TWI530675B - Tire resistance measuring device - Google Patents

Description

Tire resistance measuring device

The present invention relates to a resistance measuring device for a tire.

In general, a vehicle such as an automobile is designed such that when the vehicle body is charged, the electric charge is released to the ground through the tire. Then, in order to stably discharge the electric charge to the ground, a step of inspecting the electric resistance between the inner peripheral portion and the outer peripheral portion of the tire is performed during the period from the end of the step of vulcanization molding of the tire or the like to the time of shipment. In this inspection step, the deviation of the contact resistance of the measuring member and the ground contact portion of the tire may cause a deviation in the resistance measurement value. Therefore, a technique for improving the shape, the number, and the like of the measuring member to stably contact the tire and the measuring member has been proposed (for example, refer to Patent Documents 1, 2).

[Patent Document 1] Japanese Laid-Open Patent Publication No. 2006-317380

[Patent Document 2] Japanese Patent No. 4150108

In order to improve the rolling resistance, the contact portion of the tire or the like is mixed with a material having a high electric resistance such as ruthenium dioxide. When the resistance of the ground contact portion is increased as described above, it becomes difficult for the electric charge generated by the vehicle to charge the tire and release it to the ground. Therefore, a low-resistance material is locally disposed between the shoulder portion and the center portion of the ground contact portion that is in contact with the ground, and the electric charge is easily discharged to the ground. The low-resistance material is generally formed in a ring shape throughout the entire circumference of the touch portion of the tire.

However, the low-resistance material of the tire described above is often different in size, size, and the like depending on the size, shape, and the like. In addition, the low-resistance material of the tire described above may be undetectable by visual observation. Therefore, in order to automate the inspection of the electric resistance of the tire, it is necessary to perform an adjustment step of confirming the position of the low-resistance material in the ground contact portion of the tire to be inspected, and changing the position, angle, and the like of the measuring member on the outer peripheral side. Therefore, the burden on the operator is increased.

The present invention is to provide a tire resistance measuring device which can stably measure resistance without adjusting a measuring member for a tire of different specifications.

A tire resistance measuring apparatus according to a first aspect of the present invention is a tire resistance measuring apparatus for measuring an electric resistance of an inner peripheral portion to an outer peripheral portion of a tire, which is provided with a measurement capable of bending and deforming in accordance with the shape of the tire. Pieces.

A tire resistance measuring device according to a second aspect of the present invention The measuring member of the electric resistance measuring device for a tire according to the first aspect of the present invention may include: an inner peripheral side measuring member that is disposed on an inner peripheral side of the tire and that is in contact with the inner peripheral portion, and is disposed outside the tire The side peripheral side measuring member can be contacted with the outer peripheral portion. Further, the outer peripheral side measuring piece is bent and deformed in the width direction of the tire so as to be similar to the tire shape from the central portion of the outer peripheral portion to the shoulder portion.

According to a third aspect of the present invention, in the electric resistance measuring apparatus for a tire according to the third aspect of the present invention, the outer peripheral side measuring member of the electric resistance measuring device for a tire according to the first or second aspect may be disposed such that an upper portion thereof is closer to the tire than the lower portion. a linear conductor on the radially outer side.

According to a fourth aspect of the present invention, in the electric resistance measuring apparatus for a tire according to the fourth aspect of the present invention, the outer peripheral side measuring member is elastically deformable, and is in contact with the outer periphery in an elastically deformed state. unit.

According to a fifth aspect of the present invention, in the electric resistance measuring apparatus for a tire according to the second aspect of the present invention, the electric resistance measuring device for a tire according to any one of the second to fourth aspect of the present invention includes the two outer peripheral side measuring members and one of the inner portions Week side measurement piece.

According to a sixth aspect of the present invention, in the electric resistance measuring apparatus for a tire according to any one of the second to fifth aspect of the present invention, there is provided a measuring device interval adjusting mechanism, the measuring member interval adjusting mechanism The distance between the outer peripheral side measuring piece and the inner peripheral side measuring piece can be displaced in a floating state.

The electric resistance measuring device of the tire according to the seventh aspect of the present invention In the electric resistance measuring device for a tire according to any one of the second to sixth aspects, the shifting mechanism may be configured such that the outer peripheral side measuring member and the inner peripheral side measuring member are opposite to each other The tire is displaced in the approaching and exiting directions.

According to the above-described tire resistance measuring device, it is possible to stably measure the resistance of the tire to be measured of different specifications without adjusting the measuring member.

5a‧‧‧External side measuring piece (measuring piece)

5b‧‧‧ inner circumference side measuring piece (measuring piece)

6‧‧‧Deterum unit (measuring device interval adjustment mechanism)

12‧‧‧ Lifting mechanism (shifting mechanism)

70‧‧‧Touching Department (outer part)

71‧‧‧The lip part (inner part)

C‧‧‧Central Department (Central Department)

S‧‧‧Shoulder

T‧‧‧ tires

Fig. 1 is a front elevational view showing a resistance measuring device for a tire according to an embodiment of the present invention.

Fig. 2 is a partial cross-sectional view showing a main part of the above resistance measuring device.

3 is a plan view showing the arrangement of the outer peripheral side measuring instrument and the inner peripheral side measuring member of the electric resistance measuring device.

4A is a front view of the outer peripheral side measuring material according to the first modification of the embodiment of the present invention, and shows a state in which the outer peripheral side measuring member is pressed against the tire.

4B is a front view of the outer peripheral side measuring material according to the first modification of the embodiment of the present invention, and shows a state in which the outer peripheral side measuring member is pressed against the tire.

Fig. 5 is a plan view showing a peripheral side measuring member according to a second modification of the embodiment of the present invention.

Fig. 6A is a front view corresponding to Fig. 4A according to a third modification of the embodiment of the present invention, and shows a state in which the outer peripheral side measuring member is pressed against the tire.

Fig. 6B is a front view corresponding to Fig. 4B according to a third modification of the embodiment of the present invention, and shows a state in which the outer peripheral side measuring member is pressed against the tire.

Fig. 7A is a front view corresponding to Fig. 4A according to a fourth modification of the embodiment of the present invention, showing a state in which the outer peripheral side measuring member is pressed against the tire.

Fig. 7B is a front view corresponding to Fig. 4B according to a fourth modification of the embodiment of the present invention, and shows a state in which the outer peripheral side measuring member is pressed against the tire.

Fig. 8A is a front view corresponding to Fig. 4A according to a fifth modification of the embodiment of the present invention, and shows a state in which the outer peripheral side measuring member is pressed against the tire.

Fig. 8B is a front view corresponding to Fig. 4B according to a fifth modification of the embodiment of the present invention, and shows a state in which the outer peripheral side measuring member is pressed against the tire.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

Fig. 1 is a structural diagram showing a schematic structure of a resistance measuring apparatus 1 of the present embodiment.

As shown in FIG. 1, the resistance measuring apparatus 1 has a roller conveyor 2 which is disposed on an inspection line (not shown) of the vulcanized tire T for carrying the tire T. The roller conveyor 2 includes a plurality of rollers 3 that are rotatable in a plurality of rows in the conveying direction, and the rollers 3 of the plurality of rows are arranged in the width direction of the roller conveyor 2 at intervals (below Referred to as the sides of the width direction. The roller conveyor 2 can convey the tire T in a state in which the side wall 4 faces the vertical direction.

The resistance measuring device 1 includes a measuring device unit (measuring device interval adjusting mechanism) 6 for measuring the electric resistance of the tire T, and the measuring device unit 6 includes an outer peripheral side measuring member 5a and an inner peripheral side measuring member 5b. The outer peripheral side measuring element 5a and the inner peripheral side measuring piece 5b of the measuring instrument unit 6 can protrude upward from between the roller conveyors 2 that are spaced apart in the width direction. For convenience of illustration, the roller 3 overlapping the measuring member unit 6 when viewed from the front is omitted in FIG.

The above roller conveyor 2 is disposed on a gantry 9, which is erected on the floor 8. The gantry 9 is provided with a plurality of leg portions 10 extending in the vertical direction. Further, the gantry 9 is provided with a cross member 11 that is installed to extend across the adjacent leg portions 10 and that extends in the horizontal direction. The beams 11 are respectively disposed at the upper and lower portions of the leg portion 10. An elevating mechanism (shift mechanism) 12 for lifting and lowering the measuring unit 6 is attached to the upper cross member 11. The elevating mechanism 12 is provided with a base portion 13 that extends in the vertical direction. The base portion 13 is fixed to the beam through a bracket (not shown) slightly above the center portion in the vertical direction. 11.

An upper support plate 14 extending in the horizontal direction is formed at the upper end of the base portion 13. Further, a lower support plate 15 opposed to the upper support plate 14 is formed at the lower end of the base portion 13. Between the upper support plate 14 and the lower support plate 15, two guide bars 16 extending in the vertical direction and being parallel are attached. These guide bars 16 are respectively disposed on both outer sides in the width direction of the base portion 13.

The guide portion 17 is detachably attached to the guide bar 16. The guide portion 17 is provided with two guide cylinders 18 through which the guide bars 16 are inserted, and a frame portion 19 for connecting the upper end portions of the guide cylinders 18 to each other. Further, a support arm 20 that extends upward is formed in the frame portion 19. The upper end of the support arm 20 is fixed to the lower surface of the above-described measuring member unit 6.

The elevating mechanism 12 includes a fluid pressure cylinder 21 that serves as a driving source for moving the measuring unit 6 up and down. The fluid pressure cylinder 21 includes a tube 22 extending in the vertical direction and an inner rod 23 extending above the outer tube 22. The outer tube 22 is fixed to the lower support plate 15, and the upper end of the inner rod 23 is fixed to the lower surface of the above-described measuring member unit 6. The fluid pressure cylinder 21 can advance and retract the inner rod 23 by a pressure difference generated by supplying a compressed fluid to the cylinder chamber (not shown) of the outer tube 22 and discharging it.

That is, by moving the inner rod 23 of the fluid pressure cylinder 21 in the compression direction, the measuring unit 6 is moved downward along the guide rod 16 through the guide portion 17. Thereby, the measuring unit 6 can be moved downward from the roller conveyor 2.

Further, by moving the inner rod 23 of the fluid pressure cylinder 21 in the direction of elongation In this position, the measuring unit 6 is moved upward along the guiding rod 16 through the guiding portion 17. Thereby, the measuring unit 6 can be moved upward, that is, in the direction approaching the roller conveyor 2.

The measuring unit 6 is provided with a bottom plate 29, and an upper end portion of the inner rod 23 is fixed to the bottom plate 29. The frame body 31 is attached to the bottom plate 29, and the frame body 31 is for supporting the guide bar 30 extending in the conveyance direction. Further, the first sliding portion 32 and the second sliding portion 33 are slidably attached to the guide bar 30 supported by the frame body 31. The measuring member fluid pressure cylinder 34 is attached to the first sliding portion 32 and the second sliding portion 33, and the measuring member fluid pressure cylinder 34 serves as a driving source for relatively moving the same. The measuring member is fixed to the first sliding portion 32 by the end of the inner rod 35 of the fluid pressure cylinder 34. Further, the end portion of the tube 36 on the inner side of the outer tube 36 of the measuring member fluid pressure cylinder 34 is fixed to the second sliding portion 33.

A substantially L-shaped first supporting metal member 42 is fixed to the first sliding portion 32. The first supporting metal member 42 includes a vertical frame 40 that extends upward and a lateral frame 41 that extends toward the second sliding portion 33 and that extends in a substantially horizontal direction. Further, on the first supporting metal member 42, two outer peripheral side measuring members 5a are attached so as to straddle between the end portion of the vertical frame 40 and the end portion of the lateral frame 41. These outer peripheral side measuring members 5a are composed of linear conductors. In this manner, the outer circumferential side measuring member 5a is disposed so as to be disposed between the end portion of the vertical frame 40 and the end portion of the lateral frame 41 so as to be inclined so that the upper portion thereof is located radially outward of the tire T from the lower portion. Further, the lateral frame 41 of the first supporting metal member 42 is disposed below the conveying surface of the roller conveyor 2. Thus, the outer peripheral side measuring piece 5a is disposed in the height direction than the tire T The side wall 4 of the lower side extends to a lower level.

As shown in Fig. 2, the two outer peripheral side measuring members 5a are arranged side by side at predetermined intervals in the circumferential direction. Further, the inner peripheral side measuring device 5b is disposed on the inner peripheral side between the two outer peripheral side measuring members 5a. Further, as shown in FIG. 3, the outer peripheral side measuring member 5a is connected to the first supporting metal member 42 through the insulating member i. That is, the outer peripheral side measuring member 5a and the first supporting metal member 42 are electrically insulated.

As shown in FIGS. 1 and 3, a second supporting metal member 47 is attached to the second sliding portion 33, and the second supporting metal member 47 is opposite to the first sliding portion 32 from the upper end portion of the second sliding portion 33. Tilt slightly below the side. The inner peripheral side measuring member 5b is extended from the upper surface of the second supporting metal member 47 in the vertical direction. The inner peripheral side measuring piece 5b is connected to the second supporting metal piece 47 through the insulating member i. That is, the inner circumference side measuring piece 5b and the second supporting metal piece 47 are electrically insulated.

When the measuring member is driven by the fluid pressure cylinder 34 in the compression direction, the first sliding portion 32 and the second sliding portion 33 are relatively displaced in the approaching direction along the guide bar 30. As a result, the outer peripheral side measuring piece 5a and the inner peripheral side measuring piece 5b are displaced in the approaching direction.

Further, when the measuring member is driven in the extending direction by the fluid pressure cylinder 34, the first sliding portion 32 and the second sliding portion 33 are relatively displaced in the direction away from each other along the guide bar 30. As a result, the outer peripheral side measuring piece 5a and the inner peripheral side measuring piece 5b are displaced in the direction away from each other.

The measuring member fluid pressure cylinder 34 is supported so that the inner rod 35 and the outer tube 36 can be displaced together along the guide rod 30 in a floating state. In other words The measuring member fluid pressure cylinder 34 can change the distance between the outer peripheral side measuring piece 5a and the inner peripheral side measuring piece 5b in a floating state. For example, in order to sandwich the outer peripheral side measuring device 5a and the inner peripheral side measuring device 5b into the tire T, the measuring member fluid pressure cylinder 34 is driven in the compression direction. In this manner, one of the outer peripheral side measuring element 5a and the inner peripheral side measuring element 5b is first brought into contact with the tire T to stop. Then, only the other side is relatively moved toward the direction in which the tire T is approached.

On the other hand, in order to separate the outer peripheral side measuring piece 5a and the inner peripheral side measuring piece 5b from the tire T, the measuring member fluid pressure cylinder 34 is driven in the extending direction. In this manner, one of the outer peripheral side measuring element 5a and the inner peripheral side measuring element 5b is first brought into contact with the frame body 31 to be stopped. Then, only the other side is moved in the direction away from the tire T.

In other words, as described above, the support structure of the fluid pressure cylinder 34 for a measuring instrument is in a floating state, and even if the conveyance position of the tire T is slightly deviated, the outer peripheral side measuring member 5a and the inner peripheral side measuring member 5b can be accurately used. Tire T is clamped in.

In addition, the ground contact portion (outer peripheral portion) 70 on the outer peripheral side of the tire T is disposed on the outer peripheral side measuring piece 5a side, and the bead portion (inner peripheral portion) 71 on the inner peripheral side of the tire T is disposed on the inner peripheral side measuring member 5b. In the side state, the measuring unit 6 is raised by the driving of the fluid pressure cylinder 21. Further, the outer peripheral side measuring device 5a and the inner peripheral side measuring device 5b are moved in the approaching direction by the driving of the measuring member fluid pressure cylinder 34, and the tire T can be sandwiched by the outer peripheral side measuring member 5a and the inner peripheral side measuring member 5b.

As shown in FIG. 3, the outer peripheral side measuring piece 5a abuts on the ground contact portion 70 on the radially outer side of the tire T. Further, the inner peripheral side measuring member 5b abuts The bead portion 71 on the radially inner side of the tire T. The outer peripheral side measuring piece 5a is formed of a coil spring B which is elastically deformable in accordance with the shape of the tire (in other words, the outer shape of the tire T) and is bendable and electrically conductive. As described above, when the tire T is pressed, the outer peripheral side measuring piece 5a can be bent in the width direction of the tire T (in other words, the axial direction) from the central portion C of the ground contact portion 70 to the tire shape of the shoulder portion S. Here, the shoulder portion S refers to a portion in the vicinity of the end portion in the width direction among the ground contact portions 70 that are in contact with the ground when the vehicle is traveling.

When the tire T is relatively close to the outer peripheral side measuring piece 5a, the outer peripheral side measuring piece 5a first comes into contact with the shoulder portion S of the tire T. As described above, the outer peripheral side measuring member 5a gradually deflects toward the side close to the first supporting metal member 42 from the abutting portion thereof as it moves relative to the tire T. Then, the abutting range of the outer peripheral side measuring device 5a is expanded to the central portion C side of the ground contacting portion 70. The outer peripheral side measuring member 5a finally abuts against the range from the central portion C to the shoulder portion S of the ground contacting portion 70 of the tire T.

The inner peripheral side measuring piece 5b is formed of a rod-shaped member having sufficient rigidity and having conductivity, and is not deformed when pressed by the bead portion 71. The inner peripheral side measuring piece 5b is disposed to be slightly inclined so that the base portion thereof is closer to the center side of the axis of the tire T than the end portion. By having the inner peripheral side measuring piece 5b having the above-described shape, when the width dimension of the tire T is shorter than the length dimension of the inner peripheral side measuring piece 5b, it is possible to avoid the side opposite to the width direction of the bead portion 71 of the measurement target. The bead portion 71 contacts the inner peripheral side measuring member 5b.

On the outer peripheral side measuring piece 5a and the inner peripheral side measuring piece 5b, The resistance measuring device (measurement unit) 60 is connected through the wires W1 and W2. In the electric resistance measuring device 60, a predetermined measurement current is passed between the outer peripheral side measuring element 5a and the inner peripheral side measuring element 5b, and the voltage between the terminals is measured, thereby measuring the outer peripheral side measuring element 5a and the inner peripheral side measuring piece 5b. Resistance between.

Therefore, according to the electric resistance measurement device 1 of the above-described embodiment, since the outer circumferential side measuring member 5a is simultaneously in contact with the central portion C of the tire T to the shoulder portion S after the bending deformation, the resistance between the central portion C and the shoulder portion S can be measured. The resistance between the smallest portion and the bead portion 71. As a result, the tire T having different specifications does not need to be adjusted by the outer peripheral side measuring piece 5a, and the outer peripheral side measuring piece 5a can be stably brought into contact with the center portion C of the tire T to the shoulder portion S to measure the electric resistance. Further, when the ground contact portion 70 in which cerium oxide or the like is mixed is used, even if a portion having a low-resistance material is partially formed at any position between the center portion C and the shoulder portion S, the portion of the low-resistance material and the tire can be measured. The resistance between the lips 71.

Further, by pressing the outer peripheral side measuring piece 5a against the tire T, the outer peripheral side measuring piece 5a can be electrically contacted from the central portion C of the tire T to the shoulder portion S in the width direction. Further, by pressing the outer peripheral side measuring piece 5a against the tire T by elasticity, excessive contact force can be prevented from acting between the outer peripheral side measuring piece 5a and the tire T.

In addition, when the tire T is sandwiched between the outer peripheral side measuring piece 5a and the inner peripheral side measuring piece 5b, the outer peripheral side measuring piece 5a can be stably contacted by the three-point support without being affected by the size, shape, and the like of the tire T. The touch portion 70 of the tire T contacts the inner peripheral side measuring member 5b with the bead portion 71 of the tire T.

In addition, the outer peripheral side measuring piece 5a and the inner peripheral side measuring piece 5b can be relatively displaced by the measuring unit 6, and when the outer peripheral side measuring piece 5a comes into contact with the tire T, the inner peripheral side measuring piece 5b can be brought closer. The manner of the outer peripheral side measuring member 5a is relatively shifted. In addition, when the inner peripheral side measuring piece 5b is in contact with the tire T, the outer peripheral side measuring piece 5a can be relatively displaced so as to be close to the inner peripheral side measuring piece 5b. Therefore, since the bead portion 71 and the ground contact portion 70 of the tire T are disposed between the outer peripheral side measuring piece 5a and the inner peripheral side measuring piece 5b, the outer peripheral side can be prevented from being affected by the position and radial dimension of the tire T. The measuring piece 5a and the inner peripheral side measuring piece 5b press the tire T with the same force.

In addition, since the elevating mechanism 12 is provided, the conveyed tire T is stopped at a predetermined measurement position, and the outer peripheral side measuring device 5a and the inner peripheral side measuring device 5b are brought close to the tire T, so that the resistance can be measured. Some equipment.

The present invention is not limited to the structures of the above-described embodiments, and design changes can be made without departing from the scope of the invention.

For example, in the above-described embodiment, the case where the coil spring B is used as the outer peripheral side measuring material 5a is described, but the tire shape from the center portion C of the ground contact portion 70 to the shoulder portion S can be imitated in the width direction of the tire T. It is sufficient to perform bending deformation, and is not limited to a coil spring. For example, as the first modification, as shown in FIG. 4A and FIG. 4B, a conductor D having a flexible linear shape may be used as the outer peripheral side measuring member 5a. In the case shown in FIG. 4A and FIG. 4B, similarly to the above-described embodiment, the tire T can be bent and deformed in accordance with the outer shape of the ground contact portion 70 by pressing the tire T against the outer peripheral side measuring member 5a. As a linear conductor D, it can be used for flexibility. Metal wires, electric wires, and yarns having conductivity at least on the surface.

Further, as a second modification, as shown in FIG. 5, a plurality of flexible conductors D may be arranged side by side in the circumferential direction of the tire T. In addition, the conductor D used for the outer peripheral side measuring material 5a is not limited to a linear shape, and may be a sheet-shaped conductor.

In addition, in the above-described embodiment, in order to make the outer peripheral side measuring material 5a elastic, an example in which the coil spring B is used will be described. However, the conductive material which is elastically deformable and has elasticity is not limited to the coil spring B. Further, for example, as shown in FIG. 6A and FIG. 6B as a third modification, an elastically deformable and elastic conductive material such as a coil spring B may be interposed in a part of the flexible conductor D.

In addition, in the embodiment and each modification, the case where the outer peripheral side measuring material 5a is entirely bendable is described, but a part thereof may be bendably deformed. Specifically, as shown in FIG. 7A, for example, as shown in FIG. 7A, a coil spring B may be provided on the side of the horizontal frame 41, and a rod-shaped conductor D1 which is not deformed by bending may be provided on the side of the vertical frame 40. As shown in FIG. 7B, the conductor D1 is abutted in the plane section in the vicinity of the center portion C of the ground contact portion 70, and the coil spring B is bent and deformed to abut against the shoulder portion S. As a result, the outer peripheral side measuring piece 5a can be elastically contacted at least in the range from the central portion C to the shoulder portion S of the ground contact portion 70. In the case of using the coil spring B on the side of the lateral frame 41 in FIGS. 7A and 7B, the linear conductor D having flexibility described above may be used instead of the coil spring B.

In addition, in the above-described embodiment and each modification, the outer peripheral side measuring material 5a is a linear, thin, and spiral conductor. Happening. However, as the fifth modification, for example, as shown in FIG. 8A and FIG. 8B, a plate-shaped conductor D2 can be used, and a plurality of plates are formed side by side at a predetermined interval in the longitudinal direction on the side opposite to the surface in contact with the tire T. A slit Sr extending in the circumferential direction of the tire T. Since the outer peripheral side measuring material 5a having the conductor D2 is bendable and deformable similarly to the outer peripheral side measuring material 5a of the above-described embodiment and each modification, it is possible to stably contact at least the center portion C of the tire T to the shoulder portion. .

In addition, in the above-described embodiment and each modification, the upper end portion of the outer peripheral side measuring piece 5a is disposed at a position slightly higher than the center portion C of the tire T in the height direction. However, the upper end portion of the outer peripheral side measuring piece 5a may be disposed at a position higher than the central portion C of the highest position among the central portions C of the tire T to be inspected.

In the above-described embodiment, the circumferential side measuring element 5a is provided in the circumferential direction in which two coil springs B are arranged in the circumferential direction. However, only one may be disposed. In addition, although it is described that only one inner peripheral side measuring material 5b is arrange|positioned, the inner peripheral side measuring material 5b may be arrange|positioned in the several in the circumferential direction.

In the above-described respective embodiments, the inner peripheral side measuring device 5b is disposed to be inclined, but it may be arranged to extend vertically upward or change the tilt angle as necessary.

In addition, in the above-described respective embodiments, the measuring unit 6 is displaced in the vertical direction by the elevating mechanism 12, but the displacement direction of the measuring unit 6 is not limited to the vertical direction, and only It is only necessary to correspond to the direction of the posture when the tire T is transported.

[Industry Utilization]

The present invention is widely applicable to a resistance measuring device for measuring a tire having electrical resistance from an inner peripheral portion to an outer peripheral portion of a tire.

5a‧‧‧External side measuring piece (measuring piece)

5b‧‧‧ inner circumference side measuring piece (measuring piece)

40‧‧‧ vertical frame

41‧‧‧ transverse frame

42‧‧‧First supporting metal parts

47‧‧‧Second supporting metal parts

60‧‧‧resistance measuring device (measurement unit)

70‧‧‧Touching Department (outer part)

71‧‧‧The lip part (inner part)

i‧‧‧Insulating components

B‧‧‧Coil Spring

C‧‧‧Central Department (Central Department)

S‧‧‧Shoulder

T‧‧‧ tires

W1, W2‧‧‧ wiring

Claims (7)

A tire resistance measuring device is a tire resistance measuring device for measuring resistance of an inner peripheral portion to an outer peripheral portion of a tire, and includes a measuring member that can be bent and deformed in accordance with the shape of the tire. The measuring device for a tire according to the first aspect of the invention, wherein the measuring device includes an inner peripheral side measuring member that is disposed on an inner peripheral side of the tire and that is in contact with the inner peripheral portion, and is disposed in the aforesaid The outer peripheral side measuring member is provided on the outer peripheral side of the tire, and the outer peripheral side measuring member is bent and deformed in the width direction of the tire from the central portion of the outer peripheral portion to the shoulder portion. The electric resistance measuring device for a tire according to the second aspect of the invention, wherein the outer peripheral side measuring member is a linear conductor that is disposed obliquely so that an upper portion thereof is located radially outward of the tire from a lower portion. The electric resistance measuring device for a tire according to the invention of claim 2, wherein the outer peripheral side measuring member is elastically deformable and is in contact with the outer peripheral portion in an elastically deformed state. The electric resistance measuring device for a tire according to the second or third aspect of the invention, wherein the two outer peripheral side measuring members and one front are provided The inner peripheral side measuring piece is described. The apparatus for measuring a resistance of a tire according to the invention of claim 2, wherein the measuring device interval adjusting mechanism is provided between the outer peripheral side measuring member and the inner peripheral side measuring member. The distance is shifted in a floating state. The electric resistance measuring device for a tire according to the second or third aspect of the invention, further comprising: a shifting mechanism that causes the outer peripheral side measuring piece and the inner peripheral side measuring piece to face the tire The approach and departure directions are shifted.