CN218198495U - Connection structure and vehicle - Google Patents

Abstract

The present disclosure relates to a connecting structure and a vehicle. The connecting structure comprises a main frame, an auxiliary frame and a connecting piece. The connecting piece is fixedly connected with the auxiliary frame and is fixed with the main frame in a spot welding mode. The connecting structure in this disclosure is through spot welding with connecting piece and main frame fixed connection, because the heat time is very short, connecting piece and main frame can hardly produce the deformation, and the discrepancy between connecting piece and the main frame is less promptly, makes things convenient for the fastener to assemble the sub vehicle frame. Simultaneously, the connecting piece self can have the straightness that hangs down of high standard to reduce the contained angle between connecting piece and the main frame, improve the installation moment of torsion of fastener, avoid sub vehicle frame to have the risk of pine taking off and abnormal sound.

Description

Connection structure and vehicle

Technical Field

The present disclosure relates to the field of vehicle technology, and more particularly, to a connection structure and a vehicle.

Background

The rear auxiliary frame of the passenger vehicle is connected with the main frame of the vehicle main body, and in order to ensure the connection strength and the durability, a long screwed pipe and long bolt connection mode is mostly adopted.

The main frame is connected with the auxiliary frame through the conventional threaded pipes mostly through carbon dioxide arc welding, large heat can be generated in the welding process through the carbon dioxide arc welding, and the threaded pipes are easy to deform due to heating, so that the verticality is reduced, and large out-of-tolerance is generated. Wherein, the large out-of-tolerance results in difficult bolt assembly; meanwhile, the perpendicularity difference can cause a large included angle between the threaded pipe and the main frame, so that the torque of the mounting bolt is reduced, and the subsequent loosening and abnormal sound risks exist.

SUMMERY OF THE UTILITY MODEL

The present disclosure provides a connecting structure and a vehicle to solve at least some problems in the related art.

According to a first aspect of the present disclosure, a connecting structure is provided that is applied to a vehicle. The connecting structure comprises a main frame, an auxiliary frame and a connecting piece. The connecting piece with sub vehicle frame fixed connection. The main frame includes a side member extending in a first direction. The connecting piece comprises a base and a connecting part. The base comprises a first upper surface and a first lower surface which are oppositely arranged. The connecting portion is disposed on the first lower surface and extends along the second direction. The connecting portion includes a first sidewall. The first side wall and the longitudinal beam are fixed in a spot welding mode. Wherein the first direction and the second direction are perpendicular.

Optionally, the connecting portion further includes a second sidewall. The second side wall includes a flat surface for spot welding fixation with the stringer.

Optionally, the main frame includes a longitudinal beam and a first bracket disposed on the longitudinal beam. The first bracket comprises a first welding surface attached to the first side wall. The first welding surface and the first side wall are fixed in a spot welding mode.

Optionally, the longitudinal beam includes a horizontal first mounting plate and a horizontal second mounting plate, and a vertical connecting plate disposed between the first mounting plate and the second mounting plate. The first mounting plate is located above the second mounting plate.

The first support comprises a body piece and a bulge, wherein the body piece is attached to and fixed on the connecting plate, and the bulge is arranged on the body piece. The raised portion is raised in a direction away from the connecting plate. The first welding surface is provided on the raised portion.

Optionally, the main frame further comprises a second bracket arranged on the longitudinal beam. The second support comprises a second welding surface attached to the connecting part. The second welding surface is perpendicular to the first welding surface and is fixed with the connecting part in a spot welding mode.

Optionally, the connecting structure further comprises a nut plate. The nutplate includes oppositely disposed second upper and lower surfaces. And the second upper surface and the longitudinal beam are fixed in a spot welding mode. The second lower surface is fixedly connected with the base.

Optionally, the connecting piece further includes a protruding strip disposed on the first upper surface. The base passes through the sand grip with the second lower surface projection welding is fixed.

Optionally, the connecting piece further includes a connecting hole disposed on the first upper surface. The connecting hole extends along the direction of the first upper surface pointing to the first lower surface.

The connecting structure further comprises a fastener arranged on the auxiliary frame. The fastener with the connecting hole cooperation is in order with sub vehicle frame with connecting piece fixed connection.

Optionally, the connection hole comprises a light hole or a threaded hole.

Optionally, the fastener comprises a self-tapping screw or bolt member.

According to a second aspect of the present disclosure, a vehicle is proposed, which further comprises a connecting structure as described above.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

the connecting structure in this disclosure is through spot welding with connecting piece and main frame fixed connection, because the heat time is very short, connecting piece and main frame can hardly produce the deformation, and the discrepancy between connecting piece and the main frame is less promptly, makes things convenient for the fastener to assemble the sub vehicle frame. Simultaneously, the connecting piece self can have the straightness that hangs down of high standard to reduce the contained angle between connecting piece and the main frame, improve the installation moment of torsion of fastener, avoid sub vehicle frame to have the risk of pine taking off and abnormal sound.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a schematic structural view of a connection structure in an exemplary embodiment of the present disclosure;

FIG. 2 is an exploded schematic view of a connection structure in an exemplary embodiment of the present disclosure;

FIG. 3 is a first schematic structural view of a connector according to an exemplary embodiment of the present disclosure;

fig. 4 is a second structural schematic diagram of a connector in an exemplary embodiment of the present disclosure.

Description of reference numerals: 1. a main frame; 2. a connecting member; 20. a base; 21. a connecting portion; 200. a first upper surface; 201. a first lower surface; 210. a first side wall; 211. a second side wall; 212. a third side wall; 213. a fourth side wall; 10. a stringer; 100. a first sub-beam; 101. a first mounting plate; 102. a second mounting plate; 103. a connecting plate; 104. a second sub-beam; 105. a third mounting plate; 106. a fourth mounting plate; 107. a second connecting plate; 3. a first bracket; 30. a first weld face; 31. a raised portion; 4. a second bracket; 40. a second weld face; 5. a nut plate; 50. a second upper surface; 51. a second lower surface; 22. a convex strip; 23. connecting holes; 6. a fastener; A. a first direction; B. a second direction.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in the description and claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of two. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

As shown in fig. 1 and 2, a first aspect of the present disclosure proposes a connecting structure applied to a vehicle. The connecting structure includes a main frame 1, a sub-frame (not shown) and a connecting member 2.

The main frame 1 is a frame structure bridged on the front and rear axles of the vehicle, commonly called a crossbeam, and is a base body of the vehicle. The main frame 1 generally comprises two longitudinal beams 10 and a number of transverse beams, which are supported on the wheels via suspension devices, front and rear axles. The main frame 1 must have sufficient strength and rigidity to withstand the load of the automobile and the impact transmitted from the wheels. The main frame 1 functions to support and couple various assemblies of the vehicle, maintain the respective assemblies in a relatively correct position, and bear various loads inside and outside the vehicle.

The subframe can be considered as a skeleton of the front and rear axles, which are components of the front and rear axles, through which the front and rear axles and the suspension unit are connected to the main frame 1, and is therefore conventionally referred to as a "subframe". The auxiliary frame has the functions of isolating vibration and noise and preventing the vibration and the noise from directly entering a carriage. After the subframe is produced, the front and rear axles and the suspension units can be assembled to the subframe to form an axle assembly, which is then mounted to the main frame 1.

The connecting element 2 is the main component for connecting the main frame 1 and the subframe. The cooperation between the connecting member 2 and the main frame 1 and the sub-frame will directly affect the stability of the entire connecting structure. Therefore, the connecting member 2 in the present disclosure is fixedly connected to the subframe and is spot-welded to the main frame 1. Spot welding is a welding method in which a columnar electrode is used to form a welding spot between the contact surfaces of two overlapped workpieces during welding, and has the advantages of short heating time, high welding speed and the like. The connection structure in this disclosure is through spot welding with connecting piece 2 and main frame 1 fixed connection, because the heat time is very short, connecting piece 2 and main frame 1 can hardly produce the deformation, and the discrepancy between connecting piece 2 and the main frame 1 is less promptly, makes things convenient for fastener 6 to assemble the sub vehicle frame. Simultaneously, connecting piece 2 self can have the straightness that hangs down of high standard to reduce the contained angle between connecting piece 2 and the main frame 1, improve the installation moment of torsion of fastener 6, avoid sub vehicle frame to have the risk of pine taking off and abnormal sound.

In some embodiments, the main frame 1 comprises a longitudinal beam 10 extending in the first direction a. The connector 2 comprises a first sidewall 210 parallel to the second direction B. The first side wall 210 includes a flat surface for spot welding with the side member 10. The second direction B is perpendicular to the first direction a. The flat surface enables the connection member 2 and the longitudinal member 10 to be fixed by spot welding.

In the present disclosure, for convenience of understanding, the second direction B refers to a vertical direction. Of course, in other embodiments, the second direction B may also be other directions; the present disclosure is not so limited.

As shown in fig. 3 and 4, the connector 2 of the present disclosure includes a base 20 and a connection part 21. The base 20 includes a first upper surface 200 and a first lower surface 201 disposed oppositely. The connecting portion 21 is disposed on the first lower surface 201 and extends along a direction in which the first upper surface 200 points to the first lower surface 201, that is, along the second direction B. The connecting portion 21 has a square columnar structure. The connecting portion 21 includes a first sidewall 210, a second sidewall 211, a third sidewall 212, and a fourth sidewall 213 enclosing a rectangle. Wherein the first sidewall 210, the second sidewall 211, the third sidewall 212, and the fourth sidewall 213 each comprise a plane. The first and second side walls 210 and 211 are fixed to the main frame 1 by spot welding.

Connecting portion 21 in this disclosure is square column structure, makes the structure of connecting piece 2 comparatively regular on the one hand, improves the pleasing to the eye of connecting piece 2 outward appearance to make things convenient for the manufacturing shaping of connecting piece 2. On the other hand, the first side wall 210, the second side wall 211, the third side wall 212 and the fourth side wall 213 each include a flat surface so that the connecting member 2 can be fixedly connected to the main frame 1 by spot welding. Of course, in other embodiments, the connecting portion 21 may also be a triangular column structure, a polygonal column structure or other irregular structures including an arc surface, as long as it includes a plane for spot-welding with the main frame 1. The present disclosure is not so limited.

Likewise, in other embodiments, it may be fixed by spot welding only the first side wall 210 and the main frame 1. Or, the plurality of side walls are fixed with the main frame 1 by spot welding. The present disclosure is not so limited.

The main frame 1 includes a side member 10. The side member 10 is the most important load bearing member in a vehicle and is generally stamped from low alloy steel sheet, and has a generally channel-shaped cross-section. As shown in fig. 2, the longitudinal beam 10 includes a first sub-beam 100 and a second sub-beam 104 disposed one above the other. The cross sections of the first sub-beam 100 and the second sub-beam 104 are Z-shaped. The first sub-beam 100 includes a first mounting plate 101, a second mounting plate 102, and a first connection plate 103 connectively disposed between the first mounting plate 101 and the second mounting plate 102. The second sub-beam 104 comprises a third mounting plate 105, a fourth mounting plate 106 and a second connecting plate 107 connectively arranged between the third mounting plate 105 and the fourth mounting plate 106. Wherein the second mounting plate 102 of the first sub-beam 100 and the third mounting plate 105 of the second sub-beam 104 are fixedly connected. The first mounting plate 101 and the first connection plate 103 of the first sub-beam 100 form a channel structure in cooperation with the fourth mounting plate 106 and the second connection plate 107 of the second sub-beam 104. The stringer 10 thus provided is structurally stronger. The subframe is typically fixedly connected to the longitudinal beam 10 in the main frame 1 by means of a connecting element 2 and a fastening element 6 passing through the first mounting plate 101 and the subframe, thereby fixedly connecting the subframe to the longitudinal beam 10 in the main frame 1. Considering the structure of the longitudinal beam 10, if the connecting member 2 is directly welded and fixed to the first connecting plate 103, the through hole of the longitudinal beam 10 for the fastening member 6 to pass through is necessarily located on the edge of the first mounting plate 101 close to the first connecting plate 103, which inevitably greatly reduces the load-bearing capacity of the longitudinal beam 10.

Therefore, in some embodiments, the main frame 1 of the present disclosure further includes a first bracket 3 attached to the first connecting plate 103 and the second connecting plate 107, and the first bracket 3 includes a first welding surface 30 attached to the first side wall 210. The first welding surface 30 is fixed to the first sidewall 210 by spot welding. Wherein, set up first support 3 and can conveniently carry out spot welding to connecting piece 2 and connect.

As an alternative embodiment, the first bracket 3 further includes a body member attached and fixed to the first connecting plate 103 and the second connecting plate 107, and a raised portion 31 provided on the body member. The swelling portion 31 swells in a direction away from the first connection plate 103. The first welding surface 30 is provided on the raised portion 31. By so arranging, on the one hand, the bulge 31 can change the position of the through hole on the first mounting plate 101, so that the through hole position is no longer close to the first connecting plate 103, and the bearing capacity of the longitudinal beam 10 is ensured. On the other hand, the structural strength of the first bracket 3 can be enhanced, and the stability between the first bracket 3 and the connecting piece 2 is ensured.

In some embodiments, the main frame 1 further comprises a second bracket 4 provided on the side member 10. Both ends of the second bracket 4 are fixedly mounted on the first mounting plate 101 of the first sub-beam 100 and the fourth mounting plate 106 of the second sub-beam 104, respectively. The second bracket 4 includes a second welding surface 40 attached to the connecting portion 21. The second welding surface 40 is fixed to the connecting portion 21 by spot welding. By such an arrangement, the second bracket 4 can increase the structural strength of the longitudinal beam 10 and the load-bearing capacity of the longitudinal beam 10. On the one hand, the second bracket 4 extends in a direction perpendicular to the first connecting plate 103, and the position of the through hole on the first mounting plate 101 can also be changed, so that the through hole position is no longer close to the first connecting plate 103, and the bearing capacity of the longitudinal beam 10 is ensured.

It should be noted that, the main frame 1 in the present disclosure includes both the first bracket 3 and the second bracket 4, so that the welding area between the connecting portion 21 and the side member 10 is increased, and the stability of the connection between the connecting portion 21 and the side member 10 is ensured. Of course, in other embodiments, only one of the first bracket 3 or the second bracket 4 may be provided, or additional brackets may be provided to increase the welding area between the connecting portion 21 and the side member 10. The present disclosure is not so limited.

With continued reference to fig. 1 and 2, the connection structure further includes a nut plate 5. The nut plate 5 includes oppositely disposed second upper and lower surfaces 50 and 51. The second upper surface 50 is spot welded to the first sub-beam 100 of the longitudinal beam 10. The second lower surface 51 is fixedly connected to the base 20. The nut plate 5 is intended to cooperate with the fastening element 6 and can serve to fix and guide the fastening element 6. The nut plate 5 and the longitudinal beam 10 are fixed in a spot welding mode, deformation of the nut plate 5 and the longitudinal beam 10 in the welding process is reduced to the maximum extent, the verticality of the connecting portion 21 is guaranteed, and therefore a good assembling structure between the auxiliary frame and the main frame 1 is guaranteed.

In some embodiments, the connector 2 further comprises a rib 22 disposed on the first upper surface 200. The base 20 is fixed to the second lower surface 51 of the nut plate 5 by projection welding via the convex strips 22. Projection welding is a highly efficient welding method capable of simultaneously performing multiple spot welding, and can be used instead of arc welding, brazing, and hinge welding. The method has the characteristics of high processing speed and no other consumption except electric power, and is a great characteristic. The difference between projection welding and spot welding is that a plate is provided with a projection in advance, or a profile, a chamfer, or the like, on which current can be concentrated, is used as a mutual contact portion during welding. The convex points are contacted during welding, so that the pressure and the current density on a unit area are improved, an oxide film on the surface of the plate is favorably crushed, heat is concentrated, shunt is reduced, the center distance of spot welding is reduced, multi-point projection welding can be performed at one time, the production efficiency is improved, and the buckling deformation of a joint is reduced. In particular, in the present disclosure, as shown in fig. 4, the connecting element 2 includes three protruding strips 22 circumferentially distributed on the first upper surface 200, so that the three protruding strips 22 can more uniformly fill the gap between the base 20 and the nut seat after projection welding, and on the one hand, the perpendicularity of the connecting portion 21 is effectively ensured. On the other hand, the mounting torque of the fastening element 6 is ensured, and the attenuation of the force between the fastening element 6 and the connecting element 2 is reduced.

With continued reference to fig. 4, in some embodiments, the connector 2 further includes a connection hole 23 disposed on the first upper surface 200. The connection hole 23 extends in a direction in which the first upper surface 200 is directed to the first lower surface 201; i.e. in the second direction B. The connection structure further includes a fastener 6 provided to the sub-frame. The fastening member 6 is engaged with the coupling hole 23 to fixedly couple the sub frame with the coupling member 2. Through so setting up, simple structure makes things convenient for the connection between sub vehicle frame and the main frame 1.

As an alternative embodiment, the connection hole 23 is a smooth hole, and is not hardened. The fastener 6 is a self-tapping screw. This is disclosed promptly on the basis of above-mentioned 21 straightness bases that hang down that promote connecting portion, connecting hole 23 adopts the unthreaded hole design, and fastener 6 that sub vehicle frame connects adopts self-tapping bolt to further reduce the loss of connecting portion straightness deviation to moment of hanging down, promoted locking performance, further promoted durable security performance.

Of course, in other embodiments, the connection hole 23 can also be a threaded hole. The fastener 6 is a bolt member. The present disclosure is not so limited.

It should be noted that the longitudinal beam 10, the nut plate 5, the first bracket 3, and the second bracket 4 in the present disclosure are all made of high-strength steel, and the thicknesses of the nut plate 5, the first bracket 3, and the second bracket 4 are all greater than 2mm. 20# or 45# steel is adopted as the connecting piece 2. Thereby ensuring that the connection structure in the present disclosure has sufficient strength. Of course, in other embodiments, other materials can be used for the connector 2. The present disclosure is not so limited.

According to a second aspect of the present disclosure, a vehicle is proposed, which further includes the above connecting structure. The vehicle in the disclosure can be a passenger vehicle or a cargo vehicle; the vehicle in the disclosure can be a traditional fuel oil bicycle or a new energy vehicle; the present disclosure is not so limited.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice in the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A connecting structure comprises a main frame, an auxiliary frame and a connecting piece; the connecting piece is fixedly connected with the auxiliary frame; wherein the main frame includes a longitudinal beam extending in a first direction; the connecting piece comprises a base and a connecting part; the base comprises a first upper surface and a first lower surface which are oppositely arranged; the connecting part is arranged on the first lower surface and extends along a second direction; the connecting portion includes a first side wall; the first side wall and the longitudinal beam are fixed in a spot welding mode; wherein the first direction and the second direction are perpendicular.

2. The connecting structure according to claim 1, wherein the connecting portion further comprises a second side wall; the second side wall includes a flat surface for spot welding fixation with the stringer.

3. The connecting structure according to claim 1, wherein the main frame includes a side member and a first bracket provided on the side member; the first bracket comprises a first welding surface attached to the first side wall; the first welding surface and the first side wall are fixed in a spot welding mode.

4. The connecting structure according to claim 3, wherein the main frame further includes a second bracket provided on the side member; the second bracket comprises a second welding surface attached to the connecting part; the second welding surface is perpendicular to the first welding surface and is fixed with the connecting part in a spot welding mode.

5. The connection according to claim 1, further comprising a nut plate; the nut plate comprises a second upper surface and a second lower surface which are oppositely arranged; the second upper surface and the longitudinal beam are fixed in a spot welding mode; the second lower surface is fixedly connected with the base.

6. The connecting structure according to claim 5, wherein the connecting member further comprises a rib provided on the first upper surface; the base is fixed with the second lower surface through convex strips in a projection welding mode.

7. The connecting structure according to claim 1, wherein the connecting member further includes a connecting hole provided to the first upper surface; the connecting hole extends along the second direction;

the connecting structure further comprises a fastener arranged on the auxiliary frame; the fastener with the connecting hole cooperation is in order with sub vehicle frame with connecting piece fixed connection.

8. The connection structure according to claim 7, wherein the connection hole comprises a light hole.

9. The connection structure according to claim 7, wherein the fastener comprises a self-tapping screw.

10. A vehicle, characterized in that the vehicle further comprises a connection structure according to any one of claims 1-9.

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