KR102107411B1 - A Joint Material for Chassis Frame and Variable type Chassis Module of Vehicle using the same - Google Patents

Abstract

According to the present invention, a chassis connecting member for connecting horizontal and vertical frames to each other which constitute a chassis comprises: a first beam-shaped protrusion parallel to the horizontal frame; a second beam-shaped protrusion bent from an end of one side of the first protrusion toward a lower surface of the first protrusion so as to be inclined toward the outside of the first protrusion; and a stepped portion protruding toward the lower surface of the first protrusion from a coupling portion of the first protrusion and the second protrusion so as to be parallel to the vertical frame, and having one side surface to which at least one of the horizontal and vertical frames is coupled. On one side surface of the stepped portion, formed are a plurality of steps in which a first surface parallel to the vertical frame and a second surface parallel to the horizontal frame appear alternately. The chassis connecting member and a variable vehicle chassis module the using same can make easy manufacturing of a vehicle chassis, which requires small quantity batch production even with the same parts.

Description

{A Joint Material for Chassis Frame and Variable type Chassis Module of Vehicle using the same}

The present invention relates to a vehicle undercarriage connecting member and a variable undercarriage module of a vehicle using the same, and more specifically, a position where the frames are coupled by providing a plurality of positions at which the frame is coupled to a connecting member to which a frame constituting the undercarriage is coupled. It is configured to be able to easily change the length and width of the undercarriage, so that even if the same parts are used, the undercarriage connecting member and the variable undercarriage of the vehicle using the undercarriage connecting member that can facilitate the production of undercarriage of a vehicle requiring small quantities of multiple items It's about modules.

In general, the vehicle includes all vehicles such as ordinary automobiles, electric vehicles, or working vehicles such as tractors, and the structure of these vehicles is largely referred to as an undercarriage or chassis and a body or body. It is divided into upper structures.

Since these vehicles generally vary in length and width of the chassis depending on the model, in the case of an existing automobile production line, parts of different sizes (frames, etc.) used for manufacturing chassis are manufactured separately for each vehicle model. It was operated in the same way.

However, the above-described conventional vehicle production method does not have a problem in the case of mass production of small items like a conventional car, but the production of parts is required for a vehicle that requires small quantity production of multiple items such as an electric vehicle or a work vehicle recently developed. And there was a problem that the production cost of the vehicle is increased due to the increase in the management cost and the production efficiency is lowered due to the increase in the defect rate due to the mixing of parts.

In order to solve the problems of the prior art, there is a need for a technology capable of manufacturing chassis of various sizes using the same parts. In this regard, [Document 1] and [Document 2], etc. A technique for undercarriage construction is disclosed.

However, even in the case of the following prior documents, only the contents of a structure capable of varying the vehicle width depending on the road condition while the vehicle is being produced are disclosed, and manufacturing vehicle chassis of various sizes with the same parts in the production stage of the vehicle Since it is not related to the technology, there is a problem that still has the disadvantages of the above-described prior art.

[Document 1] Korean Registered Patent No. 10-1770944 (announced on August 24, 2017)

[Document 2] Korean Registered Patent No. 10-1610513 (announced on April 20, 2016)

The present invention is to solve the problems of the prior art as described above, the object of the present invention is to provide a plurality of positions where the frame is coupled to the connecting member to which the frame constituting the chassis is coupled, where the frame is coupled. It is configured to be able to easily change the length and width of the undercarriage, so that even if the same parts are used, the undercarriage connecting member and the variable undercarriage of the vehicle using the undercarriage connecting member that can facilitate the production of undercarriage of a vehicle requiring small quantities of multiple items It is intended to provide a module.

In order to achieve the above object, the undercarriage connecting member according to the present invention is a undercarriage connecting member that combines a horizontal frame and a vertical frame constituting a chassis (chassis) to each other, the first projection having a beam shape parallel to the horizontal frame. , A second protrusion having a beam shape bent in a direction toward a lower surface of the first protrusion from one end of the first protrusion so as to incline outwardly of the first protrusion, and the first protrusion and the second protrusion to be parallel to the vertical frame In the engaging portion of the projecting in the direction of the lower surface of the first projection, and includes a step portion that is coupled to at least one of the horizontal frame and the vertical frame on one side, the side of the step portion, parallel to the vertical frame It is characterized in that a plurality of stepped steps in which the first surface and the second surface parallel to the horizontal frame alternately appear are formed.

In addition, at one side of the upper surface of the first protrusion, at least one coupling protrusion or coupling groove to which a connection frame connected to the front module or rear module of the vehicle is coupled is formed spaced apart from each other along the longitudinal direction of the first protrusion. do.

In addition, a side extension frame parallel to the vertical frame is coupled to an end of the second protrusion.

In addition, the undercarriage connecting member according to the present invention, the undercarriage connecting member for coupling the horizontal frame and the vertical frame constituting the chassis (chassis) to each other, the first projection of the beam shape parallel to the horizontal frame, and the vertical frame A step portion protruding from the one end of the first protrusion to be parallel to the lower surface of the first protrusion, and including at least one of the horizontal frame and the vertical frame coupled to one side of the first protrusion to be parallel, the one side of the step portion, It is characterized in that a plurality of stepped steps are formed in which the first surface parallel to the vertical frame and the second surface parallel to the horizontal frame alternate with each other.

In addition, the outer surface of the stepped portion adjacent to the upper surface of the first projecting portion is inclined to the outside of the first projecting portion in order to prevent interference with the front module or the rear module of the vehicle coupled to the engaging projection or the engaging groove. It is characterized by forming.

In addition, the undercarriage connecting member according to the present invention, the undercarriage connecting member for coupling the horizontal frame and the vertical frame constituting the chassis (chassis) to each other, the first projection of the beam shape parallel to the horizontal frame, parallel to the vertical frame A step portion protruding from the one end portion of the first protrusion portion toward the lower surface of the first protrusion portion, wherein at least one of the horizontal frame and the vertical frame is coupled to one side, and the first side from the outer surface side of the step portion Including a second protrusion protruding outward of the protrusion, on one side of the step portion, there are a plurality of stepped steps in which the first surface parallel to the vertical frame and the second surface parallel to the horizontal frame alternate with each other. It is characterized by being formed.

In addition, the variable undercarriage module of a vehicle according to the present invention is a variable undercarriage module of a vehicle in which a plurality of frames are combined to form an undercarriage module, a pair of horizontal frames spaced apart from each other in the vertical direction, left and right of the horizontal frame A pair of vertical frames are disposed on each, and a connecting member connected to each of the corners of the square shape so as to combine the horizontal frame and the vertical frame in a square shape, wherein the connecting members are respectively parallel to the horizontal frame. The first protrusion in the beam shape, the second protrusion in the beam shape bent in the direction of the lower surface of the first protrusion from one end of the first protrusion to incline outwardly of the first protrusion, and the first to be parallel to the vertical frame Protruding in the direction of the lower surface of the first protrusion from the engaging portion of the first protrusion and the second protrusion, the horizontal frame on one side At least one of the vertical frames includes a stepped portion, and on one side of the stepped portion, a plurality of stepped steps in which a first surface parallel to the vertical frame and a second surface parallel to the horizontal frame appear alternately with each other. It is characterized by being formed.

In addition, the width and length of the undercarriage module vary depending on the position where the horizontal frame and the vertical frame are respectively coupled to one of the first and second surfaces of the connecting member.

In addition, a pair of front module frames connected to the front module of the vehicle and disposed in the left and right directions of the horizontal frame, and a pair of rear modules connected to the rear module of the vehicle and respectively disposed in the left and right directions of the horizontal frame. Further comprising a module frame, the connecting member connected to each of the upper corners of the square shape is formed on at least one first coupling protrusion to which any one of the front module frames is coupled to one side of the upper surface of the first protrusion , The connecting members respectively connected to the lower edge portions of the square shape are characterized in that at least one second coupling protrusion is formed on one side of the upper surface of the first protrusion to which one of the rear module frames is coupled.

In addition, a pair of front module frames connected to the front module of the vehicle and disposed in the left and right directions of the horizontal frame, and a pair of rear modules connected to the rear module of the vehicle and respectively disposed in the left and right directions of the horizontal frame. Further comprising a module frame, the connecting member connected to each of the upper corners of the square shape is formed with at least one first coupling groove in which any one of the front module frames is coupled to one side of the upper surface of the first protrusion , The connecting members respectively connected to the lower edge portions of the square shape are characterized in that at least one second coupling groove to which any one of the rear module frames is coupled is formed on one side of the upper surface of the first protrusion.

In addition, the outer side of the square shape further includes a pair of side extension frames arranged parallel to the vertical frame, and the ends of the side extension frames are respectively coupled to the ends of the second protrusions of the connecting member. do.

In addition, the vehicle is an electric vehicle, characterized in that at least one battery is installed inside the rectangular shape to form a bottom surface of the undercarriage module.

In addition, the variable undercarriage module of a vehicle according to the present invention is a variable undercarriage module of a vehicle in which a plurality of frames are combined to form an undercarriage module, a pair of horizontal frames spaced apart from each other in the vertical direction, left and right of the horizontal frame A pair of vertical frames are disposed on each, and the connecting members are respectively connected to the corner portions of the square shape so as to combine the horizontal frame and the vertical frame in a square shape, wherein the connecting members are beams parallel to the horizontal frame, respectively. A first protrusion having a shape, and a stepped portion protruding from the one end of the first protrusion toward the lower surface of the first protrusion so as to be parallel to the vertical frame, and at least one of the horizontal frame and the vertical frame coupled to one side. Including, the first surface parallel to the vertical frame and the horizontal frame on one side of the step portion It is characterized in that a plurality of stepped steps with alternating second surfaces parallel to the frame are formed.

In addition, a pair of side extension frames, which are arranged parallel to the vertical frame, respectively, on the outer side of the square shape, and the connecting member, respectively, protrudes from the outer side of the step portion to the outside of the first protrusion. Further comprising a projection, the end of the side extension frame is characterized in that each coupled to the end of the second projection of the connecting member.

The undercarriage connecting member according to the present invention and a variable undercarriage module of a vehicle using the same include a first surface parallel to the vertical frame and the horizontal frame on one side of a connecting member that combines the horizontal frame and the vertical frame constituting the vehicle chassis. The length of the undercarriage according to the position where the horizontal frame and the vertical frame are respectively coupled to one of the first and second surfaces of the connecting member by forming a plurality of stepped steps where the parallel second surfaces alternately appear. Since the width and width can be easily changed, even if the same parts are used, there is an advantage of facilitating the manufacture of a chassis for a vehicle that requires small quantities of multiple items.

1 is a view showing the overall configuration of a chassis to which the chassis connecting member according to the first embodiment of the present invention is applied,
Figure 2 is a perspective view of the undercarriage connecting member according to the first embodiment of the present invention,
3 is a perspective view of a chassis connecting member according to a second embodiment of the present invention,
4 and 5 are an exploded perspective view and a combined perspective view of a variable vehicle chassis module of a vehicle according to a third embodiment of the present invention to which the chassis connection member of FIG. 2 is applied, respectively.
6 and 7 are exploded and combined perspective views, respectively, of the variable undercarriage module of the vehicle according to the third embodiment of the present invention to which the undercarriage connecting member of FIG. 3 is applied.

In the present specification, exemplary embodiments of the present invention will be exemplarily described with reference to the accompanying drawings, but the present invention is not limited thereto and may be implemented in various various forms different from the illustrated embodiments.

Further, when it is said that a part is "connected (connected, contacted, coupled)" with another part in the specification, it is not only "directly connected" but also "indirectly" with another member in between. It is also included.

In addition, when a certain part of the specification "includes" a certain component, this means that other components may be further provided instead of excluding other components unless specifically stated otherwise.

In addition, in the specification, the singular expression means that the plural expression is included unless the context clearly indicates otherwise.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the present invention, for convenience of explanation, the case where the chassis is an chassis for an electric vehicle is described as an example, but the present invention is not limited thereto, and the present invention can be applied not only to an existing vehicle but also to chassis of various various working vehicles.

(Example 1)

1 is a view showing the overall configuration of a chassis to which the chassis connecting member according to the first embodiment of the present invention is applied, and FIG. 2 is a perspective view of the chassis connecting member according to the first embodiment of the present invention.

The undercarriage connecting member 20 according to the present embodiment includes a center module 1 of a undercarriage formed in a flat plate shape, and a front module 2 and a rear module 3 coupled to the front and rear ends of the center module 1, respectively. It is a component that is used to combine beam-shaped or beam-shaped frames constituting each other.

At this time, the central module (1) is configured to perform a function of supporting a body (body) from the bottom, in the case of this embodiment, a battery module (B) for driving an electric vehicle may be installed.

In addition, the front module (front end module) (2) is a configuration in which a motor system for driving a vehicle, a front wheel system, a steering system, a cooling system, and other body support frames are installed, and the rear end module ( 3) is a configuration in which a rear wheel system for driving a vehicle and other body support frames are installed.

On the other hand, the connecting member 20 is to combine the horizontal frame (not shown), which is the width direction frame of the chassis constituting the central module 1, and the vertical frame (not shown), which is the longitudinal frame of the chassis, The first protrusion 21, the second protrusion 22 extending from the first protrusion 21, and the stepped portion 23 formed in the engaging portion of the first protrusion 21 and the second protrusion 22 It includes.

First, the first protrusion 21 is formed in a beam shape parallel to the horizontal frame (not shown). When assembling the chassis, a horizontal frame or a vertical frame may be coupled to the lower surface.

In addition, the second protrusion 22 is made of a beam shape bent in the direction of the lower surface of the first protrusion 21 from one end of the first protrusion 21 so as to be inclined to the outside of the first protrusion 21 .

Accordingly, one end of the second protrusion 22 is coupled to one end of the first protrusion 21, and the other end has an outer direction (ie, a horizontal frame and a vertical frame) of the first protrusion 21. To the outside of the square-shaped undercarriage).

In addition, the step portion 23 is configured to protrude in the direction of the lower surface of the first protrusion 21 at the center of the coupling portion of the first protrusion 21 and the second protrusion 22 so as to be parallel to the vertical frame. .

In addition, one side surface of the step portion 23 to which at least one of the horizontal frame and the vertical frame is combined (specifically, the side opposite to the rectangular frame undercarriage formed by the horizontal frame and the vertical frame) is the vertical frame. A plurality of stepped steps are formed in which the first surface 23a parallel to and the second surface 23b parallel to the horizontal frame alternate with each other.

In this embodiment, as an example, the step portion 23 is configured such that the first surface 23a and the second surface 23b are alternately formed by three, respectively, and the chassis connection according to the present embodiment is configured as described above. When the chassis 20 is manufactured, the length and width of the chassis may be simultaneously changed according to a position where the horizontal frame and the vertical frame are coupled to one of the first surface 23a and the second surface 23b, respectively. .

As an example, when one end of the horizontal frame is coupled to the lower surface of the first protrusion 21 or the first surface 23a of the stepped portion 23 adjacent to the lower surface of the first protrusion 21 The width of the undercarriage when the width of the undercarriage becomes the maximum and one end of the horizontal frame is coupled to the first surface 23a located at the end side of the step portion 23 or the second surface 23b located at the end side This becomes the minimum.

In addition, when one end of the vertical frame is coupled to the lower surface of the first protrusion 21 or the lower surface of the first protrusion 21, the first surface 23a of the step 23 adjacent to the difference The length of the chassis is minimized when the length of the stage is minimized and one end of the vertical frame is coupled to the first surface 23a located at the end side of the step portion 23 or the second surface 23b located at the end side. It becomes the maximum.

Meanwhile, at least one coupling protrusion or coupling groove to which the connection frame F1 connected to the front module 1 or the rear module 2 of the vehicle is coupled may be formed on one side of the outer surface of the first protrusion 21. In this embodiment, as an example, a plurality of coupling protrusions 21a are formed on the upper surface of the first protrusion 21.

In this case, it is preferable that the engaging projections 21a are formed to be spaced apart from each other along the longitudinal direction of the first protrusion 21, and the distance between the number of the engaging projections 21a and the distance from the chassis can be varied. It is more preferably set to correspond to the number of cases and the length to be changed.

When the chassis is manufactured according to the above configuration, even when the width of the chassis is changed by the chassis connecting member 20 according to the present embodiment, the front module 1 and the rear module 2 have the advantage of being commonly used. have.

In addition, as described above, a side extension frame F2 parallel to the vertical frame may be coupled to the other end of the second protrusion 22 exposed in the outer direction of the first protrusion 21, if necessary. The side extension frame F2 serves to increase the width of the undercarriage and reinforce the side strength of the undercarriage.

The undercarriage connecting member 20 according to the present invention configured as described above is a horizontal frame (not shown), a vertical frame (not shown), a connecting frame (F1), and a side extension frame (such as by welding or bolting). F2).

(Example 2)

3 is a perspective view showing the shape of the undercarriage connecting member 121 according to the second embodiment of the present invention.

In the case of the undercarriage connecting member 120 according to this embodiment, as described in the first embodiment, the transverse frame (not shown), which is the width frame of the undercarriage constituting the central module 1, and the longitudinal frame of the undercarriage, It is intended to combine a vertical frame (not shown) with each other, and includes a first protrusion 121 and a stepped part 123 extending from one end of the first protrusion 121.

First, the first protrusion 121 is formed in a beam shape parallel to the horizontal frame (not shown). When assembling the undercarriage, a horizontal frame or a vertical frame may be coupled to the lower surface.

In addition, the step portion 123 is configured to protrude in the direction of the lower surface of the first protrusion 121 from one end of the first protrusion 121 so as to be parallel to the vertical frame.

At this time, the first surface 123a and the second surface 123b, as described in the first embodiment described above, are formed on one side of the step portion 123 to which at least one of the horizontal frame and the vertical frame are combined. A plurality of stepped steps that are alternately formed are formed, and a detailed description thereof is the same as that of the first embodiment, so a duplicate description will be omitted here.

However, in the case of this embodiment, the outer surface of the stepped portion 123 adjacent to the upper surface of the first projecting portion 121 and the front module or the rear module of the vehicle coupled to the engaging projection (121a) as described later. In order to prevent interference, it is preferable to be configured to form an inclined surface inclined to the outside of the first protrusion 121.

In addition, the undercarriage connecting member 120 according to the present embodiment is configured to further include a second protruding portion 122 protruding outward of the first protruding portion 121 from one side of the outer surface of the stepped portion 123, In this embodiment, as an example, the second protrusion 122 is configured in a beam shape parallel to a horizontal frame so that an end is exposed in an outer direction of the first protrusion 121.

In addition, a side extension frame F2 parallel to the vertical frame may be coupled to the end of the second protrusion 122 exposed in the outer direction of the first protrusion 121 as described above. Since the description overlaps with the first embodiment described above, it will be omitted here.

However, according to the configuration as described above, when the undercarriage connecting member 120 according to the present embodiment is compared with the undercarriage connecting member 20 according to the first embodiment, the second protrusion 122 is horizontally extended in the width direction of the undercarriage. Due to the structure, the area of the central module 1 is increased when compared with the first embodiment in which the second protrusion 22 extends in an inclined direction.

Meanwhile, at one side of the outer surface of the first protrusion 121, at least one coupling protrusion 121a (or coupling groove) to which the connection frame F1 connected to the front module 1 or rear module 2 of the vehicle is coupled is coupled. Although it may be formed, a detailed description thereof is the same as that of the first embodiment described above, so a duplicate description will be omitted here.

(Example 3)

4 and 5 are exploded and combined perspective views of a variable undercarriage module of a vehicle according to a third embodiment of the present invention to which the undercarriage connecting member of FIG. 2 is applied, respectively. FIGS. 6 and 7 are respectively undercarriage connecting members of FIG. 3 It is an exploded perspective view and a combined perspective view of a variable undercarriage module of a vehicle according to a third embodiment of the present invention.

The variable undercarriage module of the vehicle according to this embodiment is configured by combining a plurality of frames constituting the undercarriage, and for this purpose, the variable undercarriage module is a pair of horizontal frames 11 and 12 and a pair of vertical frames. (13,14), and a connecting member (30,40,50,60) for coupling the frames.

The horizontal frames 11 and 12 are composed of a first horizontal frame 11 and a second horizontal frame 12 that are spaced apart from each other in the vertical direction, and the vertical frames 13 and 14 are the horizontal frames 11 , 12) is composed of a first vertical frame 13 and a second vertical frame 14 disposed on the left and right sides, respectively.

In addition, the connecting member (30,40,50,60) is intended to combine the horizontal frame (11,12) and the vertical frame (13,14) in a square shape, the connecting member (30,40,50, 60) is connected to any one of the one end of the horizontal frame (11,12) and one end of the vertical frame (13,14), respectively, at the corners of the square shape.

The combination of the rectangular frame and the connecting member formed as described above forms the central module 1 shown in FIG. 1 among all chassis modules.

In addition, the variable undercarriage module is connected to the front module (2) of the vehicle, a pair of front module frames (71,72) disposed in the left and right directions of the horizontal frame (specifically, the first horizontal frame) And a pair of rear module frames 73 and 74 which are connected to the rear module 3 of the vehicle and are respectively disposed in the left and right directions of the horizontal frame (specifically, the second horizontal frame).

At this time, the connecting member (30,40,50,60) can be preferably implemented by any one of the connecting member (20,120) according to the first embodiment or the second embodiment described above, in this embodiment is an example As the connection member (30,40,50,60) was configured in the same manner as the connection member 20 according to the first embodiment.

Therefore, in the following description, parts not mentioned in the description of the specific configuration of the connecting members 30, 40, 50 and 60 are replaced with the contents described with reference to FIG. However, only the reference numerals are assigned differently.

In addition, the first connecting member 30 and the second connecting member 40 coupled to the left and right sides of the first horizontal frame 11 are symmetrical to each other, and to the left and right of the second horizontal frame 12, respectively. The third connecting member 50 and the fourth connecting member 60 to be coupled are symmetrical to each other with the first connecting member 30 and the second connecting member 40.

Therefore, hereinafter, for the convenience of explanation, the configuration of the connecting members 30, 40, 50, and 60 includes one end 11a of the first horizontal frame 11 and one end of the first vertical frame 13 ( The first connection member 30 coupled to 13a) will be mainly described, and redundant descriptions of the remaining connection members 40, 50, and 60 will be omitted.

However, in this case, the other connecting members 40, 50, and 60 have a shape difference from the first connecting member 30 (that is, symmetrical shape with respect to each other or symmetrical with each other) according to the arrangement position, thereby being coupled to each other. The type and / or direction of the frame is different.

The first connecting member 30, respectively, the first projection 31 of the beam shape parallel to the first horizontal frame 11, the first projection 31 to be inclined to the outside of the first projection 31 ), The first protrusion 31 and the second so as to be parallel to the second projection 32 of the beam shape bent in the direction of the lower surface of the first projection 31 from one end portion, and the first vertical frame 13 It comprises a step portion (33) protruding in the direction of the lower surface of the first protrusion 31 in the engaging portion of the projection (32).

In addition, at least one of the first horizontal frame 11 and the first vertical frame 13 is coupled to one side of the stepped portion 33 facing one end 11a of the first horizontal frame 11. do.

To this end, a first surface (not shown) parallel to the first vertical frame 13 and the first horizontal frame 11 are provided on one side of the stepped portion 33 as described in the first embodiment. A plurality of stepped steps are formed in which parallel second surfaces (not shown) alternate.

According to the configuration as described above, in the variable undercarriage module of the vehicle according to the present invention, the first horizontal frame 11 and the first vertical frame 13 are among the first and second surfaces of the first connecting member 30. The width and length of the undercarriage module may be simultaneously changed according to a position coupled to any one.

In addition, in the case of the second connecting member 40, the first horizontal frame 11 and the second vertical frame are formed on one side of the step portion 43 facing the other end 11b of the first horizontal frame 11 A plurality of stepped steps to which at least one of (14) is coupled is formed.

Likewise, in the case of the third connecting member 50, the second horizontal frame 12 and the first vertical frame on one side of the stepped portion 53 facing the one end 12a of the second horizontal frame 12 A plurality of stepped steps to which at least one of (13) is coupled is formed, and even in the case of the fourth connecting member 60, the stepped portion 63 facing the other end 12b of the second horizontal frame 12 ) A plurality of stepped steps to which at least one of the second horizontal frame 12 and the second vertical frame 14 is coupled is formed on one side of).

On the other hand, the front side of the upper edge portion of the square shape, that is, the first protrusions 31 and 41 of the first and second connecting members 30 and 40 respectively coupled to both ends of the first horizontal frame 11 At least one first coupling protrusion 31a, 41a to which any one of the module frames 71, 72 is coupled is formed.

Specifically, a first coupling protrusion 31a to which a first front module frame 71 is coupled is formed in the first protrusion 31 of the first connection member 30, and the second connection member 40 is formed. A first coupling protrusion 41a to which the second front module frame 72 is coupled is formed in the first protrusion 41.

Similarly, the rear of the first edge portion 51 and 61 of the third and fourth connecting members 50 and 60 respectively coupled to both ends of the square-shaped lower edge portion, that is, the second horizontal frame 12 is also provided at the rear side. At least one second coupling protrusion 51a, 61a to which any one of the module frames 73, 74 is coupled is formed.

Specifically, a second coupling protrusion 51a to which a first rear module frame 73 is coupled is formed in the first protrusion 51 of the third connection member 50, and the fourth connection member 60 A second coupling protrusion 61a to which the second rear module frame 74 is coupled is formed in the first protrusion 61.

In this embodiment, as an example, the first coupling protrusions 31a, 41a and the second coupling protrusions 51a, 61a are respectively the first protrusions 31, 41, 51 in the corresponding connection members 30, 40, 50, 60. , 61) was configured to be spaced apart from each other along the longitudinal direction of the first protrusions 31, 41, 51, 61 on one side of the upper surface.

Further, in this embodiment, as an example, the connecting members 30, 40, 50, and 60 are configured to be connected to the front module frames 71, 72 and the rear module frames 73, 74, respectively, by engaging projections. If necessary, it may be configured to be connected to the front module frame (71,72) and the rear module frame (73,74) by a coupling groove.

In addition, the variable undercarriage module of the vehicle according to the present embodiment further adds a pair of side extension frames 81 and 82 which are arranged parallel to the vertical frames 13 and 14, respectively, on the outside of the square shape, if necessary. It may be configured to include.

In this case, both ends of the expansion frames 81 and 82 are coupled to the ends of the second protrusions 32, 42, 52, and 62 of the connecting members 30, 40, 50, and 60, respectively, to increase the width of the undercarriage module. It performs the function of expanding and reinforcing the side strength of the undercarriage module.

The case of manufacturing the chassis using the variable chassis module according to the present embodiment configured as described above is illustrated in FIG. 5, even when the same components are used, the horizontal frames 11 and 12 and the vertical frames 13, 14) It can be seen that a chassis module having various widths and lengths can be manufactured according to a position where the connecting members 30, 40, 50, and 60 are coupled.

As an example, both ends of the horizontal frames 11 and 12 are respectively coupled to the lower surface of the first protrusion or the lower surface of the stepped portion adjacent to the lower surface of the first protrusion for the connecting member to which they are coupled, and the vertical frame When both ends of the (13, 14) are coupled to the lower surface of the first protrusion or the lower surface of the first protrusion and the first surface of the stepped portion adjacent to the first protrusion, the connection member to which they are coupled has the maximum width and the minimum length. An undercarriage module is produced (see Fig. 5 (a)).

In addition, both ends of the horizontal frames 11 and 12 are respectively coupled to the first surface located at the end side of the step portion or the second surface located at the end side with respect to the connecting member to which they are coupled, and the vertical frames 13 and 14 When both ends of each are coupled to the first surface located at the end side of the step portion or the second surface located at the end side with respect to the connecting member to which they are coupled, a chassis module having a minimum width and a maximum length is manufactured (FIG. 5). (b) Reference).

As described above, each frame coupled to the connecting members 30, 40, 50, and 60 can be firmly coupled to each other by welding or bolting. In this embodiment, as an example, each frame is connected to the connecting member by welding. (30,40,50,60).

In addition, the undercarriage module manufactured as described above performs a function of supporting the vehicle body at the lower portion of the vehicle. As shown in FIG. 1, when the undercarriage module is an undercarriage module of an electric vehicle, a horizontal frame is shown. A battery module B may be installed inside the rectangular shape formed by the 11 and 12 and the vertical frames 13 and 14 to form a bottom surface of the undercarriage module.

Meanwhile, FIGS. 6 and 7 show a case where the undercarriage connecting member 120 described in the second embodiment is applied as the connecting members 130, 140, 150, and 160 for connecting the horizontal frames 11, 12 and the vertical frames 13, 14 It is a drawing, and since the configuration of the connecting members 130, 140, 150, 160 and the undercarriage module overlaps with the contents described in the second embodiment and this embodiment, detailed description will be omitted below.

However, in this case, since the undercarriage module is generally shaped like a rectangle, the overall area of the undercarriage module is wider than in the case of FIGS. 4 and 5 described above.

1: Central module 2: Front module
3: Rear module 11, 12: Horizontal frame
13,14: Vertical frame 20,30,40,50,60,120: Connection member
21,31,41,51,61,121: first protrusion 22,32,42,52,62,122: second protrusion
23,33,43,53,63,123: Step 71,72: Front module frame
73,74: rear module frame 81,82: side extension frame

Claims (22)

In the chassis connecting member that combines the horizontal frame and the vertical frame constituting the chassis (chassis) to each other,
A first protrusion having a beam shape parallel to the horizontal frame;
A second protrusion having a beam shape that is bent in a direction toward a lower surface of the first protrusion from one end of the first protrusion so as to incline toward the outside of the first protrusion; And
The first projection and the second projection so as to be parallel to the vertical frame protruding in the direction of the lower surface of the first projection, and includes a stepped portion coupled to at least one of the horizontal frame and the vertical frame on one side, ,
A chassis connecting member characterized in that a plurality of stepped steps in which a first surface parallel to the vertical frame and a second surface parallel to the horizontal frame are alternately formed on one side surface of the step portion. According to claim 1,
Undercarriage characterized in that at least one coupling protrusion or coupling groove to which a connection frame connected to the front module or rear module of the vehicle is coupled is formed on one side of the upper surface of the first protrusion to be spaced apart from each other along the longitudinal direction of the first protrusion. Connecting member. According to claim 2,
An undercarriage connecting member characterized in that a side extension frame parallel to the vertical frame is coupled to an end of the second protrusion. In the chassis connecting member that combines the horizontal frame and the vertical frame constituting the chassis (chassis) to each other,
A first protrusion having a beam shape parallel to the horizontal frame; and
It includes a stepped portion that protrudes in the direction of the lower surface of the first protrusion from one end of the first protrusion to be parallel to the vertical frame, wherein at least one of the horizontal frame and the vertical frame is coupled to one side,
A chassis connecting member characterized in that a plurality of stepped steps in which a first surface parallel to the vertical frame and a second surface parallel to the horizontal frame are alternately formed on one side surface of the step portion. According to claim 4,
Undercarriage characterized in that at least one coupling protrusion or coupling groove to which a connection frame connected to the front module or rear module of the vehicle is coupled is formed on one side of the upper surface of the first protrusion to be spaced apart from each other along the longitudinal direction of the first protrusion. Connecting member. The method of claim 5,
The outer surface of the stepped portion adjacent to the upper surface of the first projecting portion forms an inclined surface inclined to the outside of the first projecting portion to prevent interference with the front module or the rear module of the vehicle coupled to the engaging projection or the engaging groove. Undercarriage connecting member, characterized in that. In the chassis connecting member that combines the horizontal frame and the vertical frame constituting the chassis (chassis) to each other,
A first protrusion having a beam shape parallel to the horizontal frame;
A step portion protruding from the end of one side of the first protrusion in a direction toward a lower surface of the first protrusion to be parallel to the vertical frame, wherein at least one of the horizontal frame and the vertical frame is coupled to one side; And
It includes a second protrusion that protrudes from the outer side of the step portion to the outside of the first protrusion,
A chassis connecting member characterized in that a plurality of stepped steps in which a first surface parallel to the vertical frame and a second surface parallel to the horizontal frame are alternately formed on one side surface of the step portion. The method of claim 7,
Undercarriage connecting member, characterized in that at least one coupling protrusion or coupling groove to which the connection frame connected to the front module or rear module of the vehicle is coupled is formed on one side of the upper surface of the first protrusion. The method of claim 8,
The outer surface of the stepped portion adjacent to the upper surface of the first projecting portion forms an inclined surface inclined to the outside of the first projecting portion to prevent interference with the front module or the rear module of the vehicle coupled to the engaging projection or the engaging groove. Undercarriage connecting member, characterized in that. The method of claim 8,
An undercarriage connecting member characterized in that a side extension frame parallel to the vertical frame is coupled to an end of the second protrusion. In the variable chassis module of a vehicle in which a plurality of frames are combined to form a chassis module,
A pair of horizontal frames spaced apart from each other in the vertical direction;
A pair of vertical frames respectively disposed on the left and right sides of the horizontal frame; And
It comprises a connecting member connected to each corner portion of the square shape to combine the horizontal frame and the vertical frame in a square shape,
Each of the connecting members is a first beam having a beam shape parallel to the horizontal frame, and a beam shape bent in a direction toward a lower surface of the first protrusion from one end of the first protrusion so as to be inclined to the outside of the first protrusion. A step in which at least one of the horizontal frame and the vertical frame is coupled to one side and protrudes in the direction of the lower surface of the first protrusion at the coupling portion of the first protrusion and the second protrusion to be parallel to the two protrusions and the vertical frame. Including wealth,
On one side of the step portion, a variable vehicle undercarriage module of a vehicle, characterized in that a plurality of stepped steps in which a first surface parallel to the vertical frame and a second surface parallel to the horizontal frame are alternately formed. The method of claim 11,
The width and length of the undercarriage module vary depending on a position where the horizontal frame and the vertical frame are coupled to any one of the first and second surfaces of the connecting member, respectively. The method of claim 12,
A pair of front module frames connected to the front modules of the vehicle and disposed in left and right directions of the horizontal frame; and
It is connected to the rear module of the vehicle, and further includes a pair of rear module frames disposed in the left and right directions of the horizontal frame,
The connecting members respectively connected to the upper edge portions of the square shape, at least one first coupling protrusion to which any one of the front module frames is coupled is formed on one side of the upper surface of the first protrusion,
The connecting members respectively connected to the lower edge portions of the square shape, the variable type of the vehicle, characterized in that at least one second coupling protrusion to which any one of the rear module frame is coupled is formed on one side of the upper surface of the first protrusion Undercarriage module. The method of claim 12,
A pair of front module frames connected to the front modules of the vehicle and disposed in left and right directions of the horizontal frame; and
It is connected to the rear module of the vehicle, and further includes a pair of rear module frames disposed in the left and right directions of the horizontal frame,
The connecting members respectively connected to the upper edge portions of the square shape, at least one first coupling groove to which any one of the front module frames is coupled is formed on one side of the upper surface of the first protrusion,
The connecting member, which is connected to the lower edge portions of the square shape, is a variable type of vehicle, characterized in that at least one second coupling groove to which any one of the rear module frames is coupled is formed on one side of the upper surface of the first protrusion. Undercarriage module. The method according to any one of claims 11 to 14,
Further comprising a pair of side extension frame disposed in parallel to the vertical frame on the outside of the square shape,
Each of the end of the side extension frame is a variable undercarriage module of a vehicle, characterized in that coupled to the end of the second projection of the connecting member. The method of claim 15,
The vehicle is an electric vehicle,
At least one battery is installed in the inside of the square shape to form a bottom surface of the vehicle undercarriage module, the vehicle undercarriage module. In the variable chassis module of a vehicle in which a plurality of frames are combined to form a chassis module,
A pair of horizontal frames spaced apart from each other in the vertical direction;
A pair of vertical frames respectively disposed on the left and right sides of the horizontal frame; And
It comprises a connecting member connected to each corner portion of the square shape to combine the horizontal frame and the vertical frame in a square shape,
Each of the connecting members protrudes in a direction toward a lower surface of the first protrusion from one end of the first protrusion so as to be parallel to the vertical frame and a first protrusion having a beam shape parallel to the horizontal frame, and the horizontal to one side. It includes a step portion that is coupled to at least one of the frame and the vertical frame,
On one side of the step portion, a variable vehicle undercarriage module of a vehicle, characterized in that a plurality of stepped steps in which a first surface parallel to the vertical frame and a second surface parallel to the horizontal frame are alternately formed. The method of claim 17,
The width and length of the undercarriage module vary depending on a position where the horizontal frame and the vertical frame are coupled to any one of the first and second surfaces of the connecting member, respectively. The method of claim 18,
A pair of front module frames connected to the front modules of the vehicle and disposed in left and right directions of the horizontal frame; and
It is connected to the rear module of the vehicle, and further includes a pair of rear module frames disposed in the left and right directions of the horizontal frame,
The connecting members respectively connected to the upper edge portions of the square shape, at least one first coupling protrusion to which any one of the front module frames is coupled along the longitudinal direction of the first protrusion on one side of the outer surface of the first protrusion. Are formed spaced apart from each other,
The connecting members respectively connected to the lower edge portions of the square shape, the at least one second coupling protrusion to which any one of the rear module frame is coupled along the longitudinal direction of the first protrusion on one side of the outer surface of the first protrusion A flexible undercarriage module for a vehicle, which is formed by being spaced apart from each other. The method of claim 18,
A pair of front module frames connected to the front modules of the vehicle and disposed in left and right directions of the horizontal frame; and
It is connected to the rear module of the vehicle, and further includes a pair of rear module frames disposed in the left and right directions of the horizontal frame,
The connecting members respectively connected to the upper edge portions of the square shape have at least one first coupling groove to which any one of the front module frames is coupled along the longitudinal direction of the first protrusion on one side of the outer surface of the first protrusion. Are formed spaced apart from each other,
The connecting members respectively connected to the lower edge portions of the square shape have at least one second coupling groove to which any one of the rear module frames is coupled along the longitudinal direction of the first protrusion on one side of the outer surface of the first protrusion. A flexible undercarriage module for a vehicle, which is formed by being spaced apart from each other. The method according to any one of claims 17 to 20,
Further comprising a pair of side extension frame disposed in parallel to the vertical frame on the outside of the square shape,
Each of the connecting members further includes a second protrusion protruding from the outer surface of the stepped portion to the outside of the first protrusion, respectively,
Each of the end of the side extension frame is a variable undercarriage module of a vehicle, characterized in that coupled to the end of the second projection of the connecting member. The method of claim 21,
The vehicle is an electric vehicle,
At least one battery is installed in the inside of the square shape to form a bottom surface of the vehicle undercarriage module, the vehicle undercarriage module.

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