Wheel-mounted fall prevention device

Abstract

To provide a wheel chock anti-drop device that allows for easy removal and storage of wheel chocks.SOLUTION: A stopper 3 comprises a protrusion 5 provided at a tip of a belt plate 4, the protrusion 5 having a locking tab portion 5a as a base of a right triangle. The stopper 3 is provided at a wheel chock insertion opening of a wheel chock storage frame 1 installed on a vehicle cargo bed 9a.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a wheel chock fall prevention device. [Background technology]

[0002] Wheel chocks, also known as wheel chocks or tire chocks, are stoppers that are clamped onto tires to prevent vehicles from running away. They are mainly installed every time a vehicle is stopped during work on the road to reduce damage to the surrounding area caused by the vehicle running away due to forgetting to apply the parking brake when the work vehicle is stopped, or when a regular vehicle rear-ends the work vehicle.

[0003] An example of a wheel chock is shown in Figure 18. A wheel (tire) 101 mounted on a vehicle body has a tread portion 101a, and a wheel chock 102 has an inclined surface 102a that contacts this tread portion 101a and a handle portion 102b. The handle portion 102b may be a U-shaped handle.

[0004] Wheel chocks are used on a variety of vehicles, from standard to large, and are made of various materials, such as rubber and steel, depending on the purpose.

[0005] For example, the wheel chocks for vehicle signage vehicles are made of steel, are heavy, and have complex shapes, as opposed to the typical rubber wheel chocks. Figure 15 shows a steel wheel chock 2, and Figure 16 shows its use.

[0006] The steel wheel chock 2 has a tire storage section 2b between both side walls 2a, where there is a tire contact wall 2c, and below that is a ground contact surface 2d, and a U-shaped handle 2e on the back.

[0007] A wheel chock storage frame 1 for storing wheel chocks 2 is provided on a vehicle loading platform 9a of a truck vehicle 9 such as a sign vehicle, and a U-shaped frame 1a is attached to an installation plate 1b for the wheel chocks 2 of the wheel chock storage frame 1, and the wheel chocks 2 to be stored are inserted into the frame 1a by sliding them onto the installation plate 1b.

[0008] There are no prior art documents relating to the steel wheel chock 2 or the wheel chock storage frame 1. Summary of the Invention [Problem to be solved by the invention]

[0009] In this way, the wheel chock 2 is stored in the wheel chock storage frame 1, a dedicated storage area installed on the loading platform, but there have been cases where the wheel chock has come loose from the storage frame and fallen due to vehicle vibrations or strong winds.

[0010] To prevent the wheel chock from falling, a wire 10 is looped around the handle 2e of the wheel chock 2 as shown in Figure 17, and this wire 10 prevents the wheel chock 2 from slipping out of the wheel chock storage frame 1. However, this is extremely time-consuming as the wire 10 must be attached and removed every time the wheel chock 2 is removed for use or stored.

[0011] The object of the present invention is to eliminate the disadvantages of the conventional example and to provide a wheel chock fall prevention device that allows the wheel chock to be easily removed and stored in a wheel chock storage frame installed on the vehicle bed. [Means for solving the problem]

[0012] In order to achieve the above object, the present invention as described in claim 1 is characterized in that a band plate with a protrusion at the tip, the base of which is a right-angled triangle and serves as a locking piece, is provided as a fastener at the insertion opening of a wheel stopper storage frame installed on the vehicle loading platform.

[0013] According to the present invention as set forth in claim 1, even if the ring chock moves in the removal direction, the protrusion is caught on the fixing portion of the ring chock and does not come off.

[0014] To remove the stored wheel chock, hold the wheel chock in one hand and lift the stopper with the other hand, and the protrusion will disengage from the fixed part of the wheel chock, allowing you to pull the wheel chock out. Once it passes the fixed part, release the stopper and complete the removal of the wheel chock.

[0015] To store the wheel chock in the wheel chock storage frame installed on the vehicle bed, lift the wheel chock slightly and slide it along the frame, so that the wheel chock hits the hypotenuse of the right-angled triangular protrusion of the stopper, causing the stopper to spring up and push the wheel chock in. Once the wheel chock has been pushed in, the right-angled triangular protrusion of the stopper catches on the wheel chock, preventing it from falling.

[0016] The gist of the present invention as set forth in claim 2 is that the protrusion having the base of the right triangle as the locking piece is formed integrally with the band plate by bending the band plate.

[0017] According to the present invention described in claim 2, the protrusion with the base of the right triangle as the locking piece is formed by bending the band plate, so it can be formed as a single piece with the band plate without using a separate part from the band plate, and is stable in terms of strength.

[0018] The present invention as set forth in claim 3 is characterized in that the fastener is connected to a fixing plate that bolts the base of the band plate to the wheel stopper storage frame so as to be biased by a spring.

[0019] According to the present invention as set forth in claim 3, the fastener can be easily attached to and detached from the wheel fastener storage frame by bolting the fixing plate to the wheel fastener storage frame. The fastener has a band plate biased by a spring, and when storing the wheel fastener in the wheel fastener storage frame, the fastener is pushed up against the bias of the spring and the right-angled triangular protrusion of the fastener falls down due to the spring force, and is automatically caught on the wheel fastener.

[0020] The present invention as set forth in claim 4 provides a projection having a right-angled triangle base as a locking piece, and a right-angled triangle hypotenuse as a sliding member. Teflon (registered trademark) sheet The gist of this is to paste the following.

[0021] According to the present invention as set forth in claim 4, when storing the wheel chock in the wheel chock storage frame installed on the vehicle bed, the wheel chock comes into contact with the hypotenuse of the right-angled triangular protrusion of the fastener, causing the fastener to bounce up, thereby reducing frictional resistance and allowing the wheel chock to be pushed in smoothly.

[0022] The present invention as set forth in claim 5 is characterized in that the surface of the locking piece portion, which is the base of the right triangle, is roughened.

[0023] According to the present invention as set forth in claim 5, the surface of the locking piece portion, which is the base of the right triangle of the protrusion of the fastener, is roughened, which allows it to lock into the ring chock with high friction resistance and makes it less likely to come off even due to vibration, etc. [Effects of the Invention]

[0024] As described above, the wheel chock fall prevention device of the present invention allows the wheel chock to be easily removed from and stored in the wheel chock storage frame installed on the vehicle bed. [Brief explanation of the drawings]

[0025] [Figure 1] 1 is a perspective view showing one embodiment of a wheel stopper fall prevention device of the present invention. FIG. [Figure 2] 10 is a perspective view from another angle showing one embodiment of the wheel stopper fall prevention device of the present invention. FIG. [Figure 3] FIG. 2 is a perspective view of the base portion of the fastener of the wheel stopper fall prevention device of the present invention. [Figure 4] 1 is a perspective view of the wheel chock fall prevention device of the present invention, in which the stopper is locking the wheel chock. FIG. [Figure 5] FIG. 10 is a perspective view of a first step of the process of removing a stored wheel chock. [Figure 6] FIG. 10 is a perspective view of a second step of the process of removing the stored wheel chock. [Figure 7] FIG. 10 is a perspective view of a third step of the process of removing the stored wheel chock. [Figure 8] FIG. 10 is a perspective view of a fourth step in the process of removing the ring chock. [Figure 9] FIG. 10 is a perspective view showing a first step of storing the wheel chock in the wheel chock storage frame. [Figure 10] FIG. 10 is a perspective view showing a second step of storing the wheel chock in the wheel chock storage frame. [Figure 11] FIG. 10 is a perspective view showing a third step of storing the wheel chock in the wheel chock storage frame. [Figure 12] FIG. 10 is a perspective view of a fastener with a Teflon (registered trademark) sheet attached. [Figure 13] FIG. 1 is a perspective view of a ring chock with a Teflon (registered trademark) sheet attached. [Figure 14] 10A and 10B are explanatory diagrams of a fastener and a ring stopper having a rough surface. [Figure 15] FIG. 1 is a perspective view of a steel chock. [Figure 16] FIG. 1 is a perspective view showing a steel ring clamp in use. [Figure 17] FIG. 10 is a perspective view showing a conventional example. [Figure 18] FIG. DETAILED DESCRIPTION OF THE INVENTION

[0026] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Figure 1 is a perspective view showing one embodiment of a wheel chock fall prevention device of the present invention, in which 1 denotes a wheel chock storage frame.

[0027] The wheel chock storage frame 1 is installed on the vehicle loading platform 9a of a truck vehicle 9 such as a sign vehicle, and the U-shaped wheel chock storage frame 1 is attached to the installation plate 1b of the wheel chock 2, and the wheel chock 2 to be stored is inserted into the wheel chock storage frame 1 by sliding it along the installation plate 1b.

[0028] As explained in Figure 15, the wheel chock 2 stored in this wheel chock storage frame 1 has a tire storage section 2b between both side walls 2a, where there is a tire abutment wall 2c, and below that is a ground contact surface 2d, and a U-shaped handle 2e on the back.

[0029] The present invention involves attaching a stopper 3 to the insertion opening of the wheel stopper storage frame 1. The stopper 3 is formed by providing a protrusion 5 at the tip of a metal strip 4 such as a steel plate or stainless steel plate, with the base of the right triangle being the locking piece 5a.

[0030] The protrusion 5 of the stopper 3, which has the base of the right triangle as the locking piece 5a, is formed integrally with the band plate 4 by bending the band plate 4.

[0031] The stopper 3 is formed by bending the base 4a of the band plate 4, and this bent portion is connected to a fixing plate 6 which is bolted to the wheel stopper storage frame 1 with a bolt 11 so as to be biased by a spring.

[0032] The fixing plate 6 and the base 4a of the band plate 4 are axially connected at their flanges, and are connected so as to be biased by a coil spring 12 interposed between them. In this way, the fixing plate 6 and the base 4a of the band plate 4 constitute a clip mechanism.

[0033] As shown in FIG. 12, the base of the right triangle of the protrusion 5 has a locking piece 5a, and the hypotenuse of the right triangle is provided with a sliding member. Teflon (registered trademark) sheet I pasted 7.

[0034] As shown in Figure 13, Teflon (registered trademark) sheet 7 was also attached to the location where the stopper 3 of the wheel stopper 2 abuts.

[0035] Furthermore, as shown in FIG. 14, the surface of the locking piece 5a, which is the base of the right triangle of the projection 5, is roughened by attaching sandpaper or the like.

[0036] Accordingly, the area where the locking piece 5a of the stopper 3 of the wheel stopper 2 comes into contact is also pasted with sandpaper or the like to make the surface rough 8.

[0037] Next, we will explain how to use it. The stopper 3 of the present invention is attached by bolts to a wheel stopper storage frame 1 provided on the vehicle bed 9a of a truck vehicle 9 such as a sign vehicle, and protrudes from the frame 1a parallel to the installation plate 1b of the wheel stopper storage frame 1 as shown in Figure 1.

[0038] To store the wheel chock 2 in the wheel chock storage frame 1, lift the wheel chock 2 slightly as shown in Figure 9 and slide it along the installation plate 1b.The wheel chock 2 will then hit the hypotenuse of the right-angled triangular protrusion of the stopper 3, causing the stopper 3 to spring up and the wheel chock to be pushed in.

[0039] When this is done, the base of the right triangle of the stopper 3 is attached to the hypotenuse of the right triangle of the protrusion 5, which serves as the locking piece 5a. Teflon (registered trademark) sheet The Teflon (registered trademark) sheet 7 of the wheel chock 2 overlaps with the Teflon (registered trademark) sheet 7 of the wheel chock 2, eliminating frictional resistance and making it easy to slide, so that the wheel chock 2 can be easily pushed in.

[0040] When the fastener 3 is fully inserted, the right-angled triangular projection 5 of the fastener 3 catches on the wheel chock 2, preventing the wheel chock from falling. A spring acts to bias the projection 5 to the wheel chock 2.

[0041] As described above, the locking piece portion 5a, which is the base of the right triangle of the protrusion 5, has its surface roughened by attaching sandpaper or the like, and the place where the locking piece portion 5a of the fastener 3 of the wheel chock 2 abuts is also roughened by attaching sandpaper or the like, and when the surface is roughened by attaching sandpaper or the like, the rough surfaces 8 join together and become difficult to come off.

[0042] On the other hand, to remove the stored chock 2, hold the chock 2 with one hand as shown in Figure 5, and use the other hand to lift the stopper 3 against the spring as shown in Figure 6. This will cause the protrusion 5 to come off the fixing part of the chock 2 as shown in Figure 7, allowing you to remove the chock 2. Once it has passed the fixing part, release your hand from the stopper to complete the removal of the chock. [Explanation of symbols]

[0043] 1...Wheel stopper storage frame 1a...Storage frame 1b...Installation plate 2...Ring stopper 2a...Both side walls 2b...Tire storage area 2c…Tire contact wall 2d…Tread surface 2e...Handle 3...Clasp 4...Belt 4a...Root 5...Protrusion 5a...Locking piece part 6…Fixing plate 7… Teflon (registered trademark) sheet 8...Rough surface 9...Truck vehicle 9a...Vehicle loading platform 10...Wire 11...Bolt 12...Coil spring 101... Wheel (tire) 101a... Tread portion 102... Wheel stopper 102a... Inclined surface 102b...Handle part

Claims

1. This wheel chock fall prevention device is characterized in that a stopper having a protrusion with the base of a right triangle as a locking piece at the tip of a band plate is attached to the wheel chock insertion port of a wheel chock storage frame installed on the vehicle bed.

2. 2. A wheel stopper fall prevention device according to claim 1, wherein the projection having the base of the right triangle as the locking piece is formed integrally with the band plate by bending the band plate.

3. 2. The wheel stopper fall prevention device according to claim 1, wherein the stopper is connected to a fixing plate that bolts the base of the band plate to the wheel stopper storage frame so as to be biased by a spring.

4. 3. A wheel stopper fall prevention device according to claim 1 or 2, wherein a Teflon (registered trademark) sheet is attached as a sliding material to the hypotenuse of the right triangle of the protrusion, the base of which is the locking piece.

5. 3. A wheel stopper fall prevention device according to claim 1 or 2, wherein the surface of the locking piece portion which is the base of the right triangle is roughened.

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