JP4673776B2 - Key unit - Google Patents

Description

  The present invention relates to a mechanical key formed by coupling a key head provided with a circular support hole at one end of a key plate that can be inserted into a cylinder lock, a support member having a support shaft fitted in the support hole, and the above-mentioned A storage position for storing the whole of the mechanical key and a protruding position for projecting the key plate, as a part of the constituent elements, and a sandwiching member fastened to the support member with the key head sandwiched between the support member A holding case that rotatably supports the key head so that the mechanical key can be rotated, and a resilient force that urges the mechanical key toward the side from which the key plate protrudes. And a torsion spring having one end engaged with the key head and the other end engaged with a spring locking portion provided on the clamping member. That on the key unit.

Such a key unit is already known from Patent Document 1, for example, and the key plate of the mechanical key is projected from the gripping case by the elastic force of a torsion spring.
JP-A-63-1110377

  By the way, the key head of the mechanical key is supported between the support member and the clamping member fastened to the support member, and is supported between the support member and the support member. In addition, when the clamping member is assembled to the support member, it must be fastened to the support member against the spring force of the torsion spring. For this reason, it is necessary for an expert to perform the assembly work, special tools are required, and the number of work steps is also increased.

  The present invention has been made in view of such circumstances, and allows the clamping member to be fastened to the support member by a simple assembling work that does not require special tools or skilled workers, and also reduces the number of work steps. An object is to provide a key unit that is made possible.

  In order to achieve the above object, the invention according to claim 1 is characterized in that a mechanical key formed by coupling a key head provided with a circular support hole at one end of a key plate which can be inserted into a cylinder lock, and the support hole A support member having a support shaft to be fitted and a clamping member fastened to the support member with the key head sandwiched between the support member and the mechanical key as a whole are stored. A holding case for supporting the key head by allowing the mechanical key to be rotated between a storing position for the key plate and a protruding position for protruding the key plate; and biasing the mechanical key to the side on which the key plate protrudes A spring locking portion having one end engaged with the key head so as to exert a resilient force and the other end provided on the clamping member In the key unit including the torsion spring to be engaged, a support cylinder portion that is fitted to and connected to the distal end portion of the support shaft is provided integrally with the clamping member, and the key head is provided around the support shaft. The other end of the torsion spring in a natural state in which the spring force is not exerted with one end engaged with the support member is engaged with the spring locking portion of the clamping member that is not fastened with the support member. A spring engagement position and a fastening position in which the clamping member engaged with the torsion spring in the spring engaging portion is rotated by a predetermined amount to the side that exerts a resilient force on the torsion spring is set. A positioning restriction portion that contacts the holding member rotated from the spring engagement position to the fastening position around the axis of the support shaft is provided on the support member, and the holding member in a state of contact with the positioning restriction portion is the Fastened to the support member The features.

  According to a second aspect of the invention, in addition to the configuration of the first aspect of the invention, the support member and the holding member have a spring force for urging the holding member toward the side away from the support member. In the state in which the clamping member is in the fastening position, contact surfaces that contact each other so as to be received in a direction in which they are pressed against each other are formed along a plane perpendicular to the axis of the support shaft, respectively. .

  The lower case 27 of the embodiment corresponds to the support member of the present invention, and the upper case 28 of the embodiment corresponds to the clamping member of the present invention.

  According to the first aspect of the present invention, the support shaft of the support member is fitted into the support hole of the key head, and the other end of the torsion spring in a natural state is engaged with the key head. The support cylinder is fitted and connected to the tip, and is engaged with the spring engaging portion of the holding member disposed at the spring engaging position, and the torsion spring exerts the elastic force from the spring engaging position. If the support member reaches the fastening position and is twisted so that the torsion spring exerts a predetermined elastic force when it is rotated around the support shaft and brought into contact with the positioning restricting portion. Since the clamping member can be fastened to the support member in this state, the clamping member can be fastened to the support member by a simple assembling work that does not require special tools or skilled workers. It is possible to reduce the number of work steps.

  According to the second aspect of the present invention, when the holding member is rotated until it comes into contact with the positioning restricting portion, the contact surfaces of the support member and the holding member are pressed against each other by the spring force acting on the holding member. Therefore, even if the hand is released from the pinching member due to the frictional force generated by the pressure contact between the contact surfaces, the pinching member does not return from the fastening position to the spring engagement position side, and therefore the assembling work becomes easier.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.

  1 to 20 show an embodiment of the present invention. FIG. 1 is a side view of a key unit in a state where the mechanical key is in the protruding position, and FIG. 2 is a state in which the mechanical key is in the retracted position. 3 is a side view of the key unit, FIG. 3 is a view as seen from the direction of the arrow 3 in FIG. 2, FIG. 4 is a side view of the mechanical key as viewed from the side opposite to FIG. Is a longitudinal side view showing a state in which the mechanical key is inserted into the cylinder lock, FIG. 7 is an exploded perspective view of the key unit, FIG. 8 is a sectional view taken along line 8-8 in FIG. 1, and FIG. FIG. 10 is a side view showing a part of the module case in a state where the lower case is insert-joined, and FIG. 11 is a cross-sectional view showing a state of the module case during molding along the line 11-11 in FIG. FIG. 12 shows the state of the module case during molding, taken along line 12-12 in FIG. 13 is a perspective view of the upper case, FIG. 14 is a side view showing a state in which the mechanical key is rotatably supported on the support shaft, and FIG. 15 is a sectional view taken along line 15-15 in FIG. 16 is a cross-sectional view taken along line 16-16 in FIG. 15, FIG. 17 is a side view showing a state where the upper case is in the spring engagement position, and FIG. 18 is a view in a state where the upper case rotated to the fastening position is fastened to the lower case. FIG. 19 is a sectional view taken along line 19-19 of FIG. 18, and FIG. 20 is a sectional view taken along line 20-20 of FIG.

  First, in FIGS. 1 to 3, the key unit 11 can be rotated between a mechanical key 12, a storage position for storing the entire mechanical key 12, and a protruding position for projecting a part of the mechanical key 12. A gripping case 13 that supports the mechanical key 12 is provided.

  4 and 5, the mechanical key 12 includes a metal key plate 15 and a key head 16 coupled to one end of the key plate 15, and the key head 16 insert-connects one end of the key plate 15. In this way, it is formed of a synthetic resin. Moreover, the key head 16 is provided with a rectangular accommodating recess 17 extending long in parallel with the longitudinal direction of the key plate 15 so as to open on one side of the key head 16. Further, recesses 19, 19 connected to one end in the width direction at both longitudinal ends of the housing recess 17 are provided in the key head 16 so as to be shallower than the housing recess 17.

  The accommodating recess 17 accommodates the transponder 14, and the lid member 21 is bonded to the key head 16 so as to hold the transponder 14 in the accommodating recess 17. Thus, the lid member 21 integrally includes a lid portion 21a that covers the housing concave portion 17, and a pair of protrusions 21b and 21b that are continuous with the lid portion 21a so as to be fitted in the concave portions 19. is there.

  By the way, the key head 16 of the mechanical key 12 has a storage position (the position shown in FIGS. 2 and 3) for storing the entire mechanical key 12, and a protruding position (in FIG. The key plate 15 that is supported by the gripping case 13 so as to be pivoted between the gripping case 13 and projecting from the gripping case 13 is shown in FIG. It is inserted into the key hole 25 of the cylinder lock 24 that switches between locking and unlocking the handle and switching the engine on and off. Thus, when the key plate 15 is inserted into the key hole 25, the transponder 14 transmits a specific ID signal in response to the electromagnetic force from the coil 26 provided at the front end of the cylinder lock 24, and the ID code is preset. The key unit 11 can start the engine in accordance with confirmation on the cylinder lock 24 side that the ID code matches.

  Referring also to FIGS. 7 to 9, the gripping case 13 is formed of a lower case 27 made of a light metal such as a metal such as a zinc alloy and a light metal such as a metal such as a zinc alloy. The upper case 28 to be joined in the above, the module case 29 formed of synthetic resin by insert-joining a part of the lower case 27 to one end portion, and the module case 29 being ultrasonically welded so as to cover the upper case 28. A cover 30 made of synthetic resin and a module cover 31 made of synthetic resin that is elastically engaged with the cover 30 and the module case 29 and fastened to the module case 29 with a screw member 33 are provided.

  Referring also to FIG. 10, the lower case 27 includes a flat board 27 a, a cylindrical support shaft 27 b that is connected to the board 27 a at a right angle and protrudes toward the upper case 28, and an arc-shaped cross-sectional shape. And a connecting wall portion 27c surrounding a part of the support shaft 27b, and the substrate 27a is insert-coupled to the inner surface side of the module case 29.

  By the way, in the mold forming of the module case 29, as shown in FIGS. 11 and 12, the first mold 81 for forming the outer surface side of the module case 29 and the inner surface side of the module case 29 are formed. A second mold 82 that can be moved close to and away from the first mold 81 so as to contact the substrate 27a of the lower case 27 is used. In order to determine the position of the lower case 27 in a direction perpendicular to the axis of the support shaft 27b, fitting recesses 82a and 82b for fitting the support shaft 27b and the connecting wall portion 27c are provided.

  In addition, the second mold 82 includes a slide mold 84 that engages with an engagement hole 83 provided in the support shaft 27b to determine the position of the lower case 27 along the axial direction of the support shaft 27b. 27b can be moved in the radial direction.

  Referring also to FIG. 13, the upper case 28 has a support tube portion 28 a that protrudes toward the lower case 27 and fits to the tip end portion of the support shaft 27 b, and a support tube portion that has an arcuate cross-sectional shape. A connecting wall portion 28b surrounding a part of 28a is integrally provided.

  Thus, the upper case 28 is screwed to the connecting wall portion 27c of the lower case 27 in a state in which the support cylinder portion 28a is fitted to the tip end portion of the support shaft 27b and the connecting wall portions 27c and 28b are in contact with each other. 32...

  The support shaft 27 b and the support cylinder portion 28 a that are fitted and connected to each other pass through a support hole 48 provided in the center portion of the key head 16 in the mechanical key 12, and between the lower case 27 and the upper case 28. The key head 16 to be sandwiched rotates around the axes of the support shaft 27b and the support cylinder portion 28a inside the connection wall portions 27c and 28b in a connected state.

  Further, the cover 30 is provided with a window 35 corresponding to the upper end opening of the support cylinder portion 28 a in the upper case 28, and the cover 30 is positioned in the module case 29 while being positioned with respect to the module case 29. Ultrasonic welding.

  Between the one end of the module case 29 and the cover 30, an opening 39 for projecting the key plate 15 of the mechanical key 12 faces a part of the outer periphery of the key head 16 when the mechanical key 12 is stored. In order to store the mechanical key 12 in the gripping case 13, a slit-like opening 40 that opens to the side of the gripping case 13 and continues to the opening 39 is formed in the module case 29, the cover 30 and the module cover 31.

  A release button 41 formed in a bottomed cylindrical shape is inserted into the support shaft 27b and the support cylinder portion 28a so that the upper hemispherical closed portion faces the window 35 so as to be movable up and down. Between the lower case 27 and the release button 41, a coil spring 42 that biases the release button 41 upward, that is, the side that separates the release button 41 from the lower case 27 is provided in a compressed manner.

  Referring also to FIG. 14, first and second restricting protrusions 43 and 44 projecting outward along the one diameter line are integrally provided on the outer periphery of the release button 41 on the lower case 27 side. The Further, the support shaft 27b of the lower case 27 is provided with first and second restricting holes 45 and 46 extending in a slit shape in the axial direction, and the restricting protrusions 43 and 44 are provided in the restricting holes 45 and 46, respectively. By fitting, the support button 27b and the release button 41 inserted into the support tube portion 28a are allowed to move in the axial direction within a limited range, and within the support shaft 27b and the support tube portion 28a. The release button 41 is prevented from rotating.

  A positioning protrusion 86 is provided on the outer periphery of the release button 41 between the restricting protrusions 43 and 44, and the positioning protrusion 86 is slidably fitted on the inner periphery of the support shaft 27b. A joint groove 87 is provided so as to extend in the axial direction. Thus, by fitting the positioning protrusion 86 into the fitting groove 87, the relative position of the support shaft 27b and the release button 41 around the axis of the support shaft 27b is fixed.

  A support hole 48 into which the support shaft 27b is fitted is provided at the center of the key head 16 in the mechanical key 12, and the side surface on the upper case 28 side surrounding the tip end portion of the support shaft 27b and the support cylinder portion 28a. A spring accommodating hole 47 having an opening at one end is provided with a diameter larger than that of the support hole 48 so as to be coaxially connected to one end of the support hole 48. An annular step 49 facing the side is formed.

  Between the step portion 49 and the upper case 28, a torsion spring 50 surrounding the support shaft 27b and the support cylinder portion 28a is disposed so as to be accommodated in the spring accommodating hole 47, and both ends of the torsion spring 50 are arranged. Is engaged with the upper case 28 and the key head 16. Thus, the torsion spring 50 exerts a spring force that urges the key head 16, that is, the mechanical key 12 in the direction of rotating from the retracted position to the protruding position.

  Thus, the engaging portion 50a provided at one end of the torsion spring 50 is a surface facing the upper case 28 side of the key head 16 so as to open to the inner surface of the spring accommodating hole 47 as clearly shown in FIG. Is engaged with a locking hole 51 provided in the. As shown in FIGS. 7 and 13, the upper case 28 is provided with a groove-like spring locking portion 28 c that engages an engaging portion 50 b provided at the other end of the torsion spring 50.

  Referring also to FIG. 15, the key head 16 has a first insertion hole 52 having a diameter larger than that of the support hole 48 with one end connected to the other end of the support hole 48 coaxially. An annular stepped portion 53 capable of contacting the second restricting projections 43 and 44 is formed between the support hole 48 and coaxially so as to surround the support shaft 27b. The other end of the insertion hole 52 is a key. The head 16 opens on the side surface opposite to the upper case 28. Further, when the mechanical key 12 is rotated between the retracted position and the protruding position, the first regulating protrusion 43 having the tip protruding from the support shaft 27b is allowed to rotate relative to the key head 16. Is formed in the key head 16 so as to expand a part of the inner periphery of the insertion hole 52 in the diameter-enlarging direction, and between the insertion hole 52 and the guide recess 54, An arcuate slidable contact step portion 55 is formed to slidably contact the first restricting protrusion 43.

  In addition, one end in the circumferential direction of the guide recess 54 is formed as a first restriction surface 57 that abuts the protrusion 56 that protrudes at a position adjacent to the first restriction hole 45 on the outer periphery of the support shaft 27b. The rotation end of the mechanical key 12 that is biased by the torsion spring 50 toward the protruding position side toward the protruding position side is regulated by bringing the first regulating surface 57 into contact with the protruding portion 56 of the support shaft 27b. As shown in FIG. 16, the sliding contact step 55 near the first restricting surface 57 is provided with a first fitting recess 58 for fitting the first restricting protrusion 43, and the first restricting step 57. When the surface 57 is brought into contact with the projecting portion 56 of the support shaft 27b and the mechanical key 12 is in the projecting position so that an external force is not applied to the release button 41, the release biased by the coil spring 42 is applied. The first restricting protrusion 43 of the button 41 is fitted into the first fitting recess 58, whereby the posture of the mechanical key 12 at the protruding position is maintained. In addition, the end wall on the opposite side of the first restricting surface 57 among the both end walls in the circumferential direction of the first fitting recess 58 is formed to be inclined so as to function as the cam surface 58a.

  The other circumferential end of the guide recess 54 is formed as a second restriction surface 59 with which the first restriction projection 43 abuts at the storage position of the mechanical key 12, and abuts against the second restriction surface 59. A second fitting recess 60 for fitting the first restricting protrusion 43 is provided at the other circumferential end of the sliding contact step portion 55. That is, when the second restricting surface 57 is brought into contact with the first restricting protrusion 43 and the mechanical key 12 is in the retracted position so that an external force is not applied to the release button 41, the second restricting surface 57 is biased by the coil spring 42. The first restricting projection 43 of the release button 41 is fitted into the second fitting recess 60, whereby the posture of the mechanical key 12 at the retracted position is maintained.

  Thus, when the mechanical key 12 is rotated from the retracted position to the projecting position side, the release button 41 facing the window 35 may be released against the spring force of the coil spring 42 and then released. The key head 16 of the mechanical key 12 is automatically rotated to the protruding position side by the spring force of the torsion spring 50 while the first restricting protrusion 43 separated from the fitting recess 60 is in sliding contact with the sliding contact step 55. Thus, at the projecting position, the release button 41 is pushed out by the coil spring 42 so as to fit the first restricting protrusion 43 into the first fitting recess 58, and the first fitting recess 58 of the first restricting protrusion 43. As a result, the posture of the mechanical key 12 at the protruding position is maintained.

  When the mechanical key 12 is rotated from the protruding position to the retracted position side, the release button 41 facing the window 35 may be pushed against the spring force of the coil spring 42 at the initial stage of the rotating operation, and then the first fitting is performed. The first restricting protrusion 43 separated from the recess 58 can be manually rotated to the retracted position while slidably contacting the sliding contact step 55, and the release button 41 moves the first restricting protrusion 43 at the retracted position. It is pushed out by the coil spring 42 so as to fit in the second fitting recess 60, and the posture of the mechanical key 12 in the retracted position is maintained by fitting the first restricting protrusion 43 into the second fitting recess 60. . Further, it is possible to apply a force to the key plate 15 of the mechanical key 12 to turn to the storage position side without pushing the release button 41, so that the first fitting recess 58 is fitted. The release button 41 is moved to the pushing side against the spring force of the coil spring 42 so that the first regulating projection 43 climbs the cam surface 58 a, and the first regulating projection 43 is detached from the first fitting recess 58. Therefore, the mechanical key 12 can be turned to the storage position side.

  Moreover, in a natural state where no external force is applied to the release button 41, the first and second restricting protrusions 43 and 44 of the release button 41 that are elastically biased by the coil spring 42 toward the protruding position are the key heads of the mechanical key 12. By abutting against the key 16, the key head 16 is elastically biased so as to be in sliding contact with the upper case 28.

  In assembling the upper case 28 to the lower case 27, first, a mechanical key in which a coil spring 42 and a release button 41 are attached to a support shaft 27b of the lower case 27 and the support shaft 27b is inserted into a support hole 48 of the key head 16 is provided. 12 is arranged at the protruding position, and the support cylinder portion 28a of the upper case 28 is engaged with the engagement portion 51 of the one end side engagement portion 50a of the torsion spring 50 accommodated in the spring accommodation hole 47 of the key head 16. The upper case 28 is arranged at the spring engagement position shown in FIG. 17 while fitting and connecting to the support shaft 27b, and the engagement portion 50b at the other end of the torsion spring 50 in a natural state where no external force is applied. Engage with the spring locking portion 28c.

  Next, the upper case 28 that is in contact with the key head 16 that is elastically biased by the coil spring 42 is pressed against the spring force of the coil spring 42 to the fastening position shown in FIG. The connecting wall portion 28b of the upper case 28 is brought into contact with the connecting wall portion 27c of the lower case 27 by rotating by a predetermined amount around the axis of 27b.

  Thus, the torsion spring 50 is wound on the side exhibiting elastic force by the rotation of the upper case 28 from the spring engagement position to the fastening position, and the connecting wall portion of the lower case 27 27c is provided with a positioning restricting portion 27d that abuts the contact surface 28d provided on the upper case 28 when the upper case 28 rotates to the fastening position. The abutting position of the upper case 28 is determined by bringing the abutting surface 28d into contact with the positioning restricting portion 27d.

  By the way, as long as the release button 41 is not pressed, the key head 16 is elastically in contact with the upper case 28, and the upper case 28 is subjected to a resilient force acting on the side away from the lower case 27. However, when the upper case 28 is in the fastening position, as shown in FIG. 19, the contact surfaces 88 and 89 are in contact with each other so as to receive the elastic force acting on the upper case 28 in a direction in which they are pressed against each other. Are formed on the connecting wall portion 27c of the lower case 27 and the connecting wall portion 28b of the upper case 28 so as to be along a plane orthogonal to the axis of the support shaft 27b. That is, the connecting wall portion 27c of the lower case 27 is integrally provided with a protruding portion 27e protruding outward, and the connecting wall portion 28b of the upper case 28 has a substrate 27a of the lower case 27 when the upper case 28 is in the fastening position. Protrusions 28e facing the protrusions 27e from the side are integrally provided, and opposing surfaces of the protrusions 27e and 28e are formed as the contact surfaces 88 and 89, respectively.

  A plurality of, for example, a pair of screw holes 90 are provided in the connecting wall portion 27c of the lower case 27, and the screw holes are formed in the connecting wall portion 28b of the upper case 28 with the upper case 28 in the fastening position. There are provided through holes 91. Thus, the upper case 28 is fastened to the lower case 27 by screwing the screw members 32... Inserted into the insertion holes 91... Into the screw holes 90. .

  With particular attention to FIG. 7, a keyless module 62 is accommodated between the module case 29 and the module cover 31, and the keyless module 62 accommodates the key plate 15 of the mechanical key 12 in the storage position. A recess 61 for forming a space with the module case 29 is formed facing the module case 29 side.

  The keyless module 62 includes a locking button 65, an unlocking button 66, and a panic button 67. When the locking button 65 is pressed, the keyless module 62 outputs a signal for automatically locking the door locking mechanism provided in the automobile. By pressing the lock button 66, a signal for automatically releasing the door lock mechanism is output, and by pressing the panic button 67, a signal for encouraging an alarm operation on the vehicle side is output. The buttons 65, 66, and 67 are arranged facing windows 68, 69, and 70 provided on the module cover 31.

  The module cover 31 is engaged with the cover 30 and elastically engaged with the module case 29. The module cover 31 has an end opposite to the protruding side of the mechanical key 12 and is attached to the module case 31. A mounting leg 74 projecting to the 29 side is integrally projected. On the other hand, a metal nut 75 is attached to the module case 29 so as to face the tip of the mounting leg 74, and a screw member 33 inserted into the module case 29 and the tip of the mounting leg 74 is provided. Screwed onto the nut 75.

  Referring also to FIG. 20, a metal holder ring 71 for connecting a key holder (not shown) between the module case 29 and the module cover 31 on the side opposite to the projecting side of the mechanical key 12 is large. The portion is clamped so as to protrude from the gripping case 13.

  In addition, one of the module case 29 and the module cover 31, in this embodiment, the module cover 31 is provided with a plurality of, for example, a pair of bottomed fitting holes 92, 92, and the holder ring 71 has both the fitting holes. The fitting projections 93, 93 that are respectively fitted to 92 ... are projected integrally.

  The holder ring 71 is provided with a plurality of, for example, a pair of engagement holes 94, 94. The module cover 31 has engagement claws 95, 95 that elastically engage with the engagement holes 94. Is integrally projected.

  Next, the operation of this embodiment will be described. The mechanical key 12 is formed by connecting a key head 16 to one end of a key plate 15 that can be inserted into the cylinder lock 24. Is supported by the gripping case 13 so as to be able to rotate between a storage position for storing the entire mechanical key 12 and a projecting position for projecting the key plate 15, but a specific ID code is provided on the cylinder lock 24 side. A transponder 14 for transmitting a signal is built in the key head 16.

  Therefore, even when the mechanical key 12 is dropped from the gripping case 13 due to damage or the like, since the transponder 14 is built in the key head 16 of the mechanical key 12, the mechanical key 12 alone is connected to the cylinder lock 24. The engine can be started only with the mechanical key 12.

  Further, the other end of the torsion spring 50 in a natural state in which one end is engaged with the key head 16 of the mechanical key 12 and does not exert a spring force is provided around the support shaft 27b provided in the lower case 27 with the lower case 27. The spring engagement position in which the upper case 28 in the non-fastened state is engaged with the spring engagement portion 28c and the upper case 28 in which the torsion spring 50 is engaged with the spring engagement portion 28c are elastically applied to the torsion spring 50. A fastening position rotated by a predetermined amount on the side that exerts a force is set, and a positioning restriction portion that contacts the upper case 28 rotated from the spring engagement position to the fastening position around the axis of the support shaft 27b. 27 d is provided on the connecting wall portion 27 c of the lower case 27.

  Therefore, the support shaft 48 of the lower case 27 is fitted into the support hole 48 of the key head 16 and one end of the support shaft 48 is engaged with the key head 16 so that the other end of the torsion spring 50 is in a natural state at the tip of the support shaft 27 b. With the support cylinder portion 28a fitted and connected, it engages with the spring locking portion 28c of the upper case 28 arranged at the spring engagement position, and the torsion spring 50 exerts the elastic force from the spring engagement position. When the lower case 27 reaches the fastening position and the torsion spring 50 exerts a predetermined elastic force when it is rotated about the support shaft 27b so as to be twisted toward the exerting side and brought into contact with the positioning restricting portion 27d. Since the upper case 28 is fastened to the lower case 27 in this state, the upper case can be easily assembled without requiring a special tool or a skilled worker. 8 can be fastened to the lower case 27, also becomes possible reduction of man-hours.

  In addition, the lower case 27 and the upper case 28 receive the spring force of the coil spring 42 in a direction in which the upper case 28 urged toward the side away from the lower case 27 is in pressure contact with each other in the state of being in the fastening position. Since the contact surfaces 88 and 89 that contact each other are formed along a plane perpendicular to the axis of the support shaft 27b, the upper case 28 is rotated when the upper case 28 is rotated until it contacts the positioning restricting portion 27d. The abutting surfaces 88 and 89 of the lower case 27 and the upper case 28 are pressed against each other by the spring force acting on the upper case 28, and the hand is released from the upper case 28 by the frictional force generated by the pressing of the abutting surfaces 88 and 89. However, the upper case 28 does not return from the fastening position to the spring engagement position side, and therefore the assembling work becomes easier.

  The metal holder ring 71 sandwiched between the module case 29 and the module cover 31 is integrally provided with fitting protrusions 93 that respectively fit in a pair of fitting holes 92 provided in the module cover 31. Further, for example, engaging claws 95 that are elastically engaged with a pair of engaging holes 94 provided in the holder ring 72 are projected integrally with the module cover 31, so that the engaging claws 95 of the module cover 31. Are elastically engaged with the engagement holes 94 of the holder ring 71 and the fitting projections 93 of the holder ring 71 are fitted to the fitting holes 92 of the module cover 31. Are held so that the holder ring 71 is sandwiched between the module case 29 and the module cover 31. It will be attached.

  Moreover, since the holder ring 71 can be temporarily assembled to the module cover 31 by the elastic engagement of the engagement claws 95 to the engagement holes 94, the assembly is facilitated, and the holder ring 71 is provided. Since the pair of fitting protrusions 93 are fitted in the fitting holes 92 of the module cover 31, even if an external force is applied to the holder ring 71, the external force is dispersed at a plurality of locations and the holder ring 71 It will act on the attachment location to the gripping case 13, and the assembly strength can be increased.

  Furthermore, the lower case 27 has a substrate 27a that is insert-coupled to the inner surface side of the module case 29, and a support shaft 27b that is connected to the substrate 27a at a right angle. When the lower case 27 is insert-coupled to the module case 29, A lower case along the axial direction of the support shaft 27b by engaging the support shaft 27b with a mold 82 for molding the inner surface side of the module case 29 while determining the position of the lower case 27 in a direction orthogonal to the axis of the support shaft 27b. A slide mold 84 that determines the position of the shaft 27 is disposed so as to be movable in the radial direction of the support shaft 27b.

  Therefore, when the board 27a of the lower case 27 is insert-coupled to the inner surface side of the module case 29, the position of the lower case 27 in the direction along the axis of the support shaft 27b, that is, in the thickness direction of the module case 29 is fixed by the slide mold 84. Therefore, the lower case 27 does not move due to the resin pressure at the time of molding the module case 29, and the position of the lower case 27 in the thickness direction of the module case 29 can be determined with certainty. The outer surface of the case 29 can be a stable and reliable design surface.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. It is.

It is a side view of a key unit in the state where a mechanical key exists in a protrusion position. It is a side view of a key unit in the state where a mechanical key exists in a storing position. FIG. 3 is a view taken in the direction of arrow 3 in FIG. 2. It is the side view which looked at the mechanical key from the opposite side to FIG. FIG. 5 is a sectional view taken along line 5-5 of FIG. It is a vertical side view which shows the state which inserted the mechanical key in the cylinder lock. It is a disassembled perspective view of a key unit. FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 1. FIG. 9 is an enlarged view of a portion indicated by an arrow 9 in FIG. 8. It is a side view which shows a part of module case of the state where the lower case was insert-joined. It is sectional drawing which shows the state at the time of metal mold | die molding of a module case along the 11-11 line of FIG. It is sectional drawing which shows the state at the time of metal mold | die molding of a module case along the 12-12 line of FIG. It is a perspective view of an upper case. It is a side view which shows the state which supported the mechanical key on the spindle so that rotation was possible. FIG. 15 is a cross-sectional view taken along line 15-15 in FIG. 9. FIG. 16 is a cross-sectional view taken along line 16-16 in FIG. 15. It is a side view which shows the state which has an upper case in a spring engagement position. FIG. 18 is a partially cutaway side view corresponding to FIG. 17 in a state where the upper case rotated to the fastening position is fastened to the lower case. FIG. 19 is a cross-sectional view taken along line 19-19 in FIG. 18. FIG. 20 is a sectional view taken along line 20-20 in FIG. 1.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Key unit 12 ... Mechanical key 13 ... Holding case 15 ... Key plate 16 ... Key head 24 ... Cylinder lock 27 ... Lower case 27b as support member ... Support Shaft 27d ... Positioning restricting part 28 ... Upper case 28a as a clamping member ... Supporting cylinder part 28c ... Spring locking part 48 ... Support hole 50 ... Torsion spring 88, 89 ...・ Contact surface

Claims (2)

  A mechanical key (12) in which a key head (16) provided with a circular support hole (48) is coupled to one end of a key plate (15) that can be inserted into the cylinder lock (24), and the support hole (48). And a support member (27) having a support shaft (27b) fitted to the support member (27) and a clamping member fastened to the support member (27) with the key head (16) interposed between the support member (27) and the support member (27). (28) as a part of the constituent elements, and the mechanical key (12) is rotated between a storage position for storing the entire mechanical key (12) and a protruding position for protruding the key plate (15). A gripping case (13) that supports the key head (16) and the mechanical key (12) are biased toward the side from which the key plate (15) protrudes. A torsion spring (50) having one end engaged with the key head (16) and the other end engaged with a spring locking portion (28c) provided on the clamping member (28) so as to exert a generating force. ) Is provided integrally with a support cylinder portion (28a) fitted and connected to the tip end portion of the support shaft (27b) on the clamping member (28). Around the other end, the other end of the torsion spring (50) in a natural state in which one end is engaged with the key head (16) and does not exert a spring force is not fastened to the support member (27). A spring engagement position in which the pinching member (28) is engaged with the spring locking portion (28c), and the pinching in which the torsion spring (50) is engaged with the spring locking portion (28c). The member (28) is bounced to the torsion spring (50). The fastening position rotated by a predetermined amount is set on the side where the force is exerted, and is applied to the clamping member (28) rotated from the spring engagement position to the fastening position around the axis of the support shaft (27b). A positioning restricting portion (27d) in contact with the supporting member (27) is provided, and the clamping member (28) in contact with the positioning restricting portion (27d) is fastened to the support member (27). A key unit.   In the support member (27) and the clamping member (28), the clamping member (28) has a spring force that biases the clamping member (28) toward the side away from the support member (27). In this state, the contact surfaces (88, 89) that contact each other so as to be received in the direction in which they are pressed against each other are formed along a plane perpendicular to the axis of the support shaft (27b). The key unit according to claim 1.

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