CN210633233U - Worm wheel assembling mechanism of single-gear electric steering gear - Google Patents
Worm wheel assembling mechanism of single-gear electric steering gear Download PDFInfo
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- CN210633233U CN210633233U CN201921111496.4U CN201921111496U CN210633233U CN 210633233 U CN210633233 U CN 210633233U CN 201921111496 U CN201921111496 U CN 201921111496U CN 210633233 U CN210633233 U CN 210633233U
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- threaded sleeve
- steering gear
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Abstract
The utility model relates to the technical field of automobile steering system assembly, in particular to a worm wheel assembly mechanism of a single-gear electric steering gear, a press is fixed on a frame, a fixing mechanism is fixed on the table-board of the frame, a sleeve fixing mandrel is tightly clamped at the end part of a pressure head of the press, a threaded sleeve is sleeved on the sleeve fixing mandrel, an auxiliary pressure head is sleeved on the outer edge of the threaded sleeve, and a fixing cavity of the fixing mechanism is opposite to the pressure head of the press; the auxiliary pressure head is in a T-shaped circular truncated cone shape, and a U-shaped opening is formed in the auxiliary pressure head; the external diameter of threaded sleeve is less than the size of the internal spline addendum circle of worm wheel, the utility model discloses the assembly difficulty of single-tooth electric steering machine appearance piece has been solved effectively, utilizes steering gear's root screw to impress the worm wheel in steering gear to the axial clearance of having avoided steering gear and input shaft changes.
Description
Technical Field
The utility model relates to an automobile steering system assembles technical field, and specific saying is a worm wheel assembly devices of single-gear electric steering.
Background
In 2018, a company introduced a novel single-gear electric steering gear platform, and the assembly difficulty of the steering gear structure of the type was that a worm gear was installed in a steering gear. In the traditional process of assembling the worm gear into the steering gear, the input shaft is required to be supported in a stressed mode, and the mode easily causes the change of the axial clearance between the steering gear and the input shaft, so that the characteristics of a product are influenced.
Therefore, it is necessary to design an assembling mechanism of a single-gear electric power steering gear, which presses a worm wheel into a steering gear by using a root thread of the steering gear.
Disclosure of Invention
The utility model discloses broken through prior art's a difficult problem, designed an utilize steering gear's root screw to impress steering gear's single-tooth wheel electric steering machine assembly devices with the worm wheel.
In order to achieve the above object, the utility model discloses a worm wheel assembly devices of single-gear electric steering machine, including press, frame, fixed establishment, its characterized in that: the press is fixed on the frame by using a fixing device, a fixing mechanism is fixed on the table top of the frame, a sleeve fixing mandrel is tightly clamped at the end part of a pressing head of the press, a threaded sleeve is sleeved on the sleeve fixing mandrel, an auxiliary pressing head is sleeved at the outer edge of the threaded sleeve, and a fixing cavity of the fixing mechanism is opposite to the pressing head of the press; the auxiliary pressure head is in a T-shaped circular truncated cone shape, and a U-shaped opening is formed in the auxiliary pressure head; the outer diameter of the threaded sleeve is smaller than the addendum circle of the internal spline of the worm wheel.
The threaded sleeve is internally provided with three sections of cavities, namely a first cavity, a second cavity and a third cavity from bottom to top in sequence, wherein the inner diameter of the first cavity is larger than that of the second cavity, and the inner diameter of the second cavity is larger than that of the third cavity.
The width of the U-shaped opening is larger than the outer diameter of the threaded sleeve.
The auxiliary pressure head consists of an inner pressure head and an outer pressure head, and the inner pressure head and the outer pressure head are integrally formed.
Compared with the prior art, the utility model, solved the assembly difficult point of single-gear electric steering machine appearance piece effectively, utilized steering gear's root screw to impress the worm wheel in steering gear to the axial clearance of having avoided steering gear and input shaft changes.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is the installation view of the middle threaded sleeve, the auxiliary pressure head and the sleeve fixing mandrel of the present invention.
Fig. 3 is a top view of the auxiliary ram of the present invention.
Fig. 4 is a cross-sectional view of the auxiliary ram of the present invention.
Fig. 5 is a schematic structural view of the middle threaded sleeve of the present invention.
Fig. 6 is a schematic diagram of the embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1-5, the utility model discloses a worm gear assembly devices of single-gear electric steering gear, including press, frame, fixed establishment, press 1 utilizes fixing device to fix on frame 2, is fixed with fixed establishment 3 on the mesa of frame 2, and the tip of the pressure head of press 1 closely presss from both sides and is equipped with sleeve fixed dabber 4, and the sleeve fixed dabber 4 is overlapped and is equipped with threaded sleeve 5, and the outer fringe cover of threaded sleeve 5 is equipped with supplementary pressure head 6, the fixed chamber of fixed establishment 3 is relative with the pressure head of press 1; the auxiliary pressure head 6 is in a T-shaped circular truncated cone shape, and the auxiliary pressure head 6 is provided with a U-shaped opening 7, so that the auxiliary pressure head can be conveniently put in before press mounting and taken out after press mounting; the external diameter of the threaded sleeve 5 is smaller than the size of the addendum circle of the internal spline of the worm gear, so that the sleeve can lock the threads at the root of the steering gear conveniently.
In addition, because the addendum circle of the steering gear root thread is very close to the internal spline addendum circle of the worm wheel, the wall thickness of the threaded sleeve is very thin, and because the threaded sleeve is mounted on the sleeve fixing mandrel, the internal thread of the threaded sleeve needs to bear 3-4 KN of worm wheel press-in force, so DC53 is selected as the material of the threaded sleeve.
The toughness of DC53 is more prominent in cold work die steel, and the tool made of DC53 has less cracks and crazes and can bear larger pulling and pressing force.
The utility model discloses be equipped with the three-section cavity in the well thread bush 5, from bottom to top be first cavity 8, second cavity 9 and third cavity 10 in proper order, the internal diameter of first cavity 8 is greater than the internal diameter of second cavity 9, and the internal diameter of second cavity 9 is greater than the internal diameter of third cavity 10.
The utility model discloses well U type opening 7's width is greater than threaded sleeve 5's external diameter.
The utility model discloses well supplementary pressure head 6 comprises interior pressure head 11 and outer pressure head 12, and is integrated into one piece between interior pressure head 11 and the outer pressure head 12, and this kind of supplementary pressure head can make things convenient for taking out after steering gear's clamping and the pressure equipment.
Referring to fig. 1 and 6, in specific implementation, the worm wheel is pre-pressed to the root thread of the steering gear manually, then the input shaft is inserted into the fixing mechanism, the steering gear is lifted to a position close to the height of the threaded sleeve by using a rocking handle 13 through a worm and gear principle, the threaded sleeve is screwed and locked to the root thread of the steering gear, the auxiliary pressure head is placed on the worm wheel, the worm wheel is pressed into the steering gear in place by pressing a hydraulic pump handle 14 through a manual hydraulic press and the auxiliary pressure head, the threaded sleeve is loosened, the fixing mechanism is lowered to the original position by using the rocking handle 13 through the worm and gear principle, and a workpiece is taken down.
Claims (4)
1. The utility model provides a worm wheel assembly devices of single-gear electric steering machine, includes press, frame, fixed establishment, its characterized in that: the pressing machine (1) is fixed on the frame (2) by using a fixing device, a fixing mechanism (3) is fixed on the table top of the frame (2), a sleeve fixing mandrel (4) is tightly clamped at the end part of a pressing head of the pressing machine (1), a threaded sleeve (5) is sleeved on the sleeve fixing mandrel (4), an auxiliary pressing head (6) is sleeved on the outer edge of the threaded sleeve (5), and a fixing cavity of the fixing mechanism (3) is opposite to the pressing head of the pressing machine (1); the auxiliary pressure head (6) is in a T-shaped circular truncated cone shape, and a U-shaped opening (7) is formed in the auxiliary pressure head (6); the outer diameter of the threaded sleeve (5) is smaller than the size of the addendum circle of the internal spline of the worm wheel.
2. The worm gear fitting mechanism of a single-gear electric power steering gear according to claim 1, characterized in that: the threaded sleeve (5) is internally provided with three sections of cavities, namely a first cavity (8), a second cavity (9) and a third cavity (10) from bottom to top in sequence, the inner diameter of the first cavity (8) is larger than that of the second cavity (9), and the inner diameter of the second cavity (9) is larger than that of the third cavity (10).
3. The worm gear fitting mechanism of a single-gear electric power steering gear according to claim 1, characterized in that: the width of the U-shaped opening (7) is larger than the outer diameter of the threaded sleeve (5).
4. The worm gear fitting mechanism of a single-gear electric power steering gear according to claim 1, characterized in that: the auxiliary pressure head (6) is composed of an inner pressure head (11) and an outer pressure head (12), and the inner pressure head (11) and the outer pressure head (12) are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921111496.4U CN210633233U (en) | 2019-07-16 | 2019-07-16 | Worm wheel assembling mechanism of single-gear electric steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921111496.4U CN210633233U (en) | 2019-07-16 | 2019-07-16 | Worm wheel assembling mechanism of single-gear electric steering gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210633233U true CN210633233U (en) | 2020-05-29 |
Family
ID=70793782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921111496.4U Active CN210633233U (en) | 2019-07-16 | 2019-07-16 | Worm wheel assembling mechanism of single-gear electric steering gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210633233U (en) |
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2019
- 2019-07-16 CN CN201921111496.4U patent/CN210633233U/en active Active
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