CN110159622A - Connecting unit of profile material with holes - Google Patents

Abstract

The invention belongs to structural shape technical fields, are related to a kind of connecting unit of profile material with holes, including a pair of of through-hole type connecting pin, a pair of of nut type connecting pin and four stay bolts；The section of the through-hole type connecting pin and the nut type connecting pin axisymmetricly structure, including the parallel side plane in left and right, is located below and perpendicular to the lower plane of side plane, the V-groove above symmetry axis and several arc surfaces.The present invention pass through stay bolt can along symmetry axis, so ensure that bonding strength and stability, link position opposite band hole profile be avoided to generate deformation.

Description

Perforated Profile Connection Components

technical field

The invention relates to the technical field of structural profiles, in particular to a profile connection assembly with holes.

Background technique

With the continuous development of the domestic automobile industry, the competition in the industry is becoming increasingly fierce, and users have higher and higher requirements for the quality of automobiles. In order to maintain product competitiveness, OEMs are accelerating the pace of model updates and launching new models. At the same time, various Automobile manufacturers are also constantly adopting new technologies and new processes, and have also turned their attention to the development of measurement technology. The development of manufacturing technology is also inseparable from measurement technology, and the two complement each other and promote each other. The new measurement technology constantly reveals the shortcomings of the new process, so that it can be further innovated and transformed to become more perfect. As the basic components of measurement technology, inspection fixtures and fixtures play an increasingly obvious role in the production site. The traditional form of special inspection fixtures and fixtures for a single car model has gradually failed to meet the requirements. Higher requirements are put forward for economy and quick response capability, so meeting multi-function, flexibility, high efficiency and low cost directly determines customer satisfaction.

As the basic structure of inspection fixtures and fixtures, aluminum profiles are not only the basis for the dimensional accuracy of the inspection fixtures and fixtures, but also the guarantee for high-precision flexibility and reliability. The basic structure of the existing inspection fixtures and fixtures basically adopts market standard trough-type industrial aluminum profiles, standard hollow square tube aluminum profiles and steel square tube profiles as the basic structure of the inspection tools, and is connected by drilling and bolts or welding. The basic structure is fastened and limited, but the weight is heavy, the surface aesthetics is poor, it cannot be disassembled repeatedly, and the surface treatment of the welded part is not easy. Therefore, using standardized aluminum profiles with holes to build a frame for installing inspection fixtures and fixtures is a solution that is convenient for storage and use.

In order to build the fixed frame, we will use standardized perforated profiles and matching connecting components. The connecting components include a pair of through-hole connecting pins, a pair of nut-type connecting pins and four long bolts, through-hole connecting pins and nuts The type connecting pin is provided with a through hole or threaded hole that passes through the axial direction for the long bolt to pass through. Pin together and pull tight. However, these connecting pins are generally cylindrical in outer circumference, and the cooperation with the finishing hole is an unstable single-line contact, and the axial locking force cannot be consistent with the axis of the connecting piece during locking.

Therefore, it is necessary to develop a connection component with a new structure to solve the above problems.

Contents of the invention

The main purpose of the present invention is to provide a section bar connection assembly with holes, which can complete the assembly of specific section bars with holes with high precision.

The present invention achieves the above object through the following technical solutions: a profile connection assembly with holes, including a pair of through-hole type connection pins, a pair of nut-type connection pins and four long bolts; the through-hole type connection pins and the nuts The section of the type connecting pin is an axisymmetric structure, including left and right parallel side planes, a lower plane located below and perpendicular to the side planes, and several arc surfaces. The long bolts are fixed through the symmetrical axis of the connecting pin.

Specifically, a V-shaped groove symmetrical along the axis of symmetry is arranged above the connecting pin.

Further, the inner angle of the V-shaped groove is 120°.

Specifically, the arc surfaces have the same radius R, the upper arc surface has a common center, and the lower arc surface has another center, and the two centers have an eccentricity A.

Adopt above-mentioned technical scheme, the beneficial effect of technical scheme of the present invention is:

The invention enables the long bolts to always pass along the symmetry axis, thus ensuring the connection strength and stability and avoiding deformation of the connection position relative to the profile with holes.

Description of drawings

Fig. 1 is the assembly drawing of the profile connection assembly with holes;

Fig. 2 is a cross-sectional view of a through hole type connecting pin;

Fig. 3 is a schematic diagram of the assembly of a nut-type connecting pin in a fine hole of a larger profile;

Fig. 4 is a schematic diagram of the assembly of the nut type connecting pin in the fine hole of the smaller profile.

The numbers in the figure indicate:

1a-through-hole type connection pin, 1b-nut type connection pin, 11-side plane, 12-lower plane, 13-upper arc surface, 14-lower arc surface, 15-V-shaped groove;

2 - long bolts;

3-profile fine hole, 3'-profile fine hole.

Detailed ways

The present invention will be described in further detail below in conjunction with specific embodiments.

Example

As shown in Figures 1 to 4, the present invention is a section bar connection assembly with holes, including a pair of through-hole type connection pins 1a, a pair of nut-type connection pins 1b and four long bolts 4; through-hole type connection pins 1a The cross-section of the nut-type connecting pin 1b is an axisymmetric structure, and the long bolt 4 passes through a side plane 11 that is parallel to the left and right, a lower plane 12 that is located below and is perpendicular to the side plane 11, and several arc surfaces (the upper arc surface 13 and lower arc surface 14), the long bolt 2 is fixed through the axis of symmetry of the connecting pin. Because the side plane 11 and the lower plane 12 are cut out on the through hole type connecting pin 1a and the nut type connecting pin 1b, when the long bolt 4 tightens the two, the outer circumference can always form two axial symmetry with the fine hole of the profile line contact. When the profile fine hole 3 was relatively large, the contact point (circled on the figure) was located at the junction of the lower plane 12 and the lower arc surface 14 on both sides; when the profile fine hole 3' was relatively small, the contact point (circled on the figure) Circled) is located at the junction of the side plane 11 and the lower arc surface 14 . Therefore, when the long bolt 4 is locked, the long bolt 2 can always pass through along the axis of symmetry, thus ensuring the strength and stability of the connection and avoiding deformation of the connection position relative to the profile with holes.

As shown in FIG. 2 to FIG. 4 , a V-shaped groove 15 symmetrical along the axis of symmetry is arranged above the connecting pins 1a, 1b, and the inner angle of the V-shaped groove 15 is 120°. The 120° V-shaped groove 15 ensures that the processing direction is aligned with the axis line of the threaded connector when processing the through hole or the threaded hole, which can prevent the drill bit from being eccentric during the drilling process, ensure the processing accuracy, and facilitate the recognition of the connecting pin 1a, 1b Assembly orientation.

As shown in FIGS. 2 to 4 , the arc surfaces have the same radius R, the upper arc surface 13 has a common center, and the lower arc surface 14 has another center, and the two centers have an eccentricity A. Therefore, the cross section of the connecting pins 1a and 1b is always smaller than the full circle with the same radius R (this side is equivalent to the radius of the fine hole of the profile), so as to avoid being too tightly matched with the fine hole of the profile and cannot be adjusted by itself.

What have been described above are only some embodiments of the present invention. For those skilled in the art, without departing from the inventive concept of the present invention, several modifications and improvements can be made, and these all belong to the protection scope of the present invention.

Claims (4)

1. A profile connection assembly with holes, characterized in that: it comprises a pair of through hole type connection pins, a pair of nut type connection pins and four long bolts; the through hole type connection pins and the nut type connection pins The cross-section is axisymmetric structure, including left and right parallel side planes, a lower plane located below and perpendicular to the side planes, and several arc surfaces. The long bolts pass through the symmetry axis of the connecting pin and are fixed. 2. The profile connection assembly with holes according to claim 1, wherein a V-shaped groove symmetrical along the axis of symmetry is arranged above the connection pin. 3. The profile connection assembly with holes according to claim 2, characterized in that: the inner angle of the V-shaped groove is 120°. 4. The profile connection assembly with holes according to claim 1, characterized in that: the arc surfaces have the same radius R, the upper arc surface has a common center, and the lower arc surface has another center, and the two centers have Eccentricity A.