JP4691469B2 - Latch device - Google Patents

Description

  The present invention relates to an improvement of a latch device used for engaging a movable body such as a hinged door with a main body at a position before the operation of the movable body.

  There is a combination of a latch that prevents a movable body such as a hinged door from opening during an earthquake, and a damper that suppresses the impact when the movable body is closed. (See Patent Document 1)

However, in this latch, the movable part of the latch body and the damper are not related at all. Therefore, on the movable body side, a latch receiving part for the movable part of the latch body, and a damper contact that hits the damper when closed. Protrusions were provided respectively.
JP 2005-180050 A

  The main problem to be solved by the present invention is that an impact when a movable body such as a hinged door is closed when the movable body is closed against a latch device having a function of preventing an unexpected opening operation during an earthquake. The reason is that a damper function for preventing the occurrence is rationally provided.

In order to achieve the above object, in the first invention, the latch device has the following configurations (1) to (9).
(1) A latch device that catches and captures a striker body provided on the movable body side at a reference stop position provided on the main body side before the movement,
(2) a base provided with a mounting portion for the main body;
(3) A slider combined with the base so as to be movable back and forth in the direction along the moving direction of the movable body;
(4) A catcher which is combined with the slider so as to be rotatable, and has a hooking claw to the hooked portion of the striker body and a hitting portion to the front end of the striker body,
(5) The catcher is positioned at a standby position where the catching claw is not engaged with the striker body at the forward movement position of the slider, and the catcher is rotated by the contact of the front end of the striker body with the abutting portion at the standby position. Posture control means for allowing the catcher to be positioned at an engagement position for engaging the catch claw with the catcher body,
(6) damper means for pressing and abutting the catching portion of the catcher from the rear;
(7) retraction means for always urging the slider toward the retracted position;
(8) An earthquake locking means for preventing the slider from moving to the forward position during an earthquake , and
(9) This earthquake lock means
A spherical weight that falls from the seat of the base when a vibration of a predetermined magnitude is applied;
A spherical weight comprising at least an upper surface portion of a slider under the seat, a forward wall formed on the slider adjacent to the upper surface portion, and a rear wall formed on the base so as to face the forward wall. Consisting of rolling space,
Movement of the slider in the retracted position to the advanced position is prevented by the spherical weight being caught between the forward wall and the rear wall .

In order to achieve the above object, in the second invention, the latch device has the following configurations (1) to (9).
(1) A striker body provided on the side of the movable body configured to be biased toward a reference stop position before the movement from at least a predetermined movable position is provided on the main body side. A latch device that catches and catches at a reference stop position,
(2) a base provided with a mounting portion for the main body;
(3) A slider combined with the base so as to be movable back and forth in the direction along the moving direction of the movable body;
(4) A catcher which is combined with the slider so as to be rotatable, and has a hooking claw to the hooked portion of the striker body and a hitting portion to the front end of the striker body,
(5) The catcher is positioned at a standby position where the catching claw is not engaged with the striker body at the forward movement position of the slider, and the catcher is rotated by the contact of the front end of the striker body with the abutting portion at the standby position. Posture control means for allowing the catcher to be positioned at an engagement position for engaging the catch claw with the catcher body,
(6) damper means for pressing and abutting the catching portion of the catcher from the rear;
(7) It is provided with an earthquake locking means for preventing the slider from moving to the forward position in the event of an earthquake ,
(8) This earthquake lock means
A spherical weight that falls from the seat of the base when a vibration of a predetermined magnitude is applied;
A spherical weight comprising at least an upper surface portion of a slider under the seat, a forward wall formed on the slider adjacent to the upper surface portion, and a rear wall formed on the base so as to face the forward wall. Consisting of rolling space,
Movement of the slider in the retracted position to the advanced position is prevented by the spherical weight being caught between the forward wall and the rear wall .

  When the movable body is moved toward the reference stop position such as closing the hinged door, the front end of the striker body is abutted against the abutting portion of the catcher that is at the standby position and positions the slider at the forward movement position. When this contact is made, the catcher is rotated to the engagement position, and the engagement claw is engaged with the engagement portion of the striker body. Since this abutting portion is pressed from behind by the damper means, no impact is caused by the abutting. When the catcher is rotated to the engagement position, the slider is allowed to move backward. In the first invention, the urging force of the pull-in means, and in the second invention, a predetermined opening position on the movable body side, etc. The movable body is moved and positioned to the reference stop position by the urging force applied from.

  When the movable body at the reference stop position is opened, the slider that engages the striker with the catcher is moved to the forward position. When the slider is moved to the forward movement position, the catcher is rotated to the standby position by the pressing of the abutting portion by the damper means and the posture control means, whereby the slider is again positioned at the forward movement position, and the striker body is released from the latch device. The opening operation of the movable body can be continued.

  If an earthquake occurs when the movable body is at the reference stop position, the movement of the slider to the forward position is blocked by the earthquake locking means, so the catcher is not rotated to the standby position, and the striker body It remains trapped in the latch device. This prevents the movable body from opening unexpectedly during an earthquake.

The earthquake locking means,
A spherical weight that falls from the seat of the base when a vibration of a predetermined magnitude is applied;
A spherical weight comprising at least an upper surface portion of a slider under the seat, a forward wall formed on the slider adjacent to the upper surface portion, and a rear wall formed on the base so as to face the forward wall. Consisting of rolling space,
In some cases, the slider in the retracted position is prevented from moving to the forward position by blocking the spherical weight between the forward wall and the rear wall.

In this case, the upper surface of the slider is further provided with undulations to form the lowest return area,
The portion of the forward wall behind this return area is a lift wall that is inclined to gradually approach the rear as it goes upwards.
A spherical weight return lane is formed behind the top of the lift wall in the slider,
The spherical weight settled in the return area by the movement of the slider toward the forward position may be lifted by the lift wall and returned to the seat through the return lane.

In addition, in this case, an earthquake locking means is further provided at two places spaced apart in the moving direction of the slider,
The drop port from one seat of the locking means at the time of two earthquakes is directed to one side crossing the moving direction of the slider,
The drop port from the other seat portion of the two earthquake locking means may be directed to the other side crossing the slider moving direction.

  If an earthquake occurs while the movable body is at the reference stop position, the movable body is moved from the reference stop position by the vibration, and the slider is also moved toward the forward movement position along with this, but it falls into the rolling space. The slider is not moved to the advanced position by the spherical weight.

  If the return area is provided on the upper surface of the slider, when the earthquake stops, the spherical weight moves to the return area by gravity and settles there. When the movable body is opened at this time, the slider is moved toward the forward movement position, the pitch between the rearward wall of the base and the lift wall is narrowed, and the spherical weight that was in the return area is inclined to the lift wall. Is then lifted into the return lane, returns to the seat through this return lane. This allows the slider to move to the forward position. When the slider reaches the forward movement position, the catcher is positioned at the standby position, and the striker body is released from the latch device, so that the movable body can move to a desired opening position or the like.

  In addition, the earthquake locking means are provided at two locations spaced apart in the moving direction of the slider, and the drop opening of the spherical weight constituting this is reversed between one of the two earthquake locking means and the other. Therefore, even if one of the earthquake locking means may return a spherical weight to the seat through the lift wall and the return lane depending on the direction of vibration, the other earthquake locking means As long as vibration that causes the movable body to open or the like is applied without returning, the slider is not moved to the forward position regardless of the direction of the vibration.

The posture control means;
A slider provided behind the center of rotation of the catcher;
It has a guide part of this slider provided on the base,
The guide part includes a main lane along the moving direction of the slider and a branch lane extending in a direction crossing the main lane following the front end of the main lane.
When the slider in the main lane reaches the front end of the main lane due to the movement of the slider toward the forward position, the slider enters the branch lane by the biasing means, and the catcher is positioned in the standby position.
When the front end of the striker body of the movable body was abutted against the abutting part of the catcher in the standby position, the abutting part was retreated against the urging force of the damper means, and the catcher was rotated to be in the branch lane. The slider may be configured to enter the main lane.

  In this case, the state where the slider is in the forward position can be stably maintained, and at the standby position by the striker body hitting the catcher hitting portion by the movement of the movable body toward the reference stop position. The catcher can be rotated to the engaging position, and at the same time, the slider can be smoothly retracted. When the movable body at the reference stop position is opened, the slider that has been moved from the retracted position to the advanced position is held at the advanced position, and the catcher is rotated from the engagement position to the standby position. The striker body can be released so that the opening operation of the movable body is not inhibited.

  The damper means includes a cylinder body and a plunger rod that is constantly urged in a direction protruding from the cylinder body, and is configured to apply braking against the pushing against the urge of the plunger rod. Sometimes it is left.

  In this case, the plunger that is pushed into the cylinder body in this retreat of the abutting portion that is retreated by the striker body of the movable body that has been moved toward the reference stop position being abutted against the abutting portion of the catcher Braking can be applied by the rod, so that no impact is generated in the final stage of the movement of the movable body.

  According to the latch device of the present invention, when the catcher, which is pressed against the abutting portion by the damper means from the rear, is at the standby position, the movable body striker body that is closed toward the reference stop position is moved to this position. Abutting against the abutting part from the front to attenuate this abutting force, the catcher is rotated to the engaging position by this abutting to catch the striker body, and further, the slider is moved to the retracted position as a trigger to move the movable body Since it is designed to guide the motor to the reference stop position, the function of preventing the movable body from opening unexpectedly during an earthquake and closing the movable body, etc. by rational linkage between the damper means and the catcher Providing a compact latch device having a damper function to prevent the occurrence of shock when Kill. The downsizing of the latch device contributes to requests for effective use of the space in the main body provided with the latch device.

  The best mode for carrying out the present invention will be described below with reference to FIGS.

  1 to 8 show one embodiment (first example) of the present invention, and FIGS. 9 to 18 show another one (second example) of the embodiment of the present invention. Each is shown.

  1 and 2 show the state of the latch device R in which the catcher 3 is in the standby position and the slider 2 is in the forward position, and FIGS. 3 and 4 show that the catcher 3 is in the engaging position and the slider 2 is retracted. FIG. 5 shows the state of the latch device R in the position. FIG. 5 shows that the spherical weight 60 constituting the earthquake locking means 6 is dropped due to the earthquake from the state shown in FIGS. The state where the forward movement of the slider 2 is further prevented between them is shown. 6 and 7 show the striker body S used in the first example, and FIG. 8 shows the parts constituting the latch device R of the first example as separated.

  9 and 10 show the state of the latch device R in which the catcher 3 is in the standby position and the slider 2 is in the forward position, and FIGS. 11 and 12 show the catcher 3 in the engagement position and the slider 2. FIG. 13 shows the state of the latch device R in the retracted position. FIG. 13 shows that the spherical weight 60 constituting the locking means 6 at the time of earthquake falls from the state of FIGS. FIG. 14 shows a state in which the movable body M is opened and operated when the earthquake stops from the state shown in FIG. The state immediately after returning 60 to the seat part 61 provided in the base 1 side is shown, respectively. 15 shows the main parts of the base 1 and the slider 2, FIGS. 16 and 17 show the striker body S used in the second example, and FIG. 18 shows the parts constituting the latch device R of the second example. Each is shown as a separate state.

  The latch device R according to this embodiment is used for engaging the movable body M with the main body H at a position before the operation of the movable body M.

  For example, the movable body M is a hinged door M ′, the main body H is a storage body main body whose opening Ha is closed by the hinged door M ′, and the hinged door M ′ is located on one of the longitudinal edges of the main body H. In the case where the opening edge portion is assembled to the opening edge portion so as to be rotatable around a vertical rotation axis by the hinge means, the latch device R has such a free end side of the hinged door M ′ as the opening edge portion of the main body H. It is used so as to engage with the hinged door M ′ at the reference stop position (closed position) of the hinged door M ′ that is in contact with or closest to the hinged door M ′ to suppress the opening of the hinged door M ′.

  That is, the latch device R is attached to the main body H side, and the striker body S provided on the movable body M side such as the hinged door M ′ is in a reference stop position before the movable body M is opened. It is something to catch.

  In the case of the above example in which the movable body M is the hinged door M ′, typically, the striker body S is the inner surface (the side facing the internal space of the main body H in the closed position) on the free end side of the hinged door M ′. And is provided so as to enter the main body H in the closed position. On the other hand, in the case of this example, the latch device R is typically the inner surface of the top portion Hb of the main body H, close to the opening edge, and the striker body S is closed when the hinged door M ′ is closed. Provided where it enters.

  In the illustrated example, the striker body S includes an attachment plate portion Sa for the movable body M, and a pair of side plates Sb and Sb protruding forward from the front surface of the attachment plate portion Sa, and the pair of side plates Sb and Sb. A bottom plate Sc extending between the lower sides, a claw body Sd supported between the pair of side plates Sb and Sb so as to be movable up and down on the front end side of the side plate Sb, and an urging force so that the claw body Sd is always positioned at the raised position. Spring Sf. In this example, when the movable body M is closed toward the reference stop position, the catcher 3 is in a state where the distal end of the hooking pawl 30 described later is positioned above the movement locus of the distal end of the pawl body Sd. It is assumed that the catcher 3 is in the engagement position when it is in the standby position and the engagement claw 30 is positioned below the movement locus. That is, when the catching claw 30 of the catcher 3 enters behind the claw body Sd, the striker body S is engaged with the latch device R, and in the illustrated example, the back surface of the claw body Sd is to be described later. It functions as the hooking portion Se.

The latch device R differs in the following two points between the first example shown in FIGS. 1 to 8 and the second example shown in FIGS. 9 to 18, but the other points are substantially the same. The same.
(1) In the first example, the movable body M in which the striker body S is engaged with the catcher 3 by the closing operation is forcibly moved to the reference stop position (position in FIG. 3) by the retracting means 7 of the slider 2. . On the other hand, in the second example, the movable body M that is being closed is biased from the predetermined opening position toward the reference stop position, and this biasing causes the striker body S to move. The movable body M engaged with the catcher 3 is forcibly moved to the reference stop position (position in FIG. 11). When the movable body M is the hinged door M ′, the biasing of the movable body M is typically realized by providing a spring for applying such a biasing force to the hinge means of the hinged door M ′. Can do. (So-called spring hinge)
(2) In the first example, the earthquake locking means 6 is provided in one place, but in the second example, it is provided in two places.

In both the first example and the second example, the latch device R is composed of the following elements (1) to (6).
(1) Base 1
(2) Slider 2
(3) Catcher 3
(4) Attitude control means 4
(5) Damper means 5
(6) Earthquake locking means 6

(Base 1)
The base 1 includes an attachment portion 101 for the main body H. In this embodiment, the base 1 includes a top plate 102, a bottom plate 103, left and right side plates 104, 104, and a back plate 105, and is configured to have a box shape with the front open. The top plate 102 is attached to the top portion Hb of the main body H by screws or the like so as to be in close contact with the inner surface of the top portion Hb of the main body H.

(Slider 2)
The slider 2 is combined with the base 1 so as to be movable back and forth in the direction along the moving direction of the movable body M.

  In this embodiment, the slider 2 substantially extends between the inner surfaces of the left and right side plates 104 and 104 of the base 1 and between the inner surface of the top plate 102 and the inner surface of the bottom plate 103 of the base 1. Configured to have a height. The slider 2 is configured to move back and forth regularly by placing guide ribs 201 provided at the bottom and both left and right sides in guide grooves 106 formed inside the base 1.

  A frame-like portion 202 opened in the vertical direction is formed on the front end side of the slider 2, and the catcher 3 is rotatably assembled to the slider 2 while being accommodated in the frame-like portion 202. ing. That is, on the rear end side of the frame-shaped portion 202, shaft holes 202a are formed in the left and right plate portions constituting the frame-shaped portion 202, and the catcher 3 has shaft protrusions 323 formed on the left and right sides thereof. The slider 2 is assembled in the shaft hole 202a. The rear end of the assembled catcher 3 protrudes rearward from the rear ends of the left and right plate portions constituting the frame-like portion 202, and a slider described later is provided at the rear end of the catcher 3 thus protruded. 322 is provided. The upper surface portion 204 of the slider 2 behind the frame-shaped portion 202 is one of the components of the earthquake locking means 6.

  A combination part 203 with the damper means 5 is formed in the lower part of the slider 2. The front portion 203a of the combination portion 203 is positioned immediately below the position where the shaft hole 202a is formed in the frame-shaped portion 202, and the combination portion 203 has a closed end 501 of a cylinder body 50, which will be described later, constituting the damper means 5. A through hole 203b on the side is formed, and the closed end 501 side of the cylinder body 50 is always abutted against the second portion 33 (abutting portion 31) described later of the catcher 3 from the rear through the through hole 203b. It is like that.

(Catcher 3)
The catcher 3 is combined with the slider 2 so as to be rotatable, and includes a hooking claw 30 to the hooked portion Se of the striker body S and a contact portion 31 to the front end Sg of the striker body S.

  In this embodiment, the catcher 3 has a first portion 32 having a center of rotation of the catcher 3 between the front end and the rear end, and a hooking claw 30 for the striker body S at the front end. And a second portion 33 protruding from the first portion 32 in a direction crossing the first portion 32. In the illustrated example, both the first portion 32 and the second portion 33 are configured to have a plate shape slightly narrower than the left and right dimensions in the frame of the frame-like portion 202 of the slider 2. The upper end of the second portion 33 is integrally connected to the lower portion of the first portion 32 at a position approximately in the middle of the length of the first portion 32. A shaft through hole 321 extending in the width direction is formed at the rear end of the first portion 32, and the attitude control of the catcher 3 is performed on both the left and right sides of the rear end of the first portion 32 by the shaft passed through the through hole 321. A slider 322 is formed. The shaft protrusions 323 are formed on the left and right sides of the first portion 32 between the connecting portion of the second portion 33 and the rear end. The hooking claw 30 protrudes downward from the front end of the first portion 32. When the movable body M is closed to the reference stop position, the front end Sg of the striker body S is abutted against the second portion 33 from the front, and as a result, the catcher 3 in the standby position is rotated to the engaging position as will be described later. The At the same time, the slider 2 which has been positioned at the forward movement position by the catcher 3 at the standby position is biased by the pull-in means 7 in the first example and to the movable body M side in the second example. The movable body M is moved back to the retracted position by the urging force toward the operated reference stop position, and the movable body M is positioned at the reference stop position by engagement of the catcher 3 with the striker body S. That is, in the illustrated example, the second portion 33 functions as the abutting portion 31.

(Attitude control means 4)
The posture control means 4 positions the catcher 3 at a standby position where the catching claw 30 is not engaged with the striker body S at the forward movement position of the slider 2, and the front end Sg of the striker body S against the abutting portion 31 at the standby position. The catcher 3 is allowed to retreat by the rotation of the catcher 3 due to the abutment, and the catcher 3 is positioned at the engaging position where the engaging claw 30 is engaged with the striker body S.

  In this embodiment, the posture control means 4 includes the slider 322 provided behind the center of rotation of the catcher 3 and the guide of the slider 322 provided on the base 1. It is comprised from the part 107. FIG. In the illustrated example, the sliders 322 are respectively formed on the left and right sides of the catcher 3, and the guide portions 107 are respectively formed on the left and right side plates 104 and 104 of the base 1.

  The guide unit 107 includes a main lane 107a along the moving direction of the slider 2, and a branch lane 107c extending in a direction crossing the main lane 107a following the front end 107b of the main lane 107a. In the illustrated example, the guide portion 107 is configured as a watermark groove formed in a penetrating state on the side plate 104 of the base 1. The slider 2 provided with the catcher 3 so as to be rotatable is moved back and forth within a moving range of the slider 322 of the catcher 3, that is, a range corresponding to the length of the main lane 107 a. In the illustrated example, the branch lane 107c extends downward in a direction substantially orthogonal to the main lane 107a. The corner inner corner 107e formed by the branch lane 107c and the main lane 107a is formed in an edge shape, the corner outer corner 107d is formed in a taper shape or a round shape, and the slider 2 in the retracted position moves forward by the opening operation of the movable body M. When moved toward the position, the slider 322 can smoothly enter the branch lane 107c.

When the slider 322 in the main lane 107a reaches the front end 107b of the main lane 107a by the movement of the slider 2 toward the forward position by the attitude control means 4, the slider 322 is energized by the urging of the damper means 5. 322 enters the branch lane 107c and the catcher 3 is positioned at the standby position.
When the front end Sg of the striker body S of the movable body M is abutted against the abutting portion 31 of the catcher 3 in the standby position, the abutting portion 31 moves backward against the urging force of the damper means 5 and the catcher 3 associated therewith The slider 322 in the branch lane 107c enters the main lane 107a by the rotation.

  Thereby, in this embodiment, the state in which the slider 2 is in the forward movement position can be stably maintained, and the movable body M is moved toward the reference stop position to the abutting portion 31 of the catcher 3. The catcher 3 at the standby position can be rotated to the engagement position by the strike of the striker body S, and at the same time, the slider 2 can be smoothly retracted. Further, when the movable body M at the reference stop position is opened, the slider 2 that has been moved from the retracted position to the advanced position is held at the advanced position, and the catcher 3 is rotated from the engaging position to the standby position. The lever can be positioned at the standby position, and the striker body S can be released so that the opening operation of the movable body M is not inhibited.

(Damper means 5)
The damper means 5 is configured to press and urge the abutting portion 31 of the catcher 3 from the rear.

  In this embodiment, the damper means 5 includes a cylinder body 50 and a plunger rod 51 that is constantly biased in a direction protruding from the cylinder body 50. In addition, the plunger rod 51 is configured to apply braking to the pushing against the urging force.

  In the illustrated example, the damper means 5 causes the closed end 501 of the cylinder body 50 to abut against the back surface 331 of the second portion 33 of the catcher 3 through the cylinder body 50 through the through hole 203b of the combination portion 203 of the slider 2, and The slider 2 and the base 1 are combined so that the tip of the plunger rod 51 is brought into contact with the inner surface of the back plate 105 of the base 1. A piston (not shown) is attached to the inner end of the plunger rod 51, and this piston is always attached to the protruding end side of the plunger rod 51 of the cylinder body 50 by a spring (not shown) housed in the cylinder body 50. As a result, the damper means 5 presses and urges the abutting portion 31 of the catcher 3 from the rear. In addition, a viscous fluid such as silicon oil is sealed in the cylinder body 50, and at least when the plunger rod 51 is pushed into the cylinder body 50, braking is applied to the push-in (it is allowed to be pushed in). (Slowly.)

  Thereby, in this embodiment, the striker body S of the movable body M that has been moved toward the reference stop position is retreated by abutting against the abutting part 31 of the catcher 3. In this backward movement, braking can be applied by the plunger rod 51 pushed into the cylinder body 50, so that no impact is generated in the final stage of the movement of the movable body M.

  The urging force of the damper means 5 that presses the slider 2 forward via the catcher 3 acts on the urging force of the retracting means 7 of the first example and the movable body M of the second example from a predetermined opening position. When the catcher 3 is rotated from the standby position to the engaging position, the slider 2 moves to the retracted position by the urging force opposite to the urging force of the damper means 5. Then, the movable body M is positioned at the reference stop position. When the movable body M at the reference stop position is opened, the slider 2 is moved to the forward position while being stored in a spring, which will be described later, constituting the pull-in means 7, and the catcher 3 is moved by the urging force of the damper means 5. The striker body S is released by rotating in a direction in which the slider 322 enters the branch lane 107c.

(Earthquake lock means 6)
The earthquake locking means 6 has a configuration for preventing the slider 2 from moving to the forward position during an earthquake.

  In this embodiment, the earthquake locking means 6 includes a spherical weight 60, a seat portion 61, and a rolling space 62. In this embodiment, the seat portion 61 is provided in the base 1, and the rolling space 62 is formed by a part of the base 1 and a part of the slider 2.

  The spherical weight 60 is configured to fall from the seat portion 61 of the base 1 when a predetermined magnitude of vibration is applied by an earthquake. Typically, the spherical weight 60 drops from the seat portion 61 when a vibration of a magnitude that causes the movable body M at the reference stop position to open and move is applied. As the spherical weight 60, a metal sphere is typically used.

  The rolling space 62 includes an upper surface portion 204 of the slider 2 below the seat portion 61, a forward wall 205 formed on the slider 2 adjacent to the upper surface portion 204, and the base 1 so as to face the forward wall 205. And a rearward wall 108 formed on the rear side. Then, the movement of the slider 2 in the retracted position to the advanced position is prevented by the spherical weight 60 sandwiched between the forward wall 205 and the rear wall 108.

  In this embodiment, the upper surface 204 of the slider 2 constituting the rolling space 62 is undulated to form the lowest return area 204a, and this return area on the forward wall 205 is also provided. A portion at the rear of 204a is a lift wall portion 205a that is inclined so as to gradually approach the rear as it goes upward.

  Further, a return lane 206 of the spherical weight 60 is formed behind the top portion 205b of the lift wall portion 205a in the slider 2, and the spherical weight 60 settled in the return area 204a by the movement of the slider 2 toward the advanced position is lifted. It is lifted by the wall 205a and returned to the seat 61 through the return lane 206.

(Function of latch device R)
When the movable body M is moved toward the reference stop position, for example, by closing the hinged door M ′, the front end Sg of the striker body S is at the abutting portion 31 of the catcher 3 that is at the standby position and positions the slider 2 at the forward movement position. It is hit. When this contact is made, the catcher 3 is rotated to the engagement position, and the engagement claw 30 is engaged with the engagement portion Se of the striker body S. Since the abutting portion 31 is pressed from behind by the damper means 5, no impact is caused by the abutting. When the catcher 3 is rotated to the engaging position, the slider 2 is allowed to move backward. In the first example, the predetermined force is applied to the movable body M side by the urging force of the retracting means 7 and in the second example. The movable body M is moved to the reference stop position and positioned by the urging force applied from the opening position or the like. (FIGS. 3 and 11)

  When the movable body M in the reference stop position is opened, the slider 2 that engages the striker body S with the catcher 3 is moved to the forward position. When the slider 2 is moved to the forward movement position, the catcher 3 is rotated to the standby position by the pressing of the abutting portion 31 by the damper means 5 and the attitude control means 4, whereby the slider 2 is again positioned at the forward movement position, and the striker body S is released from the latch device R, and the opening operation of the movable body M can be continued. (Fig. 1, Fig. 9)

  If an earthquake occurs when the movable body M is at the reference stop position, the movement of the slider 2 to the forward movement position is prevented by the earthquake locking means 6, so that the catcher 3 is not rotated to the standby position. The striker body S remains captured by the latch device R. This prevents the movable body M from opening unexpectedly during an earthquake.

  In particular, in the latch device R according to this embodiment, the damper means 5 is linked to the catcher 3 combined with the slider 2 to prevent the occurrence of an impact at the final stage such as the closing operation of the movable body M. By having the function in the catcher 3, the latch device R can be configured as compactly as possible while having this function.

  Specifically, if an earthquake occurs when the movable body M is at the reference stop position, the movable body M is moved from the reference stop position by the vibration, and accordingly, the slider 2 is also moved toward the forward movement position. However, the slider 2 is not moved to the advanced position by the spherical weight 60 that has fallen into the rolling space 62. (FIGS. 5 and 13)

  When the earthquake stops, the spherical weight 60 moves to the return area 204a by gravity and settles there. When the movable body M is opened at this time, the slider 2 is moved toward the forward movement position, the pitch between the rearward wall 108 of the base 1 and the lift wall portion 205a is narrowed, and the spherical weight that was in the return area 204a. 60 is lifted by the inclination of the lift wall 205a, enters the return lane 206, returns to the seat 61 through the return lane 206. Thereby, the movement to the advance position of the slider 2 is permitted. When the slider 2 reaches the forward movement position, the catcher 3 is positioned at the standby position, and the striker body S is released from the latch device R, so that the movable body M can move to a desired opening position or the like.

(Characteristic configuration of the first example)
The first example has pull-in means 7 that constantly urges the slider 2 toward the retracted position. In this embodiment, the retracting means 7 is constituted by a compression coil spring wound around the outside of the cylinder body 50 constituting the damper means 5.

  In the first example, the combination portion 203 of the slider 2 includes a plate-like front portion 203a and a rear portion 203c that are arranged at intervals in the moving direction of the slider 2. Through holes 203b of the cylinder body 50 are formed in the front portion 203a and the rear portion 203c, respectively. The base 1 includes a through hole 203b of the cylinder body 50 and a stopper body 109 fixed to the base 1 between the front portion 203a and the rear portion 203c. The spring front end of the spring is pressed against the stopper body 109 from the rear, and the spring rear end is pressed against the rear portion 203c of the combination portion 203 of the slider 2 from the front. This spring is most compressed when the slider 2 is in the forward position. When the catcher 3 is rotated to the standby position, the slider 2 is allowed to move backward, and since the biasing force of the spring is larger than the biasing force of the damper means 5, the slider is caused by the elastic extension of the spring. 2 moves to the retreat position, whereby the movable body M is pulled to the reference stop position.

  In the first example, the seat 61 constituting the earthquake locking means 6 is spaced a little larger than the diameter of the spherical weight 60 between the inner surface of the top plate 102 of the base 1 and the slider. The lower end of the spherical weight 60 is placed in the center of the horizontal plate 110 supported by the top plate 102 of the base 1 so that a space smaller than the diameter of the spherical weight 60 is provided between the upper surface portion 204 and the upper surface portion 204. A circular depression 110a is provided.

  A space larger than the diameter of the spherical weight 60 is formed between both sides of the horizontal plate 110 in the front-rear direction and the inner surface of the side plate 104 of the base 1. Further, the front side of the horizontal plate 110 is integrally connected to the lower side of the front partition plate 111 between the inner surfaces of the left and right side plates 104, 104 of the base 1, and the rear side of the horizontal plate 110 is It is integrally connected to the lower side of the rear partition plate 112 having a width substantially equal to the horizontal dimension of the horizontal plate 110. Further, a rib 110b extending between the front partition plate 111 and the rear partition plate 112 is formed on one of both sides along the front-rear direction of the horizontal plate 110, and the spherical weight 60 is formed on the rib 110b at the time of an earthquake. It falls only from the other of both sides along the front-rear direction of the horizontal plate 110 due to the obstruction. That is, in this example, the other side of both sides along the front-rear direction of the horizontal plate body 110 is the drop port 110 c of the spherical weight 60.

Further, in the first example, the upper end of the slider 2 and the rear end side of the slider 2 continues long along the moving direction of the slider 2 and protrudes upward. A pair of left and right trapezoidal ridges 207, 207 provided so as to provide an interval for accommodating the rear partition plate 112;
A rear wall 208 extending between the pair of trapezoidal ridges 207 is formed on the rear end side of the trapezoidal ridges 207.

  When the slider 2 is in the forward position, the horizontal plate 110 having the seat 61 is accommodated between the pair of trapezoidal ridges 207. (FIG. 2) At this time, the pitch between the front end face of the table-like raised portion 207 and the front partition plate 111 is smaller than the diameter of the spherical weight 60, and the pitch between the back wall portion 208 and the rear partition plate 112 is also The diameter is smaller than the diameter of the spherical weight 60.

  In this example, the front end surface and the back wall portion 208 of the trapezoidal ridge portion 207 function as the forward wall 205, respectively, and the plate surfaces directed to the rear of the front partition plate 111 and the rear partition plate 112 are respectively facing backward. It functions as a wall 108.

  When the slider 2 is in the retracted position, the horizontal plate 110 comes out from between the pair of trapezoidal ridges 207, and the rolling space 62 that widens the space between the front partition plate 111 and the back wall 208 is the front-facing side. The wall 205, the rearward wall 108, the upper surface portion 204 of the slider 2, and the inner surfaces of the left and right side plates of the base 1 are formed. (Fig. 4)

  In this example, the upper surface portion 204 of the slider 2 constituting the rolling space 62 is the highest on the side of the drop port 110c, and the front end surface of one of the trapezoidal ridges 207 on the side opposite to the drop port 110c. When the earthquake stops, the spherical weight 60 is moved to the front position of one front end surface of the trapezoidal ridge 207 and settles down. In this example, one front end surface of the table-like raised portion 207 has an inclination as a lift wall portion 205a. The upper surface of one of the trapezoidal ridges 207 is positioned at substantially the same level as the level of the ribs 110b of the horizontal plate 110, and faces the upper part of the rear end of the trapezoidal ridges 207. A step surface 209 is formed. The other upper surface of the table-like raised portion 207 is positioned above the level of the rib 110b of the horizontal plate 110, and one side of the table-like raised portion 207 is moved by the lift wall portion 205a by the movement of the slider 2 toward the advanced position. The spherical weight 60 lifted to the upper surface of the steel enters the horizontal plate 110 at the stepped surface 209. At this time, the drop port 110c is closed by the other of the trapezoidal ridges 207. Stay on top. That is, in this example, one upper surface of the platform-like raised portion 207 functions as the return lane 206.

  When the movable body M is at the reference stop position and therefore the slider 2 is at the retracted position, when an earthquake occurs, the spherical weight 60 is moved from the seat portion 61 through the drop port 10c to the upper surface portion of the slider 2 constituting the rolling space 62. 204 falls on. When the movable body M is moved from the reference stop position due to the vibration of the earthquake, the slider 2 is moved toward the forward movement position. At this time, the spherical weight 60 is located in the rolling space 62 and is connected to each of the forward facing walls 205. The movement of the slider 2 is restricted so that the slider 322 of the catcher 3 does not reach the front end 107b of the main lane 107a in the guide portion 107 by being sandwiched between any of the rear-facing walls. (FIG. 5) An inclined lane 204b that is lowered toward the rear is formed on the side of the drop port 110c, and a raised portion 204c is formed on the side of the rear end of the inclined lane 204b. . A corner 204d of the raised portion 204c facing the inclined lane 204b is tapered in a plan view. This taper makes it difficult for the spherical weight 60 to move to the return area 204a until the earthquake stops. The upper surface portion 204 of the slider 2 between the pair of trapezoidal raised portions 207 and 207 has a slope that increases as the back wall portion 208 is approached. The back wall portion 208 has an inclination toward the rear as it goes to the formation side of the return area 204a in a plan view, enters between the pair of trapezoidal ridges 207 and 207, and hits the back wall portion 208. The spherical weight 60 hits the inner surface of the table-like raised portion 207 on the return area 204a side so that it can easily roll to the rear end side of the inclined lane 204b. This also makes it difficult for the spherical weight 60 to move to the return area 204a until the earthquake stops.

  When the earthquake stops, the slider 2 is positioned at the retreat position, and the spherical weight 60 settles on the return area 204a. When the movable body M is opened from this state, the spherical weight 60 enters the horizontal plate 110 from the opposite side of the drop port 110c by the lift wall 205a and the return lane 206 and is held on the seat 61 again.

(Characteristic configuration of the second example)
In the second example, the seismic locking means 6 is provided at two locations spaced apart in the moving direction of the slider 2,
The drop port 119 of one seat 61 of the two earthquake locking means 6 is directed to one side that intersects the moving direction of the slider 2,
The drop port 119 of the other seat 61 of the two earthquake locking means 6 is directed to the other side crossing the slider 2 in the moving direction.

  In this example, an insertion portion 114 a that is inserted into the base 1 from an opening portion 113 formed at the top of the base 1, and a plate portion 114 b that closes the opening portion 113 and becomes the top plate 102 of the base 1. The rolling space formation body 114 provided with is provided.

  In the insertion portion 114a of the rolling space forming body 114, the front chamber forming portion 115 is provided on one side of the insertion portion 114a with the center line x extending in the front-rear direction on the other side of the center line x. A rear chamber forming section 117 is provided behind the front chamber forming section 115.

  The front chamber forming portion 115 includes a front wall 115b extending from the center line x toward one side so as to form a right angle between the center wall 115a along the center line x and the front end of the center wall 115a. The rear wall 115c continues from the center line x toward one side so as to form a right angle with the rear end of the center wall. Further, a front side chamber 116 communicating with the front chamber forming portion 115 at the position of the center line x is formed in the insertion portion 114a on the front side of the front chamber forming portion 115. This communication location becomes the drop port 119. The front side chamber 116 includes a front wall 116a, a rear wall 116b, a back wall 116c, and a bottom plate 116d, and a circular recess 116e in which the lower end of the spherical weight 60 is accommodated is formed on the upper surface of the bottom plate 116d. That is, in this example, the bottom plate 116 d of the front side chamber 116 functions as the seat portion 61 of the spherical weight 60. The front wall 116a and the rear wall 116b of the front side chamber 116 are inclined so as to narrow the front-rear direction dimension of the front side chamber 116 toward the back wall 116c side. The front wall 116a of the front side chamber 116 is continuous with the front wall 115b of the front chamber forming portion 115 at the position of the center line x. The front wall 115b of the front chamber forming portion 115 has an inclination gradually toward the rear in a plan view as the distance from the center line x position increases. The front chamber 120 is formed on the front side of the base 1 by the side plate 104 of the base 1 on the side of the front chamber forming portion 115.

  On the other hand, the rear chamber forming portion 117 has a front wall extending from the center line x toward one side so as to form a right angle between the center wall 117a along the center line x and the front end of the center wall 117a. 117b. The rear of the rear chamber forming portion 117 is open. Further, a rear side chamber 118 communicating with the rear chamber forming portion 117 at the position of the center line x is formed in the insertion portion 114a on the front side of the rear chamber forming portion 117. This communication location becomes the drop port 119. The rear side chamber 118 includes a front wall 118a, a rear wall 118b, a back wall 118c, and a bottom plate 118d, and a circular recess 118e in which the lower end of the spherical weight 60 is accommodated is formed on the upper surface of the bottom plate 118d. . That is, in this example, the bottom plate 118 d of the rear side chamber 118 also functions as the seat portion 61 of the spherical weight 60. The front wall 118a and the rear wall 118b of the rear side chamber 118 are inclined so as to narrow the longitudinal dimension of the rear side chamber 118 as it approaches the back wall 118c side. The front wall 118a of the rear side chamber 118 is continuous with the front wall 117b of the rear chamber forming portion 117 at the position of the center line x. The front wall 117b of the rear chamber forming portion 117 has an inclination gradually toward the rear in a plan view as the distance from the center line x position increases. A rear chamber 121 is formed on the rear side of the base 1 by the side plate 104 of the base 1 on the side of the rear chamber forming portion 117 and the back plate 105 of the base 1.

  Further, in this second example, a front base-like raised portion 210 is provided at the upper part of the slider 2 and at a substantially middle position in the front-rear direction, and a rear base-like raised portion 211 is provided at the rear end side. ing.

  The front side ridge portion 210 has a horizontal dimension that is substantially equal to the horizontal direction dimension of the front chamber 120, and the rear side ridge portion 211 has a horizontal dimension that is the same as that of the rear chamber 121. It is substantially equal to the dimension in the left-right direction.

  Further, the front trapezoidal ridge 210 is formed on one side of the slider 2 with the center line x extending in the front-rear direction, and the rear trapezoid ridge 211 is on the other side of the centerline x. Is formed.

  Each of the trapezoidal ridges 210 and 211 has a surface continuing in the direction crossing the center line x on the front side thereof, and this surface functions as the forward facing wall 205. A surface between the position of the approximately middle in the left-right direction of the forward wall 205 and the side surfaces of the trapezoidal ridges 210 and 211 on the side opposite to the center line x side is provided with an inclination that becomes the lift wall 205a. . In addition, any of the trapezoidal ridges 210 and 211 includes a regulation protrusion 212 that protrudes upward over the rear side thereof, and the lift wall 205a moves away from the lift wall 205a as the slider 2 moves toward the advanced position. The spherical weight 60 pushed up on the trapezoidal ridges 210 and 211 comes into contact with the restricting protrusion 212 and is returned to the seat 61 of the front side chamber 116 and the seat 61 of the rear side chamber 118. Yes. That is, in this example, the upper surfaces of the platform-like ridges 210 and 211 function as the return lane 206.

  The front trapezoidal ridge 210 is positioned in the front chamber 120, and the rear trapezoidal ridge 211 is positioned in the rear chamber 121. The spherical weight 60 is accommodated in the front side chamber 116 communicating with the front chamber 120, and the spherical weight 60 is accommodated in the rear side chamber 118 communicating with the rear chamber 121. At the two locations where the door is opened, the earthquake locking means 6 are provided.

  When the slider 2 is in the retracted position, the rear end of the front trapezoidal ridge 210 is close to the rear wall of the front chamber forming portion 115, and the rear end of the rear trapezoidal ridge 211 is close to the back plate 105 of the base 1. Is done. When the slider 2 is in the forward movement position, the front facing wall 205 of the front side trapezoidal raised portion 210 is brought close to the front wall 115b of the front chamber forming portion 115 with a space smaller than the diameter of the spherical weight 60, and the rear side The forward-facing wall 205 of the trapezoidal raised portion 211 is brought close to the front wall 117b of the rear chamber forming portion 117 with an interval smaller than the diameter of the spherical weight 60. That is, in this example, the front wall 115b of the front chamber forming portion 115 and the front wall 117b of the rear chamber forming portion 117 each function as the rearward wall 108. The seat portion 61 is positioned higher than the upper surface portion 204 of the slider 2, but is positioned lower than the upper surfaces of the table-like raised portions 210 and 211, and when the slider 2 is in the advanced position, the table-like raised portion. 210 and 211 are located on the side of the drop opening 119 to prevent the spherical weight 60 from falling.

  When the slider 2 is in the retracted position, the upper position 204 of the slider 2, which is the bottom of the front chamber 120 and the rear chamber 121, respectively, has the front position of the lift wall portion 205a of the trapezoidal raised portions 210 and 211 as the return area 204a. The ups and downs are given. In front of the return area 204a, there is a guide wall 213 that has an inclination gradually toward the front as it approaches the center line x in a plan view, and vibrates due to aftershocks even when the spherical weight 60 settles down in the return area 204a. The spherical weight 60 rolls out of the return area 204a promptly when acted on. Further, the forward wall 205 located closer to the center line x than the lift wall 205a has an inclination gradually toward the rear as approaching the center line x in a plan view, and has a spherical weight as long as vibration is applied. 60 keeps rolling as much as possible between the forward wall 205 and the rearward wall 108 inclined as described above.

  In this example, the seismic locking means 6 are provided at two locations spaced apart in the moving direction of the slider 2, and the drop port 119 of the spherical weight 60 constituting the seismic locking means 6 is provided at two seismic locks. Since one of the means 6 is opposite to the other, the spherical weight 60 is formed on the seat 61 through the lift wall 205a and the return lane 206 in one of the earthquake locking means 6 depending on the direction of vibration. Even if there is a return, such a return does not occur in the other locking means 6 at the time of the earthquake, so long as a vibration that causes the movable body M to open or the like is applied, regardless of the direction of the vibration. The slider 2 is not moved to the forward position.

Main part longitudinal cross-section block diagram of latch apparatus R (1st example) Cross section diagram of the main part Vertical section configuration diagram Cross section diagram of the main part Cross section diagram of the main part Plan view of striker body S AA line sectional view in FIG. Separation perspective view of latch device R (first example) Main part longitudinal cross-section block diagram of latch apparatus R (2nd example) Cross section diagram of the main part Vertical section configuration diagram Cross section diagram of the main part Cross section diagram of the main part Cross section diagram of the main part Perspective configuration diagram Plan view of striker body S BB sectional view in FIG. Separation perspective configuration diagram of latch device R (second example)

Explanation of symbols

M movable body M 'swing door H main body S striker body Se hooked part R latch device 1 base 101 mounting part 2 slider 3 catcher 30 hooking claw 31 hitting part 4 attitude control means 5 damper means 6 earthquake locking means

Claims (6)

A latch device that catches and captures a striker body provided on the movable body side at a reference stop position provided on the main body side before the movement,
A base with an attachment to the body;
A slider combined with the base so as to be movable back and forth in the direction along the moving direction of the movable body,
A catcher that is combined with the slider so as to be rotatable, and has a hooking claw to the hooked portion of the striker body, and a butting portion to the front end of the striker body,
The catcher is positioned at a standby position where the catching claw is not engaged with the striker body at the slider forward position, and the slider is allowed to move backward by the catcher turning at the front end of the striker body at the abutting portion at the standby position. And position control means for positioning the catcher at the engagement position for engaging the engagement claw with the water striker body,
Damper means for pressing and abutting the end of the catcher from the rear;
Retraction means for always urging the slider toward the retracted position;
And an earthquake locking means for preventing the slider from moving to the forward position in the event of an earthquake ,
This earthquake lock means
A spherical weight that falls from the seat of the base when a vibration of a predetermined magnitude is applied;
A spherical weight comprising at least an upper surface portion of a slider under the seat, a forward wall formed on the slider adjacent to the upper surface portion, and a rear wall formed on the base so as to face the forward wall. Consisting of rolling space,
A latch device characterized in that movement of the slider in the retracted position to the advanced position is prevented by a spherical weight sandwiched between the forward wall and the rear wall . A striker body provided on the side of the movable body configured to be biased toward a reference stop position before the movement from at least a predetermined movable position is provided on the main body side, and the movable body is moved to the reference stop position. A latch device for catching and catching at
A base with an attachment to the body;
A slider combined with the base so as to be movable back and forth in the direction along the moving direction of the movable body,
A catcher that is combined with the slider so as to be rotatable, and has a hooking claw to the hooked portion of the striker body, and a butting portion to the front end of the striker body,
The catcher is positioned at a standby position where the catching claw is not engaged with the striker body at the slider forward position, and the slider is allowed to move backward by the catcher turning at the front end of the striker body at the abutting portion at the standby position. And position control means for positioning the catcher at the engagement position for engaging the engagement claw with the water striker body,
Damper means for pressing and abutting the end of the catcher from the rear;
And an earthquake locking means for preventing the slider from moving to the forward position in the event of an earthquake ,
This earthquake lock means
A spherical weight that falls from the seat of the base when a vibration of a predetermined magnitude is applied;
A spherical weight comprising at least an upper surface portion of a slider under the seat, a forward wall formed on the slider adjacent to the upper surface portion, and a rear wall formed on the base so as to face the forward wall. Consisting of rolling space,
A latch device characterized in that movement of the slider in the retracted position to the advanced position is prevented by a spherical weight sandwiched between the forward wall and the rear wall . The top surface of the slider is undulated to form the lowest return area,
The portion of the forward wall behind this return area is a lift wall that is inclined to gradually approach the rear as it goes upwards.
A spherical weight return lane is formed behind the top of the lift wall in the slider.
3. The spherical weight settled in the return area by the movement of the slider toward the forward position is lifted by the lift wall and returned to the seat through the return lane. A latch device according to claim 1. There are earthquake locking means at two places spaced apart in the slider movement direction,
The drop port from one seat of the locking means at the time of two earthquakes is directed to one side crossing the moving direction of the slider,
The drop port from the other seat portion of the two earthquake locking means is directed to the other side intersecting in the moving direction of the slider. The latch device as described. Attitude control means
A slider provided behind the center of rotation of the catcher;
It has a guide part of this slider provided on the base,
The guide part includes a main lane along the moving direction of the slider and a branch lane extending in a direction crossing the main lane following the front end of the main lane.
When the slider in the main lane reaches the front end of the main lane due to the movement of the slider toward the forward position, the slider enters the branch lane by the biasing means, and the catcher is positioned in the standby position.
When the front end of the striker body of the movable body was abutted against the abutting part of the catcher in the standby position, the abutting part was retreated against the urging force of the damper means, and the catcher was rotated to be in the branch lane. The latch device according to any one of claims 1 to 4, wherein the slider enters the main lane.   The damper means is provided with a cylinder body and a plunger rod that is always urged in a direction protruding from the cylinder body, and applies braking to the pushing against the urge of the plunger rod. The latch device according to any one of claims 1 to 5, wherein:

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