JP6579878B2 - Locking mechanism for operation member - Google Patents

Description

  The present invention relates to a locking mechanism for an operation member such as a rotating bezel used for a divers watch.

  In a portable watch, a bezel that is mounted on the trunk so as to be rotatable around the center line of the trunk, and has a concavo-convex structure at regular angular intervals along the circumferential direction, and a tip at the tip so as to give a click feeling when the bezel rotates. A portable timepiece with a rotating bezel, such as a divers watch, including a leaf spring mounted on a body portion so as to be elastically engageable with an uneven recess of the bezel is known.

In this type of portable watch, the bezel is provided with a scale in 60-minute increments in the circumferential direction. For example, the bezel is adjusted so that the origin of the bezel scale is aligned with the position of the pointer (for example, the minute hand) at the start of diving. Set and start diving. In this case, as for the dive time, the remaining time of the cylinder can be roughly visually recognized by reading the position of the minute hand of the clock on the scale of the bezel. In order to prevent an erroneous operation in water, a structure in which the bezel does not rotate in the forward direction of the watch is generally used. Further, there is a known prior art that has a mechanism for locking the rotation of the bezel so that the bezel once set does not rotate carelessly. (For example, Patent Document 1 and Patent Document 2)
FIG. 14 is a cross-sectional view showing the positional relationship between the bezel and the stopper in the rotation-permitted state of the rotary bezel device of the portable timepiece of Patent Document 1. The mechanism for locking the rotation of the bezel shown here is that the protrusion of the stopper 150 incorporated in the body 120 is pinched with a finger and the inclined surface 154 of the stopper 150 is inserted under the click spring 140 to engage the tip. The click spring 140 in which the joint portion 147 is engaged with the concave portion 166 of the bezel 100 eliminates room for escaping downward and locks the rotation of the bezel 100.

  FIG. 15 is a cross-sectional view showing the relationship between the locked bezel and the stopper in the rotary bezel device of Patent Document 2. In the mechanism for locking the rotation of the bezel shown here, a fixing pin 209 biased downward by a spring 210 is housed in a fixing ring 206 at the bottom of the rotating bezel 201. As the counterclockwise rotation operation is performed, the fixing pin 209 also moves counterclockwise. When the fixing pin 209 is pushed up by the ridge 211 of the body 204, the tip 209a of the pin 209 enters the recess 201a of the rotating bezel 201 and locks the rotation of the rotating bezel 201.

JP 2003-194968 (paragraph 0024, paragraph 0025, FIG. 3, FIG. 5) Japanese Utility Model Publication No. 51-83378 (3 pages 7 lines to 4 pages 5 lines, Fig. 7)

  However, in the prior art, in the lock mechanism disclosed in Patent Document 1, if the bezel is rotated with a strong force in a locked state in which the rotation of the bezel is locked, the click spring may be deformed and the bezel may rotate. Further, the lock mechanism of Patent Document 2 has a problem that a coil spring is required as a lock member and the structure is complicated.

The present invention has been made in order to solve such a conventional problem. The object of the present invention is to provide a locking mechanism for a rotating bezel that has a simple structure but provides a strong rotating bezel lock and is not easily broken. Is to provide.

In order to achieve the above-described object, the configuration of the present invention is such that an operation member capable of moving in a predetermined direction and a tooth formed by arranging a plurality of convex portions on the operation member are engaged in the predetermined direction. An operation member locking mechanism comprising: a restriction member for restricting movement; and a restriction operation member for operating the restriction member in a state in which the restriction member is not engaged with the tooth and a state in which the restriction member is engaged. The movement of the plurality of convex portions in the first direction along the arrangement direction pushes the non-facing surface of the restriction member to the teeth toward the teeth, and engages the restriction members with the teeth. The movement of the restricting action part in the second direction opposite to the first direction and the movement of the restriction member from the outside of the space required for the movement from the non-engagement state to the engagement state by the movement of the restriction member. A release action part that enters inside, and the restriction operating member is Depending manipulating serial to said second direction or operating in a first direction, the release action portion and the regulating action portion, alternatively the acts on the regulating member, one end or said of the regulating member A slope is formed on at least one of the end portions of the restricting action portion, and the slope provided on one end of the restricting member is cut off on the non-opposing surface side of the restricting member with respect to the teeth. Is a tapered slope, and the slope provided at the end of the restricting action portion is notched on the side facing the tooth in the restricting action portion, and the end of the restricting action portion is tapered. It is characterized by a slope of shape .

  According to the above configuration, there is no need for a return spring for returning the regulating member to a position where it is not regulated, and it is possible to perform a strong locking operation of the operating member while having a simple configuration, and also to provide a locking mechanism for the operating member that is not easily broken. The effect that it can comprise is acquired.

In addition, the configuration of the present invention for achieving the above-described object includes an operating member that can be operated to move in a predetermined direction, and teeth that are formed by arranging a plurality of convex portions on the operating member. An operation member locking mechanism comprising: a restriction member that restricts movement in a direction; and a restriction operation member that moves the restriction member between a state in which the restriction member is not engaged with a tooth and a state in which the restriction member is engaged. Is configured to push the non-facing surface of the restriction member facing the tooth toward the tooth by moving the plurality of convex portions in the first direction along the arrangement direction, and engage the restriction member with the tooth. A regulating action part that moves to a state and a movement in a second direction opposite to the first direction, the outside of the space required for the movement from the state in which the regulating member does not engage the tooth to the state in which it engages. A release action unit that enters the space, and the restriction operation Depending manipulating timber in the second direction or the operation to the first direction, the regulating action portion and the release acting portion acts on alternatively the regulating member, the other end of the regulating member Alternatively, an inclined surface is formed on at least one of the end portions of the releasing action portion, and the inclined surface provided on the other end portion of the restricting member is cut off on the surface facing the teeth in the restricting action portion. The inclined surface is tapered at the end, and the inclined surface provided at the end of the release action part is cut away on the non-opposing surface side of the release action part with respect to the teeth, so that the end of the release action part is It is a slope with a tapered shape .

In addition, the configuration of the present invention for achieving the above-described object can be operated in a predetermined direction.
An operation member, a restriction member that engages a tooth formed by arranging a plurality of convex portions on the operation member to restrict movement in the predetermined direction, and a state in which the restriction member is not engaged with the tooth. A locking mechanism for an operation member having a restriction operation member that is moved to a state of being combined, wherein the restriction operation member is moved in a first direction along an arrangement direction of the plurality of convex portions, and the restriction member By pressing the non-facing surface of the teeth in the tooth toward the teeth and moving the restricting member to engage with the teeth, and movement in the second direction opposite to the first direction, And a release action part that enters the space from outside the space required for the movement from the state where the restriction member does not engage the tooth to the state where it engages, and operates the restriction operation member in the first direction. Depending on whether to operate in the second direction or not The release acting portion acts on alternatively the regulating member, the regulating member is in a state which does not engage the teeth, the locking mechanism of the operating member is placed on the placing portion included in the The restricting action part is on the placement part, and the release action part is at a position separated from the placement part by a thickness more than the thickness of the restriction member .

  According to the present invention, there is no need for a return spring for returning the restricting member to a position where it is not restricted, and it is possible to perform a strong locking operation of the operating member while having a simple configuration, and to provide a locking mechanism for the operating member that is not easily broken. The effect that it can comprise is acquired.

It is a top view of a portable timepiece provided with the locking mechanism of the rotation bezel which is an embodiment of the present invention. It is sectional drawing of the rotation bezel vicinity of the portable timepiece shown in FIG. It is a disassembled perspective view of the portable timepiece shown in FIG. (A) is the upper surface side perspective view of the click spring used for the portable timepiece shown in FIG. 1, (b) is sectional drawing which expanded the vicinity of the front-end | tip part of the spring part, and showed the latching state. It is a top surface side perspective view of the lock pin used for the portable timepiece shown in FIG. It is a top surface side perspective view of the rotation bezel used for the portable timepiece shown in FIG. It is a fragmentary perspective view of the upper surface side of the lock ring used for the portable timepiece shown in FIG. It is a fragmentary perspective view of the lower surface side of the lock ring used for the portable timepiece shown in FIG. (A) is sectional drawing of the circumferential direction seen from the outer side of the case which shows the engagement state of the lock ring used for the portable timepiece shown in FIG. 1, and a case, (b) is sectional drawing of a plunger. It is a figure explaining operation | movement of the lock pin of the locked state used for the portable timepiece shown in FIG. It is a figure explaining operation | movement of the lock pin of the unlocking state used for the portable timepiece shown in FIG. It is sectional drawing which shows the position of the lock pin at the time of the locked state and unlocked state of the portable timepiece shown in FIG. It is a partial expansion perspective view which shows the modification of the lock pin of this embodiment. It is a sectional view showing a lock mechanism of the prior art. It is a sectional view showing a lock mechanism of the prior art.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 12 show a portable timepiece 10 having a lock mechanism according to a preferred embodiment of the present invention.

  FIG. 1 is a plan view of a portable timepiece 10 provided with a locking mechanism of the present invention. FIG. 2 is a partial cross-sectional view of the portable timepiece 10, which is a cross section cut along a plane passing through the center of the support shaft 62 of the lock pin 60. FIG. 3 is an exploded perspective view of the portable timepiece 10.

  Hereinafter, functional components of the portable timepiece 10 will be described in order.

In FIG. 2, a cylindrical portion 21 is formed on the upper surface of the ring-shaped case 20 of the portable timepiece 10, an annular first step portion 22 on the outer side, and a second step portion 23 that is one step lower on the outer side. Is formed. Glass 11 is fitted on the upper surface side of case 20 via packing 20a, and a back cover (not shown) is screwed on the lower surface side. A space 12 formed by the case 20, the glass 11, and the back cover accommodates a movement (not shown) at the center and a battery (not shown) on the lower surface side.

  As shown in FIG. 3, recesses 24 are formed at a plurality of locations in the circumferential direction from the edge of the second step portion 23 of the case 20 to the upper side of the case 20.

  Further, as shown in FIG. 3, click springs 30 are incorporated on the first step portion 22 of the case 20 in which the movement is incorporated, and lock pins 60 that are restricting members are provided at two locations on the second step portion 23. The lock ring 40 which is a restriction operation member is incorporated from above. Further, a rotating bezel 50 as an operation member is incorporated in the step portion 41 on the upper surface of the lock ring 40. Note that a nameplate 52, which will be described later, is not a functional component and is omitted in FIG.

4 shows the click spring 30, and FIG. 4A is a top perspective view of the click spring 30.
FIG. 4B is a cross-sectional view showing a state where the vicinity of the tip of the spring portion 32 is enlarged and locked. As shown in detail in FIG. 4A, the click spring 30 has three spring portions 32 that are cut and raised upward from the ring-shaped main body 31 and bent in two stages at equal intervals. As shown in FIG. 4B, the tip of the spring portion 32 is engaged with any one of the concave portions between the plurality of convex portions 56a constituting the teeth 56 of the rotating bezel 50 described later. The click spring 30 provides a click feeling to the operator as the rotary bezel 50 is operated, and the rotational stop position of the rotary bezel 50 is positioned by the tip of the spring portion 32.

  Further, support portions 33 that are cut and bent at a right angle downward from the main body 31 protrude in two places, and the support portions 33 are locked in locking holes 22 a provided in the first step portion 22 of the case 20. The One support portion 33 is provided at a position shown in FIG. 4A, and the other support portion 33 is provided at a position 180 degrees away from the illustrated support portion 33. The locking holes 22a are provided at a plurality of positions of the first step portion 22 at equal intervals per one support portion 33, and by selecting any one of them and locking the support portion 33, the lock holes 22a are attached to the case 20. The position of the click spring 30 in the rotational direction can be adjusted. One locking hole 22a is provided at the position illustrated in FIG. 3, and the other locking hole is formed at a position 180 degrees away from the locking hole illustrated in FIG.

  FIG. 5 is a perspective view of the lock pin 60 as viewed from the upper surface side. As shown in FIG. 5, the plane of the lock pin 60 is arcuate and has a certain width and thickness. In the vicinity of one end portion 60a of the lock pin 60, the rotating bezel 50 is rotated by engaging with a concave portion between the convex portions 56a constituting the teeth 56 of the rotating bezel 50 described later on the upper surface. A pin 61 as a restricting portion to be restricted is formed, and a support shaft 62 is integrally formed on the lower surface. Furthermore, slopes 60a1 and 60b1 are formed on the upper and lower surfaces near both ends 60a and 60b. The slope 60a1 is cut out at the lower surface side of one end 60a, and the one end 60a is formed in a tapered shape. The slope 60b1 is formed by notching the upper surface side of the other end 60b and forming the other end 60b in a tapered shape.

  The support shaft 62 is inserted into a guide hole 23 b formed in the second step portion 23 of the case 20 with a certain clearance, and guides the free vertical movement of the lock pin 60. With the support shaft 62, the movement range of the lock pin 60 in the direction along the arrangement direction of the plurality of convex portions 56a constituting the teeth 56 of the rotating bezel 50 is limited to the clearance range with respect to the guide hole 23b. The guide holes 23b are formed at two locations, the position shown in FIG. 3 and a position 180 degrees away from this position.

The lock pin 60 is located between the upper surface of the second step portion 23 which is a mounting portion of the case 20 and the lower surface of the rotary bezel 50, and the inner side is the outer surface of the first step portion 22 and the outer side is the inner surface of the lock ring 40. 4
9 is placed so as to be movable up and down in two places in a circumferential space surrounded by 9.

  As shown in FIG. 2, grooves 21 a and 50 b are formed on the outer wall surface of the cylindrical portion 21 of the case 20 and the inner wall surface of the rotating bezel 50 so as to face each other. Then, by engaging a metal C-ring (not shown) having a substantially C shape with a part of the polygonal outline missing in plan view across the groove portions 21a and 50b, the rotating bezel 50 is removed from the case 20. It is designed not to come off.

  FIG. 6 is a perspective view of the rotating bezel as viewed from the upper surface side. As shown in FIG. 6, six operation portions 50 a are formed on the outer periphery of the rotating bezel 50 so as to protrude at equal intervals. The side surface 50a1 of the operation unit 50a is more easily operated counterclockwise by making the inclination of the operation unit 50a with respect to the rotation direction tighter than the opposite inclined surface 50a2. An annular step 51 is formed on the upper surface side of the rotating bezel 50. A name plate 52 shown in FIG. 2 (not shown in FIG. 3 because it is not a functional component) is shown in FIG. It is fixed with four screws 53 at equal intervals.

  On the name plate 52, the minute scale 54, the origin mark 57, and the number 55 with a 5-minute interval shown in FIG. 1 are written so as to surround the hand 14 and the parting range of the dial 13 in a plan view of the portable timepiece 10. Has been. On the lower surface of the rotating bezel 50, a plurality of convex portions 56a formed by forming concave portions in the radial direction are provided at equal intervals in the circumferential direction. As shown in FIG. 4B, the rotational bezel 50 is rotated counterclockwise by engaging the tip of the spring portion 32 of the click spring 30 with the circumferential cross-sectional shape of the concave portion of the convex portion 56a being left and right. It may be possible to rotate only in one direction.

  FIG. 7 is an enlarged perspective view of a part of the upper surface side of the lock ring 40. As shown in FIG. 7, semicircular arc-shaped step portions 41 a and 41 b are formed at two equal intervals on the inner periphery of the lock ring 40. In FIG. 7, the step portion 41a shows only one end side, and the step portion 41b shows only the other end side. The step portions 41 a and 41 b have upper surfaces at positions slightly lower than the upper surface of the lock ring 40. A regulation having an upper surface at a position further lowered from the upper surface of the step portion 41a at one end of the step portion 41a, and an upward inclined surface 45 that is a tapered inclined surface that is notched and inclined toward the lower surface side. An action part 46 is formed. The other end of the step portion 41b has a lower surface at a position higher than the thickness of the lock pin 60 from the lower surface of the step portion 41b, and the lower surface is a tapered inclined surface that is notched and inclined toward the upper surface side. A release action portion 48 having a slope 47 at the tip is formed.

  At the other end (not shown) of the step portion 41a, a release action portion having the same shape as the release action portion 48 is formed, and at one end (not shown) of the step portion 41b, a restriction action portion having the same shape as the restriction action portion 46 is formed. ing. That is, the regulation action part 46 and the release action part 48 are formed at both ends of the step part 41a and the step part 41b. The regulation action part 46 of the step part 41a and the release action part 48 of the step part 41b are provided to face each other, and according to the turning operation of the lock ring 40 with respect to the lock pin 60 positioned therebetween, Both action parts perform different actions.

  When the portable timepiece 10 is in the locked state, the tip of the upper surface of the regulating action portion 46 is at the position of the tip of the lower surface of the lock pin 60 and the tip of the lower surface of the release action portion 48 is behind the upper surface of the lock pin 60. In the end position. When the portable timepiece 10 is in the unlocked state, the tip of the release action portion 48 is at a position close to the tip of the lock pin 60 and the tip of the restriction action portion 46 is at a position away from the lock pin 60. The restriction action part 46 and the release action part 48 have such a positional relationship. The positional relationship between the releasing action portion (not shown) of the step portion 41a and the restricting action portion (not shown) of the step portion 41b is the same as the positional relationship between the restricting action portion 46 and the releasing action portion 48 shown in the figure. One lock pin 60 is arranged.

  As shown in FIG. 3, on the outer periphery of the lock ring 40, there are formed operation portions 40a that are operated when the lock ring 40 is turned by protruding in two radial directions at equal intervals, and on the upper surface of the operation portion 40a. Are marked with an arrow indicating a clockwise direction and a LOCK character, and an arrow indicating a counterclockwise direction and a FREE character.

  FIG. 8 is a partial perspective view of the lower surface side of the lock ring 40. As shown in FIG. 8, on the lower surface side of the lock ring 40, a long groove portion 42 in the circumferential direction and short groove portions 43 and 44 are formed so as to sandwich the long groove portion 42. Each of the groove portions 42, 43, and 44 has a certain width in the radial direction. FIG. 9A is a circumferential sectional view of the engaging portion between the lock ring 40 and the case 20 as seen from the outside of the case 20, and the lock ring 40 is in the unlock position. FIG. 9B is a cross-sectional view of the plunger 70.

  The plunger 70 shown in detail in FIG. 9B is housed in a cylindrical bottomed container 71, and from an opening above the container 71 in which a steel ball 73 urged upward by a compression coil spring 72 is squeezed. The exposed parts are planted in holes 23a provided at two locations at equal intervals in the second step portion 23 of the case 20. One hole 23a is provided at the position shown in FIG. 3, and the other hole 23a is provided at a position 180 degrees away from the position shown in FIG.

  When the operation portion 40a of the lock ring 40 is operated and stopped at the lock position, the steel ball 73 of the plunger 70 protrudes to the lower surface side between the long groove portion 42 and the short groove portion 44 on the lower surface side of the lock ring 40. The user of the watch gets a click feeling when getting over the convex portion and engaging with the short groove 44. Further, when the operation portion 40 a of the lock ring 40 is operated and stopped at the unlock position, the steel ball 73 of the plunger 70 is placed on the lower surface side between the long groove portion 42 and the short groove portion 43 on the lower surface side of the lock ring 40. The user of the watch gets a click feeling when he / she gets over the protruding convex portion and engages with the short groove 43.

  The entire lock ring 40 is covered with a DLC film (a hard film called diamond-like carbon). The DLC films on the side surfaces 43a, 44a, 42a that are inclined surfaces of the short groove portions 43, 44 and the long groove portion 42, and the lower surfaces 40b1, 40b2 between the two grooves are removed by laser. This is because when the steel ball 73 of the plunger 70 passes over the convex portion between the grooves on the lower surface of the lock ring 40, the steel ball 73 is worn by the DLC film having a hardness higher than that of the stainless steel ball 73, This is in order to prevent deformation to such an extent that troubles occur when getting over the convex portion between the grooves. Further, the steel ball 73 can be formed of a hard material such as ceramics without removing the side surfaces 43a, 44a, 42a and the DLC film on the lower surface between the grooves so that the ball side is not worn.

  In order to prevent the locked state from being released due to an erroneous operation, the side surfaces 43a, 44a, and 42a are made gentler at the three locations indicated by the arrows than the others, and the left side surface 44a in FIG. It may be inclined. As a result, the rotational torque required for the rotation operation of the lock ring 40 when the lock ring 40 is turned counterclockwise in order to change from the locked state in which the groove 44 is located at the plunger 70 to the unlocked state is set large. The movement of the locking operation is loose and the movement of the unlocking operation can be tight.

  On the upper surface of the second step portion 23 in the case 20, an arcuate display portion 25 for displaying a locked / unlocked state at two locations at equal intervals from the outer periphery is provided. The display unit 25 is colored, for example, in red. When the rotary bezel 50 is locked, the display unit 25 is covered with an operation unit 40 a that protrudes from the lock ring 40 to the outer periphery, and the rotary bezel 50 is unlocked. In the state, the operation unit 40a rotates and the display unit 25 is exposed. By looking at the display unit 25, the locked or unlocked state can be easily visually confirmed.

  By rotating the lock ring 40, the groove portion 42 formed on the lower surface side of the lock ring 40 can be made to coincide with the position of the concave portion 24 of the case 20, and the groove portion 42 has a portion on the outer peripheral side thereof. From the recess 24 of In this state, with the glass 11 of the portable watch 10 facing upward, by pouring tap water or the like into the vicinity of the recess 24, the tap water flows between the parts and is discharged through the groove 42 and other parts. Dust and the like that have entered the groove 42 can be washed away.

  10 is a cross-sectional view of the relationship between the lock ring 40, the lock pin 60, and the rotating bezel 50 when the portable timepiece 10 is in a locked state, as seen from the outside of the case 20. FIG. FIG. 12 is a sectional view showing the position of the lock pin 60 when the portable timepiece 10 is in a locked state and an unlocked state. In FIG. 12, the restricting action part 46 and the releasing action part 48 are omitted so as not to complicate the drawing.

  When the unlocked portable timepiece 10 is to be locked, the first operation unit 40a is operated to operate the lock ring 40 along the arrangement direction of the plurality of convex portions 56a constituting the teeth 56 of the rotating bezel 50. Turn clockwise to set the lock position. At this time, the groove 44 on the lower surface of the lock ring 40 shown in FIG. 9A fits into the plunger 70, and the position of the lock ring 40 is determined. With this turning operation, the restricting action portion 46 moves forward and pushes the lock pin 60 toward the rotating bezel 50 side.

  That is, when the lock ring 40 turns clockwise, immediately before the state shown in FIG. 10, the vicinity of the slope 45 and the vicinity of the slope 60 a 1 of the lock pin 60 come into contact with each other. The lifting force acts. Further, when the lock ring 40 continues the pivoting motion, the restricting action portion 46 sinks under the lock pin 60, and the upper surface of the restricting action portion 46 is located at one end 60 a of the lock pin 60 as shown in FIG. 10. The lower surface is pushed up to the rotating bezel 50 side. The upper surface of the lock pin 60 is a surface facing the teeth 56 of the rotating bezel 50, and the lower surface of the lock pin 60 is a surface not facing the teeth 56 of the rotating bezel 50.

  In this state, the pin 61 engages with the recess of the tooth 56 of the rotating bezel 50. At the same time, the release action part 48 moves backward, and the slope 47 suppresses the lifting of the other end part 60 b of the lock pin 60. As a result, the lock pin 60 is inclined upward with the other end 60b as a fulcrum, and the pin 61 moves to a position where it engages with any one of the recesses between the teeth 56 of the rotating bezel 50. The rotation of the rotating bezel 50 is locked. At this time, the position where the click spring 30 is assembled to the case 20 has been adjusted in advance so that the pin 61 comes to a position where the pin 61 is just engaged with the recess of the tooth 56.

  As shown in FIG. 12, the upper surface of the lock pin 60 in the unlocked state is at the position S1, and the upper surface of the lock pin 60 in the locked state is at the position S2. Then, one end 60a of the lock pin 60 moves in a locus indicated by R between the locked state and the unlocked state. Therefore, when the lock pin 60 performs a restricting operation from the unlocked state where the lock pin 60 is not engaged with the tooth 56 of the rotating bezel 50 to the engaged locked state, the lock pin 60 is a space surrounded by S1, S2, and R. Requires movement within the SP.

When the locked portable timepiece 10 is to be unlocked, the operation portion 40a is operated to rotate the lock ring 40 counterclockwise, which is the second direction opposite to the first direction. Set to. At this time, the groove 43 on the lower surface of the lock ring 40 shown in FIG. 9A fits into the plunger 70, and the position of the lock ring 40 is determined. With this turning operation, as shown in FIG. 11, the release action part 48 moves forward, and the lock pin 60 enters the space SP from outside the space SP shown in FIG. And the release action part 48
Is further advanced to cover most of the upper surface of the lock pin 60 facing the teeth 56 of the rotating bezel 50 and to prevent the lock pin 60 from being lifted. On the other hand, since the restricting action portion 46 moves back to a position not related to the lock pin 60, the pin 61 does not engage with the concave portion of the tooth 56, and the rotation of the rotating bezel 50 becomes free.

  Next, the position where the regulating action part 46 and the releasing action part 48 are formed on the lock ring 40 will be described.

  When the lock ring 40 is turned clockwise from the unlocked state of the portable timepiece 10 shown in FIG. 11 to the locked state, the upper surface of the regulating action portion 46 faces the lower surface side of the lock pin 60 to the rotating bezel 50 side. When the lock pin 60 starts to tilt after moving to the pushing position, the release action part 48 moves out of the space SP shown in FIG. The upper surface of 46 retreats to a position that does not hinder the operation of pushing up the lower surface side of the lock pin 60.

  In addition, when the lock ring 40 is turned counterclockwise from the locked state of the portable timepiece 10 shown in FIG. 10 to the unlocked state, the release action portion 48 enters the space SP shown in FIG. Sometimes, the upper surface of the restricting action part 46 moves to a position where the lower surface side of the lock pin 60 is not pushed up to the rotating bezel 50 side, or the lower surface side of the lock pin 60 is pushed up to the rotating bezel 50 side. However, the release action part 48 moves backward to a position where the lock pin 60 is inclined so as not to prevent the movement into the space SP. The restricting action part 46 and the releasing action part 48 are formed in the lock ring 40 so as to have such a positional relationship.

  If the restricting action portion 46 and the releasing action portion 48 are in such a positional relationship, regardless of the rotation position of the lock ring 40, either the restricting action portion 46 or the releasing action portion 48 is a lock pin. Therefore, there is no unstable state where both the regulating action portion 46 and the releasing action portion 48 do not act on the lock pin 60.

  Usually, the portable timepiece 10 is used with the dial 13 side facing up and the back cover side facing down. In this case, when the restricting action portion 46 is retracted from the state shown in FIG. 10, the restricting action portion 46 does not push up the lower surface of the lock pin 60, and the lock pin 60 is moved to the position shown in FIG. As it moves, the release action part 48 enters the space SP shown in FIG.

  If the portable timepiece 10 is used with the dial 13 side facing down and the back cover side facing up, the lock pin is moved when the regulating action portion 46 is retracted from the state shown in FIG. 60 does not move to the position shown in FIG. 11 under its own weight. In this case, when the release action part 48 moving forward in the space SP shown in FIG. 12 pushes down the upper surface of the lock pin 60, the lock pin 60 moves to the position shown in FIG.

  Therefore, the lock pin 60 is not engaged with the teeth 56 of the rotating bezel 50 from being engaged with the teeth 56 of the rotating bezel 50 by rotating the lock ring 40 without providing a return spring.

  As described above, the two lock pins 60 are provided at two locations, and the lock ring 40 is provided with two sets of the restricting action portion 46 and the release action portion 48 corresponding thereto, as shown in FIG. The operation to the locked state or unlocked state shown in 11 is performed simultaneously at these two positions.

As described above, the locking mechanism of the rotating bezel shown in the present embodiment is independent of the click spring 30 that gives a click feeling to the operation of the rotating bezel 50, and the lock pin 6 that is a restricting member.
Since 0 is used, the rotating bezel 50 can be firmly locked and is not easily broken.

  Further, the lock mechanism of the rotating bezel shown in the present embodiment is such that the lock ring 40, which is a restricting operation member, rotates in a direction along the arrangement direction of the plurality of convex portions 56a constituting the teeth 56 of the rotating bezel 50. Can be used. Furthermore, the lock mechanism of the rotating bezel shown in the present embodiment is a portable watch that does not engage with the teeth 56 of the rotating bezel 50 from the locked state of the portable watch 10 that engages the lock pins 60 with the teeth 56 of the rotating bezel 50. Since the return spring is not required when operating in the 10 unlocked state, the structure is simple.

  Next, a modified example of the lock pin that is the restricting member will be described. FIG. 13 is a top perspective view showing a modification of the lock pin 60 of the present embodiment. In the lock pin 65 shown in FIG. 13A, a cubic-shaped engaging portion 66 as a restricting portion is formed at one place with a width substantially the same as the width of the lock pin 65. The engaging portion 66 has a cross-sectional shape that engages with the recess of the tooth 56 of the rotating bezel 50. Other configurations are the same as those of the lock pin 60. In this lock pin 65, the engaging portion 66 is longer in width than the lock pin 60 shown in FIG. 5, so that the engagement with the recess of the tooth 56 is further strengthened, and the engaging portion 66 is engaged with the tooth 56. Even if an impact is applied to the portable timepiece 10 in the combined state, the engaging portion 66 is hardly damaged.

  The lock pin 67 shown in FIG. 13B is formed with two pins 68 that are restricting portions. The pin 68 has a shape that engages with an adjacent recess of the tooth 56 of the rotating bezel 50. The lock pin shown in FIG. 13B has the same effect as the lock pin 67 shown in FIG. 13A because the two pins 68 engage with the teeth 56.

  In the present embodiment, an example of the rotating bezel 50 that performs a rotating operation is shown as the operating member. However, the operating member can be applied to an operating member that slides linearly and reciprocates instead of the rotating operation. For example, the rotary bezel 50 is formed in a shape that is linearly straightened with a length of about 1/5, and the lock ring 40 is formed in accordance with the shape so that these members can be used as a slide operation member such as a slide switch. It is possible to configure.

  In this embodiment, the lock pin 60 is inclined with the other end 60b as a fulcrum. However, the lock pin 60 is not inclined between the second step portion 23 of the case 20 and the teeth 56 of the rotating bezel 50. It is good also as a structure which moves up and down. For example, the lock pin 60 may be moved up and down by reducing the length of the lock pin 60 and increasing the length of the support shaft 62 so that the lock pin 60 does not tilt. In this case, the restricting action part 46 and the releasing action part 48 are preferably formed to extend to the vicinity of both ends 60a and 60b of the shortened lock pin 60. However, in the structure shown in the present embodiment, the support shaft 62 may be shorter and the operation of the lock pin 60 is more stable.

  Furthermore, although the slope 45 and the slope 60a1 are provided in each of the regulating action portion 46 and the one end 60a of the lock pin 60, the slope may be provided in only one of them, or the slope may not be formed in both. Can be configured to perform similar operations. For example, the slope 60 a 1 is provided only on the lock pin 60, and the thickness of one end 60 a of the lock pin 60 is made thicker than the thickness of the end of the regulating action portion 46. With this configuration, the rectangular end portion of the restricting action portion 46 may be in contact with the inclined surface 60 a 1 of the lock pin 60, and the end portion of the restricting action portion 46 may be guided under the lock pin 60.

Further, without providing slopes on both the lock pin 60 and the regulating action portion 46, the length of the support shaft 62 of the lock pin 60 is made longer than the depth of the guide hole 23b, and the portable watch 10 is locked in the unlocked state. One end portion 60 a of the pin 60 may be in a state of being floated from the second step portion 23 by more than the thickness of the end portion of the restricting action portion 46. As a result, the end portion of the regulating action portion 46 enters between the second step portion 23 and the lower surface of the lock pin 60, and the end portion of the regulating action portion 46 can directly press the lower surface of the lock pin 60.

  However, as in the present embodiment, when the inclined surface is formed on both the lock pin 60 and the restricting action portion 46, the restricting action portion 46 is locked compared to the case where the inclined face is formed only on one of these. The pin 60 can be smoothly pushed toward the teeth 56 of the rotating bezel 50. In addition, when the slope is formed on both the lock pin 60 and the regulating action portion 46, the lock pin 60 is not inclined in the unlocked state of the portable timepiece 10 as compared to the case where the slope is not formed on both of them. Therefore, the lock mechanism can be thinned.

  In the present embodiment, the slope 47 and the slope 60b1 are provided on both the release action portion 48 and the other end 60b of the lock pin 60. However, the slope may be provided on only one of them, or the slope may be provided on both. A similar operation can be performed even without forming. In particular, the release action part 48 has a lower surface higher than the upper surface of the lock pin 60 in the unlocked state of the portable timepiece 10. Therefore, depending on the setting of the height, the end portion of the release action portion 48 may be used during the unlocking operation without providing a slope on one or both of the release action portion 48 and the other end portion 60b of the lock pin 60. However, it can be configured so as not to be caught by the other end 60 b of the lock pin 60.

  However, as in this embodiment, when the slopes are formed on both the release action part 48 and the lock pin 60, the release action part 48 can move smoothly into the space SP, and the lower surface of the release action part 48 is locked. The thickness can be reduced by approaching the upper surface of the pin 60.

  Further, the restriction action portion 46 and the release action portion 48 are selectively switched according to the rotation direction of the lock ring 40 and act on the lock pin 60. For example, the lock ring 40 is moved in the FREE direction. It is also possible to configure such that when the rotation is rotated, the release action part 48 acts at intervals after the action of the restriction action part 46 on the lock pin 60 is released. The same applies when the lock ring 40 is rotated in the LOCK direction.

  However, if there is a state in which neither the regulating action part 46 nor the release action part 48 acts on the lock pin 60, the lock pin 60 moves according to the posture of the portable timepiece 10, and the lock ring 40 is rotated to the “LOCK” rotational position. Although not, the locking pin 60 may engage the teeth 56 of the rotating bezel 50. On the other hand, in this embodiment, it can be used without depending on the posture of the portable timepiece 10.

  Further, if the lock pin 60 can be prevented from moving in the rotation direction of the lock ring 40, the support shaft 62 may not be provided on the lock pin 60. For example, a recess is formed on the back side of the lock pin 60 near the other end 60b, or a through hole is formed, and the protrusion formed on the second step portion 23 is engaged with the recess or the through hole. And it is good also as a structure which does not move to the rotation direction of the lock ring 40. FIG.

  Further, in the present embodiment, the lower surface of the release action portion 48 is located more than the thickness of the lock pin 60 with respect to the upper surface of the end portion of the restriction action portion 46, but other configurations may be used. Is possible. For example, a portion of the lock pin 60 on the side of the other end 60 b from the support shaft 62 is formed in a shape that is one step lower so as to be away from the rotating bezel 50 by a height corresponding to the thickness of the lock pin 60. Then, by forming a recess corresponding to this one step lower portion in the second step portion 23, it is possible to form the lower surface of the release action portion 48 at substantially the same height as the lower surface of the restriction action portion 46. is there. However, the configuration shown in the present embodiment can simplify the shapes of the second step portion 23 and the lock pin 60.

DESCRIPTION OF SYMBOLS 10 Portable clock 11 Glass 12 Space 20 Case 21 Cylindrical part 22 First step part 23 Second step part 24 Recess part 25 Display part 30 Click spring 31 Main body 32 Spring part 40 Lock ring 40a Operation part 41, 41a, 41b Step part 42 Groove part 42a Side surface 43 Groove part 43a Side surface 44 Groove part 44a Side surface 45 Slope 46 Restriction action part 47 Slope 48 Release action part 50 Rotating bezel 51 Step part 52 Name plate 56 Tooth 57 Origin mark 60, 65, 67 Lock pin 60a, 60b End part 60a1 Slope 60b1 Slope 61, 68 Pin 62 Support shaft 66 Engagement part 70 Plunger 71 Bottomed container 72 Compression coil spring 73 Steel ball

Claims (3)

An operation member capable of being moved in a predetermined direction;
A regulating member that engages with teeth formed by arranging a plurality of convex portions on the operating member to regulate movement in the predetermined direction;
A lock mechanism for an operation member having a restriction operation member that operates the restriction member in a state in which the restriction member is not engaged with the tooth and a state in which the restriction member is engaged;
The restricting operation member pushes a non-facing surface of the restricting member to the tooth toward the tooth by moving the restricting member in the first direction along the arrangement direction of the plurality of convex portions. And a space required for movement from a state where the restriction member does not engage the tooth to a state where the restriction member engages due to the movement in the second direction opposite to the first direction. A release action part that enters the space from outside,
Depending on whether the restriction operation member is operated in the first direction or the second direction, the restriction action part and the release action part alternatively act on the restriction member ,
A slope is formed on at least one of one end of the restricting member or the end of the restricting action portion,
The slope provided at one end of the restricting member is a slope having a shape in which the non-opposing surface side of the restricting member with the teeth is notched and the one end is tapered.
The slope provided at the end of the restricting action portion is a slope having a shape in which the side facing the tooth in the restricting action portion is notched and the end of the restricting action portion is tapered. Locking mechanism for operation member. An operation member capable of being moved in a predetermined direction;
A regulating member that engages with teeth formed by arranging a plurality of convex portions on the operating member to regulate movement in the predetermined direction;
A lock mechanism for an operation member having a restriction operation member that operates the restriction member in a state in which the restriction member is not engaged with the tooth and a state in which the restriction member is engaged;
The restricting operation member pushes a non-facing surface of the restricting member to the tooth toward the tooth by moving the restricting member in the first direction along the arrangement direction of the plurality of convex portions. And a space required for movement from a state where the restriction member does not engage the tooth to a state where the restriction member engages due to the movement in the second direction opposite to the first direction. From outside
A release action unit that enters the space,
Depending on whether the restriction operation member is operated in the first direction or the second direction, the restriction action part and the release action part alternatively act on the restriction member,
A slope is formed on at least one of the other end of the restricting member or the end of the release action portion,
The slope provided at the other end of the restricting member is a slope having a shape in which the surface facing the tooth in the restricting action portion is notched and the other end is tapered,
The slope provided at the end portion of the release action portion is a slope having a shape in which the non-opposing surface side of the release action portion with respect to the teeth is notched and the end portion of the release action portion is tapered. the lock mechanism of the operation member you. An operation member capable of being moved in a predetermined direction;
A regulating member that engages with teeth formed by arranging a plurality of convex portions on the operating member to regulate movement in the predetermined direction;
A lock mechanism for an operation member having a restriction operation member that operates the restriction member in a state in which the restriction member is not engaged with the tooth and a state in which the restriction member is engaged;
The restricting operation member pushes a non-facing surface of the restricting member to the tooth toward the tooth by moving the restricting member in the first direction along the arrangement direction of the plurality of convex portions. And a space required for movement from a state where the restriction member does not engage the tooth to a state where the restriction member engages due to the movement in the second direction opposite to the first direction. A release action part that enters the space from outside,
Depending on whether the restriction operation member is operated in the first direction or the second direction, the restriction action part and the release action part alternatively act on the restriction member,
The restricting member is placed on a placing portion of a lock mechanism of the operation member when not engaging with the teeth,
The regulating action part is on the placement part,
The release acting portion, to the placing part, the locking mechanism of the operation member characterized in that a position spaced above the thickness of the regulating member.

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