Locking device for an adjustment unit of a motor vehcile seat
a technology for locking devices and motor vehicles, which is applied in the direction of vehicle components, vehicle arrangements, domestic applications, etc., can solve the problems of no longer being able to mount, and achieve the effect of convenient mounting
Inactive Publication Date: 2009-06-11
C ROB HAMMERSTEIN GMBH & CO KG
View PDF6 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
"The locking device described in this patent is a secure and effective way to prevent accidental movement of a locking part in a crash. The device includes a control contour with a flat bight portion, an enabling inclined portion, a transition region, and a retaining inclined portion. The abutment end of the spring fits against the control contour and can move along it. The locking part is securely engaged with the toothed bar and cannot bounce back. After an accident, the locking device must be set back but it remains in secure engagement. The device is easy to manufacture, can be used with different types of springs, and provides precise and repeatable engagement with the toothed bar."
Problems solved by technology
As a result, secure engagement is achieved on the one side; on the other side, the locking part is prevented from elastically bouncing back from the toothed bar, which is no longer possible.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0026]Of an actually known motor vehicle seat, only the essential elements are shown in the figures. There is shown a seat carrier 20 that is carried by an underframe. In a first exemplary embodiment according to the FIGS. 1 through 4, the underframe is formed by one pair of rails with a top rail 22 and a bottom rail 24 as well as by a rear rocker 28 and a front rocker 30. The bottom rail 24 is provided to be fastened to an underbody (not shown) of a motor vehicle. The seat carrier 20 carries a seat part 26.
[0027]At the back, the top rail 22 is hinge-linked to the seat carrier 20 through the rear rocker 28. At the front, the top rail 22 is hinge-linked to the seat carrier 20 through the front rocker 30. Generally, a four-bar linkage is formed. It is stopped in a known way through a toothed bar in the form of a arcuate toothed region 32 that is centered with respect to a rear rocker axis. A stopper part, such as a pinion that is rotatable with an eccentric mounting, is associated wit...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A locking device for an adjustment unit of a motor vehicle seat having a toothed bar, a locking part cooperating with the toothed bar, a spring that abuts the locking part and a base part. The locking part comprises at least one tooth for engaging the toothed bar. A mass body is associated with the locking part and is hinged to the base part for pivotal movement about an axis. The mass body has a control contour which comprises a) a flat bight portion with a base, b) at least one enabling inclined portion adjoining the bight portion, c) a transition region adjoining the enabling inclined portion and d) one retaining inclined portion adjoining the transition region. The spring fits at one abutment end against the base of the control contour in the normal position of the locking part; the abutment end is capable of moving along the control contour.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to German Application No. DE 10 2007 059 012.3, filed Dec. 6, 2007, which is hereby incorporated by reference in its entirety as part of the present disclosure.BACKGROUND OF THE INVENTION[0002]The invention relates to a locking device for an adjustment unit of a motor vehicle seat, in particular for an adjustment unit in the form of a hinge mounting, with a toothed bar, with a locking part cooperating with this toothed bar and with a spring that abuts the locking part and a base part, said locking part comprising at least one tooth for engagement into the tooth bar and a mass body being associated with said locking part, said mass body being hinged to the base part for pivotal movement about an axis. Such a locking device is known from U.S. Pat. No. 5,882,080.[0003]The locking device works depending on acceleration and stops the adjustment unit in the event of a crash. In case of accelerations that are low...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(United States)
IPC IPC(8): A47C31/00
CPCB60N2/433B60N2/43
Inventor BENEKER, WILFRIEDBECKER, BURCKHARD
Owner C ROB HAMMERSTEIN GMBH & CO KG