JP4712434B2 - Fastening hook structure of vehicle - Google Patents

Description

  The present invention relates to a tightening hook structure for a vehicle used when a vehicle is transported by a ship, a trailer or the like.

  Conventionally, tightening hooks (also referred to as tie-down hooks) for tightening the vehicle body at a plurality of positions in the front and rear using a tie-down rope or the like during transportation by a ship, a trailer, or the like are provided at the lower part of the body frame. When tightening the vehicle body, a large load is applied to the tie-down hook. For this reason, the tie-down hook is required to be structurally provided with high strength.

  In general, the tie-down hooks are disposed at the front end portion of the front side member, the rear end portion of the rear side member, and the like in consideration of the securing property. However, by setting the tie-down hook at the end portion, the path for distributing the load is reduced, and it may be difficult to satisfy the requirements for the tie-down hook.

  Further, in recent vehicles, the lower end of the bumper face tends to be positioned below in order to emphasize the appearance, so-called exterior. For this reason, it is difficult to provide the die town hook at the front end of the front side member, the rear end of the rear side member, or the like. In order to cope with this, a tie-down hook is set between the skeleton part under the floor, in particular, between the front tire and the rear tire.

For example, in Patent Document 1, a front portion of a rear frame is coupled to each rear portion of a side sill, and a cross member is stretched over and coupled to the side sill, and a tie-down hook is connected to the side sill of the side sill and the rear frame. There is disclosed a technique in which a tie-down hook is bolted to a side sill inner and a rear frame, respectively, and is disposed straddling the inner and rear frames.
JP 2004-345392 A

  However, in the technique disclosed in Patent Document 1, the tie-down hook is a member having a dedicated function, and is firmly formed by a plate-like member having a relatively large thickness in order to ensure rigidity. For this reason, it accompanied with the increase in mass and became a factor of cost increase.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a tightening hook structure for a vehicle capable of suppressing an increase in cost and ensuring a sufficient structural strength.

The tightening hook structure for a vehicle according to the present invention is disposed on a pair of left and right front frames disposed in the front-rear direction of the vehicle, a side sill disposed on the outer side in the front-rear direction, and left and right sides of the rear portion of the vehicle body. A rear side frame, and a rear front cross member disposed in a vehicle width direction to which a rear end of the front frame is joined, and one end portion is fastened and fixed to the rear side frame, and the one end portion and the other end portion a plate-shaped connecting members that have a bent portion in the middle portion of a vehicle lashing hook portion is provided with a lashing member that is fastened to the lower side of the bent portion of the plate-like connecting member .

  According to this configuration, the hook portion is provided in the vehicle by fastening and fixing the plate-like connecting member provided with the securing member to the rear side frame and the rear front cross member.

  According to the present invention, it is possible to realize a tightening hook structure for a vehicle that can suppress an increase in cost and can secure a sufficient structural strength.

Embodiments of the present invention will be described below with reference to the drawings.
1 to 6 relate to an embodiment of the present invention, FIG. 1 is a schematic plan view seen from the outdoor side, explaining the configuration of a vehicle body frame, and FIG. 2 shows the configuration of a truss bar and a tie-down plate attached to the truss bar. FIG. 3 is a diagram for explaining a state in which the truss bar is fastened and fixed to the rear front cross member and the rear side frame. FIG. 4 is a view of the truss bar fastened to the rear front cross member and the rear side frame as viewed from the outdoor side. FIG. 5 is a view of the truss bar fastened and fixed to the rear front cross member and the rear side frame when viewed from the outside of the vehicle, and FIG. 6 is a view of the other configuration example of the vehicle body frame when viewed from the outdoor side. FIG. In the following description, the same symbols are attached to the left and right members for the left and right symmetrical members, and the description is simplified.

  As shown in FIG. 1, the main skeleton of the vehicle is located on the side of the vehicle body on a pair of left and right front frames 1, 1 arranged along the front-rear direction of the vehicle, and outside each front frame 1, 1. The side sills 2 and 2 extend in the front-rear direction, and the rear side frames 3 and 3 are disposed on the left and right sides of the rear part of the vehicle body at the rear end of the side sills 2 and 2.

  The front frames 1, 1 are formed in a substantially U-shaped bent shape having a bent portion 1 a in the middle portion, and a first tunnel cross member 4 disposed in the front side portion with respect to the vehicle width direction. Are joined. A second tunnel cross member 5 arranged in the width direction is joined to a position corresponding to the bent portion 1a, which is an intermediate portion of the front frames 1 and 1. Further, the rear ends of the front frames 1 and 1 are joined to a rear front cross member 6 disposed in the width direction. The front frames 1 and 1 having the bent portion 1a in the present embodiment gradually expand outward as they move from the vicinity of the bent portion to which the second tunnel cross member 5 is joined to the front side and the rear side. Has been extended to. The extending direction on the rear side of the bent portions 1 a of the front frames 1, 1 is set in the vicinity of a later-described inclined portion 3 a provided on the rear side frame 3. The second tunnel cross member 5, the front frame 1 from the bent portion 1a to the front side, and the front frame 1 from the bent portion 1a to the rear side are formed as a trifurcated portion that is divided into approximately equal parts.

  The rear portions of the side sills 2 and 2 are joined to the respective end portions of the rear front cross member 6. Further, the front portions of the rear side frames 3 and 3 are joined to the rear portions of the side sills 2 and 2 and to the respective end portions of the rear front cross member 6. A rear cross member 7 is joined to an intermediate portion of the rear side frames 3 and 3.

  An inclined portion 3a is provided slightly ahead of the portion where the rear wheels 8, 8 of the left and right rear side frames 3, 3 are disposed. The inclined portion 3a is slightly inwardly curved and extends upward in order to avoid interference with the rear wheels 8,8. That is, by providing the inclined portions 3a in the rear side frames 3 and 3, there is a difference in height between the front side of the rear side frame and the rear side of the intermediate portion as shown in FIG. It is higher than the front side.

  In the vicinity of the inclined portion 3a of the rear side frames 3 and 3, one end portion of a truss bar 10 which is a plate-like connecting member serving as a stiffening member and a load transmitting member is fastened and fixed by a bolt described later, and the other end portion of the truss bar 10 is It is fastened and fixed to a rear front cross member 6 to which the rear ends of the front frames 1 and 1 are connected by bolts described later. In this fastened state, the truss bar 10 is arranged in substantially the same direction with respect to the extending direction of the front frames 1, 1, in other words, linearly. Thus, the front frames 1 and 1 and the rear side frames 3 and 3 are connected by the truss bar 10 to form one skeleton.

  An area indicated by a two-dot chain line surrounded by the left and right rear side frames 3, 3, the rear front cross member 6, and the rear cross member 7 is secured as an area where the fuel tank 21 is disposed. Is disposed below the fuel tank 21. Reference numerals 4a and 5a are tunnel-shaped portions, reference numeral 22 is a differential device, reference numeral 23 is a front wheel, reference numeral 24a is a first seat cross member, reference numeral 24b is a second seat cross member, reference numeral 25 is an engine, and reference numeral 26 is a transmission. A propeller shaft 27, an exhaust pipe (not shown), a propeller shaft center bearing (not shown), and the like are arranged in the tunnel shape portions 4a and 5a. The first and second seat cross members 24a and 24b are provided on the indoor side.

  As shown in FIG. 2, the truss bar 10 has an elongated flat plate bar portion 11 whose end portion is fixed to the rear front cross member 6, and an end portion that is gradually fixed near the inclined portion 3 a of the rear side frame 3. An end portion configured to expand is provided with a flat plate expanding portion 12 having a wide width. The truss bar 10 has a cross-sectional shape in which as many ridge lines as possible are set in the longitudinal direction in order to provide light weight, low cost, and strength and rigidity.

  A bent portion 13 corresponding to the height generated between the front side of the rear side frames 3 and 3 and the rear side of the intermediate portion is provided at the intermediate portion of the truss bar 10. For example, one through hole 11a into which the fastening bolt 14 is inserted and disposed is formed at a predetermined position of the flat bar portion 11 of the truss bar 10, and the fastening bolt 14 is provided at a predetermined position of the flat plate expanding portion 12 of the truss bar 10. For example, two through holes 12a, 12a to be inserted are provided. Further, a through hole 13a through which a tie-down fixing bolt 16 for fastening and fixing a tie-down plate 15 (to be described later) to the truss bar 10 is inserted in the vicinity of the rising portion of the bent portion 13 provided in the truss bar 10 is provided. Is provided.

  The tie-down plate 15 is a tying member that serves as a hook member to which a tie-down rope or the like is tied up and a reinforcing member that stiffens the rigidity in the vicinity of the bent portion 13 of the truss bar 10. It is configured to be bent into a predetermined shape. The bent surface portion 15a formed in the tie-down plate 15 is provided with a hook through hole 15b which is a hook portion to which a tie-down rope (not shown) is secured. A tie-down fixing bolt 16 is provided at one end of the tie-down plate 15 with a first mounting portion 15d having holes 15c and 15c through which fastening bolts 14 are inserted. A second attachment portion 15f having a through hole 15e to be inserted is provided. Reference numeral 17 denotes a fastening nut which is screwed to the fastening bolt 14. Reference numeral 18 denotes a tie-down fixing nut which is screwed to the tie-down fixing bolt 16.

  The fastening and fixing of the truss bar 10 to the rear side frames 3 and 3 and the rear front cross member 6 will be described with reference to FIGS. As shown in FIG. 3, through holes 6 a and 3 b through which fastening bolts 14 are inserted are formed at predetermined positions of the rear front cross member 6 and the rear side frames 3 and 3.

  When the truss bar 10 is fastened and fixed to the rear side frames 3 and 3 and the rear front cross member 6, first, the tie-down plate 15 is disposed on the truss bar 10. Specifically, the tie-down fixing nut 16 is inserted through the through-hole 15e provided in the tie-down plate 15 and the through-hole 13a provided in the vicinity of the bent portion 13 of the truss bar 10. 18 is screwed. At this time, the center positions of the through holes 15c and 15c provided in the tie-down plate 15 and the center positions of the through holes 12a and 12a provided in the flat plate expanding portion 12 of the truss bar 10 are substantially matched.

  Next, the truss bar 10 on which the tie-down plate 15 is disposed is fastened and fixed. Specifically, the through hole 11 a provided at the end of the flat bar 11 is disposed opposite to the through hole 6 a provided in the rear front cross member 6, while provided in the flat plate expanding portion 12. The through holes 12 a and 12 a are arranged to face the through holes 3 b and 3 b provided in the rear side frame 3. Thereafter, the fastening bolt 14 is inserted into the through holes 11 a and 6 a and screwed into the fastening nut 17, and the fastening bolt 14 is inserted into the through holes 15 c, 12 a and 3 b and screwed into the fastening nut 17. . During the screwing, the bolt fastening on the flat bar portion 11 side, the two bolt fastenings on the flat plate expanding portion 12 side, or the one bolt fastening on the flat plate expanding portion 12 side, the bolt fastening on the flat bar portion 11 side, The fastening operation is performed in the order of fastening the other bolt on the flat plate expanding portion 12 side.

  As a result, as shown in FIGS. 3 and 4, the truss bar 10 to which the tie-down plate 15 is attached is firmly fixed to the rear side frame 3 and the rear front cross member 6, and the centroid of the truss bar 10 indicated by arrow A is shown. Is changed to the centroid indicated by the arrow B, and the rigidity of the truss bar 10 having the bent portion 13 is increased. Further, the truss bar 10 is fastened and fixed in a state where the rotational component is suppressed by so-called three-point fastening using three fastening bolts 14. In this fastened and fixed state, the tie-down plate 15 is fastened integrally with the truss bar 10. Further, in this fastened and fixed state, as shown in FIG. 5, the hook through hole 15 b formed in the bent surface portion 15 a of the tie-down plate 15 fastened and fixed integrally to the truss bar 10 includes the rear wheel 8 and the front wheel 23. It is arrange | positioned in the rear-wheel 8 vicinity which is between.

  Thus, the rear side frame 3 and the rear front cross are attached to the truss bar 10 to which the tie-down plate 15 serving as a reinforcing member for reinforcing rigidity in the vicinity of the bent portion 13 and a hook portion to which a tie-down rope or the like is secured is attached. By fastening and fixing to the member 6, a hook portion for tie-down can be provided in the vehicle without attaching a dedicated member for tie-down to the vehicle.

  A hook through hole 15b formed in the bent surface portion 15a of the tie-down plate 15 is disposed between the rear wheel 8 and the front wheel 23, and the truss bar 10 to which the tie-down plate 15 is attached includes the rear side frame 3. By being fastened and fixed to the rear front cross member 6, it is possible to effectively disperse the load applied to the tie-down plate 15 in a state where the vehicle body is tightened using a tie-down rope or the like.

  Further, by arranging the truss bar 10 to which the tie-down plate 15 is integrally fastened and fixed below the fuel tank 21, the fuel tank 21 can be protected at the time of derailment or the like. Thus, the fuel tank capacity can be increased by bringing the lower end position of the fuel tank closer to the truss bar 10.

  In the present embodiment, the front frame 1 has a bent shape having a bent portion 1a. However, the configuration of the front frame 1 is not limited to this, and a straight front frame 1A as shown in FIG. There may be. Also in this configuration, the same operations and effects as described above can be obtained by fastening and fixing the end portion of the truss bar 10 to the rear side frame 3 and the rear front cross member 6.

  The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the invention.

Schematic plan view seen from the outdoor side explaining the configuration of the body frame The figure explaining the composition of a truss bar and a tie-down plate attached to this truss bar The figure explaining the state which fastens and fixes a truss bar to a rear front cross member and a rear side frame A perspective view of the truss bar fastened and fixed to the rear front cross member and the rear side frame when viewed from the outdoor side View when the truss bar fastened to the rear front cross member and rear side frame is viewed from the outside of the vehicle Schematic plan view seen from the outdoor side explaining another configuration example of the body frame

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Front frame 1a ... Bending part 2 ... Side sill 3 ... Rear side frame 3a ... Inclination part 5 ... 2nd tunnel cross member 6 ... Rear front cross member 10 ... Truss bar 11 ... Flat bar part 12 ... Flat plate expansion part 13 ... Folding Curve 15: Tie down plate 15a ... Bending surface 15b ... Hook through hole

Claims (4)

A pair of left and right front frames disposed along the front-rear direction of the vehicle, a side sill disposed in the front-rear direction, rear side frames disposed on the left and right sides of the rear part of the vehicle body, and a rear end of the front frame And a rear front cross member arranged in the width direction of the vehicle,
One end is fastened to the rear side frame, a plate-shaped connecting member that having a bent portion at an intermediate portion between the one end and the other end has a vehicle lashing hook portion, the plate-like connecting member A fastening hook structure for a vehicle, comprising a securing member fastened and fixed below the bent portion .   Since the rear side frame is connected to the rear end of the side sill in front of the portion where the rear wheel is disposed, the rear side frame is curved toward the vehicle front downward direction. The fastening hook structure for a vehicle according to claim 1, wherein a rear end of the connection member is fastened and fixed. The plate-like connecting member has the bent portion toward the rear upper to the middle portion of the other end portion which is fastened to one end portion and the rear front cross member which is fastened to the rear side frames, the solid strapping member tightening hook structure for a vehicle according to claim 1 or claim 2 and bending direction of the bent portion and said Rukoto to have a bent shape that is bent to the opposite side. 4. The tightening hook structure for a vehicle according to claim 3, wherein the hook portion is a hook through hole formed in a bent surface portion of the tying member.

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