KR102584807B1 - Stud pin and tire having the same - Google Patents

Abstract

One embodiment of the present invention is a fixing member that is inserted and fixed into a stud fixing groove formed in the tread portion of a tire and has a receiving groove formed therein, and is accommodated in the receiving groove of the fixing member, but is moved to the outside of the tread portion by an external force. A stud pin is provided, including a protruding member accommodated in a receiving groove of the fixing member to enable two-stage protrusion in two directions, and an elastic member providing elastic force between the protruding member and the fixing member.

Description

Stud pin and tire having the same {Stud pin and tire having the same}

Embodiments of the present invention relate to stud pins and tires having the same.

In general, tires perform roles such as supporting the load of the vehicle, cushioning, transmitting power, changing direction, and maintaining the vehicle. For this purpose, it is made up of a sturdy structure such as a thick rubber layer called the tread and a carcass that forms the frame of the tire, and maintains an appropriate air pressure to withstand the load. In such tires, in order to demonstrate performance such as braking power, driving power, turning power, drainage, etc., the tread is provided with a plurality of longitudinal grooves formed in the circumferential direction and a plurality of transverse grooves formed in the width direction, and a plurality of grooves are formed by the grooves. A tread block is formed.

Meanwhile, tires equipped with stud fins that enable stable driving even on frozen roads or roads slippery with snow are widely used. Stud pins are mainly made of alloy metal pieces, and inserting multiple stud pins into the tread of a tire increases the grip on the ground. Tires equipped with stud pins not only transmit braking force and driving force through direct friction between rubber and the ice surface, but can also increase the effect by the stud pins acting on the ice surface. To achieve this effect, the stud pins must protrude somewhat from the tread and remain protruding from the tread plane.

However, the conventional stud pins are prone to wear due to their protruding shape and quickly deteriorate in function, and tires equipped with such stud pins have poor driving performance on icy surfaces due to wear of the stud pins, so they are used as general tires. There is a problem that the lifespan is much shorter than that of

An embodiment of the present invention seeks to provide a stud pin that can maintain performance even when the stud pin is worn, and a tire including the same.

One embodiment of the present invention is a fixing member that is inserted and fixed into a stud fixing groove formed in the tread portion of a tire and has a receiving groove formed therein, and is accommodated in the receiving groove of the fixing member, but is moved to the outside of the tread portion by an external force. A stud pin is provided, including a protruding member accommodated in a receiving groove of the fixing member to enable two-stage protrusion in two directions, and an elastic member providing elastic force between the protruding member and the fixing member.

In one embodiment of the present invention, the protruding member may include a pillar part extending outward from the tread part and a screw part disposed at one end of the pillar part and having a screw formed on the outer peripheral surface.

In one embodiment of the present invention, the protruding member is disposed at the other end opposite to one end of the pillar portion, and may further include a protrusion that protrudes outward when no external force is applied.

In one embodiment of the present invention, the diameter of the protrusion may be smaller than the diameter of the pillar portion.

In one embodiment of the present invention, the protruding member may have a concave guide groove formed in a portion of the protruding member and the pillar portion toward the inside of the protruding member.

In one embodiment of the present invention, the fixing member is located on the inner peripheral surface of the lower end of the receiving groove and includes a fixing protrusion formed in a shape corresponding to the screw portion of the protruding member, and the fixing protrusion is located on the inner peripheral surface of the lower end of the receiving groove. The protruding member can be fixed in a compressed state.

In one embodiment of the present invention, the fixing member is located on the outer peripheral surface of the upper end of the receiving groove spaced a certain distance away from the fixing protrusion, and may include a screw thread formed in a shape corresponding to the screw portion of the protruding member.

One embodiment of the present invention includes a tread portion in contact with the ground and one or more stud pins provided on the tread portion, wherein the stud pins are inserted and fixed into a stud fixing groove formed on the tread portion of the tire, and are accommodated therein. A fixing member with a groove formed in it, a protruding member received in the receiving groove of the fixing member, and accommodated in the receiving groove of the fixing member so as to be able to protrude in two steps toward the outside of the tread portion by an external force, and the protruding member and the A tire is provided, including an elastic member that provides elastic force between fixing members.

In one embodiment of the present invention, the protruding member may include a pillar part extending outward from the tread part and a screw part disposed at one end of the pillar part and having a screw formed on the outer peripheral surface.

In one embodiment of the present invention, the protruding member is disposed at the other end opposite to one end of the pillar portion, and may further include a protrusion that protrudes outward when no external force is applied.

In one embodiment of the present invention, the diameter of the protrusion may be smaller than the diameter of the pillar portion.

In one embodiment of the present invention, the protruding member may have a concave guide groove formed in a portion of the protruding member and the pillar portion toward the inside of the protruding member.

In one embodiment of the present invention, the fixing member is located on the inner peripheral surface of the lower end of the receiving groove and includes a fixing protrusion formed in a shape corresponding to the screw portion of the protruding member, and the fixing protrusion is located on the inner peripheral surface of the lower end of the receiving groove. The protruding member can be fixed in a compressed state.

In one embodiment of the present invention, the fixing member is located on the outer peripheral surface of the upper end of the receiving groove spaced a certain distance away from the fixing protrusion, and may include a screw thread formed in a shape corresponding to the screw portion of the protruding member.

Other aspects, features and advantages in addition to those described above will become apparent from the following drawings, claims and detailed description of the invention.

The stud pin according to embodiments of the present invention allows the protruding member to protrude in two stages, so that performance can be restored even if one surface of the stud pin is worn.

In addition, tires according to embodiments of the present invention can maintain stable driving performance on snowy and icy roads and extend their lifespan by providing protruding members with stud pins capable of protruding in two stages.

1 is a perspective view schematically showing a tire according to an embodiment of the present invention.
Figure 2 is a cross-sectional view showing a stud pin according to an embodiment of the present invention.
FIG. 3 is a diagram to explain releasing the fixation when the stud pin shown in FIG. 2 is worn.
Figure 4 is a diagram showing the first form of the stud pin of Figure 3.
Figure 5 is a diagram showing a worn state of the stud pin of Figure 4.
FIG. 6 is a diagram showing a second form of deriving the stud pin of FIG. 5.

Hereinafter, the following embodiments will be described in detail with reference to the accompanying drawings. When describing with reference to the drawings, identical or corresponding components will be assigned the same reference numerals and duplicate descriptions thereof will be omitted.

Since various transformations can be made to these embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. The effects and features of the present embodiments and methods for achieving them will become clear by referring to the detailed description below along with the drawings. However, the present embodiments are not limited to the embodiments disclosed below and may be implemented in various forms.

In the following embodiments, terms such as first and second are used not in a limiting sense but for the purpose of distinguishing one component from another component.

In the following examples, singular expressions include plural expressions, unless the context clearly dictates otherwise.

In the following embodiments, terms such as include or have mean the presence of features or components described in the specification, and do not exclude in advance the possibility of adding one or more other features or components.

In the following embodiments, when a part of a unit, area, component, etc. is said to be on or on another part, it is not only the case where it is directly on top of the other part, but also when other units, areas, components, etc. are interposed between them. Also includes cases.

In the following embodiments, terms such as connect or combine do not necessarily mean a direct and/or fixed connection or combination of two members, unless the context clearly indicates otherwise, and do not mean that another member is interposed between the two members. It's not exclusion.

This means that the features or components described in the specification exist, and does not preclude the possibility of adding one or more other features or components.

In the drawings, the sizes of components may be exaggerated or reduced for convenience of explanation. For example, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of explanation, so the following embodiments are not necessarily limited to what is shown.

Figure 1 is a perspective view schematically showing a tire 1 according to an embodiment of the present invention.

Referring to FIG. 1, a tire 1 according to an embodiment of the present invention may include a tread portion 11 and a side wall portion 12 extending from both sides of the tread portion 11, and the tread portion 11 ) may be provided with a stud pin (10).

The tread portion 11 is located on the outermost side of the tire 1 and is made of a thick rubber layer to transmit the driving force and braking force of the vehicle to the ground. On the surface of the tread portion 11, grooves 14 for drainage when driving on a wet road surface and tread blocks 16 for steering stability, traction, and braking may be located.

The groove 14 may include a circumferential groove that matches the driving direction of the vehicle and a transverse groove between the circumferential grooves. The tread block 16 is an area that occupies most of the tread portion 11 and is in direct contact with the ground to transmit the driving force and braking force of the vehicle to the ground. The tread blocks 16 may include a plurality of grooves 14 for drainage and sipes for improving traction and braking force when driving on a wet road surface. The sipe is formed in the tread block 16 and may be a groove having a smaller size than the groove 14. Sipes can increase the driving and braking power of the tire (1) by absorbing moisture and breaking the water film when driving on a wet road surface.

The side wall portion 12 is arranged to extend downward from the end of the tread portion 11. The side wall portion 12 is a side part of the tire 1, protects the carcass layer, provides lateral stability of the tire 1, and can improve riding comfort by performing a flexion/extension movement. Additionally, the side wall portion 12 serves to transmit engine torque received through the drive shaft to the tread portion 11.

As shown in FIG. 1, the grip on the ground can be improved by inserting a stud pin 10 into the tread portion 11 of the tire 1. At this time, although not shown in the drawing, a stud fixing groove may be formed in the tread portion 11 in a shape that can accommodate a stud pin, and the stud pin 10 can be inserted into the stud fixing groove and fixed. The tire 1 may be provided with one or more stud pins 10, and the stud pins 10 may be arranged regularly or irregularly.

Figure 2 is a cross-sectional view of the stud pin 10 according to an embodiment of the present invention.

Referring to FIG. 2, the stud pin 10 according to an embodiment of the present invention may include a fixing member 100, a protruding member 200, and an elastic member 300.

The fixing member 100 may be fixed by being inserted into a stud fixing groove formed in the tread portion 11 of the tire 1. The fixing member 100 functions to prevent the stud pin 10 from being separated from the tire 1 or being damaged, moved, or rotated due to pressure while inserted into the stud fixing groove, and has a protruding member 200 inside. And it may serve to accommodate the elastic member 300 to protrude or fix the protruding member 200.

A locking portion 110 may be formed at the bottom of the fixing member 100 to prevent the stud pin 10 from escaping. The fixing member 100 has a hollow interior and has a protruding member 200 inside. ) A receiving groove 101 that can accommodate can be formed. In addition, the fixing member 100 may include a fixing protrusion 120, a guide portion 130, and a screw thread 140 that allow the protruding member 200 to be fixed or moved on the inner peripheral surface of the receiving groove 101. .

The fixing protrusion 120 is located on the inner peripheral surface of the lower end of the receiving groove 101, and the screw thread 140 may be located on the outer peripheral surface of the upper end of the receiving groove 101 at a certain distance from it. The fixing protrusion 120 and the screw thread 140 may be formed in a shape corresponding to the screw portion 230 of the protruding member 200. As a result, the protruding member 200 moves along the guide portion 130 inside the receiving groove 101 and can be primarily fixed at the lower end fixing protrusion 120 and secondarily fixed at the upper end screw thread 140. It becomes possible.

In general, the protruding member 200 is connected to the fixing member 100 with the elastic member 300 interposed therebetween, so that an elastic force to protrude outward can be applied. The fixing protrusion 120 can perform the function of fixing the protruding member 200 so that it does not protrude to the outside while the elastic member 300 is compressed. If necessary, the user rotates the protruding member 200 to fix it. The state can be canceled and the protruding member 200 can be primarily protruded.

The screw thread 140 can primarily perform the function of fixing the protruding member 200 in a protruding state, and if necessary, the user rotates the protruding member 200 along the screw thread 140 to fix the protruding member 200. ) can be made to protrude additionally. Accordingly, the protruding member 200 may be able to protrude in two steps toward the outside of the tread portion 11 by an external force.

The protruding member 200 accommodated in the receiving groove 101 of the fixing member 100 may include a protruding part 210, a pillar part 220, and a screw part 230. As the protruding member 200 protrudes outward from the tread portion 11 and is exposed outside the stud fixing groove, it has a surface that first contacts the ground and can provide friction on slippery ground such as ice.

The pillar portion 220 of the protruding member 200 is a part of the body of the protruding member 200, and serves to maintain the rigidity of the stud pin 10 and absorb a certain amount of shock transmitted to the tire 1 from the road surface. It can also be performed. The pillar portion 220 is formed in a pillar shape and may further include a screw portion 230 at one end and a protrusion 210 and a guide groove 205 at the other end.

The screw portion 230 of the protruding member 200 is disposed at one end of the pillar portion 220, and the outer peripheral surface of one end is formed in a screw shape corresponding to the fixing protrusion 120 or screw thread 140 of the fixing member 100. It may serve to secure the protruding member 200 to the fixing member 100.

The protrusion 210 of the protruding member 200 is disposed at the other end opposite to one end of the pillar portion 220, and may have a shape that protrudes outward from the tread portion 11 in a state in which no external force is applied. there is. As shown in FIG. 2, the diameter W1 of the protrusion 210 may be smaller than the diameter W2 of the pillar portion 220. These protrusions 210 make contact with the ground first when the car is running and play a role in increasing braking force and grip force, but due to friction with the ground, wear is bound to be faster than other parts of the tire 1.

The guide groove 205 of the protruding member 200 may be formed concavely toward the inside of the protruding member 200 on a portion of the protruding member 210 and the pillar 220, and may be fixed to the fixing member 100 by the user. It may be a part that applies a force that allows the protruding member 200 to protrude toward the outside of the tread portion 11. The guide groove 205 may be formed to a preset depth of the pillar portion 220 so that the user can easily rotate the protruding member 200 even after the protruding member 200 is initially protruded and worn.

The elastic member 300 is disposed in the receiving groove 101 of the fixing member 100 and is located between the lower surface of the receiving groove 101 of the fixing member 100 and the lower surface of the protruding member 200. It is possible to provide elastic force between and the fixing member 100. For example, the elastic member 300 may be made of a spring, but the present invention is not limited thereto, and any means capable of applying elastic force in an outward direction to the protruding member 200 can be applied. .

As shown in FIG. 2, the stud pin 10 in a state in which no external force is applied is fixed by engaging the fixing protrusion 120 of the fixing member 100 and the screw portion 230 of the protruding member 200. The protrusion 210 protrudes outward from the tread portion 11, and the elastic member 300 may be in a compressed state.

FIG. 3 is a diagram illustrating the release of fixation when the stud pin 10 shown in FIG. 2 is worn, and FIG. 4 is a diagram showing the first form of the stud pin 10 shown in FIG. 3. .

Referring to Figures 3 and 4, the stud pin 10 according to an embodiment of the present invention can further protrude the worn protruding member 200 by applying force from the outside.

The user can rotate the protruding member 200 in one direction using a means that engages the guide groove 205. At this time, when the fixing protrusion 120 and the screw portion 230 are engaged and fixed by rotating the protruding member 200 to release the fixation, the protruding member 200 is moved to the guide portion 130 by the restoring force of the elastic member 300. ) along the tread portion 11, it protrudes further in the outer direction, and can be protruded until the upper end of the threaded portion 230 of the protruding member 200 and the lower end of the threaded portion 140 of the fixing member 100 meet. there is.

The protruding member 200 can be maintained in a protruding state by a certain height by the elastic member 300, but in order to maintain the protruding member 200 more firmly, a screw portion of the protruding member 200 is added to a portion of the screw thread 140. Parts of (230) can also be combined.

FIG. 5 is a view showing the stud pin 10 of FIG. 4 in a worn state again, and FIG. 6 is a view showing the stud pin 10 of FIG. 5 in a secondary protruding form.

Referring to Figures 5 and 6, the stud pin 10 according to an embodiment of the present invention can protrude the initially protruding protruding member 200 once again.

Specifically, the screw thread 140 located on the outer peripheral surface of the upper end of the receiving groove 101 of the fixing member 100 has a shape corresponding to the screw portion 230 of the protruding member 200, and is external to the protruding member 200. By applying a force and rotating the protruding member 200, the protruding member 200 can be made to secondarily protrude further outward from the tread portion 11. At this time, the protruding member 200 may protrude further by the length of the screw thread 140.

The stud pin 10 according to the above-described embodiment may be made of a highly durable material to maintain rigidity. For example, the stud pin 10 may be made of a metal material such as aluminum or steel, or an alloy of the above materials may be used. As another embodiment, the stud pin 10 may be made of a high-strength plastic material. Additionally, the stud pin 10 may be manufactured by putting one or two or more ceramics selected from silicon oxide, silicon carbide, silicon nitride, silicon aluminum nitride, aluminum oxide, zirconium oxide, and cordierite into a mold and then sintering them.

The tire 1 according to an embodiment of the present invention may be provided with one or more stud pins 10 corresponding to an embodiment of the present invention in the tread portion 11. This tire 1 can maintain the grip force of the stud pin 10 by protruding the protruding member 200 in one or two steps depending on the degree of wear of the protruding member 200.

As described above, the stud pin 10 and the tire 1 including the stud pin 10 according to embodiments of the present invention are provided with a protruding member 200 capable of protruding in two stages, thereby forming the stud pin. It is possible to improve the grip of (10), ensure the driving stability of the car on snowy and icy roads, and extend the life of the tire (1).

As such, the present invention has been described with reference to an embodiment shown in the drawings, but this is merely an example, and those skilled in the art will understand that various modifications and variations of the embodiment are possible therefrom. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the attached patent claims.

1: tires
10: stud pin
11: Tread part
12: Side wall part
14: groove
16: Tread block
100: fixing member
101: Acceptance home
110: catching part
120: fixing protrusion
130: Guide part
140: thread
200: protruding member
205: Guide home
210: protrusion
220: pillar part
230: screw part
300: Elastic member

Claims (14)

A fixing member that is fitted and fixed into a stud fixing groove formed in the tread portion of the tire and has a receiving groove formed therein;
a protruding member received in the receiving groove of the fixing member so as to be able to protrude in two steps toward the outside of the tread portion by an external force; and
It includes an elastic member that provides elastic force between the protruding member and the fixing member,
The protruding member includes a pillar part extending outward from the tread part, and a screw part disposed at one end of the pillar part and having a screw formed on an outer peripheral surface,
The fixing member is located at the lower end of the receiving groove and has a fixing protrusion formed in a shape corresponding to the screw part of the protruding member, and is located at the upper end of the receiving groove spaced a certain distance away from the fixing protrusion and is located on the screw part of the protruding member. Comprising a screw thread formed into a corresponding shape,
A stud pin in which the length of the thread formed in the longitudinal direction of the receiving groove is longer than the length of the fixing protrusion. According to claim 1,
A stud pin in which the protruding member can protrude further by the length of the screw thread during secondary protrusion. According to claim 1,
The protruding member is disposed on the other end opposite to one end of the pillar portion, and further includes a protrusion that protrudes outward when no external force is applied. According to clause 3,
A stud pin, wherein the diameter of the protrusion is smaller than the diameter of the pillar portion. According to clause 3,
The protruding member is a stud pin in which a concave guide groove is formed in a portion of the protruding member and the pillar portion toward the inside of the protruding member. According to claim 1,
The fixing protrusion is a stud pin that fixes the protruding member in a compressed state. delete A tread portion in contact with the ground; and
Provided with one or more stud pins provided on the tread portion,
The stud pin is,
A fixing member that is fitted and fixed into a stud fixing groove formed in the tread portion of the tire and has a receiving groove formed therein;
a protruding member received in the receiving groove of the fixing member so as to be able to protrude in two steps toward the outside of the tread portion by an external force; and
A tire comprising; an elastic member providing elastic force between the protruding member and the fixing member. According to clause 8,
The protruding member includes a pillar part extending outward from the tread part, and a screw part disposed at one end of the pillar part and having a screw formed on an outer peripheral surface. According to clause 9,
The protruding member is disposed at the other end opposite to one end of the pillar portion, and further includes a protrusion that protrudes outward when no external force is applied. According to claim 10,
A tire wherein the diameter of the protrusion is smaller than the diameter of the pillar portion. According to claim 10,
The protruding member is a tire in which a concave guide groove is formed in a portion of the protruding member and the pillar portion toward the inside of the protruding member. According to clause 9,
The fixing member is located on the inner peripheral surface of the lower end of the receiving groove and includes a fixing protrusion formed in a shape corresponding to the screw portion of the protruding member,
The fixing protrusion fixes the protruding member in a compressed state of the elastic member. According to claim 13,
The fixing member is located on the outer peripheral surface of the upper end of the receiving groove spaced apart from the fixing protrusion by a predetermined distance, and includes a screw thread formed in a shape corresponding to the screw portion of the protruding member.