CN216300948U - Core assembly of automobile luggage rack section bar - Google Patents

Abstract

The utility model provides a core assembly of a car luggage rack section, which is arranged in a cavity of the section of the car luggage rack and is used for installing the car luggage rack on the top of a car body. The core assembly includes a flexible core, a rigid core, and a connector. The flexible core and the hard core are connected by adopting a splicing structure capable of inhibiting relative rotation between the flexible core and the hard core, the hard core is positioned on one side of the flexible core close to the end part of the section bar, the connecting piece is arranged on the hard core and is connected with the flexible core, and meanwhile, the connecting piece part extends out of the end part of the section bar to be connected with the top of a vehicle body. According to the core assembly of the automobile luggage rack section bar, the flexible core and the hard core adopt the splicing structure which can prevent the flexible core and the hard core from rotating relatively, so that the condition that the flexible core and the hard core rotate relatively in the cavity due to bending forming of the section bar can be effectively prevented, and the smooth assembling and butt joint of the flexible core and the hard core, and the core assembly and the section bar are facilitated.

Description

Core assembly of automobile luggage rack section bar

Technical Field

The utility model relates to the technical field of automobile accessories, in particular to a core assembly of an automobile luggage rack profile.

Background

The automobile luggage rack assembly decorating part is assembled on the roof part and is a visible exterior decorating part; therefore, the profiles used for automotive roof racks (generally aluminum tube profiles) require a bright appearance without refraction defects. The aluminum pipe parts of the luggage rack are formed by bending, the section of the aluminum pipe parts is of an opposite-shape polygonal cavity structure, and the whole bending shape of the aluminum pipe parts is a three-dimensional radian. In the stretch bending process, in order to prevent the deformation of a section cavity structure and further cause the appearance concave deformation of the section, a mold core needs to be plugged into the cavity of the section before bending. At present, if a core is not used in the domestic luggage rack forming process, the risk of collapse of the surface of a section bar can occur, and the quality of the section bar is difficult to ensure.

The assembly product has three-dimensional radian according to the requirement of the appearance modeling of the automobile, the extruded aluminum profile is three-dimensionally bent, the mold cores are required to be plugged into two ends of the luggage rack for bending, and the section shape of the mold core needs to be matched with the section shape of the inner cavity of the profile according to the shapes of the mold core and the inner cavity of the product. When the product is bent, the mold core and the profile product are bent together to form a three-dimensional radian bending shape.

Generally, the core filled into the cavity of the section comprises two sections, wherein one section is a hard core positioned at the end part of the section, the other section is a flexible core positioned in the cavity of the section, and the two sections of cores are directly connected in a butt joint mode; the hard core is responsible for connecting with the vehicle body, and the flexible core is filled in the cavity of the section bar and bends and deforms along with the bending of the section bar.

However, the two sections of cores are easy to rotate relatively when being bent, and the connecting threads between the two sections of cores are directly connected with the flexible core, so that the threads are easy to slide, and the connection is not firm. Relative rotation can result in the joint not being smooth, so that the core assembly cannot be repeatedly inserted into the cavity of the section product. Moreover, the flexible core is generally made of materials with poor screwing performance such as plastics and the like, and is directly tapped and easily slipped, so that the hard core and the flexible core are easily disjointed, and the service life of the core assembly is influenced.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a core assembly of a vehicle roof rack profile, so as to prevent a relative rotation between a flexible core and a rigid core in a cavity due to bending of the profile, and facilitate smooth assembly and butt joint between the flexible core and the rigid core, and between the core assembly and the profile.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

a core component of a section bar of an automobile luggage rack is arranged in a cavity of the section bar of the automobile luggage rack and is used for installing the automobile luggage rack on the top of an automobile body; the core assembly comprises a flexible core, a hard core and a connecting piece; the flexible mold core and the hard mold core are connected by adopting a splicing structure capable of inhibiting relative rotation between the flexible mold core and the hard mold core; the hard core is positioned on one side of the flexible core close to the end part of the section bar; the connecting piece is arranged on the hard core and connected with the flexible core, and the connecting piece partially extends out of the end part of the section bar so as to be connected with the top of the vehicle body.

Furthermore, the splicing structure comprises a convex block arranged at the end part of the flexible core and a groove arranged at the end part of the hard core; the lug is inserted into the groove in a rotation-limited manner.

Further, the connecting piece penetrates through the hard core and is in threaded connection with the flexible core.

Further, the connecting piece comprises a bolt and a locking nut, a second penetrating hole is formed in the hard mold core, the bolt penetrates through the second penetrating hole, and the end of a screw rod of the bolt is connected to the flexible mold core; the locking nut is positioned on one side, far away from the flexible core, of the hard core and is screwed on the bolt, and the hard core is fastened between the flexible core and the locking nut.

Furthermore, an insert is arranged on the flexible mold core, and the end part of the screw rod is in threaded connection with the insert.

Furthermore, an embedding groove and a first penetrating hole communicated with the second penetrating hole are formed in the flexible mold core; the insert is arranged in the insert groove, and the end part of the screw rod penetrates through the first penetrating hole and then is screwed on the insert.

Furthermore, the flexible mold core is made of polyethylene; and/or the hard core is made of steel.

Furthermore, the end part of the section bar is bent, and a plurality of gaps are arranged on the flexible mold core; and the gaps are perpendicular to the length direction of the flexible core and are arranged at intervals along the length direction of the flexible core.

Furthermore, one side of the flexible core is bent along with the end part of the section bar, and each gap is positioned on the bent side of the flexible core.

Further, the depth T of the gap and the thickness D of the flexible core meet: t is less than or equal to 0.6D.

Compared with the prior art, the utility model has the following advantages:

according to the core assembly of the automobile luggage rack section bar, the flexible core and the hard core adopt the splicing structure which can prevent the flexible core and the hard core from rotating relatively, so that the condition that the flexible core and the hard core rotate relatively in the cavity due to bending forming of the section bar can be effectively prevented, and the smooth assembling and butt joint of the flexible core and the hard core, and the core assembly and the section bar are facilitated.

Meanwhile, the connecting piece penetrating through the hard core is in threaded connection with the flexible core, so that reliable connection between the flexible core and the hard core can be formed, and reliable connection strength between the flexible core and the hard core is guaranteed. The universal connecting part of the bolt and the automobile luggage rack is adopted, so that the purchasing and the configuration are convenient; and the hard core can be firmly fastened on the flexible core by locking the automobile luggage rack, and the tight fit between the convex block and the groove is also facilitated.

In addition, because the flexible core is generally the material such as the relatively poor plastics of spiro union performance, through set up the insert on the flexible core, can effectively reduce the emergence of the smooth silk condition between bolt and the flexible core to promote the connection reliability between bolt and the flexible core, prevent to take place the disjointed condition between flexible core and the hard core.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model, illustrate embodiments of the utility model and together with the description serve to explain the utility model, and the description is given by way of example only and without limitation to the terms of relative positions. In the drawings:

fig. 1 is a schematic perspective view of a core assembly of an automotive roof rack section bar according to an embodiment of the present invention;

FIG. 2 is an elevation view of a core assembly according to an embodiment of the utility model;

FIG. 3 is an exploded view of a core assembly according to an embodiment of the utility model;

FIG. 4 is a side view of a core assembly according to an embodiment of the utility model;

description of reference numerals:

1. a flexible core; 10. a bump; 100. a first through hole; 101. inlaying a groove; 102. a gap;

2. a hard core; 20. a groove; 200. a second through hole;

3. a bolt; 30. a head portion; 300. a screw end;

4. an insert; 40. screwing holes;

5. and locking the nut.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc. appear, they are based on the orientation or positional relationship shown in the drawings and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the appearances of the terms first, second, etc. in the figures are also for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in conjunction with specific situations.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The utility model relates to a core assembly of a section bar of an automobile luggage rack, which is arranged in a cavity of the section bar of the automobile luggage rack and is used for installing the automobile luggage rack on the top of an automobile body, so that the situation that a flexible core 1 and a hard core 2 rotate relatively in the cavity due to bending forming of the section bar can be prevented, and the smooth assembling and butt joint of the flexible core 1 and the hard core 2 as well as the core assembly and the section bar can be favorably carried out.

In general, an exemplary structure of the core assembly is shown in fig. 1 and 2, and includes a flexible core 1 and a rigid core 2 connected by a splice structure capable of suppressing relative rotation therebetween, and a connecting member provided on the rigid core 2 and connected to the flexible core 1.

The flexible core 1 and the hard core 2 are filled in the cavity, the flexible core 1 is located inside the cavity, the hard core 2 is located on one side, close to the end portion of the section bar, of the flexible core 1, and the connecting part extends out of the end portion of the section bar to be connected with the top of a vehicle body.

Based on the above general description, referring to fig. 3, in order to prevent the relative rotation of the flexible core 1 and the rigid core 2 in the cavity caused by the bending of the profile, a splicing structure is adopted between the flexible core 1 and the rigid core 2 to prevent the relative rotation of the flexible core 1 and the rigid core 2 around the axial direction of the cores. The connection structure for preventing relative rotation can be arranged in various forms.

Preferably, in the present embodiment, the splicing structure includes a projection 10 provided at the end of the flexible core 1, and a recess 20 provided at the end of the rigid core 2; the projection 10 is inserted into the recess 20 in a rotationally restrained manner to form a spliced connection between the flexible core 1 and the rigid core 2. The matched structure of the convex block 10 and the groove 20 similar to a mortise and tenon joint is adopted, so that the structure is convenient to process, the relative rotation between the flexible core 1 and the hard core 2 can be effectively prevented, and the connection and the assembly between the flexible core 1 and the hard core 2 are convenient.

Obviously, after the above-mentioned arrangement for preventing relative rotation is completed, in order to ensure the connection reliability between the flexible core 1 and the hard core 2, the two can be fixedly connected stably by adopting forms such as bonding, connecting piece fixedly connecting and the like. In this embodiment, the two are fixedly connected by a connecting piece. Specifically, the connecting piece penetrates through the hard core 2 and is screwed on the flexible core 1 to form the connection of the flexible core 1 and the hard core 2; through the connecting piece that runs through hard core 2 and flexible core 1 spiro union, can form the reliable connection between flexible core 1 and the hard core 2 to guarantee to have reliable joint strength between the two.

Wherein the connecting piece comprises a bolt 3 and a lock nut 5. Meanwhile, a second through hole 200 is formed in the hard core 2; the bolt 3 passes through the second through-mounting hole 200, and the screw end 300 of the bolt 3 is attached to the flexible core 1.

At this moment, the lock nut 5 is positioned on the side of the hard core 2 far away from the flexible core 1 and is screwed on the bolt 3, and the hard core 2 can be fastened between the flexible core 1 and the lock nut 5 by screwing and pressing the lock nut 5 firmly on the hard core 2. The universal connecting components such as the bolt 3, the locking nut 5 and the like are adopted, so that the purchasing and the configuration are convenient; furthermore, the rigid core 2 is firmly secured to the flexible core 1 by the locking of the locking nut 5, also facilitating a tight fit between the protrusion 10 and the recess 20. While the head 30 of the bolt 3 is used for connection to the roof of the vehicle body.

In addition, in order to effectively reduce the occurrence of the slip between the bolt 3 and the flexible core 1 when the flexible core 1 is generally made of plastic or the like having poor screwing performance, it is preferable to provide the insert 4 on the flexible core 1 and screw the screw end 300 of the bolt 3 to the insert 4. The insert 4 is preferably made of a steel material. By arranging the insert 4 on the flexible core 1, the connection reliability between the bolt 3 and the flexible core 1 can be improved, the disjointing condition between the flexible core 1 and the hard core 2 is prevented, and the service life of the core assembly can be prolonged by about 30%.

Of course, the insert 4 may be fitted to the flexible core 1, or the insert 4 may be flexibly attached and detached by means of the insert pocket 101 or the like. In this embodiment, as shown in fig. 3, the flexible core 1 is provided with an insert groove 101 and a first insertion hole 100 penetrating through a second insertion hole 200. The insert groove 101 is preferably provided near the projection 10 and is opened perpendicular to the longitudinal direction of the flexible core 1. The insert 4 can be inserted into the insert groove 101, and the screw end 300 of the bolt 3 passes through the second through hole 200 and the first through hole 100 and then enters the insert groove 101 and is screwed into the screw hole 40 formed in the insert 4. An insert groove 101 is formed in the flexible core 1, so that the insert 4 can be assembled and disassembled conveniently.

The bolt 3 is penetrated and installed by adopting the first penetrating and installing hole 100 and the second penetrating and installing hole 200 which are communicated, so that the influence of the bolt 3 and the insert 4 on the appearance of the die core assembly is avoided; the integral structure is convenient to construct and implement and has good connection and assembly performance.

The flexible core 1 and the hard core 2 are respectively flexible and hard according to the different positions and performance requirements of the cores in the cavity; the material can be flexibly selected according to the performance requirement. Preferably, in the embodiment, the flexible core 1 is a profiling core made of polyethylene; the hard core 2 is a steel profiling core.

The profiling in this case means that the cross-sectional shape of the core is set to follow the cross-sectional shape of the cavity at the corresponding portion. The flexible core 1 and the hard core 2 respectively adopt a polyethylene profiling core and a steel profiling core, so that the flexible core 1 meets the requirement of bending deformation along with the bending shape of the section, and the hard core 2 can ensure that the end part of the section has enough connection strength.

The section bar based on the automobile luggage rack generally adopts an integrally extruded aluminum pipe section bar, and aiming at the condition that the end part of the section bar is in a three-dimensional radian bending shape, the flexible core 1 needs to be bent in a cavity along with the bending of the end part of the section bar. Therefore, a plurality of gaps 102 can be arranged on the flexible mold core 1; the slits 102 are provided perpendicular to the longitudinal direction of the flexible core 1 and arranged at intervals along the longitudinal direction of the flexible core 1. By machining a large number of slits 102 in the flexible core 1, the flexibility of the flexible core 1 in following the shape can be further improved.

In addition, each slit 102 is preferably provided on the curved side of the flexible core 1 in the case where the flexible core 1 is curved in accordance with the curved shape of the profile. By arranging the slits 102 on the inner side of the flexible core 1 to be bent, when the flexible core 1 is bent, the deformation slits 102 become narrower, which can ensure that the slits 102 can better increase the flexible deformation capability of the flexible core 1.

Based on the above arrangement, as shown in fig. 4, it is preferable to reasonably define the proportional relationship between the depth T of the slit 102 and the thickness D of the flexible core 1. Preferably, T.ltoreq.0.6D should be ensured; for example, T is 0.4, 0.5, or 0.6 times D. The depth T is controlled within 0.6 times of the thickness D, so that the requirement of increasing the flexible deformation capacity of the flexible core 1 can be met, and the adverse effect on the strength of the flexible core 1 can be relieved.

In summary, in the core assembly of the automotive roof rack profile of the embodiment, the flexible core 1 and the hard core 2 adopt a splicing structure capable of preventing the relative rotation of the flexible core 1 and the hard core 2, so that the relative rotation of the flexible core 1 and the hard core 2 in the cavity due to the bending of the profile can be effectively prevented; thereby facilitating smooth assembly and butt joint between the flexible core 1 and the hard core 2, and between the core assembly and the section bar.

When the core assembly is used, it is packed into the aluminum profile of the roof rack. When the section bar is bent, the section bar can be ensured not to deform in the bending process, and the flexible core 1 and the hard core 2 (mainly the flexible core 1) mainly play a role in supporting the inner wall of the bending radius of the section bar and preventing the section bar from deforming in the bending process.

The utility model realizes the prevention of the rotation of the core in the bending process through the structural optimization, can realize repeated uninterrupted telescopic use, and greatly improves the flexibility of the core through the design of the gap 102 similar to a sawtooth structure on the flexible core 1, thereby realizing the better fit between the core and the section during the bending forming and reducing the defects of collapse and bulge on the surface of the section.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. A core component of a section bar of an automobile luggage rack is arranged in a cavity of the section bar of the automobile luggage rack and is used for installing the automobile luggage rack on the top of an automobile body; the method is characterized in that:

the core assembly comprises a flexible core (1), a hard core (2) and a connecting piece;

the flexible mold core (1) and the hard mold core (2) are connected by adopting a splicing structure capable of inhibiting relative rotation between the flexible mold core and the hard mold core;

the hard core (2) is positioned on one side of the flexible core (1) close to the end part of the section bar;

the connecting piece is arranged on the hard core (2) and connected with the flexible core (1), and the connecting piece partially extends out of the end part of the section bar so as to be connected with the top of the vehicle body.

2. The core assembly of an automotive roof rack profile of claim 1, wherein:

the splicing structure comprises a convex block (10) arranged at the end part of the flexible core (1) and a groove (20) arranged at the end part of the hard core (2);

the projection (10) is inserted into the recess (20) in a rotationally limited manner.

3. The core assembly of an automotive roof rack profile of claim 1, wherein:

the connecting piece penetrates through the hard core (2) and is screwed on the flexible core (1).

4. The core assembly of an automotive roof rack profile of claim 3, wherein:

the connecting piece comprises a bolt (3) and a locking nut (5), a second penetrating hole (200) is formed in the hard mold core (2), the bolt (3) penetrates through the second penetrating hole (200), and the end part (300) of the bolt (3) is connected to the flexible mold core (1);

the locking nut (5) is positioned on one side, away from the flexible core (1), of the hard core (2) and is in threaded connection with the bolt (3), and the hard core (2) is fastened between the flexible core (1) and the locking nut (5).

5. The core assembly of an automotive roof rack profile of claim 4, wherein:

the flexible mold core (1) is provided with an insert (4), and the end part (300) of the screw is screwed on the insert (4).

6. The core assembly of an automotive roof rack profile of claim 5, wherein:

an embedding groove (101) and a first penetrating hole (100) communicated with the second penetrating hole (200) are formed in the flexible mold core (1);

the insert (4) is arranged in the insert groove (101), and the end part (300) of the screw rod penetrates through the first penetrating hole (100) and then is screwed on the insert (4).

7. The core assembly of an automotive roof rack profile according to any one of claims 1 to 6, characterized in that:

the flexible mold core (1) is made of polyethylene; and/or the presence of a gas in the gas,

the hard core (2) is made of steel.

8. The core assembly of an automotive roof rack profile of claim 7, wherein:

the end part of the section bar is bent, and a plurality of gaps (102) are arranged on the flexible mold core (1); the gaps (102) are perpendicular to the length direction of the flexible core (1) and are arranged at intervals along the length direction of the flexible core (1).

9. The core assembly of an automotive roof rack profile of claim 8, wherein:

one side of the flexible core (1) is bent along with the end part of the section bar, and each gap (102) is positioned on one bent side of the flexible core (1).

10. The core assembly of an automotive roof rack profile of claim 9, wherein:

the depth T of the slit (102) and the thickness D of the flexible core (1) satisfy: t is less than or equal to 0.6D.

Images