RU117195U1 - BALL MANIPULATOR - Google Patents

Abstract

1. A ball arm containing a driving ball and two mutually perpendicular driven rollers located in the housing and kinematically connected to each other, on the axes of which the code wheels and associated coordinate converters are fixed, characterized in that on the outer side of the housing there is a cylindrical bead with a fixing element , for example, in the form of a rubber ring, (or a thread with a large pitch is made on the collar and on the cover), for example, in the form of a groove on the collar, in which an elastic element (rubber ring or split spring ring) is installed, on which a protective cover is installed, connected by flexible connection to the outer surface of the manipulator or to the device body. ! 2. A ball joint according to claim 1, characterized in that a damping element made of an elastic material, for example, in the form of a rubber ring, is fixed inside the cover.

Description

The utility model relates to automation and computer technology and can be used in systems for displaying information on the screen of a raster monitor to move the cursor, control the orientation of images of moving objects on the screen of a raster monitor.

Known ball manipulator application for the invention No. 201048879, containing located in the housing and kinematically connected to each other, the leading ball and two mutually perpendicular driven rollers, on the axes of which are fixed code wheels and associated coordinate converters. In the lower part of the ball there is a pressure bar connected to a spring-loaded clamp rod, providing a tight pressing of the ball to the inner surface of the hole with an elastic sealing element.

A disadvantage of the known spherical manipulator-analogue is the complexity of the design, which has a kinematically connected ball, a pressure bar and a spring-loaded retainer.

The closest in technical essence to the proposed invention (prototype) is a trackball containing a leading ball located in the housing and kinematically connected to each other and two mutually perpendicular driven rollers, on the axes of which code wheels are fixed with associated coordinate transformers. In the lower part, under the ball, there is an elastic clamping element that provides tight pressing with the inner surface of the housing opening. (TRACK BALL DEVICE, US patent No. 2006/0092136 A1,

MKI G09G 5/08, authors Kenji Nishimura, Tamotsu Yamamoto.

A disadvantage of the known spherical manipulator-analogue is that the design is complicated due to the use of an elastic clamping element and requires high-quality manufacturing of the mating surfaces of the ball and the casing to provide the necessary tightness.

The proposed ball manipulator allows you to simplify the design, to provide splash and dust protection and protection of the leading ball from mechanical stress (shock).

The aim of the present invention is to simplify the design, providing dust and dust protection and protection from mechanical stress on the leading ball.

To do this, in the claimed spherical manipulator on the outer side of the housing, there is, around (on the periphery) a conical hole for mounting the leading ball, a cylindrical collar on which a protective cover is mounted and which can be connected by a flexible connection to the outer surface of the manipulator or to the device body.

A damping element made of an elastic material, for example in the form of a rubber ring, is fixed inside the protective cover.

To fix the cover on the housing on the side surface of the shoulder there is a locking element, for example, in the form of a groove on the shoulder, in which an elastic element (rubber ring or split spring ring) is installed, see Fig. 1, or there is a pin on the side diametrical sides of the shoulder, and the lid has a L-shaped groove, see FIG. 2, or a thread with a large pitch is made on the shoulder and on the lid.

The task of simplifying the design was solved by eliminating kinematically connected clamping elements and by reducing the requirements for the mating surfaces of the ball and body.

List of drawings

Figure 1 shows a ball manipulator with a protective cover fixed by an elastic element.

Figure 2 shows a trackball with a protective cover fixed by pins.

The ball manipulator comprises a housing 1 having on the outside a flange around a conical hole for placement with a clearance of the leading ball 2, resting (kinematically connected) on two driven mutually perpendicular rollers 3, 4 and a side roller 5 made in the form of a roller. On the axes of the driven rollers, code wheels 6 are installed, the gear part of the surface of which is located inside the grooves of the coordinate converters 7, which have a coaxially mounted LED and a photodiode. On the side surface of the shoulder there is a fixing element 8 made in the form of an elastic element, for example, a rubber ring or a split spring ring mounted in a groove on the side surface of the shoulder. A protective cover 9 with a flexible connection 10 is installed and fixed on the shoulder, protecting the leading ball from external mechanical influences, water, dust and other contaminants inside the manipulator. A damping element 11 is made inside the lid and is made, for example, in the form of a rubber ring, which, without a gap, mates with the driving ball and limits its vibrations when exposed to vibrational loads.

The trackball works as follows:

When the lid is mounted on the shoulder of the manipulator (see Fig. 1), the lid is fixed by friction between the inner surface of the lid and the fixing element, for example, a rubber ring, which at the same time protects against penetration of water, dust and other contaminants onto the drive ball and into the manipulator cavity. In case of impact on the manipulator of operational shock and vibration loads, the leading ball, which is installed in the housing with a gap, has the ability to move and strengthen the mechanical effect on the driven rollers and their bearings. To eliminate these effects, a damping element is fixed inside the lid, which, when the lid is closed, has no gap with the surface of the ball and is made of elastic material, for example, in the form of a rubber ring. The energy of movement of the ball is expended on the deformation of the elastic damping element.

To work with the manipulator, the cover is easily removed and access to the leading ball is opened.

The proposed ball manipulator is industrially feasible, it allows for dust and dust protection and protects the leading ball from external mechanical influences (shock), thereby expanding the scope.

Claims (2)

1. A ball manipulator comprising a driving ball located in the housing and kinematically connected with each other and two mutually perpendicular driven rollers, on the axes of which the code wheels and associated coordinate converters are fixed, characterized in that there is a cylindrical shoulder with a locking element on the outside of the housing , for example, in the form of a rubber ring, (either large-pitch threads are made on the collar and on the lid), for example, in the form of grooves on the collar in which an elastic element (rubber ring or split spring ring), on which a protective cover is mounted, connected by a flexible connection with the outer surface of the manipulator or with the body of the device. 2. The trackball according to claim 1, characterized in that a damping element made of an elastic material, for example, in the form of a rubber ring, is fixed inside the lid.