阅读说明：本技术 用于目标假车底盘裙边与边框连接的卡扣式连接结构 (Buckle type connecting structure for connecting skirt edge and frame of target false car chassis ) 是由 刘志恩 邓照 黄维 王亚磊 江厚娟 杜涛 卢炽华 袁守利 王海雄 李超 韩鹏 于 2019-08-22 设计创作，主要内容包括：本发明提出一种用于目标假车底盘裙边与边框连接的卡扣式连接结构,包括设置在底盘裙边上的卡扣定位件及设置在底盘边框上的卡扣紧固件,所述卡扣定位件和卡扣紧固件均为一体成型结构,所述底盘裙边和底盘边框通过所述卡扣定位件与卡扣紧固件的咬合卡扣作用可拆卸式地连接在一起。本发明设计的一种用于目标假车底盘裙边与边框连接的卡扣式连接结构,解决了现有技术中底盘裙边与边框连接方式不能承受较大的作用力,且比较复杂、不易组装和拆卸的问题。(The invention provides a buckle type connecting structure for connecting a chassis skirt edge and a frame of a target false vehicle, which comprises a buckle positioning piece arranged on the chassis skirt edge and a buckle fastener arranged on the chassis frame, wherein the buckle positioning piece and the buckle fastener are both of an integrally formed structure, and the chassis skirt edge and the chassis frame are detachably connected together through the occlusion and buckling effects of the buckle positioning piece and the buckle fastener. The invention designs a buckle type connecting structure for connecting a chassis skirt edge and a frame of a target false car, which solves the problems that the connection mode of the chassis skirt edge and the frame in the prior art can not bear larger acting force, is more complex and is not easy to assemble and disassemble.)

1. The utility model provides a buckle formula connection structure that is used for target false car chassis shirt rim and frame to be connected which characterized in that: including setting up buckle setting element (3) on chassis shirt rim (1) and setting up buckle fastener (4) on chassis frame (2), buckle setting element (3) and buckle fastener (4) are the integrated into one piece structure, chassis shirt rim (1) and chassis frame (2) pass through buckle setting element (3) link together with the interlock buckle effect of buckle fastener (4) is detachable.

2. The snap-in connection structure for connecting the skirt of the chassis and the frame of the target false car as claimed in claim 1, wherein: buckle setting element (3) are including first grafting passageway (3.1) and wedge spacing lug (3.2), buckle fastener (4) are including second grafting passageway (4.1), rectangle locating piece (4.2) and rectangle spacing lug (4.3), through rectangle locating piece (4.2) with the location of buckle setting element (3) and buckle fastener (4) is realized in the cooperation of first grafting passageway (3.1), through wedge spacing lug (3.2) with the assembly direction of buckle setting element (3) and buckle fastener (4) is realized in the cooperation of second grafting passageway (4.1).

3. The snap-in connection structure for connecting the skirt of the chassis and the frame of the target false car as claimed in claim 2, wherein: the upper end of the wedge-shaped limiting convex block (3.2) is provided with a rectangular concave part (3.3) extending inwards, and effective occlusion and clamping limiting of the buckle positioning piece (3) and the buckle fastening piece (4) are realized through the matching of the rectangular concave part (3.3) and the rectangular limiting convex block (4.3).

4. The snap-in connection structure for connecting the skirt of the chassis and the frame of the target false car as claimed in claim 3, wherein: the outwards protruding parts of the wedge-shaped limiting lugs (3.2) are all provided with fillets, and the outer side surfaces of the wedge-shaped limiting lugs (3.2) are all provided with wear-resistant layers.

5. The snap-in connection structure for connecting the skirt of the chassis and the frame of the target false car as claimed in claim 2, wherein: fillets are respectively arranged at the outer parts of the upper end and the bottom end of the rectangular positioning block (4.2), and a wear-resistant layer is arranged on the outer side surface of the rectangular positioning block (4.2).

6. The snap-in connection structure for connecting the skirt of the chassis and the frame of the target false car as claimed in claim 2, wherein: the first inserting channel (3.1) is of a downward U-shaped structure, and the second inserting channel (4.1) is of an upward U-shaped structure.

7. The buckle type connecting structure for connecting the skirt edge and the frame of the target false car chassis according to any one of claims 2 to 6, wherein: the number of the wedge-shaped limiting lugs (3.2) and the rectangular limiting lugs (4.3) is multiple.

8. The snap-in connection structure for connecting the skirt of the chassis and the frame of the target false car as claimed in claim 1, wherein: the chassis skirt edge (1) is of a hollow structure and is composed of three surfaces, namely a top surface, a side surface and a bottom surface, the top surface is an inclined surface with uniform transition, the joint of the top surface and the bottom surface is an arc section, and the buckle positioning piece (3) is arranged on the side surface of the chassis skirt edge (1).

Technical Field

The invention belongs to the technical field of intelligent electric vehicle testing, relates to connection of a target false vehicle chassis skirt edge and a frame, and particularly relates to a long buckle type connection structure for connecting the target false vehicle chassis skirt edge and the frame.

Background

Generally, we use a target fake car instead of an actual vehicle for detecting the dynamic vehicle avoidance capability of an autonomous vehicle to evaluate the safety of the autonomous vehicle. The target false car needs to be adaptable to any collision scenario and can provide accurate positioning, velocity control and test vehicle synchronization data to produce repeatable test results. In the collision repeated test, the test vehicle needs to be pressed on the skirt edge of the chassis of the target false vehicle to give certain lateral and vertical acting forces to the skirt edge of the chassis. Therefore, the connection of the chassis skirt and the frame of the target false car is of great importance. However, the existing connection between the chassis skirt and the chassis frame of the false vehicle mostly adopts a connection component, such as welding, riveting, screwing, fastener connection, etc., and these connection methods have the following disadvantages:

1. because the skirt edge and the frame of the chassis which are connected together need to bear force transmission and bear certain acting force, the skirt edge and the frame can not be stably connected by using the existing connection mode;

2. because the chassis skirt edge and the frame which are connected together bear force transmission and acting force, fatigue failure and damage often occur, so that disassembly and replacement are needed, and some of the existing connection modes cannot be disassembled and some are troublesome, so that the chassis skirt edge and the frame cannot be disassembled and replaced;

3. because the length of the chassis skirt and the frame which are connected together is longer, the installation and the assembly are troublesome by adopting the existing connecting mode, and the chassis skirt and the frame are not easy to detach.

Therefore, it is necessary to design a long snap-in connection structure suitable for connecting the skirt of the chassis and the frame of the chassis of the target false car, so that the long snap-in connection structure can bear the functions of force transmission and load bearing and is easy to assemble and disassemble.

Disclosure of Invention

In view of the above, the invention provides a buckle type connecting structure for connecting a skirt edge and a frame of a chassis of a target false car, so as to solve the problems that a connecting mode of the skirt edge and the frame of the chassis in the prior art cannot bear large acting force, is complex and is not easy to assemble and disassemble.

Therefore, the technical scheme adopted by the invention for solving the technical problem is as follows:

the utility model provides a buckle formula connection structure that is used for target false vehicle chassis shirt rim and frame to be connected, is including setting up the buckle setting element on the chassis shirt rim and setting up the buckle fastener on the chassis frame, buckle setting element and buckle fastener are integrated into one piece structure, chassis shirt rim and chassis frame pass through the interlock buckle effect of buckle setting element and buckle fastener links together detachablely, compares with current connected mode, has the installation and dismantles the advantage convenient, easily maintains and change.

Further, the buckle positioning piece comprises a first inserting channel and a wedge-shaped limiting lug, the buckle fastener comprises a second inserting channel, a rectangular positioning piece and a rectangular limiting lug, the rectangular positioning piece is matched with the first inserting channel to realize the positioning of the buckle positioning piece and the buckle fastener, and the wedge-shaped limiting lug is matched with the second inserting channel to realize the assembly guiding of the buckle positioning piece and the buckle fastener.

Furthermore, the upper end of the wedge-shaped limiting convex block is provided with an inward extending rectangular concave part, and the effective occlusion and clamping limiting of the buckle positioning piece and the buckle fastening piece are realized through the matching of the rectangular concave part and the rectangular limiting convex block.

Furthermore, the outwards protruding parts of the wedge-shaped limiting lugs are all provided with fillets, and the outer side faces of the wedge-shaped limiting lugs are all provided with wear-resistant layers.

Furthermore, fillets are respectively arranged on the outer portions of the upper end and the bottom end of the rectangular positioning block, and a wear-resistant layer is arranged on the outer side face of the rectangular positioning block.

Furthermore, the first inserting channel is of a downward U-shaped structure, and the second inserting channel is of an upward U-shaped structure.

Furthermore, the length of the buckle positioning piece and the length of the buckle fastening piece are adjustable and are generally longer, so that the number of the wedge-shaped limiting lugs and the number of the rectangular limiting lugs are multiple.

Further, the chassis shirt rim is hollow structure, and comprises top surface, side and three face in bottom surface, the top surface be the inclined plane of even transition, the junction of top surface and bottom surface is the circular arc section, the buckle setting element sets up on the side of chassis shirt rim, the buckle fastener sets up on the side that chassis frame and chassis shirt rim are connected.

Compared with the prior art, the invention has the beneficial effects that:

1. the buckle type connecting structure for connecting the skirt edge of the chassis and the frame of the target false car can meet certain rigidity and strength requirements when in use, can bear certain lateral and vertical acting force when the peak stress is not reached, the buckle positioning piece transmits the borne acting force to the buckle fastening piece, and the fillet arranged on the buckle fastening piece can effectively prevent stress concentration to a certain extent, so that the connection failure of the skirt edge of the chassis and the frame is avoided, and the better connection and force transmission of the skirt edge of the chassis and the frame are realized;

2. according to the buckle type connecting structure for connecting the skirt edge and the frame of the chassis of the target false car, the buckle positioning piece and the buckle fastener are assembled to realize clamping and limiting through the rectangular limiting lug and the wedge-shaped limiting lug, a longer longitudinal length can be allowed, and the wear-resistant layer is arranged on the surface of the buckle positioning piece matched with the buckle fastener, so that the wear and the connection failure of the buckle positioning piece and the buckle fastener can be effectively prevented; the assembly can be replaced when the connection between the chassis skirt and the frame fails by applying a certain acting force to the chassis skirt and the frame to detach the chassis skirt and the frame laterally, so that the production and manufacturing cost can be effectively reduced, and the utilization rate of the buckle assembly can be improved;

3. the buckle type connecting structure for connecting the skirt edge and the frame of the chassis of the target false car, provided by the invention, can enable the skirt edge and the frame of the chassis to be correspondingly assembled together, has a simple structure, is convenient to assemble, can meet certain rigidity and strength requirements, and effectively reduces the production and manufacturing cost of the skirt edge and the frame of the chassis.

Drawings

Fig. 1 is a schematic overall appearance diagram of the snap-in connection structure of the present invention.

Fig. 2 is a schematic structural view of the snap positioning element in fig. 1.

Fig. 3 is a schematic structural view of the snap fastener of fig. 1.

FIG. 4 is a top view of a chassis skirt and rim connected using the snap-in connection of the present invention.

Fig. 5 is a sectional view a-a in fig. 4.

Shown in the figure:

1-chassis skirt edge, 2-chassis frame, 3-buckle positioning piece, 3.1-first plug-in channel, 3.2-wedge-shaped limit lug, 3.3-rectangular concave part, 4-buckle fastener, 4.1-second plug-in channel, 4.2-rectangular positioning piece and 4.3-rectangular limit lug.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention.

As shown in fig. 1-5, the present embodiment is a snap-in connection structure for connecting a chassis skirt and a frame of a target false vehicle, and includes a snap-in positioning element 3 disposed on the chassis skirt 1 and a snap-in fastening element 4 disposed on the chassis frame 2, and the chassis skirt 1 and the chassis frame 2 are connected by the snap-in action of the snap-in positioning element 3 and the snap-in fastening element 4.

Specifically, chassis shirt rim 1 is hollow structure, can effectually realize the lightweight of chassis shirt rim 1, can optimize the structure and the appearance design of chassis shirt rim 1 simultaneously, chassis shirt rim 1 comprises three face in top surface, side and bottom surface, the top surface be the inclined plane of even transition, the junction of top surface and bottom surface is the circular arc section, buckle location 3 sets up on the side of chassis shirt rim 1, buckle fastener 4 sets up on the side of chassis frame 2.

Specifically, as shown in fig. 2-3, the buckle positioning element 3 includes a first plug-in channel 3.1 and a wedge-shaped limit projection 3.2, the buckle fastener 4 includes a second plug-in channel 4.1, a rectangular positioning block 4.2 and a rectangular limit projection 4.3, the rectangular positioning block 4.2 is matched with the first plug-in channel 3.1 to position the buckle positioning element 3 and the buckle fastener 4, and the wedge-shaped limit projection 3.2 is matched with the second plug-in channel 4.1 to guide the assembly of the buckle positioning element 3 and the buckle fastener 4.

Specifically, the upper end of the wedge-shaped limiting convex block 3.2 is provided with a rectangular concave part 3.3 extending inwards, and the effective occlusion and clamping limiting of the buckle positioning piece 3 and the buckle fastening piece 4 are realized through the matching of the rectangular concave part 3.3 and the rectangular limiting convex block 4.3.

Specifically, the cooperation between the spacing lug of wedge 3.2 of buckle setting element 3 and the second grafting passageway 4.1 of buckle fastener 4 is interference fit, because chassis shirt rim 1 and chassis frame 2 generally all select for use the aluminum alloy material, such material has certain elastic deformation allowability, certain effort makes the spacing lug of wedge 3.2 insert in second grafting passageway 4.1 downwards when the assembly, the spacing lug of rectangle 4.3 inserts in rectangle concave part 3.3 simultaneously, it is spacing with the chucking effectively to have realized buckle setting element 3 and buckle fastener 4, can prevent effectively that up-and-down beat and lateral shifting from appearing in chassis shirt rim 1 and chassis frame 2 after being connected.

Specifically, the fillet is all chamfered to the outside convex part of wedge spacing lug 3.2, just the lateral surface of wedge spacing lug 3.2 all is equipped with the wearing layer, the fillet is all chamfered to the upper end of rectangle locating piece 4.2 and bottom outside, just the lateral surface of rectangle locating piece 4.2 is equipped with the wearing layer, and the setting of wearing layer can effectively prevent the wearing and tearing inefficacy that causes the interlock position of fastener when installation and dismantlement.

Specifically, the first plugging channel 3.1 is a downward U-shaped structure, and the second plugging channel 4.1 is an upward U-shaped structure.

Specifically, buckle setting element 3 and buckle fastener 4 are integrated into one piece structure, buckle setting element 3 and buckle fastener 4's length is adjustable, because chassis shirt rim 1 in this embodiment is longer with chassis frame 2, so this buckle setting element 3 and buckle fastener 4's length is also longer, and under the longer condition of length, the quantity of the spacing lug 3.2 of wedge and the spacing lug 4.3 of rectangle just need set up a plurality ofly, makes buckle setting element 3 and buckle fastener 4's connection more firm.

The buckle type connecting structure for connecting the skirt edge of the chassis and the frame of the target false car, which is related by the embodiment, changes the existing forms of welding, riveting, screwing, fastener connection and the like between the skirt edge of the chassis and the frame into buckle type connection, and detachably connects the skirt edge of the chassis and the frame together through a special buckle type connecting structure (shown in figure 1), thereby having the advantage of convenient installation and disassembly; a plurality of buckling pieces can be arranged for the connection between the two metal pieces with longer length, so that the advantage of stable connection is achieved; in addition, the setting of fillet can effectively prevent stress concentration to a certain extent on the buckle fastener, and this has just avoided being connected of chassis shirt rim and frame to become invalid, has the advantage that dispersion biography power.

In the above embodiment, the buckle type connection structure is applied to the connection between the skirt edge and the frame of the chassis of the target false car, and the structure can also be applied to the connection between other two metal pieces with longer lengths, and according to different application scenes, different buckle positioning pieces and appearance structures of buckle fasteners are designed, such as the number of wedge-shaped limit bumps and rectangular limit bumps, the arrangement of external fillets, the arrangement of contact part wear-resistant layers and the like.

It is to be understood that no matter how much of this specification appears, such as in the prior art or common general knowledge. The present embodiments are illustrative only and not intended to limit the scope of the present invention, and modifications and equivalents thereof by those skilled in the art are considered to fall within the scope of the present invention as set forth in the claims.