).
8. The pneumatic locking wedge steering column according to claim 2, wherein the wedge (2) is a U-shaped piece with an upward opening, the bottom plate of the wedge (2) is connected to the output end of the pneumatic driving mechanism (3), one end of each of the two side plates is an inclined surface, the inclined surface is provided with a pair of the second racks (21), the other end of each of the two side plates is a vertical surface, and the vertical surface is provided with a pair of the third racks (22).
9. The pneumatic locking wedge steering column according to claim 8, wherein the base (1) is a U-shaped member with a downward opening, the base (1) is covered on the steering column tube (100), the number of the synchronization frames (4) is two, the two synchronization frames (4) are respectively arranged on two side plates of the base (1) and connected through a cross beam (41), and two ends of the cross beam (41) are respectively connected to the two side plates of the base (1) in a sliding manner; the first racks (11) are provided with a pair of racks which are parallel to each other and arranged on the inner side of the top plate of the base (1).
10. Pneumatic locking wedge steering column according to claim 1, characterized in that the pneumatic drive mechanism (3) is a pneumatic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011364843.1A CN112356912A (en) | 2020-11-27 | 2020-11-27 | Pneumatic locking wedge type steering column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011364843.1A CN112356912A (en) | 2020-11-27 | 2020-11-27 | Pneumatic locking wedge type steering column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112356912A true CN112356912A (en) | 2021-02-12 |
Family
ID=74535570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011364843.1A Pending CN112356912A (en) | 2020-11-27 | 2020-11-27 | Pneumatic locking wedge type steering column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112356912A (en) |
-
2020
- 2020-11-27 CN CN202011364843.1A patent/CN112356912A/en active Pending
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Application publication date: 20210212 |