JPH0126533Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a tire that can firmly fix the tire when catching the tire of a vehicle such as an automobile, and also strengthens its support strength and ensures high reliability. Regarding the stopper.

Conventional tire stops of this type have multiple recesses arranged on the tire receiving surface of the tire receiving plate that comes into contact with the tire to strengthen its strength, but this tire receiving surface is generally a flat surface. Because it was formed on a curved surface, the surface pressure against the tire was small, and there was a certain limit to the ability to fix the tire.Also, due to the internal structure and strength of each part, the tire receiving plate could be crushed after receiving the tire. The reliability of this type of equipment and the safety of operations using tire chocks have been a problem, as they can be crushed or overturned.

The present invention eliminates these conventional drawbacks, firmly fixes the tire when catching the tire, and strengthens the support strength of each part, ensuring high reliability and work safety for this type of device. Furthermore, it is an object of the present invention to provide a tire stopper that is made smaller and lighter.

For this reason, the tire stopper of the present invention has a bead-shaped contact protrusion projecting upward from the tire receiving surface at the upper end, an elongated recess at the lower part, and a slit-like elongated hole formed in the recess. , and a tire receiving plate provided with edge-shaped grounding parts that can land on the road surface on both sides of the lower end, a locking part that can be engaged with and detached from the inner surface of the contact protrusion on the upper end, and a tire receiving plate that can land on the road surface on the lower end. A possible pair of ground contact parts, a support member formed by bending a round bar with a shaft part disposed above the ground contact parts, and a tire support plate and a lower end of the support member are connected, and these are connected. a foldable connecting plate, one end of the connecting plate is provided with an upwardly bent bent engagement part, and the engaging part is inserted into the elongated hole from the inside and accommodated in the recess; A pivot part is provided at the other end of the connecting plate with the end edge wound downward, the pivot part is rotatably attached to the shaft part, and the rolled end edge is positioned upward inside the shaft part, It is characterized in that a bead-shaped protrusion projecting downward is provided on the connecting plate, and the end of the protrusion is disposed close to the above-mentioned rolled edge so as to be able to come into contact with it.

Hereinafter, one embodiment of the present invention will be explained with reference to the drawings. In Figs. 1 to 4, reference numeral 1 denotes a rectangular horizontally elongated connecting plate made of, for example, a steel plate. A molded elongated protrusion 2 is provided, and both ends 2 of this protrusion 2
A pivot portion 3 and a bending engagement portion 4 are formed at positions adjacent to a and 2b. Of these, the pivot portion 3 is connected to the connecting plate 1.
A rolled-up edge 3a is formed into an annular shape by rolling the end of one short side downward, and is positioned inside the rolled-up edge 3a.
is arranged close to the end portion 2a. Therefore, even if the lower end of the support member (to be described later) expands when receiving a tire, and the connecting plate 1 that connects it is pulled outward to unwind the pivot portion 3, the end portion 2a will be unwound. By engaging with the inset edge 3a and preventing the above-mentioned unwinding, the connecting force of the relevant portion is strengthened. The bent engagement portion 4 is formed by bending the end of the other short side of the connecting plate 1 upwardly,
It is inserted from the inside into the long hole described later.

Reference numeral 5 denotes a support member that is attached to the pivot portion 3 so as to be able to be raised and lowered, and in this embodiment, it is constructed by bending a round bar-shaped steel member into a substantially U-shape, and as shown in FIG. is provided with grounding parts 7, 7 that can land on the road surface 6, and between these grounding parts 7 is arranged a shaft part 8 with the inner end of the part 7 bent inward, and this shaft part 8 is connected to the pivot point. 3 and is rotatably connected to the pivot portion 3. Therefore, the connecting plate 1 is located above the road surface 6 and does not land on the road surface 6 when the device is used. 5b, 5b are leg parts formed by bending both ends of the fixing part 5a inward; 9, 9 are locking parts formed by bending the ends of the leg parts 5b, 5b inward; these are coaxially located, and It is formed parallel to the grounding portions 7, 7.

10 is a wide and gently concave tire bearing surface 10a
This is a rectangular tire receiving plate, which is made of, for example, a steel plate, and has a horizontally elongated recess 11 formed at its lower end. A slit-like elongated hole 12 is opened at the lower end of the recess 11, and the bending engagement portion 4 is inserted into the hole 12 and accommodated in the recess 11.

Therefore, when receiving the tire, the bending engagement portion 4
is located at the same level as the tire receiving surface 10a,
When the tire is received, the lower end of the support member 5 expands, and the connecting plate 1 that connects it is pulled outward, and the opening edge of the elongated hole 12 that engages with the bending engagement portion 4 is attempted to break upward. Also, since the rigidity around the part is strengthened by the recess 11, the above-mentioned breakage is prevented and the connecting force of the part is strengthened. In the figure, 13 is a reinforcing recess, and 13a is the recess 1
This is the edge of 3.

Further, a bead-shaped contact protrusion 14 having a substantially U-shaped cross section is provided on the entire upper end of the tire receiving plate 10, and is molded to protrude upward from the tire receiving surface 10a, and its outer edge extends inward in the tangential direction. The engaging edge 15 is bent to form an engaging edge 15, which prevents the locking portion 9 accommodated in the inner circumferential surface of the contact projection 14 from coming off when the tire is received. In the figure, reference numerals 16 and 16 are contact protrusions molded upward from the lower edge of the tire receiving plate 10, which protrude upward from the tire receiving surface 10a, and reference numeral 17 is a horizontally elongated contact protruding from the upper part of the recess 11 in the form of a bead. It is a protrusion and protrudes upward from the tire receiving surface 10a. 18, 18 is the tire receiving plate 10
When the tire receiving plate 10 is folded, the connecting plate 1 is accommodated between these inner protrusions 18 and 18 to prevent its lateral movement. It is designed to be integrated when carried.

In addition, reference numerals 19 and 19 are side pieces formed by bending both side edges of the tire receiving plate 10 inward, and the lower end thereof has an edge-shaped grounding portion 2 cut out to enable the tire to land on the road surface 6.
0 and 20 are provided. T ₁ and T ₂ are tires having a small diameter and a large diameter.

When the tire stopper configured in this manner is not in use, the support member 5 and the tire receiving plate 10 are engaged with the inner circumferential surfaces of the locking portions 9, 9 and the contact protrusion 14, as shown in FIG. The tire support member 5 and the connecting plate 1 are folded inwardly around the shaft portion 8 or the bent portion 4a, and the support member 5 and the connecting plate 1 are housed inside the tire receiving plate 10, thereby being folded compactly. in this case,
At both ends of the connecting plate 1, the supporting member 5 and the base end of the tire receiving plate 10 maintain a connected state, and the bent outer ends of the locking parts 9, 9, that is, the leg parts 5b, 5b are folded. Since the tire receiving plate 10 is regulated and accommodated by the side pieces 19, 19 of the tire receiving plate 10, the folded state as described above is possible. Moreover,
When the connecting plate 1 is folded, the tire receiving plate 1
Since both sides are held by the inner protrusions 18, 18 formed at zero, lateral movement and rattling are prevented, and a folded state integral with the tire receiving plate 10 can be obtained. 5 is also formed into an integral folded state by engagement with the inner surfaces of both side pieces 19, 19 due to the spring back action of the locking portions 9, 9.

When using the tire stopper folded in this manner, the fixing portion 5a of the support member 5 and both side pieces 19, 19 of the tire receiving plate 10 are held, and, for example, the tire receiving plate 10 is held on both side pieces 19, 19. 4, against the clamping pressure of
8 and the connecting plate 1, and further bend the engaging portion 4.
until the edge of the tire receiving plate 10 engages with the recess 11.
to maintain this state. Next, hold the leg portion 5b of the support member 5 and pull it upward in the same figure, and lock the locking portions 9, 9 onto the contact protrusion 1.
4 and maintain their raised angles with each other, and frame the connecting plate 1, the supporting member 5, and the tire receiving plate 10 in a triangular shape as shown in FIG.

Next, when using the thus-framed tire stopper to stop the tires of a vehicle such as an automobile that is stopped at a predetermined position, hold the framed tire stopper and place it on the tire receiving surface 10a. is inserted between the landing surface and the road surface 6 on the landing side, with the tire facing the landing surface of the tire. The tire stopper inserted in this way is attached to the tire receiving surface 10 as shown in FIG.
The support member 5 and the tire receiving plate 10 land on the road surface 6 via the grounding portions 7 and 20, and maintain their standing posture.

In this case, the ground contact parts 7, 7 are in line contact with the road surface 6, and the other ground contact parts 20, 20 are formed in an edge shape, so that the contact surface pressure between them is strengthened, and the contact surface pressure between these contact surfaces is strengthened. Since the biting of the parts 7 and 20 into the road surface 6, more precisely into the uneven parts of the road surface 6, is strengthened, the stability of the tire stopper is maintained, and the tire receiving plate 10 and the support member 5 are
is prevented from expanding at each lower end of the connecting plate 1.
This will reduce the tensile force acting on the In this case, if the road surface 6 is soft, the connecting plate 1 will land on the ground in addition to the ground contact parts 7 and 21 to compensate for its stability, so the tire stopper can be used even on the road surface 6 in poor conditions. It becomes possible.

And when using this tire stopper,
For example, if the outer diameter of the tire is relatively small,
As shown by the _T1 curve in Figure 1, the tire bearing surface 10a
The contact protrusions 16 and 17 formed at the bottom of the tire
T ₁ and firmly holds the tire T ₁ by its kind of wedge-like action, while if the outer diameter of the tire is relatively large, as shown by the T ₂ curve in Figure 1. Contact protrusions 14 and 17 formed at the upper and lower parts of the tire receiving surface 10a come into contact with the tire _T2 , and firmly receive the tire _T2 by a kind of wedge action. In this case, the contact protrusion 14,1
7 is formed in a bead shape over the width direction of the tire receiving surface 10a, so that line contact with the tires T ₁ and T ₂ can be ensured over a wide area, and the tire
In addition to promoting the fixation of T ₁ and T ₂ , the tire bearing surface 1
This makes it possible to prevent the curved displacement of 0a.

Further, when the tire is received, the lower end of the support member 5 is oriented to expand as described above, and there is a risk that the pivot portion 3 connected to the shaft portion 8 of the member 5 may be unwound. However, in this case, the rolled-up edge 3a of the pivot portion 3 is located upwardly inside the shaft portion 8, and the end 2 of the protruding portion 2 is located close to the edge 3a.
Since the portions a are close enough to contact each other, unwinding of the pivot portion 3 is prevented, and the connection by the pivot portion 3 is maintained.

On the other hand, when the connecting plate 1 receives a tensile force through the support member 5, the bending engagement part 4 provided at the other end strengthens the engagement with the upper opening edge of the elongated hole 12, and the edge of the recess 11 is directed upward. There is a risk of breakage. However, in this case, since the rigidity of the part is strengthened by the recess 11, the breakage is prevented and the connection by the bending engagement part 4 is maintained. Therefore, when receiving a tire, the strength of both parts 3 and 4 is further strengthened, so the tire chock will not be crushed by the load, making it easier to work with the tire chock. This can be done safely.

After wearing the tire stopper in this way, when jacking up the car and performing maintenance and inspection work on the car, for example, the tire receiving surface 10a
The center of gravity of the load on top will move upwards, affecting its support situation. However, in this case, the ground contact part 20 of the tire receiving plate 10 is formed in the shape of an edge, and the contact area with respect to the road surface 6 is very small, so a strong surface pressure is ensured despite the shift of the center of gravity of the load, and Since the wedge-like action of the contact protrusions 14 and 17 is further strengthened, it is possible to prevent the tire chock from moving backward or sideways, thereby firmly holding the vehicle in place and ensuring the safety of work using the tire chock. can do.

On the other hand, when removing the tire stopper after completing the specified work, place the tire stopper between the tire landing surface and the road surface.
Pull out the side piece 19 of the tire receiving plate 10 from between the
and the leg portions 5b of the support member 5, and hold the tire receiving plate 1.
0 slightly, then release the engagement between the inner peripheral surface of the contact protrusion 14 and the locking parts 9, 9 of the support member 5,
Fold the support member 5 inward, then turn the tire support plate 10
It can be folded compactly by folding it inward, sandwiching the locking parts 9, 9 in the side pieces 19, 19, and pushing both side edges of the connecting plate 1 between the inner protrusions 18, 18. This makes it convenient to carry around. In this case, since only the ground contact parts 7 and 21 have touched down on the road surface 6, the dirt caused by landing on the road surface can be kept to a minor level, and the dirt can be wiped off comfortably and quickly without getting the hands and fingers dirty. .

As described above, the tire stopper of the present invention has a bead-shaped contact protrusion that protrudes above the tire receiving surface at the upper end of the tire receiving plate, so when in use, the tire is strengthened by a kind of wedge-like effect. This effect is particularly suitable for fixing tires of large vehicles.

In addition, in the present invention, edge-shaped ground contact parts that can land on the road surface are provided on both sides of the lower end of the tire receiving plate, and the support member is formed by bending a round bar, so that the ground contact parts provided on the member are aligned with the road surface. Because I made it possible to contact you,
Together, the contact surface pressure against the road surface can be strengthened, and the bite into the road surface or its uneven parts is strengthened, improving the landing posture and stability when receiving the tire. By preventing them from opening, it is possible to reduce the tensile force on the connecting plates that connect them.

Furthermore, in the present invention, a pivot part is provided at the other end of the connecting plate, the end edge of which is rolled downward, and the pivot part is rotatably attached to the shaft part, and the rolled end edge is attached to the inner side of the shaft part. Positioned upward, a bead-shaped protrusion is provided on the connecting plate and protrudes downward, and the end of the protrusion is arranged close to the above-mentioned rolled edge so as to be able to come into contact with it,
Because I tried to prevent the central branch from unraveling,
The connection of the pivot portion can be firmly maintained when the tire is received.

Moreover, in this invention, a recess is provided at the bottom of the tire receiving plate to strengthen the rigidity around the recess, so that when the tire is received, the long hole is connected to the long hole through the bent engagement part that is inserted into the long hole in the recess. Even if a breaking action occurs, there are practical effects such as being able to prevent this and firmly maintain the connection by the bending engagement portion.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the present invention together with the state of use, and a partially cutaway sectional view, Fig. 2 is a plan view of Fig. 1, and Fig. 3 is an A of Fig. 2. A sectional view taken along line -A' and FIG. 4 are front views showing the folded state of the present invention. 1... Connection plate, 2... Protrusion, 2a... End,
3... Pivotal portion, 3a... Winding edge, 4... Bent engagement portion, 5... Support member, 6... Road surface, 7, 20...
...Grounding part, 8...Shaft part, 9...Locking part, 10...
Tire receiving plate, 10a... Tire receiving surface, 11... Recessed portion, 12... Elongated hole, 14... Contact protrusion.

Claims (1)

[Scope of utility model registration request] The upper end has a bead-shaped contact protrusion that protrudes above the tire receiving surface, and the lower part has an elongated recess and a slit-like hole is formed within this recess, allowing it to land on the road surface on both sides of the lower end. a tire receiving plate provided with an edge-shaped grounding part; a locking part that is detachable from the inner surface of the contact protrusion at the upper end; a pair of grounding parts capable of landing on a road surface at the lower end; and these grounding parts. It consists of a support member formed by bending a round bar with a shaft disposed above the tire support plate, and a connecting plate that connects the tire receiving plate and the lower end of the support member and makes them foldable. A bent engaging portion bent upward is provided at one end of the connecting plate, and the engaging portion is inserted into the elongated hole from the inside and accommodated in the recess, while the other end of the connecting plate is provided with an edge bent downward. A rolled-up pivot part is provided, the pivot part is rotatably attached to the shaft part, and the rolled end edge is positioned upwardly inside the shaft part, and a bead-shaped part is provided that projects downward from the connecting plate. A tire stopper characterized in that a protrusion is provided, and an end of the protrusion is disposed close to the winding edge so as to be able to come into contact with the winding edge.