Vehicle

Abstract

A vehicle can prevent a spare tire from colliding with a vehicle component located in front of the spare tire in a spare tire mounting state when a rear collision of the vehicle occurs. A vehicle includes a spare tire mounting mechanism as a suspension type spare tire mounting mechanism, the mechanism including: a mounting linear member configured to support a spare tire from a vehicle body side in a state in which the spare tire is mounted on the vehicle and to break when a rear portion of the vehicle collides; a first linear member that supports the spare tire from the vehicle body side when the spare tire is lowered after the mounting linear member is broken; and a second linear member disposed behind the first linear member and supporting the spare tire from the vehicle body side when the spare tire descends after the mounting linear member breaks. When the mounting linear member is broken due to a rear collision, the spare tire moves downward and forward, and the spare tire is supported from the vehicle body side by the first and second linear members, and the lengths of the first and second linear members are such that the spare tire is inclined forward in this state.

Description

Technical Field

[0001] This technology relates to the technical field of suspended spare tire mounting mechanisms in vehicles. Background Technology

[0002] A suspended spare tire mounting mechanism is known, in which the spare tire is mounted in a state of suspension from the side of the vehicle body. When the vehicle is a car with a rear luggage compartment, the suspended spare tire mounting mechanism is usually located under the floor of the luggage compartment.

[0003] When the suspended spare tire mounting mechanism is located under the luggage compartment at the rear of the vehicle, the spare tire may move forward and collide with other components in the event of a rear-end collision. For example, in engine-powered vehicles where the engine drives the wheels, the fuel tank is located in front of the spare tire mounting mechanism, thus requiring protection in a rear-end collision. Similarly, in electric vehicles without an engine, high-voltage components such as a battery or motor drive circuitry that power the motor are located in front of the spare tire mounting mechanism, also requiring protection in a rear-end collision.

[0004] Regarding the relevant prior art, Patent Document 1 can be cited as an example. Patent Document 1 discloses a technique for suppressing the risk of damage to vehicle components positioned above the spare tire when a load is input from the rear of the vehicle. Specifically, it discloses a rear vehicle structure having a guide member located between the bottom of the vehicle body at the rear and a spare tire located below the bottom of the vehicle body and suspended from the vehicle frame by a fixing member. When a load is input from the rear of the vehicle, the guide member contacts the spare tire, causing the spare tire to move forward and downward.

[0005] Existing technology

[0006] Patent documents

[0007] Patent Document 1: Japanese Patent Application Publication No. 2018-079889 Summary of the Invention

[0008] The technical problem that the invention aims to solve

[0009] The purpose of this technology is to prevent the spare tire from colliding with vehicle components located in front of the spare tire when the spare tire is in the case of a rear-end collision.

[0010] Technical solutions to solve technical problems

[0011] The technology relates to a vehicle including a spare tire mounting mechanism, which is a suspended spare tire mounting mechanism, comprising: a mounting cable member configured to support the spare tire from the vehicle side when the spare tire is mounted on the vehicle, and to break upon a rear-end collision; a first cable member supporting the spare tire from the vehicle side when the spare tire descends after the mounting cable member breaks; and a second cable member disposed behind the first cable member, supporting the spare tire from the vehicle side when the spare tire descends after the mounting cable member breaks, wherein, as the mounting cable member breaks due to the rear-end collision, the spare tire moves downward and forward, becoming a state in which the spare tire is supported from the vehicle side by the first cable member and the second cable member, the lengths of the first cable member and the second cable member being set such that the spare tire is in a forward-leaning posture in this state.

[0012] Invention Effects

[0013] According to this technology, when a rear-end collision occurs, the spare tire can be prevented from colliding with vehicle components located in front of the spare tire when the spare tire is in the installed state. Attached Figure Description

[0014] Figure 1 This is a diagram showing a schematic structural example of a vehicle as an embodiment.

[0015] Figure 2 This is a perspective view of the spare tire in the implementation method.

[0016] Figure 3 This is a cross-sectional view of the spare tire in the implementation method.

[0017] Figure 4 This is an explanatory diagram illustrating a schematic structural example of a spare tire mounting mechanism as an implementation method.

[0018] Figure 5 This is a schematic cross-sectional view showing the condition of the spare tire mounting mechanism in which the spare tire is lowered vertically from its mounted state.

[0019] Figure 6 This is a schematic cross-sectional view showing the condition of the spare tire mounting mechanism in the event of a rear-end collision.

[0020] Figure 7 This is an explanatory diagram of the arc of movement of the support point of the first linear component and the arc of movement of the support point of the second linear component.

[0021] Figure 8 This is an explanatory diagram of an example of a winding mechanism for a linear component in a spare tire mounting mechanism as an embodiment.

[0022] Figure 9 This is a diagram showing the relationship between the diameter of the winding portion of the mounting wire component and the diameters of the winding portions of the first and second wire components.

[0023] Figure 10 This is a perspective view showing the condition of the spare tire mounting mechanism with the spare tire in the mounted state. Detailed Implementation

[0024] The embodiments of this technology will now be described with reference to the accompanying drawings.

[0025] Figure 1 This is a diagram showing a schematic structural example of vehicle 1 as an embodiment. Additionally, in Figure 1 In this document, only the constituent elements involved in this technology among the various constituent elements of the vehicle 1 as an embodiment are extracted and shown.

[0026] Vehicle 1, as an embodiment, is configured as an electric vehicle equipped with an MG (electric generator) as the drive source for the wheels. Specifically, vehicle 1 in this example is configured as a BEV (Battery Electric Vehicle) that does not have an engine as the drive source for the wheels.

[0027] In this example, we envision a four-wheeled vehicle as vehicle 1, but vehicle 1 as an implementation only needs to have at least three wheels.

[0028] In vehicle 1, which is an electric vehicle, a high-voltage battery is provided as the power source for the MG, and an inverter is provided for the MG. When the MG is powered, the inverter outputs a drive voltage generated based on the input voltage from the high-voltage battery to the MG, and during regeneration, the inverter uses the regenerated power generated by the MG to charge the high-voltage battery.

[0029] In addition, the rated output voltage of high-voltage batteries is, for example, a higher voltage such as 200V or 400V.

[0030] In the accompanying drawings, the part consisting of electronic components that process high voltage, such as the high-voltage battery or inverter, is referred to as the high-voltage component part 2.

[0031] In this example, the high-voltage component 2 is located below the seat in the vehicle 1, specifically below the rear seat, i.e., outside the vehicle.

[0032] In this example, vehicle 1 has a luggage compartment behind the rear seats, and the lower end of the luggage compartment forms the luggage compartment floor 4.

[0033] Additionally, vehicle 1 has a spare tire mounting mechanism 10 for mounting the spare tire 3. The spare tire mounting mechanism 10 is configured as a suspended spare tire mounting mechanism that mounts the spare tire 3 in a state of suspension from the side of the vehicle body.

[0034] As shown in the figure, the spare tire mounting mechanism 10 in this example is formed below the luggage compartment floor 4. Therefore, the spare tire 3 is installed below the luggage compartment formed at the rear of the vehicle 1.

[0035] Here, as described above, in vehicle 1 of this example, the high-voltage component 2 is located below the rear seats, while the spare tire 3 is mounted below the luggage compartment by the spare tire mounting mechanism 10. Therefore, the high-voltage component 2 is located in front of the spare tire 3.

[0036] Figure 2 This is a 3D view of spare tire 3. Figure 3 This is a cross-sectional view of spare tire 3.

[0037] The spare tire 3 has a rim portion 3a made of metal such as aluminum or iron, and a tire portion 3b made of rubber or the like installed on the outer periphery of the rim portion 3a.

[0038] A center hole Hc is formed in the center of the wheel rim portion 3a, and a plurality of wheel fixing component insertion holes Hf are formed around the center hole Hc.

[0039] Here, the wheel fixing component insertion hole Hf refers to the hole through which the spare tire 3 is inserted to the wheel fixing component of the vehicle 1 as a driving wheel. For example, if the driving wheel is fixed by tightening a nut, in other words, if a wheel bolt is formed in the wheel hub of the vehicle 1, the wheel fixing component insertion hole Hf is a hole through which the wheel bolt is inserted. Alternatively, if the driving wheel is fixed by tightening a bolt, in other words, if a threaded hole for threading a wheel rim bolt is formed in the wheel hub of the vehicle 1, the wheel fixing component insertion hole is a hole through which the wheel bolt is inserted.

[0040] In this example of the spare tire 3, the number of wheel fixing component insertion holes Hf is set to five, but this is just an example, and it is also conceivable to have three, four, or more than six. Of course, the number and spacing of the wheel fixing component insertion holes Hf correspond to the number and spacing of the aforementioned wheel hub bolts or threaded holes formed on the wheel hub of the vehicle 1.

[0041] The diameter of the through hole Hf of each wheel fixing component is the same, which is smaller than the diameter of the center hole Hc.

[0042] Figure 4 This is an explanatory diagram of a schematic structural example of the spare tire mounting mechanism 10, showing a schematic cross-sectional view near the luggage compartment at the rear of the vehicle 1. Figure 4 A cross-sectional view is shown with the spare tire 3 mounted on vehicle 1 (hereinafter referred to as "mounted state").

[0043] exist Figure 4 , Figure 5 , Figure 6 In the cross-sectional view, arrows indicate the front (direction of travel) and top of vehicle 1, respectively.

[0044] The spare tire mounting mechanism 10 has a mounting wire component 11, a first anti-detachment wire component 13, and a second anti-detachment wire component 14.

[0045] In this specification, "linear component" refers to a flexible linear component such as a cable, rope, chain, or strap.

[0046] The mounting wire component 11 is configured to support the spare tire 3 from the side of the vehicle body when the spare tire 3 is mounted on the vehicle 1, and to break off when the vehicle 1 is involved in a rear-end collision.

[0047] The root side of the mounting wire member 11 is supported by the vehicle body side, while a support member 12 is mounted at its front end. The support member 12 is, for example, a plate-shaped member made of metal, which has at least a portion that is longer than the diameter of the center hole Hc of the spare tire 3 (hereinafter referred to as the "long extension").

[0048] With the spare tire 3 installed, the front end of the mounting cable 11 is inserted into the center hole Hc, and the two ends of the long extension of the support member 12 abut against the surrounding portion of the center hole Hc. Thus, the spare tire 3 is supported from the vehicle side by the mounting cable 11.

[0049] Here, the support point on the vehicle body side of the mounting linear component 11 is marked as support point Ph.

[0050] When the spare tire 3 descends after the installation wire component 11 breaks, the first anti-detachment wire component 13 supports the spare tire 3 from the side of the vehicle body.

[0051] In addition, the second anti-detachment linear component 14 is disposed behind the first anti-detachment linear component 13, and supports the spare tire 3 from the side of the vehicle body when the spare tire 3 descends after the mounting linear component 11 breaks.

[0052] The root portions of the first anti-detachment linear component 13 and the second anti-detachment linear component 14 are each supported by the vehicle body side. As shown in the figure, the support points on the vehicle body side of these first anti-detachment linear components 13 and second anti-detachment linear components 14 are marked as support point Pa and support point Pb.

[0053] The support point Pa of the first anti-detachment linear member 13 is located in front of the support point Ph of the mounting linear member 11, and the support point Pb of the second anti-detachment linear member 14 is located behind the support point Ph of the mounting linear member 11. Thus, the second anti-detachment linear member 14 is positioned behind the first anti-detachment linear member 13.

[0054] A support member 15 is installed at the front end of the first anti-fall-off linear component 13, and a support member 16 is installed at the front end of the second anti-fall-off linear component 14.

[0055] Support member 15 and support member 16 are, for example, plate-shaped members made of metal, which at least partially have a portion that is longer than the diameter of the through hole Hf of the wheel fixing member of the spare tire 3 (as in the case of support member 12 described above, it is referred to as "long extension").

[0056] The first anti-detachment linear component 13 is inserted into the wheel fixing component insertion hole Hf located on the front side of the spare tire 3. When the spare tire 3 descends during a rear-end collision, the two ends of the long extension of the support component 15 installed at the front end of the first anti-detachment linear component 13 abut against the surrounding portion of the wheel fixing component insertion hole Hf. As a result, the descending spare tire 3 is supported from the vehicle side by the first anti-detachment linear component 13.

[0057] The second anti-detachment linear component 14 is inserted into the wheel fixing component insertion hole Hf located on the rear side of the spare tire 3. When the spare tire 3 drops down with the rear collision of the vehicle, the two ends of the long extension of the support component 16 installed at the front end of the second anti-detachment linear component 14 abut against the surrounding part of the wheel fixing component insertion hole Hf. As a result, the dropping spare tire 3 is also supported from the side of the vehicle body by the second anti-detachment linear component 14.

[0058] The spare tire 3 is prevented from falling off the vehicle body by being supported by the first anti-fall-off linear component 13 and the second anti-fall-off linear component 14.

[0059] In this example, with the spare tire 3 installed, the extended portions of support members 15 and 16 are respectively attracted to the surrounding portions of the corresponding wheel fixing member insertion holes Hf to prevent them from falling due to their own weight. Specifically, in this example, support members 15 and 16 are configured to have magnets and are attracted to the iron rim portion 3a by magnetic force. Furthermore, the method by which support members 15 and 16 are attracted to the rim portion 3a is not limited to using magnets; other methods can also be used, such as using hook and loop fasteners.

[0060] Here, with the spare tire 3, which drops as the vehicle is rear-ended, supported from the vehicle side by the first anti-detachment linear component 13 and the second anti-detachment linear component 14, as shown in the figure, the support points on the spare tire 3 side of the first anti-detachment linear component 13 and the second anti-detachment linear component 14 are marked as support point Pc and support point Pd, respectively.

[0061] In the spare tire mounting mechanism 10 of this embodiment, the lengths of the first anti-detachment linear member 13 and the second anti-detachment linear member 14 are set as follows: When the mounting linear member 11 breaks due to a rear-end collision, the spare tire 3 moves downwards and forwards, becoming a state where the spare tire 3 is supported from the vehicle side by the first anti-detachment linear member 13 and the second anti-detachment linear member 14. The lengths of the first anti-detachment linear member 13 and the second anti-detachment linear member 14 are set such that the spare tire 3 is in a forward-leaning posture in this state.

[0062] Specifically, in this example, the length from support point Pb to support point Pd of the second anti-detachment linear member 14 is longer than the length from support point Pa to support point Pc of the first anti-detachment linear member 13. In other words, when the spare tire 3 is supported from the vehicle side by the first anti-detachment linear member 13 and the second anti-detachment linear member 14, the length from the support point on the vehicle side of the second anti-detachment linear member 14 to the support point on the spare tire 3 side is longer than the length from the support point on the vehicle side of the first anti-detachment linear member 13 to the support point on the spare tire 3 side.

[0063] Furthermore, as described above, with the installation cable 11 breaking due to a rear-end collision, the spare tire 3 descends. Therefore, the lengths of the first anti-detachment cable 13 and the second anti-detachment cable 14 are set to be longer than the length of the installation cable 11 when the spare tire 3 is installed. Therefore, when the spare tire 3 is installed, as shown in the figure, the first anti-detachment cable 13 and the second anti-detachment cable 14 become loose.

[0064] Furthermore, the specific installation method for the spare tire 3 in this example will be explained again later.

[0065] Regarding the setting of the length and configuration relationship of the first anti-detachment linear member 13 and the second anti-detachment linear member 14 as described above, the principle that when the mounting linear member 11 breaks due to a rear-end collision with the vehicle, and the spare tire 3 is supported from the side of the vehicle body by the first anti-detachment linear member 13 and the second anti-detachment linear member 14, the spare tire 3 is in a forward-leaning posture will be explained below.

[0066] Figure 5The schematic cross-sectional view shows the state of the spare tire mounting mechanism 10 with the spare tire 3 lowered vertically from the mounted state. Figure 6 The schematic cross-sectional view shows the state of the spare tire mounting mechanism 10, in which the spare tire 3 moves downward and forward after a rear-end collision, and is supported from the side of the vehicle body by the first anti-detachment linear member 13 and the second anti-detachment linear member 14.

[0067] like Figure 5 As shown, the support points on the spare tire 3 side of the first anti-detachment linear component 13 and the second anti-detachment linear component 14, respectively, are marked as support point Pc' and support point Pd' when the spare tire 3 is in a vertically descending state. The lengths of the first anti-detachment linear component 13 and the second anti-detachment linear component 14 are specified to satisfy the condition that the line segment Pc'-Pd' connecting these support points Pc' and support points Pd' becomes a horizontal line segment.

[0068] In the event of a rear-end collision, the spare tire 3 experiences acceleration from the rear to the front of the vehicle 1. Simultaneously, due to the breakage of the mounting cable 11, the spare tire 3 also experiences gravitational acceleration. In other words, it experiences both forward and downward acceleration.

[0069] Based on the length and configuration of the aforementioned anti-detachment first linear component 13 and anti-detachment second linear component 14, when the spare tire 3, supported from the side of the vehicle body by the anti-detachment first linear component 13 and anti-detachment second linear component 14, moves in the front-rear direction, as... Figure 7 As shown, the support point Pc of the first anti-detachment linear component 13 moves on an arc A1 with the support point Pa as the center and the length from the support point Pa to the support point Pc as the radius, and the support point Pd of the second anti-detachment linear component 14 moves on an arc A2 with the support point Pb as the center and the length from the support point Pb to the support point Pd as the radius, and the diameter is larger than that of the arc A1.

[0070] Here, Figure 6 The state of a vehicle when it is involved in a rear-end collision can be described in other words as relative to... Figure 5 The vertical descent state is further acted upon by a forward acceleration. Therefore, referring to... Figure 7 It can be seen that, in Figure 6 When a rear-end collision occurs, support points Pc and Pd move forward of support points Pc' and Pd', respectively. At this time, due to the diameter difference between arcs A1 and A2, support point Pc is located below support point Pd. That is, the spare tire 3 in the event of a rear-end collision... Figure 6 The image shows a forward-leaning posture.

[0071] As described above, in the spare tire mounting mechanism 10 according to the embodiment, when the mounting wire member 11 breaks due to a rear-end collision of the vehicle, the spare tire 3 moves downward and forward, and becomes a state in which the spare tire 3 is supported from the side of the vehicle body by the first anti-detachment wire member 13 and the second anti-detachment wire member 14, and in this state, the spare tire 3 is in a forward-leaning posture.

[0072] Therefore, in the event of a rear-end collision with vehicle 1, the spare tire 3 can be prevented from colliding with the high-voltage component 2.

[0073] Furthermore, in the above explanation, regarding the lengths of the first anti-detachment linear member 13 and the second anti-detachment linear member 14, the example shown is the case where the line segment Pc'-Pd' is a horizontal line segment. However, this condition is not a necessary condition for the spare tire 3 to be in a forward-leaning posture when it is supported from the vehicle side by the first anti-detachment linear member 13 and the second anti-detachment linear member 14. Regarding the situation where the spare tire 3 is in a forward-leaning posture when it is supported from the vehicle side by the first anti-detachment linear member 13 and the second anti-detachment linear member 14 during a rear-end collision, the length from the support point Pb to the support point Pd of the second anti-detachment linear member 14, when the spare tire 3 is supported from the vehicle side by the first anti-detachment linear member 13 and the second anti-detachment linear member 14, only needs to be set to be longer than the length from the support point Pa to the support point Pc of the first anti-detachment linear member 13.

[0074] In addition, the above examples illustrate the loosening of the first anti-detachment linear member 13 and the second anti-detachment linear member 14 when the spare tire 3 is installed. In this case, when the spare tire 3 is installed, a portion of the front end of each of the first anti-detachment linear member 13 and the second anti-detachment linear member 14 may droop downwards more than the disc surface of the rim portion 3a.

[0075] To prevent such sagging, a structure can be used, for example, to fix the support member 15 and the support member 16 to the wheel rim portion 3a (e.g., the portion around the wheel fixing member insertion hole Hf through which the wire member is inserted).

[0076] Next, refer to Figure 8 The perspective view illustrates an example of a winding mechanism for a linear component of the spare tire mounting mechanism 10.

[0077] As shown in the figure, the spare tire mounting mechanism 10 has a winding shaft 17 that winds all the linear components, including the mounting linear component 11, the first anti-detachment linear component 13, and the second anti-detachment linear component 14, upward.

[0078] Although detailed illustrations are omitted, the winding shaft 17 is rotatably supported from the vehicle body side. The axis of the winding shaft 17 is parallel to the longitudinal direction of the vehicle 1. A gear portion 17g is formed on the winding shaft 17, and the entire winding shaft 17 is rotated by driving the gear portion 17g.

[0079] In this example, the spare tire mounting mechanism 10 has a drive gear 18 for a drive gear portion 17g and a contact hole Hu for contacting the drive gear 18. The contact hole Hu is formed as a hole that extends through the luggage compartment floor portion 4 in the vertical direction.

[0080] In this example, the drive gear 18 is a worm gear, and the axis of the drive gear 18 is parallel to the vertical direction. A tool mounting hole Hg is formed on the drive gear 18, which opens on the upper surface of the drive gear 18 and extends in the vertical direction.

[0081] The driving tool 20 used to drive the drive gear 18, in this example, as shown in the figure, is a tool having an L-shaped handle portion 20a and a shaft portion 20b protruding from the handle portion 20a. The tool mounting hole Hg in the drive gear 18 is formed as a hole portion that fits into the front end of the shaft portion 20b.

[0082] The winding shaft 17 has an installation wire winding section 17h, which is the part that winds the installation wire member 11 upward, a first wire winding section 17a, which is the part that winds the first anti-detachment wire member 13 upward, and a second wire winding section 17b, which is the part that winds the second anti-detachment wire member 14 upward.

[0083] The mounting wire component winding portion 17h is the part on the winding shaft 17 that fixes the root of the mounting wire component 11. That is, the mounting wire component winding portion 17h becomes the support point on the vehicle body side of the mounting wire component 11, which is equivalent to the aforementioned support point Ph.

[0084] The first linear component winding portion 17a is the part on the winding shaft 17 that fixes the root of the first linear component 13 to prevent it from falling off, and the second linear component winding portion 17b is the part on the winding shaft 17 that fixes the root of the second linear component 14 to prevent it from falling off. That is, the first linear component winding portion 17a becomes the support point on the vehicle body side of the first linear component 13 to prevent it from falling off, equivalent to the aforementioned support point Pa, and the second linear component winding portion 17b becomes the support point on the vehicle body side of the second linear component 14 to prevent it from falling off, equivalent to the aforementioned support point Pb.

[0085] In the tire mounting mechanism 10 of this embodiment, the diameter of the mounting wire member winding portion 17h is set to be larger than the diameter of the first wire member winding portion 17a and the second wire member winding portion 17b.

[0086] Specifically, in this example, such as Figure 9 As shown, the diameter of the first linear component winding portion 17a and the diameter of the second linear component winding portion 17b are the same, R1, and the diameter of the mounting linear component winding portion 17h, R2, is greater than R1.

[0087] Here, in the state before the spare tire 3 is installed, as shown in the figure, the spare tire 3 is grounded below the spare tire mounting mechanism 10. At this time, as shown in the figure, the front end of the mounting wire member 11 of the spare tire 3 is inserted into the center hole Hc, so that the aforementioned long extension of the support member 12 can abut against the surrounding part of the center hole Hc, and thus the spare tire 3 can be supported from the vehicle side by the mounting wire member 11.

[0088] In addition, the front ends of the first anti-detachment linear component 13 and the second anti-detachment linear component 14 are respectively inserted into the corresponding fixing component insertion holes Hf, and the long extensions of the support component 15 and the support component 16 are respectively attracted to the surrounding parts of the corresponding fixing component insertion holes Hf by the aforementioned magnet.

[0089] When installing the spare tire 3, the driver or other operator rotates the handle 20a in the direction D1 shown in the figure while the front end of the shaft 20b of the drive tool 20 is engaged with the tool mounting hole Hg of the drive gear 18 through the contact hole Hu.

[0090] Through this operation, the drive gear 18 is rotated, and the rotational power of the drive gear 18 is transmitted to the gear section 17g, causing the winding shaft 17 to rotate in the direction D2 shown in the figure. The mounting wire member 11, the first anti-detachment wire member 13, and the second anti-detachment wire member 14 are wound upward by the winding shaft 17. By winding the mounting wire member 11 upward, the spare tire 3 is lifted upward from the ground position. For example, by lifting the spare tire 3 to a predetermined height, such as the position where it abuts against the lower surface of the spare tire mounting mechanism 10, the spare tire 3 is in the mounted state.

[0091] At this time, by using a worm gear as the drive gear 18, the self-locking function of the worm gear can be used to prevent the spare tire 3 from falling due to its own weight.

[0092] Furthermore, as described above, the diameter of the mounting wire member winding section 17h is set to be larger than the diameters of the first wire member winding section 17a and the second wire member winding section 17b. Therefore, when the spare tire 3 is raised to the mounting position by rotating the winding shaft 17, as... Figure 10 As shown, the first anti-detachment linear component 13 and the second anti-detachment linear component 14 can be loosened.

[0093] Thus, with the spare tire 3 raised to the mounting position, the first anti-detachment linear member 13 and the second anti-detachment linear member 14 become slack, thereby allowing the spare tire 3 to descend and move downwards and forwards in the event of a rear-end collision. Therefore, by simply rotating the winding shaft 17, it is possible to prevent the spare tire 3 from colliding with the high-voltage component 2 in the event of a rear-end collision.

[0094] Furthermore, this embodiment is not limited to the specific examples described so far, and a variety of modified structures may be adopted.

[0095] For example, the above description illustrates that this technology is applicable to vehicles that are BEVs (Battery Electric Vehicles), but this technology can also be applied to engine-powered vehicles where the drive source for the wheels is an engine. In the case of an engine-powered vehicle, since a fuel tank is located in front of the spare tire 3 in its installed state, protection can be achieved for it.

[0096] Furthermore, the above description provides an example of loosening the first anti-detachment wire member 13 and the second anti-detachment wire member 14 while the spare tire 3 is installed. However, it is not necessary to loosen the first anti-detachment wire member 13 and the second anti-detachment wire member 14.

[0097] For example, by employing a structure that applies a force in the rolling direction to the root of the first anti-detachment linear member 13 and the second anti-detachment linear member 14, the first anti-detachment linear member 13 and the second anti-detachment linear member 14 can be prevented from becoming loose when the spare tire 3 is installed. Furthermore, the applied force is set such that when the spare tire 3 falls due to a rear-end collision, the rolled-up first anti-detachment linear member 13 and the second anti-detachment linear member 14 are pulled out in the opposite direction to the rolling direction.

[0098] Since the first anti-detachment linear component 13 and the second anti-detachment linear component 14 do not loosen when the spare tire 3 is installed, it can prevent these linear components from interfering with other parts due to vibrations during vehicle operation, thus preventing abnormal noises or damage to the linear components.

[0099] Furthermore, in the above description, an example was given of a method in which a wire-like component is inserted into a hole formed in the rim portion 3a, and a support member formed in the front end of the wire-like component is used to support the spare tire 3. However, when using this method of supporting the spare tire 3 with the surrounding portion of the hole in the rim portion 3a, the support member is not limited to being a component separate from the wire-like component, but may also be formed as part of the wire-like component, such as a knot of the wire-like component.

[0100] Furthermore, the method of supporting the spare tire 3 by utilizing the portion around the hole formed on the rim portion 3a is just one example. For example, other support methods may also be used, such as using a clip provided on the front end of the linear component to clamp the protrusion formed on the rim portion 3a, or using bolts to fix the front end of the linear component to the protrusion.

[0101] Furthermore, in the above description, examples are given in which the first anti-detachment linear component 13 and the second anti-detachment linear component 14 are each set to an odd number, but at least one of the first anti-detachment linear component 13 and the second anti-detachment linear component 14 may also be set to a plural number.

[0102] For example, as a three-point support, the first anti-detachment linear component 13 can be a single unit, and the second anti-detachment linear component 14 can be a pair of two units on the left and right. Alternatively, as a four-point support, for example, a pair of two first anti-detachment linear components 13 on the left and right and a pair of two second anti-detachment linear components 14 on the left and right can be respectively provided.

[0103] As described above, the vehicle (same as 1) as an embodiment includes a spare tire mounting mechanism (same as 10), which is a suspended spare tire mounting mechanism, having: a mounting wire member (same as 11), configured to support the spare tire from the vehicle side when the spare tire is mounted on the vehicle, and to break in the event of a rear-end collision; a first wire member (anti-detachment first wire member 13), which supports the spare tire from the vehicle side when the spare tire descends after the mounting wire member breaks; and a second wire member (anti-detachment second wire member 14), which is disposed behind the first wire member and supports the spare tire from the vehicle side when the spare tire descends after the mounting wire member breaks, wherein, as the mounting wire member breaks due to a rear-end collision, the spare tire moves downward and forward, becoming a state in which the spare tire is supported from the vehicle side by the first wire member and the second wire member, and the lengths of the first wire member and the second wire member are set such that the spare tire is in a forward-leaning posture in this state.

[0104] As described above, in the spare tire mounting mechanism according to the embodiment, when the mounting cable breaks due to a rear-end collision of the vehicle, the spare tire moves downward and forward, becoming a state in which the first cable and the second cable support the spare tire from the side of the vehicle body, and in this state, the spare tire is in a forward-leaning posture.

[0105] Therefore, in the event of a rear-end collision, the spare tire can be prevented from colliding with vehicle components located in front of the spare tire when the spare tire is in the spare tire mounting position.

[0106] In particular, when the aforementioned vehicle components are high-voltage components or fuel tanks, vehicle safety can be improved by preventing the spare tire from colliding with these components.

[0107] Furthermore, in the vehicle described in this embodiment, when the spare tire is supported from the vehicle body side by the first linear member and the second linear member, the length from the support point (same as Pb) on the vehicle body side of the second linear member to the support point (same as Pd) on the spare tire side is set to be longer than the length from the support point (same as Pa) on the vehicle body side of the first linear member to the support point (same as Pc) on the spare tire side.

[0108] This allows the spare tire to be positioned in a forward-leaning posture when it drops as the vehicle is rear-ended.

[0109] Therefore, in the event of a rear-end collision, the spare tire can prevent it from colliding with vehicle components located in front of the spare tire when the spare tire is in the spare tire mounting position.

[0110] Furthermore, in the vehicle described in this embodiment, with the spare tire installed, the first linear component and the second linear component are inserted into the wheel fixing component insertion hole (same as Hf) formed in the rim portion of the spare tire.

[0111] Therefore, the hole pre-formed in the rim portion as an insertion hole for a wheel fixing member used to fix the spare tire as a driving wheel can be used as a insertion hole for a spare tire that is lowered and supported by the first and second linear members.

[0112] Therefore, as a spare tire, it is not necessary to manufacture a special part that forms a hole for the insertion of the first and second linear components in addition to the insertion hole of the wheel fixing component, thus achieving cost reduction.

[0113] Furthermore, in the vehicle as an embodiment, the spare tire mounting mechanism has a winding shaft (same as 17) that winds all the linear components of the mounting linear component, the first linear component, and the second linear component upward.

[0114] Therefore, when installing a spare tire, all the linear components of the mounting cable, the first linear component, and the second linear component can be wound upwards by rotating the winding shaft.

[0115] Therefore, when installing a spare tire, the workload of rolling up the mounting wire components, the first wire component, and the second wire component can be reduced.

[0116] Furthermore, in the vehicle as an embodiment, the diameter (R2) of the winding portion of the mounting wire member in the winding shaft is set to be larger than the diameter (R1) of the winding portions of the first wire member and the second wire member.

[0117] Therefore, when the spare tire is raised to the installation position by rotating the winding shaft, the first and second linear components can be relaxed.

[0118] If the first and second linear components slacken when the spare tire is in its mounting position, the spare tire can be lowered in the event of a rear-end collision, allowing it to move downwards and forwards. Therefore, according to this structure, a single operation—rotating the winding shaft—can prevent the spare tire from colliding with vehicle components in the event of a rear-end collision. In other words, the spare tire installation operation to prevent collisions with vehicle components in the event of a rear-end collision can be simplified.

[0119] Symbol Explanation

[0120] 1...vehicles

[0121] 2...High Voltage Components

[0122] 3...Spare tire

[0123] 4... Baggage compartment floor

[0124] 10...Spare tire mounting mechanism

[0125] 3a……Wheel Rim Section

[0126] 3b...Tire Department

[0127] Hc……Center Hole

[0128] Hf……Fixing hole

[0129] 11... Installation wire components

[0130] 12……Supporting components

[0131] 13... First linear component for preventing detachment

[0132] 14...Second linear component for preventing detachment

[0133] 15, 16... Support components

[0134] Ph, Pa, Pb... Support points

[0135] Support points during the descent of Pc, Pd...

[0136] 17……winding shaft

[0137] 17h…… Installation of wire-shaped component winding section

[0138] 17a……First linear component winding section

[0139] 17b……Second linear component winding section

[0140] 17g... Gear section

[0141] 18……Drive gear

[0142] Hu... contact hole

[0143] Hg……Tool mounting hole

[0144] 20……Driver tools

[0145] 20a……Handle section

[0146] 20b……shaft section.

Claims

1. A vehicle, comprising a spare tire mounting mechanism, wherein, The spare tire mounting mechanism is a suspended spare tire mounting mechanism, which has the following features: The mounting wire component is configured to support the spare tire from the side of the vehicle body when the spare tire is mounted on the vehicle, and to break in the event of a rear-end collision with the vehicle. A first linear component, which supports the spare tire from the vehicle side when the spare tire descends after the mounting linear component breaks; and A second linear component, positioned behind the first linear component, supports the spare tire from the vehicle side when the spare tire descends after the mounting linear component breaks. As the mounting cable breaks due to the rear impact, the spare tire moves downward and forward, becoming a state where the spare tire is supported from the side of the vehicle by the first cable and the second cable. The lengths of the first cable and the second cable are set so that the spare tire is in a forward-leaning posture in this state.

2. The vehicle according to claim 1, wherein, When the spare tire is supported from the vehicle side by the first linear component and the second linear component, the length from the support point of the second linear component on the vehicle side to the support point of the spare tire side is longer than the length from the support point of the first linear component on the vehicle side to the support point of the spare tire side.

3. The vehicle according to claim 1, wherein, With the spare tire installed, the first linear component and the second linear component are inserted into the wheel fixing component insertion holes formed on the rim portion of the spare tire.

4. The vehicle according to claim 1, wherein, The spare tire mounting mechanism has a winding shaft that winds all the linear components of the mounting linear component, the first linear component, and the second linear component upward.

5. The vehicle according to claim 4, wherein, In the winding shaft, the diameter of the winding portion of the mounting wire member is set to be larger than the diameter of the winding portions of the first wire member and the second wire member.

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