RU176593U1 - CONNECTING UNIT FOR CONNECTING PARTS AND BALL JOINT - Google Patents

Abstract

The utility model relates to mechanical engineering, in particular to a connecting block for connecting parts and ball bearings. The technical result of the utility model is the possibility of mutual movement of the part and the ball bearing relative to each other, in particular: the possibility of angular displacement (rotation) of the ball bearing relative to the part and vice versa; and the possibility of mutual movement of the part and the ball bearing relative to each other with a change in the direction of the axis of the fixing screw relative to the connected part. The connecting unit for connecting the part and the ball joint using the fastener is characterized in that the fastener is made in the form of a screw containing a head and a rod; a complicated through-hole of variable diameter is provided in the part, designed to accommodate the screw, the through-hole includes a section for mating the part with a ball bearing, a cylindrical section for accommodating the screw shaft, and a section for accommodating the head of the fixing screw; the profile of the through hole at the interface between the part and the ball bearing has the shape of a truncated cone, expanding towards the ball bearing and in contact with it; a blind radial hole with a thread is made in the ball bearing, designed to accommodate the screw shaft, while the holes in the part and the ball bearing are placed coaxially; the rod of the fixing screw is placed in the cylindrical section of the through hole of the part with a gap providing angular displacement of the part relative to the ball joint, and is fixed by means of a thread in the blind hole of the ball joint; an elastic compensator and a conical washer are installed under the screw head, resting on its spherical surface on its spherical surface formed in the area for holding the head of the fixing screw; the center of the convex spherical surface coincides with the center of the ball bearing. 8 ill.

Description

Technical field

The utility model relates to mechanical engineering, in particular to a connecting block for connecting parts and ball bearings. The utility model can be applied in transport, engineering, space and laboratory technology, for example, as supporting platforms for telescopes, optical instruments, antenna devices, measuring systems, etc.

State of the art

Currently, to solve certain technical problems, it is necessary to connect various parts to a ball bearing, for example, to position a flat part on a ball bearing.

In this application, the term "ball bearing" means a ball part designed to transfer weight and other loads from the unit (device) or part to the body (base).

So, from the prior art - DE 4104581 A1 (class E04B 1/19; F16S 3/08, published 08/20/1992) known connecting block for connecting parts (tubular) and ball bearings. In the ball bearing, a blind hole with a thread is made for installing the screw. The tubular part has an end conical part in which a screw is installed. The end conical part is adjacent to the ball joint by means of a coupling. This connecting block for connecting parts (tubular) and ball bearings relates mainly to the mounting blocks of spatial trusses and allows you to make this connection invisible at a low cost of its manufacture. However, this connection unit does not have the ability to move the part and the ball joint.

The closest analogue of the claimed utility model is the connection block, which is described in DE 10102862 A1 (CL F16B 5/06, F16B 5/02, E04F 11/18, E04F 13/08, E06B 3/54, published 08/14/2002).

The connection block consists of a base and an upper plate, between which a plate is located. A flange is attached at the bottom of the base, in which a hole for the bolt is made. A bolt passing through the hole of the flange is mounted on a spherical part. Thus, the plate is connected to the spherical part. In this case, the lower side of the base and the upper side of the flange form a connection that allows the plate to rotate / rotate relative to the flange and, accordingly, the spherical part. The disadvantages of this block connection are the complexity of the design of the block, because the rotation of the part is carried out by connecting the lower side of the base and the upper side of the flange; the lack of the ability to displace the plate directly relative to the part (ball joint), and accordingly the lack of the possibility of mutual displacement of the part and the ball joint.

A technical problem is the implementation of the connecting block for connecting the part and the ball joint with the possibility of mutual movement of the part and the ball joint relative to each other.

Utility Model Disclosure

The technical result of the utility model is the possibility of mutual movement of the part and the ball bearing relative to each other, in particular: 1) the angular displacement (rotation) of the ball bearing relative to the part and vice versa; 2) the mutual movement of the part and the ball bearing relative to each other with a change in the direction of the axis of the fixing screw relative to the connected part.

The technical result is achieved due to the fact that the connecting block for connecting the part and the ball bearing using the fastener is characterized by the following features:

- the fastener is made in the form of a screw containing a head and a rod;

- the part has a complex through-hole of variable diameter, designed to accommodate a screw, while the through-hole includes a section for mating the part with a ball bearing, a cylindrical section for accommodating the screw shaft and a section for accommodating the head of the fixing screw;

- the profile of the through hole at the interface between the part and the ball bearing has the shape of a truncated cone, expanding towards the ball bearing and in contact with it;

- a blind radial hole with a thread is made in the ball bearing, designed to accommodate the screw shaft, while the holes in the part and the ball bearing are placed coaxially;

- the rod of the fixing screw is placed in the cylindrical section of the through hole of the part with a gap providing angular displacement of the part relative to the ball joint, and is fixed by means of a thread in the blind hole of the ball joint;

- an elastic compensator and a conical washer are installed under the screw head, resting on its spherical surface on its spherical surface formed in the area for accommodating the head of the fixing screw;

- the center of the convex spherical surface coincides with the center of the ball bearing.

As an elastic compensator, a disk spring or a gear lock washer, or a Grover washer can be used.

The cylindrical section for placing the screw shaft in cross section can be made in the form of a circle.

The cylindrical section for placing the screw shaft in cross section can be made in the form of an ellipse.

The spherical surface formed in the area for accommodating the head of the fixing screw may be the surface of the spherical washer located in the through hole in this area.

The spherical surface formed in the area for accommodating the head of the fixing screw may be part of the through hole profile.

Brief Description of the Drawings

In FIG. 1 shows a top view of the joined part of the inventive connecting block, where the arrow indicates the possible mutual movement of the ball joint together with the screw relative to the part;

in FIG. 2 shows a drawing of a convex spherical washer; cross-sectional view and top view;

in FIG. 3 shows a drawing of a conical washer; cross-sectional view and top view;

in FIG. 4 shows a drawing of a part of a detail of the inventive connection block;

in FIG. 5 shows a section through an assembled connecting block for connecting a part and a ball joint, the convex spherical surface being a spherical washer;

in FIG. 6 shows a section through a 3D model of an assembled connecting block for connecting a part and a ball joint;

FIG. 7 illustrates the possibility of mutual movement of the part and the ball bearing relative to each other with a change in the direction of the axis of the fixing screw relative to the connected part;

in FIG. Figure 8 shows a section through an assembled connecting block for connecting a part and a ball joint, the convex spherical surface being a convex spherical bottom made in a cylindrical recess.

The positions in the drawings indicate:

1 - ball bearing;

2 - a complex through hole;

3 - convex spherical washer;

4 - conical washer under the screw head;

5 - fixing screw;

6 - the gap between the shaft of the screw 5 and the through hole 8;

7 - cylindrical recess (recess);

8 - through hole for the mounting screw 5;

9 - blind threaded hole in the ball bearing 1 for the mounting screw 5;

10 - elastic compensator;

11 - detail;

12 - conical recess in the part 11, based on a ball bearing 1;

13 - convex spherical bottom in a cylindrical recess 7;

R ₁ is the radius of curvature of the ball joint 1;

R ₂ is the radius of curvature of the convex spherical surface (convex spherical bottom 13 or spherical washer 3);

O is the center of the ball joint 1, which coincides with the center of the convex spherical surface (convex spherical bottom 13 or spherical washer 3).

Utility Model Implementation

The connecting unit for connecting the part and the ball joint contains: part 11 and, accordingly, the ball joint 1, as well as the elements connecting them: a fastening element, an elastic compensator 10, a conical washer 4 and a convex spherical surface 3 (13).

The fastening element is made in the form of a screw 5 containing a head and a rod. Part 11 can be made in any form, for example, flat (plate, plate), etc.

A complicated through-hole 2 (Fig. 4) of variable diameter, designed to accommodate the screw 5, is made in the part 11, while this through-hole includes a part for mating the part with a ball bearing (conical recess 12), a cylindrical section for accommodating the screw 5-shaft (through-hole 8) and a section for accommodating the head of the fixing screw 5 (cylindrical recess 7). The through hole 8 has a cylindrical section for accommodating the shaft of the screw 5; this cylindrical section in cross section can be made in the form of a circle or an ellipse. The through hole 8 is coaxial to the recess (recess) 7. Between the hole 8 and the screw shaft 5 located inside it there is a gap 6 that provides the angular displacement (rotation) of the ball joint 1 together with the screw 5 relative to the part 11 (and, conversely, the angular displacement of the part 11 relative to ball joint 1 together with screw 5) - FIG. 5.

The surface of the conical recess 12 has the ability to slide (move) along the surface of the ball joint 1, and the conical surface of the washer 4, on which the screw head 5 rests, along the spherical surface of the washer 3 or spherical bottom 13. The rotation is carried out around the center (point O) of the ball joint 1 The angular displacement is limited by the size of the gap 6, the diameter of the cylindrical recess 7, the diameter of the washer 4, and the diameter of the spherical surface (3, 13).

A threaded blind radial hole 9 is provided in the ball bearing 1 for mounting the fixing screw rod 5. Thus, the screw shaft 5 is fixed by means of a thread in the blind hole 9 of the ball bearing 1.

A complex through hole 2 in the part 11 and the hole 9 in the ball joint 1 are placed coaxially.

To install the ball bearing 1 in the part 11, a conical recess 12 is made, coaxial to the through hole 8 (and, accordingly, the cylindrical recess 7). Thus, the profile of the through hole at the interface between the part 11 and the ball bearing 1 has the shape of a truncated cone (recess 12), expanding towards the ball bearing 1 and in contact with the ball bearing.

The contact of the part 11 with the ball bearing 1 is carried out on the above tapered recess 12. This contact allows the movement of the part 11 relative to the support 1 with a fixed position of its center and with constant contact of the part 11 with the support 1.

An elastic compensator 10 and a conical washer 4 are mounted under the screw head 5, resting on its spherical surface 3 (13), which is formed in the area to accommodate the head of the fixing screw 5, with its internal (concave) conical surface 4, and it (washer 4) facing the compensator 10. The screw head 5, the compensator 10, the conical washer 4 and the spherical surface 3 (13) are located in the recess 7. The shaft of the screw 5 passes through the compensator 10, the conical washer 4 and the spherical surface 3 (13), as well as through the holes 8 and 9.

The spherical surface formed in the area for accommodating the head of the fixing screw 5 may be the surface of the spherical washer 3 located in the complex through hole 2, and specifically in the area in the recess 7 - FIG. 5. Or, the spherical surface formed in the area for accommodating the head of the fixing screw 5 may be a part of the profile of the through hole 2, and specifically a part of the profile of the recess 7, forming a convex spherical bottom 13 - FIG. 8.

When making a spherical surface in the form of a spherical washer 3, the flat side of the washer 3 will face the indentation 7 (towards the ball bearing 1) and will rest on the flat bottom of the recess 7, and a conical concave is installed on the convex spherical side of the washer 3 washer 4.

The elastic compensator 10 provides the preload of the entire package of the connecting block calibrated force and, as a result, provides constant friction between the moving elements of the described block. As such an elastic compensator, a Belleville spring, a gear lock washer or a Grover washer can be used.

The radius of curvature R _{2 of the} convex spherical surface (convex spherical bottom 13 or spherical washer 3) is chosen so that the center of the convex spherical surface (washer 3 / spherical bottom 13) coincides with the center of the ball bearing 1 (point O).

Part 11 in the inventive connecting block can be rotated at an arbitrary angle around the axis of the fixing screw 5 relative to the ball bearing 1 (i.e., movement as shown by the arrow in Fig. 1). In this case, displacements in the plane of the part 11 itself are completely absent.

The second possible mutual displacement of the part 11 relative to the ball joint 1 occurs due to the simultaneous shift of the conical washer 4 along the convex surface of the spherical surface (washer 3 / spherical bottom 13) and the conical recess 12 along the surface of the ball joint 1. The direction of the axis of the fixing screw 5 relative to the part 11 varies within the limits determined by the diameters of the holes in the spherical surface 3 (13) and the diameter of the through hole 8 in the part 11. Illustration of the mutual displacement of the ball joint 1 together with the screw 5 relative to Ali 11 shown in FIG. 7.

Thus, in the inventive connecting block for connecting the part and the ball bearing, there is the possibility of mutual movement of the part and the ball bearing relative to each other.

Claims (13)

1. The connecting unit for connecting parts and ball bearings using a fastener, characterized in that - the fastener is made in the form of a screw containing a head and a rod; - in the part, a complex-shaped through hole of variable diameter is made, designed to accommodate a screw, while the through hole includes a section for mating the part with a ball bearing, a cylindrical section for accommodating the screw shaft, and a section for receiving the head of the fixing screw; - the profile of the through hole at the interface between the part and the ball bearing has the shape of a truncated cone, expanding towards the ball bearing and in contact with it; - a blind radial hole with a thread is made in the ball bearing, designed to accommodate the screw shaft, while the holes in the part and the ball bearing are placed coaxially; - the rod of the fixing screw is placed in the cylindrical section of the through hole of the part with a gap providing angular displacement of the part relative to the ball joint, and is fixed by means of a thread in the blind hole of the ball joint; - an elastic compensator and a conical washer are installed under the screw head, resting on its spherical surface on its spherical surface formed in the area for accommodating the head of the fixing screw; - the center of the convex spherical surface coincides with the center of the ball bearing. 2. The block according to claim 1, characterized in that a disk spring or a gear lock washer, or a Grover washer, can be used as an elastic compensator. 3. The block according to claim 1, characterized in that the cylindrical section for accommodating the screw shaft in cross section is made in the form of a circle. 4. The block according to claim 1, characterized in that the cylindrical section for accommodating the screw shaft in cross section is made in the form of an ellipse. 5. The block according to claim 1, characterized in that the spherical surface formed in the area for accommodating the head of the fixing screw is the surface of the spherical washer located in the through hole in this section. 6. The block according to claim 1, characterized in that the spherical surface formed in the area for accommodating the head of the fixing screw is a part of the through hole profile.

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