Latch lock

Abstract

To provide a latch lock capable of suppressing wear or damage and the like by dust.SOLUTION: A latch lock 1 is provided with: a body case 10; a latch 30 configured to be movable in a retractable direction relative to the body case 10; a latch operation member 40 arrange on a front side and moving the latch 30 in the retractable direction through rotational operation toward the front; a thumb turn 50 arranged on a rear side and rotationally operated in one direction or the other relative to the body case 10; and a lock member 60 capable of being placed in a lock state or in an unlock state relative to the body case 10 through rotational operation of the thumb turn 50 in one direction or the other.SELECTED DRAWING: Figure 10

Description

[Technical field]

[0001] The present invention relates to the technology of latch locks. [Background technology]

[0002] Conventionally, a latch lock for a delivery box has been known which includes a latch operation knob, a latch whose tip protrudes or retracts from the latch insertion portion, a lock unit with a keyhole, and a lock / unlock operation knob; when a recipient is waiting to receive the package, the latch operation knob on the front side is turned to the unlocked state and the door is closed; when a delivery person or the like wants to place a package inside the delivery box, they operate the latch operation knob to open the door and place the package inside, and before closing the door, they rotate the lock / unlock operation knob on the back side of the door to place the latch operation knob in the locked state and close the door, thereby auto-locking the door (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-124002 A Summary of the Invention [Problem to be solved by the invention]

[0004] The latch lock for the delivery box further comprises a slide actuating member that is slid by the rotation of the latch operation knob, and a locking member that sets the slide of the slide actuating member between a locked position and an unlocked position, and the latch is retracted by the sliding of the slide actuating member. Since the slide actuating member slides parallel to the direction in which the latch protrudes or retracts, friction between the dust that has entered the inside and the slide actuating member increases, which may cause the slide actuating member to wear out or become damaged.

[0005] The present invention has been made in consideration of the above-mentioned circumstances, and its objective is to provide a latch lock that can be prevented from wearing or being damaged by dust, etc., and that allows the latch to be inserted with a light force. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides a latch lock, The main body case, a latch configured to be movable in a protruding and retracting direction relative to the main body case; a latch operating member that is disposed on a front side of the main body case and that moves the latch in a retracting direction by being rotated toward the front with respect to the main body case; a thumb turn disposed on the rear side of the main body case and rotated in one direction or the other relative to the main body case; The latch operating member is provided with a locking member that swings relative to the main body case when the thumb turn is rotated in one direction or the other to set the latch in a locked state in which the latch cannot be moved in the retracted direction by operating the latch operating member, or in an unlocked state in which the latch can be moved in the retracted direction by operating the latch operating member.

[0007] The latch operation member is A handle portion and a cam portion are provided. The device is configured to be rotatable relative to the main body case around a rotation axis provided in the main body case, When the handle portion is pulled towards the user, it rotates, and the cam portion presses the latch, causing the latch to move in the retracting direction.

[0008] The axial direction of the rotation shaft of the latch operating member is perpendicular to the protruding and retracting direction in which the latch moves. Effect of the Invention

[0009] The present invention has the following advantages. That is, according to the present invention, it is possible to suppress wear or damage caused by dust. [Brief description of the drawings]

[0010] [Figure 1] FIG. 2 is a perspective view showing a latch lock in an unlocked state according to an embodiment of the present invention. [Diagram 2] FIG. 4 is a perspective view showing the latch lock in an unlocked state. [Diagram 3] FIG. 4 is a front view showing the latch lock in an unlocked state. [Figure 4] FIG. 4 is a rear view showing the latch lock in the unlocked state. [Diagram 5] FIG. 4 is a cross-sectional view showing the latch lock in an unlocked state. [Figure 6] 13 is a bottom view showing the latch lock with the latch operating member operated. [Figure 7] FIG. 11 is a cross-sectional view showing the latch lock in a state where the latch operation member is operated. [Figure 8] FIG. 4 is a rear view showing the latch lock in the locked state. [Figure 9] FIG. 4 is a bottom view showing the latch lock in the locked state. [Figure 10] These figures also show the state in which the locking member of the latch lock swings, where (a) is a rear view showing the locked state, (b) is a rear view showing the state in which the thumb turn is rotated from the locked state, and (c) is a rear view showing the unlocked state. [Figure 11] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] The latch lock 1 will be described below with reference to Figures 1 to 11. For the sake of convenience in the following description, the up-down direction on the paper surface of Figure 1 will be defined as the up-down direction, the direction toward the left front of the paper surface as the forward direction, and the direction perpendicular to the forward direction and the up-down direction as the left-right direction, but the directions of the latch lock 1 are not limited to these.

[0012] The latch lock 1 is configured, for example, as a latch lock for a delivery box. The delivery box includes a box body and a door. The door of the delivery box is a left-right opening door, and is attached to the box body via a hinge, and configured to be openable and closable relative to the box body. The latch lock 1 is attached to the door of the delivery box, and configured to engage and disengage a latch with a latch receiving portion provided on the box body. Note that the latch lock 1 is not limited to being a latch lock for delivery boxes, and may be configured for other purposes, such as a lock for an autolock door in a hotel, or a lock for an inspection hatch door. As shown in Figures 1 to 5, the latch lock 1 comprises a main case 10, a cover 20, a lid 21, a latch case 25, a latch 30, a coil spring 35, a latch operating member 40, a cylinder lock 45, a thumb turn 50, and a locking member 60. In the following explanation, the latch lock 1 is assumed to be installed on the door edge of a right-opening door (hinged rotatably to the box body on the right side of the door with the hinge axis facing up and down).

[0013] The main body case 10 includes a main plate portion 11, a concave portion 12, a pair of upper and lower side portions 13, a left portion 14, a pair of upper and lower side plates 15, a rotating shaft 16, and a support shaft 17. The main plate 11 is configured as a generally rectangular flat plate with its longitudinal direction extending in the left-right direction in front view. The main plate 11 has a generally rectangular opening with its longitudinal direction extending in the left-right direction in front view formed at a position offset to the left of the left-right center, and a circular opening formed in the right part in front view. The concave surface portion 12 is disposed behind the main plate portion 11. The concave surface portion 12 has a flat portion and an arc-shaped portion connected to the right edge of the flat portion. The right edge of the arc-shaped portion of the concave surface portion 12 is connected to the right edge of the substantially rectangular opening of the main plate portion 11, and is configured to cover a part of the substantially rectangular opening of the main plate portion 11 in a front view. The pair of side portions 13·13 are disposed rearward of the main plate portion 11. One side portion 13 of the pair of side portions 13·13 is connected to an upper edge portion of the concave portion 12 and is also connected to an upper edge portion of the substantially rectangular opening of the main plate portion 11, and the other side portion 13 of the pair of side portions 13·13 is connected to a lower edge portion of the concave portion 12 and is also connected to a lower edge portion of the substantially rectangular opening of the main plate portion 11. The left portion 14 is disposed rearward of the main plate portion 11. The left portion 14 is connected to the vicinity of the left edge portion of the rear surface of the main plate portion 11 and is configured to protrude rearward from the main plate portion 11. Between the right surface of the left portion 14 and the left end portion of the concave portion 12, a space is formed in which a cam portion 42 of a latch operation member 40, which will be described later, can be disposed. The space surrounded by the concave surface portion 12, the pair of side portions 13, 13, and the left portion 14 is configured as a concave space 10a that is concave from a substantially rectangular opening of the main plate portion 11. A handle portion 41 of a latch operation member 40, which will be described later, is disposed in the concave space 10a.

[0014] A pair of upper and lower side plates 15 / 15 of main case 10 are disposed behind main plate 11. One of the pair of side plates 15 / 15 is connected adjacent to an upper edge of main plate 11 above the circular opening of main plate 11, and is connected to one of the pair of side portions 13 / 13. The other of the pair of side plates 15 / 15 is connected adjacent to a lower edge of main plate 11 below the circular opening of main plate 11, and is connected to the other of the pair of side portions 13 / 13. The rotating shaft 16 is a generally cylindrical member whose axial direction is in the vertical direction, and rotatably supports the latch operation member 40. The rotating shaft 16 is disposed so that its both ends are connected to the left front portions of the pair of side portions 13, 13, respectively, and so as to span between the pair of side portions 13, 13. The rotating shaft 16 is disposed at a position overlapping between the right surface of the left portion 14 and the left end portion of the concave portion 12 in a front view. The support shaft 17 is configured to protrude rearward from the rear surface of the concave portion 12, and supports a locking member 60 (described later) in a swingable manner. The support shaft 17 is disposed approximately at the boundary between the portion of the concave portion 12 configured in a flat plate shape and the portion formed in an arc shape.

[0015] The cover 20 is disposed behind the main plate 11. The cover 20 is a plate-like member having a generally rectangular portion in rear view and a generally rectangular portion in side view extending forward from the right end of the portion, and is generally L-shaped in plan view. The end of the portion of the right part of the cover 20 that protrudes forward is disposed near the right edge of the main plate 11. The cylinder lock 45 and part of the thumb turn 50 are disposed in the space surrounded by the inner surface of the cover 20 and the rear surface of the main plate 11. A circular opening is formed in the generally rectangular portion of the cover 20 in rear view.

[0016] The lid 21 is disposed behind the main plate 11 and to the left of the cover 20. The lid 21 is a plate-shaped member having a generally rectangular portion in rear view, a generally rectangular portion in side view extending rearward from the right end of the generally rectangular portion in rear view, and portions extending forward from the upper and lower ends of the generally rectangular portion in rear view. The left end of the generally rectangular portion of the lid 21 in rear view abuts against the rear end of the left portion 14 of the main plate 11 of the main case 10, and the left end of the cover 20 is adjacent to the right surface of the generally rectangular portion of the right portion of the lid 21 in side view. The portions extending forward from the upper and lower ends of the generally rectangular portion in rear view of the lid 21 are disposed outside the pair of side portions 13, 13 of the main case 10. The lid 21 is disposed so that a predetermined space is formed between the generally rectangular portion in rear view and the concave portion 12 of the main plate 11 of the main case 10. The portion of the lid 21 that is generally rectangular in side view is configured as a spring receiver 22 against which one end of the coil spring 35 abuts. A cutout portion 23 is formed in the portion of the lid 21 that is generally rectangular in rear view. A cam portion 42 of a latch operation member 40, which will be described later, is inserted into the cutout portion 23.

[0017] The latch case 25 is disposed behind the portion of the lid 21 that is configured as a substantially rectangular shape in rear view and to the left of the portion configured as the spring receiver 22 on the right side of the lid 21. The latch case 25 has a rear plate, a pair of side plates that extend forward from the upper and lower edges of the rear plate, respectively, and a pair of front plates that extend upward or downward from the front edges of the pair of side plates, and is configured as a substantially convex shape in side view. A part of the latch 30 is disposed in a predetermined space surrounded by the inner surface of the latch case 25 and the outer surface of the lid 21. The latch case 25 has a cutout portion 26 with the left-right direction as the longitudinal direction in the rear plate. A protrusion portion 34 of the latch 30, which will be described later, is inserted into the cutout portion 26 so as to protrude rearward.

[0018] As shown in Figs. 3 to 7, the latch 30 is provided in the main body case 10 and configured to be movable in a protruding and retracting direction relative to the main body case 10. The latch 30 is configured in a substantially rectangular prism shape. The latch 30 is configured to be movable in the left-right direction with a part of the latch 30 disposed in a predetermined space surrounded by the inner surface of the latch case 25 and the outer surface of the lid 21. The latch 30 is configured to be movable between a state in which the left end of the latch 30 protrudes to the left so as to be engaged with a latch receiver (not shown) and a state in which the left end of the latch 30 retracts to the right so as to escape from the latch receiver (not shown). The direction in which the latch 30 protrudes and retracts relative to the main body case 10 is the left-right direction. The latch 30 includes a recess 31, a contact portion 32, a spring receiver 33, and a protruding portion 34.

[0019] The recess 31 of the latch 30 is formed by forming a part of the left front surface of the latch 30 into a concave shape. A cam portion 42 of a latch operation member 40 (described later) is disposed in the recess 31, and the cam portion 42 abuts against the right side wall of the recess 31. The right side wall of the recess 31 is configured as the abutment portion 32. The right part of the latch 30 is configured as a cylinder having an opening on the right side and a bottom on the left side. A part of a coil spring 35 is disposed inside the right part of the latch 30, and the right surface of the bottom of the right part of the latch 30 is configured as a spring receiver 33 against which the other end of the coil spring 35 abuts. In this way, the latch 30 is biased to the left (in the protruding direction) by the coil spring 35. The protrusion 34 protrudes backward from the middle of the left and right sides of the rear surface of the latch 30. The latch 30 is configured to be movable in the left and right directions by being operated left and right while the protrusion 34 is pinched by a user (such as a recipient of a package or a delivery person). The latch 30 is in a state in which it protrudes most to the left relative to the main body case 10 when the latch 30 is biased by the coil spring 35 and the protrusion 34 of the latch 30 abuts on the left edge of the notch 26 of the latch case 25. In this state, the latch 30 protrudes most to the left relative to the main body case 10. When the protrusion 34 of the latch 30 or a handle portion 41 of a latch operation member 40 described later is operated by the user and the right end of the latch 30 abuts on the spring receiver 22 of the lid 21, the latch 30 is in a state in which it is most recessed to the right relative to the main body case 10. In this state, the latch 30 is in a state in which it is most recessed to the main body case 10. In addition, the protrusion 34 is designed to enable a user to slide the latch in and push the door open from inside the box by sliding the protrusion 34 installed inside the box to the right when the user is inside the box to put a package in or take it out and the door is then closed due to a sudden gust of wind or other cause, trapping the user inside the box.

[0020] The latch operation member 40 is provided on the main body case 10. The latch operation member 40 moves the latch 30 to the right (in the retracted direction) when operated by a user. The latch operation member 40 has a handle portion 41 extending to the right and a cam portion 42 extending rearward, and is configured to be substantially L-shaped in a plan view. A through hole penetrating in the vertical direction is formed at the boundary between the handle portion 41 and the cam portion 42, and the rotation shaft 16 of the main body case 10 is inserted into the through hole. In this way, the latch operation member 40 is configured to be rotatable relative to the main body case 10 around the rotation shaft 16. A predetermined space is formed between the rear surface of the handle portion 41 and the front surface of the concave portion 12 of the main body case 10 in the concave space 10a of the main body case 10, and the user's fingers can be placed in the predetermined space when operating the handle portion 41. When the handle portion 41 is pulled towards the user (forward), the latch operation member 40 rotates relative to the main body case 10, and the cam portion 42 presses the abutment portion 32 of the latch 30. In this manner, the cam portion 42 of the latch operation member 40 presses the abutment portion 32 of the latch 30, causing the latch 30 to move to the right (in the retracting direction). When the user releases the operation of the handle portion 41 of the latch operating member 40 from this state, the latch 30 moves to the left due to the bias of the coil spring 35, and the latch operating member 40 rotates to return to its original state.

[0021] As shown in Figures 1, 3, 5, 7, and 9, the cylinder lock 45 has a keyhole 46. The keyhole 46 is arranged so as to be exposed in a circular opening in the main plate portion 11, and is arranged on the front side of the latch lock 1. The cylinder lock 45 is set in a locked or unlocked state by a user inserting a key into the keyhole 46 and rotating the key in one direction or the other in a plan view.

[0022] The thumb turn 50 is configured as a bottomed cylinder that is open at the front and has a bottom at the rear. The thumb turn 50 is configured to be rotatable clockwise (one side) or counterclockwise (the other side) relative to the main body case 10 when viewed from the rear. The thumb turn 50 is configured to be rotatable within a range of approximately 90° when viewed from the rear relative to the main body case 10. Note that the rotation range of the thumb turn 50 is not limited to this and can be set appropriately depending on the specifications. The thumb turn 50 has a knob portion 51, a first pushing portion 52, a second pushing portion 53, a spring holder 54, and an elastic member 55.

[0023] The knob 51 is inserted into the circular opening of the cover 20 so as to protrude rearward from the bottom of the thumb turn 50, and is disposed on the rear side of the latch lock 1. The thumb turn 50 is locked or unlocked when the user pinches the knob 51 of the thumb turn 50 and rotates the thumb turn 50 clockwise (one side) or counterclockwise (the other side) relative to the main body case 10. The axis of the thumb turn 50 and the axis of the cylinder lock 45 are disposed so as to coincide with each other. The cylinder lock 45 and the thumb turn 50 are connected, and when the user rotates the key inserted into the keyhole 46 of the cylinder lock 45 clockwise or counterclockwise, the thumb turn 50 can be rotated relative to the main body case 10 to lock or unlock. Here, the locked state in this embodiment refers to a state in which the latch operation member 40 cannot rotate relative to the main body case 10. In other words, the locked state refers to a state in which the user cannot move the latch 30 in the retracted direction by operating the latch operation member 40. The unlocked state in this embodiment refers to a state in which the latch operation member 40 can rotate relative to the main body case 10. In other words, the unlocked state refers to a state in which the user can move the latch 30 in the retracted direction by operating the latch operation member 40. The rear surface of the cover 20 may be provided with the letters "OPEN" and "LOCK" respectively, as well as a "circular double-headed arrow design" between "OPEN" and "LOCK" (see FIG. 11). When configured in this manner, the knob 51 of the thumb turn 50 indicates "OPEN" in the unlocked state, and indicates "LOCK" in the locked state.

[0024] The elastic member 55 biases the thumb turn 50 to keep the thumb turn 50 rotated to the locked state or the thumb turn 50 rotated to the unlocked state. The elastic member 55 is a coil spring, and is configured to have a portion formed in a coil shape and legs extending outward from one end and the other end of the coil shape. The leg on one end of the elastic member 55 is engaged with the main case 10, and the leg on the other end of the elastic member 55 is engaged with the spring retainer 54 of the thumb turn 50.

[0025] First pushing portion 52 and second pushing portion 53 of thumb turn 50 protrude outward from the circumferential surface of thumb turn 50 and are disposed in a space surrounded by the inner surface of cover 20 and the rear surface of main plate portion 11 of main case 10. When thumb turn 50 is in an unlocked state, first pushing portion 52 is positioned to protrude leftward (toward latch 30) from the circumferential surface of thumb turn 50 and abuts against abutment portion 61 of locking member 60, which will be described later. When thumb turn 50 is in a locked state, second pushing portion 53 is positioned to protrude leftward (toward latch 30) from the circumferential surface of thumb turn 50 and abuts against abutment portion 61 of locking member 60, which will be described later.

[0026] The locking member 60 swings relative to the main body case 10 to enter a locked or unlocked state when the user rotates the thumb turn 50 in one direction or the other. The locking member 60 is disposed between the latch operation member 40 and the thumb turn 50. A through hole penetrating in the front-to-rear direction is formed in the center of the locking member 60, and the support shaft 17 of the main body case 10 is inserted into the through hole. In this way, the locking member 60 is configured to be swingable relative to the main body case 10 around the support shaft 17.

[0027] The locking member 60 has an abutment portion 61 and a locking portion 62. The abutment portion 61 protrudes from the peripheral surface of the locking member 60 generally to the right, and the locking portion 62 protrudes from the peripheral surface of the locking member 60 generally to the left. When the user turns the thumb turn 50 clockwise in rear view to change from the locked state to the unlocked state, the first pushing portion 52 of the thumb turn 50 pushes in the abutment portion 61, causing the locking member 60 to swing counterclockwise in rear view. In the unlocked state, the abutment portion 61 protrudes to the lower right from the peripheral surface of the locking member 60. In the unlocked state, the locking portion 62 protrudes to the upper left from the peripheral surface of the locking member 60, and the tip portion (left end portion) of the locking portion 62 does not abut against the right surface of the cam portion 42 of the latch operating member 40. In other words, the latch operating member 40 is in a state in which it can rotate with respect to the main body case 10. In this way, in the unlocked state, the latch 30 can be retracted by the user operating the latch operating member 40. When the user turns the thumb turn 50 counterclockwise in rear view to change from the unlocked state to the locked state, the second pushing portion 53 of the thumb turn 50 pushes in the abutment portion 61, causing the locking member 60 to swing clockwise in rear view. In the locked state, the abutment portion 61 protrudes to the upper right from the circumferential surface of the locking member 60. In the locked state, the locking portion 62 protrudes to the left from the circumferential surface of the locking member 60, and the tip portion (left end portion) of the locking portion 62 abuts against the right surface of the cam portion 42 of the latch operating member 40. In other words, the latch operating member 40 is in a state in which it cannot rotate with respect to the main body case 10. In this way, in the locked state, the latch 30 cannot be retracted by the user operating the latch operating member 40. Even in the locked state, the latch 30 is configured to be movable in the left-right direction (protruding and retracting direction).

[0028] As described above, the locking member 60 swings relative to the main case 10 to enter a locked or unlocked state when the user rotates the thumb turn 50 in one direction or the other. Compared to prior art documents which have a member other than the latch that slides parallel to the direction in which the latch protrudes or retracts, this prevents wear or damage to the internal members of the main case 10 caused by dust that has gotten inside the main case 10, and allows the latch to be retracted with a light force.

[0029] As described above, the latch operating member 40 rotates when the handle portion 41 is pulled toward the user, and the cam portion 42 presses against the latch 30, moving the latch 30 in the retracting direction. This makes it easier to open the door compared to the prior art document in which the latch operating knob is pinched and rotated to move the latch in the retracting direction, and then the latch operating knob is pulled toward the user to open the door.

[0030] Furthermore, when the latch operation member 40 is not being operated by the user, the front surface of the main plate portion 11 of the main case 10 and the front surface of the latch operation member 40 are configured to be approximately flush with each other. Because of this configuration, the design of the front side of the latch lock 1 can be improved compared to when the front surface of the main plate portion 11 of the main case 10 and the front surface of the latch operation member 40 have large irregularities when the latch operation member 40 is not being operated by the user.

[0031] The embodiments disclosed herein should be considered to be illustrative and not restrictive in all respects. The scope of the present invention is defined by the claims, and it is intended to include all modifications within the scope and meaning equivalent to the claims.

[0032] For example, in the embodiment disclosed herein, the handle portion 41 and the cam portion 42 of the latch operation member 40 are integrally configured, but the present invention is not limited thereto. For example, the handle portion 41 and the cam portion 42 may be divided into two parts that can rotate coaxially around the rotation shaft 16 provided in the main body case 10. Here, in the unlocked state, the cam portion 42 does not rotate until the handle portion 41 is rotated toward the user by a predetermined angle (for example, 15°), but when the predetermined angle is reached, the handle portion 41 abuts against the cam portion 42 in the rotation direction, and by further pulling the handle portion 41 toward the user, the cam portion 42 rotates together with the handle portion 41 to move the latch 30 in the retracting direction. In the locked state, the lock member 60 abuts against the cam portion 42 to restrict the rotation of the cam portion 42, and the latch 30 cannot be moved in the retracting direction, but the handle portion 41 can be rotated toward the user by the predetermined angle. That is, the locked state in this case means "a state in which the cam portion 42 of the latch operation member 40 cannot rotate relative to the main case 10," and refers to a state in which the user cannot move the latch 30 in the retracting direction by operating the latch operation member 40. Also, the unlocked state in this case means "a state in which the cam portion 42 of the latch operation member 40 can rotate relative to the main case 10," and refers to a state in which the user can move the latch 30 in the retracting direction by operating the latch operation member 40.

[0033] In addition, in the embodiment disclosed herein, the axial direction of the rotation shaft 16 of the latch operating member 40 is illustrated as being perpendicular to the protruding and retracting direction in which the latch 30 moves, but the present invention is not limited to this, and the axial direction of the rotation shaft 16 of the latch operating member 40 may be parallel to the protruding and retracting direction in which the latch 30 moves, and at least one of the cam portion 42 or the abutment portion 32 may be an inclined surface.

[0034] In addition, in the embodiment disclosed herein, an example has been disclosed in which the axial direction of the rotation shaft 16 of the latch operating member 40 is configured to face in the vertical direction parallel to the axial direction of the hinge shaft of the door on which the latch lock 1 is provided, but the present invention is not limited to this, and for example, the hinge shaft of the door may be horizontal, and the axial direction of the rotation shaft 16 of the latch operating member 40 may face in the vertical direction perpendicular to this.

[0035] In addition, in the embodiment disclosed herein, the support shaft of the locking member 60 and the axis of the thumb turn 50 are configured to face in the same direction, but the present invention is not limited to this, and the support shaft of the locking member 60 and the axis of the thumb turn 50 may be arranged so as to be perpendicular to each other, and inclined surfaces may be provided on the first pushing portion 52 and the second pushing portion 53 and the abutment portion 61, respectively, for engagement therewith. But that's okay.

[0036] In addition, in the embodiment disclosed herein, the cylinder lock 45 is disclosed as being capable of being locked or unlocked by inserting a key into the keyhole and rotating the key in one direction or the other in a plan view, but the present invention is not limited to this and may be capable of being only unlocked. [Explanation of symbols]

[0037] 1 Latch lock 10 Main unit case 16 Rotation Axis 17 Support shaft 30 Latch 31 Recess 32 Contact part 33 Spring support 34 Protrusion 35 Coil spring 40 Latch operating member 41 Handle 42 Cam section 45 Cylinder Lock 50 Thumb turn 51 Knob 52 First pushing part 53 Second pushing part 60 Locking member 61 Contact part 62 Rock Section

Claims

1. The main body case, a latch configured to be movable in a protruding and retracting direction relative to the main body case; a latch operation member that is disposed on a front side of the main body case and that moves the latch in a retracting direction by being rotated toward the front with respect to the main body case; a thumb turn disposed on the rear side of the main body case and rotated in one direction or the other relative to the main body case; A latch lock comprising: a locking member that swings relative to the main body case when the thumb turn is rotated in one direction or the other to set the latch in a locked state in which the latch cannot be moved in the retracted direction by operating the latch operating member, or in an unlocked state in which the latch can be moved in the retracted direction by operating the latch operating member.

2. The latch operation member is The handle portion and the cam portion are provided. The device is configured to be rotatable relative to the main body case around a rotation axis provided in the main body case, When the handle portion is pulled toward the user, the handle portion rotates, and the cam portion presses the latch, causing the latch to move in a retracting direction.

2. The latch lock according to claim 1.

3. The axial direction of the rotation shaft of the latch operation member is perpendicular to the protruding and retracting direction in which the latch moves.

3. A latch lock as claimed in claim 2.

Images