1. An ignition device attachment structure for an internal combustion engine, comprising:
an ignition plug tube inserted between a cylinder head cover and an ignition device insertion hole formed in a cylinder head of the internal combustion engine,
wherein the ignition plug tube has a first bulging portion bulging from an upper end of the ignition plug tube to an intermediate portion of the ignition plug tube on a first lateral surface of the ignition plug tube, and a second bulging portion bulging from the upper end of the ignition plug tube to an upper-intermediate portion of the ignition plug tube on a second lateral surface of the ignition plug tube, and the first bulging portion extends longer from the upper end of the ignition plug tube than the second bulging portion does.
2. The ignition device attachment structure according to claim 1, wherein an upper end portion of the ignition plug tube is provided with a flange portion holding a seal member, and sealing is provided between an upper surface of the seal member and a lower surface of the cylinder head cover in contact with the upper surface of the seal member.
3. The ignition device attachment structure according to claim 2, wherein a valve train mechanism of the internal combustion engine is driven by a camshaft provided in a camshaft holder of the cylinder head, and the seal member is provided to vertically overlap the camshaft holder.
4. The ignition device attachment structure according to claim 3, wherein the flange portion is provided to partially overlap an attachment bolt of the camshaft holder at an overlapping portion of the flange portion, and the overlapping portion of the flange portion is notched.
5. The ignition device attachment structure according to claim 1, wherein a valve train mechanism of the internal combustion engine is driven by a rocker arm, and the ignition device insertion hole is provided to overlap a rocker arm shaft in an axial direction of the ignition device insertion hole.
6. The ignition device attachment structure according to claim 5, wherein the flange portion is provided to partially overlap an attachment bolt of the rocker arm shaft at an overlapping portion of the flange portion, and the overlapping portion of the flange portion is notched.
7. The ignition device attachment structure according to claim 2, wherein the seal member is located above the flange portion, and the flange portion urges the seal member against the lower surface of the cylinder head cover.
8. The ignition device attachment structure according to claim 2, wherein the flange portion extends from the upper end portion of the ignition plug tube outwardly in a radial direction of the ignition plug tube.
9. The ignition device attachment structure according to claim 1, wherein a circumference of the intermediate portion is non-circular.
10. An ignition device attachment structure for an internal combustion engine, comprising:
an ignition plug tube inserted between a cylinder head cover and an ignition device insertion hole formed in a cylinder head of the internal combustion engine,
wherein the ignition plug tube has an upper end portion, a lower end portion and an intermediate portion between the upper end portion and the lower end portion, a circumference of the upper end portion being larger than a circumference of the intermediate portion, and the circumference of the intermediate portion is non-circular, and
wherein the ignition plug tube has a first bulging portion bulging from the upper end of the ignition plug tube to the intermediate portion of the ignition plug tube on a first lateral surface of the ignition plug tube, and a second bulging portion bulging from the upper end of the ignition plug tube to an upper-intermediate portion of the ignition plug tube on a second lateral surface of the ignition plug tube, and the first bulging portion extends longer from the upper end of the ignition plug tube than the second bulging portion does.
11. The ignition device attachment structure according to claim 10, wherein the upper end portion of the ignition plug tube is provided with a flange portion holding a seal member, and sealing is provided between an upper surface of the seal member and a lower surface of the cylinder head cover in contact with the upper surface of the seal member.
12. The ignition device attachment structure according to claim 11, wherein a valve train mechanism of the internal combustion engine is driven by a camshaft provided in a camshaft holder of the cylinder head, and the seal member is provided to vertically overlap the camshaft holder.
13. The ignition device attachment structure according to claim 12, wherein the flange portion is provided to partially overlap an attachment bolt of the camshaft holder at an overlapping portion of the flange portion, and the overlapping portion of the flange portion is notched.
14. The ignition device attachment structure according to claim 10, wherein a valve train mechanism of the internal combustion engine is driven by a rocker arm, and the ignition device insertion hole is provided to overlap a rocker arm shaft in an axial direction of the ignition device insertion hole.
15. The ignition device attachment structure according to claim 14, wherein the flange portion is provided to partially overlap an attachment bolt of the rocker arm shaft at an overlapping portion of the flange portion, and the overlapping portion of the flange portion is notched.
16. The ignition device attachment structure according to claim 11, wherein the seal member is located above the flange portion and the flange portion urges the seal member against the lower surface of the cylinder head cover.
17. The ignition device attachment structure according to claim 10, wherein the flange portion extends from the upper end portion outwardly in a radial direction of the ignition plug tube.
18. The ignition device attachment structure according to claim 10, wherein a first portion of a circumferential surface of the intermediate portion is aligned with a circumferential surface of the upper end portion, and a second portion of the circumferential surface of the intermediate portion is aligned with a circumferential surface of the lower end portion.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An assembly for remotely controlling \u201chands-free\u201d multimedia andor telephony equipment incorporated in a motor vehicle, the assembly comprising:
a) a remote control unit comprising:
a visible face carrying control keys andor buttons;
a back face with a housing for a power supply battery; and
radio-frequency transmitter means for wirelessly transmitting control signals to the remote equipment; and
b) a removable cover separable from the unit and suitable for closing the housing and holding in place a power supply battery placed in the housing;
wherein the following are provided inside the housing of the remote control unit:
a central power supply contact and a peripheral power supply contact suitable for pressing against respective poles of the power supply battery inserted in the housing; and
signal transmission contacts located on the bottom of the housing for transmitting control signals by wire to the remote equipment; and
wherein it further comprises:
c) an active support comprising:
on a back face, fastener means for fastening to the dashboard of the vehicle;
on a front face, securing means for securing to the back face of the unit, and also a portion in relief suitable for penetrating into the housing in the unit to take the place of the power supply battery in the absence of the removable cover;
an electrical power supply line suitable for being connected to the on-board network of the vehicle;
a transmission line suitable for being connected to the remote equipment;
two power supply terminals connected to the power supply line and arranged on the portion in relief in a central position and in a peripheral position in such a manner as to press against the central and peripheral contacts respectively of the unit when the portion in relief is inserted and locked in the housing of the unit; and
signal transmission terminals placed on the portion in relief in positions corresponding to the transmission contacts of the unit when the portion in relief is inserted and locked in the housing of the unit.
2. The assembly of claim 1, wherein the signal transmission contacts comprise a diametrically opposite pair of contacts in the form of circular arcs, and wherein the control signals are transmitted by wire to the remote equipment by asynchronous serial transmission.
3. The assembly of claim 1, wherein the remote control unit incorporates:
detector means for detecting an established connection on the signal transmission contacts; and
means for deactivating the radio-frequency transmitter means on detecting said connection.
4. The assembly of claim 1, wherein the remote control unit incorporates:
backlighting means for backlighting the control keys andor buttons;
detector means for detecting an established connection on the power supply contacts with the on-board network of the vehicle; and
means for activating the backlighting means on detecting said connection.
5. The assembly of claim 1, wherein the means for locking the cover to the unit are bayonet fastener means suitable for enabling the cover to be put into place on the unit in an angularly offset position, and then enabling it to be locked by being turned through a fraction of a turn to a final, utilization position.
6. The assembly of claim 1, wherein the securing means for securing the active support to the unit are bayonet fastener means suitable for enabling the unit to be put into place on the active support in an angularly offset position, and then enabling it to be locked by being turned through a fraction of the turn to a final, utilization position.
7. The assembly of claim 1, further comprising:
d) a passive support comprising:
on its back face, fastener means for fastening to the dashboard of the vehicle; and
on its front face, securing means for securing to the back face of the unit provided with the power supply battery and the removable cover.
8. The assembly of claim 7, wherein said securing means comprise hooks suitable for reversibly co-operating with corresponding recesses formed in the removable cover andor in the back face of the unit.
9. The assembly of claim 8, wherein the securing means for securing the passive support, and the securing means for securing the active support to the back face of the unit each comprise respective hooks suitable for co-operating with the same recesses of the unit.
10. The assembly of claim 8, wherein the hooks and the corresponding recesses are configured in such a manner as to enable the unit to be put into place on the plate in an angularly offset position and then locked by being turned through a fraction of a turn to a final, holding position.