CN205226257U - Prevent structure of screw rod rotation under natural state - Google Patents
Prevent structure of screw rod rotation under natural state Download PDFInfo
- Publication number
- CN205226257U CN205226257U CN201521018488.7U CN201521018488U CN205226257U CN 205226257 U CN205226257 U CN 205226257U CN 201521018488 U CN201521018488 U CN 201521018488U CN 205226257 U CN205226257 U CN 205226257U
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- screw rod
- natural state
- cell body
- boss
- gear housing
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Abstract
The utility model relates to a screw rod among the seat actuating mechanism provides a prevent structure of screw rod rotation under natural state. Rotatory this technical problem takes place for the screw rod when how to prevent for the solution that seat actuating mechanism is independent under natural state, provides a technical scheme. This scheme is through set up the cell body on the screw rod to at gearbox casing's mounting hole department installation base, guaranteed that the screw rod does not have the degree of freedom at direction of rotation, even seat actuating mechanism is in independent state, the screw rod can not take place rotatoryly under natural state yet, and before the screw rod dispatches from the factory can not shift in the position of calibration, and the deviation can not take place for position feedback and actual position, can directly use after mechanism's installation, need not to debug again.
Description
Technical field
The utility model relates to seat actuator, particularly relates to the screw rod in seat actuator.
Background technique
Seat actuator all adopts the mode of nut rotary screw (calling screw rod in the following text) straight line motion in T-shaped screw pair to carry out fore and aft motion, and mechanism is arranged in seat, and because screw head and flexible part are fixed, screw rod can not rotate.But when seat actuator independently exists, screw head can not get fixing, screw rod just can rotate freely in gear-box, before screw rod so can be caused to dispatch from the factory, the position of calibration is easily shifted, and then makes position feedback and physical location deviation, and mechanism cannot in direct use after installing.
Seat actuator demarcates the default rear mechanism self of seat and has rotation preventing function to screw rod, thoroughly solves because people during mechanism's independence is the positional deviation caused.Save a large amount of later maintenance time, save cost.
Model utility content
Technical problem to be solved in the utility model is that when how to prevent seat actuator independence, screw rod rotates in its natural state.
For above-mentioned technical problem, the utility model provides a kind of structure preventing screw rod from rotating in its natural state, comprise screw rod and gear housing, gear housing offers a cell body on the periphery of screw rod, gear housing is provided with the boss mated with cell body in the mounting hole of screw rod, boss is stuck in cell body, and the length that boss is arranged in cell body is greater than a pitch of screw rod.
Further, cell body is the keyway of indent, and boss is flat key, and flat key is stuck in keyway, limits screw rod degrees of freedom in a rotational direction.
Further, cell body also can for rising as high as the banks, and rise as high as the banks and cut as " D " shape by the end face of screw rod, boss is " D " shape, and the cambered surface of boss and the hole wall of mounting hole are fitted, and the plane of boss and the hole wall of mounting hole form " D " shape; The plane of screw rod and the plane of boss are fitted, and its degrees of freedom is in a rotational direction limited.
Further, cell body can also be arc groove, and boss is ball, and the hole wall of mounting hole is provided with ball grooves, and ball is arranged in ball grooves.Relatively between screw rod with both balls carry out rolling friction campaign, the degrees of freedom of screw rod sense of rotation is limited by ball.
Further, for the ease of the installation of ball, gear housing is provided with the spline groove be communicated with ball grooves, is provided with tight lifting pin in spline groove, ball is connected with the end face of tight lifting pin.
As seen from the above technical solution, the utility model passes through to offer cell body on screw rod in effective travel, and at the mounting hole place installation base of gear housing, ensure that screw rod in sense of rotation without degrees of freedom, even if seat actuator is in separate state, screw rod also can not rotate in its natural state, before screw rod dispatches from the factory, the position of calibration can not be shifted, can not there is deviation in position feedback and physical location, mechanism can directly use, without the need to debugging after installing again.
Accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described.
Fig. 1 is the schematic diagram of the screw rod disclosed in the utility model embodiment one;
Fig. 2 is the schematic diagram of the gear housing disclosed in the utility model embodiment one;
Fig. 3 is the schematic diagram of the screw rod disclosed in the utility model embodiment two;
Fig. 4 is the schematic diagram of the gear housing disclosed in the utility model embodiment two;
Fig. 5 is the schematic diagram of the screw rod disclosed in the utility model embodiment three;
Fig. 6 is the partial sectional view of the seat actuator disclosed in the utility model embodiment three.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technological scheme in the utility model embodiment is clearly and completely described.
Embodiment one
See Fig. 1 and Fig. 2, seat actuator, comprise screw rod and gear housing, gear housing offers the keyway a1 of an indent on the periphery of screw rod, gear housing is provided with the flat key c1 mated with cell body in the mounting hole b1 of screw rod, flat key is stuck in keyway, and the length that flat key is arranged in keyway is greater than a pitch of screw rod.
Flat key is stuck in keyway, limits screw rod degrees of freedom in a rotational direction.
Embodiment two
See Fig. 3 and Fig. 4, seat actuator, comprise screw rod and gear housing, gear housing offers the a2 that rises as high as the banks on the periphery of screw rod, rise as high as the banks and the end face of screw rod is cut as " D " shape, gear housing is provided with and " D " shape boss c2 mated that rises as high as the banks in the mounting hole b2 of screw rod, and its plane is greater than a pitch of screw rod with the laminating length of plane of rising as high as the banks.The cambered surface of boss and the hole wall of mounting hole are fitted, and the plane of boss and the hole wall of mounting hole form " D " shape.The plane of screw rod and the plane of boss are fitted, and its degrees of freedom is in a rotational direction limited.
Embodiment three
See Fig. 5 and Fig. 6, seat actuator, comprise screw rod 1 and gear housing 2, gear housing offers an arc groove a3 on the periphery of screw rod, gear housing is provided with ball grooves on the hole wall of screw rod mounting hole, be provided with the ball c3 mated with arc groove in ball grooves, and the length that ball is arranged in arc groove is greater than a pitch of screw rod.Relatively between screw rod with both balls carry out rolling friction campaign, the degrees of freedom of screw rod sense of rotation is limited by ball.
For the ease of the installation of ball, gear housing is provided with the spline groove be communicated with ball grooves, is provided with tight lifting pin d3 in spline groove, ball is connected with the end face of tight lifting pin.
To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (5)
1. the structure preventing screw rod from rotating in its natural state, comprise screw rod and gear housing, it is characterized in that, described gear housing offers a cell body on the periphery of screw rod, described gear housing is provided with the boss mated with cell body in the mounting hole of screw rod, described boss is stuck in cell body, and the length that described boss is arranged in described cell body is greater than a pitch of screw rod.
2. a kind of structure preventing screw rod from rotating in its natural state according to claim 1, is characterized in that, described cell body is the keyway of indent, and described boss is flat key.
3. a kind of structure preventing screw rod from rotating in its natural state according to claim 1, it is characterized in that, described cell body is for rising as high as the banks, the end face of screw rod cuts as " D " shape by described rising as high as the banks, described boss is " D " shape, the cambered surface of described boss and the hole wall of described mounting hole are fitted, and the plane of described boss and the hole wall of described mounting hole form " D " shape.
4. a kind of structure preventing screw rod from rotating in its natural state according to claim 1, is characterized in that, described cell body is arc groove, and described boss is ball, and the hole wall of described mounting hole is provided with ball grooves, and described ball is arranged in ball grooves.
5. a kind of structure preventing screw rod from rotating in its natural state according to claim 4, it is characterized in that, described gear housing is provided with the spline groove be communicated with ball grooves, be provided with tight lifting pin in described spline groove, described ball is connected with the end face of described tight lifting pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521018488.7U CN205226257U (en) | 2015-12-10 | 2015-12-10 | Prevent structure of screw rod rotation under natural state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521018488.7U CN205226257U (en) | 2015-12-10 | 2015-12-10 | Prevent structure of screw rod rotation under natural state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205226257U true CN205226257U (en) | 2016-05-11 |
Family
ID=55901324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521018488.7U Active CN205226257U (en) | 2015-12-10 | 2015-12-10 | Prevent structure of screw rod rotation under natural state |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205226257U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110074576A (en) * | 2019-05-21 | 2019-08-02 | 淳安青节电子商务有限公司 | Screw rod is used in a kind of lifting of high security seat |
-
2015
- 2015-12-10 CN CN201521018488.7U patent/CN205226257U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110074576A (en) * | 2019-05-21 | 2019-08-02 | 淳安青节电子商务有限公司 | Screw rod is used in a kind of lifting of high security seat |
| CN110074576B (en) * | 2019-05-21 | 2024-01-19 | 淳安青节电子商务有限公司 | Screw rod for lifting high-safety seat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |