JP2014122516A - Catch lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a catch lock which has relatively compact and simple constitution and includes an easy-to-attach/detach spring member.SOLUTION: A latch assembly 14 includes a fixed member 16, an operation lever 18 which is connected in a swivel state to nearby an end of the fixed member 16 on a first side 11 through a shaft 26, and a movable member 21 which is moved in a longitudinal direction Y, a height direction Z, and an oblique direction through swivel operation of the operation lever 18, and to which a latch part 20 extending in a lateral direction X is fixed. On at least one of both sides of the movable member 21, a spring member 22 is arranged in a tensile state which has one end locked to the latch part 20 and the other end fixed to the movable member 21 and extends in the longitudinal direction Y.

Description

  The present invention relates to a catch lock used for a storage box of a switchboard or the like.

  The conventional catch lock disclosed in Patent Document 1 includes a base plate attached to the main body of the housing, a keeper attached to the lid of the housing, an operation lever fixed to the base plate so as to be pivotable, It has a latch arm attached to both sides, and a latch part located at the tip of the latch arm.

JP 2010-95929 A

  Referring to FIG. 10, in the catch lock 110 disclosed in Patent Document 1, the latch arm 145 of the latch assembly 114 includes a pair of plate-like first arms 145 a attached to both sides of the latch portion 120, and a first arm 145 a. In a compressed state between a pair of plate-like second arms 145b fixed to overlap each other in the width direction of the arm 145a and the catch lock 110, and spring receiving projections 147, 148 of the first and second arms 145a, 145b. A pair of compression coil springs 121 are disposed. The fixing portion 115a of the keeper 115 of the catch lock 110 is fixed to the lid 113a of the housing 113, and the base portion 125 of the latch assembly 114 to which the operation lever 118 is pivotably attached is fixed to the main body 113b of the housing 113. The

  According to the catch lock 110 disclosed in Patent Document 1, in a state where the latch portion 120 is hooked on the receiving portion 115 b of the keeper 115, the operation lever 118 is attached to the housing 113 side by the elastic force of the pair of compression coil springs 121. Therefore, the main body 113b and the lid body 113a of the housing are tightened, and the locked state is firmly maintained.

  However, since the compression coil spring 121 has an overlapping portion of the first and second arms 145a and 145b serving as coil axes at the center thereof, a coil spring 121 having a relatively large diameter must be used. The overall width of the catch lock 110 is relatively large. In addition, it is difficult to place the compression coil spring 121 in a compressed state between the spring receiving projections 147 and 148 of the first and second arms 145a and 145b, which requires a mechanical device and a manufacturing process.

  The subject of this invention is providing the catch lock which has a comparatively compact and simple structure and has a spring member with easy attachment or detachment.

  In order to solve the above-mentioned problems, the present invention is directed to a latch assembly having a vertical direction and a horizontal direction, a height direction orthogonal to them, a first side and a second side, and a keeper. It is a catch tablet containing.

The present invention is characterized in that the latch assembly includes a fixing member, an operation lever that is pivotably connected to the vicinity of an end of the fixing member on the first side, and the fixing member on the second side. The end portion on the first side is supported so as to be slidable and turnable in the vertical direction through a shaft that is slidably inserted in the guide groove hole that is located in the vicinity of the end portion of the longitudinal direction and is slidable in the longitudinally long guide groove hole. A movable member having a latch portion extending in the lateral direction,
At least one of both sides of the movable member facing each other in the lateral direction is provided with a spring member having one end locked to the latch portion and the other end fixed to the movable member and extending in the longitudinal direction. It is arranged in a tension state.

  As one of preferred embodiments of the present invention, the spring member has a coil part that can be expanded and contracted, and an arm part that extends straight from the coil part in the longitudinal direction, and is located at the tip of the arm part. A hook-shaped hook portion is locked to the latch portion, and a hook-shaped hook portion extending from the coil portion to the second side is fixed to the movable member.

  As another preferred embodiment of the present invention, the fixing member extends from the first side to the second side on both sides of the base portion and protrudes in the height direction and has a top edge. A side wall that extends from the vicinity of the end portion on the second side to the first side, and is slanted toward the top edge and to the first side. The guide groove formed from an inclined portion extending in a direction, having a first end and a second end, the first end being pivotably connected to the operation lever member via a pin In addition, the second end portion includes a link member that is pivotally connected to the fixing member via the shaft that is inserted into the guide groove hole.

  As still another preferred embodiment of the present invention, the slide pin further includes a leaf spring fixed to the base portion of the fixing member, and the leaf spring enters the inclined portion of the guide groove hole. Is pushed upward.

  According to still another preferred embodiment of the present invention, in a locked state, a transverse covering portion covering the keeper and a latch portion locked thereto, and both side covering portions extending from the first side to the second side. And the operation lever is pivotably positioned between the two side covering portions.

  According to the present invention, in the latch assembly, at least one of the both sides of the movable member has one end locked to the latch portion and the other end fixed to the movable member, and the spring member extending in the longitudinal direction is tensioned. Since it is arranged in a state, assembly work is easier than in the case where the compression coil spring is arranged, the number of parts can be suppressed, and the size can be made relatively compact.

The figure which shows the state which attached and locked the catch lock in 1st Embodiment to a housing | casing. The figure which shows the unlocking state of a catch lock. The disassembled perspective view of a catch lock. IV-IV sectional view taken on the line of FIG. The figure which shows a mode when an operation lever is turned. The figure which shows the state which attached and locked the catch lock in 2nd Embodiment to a housing | casing. The figure which looked at the state which isolate | separated the latch assembly and the cover member from the back surface. The figure which looked at the catch lock in the locked state which shows a housing | casing with a virtual line from the back surface. The figure which shows the unlocking state of a catch lock. The figure which shows the state which attached and locked the conventional catch lock to the housing | casing which shows a housing | casing with a virtual line.

  1 to 3, the catch lock 10 has a lateral direction X, a longitudinal direction Y, a height direction Z, and a central axis P that bisects the dimension in the lateral direction X. The catch lock 10 is substantially symmetric with respect to the central axis P, and is opposed to the first side 11 and the second side 12 in the longitudinal direction Y, the latch assembly 14 fixed to the main body 13a of the housing 13, and the housing Keeper 15 fixed to 13 lid bodies 13b.

  The latch assembly 14 includes a fixing member 16, an operation lever 18 connected to the fixing member 16 via a shaft 17 so as to be capable of turning, a turning operation of the operation lever 18, and a longitudinal direction Y via a link member 19. And a movable member 21 to which a rod-shaped latch portion 20 is fixed, which is moved in the height direction Z and in an oblique direction. Spring members 22 are arranged on both sides of the movable member 21, the hook 22 a on the first side 11 of the spring member 22 is locked to the latch portion 20, and the fixed portion 23 on the second side 12 is attached to the movable member 21. Fixed. As shown in FIG. 2, when the operator turns the operation lever 18 in the R direction, the latch portion 20 of the movable member 21 is separated from the receiving portion 15 b of the keeper 15 and unlocked.

  Referring to FIG. 3, the fixing member 16 includes a base portion 25 and side walls 25c extending from the first side 11 to the second side 12 on both sides of the base portion 25 and projecting in the height direction Z and having top edges 25b. Have. The side wall 25 c includes a pin hole 27 through which a pin (shaft) 26 is inserted in the vicinity of the end on the first side 11, a receiving recess 29 that allows the end of the pin 28 to move, and a second side 12 of the receiving recess 29. A guide groove 32 extending in the vertical direction Y and guiding the sliding of the pins (sliding pins) 30 and 31 is formed. A screw hole for passing the screws 33a and 33b is formed in the base portion 25, and the fixing member 16 is fixed to the main body 13a of the housing 13 via the screws 33a and 33b. The screw 33a is fixed to the screw hole with a bent plate-like plate spring 35 interposed therebetween. The leaf spring 35 has a fixing portion 35a having a screw hole, and an extending portion 35b that bends and extends in the height direction Z from the edge of the first side 11 of the fixing portion 35a. The screw hole of the fixing portion 35a The plate spring 35 is fixed to the fixing member 16 by tightening it with the screw 35a in a state where the screw hole and the screw hole of the base portion 25 are in communication with each other.

  The guide groove 32 has a straight portion 32a extending from the vicinity of the end portion of the side wall 25c on the second side 12 to the first side 11, and a slant toward the top edge 25b and the first side 11 connected to the straight portion 32a. And an inclined portion 32b extending in the direction. Pins (shafts) 30 and 31 that slide along the guide groove 32 are inserted therethrough. The keeper 15 includes a fixing portion 15a in which a screw hole 38 is formed, and a receiving portion 15b extending from the fixing portion 15a in the height direction Z so as to be a curved surface with which the latch portion 20 is engaged.

  The operation lever 18 includes a top portion 40 that extends in the longitudinal direction Y, and a side wall 41 that protrudes from both sides of the top portion 40 to the base portion 25 of the fixing member 16. A pin hole 42 for inserting the pin 26 and a pin hole 43 for inserting the pin 28 are formed in a portion of each side wall 41 protruding from the base portion 25 on the first side 11. The operation lever 18 has both side walls 41 located on the inner side of the both side walls 25c of the fixing member 16, and in that state, via the pins 26 inserted into the pin holes 42, the operation lever 18 is approximately 45 in the height direction Z in the lying state. It is pivotally connected to the fixed member 16 by ~ 47 °.

  The movable member 21 has both side walls 45 extending in the vertical direction Y and bridges 46 extending in the horizontal direction X by connecting them on the first side 11 of each side wall 45. A through hole (long hole) 47 through which the latch portion 20 is inserted is formed in the end portion 45a of the first side 11 of the side walls 45, and a step that is bent inward on the second side 12 of the bridge 46. Is formed, and a recess 48 for arranging the coil portion of the spring member 22 is formed. In the recess 48, pin holes 49 and 50 through which the sliding pins 30 and 31 are inserted are located. The end 45b on the second side 12 of the side walls 45 is bent so as to protrude outward in the lateral direction X, and the end (bent portion) 45b is the end on the second side 12 of the spring member 22. A through-hole 51 is formed for insertion through the fixed portion located at the center.

  The spring member 22 is a so-called tension coil spring, and includes a coil portion 52 around which a metal wire is wound, and a hook-like hook 22a extending straight from the coil portion 52 to the first side 11. And a fixing portion 54 that is formed by bending a wire rod into a rectangular shape on the second side 12 of the coil portion 52 and has a hook-like hook 22b. In the spring member 22, the hook 22 b of the fixed portion 54 is inserted into the through hole 51 located at the bent portion of the second side 12 of the both side portions 45 of the movable member 21, and the hook 22 a of the arm portion 53 is inserted into the through hole of the movable member 21. By being latched on both sides of the latch portion 20 inserted through 47, it is detachably attached to the movable member 16. The spring member 22 is attached to the movable member 21 in a tensioned state, and in the locked state, the hook 22a is always urged toward the second side 12 by locking the hook 22a to the latching portion 20, so that the latching portion 20 is They are pressed against the receiving portion 15b of the keeper 15 so that they are more strongly engaged than when the spring member 22 is not disposed. The spring member 22 may be disposed only on either one of both sides of the movable member 16 as long as the latch portion 20 and the keeper 15 have a required engagement strength. Moreover, since the coil part 52 is located in the recessed part 48 of the movable member 16, the arrangement | positioning part of the coil part 52 of the catch lock 10 does not become too wide compared with another part.

  The link member 19 has a pin receiving portion 60 and a bridge 61 between both pin receiving portions 60 on both sides. Both pin receiving portions 61 have a first end portion 62a and a second end portion 63 that is separated from the first end portion 62a in the longitudinal direction Y. A pin hole 63 through which the pin 26 is inserted is formed at the first end 62a, and a pin hole 64 through which the pin 30 inserted through the guide groove hole 32 is formed at the second end 62b. The link member 19 is interposed between the fixing member 16 and the operation lever 18, and the first end 62 a is located inside the end of the side wall 41 of the operation lever 18 on the first side 11, and the pin holes 42, It is connected to the operating lever 18 through a pin 26 inserted therethrough in the matching state 63. Further, the second end portion 62 b of the link member 19 is pivotally connected to the operation lever 18 and is pivotally connected to the pin 30 inserted into the guide groove hole 32. Although not shown, the latch part 20 and each pin are locked or inserted through the respective members to prevent the rivet from being clamped or fastened via a ring in order to prevent them from coming off. May be.

  4 and 5, according to the catch lock 10 according to the embodiment of the present invention having the above-described configuration, the operator hangs his / her finger on the end of the second side 12 of the operation lever 18 in the locked state. When the operating lever 18 is turned clockwise R about the pin as a fulcrum, the link member 19 is turned slightly counterclockwise via the pins 26 and 30, and at the same time, the pins 30 and 31 are guided into the guide slot 32. The pin 30 slides to the inclined portion 32a of the guide groove hole 32 and stops along the straight portion 32b. The movable member 21 is lifted in a diagonal direction with the pins 30 and 31 as fulcrums, and the latch portion 20 is completely detached from the receiving portion 15b of the keeper 15 and the locking is released. The pin 30 is urged toward the top edge 25b by the extending portion 35b of the leaf spring 35 and enters the inclined portion 32a of the guide groove 32, and the straight portion 32b located on the second side 12 is stopped. Therefore, even if the operator releases his hand, the operation lever 18 does not fall counterclockwise and the unlocked state is maintained.

  According to the catch lock 10 of the present embodiment, since the spring member 22 is in an extended state and is disposed by locking the hooks 22a and 22b to the movable member 21, like the conventional catch lock. Unlike the case where a compression coil spring is disposed, the configuration is simple because an axis or the like penetrating the spring member is unnecessary, and the one end 45a is directly locked to the latch portion 20, so that the number of parts can be reduced. Can do.

Second Embodiment
6-9, in this embodiment, the catch lock 10 whole is covered with the cover member 70 made of plastic or metal. The cover member 70 is U-shaped and has a curved transverse covering portion 71 on the first side 11 and both side covering portions 72 that are spaced apart from each other in the lateral direction X. The operation lever 18 of the latch assembly 14 is pivotably disposed between the both side covering portions 72. The cover member 70 is formed so that the thickness dimension is gradually reduced toward the tip in the transverse covering portion 71.

  As shown in FIGS. 8 and 9, an arrangement space for accommodating each component of the latch assembly 14 is formed inside the cover member 70. The both side covering portions 72 have a wide portion 76 where the coil portion 52 of the spring member 22 is disposed and a narrow portion 77 where the arm portion 53 of the spring member 22 extending from the wide portion 76 to the first side 11 is disposed. And have. Inside the transverse covering portion 71 is provided a transverse portion 78 where the latch portion 20 of the movable member 21 extending in the width direction X is disposed. In the latch assembly 14, end portions (bent portions) 45 b on the second side 12 and end portions 45 a on the first side 11 of both side walls 45 of the movable member 21 are in contact with the inner surface of the cover member 70. 70 is fitted inside. In this state, when the operator holds the operation lever 18 and pivots it in the unlocking direction, the latch portion 20 is separated from the receiving portion of the keeper 15 and unlocked.

  Thus, when the catch lock 10 is entirely covered with the cover member 70 during locking, it is possible to prevent dust from entering the latch assembly 14 and generating rust. Referring to FIG. 9, even when the catch lock 10 is placed flat, the leaf spring 35 biases the pin 30 that has entered the inclined portion 32 a of the guide groove 32 upward, so that the operator When the finger is released, the operation lever 18 does not lie down toward the keeper 15, and the lid 13a can be easily opened. Furthermore, it is excellent in appearance as compared with the case where the entire catch lock 10 is exposed, and a more excellent appearance can be obtained by attaching decorative elements such as patterns and figures to the outer surface of the cover member 70.

10 Catch Lock 11 First Side 12 Second Side 14 Latch Assembly 16 Fixing Member 18 Operation Lever 19 Link Member 20 Latch Part 21 Movable Member 22 Spring Member 22a Hook Part 22b Hook Part 25 Base Part 25b Top Base Edge 25c Base Side wall 26 shaft (pin)
30 axis (sliding pin)
32 guide groove hole 32a guide groove hole straight portion 32b guide groove hole inclined portion 35 leaf spring 70 cover member 71 transverse covering portion 72 both sides covering portion X lateral direction Y longitudinal direction Z height direction

Claims (5)

In a catch lock including a latch assembly having a vertical direction and a horizontal direction, a height direction perpendicular thereto, a first side and a second side, and a keeper,
The latch assembly is positioned near the end of the fixing member on the second side, and an operation lever that is pivotally connected to the vicinity of the end of the fixing member on the first side. A movable portion having a latch portion extending in the lateral direction at an end portion on the first side, which is supported so as to be slidable and turnable in the longitudinal direction via a shaft slidably inserted in a guide groove which is long in a direction. Including members,
At least one of both sides of the movable member facing each other in the lateral direction is provided with a spring member having one end locked to the latch portion and the other end fixed to the movable member and extending in the longitudinal direction. The catch lock, which is arranged in a tension state.   The spring member has a coil part that can be expanded and contracted, and an arm part that extends straight from the coil part in the longitudinal direction, and a hook-like hook part located at the tip of the arm part is associated with the latch part. The catch lock according to claim 1, wherein a hook-shaped hook portion that is stopped and extends from the coil portion to the second side is fixed to the movable member.   The fixing member includes a base portion and side walls extending from the first side to the second side on both sides of the base portion and projecting in the height direction and having a top edge. The guide groove formed from a straight part extending from the vicinity of the end on the second side to the first side, and an inclined part extending to the top edge side and extending obliquely to the first side. A first end portion and a second end portion, the first end portion being pivotally connected to the operation lever member via a pin, and the second end portion being the guide groove. The catch lock of Claim 1 or 2 containing the link member connected with the said fixing member through the said axis | shaft penetrated to a hole so that rotation is possible.   The leaf spring fixed to the base portion of the fixing member is further included, and the leaf spring biases the shaft that has entered the inclined portion of the guide groove hole upward. Catch tablets.   In the locked state, it has a transverse covering portion that covers the keeper and the latch portion locked thereto, and both side covering portions that extend from the first side to the second side, and the operation lever is pivotably movable. The catch lock in any one of Claims 1-4 located between both-sides coating | coated parts.

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