JP5561833B2 - Ratchet sliding contact member and shutter locking device - Google Patents

Description

  The present invention is supported by a ratchet lever and slidably pressed against the side surface of the ratchet gear, and urges the ratchet lever to a ratchet effective position that can be locked to the ratchet gear by friction with the ratchet gear rotating in one direction. In addition, a ratchet sliding member made of sheet metal for biasing the ratchet lever to a ratchet invalid position that cannot be locked to the ratchet gear by friction with the ratchet gear rotating in the other direction, and a shutter equipped with the ratchet sliding member It relates to a locking device.

  FIG. 12 shows a conventional ratchet sliding contact member 5 of this type. The ratchet sliding contact member 5 includes first and second elastic facing pieces 1 and 2 capable of sandwiching the ratchet gear 8. As shown in FIG. 13, the first elastic facing piece 1 protrudes from the center of one outer edge portion of the mounting base plate 3. On the other hand, the second elastic facing piece 2 forms an arch structure portion having a pair of leg portions 2B, 2B, and the tips of the leg portions 2B, 2B are attached to the mounting base via a pair of central plate portions 4A, 4A. It is connected to both ends at one outer edge of the plate 3. The mounting base plate 3, the central plate portion 4A, and the second elastic facing piece 2 are bent so as to have a crank shape. A pair of sliding contact projections 1A and 2A protrudes from the first and second elastic facing pieces 1 and 2 toward the ratchet gear 8, and the tips of the sliding contact projections 1A and 2A form the ratchet gear 8. It comes in sliding contact (see Patent Document 1).

Japanese Patent Laying-Open No. 2010-242292 (see paragraphs [0045] and [0046], FIGS. 6 to 8)

  However, in the above-described conventional ratchet sliding contact member 5, the pair of sliding contact protrusions 1 </ b> A and 2 </ b> A are displaced in the rotational radius direction of the ratchet lever 9. The ratchet gear 8 could not be pushed in between 1A and 2A. For this reason, it is necessary to hold the first and second elastic facing pieces 1 and 2 in a state where the first and second elastic facing pieces 1 and 2 are preliminarily spread and insert the ratchet gear 8 there. In the ratchet sliding contact member 5 described above, one of the first and second elastic facing pieces 1 and 2 faces the front side in the stamping direction of the press, and the other faces the rear side in the stamping direction of the press. As a result, the burrs from the press project from either one of the first and second elastic facing pieces 1 and 2 toward the ratchet gear 8, and the slidable contact between the burrs and the ratchet gear 8 is achieved. An abnormal noise could occur.

  The present invention has been made in view of the above circumstances, and includes a ratchet sliding member and a shutter locking device that are excellent in assembling workability and can prevent the occurrence of abnormal sliding contact noise between a burr and a ratchet gear. For the purpose of provision.

  The ratchet slidable contact member according to the invention of claim 1 made to achieve the above object is supported by the ratchet lever and pressed against the side surface of the ratchet gear so as to be slidably contacted with the ratchet gear rotating in one direction. To urge the ratchet lever to a ratchet effective position that can be locked to the ratchet gear, and to urge the ratchet lever to a ratchet invalid position that cannot be locked to the ratchet gear by friction with the ratchet gear that rotates in the other direction. A ratchet sliding member made of sheet metal, which is a ratchet lever that is bent and raised from both sides of the central plate portion, facing the outer edge portion of the ratchet lever that faces the ratchet gear side. A pair of elastic facing pieces capable of sandwiching and a pair of elastic facing pieces approach each other from mutually facing positions And a pair of sliding contact projections whose tip end abuts on the ratchet gear, and a pair of elastic facing pieces, which are provided at positions facing each other and gradually approach each other toward the tip end of the sliding contact projection. And a pair of guide inclined portions that are inclined as described above.

  According to a second aspect of the present invention, in the ratchet sliding contact member according to the first aspect, the guide inclined portion is a direction of a fold line between the central plate portion and the elastic facing piece with respect to the tip end portion of each sliding contact protrusion. It has the feature in the place arranged on both sides.

  The invention according to claim 3 is the ratchet sliding contact member according to claim 2, wherein one elastic facing piece has an arch structure provided with a pair of leg portions in the direction of a fold line between the center plate portion, Of the sheet metal constituting the ratchet sliding contact member, a portion extending between the pair of leg portions and the intermediate portion of the central plate portion extends flush with the base end portion of the other elastic facing piece. The mounting piece is characterized in that an attachment hole formed through the tip of the attachment piece can be inserted through the rotation support shaft of the ratchet lever for attachment.

  According to a fourth aspect of the present invention, there is provided a shutter locking device, wherein the shutter curtain is closed by rotating around a ratchet gear that rotates together with the winding shaft of the shutter curtain, and a first rotation axis that is parallel to the rotation axis of the ratchet gear. A ratchet lever that locks the shutter curtain and locks the shutter curtain to allow rotation of the ratchet gear in the closing direction while prohibiting rotation in the reverse opening direction, and a lock for releasing the lock A shutter locking device comprising a release operation unit, wherein the ratchet sliding contact member according to any one of claims 1 to 3 is provided to be supported by a ratchet lever, and the ratchet gear rotates in the opening direction. The ratchet lever is attached to the ratchet effective position where it can be locked to the ratchet gear by friction with the ratchet sliding contact member. In addition to generating a positive biasing force, the friction between the ratchet gear rotating in the closing direction and the ratchet sliding contact member generates a negative biasing force that biases the ratchet lever to a ratchet invalid position that cannot be locked to the ratchet gear. The ratchet lever is moved from the standby position around the second rotation axis parallel to the first rotation axis to the lock release position, and the ratchet lever is ratchet from the ratchet effective position. While moving to the invalid position, the positive biasing force received by the ratchet lever is received by the distal end surface of the second rotating shaft in the turning radial direction, and is stretched between the first and second turning shafts together with the ratchet lever. The release holding lever that can hold the ratchet lever in the ratchet invalid position, and the release holding lever is urged to the standby position and is in a tension state Ratchet lever has a feature where the has a biasing means waiting position that allows to separate from the release retention lever receives a negative biasing force.

  According to a fifth aspect of the present invention, in the shutter locking device according to the fourth aspect, the take-up shaft is rotatably supported on the inner side by the support shaft, and the ratchet gear can be inserted through the support shaft, together with the ratchet lever. A cover that is housed in the housing and that rotatably supports the ratchet lever is provided on one end surface of the housing. The cover has a shaft insertion hole through which the support shaft passes, and an opening edge of the shaft insertion hole. And a pair of fixed pieces facing each other with a support shaft interposed therebetween, and a bolt penetrating the support shaft and the pair of fixed pieces in a skewered state is formed on the nut or one fixed piece. The housing can be fixed to the support shaft by tightening it in the female screw hole. Characterized in place of forming the lightening holes in the middle part of that folding line direction.

  According to a sixth aspect of the present invention, there is provided a method of manufacturing a ratchet slidable contact member, wherein the ratchet lever is supported by the ratchet lever so as to be slidably pressed against the side surface of the ratchet gear, and the ratchet gear is rotated by friction with the ratchet gear rotating in one direction. Ratchet sliding contact made of sheet metal to urge the ratchet effective position that can be locked to the ratchet and to urge the ratchet lever to the ratchet invalid position that cannot be locked to the ratchet gear by friction with the ratchet gear rotating in the other direction In the member manufacturing method, a center plate portion addressed to an outer edge portion of the ratchet lever facing the ratchet gear side, a pair of elastic facing pieces that protrude from both side portions of the center plate portion and can sandwich the ratchet gear therebetween The pair of elastic facing pieces protrude from the mutually facing positions to the side approaching each other, and the tip part is a ratchet gear. A pair of slidable contact protrusions that are in contact with each other and a pair of elastic facing pieces that are provided at positions facing each other and that are inclined so as to gradually approach each other toward the tip of the slidable contact protrusion The structure is provided with a guide inclined portion, and after punching from the sheet metal in a state where the central plate portion and the pair of elastic facing pieces are continuous on the same surface, the outer edge portion of the pair of elastic facing pieces in the punching process It is characterized in that the pair of sliding contact protrusions are bent from the central plate portion so that the burrs that can be generated in the protrusions protrude in opposite directions.

[Invention of Claim 1]
The ratchet sliding contact member according to claim 1 has a structure in which a pair of elastic facing pieces are bent and arranged opposite to each other from both sides of the central plate portion addressed to the outer edge portion of the ratchet lever. Of these, the surfaces on which the burrs do not protrude can be opposed to each other, and the occurrence of abnormal sliding contact noise between the burrs and the ratchet gear can be prevented. Further, the pair of elastic facing pieces is provided with a pair of guide inclined portions that are inclined so as to gradually approach each other toward the tip ends of the pair of sliding contact protrusions that are formed to protrude from the pair. Therefore, it is possible to push the ratchet gear between the pair of guide inclined portions to push the pair of elastic facing pieces apart. That is, it is no longer necessary to hold the elastic facing pieces in a state of being spread in advance as in the prior art, and the assembling work can be performed efficiently.

  When the ratchet sliding contact member is attached to the ratchet lever, when the ratchet gear rotates in one direction, the ratchet lever cannot be locked to the ratchet gear due to the sliding contact between the ratchet gear and the ratchet sliding contact member. It is biased to the invalid position. Thus, while the ratchet gear is rotated in one direction, the ratchet lever does not come into contact with the ratchet gear, and the ratchet gear can be gently rotated in one direction to an arbitrary rotation position. On the other hand, when the ratchet gear is rotated in the other direction, the ratchet lever is biased to the ratchet effective position that can be locked to the ratchet gear by the sliding contact between the ratchet gear and the ratchet sliding contact member. Thereby, the ratchet gear can be locked at an arbitrary position.

[Invention of claim 2]
According to the structure of the ratchet sliding contact member according to claim 2, a pair of guide inclined portions from any direction on one side and the other side along the direction of the fold line between the central plate portion and the elastic facing piece. The ratchet gear can be pushed in between.

[Invention of claim 3]
According to the structure of the ratchet slidable contact member of the third aspect, when the pivot shaft of the ratchet lever is inserted into the mounting hole in the mounting piece of the ratchet slidable contact member, the central plate portion is assigned to the outer edge of the ratchet lever The ratchet sliding contact member is attached to the ratchet lever so as to be integrally rotatable.

[Invention of claim 4]
When the shutter curtain is closed and the ratchet gear receives torque in the closing direction, the ratchet lever cannot be locked to the ratchet gear due to friction between the ratchet gear and the ratchet sliding contact member. It is urged to the invalid ratchet position. Thus, while the shutter curtain is being closed, the ratchet lever is not locked to the ratchet gear, and the shutter curtain can be closed to an arbitrary position. In addition, since the ratchet lever and the ratchet gear do not contact while the shutter curtain is closed, the silence can be improved.

  On the other hand, when the closing operation of the shutter curtain is stopped and the winding shaft is biased or operated in the direction of winding the shutter curtain and the ratchet gear receives the torque in the opening direction, the friction between the ratchet gear and the ratchet sliding contact member The ratchet lever is biased to the ratchet effective position that can be locked to the ratchet gear. Thus, while the shutter curtain is being closed, the ratchet lever is not locked to the ratchet gear, and the shutter curtain can be closed to an arbitrary position. When the closing operation is stopped, the ratchet lever The shutter curtain can be locked so as not to open at an arbitrary position by being engaged with the gear.

  In order to release the lock and open the shutter curtain, the lock release operation unit may be operated. Then, when the unlocking operation unit is operated once, the release holding lever is rotated from the standby position to the unlocking position in the process, and the ratchet lever is moved from the ratchet effective position to the ratchet invalid position.

  Here, when the ratchet lever is moved to the ratchet invalid position by the release holding lever, the ratchet lever moves to the endmost ratchet invalid position outside the interference area with the release holding lever. When the shutter curtain is opened, the ratchet lever moves closer to the ratchet effective position from the ratchet invalid position by the friction between the ratchet gear that rotates in the opening direction and the ratchet sliding contact member. Move to an intermediate ratchet invalid position. Then, the ratchet lever comes into contact with the distal end surface of the release holding lever in the rotational radial direction, and the ratchet lever and the release holding lever are in a stretched state between the first and second rotation shafts. Thereby, the ratchet lever is held at the intermediate ratchet invalid position, and the unlocked state is maintained even if the operation of the unlocking operation unit is stopped.

  As described above, according to the present invention, since the unlocked state is maintained by operating the unlocking operation unit once, it is not necessary to continue the unlocking operation by the unlocking operation unit. In addition, when the winding shaft is biased in the direction of winding the shutter curtain, the shutter curtain can be opened with only the biasing force applied to the winding shaft once the unlocking operation is performed. it can. Moreover, what is necessary is just to close a shutter curtain in order to cancel a lock release state. Then, the ratchet lever moves from the middle ratchet invalid position to the outermost ratchet invalid position by the friction between the ratchet gear that rotates in the closing direction with the shutter curtain closing operation and the ratchet sliding contact member, and is released. Move away from the holding lever. Then, the release holding lever returns to the standby position by the bias of the standby position biasing means. Therefore, according to the shutter locking device of the present invention, it is possible to lock the shutter curtain so as not to be opened by closing the shutter curtain, and a series of operations for releasing the lock and opening the shutter curtain. Operability in operation can be improved.

[Invention of claim 5]
According to a fifth aspect of the present invention, there is provided a shutter lock device including a cover that rotatably supports the ratchet lever on one end face of the housing that houses the ratchet gear and the ratchet lever. A support shaft that rotatably supports the winding shaft of the shutter curtain is inserted into the shaft insertion hole of the cover, and a pair of fixed pieces bent from the opening edge of the shaft insertion hole of the cover and the support shaft, The housing is fixed to the support shaft by tightening a bolt penetrated in a skewered manner into a nut or a female screw hole formed in one fixing piece. Here, the fixing piece can be deformed by tightening the bolt and the nut or the female screw hole, but in the present invention, the intermediate portion in the bending line direction in the bending portion between the fixing piece and the main body portion of the cover. Since the lightening hole is formed in the cover, it is possible to prevent deformation to the main body portion of the cover together with the fixing piece. Thereby, the support of the ratchet lever by the cover is stabilized.

[Invention of claim 6]
The ratchet slidable contact member manufactured by the manufacturing method according to claim 6 has a structure in which the surfaces of the pair of elastic facing pieces on which the burrs do not protrude face each other. Can be prevented. In addition, since the pair of elastic facing pieces are formed with a pair of guide inclined portions that are inclined so as to gradually approach each other toward the tip end portions of the pair of sliding contact protrusions that protrude from the pair. It is possible to push the ratchet gear between the pair of guide inclined portions to spread the pair of elastic facing pieces. That is, it is no longer necessary to hold the elastic facing pieces in a state of being spread in advance as in the prior art, and the assembling work can be performed efficiently.

The perspective view of the shutter apparatus which concerns on one Embodiment of this invention. Perspective view of shutter device Disassembled perspective view of shutter device Rear perspective view of shutter locking device Front perspective view of shutter locking device A perspective view of the shutter locking device with the lid removed Side view of shutter locking device during shutter curtain closing operation Perspective view of ratchet lever, ratchet gear and ratchet sliding contact member Perspective view of ratchet sliding contact member Plan view of the developing member of the ratchet sliding contact member Side view of shutter locking device during shutter curtain closing operation A perspective view of a conventional shutter locking device A perspective view of a conventional ratchet sliding contact member

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. The shutter device 10 according to the present embodiment shown in FIG. 1 is attached to, for example, an upper edge portion of a house window (not shown), and has a winding shaft 12 for winding the shutter curtain 15. The support shaft 11 is rotatably supported.

  As shown in FIG. 3, the take-up shaft 12 is formed by fitting a disk 13 inside both ends of the cylindrical drum 12D (only one end of the cylindrical drum 12D is shown in FIG. 3). A screw hole 13A is formed at a predetermined location on the peripheral surface of the disk 13, and a screw insertion hole 12A is formed through the cylindrical drum 12D so as to correspond to the screw hole 13A. Then, the screw N1 (see FIG. 1) inserted through the screw insertion hole 12A is fastened to the screw hole 13A of the disk 13, and the cylindrical drum 12D and the disk 13 are fixed so as to be integrally rotatable.

  As shown in FIG. 3, a center hole 13 </ b> C is formed through the center of the disk 13, and a plurality of positions (for example, eight locations) equally divided around the center hole 13 </ b> C on the end surface of the disk 13 have a plurality of positions. A screw hole 13B is formed. A coupling ring 14 is fixed to the disk 13 on one end side of the winding shaft 12. The coupling ring 14 has a structure in which a plurality of connecting projecting pieces 14A are bent at right angles from the inner peripheral edge of a disc-shaped ring main body 14H. The ring main body 14H is formed with a plurality of mounting holes 14B at a plurality of positions (for example, four locations) equally divided in the circumferential direction. Then, with the ring body 14H overlaid on the end face of the disk 13 and the connecting protrusion 14A protruding to the opposite side of the disk 13, the screw through the mounting hole 14B is tightened into the screw hole 13B of the disk 13 and the coupling ring 14 is fixed to the disk 13 so as to be integrally rotatable.

  The support shaft 11 has a cylindrical pipe structure, and extends in both lateral directions from both end surfaces of the winding shaft 12 through the center holes 13C at both ends of the winding shaft 12 (specifically, the center holes 13C of the disk 13). ing. And the both ends of the support shaft 11 are each fixed to the attachment base which is not shown in figure so that rotation is impossible, and these attachment bases are being fixed to the wall surface of a residence. A bearing 11 </ b> B (for example, a bearing or a sliding metal) is fitted between the outer peripheral surface of the support shaft 11 and the inner peripheral surface of the center hole 13 </ b> C in the winding shaft 12.

  In addition, a torsion coil spring (not shown) is wound around the support shaft 11 inside the winding shaft 12, and one end of the torsion coil spring is fixed to a screw hole 13B of the disk 13 via a screw (not shown). The other end is fixed to the support shaft 11 with a screw or the like. Thereby, the winding shaft 12 is biased in the direction of winding the shutter curtain 15.

  As shown in FIG. 1, the shutter curtain 15 has a known caterpillar structure formed by connecting a plurality of band-shaped metal plates. Further, the lateral width of the shutter curtain 15 is larger than the axial length of the winding shaft 12. Then, one end portion of the shutter curtain 15 in the winding length direction is directed to the outer peripheral surface of the winding shaft 12 so that the shutter curtain 15 protrudes from both end surfaces of the winding shaft 12 in both lateral directions. Is screwed to the winding shaft 12. Specifically, the screw N1 fastened to the screw hole 13A on the peripheral surface of the disk 13 is also inserted into a screw insertion hole (not shown) provided at one end of the shutter curtain 15, and the cylindrical drum 12D. The shutter curtain 15 is fastened together with the screw hole 13 </ b> A of the disk 13.

  Moreover, the shutter rail which is not shown in figure is each provided in the both-sides edge part of the window of the house in which the shutter apparatus 10 is attached. Then, both sides of the portion of the shutter curtain 15 that extends downward from the winding shaft 12 are maintained in engagement with the shutter rails, and the lower end of the shutter curtain 15 is manually pulled downward to wind the winding. The shutter curtain 15 is pulled out from the take-up shaft 12 with the rotation of the take-up shaft 12.

  The shutter device 10 is provided with a shutter locking device 20 for closing the shutter curtain 15 to an arbitrary position in the vertical direction of the window and locking the shutter curtain 15 so as not to open upward.

  As shown in FIG. 3, the shutter locking device 20 includes a flat disk-shaped housing 21. As shown in FIG. 4, a shaft insertion hole 21 </ b> A is formed through the shaft center of the housing 21, and the support shaft 11 is inserted in a loosely fitted state inside the shaft insertion hole 21 </ b> A.

  The housing 21 is provided with a front cover 23 fixed to a front end face 21F facing a direction orthogonal to the support shaft 11 with a screw, while a rear cover 60 (in the present invention) is provided on a rear end face 21R opposite to the front end face 21F. In the state of being fixed with screws. The front end face 21 </ b> F is disposed opposite to one end face of the winding shaft 12. Further, the outer diameter of the housing 21, which is also the outer diameter of the shutter locking device 20 as a whole, is slightly smaller than the outer diameter of the winding shaft 12. When the shutter curtain 15 is wound around the winding shaft 12 and becomes cylindrical, the shutter curtain 15 is disposed inside the cylindrical shutter curtain 15.

  A pair of fixed pieces 22 and 22 are bent rearward from a position opposite the opening edge of the rear cover 60 with the shaft insertion hole 21A interposed therebetween. Both the fixing pieces 22, 22 are tapered. Further, in each of the fixed pieces 22, 22, a lightening hole 22 </ b> C is formed in an intermediate portion in the bending line direction in a bent portion between the fixed piece 22 and the main body portion of the rear cover 60. Furthermore, a bolt insertion hole 22B is formed through the position near the tip of one fixing piece 22, while a female screw hole 22A passes through the coaxial line of the bolt insertion hole 22B at a position near the tip of the other fixing piece 22. Is formed. The bolt N3 inserted from the bolt insertion hole 22B side in a state where the mounting hole (not shown) penetrating the support shaft 11 in the radial direction, the bolt insertion hole 22B, and the female screw hole 22A are arranged on the same straight line. The housing 21 is fixed to the support shaft 11 by being fastened to the female screw hole 22A. The fixing pieces 22 and 22 can be deformed by tightening the bolt N3. However, in the present embodiment, a thinning hole is formed in a bent portion between each fixing piece 22 and the main body portion of the rear cover 60. The deformation to the main body portion of the rear cover 60 together with the fixed piece 22 is prevented. Thereby, the support of the ratchet lever 30 (see FIG. 6) by the rear cover 60 described later is stabilized.

  As shown in FIG. 5, the front cover 23 of the housing 21 has a front hole 23A having a diameter larger than that of the shaft insertion hole 21A at the center. A plurality of projecting piece connecting holes 26 </ b> B provided in the ratchet gear 26 described below face the one end surface of the winding shaft 12 through the front surface hole 23 </ b> A.

  FIG. 6 shows a state where the front lid 23 is removed from the main body of the housing 21. As shown in the figure, a ratchet gear 26 is disposed coaxially with the shaft insertion hole 21 </ b> A (see FIG. 4) inside the housing 21. The ratchet gear 26 has a disk shape and has a shaft insertion hole 26A at the center. In addition, a plurality of rectangular projecting piece connecting holes 26 </ b> B are equally arranged around the shaft insertion hole 26 </ b> A in the ratchet gear 26. Then, the plurality of connecting projections 14A in the coupling ring 14 provided at one end of the winding shaft 12 are inserted into the plurality of protruding piece connecting holes 26B of the ratchet gear 26 through the front hole 23A of the front cover 23, As a result, the ratchet gear 26 is connected to the winding shaft 12 so as to be integrally rotatable. Hereinafter, the direction in which the ratchet gear 26 rotates together with the winding shaft 12 when the shutter curtain 15 is closed is referred to as a “closed direction”, and the direction in which the ratchet gear 26 rotates together with the winding shaft 12 when the shutter curtain 15 is opened is referred to as “ “Open direction”.

  A plurality of locking teeth 26 </ b> T protrude from the outer peripheral surface of the ratchet gear 26. Each of the locking teeth 26T is inclined so as to protrude toward the front side in the rotation direction when the ratchet gear 26 is rotated in the opening direction. More specifically, the tooth surface facing the front side when the ratchet gear 26 is rotated in the opening direction among the locking teeth 26T is centered on the first rotation support shaft 31 that is a rotation axis of the ratchet lever 30 described later. The arc-shaped locking surface 26K. On the other hand, the tooth surface facing the rear side when the ratchet gear 26 is rotated in the opening direction among the locking teeth 26T is inclined so as to be separated from the adjacent locking teeth 26T toward the tip of the locking teeth 26T. It is a sliding surface 26S. The outer edge portion of the ratchet gear 26 including the locking teeth 26T is covered with the front cover 23 (see FIG. 5).

  A plurality of locking recesses 26 </ b> C are formed at the edge portion of the shaft insertion hole 26 </ b> A of the ratchet gear 26. A plurality of arc-projecting walls 24 </ b> A provided at the distal ends of the connecting sleeves 24 are engaged with the locking recesses 26 </ b> C. The connecting sleeve 24 has a length arranged in the housing 21, and a ring-shaped interlocking gear (not shown) is integrally formed at an intermediate portion in the axial direction. The interlocking gear is disposed between the ratchet gear 26 and the rear end wall of the housing 21.

  A center pipe 24 </ b> P is provided inside the connection sleeve 24, and the center pipe 24 </ b> P is integrally formed on the rear end wall of the housing 21. The inside of the center pipe 24P is the above-described shaft insertion hole 21A, and the support shaft 11 (see FIG. 2) is inserted therethrough.

  As shown in FIG. 2, a rotary damper 29 is attached to the rear end surface 21 </ b> R of the housing 21. A gear fixed to a rotary shaft (not shown) of the rotary damper 29 is engaged with the interlocking gear through a through hole 21B (see FIG. 4) formed in the housing 21. The rotary damper 29 imparts to the ratchet gear 26 a rotational resistance that increases as the rotational speed of the ratchet gear 26 increases, thereby restricting the sudden rise of the shutter curtain 15.

  As shown in FIG. 5, a first rotation support shaft 31 and a second rotation support shaft 41 are provided between the side wall 21 </ b> S of the housing 21 and the ratchet gear 26. Both ends of the first rotation support shaft 31 are supported by the front cover 23 and the rear cover 60 of the housing 21, and the second rotation support shaft 41 is supported by the front cover 23 of the housing 21 at one end. The other end is supported by the main body of the housing 21. The first rotation support shaft 31 and the second rotation support shaft 41 extend in parallel with the rotation axis of the ratchet gear 26 and are disposed, for example, at positions separated by about 45 degrees around the rotation center of the ratchet gear 26. ing.

  In the present embodiment, the center axis of the first rotation support shaft 31 corresponds to the “first rotation axis” according to the present invention, and the center axis of the second rotation support shaft 41 corresponds to the “first rotation axis” according to the present invention. Corresponds to “two pivot axes”. The ratchet lever 30 according to the present invention is provided so as to be rotatable around the first rotation support shaft 31, while the release holding lever 40 according to the present invention rotates around the second rotation support shaft 41. It is provided to be movable.

  The ratchet lever 30 extends from the first rotation support shaft 31 toward the second rotation support shaft 41 side. Further, the base end portion of the ratchet lever 30 is provided with a base end protrusion 35 that protrudes away from the second rotation support shaft 41.

  A locking claw 32 protrudes toward the ratchet gear 26 from a position near the tip of the ratchet lever 30 on the second rotation support shaft 41 side. The locking claw 32 has a substantially triangular shape corresponding to the concave shape between the adjacent locking teeth 26T, 26T, and supports the inclined surface 32S inclined with respect to the rotation radius of the ratchet lever 30 for the first rotation. While being provided on the shaft 31 side, an arc-shaped locking surface 32 </ b> K centered on the first rotation support shaft 31 is provided on the side away from the first rotation support shaft 31. Then, when the ratchet gear 26 receives the rotational torque in the opening direction in a state where the latching claw 32 is biased so as to be pressed against the latching teeth 26T, the latching surface 32K of the latching claw 32 is any one. The ratchet lever 30 is engaged with the ratchet gear 26 in contact with the engagement surface 26K of the engagement tooth 26T, and the rotation of the ratchet gear 26 is prohibited. As a result, the shutter curtain 15 is locked so as not to open. Further, as shown in FIG. 7, when the locking claw 32 is separated from the locking teeth 26T, the ratchet lever 30 cannot be locked to the ratchet gear 26, and the rotation of the ratchet gear 26 is allowed.

  In order to urge the ratchet lever 30 toward the ratchet effective position that can be locked to the ratchet gear 26, the ratchet lever 30 is fixed to the ratchet lever 30 so as to be integrally rotatable. . As shown in FIG. 8B, the ratchet sliding contact member 80 is bent and raised from the center plate portion 83 addressed to the outer edge portion of the ratchet lever 30 facing the ratchet gear 26, and from both sides of the center plate portion 83. The first and second elastic facing pieces 81 and 82 sandwiching the ratchet gear 26 therebetween, and the mounting piece 84 extending from the first elastic facing piece 81. Further, as shown in FIG. 9A, a pair of sliding contact protrusions 91 and 92 bulging on the side approaching each other at positions facing each other of the first and second elastic facing pieces 81 and 82. Is provided.

  Specifically, the ratchet sliding contact member 80 is formed by punching and bending a sheet metal with a press, and in a state before the bending, is a substantially oval deployment member 85 shown in FIG. A U-shaped slit 86 is formed in the developing member 85 from the central portion in the long axis direction to one end side. The curved portion of the U-shaped slit 86 is disposed at one end portion in the long axis direction of the deployment member 85, and the inner region R4 of the U-shaped slit 86 is cut into a cantilever shape to attach the mounting piece 84 (FIG. 9A). ))). Further, between the first fold line L1 near the distal end of the pair of leg portions in the U-shaped portion outside the U-shaped slit 86, and the second fold line L2 shifted to the base end side thereof. The rectangular region R3 becomes the above-described center plate portion 83 (see FIG. 9A). Then, the expanding member 85 is bent at right angles at the first and second fold lines L1 and L2 so that the regions R1 and R2 on both sides of the rectangular region R3 are opposed to each other, and the first and second elastic facing pieces 81, 82 (see FIG. 9A) is formed. A circular attachment hole 87 is formed through the distal end of the attachment piece 84, and an upper elongated hole 88 extending in the width direction of the attachment piece 84 is formed at the proximal end of the attachment piece 84. ing.

  Further, before the deployment member 85 is bent at the first and second fold lines L1 and L2, the deployment member 85 is separated from the rectangular region R3 in the region R1 that becomes the first elastic facing piece 81 of the deployment member 85. A trapezoidal slidable contact protrusion 91 is press-formed at the center of the end, and a trapezoidal slidable contact is also formed at the center of the end away from the rectangular region R3 in the region R2 to be the second elastic facing piece 82. The protrusion 92 is press-molded. Here, when the developing member 85 is punched from the base metal of the sheet metal toward the front side from the back side of the paper surface of FIG. 10, the burr due to the punching is directed from the edge of the developing member 85 toward the back side of the paper surface of FIG. Protruding state. On the other hand, the sliding contact protrusions 91 and 92 both protrude so as to protrude on the opposite side to the burr.

  Also, as shown in FIG. 9B, one sliding contact projection 92 pushes the entire center of the curved portion of the second elastic facing piece 82 out of the main body portion of the second elastic facing piece 82, thereby leading the end surface. 92A, and both side portions thereof are inclined to form guide inclined portions 92B and 92B. Further, as shown in FIG. 9A, the other slidable contact protrusion 91 is one of the first elastic facing pieces 81 within a range including a region facing the front end surface 92A of one slidable contact protrusion 92. A portion is pushed out from the main body portion to form a front end surface 91A, and a guide inclined portion 91B is formed by inclining between the edge portion of the front end surface 91A and the main body portion of the first elastic facing piece 81.

  As shown in FIG. 8B, the ratchet sliding contact member 80 inserts the large diameter portion of the first rotation support shaft 31 of the ratchet lever 30 into the attachment hole 87, and attaches the attachment piece 84 to the side surface of the ratchet lever 30. And the central plate 83 is assembled in a state where it is addressed to the outer edge of the ratchet gear 30 on the ratchet gear 26 side. Thereby, the ratchet sliding contact member 80 and the ratchet lever 30 are in a state in which the ratchet lever 30 can rotate integrally. Further, when the ratchet gear 26 is pushed between the first and second elastic facing pieces 81 and 82 of the ratchet sliding contact member 80, the guide inclined portions 91B of the first and second elastic facing pieces 81 and 82, 92B and the ratchet gear 26 are in sliding contact with each other, and the first and second elastic facing pieces 81 and 82 are spread and the ratchet gear 26 is disposed between the pair of sliding contact protrusions 91 and 92.

  When the ratchet gear 26 rotates in the opening direction, the ratchet lever 30 is biased to the ratchet effective position by friction between the ratchet sliding contact member 80 and the side surface of the ratchet gear 26. At this time, the biasing force received by the ratchet lever 30 corresponds to the “positive biasing force” according to the present invention. When the ratchet gear 26 rotates in the closing direction, the ratchet lever 30 is urged to a ratchet invalid position that cannot be locked to the ratchet gear 26 due to friction between the ratchet sliding contact member 80 and the side surface of the ratchet gear 26. At this time, the urging force received by the ratchet lever 30 corresponds to the “negative urging force” according to the present invention.

  As shown in FIG. 6, the ratchet lever 30 is pivoted in a substantially columnar shape toward the rear end face 21 </ b> R side of the housing 21 at the tip position protruding from the locking claw 32 toward the second rotation support shaft 41. The interference part 33 protrudes.

  The release holding lever 40 is arranged on the rear end face 21R side from the ratchet gear 26, and as shown in FIG. 11, the action turning piece 42 protruding from the second turning support shaft 41 to the first turning support shaft 31 side. And the seesaw structure provided with the connection rotation piece 43 projected on the opposite side to the 1st rotation support shaft 31 is provided. Further, a torsion coil spring 46 (corresponding to the “standby position biasing means” of the present invention) is provided between the release holding lever 40 and the housing 21, and the release holding lever is caused by the elastic force of the torsion coil spring 46. In the movable range 40, the tip end portion of the action rotating piece 42 is biased to the standby position (position shown in FIG. 11) closest to the rotation center of the ratchet gear 26.

  A part of the movable region at the tip of the action rotating piece 42 overlaps a part of the movable region of the rotation interference unit 33. Here, when an overlapping portion between the movable region at the tip of the action rotating piece 42 and the movable region of the rotation interference unit 33 is referred to as an “interference region”, the release holding lever 40 is in the standby position (shown in FIG. 11). In the state of being arranged at the position), the distal end portion of the action rotating piece 42 is arranged at a position deviating from the interference region to the rotation center side of the ratchet gear 26. Then, while the release holding lever 40 is rotated to the lock release position (position moved in the clockwise direction from FIG. 11) on the opposite side to the standby position in the rotatable range, at the distal end portion of the action rotation piece 42. The jumping contact surface 45 facing the front side in the rotation direction presses the rotation interference portion 33 in the direction away from the ratchet gear 26, and the rotation interference portion 33 is the outermost end disposed outside the interference region. The ratchet lever 30 is rotated to the ratchet invalid position.

  The distal end of the action turning piece 42 is provided with a tip abutting surface 44 that faces the turning radius direction of the action turning piece 42 and is slightly depressed in the center. The front end abutting surface 44 is disposed in the interference region in a state where the release holding lever 40 is located at the lock release position. Then, the ratchet lever 30 receives a positive urging force from the ratchet gear 26 that rotates in the opening direction via the rotation interference unit 33, so that the ratchet invalid between the ratchet invalid position and the ratchet effective position is intermediate. When moved to the position, the tip abutting surface 44 comes into contact with the ratchet sliding contact member 80 (not shown), and the ratchet lever 30 and the release hold are held between the first and second rotation support shafts 31 and 41. The lever 40 is held in a stretched state. As a result, the ratchet lever 30 is held at the ratchet invalid position, and the unlocked state is maintained.

  As shown in FIG. 2, an operation hole 21 </ b> W is formed in the rear end surface 21 </ b> R of the housing 21 at a portion facing the movable region of the connecting rotation piece 43. The operation hole 21 </ b> W has a rectangular shape that is long in the direction in which it is in contact with and away from the support shaft 11. Further, from the opening side edge along the long side of the operation hole 21 </ b> W in the rear end surface 21 </ b> R of the housing 21, the support projecting piece 50 projects rearward, and the relay lever 51 is tiltably supported by the support projecting piece 50. Has been.

  The relay lever 51 is formed by bending a sheet metal into a crank shape, and is rotatably attached by a screw 51J in a state where the first rotating piece 51A on one end side of the bent portion is overlapped with the support protruding piece 50. Yes. Then, the tip of the first rotating piece 51A reciprocates in the longitudinal direction of the operation hole 21W. The second turning piece 51B on the other end side of the bent portion of the relay lever 51 is disposed on the outer edge side of the rear end surface 21R of the housing 21 so as to avoid the support shaft 11, and the second turning piece 51B. A wire 53 is connected to the tip portion of. The distal end of the wire 53 is connected to a lock release operation unit (not shown) provided in the room of the window to which the shutter device 10 is attached. Further, a hook 51Y is formed at the proximal end portion of the second rotating piece 51B near the bent portion. Correspondingly, a hook 51X is also formed on the rear end surface 21R of the housing 21, and a tension coil spring 52 is bridged between the hooks 51X and 51Y. As a result, the relay lever 51 is biased in a direction in which the second rotating piece 51B approaches the rear end surface 21R of the housing 21, and the distal end portion of the first rotating piece 51A is supported by the support shaft 11 in the operation hole 21W. The relay lever 51 is arranged at the origin position located at the end on the side far from the center. When the wire 53 is pulled to the side where the second rotating piece 51B is separated from the rear end surface 21R by the operation of the unlocking operation portion, the tip end portion of the second rotating piece 51B is moved to the end portion on the support shaft 11 side. In the process, the tip of the first turning piece 51A presses the connecting turning piece 43 of the release holding lever 40. As a result, the release holding lever 40 rotates from the standby position to the lock release position.

  This completes the description of the configuration of the shutter locking device 20 of the present embodiment. Next, the function and effect of the shutter locking device 20 will be described. In the shutter locking device 20 of the present embodiment, when the shutter curtain 15 is closed and the ratchet gear 26 receives torque in the closing direction, the ratchet is caused by friction between the ratchet gear 26 and the ratchet sliding contact member 80. The ratchet lever 30 that can rotate integrally with the sliding contact member 80 is biased to a ratchet invalid position that cannot be locked to the ratchet gear 26. As a result, as shown in FIG. 11, while the shutter curtain 15 is being closed, the ratchet lever 30 is no longer separated from the ratchet gear 26 and locked, and the shutter curtain 15 is closed to an arbitrary position. Can do. Furthermore, since the ratchet lever 30 and the ratchet gear 26 are not in contact with each other while the shutter curtain 15 is being closed, the silence can be improved.

  On the other hand, when the ratchet gear 26 receives the torque in the opening direction by the winding shaft 12 biased in the winding direction of the shutter curtain 15 along with stopping the closing operation of the shutter curtain 15, the ratchet gear 26 and the ratchet slide The ratchet lever 30 is urged to a ratchet effective position that can be locked to the ratchet gear 26 by friction in sliding contact with the contact member 80. As a result, as shown in FIG. 6, the ratchet lever 30 can be locked to the ratchet gear 26 and locked so as not to open the shutter curtain 15 at an arbitrary position. When releasing the lock and opening the shutter curtain 15, a lock release operation unit (not shown) in the room is pulled. At this time, once the lock release operation unit is operated, the release holding lever 40 is rotated from the standby position (position shown in FIG. 11) to the lock release position (position moved clockwise from FIG. 11). The ratchet lever 30 is moved from the ratchet effective position to the ratchet invalid position. Thereby, the shutter curtain 15 can be opened.

  Here, when the ratchet lever 30 is moved to the ratchet invalid position by the release holding lever 40, the ratchet lever 30 moves to the endmost ratchet invalid position outside the interference area with the release holding lever 40. When the shutter curtain 15 is opened, the ratchet lever 30 is moved from the ratchet invalid position to the ratchet effective position by friction between the ratchet gear 26 that rotates in the opening direction and the ratchet sliding contact member 80. Move to the middle ratchet invalid position. Then, the rotation interference portion 33 of the ratchet lever 30 abuts on the tip abutting surface 44 of the release holding lever 40 disposed at the unlocking position (not shown), and the first and second rotation support shafts. The ratchet lever 30 and the release holding lever 40 are held in a stretched state between 31 and 41. Accordingly, the ratchet lever 30 is held at the ratchet invalid position and the unlocked state is maintained, so that the shutter curtain 15 can be automatically wound. That is, the shutter curtain 15 can be automatically opened.

  That is, since the unlocking state is maintained by operating the unlocking operation unit once, it is not necessary to continue the unlocking operation by the unlocking operation unit. That is, the shutter curtain 15 can be opened only by the urging force applied to the winding shaft 12 once the unlocking operation is performed. Further, in order to cancel the unlocked state, it is only necessary to close the shutter curtain 15. Then, the ratchet lever 30 moves from the intermediate ratchet invalid position to the outermost ratchet invalid position due to friction between the ratchet gear 26 that rotates in the closing direction with the closing operation of the shutter curtain 15 and the ratchet sliding contact member 80. It moves and moves away from the release holding lever 40. Then, the release holding lever 40 returns to the standby position by the urging of the torsion coil spring 46.

  As described above, according to the shutter device 10 and the shutter lock device 20 of the present embodiment, the shutter curtain 15 can be locked to an arbitrary position so as not to be opened, and the lock is released. The operability in a series of operations for opening the shutter curtain 15 can be improved. In addition, while the unlocked state can be maintained, the unlocked state is canceled when the shutter curtain 15 is closed, so that it is possible to prevent a situation where the user forgets to lock the shutter curtain 15 after the shutter curtain 15 is closed. it can. Furthermore, since the rotary damper 29 suppresses the moving speed of the shutter curtain 15, it is possible to prevent a situation in which the shutter curtain 15 suddenly stops at the fully open position and excessive noise is generated. In addition, the operation sound in the middle toward the fully open position can be reduced.

  Moreover, the shutter locking device 20 of the present embodiment has a unit structure in which the ratchet gear 26, the ratchet lever 30 and the like are accommodated in the annular housing 21, so that the winding shaft 12 of the shutter curtain 15 is provided. And the support shaft 11 can be easily connected. That is, the housing 21 is inserted into the outside of the support shaft 11, and the uneven engagement portion on one end surface of the winding shaft 12 and the gear side uneven engagement portion of the ratchet gear 26 exposed through the front hole of the housing 21. If the housing 21 and the support shaft are fixed at the position where the projections and recesses are engaged with each other, the shutter locking device 20 is connected between the winding shaft 12 and the support shaft.

  In addition, since the shutter locking device 20 is accommodated in a space inside the wound shutter curtain 15, the space can be used effectively. Thereby, the shutter apparatus 10 can be made into a compact configuration in the lateral direction.

  Further, the ratchet sliding contact member 80 included in the shutter locking device 20 of the present embodiment bends the first and second elastic facing pieces 81 and 82 from both sides of the central plate portion 83 addressed to the outer edge portion of the ratchet lever 30. Since it has a structure that is raised and opposed, the first and second elastic facing pieces 81 and 82 can be arranged so that the surfaces on which the burrs do not protrude face each other, and the burr and ratchet gear It is possible to prevent the occurrence of abnormal sliding contact noise with H.26. In addition, the first and second elastic facing pieces 81 and 82 are paired so as to be gradually closer to each other toward the tip end portions of the pair of sliding contact projections 91 and 92 that are formed to protrude from the first and second elastic facing pieces 81 and 82. Since the guide inclined portions 91B and 92B are provided, the ratchet gear 26 can be pushed between the pair of guide inclined portions 91B and 92B to expand the first and second elastic facing pieces 81 and 82. . That is, it is no longer necessary to hold the elastic facing pieces in a state of being spread in advance as in the prior art, and the assembling work can be performed efficiently.

[Other Embodiments]
The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various other than the following can be made without departing from the scope of the invention. It can be changed and implemented.

  (1) The ratchet slidable contact member 80 of the above embodiment has, for example, a pair of female screw holes formed in the outer edge portion of the ratchet lever 30 and a pair of screw insertions in the central plate portion 83 of the ratchet slidable contact member 80. Holes may be formed, and the ratchet sliding contact member 80 may be fixed to the ratchet lever 30 with screws inserted through the screw insertion holes.

  (2) The ratchet sliding contact member according to the present invention may be attached to a ratchet lever of a ratchet mechanism (for example, a ratchet mechanism of a wire winder) other than the shutter locking device 20 described above.

DESCRIPTION OF SYMBOLS 10 Shutter device 11 Support shaft 12 Winding shaft 15 Shutter curtain 20 Shutter lock device 21 Housing 22 Fixed piece 26 Ratchet gear 26B Projection piece connection hole 29 Rotary damper 30 Ratchet lever 31 First rotation support shaft 40 Release holding lever 46 Torsion coil spring (standby position biasing means)
52 Tensile coil spring 60 Rear cover (cover)
80 Ratchet sliding contact member 81 First elastic facing piece 82 Second elastic facing piece 83 Center plate portion 84 Mounting piece 87 Mounting hole 91, 92 Sliding contact protrusion 91B, 92B Guide inclined portion

Claims (6)

The ratchet lever is supported by a ratchet lever and slidably pressed against the side surface of the ratchet gear. The friction with the ratchet gear rotating in one direction urges the ratchet lever to a ratchet effective position that can be locked to the ratchet gear. A ratchet sliding member made of a sheet metal for biasing the ratchet lever to a ratchet invalid position that cannot be locked to the ratchet gear by friction with the ratchet gear rotating in the other direction,
A central plate portion addressed to an outer edge portion facing the ratchet gear side of the ratchet lever;
A pair of elastic facing pieces that are bent and raised from both sides of the central plate portion and can sandwich the ratchet gear therebetween,
A pair of slidable contact protrusions that protrude from the mutually facing positions in the pair of elastic facing pieces to the sides approaching each other, and the tip portions abut against the ratchet gear;
A pair of guide inclined portions provided at positions facing each other in the pair of elastic facing pieces, and inclined so as to gradually approach each other toward the tip of the sliding contact projection. A ratchet sliding contact member.   The guide inclined portions are arranged on both sides in a direction of a fold line between the central plate portion and the elastic facing piece with respect to a tip portion of each sliding contact protrusion. The ratchet sliding contact member described.   One elastic facing piece has an arch structure including a pair of legs in a direction of a folding line between the elastic plate and the center plate, and the pair of legs of the metal plate constituting the ratchet sliding contact member A portion extending between the intermediate plate portion and the middle portion of the central plate portion is a mounting piece that extends flush with the base end of the other elastic facing piece, and is formed to penetrate the tip of the mounting piece. The ratchet slidable contact member according to claim 2, wherein the mounting hole can be attached by being inserted into a rotation support shaft of the ratchet lever. A ratchet gear that rotates together with the winding shaft of the shutter curtain and a first rotation axis that is parallel to the rotation axis of the ratchet gear, and allows the ratchet gear to rotate in the closing direction in which the shutter curtain is closed. On the other hand, a shutter provided with a ratchet lever that locks the shutter curtain by locking with the ratchet gear so as to prohibit rotation in the reverse opening direction, and a lock release operation unit for releasing the lock. Locking device for
The ratchet sliding contact member according to any one of claims 1 to 3 is provided to be supported by the ratchet lever, and is caused by friction between the ratchet gear rotating in the opening direction and the ratchet sliding contact member. Generating a positive urging force for urging the ratchet lever to a ratchet effective position that can be locked to the ratchet gear, and by friction between the ratchet gear rotating in the closing direction and the ratchet sliding contact member. The ratchet lever is configured to generate a negative biasing force that biases the ratchet gear to the ratchet invalid position that cannot be locked to the ratchet gear.
By operating the unlocking operation unit, the ratchet lever is turned from the ratchet effective position to the unlocking position by rotating from the standby position around the second rotation axis parallel to the first rotation axis to the lock release position. The positive urging force received by the ratchet lever is received by the tip end surface of the second rotating shaft in the turning radial direction, and the first and second rotating shafts are moved together with the ratchet lever. A release holding lever capable of holding the ratchet lever in the ratchet invalid position,
And a standby position biasing unit that biases the release holding lever to the standby position and allows the ratchet lever in the stretched state to be separated from the release holding lever by receiving the negative biasing force. A shutter locking device. The winding shaft is rotatably supported on the support shaft on the inside,
The ratchet gear is capable of inserting the support shaft, is housed in a housing together with the ratchet lever, and is provided with a cover that rotatably supports the ratchet lever on one end surface of the housing,
The cover is provided with a shaft insertion hole through which the support shaft passes, and a pair of fixed pieces that are bent and raised from the opening edge of the shaft insertion hole to the outside of the housing and face each other with the support shaft interposed therebetween. , And tighten the bolt penetrated through the support shaft and the pair of fixed pieces into a nut or a female screw hole formed in one of the fixed pieces to fix the housing to the support shaft,
The shutter locking device according to claim 4, wherein a lightening hole is formed in an intermediate portion in a bending line direction in a bent portion between each of the fixed pieces and the main body portion of the cover. The ratchet lever is supported by a ratchet lever and slidably pressed against the side surface of the ratchet gear. The friction with the ratchet gear rotating in one direction urges the ratchet lever to a ratchet effective position that can be locked to the ratchet gear. In the method of manufacturing a ratchet sliding member made of sheet metal for biasing the ratchet lever to a ratchet invalid position that cannot be locked to the ratchet gear by friction with the ratchet gear rotating in the other direction,
A central plate portion addressed to an outer edge portion facing the ratchet gear side of the ratchet lever;
A pair of elastic facing pieces projecting from both side portions of the central plate portion and sandwiching the ratchet gear therebetween,
A pair of slidable contact protrusions that protrude from the mutually facing positions in the pair of elastic facing pieces to the sides approaching each other, and the tip portions abut against the ratchet gear;
And a pair of guide inclined portions provided at positions facing each other in the pair of elastic facing pieces and gradually inclined toward each other toward the tip of the sliding contact projection. ,
After the center plate portion and the pair of elastic facing pieces are punched from the sheet metal in a state where they are continuous on the same surface, burrs that may occur at the outer edge portions of the pair of elastic facing pieces in the punching process are A method of manufacturing a ratchet sliding contact member, wherein the pair of sliding contact protrusions are bent from the central plate portion so as to protrude in opposite directions.

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