JP5261305B2 - In-tire electronic device fixing device - Google Patents

Description

  The present invention relates to an in-tire electronic device fixing device for fixing an electronic device mounted on a tire.

  Conventionally, an electronic device in which a sensor for measuring the internal pressure and temperature of a tire and a wireless device are integrated, and an electronic device such as an IC chip for storing management information by a tire manufacturer are fixed to the inner surface of the tire. An inner electronic device fixing apparatus is known. For example, a structure has been proposed in which a storage case in which an electronic device is stored is fixed to an inner surface of a tire using a band-shaped fixing band that rises from a pedestal provided on the inner surface of the tire (see Patent Document 1). .

  Such an in-tire electronic device fixing apparatus is widely introduced in tires mounted on dump trucks used in mines. This is because, in a dump truck that runs continuously in a mine for a long time, tire internal pressure and temperature management are extremely important.

JP-T-2007-513820 (page 5-7, FIG. 2)

  However, the conventional in-tire electronic device fixing device described above has the following problems. That is, the tire mounted on the dump truck described above has a problem that it is easily subject to large vibrations at all times, and the housing case in which the electronic device is housed easily falls off the fixing band. Further, when the tire is constantly subjected to large vibrations, there is a problem that the fixing mechanism such as the fixing band is easily damaged.

  Therefore, an object of the present invention is to provide an in-tire electronic device fixing device that can reliably prevent an electronic device from falling off or a fixing mechanism from being damaged even when the tire is subjected to a large vibration for a long time.

  In order to solve the above-described problems, the present invention has the following features. First, the first feature of the present invention is an in-tire electronic device fixing device (in-tire electronic device fixing device 100) for fixing an electronic device (electronic device 10) mounted on a tire (pneumatic tire 1). The in-tire electronic device fixing device is located on the inner surface (for example, the inner liner 3) of the tire and houses the convex pedestal portion (convex pedestal portion 40) formed of an elastic material and the electronic device. An accommodating part (accommodating part 20), an engaging part (for example, engaging part 60) for engaging the convex pedestal part and the accommodating part, and a fastening part (tightening part 90) for fastening the engaging part. The engagement portion is a first engagement portion (for example, a first engagement portion) that contacts a first side surface (for example, the first side surface 44) that is any side surface of the convex pedestal portion. 70) is different from the first side surface. A second engaging portion (for example, the second engaging portion 80) that contacts a side surface (for example, the second side surface 46), and the fastening portion includes the first engaging portion and the second engaging portion. The gist is to tighten.

  According to such an in-tire electronic device fixing device, the fastening portion fastens the first engaging portion in contact with the first side surface and the second engaging portion. Further, since the convex pedestal portion is formed of an elastic material, when the fastening portion tightens the first engagement portion and the second engagement portion, the convex pedestal portion is elastically deformed, It is tightened together with the first engagement portion and the second engagement portion. For this reason, an engaging part is firmly fixed to a convex base part in the state where play was controlled. Thereby, even when the tire receives a large vibration for a long time, the engaging portion can be prevented from falling off the convex pedestal portion, and the durability of the convex pedestal portion or the engaging portion can be improved. .

  Therefore, it is possible to provide an in-tire electronic device fixing device that can reliably prevent an electronic device from dropping off or a fixing mechanism from being damaged even when the tire receives a large vibration for a long time.

  A second feature of the present invention is related to the first feature of the present invention, wherein the convex pedestal portion is connected to a side surface of the convex pedestal portion, and faces an opposing surface (for example, the opposing surface 48). And the length (length L) of the shortest portion passing through the center of the facing surface is longer than the height (height H) of the convex pedestal portion. And

  A third feature of the present invention relates to the first or second feature of the present invention, wherein an engagement groove portion (for example, the engagement groove portion 50) is formed on a side surface of the convex pedestal portion, and the first relationship. The gist and the second engaging portion are at least engaged with the engaging groove portion.

  A fourth feature of the present invention is according to the third feature of the present invention, wherein the convex pedestal portion is connected to a side surface of the convex pedestal portion, and has a facing surface facing the accommodating portion. The gist is that the first engaging portion and the second engaging portion further engage with an engaging convex portion (for example, the engaging convex portion 52) formed between the facing surface and the engaging groove portion. To do.

  A fifth feature of the present invention relates to the fourth feature of the present invention, wherein the first engaging portion and the second engaging portion include an engaging concave portion (for example, engaging with the engaging convex portion). A concave portion 62) is formed, and the engaging convex portion becomes thinner toward the protruding end (protruding end 54) of the engaging convex portion, and the engaging concave portion is a bottom surface (for example, the bottom surface 74) of the engaging concave portion. The gist is that it gets narrower as you go to).

  A sixth feature of the present invention is according to any one of the third to fifth features of the present invention, wherein the engagement groove is formed over the entire circumference of the side surface of the convex pedestal. And

  A seventh feature of the present invention relates to any one of the first to fifth features of the present invention, wherein the convex pedestal portion is formed using the same elastic material as the inner surface of the tire. The gist.

  An eighth feature of the present invention relates to any one of the first to seventh features of the present invention, wherein the housing portion is connected to the convex pedestal portion by the fastening portion. The gist is that it is fastened together with the engaging portion.

  According to the features of the present invention, there is provided an in-tire electronic device fixing apparatus and an in-tire electronic device fixing method capable of reliably preventing an electronic device from dropping off or a fixing mechanism from being damaged even when the tire is subjected to a large vibration for a long time. Can be provided.

1 is a cross-sectional view illustrating a pneumatic tire 1 to which an in-tire electronic device fixing device 100 according to a first embodiment of the present invention is fixed. 1 is a perspective view showing an in-tire electronic device fixing device 100 according to a first embodiment of the present invention. 1 is an exploded perspective view of an in-tire electronic device fixing device 100 according to a first embodiment of the present invention. It is sectional drawing of the convex base part 40 and the engaging part 60 of the electronic device fixing device 100 in a tire which concerns on 1st Embodiment of this invention. It is a flowchart which shows the fixing method of the electronic device fixing device 100 in a tire which concerns on 1st Embodiment of this invention. It is the perspective view which decomposed | disassembled 100A of tire electronic device fixing devices which concern on 2nd Embodiment of this invention. It is the perspective view which decomposed | disassembled the tire electronic device fixing device 100B which concerns on 3rd Embodiment of this invention. It is sectional drawing of the convex base part and engaging part of the electronic device fixing device in a tire which concerns on other embodiment of this invention.

  Next, first to third embodiments and other embodiments of the in-tire electronic device fixing apparatus and the in-tire electronic device fixing method according to the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like are different from actual ones.

  Accordingly, specific dimensions and the like should be determined in consideration of the following description. Moreover, it is a matter of course that portions having different dimensional relationships and ratios are included between the drawings.

[First Embodiment]
In the present embodiment, (1) the overall configuration of the in-tire electronic device fixing device, (2) the detailed configuration of the convex pedestal portion 40, (3) the detailed configuration of the engaging portion 60, and (4) the tightening portion 90 A detailed configuration, (5) a method for fixing an electronic device in a tire, and (6) actions and effects will be described.

(1) Overall Configuration of In-Tire Electronic Device Fixing Device The overall configuration of the in-tire electronic device fixing device 100 according to the present embodiment will be described with reference to the drawings. FIG. 1 is a cross-sectional view showing a pneumatic tire 1 to which an in-tire electronic device fixing device 100 according to this embodiment is fixed. FIG. 2 is a perspective view showing the in-tire electronic device fixing device 100 according to the present embodiment. FIG. 3 is a perspective view showing an exploded view of the in-tire electronic device fixing device 100 according to the present embodiment.

  As shown in FIG. 1, the in-tire electronic device fixing device 100 is installed inside a pneumatic tire 1. Specifically, the in-tire electronic device fixing device 100 is attached to the inner liner 3 located on the inner surface of the pneumatic tire 1.

  The pneumatic tire 1 is used as a tire mounted on a dump truck used in a mine. The pneumatic tire 1 includes a pair of bead parts 2, an inner liner 3, a carcass layer 4, a belt layer 5, and a tread part 6. In addition, the gas with which the pneumatic tire 1 is filled is not limited to air, and may be, for example, an inert gas such as nitrogen gas.

  The carcass layer 4 constitutes the skeleton of the inner liner 3 and is a layer for withstanding loads and impacts and maintaining the tire structure. Specifically, the carcass layer 4 is impregnated with rubber with a cord made of a nonmetal. The cord is arranged along the radial direction (tire radial direction D). Both end portions along the tread width direction W of the carcass layer 4 are folded at the bead portion 2. The belt layer 5 is impregnated with rubber with a metal cord. The belt layer 5 is disposed between the carcass layer 4 and the tread portion 6 along the tire circumferential direction.

  As shown in FIG. 2, the in-tire electronic device fixing device 100 fixes an electronic device 10 (described later) attached to the pneumatic tire 1. Specifically, the in-tire electronic device fixing device 100 is located on the surface of the inner liner 3 of the pneumatic tire 1. As shown in FIG. 3, the in-tire electronic device fixing device 100 includes a housing portion 20, a convex pedestal portion 40, an engaging portion 60, and a tightening portion 90. The electronic device 10 is accommodated in the accommodating portion 20. The accommodating portion 20 is formed with a through hole 22 formed along a direction from the first side surface 44 of the convex pedestal portion 40 toward the second side surface 46.

  The electronic device 10 includes an electronic circuit unit, a memory, a pressure sensor, a temperature sensor, a power source, and the like that constitute a wireless communication apparatus. The pressure sensor and the temperature sensor include a sensor module that monitors the internal pressure of the air filled in the pneumatic tire 1 and the temperature inside the pneumatic tire 1. The memory stores manufacturing information of the pneumatic tire 1, for example, ID information such as a serial number. The power source may be, for example, a coin type battery or a power generation module type battery that generates power based on energy generated by vibration of the pneumatic tire 1. When the in-tire electronic device fixing apparatus 100 transmits the air pressure and temperature of the pneumatic tire 1 as a Tire Pressure Monitoring System (tire pressure monitoring system), the electronic device 10 further includes an antenna. In this case, the antenna uses a frequency band of 200 to 960 MHz. In addition, the frequency band used is changed according to a use application and a country used.

(2) Detailed Configuration of Convex Base 40 The detailed configuration of the convex base 40 will be further described with reference to FIGS. FIG. 4 is a cross-sectional view of the convex pedestal portion 40 and the engaging portion 60 of the in-tire electronic device fixing device 100 according to the embodiment of the present invention.

  The convex pedestal portion 40 constitutes a convex pedestal portion, is located on the inner surface of the tire, and is formed of an elastic material. Specifically, the convex pedestal portion 40 protrudes from the inner liner 3 that is the inner surface of the tire, and is fixed to the surface of the inner liner 3 with an adhesive, a crosslinking agent, or the like. The convex pedestal portion 40 is formed using the same elastic material as the inner liner 3 of the pneumatic tire 1. The elastic modulus of the convex pedestal portion 40 is preferably in the range of 0.5 to 3.0 times the elastic modulus of the inner liner 3. For example, the elastic material of the convex pedestal 40 includes ethylene propylene diene monomer rubber (EPDM), butyl rubber, natural rubber, a mixture of neoprene rubber and natural rubber, a mixture of chlorobutyl rubber and natural rubber, styrene butane diene rubber (SBR). And natural rubber mixtures are used. In particular, it is preferable to use a mixture of chlorobutyl rubber and natural rubber, a mixture of styrene butanediene rubber (SBR) and natural rubber as the elastic material of the convex pedestal 40.

  The convex pedestal portion 40 includes a side surface 42 and a facing surface 48. The convex pedestal portion 40 has a thin plate shape that gradually increases in area as the rectangular facing surface 48 moves toward the surface of the inner liner 3. Specifically, the side surface 42 of the convex pedestal portion 40 includes a first side surface 44 and a second side surface 46 of the longitudinal side surface portion. The width of the facing surface 48 is preferably formed to be about 0.5 mm larger than the engaging portion 60 that contacts the facing surface 48.

  Further, the side surface 42 is formed with an engagement groove portion 50 and an engagement convex portion 52. The engaging groove portion 50 is formed over the entire circumference of the side surface 42 of the convex pedestal portion 40. The engaging convex portion 52 is formed over the entire circumference of the side surface 42 of the convex pedestal portion 40. The engagement convex portion 52 is formed between the facing surface 48 and the engagement groove portion 50. The engaging convex part 52 becomes thinner as it goes to the protruding end 54 of the engaging convex part 52.

  The facing surface 48 faces the housing portion 20 that houses the electronic device 10. The facing surface 48 continues to the side surface 42 of the convex pedestal 40. Specifically, the facing surface 48 is continuous with the first side surface 44 and the second side surface 46. The facing surface 48 is located substantially parallel to the surface of the inner liner 3. The area of the facing surface 48 is set to 50% or more with respect to the outer shape area of the engaging portion 60. The area of the outer shape of the engaging portion 60 is the engagement portion 60 in the projection view of the engaging portion 60 when the engaging portion 60 is viewed from an arbitrary point on a line passing through the center of the opposing surface 48. It means the area of the shape formed by the outline line.

  The length L of the shortest portion passing through the center of the opposing surface 48 of the convex pedestal portion 40 is longer than the height H of the convex pedestal portion 40.

(3) Detailed Configuration of Engaging Unit 60 The detailed configuration of the engaging unit 60 will be further described with reference to FIG. The engaging part 60 is located closer to the inner liner 3 of the pneumatic tire 1 than the accommodating part 20 that accommodates the electronic device 10, and engages the convex pedestal part 40 and the accommodating part 20. The engaging portion 60 is formed in an annular shape that covers the entire circumference of the side surface 42 of the convex pedestal portion 40. The engaging portion 60 is formed with an engaging concave portion 62 that constitutes an engaging concave portion that engages with the engaging convex portion 52 of the convex pedestal portion 40. Specifically, the engaging part 60 includes a first engaging part 70 and a second engaging part 80.

  The first engaging portion 70 contacts the first side surface 44 that is any side surface 42 of the convex pedestal portion 40. The first engaging part 70 is in contact with the first side face 44 by engaging with at least the engaging groove part 50. The first engaging part 70 engages with the engaging convex part 52. Specifically, a first engagement recess 72 is formed in the first engagement portion 70. That is, the first engagement recess 72 is engaged with the engagement protrusion 52. Specifically, the first engagement recess 72 is engaged with the engagement protrusion 52 from both sides of the inner liner 3 side which is the inner surface side of the pneumatic tire 1 and the surface on the storage unit 20 side. The convex portion 52 is sandwiched. The first engaging recess 72 is formed over the entire inner surface of the first engaging portion 70. The first engagement recess 72 becomes narrower as it goes to the bottom surface 74 of the first engagement recess 72. The first engagement portion 70 is formed with a through hole 74 and a through hole 76 that are formed along the direction from the first side surface 44 to the second side surface 46 of the convex pedestal portion 40.

  The second engaging portion 80 contacts the second side surface 46 different from the first side surface 44 in the convex pedestal portion 40. Specifically, the second engagement portion 80 contacts the second side surface 46 that is the side surface opposite to the first side surface 44 in the convex pedestal portion 40. The second engaging portion 80 is in contact with the second side surface 46 by engaging with at least the engaging groove portion 50. The second engaging portion 80 engages with the engaging convex portion 52 in the same manner as the first engaging portion 70. Specifically, a second engagement recess 82 is formed in the second engagement portion 80. That is, the second engagement recess 82 engages with the engagement protrusion 52. The second engaging recess 82 is formed over the entire inner surface of the second engaging portion 80. The second engagement recess 82 becomes narrower as it goes to the bottom surface 84 of the second engagement recess 82. The second engagement portion 80 is formed with a through hole 84 and a through hole 86 that are formed along the direction from the first side surface 44 to the second side surface 46 of the convex pedestal portion 40. The through hole 84 is linearly aligned with the through hole 74 of the first engagement portion 70. Further, the through hole 86 is linearly aligned with the through hole 76 of the first engaging portion 70 and the through hole 22 of the housing portion 20.

(4) Detailed configuration of the tightening portion 90 The detailed configuration of the tightening portion 90 will be further described with reference to FIG. The tightening portion 90 tightens the first engaging portion 70 and the second engaging portion 80. Specifically, the fastening portion 90 fastens the accommodating portion 20 together with the engaging portion 60. Specifically, the tightening portion 90 tightens the first engaging portion 70 from the first side surface 44 toward the second side surface 46. The tightening portion 90 tightens the second engaging portion 80 from the second side surface 46 toward the first side surface 44. Furthermore, the accommodating portion 20 is fastened together with the first engaging portion 70 and the second engaging portion 80 to the convex pedestal portion 40 by the fastening portion 90.

  Specifically, the tightening portion 90 includes a first bolt 92, a first nut 94, a second bolt 96, and a second nut 98. The first bolt 92 passes through the through hole 84 and the through hole 74. Further, the first nut 94 fastens the first bolt 92 that passes through the through hole 84 and the through hole 74. The second bolt 96 passes through the through hole 86, the through hole 22, and the through hole 76. The second nut 98 tightens the second bolt 96 that passes through the through hole 86, the through hole 22, and the through hole 76.

(5) In-tire electronic device fixing method The in-tire electronic device fixing method will be further described with reference to FIGS. 3 and 5. FIG. 5 is a flowchart showing a fixing method of the in-tire electronic device fixing apparatus 100 according to the first embodiment of the present invention. The fixing method of the in-tire electronic device fixing apparatus 100 is an in-tire electronic device fixing method for fixing the electronic device 10 to the pneumatic tire 1, and includes (5.1) an engagement step and (5.2) a fastening step. Including at least.

(5.1) Engagement process In the engagement process of step S1, the first side surface 44, which is one of the side surfaces of the convex pedestal portion 40 that protrudes from the inner surface of the pneumatic tire 1 and is formed of an elastic material, is provided. The first engaging portion 70 and the second engaging portion 80 are engaged with the second side surface 46, respectively. Specifically, the first engagement concave portion 72 of the first engagement portion 70 is fitted into the engagement groove portion 50 and the engagement convex portion 52 of the first side surface 44. Further, the second engaging recess 82 of the second engaging portion 80 is fitted into the engaging groove portion 50 and the engaging convex portion 52 of the second side surface 46.

(5.2) Fastening Step In the fastening step of Step S2, the first engagement portion 70 is tightened from the first side surface 44 toward the second side surface 46, and the second engagement portion 80 is tightened from the second side surface 46 to the first. Tighten toward side 44.

  Specifically, the first bolt 92 is passed from the second side surface 46 toward the first side surface 44 through the through hole 84 of the second engagement portion 80 and the through hole 74 of the first engagement portion 70. Next, the first bolt 92 passing through the through hole 84 and the through hole 74 is tightened with the first nut 94 on the first side face 44 side. At this time, it is preferable to tighten the convex pedestal portion 40 so as to be elastically deformed.

  Further, the through hole 86 of the second engaging portion 80, the through hole 22 of the accommodating portion 20, and the through hole 76 of the first engaging portion 70, the second side 46 toward the first side 44, Pass 2 bolts 96. Next, the second bolt 96 passing through the through hole 86, the through hole 22, and the through hole 76 is tightened with the second nut 98 on the first side face 44 side. At this time, it is preferable to tighten the convex pedestal portion 40 so as to be elastically deformed. Thereby, the first engaging portion 70 and the second engaging portion 80 are tightened together with the housing portion 20, and the electronic device 10 is fixed to the pneumatic tire 1.

(6) Action / Effect According to the in-tire electronic device fixing apparatus 100, the tightening portion 90 is in contact with the first engagement portion 70 in contact with the first side surface 44 and in contact with the second side surface 46. The second engaging portion 80 is tightened together with the accommodating portion 20. Furthermore, since the convex pedestal portion 40 is formed of an elastic material, when the tightening portion 90 tightens the first engagement portion 70 and the second engagement portion 80, the convex pedestal portion 40 is elastic. In a deformed state, the first and second engaging portions 70 and 80 are tightened together. For this reason, the engaging part 60 is firmly fixed to the convex pedestal part 40 in a state where play is suppressed. Thereby, even when the pneumatic tire 1 receives a large vibration for a long time, the engaging portion 60 can be prevented from falling off the convex pedestal portion 40, and the convex pedestal portion 40 or the engaging portion can be prevented. The durability of 60 can be improved.

  Therefore, even when the tire receives a large vibration for a long time, the in-tire electronic device fixing device 100 that can reliably prevent the electronic device 10 from dropping and the fixing mechanism from being damaged can be provided.

  In the present embodiment, the length L of the shortest portion that passes through the center of the opposed surface 48 of the convex pedestal 40 is longer than the height H. For this reason, the rigidity of the convex base part 40 which supports the accommodating part 20 can further be improved. Further, since the height H is shorter than the length L, the centrifugal force generated in the engaging portion 60 and the accommodating portion 20 and the load applied to the convex pedestal portion 40 due to the vibration of the engaging portion 60 and the accommodating portion 20 are reduced. it can. Therefore, the durability of the convex pedestal 40 can be further improved.

  In the present embodiment, the engagement groove portion 50 is formed on the side surface 42 of the convex pedestal portion 40, and the first engagement portion 70 and the second engagement portion 80 are engaged with at least the engagement groove portion 50. For this reason, it can reduce that the 1st engaging part 70 and the 2nd engaging part 80 slip along the direction where the convex base part 40 protrudes. Therefore, it is possible to prevent the electronic device 10 from falling off more reliably.

  Further, the first engaging portion 70 and the second engaging portion 80 are further engaged with an engaging convex portion 52 formed between the facing surface 48 and the engaging groove portion 50. For this reason, on the side surface 42, the surface with which the first engaging portion 70 and the second engaging portion 80 abut is formed into a concavo-convex shape by the engaging groove portion 50 and the engaging convex portion 52. Therefore, it can further reduce that the 1st engaging part 70 and the 2nd engaging part 80 slip along the direction where the convex base part 40 protrudes.

  In the present embodiment, the engaging convex portion 52 becomes thinner as going to the protruding end 54 of the engaging convex portion 52, and the concave portion 62 that engages with the engaging convex portion 52 goes toward the bottom surface 74 of the concave portion 62. Narrow. For this reason, when attaching the 1st engaging part 70 and the 2nd engaging part 80 to the convex base part 40, the recessed part 62 can be easily attached to the engaging convex part 52. FIG. Further, as the first engaging portion 70 and the second engaging portion 80 are tightened, the gap between the concave portion 62 and the engaging convex portion 52 is gradually narrowed. The joint portion 80 can be firmly fastened to the convex pedestal portion 40.

  In the present embodiment, since the engaging groove portion 50 is formed over the entire circumference of the side surface 42 of the convex pedestal portion 40, the first engaging portion 70 and the second engaging portion 80 are more strongly convex. The base 40 can be fastened.

  In the present embodiment, the convex pedestal portion 40 is formed using the same elastic material as the inner liner 3 of the pneumatic tire 1. For this reason, it can suppress that stress concentrates on the boundary between the convex base part 40 and the inner liner 3. Therefore, the durability of the convex pedestal 40 can be further improved.

  In the present embodiment, the accommodating portion 20 is fastened together with the first engaging portion 70 and the second engaging portion 80 to the convex pedestal portion 40 by the fastening portion 90. For this reason, the accommodating part 20, the 1st engaging part 70, and the 2nd engaging part rather than the case where the accommodating part 20, the 1st engaging part 70, and the 2nd engaging part 80 are fastened separately. The play between 80 and the convex base part 40 can be suppressed. Therefore, the durability of the convex pedestal portion 40 or the engaging portion 60 can be further improved.

  In the present embodiment, the length of each side of the facing surface 48 is formed to be about 0.5 mm longer than the length of each portion of the engaging portion 60 that contacts the facing surface 48. For this reason, by tightening the engaging portion 60 with the tightening portion 90, the convex pedestal portion 40 can be engaged with no gap. As a result, the in-tire electronic device fixing device 100 can be reliably prevented from falling off.

[Second Embodiment]
The overall configuration of the in-tire electronic device fixing device 100A according to the present embodiment will be described with reference to FIG. FIG. 6 is a perspective view showing an exploded view of the in-tire electronic device fixing device 100A according to the present embodiment. In the following second and third embodiments, differences from the other embodiments will be mainly described, and overlapping descriptions will be omitted.

  In the first embodiment described above, the surface of the inner liner 3 of the first engagement portion 70 and the second engagement portion 80 after the first engagement portion 70 and the second engagement portion 80 are engaged with the side surface 42, respectively. The first bolt 92 is passed through the through hole 84 of the second engagement portion 80 and the through hole 74 of the first engagement portion 70 by finely adjusting the distance from the first engagement portion 80.

  On the other hand, in 2nd Embodiment, the hinge 110 is provided in the side surface in any one of the 1st engaging part 70, and the side surface of the 2nd engaging part 80 which faces the same direction as the said side surface. Specifically, the shaft portion 112 of the hinge 110 is provided between the first engagement portion 70 and the second engagement portion 80. The shaft portion 112 extends along the vertical direction from the surface of the inner liner 3.

  In the present embodiment, the hinge 110 is provided on any one side surface of the first engagement portion 70 and the side surface of the second engagement portion 80 facing the same direction as the side surface. For this reason, when the 1st engaging part 70 and the 2nd engaging part 80 are each engaged with the side surface 42, the distance from the surface of the inner liner 3 of the 1st engaging part 70 and the 2nd engaging part 80 is set. The first engagement portion 70 and the second engagement portion 80 can be aligned without fine adjustment. That is, the workability when tightening the first engaging portion 70 and the second engaging portion 80 can be improved. Further, in order to fasten the first engaging portion 70 and the second engaging portion 80 by the second bolt 96 and the second nut 98, the first bolt 92 and the first bolt 96 are fastened at two locations. Workability can be made more efficient than in the embodiment.

[Third Embodiment]
The overall configuration of the in-tire electronic device fixing device 100B according to the present embodiment will be described with reference to FIG. FIG. 7 is a perspective view showing an exploded view of the in-tire electronic device fixing device 100B according to the present embodiment.

  In the first embodiment described above, the facing surface 48 of the convex pedestal portion 40 is formed in a rectangular shape. On the other hand, in 3rd Embodiment, the opposing surface 48B of the convex base part 40B is formed in the trapezoid shape whose upper side is shorter than a base. Specifically, the side surface 42B of the convex pedestal portion 40B includes a first side surface 44B, a second side surface 46B, and a third side surface 47B. The first side surface 44B and the second side surface 46B are continuous with the oblique side of the facing surface 48B. The third side surface 47B continues to the upper side of the facing surface 48B.

  The engaging portion 60B covers a part of the side surface 42B of the convex pedestal portion 40B. Specifically, the engaging portion 60B covers the first side surface 44B, the second side surface 46B, and the third side surface 47B. That is, the engaging portion 60B has a V-shape that is a shape that covers the side excluding the bottom side of the trapezoid with respect to the opposing surface 48B that is a trapezoid whose upper side is shorter than the bottom side. As for the engaging part 60B, the 1st engaging part 70B and the 2nd engaging part 80B are integrally formed.

  In the present embodiment, the engaging portion 60B has a shape that covers the side of the opposing surface 48B excluding the bottom of the trapezoid. For this reason, it can attach, sliding the engaging part 60B from the 3rd side surface 47B side. Further, since the first engaging portion 70B and the second engaging portion 80B are integrally formed, the engaging portion 60B further tightens the engaging portion 60B and the convex pedestal portion 40B more firmly. Can do. Further, it is not necessary to adjust the positions of the first engaging portion 70B and the second engaging portion 80B, and the workability can be improved.

[Other Embodiments]
Although the contents of the present invention have been disclosed through the embodiments of the present invention as described above, it should not be understood that the descriptions and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments, examples and operational techniques will be apparent to those skilled in the art.

  For example, the embodiment of the present invention can be modified as follows. In the embodiment described above, the facing surface 48 of the convex pedestal 40 is formed in a rectangular shape, but is not limited thereto, and may be formed in a circular shape, for example.

  In the above-described embodiment, the engagement groove portion 50 and the engagement protrusion portion 52 are formed on the side surface 42 of the convex pedestal portion 40, but not limited thereto, the side surface 42 of the convex pedestal portion 40 is The engagement groove portion 50 and the engagement convex portion 52 may not be formed, that is, may be planar. Further, the side surface 42 may be formed with a plurality of engaging groove portions 50 and a plurality of engaging convex portions 52. In this case, since the plurality of recesses 62 are also formed in the first engagement portion 70 and the second engagement portion 80, the first engagement portion 70 and the second engagement portion 80 are more strongly convex. The base 40 can be fastened.

  In the embodiment described above, the engaging convex portion 52 becomes thinner as it goes to the protruding end 54 of the engaging convex portion 52, but this is not limiting, and as shown in FIG. The thickness may be the same as it goes to the tip 54.

  Further, in the above-described embodiment, the first engagement recess 72 is the engagement protrusion 52, the inner liner 3 side surface which is the inner surface side of the pneumatic tire 1, and both surfaces of the storage portion 20 side surface. However, the present invention is not limited to this, and as shown in FIG. 8A, at least the first engagement recess 72C and the second engagement recess 82C are engaged with the engagement protrusion 52C. Just do it. Further, as shown in FIG. 8B, the first engagement recess 72D and the second engagement recess 82D may be engaged with at least the engagement protrusion 52D.

  In the above-described embodiment, the engaging portion 60 includes two attachment portions, specifically, the first engaging portion 70 and the second engaging portion 80. However, the embodiment is not limited to this. You may be comprised by the attaching part. However, it is necessary to consider that as the number of attachment portions increases, the possibility of play between attachment portions increases.

  In the embodiment described above, the first engagement portion 70 and the second engagement portion 80 are tightened by two bolts, specifically, the first bolt 92 and the second bolt 96, but the present invention is not limited thereto. For example, it may be tightened by one bolt or three or more bolts. The method of tightening is not limited to bolts and nuts, and the first engagement portion 70 and the second engagement portion 80 may be sandwiched between springs or the like.

  In the embodiment described above, the first engagement portion 70 and the second engagement portion 80 are tightened by two bolts, specifically, the first bolt 92 and the second bolt 96, but the present invention is not limited thereto. For example, it may be tightened by one bolt or three or more bolts. The method of tightening is not limited to bolts and nuts, and the first engagement portion 70 and the second engagement portion 80 may be sandwiched between springs or the like.

  As described above, the present invention naturally includes various embodiments that are not described herein. Therefore, the technical scope of the present invention is defined only by the invention specifying matters according to the scope of claims reasonable from the above description.

D ... tire radial direction, W ... tread width direction, 1 ... pneumatic tire, 2 ... bead part, 3 ... inner liner, 4 ... carcass layer, 5 ... belt layer, 6 ... tread part, 10 ... electronic device, 20 ... Accommodating part, 22 ... through hole, 40, 40B ... convex base part, 42, 42B ... side face, 44, 44B ... first side face, 46, 46B ... second side face, 47B ... third side face, 48, 48B ... opposed 50, engaging groove, 52 ... engaging convex, 54 ... projecting end, 60, 60B ... engaging portion, 62 ... engaging concave portion, 70, 70B ... first engaging portion, 72 ... first engaging concave portion , 74 ... bottom surface, 74, 76 ... through hole, 80, 80B ... second engaging portion, 82 ... second engaging recess, 84 ... bottom surface, 84, 86 ... through hole, 90 ... tightening portion, 92 ... first 1 bolt, 94 ... first nut, 96 ... second bolt, 98 ... second nut, 100, 100A, 1 0B ... tire an electronic device fixing system, 110 ... hinges, 112 ... shank

Claims (8)

An in-tire electronic device fixing device for fixing an electronic device mounted on a tire,
The in-tire electronic device fixing device is located on the inner surface of the tire, and a convex pedestal portion formed of an elastic material,
A housing for housing the electronic device;
An engaging portion for engaging the convex pedestal portion and the accommodating portion;
A fastening part for fastening the engaging part;
With
The engaging portion is
A first engaging portion that comes into contact with a first side surface that is any side surface of the convex pedestal portion;
A second engaging portion that contacts a second side different from the first side;
The fastening portion is
An in-tire electronic device fixing device for tightening the first engaging portion and the second engaging portion. The convex pedestal portion is connected to a side surface of the convex pedestal portion, and has a facing surface facing the accommodating portion,
2. The in-tire electronic device fixing device according to claim 1, wherein a length of a shortest portion passing through a center of the facing surface in the facing surface is longer than a height of the convex pedestal portion. An engagement groove is formed on the side surface of the convex pedestal,
The in-tire electronic device fixing device according to claim 1 or 2, wherein the first engaging portion and the second engaging portion are engaged with at least the engaging groove portion. The convex pedestal portion is connected to a side surface of the convex pedestal portion, and has a facing surface facing the accommodating portion,
The in-tire electronic device fixing according to claim 3, wherein the first engagement portion and the second engagement portion further engage with an engagement convex portion formed between the facing surface and the engagement groove portion. apparatus. The first engaging portion and the second engaging portion are formed with engaging concave portions that engage with the engaging convex portions,
The engaging convex part becomes thinner as it goes to the tip of the engaging convex part,
The in-tire electronic device fixing device according to claim 4, wherein the engagement recess becomes narrower toward a bottom surface of the engagement recess.   The in-tire electronic device fixing device according to any one of claims 3 to 5, wherein the engagement groove portion is formed over an entire circumference of a side surface of the convex pedestal portion.   The in-tire electronic device fixing device according to any one of claims 1 to 5, wherein the convex pedestal portion is formed using the same elastic material as an inner surface of the tire.   The in-tire electronic device according to any one of claims 1 to 7, wherein the housing portion is fastened together with the first engagement portion and the second engagement portion to the convex pedestal portion by the fastening portion. Fixing device.

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