JPS6238040Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in a feeding device for moving automobile seats.

In conventional automobile seat movement feeding devices, the nut assembly is large in size and requires a lot of effort to assemble, as holes are provided in retainers placed on both axial end faces of the nut through elastic members and screwed into the nut assembly. It cost. In addition, since the large nut assembly was placed in a notch in the nut housing, the nut housing also became large.Furthermore, the notch weakened the nut housing, making it necessary to increase the plate thickness of the nut housing, making it expensive. It also had the disadvantage of being heavy.

In this device, the claws on the outer periphery of the retainer are engaged with the nut, and the retainer is held on the axial end surface of the nut via an elastic member for centering to form a nut assembly, and the nut assembly is fitted into a fitting hole provided in a nut housing,
SUMMARY OF THE DISCLOSURE An object of the present invention is to provide a nut assembly structure for a small and lightweight automobile seat moving feeder which eliminates the drawbacks of the above-mentioned conventional devices by eliminating the need for a set screw in the nut assembly and by significantly increasing the strength of the nut housing.

The present invention will be described below with reference to an embodiment shown in the drawings. In Figures 1 to 3, 1 is Nat;
Boss portions 1a, 1a are provided on both end surfaces of the nut 1 in the axial direction.
are formed, and each of the elastic members 2, 2 for centering is arranged. Reference numerals 3 and 3 denote retainers for uniforming the distribution of load on the elastic members 2 and 2 to prevent damage, and claws 3a,
3a, the claws 3a, 3a are engaged with the nut 1, and the retainers 3, 3 are connected to the elastic members 2, 2, respectively.
A nut assembly 4 is constructed by holding the nut 1 on both axial end surfaces of the nut 1 via the screw holes. 5 is a nut housing having a fitting hole 5a. The axial dimension of the fitting hole 5a is set to be slightly smaller than the axial dimension of the nut assembly 4. The nut assembly 4 can be easily fitted into the fitting hole 5a by elastic deformation of the elastic members 2, 2 interposed in the nut assembly 4. Note that the threaded portion 5b provided in the nut housing 5
is for fixing to a seat fixing rail (not shown). 6 is a drive shaft that is attached to a moving rail (not shown) and rotated by a motor or the like;
It has a threaded portion 6a that engages with the nut 1.

If twisting or eccentricity occurs between the drive shaft 6 and the nut 1 in the installed state of the device of the present invention with the above configuration, the elastic member interposed between the nut 1 and the retainers 3, 3 2.2 elastic deformation absorbs twisting and aligns,
Even against eccentricity, the fitting hole 5a is fixed by the elastic members 2, 2.
Since the nut assembly 4 and the nut assembly 4 are fitted with appropriate frictional force, the nut assembly 4 can be easily moved by rotation of the drive shaft 6 and can be aligned with the drive shaft 6.

As described above, the present invention constitutes a nut assembly by engaging the claws provided on the outer periphery of the retainer with the nut and holding the retainer on the axial end surface of the nut via the elastic member, and also constructs the nut assembly by engaging the claws provided on the outer periphery of the retainer with the nut. Since the nut assembly is fitted into the fitting hole, it is possible to align the drive shaft and the nut, and also eliminates a set screw in the nut assembly and significantly increases the strength of the nut housing. Therefore, it has excellent effects such as being able to be made smaller and lighter, as well as being cheaper and easier to assemble.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a perspective view, Fig. 2 is a front view, and Fig. 3 is A--A in Fig. 2.
It is an A sectional view. DESCRIPTION OF SYMBOLS 1... Nut, 2... Elastic member, 3... Retainer, 3a... Claw, 4... Nut assembly, 5... Nut housing, 5a... Fitting hole, 6... Drive shaft, 6a... Threaded part.

Claims (1)

[Scope of utility model registration request] A feeding device for moving an automobile seat in which a nut assembly is disposed in a nut housing, in which a retainer is disposed on an axial end surface of a nut that engages with a threaded portion provided on a drive shaft via an elastic member for alignment, A claw provided on the outer periphery of the retainer is engaged with the nut, and the retainer is held on the axial end surface of the nut via the elastic member to form a nut assembly, and the nut assembly is attached to the nut. A nut assembly structure for a feeder for moving an automobile seat, characterized in that the nut is fitted into a fitting hole provided in a housing.