JP5735340B2 - Electronic equipment mounting device - Google Patents

Description

  The present invention relates to an electronic device mounting device for mounting tires on electronic devices such as transponders and tire internal pressure monitoring devices.

  There has been provided a technique for attaching an electronic device such as a tire pressure monitoring system (hereinafter referred to as TPMS) or the like to the inner liner side surface of the tire and monitoring the internal pressure of the tire. Such an electronic device is mounted using an electronic device mounting rubber patch that can be mounted on the tire surface (see, for example, Patent Document 1).

JP 2006-151372 A

  By the way, in recent years, an acceleration sensor is installed as an electronic device to be mounted on a tire, and high frequency vibration generated by friction between the tire and a road surface during traveling is measured, and the measured value is analyzed to estimate a road surface state of the road surface. Has been done. When measuring such high-frequency vibrations, it is necessary to support the sensor so that the sensor interlocks with the tire inner surface by relatively firmly tightening the electronic device having the acceleration sensor. However, when an electronic device is fixed with a rubber patch, a sufficient tightening force cannot be obtained depending on the material of the rubber. In this case, there is a difference between the movement of the tire inner surface and the movement of the sensor, and there is a possibility that measurement cannot be performed with desired accuracy.

  It is also conceivable to increase the bonding by increasing the thickness of the rubber. However, when the thickness of the rubber is increased, the vibration transmitted to the electronic device is attenuated, and there is a possibility that the measured value cannot be obtained with high accuracy. Further, when the thickness of the rubber patch is increased, the weight of the rubber patch increases, and the balance of the tire may be deteriorated.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an electronic device mounting apparatus that can increase the adhesive force of the electronic device to the tire surface while maintaining the balance of the tire.

  An electronic device mounting device (electronic device mounting device 10) according to the present invention is an electronic device mounting device for mounting an electronic device (electronic device 7) on an inner liner (inner liner 4) side of a tire (tire 1). The first attachment member (first attachment member 11) attached directly or indirectly to the surface of the inner liner, and the second attachment member (first attachment member) on which the electronic device is mounted and fitted with the first attachment member 2) an attachment member 15), and the first attachment member is an elastomer pedestal portion (base portion 12) having a fixed surface that is directly or indirectly attached to the surface of the inner liner, A C-shaped ring portion (ring portion 13) formed on an opposite surface side of the pedestal portion facing the fixed surface and projecting inward from the pedestal portion on the opposite surface; The second mounting member includes a cylindrical support portion (support portion 16) having a support surface for supporting the electronic device, and a storage portion (storage) formed on the outer peripheral surface of the support portion and into which the ring portion is inserted. Part 17) and a guide part (guide part 18) for guiding the ring part to the storage part, and the ring part is guided to the storage part along the guide part. The attachment member and the second attachment member are fitted to each other.

  According to the electronic device mounting apparatus according to the present invention, the electronic device can be mounted on the tire via the electronic device mounting apparatus by fitting the first mounting member and the second mounting member. , And the deviation of the movement of the inner surface of the tire and the movement of the sensor can be suppressed, and the measurement can be obtained with a desired accuracy. In addition, since a desired strength can be obtained without increasing the rubber thickness like a rubber patch, deterioration of the balance of the tire can be suppressed.

It is sectional drawing orthogonal to the tire peripheral direction of the tire with which the electronic device attachment apparatus which concerns on this Embodiment was mounted | worn, and along the tire width direction. It is sectional drawing of the electronic device attachment apparatus and electronic device which are shown in FIG. It is a top view of the 1st attachment member of an electronic equipment attachment device. It is a perspective view of the ring part of the 1st attachment member. It is a front view of the 2nd attachment member of an electronic equipment attachment device. It is a figure for demonstrating the attachment aspect to the tire of the electronic device using an electronic device attachment apparatus.

  Next, the electronic device mounting apparatus according to the present embodiment will be described with reference to the drawings. Specifically, (1) overall schematic configuration of tire, (2) configuration of electronic device mounting apparatus, (3) mounting mode of electronic device, (4) action and effect, and (5) other embodiments will be described. To do.

  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.

(1) Overall Schematic Configuration of Tire FIG. 1 is a cross-sectional view of a tire to which an electronic device mounting apparatus 10 is mounted. The tire includes a tread portion 5 that is in contact with the road surface, and a tire side portion 8 that extends inward in the tire radial direction from an end portion of the tread portion 5 in the tire width direction twd. The tread portion 5 is a portion that comes into contact with the road surface when a normal load and a normal internal pressure defined by a predetermined organization such as the Japan Automobile Tire Association (JATMA) are set for the vulcanized tire. The tire side portion 8 is arranged to extend inward in the tire radial direction from both side portions of the tread portion 5 in the tire width direction twd. The tire 1 has a pair of bead portions 2. The tire side portion 8 extends from both side portions of the tread portion 5 to the outside in the tire radial direction of the bead portion 2. An electronic device 7 is attached to the inner liner 4 via an electronic device mounting device 10.

  The bead portion 2 is in contact with the rim 9 inside the tire radial direction trd. The carcass layer 3 includes a main body ply 3 a disposed between the pair of bead portions 2, and a folded ply 3 b folded back toward the outer side in the tire radial direction at the bead portion 2. An inner liner 4 is provided inside the carcass layer 3.

  A tread portion 5 that is in contact with the road surface is disposed outside the carcass layer 3 in the tire radial direction. Between the tread portion 5 and the carcass layer 3, a belt layer 6 that reinforces the tread portion 5 is provided. The belt layer 6 is made of high-strength organic fiber, and a plurality of belt layers 6 are stacked along the tire circumferential direction. An electronic device 7 that detects internal information of the tire is provided on the inner side of the inner liner 4 in the bead portion 2 in the tire width direction twd. The electronic device 7 is fixed to the tire inner surface (the inner surface of the inner liner 4) via the electronic device mounting device 10.

  The electronic device 7 may be a device that detects the air pressure of the compressed air filled in the tire, the temperature inside the tire, the wear state of the tire, and the like, and transmits the detected information to the communication device. It may be equipped with an acceleration sensor, may store identification information such as tire ID, and may transmit identification information in response to a request from a communication device outside the tire. This includes electronic equipment for the purpose of. Therefore, the electronic device may include a detection unit that detects tire internal information such as tire internal pressure, or may include a storage unit that holds tire identification information. The tire internal information detected by the detecting unit includes identification information such as tire air pressure, tire temperature, tire rotation, tire ID, and the like.

(2) Configuration of Electronic Device Mounting Device FIG. 2 is a cross-sectional view of the electronic device mounting device and the electronic device in a cross section along the tire circumferential direction shown in FIG. The electronic device mounting apparatus 10 includes a first mounting member 11 that is directly or indirectly mounted on the surface of the inner liner 4, a second mounting member 15 that is mounted with the electronic device 7 and is fitted to the first mounting member 11. Have.

  The first mounting member 11 is formed on the pedestal portion 12 made of an elastomer having a fixing surface that is directly or indirectly attached to the surface of the inner liner 4, and on the opposing surface side facing the fixing surface of the pedestal portion. And a C-shaped ring portion 13 projecting inward from the pedestal portion.

  The second mounting member 15 has a columnar support portion 16 having a support surface 16p that supports the electronic device 7, and an insertion space into which the inner portion of the ring portion 13 can be inserted. The housing portion 17 and a guide portion 18 (see FIG. 5) for guiding the ring portion 13 to the housing portion 17 are provided. The ring portion 13 is configured to be guided to the storage portion 17 along the guide portion 18, and the ring portion 13 of the first mounting member 11 is stored in the storage portion 17 of the second mounting member 15. The guide portion, the storage portion, and the ring portion are configured to be fitted.

  FIG. 3 is a plan view of the first attachment member. The pedestal portion 12 of the first mounting member 11 has a cylindrical shape whose diameter decreases upward. The bottom surface of the pedestal portion 12 serves as a fixed surface 12a fixed to the tire surface (in this embodiment, an inner liner). The facing surface 12b facing the fixed surface 12a is located on the side where the second mounting member is mounted. The pedestal is formed with a circular recess 12c that is recessed from the facing surface 12b toward the bottom surface, and the second mounting member 15 is inserted into the recess 12c. A C-shaped ring portion 13 is disposed on the facing surface.

  FIG. 4 is a perspective view of the ring portion 13. The ring portion 13 has a shape in which a part of the flat washer is cut out, and has a C shape in plan view. In the ring portion 13, a metal layer 13c and a rubber layer 13d are laminated. As for the ring part 13, the rubber layer is arrange | positioned between the metal layers in the thickness direction. The ring portion 13 is bonded onto the pedestal portion 12 and is disposed so as to protrude inward from the inner surface of the recessed portion 12c of the pedestal portion 12 in plan view. The ring portion 13 is fixed to the pedestal portion 12 on the surface in contact with the pedestal portion 12. A portion of the ring portion 13 that protrudes inward from the pedestal portion is configured to be deformable in the vertical direction.

  A thickness T1 of the ring portion is formed to be smaller than a thickness T2 of the storage portion 17 (see FIG. 5). The thickness T2 of the storage portion 17 is the size of the storage portion in the thickness direction of the ring portion. One end 13 a of the ring portion 13 is deformed toward the second attachment member 15, and the other end 13 b of the ring portion 13 is deformed toward the side away from the second attachment member 15.

  FIG. 5 is a front view of the second attachment member 15. The support portion 16 of the second attachment member 15 has a cylindrical shape. In FIG. 5, the diameter of the upper surface located on the upper side and the diameter of the lower surface located on the lower side are substantially the same. A central portion 16c having a smaller diameter than the upper surface and the lower surface is formed between the upper surface portion 16a formed with the upper surface and the lower surface portion 16b formed with the lower surface. Therefore, the center part 16c is a center part of the support part 16 in the thickness direction, and is recessed inside. The indented portion is a storage portion 17 into which the ring portion 13 of the first attachment member 11 is inserted. The ring portion 13 is disposed on the outer periphery of the central portion 16 c while being stored in the storage portion 17.

  A guide portion 18 that guides the ring portion 13 to the storage portion 17 is formed on the lower surface portion 16b. The guide portion 18 is formed so as to penetrate the lower surface portion 16b in the vertical direction. The guide portion 18 has an inclined surface 18a along which the ring portion extends, and functions as a screw that meshes with the ring portion 13.

(3) Attaching Mode of Electronic Device FIG. 6 is a diagram for explaining a mounting mode of an electronic device to a tire using the electronic device mounting device. First, when the electronic device is mounted on the tire, as shown in FIG. 5A, the second mounting member 15 on which the electronic device 7 is mounted is fixed to the first mounting member 11 fixed to the inner liner 4 of the tire 1. Place it facing the One end 13a of the ring portion 13 of the first mounting member 11 is deformed toward the second mounting member side. In addition, although the one end 13a of the ring part 13 may be deform | transforming previously, you may be comprised so that it may deform | transform when mounting | wearing.

  Next, the first mounting member 11 is rotated in the A direction, the one end 13 a of the ring portion 13 is moved along the inclined surface 18 a of the guide portion 18, and the ring portion 13 is guided toward the storage portion 17. At this time, since the thickness T1 of the ring portion 13 is thicker than the thickness T2 of the storage portion 17, the ring portion 13 is compressed in the thickness direction. The rubber layer 13d between the metal layers 13c of the ring part 13 is compressed and deformed in the thickness direction, and the thickness of the ring part 13 is reduced. By moving the ring portion 13 along the guide portion 18 from the one end 13 a side of the ring portion 13, the ring portion 13 can be disposed around the central portion 16 c of the support portion 16.

  The ring portion 13 functions as a female screw and the guide portion 18 functions as a male screw, and the ring portion 13 can be stored in the storage portion 17. (B) shows a state in which the ring portion 13 is stored in the storage portion 17. In this state, the storage portion 17 and the guide portion 18 and the ring portion 13 are fitted. The ring portion 13 is sandwiched between the upper surface portion and the lower surface portion in the vertical direction X shown in FIG. 6 and in the tire radial direction trd in the mounted state shown in FIG. 1, and does not move in the vertical direction X.

  On the other hand, when removing the electronic device 7 from the tire 1, the first mounting member 11 is rotated in the B direction so that the other end 13 b of the ring portion of the first mounting member 11 is aligned with the inclined surface 18 a of the guide portion 18. Then, it is guided toward the direction away from the storage unit. In addition, although the other end 13b of the ring part 13 is deform | transforming beforehand to the 2nd attachment member side, you may be comprised so that it may deform | transform when mounting | wearing.

  (C) has shown the state which has guide | induced the ring part 13 to the outer side from the accommodating part 17. FIG. By moving the ring part 13 along the guide part from the end of Hota side, the ring part can be moved out of the storage part. Therefore, the first mounting member and the second mounting member can be separated, and the second mounting member on which the electronic device is mounted can be removed from the tire.

(4) Action / Effect According to the electronic device mounting apparatus 10 according to the present invention, the guide portion 18 is obtained by inserting the ring portion 13 of the first mounting member 11 into the storage portion 17 of the second mounting member 15 from the one end 13a. And the accommodating part 17 and the ring part 13 fit. The second mounting member 15 to which the electronic device 7 is fixed is mounted on the first mounting member 15 that is fixed to the tire 1, and the electronic device 7 is fixed to the tire 1 through the first mounting member 11 and the second mounting member 15. In addition, the sensor can be supported so as to interlock with the tire inner surface. Therefore, compared with the case where it fixes with the tension | tensile_strength of rubber | gum like a rubber patch, the fastening force with respect to the tire surface can be raised and the adhesive force with respect to the tire surface of an electronic device can be raised. Therefore, it is possible to suppress the deviation between the movement of the inner surface of the tire and the movement of the sensor and perform measurement with desired accuracy.

  Further, since the one end 13 a of the ring portion 13 is deformed toward the second attachment member 15, the ring portion 13 can be smoothly guided to the guide portion 18 and the storage portion 17. Further, the ring portion 13 can be firmly fixed by the repulsive force of the deformation of the ring portion in a state where the ring portion 13 is inserted into the storage portion 17.

  On the other hand, since the other end of the ring portion is deformed toward the side away from the second mounting member, the ring portion is smoothly guided from the inside of the storage portion to the outside of the storage portion (the guide portion side or the first mounting member side). be able to. Further, the ring portion can be firmly fixed by the repulsive force of the deformation of the ring portion in a state where the ring portion is inserted into the storage portion.

  Since the ring portion has a rubber layer and the thickness T1 of the ring portion is larger than the thickness T2 of the storage portion, the rubber layer of the ring portion is deformed in a state where the ring portion is stored in the storage portion, and the thickness direction The wobbling of the assembly is absorbed and can be fixed more firmly.

  For example, when the ring part is composed of only one metal layer, the ring part is not compressed and deformed in the thickness direction, so that the thickness of the ring part needs to be smaller than the thickness of the storage part. In such a case, since a gap is generated between the ring part and the storage part, an extra vibration is generated in the electronic device with respect to the tire due to the vibration generated when the tire rolls, and the vibration generated in the tire is measured. The accuracy may be reduced.

  However, by configuring the rubber layer between the metal layers as in the ring portion 13 according to the present embodiment, the ring portion 13 itself is compressed and deformed in the thickness direction. Therefore, the thickness of the ring part 13 can be made larger than the thickness of the storage part 17 of the detachable base. Since the ring portion 13 can be compressed in the thickness direction, when the ring portion 13 passes through the guide portion 18 and reaches the storage portion 17 during assembly, the ring portion itself passes through the storage portion while being compressed. Therefore, in a state where the ring portion is completely contained in the storage portion, the electronic device is fixed in a state where there is no backlash due to the compression reaction force of the ring portion 13.

(5) Other Embodiments As described above, the contents of the present invention have been disclosed through the embodiments of the present invention. However, it is understood that the description and drawings constituting a part of this disclosure limit the present invention. Should not. For example, the ring portion according to the present embodiment is configured by laminating a plurality of layers, but may be a single layer. Further, the ring portion is not limited to three layers, and may be four layers or more, or may be two layers.

  From this disclosure, various alternative embodiments, examples and operational techniques will be apparent to those skilled in the art. 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.

  X ... vertical direction, trd ... tire radial direction, twd ... tire width direction, 1 ... tire, 2 ... bead part, 3 ... carcass layer, 3a ... main body ply, 3b ... folding ply, 4 ... inner liner, 5 ... tread part 6 ... belt layer, 7 ... electronic device, 8 ... tire side portion, 9 ... rim, 10 ... electronic device mounting device, 11 ... first mounting member, 12 ... pedestal portion, 12a ... fixing surface, 12b ... facing surface, 12c ... Depression, 13 ... Ring part, 15 ... Second mounting member, 16 ... Supporting part, 16a ... Upper surface part, 16b ... Lower surface part, 16c ... Central part, 17 ... Storage part, 18 ... Guide part

Claims (3)

An electronic device mounting apparatus for mounting an electronic device on the inner liner side of a tire,
A first attachment member that is directly or indirectly attached to the surface of the inner liner, and a second attachment member that is mounted with the electronic device and fits with the first attachment member,
The first mounting member is formed on an pedestal portion made of an elastomer having a fixed surface that is directly or indirectly mounted on the surface of the inner liner, and on the opposite surface side facing the fixed surface of the pedestal portion, A C-shaped ring portion projecting inward from the pedestal portion on the opposing surface;
The second attachment member includes a columnar support portion having a support surface for supporting the electronic device, a storage portion formed on an outer peripheral surface of the support portion, into which the ring portion is inserted, and the ring portion as described above. And a guide portion that leads to the storage portion,
The ring part is guided to the storage part along the guide part, and the first attachment member and the second attachment member are fitted , and
The ring part is composed of a plurality of layers,
An electronic device mounting apparatus , wherein a rubber layer is disposed between at least two metal layers .   One end of the ring portion is deformed toward the second mounting member, and the other end of the ring portion is deformed toward a side away from the second mounting member. The electronic device mounting apparatus described. The electronic device mounting apparatus according to claim 1 , wherein a thickness of the ring portion is longer than a dimension of the storage portion in a thickness direction of the ring portion .

Images