JP2014117984A - Tire air pressure detection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tire air pressure detection device capable of adjusting a fitting angle in accordance with a size and a type of a tire wheel.SOLUTION: A tire air pressure detection device 1 includes: a body part 2; two holding parts 3; and two fitting members 4. The fitting member 4 has: a rod part 4a; a spherical part 4b formed at one end of the rod part 4a; and a fitting part 4c formed on the other end of the rod part 4a. The fitting part 4c has a fitting surface inclined with respect to a longitudinal direction of the rod part 4a. The holding part 3 comprises a pair of a plate-like parts 3a. The pair of plate-like parts 3a face each other so as to sandwich one end side of the rod part 4a, and at the pair of plate-like parts 3a, a rotary holding part 3c is formed for rotatably holding the spherical part 4b. The fitting member 4 is rotatable along the pair of plate-like parts 3a with the spherical part 4b being a fulcrum, and also, it is rotatable around an axis with the longitudinal direction of the rod part 4a being the axis.

Description

  The present invention relates to a tire air pressure detection device that detects information such as tire air pressure.

  In recent years, in order to improve vehicle safety, a tire monitoring system that detects information such as tire air pressure and transmits the detected information to the vehicle body side has been proposed. In such a tire monitoring system, a tire air pressure detection device (also referred to as a vehicle information detection / transmission device) attached to a tire wheel rim or the like is used. The tire air pressure detecting device normally houses a detecting means for detecting information such as tire air pressure in the case. In recent years, tire pressure detection devices are also often used for vehicle control based on slipping and posture of a vehicle by detecting information such as acceleration.

  The tire air pressure detecting device is bonded and fixed to an outer peripheral surface of a tire wheel rim, for example. The outer peripheral surface of the rim is a curved surface inclined with respect to the rotation axis of the tire wheel, such as a combination of the outer peripheral surfaces of a plurality of truncated cones. When a tire air pressure detecting device as described above is mounted on the outer peripheral surface of such a rim, the tire air pressure detecting device is inclined with respect to the rotation axis of the tire wheel, and the acceleration component is synthesized by the inclination, thereby detecting the acceleration. Accuracy may be reduced. Therefore, it is desirable that the mounting angle of the tire air pressure detection device can be adjusted in accordance with the inclination of the outer peripheral surface of the rim. As such a tire pressure detecting device, for example, a tire pressure detecting device having a structure as shown in Patent Document 1 has been proposed.

  FIG. 16 is an explanatory view showing a conventional vehicle information detection / transmission device assembly 101 (tire pressure detection device) according to Patent Document 1. As shown in FIG. As shown in FIG. 16, the vehicle information detection / transmission device assembly 101 includes a vehicle information detection / transmission device mounting jig 102 and a vehicle information detection / transmission device 103.

  The vehicle information detection / transmission device mounting jig 102 includes a base portion 104 and a pedestal 105 disposed on the upper side of the base portion 104. The lower surface of the base portion 104 is a flat rim mounting surface 104a that is fixed to the rim of the tire wheel. The upper surface of the pedestal 105 is a device attachment surface 105a to which the vehicle information detection / transmission device 103 is attached. The vehicle information detection / transmission device 103 includes detection means such as a sensor (not shown) and a plastic (synthetic resin) case 108 that houses the detection means. The lower surface 108 a of the case 108 is attached to the device attachment surface 105 a of the pedestal 105.

  One end portion 104M of the base portion 104 and one end portion 105M of the pedestal 105 are rotatably connected by a hinge 106. The other end portion 104N of the base portion 104 and the other end portion 105N of the pedestal 105 are connected by a screw 107. Then, by rotating the screw 107, the other end portion 105N of the pedestal 105 can be moved in a direction approaching and separating from the other end portion 104N of the base portion 104. By such movement of the other end portion 105N of the pedestal 105, the angle of the device mounting surface 105a of the pedestal 105 can be adjusted.

  When the vehicle information detection / transmission device assembly 101 is attached to the outer peripheral surface of the tire wheel rim, the mounting angle of the vehicle information detection / transmission device 103 is inclined with respect to the rotation axis of the tire wheel by using such a structure. Can be adjusted to not.

JP 2008-105597 A

  However, in the conventional vehicle information detection and transmission device assembly 101 (tire pressure detection device), the rim mounting surface 104a of the base portion 104 is a flat surface, and therefore when this surface is mounted on a curved surface such as the outer peripheral surface of the tire wheel rim, The contact portion between the rim mounting surface 104a and the outer peripheral surface of the rim is limited. Therefore, for example, when the vehicle information detection and transmission device assembly 101 having a certain length with respect to the rotation direction of the tire is attached by attaching the vicinity of the center of the rim mounting surface 104a to the outer peripheral surface of the rim. A gap is formed between the vicinity of both ends of the rim mounting surface 104a and the outer peripheral surface of the rim with respect to the tire rotation direction. Therefore, the adhesion between the rim mounting surface 104a and the outer peripheral surface of the rim tends to become unstable. If the rim mounting surface 104a is curved in accordance with the shape of the outer peripheral surface of the rim, such a problem can be solved, but the inclination of the outer peripheral surface of the rim differs depending on the size and type of the tire wheel. Cannot correspond to the type.

  The present invention has been made in view of such a state of the art, and an object of the present invention is to provide a tire air pressure detecting device capable of adjusting a mounting angle in accordance with the size and type of a tire wheel.

  In order to solve this problem, in the tire air pressure detecting device according to claim 1, there are provided a main body portion for storing detection means for detecting tire information, and two main body portions formed at predetermined intervals. A holding part, and an attachment member held by each of the two holding parts, wherein the attachment member includes a rod-like rod part, a spherical part formed at one end of the rod part, and the rod part. An attachment portion formed at an end and attached to the attachment position on the tire side, the attachment portion having an attachment surface inclined with respect to the longitudinal direction of the rod portion, and the holding portion, The pair of plate-like portions are opposed to each other so as to sandwich the one end side of the rod portion of the attachment member, and the pair of plate-like portions includes the attachment member. A rotation holding part that holds the spherical part rotatably is formed, Serial mounting member with a rotatable along said pair of plate-shaped portion of the spherical portion as a fulcrum, characterized in that it is rotatable on its axis around the longitudinal direction of the bar portion as an axis.

  This tire air pressure detecting device includes mounting members respectively held by two holding portions formed at a predetermined interval in the main body portion, and the mounting member has a mounting portion that is attached to a mounting position on the tire side. doing. In addition, the attachment member can rotate along a pair of plate-like portions with the spherical portion serving as a fulcrum, and can rotate around the axis about the longitudinal direction of the rod portion. Therefore, even if the mounting position on the tire side is a curved surface such as the outer peripheral surface of the rim of the tire wheel, the mounting member is rotated so as to change the inclination of the mounting surface according to the curved surface of the mounting position. Can do. As a result, it is possible to adjust the mounting angle of the tire pressure detecting device in accordance with the size and type of the tire wheel.

  The tire pressure detection device according to claim 2, wherein the rotation holding portion is a round hole penetrating the pair of plate-like portions, or a hemispherical concave portion formed on an opposing surface of the pair of plate-like portions. It is characterized by being.

  For example, when the rotation holding part is a square hole penetrating a pair of plate-like parts, and the rotation holding part and the spherical part are made of a material such as a synthetic resin, the rotation holding part and the spherical part are in contact with each other at a point. Therefore, the load is concentrated at the time of contact, and the rotation holding portion and the spherical portion are easily deformed. However, in this tire air pressure detecting device, the rotation holding part is a round hole penetrating the pair of plate-like parts, or a hemispherical recess formed on the opposing surface of the pair of plate-like parts. The spherical portion of the mounting member can be in contact with the circumferential portion of the round hole or the hemispherical concave surface of the recess. Therefore, even if the rotation holding portion and the spherical portion are made of a material such as a synthetic resin, the load applied to each other at the time of contact between the rotation holding portion and the spherical portion can be dispersed, and deformation accompanying the contact can be suppressed.

  The tire air pressure detecting device according to claim 3 is characterized in that an adhesive through hole or an adhesive concave portion capable of being filled with an adhesive is formed on the mounting surface.

  In this tire air pressure detection device, an attachment through-hole or an adhesion recess is formed on the mounting surface, which can be filled with an adhesive. Therefore, when the mounting portion of the mounting member is bonded and fixed to the mounting position on the tire side, the mounting surface and the inner peripheral surface of the bonding through-hole or bonding concave portion come into contact with the adhesive, The contact area can be increased. Therefore, the adhesive strength between the attachment portion and the adhesive can be improved. As a result, the adhesion between the attachment portion of the attachment member and the attachment position on the tire side is stabilized.

  In the tire air pressure detecting device of the present invention, it is provided with attachment members respectively held by two holding portions formed at a predetermined interval in the main body portion, and the attachment members are attached to the attachment position on the tire side. have. In addition, the attachment member can rotate along a pair of plate-like portions with the spherical portion serving as a fulcrum, and can rotate around the axis about the longitudinal direction of the rod portion. Therefore, even if the mounting position on the tire side is a curved surface such as the outer peripheral surface of the rim of the tire wheel, the mounting member is rotated so as to change the inclination of the mounting surface according to the curved surface of the mounting position. Can do.

  Therefore, according to the present invention, it is possible to provide a tire air pressure detection device capable of adjusting the mounting angle in accordance with the size and type of the tire wheel.

1 is a perspective view of a tire air pressure detection device 1 according to an embodiment of the present invention. It is a disassembled perspective view of the tire air pressure detection apparatus 1 shown in FIG. It is explanatory drawing which shows the structure of the main-body part 2 and the holding | maintenance part 3 which are shown in FIG. It is explanatory drawing which shows the structure of the attachment member 4 shown in FIG. It is explanatory drawing which shows the assembly structure of the tire air pressure detection apparatus 1 shown in FIG. It is a partial expanded sectional view which shows the AA cross section of FIG. It is explanatory drawing which shows rotation operation | movement of the attachment member 4 shown in FIG. It is explanatory drawing which shows the attachment position to the tire wheel 11 of the tire pressure detection apparatus 1 shown in FIG. It is explanatory drawing which shows the attachment method to the tire wheel 11 of the tire pressure detection apparatus 1 shown in FIG. It is explanatory drawing which shows the attachment angle adjustment method of the tire air pressure detection apparatus 1 shown in FIG. It is explanatory drawing which looked at the tire air pressure detection apparatus 1 shown in FIG. 10 from the front. It is explanatory drawing which shows the fixing method to the tire wheel 11 of the tire pressure detection apparatus 1 shown in FIG. It is explanatory drawing which shows the structure of the main-body part 22 and the holding | maintenance part 23 which concern on the 1st modification of this invention. It is explanatory drawing which shows the structure of the main-body part 32 and the holding | maintenance part 33 which concern on the 2nd modification of this invention. It is explanatory drawing which shows the structure of the attachment member 44 which concerns on the 3rd modification of this invention. It is explanatory drawing which shows the conventional vehicle information detection transmission apparatus assembly 101 (tire pressure detection apparatus) based on patent document 1. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each drawing, the description will be made with the X1 direction as the left, the X2 direction as the right, the Y1 direction as the front, the Y2 direction as the rear, the Z1 direction as the upper side, and the Z2 direction as the lower side.

  First, the structure of the tire pressure detecting device 1 according to the embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG. 1 is a perspective view of a tire air pressure detection device 1 according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the tire air pressure detection device 1 shown in FIG. FIG. 3 is an explanatory view showing the structure of the main body 2 and the holding part 3 shown in FIG. FIG. 3A is a top view, and FIG. 3B is a side view seen from the left (X1 side). FIG. 4 is an explanatory view showing the structure of the attachment member 4 shown in FIG. 4A is a top view, and FIG. 4B is a side view seen from the left (X1 side).

  As shown in FIGS. 1 and 2, the tire air pressure detection device 1 includes a main body portion 2, two holding portions 3 formed on the main body portion 2, and attachment members 4 respectively held on the two holding portions 3. It is equipped with.

  The main body 2 is a box-shaped member made of synthetic resin. The main body 2 has a space in the interior thereof, and houses a detection unit that detects information such as tire air pressure (not shown). As shown in FIG. 3, the main body 2 has a substantially rectangular parallelepiped outer shape. And the main-body part 2 has a surface which mutually opposes at a front-end part (Y1 side) and a rear-end part (Y2 side), and these surfaces serve as the holding | maintenance part formation surface 2a. The holding portions 3 are formed so as to extend in opposite directions from the two holding portion forming surfaces 2a.

  The holding part 3 is made of a synthetic resin and is formed integrally with the main body part 2. As shown in FIG. 3, the two holding portions 3 include a pair of plate-like portions 3 a that are opposed to each other. The pair of plate-like parts 3a has a substantially rectangular plate surface extending in the front-rear (Y1-Y2) direction and the vertical (Z1-Z2) direction, and left and right (X1-X2) on the holding part forming surface 2a of the main body part 2. They are arranged side by side. The opposing plate surfaces of the pair of plate-like portions 3a are opposed surfaces 3b. A rotation holding portion 3c is formed on the pair of plate-like portions 3a. The rotation holding part 3c is a round hole that penetrates the pair of plate-like parts 3a in the left-right (X1-X2) direction.

  As shown in FIG. 3, an interval between the centers of the rotation holding portions 3c formed on the two holding portions 3 (hereinafter, abbreviated as an interval between the holding portions 3) is L1. The facing distance between the facing surfaces 3b of the pair of plate-like portions 3a (hereinafter referred to as the facing distance of the plate-like portions 3a) is W1. The diameter of the round hole portion of the rotation holding portion 3c (hereinafter, abbreviated as the diameter of the rotation holding portion 3c) is D1.

  The attachment member 4 is made of a synthetic resin. As shown in FIG. 4, the attachment member 4 includes a rod portion 4a, a spherical portion 4b, and an attachment portion 4c. The bar portion 4a has an elongated cylindrical (bar-shaped) outer shape extending in the vertical (Z1-Z2) direction. The spherical portion 4b is formed at the upper end (Z1 side) of the rod portion 4a and has a substantially spherical outer shape. The attachment portion 4c is formed at the lower end (Z2 side) of the rod portion 4a. The attachment portion 4c has an outer shape in which a cylindrical outer peripheral portion extending in the vertical (Z1-Z2) direction is obliquely cut and the portion below the cut surface is removed. An elliptical inclined surface that is inclined with respect to the longitudinal direction of the rod portion 4a is formed at the lower end (Z2 side) of the attaching portion 4c, and this inclined surface serves as an attaching surface 4d that is attached to the tire side. A plurality of bonding through holes 4e are formed on the mounting surface 4d. In the present embodiment, the bonding through-hole 4e is a cylindrical through-hole that penetrates the attachment portion 4c in the vertical (Z1-Z2) direction. The bonding through-hole 4e is a hole for pouring and filling an adhesive.

  As shown in FIG. 4, the diameter of the cylindrical portion of the rod portion 4a (hereinafter referred to as the diameter of the rod portion 4a) is D2. The diameter of the spherical portion of the spherical portion 4b (hereinafter, abbreviated as the diameter of the spherical portion 4b) is D3. The diameter of the cylindrical portion of the attachment portion 4c (hereinafter, abbreviated as the diameter of the attachment portion 4c) is D4. The diameter D2 of the rod part 4a is set slightly smaller than the facing distance W1 of the plate-like part 3a shown in FIG. The diameter D3 of the spherical portion 4b is set larger than the facing distance W1 of the plate-like portion 3a. The diameter D4 of the attachment portion 4c is set larger than the diameter D2 of the rod portion 4a.

  Next, the assembly structure of the tire air pressure detection device 1 will be described with reference to FIGS. 5 and 6. FIG. 5 is an explanatory view showing an assembly structure of the tire air pressure detecting device 1 shown in FIG. FIG. 5A is a top view, and FIG. 5B is a side view seen from the left (X1 side). FIG. 6 is a partially enlarged cross-sectional view showing the AA cross section of FIG. In FIG. 5, a plurality of bonding through holes 4e on the mounting surface 4d are omitted. In FIG. 6, the rotation holding part 3c vicinity of the holding part 3 is expanded.

  As shown in FIG. 5, the attachment members 4 are respectively held by two holding portions 3 formed integrally with the main body portion 2. As shown in FIGS. 5 and 6, the spherical portion 4 b of the attachment member 4 is held so as to be accommodated in the rotation holding portion 3 c of the holding portion 3. A portion of the attachment member 4 near the spherical portion 4 b of the rod portion 4 a is sandwiched between a pair of plate-like portions 3 a of the holding portion 3.

  As described above, the diameter D2 of the rod portion 4a is set slightly smaller than the opposing distance W1 of the plate-like portion 3a. Therefore, the pair of plate-like portions 3a of the holding portion 3 and the rod portion 4a of the mounting member 4 are used. The gap between the two can be narrowed. When the gap between the pair of plate-like portions 3a and the rod portion 4a is widened, the rod portion 4a is easily inclined in the left-right (X1-X2) direction, so that the gap between the pair of plate-like portions 3a and the rod portion 4a is increased. A narrow gap is desirable.

  As described above, the diameter D3 of the spherical portion 4b is set to be larger than the facing distance W1 of the plate-like portion 3a. Therefore, the spherical portion 4b is more lateral (X1-X2) than the opposing surface 3b of the plate-like portion 3a. ) Protruding in the direction. When the diameter of the portion where the spherical portion 4b and the facing surface 3b of the plate-like portion 3a intersect (including the extended portion of the facing surface 3b) (hereinafter referred to as the diameter of the intersecting portion) is D5, the diameter of the rotation holding portion 3c. D1 is set to have substantially the same size as the diameter D5 of the intersecting portion. Therefore, the rotation holding portion 3c can be in contact with the spherical portion 4b of the mounting member 4 so as to be surrounded by the circumferential portion of the round hole, and disperse the load applied to each other when the rotation holding portion 3c and the spherical portion 4b are in contact with each other. be able to. In this way, the attachment member 4 is rotatably held by the holding portion 3.

  In such an assembly structure, for example, the pair of plate-like portions 3a of the holding portion 3 are bent so that the opposing distance W1 of the plate-like portion 3a is widened, the spherical portion 4b side of the mounting member 4 is pushed in, and the rotation holding portion 3c is pressed. This can be realized by fitting the spherical portion 4b into the.

  In FIG. 5, the attachment portion 4 c of the attachment member 4 is located below the holding portion 3, and the attachment surface 4 d of the attachment member 4 faces the left side (X1 side). When the distance between the centers of the attachment surfaces 4d of the two attachment members 4 (hereinafter, abbreviated as the interval between the attachment members 4) is L2, the rod portions 4a of the two attachment members 4 are both directed in the vertical (Z1-Z2) direction. In this case, the distance L2 between the attachment members 4 is substantially equal to the distance L1 between the holding portions 3 shown in FIG.

  Next, the rotation operation of the attachment member 4 will be described with reference to FIG. FIG. 7 is an explanatory view showing the rotation operation of the attachment member 4 shown in FIG. FIG. 7A is a top view, and FIG. 7B is a side view seen from the left (X1 side).

  As shown in FIG. 7A, the attachment member 4 can rotate around the axis about the longitudinal direction of the rod portion 4a. Moreover, as shown in FIG.7 (b), the attachment member 4 can rotate also to the direction along a pair of plate-shaped part 3a by using the spherical part 4b as a fulcrum. When the attachment member 4 is rotated in the direction along the pair of plate-like portions 3a, the distance L2 between the attachment members 4 changes accordingly.

  Next, a method for attaching the tire pressure detecting device 1 will be described with reference to FIGS. 8 and 9. FIG. 8 is an explanatory view showing a mounting position of the tire pressure detecting device 1 shown in FIG. 1 on the tire wheel 11. FIG. 9 is an explanatory view showing a method of attaching the tire pressure detecting device 1 shown in FIG. 1 to the tire wheel 11.

  As shown in FIG. 8, the tire air pressure detection device 1 is attached to a tire wheel 11 on the tire 10 side. The tire wheel 11 is a member for transmitting the power of a vehicle (not shown) to the tire 10. The tire wheel 11 is usually made of a metal such as iron or aluminum. The tire wheel 11 has a rotating shaft 12 extending in the left-right (X1-X2) direction, and can be rotated around the rotating shaft 12 when attached to the vehicle. The tire wheel 11 has a rim 11a. The rim 11 a is a portion corresponding to the outer peripheral portion of the tire wheel 11. The outer peripheral surface 11b of the rim 11a is shaped like a combination of the outer peripheral surfaces of a plurality of truncated cones with the rotation shaft 12 as an axis, and is a curved surface inclined with respect to the rotation shaft 12 of the tire wheel 11. . And the outer peripheral surface 11b of the rim | limb 11a becomes the to-be-attached position 11c to which the tire air pressure detection apparatus 1 is attached.

  There are two attachment positions 11 c of the tire wheel 11 corresponding to the two attachment members 4 of the tire air pressure detection device 1. The two attachment positions 11c are arranged along the rotation direction of the tire wheel 11, and the attachment portions 4c of the attachment member 4 are attached to the two attachment positions 11c. When the distance between the centers of the two mounted positions 11c (hereinafter, abbreviated as the distance between the mounted positions 11c) is L3, the distance L3 between the mounted positions 11c is substantially equal to the distance L2 between the mounting members 4. In FIG. 8, the tire air pressure detection device 1 is attached to the upper portion of the tire wheel 11, but the position of the tire air pressure detection device 1 changes as the tire wheel 11 rotates.

  As shown in FIG. 9, the attachment surface 4 d of the attachment portion 4 c is attached to the attachment position 11 c of the tire wheel 11. The attachment surface 4d and the attachment position 11c are bonded and fixed. As described above, the mounting surface 4d is a slope inclined with respect to the longitudinal direction of the rod portion 4a. The mounting surface 4d is an inclined surface that is also inclined with respect to the rotating shaft 12. Further, the mounting position 11c of the tire wheel 11 is a curved surface inclined with respect to the rotating shaft 12 as described above.

  An inclination angle of the attachment surface 4d with respect to the longitudinal direction of the rod portion 4a (hereinafter referred to as an inclination angle of the attachment surface 4d) is φ. An inclination angle of the mounting surface 4d of the mounting member 4 with respect to the rotating shaft 12 (hereinafter, abbreviated as a mounting angle of the mounting surface 4d) is defined as θ. The inclination angle of the mounting position 11c of the tire wheel 11 with respect to the rotating shaft 12 (hereinafter, abbreviated as the inclination angle of the mounting position 11c) is ψ.

  The inclination angle ψ of the mounted position 11 c varies depending on the size and type of the tire wheel 11. However, as described above, the mounting member 4 has a structure that can rotate in two directions. With this structure, the mounting angle θ of the mounting surface 4d and the orientation of the mounting surface 4d in accordance with the inclination angle ψ of the mounted position 11c. And can be adjusted.

  Next, a method for adjusting the mounting angle of the tire air pressure detection device 1 will be described with reference to FIGS. 10 and 11. FIG. 10 is an explanatory view showing a method for adjusting the mounting angle of the tire air pressure detecting device 1 shown in FIG. FIG. 10A shows the case where the inclination angle ψ of the attached position 11c is the steepest, and FIG. 10B shows the case where the inclination angle ψ of the attached position 11c is gentle. FIG. 11 is an explanatory view of the tire air pressure detection device 1 shown in FIG. 10 as viewed from the front. FIG. 11A shows the case where the inclination angle ψ of the attached position 11c is the steepest, and FIG. 11B shows the case where the inclination angle ψ of the attached position 11c is gentle.

  First, the case where the tire pressure detection device 1 is attached to the tire wheel 11 having the steepest inclination angle ψ of the mounted position 11c among several types of tire wheels 11 assumed to be used will be described. As shown in FIGS. 10 (a) and 11 (a), in the tire air pressure detection device 1 of the present embodiment, in such a tire wheel 11, the rod portion 4a of the mounting member 4 is in the vertical (Z1-Z2) direction. The inclination angle φ of the attachment surface 4d is set so that the inclination angle ψ of the attachment position 11c substantially coincides with the attachment angle θ of the attachment surface 4d. Therefore, the rod part 4a of the attachment member 4 may remain in the vertical (Z1-Z2) direction. Then, by rotating the two attachment members 4 around the axis of the longitudinal direction of the rod portion 4a, the inclination direction of the attachment position 11c of the tire wheel 11 (hereinafter, the inclination direction of the attachment position 11c). And the direction of the mounting surface 4d can be matched.

  Next, the case where the tire air pressure detection device 1 is attached to the tire wheel 11 having a gentle inclination angle ψ of the mounted position 11c among several types of tire wheels 11 assumed to be used will be described. As described above, in the tire air pressure detection device 1 of the present embodiment, the inclination angle φ of the attachment surface 4d is set in accordance with the tire wheel 11 with the steep inclination angle ψ of the attached position 11c. Therefore, with respect to the tire wheel 11 where the inclination angle ψ of the attachment position 11c is gentle, the inclination angle ψ of the attachment position 11c is maintained if the rod portion 4a of the attachment member 4 is directed in the vertical (Z1-Z2) direction. The mounting angle θ of the mounting surface 4d becomes steeper than that.

  However, in the tire air pressure detecting device 1, the two attachment members 4 can rotate along the pair of plate-like portions 3a with the spherical portion 4b as a fulcrum. Moreover, the two attachment members 4 can rotate around the axis about the longitudinal direction of the rod portion 4a. Therefore, as shown in FIG. 10B, the attachment member 4 is rotated along the pair of plate-like portions 3a in the direction in which the interval L2 of the attachment member 4 is widened, and the longitudinal direction of the rod portion 4a is taken as the axis. As shown in FIG. 11 (b), the attachment angle θ of the attachment surface 4d is made gentle according to the inclination angle ψ of the attachment position 11c, and the inclination direction of the attachment position 11c is changed. The orientation of the mounting surface 4d can be matched.

  In the tire pressure detecting device 1, the mounting angle θ of the mounting surface 4d and the direction of the mounting surface 4d are changed in accordance with the size and type of the tire wheel 11 in this way, whereby the mounting of the tire pressure detecting device 1 is performed. The angle can be adjusted to an optimum state. Moreover, since the attachment angle θ of the attachment surface 4d and the orientation of the attachment surface 4d can be changed with respect to the two attachment positions 11c, the attachment portions 4c are respectively provided at the two attachment positions 11c. It can be fixed stably.

  Next, a method for fixing the attachment member 4 to the tire wheel 11 will be described with reference to FIG. FIG. 12 is an explanatory view showing a method of fixing the tire air pressure detecting device 1 shown in FIG. 1 to the tire wheel 11. Fig.12 (a) is a top view of the tire air pressure detection apparatus 1, and FIG.12 (b) is explanatory drawing which shows the BB cross section of Fig.12 (a). In FIG. 12A, the adhesive is omitted.

  As shown in FIG. 12, the adhesive 13 is applied to the mounting surface 4 d of the mounting member 4. Then, the attachment portion 4c of the attachment member 4 is brought close to the attachment position 11c of the tire wheel 11, and the attachment surface 4d is bonded to the attachment position 11c. In this manner, the mounting portion 4c of the mounting member 4 is bonded and fixed to the mounted position 11c of the tire wheel 11.

  As the material of the adhesive 13, a material capable of bonding a synthetic resin such as the attachment member 4 and a metal such as the tire wheel 11 is used. The adhesive 13 having such a material may have different adhesive strength characteristics depending on the adhesive strength to the synthetic resin and the adhesive strength to the metal. In that case, it is desirable to use an adhesive having a high adhesive strength to metal and to improve the adhesive strength between the synthetic resin and the adhesive 13 by processing the shape on the synthetic resin side.

  In this embodiment, the adhesive 13 having a higher adhesive strength to metal than that to synthetic resin is used. Therefore, the adhesive strength between the tire wheel 11 and the adhesive can be increased, and the adhesion on the tire wheel 11 side is stabilized. On the other hand, as shown in FIG. 12, an attachment through-hole 4 e that can be filled with the adhesive 13 is formed on the attachment surface 4 d of the attachment member 4. If the adhesive 13 is poured into the bonding through-hole 4e and filled, the mounting surface 4d coated with the adhesive 13 and the inner peripheral surface of the bonding through-hole 4e filled with the adhesive 13 are formed. The contact area between the attachment part 4c and the adhesive 13 can be increased by contacting with the adhesive 13. Therefore, a larger anchor effect can be expected between the attachment portion 4c and the adhesive 13 as compared with the case where there is no bonding through hole 4e. And the adhesive strength between the attachment part 4c and the adhesive agent 13 can be improved, and adhesion | attachment by the side of the attachment member 4 is stabilized. As a result, the adhesion between the mounting portion 4c of the mounting member 4 and the mounted position 11c of the tire wheel 11 is stabilized.

  As described above, the mounting angle of the tire pressure detection device 1 is adjusted to an optimum state, and the tire pressure detection device 1 is stably fixed to the tire wheel 11. The main body 2 of the tire air pressure detecting device 1 stores a detecting means for detecting information such as tire air pressure (not shown). A tire 10 is attached to the tire wheel 11 and attached to a vehicle (not shown). The tire air pressure detection device 1 detects information such as tire air pressure when the vehicle travels, and transmits the information to the vehicle by a transmission means (not shown). When the tire air pressure detecting device 1 also detects information such as acceleration, the mounting angle of the tire air pressure detecting device 1 is adjusted to an optimum state, so that the detection accuracy of acceleration or the like can be improved.

  Next, the effect of the tire pressure detection device 1 of the present embodiment will be described.

  The tire air pressure detection device 1 according to the present embodiment includes mounting members 4 held by two holding portions 3 formed at a predetermined interval in the main body portion 2, and the mounting member 4 is a tire on the tire 10 side. An attachment portion 4c attached to the attached position 11c of the wheel 11 is provided. In addition, the attachment member 4 can be rotated along the pair of plate-like portions 3a of the holding portion 3 with the spherical portion 4b as a fulcrum, and can be rotated around the axis about the longitudinal direction of the rod portion 4a. Therefore, even if the mounted position 11c on the tire 10 side is a curved surface such as the outer peripheral surface 11b of the rim 11a of the tire wheel 11, the mounting member 4 is adjusted according to the inclination angle ψ and the inclination direction of the mounted position 11c. Can be rotated to change the mounting angle θ of the mounting surface 4d and the direction of the mounting surface 4d. As a result, the mounting angle of the tire pressure detection device 1 can be adjusted to an optimum state in accordance with the size and type of the tire wheel 11.

  Further, in the tire air pressure detection device 1 of the present embodiment, the rotation holding portion 3c is a round hole that penetrates the pair of plate-like portions 3a. For example, when the rotation holding portion 3c is a square hole penetrating the pair of plate-like portions 3a, and the rotation holding portion 3c and the spherical portion 4b are made of a material such as synthetic resin, the rotation holding portion 3c and the spherical portion 4b comes into contact with a point, and the load is concentrated at the time of contact, and the rotation holding portion 3c and the spherical portion 4b are easily deformed. However, in this embodiment, since the rotation holding part 3c is a round hole penetrating the pair of plate-like parts 3a, the rotation holding part 3c is a spherical part of the mounting member 4 so as to be surrounded by a circumferential part of the round hole. 4b can be touched. Therefore, even if the rotation holding part 3c and the spherical part 4b are made of a material such as a synthetic resin, the load applied to each other at the time of contact between the rotation holding part 3c and the spherical part 4b can be dispersed, and deformation accompanying the contact can be suppressed. .

  In the tire air pressure detecting device 1, an attachment through hole 4e that can be filled with the adhesive 13 is formed on the mounting surface 4d. Therefore, when the mounting portion 4c of the mounting member 4 is bonded and fixed to the mounted position 11c on the tire 10 side, the adhesive 13 is applied to the mounting surface 4d, and the adhesive 13 is poured into the bonding through hole 4e. When filled, the attachment surface 4d coated with the adhesive 13 and the inner peripheral surface of the bonding through hole 4e filled with the adhesive 13 are in contact with the adhesive 13, and the attachment portion 4c and the adhesive 13 are in contact with each other. The area can be increased. Therefore, a larger anchor effect can be expected between the attachment portion 4c and the adhesive 13 as compared with the case where there is no bonding through hole 4e. And the adhesive strength between the attaching part 4c and the adhesive agent 13 can be improved. As a result, the adhesion between the mounting portion 4c of the mounting member 4 and the mounted position 11c of the tire wheel 11 is stabilized.

  Next, a modified example of the present invention will be described with reference to FIGS. FIG. 13 is an explanatory view showing the structure of the main body 22 and the holding part 23 according to the first modification of the present invention. FIG. 13A is a top view, and FIG. 13B is a side view seen from the left (X1 side). FIG. 14 is an explanatory view showing the structure of the main body 32 and the holding part 33 according to the second modification of the present invention. FIG. 14A is a top view, and FIG. 14B is a side view seen from the left (X1 side). FIG. 15 is an explanatory view showing the structure of the mounting member 44 according to the third modification of the present invention. FIG. 15A is a top view, and FIG. 15B is a side view seen from the left (X1 side).

  First, a first modification of the present invention will be described. In this modification, the main body portion 2 and the holding portion 3 of the above-described embodiment are replaced with a main body portion 22 and a holding portion 23. As shown in FIG. 13, the main body 22 according to this modification has a substantially rectangular parallelepiped shape and has two holding portion forming surfaces 22a. Two holding portions 23 are formed so as to extend in opposite directions from the two holding portion forming surfaces 22a. The holding part 23 is composed of a pair of plate-like parts 23a like the holding part 3, and a plate surface on the opposite side of the pair of plate-like parts 23a is a facing surface 23b. A rotation holding portion 23c is formed in the pair of plate-like portions 23a.

  The rotation holding portion 23c is a hemispherical recess formed at the center of the opposing surface 23b of the pair of plate-like portions 23a. The concave surface of the hemispherical concave portion of the rotation holding portion 23c is a part of a spherical surface having a diameter substantially the same as the diameter D3 of the spherical portion 4b of the mounting member 4. Therefore, the rotation holding portion 23c can be in contact with the spherical portion 4b of the attachment member 4 so as to be surrounded by the concave surface of the concave portion. And the load which mutually applies at the time of contact with a rotation holding part and a spherical part can be disperse | distributed, and the deformation | transformation accompanying contact can be suppressed. In addition, the shape of the concave portion of the rotation holding portion 23c is not a complete hemisphere, but strictly a part of the hemisphere, but if it can contact the spherical portion 4b of the mounting member 4 so as to be surrounded by the concave surface, The shape of the concave portion of the rotation holding portion 23c may be a part of a hemisphere.

  In this modification, the other structure is the same as that of the above-described embodiment. Also in such a modification, the same effect as the above-described embodiment can be expected.

  Next, a second modification of the present invention will be described. In this modification, the main body portion 2 and the holding portion 3 of the above-described embodiment are replaced with a main body portion 32 and a holding portion 33. As shown in FIG. 14, the main body portion 32 according to this modification has a substantially rectangular parallelepiped shape and has two holding portion forming surfaces 32 a.

  A groove 32b is formed on each of the two holding portion forming surfaces 32a, and the portions located on the left and right of the groove 32b of the main body portion 32 are holding portions 33. The holding part 33 is composed of a pair of plate-like parts 33 a like the holding part 3. The opposing plate surfaces of the pair of plate-like portions 33a are opposed surfaces 33b. A rotation holding portion 33c is formed on the pair of plate-like portions 33a. The rotation holding portion 33c is a round hole that penetrates the pair of plate-like portions 33a in the left-right (X1-X2) direction like the rotation holding portion 3c, and the rotation holding portion 33c rotates the spherical portion 4b of the attachment member 4. Can be held as possible.

  In this modification, the other structure is the same as that of the above-described embodiment. Also in such a modification, the same effect as the above-described embodiment can be expected. And the main-body part 32 and the holding | maintenance part 33 of such a structure are simple in shape, and a process becomes easy.

  Next, a third modification of the present invention will be described. In this modification, the mounting member 4 of the above-described embodiment is replaced with a mounting member 44. As shown in FIG. 15, the attachment member 44 according to this modification includes a rod portion 44a, a spherical portion 44b, and an attachment portion 44c. A lower end portion (Z2 side) of the attachment portion 44c is an attachment surface 44d attached to the tire side. The shapes of the rod portion 44a and the spherical portion 44b are the same as the shapes of the rod portion 4a and the spherical portion 4b. The outer shape of the mounting portion 44c is the same as the outer shape of the mounting portion 4c, but an adhesive recess 44e is formed on the mounting surface 44d of the mounting portion 44c instead of the bonding through hole 4e. The bonding recess 44e is a plurality of columnar recesses recessed upward (Z2 side) from the mounting surface 44d. If the adhesive 13 is filled in such an adhesive recess 44e, an anchor effect can be expected and the adhesive strength can be improved in the same manner as the adhesive through hole 4e of the above-described embodiment.

  In this modification, the other structure is the same as that of the above-described embodiment. Also in such a modification, the same effect as the above-described embodiment can be expected.

  As mentioned above, although embodiment and the modification of this invention were demonstrated, this invention is not limited to said embodiment and modification, It can change suitably, unless it deviates from the objective range of this invention.

  In the above-described embodiment, for example, a material other than a synthetic resin such as a metal may be used for a part of the main body 2, the holding unit 3, and the attachment member 4. Strength can be improved.

  In the embodiment described above, for example, the main body portion 2 and the holding portion 3 can be divided into a left side (X1 side) portion and a right side (X2 side) with respect to the center in the left-right (X1-X2) direction, It may be fixed by a method such as screwing. Utilizing such a structure, the attachment member 4 is sandwiched in a state where the main body 2 and the holding portion 3 are divided, and after the spherical portion 4b of the attachment member 4 is accommodated in the rotation holding portion 3c of the holding portion 3, If the main body 2 and the holding portion 3 are fixed and integrated by a method such as screwing, the mounting member 4 can be easily assembled into the holding portion.

  In the above-described embodiment, for example, the shape of the main body 2 is not a substantially rectangular parallelepiped, and may be a shape such as a cylindrical shape or a polygonal column. In that case, the holding | maintenance part 3 is formed in the opposing surface of the main-body part 2 of such a shape.

  In the above-described embodiment, for example, the holding unit 3 may be formed on a portion other than the holding unit forming surface 2 a of the main body unit 2 as long as the holding unit 3 is formed on the main body unit 2 with a predetermined interval. Absent. In addition, the holding unit 3 may be formed separately from the main body unit 2 and then fixed to the main body unit 2 by a method such as screwing. Further, the plate-like portion 3a may not have a surface on the opposite side to the facing surface 3b that is parallel to the facing surface 3b.

  In the embodiment described above, if the main body portion 2 and the holding portion 3 are made of a material that is not easily deformed, a circular hole that penetrates the pair of plate-like portions 3a or the opposing surfaces 3b of the pair of plate-like portions 3a. It may have a shape other than the formed hemispherical recess. For example, the rotation holding part 3c may be a square hole that penetrates the pair of plate-like parts 3a.

  In the embodiment described above, for example, the number of through holes 4e for bonding of the attachment member 4 may be further increased. That way, a larger anchor effect can be expected. Further, in the third modified example described above, the number of bonding recesses 44e of the attachment member 44 may be further increased.

  In the above-described embodiment, for example, the shape of the bonding through-hole 4e of the attachment member 4 is not a columnar shape, but may be a shape in which a plurality of hexagonal column-shaped through-holes are arranged next to each other to form a so-called honeycomb structure. Absent. Further, the shape of the bonding through-hole 4e of the attachment member 4 may be an elongated slit. Even with the bonding through hole 4e having such a shape, an anchor effect can be expected, and the bonding strength can be improved. In the above-described third modification, for example, the shape of the bonding recess 44e of the attachment member 44 may not be a columnar shape but may be a hexagonal column shape or a slit shape. The shape of the bonding recess 44e of the mounting member 44 may be a groove formed along the mounting surface 44d.

DESCRIPTION OF SYMBOLS 1 Tire pressure detection apparatus 2 Main-body part 2a Holding part formation surface 3 Holding part 3a Plate-shaped part 3b Opposite surface 3c Rotation holding part 4 Attachment member 4a Rod part 4b Spherical part 4c Attachment part 4d Attachment surface 4e Bonding through-hole 10 Tire 11 Tire wheel 11a Rim 11b Outer peripheral surface 11c Mounted position 12 Rotating shaft 13 Adhesive 22 Main body portion 22a Holding portion forming surface 23 Holding portion 23a Plate-like portion 23b Opposing surface 23c Rotating holding portion 32 Main body portion 32a Holding portion forming surface 32b Groove portion 33 Holding part 33a Plate-like part 33b Opposing surface 33c Rotation holding part 44 Mounting member 44a Rod part 44b Spherical part 44c Mounting part 44d Mounting surface 44e Adhesive recess

Claims (3)

A main body for storing detection means for detecting tire information; two holding portions formed at predetermined intervals in the main body; and mounting members respectively held by the two holding portions. ,
The attachment member includes a rod-like rod portion, a spherical portion formed at one end of the rod portion, and an attachment portion formed at the other end of the rod portion and attached to a mounted position on the tire side. And
The attachment portion has an attachment surface inclined with respect to the longitudinal direction of the rod portion,
The holding part is composed of a pair of plate-like parts,
The pair of plate-like portions are opposed so as to sandwich the one end side of the rod portion of the attachment member,
In the pair of plate-like portions, a rotation holding portion that rotatably holds the spherical portion of the attachment member is formed,
The mounting member is rotatable along the pair of plate-like portions with the spherical portion serving as a fulcrum, and is rotatable around the axis about the longitudinal direction of the rod portion. Air pressure detection device. The rotation holding part is a round hole penetrating the pair of plate-like parts, or a hemispherical concave part formed on an opposing surface of the pair of plate-like parts,
The tire pressure detection device according to claim 1. The mounting surface is formed with an adhesive through hole or an adhesive recess capable of being filled with an adhesive,
The tire pressure detection device according to claim 1 or 2.