KR20190058090A - Roll over protective structure for Multi-purpose Utility vehicle - Google Patents

Abstract

Disclosed is a roll over protective structure (ROPS) for a multipurpose transportation vehicle, capable of being easily separated from a vehicle body frame. According to the present invention, the ROPS for a multipurpose transportation vehicle comprises: a front frame assembly including two front vertical members spaced apart in the lateral direction of the vehicle and one front cross member; a rear frame assembly including two rear vertical members spaced apart in the lateral direction of the vehicle and one rear cross member; a pair of left and right central connecting members interconnecting the top part of the corresponding front and rear vertical members; a front connecting unit interconnecting the corresponding front vertical member and central connecting member; and a rear connecting unit interconnecting the corresponding central connecting member and rear connecting member.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a multi-

The present invention relates to an occupant protection structure for a multipurpose vehicle, and more particularly, to an occupant protection structure for a multi-purpose transportation vehicle having a wide range of utilization and a passenger protection structure (ROPS, Roll over protective structure.

Utility vehicles are widely used in a wide range of fields such as distribution, construction, leisure, and farming. Especially, this multi-purpose transportation vehicle is advantageous for traveling on rough roads. Therefore, it is mainly used as a transportation means for carrying and transporting soil, agricultural products, and tools necessary for various operations at a construction site or an agricultural site.

As such, multipurpose transportation vehicles, which are mainly used in construction or farming, often work in places where they approach the mountain or are in a hurry. Therefore, it is often the case that a passenger wears a vehicle by a vehicle such as a rock. Accordingly, a passenger protection structure called a 'roll over protective structure' (ROPS) is provided.

ROPS should increase the occupant's risk by constructing a structure that has sufficient structural stiffness not to bend against rock falling and that the deformation can be minimized even when the vehicle overturns. BACKGROUND ART Conventionally, a conventional multi-purpose vehicle generally comprises a ROPS in a substantially hexahedron shape capable of protecting a passenger seat by extending a frame from a body frame constituting a skeleton of the vehicle.

That is, in the general-purpose transport vehicle known in the prior art, the ROPS, which is a structure for protecting the passenger, is integrated with the vehicle body frame. Therefore, when the ROPS needs to be removed according to the working environment, it is difficult to separate the ROPS even if the multipurpose transportation vehicle is parked or stored in a limited space or when maintenance is performed in a narrow space.

Even if the ROPS, which is a three-dimensional structure, is made detachable from the body frame, there is a problem that it is necessary to secure a storage space large enough to safely store the removed ROPS. In the case of the detachable structure, , It may not be able to properly perform its original role of protecting passengers from danger.

Japanese Patent Application Laid-Open No. 2006-103370 (published on Mar. 20, 2006)

SUMMARY OF THE INVENTION It is an object of the present invention to provide an occupant protection structure for a multipurpose vehicle, which can be easily detached from a vehicle body frame as needed and can be disassembled into several parts to facilitate the transportation or storage of the detached structure .

According to an embodiment of the present invention as a solution to the problem,

A front frame assembly including two front vertical members spaced apart in a vehicle width direction and a front cross member for interconnecting the two front vertical members;

A rear frame assembly including two rear vertical members spaced apart in the vehicle width direction and a rear cross member interconnecting the rear vertical members;

A pair of left and right central connecting members provided to mutually connect upper ends of the front vertical members and the rear vertical members corresponding to each other;

A front connecting unit provided to interconnect the front vertical member and the center connecting member corresponding to each other; And

And a rear connecting unit provided to interconnect the central connecting member and the rear vertical members corresponding to each other.

The occupant protection structure of the multipurpose vehicle according to the present invention may further include a back frame assembly connected to a lower end of the rear frame assembly.

Wherein the backrest frame assembly includes an upper cross member interconnecting two lower rear vertical members, a pair of left and right back vertical members connected at right angles to both ends of the upper cross member, And a lower cross member interconnecting the members.

Further, the front connecting unit and the rear connecting unit applied to the embodiment of the present invention may have the same configuration.

The front connecting unit and the rear connecting unit preferably have a arc-shaped first binding member having a flat first binding surface and having at least two fastening holes, and a second fastening member having an arc- And a second coupling member having a planar second coupling surface having a width smaller than that of the first coupling surface and having two or more coupling holes corresponding to the coupling holes, wherein the first coupling surface and the second coupling member The first binding member and the second binding member can be firmly coupled to each other or can be easily separated if necessary by a fastening member fitted in the fastening hole in a state in which the surfaces are in contact with each other.

In this case, the first binding member may include a first coupling portion that is partially inserted into and overlapped with the upper end of the front vertical member or the rear end of the central connecting member, and a second coupling portion having a coupling hole and a first coupling surface, And the second coupling member may include a second coupling portion that is partially inserted into the upper end of the central connecting member or the upper end of the rear vertical member to be overlapped with the second coupling portion, And an arc-shaped second binding portion having a fastening hole and extending to a predetermined length at one side of the second fastening portion.

The first and second engaging portions may be formed with a second engaging portion and a stopping portion having a shape and size corresponding to the first engaging portion, respectively.

Further, the present invention is characterized in that the front cross member is configured to interconnect the two front connecting units, and the rear cross member is configured to interconnect the two rear connecting units.

Further, the front vertical member, the central connecting member, and the rear vertical member and the front connecting unit and the rear connecting unit that interconnect the members are symmetrically arranged in the diagonal direction with respect to the longitudinal center of each member and the connecting unit A concave portion for forming a canopy or a windshield which is continuous in the longitudinal direction can be formed.

At this time, a connector for coupling with the dashboard frame assembly connected to the vehicle body may be provided at the lower end of the front vertical member.

According to an embodiment of the present invention, the occupant protection structure (ROPS) is configured to be detachable from the vehicle body frame. Therefore, when the multi-purpose transport vehicle is parked or stored in a limited space, or when the maintenance or operation is performed in a narrow space, the ROPS can be removed as needed, so that the space can be reduced or the maintenance easiness can be secured.

Furthermore, the occupant protection structure (ROPS) itself can be disassembled into several parts (three parts) and has the advantage of carrying or storing the detached protection structure, and is capable of disassembling / assembling, The rigidity is ensured sufficiently, and the safety of the passenger can be reliably ensured even when the vehicle overturns or the external physical impact.

Further, in each of the front and rear vertical members, the central connecting member disposed therebetween, and the connecting unit for connecting between the members, a concave portion having a specific structure of the same size and depth is formed so that the length from the front vertical member to the rear vertical member So that the mounting of the canopy or the windshield is easy.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of an occupant protection structure (ROPS) for a multipurpose vehicle according to an embodiment of the present invention. FIG.
2 is an assembled side view of the protective structure shown in Fig.
3 is an exploded perspective view of the protective structure shown in Fig.
FIG. 4 is an enlarged view of a substantial part of the present invention, which is an enlarged view of the 'A' portion of FIG. 1, and FIG. 4 is a perspective view of the front connecting unit viewed from two different angles.
FIG. 5 is an enlarged view of the 'B' portion of FIG. 3, and is a perspective view of the separated state of the front connecting unit viewed from two different angles; FIG.
6 is an enlarged view of a portion 'C' in FIG. 3;
FIG. 7 is a plan view of the front vertical member, the center connecting member, and the rear vertical member in the direction of line D-D ', line E-E' and line F-F 'in FIG.
8 is a view of the front connecting unit and the rear connecting unit viewed from the line G-G 'and line H-H' of FIG. 1;

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

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

It is to be understood that the terms "comprises", "having", and the like in the specification are intended to specify the presence of stated features, integers, steps, operations, elements, parts or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, or combinations thereof.

Also, the terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

In addition, the terms " part, " " unit, " " module, " and the like, which are described in the specification, refer to a unit for processing at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software .

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings, in which like reference numerals refer to like elements throughout. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

FIG. 1 is an assembled perspective view of an occupant protection structure (ROPS) for a multi-purpose vehicle according to an embodiment of the present invention, and FIG. 2 is an assembled side view of the protection structure shown in FIG. And FIG. 3 is an exploded perspective view of the protective structure shown in FIG.

1 to 3, a roll over protective structure (abbreviated as 'ROPS (1)' hereinafter) for a multipurpose vehicle according to an embodiment of the present invention includes front and rear frames A central connecting member 30 disposed between the assemblies 10 and 50 and front and rear connecting units 20 and 40 for connection between the central connecting member 30 and the front and rear frame assemblies 10 and 50, .

The front frame assembly 10 has two front vertical members 12 and a front cross member 14 for connecting them. The two front vertical members 12 may be arranged so as to be spaced apart in the vehicle width direction and the front cross member 14 may connect the two front vertical members 12 directly or through the left and right front connecting units 20 And connect the two frontal vertical members 12 to each other.

The two front vertical members 12 and the front cross members 14 can be formed in a hollow metal pipe shape, that is, a steel pipe structure, having a cross-sectional shape (longitudinal section) formed into a specific shape . Of course, the present invention is not limited thereto, and a non-metallic material such as a high-strength synthetic resin can be used both as a hollow type and a solid type, but a hollow hollow structure is advantageous in terms of weight reduction.

The rear frame assembly 50 may be disposed to face the front frame assembly 10 at a predetermined distance, preferably a distance corresponding to the total length of the driver's seat space, rearward of the front frame assembly 10. The rear frame assembly 50 may preferably include two rearward vertical members 52 and a rear cross member 54 interconnecting the two rearward vertical members 52.

The two rearward vertical members 52 may be arranged to be spaced apart from each other in the width direction of the vehicle as in the front vertical member 12 and the rear cross member 54 may be provided to directly couple the two rearward vertical members 52 Or to interconnect the two rearward vertical members 52 through left and right rear connecting units 40, which will be described later.

The two rearward vertical members 52 and the rear cross members 54 may also be of a metal pipe shape, i.e., a steel pipe structure, having a cross-sectional shape (longitudinal cross-section) formed into a specific shape . Of course, the present invention is not limited thereto, and a non-metallic material such as a high-strength synthetic resin can be used both as a hollow type and a solid type, but a hollow hollow structure is advantageous in terms of weight reduction.

The front vertical members 12 and the rear vertical members 52 corresponding to each other in the front-rear direction are interconnected through the central connecting member 30. [ Specifically, the central connecting member 30 functions as a member that is disposed between the upper end of the front vertical member 12 and the upper end of the rear vertical member 52, which are disposed so as to be spaced apart from each other in the vehicle- do.

The two central connecting members 30 spaced apart in the vehicle width direction may also have a shape of a cross section (longitudinal section) to be formed in a specific shape (see FIG. 7) and a long hollow metal pipe shape, Non-metallic material such as synthetic resin can be both hollow and solid type, but hollow hollow structure is advantageous for light weight.

A back frame assembly 60 may be provided at the lower end of the rear frame assembly 50. The back frame assembly 60 preferably includes an upper cross member 62 interconnecting the lower ends of the two rearward vertical members 52. And a pair of right and left back vertical members 64 extending perpendicularly to both ends of the upper cross member 62 and extending downward.

A pair of right and left back vertical members 64 may be interconnected once again through a lower cross member 66 disposed substantially parallel to the upper cross member 62 and disposed at the lower portion thereof for rigid reinforcement, The lower end of the seat frame member 64 can be detachably / detachably coupled to the coupling protrusions 72 at both ends of the seat frame member 70 arranged in the vehicle width direction.

The front vertical member 12 and the center connecting member 30 and the corresponding central connecting member 30 and the rear vertical member 52 corresponding to each other are connected to the front connecting unit 20 and the rear connecting unit 40 Lt; / RTI > The front and rear connecting units 20 and 40 are provided to interconnect the front vertical member 12 and the central connecting member 30, the central connecting member 30 and the rear vertical members 52, which correspond to each other.

The front connecting unit 20 and the rear connecting unit 40 applied to the embodiment of the present invention may be of the same configuration but having only a different arrangement angle or direction. Hereinafter, only the configuration of the front connecting unit will be described with reference to FIGS. 4 to 5 in order to avoid the unnecessary redundant description of the convenience of explanation and the same configuration.

FIG. 4 is an enlarged view of a substantial part of the present invention showing an enlarged view of the 'A' portion of FIG. 1, which is a perspective view of the front connecting unit viewed from two different angles, FIG. 5 is an enlarged view of a portion 'B' Fig. 3 is a perspective view of the front connecting unit viewed from two different angles; Fig.

4 to 5, the front connecting unit 20 includes an arc-shaped first binding member 22 having a planar first binding surface 240 at a side portion thereof and having at least two fastening holes H1, And a planar second coupling surface 280 having a width smaller than that of the first coupling surface 240 at a portion of a side facing the first coupling member 22, And an arc-shaped second coupling member 26 having the above-mentioned fastening holes H2.

The first binding member 22 includes a first engaging portion 23 which is partially inserted into and overlapped with the upper end of the front vertical member 12 (the rear end of the central connecting member 30 in the case of the rear connecting unit 40) can do. The first coupling portion 23 has an arc-shaped first coupling portion 24 having two or more coupling holes H1 and a planar first coupling surface 240 and extending at a predetermined length from one side of the first coupling portion 23 can do.

The first coupling part 23 is connected to the vertical member 12 through a mechanical process such as welding or partially overlapping the parts overlapping the front vertical member 12, The portion to be inserted into the vertical member 12 is formed to be somewhat smaller than the portion not to be inserted into the vertical member 12, so that the boundary portion may have a stepped configuration as shown in the drawing.

The second coupling member 26 includes a second coupling portion 27 which is partially inserted into and overlapped with the front end of the central connecting member 30 (the rear vertical member in the case of the rear connecting unit) and the second coupling portion 280 And an arc-shaped second binding portion 28 having two or more fastening holes H2 corresponding to the fastening holes H1 and extending at a predetermined length from one side of the second fastening portions 27 Lt; / RTI >

The second coupling portion 27 is also connected to the connecting member 30 and the connecting member 30 by mechanical welding such as welding or partial overlapping of the overlapping portions in a state in which the front end of the central connecting member 30 is partially inserted, The portion inserted into the central connecting member 30 may be formed to be somewhat smaller than the non-inserted portion, so that the boundary portion may be a stepped configuration.

Each of the first and second coupling portions 23 and 27 may include hooking protrusions 230 and 270 having a structure that protrudes forward from the first coupling surface 240 and the second coupling surface 280 have. The engaging jaws 230 and 270 may be formed in a shape and size corresponding to the cross-sectional shape and size of the second binding portion 28 and the first binding portion 24, The distal end surfaces of the second binding portion 28 and the first binding portion 24 can be fixed to the hooking jaws 230 and 270 in contact with each other.

The front connecting unit 20 having the above-described structure is configured such that the first fastening surface 240 and the second fastening surface 280 on the plane facing each other are engaged with the fastening holes H1 and H2, The first fastening member 22 and the second fastening member 26 can be fastened to each other so that the fastening members B and B can be firmly engaged with each other or the fastening member B can be disengaged have.

Particularly when the fastening member B is assembled and the first fastening member 22 and the second fastening member 26 are fastened together, the fastening member 23 and the fastening member 27, The connecting ends of the first and second binding portions 28 and 24 are connected to the first and second connecting portions 230 and 270 of the first connecting portion 20 and the second connecting portion 24, It is possible to sufficiently secure the axial stiffness in the axial direction.

6 is an enlarged view of a portion 'C' in FIG.

As shown in FIG. 6, a connector 18 may be provided at the lower end of the front vertical member 12. The connector 18 is for coupling with a dashboard frame assembly (not shown) connected to the vehicle body. As shown in the drawing, the connector 18 is provided with a coupling hole 180, which is partially inserted into the lower end of the front vertical member 12, And a coupling unit 182 coupled to a predetermined position of the dashboard frame on the opposite side.

Since the shape and structure of the dashboard frame can be changed according to specifications and specifications of the vehicle, the binding opening 182 provided at the lower end of the front vertical member 12 is also limited to the bar-shaped structure illustrated in the drawing no. It is only required to have a structure capable of fast and strong binding at a predetermined binding position of the dashboard frame regardless of the shape or shape.

FIG. 7 is a view showing the front vertical member, the center connecting member and the rear vertical member viewed from the D-D 'line, the E-E' line and the F-F ' 1 is a view showing the connecting unit viewed from a line G-G 'and a line H-H' in FIG.

7 and 8, the front vertical member 12, the central connecting member 30, and the rear vertical member 52 and the front connecting unit 12 interconnecting these members 12, 30, (C) symmetrical in the diagonal direction and continuous in the longitudinal direction with respect to the longitudinal center of the respective members (12, 30, 52) and the connecting units (20, 40) are formed in the rear connecting unit 20 and the rear connecting unit 40, () Can be formed.

That is, each cross-sectional shape of each of the members 12, 30, 52 and the front connecting unit 20 and the rear connecting unit 40 is a substantially butterfly shape in which diagonal portions C are symmetrically formed in a diagonal direction So that a single mounting recessed portion (not shown) continuing in the longitudinal direction from the front vertical member 12 to the rear vertical member 52 after assembly of the ROPS 1 due to the concave portion C formed in each member and the connecting unit, (Not shown) is formed to easily mount the canopy or the windshield (not shown).

According to the embodiment of the present invention described above, the occupant protection structure (ROPS) can be separated from the body frame. Therefore, when the multi-purpose transport vehicle is parked or stored in a limited space, or when maintenance or work is performed in a narrow space, the protective structure can be removed as needed, thereby reducing the space or securing ease of maintenance.

Furthermore, the occupant protection structure (ROPS) itself can be disassembled into several parts (three parts) and has the advantage of carrying or storing the detached protection structure, and is capable of disassembling / assembling, The rigidity is ensured sufficiently, and the safety of the passenger can be reliably ensured even when the vehicle overturns or the external physical impact.

Further, in each of the front and rear vertical members, the central connecting member disposed therebetween, and the connecting unit for connecting between the members, a concave portion having a specific structure of the same size and depth is formed so that the length from the front vertical member to the rear vertical member So that the mounting of the canopy or the windshield is easy.

In the foregoing detailed description of the present invention, only specific embodiments thereof have been described. It is to be understood, however, that the invention is not to be limited to the specific forms thereof, which are to be considered as being limited to the specific embodiments, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. .

1: occupant protection structure (ROPS) 10: front frame assembly
12: Front vertical member 14: Front cross member
18: connector 20: front connecting unit
22: first binding member 23: first binding portion
24: first binding portion 26: second binding member
27: second coupling portion 28: second coupling portion
30: central connecting member 40: rear connecting unit
50: rear frame assembly 52: rear vertical member
54: rear crossmember 60: backrest assembly
62: upper crossmember 64: backrest vertical member
66: Lower cross member 70: Seat frame member
72: a coupling protrusion 180:
182: coupling means 230, 270: engaging jaw
240: first binding surface 280: second binding surface
B: fastening member C:
H1. H2: fastening hole

Claims (11)

A front frame assembly (10) comprising two front vertical members (12) spaced in a vehicle width direction and a front cross member (14) for interconnecting the two front vertical members (12);
A rear frame assembly (50) including two rear vertical members (52) spaced in the vehicle width direction and a rear cross member (54) interconnecting the rear vertical members (52);
A pair of left and right central connecting members (30) provided to mutually connect the upper ends of the front vertical members (12) and the rear vertical members (52) corresponding to each other;
A front connecting unit (20) provided to interconnect the front vertical member (12) and the central connecting member (30) corresponding to each other; And
And a rear connecting unit (40) provided to interconnect the central connecting member (30) and the rear vertical members (52) corresponding to each other.
The method according to claim 1,
And a back frame assembly (60) connected to the lower end of the rear frame assembly (50).
3. The method of claim 2,
The backrest frame assembly (60)
An upper cross member (62) interconnecting the lower ends of the two rearward vertical members (52);
A pair of right and left back vertical members 64 connected at right angles to both ends of the upper cross member 62;
And a lower cross member (66) parallel to the upper cross member (62) and interconnecting the back vertical member (64).
The method according to claim 1,
Wherein the front connecting unit (20) and the rear connecting unit (40) have the same configuration.

5. The method of claim 4,
The front connecting unit (20)
An arc-shaped first binding member 22 having a planar first binding surface 240 on a part of the side surface and having at least two fastening holes H1;
And a second coupling surface 280 having a smaller width than the first coupling surface 240 at a side portion facing the first coupling member 22 and a second coupling surface 280 having a smaller width than the first coupling surface 240, And an arc-shaped second coupling member (26) having a fastening hole (H2)
The first binding member 22 and the second binding member 22 are fastened to each other by the fastening member B which is fitted in the fastening holes H which are matched with each other so that the first binding surface 240 and the second binding surface 280 are in contact with each other, And the binding members (26) are bonded to each other.
6. The method of claim 5,
The first binding member 22 includes a first engaging portion 23 that is partially inserted into and overlapped with the upper end of the front vertical member 12 or the rear end of the central connecting member 30, And an arc-shaped first binding portion 24 having a binding surface 240 and extending to a predetermined length at one side of the first binding portion 23,
The second coupling member 26 includes a second coupling portion 27 to which a part of the front end of the central connecting member 30 or the rear vertical member 52 is inserted and overlapped, And an arc-shaped second coupling part (28) having at least two fastening holes (H2) and extending to a predetermined length at one side of the second coupling part (27). .
The method according to claim 6,
The first and second coupling portions 23 and 27 are formed with hooking protrusions 230 and 270 in a shape and size corresponding to the second coupling portion 28 and the first coupling portion 24, Wherein the occupant protection structure of the multi-purpose vehicle is characterized by:
The method according to claim 1,
Characterized in that the front cross member (14) is configured to interconnect the two front connecting units (20).
The method according to claim 1,
Wherein the rear cross member (54) is configured to interconnect the two rear connecting units (40).
The method according to claim 1,
In the front connecting unit 20 and the rear connecting unit 40 interconnecting the front vertical member 12 and the central connecting member 30 and the rear vertical member 52 and these members,
Characterized in that a recessed portion (C) is formed for symmetrical formation in the diagonal direction with respect to the longitudinal center of each member and the connecting unit and for longitudinally continuous canopy or windshield mounting. structure.
11. The method according to claim 1 or 10,
And a connector (18) for coupling with a dashboard frame assembly connected to a vehicle body is provided at a lower end of the front vertical member (12).

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