WO2011090187A1 - ハートカム式ロック装置 - Google Patents
ハートカム式ロック装置 Download PDFInfo
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- WO2011090187A1 WO2011090187A1 PCT/JP2011/051188 JP2011051188W WO2011090187A1 WO 2011090187 A1 WO2011090187 A1 WO 2011090187A1 JP 2011051188 W JP2011051188 W JP 2011051188W WO 2011090187 A1 WO2011090187 A1 WO 2011090187A1
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- WIPO (PCT)
- Prior art keywords
- pin
- cam
- locking device
- heart
- end portion
- Prior art date
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C19/00—Other devices specially designed for securing wings, e.g. with suction cups
- E05C19/02—Automatic catches, i.e. released by pull or pressure on the wing
- E05C19/022—Released by pushing in the closing direction
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B77/00—Vehicle locks characterised by special functions or purposes
Definitions
- the present invention relates to a heart cam type (heart shape cam type) locking device.
- Japanese Patent Application Laid-Open No. 2005-319948 discloses a heart cam type (heart shape cam type) locking device having a cam and a pin that moves relative to the cam.
- the conventional heart cam type locking device has the following problems.
- burrs may occur at the end of the pin on the cam side.
- the burrs When the burrs are generated, the burrs may be caught on the cam, and the pin may not be able to move smoothly with respect to the cam.
- the pin when the pin is rotatably supported by the pin support at the end opposite to the cam side, if a burr occurs at the end of the pin on the pin support, the burr becomes a pin support. There is a possibility that the pin may be caught and the pin cannot be smoothly rotated with respect to the pin support.
- An object of the present invention is to provide a heart cam type locking device that can suppress a burr generated on a pin from affecting the movement of the pin.
- the present invention for achieving the above object is as follows. (1) having a cam, a pin, and a pin support;
- the cam includes a heart-shaped inner cam, an outer cam disposed outside the inner cam, and a cam passage between the inner cam and the outer cam.
- the pin includes a first pin portion including a first end portion and moving in the cam passage, and a second pin portion including a second end portion and located outside the cam passage.
- the pin supporter supports the pin with the second pin portion, A portion of the cam facing the first end of the pin in a direction perpendicular to the axial center of the first end of the pin; and a shaft of the pin support at the second end of the pin
- a heart cam type locking device wherein a retreating portion that retreats in a direction away from the pin is provided in at least one of a portion facing the second end portion of the pin in a direction orthogonal to the core.
- the heart cam type locking device according to (1) or (2), wherein the retracting portion is retracted in a direction away from the first end of the pin.
- the receding portion is provided on the pin support,
- the heart cam type locking device according to (1) or (2), wherein the retreating portion retreats in a direction away from the second end portion of the pin.
- the retraction amount of the retreating portion is any one of (1) to (4), which is larger than the protrusion amount of the burr generated at the end portion of the pin when the pin is cut and manufactured.
- the height of the receding portion in the direction orthogonal to the receding direction is greater than the height of the burr generated at the end of the pin when the pin is cut and manufactured.
- the portion of the cam facing the first end of the pin in the direction perpendicular to the axial center at the first end of the pin, and the pin of the pin support A retreating portion that retreats in a direction away from the pin is provided in at least one of the second end of the pin and the portion that faces the second end of the pin in a direction orthogonal to the axis. Therefore, the following effects can be obtained.
- a burr generated on the pin enters the receding part. Therefore, it can suppress that the burr
- the retreating direction of the retreating portion is the direction away from the end portion of the pin corresponding to the at least one of the portions, the burr generated on the pin is surely prevented. Can enter the retreating portion.
- the retracting portion is provided on the cam, and the retracting portion is retracted in the direction away from the first end portion of the pin.
- the burr generated in the part can enter the receding part. Therefore, it is possible to suppress burrs generated at the first end portion of the pin from being caught by the cam.
- the retracting portion is provided on the pin support, and the retracting portion is retracted in the direction away from the second end portion of the pin.
- the burr generated at the end of each of the two can enter the receding portion. Therefore, it can suppress that the burr
- the burr is removed from the pin. It is possible to enter the retracted portion over the entire protruding direction.
- the height of the retreating portion in the direction perpendicular to the retreating direction is larger than the height of the burr generated at the end of the pin when the pin is cut and manufactured.
- the burr can be inserted into the receding portion over the entire height direction orthogonal to the protruding direction.
- FIG. 2 is an enlarged sectional view taken along line AA in FIG. 1. It is a top view of the cam of the heart cam type locking device of Example 1 of the present invention.
- FIG. 2 is a partial enlarged cross-sectional view of a first end portion of a pin and the vicinity thereof in FIG. 1.
- FIG. 7 is a B view of FIG. 6. It is sectional drawing which shows the modification of the heart cam type locking device of Example 2 of this invention.
- FIGS. 6 to 9 show a heart cam type locking device according to Embodiment 2 of the present invention.
- Parts common to the first embodiment of the present invention and the second embodiment of the present invention are denoted by the same reference numerals throughout the first embodiment of the present invention and the second embodiment of the present invention. First, parts common to the first embodiment of the present invention and the second embodiment of the present invention will be described.
- a heart cam type locking device (hereinafter also simply referred to as a locking device) 10 includes a cam 20, a pin 30, and a pin support 40 as shown in FIG.
- the cam 20 is made of resin, for example.
- the cam 20 includes a cam main body 21, an inner cam 22, an outer cam 23 disposed outside the inner cam 22, and a cam passage 24 between the inner cam 22 and the outer cam 23.
- the cam main body 21 has, for example, a plate shape and includes a front surface 21a and a back surface 21b. An inner cam 22 and an outer cam 23 are fixed to the cam body 21.
- the inner cam 22 has a heart shape (substantially including a heart shape).
- the heart-shaped depression faces the back side of the cam 20 (the lower side in FIG. 3).
- the direction in which the pin 30 enters and exits the cam 20 (up and down direction in FIG. 3) is the Y direction, and the direction orthogonal to the Y direction (left and right direction in FIG. 3) is the X direction.
- the center of the pin 30 when the pin 30 is positioned in the heart-shaped depression is the origin of coordinates
- the back side direction of the cam 20 is the Y positive direction with respect to the origin
- the cam 20 of the pin 30 is relative to the Y axis. Let the entrance side to be X positive direction.
- the inner cam 22 A first cam position 22a at a position separated from the origin in the negative Y direction by the radius of the pin 30; A second cam position 22b which is an end of the inner cam 22 in the X positive and Y positive directions with respect to the first cam position 22a; A third cam position 22c which is an end of the inner cam 22 in the X negative and Y positive directions with respect to the first cam position 22a; A fourth cam position 22d which is an end of the inner cam 22 in the Y negative direction with respect to the first cam position 22a; Have
- the inner cam 22 A first cam surface 22e connecting the first cam position 22a and the second cam position 22b; A second cam surface 22f connecting the second cam position 22b and the fourth cam position 22d; A third cam surface 22g connecting the fourth cam position 22d and the third cam position 22c; A fourth cam surface 22h connecting the third cam position 22c and the first cam position 22a; Have
- the outer cam 23 is A fifth cam position 23a which is an inner wall convex curve portion in the X positive and Y negative directions with respect to the origin; A sixth cam position 23b which is an inner wall concave bent portion which is substantially in the same X direction as the fifth cam position 23a and which is in the Y positive direction with respect to the fifth cam position 23a; A seventh cam position 23c which is an inner wall convex curve portion in the X negative and Y positive directions with respect to the sixth cam position 23b; An eighth cam position 23d which is an inner wall concave bending portion in the Y positive direction with respect to the seventh cam position 23c at a position separated from the seventh cam position 23c by the radius of the pin 30 in the X negative direction.
- a ninth cam position 23e which is an inner wall convex bent portion in the Y negative direction with respect to the eighth cam position 23d at a position separated in the X negative direction by the radius of the pin 30 from the eighth cam position 23d;
- a tenth cam position 23f that is an inner wall convex curve portion in the X negative and Y positive directions with respect to the ninth cam position 23e;
- An eleventh cam position 23g which is an inner wall concave bent portion in the Y positive direction with respect to the tenth cam position 23f at a position spaced in the X negative direction by the radius of the pin 30 from the tenth cam position 23f;
- a twelfth cam position 23h which is an inner wall concave bent portion in the Y negative direction with respect to the eleventh cam position 23g at a position spaced in the X negative direction by the radius of the pin 30 from the eleventh cam position 23g;
- a thirteenth cam position 23i that is an inner wall convex curve portion in the X positive and
- the fifth cam position 23a is located in the X positive and Y negative directions with respect to the second cam position 22b.
- the sixth cam position 23b is located in the X positive direction and the Y positive direction with respect to the second cam position 22b.
- the seventh cam position 23c, the eighth cam position 23d, and the ninth cam position 23e are located in the X positive direction and the Y positive direction with respect to the first cam position 22a, and with respect to the second cam position 22b.
- the tenth cam position 23f and the eleventh cam position 23g are located in the X negative and Y positive directions with respect to the third cam position 22c.
- the twelfth cam position 23h is substantially in the same position as the fourth cam position 22d in the Y direction, and is located in a position separated from the fourth cam position 22d by the diameter of the pin 30 in the X negative direction.
- the thirteenth cam position 23i is located in the X positive and Y negative directions with respect to the fourth cam position 22d.
- the outer cam 23 is A fifth cam surface 23j extending from the fifth cam position 23a in the X positive and Y negative directions to the doorway 25 of the pin 30 to the cam 20, A sixth cam surface 23k connecting the fifth cam position 23a and the sixth cam position 23b; A seventh cam surface 231 connecting the sixth cam position 23b and the seventh cam position 23c; An eighth cam surface 23m connecting the seventh cam position 23c and the eighth cam position 23d; A ninth cam surface 23n connecting the eighth cam position 23d and the ninth cam position 23e; A tenth cam surface 23o connecting the ninth cam position 23e and the tenth cam position 23f; An eleventh cam surface 23p connecting the tenth cam position 23f and the eleventh cam position 23g; A twelfth cam surface 23q connecting the eleventh cam position 23g and the twelfth cam position 23h; A thirteenth cam surface 23r connecting the twelfth cam position 23h and the thirteenth cam position 23i; A fourteenth cam surface 23s extending from the thirteenth cam position 23i to the door
- the cam passage 24 is a passage through which the pin 30 passes.
- the width of the cam passage 24 is larger than the diameter of the pin 30.
- the pin 30 is made of metal.
- the pin 30 has a one-part configuration.
- the pin 30 is manufactured by cutting a pin material (not shown).
- the cross-sectional shape of the pin 30 is, for example, a circle.
- the pin 30 includes a first pin portion 31 that includes a first end portion 31a and moves within the cam passage 24, and a second end portion 32a that is located outside the cam passage 24. A second pin portion 32.
- the pin 30 moves relative to the cam 20.
- the pin 30 is in sliding contact with the inner cam 22 and the outer cam 23 at the first portion 31.
- the shape of the pin 30 may be linear (including a substantially linear shape) as shown in FIG. 1, may be U-shaped (including a substantially U-shape) as shown in FIG. Other shapes may be used.
- the axis P1 at the first end 31a of the pin 30 and the axis P2 at the second end 32a of the pin 30 are I'm doing it.
- the axis P1 at the first end 31a of the pin 30 and the axis P2 at the second end 32a of the pin 30 are: They are different and parallel to each other.
- the pin support 40 may be a one-part configuration or a multi-part configuration.
- the pin support 40 supports the pin 30 with the second pin portion 32.
- the pin support 40 may support the pin 30 as shown in FIG. 1 so as to be fixed (incapable of relative movement), and to support the rotation of the pin 30 as in FIG. 6 (relatively movable). It may be.
- the pin support 40 supports the pin 30 so as to be rotatable
- the pin support 40 supports the pin 30 so as to be rotatable around the axis P2.
- the retraction part 50 is provided in at least one member of the cam 20 and the pin support tool 40.
- the retreating portion 50 faces the first end portion 31 a of the pin 30 in a direction orthogonal to the axis P ⁇ b> 1 at the first end portion 31 a of the pin 30 of the cam 20 ( The portion 20a that can be opposed) and the portion of the pin support 40 that faces (can be opposed to) the second end 32a of the pin 30 in a direction perpendicular to the axis P2 at the second end 32a of the pin 30. 40a and at least one of them is set back in the direction away from the pin 30.
- FIG. 1 shows a case where the retracting portion 50 is provided only in the portion 20a
- FIG. 6 shows a case where the retracting portion 50 is provided in both the portion 20a and the portion 40a.
- the retracting direction of the retracting portion 50 is a direction away from the end of the pin 30 on the side corresponding to the at least one of the portions.
- the retracting portion 50 When the retracting portion 50 is provided on the cam 20, the retracting portion 50 is retracted in a direction away from the first end portion 31 a of the pin 30.
- the retracting portion 50 When the retracting portion 50 is provided on the cam 20, the retracting portion 50 is provided on the inner cam 22 and / or the outer cam 23 of the cam 20.
- the retracting portion 50 When the retracting portion 50 is provided on the cam 20, the retracting portion 50 may be provided on the entire portion 20 a of the cam 20 or only on a part (for example, only on a part of the inner cam 22). Good.
- the inner cam 22 may be formed integrally with the cam body portion 21, but is formed separately from the cam body portion 21 and fixed to the cam body portion 21. It is desirable that This is because even when the distance between the inner cam 22 and the outer cam 23 is relatively narrow, the retracted portion 50 can be easily formed in the inner cam 22 and / or the outer cam 23.
- the inner cam 22 is formed separately from the cam main body 21 and is fixedly attached to the cam main body 21, the inner cam 22 includes a column portion 22 t that is inserted into a hole 21 c provided in the cam main body 21. . Both the hole 21c and the column portion 22t have a non-circular cross-section (for example, a triangle or more polygon), and the column portion 22t is not rotatable within the hole 21c.
- the retracting portion 50 When the retracting portion 50 is provided on the pin support 40, the retracting portion 50 is retracted in a direction away from the second end portion 32 a of the pin 30.
- the retreat part 50 When the retreat part 50 is provided in the pin support tool 40, the retreat part 50 may be provided in the whole or only part of the portion 40a of the pin support tool 40.
- the retraction amount (depth) D of the retreat portion 50 is determined when the pin 30 is cut and manufactured (when a pin material (not shown) is cut and the pin 30 is manufactured). This is larger than the protrusion amount D1 of the burr 60 generated at the end portions 31a and 32a.
- the height H of the receding portion 50 in the direction orthogonal to the receding direction is larger than the height H1 of the burr 60 generated at the end portions 31a and 32a of the pin 30 when the pin 30 is cut and manufactured.
- At least one of the portion 20a of the cam 20 and the portion 40a of the pin support 40 is arranged in a direction away from the end of the pin 30 on the side corresponding to the at least one portion.
- a receding portion 50 that recedes is provided. Therefore, the burr 60 generated in the pin 30 enters the retreating part 50. Therefore, it is possible to suppress the burr 60 generated in the pin 30 from being caught (contacted) by a member (at least one of the cam 20 and the pin support 40) provided with the retreating part 50. Therefore, it is possible to suppress the burr 60 generated on the pin 30 from affecting the movement of the pin 30.
- the retreat part 50 is provided, the deburring operation
- the retracting portion 50 is provided in the cam 20 and the retracting portion 50 is retracted in the direction away from the first end portion 31 a of the pin 30, the burr 60 generated at the first end portion 31 a of the pin 30 is removed. It can enter into the retreat part 50. Therefore, the burr 60 generated at the first end portion 31 a of the pin 30 can be suppressed from being caught by the cam 20.
- the retracting portion 50 is provided in the pin support 40 and the retracting portion 50 is retracted in the direction away from the second end portion 32 a of the pin 30, a burr generated at the second end portion 32 a of the pin 30 is formed. 60 can enter the retreating portion 50. Therefore, it is possible to suppress the burr 60 generated at the second end portion 32 a of the pin 30 from being caught by the pin support 40.
- the burr 60 Since the retraction amount D of the retreating portion 50 is larger than the protrusion amount D1 of the burr 60 generated at the end portion of the pin 30 when the pin 30 is cut and manufactured, the burr 60 is disposed in the whole protruding direction from the pin 30. It can be made to enter into the retreat part 50 over.
- the burr 60 protrudes. It can enter into the retreat part 50 over the whole height direction orthogonal to the direction.
- FIG. 1 In the first embodiment of the present invention, as shown in FIG. 1, the pin 30 is linear, and the shaft core P ⁇ b> 1 at the first end portion 31 a of the pin 30 and the shaft core P ⁇ b> 2 at the second end portion 32 a of the pin 30.
- the pin support 40 fixes and supports the pin 30.
- the retreating part 50 is provided only on the cam 20, and is not provided on the pin support 40.
- the retracting portion 50 is provided on the entire outer peripheral surface of the inner cam 22 and the entire inner peripheral surface of the outer cam 23 excluding the end portion on the doorway 25 side of the fourteenth cam surface 23 s. It has been.
- FIG. 5 shows a case where the locking device 10 according to the first embodiment of the present invention is provided in a vehicle storage device (overhead console device) 1 arranged on the ceiling of the passenger compartment.
- UP indicates the upper side
- FR indicates the front side of the vehicle.
- the vehicle storage device 1 includes a fixing member 2 fixedly attached to the ceiling of the passenger compartment, an upper position (position shown in FIG. 5) 3a around the rotation axis P with respect to the fixing member 2, and a lower position from the upper position 3a. And a rotating member 3 that can be rotated to a lower position (not shown) that has been rotated.
- the cam 20 of the locking device 10 is fixed to the rotating member 3, and the pin support 40 of the locking device 10 is provided on the fixing member 2 so as to be rotatable around the rotation axis P ⁇ b> 3. .
- the locking device 10 is provided to hold the rotating member 3 at the upper position 3a with respect to the fixing member 2.
- the pin 30 is U-shaped as shown in FIG. 6, and the shaft core P ⁇ b> 1 at the first end portion 31 a of the pin 30 and the shaft core at the second end portion 32 a of the pin 30. Unlike P2, they are parallel to each other.
- the pin support 40 supports the pin 30 so as to be rotatable around the second axis P2.
- the pin support 40 includes a first component 41 and a second component 42 that cannot move with respect to the first component 41.
- the pin support 40 supports the pin 30 with the first component 41 and the second component 42 sandwiched therebetween. As shown in FIG.
- At least one of the first component 41 and the second component 42 is used to reduce the contact area with the pin 30 and reduce the sliding resistance with the pin 30.
- a plurality of ribs 43 may be provided.
- FIG. 8 shows a case where the rib 43 is provided only on the first component 41.
- the retracting portion 50 is provided on both the cam 20 and the pin support 40. As shown in FIG. 7, the retreating portion 50 provided on the cam 20 is provided on the entire outer peripheral surface of the inner cam 22 and the inner peripheral surface of the outer cam 23.
- the retraction part 50 provided in the pin support 40 is provided in both the 1st component 41 and the 2nd component 42, as shown in FIG.
- FIG. 9 shows a case where the locking device 10 according to the second embodiment of the present invention is incorporated in the holding device 4 provided in the vehicle storage device (overhead console device) 1 disposed on the ceiling of the passenger compartment.
- UP indicates the upper side
- FR indicates the front side of the vehicle.
- the vehicular storage device 1 includes a fixing member 2 fixedly attached to the ceiling of the passenger compartment, and an engaging portion 3b. ) 3a and a rotating member 3 that can rotate to a lower position (not shown) that rotates downward from the upper position 3a.
- the holding device 4 is provided to hold the rotating member 3 at the upper position 3 a with respect to the fixed member 2.
- the holding device 4 includes a housing 5 that is attached to the fixing member 2, a cap 6 that covers the housing 5, a knob 7 that can move up and down relative to the housing 5, and the housing 5 that moves along with the vertical movement of the knob 7.
- a first moving member 8 that moves up and down, a second moving member 9 that moves in a direction perpendicular to the up and down direction with respect to the housing 5 by moving the first moving member 8 up and down with respect to the housing 5;
- a forward position (position shown in FIG.
- the rotating member 3 is fixed by pressing the rotating member 3 and moving the second moving member 9 from the forward movement position 9 a to the backward position to release the engagement between the second moving member 9 and the rotating member 3.
- the member 2 can be rotated from the upper position 3a to the lower position (not shown).
- the cam 20 of the locking device 10 is provided on the first moving member 8, and the first component 41 of the pin support 40 of the locking device 10 is provided on the cap 6.
- the locking device 10 pushes the rotating member 3 upward to release the engagement between the second moving member 9 and the rotating member 3 and rotate the rotating member 3 from the upper position 3a to the lower position.
- the first moving member 8 is pushed until the rotating member 3 is pushed upward from the lower position to the upper position 3 a and the knob 7 and the first moving member 8 are moved upward with respect to the housing 5 by the rotating member 3.
- the second moving member 9 is provided to prevent the second moving member 9 from returning from the retracted position to the advanced position 9a.
- the locking device 10 is provided, when the rotating member 3 at the lower position is rotated to the upper position 3a, the engaging portion 3b of the rotating member 3a and the second moving member 9 come into contact with each other. It is possible to prevent the sound from being generated by the contact between the engaging portion 3b of the rotating member 3a and the second moving member 9.
Abstract
Description
ピンを切断して製造するときにピンのカム側の端部にバリが生じる場合がある。バリが生じると、バリがカムに引っ掛かり、ピンがカムに対して滑らかに動くことができなくなるおそれがある。また、ピンがカム側と反対側の端部でピン支持具に回動可能に支持されている場合には、ピンのピン支持具側の端部にバリが生じると、バリがピン支持具に引っ掛かり、ピンがピン支持具に対して滑らかに回動できなくなるおそれがある。
(1) カムと、ピンと、ピン支持具と、を有し、
前記カムは、ハート形状の内側カムと、該内側カムの外側に配置される外側カムと、前記内側カムと前記外側カムとの間のカム通路と、を備えており、
前記ピンは、第1の端部を含み前記カム通路内を移動する第1のピン部分と、第2の端部を含み前記カム通路の外部に位置する第2のピン部分と、を備えており、
前記ピン支持具は、前記ピンを前記第2のピン部分で支持しており、
前記カムの、前記ピンの第1の端部における軸芯と直交する方向に前記ピンの第1の端部に対向する部分と、前記ピン支持具の、前記ピンの第2の端部における軸芯と直交する方向に前記ピンの第2の端部に対向する部分と、の少なくともいずれか一方の部分に、前記ピンから離れる方向に後退する後退部が設けられている、ハートカム式ロック装置。
(2) 前記後退部の後退方向は、前記ピンの、前記少なくともいずれか一方の部分に対応する側の端部から離れる方向である、(1)記載のハートカム式ロック装置。
(3) 前記後退部は前記カムに設けられており、
前記後退部は、前記ピンの第1の端部から離れる方向に後退している、(1)または(2)記載のハートカム式ロック装置。
(4) 前記後退部は前記ピン支持具に設けられており、
前記後退部は、前記ピンの第2の端部から離れる方向に後退している、(1)または(2)記載のハートカム式ロック装置。
(5) 前記後退部の後退量は、前記ピンを切断して製造するときに該ピンの端部に生じるバリの突出量より大である、(1)~(4)のいずれか1つに記載のハートカム式ロック装置。
(6) 前記後退部の後退方向と直交する方向の高さは、前記ピンを切断して製造するときに該ピンの端部に生じるバリの高さより大である、(1)~(5)のいずれか1つに記載のハートカム式ロック装置。
ピンに生じるバリが後退部内に入り込む。そのため、ピンに生じるバリが、後退部が設けられる部材に引っ掛かること(接触すること)を抑制できる。よって、ピンに生じるバリがピンの動きに影響を及ぼすことを抑制できる。
図1~図5は、本発明実施例1のハートカム式ロック装置を示しており、図6~図9は、本発明実施例2のハートカム式ロック装置を示している。
本発明実施例1と本発明実施例2にわたって共通する部分には、本発明実施例1と本発明実施例2にわたって共通する符号を付してある。
まず、本発明実施例1と本発明実施例2にわたって共通する部分を説明する。
原点からY負方向にほぼピン30の半径だけ隔たった位置にある第1のカム位置22aと、
第1のカム位置22aに対してX正、Y正方向にある内側カム22の端部である第2のカム位置22bと、
第1のカム位置22aに対してX負、Y正方向にある内側カム22の端部である第3のカム位置22cと、
第1のカム位置22aに対してY負方向にある内側カム22の端部である第4のカム位置22dと、
を有する。
第1のカム位置22aと第2のカム位置22bとを繋ぐ第1のカム面22eと、
第2のカム位置22bと第4のカム位置22dとを繋ぐ第2のカム面22fと、
第4のカム位置22dと第3のカム位置22cとを繋ぐ第3のカム面22gと、
第3のカム位置22cと第1のカム位置22aとを繋ぐ第4のカム面22hと、
を有する。
原点に対してX正、Y負方向にある内壁面凸曲がり部である第5のカム位置23aと、
第5のカム位置23aとX方向でほぼ同位置にあり第5のカム位置23aに対してY正方向にある内壁面凹曲がり部である第6のカム位置23bと、
第6のカム位置23bに対してX負、Y正方向にある内壁面凸曲がり部である第7のカム位置23cと、
第7のカム位置23cからほぼピン30の半径だけX負方向に隔たった位置で第7のカム位置23cに対してY正方向にある内壁面凹曲がり部である第8のカム位置23dと、
第8のカム位置23dからほぼピン30の半径だけX負方向に隔たった位置で第8のカム位置23dに対してY負方向にある内壁面凸曲がり部である第9のカム位置23eと、
第9のカム位置23eに対してX負、Y正方向にある内壁面凸曲がり部である第10のカム位置23fと、
第10のカム位置23fからほぼピン30の半径だけX負方向に隔たった位置で第10のカム位置23fに対してY正方向にある内壁面凹曲がり部である第11のカム位置23gと、
第11のカム位置23gからほぼピン30の半径だけX負方向に隔たった位置で第11のカム位置23gに対してY負方向にある内壁面凹曲がり部である第12のカム位置23hと、
第12のカム位置23hに対してX正、Y負方向にある内壁面凸曲がり部である第13のカム位置23iと、
を有する。
第6のカム位置23bは、第2のカム位置22bに対してX正、Y正方向に位置する。
第7のカム位置23c、第8のカム位置23dおよび第9のカム位置23eは、第1のカム位置22aに対してX正、Y正方向に位置し、第2のカム位置22bに対してX負、Y正方向に位置する。
第10のカム位置23fと第11のカム位置23gは、第3のカム位置22cに対してX負、Y正方向に位置する。
第12のカム位置23hは、Y方向で第4のカム位置22dとほぼ同位置にあり第4のカム位置22dに対してほぼピン30の直径だけX負方向に隔たった位置にある。
第13のカム位置23iは、第4のカム位置22dに対してX正、Y負方向に位置する。
第5のカム位置23aからX正、Y負方向に、ピン30のカム20への出入り口25まで延びる第5のカム面23jと、
第5のカム位置23aと第6のカム位置23bとを繋ぐ第6のカム面23kと、
第6のカム位置23bと第7のカム位置23cとを繋ぐ第7のカム面23lと、
第7のカム位置23cと第8のカム位置23dとを繋ぐ第8のカム面23mと、
第8のカム位置23dと第9のカム位置23eとを繋ぐ第9のカム面23nと、
第9のカム位置23eと第10のカム位置23fとを繋ぐ第10のカム面23oと、
第10のカム位置23fと第11のカム位置23gとを繋ぐ第11のカム面23pと、
第11のカム位置23gと第12のカム位置23hとを繋ぐ第12のカム面23qと、
第12のカム位置23hと第13のカム位置23iとを繋ぐ第13のカム面23rと、
第13のカム位置23iからX負、Y負方向に、出入り口25まで延びる第14のカム面23sと、
を有する。
(i) ピン30をカム20に対してカム20の奥側(図3における下側、Y正方向)に移動させると、ピン30がカム20をX方向に移動させながら、または、ピン30がカム20によってX方向に移動させられながら、ピン30がカム20に対してa位置からb位置に移動する。
(ii) ピン30がb位置に移動した後、ピン30をカム20の奥側に移動させていた荷重を取り去ると、ピン30は、ピン30がカム20をX方向に移動させながら、または、ピン30がカム20によってX方向に移動させられながら、カム20に対してb位置からc位置に移動する。
(iii) ピン30がc位置に位置するとき、ピン30はカム20(内側カム22)に係合しており、ロック装置10のロックがかかっている。
(iv) ピン30がc位置に位置する状態で、ピン30をカム20に対してカム20の奥側に移動させると、ピン30がカム20をX方向に移動させながら、または、ピン30がカム20によってX方向に移動させられながら、ピン30がカム20に対してc位置からd位置に移動する。
(v) ピン30がd位置に移動した後、ピン30をカム20の奥側に移動させていた荷重を取り去ると、ピン30は、ピン30がカム20をX方向に移動させながら、または、ピン30がカム20によってX方向に移動させられながら、カム20に対してd位置からa位置に移動する。
また、後退部50が設けられているため、ピン30のバリ取り作業が不要である。そのため、ピン30のバリ取り作業を要する場合に比べて、ピンの生産性が向上する。
〔実施例1〕(図1~図5)
本発明実施例1では、図1に示すように、ピン30は直線状であり、ピン30の第1の端部31aにおける軸芯P1とピン30の第2の端部32aにおける軸芯P2とが一致している。
ピン支持具40は、ピン30を固定して支持している。
後退部50は、カム20のみに設けられており、ピン支持具40には設けられていない。後退部50は、図2に示すように、内側カム22の外周面の全体と、第14のカム面23sの出入り口25側の端部を除く外側カム23の内周面の全体とに、設けられている。
ロック装置10のカム20は、回動部材3に固定して設けられており、ロック装置10のピン支持具40は、固定部材2に回動軸芯P3まわりに回動可能に設けられている。ロック装置10は、回動部材3を固定部材2に対して上位置3aに保持するために設けられる。
本発明実施例2では、ピン30は、図6に示すように、U字状であり、ピン30の第1の端部31aにおける軸芯P1とピン30の第2の端部32aにおける軸芯P2とは異なっており互いに平行である。
ピン支持具40は、ピン30を、第2の軸芯P2まわりに回動可能に支持している。ピン支持具40は、第1の構成部品41と第1の構成部品41に対して移動不能な第2の構成部品42とを備えている。ピン支持具40は、ピン30を第1の構成部品41と第2の構成部品42とで挟んで支持している。第1の構成部品41と第2の構成部品42の少なくともいずれか一方には、図8に示すように、ピン30との接触面積を低減させてピン30との摺動抵抗を低減させるために、複数のリブ43が設けられていてもよい。なお、図8は、第1の構成部品41のみにリブ43が設けられる場合を示している。
後退部50は、カム20とピン支持具40の両方に設けられている。カム20に設けられる後退部50は、図7に示すように、内側カム22の外周面と外側カム23の内周面の全体に設けられている。ピン支持具40に設けられる後退部50は、図6に示すように、第1の構成部品41と第2の構成部品42の両方に設けられている。
回動部材3を上方向に押してノブ7と第1の移動部材8をハウジング5に対して上方に移動させることで、第2の移動部材9をハウジング5に対して回動部材3の係合部3bに係合可能な前進位置(図9に示す位置)9aと回動部材3の係合部3bに係合不能な後退位置(図9において前進位置9aから右側に移動した位置、図示略)とに移動させることができる。
回動部材3を押して第2の移動部材9を前進位置9aから後退位置に移動させて第2の移動部材9と回動部材3との係合を解除させることで、回動部材3を固定部材2に対して上位置3aから図示略の下位置まで回動させることができる。
20 カム
21 カム本体部
22 内側カム
23 外側カム
24 カム通路
30 ピン
31 第1のピン部分
31a 第1の端部
32 第2のピン部分
32a 第2の端部
40 ピン支持具
41 第1の構成部品
42 第2の構成部品
50 後退部
60 バリ
P1 ピンの第1の端部における軸芯
P2 ピンの第2の端部における軸芯
Claims (6)
- カムと、ピンと、ピン支持具と、を有し、
前記カムは、ハート形状の内側カムと、該内側カムの外側に配置される外側カムと、前記内側カムと前記外側カムとの間のカム通路と、を備えており、
前記ピンは、第1の端部を含み前記カム通路内を移動する第1のピン部分と、第2の端部を含み前記カム通路の外部に位置する第2のピン部分と、を備えており、
前記ピン支持具は、前記ピンを前記第2のピン部分で支持しており、
前記カムの、前記ピンの第1の端部における軸芯と直交する方向に前記ピンの第1の端部に対向する部分と、前記ピン支持具の、前記ピンの第2の端部における軸芯と直交する方向に前記ピンの第2の端部に対向する部分と、の少なくともいずれか一方の部分に、前記ピンから離れる方向に後退する後退部が設けられている、ハートカム式ロック装置。 - 前記後退部の後退方向は、前記ピンの、前記少なくともいずれか一方の部分に対応する側の端部から離れる方向である、請求項1記載のハートカム式ロック装置。
- 前記後退部は前記カムに設けられており、
前記後退部は、前記ピンの第1の端部から離れる方向に後退している、請求項1または請求項2記載のハートカム式ロック装置。 - 前記後退部は前記ピン支持具に設けられており、
前記後退部は、前記ピンの第2の端部から離れる方向に後退している、請求項1または請求項2記載のハートカム式ロック装置。 - 前記後退部の後退量は、前記ピンを切断して製造するときに該ピンの端部に生じるバリの突出量より大である、請求項1~請求項4のいずれか1項に記載のハートカム式ロック装置。
- 前記後退部の後退方向と直交する方向の高さは、前記ピンを切断して製造するときに該ピンの端部に生じるバリの高さより大である、請求項1~請求項5のいずれか1項に記載のハートカム式ロック装置。
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH03197782A (ja) * | 1989-12-25 | 1991-08-29 | Nifco Inc | ラッチ装置 |
JP2008296616A (ja) * | 2007-05-29 | 2008-12-11 | Toyota Motor Corp | ハートカム式ロック装置 |
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JPS60126674U (ja) * | 1984-02-06 | 1985-08-26 | 株式会社東芝 | 摺動保持装置 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPH03197782A (ja) * | 1989-12-25 | 1991-08-29 | Nifco Inc | ラッチ装置 |
JP2008296616A (ja) * | 2007-05-29 | 2008-12-11 | Toyota Motor Corp | ハートカム式ロック装置 |
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