JPH0655879U - Vehicle ladder - Google Patents

Abstract

(57) [Summary] [Purpose] To avoid obstructing the rear view of the driver without requiring a special design corresponding to the shape of the back door. [Structure] A fixed shaft 5 is provided on a spare tire carrier 13 provided on the back side of a vehicle. Fixed shaft 5
Penetrates the center hole of the spare tire held by the carrier 13. The ladder frame 1 is rotatably provided on the fixed shaft 5. The ladder frame 1 is provided with fixing means that can be selectively fixed to the standing position and the sideways position.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle ladder that is installed in a vehicle, such as an off-road vehicle or a recreational vehicle vehicle.

[0002]

[Prior art]

 Vehicles such as off-road vehicles and recreational vehicle vehicles are often equipped with a ladder that is convenient for loading and unloading luggage on, for example, a roof rack. Conventionally, for example, in the case of a lift gate vehicle 51 having a lift type back door 52 shown in FIG. 5, the back door 52 is equipped with a ladder 53. 5A is a rear view of the vehicle, and FIG. 5B is a cross-sectional view of the ladder mounting portion.

Further, in the case of the cannon door vehicle 61 having the double door type back doors 62 and 64 shown in FIG. 6, a spare tire 65 is held on one of the back doors 64 via a spare tire carrier (not shown). Therefore, the other back door 62 is equipped with the ladder 63. In addition, in FIG. 6, (a) is a rear view of the vehicle, and (b) is a cross-sectional view of the ladder mounting portion. In each vehicle, the upper and lower ends of the ladder are fixed to the upper and lower door flanges of the back doors 52 and 62 by using mounting parts 56 and 66 such as mounting screws and attachments. .

[0004]

[Problems to be solved by the device]

 According to the conventional ladders 53 and 63, a dedicated design corresponding to the shape of the back door for mounting the ladders is required, which results in high cost. Further, since the rudder 53, 63 is fixed to the back door 52, 62 by the attachment parts 56, 66, the rear view of the driver through the back window 57, 67 is obstructed by the rudder 53, 63.

Therefore, the present invention has been made to solve the above-mentioned problems, and its purpose is to avoid obstructing the rear view of the driver without requiring a dedicated design corresponding to the shape of the back door. The object is to provide a vehicle ladder that can be used.

[0006]

[Means for Solving the Problems]

 The present invention, which solves the above-mentioned problem, provides a vehicle equipped with a spare tire carrier on the back side. It is provided with a movably provided ladder frame and a fixing means capable of selectively fixing the ladder frame at the standing position and the lying position.

[0007]

[Action]

 According to the above-mentioned means, when the ladder is used, the ladder frame is fixed to the standing position by the fixing means. Further, when the ladder is not used, the fixing by the fixing means is released, the ladder frame is rotated around the fixing shaft to the sideways position, and then fixed by the fixing means.

[0008]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. The vehicle ladder is shown in an exploded perspective view in FIG. 1, and the longitudinal cross-sectional view of the vehicle ladder is shown in FIG. 2 (a). An enlarged view of the line cross section is shown. 1 and 2 (a), the spare tire carrier 13 is a well-known one, and has a hub bolt 4a arranged on a tire carrier fixing plate 4 on a mounting bracket 14 mounted on a back door of a vehicle (not shown). A spare tire 15 is usually held in the spare tire carrier 13 by fastening its wheel disc 16 with a hub nut.

At the center of the tire carrier fixing plate 4, a fixed shaft 5 having a threaded portion 5a at its tip is projected. The fixed shaft 5 penetrates the center hole 16a of the wheel disc 16 of the spare tire 15 held by the spare tire carrier 13. After a spare tire 15 and a fixing bracket 3 and a ladder frame 1 which will be described below are sequentially inserted into the fixing shaft 5, a fixing handle 6 is screwed to a screw portion 5a thereof.

The fixing bracket 3 has a substantially quarter shape and has a support portion 17 having a through hole 17 a through which the screw portion 5 a of the fixed shaft 5 penetrates, and a continuous portion on the outer peripheral portion of the support portion 17. And a substantially channel-shaped fixing portion 18 surrounding the outer peripheral portion of the spare tire 15. The fixing strap 18 is provided on the fixing portion 18. As shown in FIG. 1, the fixing strap 2 includes a pair of strap wires 2a each having a wire end attached to a fixing portion 18, and a pair of strap wires 2a having their free ends wound around the outer circumference of the spare tire 15. It consists of a well-known clip-type or bag-type stopper metal fitting 2b for fixing.

Further, in FIGS. 1 and 2, arcuate guide grooves 7 centered on the center of the through hole of the support portion 17 are symmetrically formed on both flange portions of the fixed portion 18. Locking grooves 7a are formed at both ends of the guide groove 7 so as to form a hook shape toward the through hole 17a. A roller shaft 9 is installed in the guide groove 7 so as to be movable in parallel along the groove. The roller shaft 9 rotatably supports the roller 8 located between both flange portions of the fixed portion 18. A roller guide plate 11 on which the roller 8 rolls is attached between both flange portions of the fixed portion 18 by welding or the like so as to surround the fixed portion 18 in a box shape. As shown in FIG. 2 (b), recesses 11a for accommodating the rollers 8 when the roller shaft 9 is fitted in the locking groove 7a are formed at both ends of the roller guide plate 11. The roller shaft 9 is attached to the ladder frame 1 described below.

The ladder frame 1 is made of a metal pipe, and its upper and lower ends are bent so as to substantially follow the outer shape of the spare tire 15. A mounting plate 19 having a through hole 19a through which the threaded portion 5a of the fixed shaft 5 passes is attached to the central portion of the ladder frame 1 by welding or the like. On the upper part of the ladder frame 1, horizontal pipes 1a are set respectively above the two flange portions of the fixed portion 18 of the fixed bracket 3. The roller shaft 9 is assembled to both the horizontal pipes 1a as follows.

In FIG. 4, which is a cross-sectional view showing the assembly portion of the roller shaft 9, a guide pipe 20 is attached in a hanging shape by welding or the like at the center of the horizontal pipe 1 a. A guide rod 21 is vertically attached to the roller shaft 9 by welding or the like. The guide rod 21 is slidably inserted in the guide pipe 20. The horizontal pipe 1a has an opening hole 22 into which the tip of the guide rod 21 can be inserted. A lock spring 23 is interposed between the edge portion of the opening hole 22 and the stepped portion of the guide rod 21 while being fitted to the rod. The lock spring 23 biases the guide rod 21 downward in the drawing. The guide rod 21 is retained by a retaining ring 24 attached to the guide rod 21 and a caulking portion 20a at the opening edge of the guide pipe 20.

The vehicle ladder is mounted on a spare tire carrier 13 of a vehicle back door together with a spare tire 15 as follows. First, in FIGS. 1 and 2, after fitting the wheel disc 16 of the spare tire 15 to the hub bolt 4a of the spare tire carrier 13, the wheel disc 16 is fixed to the screw portion 5a of the fixing shaft 5 which penetrates the center hole 16a. After the through hole 17a of the support portion 17 of the bracket 3 and the through hole 19a of the mounting plate 19 of the ladder frame 1 are sequentially inserted, the fixed handle 6 is screwed to the screw portion 5a in a temporarily tightened state. The supporting portion 17 and the mounting plate 19 are in contact with and supported by the stepped portion of the fixed shaft 5.

Next, the fixed strap 2 of the fixed bracket 3 is wound around the spare tire 15 and fixed with the stopper 2b. At this time, the roller shaft 9 is fitted into the upper engaging groove 7a by the elasticity of the lock spring 23, and the roller 8 is fitted into the concave portion 11a of the roller guide plate 11 to be positioned at the standing position. In this state, the ladder frame 1 is carried on the spare tire 15.

After the fixing bracket 3 is fixed by the fixing strap 2, the fixing handle 6 is screwed to finally fix the ladder frame 1. This state corresponds to FIG. In this example, the fixing means in the present invention is composed of the fixing handle 6, the fixing means of the fixing bracket 2 of the fixing bracket 3, and the positioning means of the roller 8 and the roller guide plate 11. This state is the state when the ladder is used, and the ladder frame 1 can be used as the ladder for which it is used.

When the ladder is not used, after loosening the fixed handle 6, the roller shaft 9 is lifted against the bias of the lock spring 23 to release the engagement with the locking groove 7a. In this state, by rotating the ladder frame 1 counterclockwise in FIG. 1, the roller shaft 9 moves along the guide groove 7 while the roller 8 rolls on the roller guide plate 11, and finally When the roller shaft 9 is engaged with the other locking groove 7a by the urging force of the lock spring 23 and the roller 8 is fitted in the recess 11a of the roller guide plate 11, the roller shaft 9 is positioned in the sideways position and locked.

In this way, after the ladder frame 1 is laid down and the position is changed to the position, the fixing handle 6 is screwed again to finally fix the ladder frame 1. This state is the non-use state shown in a perspective view in FIG. In this state, it is possible to avoid problems such as obstruction of the driver's backward vision.

When the rudder is to be used again, the rudder frame 1 may be fixed to the standing position shown in FIG. 3 by substantially the same operation as the position sail changing procedure when not in use.

The spare tire 15 can be replaced by removing the ladder in the reverse order of attachment to the spare tire 15.

According to the fixing means including the fixed handle 6, the fixed strap 2 of the fixed bracket 3 and the roller shaft 9 of this embodiment, the spare tire 15 can be easily attached and detached as compared with the attachment parts such as the conventional device. Further, the tightening of the hub nut on the hub bolt 4a of the spare tire 15 can be omitted.

[0022]

[Effect of device]

 According to the present invention, unlike the conventional method in which the door flange of the back door is used for fixing, a dedicated design corresponding to the shape of the back door can be eliminated, and thus cost can be reduced. Further, since the ladder frame is arranged so as to be carried by the spare tire and the ladder frame is fixed to the sideways position when the ladder is not used, it is possible to avoid a problem such as obstruction of the driver's rear view.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a vehicle ladder.

FIG. 2 is an explanatory diagram showing a usage state of a vehicle ladder.

FIG. 3 is a perspective view showing a non-use state of the vehicle ladder.

FIG. 4 is a cross-sectional view showing an assembly portion of a roller shaft with respect to a ladder frame.

FIG. 5 is an explanatory diagram showing a conventional example.

FIG. 6 is an explanatory diagram showing another conventional example.

[Explanation of symbols]

 1 Ladder frame 5 Fixed shaft 13 Spare tire carrier

Claims (1)

[Scope of utility model registration request] 1. In a vehicle having a spare tire carrier on the back side, a fixed shaft provided in the spare tire carrier and penetrating a center hole of a spare tire held by the carrier, and a rotatably provided on the fixed shaft. Ladder for the vehicle, which comprises the above-mentioned ladder frame and a fixing means capable of selectively fixing the ladder frame at the standing position and the lying position.