JP2021195740A - Empty lock, opening/closing device, and luggage rack - Google Patents

Abstract

To provide an empty lock with excellent operability even in the case of applications where it is difficult to open an opening/closing body while operating an operation part to retract a latch.SOLUTION: Included are: a return trigger 25 that is in a standby position facing a strike (receiving port) in a predetermined direction (equivalent to the opening direction of an opening/closing body) when a latch 22, which is urged by a spring 23, retreats from an advance position to a retreat position, and retreats from the standby position upon contact with the strike in the predetermined direction; and a stopper 27 that moves to a locked position to hold the latch 22 in the retracted position in conjunction with the retraction of the latch 22 from the advanced position to the retracted position, and moves to a free position to allow the latch 22 to advance in conjunction with the retraction of the return trigger 25 from the standby position.SELECTED DRAWING: Figure 1

Description

The present invention relates to an empty lock, an opening / closing device for locking an opening / closing body by the empty lock and an auxiliary lock, and a luggage rack provided with the opening / closing device.

Conventionally, in the opening / closing bodies such as doors and shutters that open / close the doorways of houses and luggage racks, empty locks without a locking function have been used in order to prevent the opening / closing body from opening without permission when unlocked. .. An operation unit such as a doorknob, a lever handle, a handle, and a knob is arranged outside the opening / closing body, and a latch case for accommodating a latch or the like is arranged inside the opening / closing body. A strike corresponding to the latch is arranged on the frame side of the doorway. When an operation part such as a doorknob is grasped or picked and turned, pulled or pushed by the hand, the latch is retracted from the strike by the operating force. The opening / closing body can be opened by further performing an opening operation such as pulling or pushing the operation unit. When the hand is released from the operation unit, the force of the spring in the latch case causes the latch to return to the advanced position where it can engage with the strike in the opening direction of the opening / closing body, and the operation unit also returns accordingly (for example,). Patent Document 1).

When locking the opening / closing body, an auxiliary lock linked to an empty lock is also used. Considering convenience and crime prevention, some auxiliary locks automatically switch to the lock standby state when the latch is retracted at the operation unit after unlocking the auxiliary lock. ..

The lock of Patent Document 2 is provided with a dial lock as an auxiliary lock, and after adjusting the dial lock to the unlocking number, the dial lock is reset when the knob, which is the operation unit, is turned to retract the latch. If the open / close body is opened with the knob turned, the latch will be held in the retracted position even if the hand is released from the operation unit, and when the open / close body is closed again, the latch will be released and the latch will be released. Advance into the market.

Japanese Unexamined Patent Publication No. 2016-196986 Japanese Unexamined Patent Publication No. 2010-281156

The conventional empty lock is premised on grasping or grasping the operation portion such as a doorknob, a lever handle, etc. to open the opening / closing body. For this reason, it is generally considered that it does not occur after the latch is retracted at the operation unit and then the hand is released from the operation unit before the opening / closing body is opened.

However, if the latch is retracted by the operation unit and then the hand is inadvertently released from the operation unit before the opening / closing body is opened, there is a problem that the latch suddenly advances to the strike due to the spring force. For example, in the case where the operation unit is not in a form suitable for opening the opening / closing body, the thumb of the hand holding a part of the opening / closing body is hung on the operation unit to retract the latch, and the opening / closing body is opened by the hand. After retracting the latch, there is a concern that the thumb may come off the operation unit in an attempt to grasp the opening / closing body before the opening / closing body is opened by the hand, and the latch may unexpectedly advance.

In particular, when used in combination with the auxiliary lock as described above, when the latch is retracted at the operation unit, the auxiliary lock is automatically locked, so that the latch suddenly advances before the opening / closing body is opened. Then, the auxiliary lock is in a locked state in which the latch is held in the advanced position, and there is a problem that it takes time and effort to start over from the unlocking operation of the auxiliary lock.

In view of the above background, the problem to be solved by the present invention is to provide an empty lock having excellent operability even in an application in which it is difficult to open the opening / closing body while operating the operation unit for retracting the latch. There is something in it.

In order to achieve the above-mentioned problems, the present invention has a latch that reciprocates between an advance position capable of engaging with a strike in a predetermined direction and a retracted position that cannot engage with the strike, and the latch is moved into the advance position. In an empty lock provided with a spring for urging the latch to return to the position, the latch is in a standby position facing the strike in the predetermined direction when the latch is retracted from the advance position to the retracted position. The return trigger retracts from the standby position due to the contact in the predetermined direction, and the latch moves to the lock position for holding the latch in the retracted position in conjunction with the retracting of the latch from the advanced position to the retracted position. A configuration is adopted in which a stopper that moves to a free position that allows the latch to advance in conjunction with the evacuation of the return trigger from the standby position is provided.

According to the above configuration, an opening / closing device is constructed in which an empty lock is arranged on the opening / closing body in a predetermined direction in which the latch can engage with the strike and the opening direction of the opening / closing body, and the latch is retracted by the operation unit. Can be done. When the operation to retract the latch is performed, the stopper moves to the lock position and holds the latch in the retracted position by interlocking with this, so even if the hand is released from the operation unit before opening the opening / closing body after that. , Latch does not advance unexpectedly. After that, when the opening / closing body is opened, the return trigger comes into contact with the strike, the stopper moves to the free position by interlocking using the contact, and the latch becomes in a state where it can advance by the force of the spring. Therefore, when the opening / closing body is closed after that, the latch can advance to the strike by the force of the spring.

Therefore, the present invention can provide an empty lock having excellent operability even in an application in which it is difficult to open the open / close body while operating the operation unit for retracting the latch by adopting the above configuration.

(A) is a cross-sectional view showing a state in which the latch of the empty lock according to the embodiment of the present invention is in the advanced position, and (b) is a cross-sectional view showing a state in which the latch is in the retracted position. Front view showing the switchgear according to the embodiment of the present invention. FIG. 2 is a sectional view showing an outline of a luggage rack provided with a switchgear in FIG. 2 by lines III-III in FIG. A perspective view showing the appearance of the empty lock of FIG. A perspective view showing the appearance of the seat of FIG. (A) is the left side surface of the opening / closing body of FIG. 2, and (b) is an enlarged view of the left end portion of the opening / closing body of FIG. Partial perspective view showing the appearance of the latch of FIG. Sectional drawing of line VIII-VIII of FIG. (A) is a perspective view showing the relationship between the inner case, the latch and the stopper in the state of FIG. 1 (a), and (b) is the inner case, the latch and the stopper in the state of FIG. 1 (b). Perspective view showing the relationship FIG. 1 (a) is a cross-sectional view taken along the line XX. A cross-sectional view showing a state when the latch is retracted from the state of FIG. 10 to the retracted position. Cross-sectional view showing when the opening / closing body is further opened from the state of FIG. A perspective view showing the appearance of the return trigger of FIG. FIG. 1 (b) is a cross-sectional view showing a time when a finger is released from the operation unit in the state of FIG. 1 (b). A cross-sectional view showing the middle of the opening operation in the state of FIG.

Hereinafter, an empty lock, a switchgear, and a luggage rack according to an embodiment of the present invention will be described with reference to the accompanying drawings.

The luggage racks shown in FIGS. 2 and 3 are configured so that the luggage entrance / exit surrounded by the top plate 1, the bottom plate 2, and the pair of side plates 3 can be opened and closed by the opening / closing device 10. Hereinafter, the direction in which the cargo entrance / exit is open is referred to as the front of the luggage rack, and the direction from the front to the back is referred to as the left-right direction. FIG. 2 is an excerpt of the switchgear 10 and shows the front surface thereof.

The switchgear 10 extends between the swing support portion 11 fixed to the top plate 1, a pair of left and right arm portions 12 swinging around the swing center R of the swing support portion 11, and these arm portions 12. It includes an opening / closing body 13, a receiving seat 14 that receives the opening / closing body 13 from below, an empty lock 20 arranged on the opening / closing body 13, and an auxiliary lock 30 arranged on the opening / closing body 13.

The swing axis (not shown) of the swing support portion 11 is oriented horizontally and in the left-right direction. The opening / closing body 13 includes a bar portion that receives an operation of swinging in the opening / closing direction. The opening / closing direction is a direction of swinging around the above-mentioned swing axis. The opening / closing body 13 is a tubular body having a thickness that can be grasped and swung by hand. The opening operation is an operation of swinging the opening / closing body 13 to the ascending side about the above-mentioned swinging shaft, and the closing operation is an operation of swinging the opening / closing body 13 to the descending side.

This luggage rack is intended to be installed as a storage space for trunk cases in railway vehicles, hotel lobbies, and the like. In the case of a large luggage such as a trunk case, even if a bar-shaped opening / closing body 13 having a thickness that allows the opening / closing body 13 to be held by hand is adopted, the opening / closing body 13 is placed at an intermediate height between the top plate 1 and the bottom plate 2. For example, it is possible to prevent the luggage from being placed on the bottom plate 2 from the luggage entrance / exit, so that there is no problem.

The mounting position of the swing support portion 11 and the length of the arm portion 12 are set so that the opening / closing body 13 does not protrude from the top plate 1, the bottom plate 2 and the side plate 3 during the above-mentioned opening / closing operation. .. The receiving seat 14 is attached to the side plate 3.

As shown in FIG. 4, the empty lock 20 is unitized in an engraved shape. The empty lock 20 is attached to the left end portion of the opening / closing body 13 shown in FIGS. 2 and 3.

The left receiving seat 14 shown in FIG. 2 functions as a strike corresponding to the empty lock 20. As shown in FIG. 5, the receiving seat 14 has a receiving port 14a having a depth in the left-right direction, a sliding surface 14b extending upward from the upper edge of the receiving port 14a, and a seating surface 14c that determines a lowering limit of the opening / closing body 13. And have. Although the receiving ports 14a are arranged in two rows, the one used in the illustrated example is the receiving port 14a on the front side, and the other receiving ports 14a are left-right wrong (in the case of the illustrated example, they are empty on the right side of the opening / closing body 13). (When arranging the lock 20), the receiving seat 14 having the same shape can be used as a strike.

As shown in FIGS. 1, 4, and 6, the empty lock 20 includes a latch case 21, a latch 22, a spring 23, an operation unit 24, a return trigger 25, a first return spring 26, and a stopper 27. And a second return spring 28.

The latch case 21 has an outer case 21a and an inner case 21b inserted inside the outer case 21a. The outer case 21a and the inner case 21b each have a bottomed tubular shape. The inner case 21b has a guide cylinder portion that guides the latch 22 in the advancing / retreating direction, a cylinder bottom portion that receives the spring 23, and a step portion 21d that receives one end of the first return spring 26. The guide cylinder portion of the inner case 21b and the cylinder wall portion of the outer case 21a facing the guide cylinder portion form a guide cylinder portion that guides the return trigger 25 in the advancing / retreating direction. The guide cylinder portion of the inner case 21b is provided with a notch portion 21c for forming a moving space between the return trigger 25 and the stopper 27.

The latch 22 reciprocates in a linear direction between an advance position that can be engaged with the receiving portion 14a of the receiving seat 14 that functions as a strike in a predetermined direction and a retracting position that cannot be engaged with the receiving port 14a. The predetermined direction corresponds to the opening direction of the opening / closing body 13. The advancing / retreating direction of the latch 22 corresponds to the left-right direction, the advancing direction corresponds to the left direction, and the retracting direction corresponds to the right direction.

As shown in FIGS. 1 and 4, the latch 22 is a triangular latch type latch bolt. The latch 22 has a tip portion formed in a triangular shape with a flat surface extending in the left-right direction and a slope retreating downward to the right from the left edge of the flat surface. The latch 22 projects from the latch case 21 in the advancing direction at its tip. Further, the latch 22 has a shaft portion 22a. The shaft portion 22a penetrates the bottom of the cylinder of the latch case 21 and extends in the retracting direction. The retaining ring attached to the shaft portion 22a prevents the latch 22 from coming off with respect to the latch case 21 in the advancing direction. The shaft portion 22a is connected to the leg of the operation portion 24 and is connected to the auxiliary lock 30 shown in FIG.

The spring 23 shown in FIG. 1 urges the latch 22 to return to the advanced position. The urging force of the spring 23 becomes so large that the latch 22 retracts from the advanced position. The spring 23 is a coil spring interposed between the right end portion of the latch 22 and the cylinder bottom portion of the inner case 21b.

The operation unit 24 receives an operation of retracting the latch 22 from the advanced position to the retracted position and transmits the operation to the latch 22. The operation unit 24 is a slider that can be moved with respect to the opening / closing body 13 in the same direction as the advance / retreat direction of the latch 22. The operation unit 24 can be slid to the right from the standby position shown in FIGS. 1 (a) and 6 by hooking a finger on the finger hook portion exposed on the front surface of the opening / closing body 13. If the return trigger 25 and the stopper 27 are not provided, when the finger is released from the operation unit 24, the latch 22 is returned to the advanced position by the elastic rebound of the spring 23, and the operation unit 24 is integrally moved to the left. Although it is moved and returns to the standby position, by providing the return trigger 25 and the stopper 27 as described later, it is possible to prevent the latch 22 from returning to the advance position even if the hand is released from the operation unit.

As shown in FIGS. 1, 7, and 8, the latch 22 has a shaft portion 22a slidably fitted inside the latch 22 in the left-right direction, and the stopper 27 and the second return spring 28 are slidably fitted to the latch 22. In order to incorporate it into the latch body 221 and the latch cover 222, the structure is divided into two parts. The latch 22 has a recess 22b at a position facing the notch 21c of the inner case 21b. The recess 22b is for accommodating the second return spring 28 inside the latch 22 and for immersing the stopper 27.

Further, as shown in FIGS. 1, 7, and 9, the latch 22 has a groove portion 22c extending in the left-right direction. The groove bottom surface of the groove portion 22c intersects the opening edge of the recess 22b and faces the notch portion 21c of the inner case 21b.

As shown in FIGS. 1, 10, and 11, the return trigger 25 faces the upper edge of the receiving port 14a in a predetermined direction (opening direction of the opening / closing body 13) when the latch 22 is retracted from the advanced position to the retracted position. As shown by the alternate long and short dash line in FIG. 12, it reciprocates in a straight line between the standby position and the release position that has escaped from the receiving port 14a. The linear direction corresponds to the left-right direction.

The first return spring 26 shown in FIG. 1 urges the return trigger 25 to return to the standby position. The first return spring 26 is a coil spring interposed between the step portion 21d of the inner case 21b and the step portion 25c of the return trigger 25. The urging force of the first return spring 26 becomes so large that the return trigger 25 retracts from the standby position.

The return trigger 25 has a convex portion 25a that is inserted into the groove portion 22c of the latch 22 through the notch portion 21c of the latch case 21 (see FIG. 13). When the return trigger 25 is in the standby position, the return trigger 25 is locked to the notch 21c at the convex portion 25a to prevent the return trigger 25 from coming off from the latch case 21.

When the return trigger 25 is in the standby position shown in FIGS. 1, 10, and 11, the return trigger 25 protrudes from the latch case 21 at the tip portion formed in a chevron shape convex to the left, and faces the receiving seat 14 in the vertical direction. When the upper slope of the chevron tip portion of the return trigger 25 abuts upward on the upper edge of the receiving port 14a, the return trigger 25 retracts from the standby position to the release position due to the rightward component force generated from the reaction force.

The stopper 27 has a lock position protruding from the recess 22b of the latch 22 as shown in FIGS. 1B, 7, 8 and 9B, and is shown in FIGS. 1A and 9A. It moves between the free position immersed in the recess 22b and the like. As shown in FIG. 8, the stopper 27 includes a base portion that is permanently present in the recess 22b of the latch main body 221 and a tip portion that protrudes from the recess 22b at the locked position. The base of the stopper 27 is locked to the opening edge of the latch cover 222 at the locked position so that the tip of the stopper 27 cannot be further projected from the recess 22b. As shown in FIGS. 1 (b) and 9 (b), the stopper 27 at the lock position plunges into the notch 21c of the inner case 21b at its tip.

The second return spring 28 shown in FIG. 1 urges the stopper 27 to return to the locked position. The second return spring 28 is a coil spring interposed between the concave bottom surface of the concave portion 22b of the latch 22 and the base portion of the stopper 27. The urging force of the second return spring 28 becomes so large that the stopper 27 is immersed in the recess 22b.

The stopper 27 holds the latch 22 in the retracted position by engaging with the convex portion 25a of the return trigger 25 which is prevented from coming off by the notch portion 21c of the latch case 21 at the standby position. Further, the stopper 27 is pushed by the slope of the convex portion 25a of the return trigger 25 that retracts from the standby position. When the slope 25b of the convex portion 25a abuts on the tip end portion of the stopper 27 in the right direction, the stopper 27 is pushed into the concave portion 22b of the latch 22 by the component force generated from the reaction force and moves to the free position.

As shown in FIG. 6, the auxiliary lock 30 is housed inside the opening / closing body 13. The auxiliary lock 30 switches to the lock standby state in conjunction with the evacuation of the latch 22 from the advance position to the retracted position, and the latch 22 interlocks with the advance of the latch 22 from the retracted position to the advance position in the lock standby state. Switch to the locked state to hold the in the advanced position. The auxiliary lock 30 is a dial lock having a dial portion on the front surface of the opening / closing body 13. In the figure, a dial lock, which is a kind of code lock, is exemplified as the auxiliary lock 30, but since various auxiliary locks having such a function are well known, an appropriate auxiliary lock may be adopted, and the internal structure thereof may be adopted. The detailed description of is omitted.

When the luggage rack is not in use, the auxiliary lock 30 shown in FIGS. 2 and 6 is in the locked state, and the opening / closing body 13 is in the closed position drawn by the solid line in FIG. As shown in the above, the latch 22 is in the advance position where it has rushed into the receiving port 14a, the return trigger 25 is in the standby position where it has rushed into the receiving port 14a, and the stopper 27 rides on the convex portion 25a and is immersed in the concave portion 22b of the latch 22. In position.

The user who has secured the unlocking authority of the auxiliary lock 30 by advance reservation or the like first unlocks the auxiliary lock 30 by matching the dial portion of the auxiliary lock 30 shown in FIG. 6 with the unlocking number transmitted with the reservation. Put it in a state.

After that, when the user puts a finger on the operation unit 24 and moves it to the right, the latch 22 shown in FIGS. 1 (a) and 10 is opposed to the spring 23 in FIG. 1 (b). Evacuate to the retracted position shown in 11. At this time, the auxiliary lock 30 automatically switches to the lock ready state by resetting the dial portion to zero, and the return trigger 25 stays in the standby position due to the resistance of the first return spring 26, and the second return spring 28 is attached. The stopper 27 that receives the force slides to the right on the convex portion 25a, rushes into the notch portion 21c of the inner case 21b from the concave portion 22b while descending the slope 25b of the convex portion 25a, and is prevented from coming off by the notch portion 21c. By engaging with the return trigger 25 in the standby position, the latch 22 is held in the retracted position.
Here, when the user releases the finger from the operation unit 24, as shown in FIG. 14, the operation unit 24 and the shaft unit 22a move to the left by the auxiliary lock return spring (not shown) built in the auxiliary lock 30. However, since the return trigger 25 and the stopper 27 are engaged with each other in the latch 22, the latch 22 is prevented from returning to the advanced position.

After that, when the user performs an opening operation on the opening / closing body 13, as shown in FIG. 12, the upper slope of the chevron tip portion of the return trigger 25 in the standby position abuts upward on the upper edge of the receiving port 14a. The return trigger 25 retracts to the release position (shown by the alternate long and short dash line in the figure) where the return trigger 25 has escaped from the receiving port 14a. At this time, as shown in FIG. 15, since the slope 25b of the convex portion 25a of the return trigger 25 to be retracted moves to the right with respect to the latch 22, the stopper 27 is pushed into the concave portion 22b of the latch 22. become. The stopper 27 is pushed into the recess 22b from the slope 25b of the convex portion 25a against the second return spring 28, so that the stopper 27 moves to a free position immersed in the recess 22b again. Therefore, the latch 22 is in a state where it can advance to the left.

When the stopper 27 is immersed in the recess 22b again, as shown in FIG. 12, the opening / closing body 13 is raised to a swing angle at which the latch 22 cannot re-enter the receiving port 14a. Therefore, the latch 22 that receives the urging of the spring 23 slides upward on the sliding surface 14b of the receiving seat 14, and the chevron tip portion of the returning trigger 25 that has escaped from the receiving port 14a is also the first returning spring. Although it is pushed to the left by the urging of 26, it slides upward on the sliding surface 14b.

As the ascent of the opening / closing body 13 further progresses, the latch 22 and the return trigger 25 eventually finish passing upward through the sliding surface 14b, and are further advanced to the left under the urgency of the spring 23 and the first return spring 26, respectively. It will be.

After that, when the user places the luggage on the bottom plate 2, grasps the opening / closing body 13 by hand and performs the closing operation, the latch 22 and the return trigger 25 only operate in the opposite direction to the opening operation, and the stopper 27 operates. There is no change in the state of being pushed to the free position by the convex portion 25a of the return trigger 25. That is, the slope of the tip of the latch 22 and the lower slope of the chevron tip of the return trigger 25 each come into contact with the upper edge of the sliding surface 14b and retract slightly to the right, and the sliding surface 14b is further retracted. When it slides downward and passes the upper edge of the receiving port 14a downward, it rushes into the receiving port 14a by the urgency of the spring 23 and the first return spring 26, whereby the latch 22 returns to the advanced position and the return trigger 25 stands by. It will return to the position (see the drawings as appropriate below).

The empty lock 20 is as described above, and has an advance position capable of engaging with the strike (receptacle 14a of the receiving seat 14) in a predetermined direction and cannot engage with the strike (receptacle 14a of the receiving seat 14). A latch 22 that reciprocates between the retracted position, a spring 23 that urges the latch 22 to return to the advanced position, and a strike (receptacle 14a of the receiving seat 14) when the latch 22 is retracted from the advanced position to the retracted position. ) In the standby position facing the predetermined direction, and the return trigger 25 that retracts from the standby position due to contact with the strike (receptacle 14a of the receiving seat 14) in the predetermined direction, and the latch 22 retracts from the advanced position to the retracted position. By providing a stopper 27 that moves to a lock position that holds the latch 22 in the retracted position in conjunction with the above, and moves to a free position that allows the latch 22 to advance in conjunction with the evacuation of the return trigger 25 from the standby position. , The empty lock 20 is arranged on the opening / closing body 13 in correspondence with the predetermined direction in which the latch 22 can engage with the strike (the receiving port 14a of the receiving seat 14) and the opening direction of the opening / closing body 13, and the latch 22 is arranged by the operation unit 24. It is possible to construct an opening / closing device 10 for retracting. When the operation of retracting the latch 22 is performed, the stopper 27 moves to the locked position and holds the latch 22 in the retracted position in an interlocking manner using this. Even if the hand is released, the latch 22 does not unexpectedly advance. After that, when the opening / closing body 13 is opened, the return trigger 25 comes into contact with the strike (the receiving port 14a of the receiving seat 14), the stopper 27 moves to the free position in conjunction with the contact, and the latch 22 moves to the spring 23. You will be able to advance by force. Therefore, when the opening / closing body 13 is subsequently closed, the latch 22 can advance to the strike (the receiving port 14a of the receiving seat 14) by the force of the spring 23. Therefore, the empty lock 20 is excellent in operability even in an application where it is difficult to open the opening / closing body 13 while operating the operation unit 24 for retracting the latch 22.

In particular, the empty lock 20 has a latch case 21 that guides the latch 22 and the return trigger 25, a first return spring 26 that urges the return trigger 25 to return to the standby position, and a stopper 27 at the lock position. A second return spring 28 for urging to return is provided, a first return spring 26 is interposed between the latch case 21 and the return trigger 25, and the second return spring 28 is a recess 22b of the latch 22. The stopper 27 moves between the locked position protruding from the recess 22b and the free position immersed in the recess 22b, and the stopper 27 at the locked position comes off the latch case 21 at the standby position. By adopting a structure that holds the latch 22 in the retracted position by engaging with the stopped return trigger 25 and moves to the free position by being pushed into the recess 22b from the return trigger 25 that retracts from the standby position, the latch 22 It is possible to realize the above-mentioned interlocking between the latch 22 and the return trigger 25 and the stopper 27 while suppressing the increase in size of the latch case 21 by arranging the stopper 27 and the second return spring 28 using the inside. Further, the return trigger 25 is arranged beside the latch 22, and the stopper 27 and the second return spring 28 are arranged by using the internal space of the latch 22 having a width to secure the strength. The latch case 21 can be arranged inside the opening / closing body 13 even if the opening / closing body 13 has a thickness that can be gripped by.

Further, the opening / closing device 10 includes an opening / closing body 13 that receives an opening / closing operation, an empty lock 20, and an auxiliary lock 30 that switches to a lock standby state in conjunction with the retracting of the latch 22 from the advanced position to the retracted position. The empty lock 20 and the auxiliary lock 30 are arranged on the opening / closing body 13, and the latch 20 is latched by the operation unit 24 by adopting a structure having an operation unit 24 for receiving an operation of retracting the latch 22 from the advance position to the retracted position. Even if the hand is released from the operation unit 24 after the 22 is retracted, the trouble of re-unlocking the auxiliary lock 30 does not occur, and the operability is excellent.

Further, the luggage rack is provided with the opening / closing device 10, and once the operation of unlocking the auxiliary lock 30 and the operation of retracting the latch 22 at the operation unit 24 of the empty lock 20 are performed, the hand that grips the opening / closing body 13. Since the opening / closing body 13 can be grasped and swung in the opening direction regardless of whether or not it is separated from the operation unit 24, the opening / closing device 10 prevents unauthorized use of the luggage rack and is convenient for a legitimate user. Can provide a good luggage rack.

The empty lock and switchgear according to the present invention can also be used for other purposes such as doors of houses, doors such as windows, and cargo doors of vehicles. The embodiments disclosed this time should be considered to be exemplary and not restrictive in all respects. Therefore, the scope of the present invention is indicated by the scope of claims and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

10 Switchgear 13 Switchgear 14a Receptacle (strike)
20 Empty lock 21 Latch case 22 Latch 22b Recess 23 Spring 24 Operation unit 25 Return trigger 26 1st return spring 27 Stopper 28 2nd return spring 30 Auxiliary lock

Claims (4)

A latch that reciprocates between an advance position that can engage with a strike in a predetermined direction and a retracted position that cannot engage with the strike.
In an empty lock comprising a spring that urges the latch to return to the advanced position.
A return trigger that is in a standby position facing the strike in the predetermined direction when the latch is retracted from the advance position to the retracted position and retracts from the standby position by contact with the strike in the predetermined direction.
The latch moves from the advanced position to the locked position for holding the latch in the retracted position in conjunction with the evacuation from the retracted position, and the latch advances in conjunction with the evacuation of the return trigger from the standby position. An empty lock characterized by being equipped with a stopper that moves to a free position that allows for. A latch case that guides the latch and the return trigger,
A first return spring that urges the return trigger to return to the standby position,
A second return spring that urges the stopper to return to the lock position,
Equipped with
The first return spring is interposed between the latch case and the return trigger.
The second return spring is housed in the recess of the latch.
The stopper moves between the lock position protruding from the recess of the latch and the free position immersed in the recess.
The stopper at the lock position engages with the return trigger held in the latch case at the standby position to hold the latch at the retracted position, and the return trigger retracts from the standby position. The empty lock according to claim 1, which moves to the free position by being pushed into the recess of the latch. The opening / closing body that receives the opening / closing operation, the empty lock according to claim 1 or 2, and the auxiliary lock that switches to the lock standby state in conjunction with the evacuation of the latch from the advance position to the retracted position are provided.
An opening / closing device having an operation unit in which the empty lock and the auxiliary lock are arranged on the opening / closing body, and the empty lock receives an operation of retracting the latch from the advanced position to the retracted position. A luggage rack provided with the switchgear according to claim 3.

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